JPH06200526A - Clamp, chuck and attachment of pile press-in and pull-out machine - Google Patents

Abstract

PURPOSE:To provide a clamp of a pile press-in and pull-out machine for connecting a new pile to the head of the existing pile array and pressing the same in the ground while running on the pile placed in the ground, which can simultaneously clamp the flanges and grips of both sides of an H-steel pile without deformation. CONSTITUTION:A recess part 3 is formed on the lower side of a clamp main body 2, cavities 2a are provided in the longitudinal direction of the substantially central part of the inner surface opposite to the recess part 3, fixing clicks 4 are formed on both sides of one cavity 2a, hydraulic cylinders 5 are disposed on both sides of the other cavity 2a, and moving clicks 6 are connected to rods 5a of the hydraulic cylinders 5. An existing H-steel pile array 7 is inserted in the recess part 3, the hydraulic cylinders 5 are operated to clamp the flanges 7a of the H-steel pile 7 from both sides by the fixing click 4 and the moving click 6, and grips 7b, 7c are refuged to the cavities 2a, 2a. Accordingly, the H-steel pile can be clamped surely without breakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp, a chuck, and an attachment of a pile press-in / pull-out machine for connecting a new pile to the tip of the pile row and press-fitting it while traveling on the pile row pressed into the ground.

[0002]

2. Description of the Related Art A pile press-in / pull-out machine includes a clamp for sandwiching a pile press-fitted in the ground, a base on which the clamp is slidably attached to a row of piles, and a base for the base. And a chuck mounted on the front end of the mast so as to be vertically movable and rotatable. Generally, in order to clamp a pile in a clamp, a recess for inserting the pile is provided in the center of the lower part of the clamp body, and a fixing claw is formed on one inner surface of this recess and the other inner surface facing the fixing claw is formed. In addition, a movable claw that is attached by a hydraulic cylinder to be able to move back and forth is provided.

Further, since the chuck is loaded with piles inside, a U-shaped pile insert portion having a planar shape is formed from an upper portion to a lower portion, and a grip claw that can be advanced and retracted by a hydraulic cylinder is provided below the pile insert portion. There is. Further, the attachment is to be attached to the chuck in order to press the pile into the ground at a position where it cannot be grasped by the chuck, and is composed of a chuck attachment part and a pile grasping part, and the pile grasping claw is provided in the pile grasping part. .

[0004]

However, in the clamp, chuck and attachment of the conventional pile press-fitting / pulling machine, each part is constructed on the assumption that a general steel sheet pile having a U-shaped cross section is used. Therefore, it is not possible to support the pile press-in / pull-out machine by sandwiching the H-steel shaped pile pressed into the ground.
The chuck or attachment could not be loaded with new H steel profile piles.

The present invention has been made in view of the above circumstances, and is equipped with a clamp at the bottom of a pile press-in / pull-out machine to clamp a pile row of H steel shape piles connected and installed in the ground, and an existing clamp. A chuck that grips a new H-steel shape pile by pressing it into the ground by using the pile as a reaction force, and a chuck that is attached to this chuck to grip a new H-steel shape pile and cannot press-fit with a conventional chuck. The purpose is to provide an attachment that can be pressed into a location.

[0006]

A clamp for a pile press-fitting / extracting machine according to the present invention comprises a movable claw which can be extended and retracted and which is arranged inside or outside a grip of a connected H steel shaped pile. It is characterized in that it is composed of fixed claws or movable claws that can extend and retract with respect to each other.
The clamp of the pile press-fitting / extracting machine of the present invention comprises movable claws which are arranged inside or outside each web of the connected H-steel shaped piles and which can be extended and retracted, and fixed at positions opposed to the movable claws. It may be composed of a claw or a movable claw that can be extended and retracted. The chuck of the pile press-fitting / extracting machine of the present invention comprises a fixed pawl arranged on the outside of the flange or web of the H-steel shaped pile to be gripped, and a movable pawl that is extendable and retractable arranged at a position facing the fixed pawl. It is composed of and. Further, the attachment of the pile press-fitting / pulling machine of the present invention includes a plate insertable into a chuck of the pile press-fitting / pulling machine, a movable claw arranged to be extendable and retractable with respect to the web or flange of the H-steel shaped pile, and It is characterized in that the movable claw and the fixed claw arranged at a position facing the movable claw are provided.

