JPH076195B2 - Pile press-in / pull-out machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a pile press-fitting method that enables press-fitting and pulling-out of piles such as steel sheet piles used in various civil engineering and construction works in the vicinity of buildings, adjacent objects, and the like. Regarding the puller.

(Prior Art) When a pile such as a steel sheet pile is press-fitted into the ground, a pile press-fitting / extracting machine that runs on the pile is used. FIG. 14 shows a conventional pile press-in / pull-out machine, in which a mast 81 is erected on a saddle 80 on which a plurality of clamps 82 are vertically installed. The mast 81 can be moved back and forth by a lower slide frame 83, and a chuck arm 84 is attached to the tip end portion so as to be vertically movable. A chuck 85 is attached to the tip of the chuck arm 84. The vertical movement of the chuck arm 84 is the fluid pressure cylinder 86.
Done by.

The chuck 85 has a cylindrical outer shape, and is a press-fit pile.
The Pn is inserted through the chuck 85 and held between them. The chuck 85 is attached to the chuck arm 84 so as to be rotatable by 180 degrees, and the mast 81 can be appropriately rotated with respect to the saddle 80.

Next, the press-fitting operation of the piles of this pile press-fitting and extracting machine will be described.

The existing pile P is clamped by the clamp 82 to obtain a reaction force, and the pile Pm is press-fitted into the ground by connecting to the existing pile P at the tip. After that, the slide frame 83 is advanced by one pile width, the chuck 85 is rotated 180 degrees, the sandwiching direction of the pile is reversed, and a new pile Pn is sandwiched by the chuck 85 and connected in front of the existing pile Pm. Medium press fit.

When the pile Pn is press-fitted halfway, the press-fitting is stopped once. The clamped state of the existing pile P of the clamp 82 is released, and the clamp 82 together with the saddle 80 is lifted above the existing pile P. Then, the saddle 80 is advanced and the clamp 82 is advanced by one pile width.

After this, the clamp 82 is lowered and the existing piles Pm, P, ... Are again gripped to secure the reaction force. Then, the chuck 85 is operated to completely press-fit the pile Pn which is being press-fitted. By repeating this operation, the piles are continuously pressed.

FIG. 15 shows the state of construction as described above, in which the adjacent piles P, P are continuously press-fit with their web portions alternately facing in opposite directions.

(Problems to be Solved by the Invention) In the conventional device, the chuck has a cylindrical shape, and the chuck has a large outer diameter because the chuck needs to have a diameter such that the length between grips, that is, the entire pile width can be inserted. Therefore, when the pile is press-fitted at the construction site so as to approach an adjacent object such as a structure, the distance between the adjacent object is at least the outer diameter of the chuck, which causes a limitation in the adjacent construction of the adjacent object.

Therefore, in the prior art, the degree of freedom in design such as the improvement of the building coverage ratio and the utilization of the effective space are limited. In particular, in the case of a lightweight steel sheet pile in which the web portions of all the steel sheet piles face the same direction, approach press-fitting to an adjacent object is possible and construction can be performed with a comparatively small bulk width as compared with the above case.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a device capable of approaching an adjacent object and performing press-fitting / pulling-out of a pile.

(Means for Solving the Problem) In the pile press-fitting / extracting machine of the present invention, a clamp is vertically provided on a lower portion of a saddle having a slide frame attached to the upper portion so as to be movable back and forth,
A turn frame is rotatably erected on the slide frame, a support cylinder is attached to the tip of the turn frame, and a cylinder is vertically movably fitted in the support cylinder. The chuck is attached via a rotating mechanism.In addition, a clamp is hung vertically on the lower part of the saddle that has a slide frame attached to the upper part so that it can move back and forth, and a turn frame is rotatably set up on the slide frame. At the same time, a support cylinder is attached to the tip of the turn frame, and a cylinder is movably fitted in the support cylinder in a rotationally restrained state, and at least one side surface is partially flat on the lower end portion of the cylinder. The formed chuck is attached via a rotation mechanism, and the support cylinder can be rotated via a support cylinder support rotatably attached to the tip of the turn frame. It is characterized in that the attachment was.

(Operation) The upper end of the existing pile, which is press-fitted close to the adjacent object, is clamped by the clamp under the saddle and the pile press-in / pull-out machine is erected on the existing pile.

The press-fitting pile is held by a chuck, brought close to the adjacent object and connected to the front end of the existing pile, and the cylinder at the tip of the turn frame is lowered to lower the chuck and press-fit the pile completely into the ground.

