JP5258367B2 - Excavation soil removal apparatus and method - Google Patents

Description

  The present invention relates to an excavating and discharging apparatus and method for excavating earth and sand, holding the excavated earth and sand, and easily discharging the held earth and sand.

  22 and 23 disclose a conventional excavation technique. Here, first, the excavator 210 in which the earth and sand receiving sheet 238 and the earth and sand cutting wire 220 are arranged on the cylindrical main body 212 is inserted and arranged in an unillustrated excavation groove. Thereafter, as shown in FIG. 22, the rising portions 220 a and 220 b of the earth and sand cutting wire 220 are pulled, and the loop portion 220 c of the earth and sand cutting wire 220 is drawn out from the wire arrangement groove 222 of the cylindrical body 212 to reduce the diameter. The earth and sand in the main body 212 is cut. Next, the rising operation portions 244b and 244c of the drawing wire 244 are pulled, and the earth and sand receiving sheet 238 is disposed on the earth and sand cutting portion cut by the earth and sand cutting wire 220 on the arc portion 244a of the drawing wire 244. In FIG. 23, when the cylindrical main body 212 is inserted into a not-shown excavation groove, the support claw 294 rotates in the direction of the arrow 208, and when the cylindrical main body 212 is pulled up, the support claw 294 protrudes from the tip portion. It is engaged, rotated by the earth and sand in the direction of arrow 204, inserted into the earth and sand, locked to the stopper portion 202, and brought into a substantially horizontal state. When the cylindrical main body 212 is further pulled up, the earth and sand in the cylindrical main body 212 is supported by the support claws 294, separated from the earth and sand below the support claws 294, and the earth and sand in the cylindrical main body 212 is excavated. (Patent Document 1).

Further, as another conventional excavation technique, as shown in FIG. 24, a high pressure fluid is ejected from an ejection nozzle 338 of a propulsion plate 318 and is rotated by a rotation drive unit 346 while the handle 348 is moved. Move down. Since the injection nozzle 338 rotates along the outer periphery of the excavation area, the injection nozzle 338 starts excavating the outer periphery of the excavation area. After the excavation range is deeply excavated to a predetermined depth, the injection nozzle of the propulsion plate 318 is taken into the cylindrical body 312. Therefore, the injection pipe 332 (injection nozzle 338) is removed from the propulsion plate 318, and can be folded inside the cylindrical body 312 by the propulsion plate 318 hinge mechanism. The U-shaped pipe 317 is wound around both ends of the wire 344 evenly. The traction force is applied and the wire 344 is wound up so that the propulsion plate 318 is folded. Since the cylindrical body 312 and the propulsion plate 318 are rotated along the outer periphery of the excavation range simultaneously with the convolution work of the propulsion plate 318, the earth and sand inside and outside the cylindrical body 312 are divided by the convolution of the propulsion plate 318. (Patent Document 2).
Japanese Patent Laid-Open No. 10-82071 (disastrous 0023, 0024, 0033, FIG. 1, FIG. 9) JP-A-11-217819 (paragraphs 0032, 0033, 0036, 0037, FIG. 2)

  In the technique disclosed in FIG. 22, the lower end portion of the earth and sand receiving sheet 238 is fixed to an intermediate portion of a drawing wire 244 for pulling out the earth and sand receiving sheet 238 from below the sheet storage portion 228. Further, in order to receive the earth and sand firmly, the upper edge of the earth and sand receiving sheet 238 is connected to the holding wires 240 and 242. As described above, the earth and sand receiving sheet 238 that cuts the earth and sand with the earth and sand cutting wire 220 and receives the earth and sand is connected to the drawing wire 244 and the holding wires 240 and 242. It is difficult for the wire (drawer wire 244, holding wire 240, 242 etc.) to be caught and discharged smoothly.

  Further, in order to store the earth and sand receiving sheet 238 in the concave portion (sheet storage portion 228) formed on the inner peripheral surface side of the cylindrical main body 212, the cylindrical main body 212 is temporarily laid on the ground surface and the shielding plate 234 is opened. The earth-and-sand receiving sheet 238 that has been used afterwards is stored, which is troublesome and takes a long time because work efficiency is not good.

  Furthermore, the support claw 294 of the technique disclosed in FIG. 23 can hold the earth and sand in the cylindrical main body 212 only with highly sticky earth and sand such as a loam layer. It is difficult to hold the earth and sand. Further, in order to discharge the earth and sand in the cylindrical main body 212 provided with the support claws 294 disclosed in FIG. 23, the hook on the lower portion of the cylindrical main body 212 is suspended to turn the cylindrical main body 212 upside down. Since the support claws 294 are accommodated in the notches 296 by the movement of the earth and sand and the earth and sand are dropped, the earth and sand cannot be discharged (soil removal) unless the cylindrical main body 212 is turned upside down.

  In the technique disclosed in FIG. 24, since the cylindrical body 312 is rotated while the propulsion plate 318 is bent to divide the sand inside and outside the cylindrical body 312, a large force is applied to the propulsion plate 318. A high strength structure is required to connect to 312. Further, the propulsion plate 318 is bent using a wire 344 through a U-shaped pipe, and a strong pulling force is required to bend the propulsion plate 318. When the wire 344 is used many times, The wire 344 is twisted and is difficult to wind. Further, since the wire 344 is passed through the wire insertion pipe 316 (U-shaped pipe 317), it takes time and trouble to replace the twisted wire 344. Further, in order to bend the propulsion plate 318, the hinge structure is complicated. Therefore, the number of parts is increased, which is not advantageous from the viewpoint of manufacturing management, and the processing cost increases as the number of parts increases.

  The present invention has been made in view of the above circumstances, and includes an excavation and soil removal device and method for improving work efficiency by holding excavated earth and sand and easily discharging (discharging) the retained earth and sand. The purpose is to provide.

In order to achieve the above object, the invention according to claim 1 is directed to an inner pipe having a cylindrical shape and an axial direction of the inner pipe in order to excavate earth and sand on the tip end side of the inner pipe. The fluid is ejected from the excavation jet pipe attached to the peripheral surface of the inner pipe, and the fluid is jetted from the excavation jet pipe attached to the peripheral surface of the inner pipe. A cutting injection pipe attached to the peripheral surface of the inner pipe, wherein a fluid is jetted to cut the earth and sand contained in the inner pipe from the earth and sand outside the inner pipe by excavating the earth and sand; comprises, on the inner peripheral surface of the distal end portion side of the inner tube includes a first groove along the inner peripheral surface, the Hamagogu受provided with a second groove in a direction intersecting with said first groove Protrusion that fits the first groove portion and the second groove portion provided in the fitting receiver on the inner peripheral surface of the inner tube on the tip end portion side The cylindrical body having a fitting member which is a body on the outer peripheral surface, characterized in that housed in the front end portion of the inner tube.

  Therefore, according to the first aspect of the present invention, the fluid is ejected along the axial direction of the inner pipe from the excavating injection pipe attached to the peripheral surface of the inner pipe, and the earth and sand are excavated on the distal end side of the inner pipe, By excavating the earth and sand, it becomes possible to accommodate the earth and sand in the inner pipe, fluid is ejected from the cutting injection pipe attached to the peripheral surface of the inner pipe, and the earth and sand inside the inner pipe and the earth and sand outside the inner pipe Since the fitting receiver is provided on the inner peripheral surface of the inner tube on the tip end side, it is possible to attach the earth and sand holding device or the cartridge type core cutter. While holding the earth and sand in the inner pipe, move it down with a crane or the like, place the tip of the inner pipe on the loading platform such as a truck, and then rotate the earth and sand holding device to separate it from the inner pipe. By lifting, the earth and sand in the inner pipe can be discharged without being caught by the inner peripheral surface (inner wall) of the inner pipe, so that the earth can be easily discharged and the earth and sand can be prevented from being scattered.

Moreover, in addition to the structure of Claim 1, the invention of Claim 2 has the said inner peripheral surface of the said cylindrical body along the axial direction of the said cylindrical body in the said cylindrical body which is a sediment holding device. An elastic cylindrical mesh attached to the mesh, and attached to the mesh, sandwiched between the inner peripheral surface of the cylinder and the mesh, and toward the central axis of the cylinder. In order to attach the inflatable body that can be inflated and the cylindrical net-like body to the inner peripheral surface of the cylindrical body, the inner circumference of the cylindrical body is provided at the edge of the both ends of the cylindrical body. And a support tool provided to face the surface , wherein the cylindrical body is incorporated on the distal end side of the inner tube.

  Therefore, according to the invention described in claim 2, by making the earth and sand holding device a cartridge type, the earth and sand can be easily loaded without being scattered, and the earth and sand holding device can be loaded onto the cylindrical body. The replacement can be easily performed, and a series of operations such as excavation, earth removal and loading can be repeated continuously, so that workability can be dramatically improved.

Furthermore, the invention according to claim 3 is an inner pipe having a cylindrical shape and ejects fluid along the axial direction of the inner pipe in order to excavate the earth and sand on the tip side of the inner pipe. Excavating, the excavation pipe attached to the peripheral surface of the inner pipe, the excavation pipe attached to the peripheral surface of the inner pipe from the fluid jet to excavate the earth and sand, A cutting injection pipe attached to the peripheral surface of the inner pipe, and a cutting injection pipe for injecting a fluid to cut the earth and sand contained in the inner pipe from the earth and sand outside the inner pipe. The cutting nozzle for injecting the fluid in the direction of the central axis of the inner tube on the tip end side of the inner tube, and the inner peripheral surface on the tip end side of the inner tube are attached to the inner peripheral surface. A first groove portion along the fitting portion, a fitting receiver provided with a second groove portion in a direction intersecting the first groove portion, and a tip of the inner tube The inner peripheral surface of the inner tube is housed on the distal end side of the inner tube, and the first and second groove portions provided on the fitting receiver are provided on the outer peripheral surface. A cylindrical body, and in the cylindrical body, provided along the inner peripheral surface of the cylindrical body provided at the edge of the cylindrical body on the opposite side of the tip portion of the inner tube , A support tool, which is a projecting member extending in the axial direction of the cylindrical body, provided to face the inner peripheral surface of the cylindrical body , holds one end of the elastic cylindrical mesh body, With the support provided on the edge of the inner tube on the distal end side of the cylindrical body, the other end of the mesh that is cut along the axial direction of the mesh is removed. An inflatable body that is supported and sandwiched between the inner peripheral surface of the cylindrical body and the mesh body is attached to the outer peripheral surface of the inner tube. By fluid from the injection pipe is expanded is injected, the expander body toward the center axis of the cylindrical body, the other end of the mesh body is away from the support, to hold the soil of the cylindrical body It is characterized by that.

  Therefore, according to the invention described in claim 3, the fluid is ejected from the excavation injection pipe attached to the peripheral surface of the inner pipe to excavate the earth and sand, and the earth and sand are accommodated in the inner pipe. With the fluid sprayed from the cutting nozzle, the soil inside the inner tube and the soil outside the inner tube are cut, and the expansion body is inflated and arranged in the gap created by the cutting. It becomes possible. In addition, by using a combination of an expanded body and a net-like body, it can also be used for soils other than sticky soil such as loam layers (eg, sand layers, gravel-mixed soil, backfill soil, landfill soil). It becomes possible to hold it so as not to fall.

