JPH0643226Y2 - Clamp attachment for pile punching machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to various piles with a clamp for fixing a pile punching / pulling machine for driving or pulling out various piles into the ground. The present invention relates to a clamp attachment for a pile punching machine that is compatible with each other.

(Prior art) When carrying out river bank protection works and civil engineering works such as bridges or earth retaining works, various piles are used to stop the river, change the flow path, or transport materials. Place continuously.

For example, as shown in FIGS. 8 (a) and 8 (b), the pile includes a steel pipe pile P1, a U-shaped steel sheet pile P2, an H-shaped steel sheet pile P3, and the like. The same piles are not used for all of the same construction, but various piles are appropriately used depending on the flow velocity, water depth, hardness of the ground, or other work site conditions.

That is, as shown in Fig. 8 (a) and (b), steel pipe piles
P1 and U-shaped steel sheet pile P2 are combined, or as shown in FIG. 8 (c), steel pipe pile P1 and H-shaped steel P3 are combined, or steel pipe pile P1 and U-shaped steel sheet pile P2 and H-shaped It combines all of steel P3.

On the other hand, in the pile punching machine for driving these piles, as shown in FIG. 3, the mast 4 is erected on the upper surface of the slide base 3 that slides in the horizontal direction with respect to the base 2, and the pile P is removed. A holding chuck device 5 is slidably attached to the mast 4 in a vertical direction. Then, the pile P is driven into the ground while being held by the chuck device 5 at an appropriate position and lowered. While repeating this work, the piles are pressed in continuously.

In this case, the pile punching / pulling machine is fixed on the existing pile P by the clamp 6 below the base 2, and the clamp 6 obtains a reaction force at the time of driving the pile.

(Problems to be solved by the invention) Since the piles are driven one by one as described above, if the types of piles change during the continuous driving of the piles, the pile driving should be done accordingly. I have to change the drawing machine. this is,
This is because if the clamp of the pile punching and pulling machine is for holding steel pipe piles, the clamp cannot hold U-shaped steel sheet pile or H-shaped steel. Also, because of the structure of the pile punching machine, it is not possible to replace only the clamp, so the pile punching machine itself had to be replaced.

Since the pile puncher is a heavy object, it must be replaced using a crane, etc. This replacement work is complicated and time-consuming, and the use of a crane etc. increases the construction cost. was there.

Therefore, an object of the present invention is to provide a clamp attachment for a pile punching / pulling machine, which can quickly and surely hold various piles without replacing the pile punching / pulling machine itself.

(Means for Solving the Problems) In order to achieve the above object, the clamp attachment of the present invention is a steel pipe pile holding portion held by a clamp for an existing steel pipe pile formed at the lower end of the pile punching machine. Is formed above, and an upper part of an existing steel sheet pile is attached below the holding portion for the steel pipe pile to integrally form a sub-clamp for steel sheet pile which holds the steel sheet pile.

(Operation) When the above attachment is not used, the pile fitted to the clamp can be held by the clamp provided in the pile punching machine itself. Further, when holding a pile that cannot be held by the clamp provided in the pile punching / pulling machine, the holding portion of the attachment is held by the clamp, and the pile is held by the auxiliary clamp of the attachment.

For example, when fixing a pile punching / pulling machine for U-shaped steel sheet piles on a steel pipe pile, the holding portion of the attachment for the steel pipe pile is held by a clamp of the pile punching / pulling machine, and the sub-clamp of the attachment is used for the steel pipe pile. To hold.

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

First, an outline of the pile press-fitting / pulling machine 1 will be described with reference to FIG. In the present embodiment, a static load type pile press-fitting / pulling machine 1 is used as the pile punching / pulling machine, but a vibro-type device or the like can also be used.

A slide base 3 is provided on the upper surface of the base 2 so as to be slidable in the horizontal direction (horizontal direction in FIG. 3) with respect to the base 2, and a mast 4 is erected on the slide base 3. A chuck device 5 slidable in the vertical direction with respect to the mast 4 is attached to the front surface of the mast 4. Further, an appropriate number of clamps 6 are provided on the lower surface of the base 2, and the existing piles P are held by the clamps 6 to install the pile press-fitting / extracting machine 1 on the piles P. In FIG. 3, the existing pile P is the steel pipe pile P1, and therefore the attachment 7a is attached to the clamp 6.
It shows the case of holding.

Next, a mode of the clamp attachment will be described with reference to FIGS. 1 and 2.

