JPH083461Y2 - Clamping mechanism for work equipment on pile - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a clamp mechanism for a pile work device that presses or pulls a pile of steel sheet pile or the like used in various civil engineering works into the ground. In particular, the present invention relates to a clamp mechanism for a work device on a pile that holds an upper end of an existing pile press-fitted near an obstacle such as a wall surface of a building near the place where the pile is press-fitted and can press-fit the pile near the obstacle.

(Prior art) When press-fitting a pile into the ground, a pile press-in / pull-out machine or an on-pile working device is used, but at that time, the upper end of the existing pile is held by a clamp provided at the bottom of the body of the pile press-in / pull-out machine or the like. I was holding the body on the pile.

When advancing on the pile, each clamp moves upward to release the pinched state of the pile, and then moves left and right to hold the pile in front. Therefore, when a building or an obstacle is adjacent to the press-fitting work site, at least a space corresponding to the left and right movement width of each clamp must be provided from the building or the obstacle, and the pile press-in / extractor must be installed. , It was not possible to press the pile close to the building.

(Problems to be Solved by the Invention) As described above, in the clamp mechanism of the conventional pile work device, the clamp collides with an obstacle such as a building when the device is moved, and the pile closes to the building. It was impossible to press in or do any other work. The present invention has been devised in view of such a situation as described above, and an object thereof is to provide a clamp mechanism for a work apparatus on a pile that enables press-fitting of a pile or other work in the vicinity of an obstacle or the like.

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention provides a clamping mechanism configured at the bottom of a pile work device that moves on an existing pile row to perform various operations, and an adjacent existing U-shape. Alternatively, it is characterized by a fixed pawl having a width accommodated between the flanges of the Z-shaped steel sheet pile and a thickness within the height of the pile, and a movable pawl provided with a moving mechanism.

(Operation) The held part of the existing pile is inserted into the gap between the fixed claw and the movable claw, and the main body of the work apparatus on the pile is placed on the existing pile. Then, when the moving mechanism of the movable pawl is operated, the movable pawl moves forward and presses the existing pile, so that the existing pile is sandwiched between the fixed pawl and the movable pawl, and the pile work device is held on the existing pile. At this time, since the fixed claw does not protrude from the web surface of the existing pile, it does not collide with an obstacle or the like close to the existing pile.

After the work equipment on the pile is erected on the pile in this way, various works such as press fitting of the pile are performed. Even when the work equipment on the pile is moved, the clamp can be raised and moved forward without colliding with an obstacle or the like.

(Embodiment) Next, one embodiment of the present invention will be described in detail with reference to the drawings. 1 is a front view of the pile press-in / pull-out machine, and FIG. 2 is a view of FIG.
II-II sectional view, FIG. 3 (A) is a plan view of the pile press-in / pull-out machine, and FIG. 3 (B) is a plan view of the pile press-in / pull-out machine during press-fitting the steel sheet piles at the corners. C) is III in FIG. 3 (A).
-III sectional view, FIG. 4 is a plan view of the clamp in the state where the grip of the steel sheet pile is held, and FIG. 5 is a front view showing another example of the pile working device.

In the present embodiment, a pile press-fitting / pulling machine will be described as an example of the pile working device, but it goes without saying that it can be applied to various other pile working devices. In the present specification, the flange of the Z-shaped steel sheet pile refers to portions corresponding to horizontal bars above and below "Z". And, being housed between the flanges of the adjacent Z-type steel sheet piles means a state of being housed in the space between the flanges of the adjacent Z-type steel sheet piles.

The pile press-fitting / extracting machine of this embodiment has a slide base 1a slidably fitted on the upper portion thereof as shown in FIGS. 1 and 2.
The clamp mechanism is attached to one end of the base 1 having the above, and the chuck 7 and the like attached to the tip of the mast 2 rotatably provided on the slide base 1a.

Three clamps 10 are vertically provided at the lower end of the base 1, and the clamp 10 is mounted at a position where the outer surface 10f of the clamp 10 on the fixed claw 11 side is the base 1 as shown in FIG. Outer surface 1
A clamp 10 is provided at the end of the base 1 so as to be flush with f. However, the clamp 10 is the outer surface 1f of the base 1.
You may attach it in the state which protruded or retracted rather than.

The clamp 10 includes a fixed pawl 11, a movable pawl 12 and a moving mechanism for the movable pawl 12, and in the present embodiment, the moving mechanism includes a cylinder 10a and a rod 10b which are operated by liquid pressure.

The thickness Q of the fixing claw 11 is formed to be equal to or less than the height M of the U-shaped steel sheet pile P, and the width R is also equal to or less than the distance N between the flanges of the adjacent U-shaped steel sheet piles P and P. Therefore, when the U-shaped steel sheet pile P is held, the fixed claw 11 is housed between the flanges of the adjacent U-shaped steel sheet piles P and P and does not project from the surface of the U-shaped steel sheet pile P.