According to a fourth aspect of the present invention, there is provided an inner pipe having a cylindrical shape, and an earth and sand ejecting a fluid along the axial direction of the inner pipe in order to excavate the earth and sand on the tip end side of the inner pipe. Excavating, the excavation pipe attached to the peripheral surface of the inner pipe, the excavation pipe attached to the peripheral surface of the inner pipe from the fluid jet to excavate the earth and sand, A cutting injection pipe attached to the peripheral surface of the inner pipe, for injecting fluid to cut the earth and sand accommodated in the inner pipe from the earth and sand outside the inner pipe, and a tip portion of the inner pipe A first groove portion along the inner peripheral surface, a fitting receiver provided with a second groove portion in a direction intersecting the first groove portion, and an inner periphery on the distal end side of the inner tube Protruding bodies fitted on the first groove portion and the second groove portion provided on the fitting receiver on the outer peripheral surface of the inner tube, Comprising a cylindrical body which is accommodated in an end portion side, and in the cylindrical body of said cylindrical body, provided on the edge of the front end portion of the inner tube, along the inner circumferential surface of the cylindrical body The support is a projecting member provided opposite to the inner peripheral surface of the cylindrical body and extending in the axial direction of the cylindrical body, and one end of the elastic cylindrical mesh body is The support is provided at the edge of the cylindrical body opposite to the tip of the inner tube, and the mesh is cut along the axial direction of the mesh. An expansion body that supports the other end in a detachable manner and is sandwiched between the inner peripheral surface of the cylindrical body and the mesh body, and the edge of the cylindrical body on the distal end side of the inner tube A cutting injection nozzle attached to the cutting injection pipe injects the fluid in the direction of the central axis of the inner pipe, and The body is inflated by injecting fluid from an injection tube attached to the peripheral surface of the inner tube, so that the expansion body faces the central axis of the cylindrical body, and the other end of the mesh body is It overlaps away from a support tool and hold | maintains the earth and sand in the said cylindrical body.

  Therefore, according to the invention described in claim 4, fluid is ejected from the excavation injection pipe attached to the peripheral surface of the inner pipe to excavate the earth and sand, and the sediment is accommodated in the inner pipe. With the fluid sprayed from the cutting nozzle, the soil inside the inner tube and the soil outside the inner tube are cut, and the expansion body is inflated and arranged in the gap created by the cutting. It becomes possible. In particular, since the lower portion of the mesh body is held, the other end portion of the mesh body expanded by the expandable body, which is provided with a cut along the axial direction of the mesh body, becomes entangled or overlapped. It becomes possible to prevent earth and sand from spilling from the mesh.

Furthermore, the invention according to claim 5 is the configuration according to claim 1, in addition to the first groove portion provided in the fitting receiver and the first groove on the inner peripheral surface of the inner tube on the tip end side. Provided on the outer peripheral surface a fitting that is a projecting body that fits into the two groove portions, a cylindrical body housed on the distal end side of the inner tube, attached to the inner peripheral surface of the cylindrical body, An earth and sand holding device including an expansion body capable of expanding toward the central axis direction of the cylindrical body is incorporated in the distal end portion side of the inner tube.

  Therefore, according to the invention described in claim 5, by expanding the expansion body, the expansion body expands in the direction of the central axis of the earth and sand holding device, and even if the expansion body expands by the amount not using the net-like body, The space around the central axis of the holding device is larger than the space when using a net-like body, but if the retained earth and sand is highly sticky earth such as a loam layer, the earth and sand are less likely to fall apart. Even if it is held only by the expanding body, it is possible to make it difficult for soil to spill from the space.

  Furthermore, in the invention described in claim 6, in addition to the configuration described in any one of claims 2 to 4, the expansion body is provided in series along the inner circumferential surface in the transverse direction of the cylindrical body. And a plurality of narrowed portions that are difficult to expand due to the injection of fluid into the expansion body.

  Therefore, according to the invention described in claim 6, the expansion body is provided in series in a tube shape facing the inner peripheral surface in the transverse direction of the cylindrical body (sediment holding device), and fluid is injected into the expansion body. Then, the portion of the expansion body between the narrowed portions (binding portions) that are difficult to expand is inflated, projecting toward the central axis direction of the cylindrical body (sediment holding device), and the transverse direction of the cylindrical body (sediment holding device) It is possible to reduce the gap (reducing the space) (the inside of the earth and sand holding device can be closed as much as possible).

According to a seventh aspect of the present invention, in addition to the structure according to any one of the second to fourth aspects, the expander has an inner periphery of the cylindrical body along an inner peripheral surface in a transverse direction of the cylindrical body. It is provided separately from the surface and has a shape extending along the axial direction of the cylindrical body.

  Therefore, according to the seventh aspect of the present invention, the expansion body is provided separately along the inner peripheral surface in the transverse direction of the cylindrical body (sediment holding device) (a plurality of tubes along the inner peripheral surface). The body is provided), and has a vertically long shape that extends along the axial direction of the cylindrical body (sediment holding device). Therefore, by injecting fluid into the expansion body and expanding the expansion body, the expansion body Overhangs toward the central axis of the cylinder (sediment holding device), making it possible to reduce the space in the transverse direction of the cylinder (sediment holding device). Can be blocked as much as possible).

  According to an eighth aspect of the invention, in addition to the configuration of the third or fourth aspect, the expansion is performed in order to inject a fluid from the injection pipe attached to the peripheral surface of the inner pipe into the expansion body. The body includes an injection pipe detachably attached to the injection pipe.

  Therefore, according to the invention described in claim 8, it is possible to inflate the expansion body by injecting a fluid into the expansion body from the injection pipe attached to the outer peripheral surface of the inner pipe. Although it is possible to inject the fluid directly into the expansion body from the injection pipe, the expansion body is provided with a backflow prevention valve in consideration of separation from the earth and sand holding device and the inner pipe, and can be separated from the injection pipe. It is possible to inject the fluid sent from the injection pipe into the expansion body by providing an injection pipe that can be connected with the expansion pipe.

Furthermore, in the invention according to claim 9, in addition to the structure according to any one of claims 1 to 5, a plurality of excavation injection pipes are attached to the peripheral surface of the inner pipe, and the earth and sand A drilling nozzle is attached to each of the plurality of drilling injection pipes on the tip side of the inner pipe, and a circle that protrudes outwardly of the inner pipe is provided between the drilling injection nozzles. A contact member that is formed in an arc shape and prevents damage to an embedded object is provided.

  Therefore, according to the ninth aspect of the present invention, the contact member is provided at the tip of the inner tube, and while rotating the inner tube, the inner tube is pushed with a load that does not damage an embedded object such as a PVC tube, or the inner tube Since only the weight of the outer pipe (including the weight of the outer pipe if there is an outer pipe that accommodates the inner pipe) is put into the soil, it is possible to prevent damage to the buried object.

In addition to the configuration described in claim 1, the invention described in claim 10 is continuous with the cylindrical portion that is the cylindrical body, is formed concentrically with the cylindrical portion, and is rotatable about a central axis. A cartridge type core cutter provided with a cutter portion is incorporated on the tip end side of the inner tube.

  Therefore, according to the invention described in claim 10, the cartridge-type core cutter is attached to the distal end portion of the inner pipe, and the pavement cutting can be performed by the apparatus for operating the excavation and earthing device. By attaching the earth and sand holding device to the part, attaching the excavation and earthing device to the device for operating the same excavation and earthing device, performing excavation, earthing and loading of earth and sand, pavement cutting, excavation, A series of operations such as soil removal and sediment loading is possible, and the entire device can be downsized, eliminating the need for a separate pavement cutting device, greatly increasing the total equipment cost and work cost. It becomes possible to reduce.

  Furthermore, in addition to the structure in any one of Claims 1 thru | or 8, the invention of Claim 11 is provided with the some hole part near the front-end | tip part side of the said inner tube, It is characterized by the above-mentioned. .

  Therefore, according to the eleventh aspect of the present invention, when fluid accumulates in the earth and sand holding device inserted from the tip of the inner pipe, when the inner pipe is lifted to the ground, Since the fluid accumulated in the inner pipe can be discharged from a large number of holes in the inner pipe and allowed to flow into the excavated hole, it is possible to minimize contamination of the work place by the fluid accumulated in the inner pipe due to drainage.

  According to a twelfth aspect of the present invention, in addition to the configuration according to the first to ninth aspects, the inner tube is equal in length to the axial direction of the inner tube or shorter than the axial length of the inner tube. It is housed in an outer tube.

  Therefore, according to the twelfth aspect of the present invention, the inner pipe is accommodated in the outer pipe to form a double pipe structure, which can be used for preventing the collapse of the hole wall near the ground surface.

Furthermore, in the invention described in claim 13, the earth and sand holding device according to claim 2 is housed in the distal end side of the inner pipe of the excavation and earthing device according to claim 1, and the The fitting receiver and the fitting of the earth and sand holding device are fitted, and the excavation and earthing device is rotated, the fluid is sent to the excavation injection pipe, and the fed to the excavation injection pipe A step of injecting a fluid from an excavation spray nozzle attached to the excavation injection pipe; and the excavation soil removal device is brought into contact with the excavated earth and sand, and the fluid is injected from the excavation injection nozzle to excavate the earth and sand And after the excavation and earthing device finishes excavating the earth and sand, the injection of the fluid from the excavation injection nozzle is stopped, the fluid is sent to the cutting injection pipe, and the injection is performed from the cutting injection nozzle. By the fluid, the earth and sand holding device is transverse to the axial direction. And cutting the earth and sand in the sand holding device in the direction of the feed fluid into the injection tube attached to the outer peripheral surface of the inner tube, the sent into the injection pipe wherein the fluid is separable from said injection tube A step of inflating the expansion body sent from the injection pipe connected to the expansion body, and holding the earth and sand cut by the fluid injection from the cutting injection nozzle by the expansion body and the net-like body; and While holding the earth and sand, the excavation and earthing device is pulled up to the ground side, and the fitting receiver and the fitting that connect the excavation and earthing device and the earth and sand holding device are rotated and removed. And separating the pouring pipe and the pouring pipe to make the excavating and discharging device and the earth and sand holding device separable, and discharging the earth and sand of the excavating and discharging device together with the earth and sand holding device. And comprising To.

  Therefore, according to the invention described in claim 13, since the earth and sand holding device is cartridge-type and detachable, the inner pipe is turned upside down when the earth is stored, held and discharged. Therefore, it is possible to perform a series of operations of excavating earth and sand, holding the excavated earth and sand, and discharging the retained earth and sand, and improving work efficiency. .

