JP2582731B2 - Local compaction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local rolling device for compacting test holes and other local holes with gravel or the like.

[0002]

2. Description of the Related Art Conventionally, a survey hole for investigating whether a water pipe, a gas pipe, or the like is buried underground in a city area, a soil survey hole, or a survey hole for constructing a telephone pole, etc.
A hole with a diameter of about 35 cm and a depth of about 1.5 m is being drilled. After the survey, the excavated hole is backfilled with excavated soil or other gravel and compacted as shown in Fig. 5 with a ram sticking against the top surface of the backfilled excavated soil or gravel. It is.

[0003]

However, it is time-consuming to squeeze the surface of the excavated soil or gravel or the like with a pier while backfilling the excavated soil or gravel or the like in the test drilling hole. Even if it is crushed to the same plane as the ground, the crushed surface will be eroded by rainwater etc. and will sink, and it will be a hindrance to walking as it is, so replenish gravel etc. in the sinking part again It had to be squeezed, and required a lot of trouble. In addition, there is a rammer device with an engine that compacts soil and gravel, but the shape of the rammer plate that compacts gravel cannot be inserted into the circular hole that was trial-excavated in a square shape. However, in the case of a square rammer plate inserted in a circular hole, the rolling pressure at the corners was weaker than that at the center, so that rolling compaction appeared and it was not possible to obtain a sufficient degree of tightening, and the compact was rolled. There was a problem that the surface easily collapsed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a vibrating mechanism and a rammer surface corresponding to a test drilling hole and to bury the rammer portion in the test drilling hole while inserting the same into the hole. The returned soil and gravel can be compacted evenly and densely, and it is easy to descend into the test hole in the rammer part and to ascend after compacting the gravel surface. It is an object of the present invention to provide a local rolling device capable of easily positioning and rolling.

[0005]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 comprises a machine frame 12 and a machine frame 1.
2 having a desired rammer surface 14 corresponding to the shape of the backfill hole and a vibrating section 18 having a vibration generating mechanism 16. It is composed of a local compaction device 10 which is mounted to be vertically movable by means 22.

Further, in the invention according to claim 2, the rolling body 20 may be provided on the machine frame 12 so as to be movable.

According to the third aspect of the present invention, the machine frame 12 comprises a machine base 24 and a support post 26, and the machine base 24 is provided with at least two rolling elements 20.
Leg portions 34 may be provided so as to form a three-point support together with the rolling elements 20.

Further, in the invention according to claim 4, the machine base 24 is formed in a substantially U-shaped frame or an annular shape, and
8 may be provided so as to be able to move up and down with respect to the U-shaped frame or the annular interior.

Further, in the invention according to claim 5, the up-and-down moving means 22 may be a chain block 68.

In the invention according to claim 6, the machine frame 12 has a three-point support state by the rolling elements 20 and the legs 34, and the rolling elements 20 are lifted and floated on the legs 34 side.
The handle 82 may be rotatably attached so as to selectively take the two-point support state by only the handle 82.

[0011]

In the local compaction device according to the present invention, the machine frame is positioned at the position of the test hole, and the rammer portion is disposed above the test hole. Therefore, the vibration generating mechanism in the rammer part and the vertical movement means which attached the rammer part vertically are connected to the power supply respectively, and the switch was operated to lower the rammer part into the test drilling hole, and on the top surface of the gravel refilled in the test drilling hole The vibration generating mechanism is driven by a switch operation after the lower surface of the rammer section is grounded, and the vibration pressure is transmitted while transmitting the vibration pressure from the lower surface to the upper surface of the gravel. Since the rammer surface corresponds to the hole shape of the test hole, the backfilled gravel does not have rolling unevenness, and the vibration pressure is transmitted over the whole to be firmly rolled. After rolling for the required time,
Reverse the vertical movement means to raise the rammer to the ground,
Filling a suitable amount of soil and gravel in the test hole, lowering the rammer again and compacting it, and backfilling it while repeating the filling of the gravel in the test hole and the downward compaction of the rammer. The compacted soil and gravel can be compacted evenly and densely, and it is easy to descend into the test hole in the rammer part and to ascend after compacting the gravel surface without any trouble.

Further, since a plurality of rolling elements are provided on the machine frame so as to be movable, an operator can push and pull or move while supporting the machine frame on the rolling elements.

[0013] Further, the machine frame includes a machine base and a support,
The machine frame is provided with at least two rolling elements and legs are provided so as to form a three-point support together with the two rolling elements. The rammer part is hung on the support column while being placed, and can be moved up and down stably.