Therefore, the upper end of the existing U-shaped steel sheet pile P, which is press-fitted in the vicinity of the adjacent object S, can be sequentially clamped by each clamp 10, and the pile press-fitting / extracting machine can be advanced along the pile row.

Further, when a new pile is held on the chuck 7 and the grip of the new U-shaped steel sheet pile P is matched with the grip of the existing U-shaped steel sheet pile P, the outer surface of the chuck 7 collides with the adjacent object S when press-fitting into the ground. It is possible to press-fit steel sheet piles one after another without doing.

In this way, the press-fitting / pulling-out operation of the U-shaped steel sheet pile P can be performed in a state where the U-shaped steel sheet pile P is close to the adjacent object S.

A cylinder 1b for moving the slide base 1a back and forth is built in the base 1.

On the other hand, the mast turning mechanism 5 is configured in the mast 2 provided on the slide base 1a.

The mast turning mechanism 5 comprises a motor 5a having a gear 5c fixed to the tip of the shaft, and a turning shaft 5b having a gear 5d meshing with the gear 5c formed on the upper portion thereof. The lower end of the turning shaft 5b is the slide member. It is fixed to the base 1a.

An elevating mechanism 3 for moving the arm 4 up and down is provided at the front end of the mast 2, and the cylinder 3a of the elevating mechanism 3 is attached to the arm 4
It is fixed to the rear end, and the lower end of the rod 3b is fixed to the front lower end of the mast 2.

A chuck 7 for holding a press-fitted steel sheet pile is rotatably attached to the tip of the arm 4 by a turning mechanism 6 built in the arm 4.

The rotating mechanism 6 is composed of a motor 6a having a gear 6c fixed to the tip of the shaft, and a rotating shaft 6b having a gear 6d meshing with the gear 6c formed above, and a chuck 7 at the lower end of the rotating shaft 6b. It is a fixed configuration.

The chuck 7 has a substantially rectangular parallelepiped shape as shown in FIG. 3, one side is opened to form a storage portion 7m for the U-shaped steel sheet pile P, and both side portions of the U-shaped steel sheet pile P are provided inside both ends of the storage portion 7m. It has a built-in holding mechanism that holds Pb. The structure of this holding mechanism includes a cylinder 7c, a movable claw 7d, and a fixed claw 7b.

When the U-shaped steel sheet pile P is held, the side portions Pb of the U-shaped steel sheet pile P are inserted into the insertion grooves 50 formed on both sides of the storage portion 7m, and the web Pc of the U-shaped steel sheet pile P is held while being exposed from the chuck 7. It is held by the fixed claw 7b and the movable claw 7d of the mechanism.

The holding mechanism holds the web of the U-shaped steel sheet pile P in a state of being exposed to the outside from the chuck, and thus may hold a portion between the web and the grip, for example, a flange. In addition to this embodiment, in the case of a Z type steel sheet pile,
A holding mechanism is used to hold the web with flanges corresponding to the upper and lower horizontal bars of "Z" exposed to the outside.

The operation of the pile working device of this embodiment will be described based on the above configuration.

The pile press-in / pull-out machine is fixed to the upper end of the existing U-shaped steel sheet pile P by the clamp 10 formed on the lower part of the base 1.

Next, the both sides Pb of the press-fit U-shaped steel sheet pile P is inserted into the pile insertion groove 50 of the chuck 7, and the cylinder 7c is operated to hold the U-shaped steel sheet pile P by the movable claw 7d and the fixed claw 7b, and the mast swing mechanism 5
By rotating the motor 5a and the motor 6a of the arm 4, the grip of the press-fit U-shaped steel sheet pile P held by the chuck is matched with the grip of the existing U-shaped steel sheet pile.

In this state, when the lifting mechanism 3 of the arm 4 is operated to retract the rod 3b, the chuck 7 descends, so that the U-shaped steel sheet pile P held by the chuck 7 is pressed into the ground. When the U-shaped steel sheet pile P is pressed into the ground by about half, the clamped state of the clamp 10 is released to separate it from the existing U-shaped steel sheet pile P.

With the clamp 10 opening the U-shaped steel sheet pile P, the elevating mechanism 3 is operated to move the mast 2, the slide frame 1a, and the base 1 which are connected to the rod 3b upward. With the upward movement of the base 1, the lowermost end of the clamp 10 moves to above the existing steel sheet pile, and then the cylinder 1b for front and rear masts is provided.
Is operated, the rod 1d extends, and the base 1 connected to the rod 1d moves forward along the slide base 1a.

Cylinder 3a when the base 1 moves forward by the width of the pile
By raising the fluid pressure inside and extending the rod 3b, the mast 2, the slide frame 1a, and the entire base 1 move downward, and then the clamp 10 below the base 1 holds the existing U-shaped steel sheet pile again.

In this way, after the reaction force at the time of press-fitting the pile is obtained again, the U-shaped steel sheet pile P, which is held by the chuck 7 and is in the process of press-fitting, is completely press-fitted into the ground.