According to a fourteenth aspect of the present invention, the inner pipe of the excavation and earthing device according to the second aspect is rotated, and the fluid is ejected from an excavation injection nozzle attached to the excavation injection pipe. After burying the upper end of the inner pipe to a predetermined depth by excavating the connecting pipe, a connecting tool is attached to the upper end of the inner pipe, and the connecting tool and the lower flange of the upper column are overlapped and connected. It is characterized by.

  Therefore, according to the invention described in claim 14, by connecting the connecting tool attached to the upper end of the inner tube and the lower flange of the marker column / illuminating lamp column, without discharging the earth and sand in the inner tube, It can be used as a steel pipe foundation for signs and lighting.

The present invention as described in claim 15, is rotated by fixing the inner tube and the outer tube the inner tube of the drilling earth removing device are accommodated in the outer tube according to claim 2, for the excavation The upper end portion of the outer pipe is buried to a predetermined depth by jetting the fluid from a jet nozzle for excavation attached to the jet pipe to excavate earth and sand, and separating the inner pipe and the outer pipe to After only the inner pipe is rotated and the fluid is ejected from the excavation spray nozzle to excavate the earth and sand, the upper end of the outer pipe is buried to a predetermined depth, and then connected to the upper end of the outer pipe. And the connection tool and the lower flange of the upper column are overlapped and connected.

  Therefore, according to the invention described in claim 15, since the upper end of the outer pipe is buried to a predetermined depth and excavated with only the inner pipe (pushing into the ground), a long foundation is formed. By connecting the overlapping portion of the inner tube and the outer tube with strength, for example, when the inner tube and the outer tube are excavated in a double-pipe structure and the upper end of the outer tube reaches a predetermined depth, the inner tube And the outer pipe are separated, another inner pipe is connected to the upper end of the inner pipe, excavation is performed with the two inner pipes, and the upper end of the other inner pipe is buried to a predetermined depth. By fixing the outer tube and the outer tube with a fixing tool such as a bolt, it is possible to increase the strength of the overlap between the inner tube and the outer tube and form a long foundation.

  According to the present invention, the earth holding device and the inner pipe of the excavation and earthing device are connected to each other by the fixture and the fixture holder, and the injection pipe is connected to the injection pipe in a separable state, and the excavation and earthing device Since the earth and sand holding device can be attached to and detached from the inner pipe, the earth and sand holding device can be separated from the excavating and discharging device without turning the inner pipe of the excavating and discharging device upside down. The soil work efficiency can be improved. In addition, by making the earth and sand holding device into a cartridge type, when the earth and sand are discharged (discharged) from the excavating and discharging device, the earth and sand holding device is discharged (exhausted). ) The earth and sand holding device is attached to the inner pipe of the excavating and discharging device, so that the next excavation can be performed immediately. As described above, by preparing a plurality of replacement sediment holding devices, a series of excavation and soil removal operations can be performed in a short time even if they are performed a plurality of times.

  In addition, since the earth and sand holding device is also discharged from the inner pipe of the excavation and earthing device, when the earth and sand holding device is separated from the inner pipe, there is no large protrusion on the inner peripheral surface (inner wall) of the inner pipe. The earth and sand can be dropped from the cylindrical body only by the weight of the earth and sand, and the earth and sand can be discharged (drained) smoothly, and the earth and the truck can be easily loaded without being scattered.

  Furthermore, since the high-pressure fluid is supplied from a device for supplying high-pressure fluid used for excavation and the earth and sand are cut by the high-pressure fluid from the injection nozzle, devices such as wires and propulsion plates are not required, and the structure is simplified. be able to. When using a mesh body and an expanded body in the earth and sand holding device, work is easy because the expanded body is integrated with the mesh body only by binding with a binding material, and the expanded body and the mesh body are integrated. Thus, it is only inserted into the inside of the cylindrical body of the earth and sand holding device, and the assembling of the earth and sand holding device is easy and workability is improved.

  Furthermore, the structure of the expansion body is a tube shape along the inner peripheral surface (inner wall) in the transverse direction of the cylindrical body of the earth and sand holding device, or has a vertically long shape extending along the axial direction of the earth and sand holding device to hold the earth and sand. By separating the device along the inner peripheral surface (inner wall) in the transverse direction of the apparatus, the manufacturing cost can be reduced, and the work of binding the expansion body to the mesh body can be simplified. And, by devising the bundling method (attachment method) to the inner peripheral surface (inner wall) of the expandable mesh or the cylindrical body of the earth and sand holding device, the structure of the earth and sand holding device is closed as much as possible (The space inside the earth and sand holding device can be reduced).

  Since the volume when the expandable body is inflated is not so large, the fluid injected into the expandable body can be either gas or liquid, and a fluid supply device (not shown) connected to the injection pipe can adjust the flow rate or flow pressure. It is desirable to have

  In addition, since it has a contact member on the tip side of the inner pipe of the excavation and earthing device, when excavating a hole for burying a utility pole or street tree in an urban area, it can be excavated without damaging the buried object such as a PVC pipe . Furthermore, since a series of operations such as pavement cutting, excavation, soil removal, and sediment loading can be performed with a single device, work efficiency can be improved. Further, since the pavement cutting device is also of a cartridge type and can be incorporated into the excavation and soil removal device, it is not necessary to prepare a separate pavement cutting device, so that the total device cost and work cost can be greatly reduced.

  Furthermore, by using the excavation and earthing device in which the outer pipe accommodates the inner pipe, the cylindrical body (outer pipe) can be used for preventing the collapse of the hole wall near the ground surface and can be used as the root of the electric pole. And in the case of double pipe structure, the length of the inner pipe can be reduced to half of the planned excavation depth, so the length of the inner pipe body can be shortened, and the rotary drive unit connected to the upper part of the inner pipe of the excavation and earthing device Therefore, the entire apparatus for operating the excavating and discharging apparatus can be reduced in size. In addition, when excavating by moving within the diameter from the center of the excavated hole, it is possible to excavate vertically, and since excavation of earth and sand is performed with fluid, the excavated hole generated when excavating with an earth auger The excavation position shift caused by being pulled by the gap is less likely to occur.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 and 2 show an inner pipe 1 that is a cylindrical body of an excavation and earthing device 30 according to the present invention. The inner pipe 1 has a function for excavating the ground, and as shown in FIG. 1, an excavation injection pipe 6, a cutting injection pipe 7, and an injection pipe 28 are attached. In this example, as shown in FIGS. 1 and 2, a drilling injection pipe 6, a cutting injection pipe 7, and an injection pipe 28 are attached to the outer peripheral surface (outer wall) 1 a of the inner pipe 1. The attachment of the excavation injection pipe 6, the cutting injection pipe 7 and the injection pipe 28 to the outer peripheral surface (outer wall) 1a of the inner pipe 1 is performed by welding in this example, but is not limited to welding. For example, the inner pipe 1 is provided with recesses for fitting the excavation injection pipe 6, the cutting injection pipe 7, and the injection pipe 28, and the excavation injection pipe 6, the cutting injection pipe 7, and the injection pipe are provided. It is also possible to attach 28 by fitting in each recess.

  As shown in FIG. 1, in this example, four excavation injection pipes 6 are attached to the outer peripheral surface (outer wall) 1a of the inner pipe 1, and each excavation injection pipe 6 has an arrangement as shown in FIG. The excavation spray nozzle 3 is attached to the top. In this example, four excavation injection pipes 6 are attached to the outer peripheral surface (outer wall) 1a of the inner pipe 1, but the number is not limited to four and more excavation injection pipes 6 are attached. It is also possible to install less than four excavation injection pipes 6.

  Further, as shown in FIG. 1, in this example, one cutting injection pipe 7 is attached to the outer peripheral surface (outer wall) 1a of the inner pipe 1, and the cutting injection pipe 7 is shown in FIG. In this way, the cutting nozzle 4 is attached. The injection direction of the cutting injection nozzle 4 may be an angle in the range of 30 ° up and down with respect to the horizontal direction. In this example, the injection direction of the cutting injection nozzle 4 is 0 ° with respect to the horizontal direction, but it may be 0 ° to 30 ° above the horizontal direction, and from 0 ° below with respect to the horizontal direction. It may be 30 °. In this example, one cutting injection pipe 7 is attached to the outer peripheral surface (outer wall) 1a of the inner pipe 1, but not limited to one, a plurality of cutting injection pipes 7 are attached. Is also possible. Further, as shown in FIG. 1, in this example, one injection tube 28 is attached to the outer peripheral surface (outer wall) 1 a of the inner tube 1. In this example, one injection tube 28 is attached to the outer peripheral surface (outer wall) 1a of the inner tube 1. However, the number is not limited to one, and a plurality of injection tubes 28 can be attached. .

  Further, in this example, the excavation injection pipe 6, the cutting injection pipe 7, and the injection pipe 28 are attached to the outer peripheral surface (outer wall) 1a of the inner pipe 1, but the outer peripheral surface (outer wall) 1a of the inner pipe 1 is attached. Without being limited thereto, it is also possible to attach the excavation injection pipe 6, the cutting injection pipe 7 and the injection pipe 28 to the inner peripheral surface (inner wall) 1b of the inner pipe 1. On one end 1 d side (upper end side) of the inner tube 1, a hole 1 c for passing the coupling bolt 9 is provided. The coupling bolt 9 makes it possible to connect to the outer tube 2 that is a cylindrical body that houses the inner tube 1.

  That is, the outer tube 2 is also provided with a hole 2c at a position that overlaps with the hole 1c of the inner tube 1 when the inner tube 1 is accommodated, and the coupling bolt 9 is connected to the hole 2c and the inner tube 2 of the outer tube 2. The inner tube 1 and the outer tube 2 are connected by being incorporated in the hole 1c of the tube 1. The outer tube 2 functions as a member for preventing root anchors or sediment collapse. In this example, the axial length of the inner tube 1 and the axial length of the outer tube 2 in which the inner tube 1 is accommodated are substantially the same. However, the axial length of the inner tube 1 can be made longer than the axial length of the outer tube 2.

  And the short cylinder 20 which is the earth-and-sand holding apparatus 20 is accommodated in the other end part 1e side (tip part side) of the inner pipe 1, and the other end part 1e side (tip part side) of the inner pipe 1 is accommodated. ) Is provided with a fitting receiver 8 for connection with the short cylindrical body 20. Further, the short cylindrical body 20 includes a fitting tool 27 for fitting with the fitting receiver 8 provided on the other end 1 e side (tip end side) of the inner tube 1. The outer peripheral surface is provided at a position where it can be fitted with the fitting receiver 8 on the end side (tip side) of the inner tube 1. The specific fitting between the fitting receiver 8 of the inner tube 1 and the fitting 27 of the short cylindrical body 20 is shown in FIG.

