JPH02282515A - Pile press fit drawing machine and press fit drawing method of pile - Google Patents

Abstract

PURPOSE:To improve the safety and the working efficiency by mounting a clamp by which a ready-made pile is gripped on the lower part of a saddle so as to freely attach to and be detached from it, by forming a mast on the saddle so as to move forward and backward, and to rotate, and by providing a chuck on the front end of the mast so as to freely move vertically. CONSTITUTION:With a chuck C in front of a mast 5 turned backward horizontally by 180 deg., a clamp 2a on a pile P1 is gripped and is drawn upward. With the chuck C turned forward, the clamp 2a is moved to the foremost end of a pile press fit drawing machine 1, so as to be inserted into and is gripped on the upper end of a pile P5. The mast 5 being progressed by the pile width, and a new pile P6 being gripped by the chuck C, the chuck C is lowered so as to press-fit the pile P6, and the press-fitting is stopped in the middle of the process, so as for a saddle 3 to progress by the pile width. A sliding part 4 of the front end of the saddle 3 is fitted to a fitting groove 6 of the clamp 2a by which the pile P5 is gripped, and with the saddle 3 being progressed, the pile 6 for which press-fitting is stopped in the middle of the process, is press-fitted completely into the ground.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention allows each clamp to be attached and detached from the saddle, so that piles can be press-fitted and pulled out while moving on the existing pile row by itself without moving the pile press-in/pull machine upward. This article relates to a pile press-in/extraction machine and a pile press-in/extraction method.

(Conventional technology) Steel sheet piles and steel pipe piles used in various civil engineering works.

When press-fitting and pulling out piles such as steel pipe sheet piles into the ground, a pile press-in and pull-out machine that can move on its own on a row of piles is used.

In the conventional pile press-in/extraction machine 71, each clamp 62 is integrally formed at the lower end of the saddle 61, as shown in FIGS. 15 to 18. Therefore, each clamp 62 could not be removed from the saddle 61 during work.

A chuck 60 for gripping a stake was configured at the front end of a mast 65 on this saddle 61.

Based on FIGS. 15 to 18, the conventional pile press-in/extraction machine 7
The method for press-fitting piles using 1 will be explained.

As shown in FIG. 15, the pile press-in/extraction machine 71 is placed on the existing pile, and the existing piles P22 to P24 are gripped with the clamp 62,
The new pile P20 is gripped by the chuck 60 and press-fitted halfway into the ground, and the press-fitting is temporarily stopped. In this state, mast 6
5 and the clamp 62 is raised. (See FIG. 16) Then, as shown in FIG. 17, the saddle 61 is advanced by the distance of the pile. After the movement, as shown in FIG. 18, the clamp 62 is lowered together with the mast 65, clamping the existing piles P21 to P23, and completely press-fitting the pile P20 that is being press-fitted.

Furthermore, when the above-described pile press-in/extractor 71 moves on its own on an existing pile row, an attachment must be attached to the chuck 60.

(Problems to be Solved by the Invention) As mentioned above, in the conventional pile press-in/extraction machine, the clamp is integrated with the main body, so when moving the machine, -
I had to grab the book pile with a chuck and raise the bottom end of the clamp above the top of the existing pile.

However, when the distance between the top of the pile and the bottom of an obstacle is limited, such as when working under a bridge, there is a drawback that when the machine is raised, it comes into contact with the obstacle and cannot be moved.

Furthermore, if the entire machine was moved upward, the center of gravity would be high and unstable, which was dangerous. Furthermore, if you get caught in a pile during press-in in soft ground and apply the full weight of the pile press-in/extraction machine to this pile, the supporting force may be insufficient and the pile may sink and the main body may not be lifted. Work such as welding and connecting to existing piles was also required.

Since the clamp and saddle are integrated, a crane or large transport vehicle capable of lifting the entire machine is required for transporting and unloading, and an attachment must be attached to the chuck when moving over the existing pile rows. Problems such as a decrease in work efficiency also arose due to the need to operate the machine.