After that, the slide base is moved forward to insert a new press-fitting pile into the chuck from above or from the side and hold it. Then, after the press-fitting pile is press-fitted to an appropriate depth by connecting to the existing pile at the front end, the press-fitting of the pile is temporarily stopped. Next, after releasing the holding state of the pile by the clamp and raising it to move it forward,
It descends and holds the existing pile again. After that, the chuck is lowered again and the press-fitting pile is press-fitted in proximity to an adjacent object or the like.

If necessary depending on the press-fitting location of the pile, the turn frame on the slide frame, the support cylinder, or the support of the support cylinder is rotated appropriately.

(Example) The Example of this invention is described based on drawing. 1 to 4 show an embodiment of a pile press-in / pull-out machine, in which a turn frame 3 is mounted on a saddle 2 and a cylinder 4 is provided at the tip of the turn frame 3 so as to be vertically movable. There is. A chuck 5 is attached to the lower end of the cylinder 4. In the lower part of the saddle 2, a plurality of clamps 6 for gripping an existing pile P such as a lightweight steel sheet pile and supporting the device 1 on the existing pile P are provided. The clamp 6 is provided on one end side of the saddle 2.

On the saddle 2, there is a slide frame 7 that can move in the front-back direction.
The turn frame 3 is erected on the slide frame 7. Therefore, the slide frame 7
Turn frame 3 and saddle 2 by moving back and forth
And move relatively back and forth.

The turn frame 3 can be swung within a predetermined range by a swivel mechanism 8 such as a hydraulic motor, so that the connection direction of the piles can be changed. The cylinder 4 is provided at the tip of the turn frame 3.

FIG. 4 shows the mounting structure of the cylinder 4. A support cylinder 9 is rotatably attached to the tip of the turn frame 3, and a cylinder 4 is vertically slidably inserted in the support cylinder 9. A gear 10 is provided on the outer peripheral surface of the middle portion of the support cylinder 9 so as to project. The turn frame 3 has a rotary drive mechanism 11 such as a hydraulic motor or an electric motor.
Is provided on the output shaft of the rotary drive mechanism 11.
Is attached and meshes with the gear 10 of the support cylinder 9. Therefore, when the rotary drive mechanism 11 is operated, the support cylinder 9 is rotated in the pile holding direction of the rotary chuck 5.

The cylinder 4 is in a rotation restrained state with respect to the support cylinder 9. In this embodiment, the engaging groove 13 is formed on the inner surface of the support cylinder 9.
And the engaging protrusion 4a is formed on the outer surface of the cylinder 4,
The rotation of the cylinder 4 is restricted by fitting the two together. In addition to this, a key groove may be formed on the outer surface of the cylinder 4 and the inner surface of the support cylinder 9, or the inner surface of the support cylinder 9 and the outer surface of the cylinder 4 may be formed into a non-circular shape such as a polygonal shape or an elliptical shape to restrain rotation.

By setting the cylinder 4 in the rotation restrained state with respect to the support cylinder 9 in this manner, the cylinder 4 rotates integrally with the support cylinder 9. The upper end of the rod 14 formed on the upper end of the cylinder 4 is fixed to the upper part of the support cylinder 9. Therefore, when the rod 14 expands and contracts due to the fluid pressure, the cylinder 4 moves to the support cylinder 9
The inside of the chuck 5 moves up and down, and the chuck 5 moves up and down accordingly.

When the cylinder 4 and the support cylinder 9 rotate integrally,
It is not necessary to provide the rotation restraint means as described above.

As shown in FIG. 2, the chuck 5 has a rectangular parallelepiped shape having an insertion hole for the press-fitting pile, and the outer side surface 5c of the chuck 5 is formed into a flat surface, and the amount of protrusion thereof is small. Therefore, the pile can be press-fitted / pulled out closer to the adjacent object A on the ground.

Further, the chuck 5 has a fixed claw 5a and a movable claw 5b arranged to face each other, and the fluid pressure cylinder 15 is driven to hold the pile.

Next, a method for press-fitting a pile such as a lightweight steel sheet pile using the above-described pile press-fitting / pulling machine will be described. In this embodiment, the piles P are all press-fitted in the same direction as shown in FIG. Therefore, it is not necessary to invert the chuck 5 for every press fitting according to the press fitting direction of the pile P.

As shown in FIG. 1, this construction is performed by installing the device 1 on the existing pile P.
Is fixed, the press-fitting pile Pm is gripped by the chuck 5, and the cylinder 4 is operated to start. In this case, chuck 5
As described above, since it has a rectangular parallelepiped shape and a small amount of outward projection, it is possible to approach the adjacent object A on the ground as much as possible, and the pile Pm can be press-fitted in this approaching state.