  In this example, the inner peripheral surface (inner wall) 1b of the inner tube 1 includes a groove portion (first groove portion) 81 along the inner peripheral surface (inner wall) 1b of the inner tube 1 and a groove portion (first groove portion) shown in FIG. A fitting receiver 8 that is a plate-like member in which a groove opening 82 that is a second groove and a groove terminal end 83 is formed in a direction intersecting 81 is provided along an inner peripheral surface (inner wall) 1b. Further, the outer peripheral surface (outer wall) 20a protrudes from the outer peripheral surface (outer wall) 20a of the short cylindrical body 20 from the fitting 8 which is a protruding member shown in FIG. In order to connect the inner tube 1 having the fitting receiver 8 and the short cylindrical body 20 having the fitting 27 as shown above, as shown in FIG. The short cylindrical body 20 including the fitting tool 27 is put into the groove part 81 from the groove part opening 82 of the fitting tool receiver 8 of the inner tube 1. The fitting tool 27 that has entered the groove part 81 is slid in the groove part 81, and the bending part 84 causes the sliding direction of the fitting tool 27 to be substantially perpendicular to the direction of the groove part opening side, which is the direction of arrow B. The fitting tool 27 is slid in the direction crossing the short cylindrical body 20 to reach the bent portion 85.

  The fitting 27 of the short cylinder 20 reaches the bent portion 85 of the fitting receiver 8 of the inner tube 1 to complete the incorporation of the short cylinder 20 into the inner tube 1. In the fitting receiver 8 provided in the inner tube 1 of this example, a groove 81 extends from the bent portion 85 in the direction opposite to the groove opening 82 to form a groove end 83. By forming such a groove end 83, the fitting tool 27 moves to the groove end 83 along the arrow C direction when the short cylindrical body 20 is pressed by excavation during excavation work. When the fitting tool 27 moves to the groove end 83, the inner tube 1 and the short cylindrical body 20 are in a stable state, and excavation work can be performed in a stable state.

  Moreover, it is also possible to use the fitting receiver 8 as shown in FIG.3 (b), without being limited to the fitting receiver 8 as shown to Fig.3 (a). In FIG. 3A, the short cylindrical body 20 provided with the fitting tool 27 is put into the groove part 81 from the groove opening 82 of the fitting tool holder 8 of the inner tube 1 as in FIG. The fitting tool 27 that has entered the groove part 81 is slid in the groove part 81, and the bending part 84 causes the sliding direction of the fitting tool 27 to be substantially perpendicular to the direction of the groove part opening side, which is the direction of arrow B. The fitting tool 27 is slid in the direction crossing the short cylindrical body 20 to reach the bent portion 85. When the fitting tool 27 moves to the groove end 83, the inner tube 1 and the short cylindrical body 20 are in a stable state.

  However, the fitting receiver 8 of the inner tube 1 and the fitting tool 27 of the short cylindrical body 20 are short cylindrical on the other end 1e side (tip side) of the inner tube 1, as shown in FIG. It is not limited to the structure which accommodates (assembles) 20 and rotates the short cylindrical body 20 by rotating. For example, a hole is provided at a position of the fitting receiver 8 of the inner tube 1, a hole is provided at a position of the fitting 8 of the short cylindrical body 20, and these holes are overlapped to attach a bolt or a pin. The built-in inner tube 1 and the short cylindrical body 20 can be integrated (not separated). By incorporating the bolts or pins in this way, it is possible to prevent the short cylindrical body 20 from separating when the inner tube 1 rotates.

  As shown in FIGS. 4 and 5, an expansion body 21 is incorporated in the short cylindrical body 20. The expandable body 21 used in this example is made of rubber, but is not limited to rubber, and may be made of expandable fiber. In addition, in this example, the shape of the inflatable body 21 is a circular and unbroken tire tube shape, but is not limited to such a shape. For example, a rod-like tube with both ends closed is circular. The shape made into may be sufficient. As shown in FIG. 4, the expansion body 21 is provided along the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20 at the approximate center in the axial direction of the short cylindrical body 20.

  As shown in FIGS. 4 and 5, a reticulated body 22 is provided on the center side of the short cylindrical body 20 of the expanding body 21. The net-like body 22 used in this example is made of a resin having an appropriate strength enough to return to its original shape even when deformed, but is not limited to the resin, and is appropriate to return to its original value even when deformed. It may be made of metal as long as it has sufficient strength. The net-like body 22 has a cylindrical shape, and one end 22a has no cut, and the other end 22b has a cut along the axial direction of the net-like body 22 (the axial direction of the short cylindrical body 20). Is included. By using this net-like body 22, it becomes possible to hold earth and sand with low viscosity.

  And this expansion body 21 is being fixed to the net-like body 22 with the binding material 25, as shown in FIG. Specifically, a binding material 25 that is a string-like member is hung from above the mesh body 22 and wound around the mesh body 22 and the expansion body 21 to bind and integrate the mesh body 22 and the expansion body 21. As shown in FIG. 4, in this example, the bundling portions (locations that are difficult to expand due to fluid injection) 25 that bind the expansion body 21 and the net-like body 22 with the bundling material 25 are a plurality of locations. In particular, the number of locations where the expandable body 21 is wound and bound by the binding material 25 is not limited.

  By binding the expanding body 21 and the net-like body 22 with the binding material 25, the expanding body 21 only needs to expand uniformly. When the expanding body 21 is inflated, the binding materials 25, 25 of the expanding body 21 ( The function as the expansion body 21 can be achieved by forming the expansion body 21 in a star shape so that the space between the binding portions) extends toward the central axis direction of the short cylindrical body 20. Therefore, for example, it is possible to use a thin tube such as a bicycle tube. When the inflating body 21 is inflated, it protrudes toward the central axis direction of the short cylinder 20 and the transverse direction of the short cylinder 20 Thus, the number of locations where the expandable body 21 is wound and bound by the binding material 25 is determined so that the gap (space 33) is reduced.

  In addition, when the expansion body 21 and the net-like body 22 are incorporated into the short cylindrical body 20, first, the expansion body 21 is bound and integrated with the binding material 25 at a substantially central portion outside the net-like body 22. It inserts from the edge part side (it may be either of both ends) of the cylindrical body 20. Then, one end 22a of the mesh-like body 22 without a break is connected to a holder (supporting tool) 23 formed on an edge portion 20c provided toward the center of the short cylindrical portion 20 and the inside of the short cylindrical body 20. Push between the peripheral surface (inner wall) 20b. As shown in FIG. 5, the holder 23 is a protruding member extending in the axial direction of the short cylinder 20 along the inner peripheral surface (inner wall) 20 b of the short cylinder 20 from the edge 20 c. It is provided to face the inner peripheral surface (inner wall) 20b of the body 20.

  However, the holder 23 is not necessarily provided so as to face the entire inner peripheral surface (inner wall) 20b of the short cylindrical body 20, and partially faces the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. It is also possible to provide it. Further, the gap formed between the holder 23 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is quite narrow, and one end 22a of the mesh body 22 is connected to the inner peripheral surface of the holder 23 and the short cylindrical body 20. The inner wall 20b is a gap that allows one end 22a of the mesh member 22 to be fixed by being pushed (inserted) with the inner wall 20b. Further, another plate-like member is put in this gap, and one end portion 22a of the mesh-like body 22 pushed (inserted) between the holder 23 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is further fixed. It can also be strengthened.

  Next, the other end portion 22b of the mesh body 22 along the axial direction of the mesh body 22 (the axial direction of the short cylinder body 20) is the center of the short cylinder section 20 of the short cylinder section 20. It pushes between the stopper (support tool) 24 provided in the edge part 20d provided toward the side, and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. Similarly to the holder 23, the stopper 24 also extends in the axial direction of the short cylindrical body 20 along the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20 from the edge portion 20 d as shown in FIG. 5. It is a projecting member and is provided to face the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20.

  However, similarly to the holder 23, the stopper 24 is not necessarily provided so as to face the entire inner peripheral surface (inner wall) 20b of the short cylindrical body 20, and is partially provided on the inner peripheral surface of the short cylindrical body 20 ( It is also possible to provide it so as to face the inner wall 20b. In addition, the gap formed between the stopper 24 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is quite narrow, and the other end of the mesh body 22 is connected to the inner peripheral surface of the stopper 24 and the short cylindrical body 20 ( By pushing (inserting) into the gap between the inner wall 20b, the other end 22b of the mesh body 22 is not easily removed, and the mesh body 22 and the expansion body 21 are not easily separated from the short cylindrical body 20. It is.

  Further, an injection pipe 26 for injecting fluid into the expansion body 21 is connected (attached) to the expansion body 21 as shown in FIG. The injection pipe 26 includes a backflow prevention valve (not shown), and is connected to the injection pipe 28 provided on the outer peripheral surface (outer wall) 1a of the inner pipe 1 so as to be separable (detachable). In order to inflate the expansion body 21, the injection pipe 28 and the injection pipe 26 are connected, a fluid is sent to the injection pipe 28, and the fluid sent from the injection pipe 28 passes through the injection pipe 26 and then the expansion body 21. Fluid is injected into the.

  As shown in FIG. 6, the fluid injected into the expansion body 21 flows through the expansion body 21 along the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20 and expands the expansion body 21. When the expansion body 21 swells, it has been pushed into (inserted into) the gap between the stopper 24 provided on the edge 20c of the short cylindrical body 20 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. I) The other end 22b of the mesh-like body 22 is released (separated) (see FIG. 7). The other end 22b of the mesh body 22 is close to the central axis direction of the short cylindrical body 20, as shown in FIGS. 6 and 7, and the inside of the short cylindrical body 20 is partitioned (partitioned) by the mesh body 22. It becomes possible.

  The above is the configuration of the short cylindrical body 20 in this example, but the configuration of the short cylindrical body 20 is not limited to the above, and other configurations can be adopted.

  8 and 9 show another form of the short cylinder 20. The other basic configurations of the short cylindrical body 20 are the same, and the configurations different from those shown in FIGS. 4 and 5 and those shown in FIGS. 8 and 9 are shown in FIGS. The expansion body 21 is an integral type (tube-shaped), and the expansion body 31 shown in FIGS. 6 and 7 is a separation type (vertical separation type). Below, it demonstrates centering on the characteristic part of the short cylindrical body 20 shown in FIG.8 and FIG.9.

  As shown in FIGS. 8 and 9, an expansion body 31 is provided in the short cylinder 20 along the inner circumferential surface (inner wall) 20 b of the short cylinder 20 along the axial direction of the short cylinder 20. It has been. Like the inflatable body 21, the inflatable body 31 is not limited to rubber and may be made of inflatable fibers. The expansion body 31 is composed of a plurality of thick and short tube bodies 31a closed at both ends, and the plurality of tube bodies 31a are connected by a delivery pipe 29 for passing a fluid into the tube body 31a. . The tube body 31a has a vertically long shape extending along the axial direction of the short cylindrical body 20, and is separated along the inner peripheral surface (inner wall) in the transverse direction of the short cylindrical body 20. . One end of each tube body 31 a is fixed to the mesh body 21 by a binding material 25. Specifically, the binding material 25, which is a string-like member, is hung from above the mesh body 22 and wound around the mesh body 22 and each tube body 31a (expansion body 31), and the mesh body 22 and each tube body 31a (expansion). The body 31) is bound and integrated.

