JPH0621458B2 - Pile holding mechanism for work equipment on pile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pile for performing various kinds of materials by self-propelled on an existing pile row or mounting various work devices on the upper portion to perform pile work. The present invention relates to a holding mechanism for a working device.

(Prior Art) Conventionally, a holding mechanism of a work apparatus on a pile has a holding claw that is movable in a direction orthogonal to an existing row of piles, and has a cylinder built therein. Then, the upper and lower ends of the existing piles are pressed by the holding claws formed on the end portions of the cylinders to hold the piles. Therefore, the holding claws of the holding mechanism are thick and the work equipment on the pile is heavy.

In addition, in order to move the pile work device forward or backward on the pile row, the entire holding claw is configured to be vertically movable and forward and backward relative to the existing pile row.

(Problems to be Solved by the Invention) In the holding mechanism of the above-described pile work device, when there is an obstacle near the upper end of the existing pile, it is not possible to hold the pile by colliding part of the holding claws with the obstacle. Since it was possible, it was necessary to cut out or remove obstacles. In such a case, work efficiency is lost and work efficiency is reduced.

In addition, since the entire holding claw was moved up and down with respect to the existing pile row when the pile working device was moved forward and backward, the work efficiency was poor.

The present invention eliminates the above problems, even if there are obstacles and the like in the vicinity of the existing pile, holding and opening of the upper end of the pile is quick,
An object of the present invention is to provide a gripping mechanism for a pile work device that can be reliably performed.

(Means for Solving the Problem) In order to solve the above problems, the present invention provides a support body at the front and rear ends of a main body frame so as to be movable in the left and right directions, and a sandwiching claw in the left and right direction at both ends of the support body. In addition to being rotatable, a front-rear moving body is slidably arranged inside the main body frame, a support body is provided below the front-rear moving body so as to be movable in the left-right direction, and a holding claw is provided at both ends of the support body. Is characterized in that it can be rotated in the left-right direction.

(Operation) Pile by moving the support bodies attached to both ends of the main body frame and the front-rear moving body provided inside the main body frame in the left-right direction and teaching the upper end of the existing pile with the holding claw attached to the tip of the support body. Hold the upper working device on the existing pile.

In moving the pile holding mechanism on the pile row, the piles are held by the holding pawls of the front-rear moving body, and the holding pawls at the front and rear ends of the main body frame are opened to advance the main body frame.

After the movement, the piles are again held by the holding claws at the front and rear ends of the main body frame, the holding claws at the lower part of the front and rear moving body are opened, and the front and rear moving body is advanced to hold a new pile.

By the above-described repetitive operation, the holding mechanism of the pile working device holds the front pile one after another, and the pile working device moves forward on the pile.

In the above-mentioned pile holding action, since each holding claw moves in the left-right direction about both ends of each support, the existing pile can be opened or held without colliding with obstacles in the vicinity of the existing pile. it can.

(Embodiment) FIGS. 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 holding mechanism, FIG. 2 (A) is the same side view, FIG. 2 (B) is the sectional side view taken along the line II-II of FIG. 1, and FIG. 3 is the same plane. It is a figure. A first embodiment will be described below with reference to the drawings.

The pile holding mechanism according to the present embodiment includes a first holding mechanism 10 movably attached to a lower portion of a support body 3 provided at both ends of a main body frame 1 in a left-right direction (a direction orthogonal to a pile row), It is composed of two second holding mechanisms 20 provided inside the main body frame 1 so as to be movable back and forth and left and right.

The first holding mechanism 10 includes a support 11, a cylinder 12 for lateral movement of the support, an arm 14, a holding claw 15, and the like.

The upper part of the support 11 is slidably fitted in the groove 3a formed in the lower end of the support 3 in the left-right direction, the cylinder 12 is fixed to the support 3, and the end portion of the rod 12a is fixed to the support 1.
Fixed to 1. Therefore, the support 11 can be moved in the left-right direction with respect to the support 3 by expanding and contracting the cylinder 12.

An end of a cylinder 13 for opening and closing the holding claw 15 is rotatably attached to both ends of the support 11 and a tip of a rod 13a thereof is rotatably attached to a center of an arm 14. One end of the arm 14 is rotatably attached to the lower portion of the support body 11 by a shaft 11a, and the other end of the arm 14 is rotatably attached to a holding claw 15.

Therefore, when the cylinder 13 is operated and the rod 13a is contracted, the arm 14 rotates upward about the shaft 11a. In this way, the existing pawl P is held or released by the holding claws 15 as the arm 14 rotates.

On the other hand, the two second holding mechanisms 20 attached to the lower part of the front-rear moving body 5 have the same configuration as the first holding mechanism 10, and include the support 21, the cylinder 22, the arm 24, and the holding claw 2.
It consists of 5 mag.

The front-rear moving body 5 has an upper portion slidably fitted in a groove 1a formed in the main body frame 1, and is attached to the main body frame 1 so as to be movable back and forth. That is, the moving body 5 is fixed to the main body frame 1 by fixing the moving cylinder 7 of the front-back moving pair 5 to the upper part of the front-back moving body 5 and fixing one end of the rod 7a thereof to the support body 3.
It is possible to slide in the front-back direction.