This invention solves the above problems, and a pile press-in and pull-out machine and a pile press-in and pull-out method that enable each clamp to be attached and removed from the pile press-in and pull-out machine and move forward and backward on a row of piles without raising or lifting the pile press-in and pull-out machine. The purpose is to provide

(Means for Solving the Problems) A pile press-in/extraction machine of the present invention is configured such that a clamp for gripping an existing pile is detachably attached to the lower part of a saddle, a mast is configured to be movable back and forth and rotatable on the saddle, and It is characterized by a chuck installed at the front end of the mast that can be moved up and down.

In addition, the pile press-in and pull-out method involves installing a pile press-in and pull-out machine on the existing pile row, gripping the clamp detached from the saddle with a chuck, and horizontally rotating the mast to move the clamp to the top end of the pile in the advancing direction. After the saddle is gripped, the saddle is refitted to the clamp in the process of moving the mast forward to grip a new pile in the chuck and press-fitting or pulling it out.

(Operation) Grasp the top end of the pile with a clamp, set up the pile press-in/extraction machine on the desk, and press-fit the new pile into the front end of the pile row.

Move the saddle forward and separate the clamp at the rear end of the saddle.

Next, the mast is rotated 180 degrees, the separated clamp is gripped by a chuck, and pulled out upward. This clamp is inserted into the upper end of the pile at the forefront of the pile press-in/extraction machine, and the pile is gripped again.

Then, move the mast on the saddle forward, have the chuck grip the new pile, and press it halfway into the ground. In this state, the saddle is moved forward by the pile width to slidably fit the slide portion at the front end of the saddle into the fitting groove of the clamp. Then, the piles that are being pressed in are completely pressed into the ground. To pull out the piles, follow the procedure in reverse order.

In addition, when moving on a desk by itself, a clamp is attached to the upper end of the pile in the traveling direction, and the saddle is sequentially fitted to the upper part of this clamp.

(Example) Embodiments of the present invention will be described with reference to the drawings.

A first embodiment of the pile press-in and pull-out machine is a pile press-fit and pull-out machine 1 for steel pipe piles or steel pipe sheet piles, as shown in FIG.

In this embodiment, a clamp mechanism 2 is provided below the saddle 3, a mast 5 is configured to be movable back and forth and rotatable on the saddle 3, and a chuck C is provided at the front end of the mast 5.

As shown in FIG. 2, the clamping mechanism 2 includes a gripping body 7 whose surface is formed so as to be able to come into close contact with the inner periphery of the steel pipe sheet pile P, and a pressing body 7a attached to the gripping body 7 via a cylinder mechanism 8.

A fitting groove 6 is formed on the upper part of the gripping body 7, and a slide part 4 is formed on the upper part of the saddle 3 to be slidably fitted into the fitting groove 6. A plurality of slide portions 4 and a plurality of fitting grooves 6 may be formed.

The slide portion 4 and the fitting groove 6 can be separated as necessary. Further, a brake mechanism such as a cylinder mechanism may be provided between the saddle 3 and the grip body 7. According to this, even if force is applied in the front and back direction during work, the saddle 3
movement is prevented.

Therefore, according to the above configuration, the clamp 2 and the mast 5 can be lifted and loaded separately, so that they can be transported, loaded and unloaded using a smaller crane or transport vehicle.

Furthermore, the mast 5 is provided with a rotation mechanism 40 inside, and is configured to be rotatable horizontally by 180 degrees on the saddle 3. Furthermore, the chuck C is
is configured to be movable up and down.

An embodiment of a method for press-fitting piles using the pile press-fitting and extracting machine 1 will be described with reference to FIGS. 5 to 9.

