JPH0249818A - Pile clamping device for working device set on pile - Google Patents

Abstract

PURPOSE:To make it possible to safely clamp and release an existing pile even though obstacles or the like are projected adjacent to the pile by providing such an arrangement that pawls for clamping a pipe can be rotated. CONSTITUTION:A support member 3 and a longitudinally movable member 5 are provided in the lower part and inside of a body frame 1, respectively, and clamping pawls 15, 25 are attached at both ends of the support member 3 and the lower part of the longitudinally movable member 5. The clamping pawls 15 on the support plate 3 clamp and release a pile when an arm 14 is rotated by cylinder 15. The movement of the entire device is carried out in such a way that a first clamping mechanism 10 on the support member 3 and a second clamping mechanism 2 on the longitudinally movable member 5 are alternately actuated, and a cylinder 7 is operated so as to extend and retract a piston rod 7a, and accordingly, the longitudinally movable member 5 is moved relative to the body frame 1.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to pile-based work in which various materials are transported by self-propelled on existing pile rows, and desk work is carried out by attaching various work devices to the top of the piles. Regarding the clamping mechanism of the device.

(Prior Art) Conventionally, a clamping mechanism of a pile-up working device has a clamping claw that is movable in a direction orthogonal to the existing pile row, and has a cylinder built therein. A clamping claw formed at the end of the cylinder presses the upper end of the existing pile to clamp the pile. As a result, the clamping claws of the clamping mechanism have become thicker, and the pile-top working device has become heavier.

Further, in order to move the pile-up working device forward or backward on the pile row, the entire clamping claw is configured to be movable up and down and back and forth with respect to the existing pile row.

(Problems to be Solved by the Invention) In the above-mentioned clamping mechanism of the pile working device, if there is an obstacle near the top of the existing pile, a part of the clamping claw collides with the obstacle, making it impossible to clamp the pile. If possible, it was necessary to carve out or remove obstacles.

In such a case, there was a loss in both labor and time, and work efficiency decreased.

Furthermore, when the pile-up working device moved forward or backward, the entire clamping claw was moved up and down relative to the existing pile row, resulting in poor work efficiency.

The present invention eliminates the above-mentioned problems, and even if there are obstacles near the existing pile, the top end of the pile can be quickly clamped and released.
It is an object of the present invention to provide a clamping mechanism for a pile work device that can be reliably performed.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides supports that are movable in the left and right directions at the front and rear ends of the main body frame, and clamping claws are provided at both ends of the supports that move in the left and right directions. In addition to being configured to be rotatable, a back-and-forth moving body is slidably arranged inside the main body frame, a support body is provided at the bottom of the back-and-forth moving body so as to be movable in the left-right direction, and clamping claws are provided at both ends of the support body. It is characterized by being configured to be rotatable in the left and right directions.

(Function) By moving the support attached to the front and back moving body provided at both ends of the main body frame and inside it in the left and right direction, and pinching the upper end of the existing pile with the clamping claw attached to the tip of the support, the pile can be removed. Hold the upper working device on the existing desk.

When the pile clamping mechanism moves on the pile row, the clamping claws of the front-rear movable body clamp the pile, and the clamping claws at the front and rear ends of the main body frame are released to move the main frame forward.

After the movement, the stake is again clamped by the clamping claws at the front and rear ends of the main body frame, and the clamping claws at the bottom of the front-rear movable body are released to advance the front-rear movable body to clamp a new pile.

Through the above-described repeated operations, the clamping mechanism of the pile-top working device successively grips the piles in front, and the pile-top working device moves forward on the desk.

In the above-mentioned pile clamping action, each clamping claw rotates in the left and right directions around both ends of each support, so it is possible to release or clamp the existing pile without colliding with obstacles near the existing pile. can.

(Embodiment) Figures 1 to 3 show a first embodiment of the present invention.
The figure is a front view of the entire pile working device including the clamping mechanism, and Figure 2 (
A) is a side view of the same, FIG. 2(B) is a cross-sectional side view taken along the line ■--■ of FIG. 1, and FIG. 3 is a plan view of the same. A first embodiment will be described below with reference to the drawings.

The pile clamping mechanism according to this embodiment includes a first clamping mechanism 10 that is movably attached to the lower part of the supports 3 provided at both ends of the main body frame 1 in the left-right direction (direction perpendicular to the pile row); It consists of two second clamping mechanisms 20 that are provided inside the main body frame 1 so as to be movable back and forth and left and right.

The first clamping mechanism 10 includes a support 11, a cylinder 12 for moving the support laterally, an arm 14, a clamping claw 15, and the like.

The upper part of the support 11 is fitted into the groove 3a cut inside the lower end of the support 3 so as to be slidable in the left and right direction, and the cylinder 12 is fixed to the support 3, and the end of the rod 12a is inserted into the support 1.
Fixed to 1. Therefore, by telescopically operating the cylinder 12, the support body 11 can be moved in the left-right direction with respect to the support body 3.

Ends of a cylinder 13 for opening and closing the clamping claws 15 are rotatably attached to both ends of the support 11, and the tip of the rod 13a is rotatably attached to the center of the arm 14. One end of the arm 14 is rotatably attached to the lower part of the support 11 via a shaft 11a, and a clamping claw 15 is rotatably attached to the other end.

Therefore, when the cylinder 13 is operated to contract the rod 13a, the arm 14 rotates upward about the shaft 11a. In this way, as the arm 14 rotates, the clamping claws 15 clamp and release the existing pile P.

On the other hand, the two second clamping mechanisms 20 attached to the lower part of the front-back moving body S have the same configuration as the first clamping mechanism 1°0 described above, and include a support body 21, a cylinder 22, an arm 24, a clamping claw 2
Consists of S etc.