The upper portion of the support body 21 is slidably fitted in the groove 5a formed inside the lower end of the front-rear movement body 5, and the cylinder 22 for moving the support body 21 is fixed to the front-rear movement body 5,
The ends of the rods 22a are fixed to the support body 21, respectively. Therefore, by making the cylinder 22 expand and contract, the support body 21 can slide in the left-right direction with respect to the front-rear moving body 5.

Further, the ends of the cylinder 23 for opening and closing the holding claw 25 are rotatably attached to both ends of the support body 21 of the second holding mechanism 20, and the tip of the rod 23a is rotatably attached to the center of the arm. To do. One end of the arm 24 is rotatably attached to the lower part of the movable body 5 by a shaft 21a, and the other end of the arm 24 is rotatably attached to a holding claw 25. When the cylinder 23 is operated and the rod 23a is contracted, the arm 24 moves upward about the shaft 21a.

In addition, a crane, excavator,
Various work devices such as buckets can be mounted.

With this configuration, the operation of the holding mechanism of the on-pile working device will be described below with reference to FIGS. 4 (A) to 4 (F).

FIG. 4 (A) shows both holding mechanisms 10 and 20 of the work equipment on pile.
Operate the open / close cylinders 13 and 23 of all the holding claws 1
5 and 25 show a state in which the upper end of the existing pile P is held. In this state, the opening / closing cylinder 23 of the second holding mechanism 20 is operated, and as the rod 23a retracts, the arm 24 rotates about the shaft 21a and is attracted to the support 21.

(See FIG. 2 (B)) When the arm 24 is completely housed in the lower portion of the support body 21, the holding claw 25 attached to the end of the arm 24 moves to the support body 21 as shown in FIG. 4 (B). It is stored at the bottom of the.

Next, when the cylinder 7 for moving the front-rear moving body 5 is operated to extend the rod 7a, the second holding mechanism 20 moves forward together with the front-rear moving body 5 as shown in FIG. 4 (C). In this state, the opening / closing cylinder 23 of the second holding mechanism 20 is operated, and the upper end of the existing pile P is again held by all the holding claws 15 and 25 as shown in FIG. 4 (D).

In this way, after the pile working device is held on the existing pile by the second holding mechanism 20, as shown in FIG. 4 (E), the first holding mechanism 1
The opening / closing cylinder 13 of 0 is operated, and the holding claw 15 is positioned above the upper end of the existing pile P and is stored below the support 11.

When the cylinder 7 is operated again in this state and the rod 7a is contracted, as shown in FIG.
And the pile holding mechanism moves forward by two pile widths.

By repeating the above operation, the pile work device can move forward on the existing pile P. It is also possible to retreat if the reverse procedure is followed.

As described above, in the holding mechanism according to the present embodiment, the arms 14, 24 rotate about the shafts 11a, 21a at the lower center of the support body with respect to the existing pile row, and the holding claws 15, 25 at the tips of the arms are piled. Hold and open. Therefore, even if an obstacle is protruding near the existing pile row, each holding claw 1
5 and 25 are existing piles P without colliding with those obstacles.
It is possible to hold and open the upper end of the.

Furthermore, it is not necessary to move the entire holding claw up and down with respect to the existing pile rows when the pile working device is moved forward and backward, which improves work efficiency.

Note that FIG. 5 shows a second embodiment of the present invention and is a sectional side view corresponding to line II-II in FIG. 1 of the pile working apparatus of the first embodiment.

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

(Effects of the Invention) As described above, the pile holding mechanism of the pile working device according to the present invention can securely and reliably hold and release the existing pile even if obstacles or the like project near the existing pile. it can. Therefore, the work time on the pile can be shortened and the work efficiency can be improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view of a pile working device having a holding mechanism of the first embodiment of the present invention, FIG. 2 (A) is a side view of the same, and FIG. (B) is II-II in FIG.
FIG. 3A is a plan view of the pile working device with the upper half omitted, FIG. 4A to FIG. 4F are explanatory views showing the operation of the holding mechanism, and FIG. It is a sectional side view of a pile working device showing an example. DESCRIPTION OF SYMBOLS 1 ... Main body frame, 3 ... Support body 5 ... Front / rear moving body, 7 ... Front / rear moving cylinder 7a, 12a, 22a, 13a, 23a. Body 11a, 21a ... Shaft 12, 22, 13, 23 ... Cylinder 14, 24 ... Arm, 15, 25 ... Holding claw 20 ... Second holding mechanism, P ... Existing pile

Claims (1)

[Claims] 1. A support body is provided at the front and rear ends of a main body frame so as to be movable in the left and right directions, and a holding claw is configured at both ends of the support body so as to be rotatable in the left and right directions. Is slidably arranged, a support is provided at the lower part of the front-rear moving body so as to be movable in the left-right direction, and a holding claw is configured at both ends of the support so that the holding claw can be rotated in the left-right direction. mechanism.