  As shown in FIGS. 8 and 9, a mesh body 22 is provided on the center side of the short cylindrical body 20 so as to cover the expansion body 31. The net-like body 22 used in this example is made of a resin having an appropriate strength enough to return to its original shape even when deformed, but is not limited to the resin, and is appropriate to return to its original value even when deformed. It may be made of metal as long as it has sufficient strength. The net-like body 22 has a cylindrical shape, and one end 22a has no cut, and the other end 22b has a cut along the axial direction of the net-like body 22 (the axial direction of the short cylindrical body 20). Is included.

  In addition, in assembling the expandable body 31 and the net-like body 22 into the short cylindrical body 20, first, a substantially central portion outside the net-like body 22 (the side facing the inner peripheral surface (inner wall) 20b of the short cylindrical body 20). A plurality of tube bodies 31 a that are bundled and integrated with the binding material 25 are inserted from the end side of the short cylindrical body 20 (which may be either end). Then, one end of the mesh body 22 without any breaks is provided with the holder 23 provided at the edge 20c provided toward the center side of the short cylindrical portion 20 and the inner peripheral surface (inner wall) of the short cylindrical body 20. Push between 20b. As shown in FIG. 9, the holder 23 is a protruding member extending in the axial direction of the short cylindrical body 20 from the edge 20 c along the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20. It is provided to face the inner peripheral surface (inner wall) 20b of the body 20.

  However, the holder 23 is not necessarily provided so as to face the entire inner peripheral surface (inner wall) 20b of the short cylindrical body 20, and partially faces the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. It is also possible to provide it. Further, the gap formed between the holder 23 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is quite narrow, and one end of the mesh body 22 is connected to the inner peripheral surface of the holder 23 and the short cylindrical body 20 ( The inner wall 20b is pushed into (inserted into) the gap so that one end of the mesh 22 can be fixed. Further, another plate-like member is put in this gap, and the fixing of the end portion of the mesh-like body 22 that is pushed (inserted) between the holder 23 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is made stronger. It is also possible.

  Next, the other end of the mesh body 22 along the axial direction of the mesh body 22 (the axial direction of the short cylinder body 20) is cut off from the center side of the short cylinder section 20 of the short cylinder section 20. It pushes between the stopper 24 provided in the edge part 20d provided toward and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. Similarly to the holder 23, the stopper 24 also extends in the axial direction of the short cylindrical body 20 along the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20 from the edge portion 20 d as shown in FIG. 9. It is a projecting member and is provided to face the inner peripheral surface (inner wall) 20 b of the short cylindrical body 20.

  However, the stopper 24 is not necessarily provided so as to face the entire inner peripheral surface (inner wall) 20b of the short cylindrical body 20, and partially faces the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. It is also possible to provide it. In addition, the gap formed between the stopper 24 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 is quite narrow, and the other end of the mesh body 22 is connected to the inner peripheral surface of the stopper 24 and the short cylindrical body 20 ( By pushing (inserting) into the gap between the inner wall 20b, the other end 22b of the mesh body 22 is not easily removed, and the mesh body 22 and the expansion body 21 are not easily separated from the short cylindrical body 20. It is.

  Further, an injection pipe 26 for injecting fluid into the expansion body 21 is connected (attached) to one tube body 31a as shown in FIG. The injection pipe 26 includes a backflow prevention valve (not shown), and is detachably connected to an injection pipe 28 provided on the outer peripheral surface (outer wall) 1a of the inner pipe 1. And in order to inflate the expansion body 31, the injection pipe 28 and the injection pipe 26 are connected, a fluid is sent to the injection pipe 28, and the fluid sent from the injection pipe 28 passes through the injection pipe 26. A fluid is injected into the expansion body 21. Specifically, the injection pipe 28 and the injection pipe 26 are connected, the fluid flows through the injection pipe 28, and the fluid that has flowed through the injection pipe 28 passes through the injection pipe 26 and is connected to the injection pipe 26. Fluid is injected into 31a.

  When the fluid is injected, the tube body 31a expands, and the fluid is sent to the other tube body 31a via the transfer pipe 29 connected to the tube body 31a. Finally, as shown in FIGS. 10 and 11, the fluid is sent to all the tube bodies 31a provided along the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 via the transfer pipe 29. As a result, all the tube bodies 31a are swollen. When the expansion body 21 swells, it has been pushed into (inserted into) the gap between the stopper 24 provided on the edge 20c of the short cylindrical body 20 and the inner peripheral surface (inner wall) 20b of the short cylindrical body 20. I) The other end 22b of the net-like body 22 comes off (separates) (see FIG. 11). The other end 22b of the mesh body 22 is close to the central axis direction of the short cylindrical body 20 as shown in FIGS. 10 and 11, and the inside of the short cylindrical body 20 is partitioned (partitioned) by the mesh body 22. It becomes possible. In the above, in FIGS. 3 to 11, the description of the cutting injection nozzle 4 including the cutting injection pipe 7 is omitted in order to clearly show the configuration in the short cylindrical body 20. 4 is provided on the other end 1 e side (tip end side) of the inner tube 1.

  In the above, on the edge 20c side of the short cylindrical body 20, one end 22a of the mesh body 22 is inserted and fixed between the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 and the holder 23, and the short cylindrical body 20 is fixed. On the edge 20d side of the cylindrical body 20, a configuration is shown in which the other end 22b of the mesh body 22 is inserted between the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 and the stopper 24 and temporarily held. However, without being limited to this configuration, one end of the mesh-like body 22 is disposed between the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 and the stopper 24 on the edge 20d side of the short cylindrical body 20. The portion 22 a is inserted and fixed, and one end 22 b of the mesh body 22 is inserted between the inner peripheral surface (inner wall) 20 b of the short cylinder 20 and the holder 23 on the edge 20 c side of the short cylinder 20. It is also possible to take a configuration of temporarily holding at.

  In this case, the cutting injection nozzle 4 is not provided on the other end 1e side (tip end side) of the inner tube 1 shown in FIG. It will be provided between the 20c side. Specifically, as shown in FIGS. 12 and 13, the cutting injection nozzle 4 can be provided on the edge 20 c of the short cylindrical body 20, and also like the cutting injection nozzle 4 indicated by a dotted line. It is also possible to provide between the expansion body 21 and the edge 20 c of the short cylindrical body 20. By taking the configuration as described above, fluid is ejected from the cutting ejection nozzle 4 so that the earth and sand in the short cylindrical body 20 is cut in a direction crossing the short cylindrical body 20. By cutting the earth and sand, a space is formed in the earth and sand in the short cylindrical body 20.

  Next, the fluid from the injection pipe 28 is sent to the expansion body 21 through the injection pipe 26, and the expansion body 21 expands. Due to the swelling of the expansion body 21, the reticulate body 22 is temporarily held by being inserted between the inner peripheral surface (inner wall) 20b of the short cylinder 20 and the holder 23 on the edge 20c side of the short cylinder 20. One end portion 22b of the short cylindrical body 20 is separated (separated) from between the inner peripheral surface (inner wall) 20b of the short cylindrical body 20 and the holder 23 (see FIG. 11). Since the other end 22b of the mesh body 22 has a cut along the axial direction (the axial direction of the short cylindrical body 20), when entering the space in which the other end 22b of the mesh body 22 is formed. The other end 22b of the mesh body 22 moves freely.

  Then, in the formed space, the other end 22b of the mesh body 21 along the axial direction of the mesh body 22 (the axial direction of the short cylindrical body 20) is expanded, and the other The end portions 22b overlap each other. By forming the overlapping portion 22c, the mesh body 22 is in a closed state as shown in FIGS. Therefore, the earth and sand in the short cylindrical body 20 (including the inside of the inner tube 1) descends into the space formed by cutting in the direction crossing the short cylindrical body 20, but it falls because the mesh body 22 is closed. The earth and sand that has been received and also lowered by the expanding body 21 is retained.

  Also in FIG. 12, the expansion body 21 and the net-like body 22 are bound by the binding material 25 not shown in FIG. 12, and are bound in the same manner as the short cylindrical body 20 shown in FIG. Also in FIG. 13, one end of each tube body 31 a constituting the expanding body 31 and the mesh body 22 are bound by the binding material 25, and are bound in the same manner as the short cylindrical body 20 shown in FIG. 11.

  In the short cylindrical body 20 shown above, the binding material 25 is used to bind the mesh body 22 and the expansion bodies 21 and 31, and the expansion bodies 21 and 31 are inflated to expand the expansion bodies 21 and 31 and the expansion body 21 and 31. A structure that mainly holds earth and sand in the short cylindrical body 20 (including the inside of the inner pipe 1), in particular, earth and sand with low adhesiveness such as gravel-mixed earth and backfill earth by the mesh body 22 on the bodies 21 and 31. However, the present invention is not limited to such a configuration. That is, some earth and sand have high adhesiveness such as a loam layer, and it is not necessary to use the net-like body 22 when handling (holding) such highly adhesive earth and sand.

  When the net-like body 22 is not used, in the short cylindrical body 20, the expansion bodies 21 and 31 are bound by the binding material 25, and the end of the binding material 25 that has been bound is used as the inner peripheral surface (inner wall) of the short cylindrical body 20. ) Will be fixed to 20b. As a fixing method, it is possible to fix the binding material 25 by bonding the end of the binding material 25 to the inner peripheral surface (inner wall) of the short cylindrical body 20 with an adhesive or the like. It is also possible to form a protrusion on the inner peripheral surface (inner wall) of the short cylindrical body 20 and to wind and fix the end portion of the binding material 25 that has been bound to the protrusion.

  As described above, in the short cylindrical body 20 that does not use the mesh-like body 22, as shown in FIGS. 14 and 15, the inflating bodies 21 and 31 (tube bodies 31 a) are inflated, whereby the inflating bodies 21 and 31 (tubes) The body 31 a swells in the direction of the central axis of the short cylindrical body 20. The space 32 centered on the central axis of the short cylindrical body 20 is larger than the space 33 in the case where the mesh body 22 is used even if the expansion bodies 21 and 31 swell by the amount not using the mesh body 22. However, since the earth and sand to be held are highly sticky earth and sand such as a loam layer, the earth and sand are unlikely to fall apart, and even if held only by the expansion bodies 21 and 31 (tube body 31a), the earth and sand are not easily spilled from the space 32. Become.

  The short cylindrical body 20 as described above is incorporated into the inner tube 1, and the contact member 5 is attached to the other end side (tip side) of the inner tube 1 in which the short cylindrical body 20 is incorporated. Yes. Specifically, as shown in FIG. 2, the contact member 5 is disposed on the other end side (tip end side) of the inner tube 1 between the digging injection nozzles 3 and 3, and the other end of the inner tube 1. It is formed in a gentle arcuate shape that is convex to the side opposite to the end side (tip side) (outside the inner tube 1). The material of the contact member 5 is a resin having a strength that does not damage (not damage) an embedded object such as a PVC pipe. Therefore, it is possible to prevent the embedded object such as the PVC pipe from being damaged by pushing the inner pipe 1 with a constant load.

