JPH0632990Y2 - Chuck mechanism for pile press-in / pull-out machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a chuck mechanism of a pile press-fitting / pulling machine which can be operated in the vicinity of an adjacent object at a work site during press-fitting / pulling-out work of a steel sheet pile.

(Prior Art) As shown in FIG. 12, a chuck mechanism C of a conventional pile press-fitting / pulling machine has a substantially cylindrical shape and has a pile insertion hole in the center thereof, and a web portion of a steel sheet pile P. 40 is gripped and press-fitting or withdrawing is performed.

Therefore, a new steel sheet pile P must be thrown in from above when the pile press-fitting is continuously performed, and a scaffolding such as a step is required to guide the steel sheet pile P manually.
Further, since the diameter of the chuck C is larger than the depth H of the steel sheet pile P, it is necessary to project laterally more than the existing steel sheet pile array to make a large gap between the steel sheet pile P and the adjacent object S.

(Problems to be solved by the invention) Thus, in the chuck mechanism C of the conventional pile press-fitting / pulling machine,
It was not possible to press fit the steel sheet pile P close to the adjacent object S at the work site.

When the steel sheet pile P is built in the chuck mechanism C,
The steel sheet pile P has to be lifted up by a crane or the like, and an operator must ride on a scaffolding such as a step to manually insert the sheet pile from above the chuck mechanism C, which causes a loss of working time and is dangerous.

(Means for Solving the Problems) In order to solve the above problems, the present invention has a mast erected on the upper part of a saddle on which a clamp is vertically installed so as to be movable back and forth and rotatable.
In the chuck mechanism of a pile press-fitting / extracting machine in which a chuck mechanism is attached to the front end of the mast so as to be movable up and down, a sandwiching portion of the pile having an opening on one side is pivotable in the vertical axis direction at the front end of the mast, and a horizontal axis is provided. It is characterized in that it can be rotated in any direction.

(Action) The pile press-in / pull-out machine is installed on the existing steel sheet pile by sandwiching the flanges of the steel sheet pile that are connected by the clamps at the bottom of the saddle. Next, the steel sheet pile is loaded from the side opening portion or the upper side of the chuck mechanism, the flange portion of the steel sheet pile is sandwiched, and the steel sheet pile is continuously press-fitted into the ground into the existing steel sheet pile.

When the press-fitting of the first steel sheet pile is completed, the clamping state of the steel sheet pile by the chuck mechanism is released to move the mast in the traveling direction, and the chuck mechanism is horizontally rotated to clamp the new steel sheet pile. And then press-fit the steel sheet pile.

During the press-fitting operation, the press-fitting is temporarily stopped, the clamp is released, and the clamp is lifted together with the saddle to move forward by one steel sheet pile. Then, the clamp is lowered to re-hold the existing steel sheet pile, and the chuck mechanism completely press-fits the steel sheet pile in the middle of press-fitting.

In addition, the problem can be solved by rotating the mast regardless of whether the obstacle such as the wall is in the left or right direction with respect to the traveling direction of the pile press-in / pull-out machine.

Thus, the chuck mechanism pivots with respect to the vertical axis and rotates with respect to the horizontal axis as needed, and the clamp pivots appropriately with respect to the vertical axis. Therefore, curve press fitting and corner press fitting can be performed easily.

By repeating the above operation, the pile press-in / extractor moves while press-fitting the steel sheet pile. Note that the steel sheet pile is pulled out in the reverse order of the above.

Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a pile press-fitting / pulling machine equipped with the present embodiment, FIG. 2 is a front view of the same, FIG. 3 is a perspective view of a chuck mechanism, and FIGS.

The chuck mechanism 15 of the pile press-fitting / pulling machine according to the present embodiment is the first
As shown in the figure, the pile press-fitting / pulling machine 1 is attached to the front end of the mast 10 so as to be vertically movable.

In the pile press-fitting / pulling-out machine 1, a clamp 2 is rotatably provided on a saddle 5, and the mast 10 is rotatably mounted on the saddle 5.