The attachment 7a shown in FIG. 1 is used when fixing the pile press-fitting / pulling machine 1 for the U-shaped steel sheet pile P2 onto the steel pipe pile P1. The pile press-in / pull-out machine 1 itself is provided with a clamp 6 for holding the U-shaped steel sheet pile P2. A holding portion 8a made of a plate material having a thickness substantially equal to that of the U-shaped steel sheet pile P2 is provided on the upper portion of the attachment 7a so that the clamp 6 can hold it, and a sub-clamp 9a for holding the steel pipe pile P1 is provided below the holding portion 8a. Is provided.

This sub-crank 9a comprises a steel pipe pile gripping device shown in FIGS. 6 (a) and 6 (b), and a cylindrical pressing member having an outer diameter smaller than the inner diameter of the steel pipe pile P1 is divided into two parts, each of which is movable. It is configured as a member 9b and a fixed member 9c. These movable members
A pair of upper and lower cylinder accommodating holes 9d are formed in the opposing surfaces of the fixing member 9c and the fixing member 9c at appropriate depths, and the cylinders 9e are slidably accommodated in the respective cylinder accommodating holes 9d.

The attachment 7b shown in FIG. 2 is used when fixing the pile press-fitting / pulling machine 1 for steel pipe piles onto the U-shaped steel sheet pile P2. A clamp 6 for fixing to the steel pipe pile P1 is attached to the pile press-fitting / extracting machine 1 for steel pipe piles. This clamp 6 is the same as that of the steel pipe pile shown in FIGS. 6 (a) and 6 (b). Because of the gripping mechanism, this clamp has U-shaped steel sheet pile P2 and H-shaped steel sheet pile.
It cannot be fixed on P3.

Therefore, the steel pipe pile press-fitting / pulling machine 1 is fixed to the U-shaped steel sheet pile P2 and the H-shaped steel sheet pile P3 by using the attachment 7b. This sub clamp 9f has the same shape as the clamp of a conventional pile punching and drawing machine for U-shaped steel sheet piles, and has a steel pipe pile P1 and a holding portion 8b whose inner and outer diameters are equal to each other at the upper portion. A gap G that is appropriately wider than the wall thickness of the U-shaped steel sheet pile P2 is formed, and a fixed claw 9g and a movable claw 9h configured at the tip of the fluid pressure cylinder are internally provided. The movable claw 9h is advanced by the cylinder and fixed claw 9g. Hold the stake with and.

Next, the chuck device 5 will be described with reference to FIGS. 7 (a) and 7 (b).

The chuck device 5 for the steel pipe pile P1 has a substantially cylindrical shape,
An appropriate number of chucks 5b that can be advanced and retracted in the radial direction by pistons 5c are provided on the inner peripheral surface of the tubular portion 5a into which the steel pipe pile P1 can be inserted. The piston 5c is actuated by the cylinder, the chuck 5b is projected, and the steel pipe pile P1 is held from four directions. In such a chuck device 5 for a steel pipe pile, since it is not possible to hold U-shaped steel sheet pile P2, H-shaped steel P3, etc., the chuck device as shown in FIGS. 7 (a) and 7 (b) Use attachments for.

FIG. 7 (a) shows an attachment 10 for a U-shaped steel sheet pile P2.

As described above, the chuck device 5 is provided with four chucks 5b capable of moving forward and backward in the radial direction on the inner peripheral surface of the tubular portion 5a, and the steel pipe pile P1 projects the chucks 5b from the inner peripheral surface in four directions. Hold from. Attachment 10 for U-shaped steel sheet pile is a steel pipe pile
An insertion hole 12 is formed in a shape substantially similar to the cross-sectional shape of the U-shaped steel sheet pile P2 so that the U-shaped steel sheet pile P2 can be inserted into the holder 11 having a diameter substantially equal to P1. A cylinder 13 is formed inside the holder 11, and a piston 14 slides in the cylinder 13. If the tip of this piston 14 projects into the insertion hole 12,
The U-shaped steel sheet pile P2 existing in the insertion hole 12 is held between the tip surface of the piston 14 and the wall surface of the insertion hole 12.

FIG. 7 (b) shows an attachment 20 for H-section steel P3, and an insertion hole in the holder 21 having a shape similar to the cross-sectional shape of the H-section steel P3.
22 is formed. A cylinder 23 is formed in the holder 21, and a piston 24 slides in the cylinder 23. The tip of this piston 24 projects into the insertion hole 22,
It holds the H-section steel P3 at its tip.

The operation of this embodiment configured as described above will be described below.

When the steel pipe pile P1 is press-fitted into the ground by the pile press-fitting / extracting machine for the steel pipe pile P1, and the existing pile is the U-shaped steel sheet pile P2,
As shown in FIG. 4, neither the U-shaped steel sheet pile attachment 10 nor the H-shaped steel sheet pile attachment 20 is attached to the chuck device 5, and the steel pipe pile P1 is directly inserted into the chuck device 5.