  As described above, the short cylindrical body 20 is housed on the other end 1 e side (tip end side) of the inner tube 1, but a device other than the short cylindrical body 20 can be incorporated. In this example, the core cutter is made into a cartridge type and attached to the other end 1e side (tip end side) of the inner tube 1, thereby enabling pavement cutting with the rotation driving device of the inner tube 1. As shown in FIG. 16, the cartridge type core cutter 40 used in this example is housed (incorporated) with one end on the other end 1 e side (tip end side) of the inner tube 1. A cylindrical portion 41 having a cylindrical shape (an outer diameter smaller than the inner diameter of the inner tube 1) that is housed (incorporated) on the other end 1e side (tip end side) of the inner tube 1 is formed. Yes.

  Further, as shown in FIG. 16, a cutter portion 42 having a diameter larger than the cylindrical portion 41 is formed concentrically with the cylindrical portion 41 at the other end portion. The cutter part 42 also has a cylindrical shape, and the cutter part 42 rotates around the central axis of the cutter part 42 and performs paving cutting by abutting the rotating cutter part 42 against the roadbed. It becomes possible.

  In addition, the cartridge type core cutter 40 includes a fitting tool 47 for fitting with the fitting receiver 8 provided on the other end 1e side (tip end side) of the inner tube 1. The outer peripheral surface of the 40 cylindrical portions 41 is provided at a position where it can be fitted to the fitting receiver 8 on the end side (tip side) of the inner tube 1. For specific fitting between the fitting receiver 8 of the inner tube 1 and the fitting tool 47 of the cartridge-type core cutter 40, the fitting holder 8 of the inner tube 1 and the short cylindrical body 20 shown in FIG. This is the same as the fitting with the fitting tool 27.

  That is, the groove portion (first groove portion) 81 of the fitting receiver 8 provided on the other end portion 1e side (tip portion side) of the inner tube 1 and the groove portion (first groove portion) 81 intersect the second groove portion. The groove opening 82 and the groove end 83 are slidably fitted with the fitting tool 47 of the cartridge-type core cutter 40.

  However, the fitting receiver 8 of the inner tube 1 and the fitting 47 of the cartridge-type core cutter 40 are cartridge-type on the other end 1e side (tip side) of the inner tube 1, as shown in FIG. The configuration is not limited to the configuration in which the cylindrical portion 41 of the cartridge-type core cutter 40 is housed (assembled) in the cylindrical core cutter 40 and the cylindrical portion 41 of the cartridge-type core cutter 40 is rotated and fitted. For example, a hole is provided at a position where the fitting receiver 8 of the inner tube 1 is located, a hole is provided at a position where the fitting tool 8 of the cartridge type core cutter 40 is located, and these holes are overlapped to be bolts or pins. It is also possible to integrate the inner tube 1 and the cartridge-type core cutter 40 (no separation). In addition, although not shown, a connecting tool having a mechanism that can be connected to the rotation drive unit 60 is attached to the upper part of the cartridge-type core cutter 40 and directly connected to the rotation drive unit 60 without using the excavating and discharging device 30. Is possible.

  Furthermore, the inner tube 1 which is a cylindrical body is not limited to a uniform shape as shown in FIG. For example, as shown in FIG. 17, it is also possible to form a large number of holes 12a on the other end 12e side (tip side) of the inner tube 12 that is a cylindrical body. In FIG. 17, a plurality of hole portions 12 a are provided near the other end portion 12 e side (tip end side) of the inner tube 12 up to a half between the one end portion 12 d and the other end portion 12 e of the inner tube 12. Is provided. However, it is not limited to the half between the one end 12d and the other end 12e, and more than half the position from the other end 12e (to the one end 12d side) It is also possible to provide the hole 12a, and it is also possible to provide a plurality of holes 12a from the other end 12e to a position that is less than a half position.

  In this way, by providing a large number of holes 12 a in the inner pipe 12, excavation is performed with the high-pressure fluid injected from the excavation injection nozzle 3 and the cutting injection nozzle 4, so that the inner pipe 12 is inserted from the distal end portion of the inner pipe 12. When the fluid is accumulated in the short cylindrical body 20, when the inner pipe 12 is lifted to the ground (including the fluid in the inner pipe 12), the accumulated fluid may be discharged into the holes excavated from the many holes 12a. As a result, it is possible to minimize contamination of the workplace with drainage.

  In the case of the inner tube 12, similarly to the inner tube 1, a fitting receiver 8 for connecting to the short cylindrical body 20 is provided on the other end 12 e side (tip end side) of the inner tube 11. ing. The fitting receiver 8 provided on the other end 12e side (tip end side) of the inner tube 12 is fitted with the fitting 27 provided on the outer peripheral surface (outer wall) 20a of the short cylindrical body 20. It is provided at a position where it can be made. For specific fitting between the fitting receiver 8 of the inner tube 12 and the fitting tool 27 of the short cylindrical body 20, the fitting of the fitting holder 8 of the inner tube 1 and the short cylindrical body 20 shown in FIG. This is the same as the fitting with the fitting 27. Similarly to the inner tube 1, by providing a hole in the inner tube 12 and the short cylindrical body 20, bolts or pins are incorporated in the hole and the inner tube 12 and the short cylindrical body 20 are integrated (separated). It is also possible to eliminate it). In particular, it is possible to prevent the short cylindrical body 20 from being separated when the inner tube 1 is rotated. Also, the inner tube 12 can be fitted with the cartridge-type core cutter 40 in the same manner as the inner tube 1.

  As shown in FIG. 18, a device for operating the excavation and earthing device 30 is attached to the excavation and earthing device 30 having the above configuration. The apparatus for operating the excavation and excavation device 30 transmits the driving force from the rotary drive unit 60 to the excavation and excavation device 30 and supplies the excavation and excavation device 30 with fluid for excavating and cutting the sediment. It has a mechanism for sending. The fluid sent to the excavation and earthing device 30 may be either gas or liquid. In this example, water is used as the fluid. A swivel 61 is connected to a rotation driving unit 60 that applies a driving force for rotating the excavation and earthing device 30.

  As shown in FIG. 18, an inflow pipe 63 for sending a fluid is attached to the non-rotating outer portion of the swivel 61 having a double structure, and the rotating shaft of the inner portion (not shown) is connected to the connector. 64 is connected to the excavation and earthing device 30. Further, as shown in FIG. 18, a connection pipe 62 extends from the outer part of the swivel 61 that does not rotate, and the fluid sent from the inflow pipe 63 is used as the excavation jet pipe 6, the cutting jet pipe 7, The excavation injection pipe 6, the cutting injection pipe 7, and the injection pipe 28 are connected to each other for sending to the injection pipe 28. In this way, a device for operating the excavation and earthing device 30 is connected to the excavation and earthing device 30. Further, in the excavation and earthing device 30 shown in FIG. 18, the outer tube 2 houses the inner tube 1, and the outer tube 2 and the inner tube 1 are connected by a coupling bolt 9.

  Next, operations of pavement cutting, excavation, soil removal, and earth and sand loading will be described using the excavation and soil removal device 30 having the above configuration.

  First, the excavation jet pipe 6, the cutting jet pipe 7 and the injection pipe 28 of the excavation earth excavator 30 connected to the apparatus for operating the excavation excavation apparatus 30 are attached to the outer peripheral surface (outer wall) 1a. 16 is housed on the other end 1e side (tip end side) of the inner tube 1, and as shown in FIG. 3, the fitting receiver 8 of the inner tube 1 and The fitting tool 47 of the cylindrical portion 41 of the cartridge type core cutter 40 is fitted. Then, the excavation and earthing device 30 is brought into contact with the roadbed by a control device (not shown) connected to the rotation driving device 60, the excavation and earthing device 30 is rotated by the rotation driving device 60, and the paving is performed by the rotation of the cutter unit 42. Disconnect.

  After the pavement cutting is completed, the excavation and earthing device 30 is separated from the hole where the pavement cutting is performed on the roadbed side by a control device (not shown), and the inner end of the inner pipe 1 on the other end 1e side (tip side) is The fitting between the fitting receiver 8 of the tube 1 and the fitting 47 of the cylindrical portion 41 of the cartridge-type core cutter 40 is released, and the cartridge-type core cutter 40 is moved to the other end 1e side (tip portion) of the inner tube 1. Side). Then, the short cylindrical body 20 shown in FIG. 4 is accommodated in the other end portion 1e side (tip end side) of the inner tube 1, and as shown in FIG. The fitting tool 27 of the cylindrical body 20 is fitted. Then, the excavating and discharging device 30 is inserted into the hole by a control device (not shown) connected to the rotation drive device 10 (contacts the excavated soil).

  Then, the excavation and earthing device 30 is rotated by the rotation drive device 60, and water as a fluid is caused to flow through the inflow pipe 63 by the control device (not shown), and the water is sent to the excavation injection pipe 6 via the swivel 61. . The water sent to the excavation injection pipe 6 is injected from the excavation injection nozzle 3. In this state, the excavating and discharging device 30 is press-fitted (pushed) into the hole where the roadbed is cut by the control of a control device (not shown), and water is injected from the excavating injection nozzle 3 to excavate the earth and sand. When the upper end 2a of the outer tube 2 reaches the ground surface (GL) by continuing excavation (see FIG. 19), the coupling bolts incorporated in the hole 1c of the inner tube 1 and the hole 2c of the outer tube 2 9 is removed and pushed forward while excavating with the inner pipe 1 alone.

  When excavating to a certain depth with the inner pipe 1 alone, water injection from the excavation injection nozzle 3 is stopped. Then, the water is sent to the cutting injection pipe 7 via the swivel 61. The water sent to the cutting jet pipe 7 is jetted from the cutting jet nozzle 7. By the injection from the cutting injection nozzle 7, the earth and sand in the short cylinder 20 is cut in a direction crossing the axial direction of the short cylinder 20. After cutting the earth and sand in the short cylindrical body 20, the water injection from the cutting injection nozzle 7 is stopped. The air sent to the injection pipe 28 is sent from the injection pipe 26 to the expansion body 21 and the expansion body 21 expands.

  As shown in FIGS. 6 and 7, the expansion body 21 expands and holds the earth and sand cut by the water injection from the cutting injection nozzle 7 by the expansion body 21. At this time, since the mesh-like body 22 shown in FIGS. 6 and 7 is provided on the expansion body 21, soil and sand other than highly viscous soil and sand are also retained. In this way, the inner tube 1 to which the short cylindrical body 20 is attached is pulled up to the ground side by a control device (not shown) while holding the earth and sand taken into the short cylindrical body 20 including the inside of the inner tube 1. The inner tube 1 is moved horizontally while being lifted, and the tip of the inner tube 1 (the other end 1e of the inner tube 1) is lowered onto the truck bed or the seat.