The clamp 2 has a fixed claw 3a on the holding body 3 and a movable claw 3b which is moved forward and backward by a cylinder mechanism 3c. The clamp 2 is provided on the lower part of the saddle 5 so as to be pivotable and movable left and right with respect to a vertical axis, and as shown in FIG. 5, the flange portion of the two steel sheet piles P is centered around the grip G of the steel sheet pile P. 20 can be clamped at the same time.

The clamp 2 may be fixed to the lower portion of the saddle 5 and may not move left and right.

The saddle 5 is internally provided with a cylinder mechanism 6 as a means for moving the mast 10 back and forth, a swing motor 7 of the clamp 2 and a cylinder mechanism 8 for moving left and right.

The mast 10 has a slide base 10a formed at the bottom,
The rod of the cylinder mechanism 6 is fixed to the lower end of the slide base 10a. Further, the fitting groove 1 is provided at the front end of the mast 10.
2a is formed, and the arm 13 is fitted in the fitting groove 12a by the lifting cylinder 12 so as to be vertically slidable.

A chuck mechanism 15 is attached to the tip of the arm 13 via a rotary motor 14. This causes the chuck mechanism 15 to rotate with respect to the horizontal axis as described later (in the direction of the arrow in FIG. 1).

Reference numeral 11 in the drawing is a motor for rotating the mast 10 by 180 degrees. The clamp 2 is formed on one side edge of the lower portion of the saddle 5, and the saddle 5 is asymmetrical. Therefore, as shown in FIGS. 6 and 9, the mast 10 is different depending on whether the adjacent object S is on the right side or the left side. This is because it is necessary to rotate 180 degrees.

As shown in FIGS. 1 and 3, the chuck mechanism 15 is provided with a pair of upper and lower sandwiching bodies 16 and a rotary motor 17 between the upper and lower sandwiching bodies 16 so that the sandwiching body 16 extends in the horizontal direction with respect to the vertical axis. It is configured to be rotatable in the direction of the arrow in FIG. It should be noted that each holding body 16 has the same structure as the holding body 3 of the clamp 2 described above.
A fixed claw 16a and a movable claw 16b are provided.

In addition, the chuck mechanism 15 of this embodiment has an open portion 15a on the side.
Is formed, the steel sheet pile P can be thrown in from the lateral direction. Therefore, work is simplified without the need for scaffolding such as steps. Further, the chuck mechanism 15 is configured to be rotatable 180 degrees in the vertical direction with respect to the horizontal axis by the rotation motor 14.

In the present embodiment, as described above, the pair of sandwiching bodies 16 are provided above and below the chuck mechanism 15, but the sandwiching bodies 16 may be formed on only one of the upper and lower sides.

Next, the operation of the chuck mechanism 15 of the pile press-fitting / pulling machine having the above-described configuration will be described using the pile press-fitting / pulling machine 1.

First, the pile press-fitting / pulling machine 1 is installed on the existing steel sheet piles P1 to P4 as shown in FIGS. 4 and 5, and the flange portion 2 of each steel sheet pile is installed.
Clamp 0 with clamp 2. In this state, the chuck mechanism 1
5, the flange portion 20 of the steel sheet pile P5 is sandwiched between the steel sheet pile P and the steel sheet pile P
Press into the ground while connecting to 4.

Next, after operating the cylinder mechanism 6 in the saddle 5 to move the slide base 10a forward by one sheet pile, the rotary motor 17 is operated to rotate the grip body 16 horizontally with respect to the vertical axis. A new steel sheet pile P6 is clamped, connected to the steel sheet pile P5, and pressed into the ground.

During the press-fitting of the steel sheet pile P6, the press-fitting is temporarily stopped and the clamp 2
Release the pinched state of the steel sheet pile. Then, the lifting mechanism 12 moves the clamp 2 together with the saddle 5 to above the existing steel sheet pile array.

Then, as shown in the direction of the arrow in FIG.
Is operated to move the clamp 2 together with the saddle 5 forward by the width of the steel sheet pile. After that, the clamp 2 is moved downward, and the steel sheet pile P is clamped by the clamp 2 as shown in FIGS. 7 and 8.
Hold 2 to P5.