[0007]

In the clamp of the pile press-fitting / extracting machine of the present invention having the above-described structure, for example, the moving claw is arranged on the outside of one grip of the connected H steel shaped piles and the fixing claw is arranged on the outside of the other grip. , The flange of the H-steel shaped pile is pressed by the moving claws to be clamped. Alternatively, the clamp of the pile press-fitting / extracting machine of the present invention has moving claws arranged inside each web of the connected H steel-shaped piles and fixing claws outside each web, and the moving claws form an H steel shape. Press and pinch the web of shaped piles. Further, in the chuck of the pile press-fitting / pulling machine of the present invention configured as described above, for example, one flange of the H steel shaped pile is arranged in the vicinity of the fixed claw, and the other flange of the H steel shaped pile is arranged. It is pressed by the moving claws and clamped. Furthermore, the attachment of the pile press-fitting / pulling machine of the present invention configured as described above is an H-steel shaped pile to be press-fitted by the moving claw and the fixed claw after the plate is inserted into the chuck of the pile press-fitting / pulling machine and gripped. To hold.

[0008]

FIG. 1 is a cross-sectional plan view of a clamp of a pile press-fitting / pulling machine according to this embodiment, and FIG. 2 is a cutaway front view of the same portion. As shown in FIGS. 1 and 2, the clamp 1 of the present embodiment has a web 7d of adjacent H steel-shaped piles 7, 7 and an H steel-shaped pile at the bottom of the clamp main body 2 having a lateral width across the web 7d. A recess 3 for insertion is formed, and recesses 2a, 2a for grip withdrawal are provided in the vertical direction at substantially the center of the inner surfaces of the recess 3 facing each other. Fixed claws 4 are formed on both sides of one depression 2a, hydraulic cylinders 5 are provided on both sides of the other depression 2a, and moving claws 6 are connected to rods 5a of each hydraulic cylinder 5.

Since this embodiment is constructed as described above, when it is installed in the pile press-fitting / pulling machine, it operates as follows. An existing H-steel shaped pile row 7 is provided in the recess 3 of the clamp body 2.
Is inserted, the hydraulic cylinder 5 is actuated to extend the rod 5a, and the fixed claw 4 and the movable claw 6 are used to move the flange 7 from both sides.
Hold a. At that time, the grips 7b, 7c of the H-steel shaped pile 7 adjacent to the recess 2a are retracted.

When the clamped state is released, the hydraulic cylinder 5 is operated to retract the rod 5a and completely release the grips 7b and 7c of the H-steel shaped pile 7 from the recess 2a to fix the fixed claw 4 and the movable claw. 6 is separated from the flange 7a of the H steel shape pile 7. Clamp 1 with H steel shape pile 7 open
After moving the whole in the traveling direction, the hydraulic cylinder 5 is operated again to retract the grips 7b and 7c in the recess 2a, and the flange 7a of the next H steel-shaped pile row 7 is fixed to the fixing claw 4.
It is clamped by the moving claw 6. Thus, according to this embodiment,
With the grips 7b and 7c of the H-steel shaped pile 7 retracted into the recess 2a, the connection point between the web 7d and the flange 7a is pressed from the outside, so the H-steel shaped pile 7 can be securely deformed or damaged. Can be sandwiched between.

Next, a second embodiment of the clamp of the pile press-fitting / extracting machine of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a partially cutaway front view of the clamp of the pile press-fitting / pulling machine according to this embodiment, and FIG. 4 is a side view of the same. In the clamp 10 of this embodiment, a slide groove 11a is formed on a base 11 of a pile press-in / pull-out machine, and a pair of clamp bodies 12 are provided in the slide groove 11a in the left-right direction with respect to the pile row of the H-steel shaped pile 7. It is configured to be slidably attached to. Inside the upper part of one body 12, a hydraulic cylinder 15
Is provided, and the tip portion of the rod 15a is connected to the upper portion of the other main body 12. Further, fixed claws 14 are formed on the surfaces of the main bodies 12 that face each other.

Since this embodiment is constructed as described above, it is operated as follows when it is installed in the pile press-fitting / pulling machine.
When the H-shaped steel pile 7 is clamped, the hydraulic cylinder 15 is operated to retract the rod 15a so that the flange 7a of the next H-steel steel pile 7 is clamped by the fixed claw 14. When the clamped state is released, the hydraulic cylinder 15 is operated to extend the rod 15a, and the fixing claw 14 is separated from the flange 7a of the H steel shaped pile 7. In this embodiment, the H steel shape pile 7 is used.
Since only the flange 7a is held while avoiding the grips 7b and 7c, there is little risk of damaging the grips 7b and 7c. Further, since the main body 12 can be largely opened left and right, the main body 12 can be horizontally moved forward or backward without being lifted above the H-steel shaped pile row 7.

