JPS6028970B2 - pile driving device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hydraulic pile driving device that eliminates vibration and noise during driving. It is something.

BACKGROUND ART Conventionally, in the work of driving and removing piles of sheet piles, concrete piles, etc., methods for driving piles using drop hammers, diesel hammers, reaction forces from driven piles, and other devices have been known.

Furthermore, these methods include hoisting the equipment with a tow truck or the like and grabbing the stake at the bottom of the equipment and driving it in, placing a turret and placing a weight on the top of the pile and driving it in, and adding a leader with one or more trays to the equipment. There is a method in which a pile is rotatably installed on the upper rotating body and lowered to soften the ground and allow the pile to be inserted. However, in all of these methods, the pile driving part is located at the top of the pile, so the stability of the equipment is poor, resulting in many accidents where the equipment rolls over, and workers working at the bottom of the pile may suffer accidents. there were.

Furthermore, in places where the height of overhead wires, overpasses, etc. is limited by 2 to 3 hours higher than the length of the driven piles, these operations are difficult and almost impossible.

Furthermore, many of the devices are large and even small devices require transporting machinery, making it difficult to work in narrow spaces.
Furthermore, since the distance from the gripping part of the pile to the driving point is long with these devices, if the driving force is large, the pile may break or bend, and the pile may become unstable during pile connection work, resulting in poor verticality. Phenomena such as loss of data occurred. Furthermore, construction methods that soften the ground can also cause problems such as ground subsidence.
Although some of these devices and construction methods are non-polluting,
Some caused secondary pollution. The present invention has been completed as a result of intensive research to eliminate these problems, expand the working range, ensure the safety of workers, and enable work to be carried out even in narrow spaces.

An embodiment of the invention will be described with reference to the drawings.

A guide member 42 in the left and right direction is provided on the chassis 41 of the self-propelled vehicle 1, and the frame 22 placed on the guide member 42 is moved left and right by a hydraulic cylinder 43. At the front of the frame 22, a front-rear movable table 3, which is moved in the front-back direction by a hydraulic cylinder 2, is attached.
A left and right movable base 5, which is moved in the left and right direction by a hydraulic cylinder 4, is mounted on the back and forth movable base 3, respectively.
A vertical column 6 and a hydraulic cylinder 7 are erected on the left and right movable table 5, and a guide rod 8 that can move up and down along the vertical column 6 is attached. A front-projecting lifting box 9 that is raised and lowered at 7 is attached. Further, a rotary seat 12 is fixed to the lower surface of the front and rear extending lifting box 9, and an annular groove is provided in the inner circumferential wall of the vertical circular hole of the rotary seat 12. The upper end flange of a rotating tube 13 inserted into and hanging down from the rotating seat 12 is rotatably placed in the annular groove of the rotating seat 12, and the rotating tube 13 extends below the rotating seat 12. An annular gear 10 is provided around the upper end flange of the rotating cylinder 13.
A gear 40 supported on the lower surface side of the front extending elevator box 9 engages with an annular gear 1, and a hydraulic motor 11 fixed to the lower surface side of the front extending elevator box 36
00 can be rotated in forward and reverse directions. Furthermore, an arrow chucking mechanism ○ is attached to the lower part of the rotary cylinder 13. The vertical chucking mechanism D uses a hydraulic cylinder 17 whose base end is pivoted to a bracket 15 fixed to the main body 14, and a chucking arm 19 whose base end is supported to a bracket 16 fixed to the main body 14 via a clevis 18. By closing it, the sheet pile 20 can be sandwiched and fixed. Note that depending on the position of the sheet pile 20, the rotary tube 13 can be rotated to grip the sheet pile 20. A vertical weight plate 21 is installed and fixed on the upper surface of the front extending elevator box 9.

In addition, hydraulic cylinders 2 are provided on the left and right sides of the rear end of the frame 22.
Rear outriggers 25, 25 are attached to the front end of the frame 22, and outrigger stands 27, 27 are mounted on the front end of the frame 22. A slide head 28 is attached to a front outrigger 38 provided on the outrigger stands 27, 27 and is movable up and down by a hydraulic cylinder 29. The upper end of the hydraulic hoist 31 is slidably engaged and suspended via a pin 45 to an annular suspension guide member 44 formed of a T-shaped groove fixed to the lower surface of the front extending elevator box 9.
A hook 33 is attached to the rod end 32 of the hydraulic hoist 31, and two forks 34 are attached to the hook 33.
, 35 are connected by a hydraulic cylinder 36, and the lower parts are pivotally connected by a pin 37. A chuck device F is suspended, and grips the sheet pile 20 by opening and closing the forks 34, 35. be able to.