On the other hand, the clamp 7 is attached with the attachment 7b shown in FIG. This is because the clamp 6 is inserted into the holding portion 8b of the attachment 7b as shown in FIG. 6 (a), and the cylinder between the movable member 9b and the fixed member 9c is shown as shown in FIG. 6 (b). These movable members 9b and fixed members are operated by operating 9e.
Attachment by crimping 9c to the inner wall surface of pile P1
Hold 7b.

Then, the gap G of the auxiliary clamp 9f of the attachment 7b
The upper end of the U-shaped steel sheet pile P2 is inserted into and the piston incorporated in the auxiliary clamp 9f is operated to hold the U-shaped steel sheet pile P2.

Then, the chuck device 5 is lowered. As a result, the lower end of the steel pipe pile P1 is driven into the ground. Chuck device 5
When is moved to the lower end of the mast 4, the steel pipe pile P1 is released from the chuck device 5 to raise only the chuck device 5, and the steel pipe pile P1 is again clamped and lowered to press the steel pipe pile P1.
By repeating this operation, the steel pipe pile P1 is press-fitted to a predetermined depth.

As shown in Fig. 3, a pile press-fitting / extracting machine 1 for U-shaped steel sheet pile P2
To secure the steel pipe pile P1 to the steel pipe pile P1, the clamp 6 is attached with the attachment 7a shown in FIG. In this case, after holding the holding portion 8a of the attachment 7a with the clamp 6 and inserting the auxiliary clamp 9a into the steel pipe pile P1, the movable member 9b and the fixed member are fixed.
Push out 9c and hold steel pipe pile P1. Then, similarly to the above, the U-shaped steel sheet pile P2 is driven.

By repeating this operation, the U-shaped steel sheet pile P2 is pressed into the ground. Further, the pulling-out work is performed in the reverse order of the press-fitting work.

Moreover, as shown in FIG. 5, a pile press-fitting / extracting machine 1 for steel pipe piles.
When driving P3 for H-section steel at, the existing pile is steel pipe pile P1.
In the case of, the H-shaped steel attachment 20 is attached to the chuck device 5 and pile driving is performed.

Although the piles P1 to P3 are press-fitted in this way, when press-fitting a pile having a different shape during press-fitting, the auxiliary clamps 9a and 9f are attached to or removed from the clamp 6 as necessary, and The attachment 10 for the steel sheet pile and the attachment 20 for the H-shaped steel are attached to the chuck device 5 while press-fitting and advancing. Therefore, various steel piles can be continuously press-fitted quickly and easily.

In the above, the clamp attachments for the steel pipe pile P1 and the U-shaped steel sheet pile P2 and the H-shaped steel P3 have been described, but by changing the shape of the auxiliary clamp for the holding portion,
It can be a clamp attachment for other shapes of pile.

(Effects of the Invention) As described above, according to the present invention, the pile punching and pulling machine can be held on the pile other than the pile that can originally hold the pile punching and pulling machine only by exchanging the attachment. You can

Since the replacement work of the attachment can be performed more easily than the replacement work of the pile punching machine itself, the working time can be shortened and the construction cost can be reduced. In addition, since piles can be easily placed and pulled out while appropriately replacing steel pipe piles, U-shaped steel sheet piles, H-shaped steels, etc., it is possible to select the piles suitable for the work site as appropriate, thus improving the safety of the work place. There is an effect that it can be sufficiently secured.

[Brief description of drawings]

1 and 2 are perspective views of a clamp attachment of a pile punching machine, FIG. 3 is a side view of a pile punching machine for U-shaped steel sheet pile fixed to a steel pipe pile, and FIG. 4 is a U-shaped steel. A side view of a pile punching machine for steel pipe piles fixed to a sheet pile, Fig. 5 is a side view of a pile punching machine for steel pipe piles fixed to a steel pipe pile, and Fig. 6 (a).
And FIG. 6 (b) is a front sectional view of a gripping mechanism for a steel pipe pile for holding a steel pipe pile, FIGS. 7 (a) and 7 (b) are plan views of an attachment for a chuck device, and FIG. It is a top view of the state which piled up continuously. 1 …… Pile punching machine, 5 …… Chuck device 6 …… Clamps 7a, 7b …… Attachments 9a, 9f …… Secondary clamps 10 …… U-shaped steel sheet pile attachment 20 …… H-shaped steel attachment

Claims (1)

[Scope of utility model registration request] 1. A steel pipe pile holding portion held by a clamp for an existing steel pipe pile formed at the lower end of the pile punching machine is formed above, and an upper portion of the existing steel sheet pile is below the steel pipe pile holding portion. An attachment for a clamp of a pile punching machine, which is integrally formed with a sub-clamp for a steel sheet pile that is attached and holds a steel sheet pile.