Next, a third embodiment of the clamp of the pile press-fitting / extracting machine of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5 is a partially sectional plan view of a clamp of the pile press-fitting / pulling machine according to this embodiment, and FIG. 6 is a cutaway front view of the same portion. In the clamp 20 of the present embodiment, recesses 23 for inserting the flanges 7 a of the H-steel shaped piles 7 are formed in the lower part of the clamp body 22, and the hydraulic cylinder 25 is provided in the clamp body 22 between the recesses 23.
Is provided, and the moving claw 2 is attached to the rod 25a of each hydraulic cylinder 25.
6 is connected, and a moving claw 27 is connected to the rear end of each hydraulic cylinder 25. Further, a fixed claw 24 is provided on the inner surface of the recess 23 facing the movable claw 26 and the movable claw 27. The fixed claws 24, 24 are provided with grip retract recesses 24a, 24a in the vertical direction, and the movable claws 26, 27 are provided with grip retract recesses 26a, 27a in the vertical direction. ing.

Since the present embodiment is constructed as described above, when it is installed in the pile press-fitting / pulling machine, it operates as follows. The flange 7a of the existing H steel shape pile row 7 is recessed 23
Inserted into the rod 2 and actuating the hydraulic cylinder 25,
5a is extended to form a flange 7 on one side of the H-steel shaped pile 7
A is clamped by the fixed claw 24 and the movable claw 26. At the same time, the rear end of the hydraulic cylinder 25 is moved to the other flange 7a side of the H-steel shaped pile 7, and the fixed claw 24 and the moving claw 27 clamp the other side flange 7a. At that time, the depressions 24a, 2
The grips 7b and 7c of the H-steel shaped pile 7 are retracted to 6a and 27a. When releasing the clamped state, the hydraulic cylinder 25 is operated to retract the rod 25a, and the moving claw 2 is moved.
6 and 27 are separated from the flange 7 a of the H-steel shaped pile 7. In this state, the clamp body 22 is lifted above the existing H steel shaped pile row 7, and the flange 7a of the front H steel shaped pile 7 is inserted into the recess 23, and then the hydraulic cylinder 25 is operated again. The flange 7a is sandwiched between the fixed claw 24 and the movable claw 26 and between the fixed claw 24 and the movable claw 27.

In this embodiment, since the hydraulic cylinder 25 is provided in the clamp body 22 inserted into the H steel shaped pile 7, the entire clamp can be downsized, and the flanges 7a on both sides of the H steel shaped pile 7 are provided inside. From the same time, it presses outwards at the same time, so it has excellent clamping force. Although the hydraulic cylinder 25 is arranged inside the H steel shaped pile 7 in the present embodiment, the invention is not limited to this, and the hydraulic cylinder 25 may be arranged outside the H steel shaped pile 7.

FIG. 7 is a partial cross-sectional plan view of the clamp of the pile press-fitting / pulling machine according to the fourth embodiment. Clamp 3 of this embodiment
0 is the flange 7a of the H steel shape pile 7 inside the main body 32.
The hydraulic cylinders 35 and 37 are provided for sandwiching and the concave portion 33 for inserting the flange 7a of the H steel shaped pile 7 is formed in the lower portion of the main body 32. A rod 35a of the hydraulic cylinder 35 is projected into one of the recesses 33, a moving claw 36 is connected to the rod 35a, and a fixed claw 34 is provided on the surface facing the moving claw 36.

A hydraulic cylinder 37 is provided in the other recess 33.
The rod 37a is protruded to connect the moving claw 38 to the rod 37a, and the fixed claw 39 is provided on the surface facing the moving claw 38. Further, the central portion of the fixed claws 34, 39 in the vertical direction. Are provided with recesses 34a and 39a for retracting the grip,
Dimples 36a and 38a for retracting the grip are also provided in the longitudinal direction of the central portions of the moving claws 36 and 38, respectively. In the present embodiment, since two hydraulic cylinders are arranged, the operation is reliable, and the H steel-shaped pile 7 can be reliably clamped or released by only slightly extending or retracting the rods 35a and 38a. Excel.