FIG. 5 shows a state in which a new pile P5 has been press-fitted by the pile press-fitting/extracting machine 1 installed on the piles P2 to P4. Pile P
The rearmost clamp 2a on the top 1 is detached from the saddle 3.

Next, as shown in FIG. 6, the one-rotation mechanism 40 is operated to horizontally rotate the chuck C at the front of the mast by 180 degrees backward to grasp the clamp 2a on the stake P1 and pull it out upward. The chuck C is then rotated forward to move the clamp 2a to the front end of the pile press-in/extraction machine 1, and as shown in FIG. 7, the clamp 2a is inserted into and gripped at the upper end of the pile P5.

As shown in FIG. 8, the mast 1 is moved forward by the width of the pile, and the chuck C is made to grip a new pile P6. Thereafter, the chuck C is lowered and the pile P6 is press-fitted, but the press-fitting is temporarily stopped during this press-fitting, and the saddle 3 is moved forward by the width of the pile while the chuck C grips the pile P6.

At this time, the fitting groove 6 of the clamp 2a that grips the pile P5
The slide portion 4 at the front end of the saddle 3 is fitted to move the saddle 3 forward. Thereafter, the pile P6 that is being press-fitted is completely press-fitted into the ground (see Fig. 9).

By repeating the above operations, the piles are press-fitted while moving on the desk, and the piles are pulled out by reversing the above procedure.

As described above, according to this embodiment, by sequentially moving the rear clamps detached from the saddle 3 forward using the chuck C, the pile press-in/extraction machine 1 can be moved quickly and safely without moving upward.

The pile press-in/extractor 11 of the second embodiment constitutes a clamp mechanism 12 shown in FIG. 3. This clamp mechanism 12 has a fitting groove 16 formed in the saddle 13, and a slide portion 14 which is slidably fitted into the fitting groove 16 and formed in the upper part of the grip body 17.

Further, in this embodiment, cylinder mechanisms 18 are internally provided on both sides of the gripping body 17, and the inner circumferential surface of the pile P is pressed and gripped with the tips of the ronds.

This embodiment also has a clamp mechanism 12 similar to the first embodiment.
The method for press-fitting and pulling out piles using this embodiment is also the first method, in which only the piles can be removed from the equipment body and transported, loaded and unloaded separately.
Since this is the same as the embodiment, the description will be omitted.

As shown in FIG. 4, the pile press-in/extraction machine 21 of the third embodiment has a suppressor 27a inserted into a gripper 27 via a cylinder mechanism 28.
It has a clamp mechanism 22 configured as follows. This grip 27
A cylinder mechanism 29b is pivotally attached to the upper part with a pin 29c, and a hook 29a is formed at the tip of the rond.

Further, a support member 29 is provided below the saddle 23, and the hook 29a is hooked to this support member 29.

With this configuration, the position of the gripping body 27 can be adjusted with respect to the saddle 23 in the direction of the arrow in the figure, and the hook 29a can be attached to the supporting member 29.
By removing the grip body 27 from the saddle 23, the grip body 27 can be separated from the saddle 23.

According to this embodiment, when the piles are press-fitted while being swung slightly to the left and right on the pile row, the position of the clamp mechanism 22 in the left-right direction can be adjusted by appropriately rotating the gripping body 27 about the pin 29c. Therefore, no unreasonable force is applied to the clamp mechanism 22.

Furthermore, the method for press-fitting and pulling out piles using this embodiment is also the same as that in the first embodiment, so a description thereof will be omitted.

FIG. 10 is a front view of the fourth embodiment. As shown in FIGS. 11 and 12, the pile press-in/extraction machine 31 of the fourth embodiment has fixed claws 37a between the gripping bodies 37 and 37.
It has a clamp mechanism 32 in which a moving claw 37b is provided.

Further, as in the first embodiment, the saddle 33 and the grip body 37 have a fitting groove 36 and a slide portion 34, and are removably slidably fitted to each other.