In the above configuration, the operation of pushing the sheet piles 20 will be explained.

First, the moving vehicle 1 is moved to the place where the sheet pile 20 is pushed, and at the same time, the hydraulic cylinder 23 of the rear outrigger 25 is extended to extend the slide head 24, and the hydraulic cylinder 26 is extended to move the front outrigger stand 27 to a predetermined position. The slide head 28 of the outrigger 38 is placed on the ground 39 by extending the hydraulic cylinder 29 to the position shown in FIG.

Next, the frame 22 is moved by the hydraulic cylinder 43, the back and forth moving table 3 is moved by the hydraulic cylinder 2, and the hydraulic cylinder 41
The iron left and right moving tables 5 are respectively moved to adjust the center of the rotary cylinder 13 to be at the position of the driving pile 20, and the hydraulic cylinder 7 is extended to raise the front extending elevator box 9. Next, the sheet pile 20 is inserted from above into the front extending lifting box 9 and the rotating cylinder 13 using a crane, and the hydraulic cylinder 1 of the arrow chucking mechanism D is raised with the hydraulic cylinder 7 raised.
7 to grip and fix the sheet pile 20. When the hydraulic cylinder 7 is contracted and the front-extending lifting box 9 is lowered, the two sheet piles are reduced by the hydraulic pressure of the hydraulic cylinder 7 and the weight of the plumb material 21, the front-extending lifting box 9, the rotating cylinder 13, etc. is added. When the contraction limit of the hydraulic cylinder 7 is reached, the arrow chucking mechanism ○ is loosened and the hydraulic cylinder 7 is extended again to raise the front elevating box 9. If the same operation as before is repeated, the sheet piles can be moved up to 2 rivers. It is gradually pressed into the ground 39. The pile press-in method described above is sufficient for normal pile press-in using its own weight, but when a larger force is required, a hydraulic hoist 31 is attached to the lower end of the hydraulic hoist 31 engaged with the suspension guide village 44 of the front-extending lifting box 9. However, by activating the hydraulic cylinder 36 of the chucking device F to grasp the sheet pile 20 that has already been press-fitted into the ground 39, the reaction force is added to the method described above and operated at the same time, thereby further increasing the pressing force. It will be done. In this case, the input value can be expressed as (self weight + reaction force from the embedded pile). next,
The work of pulling out the sheet piles 20 will be explained.

Simultaneously with the press-fitting work, the running wheel 1 is moved to the position where the sheet pile 20 is pulled out. If the ground 39 is level, rear outrigger 2
5 and the front outriggers 38 can be operated without being used. That is, the hydraulic cylinders 2, 4,
26 and 43 to position the two sheet piles against each other, contract the hydraulic cylinder 7, lower the front elevating box 9, grip the sheet pile 20 by the arrow chucking mechanism D, and extend the hydraulic cylinder 7. to raise the front elevating box 9. When the stroke of the hydraulic cylinder 7 reaches its upper limit, the hydraulic cylinder 17 is operated to open the vertical chucking mechanism D, and the hydraulic cylinder 7 is contracted again to lower the front extending elevator box 9. Thus, the sheet piles 20 can be pulled out by repeating this operation. In other words, extraction is possible using only the capacity of the hydraulic cylinder 7.
As explained above, the present invention provides a chassis 4 of a self-propelled vehicle 1.
A frame 22 that moves left and right is mounted on top of the frame 22, and a back-and-forth moving table 3 that moves in the left-right direction is mounted on the front part of the frame 22. 5 installed on the vertical column 6 erected on the left and right moving table.
A front extending lifting box 9 is mounted along the front extending box 9 and raised by a hydraulic cylinder 7, and a rotating seat 1 is attached to the lower surface of the front extending lifting box 9.
2 is fixed thereto, and an annular groove is provided in the inner circumferential wall of the vertical circular hole of the rotary seat 12.
The upper end flange of 3 is rotatably ironed into the annular groove of the rotating seat 12, and the rotating tube 13 is suspended below the rotating seat 12, and the upper end flange of the rotating tube 13 is fixed with iron. A gear 40 fixed to the output shaft of a hydraulic motor 11 attached to the lower surface of the front extending elevator box 9 is engaged with the annular gear 10, and a vertical chucking mechanism D is attached to the lower part of the rotary cylinder 13.
Furthermore, the plumbstone village 21 is layered and fixed on the front overhanging elevator box 9, and the upper end of the hydraulic hoist 31 can be slid onto the annular hanging guide member 44 fixed to the lower surface of the front overhanging elevator box 9. Since the engaging suspension support is constructed by suspending the chucking device F for the upper end of the sheet piles from the lower end of the hydraulic hoist 31, it is possible to easily level and stabilize the self-propelled vehicle 1, and also to prevent vertical chucking. Since the mechanism D can freely move forward and backward, left and right, and up and down, it can also rotate around a vertical line, so the sheet pile 2
0 connection work and multiple sheet piles 2 at the same location
0 can be driven and pulled out, and if there is a space equal to the length of the piles and sheet piles 20, the work can be performed.Furthermore, the arrow chucking mechanism D is located at the bottom of this device, and the piles,
Since the sheet piles 20 are held upright inside the front extending elevator box 9, there are many advantages such as there is no risk of overturning and the safety of workers can be sufficiently ensured. Note that when the self-propelled vehicle 1 drives the piles 20 one after another while moving laterally left and right, the hydraulic hoist 31 is moved along the annular hanging guide member 44 to grasp the inserted sheet pile.

