JP4903732B2 - Dredge equipment - Google Patents

Description

  The present invention relates to a dredging device, and more particularly, it is possible to make the device compact and to perform work efficiently even in a narrow site such as a dam lake, as well as underwater in various states. It is related with the dredge apparatus which can respond to.

  Conventionally, various dredging methods and apparatuses for lifting sediments such as rivers and lakes from the bottom to the water have been proposed. Dredging work is generally carried out by installing large dredging facilities on large work boats or on the land surrounding the dredged water area, and moving the dredging pump itself or the suction port of the hose connected to the dredging pump at the bottom of the water. ing.

  However, it was difficult to use a large ship or install a large device in a narrow site where a large space such as a dam lake could not be secured. In addition, the conventional large-scale dredging apparatus has a problem that it is difficult to dredge efficiently because dredging in a narrow local water area is lacking in mobility.

As a device that can perform dredging without using a large-scale facility, connect a tow rope to an aspirator placed at the bottom of the water, and pull the tow rope from the ground to place the aspirator at any position on the bottom of the water. There has been proposed an apparatus for moving the device (for example, see Patent Document 1). However, in this proposed dredging device, the bottom surface of the suction device has a flat shape, so when moving on the bottom of the water, it may be caught by the unevenness of the bottom of the water, or may fall over, so that the dredging work is performed smoothly. There was a problem that I could not. In addition, this dredging device has a problem that it is difficult to move the bottom of the water because it is buried in the earth or sand depending on the bottom of the soil, or a great amount of force is required to move it.
JP-A-1-295926

  An object of the present invention is to provide a dredging device that can be efficiently operated even in a narrow site such as a dam lake by making the device compact, and can cope with water bottoms in various states. It is in.

In order to achieve the above object, a dredge apparatus according to the present invention is connected to a wire extending from the surface of the water, and moves to the bottom of the water area to be dredged, and connected to the water bottom moving body to be on the water. A suction hose extended; and a pump connected to the suction hose. The bottom surface of the bottom moving body is formed in a protruding shape with a central portion protruding downward, and the suction hose is formed at the central portion of the bottom surface. A suction port that communicates is disposed, weight adjusting means is provided at a lower part of the bottom moving body, at least three wires extending from the water and connected to the bottom moving body are provided, and wire drawing / withdrawing means for each wire Is disposed in the land area around the water area to be dredged, and a control device is provided for controlling the wire drawing amount and the drawing amount of the wire drawing / drawing means for the respective wires. Prior data about the depth of the water area, previous data after the dredging, and targeted target data are inputted to the control device, and based on these inputted data, the wire of the wire drawing / drawing means for the respective wires. The amount of withdrawal and the amount of withdrawal are controlled .

  Moreover, in this invention, a buoyancy adjustment part can also be provided in the upper position rather than the weight adjustment means of the said water bottom moving body. The weight adjusting means may be constituted by a weight and a weight fixing portion that fixes the weight to the water bottom moving body. Moreover, the said pump can also be mounted in a water bottom moving body.

  According to the present invention, a simple configuration in which a suction hose extending on the water connected to a pump is connected to a water bottom moving body that is connected to a wire extending from the water and moves on the bottom of the water area to be dredged. Therefore, the dredging device can be made compact.

  In addition, the bottom surface of the bottom moving body is formed in a protruding shape with the central portion protruding downward, and a suction port communicating with the suction hose is disposed at the center of the bottom surface, and weight adjusting means is provided at the bottom of the bottom water moving body. As a result, the position of the center of gravity can be lowered, so that even if there is a large unevenness on the bottom of the water, it becomes difficult to be caught, and it will get up even if it is about to fall. Moreover, even if the bottom soil is soft, the bottom moving body can be smoothly moved without being buried. In addition, by forming the bottom surface of the water bottom moving body in a projecting shape, water is more easily sucked from the suction port along the projecting bottom surface than the flat bottom surface. You can inhale without.

  In this way, even if the water bottom is in various states, it is possible to move the suction port smoothly and freely to any position via the wire, so that dredging can be performed efficiently even in a locally narrow water area. Can be performed.

  The dredge method and apparatus of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIGS. 1 to 4, the dredging device 1 of the present invention has four winches 5 that are arranged in the land area around the water area A to be dredged. Each wire 7 extending from the four winches 5 is connected to a water bottom moving body 8 arranged at the bottom of the water area A.

  A suction hose 4 extending on the water is connected to the water bottom moving body 8, and the suction hose 4 is connected to a pump 2 installed in a peripheral land portion of the water area A. The suction hose 4 is extended to the land by being held by a plurality of buoys 16 in the middle in the longitudinal direction.