The machine base is formed in a substantially U-shaped frame or an annular shape, and the rammer surface of the rammer portion is provided so as to be able to move up and down with respect to the inside of the U-shaped frame or the annular shape. By simply arranging the test hole below the machine base, the rammer portion can be accurately placed in the test hole so as to be able to descend.

Further, since the vertically moving means is a chain block, the lowering and hoisting of the rammer portion can be performed promptly without any labor.

The machine frame can be selectively provided with a three-point support state by the rolling elements and legs, and a two-point support state by only the rolling elements by lifting and lifting the legs. Since the handle is rotatably attached, a narrow road or sidewalk can be smoothly moved by the two-point support by the rolling elements while holding the handle from the three-point support state.

[0017]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1, 2 and 3 show a local compaction device 10 according to an embodiment of the present invention. As is clear from the drawing, the local compaction device 10 includes a machine frame 12, a desired rammer surface 14 supported by the machine frame 12 and corresponding to the shape of the backfill hole, and has a vibration generating mechanism 16. It has a rammer section 18.

As a result, the machine frame 12 is mounted on a vehicle or the like and transported to the site, and the rammer portion 18 can be positioned in the inspection hole while being arranged at the upper position of the inspection hole. The rammer section 18 is attached to the machine frame 12 so as to be vertically movable by vertical movement means 22. Thereby, the machine frame 12 is arranged at the upper surface position of the test hole, the rolling operation by lowering the rammer portion 18 into the test hole by the vertical movement means 22 and the excavation soil after raising the rammer portion 18 from the hole. Rolling in the excavation hole can be performed promptly and efficiently while repeating backfilling of gravel and the like. In the embodiment, the rolling element 2 is attached to the machine frame 12.
0 is provided. The rolling element 20 can move the machine frame 12 without requiring any labor. The rolling elements 20 are composed of wheels, casters, crawlers, and the like, and can position the runner section 18 while easily moving at the work site.

The machine frame 12 includes a machine stand 24 and the machine stand 24.
And an upright column 26. As shown in FIGS. 1 and 3, the machine base 24 is a rectangular cylindrical frame member having an opening 28 at one end, and a central frame 30 facing the opening 28.
And the side frames 32, 32 provided at both ends of the central frame 30 to form a substantially U-shaped frame. A column 26 made of the same frame member is erected and fixed approximately at the center of the upper surface of the central frame 30. These frame members are not limited to the rectangular tube shape, and may use an angle steel, a channel steel, an H-shaped steel, or the like.

The machine base 24 is provided with rolling elements 20 and 20 comprising at least two wheels.
A leg 34 is provided so that the three rolling elements 20 and 20 can form a three-point support. Thus, the user can easily move the vehicle manually by lifting the leg 34 side like a two-wheeled vehicle for transporting soil or the like. The number of the legs 34 is not limited to one, and two or more legs 34 may be provided. A column 26 is provided upright on the machine base 24, and the column 26 is moved up and down while suspending and supporting the tip of the column. Further, by merely arranging the machine base 24 so that the test hole is located below the machine base 24, the lower surface of the rammer portion 18 is opposed to the inside of the test hole, and the lower portion of the rammer portion 18 lowers the rammer portion. The surface 14 comes into contact with the backfilled gravel and can be immediately compacted.

As shown in FIG. 3, in order to mount the rolling elements 20, 20 composed of the two wheels on the machine base 24, the machine base 2 is used.
On the outer side of the side frames 32, 32, auxiliary frames 36, 36 bent in an L-shape are provided side by side.
6 and 36 and the side frames 32 and 32,
0, 20 are inserted, and the rolling elements 2 are inserted into shaft holes provided at positions near the ends of the auxiliary frames 36, 36 and the side frames 32, 32.
Support shafts 38, 38, around which 0, 20 are rotatably suspended, are fixed through. Thus, the rolling elements 20, 20 can be easily moved by idling the rolling elements 20, 20 on the support shafts 38, 38 while supporting the load of the machine base 24 with the rolling elements 20, 20.

As shown in FIGS. 2 and 3, a mounting plate 40 for each rolling element 20 is fixed to a continuous portion of the auxiliary frames 36, 36 with the side frames 32, 32. A brake plate 42 with a handle for applying braking by sliding on the rolling element 20 is pivotally attached to the plate 40. During the rolling operation, the brakes 42 with the handle are brought into contact with the rolling elements 20 and 20 to apply braking, so that the moving frame 12 does not move during the operation and a stable operation can be performed.