After press fitting, the chuck 7 is released from the U-shaped steel sheet pile P. When the elevating mechanism 3 is operated again to raise the arm 4 and the chuck 7, and then the cylinder 1b for front and rear masts in the base 1 is operated, the slide base 1a moves forward by the width of the pile. Here, a new U-shaped steel sheet pile P is attached to the chuck 7 and pressed into the ground again.

When the U-shaped steel sheet pile P is press-fitted or the apparatus body is moved, in this embodiment, the clamp 10 is located at the end of the base 1, and when the U-shaped steel sheet pile P is held, the clamp 10 is held.
Since the fixed claw 11 is housed in the flange of the connected U-shaped steel sheet pile P, the surface of the fixed claw 11 does not protrude from the surface of the U-shaped steel sheet pile P. Therefore, the pile press-fitting / extracting machine can be held on the existing U-shaped steel sheet pile P without the clamp 10 colliding with the adjacent object S close to the existing U-shaped steel sheet pile P.

Even when the base 1 is raised or moved forward, the clamp 10 does not project from the surface of the existing U-shaped steel sheet pile P and therefore does not collide with the adjacent object S.

Further, the chuck 7 also stores the U-shaped steel sheet pile P inside the storage portion 7m, and holds the web Pc of the U-shaped steel sheet pile P while being exposed to the outside from the opening of the chuck 7, so that the outer end of the chuck 7 is adjacent to the adjacent object S. It is possible to carry out the press-fitting work of the U-shaped steel sheet pile P while holding the U-shaped steel sheet pile P in the state of being close to the adjacent object S without colliding with.

By repeating the above operation, the steel sheet piles can be continuously pressed into the ground one after another. If the procedure reverse to the above is performed, the press-fitted steel sheet piles can be sequentially withdrawn.

Further, as another example of the work equipment on the pile, as shown in FIG. 5, there is a work equipment 21 in which a crane 20 is mounted on a base. The clamp 10 of the working device 21 has the same configuration as the clamp 10 of the above-described embodiment, and the present working device 21 is self-propelled on the pile row to reach the destination and performs work such as unloading.

Further, according to the present invention, it is also possible to press the steel sheet pile into a corner or press into a curve. That is, as shown in FIG. 3 (B), the motor 5a is operated to rotate the mast 2 about the rotation shaft 5b, and the slide base 1a is slightly rotated, and then the motor 6a in the arm 4 is moved. The chuck 7 is operated to rotate the chuck 7 about 90 degrees about the rotation shaft 6b. At this time, simultaneously operate the cylinder 1b in the base 1 to slide the slide base.
Move 1a forward to confirm the press-fitting position of the steel sheet pile,
The grip of a new steel sheet pile held in the chuck 7 is already installed U
The shape of the sheet pile P is matched with the grip and press-fitted.

As described above, in the pile press-fitting / extracting machine of this embodiment, the mast 2 is rotatable and the chuck 7 is also rotatable, so that the steel sheet pile having a right angle or a sharp curve can be easily and promptly press-fitted.

Further, in this embodiment, as shown in FIG. 4, since the hole 60 is formed in the central portion of the fixed claw 11, the grip, which is the connecting portion between the U-shaped steel sheet piles P, is inserted into the hole 60 and the U-shaped steel sheet pile is inserted. It is possible to hold P and P.

(Effects of the Invention) As described above, by using the clamp mechanism of the pile working device of the present invention, the upper end of the existing pile press-fitted close to the adjacent obstacle is clamped to perform the work on the pile. Since the device can be held, it is possible to press-fit the pile or perform other work in the vicinity of an obstacle or the like.

In addition, it is possible to move on the pile quickly and surely while self-propelled without vibration, and it is also effective when the pile row is at a right angle or a sharp curve. There are effects such as becoming.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a front view of a pile press-fitting / pulling machine, Fig. 2 is a sectional view taken along line II-II of Fig. 1,
FIG. 3 (A) is a plan view of the pile press-in / pull-out machine, FIG. 3 (B) is a plan view of the pile press-in / pull-out machine in which the steel sheet pile at the corner is being press-fitted, and FIG. 3 (C) is FIG. (A) III-III line sectional drawing, 4th
The figure is a plan view of the clamp in the state where the grip of the steel sheet pile is held, and FIG. 5 is a front view showing another example of the pile working device. 1 ... Base, 1a ... Slide base 2 ... Mast, 3 ... Lifting mechanism 4 ... Arm, 5 ... Mast turning mechanism 6 ... Rotating mechanism, 7 ... Chuck 10 ... Clamp, 11 ... … Fixed claws, 12… movable claws

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. In a clamp mechanism configured on the lower part of a work device on a pile that moves on an existing pile row to perform various works, a width accommodated between the flanges of adjacent existing U-shaped or Z-shaped steel sheet piles, and a width of the pile. A clamp mechanism for a pile-up working apparatus, comprising: a fixed pawl having a thickness within a height and a movable pawl provided with a moving mechanism.