JPS6340889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for press-fitting or extracting piles without vibration or noise.

BACKGROUND ART Conventionally, in order to solve pollution problems such as vibration or noise, devices have been provided in which piles are press-fitted or pulled out using hydraulic pressure. However, with conventional equipment of this kind, each time the piles are pressed in or pulled out, a large crane truck must be used to move the entire equipment, which is extremely troublesome. Instead, it requires a large number of people. In addition, it was impossible to work in areas where the crane truck was subject to space and height restrictions.

Recently, in order to solve these problems, the first movable base is moved back and forth with respect to the base, and the second movable base, which is equipped with a chucking device for press-fitting and pulling out piles, is moved from the first movable base to the base. Move it left and right with respect to the movable table,
Pile press-in that allows you to move sequentially by yourself using piles that are being press-in or piles that have been press-fit,
An extraction device has been proposed.

However, in this pile press-in and pull-out device, a chucking device for pile press-in and pull-out is fixedly supported in a vertical direction with respect to a movable base. Therefore, for the pile normal,
It is not possible to correct a pile that is being press-fitted with an inclination to the left or right. Also, depending on the geology of the construction site, the pile press-in and settlement may stop due to the hardness of the ground before the pile is press-in and settle to the specified depth. It is necessary to take measures such as hitting the top of the pile.

The purpose of the present invention is to be able to press-fit or pull out piles without vibration or noise, and to be able to move sequentially by oneself using the piles that are being press-in or the piles that have been press-fitted. Press-fit piles freely and efficiently even in places with space and height restrictions.
Of course, it is possible to carry out extraction work,
It is possible to correct a pile that is being press-fitted in an inclined state to the left or right with respect to the pile normal, and even if the pile press-in or settlement stops due to the hardness of the ground, the consolidation state of the ground can be corrected. To provide a pile press-in and pull-out device that can reduce the amount of stress and smoothly press-in and sink a pile.