  Next, the fitting 27 and the fitting receiver 8 that connect the short cylindrical body 20 and the inner tube 1 are rotated so that the short cylindrical body 20 can be separated, and the injection pipe 26 and the injection pipe are rotated. 28 is separated so that the short cylindrical body 20 and the inner tube 1 can be separated from each other, the inner tube 1 is lifted, and the earth and sand in the inner tube 1 are discharged (discharged) together with the short cylindrical body 20. Then, for the next excavation, another short cylindrical body 20 is accommodated in the distal end portion of the inner tube 1 (the other end portion 1e of the inner tube 1), and the same excavation work is performed to a specified depth.

  During the excavation and excavation work, the excavation and excavation device 30 is pushed in with a load that does not damage the buried object such as the PVC pipe while rotating the excavation and excavation device 30 having the contact member 5 at the tip. Since it pushes through the earth and sand only by the weight of the excavating and discharging device 30, it does not damage the buried object such as a PVC pipe. In this example, since the load detection sensor is attached to a control device (not shown), the force for pushing the excavation and earthing device 30 into the earth and sand can be made constant. You can determine whether you hit a hard object.

  When the load detection sensor detects a change in load, the injection of water from the excavation injection nozzle 3 is stopped, water is sent to the cutting injection pipe 7 and water is injected from the cutting injection nozzle 7, and the short cylindrical body The earth and sand in 20 is cut. After cutting the earth and sand in the short cylindrical body 20, water injection from the cutting injection nozzle 7 is stopped, and water from the injection pipe 28 is sent from the injection pipe 26 to the expansion body 21 to expand the expansion body 21. 6 and 7, the expansion body 21 expands to hold the earth and sand cut by the water injection from the cutting injection nozzle 7 by the expansion body 21 and includes the inside of the inner pipe 1. The inner tube 1 to which the short cylindrical body 20 is attached is pulled up to the ground side by a control device (not shown) while holding the earth and sand taken into the short cylindrical body 20.

  Then, the bottom of the hole portion in which the inner pipe 1 was placed is visually observed, and it is directly confirmed whether or not the load detection sensor detects the load fluctuation is a buried object such as a PVC pipe. For buried objects such as PVC pipes, such as buried pipes and underground conduits, the excavation position is slightly shifted (moved) so as not to hit such buried objects. Do soil work. As a result of visual confirmation, if the load detection sensor detects the load fluctuation is not an embedded object, the object is removed with a scoop or the like, and the excavation and excavation work is continued in the hole.

  In this example, a load detecting sensor is attached to a control device (not shown) and excavation and earthing work is performed. However, the present invention is not particularly limited to the load detecting sensor. It is also possible to perform excavation and soiling work by attaching a pressure sensor to the other end 1e of the inner pipe 1 or the contact member 5.

  In this example, the excavating and discharging apparatus 30 using the outer pipe 2 that houses the inner pipe 1 is shown. However, the outer excavating apparatus 30 is not necessarily required for the excavating and discharging apparatus 30, and the adhesiveness such as the loam layer is large. In the case of earth and sand, it is difficult for the hole wall to collapse, and therefore excavation and soiling work can be performed with the inner pipe 1 alone. In that case, the hole 1c of the inner pipe 1 and the connecting bolt 9 for connecting the outer pipe 2 and the inner pipe 1 are not necessary, and it becomes possible to improve the work efficiency of excavation and soil removal.

  In the above description, the excavation and excavation work is performed by using the excavation and excavation apparatus 30. However, the excavation and excavation apparatus 30 according to the present invention can be used for excavation and excavation work. Can also be used.

  In order to use the excavation and earthing device 30 as a steel pipe foundation, first, the excavation and earthing device 30 is rotated by the rotation driving device 60 of the device for operating the excavation and earthing device 30, and water is discharged from the excavation spray nozzle 3. Spray and excavate earth and sand. By continuing excavation, the upper end 1d of the inner pipe 1 is buried to a predetermined depth (being buried above the ground surface (GL) or buried below the ground surface (GL). Or after being buried to the same position as the ground surface (GL)), the rotation and excavation of the excavating and discharging device 30 to the earth and sand are stopped, and the press-fitting (pushing) to the earth and sand is stopped. Then, as shown in FIG. 20, a connecting tool (connecting flange) 51 is attached to the upper end 1 d of the inner tube 1, and the connecting tool (connecting flange) 51 and the lower flange 52 of the upper column 50 are overlapped with each other. Etc. will be connected.

  Further, the excavating and discharging apparatus 30 is rotated by the rotation driving device 60 of the apparatus for operating the excavating and discharging apparatus 30, and water is injected from the excavating injection nozzle 3 to excavate the earth and sand. When the upper end 2a of the outer tube 2 reaches the ground surface (GL) by continuing excavation (see FIG. 19), the coupling bolts incorporated in the hole 1c of the inner tube 1 and the hole 2c of the outer tube 2 9 is removed, and the inner tube 1 and the outer tube 2 are separated. The lower end of the inner tube 15 is connected to one end 1d of the inner tube 1 with a screw. Then, after excavating with the inner pipe 15 and the inner pipe 1 until the upper end portion 15a of the inner pipe 15 reaches the ground surface (GL), the excavating and discharging device 30 is stopped from rotating and excavating, and the earth and sand are stopped. Stop press-fitting into (pushing in). The inner tube 15 and the outer tube 2 are connected by a connecting bolt 9. In this way, it is possible to use a long foundation as shown in FIG. The long foundation shown in FIG. 21 also has a connecting tool (connecting flange) 51 attached to the upper end 2a of the outer tube 2, and the connecting tool (connecting flange) 51 and the lower flange 52 of the upper column 50 are overlapped to form a bolt or the like. Will be connected.

  FIG. 19 shows a state in which the upper end 2a of the outer tube 2 and the upper end 15s of the inner tube 15 have reached the ground surface (GL) (embedded to the same position as the ground surface (GL)) as an example. However, the outer tube 2 is not limited to a state in which the upper end 2a of the outer tube 2 and the upper end 15s of the inner tube 15 reach the ground surface (GL) (being buried in the same position as the ground surface (GL)). The upper end 2a and the upper end 15s of the inner tube 15 are embedded so as to be above the ground surface (GL), or embedded below the ground surface (GL), that is, embedded to a predetermined depth. Is possible.

  When a steel pipe foundation is put into the ground by rotary press-fitting or casting in an urban area or urban area where there is a high possibility that there is a buried object, it is necessary to conduct a buried object exploration survey in advance. However, when the excavation and earthing device 30 is used as a steel pipe foundation, it is possible to search for an embedded object at the same time as excavation, and when it hits an embedded object or a hard object, it can be excavated and the bottom of the hole can be visually observed. The earth device 30 is a device that can construct a steel pipe foundation while exploring buried objects.

  20 and 21, attachment of the connection flange 51 that is a connection tool to the upper end portion 2 a of the outer tube 2 is performed with a screw (not shown). 20 and 21, the connecting flange 51 is an integral type flange that is attached to the outer tube 2 and connected with screws. However, a separate flange (not shown) is attached to the outer tube 2 and screwed. It is also possible to connect with.

  In this way, the excavation and earth removal device 30 shown in FIGS. 20 and 21 does not remove the earth and sand taken into the short cylindrical body 20 including the inside of the inner pipe 1, and does not remove the earth and sand. It can be used as a steel pipe foundation for the column 50). The excavating and discharging device 30 can be used as a root of the electric pole by discharging the earth and sand in the inner pipe 1 and inserting the electric pole into the inner pipe 1 with soft ground or spring ground. It can also be used as a foundation as a self-supporting utility pole to be used. Furthermore, as shown in FIG. 20, when the outer tube 2 and the inner tube 1 have a double tube structure, they can be used for preventing the collapse of the hole wall near the ground surface (GL). .

It is explanatory drawing which shows the outline of the inner tube | pipe of the excavation earthing machine which is this invention. It is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of FIG. It is a schematic explanatory drawing which shows the relationship between a fitting tool and a fitting receiver. (A) is explanatory drawing which shows the movement of the fitting tool in the groove part of a fitting receiver. (B) is explanatory drawing which shows the movement of the fitting tool in the groove part from which the form of a fitting tool receiver differs. It is a schematic explanatory drawing which shows the outline of a short cylindrical body. It is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of FIG. It is explanatory drawing which shows the outline of the state which the expansion body in the short cylindrical body shown in FIG. 4 expanded. It is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of FIG. It is a schematic explanatory drawing which shows the outline of another form of a short cylindrical body. It is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of FIG. It is explanatory drawing which shows the outline of the state which the expansion body in the short cylindrical body shown in FIG. 8 expanded. It is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of FIG. It is a schematic explanatory drawing which shows the outline of the short cylindrical body which changed the attachment method of the net-like body. It is a schematic explanatory drawing which shows the outline of the short cylinder of another form which changed the attachment method of the net-like body. It is a schematic explanatory drawing which shows the outline of the short cylindrical body without a mesh body. (A) is explanatory drawing which shows the outline of the state which the expansion body in the short cylinder body without a mesh body swelled. (B) is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of (a). It is a schematic explanatory drawing which shows the outline of the short cylindrical body of another form without a mesh body. (A) is explanatory drawing which shows the outline of the state which the expansion body in the short cylindrical body of another form without a mesh body swelled. (B) is a schematic explanatory drawing shown from the cross-sectional direction which follows the AA line of (a). It is explanatory drawing which shows the outline of a cartridge type core cutter. It is explanatory drawing which shows the outline of the inner pipe of another form of the excavation earthing machine which is this invention. It is a schematic explanatory drawing which shows the state which attached the excavation earthing apparatus to the apparatus for operating an excavation earthing apparatus. It is a schematic explanatory drawing which shows the state which the upper end part of the outer tube reached to the ground surface (GL). It is a schematic explanatory drawing which shows the state which used the excavation earthing machine as a steel pipe foundation. It is a schematic explanatory drawing which shows another state which used the excavation earthing machine as a steel pipe foundation. It is a schematic explanatory drawing of the excavation apparatus of patent document 1. It is a schematic explanatory drawing which shows the support nail | claw part of the excavation apparatus of patent document 1 from a cross-sectional direction. It is a schematic explanatory drawing of the exploration excavation apparatus of patent document 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 12, 15 ... Inner tube, 1a ... Outer peripheral surface (outer wall), 1b ... Inner peripheral surface (inner wall), 1c ... Hole, 1d, 12d ... One end, 1e, 12e ... Other end, 12a DESCRIPTION OF SYMBOLS ... Hole, 15a ... Upper end, 15b ... Lower end 2 ... Outer pipe, 2a ... Upper end, 2c ... Hole 3 ... Excavation nozzle, 4 ... Cutting nozzle, 5 ... Contact member, 6 ... Excavation Injection pipe, 7 .. cutting injection pipe,
DESCRIPTION OF SYMBOLS 8 ... Fitting receiving, 81 ... Groove part, 82 ... Groove part opening, 83 ... Groove part terminal end, 84, 85 ... Bending part 9 ... Coupling bolt 20 ... Short cylindrical body (sediment holding device), 20a ... Outer peripheral surface (outer wall) 20b ... inner peripheral surface (inner wall), 20c, 20d ... edge, 21,31 ... expanded body,
22 ... Mesh body, 22a ... One end of the mesh body, 22b ... The other end of the mesh body, 22c ... Overlapping portion 23 ... Holding tool (support tool), 24 ... Stop tool (support tool), 25 ... Bundling material (bundling part), 26 ... injection pipe, 27 ... fitting tool, 28 ... injection pipe, 29 ... delivery pipe 30 ... excavation and earthing device 31a ... tube body 32, 33 ... space 40 ... cartridge type core cutter, 40a ... one end, 40b ... the other end, 41 ... cylindrical part, 42 ... cutter part, 47 ... fitting tool 50 ... upper column, 51 ... lower flange, 52 ... connector (connecting flange)
60 ... Rotation drive part, 61 ... Swivel, 62 ... Connection pipe, 63 ... Water supply pipe, 64 ... Connection tool

