JPH073067B2 - Pile moving method of pile working device, pile holding mechanism and pile holding method - 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 method for moving a work device on a pile, a pile holding mechanism, and a pile holding method.

(Prior Art) Pile work devices include a pile press-in / pull-out machine for continuously press-fitting piles, a work machine for carrying out various work by mounting a crane or the like, or a moving device for carrying piles or materials. In each case, a predetermined work is performed while moving on the existing pile row that has been continuously driven.

These pile-up working devices are provided with a plurality of holding mechanisms such as clamps and chucks, and one of the holding mechanisms holds an existing pile to hold the supporting force, and the working device moves on the pile. As shown in FIG. 6 (A), this gripping mechanism is composed of gripping claws 51 and 52 that are horizontally movable in a direction orthogonal to the existing pile rows. The operation of the holding claw of the holding mechanism has been performed as follows.

First, an operation for holding the existing piles P by horizontally moving the holding claws 51 and 52 in a direction orthogonal to the pile row. For example, in the case of a steel sheet pile, the web is clamped by moving orthogonally to the web.

Next, operation to move in the vertical direction. For example, when the working device moves forward on the pile row, first, the holding state of the holding claw 52 is released from the existing pile P12, and then the work device rises in the arrow direction of FIG. 6 (A). Then, after the working device advances, the holding claw 52 is lowered again to hold the existing pile P13. Then, as shown in Fig. 6 (C), the holding claw 52 raises the holding claw 51 with the pile work device fixed on the existing pile P13, and the holding claw 51 is advanced by the width of the pile and then lowered. The existing claws 12 are held by the holding claws 51. Such vertical movement prevents the holding claw from colliding with the existing pile.

By repeating the above operation, the pile work device holds the upper end of the existing pile row and moves by itself.

(Problems to be Solved by the Invention) However, in the above-described pile-holding method and pile-moving method, it is necessary to raise the entire gripping claw when moving on the pile, resulting in poor work efficiency. In addition, when there is an obstacle on the upper part of the existing pile, the upper part of the work device on the pile may collide with the obstacle, which may make the work impossible. Also, since the cylinder mechanism for operating the gripping claw is installed internally, the gripping mechanism becomes thick and the working device becomes heavy.

The present invention eliminates the above-mentioned problems, and even if there are obstacles or the like at the upper end of the existing pile, a moving method and a pile holding method that can quickly and reliably hold and release the existing pile and move the device on the pile. The purpose is to provide a method.

(Means for Solving the Problem) In order to solve the above problem, the method for moving on a pile of the present invention is
Place the work device on the pile row by sandwiching the upper end of the existing pile with the sandwiching claws at the front and rear ends of the body frame and the lower part of the body frame, and sandwiching the upper ends of the existing piles by the sandwiching claws of the front-rear moving body that are attached to the body frame so as to be movable back and forth. After that, the sandwiching claws of the front-rear moving body are rotated in a direction orthogonal to the pile row to release the sandwiched state of the piles, and the front-rear moving body is moved toward the body. After moving, the upper and lower ends of the pile are again held by the holding claws of the front and rear moving bodies.

Next, the holding claws of the main body frame are rotated in a direction orthogonal to the pile row to release the held state of the piles and the main body frame is moved forward, and then the upper ends of the existing piles are again held by the holding claws.

Further, the pile holding mechanism has a structure in which a pair of holding pawl opening / closing mechanisms are attached to both sides of a support member of the pile working device, and the holding pawls are rotatable at one end of the opening / closing mechanism in a direction orthogonal to the pile row. The pile holding method is characterized in that a pair of holding claw opening / closing mechanisms configured on both sides of the pile working device are operated, and the holding claws are rotated in a direction orthogonal to the pile row to press the pile surface from both sides. To do.

(Operation) The upper ends of the existing piles are held by the holding claws of the support portions attached to both ends of the main body frame and the front-rear moving body, and the pile work device is fixedly held on the existing piles.

When moving the pile work device on the pile row, the piles are held by the holding claws of the front-rear moving body, and the holding claws at the front and rear ends of the main body frame are released to advance the main body frame. After the movement, the holding claws of the main body frame again hold the pile, and the holding claws at the lower part of the front and rear moving body are released to advance the front and rear moving body to hold a new pile.

