JP2534352Y2 - Chuck mechanism of H-type pile press-in and pull-out machine - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a chuck mechanism for an H-type pile press-in / pull-out machine, which presses an H-type pile into the ground by a static load near an obstacle such as a structure. About.

(Prior Art) H-shaped piles are superior in cross-section stress compared to U-shaped piles and the like, and are widely used for quay work, temporary work, and the like. When press-fitting an H-type pile with a static load, press-fitting means by a static load self-propelled pile press-in / pull-out machine 80 is used as shown in FIG. A cylindrical body surrounding the periphery of the pile
A moving claw 83 for pinching the pile is formed in 82.

(Problem to be Solved by the Invention) When an H-shaped pile having substantially the same width and height is inserted into a conventional chuck provided in a static load self-propelled pile press-in / draw-out machine, the entire apparatus becomes large. Further, since this chuck has a circular planar shape, it protrudes beyond the pile width and interferes with obstacles such as a house and a wall, and it was impossible to press-fit an H-shaped pile close to these.

An object of the present invention is to solve such a problem and to provide a chuck of an H-shaped pile press-in and pull-out machine for press-fitting and pulling out an H-shaped pile while approaching an obstacle or the like while traveling by itself.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a main body having an opening formed on one side for inserting a web of an H-shaped pile, and a means for holding one flange in the main body. It is characterized in that the configured storage portion is formed, and the other flange is exposed from the main body.

Further, a means for holding the web of the H-shaped pile by the moving claws opposed to each other is provided, a main body having an opening provided with the holding means formed on one side is provided, and a storage portion for one flange is formed in the main body. In addition, the other flange is exposed from the main body.

Further, a support is provided to be inserted between the flanges facing each other with the web interposed therebetween, and the support has a pressing means for pressing the inner surfaces of the flanges.

Further, a main body having an opening formed on one side for inserting the opposed flanges on one side of the H-shaped pile is provided, and a clamping means for clamping the flange in the opening is provided. A storage portion for storing a part of the grip and the flange is formed, and the grip and the web on the other side are exposed from the main body.

(Operation) After inserting the web into the opening of the main body and storing one flange in the storage portion, the holding mechanism is operated by a chuck mechanism to hold the web on both sides of the stored flange or on both sides of the opening, and form an H-shape. Support the pile.

When a support is provided, the support is inserted between the flanges, and a means for pressing the inner side surface of the flange is operated to set H
Support the pile.

If the main body is formed with an opening for inserting one of the opposed flanges, the grip and a part of the flange connected to the grip are stored in the opening, and the clamping means is operated to support the H-shaped pile. I do.

(Embodiment) FIG. 1 is a plan view of a first embodiment of the present invention, and FIG. 2 is a front view of the same. The chuck mechanism 1 of the present embodiment includes a substantially rectangular parallelepiped main body 2, an opening 3 for inserting the web W of the H-shaped pile is formed on one side of the main body 2, and an H
The storage part 4 of the flange F of the mold pile P is configured. Body 2
The rear end of the outer surface is rotatably mounted on the front end of the mast 70 of the H-shaped pile press-in and pull-out machine 50.

The storage part 4 is provided with at least a flange width B of the H-shaped pile P.
And a space larger than the thickness L of the grip G. A pair of convex portions are formed in the storage portion 4 in parallel so as to face the outer surface of the stored flange F to form fixed claws 5 and 5. Fluid pressure cylinders 7, 7 are provided on both sides of the opening 3.
And moving claws 8, 8 are formed at the rod ends.

This embodiment is used as follows. That is, the H-shaped pile P is inserted into the storage section 4 from above the chuck mechanism 1 (in the direction of the arrow in FIG. 2), and the movable claws 8, 8 are moved to the fixed claws 5, 5 by operating the fluid pressure cylinders 7, 7. Elongate. Opposing fixed claws 5
And the moving claws 8 to clamp the flange F. When the web is clamped, approximately half of the web W and the other flange F are exposed from the main body 2, so that the chuck mechanism 1 can be reduced in size to approximately half the size of the conventional one.

In this embodiment, the flange F is sandwiched between the fixed claws 5 and the movable claws 8. However, both the claws may be movable and sandwiched between a pair of movable claws 8 from outside and inside the flange F. If all the means for holding the H-shaped pile P are the moving claws 8 as described above, the holding position and the press-fitting position of the H-shaped pile P can be finely adjusted.

Next, the process of press-fitting the H-shaped pile P with the self-propelled H-shaped pile press-in / draw-out machine 50 will be described.

The H-shaped pile press-in / pull-out machine 50 includes a clamp for holding an existing H-shaped pile, a saddle 55 having a clamp attached to a lower end thereof, a slide base 60 attached to an upper portion of the saddle 55 so as to be slidable back and forth, and It consists of a mast 70 standing on a base 60 and the like.

First, the H-shaped pile press-in and pull-out machine 50 is installed on the H-shaped pile row (see FIG. 1). An H-shaped stake P, which is a press-fitted stake P, is inserted into the chuck mechanism 1 and the fluid pressure cylinder 7 is operated to hold the stake P. This H-shaped pile P is connected to the H-shaped pile at the front end of the existing pile row,
The chuck mechanism 1 is lowered along with and pressed into the ground.