FIG. 8 is a partially cutaway front view of the clamp of the pile press-fitting / pulling machine according to the fifth embodiment. Clamp 4 of this embodiment
In the case of 0, a pair of clamp main bodies 42 are attached to the lower part of the base 41 so as to be slidable in the left-right direction with respect to the pile row of the H-steel shaped piles 7, and a hydraulic cylinder 45 is provided inside each clamp main body 42. At the bottom of the clamp body 42, H steel shape pile 7
The concave portion 43 for inserting the flange 7a is formed. Then, the rod 45a of the hydraulic cylinder 45 is projected into each recess 43, the moving claw 46 is connected to this rod 45a, and the fixed claw 44 is provided on the surface facing the moving claw 46. Further, in this embodiment, a hydraulic cylinder 47 for adjusting the pile width is attached to the upper part of one clamp body 42, and its rod 47a is connected to the upper part of the other clamp body 42. Since this embodiment is configured in this way,
By operating the hydraulic cylinder 47, it is possible to cope with H steel shaped piles having various pile widths. In addition, each clamp body 42
Since the hydraulic cylinder 45 for sandwiching the pile is provided in the pile, the pile press-in / pull-out machine can be surely placed on the existing pile row.

FIG. 9 is a partial cross-sectional plan view of the clamp of the pile press-fitting / pulling machine according to the sixth embodiment. Clamp 5 of this embodiment
0 clamps the web 7d of the existing H-steel shaped pile row 7, and the clamp body 52 is provided with a recess 53 for inserting the web in the lower portion of the clamp body 52 formed to be slightly smaller than the width of the web 7d. A hydraulic cylinder 55 for sandwiching the pile is provided inside. The rod 55 of this hydraulic cylinder 55
a is projected into the recess 53, a moving claw 56 is connected to the end thereof, and a fixed claw 54 is provided on the surface facing the moving claw 56.

In this embodiment, this clamp body 52 is
Individually provided adjacent to each other, the recess 53 having the same configuration as the above-mentioned configuration,
Hydraulic cylinder 55 for pinching the pile, moving claw 56 and fixed claw 5
4 is similarly provided. According to the present embodiment, the clamp main body 52 is configured in this manner so that the clamp main body 52 is disposed between the flanges 7a and 7a of the adjacent H steel shaped piles 7 and the web 7d.
And the web 7d. By operating the hydraulic cylinder 55, the pile press-fitting / extracting machine can be installed without sandwiching the flange 7a exposed to the outside. In particular, according to the present embodiment, even when the H-steel shaped pile is installed in the ground in the vicinity of a row building, an obstacle, etc., the pile can be easily and reliably sandwiched without being obstructed by these. be able to.

FIG. 10 is a partial sectional plan view of the clamp of the pile press-fitting / pulling machine according to the seventh embodiment. The clamp 60 of this embodiment also clamps the web 7d of the existing H steel-shaped pile row 7. In this embodiment, a recess 63 for inserting the flange 7a of the H-steel shaped pile 7 is formed in the lower portion of the clamp body 62, a hydraulic cylinder 65 is provided inside the clamp body 62, and a rod 65a of the hydraulic cylinder 65 is provided. While the moving claw 66 is connected, the moving claw 67 is also connected to the rear end portion of the hydraulic cylinder 65. Further, fixed claws 64 are provided on the inner surfaces of the recesses 63 facing the movable claws 66 and 67, respectively.

Like the sixth embodiment, this embodiment also holds the web 7d inside the pile row, so that the top of the H-steel shaped pile row 7 is installed in the ground close to a building or an obstacle. A pile press-in / pull-out machine can be mounted on. Further, the moving claws 66, 67 act to separate the webs 7d of the H steel shaped pile 7, but since the fixed claws 64 hold the respective webs 7d from the opposite side, the grips 7b, 7c may come off. Nor.

Next, a first embodiment and a second embodiment of the chuck of the pile press-fitting / pulling machine of the present invention will be described with reference to FIGS. 11 and 12. FIG. 11 is a partially cutaway plan view of the first embodiment of the chuck of the pile press-fitting and extracting machine. The chuck 70 of this embodiment
In the main body 71, a pile insertion portion 72 into which an H steel-shaped pile can be almost inserted is formed, and a hydraulic cylinder 73 for gripping the pile is provided inside one end of the main body 71. A moving claw 74 is connected to the rod 73a of the hydraulic cylinder 73, and a fixed claw 75 is provided on the inner surface of the other front end facing the moving claw 74. In this embodiment, the H-steel shaped pile 7 to be gripped with the moving claw 74 retracted is inserted into the pile insertion portion 72,
The hydraulic cylinder 73 is operated to move the movable claw 74 and the fixed claw 75.
The H steel shape pile 7 is gripped by and. In this embodiment, since the front of the chuck 70 is completely opened, the H steel shape pile 7 is formed.
It is easy to mount the H-shaped steel pile 7 and the web 7d grips the place where the web 7d is connected to the flange 7a from the outside.
The effect is that there is little risk of deforming.