In order to achieve such an object, the present invention includes a base;
A first movable base supported so as to be movable in the front-rear direction with respect to the base, a device for moving this movable base, and a second movable base supported movably in the left-right direction with respect to the first movable base. A platform, a device for moving this movable platform, a hydraulic cylinder supported on the second movable platform so that it can be raised and lowered in the left and right directions with respect to the normal to the pile, and connected to the hydraulic cylinder so that it can be raised and lowered together with the hydraulic cylinder. a chucking device that is supported to move along the direction of expansion and contraction as the hydraulic cylinder expands and contracts, and that clamps the pile; and a chucking device that is supported on a base or movable platform and that clamps the pile that has already been press-fitted. It is characterized by being equipped with a force chucking device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. As shown in Figures 1 to 3, the base 1 has a notch 2 in the center of the front side so as to have a U-shape in plan.
is formed, and a plurality of outriggers 3 are attached to the front and rear of this base 1. A first movable table 4 is supported on the front side of the base 1 so as to be movable in the front-rear direction relative to the base 1. That is, protrusions 6 extending horizontally from both rear sides of the first movable base 4 are movably inserted into spaces 5 formed horizontally on both sides of the base 1. The base of a hydraulic cylinder 8 is connected to the back wall 7 of the cavity 5 of the base 1, and the piston rod 8a of the hydraulic cylinder 8 is connected to the protrusion 6 of the first movable base 4. Therefore, by expanding and contracting this hydraulic cylinder 8, the first movable table 4 can be moved forward or backward relative to the base 1 (the fourth
(See Figures B and D). On the front side of the first movable base 4, there is a second
A movable base 10 is supported so as to be movable in the left-right direction, that is, in a direction orthogonal to the direction in which the first movable base 4 moves forward and backward. The second movable base 10 has horizontal parts 12 integrally protruding from both left and right sides of the vertical part 11, and a protruding part 13 protruding from the top of the vertical part 11 is formed on the lower side of the first movable base 4. It is inserted into the groove 14 such that it can only slide.
A tube of a hydraulic cylinder 15 is fixed to the vertical part 11 of the second movable base 10 by an arm member 16, and piston rods 15a,
15a is fixed to the first movable base 4. Therefore, by moving the tube of the hydraulic cylinder 15, the second
The movable base 10 can be moved in the left-right direction with respect to the first movable base 4. (See Figures 4B and D).
Hydraulic cylinders 17 for press-fitting and pulling out piles are supported in the vertical direction on the horizontal portions 12 on both the left and right sides of the second movable base 10, respectively. The base of each hydraulic cylinder 17 is supported by a pin 18 so as to be able to rise and fall in the left and right directions with respect to the normal line of the pile to be driven. A connecting member 20 is connected to the tip of the piston rod 17a of each hydraulic cylinder 17 by a pin 20a in a direction perpendicular to the pin 18.
are designed to be able to slide relative to each other. That is,
A connecting member 20 is connected to the tip of the piston rod 17a to allow the hydraulic cylinder 17 to rise and fall. A chucking device 22 is connected between the lower ends of the hanging portions 21 of each of the connecting members 20, located below the horizontal portion 12 of the second movable base 10. That is, an upper ring body 23 is fixed between the lower ends of the hanging portions 21 of each connecting member 20, and a lower ring body 24 is rotatably connected to the upper ring body 23 by a holding ring body 25. Auxiliary plates 26 are arranged facing each other on the lower side of the lower ring body 24, and the bases of hydraulic cylinders 27 are fixed to each auxiliary plate 26.
A chuck member 28 is fixed to the piston rod 27a of No. 7. Each chuck member 28 has a number of engagement protrusions on opposing surfaces. Thus, each chuck member 28 can be opened and closed by expanding and contracting each hydraulic cylinder 27. Each of the hydraulic cylinders 17
The tube has a fixed guide 3 parallel to its axial direction.
0 is installed. In the illustrated example, a pair of fixed guides 30 are installed at the front and rear of the tube with a phase shift of approximately 180 degrees, and these fixed guides 30
A movable guide 31 fixed to the hanging portion 21 of the connecting member 20 is engaged with the movable guide 31 and supported so as to be slidable only. Therefore, the chucking device 22 is connected to the hydraulic cylinder 17 so that it can be raised and lowered, and is also movable along the direction of expansion and contraction of the hydraulic cylinder 17 as the hydraulic cylinder 17 expands and contracts. A chucking device 32 is provided on the front side of the base 1 to take the reaction force from the piles that have already been press-fitted. This chucking device 32 is connected to a support plate 3 supported on a base 1.
3 through the notch 2 of the base 1, and is rotatably supported by a support plate 33.

Next, the operation of the above embodiment will be explained. First, the device is placed at a predetermined position, the height of the outrigger 3 is adjusted to hold the device at a predetermined height, and the chucking device 22 is brought to face the site where the pile is to be press-fitted.
Next, a weight (not shown) is placed on the base 1 to take up the reaction force when the pile is press-fitted. Next, the pile P1 is suspended by a crane and the chucking device 22 is opened.
It is inserted between the chuck members 28 of and brought into contact with the ground. At this time, since the chucking device 22 is located at the lower part of the second movable base 10, the pile P1 can be passed between the connecting members 20 and 21 and inserted between the chuck members 28 without being lifted high. Next, the piston rod 17 of the hydraulic cylinder 17
a to raise the chucking device 22 and raise the piston rod 27 of the hydraulic cylinder 27.
a and the chuck member 28 holds the pile P1. Thereafter, the chucking device 22 is lowered by retracting the piston rod 17a of the hydraulic cylinder 17, so that the pile P1 can be forced into the ground by the stroke of the piston rod 17a. After press fitting, the piston rod 27a of the hydraulic cylinder 27 is retracted, the chuck member 28 is moved back, and the pile P1 is released. Subsequently, the piston rod 17a of the hydraulic cylinder 17 is extended, and by repeating the above operations in sequence, the first pile P1 can be press-fitted into the ground to a predetermined depth as shown in FIG. 4A.