The longitudinal moving body 5 is attached to the main body frame 1 so as to be movable back and forth, with its upper part fitted into a groove 1a cut inside the main body frame 1 so as to be freely movable. That is, by fixing the cylinder 7 for moving the longitudinally moving body 5 to the upper part of the above-mentioned longitudinally movable body 5 and fixing one end of the rod 7a to the support body 3, the longitudinally movable body S can be moved relative to the main body frame 1.
This allows it to slide forward and backward.

The upper part of the support body 21 is fitted into the groove 5a cut inside the lower end of the back and forth moving body 5 so as to be slidable in the left and right direction, and the cylinder 22 for moving the support body 21 is fixed to the back and forth moving body 5,
The ends of the rods 22a are each fixed to the support body 21. Therefore, by telescopically operating the cylinder 22, the support body 21 can be slid in the left-right direction with respect to the front-rear movable body 5.

Further, the ends of the cylinder 23 for opening and closing the clamping claw 25 are rotatably attached to both ends of the support body 21 of the second clamping mechanism 20, and the tip of the rod 23a is rotatably attached to the center of the arm. do. One end of the arm 24 is connected to the shaft 2 at the bottom of the moving body 5.
1a, and a clamping claw 25 is rotatably attached to the other end. When the cylinder 23 is actuated to contract the rod 23a, the arm 24 rotates upward about the shaft 21a.

In addition, a crane, excavator,
Various work devices such as packets can be installed.

The operation of the clamping mechanism of the pile working device with this configuration will be described below with reference to FIGS. 4(A) to 4(F).

Figure 4 (A) shows the gripping mechanism 10.20 of the pile work device.
Activate the opening/closing cylinder 13.23 to close all the clamping claws 1.
5.25 shows the state in which the upper end of the existing pile P is clamped. In this state, the opening/closing cylinder 23 of the second clamping mechanism 20 is operated, and as the rod 23a retracts, the arm 2
4 rotates around the shaft 21a and is drawn to the support body 21.

(See Fig. 2(B)) When the arm 24 is completely housed under the support 21, the clamping claw 25 attached to the end of the arm 24 will move as shown in Fig. 4(B).
), it is housed in the lower part of the support body 21.

Next, when the cylinder 7 for moving the longitudinally moving body 5 is actuated to extend the rod 7a, the second clamping mechanism 20 moves forward together with the longitudinally movable body 5, as shown in FIG. 4(C). In this state, the opening/closing cylinder 23 of the second clamping mechanism 2o is operated to clamp the upper end of the existing pile P again with all the clamping claws 15.25, as shown in FIG. 4(D).

After the pile working device is held on the existing pile by the second clamping mechanism 20, as shown in FIG. 4(E), the first clamping mechanism 1
The opening/closing cylinder 13 of No. 0 is operated, and its clamping claw 15 is positioned above the upper end of the existing pile P and housed below the support body 11.

In this state, when the cylinder 7 is operated again and the rod 7a is contracted, the main body frame 1 is retracted as shown in FIG.
moves forward, and the pile clamping mechanism moves forward by two pile widths.

By repeating the above operations, the pile working device can move forward on the existing pile P. It is also possible to go backwards by following these steps in reverse.

As described above, in the clamping mechanism according to this embodiment, the clamping claws 15.25 at the tip of each arm rotate against the existing row of piles by rotating the arms 14.24 about the axes ILa, 21a at the lower center of the support. Holding and releasing. Therefore, even if obstacles protrude near the existing pile row, each clamping claw 15.
25 can hold the upper end of the existing pile P and release it without colliding with such obstacles.

Furthermore, there is no need to move the entire clamping claw up and down relative to the existing pile row when the pile-up working device moves forward or backward, improving work efficiency.

FIG. 5 shows a second embodiment of the present invention, and is a cross-sectional side view of the pile working device according to the first embodiment, corresponding to the line ``--shore'' in FIG. 1.

The length of the support 31 of the second embodiment is shorter than that of the first embodiment, and the rod side ends of the clamping claw opening/closing cylinders 33 are rotatably attached to both sides of the support 31. It is something that Other configurations and operations are similar to those of the first embodiment. According to this embodiment, since the length of the support body 31 is short, it can be used in a narrower work site.

(Effects of the Invention) As explained above, the pile clamping mechanism of the pile working device according to the present invention can safely and reliably clamp and release existing piles even if obstacles protrude near the existing piles. can. Therefore, it is possible to reduce desk work time and improve work efficiency.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a front view of a pile working device equipped with a clamping mechanism according to the first embodiment of the present invention, FIG. 2(A) is a side view of the same, and FIG. (B) is ■−■ in Figure 1.
3 is a plan view with the upper half of the pile working device omitted, FIG. 4 (A) to (F) are explanatory diagrams showing the operation of the clamping mechanism, and FIG. FIG. 2 is a cross-sectional side view of a pile working device, showing an embodiment. 1... Main body frame 3... Support body 5... Back and forth moving body 7... Back and forth moving cylinders 7a, 12a,
22a, 13a, 23a... Rod 1o... First clamping mechanism 11.21... Support bodies 11a, 21a... Shaft

Claims (1)

[Claims] A support body is provided at the front and rear ends of the main body frame so as to be movable in the left and right direction, and gripping claws are provided at both ends of the support body so as to be rotatable in the left and right direction, and a front and rear moving body is slidably provided inside the main body frame. A pile clamping mechanism for a pile-up working device, wherein a support body is provided at the lower part of the longitudinally movable body so as to be movable in the left-right direction, and clamping claws are configured to be rotatable in the left-right direction at both ends of the support body.