  The water-bottom movable body 8 is formed by sandwiching a cylindrical body 8c vertically between hemispherical bodies 8a and 8b and connecting the flange portions 9a and 9a with bolts 10a and nuts 10b. . By interposing the packing 9c between the flange portions 9a and 9a to be joined, the water bottom moving body 8 is a hollow body with high water tightness. Each wire 7 is connected to the flange portion 9a of the lower hemispherical body 8b or the flange portion 9a of the cylindrical body 8c.

  As described above, the bottom surface of the water bottom moving body 8 is formed in a spherical shape with the central portion protruding downward, and the suction port 3 is provided in the central portion of the bottom surface. A suction pipe 4a is erected upward from the suction port 3, and an upper end portion of the suction pipe 4a protrudes from the hemispherical body 8a. The suction pipe 4 a and the suction hose 4 are connected by connecting the flange portions 4 b and 4 b so that the suction port 3 communicates with the suction hose 4. In the present invention, the central portion of the bottom surface of the water bottom moving body 8 may be a protruding shape that protrudes downward, and in addition to the spherical shape illustrated in the embodiment, an elliptical spherical shape or a polygonal protruding shape. Etc. can be formed.

  In addition, weight adjusting means 12 that can change the position of the center of gravity of the water bottom moving body 8 is provided in the lower part (the lower body 8b) of the water bottom moving body 8. In this embodiment, the position of the center of gravity of the bottom moving body 8 is lowered by using the sand iron accommodated in the lower body 8b as the weight adjusting means 12. Various weight additions can be used as the weight adjusting means 12 without being limited to iron sand.

  Further, a buoyancy adjusting unit 14 is provided in a portion of the water bottom moving body 8 that is located above the weight adjusting means 12. In this embodiment, the buoyancy adjusting unit 14 is configured by accommodating foamed foam material or the like in the upper body 8a. The buoyancy adjusting unit 14 may be provided as necessary, and the buoyancy adjusting unit 14 may be configured by sealing air.

  Each winch 5 is provided with a wire length detector 6 that detects a feeding length (drawing length) and a winding length (drawing length) of the wire 7. The detection data of the wire length detector 6 is set so as to be input to the control device 15 placed at a predetermined position on the land via a wireless LAN. The winch 5 is set to be controlled through the wireless LAN by the control device 15. It is also possible to input the detection data of the wire length detector 6 to the control device 15 placed at a predetermined position in the land portion through a wire, and to control each winch 5 by the control device 15 through the wire.

  Hereinafter, the procedure of the dredging operation using the dredging device 1 will be described.

  By controlling the forward rotation and reverse rotation of each winch 5 and the feeding amount and winding amount of each wire 7, the water bottom moving body 8 is moved to a predetermined position where work starts. Next, the pump 2 is operated to suck the earth and sand G from the suction port 3, and is pumped up to the water through the suction hose 4. As the pump 2, not only a general sand pump but also a water jet pump can be used.

  By controlling each winch 5 after the work starts, the water bottom moving body 8 is moved in a state of being in contact with the water bottom in the water area A indicated by a two-dot chain line. Various combinations of the control of the four winches 5 (forward and reverse rotation, control of the feeding amount and winding amount of the wire 7), the water bottom moving body 8 (suction port 3) can be placed at any position (position in the X direction). And Y-direction position) can be easily controlled.

  This movement control is performed based on the data input from the wire length detector 6 to the control device 15, and the suction port 3 is moved while the pump 2 is operated so as to cover the water area A. The soil G on the bottom of the water area A is dredged.

  The bottom of the water is not only flat, but may have irregularities or fallen trees or the like. However, according to the dredge apparatus 1 of the present invention, the spherical surface whose central portion projects downward from the bottom of the water bottom moving body 8. Since it is formed in a shape, it becomes difficult to be caught even when there are large irregularities or the like on the bottom of the water, and it can move in a state where it smoothly contacts the bottom of the water in all horizontal directions. Moreover, by lowering the position of the center of gravity by the weight adjusting means 12 provided in the lower part of the water bottom moving body 8, it is possible to get up even if it is caught by the unevenness of the water bottom and falls.

  Here, since the suction inlet 3 is arrange | positioned in the center part of the bottom face of the bottom moving body 8, it will always be in the position close | similar to the surface of the earth and sand G, and can absorb the earth and sand G efficiently, without sucking an extra water | moisture content. it can. Further, even when the water bottom soil is soft, the spherical bottom surface reduces friction with the earth and sand G generated when the water bottom moving body 8 is moved, so that it can be moved smoothly without being buried in the earth and sand G. .

  Further, in order to suck the earth and sand G, it is necessary to suck not only the earth and sand G but also water. For this reason, when the bottom surface of the water bottom moving body 8 is planar, water cannot be sucked along the planar bottom surface in a state where the suction port 3 is buried in the earth and sand G, and the sand and sand G are hardly sucked. However, by forming the bottom surface of the water bottom moving body 8 in a projecting shape, it becomes easier to suck water compared to the flat bottom surface, and accordingly, even if the suction port 3 is buried in the earth and sand G. It can be sucked without clogging the earth and sand G.