By repeating the above operation, the pile work device advances on the pile.

In the above-mentioned pile holding action, each holding claw is in the left-right direction centering on both ends of each support and support (direction orthogonal to the pile row).
Since it makes a rotational movement, the existing pile can be released and held without colliding with an obstacle or the like near the existing pile.

(Embodiment) FIGS. 1 to 3 show an embodiment of a pile working device used in the present invention, FIG. 1 is a side view of the pile working device, and FIG. 2 (A) is a front view of the same. 2 (B) is a sectional front view taken along the line II-II of FIG. 1, and FIG. 3 is a cutaway plan view of the same portion.

The pile working device A used in the present invention will be described. This work apparatus A on piles is provided with supporting portions 3 at both ends of a main body frame 1, and a first holding mechanism 10 at a lower portion of the main body frame 1. In addition, the front and rear moving bodies 5 provided at the bottom of the main body frame 2
Two second holding mechanisms 20 are attached.

The first holding mechanism 10 includes a support 11, a cylinder 12 for lateral movement of the support, a cylinder 13 for opening and closing a holding claw, an arm 14, and a holding claw.
It consists of 15 mag.

Then, the upper portion of the support body 11 is slidably fitted in the groove 3a formed in the lower end of the support portion 3 in the left-right direction (direction orthogonal to the pile row), and the cylinder 12 is fixed to the support portion 3, The end of the rod 12a is fixed to the support 11. Therefore, the support 11 can be moved in the left-right direction with respect to the support portion 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 the center of an arm 14. One end of the arm 14 is rotatably attached to the lower part of the support 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 to retract the rod 13a, the arm 14 rotates upward about the shaft 11a. In this way, the existing pawl P is held or released by the holding claw 15 in accordance with the pivotal movement of the arm 14.

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 structure as the first holding mechanism 10 and are composed of a support body 21, a cylinder 22, an arm 24, a holding claw 25 and the like. .

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

The support member 21 is provided in the groove 5a formed in the lower portion of the front-rear moving member 5.
The upper part of the
The moving cylinder 22 is fixed to the front-rear moving body 5, and the ends of the rods 22a thereof are fixed to the supporting body 21, respectively. Therefore, when the cylinder 22 is expanded and contracted, the support body 21 can slide in the left-right direction with respect to the front-rear moving body 5.

In addition, a holding claw is provided at both ends of the support body 21 of the second holding mechanism 20.
The end of the cylinder 23 for opening and closing is rotatably attached, and the tip of the rod 23a is rotatably attached to the arm. One end of the arm 24 is rotatably attached to the lower part of the support body 21 by a shaft 21a, and the other end is rotatably attached to a holding claw 25. When the cylinder 23 is operated and the rod 23a is retracted, the arm 24 rotates upward about the shaft 21a.

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

The method of moving the work apparatus on the pile and the pile holding mechanism and the method of holding the pile will be described with reference to FIGS. 4 (A) to 4 (F).

Opening / closing cylinder 1 for both-side-holding mechanisms 10 and 20 of work equipment A on pile
As shown in FIG. 4 (A), 3 and 23 are actuated to hold the upper ends of the existing piles P with all the holding claws 15 and 25.

The cylinder 24 for opening and closing the second holding mechanism 20 is operated, and as the rod 23a retracts, the arm 24 rotates around the shaft 21a and is attracted to the support 21. (See FIG. 2 (B)) When the arm 24 is housed in the lower part of the support body 21, the holding claw 25 attached to the end of the arm 24 also has a lower part of the support body 21 as shown in FIG. 4 (B). Is stored in.

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 is moved forward (to the left in the drawing) together with the front-rear moving body 5 as shown in FIG. 4 (C). Move to.

After the movement, the rod 23 of the opening / closing cylinder 23 of the second holding mechanism 20
Extend a and again hold the upper end of the existing pile P with all the holding claws 15 and 25 as shown in FIG. 4 (D).