It takes time and effort to move the target vehicle 1 in a direction perpendicular to the traveling direction of the self-propelled vehicle 1, that is, in a lateral direction.

However, in this invention, when the self-propelled vehicle 1, that is, the chassis 41 is stopped, the frame 2 is attached to the chassis 41.
The chassis 4
1, the front extending elevator box 9 can be largely displaced in the lateral direction. Therefore, when the piles are sequentially driven in or pulled out laterally to the self-propelled vehicle 1, there is no need to move the first vehicle 1 laterally each time. Therefore, work efficiency can be significantly improved. Similarly frame 2
In contrast to 2, by moving the front-rear movable platform in the front-rear direction using the hydraulic cylinder 2, it is possible to move the forward-extending lifting box 9 in the front-rear direction relative to the self-propelled vehicle 1, thereby improving work efficiency. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the entire device, and FIG. 2 is a plan view of the same, but the frame is shown in a transparent state. FIG. 3 is an enlarged front view of the same. FIG. 4 is a front view showing the movement of the vertical column from side to side, and FIG. 5 is a plan view showing the state when the rotary seat in FIG. 2 is rotated by 90 degrees. FIG. 6 is a plan view of the driving device, and FIG. 7 is a partially cutaway enlarged side view thereof. Figure 8 is the A inkstone drawing of Figure 1, and Figure 9 is the same B.
10 is a C sectional view of the same, FIG. 11 is a perspective view of the principle of the chassis, frame, front-rear moving platform, left-right moving platform, front extending elevator box, etc., as seen diagonally from above, and FIG. 12 is a chucking. FIG. 2 is a perspective view of the principle of the machine. 1...Match running car, 3
...... Front and back moving table, 5... Left and right moving table, 6.
...Vertical column, 7...Hydraulic cylinder, 9...
...・Front extending lifting box, 11...Hydraulic motor, 13
...Spread tube, 21...Plumb material, 31...
... Hydraulic hoist, 41 ... Chassis, 42 ... Left and right guide material provided on the chassis, 43 ... Hydraulic cylinder, 44 ... Annular hanging guide member, D ...
... Arrow chucking mechanism. Figure 3 Snake diagram N Ship Figure 4 Figure 5 ■ Ship Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] 1. A frame that moves left and right is installed on the chassis of a self-propelled vehicle, and a back-and-forth moving platform that moves in the front-rear direction is attached to the front of the frame, and a back-and-forth move platform that moves in the left-right direction is mounted on the front and rear moving platform. Attach a platform, attach a front-extending lifting box that goes up by a hydraulic cylinder along a vertical column erected on the left-right moving platform, fix a rotating seat to the lower surface of the front-extending lifting box, and fix the rotating seat vertically. An annular groove is provided in the inner circumferential wall of the circular hole, and the upper end flange of the rotary cylinder inserted into the rotary seat and hanging down is rotatably fitted into the annular groove of the rotary seat, and the rotary cylinder is suspended below the rotary seat. , the annular gear fitted and fixed around the upper end flange of the rotating tube is engaged with the gear fixed to the output shaft of the hydraulic motor attached to the bottom surface of the front extending lifting box, and the lower part of the rotating tube A vertical chucking mechanism is attached to the hoist, a weight is placed and fixed on the front-extended lifting box, and the upper end of the hydraulic hoist is slidably connected to the annular hanging guide member fixed to the bottom of the front-extended lifting box. A pile driving device consisting of a joint suspension support and a chucking device suspended from the lower end of a hydraulic hoist.