  As described above, even when the water bottom is in various states, the water bottom moving body 8 moves smoothly in contact with the water bottom, and the earth and sand G can be sucked in efficiently, so that the dredging work can be performed efficiently. it can.

  Since the water bottom moving body 8 can smoothly move on the water bottom, it is possible to avoid an excessive load on the wire 7. The wire 7 is connected as much as possible to the bottom moving body 8, for example, below the vertical position of the center of gravity of the bottom moving body 8, so that the bottom moving body 8 is staggered when the wire 7 is pulled and moved. Can be further suppressed.

  Furthermore, the buoyancy acting on the bottom moving body 8 can be set appropriately by the buoyancy adjusting unit 14 according to the bottom soil quality, the uneven state, and the like. For example, in the case of soil having a large friction, the buoyancy acting on the bottom moving body 8 is increased by increasing the amount of foamed foam material or the like, thereby ensuring smooth movement of the bottom moving body 8. On the other hand, in the case of soil with low friction, the buoyancy acting on the water bottom moving body 8 is reduced by reducing the amount of foamed foam material, or the buoyancy is eliminated and the amount to be submerged in the earth and sand G is increased. Set so that a large amount of earth and sand G can be sucked up at once.

  The number of winches 5 is not limited to four, and may be at least three. As illustrated in FIG. 6, the saddle device 1 can be configured using three winches 5. The control for each winch 5 is the same as in the above-described embodiment.

  In the embodiment of FIG. 6, the movable range of the water bottom moving body 8 (suction port 3) is a triangular water area A indicated by a two-dot chain line. Therefore, in the case where the range that is drowned at once can be covered by the water area A of this triangle, it is beneficial because the minimum three winches 5 can be formed. As illustrated in FIG. 1, when the number of winches 5 arranged in the peripheral land portion of the water area A is four, the movable range of the water bottom moving body 8 (suction port 3) can be maximized.

  In each of the above-described embodiments, when dredging another water area A, the winch 5 is rearranged to another position and the same dredging operation is performed.

  As described above, according to the dredger 1 of the present invention, since the water bottom moving body 8 (suction port 3) can be controlled from the land by wireless operation or wired operation, a large work ship is not required. Further, since a small space is sufficient for arranging the winch 5, the dredger device 1 has a compact configuration.

  As a result, the dredging apparatus 1 can be used without much time and expense even on the site of a dam lake or the like where there is no flat land in the periphery and the working space is narrow and it is difficult to use ordinary work boats and equipment. Can be carried in and installed. In addition, by controlling each winch 5, the suction port 3 can be moved to an arbitrary position, so that dredging can be performed efficiently even in a locally narrow water area.

  The pump 2 can be mounted not only on the land portion but also on the water bottom moving body 8 as illustrated in FIG. This water-bottom moving body 8 is configured such that hemispherical bodies 8a and 8b are vertically sandwiched between pillar members 11 which are provided at equal intervals in the circumferential direction, and the flange portions 9a and the upper and lower ends of the pillar members 11 It is formed by joining together by welding or the like. The wire 7 of each winch 5 is connected to the flange portion 9a of the lower hemispherical body 8b. A pump 2 is erected in the water bottom moving body 8 surrounded by the column members 11.

  In this way, the bottom surface of the water bottom moving body 8 is formed in a spherical shape with the central portion protruding downward, and the suction port 3 is provided in the central portion of the bottom surface, and the reducer 3a whose diameter increases upward is provided. Via the suction port at the lower end of the pump 2. The discharge port at the upper end of the pump 2 is connected to the lower end of the suction pipe 4a that protrudes from the hemispherical body 8a.

  The suction pipe 4 a and the suction hose 4 are connected by connecting the flange portions 4 b and 4 b so that the suction port 3 communicates with the suction hose 4. In this embodiment, the pump 2 is mounted on the water bottom moving body 8 instead of the pump 2 arranged in the land portion shown in FIG.

  An anchor bolt 12a is erected on the upper surface of the flange portion of the lower body 8b. The anchor bolt 12a is inserted into the weight 13 and screwed into the nut 12b, whereby the weight 13 is fixed to the water bottom moving body 8. In this embodiment, the anchor bolt 12a and the nut 12b are weight fixing portions. The weight fixing means and the detachable weight 13 constitute the weight adjusting means 12. Therefore, the position of the center of gravity of the water bottom moving body 8 can be changed by adjusting the weight of the weight 13 to be fixed.