After the press-fitting of the pile Pm is completed, the slide frame 7 is slid for one pile, a new pile Pn is inserted into the chuck 5, is connected to the existing pile Pm, and is similarly press-fitted into the ground. When this pile Pn is press-fitted halfway, the press-fitting is temporarily stopped, the holding state of the pile P by the clamp 6 is released, and the cylinder 4 is operated to move the clamp 6 together with the saddle 2 above the pile. In this state, the saddle 2 is advanced by one pile. Next, the clamp 6 is lowered to grasp the existing piles Pm, P, P, and the piles Pn are completely pressed into the ground.

By repeating the above operation, as shown in FIG. 5, all the piles P can be brought close to the adjacent object A and continuously press-fitted. Further, the pulling out can be performed by the operation reverse to the above.

By bringing the pile P close to the adjacent object A in this manner, a wasteful space between the adjacent object A is reduced, and the space can be effectively utilized. In addition, the building coverage ratio will be improved and the degree of freedom in design will be expanded. Further, since the structure of the entire device is simple, the operation is reliable and the control is easy.

6 and 7 show a first embodiment of the present invention, in which the same elements as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.
In this embodiment, the outer portion of the chuck 5 is formed thicker than that in the above embodiment, and a cylinder 15 for pressing the movable claw 5b is attached to the thickened portion. Also in this embodiment, the outer side surface 5c of the chuck 5 is formed into a flat surface,
The amount of protrusion to the outside is small, and the same effect as in the above aspect can be obtained.

8 to 10 show a second embodiment of the book. In this embodiment, the support cylinder 39 has a quadrangular cross section and is fixedly attached to the tip of the turn frame 33. A cylinder 34 is vertically slidably inserted in the support cylinder 39.

A chuck 35 is formed at the lower end of the cylinder 34,
The chuck 35 is provided with a rotary drive mechanism 41 such as a hydraulic motor or an electric motor. A drive gear 42 is attached to the output shaft of the rotary drive mechanism 41, and meshes with a gear 43 provided around the lower end of the cylinder 34. Therefore, the rotary drive mechanism 41
When is operated, the chuck 35 rotates.

As described above, the cylinder 34 is in a rotation restrained state with respect to the support cylinder 39. This rotation restrained state may adopt the structure described in the above-mentioned embodiment, and if the cylinder 34 and the support cylinder 39 rotate integrally, it is not necessary to particularly take the structure for making the rotation restrained state.

The upper end of the rod 44 formed on the upper end of the cylinder 34 is fixed to the upper end of the support cylinder 39. Therefore, when the rod 44 expands and contracts due to the fluid pressure, the cylinder 34 moves up and down in the support tube 39, and the chuck 35 moves up and down accordingly.

This embodiment has a simpler structure than the above embodiments.

With reference to FIG. 11, the corner press-fitting of the pile using the pile press-fitting and extracting machine of the present embodiment will be described.

The press-fitting pile Pr is held by the chuck 35, and is positioned at right angles to the tips of the linearly press-fitting piles P, P. After that, pile Pr is press-fitted into the ground in the same manner as above (Fig. (A)). Next, similarly, the press-fitting pile Ps is completely press-fitted by connecting to the pile Pr (the same (b)).
Figure).

As described above, in each of the above embodiments, the rotary drive mechanism 11,
The chucks 5 and 35 are rotated by 41 to adjust the connection angle between the press-fitted pile and the already-press-fitted pile. And in each of the above embodiments, in order to further finely adjust the angle when the piles are connected to each other, as shown in FIG. 12, the support cylinder support 9a and the rotation mechanism 9b are used.
May be provided between the turn frame 3 and the support cylinder 9. As a result, in each of the above-described embodiments, the connection angle and the position of the support cylinder 9 can be adjusted more delicately.

FIG. 13 is a plan view of another embodiment of the chuck among the above embodiments. The chuck body 42 of this chuck 40
Is a planar U-shape with a front end cut out to provide an opening 47, and a fixed claw 43 is formed inside the front end.

Then, while forming an insertion portion 44 of the lightweight steel sheet pile P between the fixed claw 43 and the chuck body 42, a holding cylinder 45 is provided in the chuck body 42, and a movable claw 46 is provided at the tip of the holding cylinder 45. I am configuring.

The movable claw 46 is arranged at a position facing the fixed claw 43, and holds the lightweight steel sheet pile P inserted in the insertion portion 44 between the movable claw 46 and the fixed claw 43.

Thus, the chuck 40 is much smaller and the outer surface 42
Since c is formed flat, the amount of protrusion is small, and the lightweight steel sheet pile P can be press-fitted closer to a building or the like.