FIG. 12 is a partially cutaway plan view of a second embodiment of the chuck of the pile press-fitting and extracting machine. The chuck 76 of this embodiment
In the above, an insertion groove 77 for inserting the flange of the H steel shaped pile is formed in the front, and a hydraulic cylinder 78 for gripping the pile is provided between the insertion grooves 77. The flange is pressed by the moving claw 79 at the tip of the rod 78a of the hydraulic cylinder 78 and the fixed claw 78b at the rear end of the hydraulic cylinder 78 to grip the H steel shaped pile. According to the present embodiment, since approximately half of the H-steel shaped piles to be gripped are exposed in front of the chuck 76, the entire chuck can be downsized.

Next, first to third embodiments of the attachment of the pile press-fitting / pulling machine of the present invention will be described with reference to FIGS. 13 to 15. FIG. 13 is a partially cutaway plan view of the attachment of the pile press-fitting / pulling machine according to the first embodiment. The attachment 80 of the present embodiment has a plate 82 at the rear end of a support plate 81, which has a width about half that of the flange 7a of the H-steel shaped pile 7.
A pair of the above are fixed and an attachment main body 84 is attached to the front end of the support board 81 so as to be rotatable around the fulcrum shaft 83. Further, the attachment main body 84 has an insertion portion 85 of the flange 7a of the H-steel shaped pile 7 formed in the central portion, and has a gap 86 in the center of the front end of the insertion portion 85 for allowing the web 7d to be inserted. A fixed claw 87 is provided at a position facing the gap 86, and a movable claw 89 that can be extended or retracted by a rod 88a of a hydraulic cylinder 88 is provided on a surface facing the fixed claw 87.

The attachment 80 configured as described above
Can be mounted on the chuck of the pile press-in / pull-out machine, and can be attached to the insertion grooves 78, 78 of the chuck 77 described above, for example.
0 plates 82, 82 are inserted and gripped, one flange 7a of the H-steel shaped pile 7 to be gripped is inserted into the insertion part 85 of the attachment 80, and the fixed claw 87 and the moving claw 89 grip the web 7d. can do. By using this attachment 80, the new H-steel shaped pile 7 can be press-fitted into the ground at a place that cannot be press-fitted with a normal chuck.

FIG. 14 is a partially cutaway plan view of the attachment of the pile press-fitting / pulling machine according to the second embodiment. In the attachment 90 of this embodiment, a pair of plates 92 having the same structure as the above-described plate 82 are fixed to the rear end of the support plate 91, and an attachment body 94 is attached to the front end of the support plate 91 so as to be rotatable around a fulcrum shaft 93. Configure. The attachment body 94 is provided with an insertion groove 95 for the flange 7a of the H-steel shaped pile 7 at the front end, and a hydraulic cylinder 96 for gripping the pile is arranged between the insertion grooves 95. Further, moving claws 97 and 98 are provided at the rear end of the hydraulic cylinder 96 and the tip of the rod 96a, respectively, and fixed claws 99 and 99 are provided at positions facing the moving claws 97 and 98, respectively. With the above configuration, the plate 92 can be inserted into and fixed to the chuck (not shown) of the pile press-fitting / extracting machine, and the flange 7a of the H-steel shaped pile 7 can be inserted into the insertion groove 95. Then, it becomes possible to grip the movable body with the movable claw and the fixed claw, rotate the attachment body 94 to an optimum position, and press it into the ground.

FIG. 15 is a plan view of the attachment of the pile press-fitting / pulling machine according to the third embodiment. The attachment 100 of this embodiment has a plate 10 having the same configuration as the plates 82 and 92 described above at the outer rear end of a substantially cylindrical body 101.
2 and 102 are fixed, and the gripping body 1 of the H steel shape pile 7 is provided inside.
03 is rotatably attached. The holding body 103 is formed with a flat H-shaped insertion hole 104 into which the H-steel shaped pile 7 can be inserted from above, and at a place where the web 7d is inserted,
A moving claw 106 that can be extended or retracted by a rod 105a of the hydraulic cylinder 105 is provided. Further, a fixed claw 107 is provided at a position facing the moving claw 106 so that the web 7d of the H-steel shaped pile 7 inserted in the insertion hole 104 can be clamped from both sides thereof. According to this embodiment, there is an effect that the new H-steel shaped pile 7 can be rotated to the most suitable state for connection and pressed into the ground.