After press-fitting the first pile P1, as shown in FIG. 4B, the piston rod 8a of the hydraulic cylinder 8 is extended to move the first movable base 4 and the second movable base 10 forward, and is moved to the left, and the second movable base 10 is moved to the left.
After the movement, the second pile P2 is oriented in the opposite direction to the first pile P1, and the second pile P2 is connected to the first pile P1, and it is partially underground in the same manner as the first pile P1. Press fit. When a certain amount of resistance is generated on the second pile P2, the weight is lowered and the chucking device 2
With the second pile P2 held between the second chuck member 28, the outrigger 3 is retracted, and the piston rod 8a of the hydraulic cylinder 8 is moved as shown in FIG. 4C.
is retracted to advance the base 1, and then the tube of the hydraulic cylinder 15 is moved to the right to move the first movable base 4 and the base 1 to the left. After moving, extend each outrigger 3 to support this device on the ground,
Continue press-fitting the second pile P2.

After press-fitting the second pile P2, as shown in FIG. is moved to the right, and the second movable base 10 is moved to the right.
After the movement, the third stake P3 is oriented in the opposite direction to the second stake P2, that is, the third stake P3 is oriented in the same direction as the first stake P1, and this third stake P3 is connected to the second stake P2. Connect it and press it halfway into the ground. When a certain amount of resistance is generated on the third stake P3, the weight is lowered and the chuck member 28 of the chuck device 22 is moved.
While holding the third pile P3, retract the outrigger 3, retract the piston rod 8a of the hydraulic cylinder 8, move the base 1 forward, and then move the tube of the hydraulic cylinder 15 to the left. The first movable table 4 and the base 1 are moved to the right. After the movement, each outrigger 3 is extended to support the device on the ground, and the reaction force chucking device 32 is used instead of a weight to move the first pile P.
1 and continue the press-fitting work of the third pile P3.

Thereafter, by repeating the same operations as described above, the piles can be successively press-fitted while the device moves forward by itself.

During this press-fitting work, as described above, the left and right hydraulic cylinders 17 are supported by the pins 18 so as to be able to rise and fall in the left-right direction with respect to the normal line of the pile to be press-fitted, and the connecting member 20 is connected to the piston rod 17a of each hydraulic cylinder 17. By selectively changing the strokes of the piston rods 17a of the left and right hydraulic cylinders 17, the hydraulic cylinders 17, connecting members 20, 21, and chucking device 26 can be moved together to either the left or right. Therefore, by synchronously expanding and contracting the piston rod 17a of the hydraulic cylinder 17 in this tilted state, the pile P that is being press-fitted in the tilted state can be corrected. Also, base 1
By adjusting the outriggers 3, even if the pile P is being press-fitted with an inclination in either the front or rear direction, this can be corrected. Also, depending on the geology of the construction site, if the piston rods 17a, 17a of the hydraulic cylinders 17, 17 are expanded and contracted synchronously, the press-in settlement of the pile P may be caused by the hardening of the ground before the pile P is press-fitted to a predetermined depth. In such a case, the piston rods 17a of the hydraulic cylinders 17 on both sides, 17, 17,
By alternately contracting or extending 17a, the hydraulic cylinder 17, the connecting members 20, 21, and the chucking device 22 can be tilted together alternately left and right, thereby intentionally imparting left-right movement to the pile P. This allows the consolidation state of the ground relative to the pile P to be reduced, and the pile P can be press-fitted and settled smoothly.

In addition, this device is not only used when press-fitting the pile P in a straight line, but also when changing the direction.
2 is configured to be rotatable relative to the connecting members 20 and 21, so it can be used as is.
In this case, for example, the stakes at the corner portions may be held by a chucking device, and the load of the device may be transferred to the stakes.

Further, by repeatedly performing the reverse operation to the above while moving the device backward, the piles can be successively pulled out.