In addition, each time the saddle 5 advances by one sheet pile, each clamp 2
The angle of the flange portion 20 of the steel sheet pile P sandwiched by is different.
Therefore, the turning motor 7 of the clamp 2 is appropriately operated to match the holding angle of the holding body 16 with the angle of the flange portion 20.

By repeating the above operation, the pile press-fitting / extracting machine 1 equipped with the chuck mechanism 15 of the present embodiment advances on the steel sheet pile row while press-fitting the steel sheet pile P. The method of pulling out the steel sheet pile P is also possible by the procedure reverse to the above.

As shown in FIGS. 4 to 8, the chuck mechanism 15 is accommodated in the depth H of the steel sheet pile P, that is, in the abdomen E of the steel sheet pile, and does not project laterally. Similarly, the clamp 2 is also housed in the abdomen E of the steel sheet pile and does not project laterally, and since it is attached to the side end of the saddle 5, the distance between the steel sheet pile P and the adjacent object S is reduced, and It is possible to perform press-fitting / pulling-out work of steel sheet piles in a zero state. Further, since the clamp 2 is a reaction force steel sheet pile and holds two steel sheet piles at the same time, a sufficient reaction force can be secured.

According to the pile press-fitting / pulling machine 1 equipped with this embodiment,
As shown in the drawing, even when the adjacent object S is on the opposite side to the example shown in FIG. 4, the same work can be performed by rotating the mast 10 by 180 degrees.

Further, the chuck mechanism 15 can be pivoted with respect to the vertical axis and rotated with respect to the horizontal axis as necessary, and the clamp can be appropriately pivoted and moved left and right with respect to the vertical axis by hanging the saddle. Easy corner press-fitting.

This corner press fit is performed by rotating the mast 10 and the chuck 1.
It becomes possible by combining with the turning of 5. (First
(See Fig. 0 and Fig. 11) (Effect of the Invention) As described above, according to the chuck mechanism of the pile press-fitting / extracting machine of the present invention, the steel sheet pile can be loaded from the side direction, and the scaffolding such as steps becomes unnecessary. Further, even if there is an adjacent object on either side in the left-right direction with respect to the traveling direction, the steel sheet pile can be clamped along the adjacent object without the chuck mechanism contacting the adjacent object. Therefore, there is an effect that linear press-fitting, corner press-fitting, or curve press-fitting and pulling out of these steel sheet piles can be performed quickly and reliably.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a pile press-in / pull-out machine equipped with this embodiment, and Fig. 2 is a front view of the same.
FIG. 3 is a perspective view of the chuck mechanism, FIGS. 4 to 9 are operation explanatory views, FIGS. 10 and 11 are corner press-fitting explanatory views, and FIG. 12 is an explanatory view of a conventional example. 1 ... Pile press-in / pull-out machine, 2 ... Clamp 3 ... Clamping body, 5 ... Saddle, 7 ... Rotating mechanism, 8 ... Left and right moving mechanism, 10 ... Mast, 11, 17 ... Rotating mechanism, 12 ... Mechanism, 13 ... Arm 15 ... Chuck mechanism, 16 ... Clamping body 20 ... Flange part, 40 ... Web part P ... Steel sheet pile, H ... Depth, E ... Abdomen S ... Adjacent object

Claims (2)

[Scope of utility model registration request] 1. A chuck mechanism of a pile press-fitting / extracting machine in which a mast is erected vertically and rotatably on a saddle upper part where a clamp is vertically installed, and a chuck mechanism is vertically movable on a front end of the mast. A chuck mechanism for a pile press-fitting / extracting machine, wherein a sandwiching portion of a pile provided with an opening portion is formed at one end, and the front end of the mast is configured to be pivotable in a vertical axis direction and rotatable in a horizontal axis direction. 2. The chuck mechanism of a pile press-fitting / extracting machine according to claim 1, wherein the sandwiching portion of the pile is formed vertically.