Claims (15)

An inner tube having a cylindrical shape;
An excavation injection pipe attached to the peripheral surface of the inner pipe, for excavating the soil along the axial direction of the inner pipe in order to excavate the earth and sand on the tip side of the inner pipe;
The fluid is ejected from the excavation jet pipe attached to the peripheral surface of the inner pipe to excavate the earth and sand, thereby cutting the earth and sand accommodated in the inner pipe from the earth and sand outside the inner pipe. A cutting injection pipe attached to the peripheral surface of the inner pipe for injecting fluid for
The inner peripheral surface of the inner tube on the tip end side is provided with a fitting receiver provided with a first groove along the inner peripheral surface and a second groove in a direction intersecting the first groove, A cylindrical body provided on the outer peripheral surface with a fitting tool which is a projecting body that fits the first groove part and the second groove part provided on the fitting tool receiver on the inner peripheral surface on the distal end side of the tube. The excavation and earthing device is housed in the distal end side of the inner pipe. In the cylindrical body that is the earth and sand holding device, an elastic cylindrical mesh attached to the inner peripheral surface of the cylindrical body along the axial direction of the cylindrical body, and
An expansion body attached to the mesh body, sandwiched between the inner peripheral surface of the cylinder body and the mesh body, and capable of expanding toward a central axis of the cylinder body;
In order to attach the cylindrical net-like body to the inner peripheral surface of the cylindrical body, a support provided at the edge on both ends of the cylindrical body facing the inner peripheral surface of the cylindrical body; The excavation and earthing device according to claim 1, wherein the cylindrical body is incorporated on the distal end side of the inner tube. An inner tube having a cylindrical shape;
An excavation injection pipe attached to the peripheral surface of the inner pipe, for excavating the soil along the axial direction of the inner pipe in order to excavate the earth and sand on the tip side of the inner pipe;
The fluid is ejected from the excavation jet pipe attached to the peripheral surface of the inner pipe to excavate the earth and sand, thereby cutting the earth and sand accommodated in the inner pipe from the earth and sand outside the inner pipe. A cutting injection pipe attached to the peripheral surface of the inner pipe for injecting fluid for
A cutting injection nozzle that is attached to the cutting injection pipe and that injects the fluid in the direction of the central axis of the inner pipe on the distal end side of the inner pipe;
On the inner peripheral surface on the distal end side of the inner tube, a first groove portion along the inner peripheral surface, and a fitting receiver provided with a second groove portion in a direction intersecting the first groove portion,
The inner tube provided with a projecting body fitted on the outer peripheral surface of the inner peripheral surface on the distal end side of the inner tube and fitted to the first groove portion and the second groove portion provided on the fitting receiver. A cylindrical body housed on the tip side,
In the cylindrical body, facing the inner peripheral surface of the cylindrical body along the inner peripheral surface of the cylindrical body provided at the edge portion of the cylindrical body opposite to the tip portion of the inner tube. A support member that is a protruding member that extends in the axial direction of the cylindrical body, and holds one end of the elastic cylindrical mesh body,
The other end portion of the mesh body having a cut along the axial direction of the mesh body is provided at the edge of the cylindrical body on the tip side of the inner tube. Support detachable,
The expansion body sandwiched between the inner peripheral surface of the cylindrical body and the mesh body is inflated by injecting a fluid from an injection tube attached to the outer peripheral surface of the inner tube and expanding. An excavating and discharging apparatus characterized in that a body is directed to a central axis of the cylindrical body, and the other end of the mesh body is separated from the support and holds the earth and sand in the cylindrical body. An inner tube having a cylindrical shape;
An excavation injection pipe attached to the peripheral surface of the inner pipe, for excavating the soil along the axial direction of the inner pipe in order to excavate the earth and sand on the tip side of the inner pipe;
The fluid is ejected from the excavation jet pipe attached to the peripheral surface of the inner pipe to excavate the earth and sand, thereby cutting the earth and sand accommodated in the inner pipe from the earth and sand outside the inner pipe. A cutting injection pipe attached to the peripheral surface of the inner pipe for injecting fluid for
On the inner peripheral surface on the distal end side of the inner tube, a first groove portion along the inner peripheral surface, and a fitting receiver provided with a second groove portion in a direction intersecting the first groove portion,
The inner tube provided with a projecting body fitted on the outer peripheral surface of the inner peripheral surface on the distal end side of the inner tube and fitted to the first groove portion and the second groove portion provided on the fitting receiver. A cylindrical body housed on the tip side,
In the cylindrical body, the cylindrical body is provided along the inner peripheral surface of the cylindrical body, facing the inner peripheral surface of the cylindrical body, provided at the edge of the inner tube on the distal end side. A support member, which is a protruding member extending in the axial direction of the cylindrical body , holding one end of the elastic cylindrical mesh body,
The other end of the cylindrical body provided with a cut along the axial direction of the mesh body, with the support provided on the edge of the cylindrical body opposite to the tip portion. Support the part detachably,
The cutting jet between the expansion body sandwiched between the inner peripheral surface of the cylindrical body and the mesh body and the edge side of the cylindrical body on the distal end side. A cutting injection nozzle attached to the pipe injects the fluid in the direction of the central axis of the inner pipe;
The expansion body is expanded by injecting a fluid from an injection pipe attached to the peripheral surface of the inner pipe, so that the expansion body faces the central axis of the cylindrical body, and the other end of the net-like body Excavation and soil removal equipment, wherein the excavation soil removal apparatus overlaps away from the support and holds the earth and sand in the cylindrical body. Provided on the outer peripheral surface of the inner peripheral surface on the distal end side of the inner tube is a fitting that is a projecting body that fits the first groove and the second groove provided on the fitting receiver. A cylindrical body housed on the distal end side of the inner tube;
An earth and sand holding device, which is attached to the inner peripheral surface of the cylindrical body and is capable of expanding toward the central axis of the cylindrical body, is incorporated on the distal end side of the inner pipe. The excavation and earthing device according to claim 1, wherein   The inflatable body is provided in series along the inner circumferential surface in the transverse direction of the cylindrical body, and a plurality of narrowed portions that are difficult to expand by injecting fluid into the inflatable body are provided. The excavation and earthing device according to any one of claims 2 to 4, wherein   The inflatable body is provided separately from the inner peripheral surface of the cylindrical body along the transverse inner peripheral surface of the cylindrical body, and has a shape extending along the axial direction of the cylindrical body. The excavation and earthing device according to any one of claims 2 to 4.   In order to inject fluid into the expansion body from the injection pipe attached to the peripheral surface of the inner pipe, the expansion body includes an injection pipe that is detachably attached to the injection pipe. The excavation and earthing device according to claim 3 or 4.   A plurality of excavation injection pipes are attached to the peripheral surface of the inner pipe, and excavate the earth and sand. On the distal end side of the inner pipe, the excavation injection nozzles are respectively provided on the excavation injection pipes. And a contact member is provided between the spray nozzles for excavation, which is formed in an arc shape convex to the outside of the inner pipe and prevents damage to the buried object. The excavation and earthing device according to any one of claims 1 to 5.   A cartridge-type core cutter, which is continuous with the cylindrical portion that is the cylindrical body, is formed concentrically with the cylindrical portion and is rotatable around a central axis, is incorporated on the distal end side of the inner tube. The excavation and earthing device according to claim 1.   The excavation and earthing device according to any one of claims 1 to 8, wherein a plurality of holes are provided near the tip of the inner pipe.   10. The excavation and earthing device according to claim 1, wherein the inner pipe is accommodated in an outer pipe that is equal in length to an axial direction of the inner pipe or shorter than an axial length of the inner pipe. . The earth and sand holding device according to claim 2 is housed in the distal end side of the inner pipe of the excavation and earthing device according to claim 1, and the fitting receiver of the inner pipe and the earth and sand holding device are A fitting tool is fitted, the excavation earthing device is rotated, a fluid is sent to the excavation injection pipe, and the fluid sent to the excavation injection pipe is attached to the excavation injection pipe Spraying from the excavation spray nozzle,
The step of abutting the excavation and earth discharging device against the earth and sand to be excavated, and excavating the earth and sand by injecting the fluid from the injection nozzle for excavation;
After the excavation and earthing device finishes excavating earth and sand, the injection of the fluid from the excavation injection nozzle is stopped, the fluid is sent to the cutting injection pipe, and the fluid injected from the cutting injection nozzle is used. Cutting the earth and sand in the earth and sand holding device in a direction crossing the axial direction of the earth and sand holding device;
A fluid is sent to an injection pipe attached to the outer peripheral surface of the inner pipe, and the fluid sent to the injection pipe is sent to the expansion body from an injection pipe detachably connected to the injection pipe. Inflating the body, holding the earth and sand cut by the fluid jet from the cutting jet nozzle by the expansion body and the mesh body,
While holding the earth and sand, the excavating and discharging apparatus is pulled up to the ground side, and the fitting receiver and the fitting that connect the excavating and discharging apparatus and the earth and sand holding apparatus are rotated. And detaching the injection pipe and the injection pipe to make the excavation and earthing device and the earth and sand holding device separable, and discharging the earth and sand of the excavation and earthing device together with the earth and sand holding device. A drilling and earthing method comprising: a step. An upper end portion of the inner pipe by rotating the inner pipe of the excavation and earthing device according to claim 2 and jetting the fluid from a jet nozzle for excavation attached to the excavation jet pipe to excavate earth and sand. After burying to a predetermined depth, a connecting tool is attached to the upper end portion of the inner pipe, and the connecting tool and the lower flange of the upper column are overlapped and connected. An excavation spray nozzle attached to the excavation jet pipe, wherein the inner pipe of the excavation and earthing device according to claim 2 is housed in the outer pipe and the inner pipe and the outer pipe are fixed and rotated. By excavating the soil by jetting the fluid, the upper end portion of the outer pipe is buried to a predetermined depth, the inner pipe and the outer pipe are separated, only the inner pipe is rotated, and the jet for excavation After excavating the soil by ejecting the fluid from the nozzle, the upper end of the outer pipe is buried to a predetermined depth, and then a connecting tool is attached to the upper end of the outer pipe, and the lower part of the connecting tool and the upper column Excavation and soil removal equipment characterized by overlapping and connecting flanges.

Images