After holding the pile work device A on the existing pile by the second holding mechanism 20, as shown in FIG. 4 (E), the opening / closing cylinder 13 of the first holding mechanism 10 is operated and the holding claw 15 is attached to the existing pile. It is located above the upper end of P and stored under the support 11.

When the cylinder 7 is operated again and the rod 7a is retracted, the main body frame 1 advances as shown in FIG. 4 (F), and the pile working device A moves forward by two pile widths.

By repeating the above operations, the pile work device A can move on its own on the existing pile P. You can also retreat by following the reverse procedure.

As described above, in the present embodiment, the arms 14 and 24 are pivotally moved about the shafts 11a and 21a at the center lower part of the support with respect to the existing pile rows, so that the holding claws 15 and 25 at the tips of the arms form the piles. Hold and release. Therefore, even if obstacles or the like project near the existing pile rows, the holding claws 15 and 25 can hold and release the upper ends of the existing piles P without colliding with the obstacles and the like.

Further, since it is not necessary to vertically move the entire holding claw when the pile working device moves forward and backward, the upper part of the device does not come into contact with these even when there is an obstacle above. In addition, it takes less time and effort to move the device forward, thus improving work efficiency.

Incidentally, FIG. 5 shows another pile working device B used in the present invention, and is a sectional front view corresponding to line II-II in FIG. 1 of the pile working device A.

The supporting portion 31 of the work apparatus B on the pile has a length shorter than that of the support body of the working apparatus A on the pile, and the rod side end portion of the holding claw opening / closing cylinder 33 is rotatable on both sides of the support portion 31. It is attached to. Other configurations and operations are similar to those of the work apparatus A on pile. According to the work apparatus B on piles, since the length of the support portion 31 is short, it is possible to hold and move the piles on a narrower work site.

(Effects of the Invention) As described above, according to the pile holding method and the moving method for the pile working apparatus according to the present invention, the existing pile can be held and released safely and reliably. Therefore, the working time on the pile can be shortened, the work efficiency can be improved, and the operation at a narrow construction site can be facilitated.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIGS. 1 to 3 show a pile working device used in the present invention, FIG. 1 is a side view of the pile working device, and FIG. 2 (A) is The front view, FIG. 2 (B) is a sectional front view taken along the line II-II of FIG. 1, FIG. 3 is a plan view in which the upper half of the pile working device is omitted, and FIGS. 4 (A) to 4 (F). Is an explanatory view showing the principle of gripping and moving on a pile, and FIG. 5 is a sectional front view of another working device on a pile used in the present invention and FIG.
The figure is an illustration of a conventional example. A ... Pile work device, P ... Existing pile 1 ... Main body frame, 3, 31 ... Support part 5 ... Front-rear moving body, 7 ... Front-rear moving cylinder 7a, 12a, 22a, 13a, 23a. Rod 10 …… First gripping mechanism, 11,21 …… Supporter 11a, 21a …… Shaft, 14,24 …… Arm 12,22,13,23 …… Cylinder 15,25 …… Clamping claw, 20 …… Second holding mechanism

Claims (3)

[Claims] 1. A work device on a pile row by sandwiching an upper end of an existing pile with a sandwiching claw at a front and rear end of a main body frame and a sandwiching claw of a front-rear moving body attached to a lower part of the main body frame so as to be movable back and forth with respect to the main body frame. Then, the holding claws of the front-rear moving body are rotated in a direction orthogonal to the pile row to release the sandwiched state of the piles, and the front-rear moving body is moved forward. After the movement, the upper and lower ends of the pile are again clamped by the clamping claws of the front-rear moving body. Next, the holding claws of the main body frame are rotated in a direction orthogonal to the pile row to release the holding state of the piles and the main body frame is advanced, and then the upper ends of the existing piles are again held by the holding claws. How to move the upper working device over the pile. 2. A pile holding mechanism in which a pair of holding pawl opening / closing mechanisms are attached to both sides of a support member of a work apparatus on a pile, and the holding pawls are attached to one end of the opening / closing mechanism so as to be rotatable in a direction orthogonal to a row of piles. 3. A pile clamping method in which a pair of clamping claw opening / closing mechanisms formed on both sides of the pile working device are operated to rotate the clamping claws in a direction orthogonal to the pile row to press the pile surface from both sides.