At this time, even if the other flange F not clamped by the chuck mechanism 1 is press-fitted close to the obstacle 90, the chuck mechanism 1
Since the saddle 55 does not interfere with the obstacle 90, it can be continuously press-fitted near the obstacle 90.

FIG. 3 is a plan view of the chuck mechanism 10 of the second embodiment. In this embodiment, the plane shape of the substantially rectangular parallelepiped main body 12 is substantially C
It has a shape. This embodiment is similar to the first embodiment in that the
An opening 13 for inserting the web W is formed on one side of the main body 12.
Constitutes a storage portion 14 for the flange F. A pair of hydraulic cylinders 17, 17 are provided on both sides of the opening 13 so as to face each other, and moving claws 18, 18 are formed at the rod ends.

In this embodiment, the web W of the H-shaped pile P inserted into the opening 13 is used.
Is held between the moving claws 18, 18 from both sides. When sandwiched, a part of the web W and the other flange F are exposed from the main body 12, so that the chuck mechanism 10 can be reduced in size as in the first embodiment. Note that one moving claw 18 may be replaced with a fixed claw. Since the present embodiment also does not interfere with the obstacle 90, the H-shaped pile P can be continuously pressed in close to the obstacle 90 or the like.

FIG. 4 is a plan view of the chuck mechanism 20 of the third embodiment. In this embodiment, a support 22 is formed to be inserted between the flanges F of the H-shaped pile P, and a pair of hydraulic cylinders 27 are provided in the support 22. The moving claws 28, 28 formed at the rod ends of the fluid pressure cylinders 27, 27 are arranged toward the inner surfaces of both flanges F. In the figure, reference numeral 29 denotes a support rod for connecting the chuck mechanism 20 and the mast 70 of the H-shaped pile press-in / pull-out machine 50.

In this embodiment, the inner surfaces of both flanges F are pressed to
It supports the mold pile P. Therefore, the labor for inserting the H-shaped pile P into the chuck mechanism 20 from above can be reduced. Also H
Since the chuck mechanism 20 is not exposed from both sides of the mold pile P, the size can be reduced as compared with the above embodiment, and the press-fit can be performed close to the obstacle 90. Further, when the mast 70 is provided, it is not necessary to bend the chuck mechanism 20 with respect to the mast 70 in straight hitting, and the reaction force at the time of press-fitting can be ensured.

As described above, the first to third embodiments are particularly effective as a chuck of the H-shaped pile press-in and pull-out machine 50 for press-fitting the H-shaped pile P close to the adjacent object 90.

FIG. 5 is a plan view of the chuck mechanism 30 of the fourth embodiment. In the present embodiment, a pair of storage portions 34 for the grip G are formed in the main body 32, and openings 33, 33 are formed in the respective storage portions 34, 34. On both sides of the opening 33, a pair of fluid pressure cylinders 37, 37 and moving claws 38, 38 each having the same configuration as in the second embodiment are arranged.

When using the present embodiment, the grips G, G of the H-shaped pile P are inserted into the respective storage portions 34, 34 from the front of the main body 32, and each moving claw 38, 38 interposes between the grip G and the web W. Each part is pinched.

In this embodiment, as in the third embodiment, the labor for inserting the H-shaped pile P into the chuck mechanism 30 from above can be omitted.
It is not necessary to bend the chuck mechanism 30 with respect to the mast 70 when performing a straight hit.

(Effects of the Invention) According to the present invention, a part of the H-shaped pile is clamped and the remaining part is exposed from the main body, so that the chuck mechanism and the entire H-shaped pile press-in / draw-out machine can be reduced in size. Further, since the chuck mechanism does not interfere with obstacles such as a house and a wall, there is an effect that an H-shaped pile can be press-fitted close to these.

[Brief description of the drawings]

1 is a plan view of the first embodiment, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the second embodiment, and FIG. 4 is a third embodiment of the present invention. FIG. 5 is a plan view of a fourth embodiment, and FIG. 6 is a plan view of a conventional example. 1, 10, 20, 30 ... chuck mechanism 2, 12, 32 ... body, 3, 13, 33 ... opening 4, 14, 34 ... storage section, 5 ... fixed claw 7, 17, 27, 37 ... fluid pressure cylinder 8, 18, 28, 38: moving claw, 22: support body 90: obstacle, P: H-shaped pile

Claims (4)

(57) [Scope of request for utility model registration] 1. A main body having an opening formed on one side thereof for inserting a web of an H-shaped pile, a storage portion constituting a clamping means for one flange is formed in the main body, and the other flange is connected to the main body. Chuck mechanism of H-type pile press-in and pull-out machine exposed from main body. 2. A body for holding a web of an H-shaped pile with moving claws opposed to each other, a main body having an opening provided with the holding means on one side, and one flange housed in the main body. A chuck mechanism of an H-shaped pile press-in / pull-out machine that forms a part and exposes the other flange from the main body. 3. A chuck mechanism for an H-type pile press-in / pull-out machine, comprising a support inserted between two flanges opposed to each other with a web interposed therebetween, and the support having a pressing means for inner surfaces of both flanges. 4. A main body having an opening formed on one side for inserting opposed flanges on one side of the H-shaped pile, and a clamping means for clamping the flange in the opening is provided. A chuck mechanism for an H-shaped pile press-in / pull-out machine that forms a storage portion for storing a part of a flange and a flange facing each other and exposes a grip and a web on the other side from the main body.