As shown in FIGS. 1 and 2, the leg portion 34 is fixedly connected to a lower surface of an end portion of an arm frame 44 projecting in an inverted T shape on the outer surface side of the center frame 30 of the machine base 24. I have. This leg 3
4 and two rolling elements 20, 20 can support the machine stand 24 at three points.

A column reinforcing frame 46 is provided continuously on the upper surface of the end of the arm frame 44 and on the outer surface of the upper end of the column 26. On the opposite side of the supporting column auxiliary frame 46, the upper end of the supporting column 26 is provided with the vertical moving means 22.
Is protruding. Further, on the upper surface of the side frames 32, 32 of the machine base 24, a base plate 50 on which the rammer portion 18 is mounted when the moving frame 12 is moved is detachably mounted. The rods 52, 52 are fixed. Both ends of the base plate 50 are mounted on the receiving rods 52, 52, and the base plate 5
The moving frame 12 is moved while supporting the rammer section 18 on the upper surface of the moving frame 12. The rammer section 18 mounted on the base plate 50 may be moved by a truck or the like, or may be packed in the machine base 24 using another packing string or the like so as to be stably held when moving at the site. . It should be noted that the machine base 24 is not necessarily limited to being formed in a substantially U-shaped frame shape.
It is also possible to form a quadrangle, a polygon or the like into an annular shape having a hollow portion inside, and to move the rammer portion 18 up and down in this annular shape.

As shown in FIGS. 1 and 2, the rammer section 18
The upper and lower ends are formed in a closed hollow cylindrical body 54, the lower surface of which is provided with a rammer surface 14 having an area corresponding to the plane area of the excavation hole, and a vibration generating mechanism 16 is installed inside. The vibration generating mechanism 16 includes a motor (not shown) that is rotated by a high-frequency power supply, an eccentric weight fixed to a rotating shaft of the motor, and the like. A cable 56 connected to supply the high-frequency power to the motor is a hollow cylinder. Body 54
The cable 56 is provided with a motor control switch 60.

At a substantially central position of the upper surface plate 56, a hanging member 62 for hanging the vertical moving means 22 is fixed. When the cable 56 is connected to a high-frequency power source, the control switch 60 is closed, and the motor of the vibration generating mechanism 16 is driven to rotate at a high speed, the rammer section 18 vibrates at a high speed, and the lower rammer surface 14 is in contact. The contact surface is locally compacted while vibrating at a high speed. The rammer section 18 has a structure in which the vibration generating mechanism 16 is shielded in the hollow cylindrical body 54. However, the present invention is not limited to this. For example, a structure of a square cylindrical body or a polygonal cylindrical body corresponding to an excavation hole may be used. The vibration generating mechanism 1 may be formed on the upper surface of a circular, square, or polygonal rammer plate.
6 and a simple structure in which a suspension frame is continuously connected upward from the rammer plate and suspended by the vertically moving means 22.

As shown in FIGS. 1 and 2, upper and lower surfaces of an inverted L-shape are formed at the upper end of the support column 26 so as to protrude horizontally to an upper position on the inner side of the machine base 24, and near the end of the suspension frame 48. , An upper suspension element 64 and a lower suspension element 66 are fixed. The vertical moving means 22 is hung on the lower hanging member 66, and the rammer section 18 is detachably hung on the vertical moving means 22.

In the embodiment, an electric chain block 68 is provided as the vertical moving means 22, and a hook 70 fixed to the upper surface of the electric chain block 68 is provided.
Is attached to a lower suspending device 66 on the lower surface of the suspending frame 48, and is attached to a hook 74 fixed to a lower end of a load chain 72 suspended from the electric chain block 68.
Is detachably suspended. The vertical movement means 22 is not limited to the electric chain block 68 but may be a manually operated chain block 68 or a small winch.

A control unit 76 connected to the motor of the electric chain block 68 is fixed to the side of the connecting portion between the support 26 and the suspension frame 48. A power line 78 extends from the control unit 76. Have been. The control unit 76 is provided with an operation switch 80 for lowering or winding up the load chain 72 while rotating the motor of the electric chain block 68 forward or backward.