[0029]

According to the present invention, since the moving claws are arranged inside or outside the grip of the H steel shape pile, the flange of the H steel shape pile can be simultaneously clamped, and the pile press-fitting / extracting machine is already installed. It can be securely installed on the H-steel shaped pile row and moved by itself. Further, when the web of the connected H steel shape piles is clamped by the moving claws, the clamp does not protrude to the outside of the H steel shape pile row, so the pile press-in / pull-out machine can be used even in places where the construction space is limited. It can be installed securely on the existing H-steel pile row and moved by itself. Further, since the chuck can reliably grip the flange or the web of the H-steel shaped pile, a series of press-in / pull-out operations can be automated by using the chuck together with the clamp. Furthermore, since the attachment can be easily attached to the above-mentioned chuck, a new H steel shape pile can be pressed into the ground at an appropriate angle in a place that cannot be press-fitted by the pile press-in / pull-out machine alone. Produce the effect of.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a first embodiment of a clamp for a pile press-fitting / extracting machine of the present invention.

FIG. 2 is a cutaway front view of the same portion.

FIG. 3 is a partially cutaway front view of a second embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 4 is a side view of the same.

FIG. 5 is a partial cross-sectional plan view of a third embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 6 is a cutaway front view of the same portion.

FIG. 7 is a partial cross-sectional plan view of a fourth embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 8 is a partially cutaway front view of the fifth embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 9 is a partial cross-sectional plan view of the sixth embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 10 is a partial cross-sectional plan view of the seventh embodiment of the clamp of the pile press-fitting / extracting machine.

FIG. 11 is a partially cutaway plan view of the first embodiment of the chuck of the pile press-fitting and extracting machine.

FIG. 12 is a partially cutaway plan view of a chuck of a pile press-fitting / pulling machine according to a second embodiment.

FIG. 13 is a partially cutaway plan view of the attachment of the pile press-fitting / pulling machine according to the first embodiment.

FIG. 14 is a partially cutaway plan view of a second embodiment of the attachment of the pile press-fitting / pulling machine.

FIG. 15 is a plan view of the attachment of the pile press-fitting / pulling machine according to the third embodiment.

[Explanation of symbols]

1, 10, 20, 30, 40, 50, 60 Clamps 12, 22, 32, 42, 52, 62 Clamp bodies 23, 33, 43, 53, 63 Recesses 15, 25, 35, 45, 47, 55, 65 Hydraulic cylinders 73, 78, 88, 96, 105 Hydraulic cylinders 15a, 25a, 35a, 45a, 47a Rods 55a, 65a, 73a, 78a, 88a, 96a, 1
05a Rod 26, 27, 36, 38, 46, 56, 66 Moving claw 67, 74, 79, 89, 97, 98, 106 Moving claw 14, 24, 34, 39, 44, 54, 64, 75 Fixed claw 78b , 87, 99 fixed claws 24a, 26a, 27a, 34a, 39a, 36a, 3
8a hollow 70,76 chuck 72 pile insertion part 77,95 insertion groove 80,90,100 attachment 81,91 support plate 82,92,102 plate 85 insertion part 103 gripping body

Claims (4)

[Claims] 1. An extension / retraction movable claw disposed inside or outside a grip of a connected H steel shaped pile, and a fixed claw or an extension / retraction movable movement arranged at a position facing the movement claw. Clamp for pile press-in / pull-out machine consisting of claws. 2. An extension / retraction movable claw disposed inside or outside each web of the connected H steel shaped piles, and a fixed claw or an extension / retraction movable claw disposed at a position facing the movement claw. Clamp for pile press-in / pull-out machine consisting of moving claw. 3. A pile press-fitting / pulling-out comprising a fixed pawl arranged outside a flange or a web of an H-steel shaped pile to be grasped and a movable pawl that is extendable and retractable arranged at a position facing the fixed pawl. Machine chuck. 4. A plate insertable into a chuck of a pile press-in / pull-out machine, a movable claw arranged to extend and retract with respect to a web or a flange of an H-steel shaped pile, and a position opposed to the movable claw. Attachment of a pile press-in / pull-out machine provided with a fixed claw that is used.