When a new lightweight steel sheet pile P is inserted into the chuck 40, it is not necessary to lift it up above the chuck by a crane or the like as in the conventional case, and the lightweight steel sheet piles P are preliminarily arranged side by side on the construction site in a vertical line and sequentially. It becomes possible to insert it into the chuck 40 for construction. Therefore, there is no waste in the crane lifting work, and the construction time can be shortened.

Even when the lightweight steel sheet pile P is pulled out, the chuck 40 is not lifted without lifting the lightweight steel sheet pile P in the chuck with a crane or the like.
It can be quickly removed from the opening 7.

Further, the chuck 40 can be separated from the lightweight steel sheet pile P during the drawing of the lightweight steel sheet pile P. Therefore, the remaining extraction work during the extraction is performed by a crane or the like, and during that time, the chuck 40 can prepare for the next extraction work of the lightweight steel sheet pile P, so that the construction time can be shortened.

When there is an obstacle in the lateral direction of the chuck 40, the lightweight steel sheet pile P can be inserted from above by a crane or the like. In this way, the chuck 40 is used to insert the lightweight steel sheet pile P.
The insertion method can be selected from above or sideways, and the insertion method can be selected according to the situation at the site.

As described above, in each of the above-described embodiments, the turn frame and the chuck can be rotated easily and quickly, so that the turn frame and the chuck can be easily press-fitted even in a curve or a corner.

Further, in each of the above-described embodiments, the support cylinder support, the rotating mechanism, and the chuck having one open side may be appropriately selected and used in combination.

(Effect of the invention) As described above, in the pile press-fitting / pulling machine of the present invention, the effective space is expanded such as the improvement of the building coverage ratio, and the fine adjustment of the angle when the piles are connected in close proximity to the adjacent object. It is possible to press-fit while doing so, and the degree of freedom in construction increases.

Further, the chuck can be installed close to the adjacent object without coming into contact with the adjacent object, and the structure is simple, so that the control and maintenance are easy. Further, by selecting the support cylinder support, the rotation mechanism, and the chuck with one open, the work efficiency is further improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a side view of one embodiment of a pile press-fitting / pulling machine, FIG. 2 is the same plan view, FIG. 3 is the same front view, and FIG. Partial cross-sectional view, FIG. 5 is a plan view showing an example of press-fitting a pile by the pile press-fitting / pulling machine of the present invention, FIG. 6 is a side view of a first embodiment of the pile press-fitting / pulling machine, and FIG. 7 is the same plan view. FIG. 8 is a side view of a second embodiment of the pile press-fitting / pulling machine, FIG.
The figure is the same plan view, FIG. 10 is the same front view, and FIG. 11 (a) (b).
Is a plan view showing a press-fitting example of the same corner, FIG. 12 is a plan view of another embodiment of the rotating mechanism and the support cylinder support, FIG. 13 is a plan view of another embodiment of the chuck, and FIG. FIG. 15 is a side view of a conventional pile press-fitting and extracting machine and FIG. 15 is a plan view showing an example of press-fitting. 1,31 …… Pile press-in / pull-out machine, 2 …… Saddle 3,33 …… Turn frame 4,34 …… Cylinder 5,35,40 …… Chuck 5c …… Side, 6 …… Clamp 7 …… Slide frame , 9, 39 …… Support tube P, Pn, Pm …… Pile, A …… Adjacent object

Continuation of the front page (56) Reference JP-A-63-35917 (JP, A) Actually developed Shou 60-165534 (JP, U) JP-B 40-21452 (JP, B1) JP-B 59-25049 (JP , B2)

Claims (4)

[Claims] 1. A clamp is vertically provided on a lower portion of a saddle having a slide frame attached to the upper portion so as to be movable back and forth, a turn frame is rotatably erected on the slide frame, and a support cylinder is provided at a tip of the turn frame. A pile press-fitting / extracting machine in which a cylinder is vertically movably fitted in the support cylinder, and a chuck is attached to the lower end of the cylinder via a rotating mechanism. 2. A clamp is vertically provided on a lower portion of a saddle having a slide frame attached to the upper portion so as to be movable back and forth, a turn frame is rotatably erected on the slide frame, and a supporting cylinder is provided at a tip of the turn frame. Is mounted, and the cylinder is fitted in the support cylinder in a rotationally restrained state so as to be vertically movable,
A pile press-fitting / extracting machine, wherein a chuck, at least a part of one side surface of which is formed into a flat surface, is attached to a lower end portion of the cylinder through a rotating mechanism. 3. The pile press-fitting / extracting machine according to claim 1, wherein said support cylinder is rotatably mounted via a support cylinder support member rotatably mounted on the tip of the turn frame. 4. The pile press-fitting / pulling machine according to claim 1, 2 or 3, wherein an opening portion is formed at one end of the chuck.