As a result, the machine frame 12 is moved to the position of the test drilling hole so that the inside of the machine stand 24 faces the test drilling hole. In this state, the power supply line 78 of the electric chain block 68 is connected to the regular power supply, The cable 56 is connected to a high-frequency power source which converts a normal power source or adjusts power generation by an engine generator or the like. After that, the base plate 5 on which the
0 is removed and suspended from the electric chain block 68. Then, gravel is back-filled to a depth of, for example, about 30 cm in the test hole, and the load chain 72 of the electric chain block 68 is returned.
After the ramming surface lands, the vibration generating mechanism 16 of the ramming part 18 is driven to compact the backfilled gravel. After that, the rammer portion 18 is wound up, and the work for backfilling in the test hole can be performed promptly and precisely while backfilling the gravel again. When the surface layer such as the ground is rolled, the upper and lower means
Alternatively, a rolling section may be provided on the upper surface of the rammer section 18 to provide a continuous portion such as a handle, and the rolling can be performed while manually operating the handle in a connected state.

As shown in FIGS. 1 and 2, the machine frame 12 has a three-point support state by the rolling elements 20 and the legs 34, and the legs 34 are lifted and floated so that only the rolling elements 20 are used. In order to selectively take the two-point support state, the central portion of the handle 82 formed in an inverted U shape at a position near the upper end of the outer surface of the support column reinforcement frame 26 is horizontally locked, and further the support column reinforcement frame is provided. It may be rotatably mounted so that it can fall down along 26. Thus, the operator can hold the handle 82 locked in the horizontal direction and move while supporting the machine frame 12 at two points with the rolling elements 20 and 20 while pushing or pulling the machine frame 12. In the working position, the handle 82 can be lowered, and the work can be continued while the moving frame 12 is stably supported at three points by the two rolling elements 20, 20 and the leg 34.

Next, the operation of the local compaction device 10 according to the present invention will be described. When the local compaction device 10 is loaded on a carrier such as a work truck and conveyed to the site, and is lowered from the carrier to the ground or loaded on the carrier after the work is completed, the suspension frame 48 connected to the support 26 is used. Upper suspension 64 on the upper surface side
The hook of the truck crane installed on the work truck is engaged and loaded. Then, the machine frame 12 is conveyed to an upper position of a test hole drilled at the side of a road or a sidewalk, and the machine frame 12 is installed. When a rolling element 20 such as a wheel is provided,
The handle 82 attached to the column auxiliary frame 46 is horizontally locked, and the handle 82 is gripped by an operator to move the moving frame 12.
To the position of the test hole by pushing or towing.

As shown in FIG. 4, the moving frame 12 is positioned such that the test hole 84 is located below the machine base 24 at the position of the test hole 84.
Adjust the stop position of the two rolling elements 20, 20 and the leg 3
The braking plates 42 with a handle are joined to the rolling elements 20 in a state of being supported at three points 4 and 4 to apply braking, and the handle 8
2 is laid down. In this state, the power supply line 78 of the electric chain block 68 is connected to a normal power supply, and the
Cable 56 is connected to a high frequency power supply. After that, the string packing the rammer section 18 on the upper surface of the machine stand 24 is released,
Further, the base plate 50 is removed and the rammer section 18 is hung on the load chain 72 of the electric chain block 68. At this time, the lower surface 14 of the lower surface of the rammer portion 18 is located above the test hole 84.

Therefore, excavated soil or gravel 86 is placed in a test hole 84 excavated to a depth of about 1.5 m by 30 cm.
At the same time, the operation chain 80 of the control unit 76 on the upper end side of the column 26 is lowered from the neutral state to the lowering side to drive the electric chain block 68 and load the chain 7.
2, the operation switch 80 is returned to the neutral state after the rammer surface 14 lands, and the electric chain block 68 is stopped. Next, the vibration generating mechanism 16 in the
Is closed by closing the control switch 60 of the cable 56 connected thereto, and driving the vibration generating mechanism 16 to compress the gravel 86 at high speed while transmitting vibration from the upper surface. After rolling for several minutes, the control switch 60 is opened to stop the vibration generating mechanism 16, and at the same time, the operation switch 80 reversely operates the electric chain block 68 to wind up the rammer section 18 to the ground and stop. The backfilling of the grammer is alternately repeated between the rolling down of the rammer portion 18 and the backfilling of the gravel. The inside is completely backfilled with gravel and compacted to finish the work.

Accordingly, the gravel and the like backfilled in the test hole can be uniformly and densely compacted, and the lowering of the rammer portion into the test hole can be performed.
The ascent after the gravel surface is compacted is automated, eliminating the need for time and effort.In addition, the moving frame can be easily moved to the test hole even in a narrow place, and the compacting work can be performed quickly while accurately positioning the rammer. In addition, there is no dent due to erosion after backfilling, and efficient local work can be performed. The present invention can be easily used not only for various investigation holes drilled underground, but also for rolling work such as backfilling of a pillar hole or a small diameter recessed hole, or any other local backfilling.