  In addition, a buoyancy adjusting unit 14 is provided at a position above the weight adjusting means 12. The configuration and procedure for controlling the operation of each winch 5 to move the water bottom moving body 8 in contact with the water bottom is the same as that of the above-described embodiment.

  According to this embodiment, since the pump 2 itself can function as the weight 13 of the weight adjusting means 12, the weight 13 can be reduced.

In the present invention, the dredging operation is performed as follows . Before the dredging, the water depth of the water area A is measured three-dimensionally in advance by a narrow multi-beam sounding device, and this is input to the control device 15 as prior data. In addition, the target three-dimensional water depth data is also input. Then, after dredging within a predetermined range, the water depth of the water area A is measured three-dimensionally by a narrow multi-beam sounding device, and this is input to the control device 15 as subsequent data.

  Next, the posterior data and the target data are compared, and it is determined whether or not the difference between the two data is larger than the reference value, and it is determined whether or not there is a range where the wrinkle is insufficient. Thus, the dredging operation is performed again for the range where it is determined that dredging is insufficient and the earth and sand G needs to be dredged.

  Thus, the preliminary data before dredging, the subsequent data after dredging, and the target data to be targeted are input to the control device 15 and the wire 7 of the winch 5 is selected based on these input data. By controlling the feeding and winding, the bottom of the water can be dredged with the target terrain with higher accuracy.

  In each of the above embodiments, the winch 5 is illustrated as the wire drawing / drawing means, but other devices and mechanisms may be used as long as the wire 7 can be drawn and drawn. For example, the wire 7 can be pulled out and retracted using a fluid cylinder advance / retreat operation, a backhoe, or the like.

  Further, as in the embodiment illustrated in FIG. 7, one end of the wire 7 extended from the surface of the water can be fixed to the ship 17 and the other end of the wire 7 can be connected to the water bottom moving body 8. The configuration other than the wire 7 can be the same as that of the above-described embodiment. In this embodiment, the water bottom moving body 8 is provided with a suction hose 4 extending on the water and a pump 2 connected to the suction hose 4, and the central portion of the bottom surface of the water bottom moving body 8 protrudes downward. Is formed. A suction port 4 a communicating with the suction hose 4 is arranged at the center of the bottom surface of the water bottom moving body 8. Furthermore, weight adjusting means 12 is provided at the bottom of the bottom moving body 8.

  In the embodiment of FIG. 7, the wire 7 connected to the water bottom moving body 8 is connected to a crane disposed in the peripheral land portion of the water area to be dredged, and the water bottom moving body 8 is arbitrarily connected to the water bottom by operating the crane. It can also be moved to a position.

It is a top view which illustrates the dredge apparatus of this invention. It is a side view which illustrates the water bottom part of FIG. It is a side view which illustrates the water bottom moving body of FIG. FIG. 4 is a plan view of FIG. 3. It is a side view which shows another example of a water bottom moving body. It is a top view which illustrates another embodiment of a dredge apparatus. It is a side view which illustrates another embodiment of a dredge apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dredge 2 Pump 3 Suction port 3a Reducer 4 Suction hose 4a Suction pipe 5 Winch (Wire drawing / drawing means)
6 Wire length detector 7 Wire 8 Water bottom moving body 8a, 8b, 8c Body 9a Flange 9b Packing 10a Bolt 10b Nut 11 Supporting member 12 Weight adjusting means 12a Anchor bolt 12b Nut 13 Weight 14 Buoyancy adjusting unit 15 Controller 16 Buoy 17 ships

Claims (4)

A bottom moving body that is connected to a wire extending from the surface of the water and moves along the bottom of the water area to be dredged, a suction hose that is connected to the bottom movement body and extends above the water, and is connected to the suction hose And a bottom surface of the bottom moving body is formed in a projecting shape with a central portion protruding downward, and a suction port communicating with the suction hose is disposed in the central portion of the bottom surface. Weight adjusting means is provided in the lower part, and at least three wires extending from the water and connected to the bottom moving body are provided, and wire drawing / withdrawing means for each wire is provided in the surrounding land portion of the dredged water area. A control device for arranging and controlling the wire drawing amount and the drawing amount of the wire drawing / drawing means for each wire, and prior data about the water depth of the water area, Post-post data and target data to be targeted are input to the control device, and the wire drawing amount and the drawing amount of the wire drawing / drawing means for the respective wires are controlled based on the input data. the dredging equipment. The dredge apparatus of Claim 1 which provided the buoyancy adjustment part in the upper position rather than the weight adjustment means of the said water bottom moving body. The dredge apparatus according to claim 1 or 2 , wherein the weight adjusting means includes a weight and a weight fixing portion that fixes the weight to the water bottom moving body. The dredge apparatus according to any one of claims 1 to 3 , wherein the pump is mounted on a water bottom moving body.

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