In this embodiment, a gap 39 is formed between adjacent steel pipe sheet piles.
The fixed claw 37a is inserted into the movable claw 37b inside the gripping body 37.
Move forward and grasp the sheet piles pH and PI3.

The method for press-fitting and pulling out steel pipe sheet piles using this example is also described in the above-mentioned first method.
Since this is the same as the embodiment, the description will be omitted. In the case of this embodiment, since the same gripping body 37 grips two adjacent steel pipe sheet piles at the same time to obtain a reaction force, the adjacent sheet piles will not rise or sink during press-fitting or pulling out. .

13 and 14 are partially sectional front views of other embodiments of the fitting groove and the slide portion of the clamp mechanism of the pile press-in/extraction machine of each of the above embodiments except the third embodiment.

In the embodiment shown in FIG. 13, a pair of cylinder mechanisms 45 are provided below the saddle 43, and the rod 45 of this cylinder mechanism
A fitting body 46 is fixed to the a end. A slide portion 44 that is slidably fitted into the fitting body 46 is formed on the upper part of the grip body 47.

Then, the cylinder mechanisms 45, 45 are operated to slidably hold the slide portion 44 with the fitting body 46.

According to this embodiment, the position of the gripping body 47 relative to the saddle 43 can be adjusted in the horizontal direction in the drawing.

Further, in the embodiment shown in FIG. 14, a slide portion 54 is provided at the bottom of the saddle 53, and a pair of cylinder mechanisms 55 are provided at the top of the grip body 57.
A fitting body 56 is fixed to the end portion of 5a, and the sliding portion 54
is configured to be slidably fitted into the fitting body 56. The functions and effects of this embodiment are the same as those described above, and the gripping body 57 can be finely adjusted in the horizontal direction in the figure.

(Effect of the invention) As described above, according to the pile press-in/extraction machine of the present invention.

It is possible to press in and pull out piles even on sites where there is no space above, and it is safe because there is no need to lift the main body when moving on its own. Additionally, the clamp mechanism can be removed from the main body of the device and transported, loaded and unloaded separately. Furthermore, since there is no need for attachments when moving on existing pile rows, there are effects such as improved work efficiency.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a front view of the first embodiment of the pile press-in/extraction machine, FIG. 2 is an enlarged cross-sectional side view of the clamping mechanism, and FIG. 3 is the second embodiment. 4 is an enlarged sectional side view of the clamp mechanism of the third embodiment, FIGS. 5 to 9 are explanatory diagrams of the operation of the first embodiment, and FIG. 10 is a pile press-in/extraction FIG. 11 is an enlarged sectional front view of the clamp mechanism, and FIG. 12 is a front view of the fourth embodiment of the machine.
The figure is a sectional view taken along the line ■-V in FIG. 11, and FIGS. 13 and 14 are partially enlarged front views of other embodiments of the fitting groove and slide portion of each of the above embodiments, and FIGS. 15 to 18. The figure is an explanatory diagram of a press-in method using a conventional pile press-in/extraction machine. 1.11.21.31... Pile press-in/extraction machine 2.12, 2
2.32... Clamp mechanism 3.13.23.33.4
3.53...saddle 4.14.34.44.54...
・Slide part 5.15.25.35...Mast 6.16.36...Fitting groove

Claims (2)

[Claims] (1) Pile press-fitting and extraction with a clamp that grips an existing pile removably attached to the lower part of the saddle, a mast configured to be movable back and forth and rotatable on the saddle, and a chuck provided at the front end of the mast to be movable up and down. Machine. (2) After installing a pile press-in/extraction machine on the existing pile row, gripping the clamp detached from the saddle with a chuck, horizontally rotating the mast and moving the clamp to the top end of the pile in the advancing direction and gripping it. A pile press-in/extraction method in which the mast is moved forward, a new pile is gripped by the chuck, and the saddle is refitted to the clamp during the press-fitting or pulling operation.