Note that the outrigger 3 at the rear center of the base 1 may be provided with a reaction force chucking device on its lower side that can hold the pile that has already been press-fitted. Similar to the front side part, a movable base that can move in the front-rear direction and a movable base that can move in the left-right direction are sequentially supported, and a hydraulic cylinder is attached to the movable base that can move in the left-right direction so that it can expand and contract in the front-rear direction. The chucking device can be connected to this piston rod, and while the number of piles being press-fitted is small, the chucking device can be used as an outrigger supported against the ground, and as the number of piles being press-fitted is increased, the chucking device can be connected to the piston rod. This allows the pile to be held in place after press-fitting. In this case as well, outriggers may be separately attached to the left and right rear sides of the base 1. Further, until the pile can be held by this chucking device, an outrigger may be provided at the same position as or in front of the chucking device 22 for press-fitting and pulling out. In this case, the second movable base 10 It is convenient if another base is removably connected to the front side and an outrigger is attached to this base.

Further, a plurality of reaction force chucking devices may be provided in a row, and they may be supported not only on the base 1 but also on a movable table. Furthermore, this device is not limited to the method of supporting it on the ground, but can also be used for press-fitting of piles from the water by supporting the device on piles that have already been press-fitted. Furthermore, in each of the above embodiments, the piston rod 17 of the hydraulic cylinder 17
Although a points upward, it may be provided so as to point downward. Furthermore, the number of hydraulic cylinders 17 may be one. In addition to this, the present invention can be modified in various ways without departing from its basic technical idea.

As is clear from the above, according to the present invention, since the pile is press-fitted or pulled out by the expansion and contraction of the hydraulic cylinder, it is possible to prevent the generation of vibration and noise. In addition, it is possible to use the piles that are being press-fitted or the piles that have been press-fitted and move them one by one by yourself, so there is no need to move them using a crane, and you can move the piles freely and efficiently even in narrow spaces or places with height restrictions. Press-fitting and pulling-out operations can be performed, and labor can be saved. Furthermore, a first movable base is supported so as to be movable in the front and back directions with respect to the base, a second movable base is supported so as to be movable in the lateral direction with respect to the first movable base, and a second movable base is provided on the second movable base. Since the chucking device for press-fitting and pulling out the piles is connected to the hydraulic cylinder, the chucking device can be moved in a staggered manner, making it easy to align and center the piles. In addition, since the hydraulic cylinder and chucking device are raised and lowered together in the left and right directions relative to the normal line of the pile, it is possible to correct piles that are being press-fitted in an inclined state, and also to prevent piles from being press-fitted and sinking into the ground. Even if the system stops due to hardness, etc., it has the advantage of reducing the consolidation state of the ground and allowing the pile to be smoothly pressed in and settled.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the device of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a front view, and FIGS. 4 A to E are schematic diagrams for explaining the operation. FIG. DESCRIPTION OF SYMBOLS 1... Base, 3... Outrigger, 4... First movable base, 8... Hydraulic cylinder, 10... Second movable base, 1
5...Hydraulic cylinder, 17...Hydraulic cylinder, 20...
Connection member, 22...Chucking device, 27...Hydraulic cylinder, 28...Chuck member, 30...Fixed guide, 31...Movable guide, 32...Chucking device for reaction force.

Claims (1)

[Claims] 1. A base, a first movable base supported so as to be movable in the front and rear directions with respect to the base, a device for moving this movable base, and a first movable base supported so as to be movable in the left and right directions with respect to the first movable base. a second movable base, a device for moving this movable base, a hydraulic cylinder supported on the second movable base so that it can be raised and lowered in the left and right directions with respect to the normal line of the pile, and a hydraulic cylinder that can be raised and raised together with the hydraulic cylinder. It is connected so that it can be knocked down, and is supported so that it can move along the expansion and contraction direction as the hydraulic cylinder expands and contracts, and is supported by a chucking device that clamps the pile and a base or movable platform, and is already press-fitted. A pile press-fitting and pulling device characterized by being equipped with a reaction force chucking device that clamps a pile.