JPH0663231B2 - Pile press-in / pull-out machine and pile press-in / pull-out method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pile press-fitting / pulling machine and a press-fitting / pulling-out method capable of working in the vicinity of an adjoining object at a work site in press-fitting / pulling-out work of a steel sheet pile.

(Prior Art) As shown in FIG. 12, the clamp 32 of the conventional pile press-fitting / pulling machine grips the web portion 40 of the steel sheet pile P to secure the reaction force. In addition, when pressing or pulling out, the web portion 40 of the steel sheet pile P was gripped by the chuck C. Therefore, when gripping the steel sheet pile P, the cylinder mechanism 33, the main body frame A, the chuck C, and the like protruded laterally more than the existing steel sheet pile row. Moreover, each clamp 32 is larger than the depth H of the steel sheet pile P,
Since it did not fit in the abdomen E of the above and projected laterally, it was necessary to make a large gap between the steel sheet pile P and the adjacent object S.

(Problems to be Solved by the Invention) As described above, in the conventional pile press-fitting / pulling machine, it was not possible to press-fit in the vicinity of the adjacent object S at the work site. Further, since each clamp holds one reaction force steel sheet pile, the reaction force is limited. Further, when the steel sheet pile P is built in the chuck C, the steel sheet pile P has to be lifted up by a crane or the like and inserted from above the chuck C, which causes a loss of working time and a danger.

(Means for Solving the Problems) In order to solve the above problems, in a pile press-fitting / extracting machine of the present invention, a mast is erected on the upper part of a saddle so as to be movable back and forth and rotatable, and is clamped on the lower part of the saddle so as to be rotatable. While vertically erected, in front of the mast, a chuck having a sandwiched portion of a pile with one side open, characterized in that it is configured to be rotatable with respect to the vertical axis and rotatable with respect to the horizontal axis, The pile press-in / pull-out method is to clamp the flange part of the existing pile with a clamp and place the pile press-in / pull-out machine on the pile, then hold the flange part of the pile with a chuck and press it in, and then hold the next pile with the chuck. Then, it is connected to the press-fitted pile and press-fitted halfway, and once the press-fitting is stopped to release the clamped state of the clamp, the clamp is moved upward to move forward by one pile, and then moved downward to move the existing pile. Re-hold the flange of the It is characterized by the completely pressed.

(Operation) Hold the flange part of the steel sheet pile with the clamp at the bottom of the saddle and install the pile press-in / pull-out machine on the existing steel sheet pile. Next, the steel sheet pile is put in from the side opening portion or the upper side of the chuck, and the flange portion of the steel sheet pile is sandwiched and pressed into the ground continuously with the existing steel sheet pile.

Then, the mast is moved in the traveling direction, the chuck holds the flange portion of the new steel sheet pile, and the steel sheet pile is subsequently press-fitted. 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 steel sheet pile in the middle of press-fitting is completely press-fitted.

In the press-fitting operation, the chuck pivots with respect to the vertical axis and rotates with respect to the horizontal axis as necessary, 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.

(Example) An example of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a pile press-fitting / extracting machine, FIG. 2 is a front view of the same, FIG. 3 is a perspective view of a chuck, and FIGS. 4 to 9 are operation explanatory views.

As shown in FIG. 1, the pile press-fitting / extracting machine according to the present embodiment includes a saddle 5 having a clamp 2 vertically provided on a lower portion thereof, and a mast 10 provided on the upper portion of the saddle 5 so as to be slidable back and forth and rotatable.
The mast 10 comprises a chuck 15 attached to the front end of the mast 10 so as to be vertically movable.

The clamp 2 includes a fixed claw 3a and a cylinder mechanism 3 in a holding body 3.
A movable claw 3b that moves forward and backward with c is provided. This 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 2 of the two steel sheet piles P with the grip G of the steel sheet pile P substantially at the center.
You can hold 0 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 15 is attached to the tip of the arm 13 via a rotary motor 14. This causes the chuck 15 to rotate with respect to the horizontal axis as will be described later (direction of 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 15 is provided with a pair of upper and lower holding bodies 16 and a rotary motor 17 between the upper and lower holding bodies 16 so that the holding body 16 can move in a horizontal direction with respect to a vertical axis ( It is configured to be rotatable in the direction of the arrow in FIG. 2). Each holding body 16 is provided with a fixed pawl 16a and a movable pawl 16b inside similarly to the holding body 3 of the clamp 2.

The chuck 15 has an opening 15a formed laterally so that the steel sheet pile P can be loaded laterally. Therefore, work is simplified without the need for scaffolding such as steps. Further, the chuck 15 is rotated 180 degrees in the vertical direction with respect to the horizontal axis by the rotation motor 14.
It is a structure that can be rotated once.