[0036]

As described above, according to the local compaction device according to the first aspect, the machine frame and the desired rammer surface supported by the machine frame and corresponding to the shape of the backfill hole are provided. ,
A rammer section having a vibration generating mechanism, and the rammer section is attached to the machine frame so as to be able to move up and down by means of up and down movement, so that it can be easily moved to a backfilling position such as a drilling hole. While inserting the rammer mounted on the moving frame into the test drilling hole, the backfilled soil and gravel can be compacted evenly and densely, descending into the test drilling hole of the rammer, rising after rolling the gravel surface, etc. It is possible to backfill test holes and various kinds of holes without any trouble, and to quickly perform compaction.

According to the second aspect of the present invention, the rolling element is provided on the machine frame so as to be movable, so that the operator manually pushes or supports the machine frame while supporting the machine frame on the rolling element. You can tow and move.

According to a third aspect of the present invention, the machine frame comprises a machine base and a support, and the machine base is provided with at least two rolling elements, and supports three points together with the two rolling elements. By being provided with legs so that it can be configured,
It is easy to move the device by lifting and lowering the leg side or to perform compaction work, and to position the compaction point manually at the local compaction point. Can be performed.

According to the fourth aspect, the machine base is formed in a substantially U-shaped frame or an annular shape, and the rammer surface of the rammer portion can move up and down with respect to the inside of the U-shaped frame or the annular shape. By simply arranging the test drilling hole below the machine base, the rammer portion can be accurately lowered into the test drilling hole and compaction of backfill soil or the like can be performed. Then, the device may be set so as to locate the rolling portion inside the U-shaped frame or the annular frame as a guide, so that the positioning of the device is extremely simple and the work can be performed quickly.

According to the fifth aspect of the present invention, since the up-and-down moving means is a chain block, the lowering and hoisting of the rammer can be performed promptly without requiring the labor of the operator.

According to the sixth aspect, the machine casing includes:
A handle is rotatably mounted so that a three-point supporting state by the rolling elements and the legs and a two-point supporting state by only the rolling elements by lifting the legs and floating can be selectively obtained. Thereby, it is possible to smoothly move on narrow roads and sidewalks with the two-point support by the rolling elements while holding the handle from the three-point support state. In addition, the operation of shifting the apparatus to the set state or the housed state in the rolled state can be easily performed, and since the apparatus can be folded, the storage and transport properties are extremely good.

[Brief description of the drawings]

FIG. 1 is a perspective view of a local compaction device according to an embodiment of the present invention.

FIG. 2 is a right side view of the local compaction device shown in FIG.

FIG. 3 is a plan view of the local compaction device.

FIG. 4 is an explanatory diagram showing a compaction operation in an excavation hole by a local compaction device.

FIG. 5 is an explanatory diagram showing a conventional rolling operation in a drilled hole by a push rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Local compaction device 12 Machine frame 14 Rammer surface 16 Vibration generating mechanism 18 Ramma unit 20 Rolling element 22 Vertical means 24 Machine stand 26 Support column 34 Leg part 68 Chain block 82 Handle

Claims (6)

(57) [Claims] 1. A machine frame, comprising: a machine frame supported by the machine frame, provided with a desired rammer surface corresponding to the shape of the backfill hole, and having a vibration generating mechanism. A local compaction device which is attached to a machine frame so that it can move up and down by means of up and down movement. 2. The local compaction device according to claim 2, wherein a rolling element is provided on the machine frame and is movable. 3. The machine frame is composed of a machine base and a support, and the machine base is provided with at least two rolling elements, and has leg portions so as to form a three-point support together with the two rolling elements. The local compaction device according to claim 1 or 2, further comprising: 4. The machine frame is formed in a substantially U-shaped frame or an annular shape, and a rammer surface of the rammer portion is provided so as to be able to move up and down with respect to the inside of the U-shaped frame or the annular shape. 4. The local compaction device according to any one of 1 to 3. 5. The local compaction device according to claim 1, wherein said vertical movement means is a chain block. 6. The machine frame can selectively select between a three-point support state by the rolling elements and legs, and a two-point support state by only the rolling elements by lifting and lifting the leg side.
The local compaction device according to any one of claims 1 to 5, wherein the handle is rotatably mounted.