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

Next, an example of a steel sheet pile press-in / pull-out method using the pile press-in / pull-out machine 1 having the above-described configuration will be described. First, the pile press-in / pull-out machine 1
As shown in FIG. 5 and FIG. 5, it is installed on the existing steel sheet piles P1 to P4, and the clamp 20 holds the flange portion 20 of each steel sheet pile. In this state, the flange portion 20 of the steel sheet pile P5 is held by the chuck 15 and press-fitted into the ground while being connected to the steel sheet pile P4.

Next, the cylinder mechanism 6 in the saddle 5 is operated to move the slide base 10a forward by one steel sheet pile, and a new steel sheet pile P6 is held by the chuck 15 and connected to the steel sheet pile P5 to press it 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 holding 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 FIG. 6, the cylinder mechanism 6 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, as shown in FIG.
As shown in FIG. 8, the clamp 2 holds the steel sheet piles P2 to P5.

Also, each time the saddle 5 advances by one sheet pile, the angle of the flange portion 20 of the sheet pile P held by each clamp 2 changes. 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 / pulling-out machine 1 of this embodiment advances the steel sheet piles P while press-fitting them. The method of pulling out the steel sheet pile is also possible by reversing the above procedure.

As described above, according to the pile press-fitting / pulling machine and the press-fitting / pulling-out method of the present embodiment, since the clamp 2 holds the flange portion of the steel sheet pile P, each holding body 3 is within the depth H of the steel sheet pile P, that is, the steel sheet pile. It fits inside the abdomen E and does not project laterally. Moreover, since the clamp 2 is attached to the side end of the saddle 5, the distance between the steel sheet pile P and the adjacent object S can be reduced, and the press-in / pull-out operation of the steel sheet pile can be performed in a state of almost zero. Also clamp 2
Holds two steel sheet piles as reaction force steel sheet piles at the same time, so that a sufficient reaction force can be secured.

The pile press-fitting / pulling machine 1 of this embodiment performs the same work by rotating the mast 10 by 180 degrees even when the adjacent object S is on the opposite side to the example shown in FIG. 4 as shown in FIG. be able to.

Further, since the clamp 2 can be moved left and right with respect to the saddle 5, curve press fitting and corner press fitting can be smoothly performed.

Corner press-fitting is possible by combining the rotation of the mast 10 and the turning of the chuck 15. (Refer to FIG. 10 and FIG. 11) (Effect of the Invention) As described above, according to the pile press-in / pull-out machine and the pile press-in / pull-out method of the present invention, the steel sheet pile can be press-fitted along the adjacent object and pulled out. . Further, since each clamp simultaneously holds the web portions of the two steel sheet piles, the reaction force becomes strong. 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, Fig. 2 is a front view of the same, Fig. 3 is a perspective view of a chuck, and Figs. Explanatory drawing, FIG. 10 and FIG. 11 are explanatory views of corner press-fitting, and FIG. 12 is an explanatory view of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Pile press-in / pull-out machine, 2 ... Clamp 3 ... Clamping body, 5 ... Saddle 7 ... Swivel mechanism, 8 ... Left / right moving mechanism 10 ... Mast, 11, 17 ... Rotating mechanism 12 ... Lifting mechanism, 13 ... Arm 15 ... Chuck, 16 ... Holding body 20 ... Flange portion, 40 ... Web portion P ... Steel sheet pile, H ... Depth, E ... Abdomen S ... Adjacent object

Claims (3)

[Claims] 1. A mast is erected on the upper part of the saddle so as to be movable back and forth and rotatable, and a pivotable clamp is vertically provided on the lower part of the saddle, and an opening is provided on one side in front of the mast. A pile press-fitting / extracting machine in which a chuck having a pile holding portion at one end is configured to be rotatable about a vertical axis and rotatable about a horizontal axis. 2. The pile press-fitting / extracting machine according to claim 1, wherein the holding portions of the pile are formed above and below the chuck. 3. A clamp configured at the lower part of the saddle holds a flange portion of an existing pile to place a pile press-fitting / extracting machine on the pile, and then a chuck holds the flange portion of the pile to press-fit the pile. After sandwiching the flange part of the next pile and connecting it to the press-fitting pile by press-fitting it halfway, once stopping the press-fitting to release the clamped state of the clamp, raising the clamp and advancing it by one pile width, Lower it and hold the flange of the existing pile again,
A method for press-fitting and withdrawing a pile, in which the pile in the process of press-fitting is completely press-fitted.