JPS6117068Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a chuck device for steel pipe piles, more specifically, a chuck device for steel pipe piles, which is used when driving steel pipe piles into the ground or pulling them out from the ground using an exciter or hydraulic device. This invention relates to a chuck device that clamps steel pipe piles.

[Conventional technology]

This type of conventional chuck device for steel pipe piles has a fixed clamping member that can be inserted into the steel pipe pile fixed at the center of the lower surface of the base, and a pair of clamping members that can be inserted into the steel pipe pile on both left and right sides of the lower surface of the base via cylinders, arms, etc. A movable clamping member is mounted to face the fixed clamping member and movable in a straight line in the opposite direction.
By penetrating the fixed clamping member into the steel pipe pile and operating the cylinder, the pair of movable clamping members move toward the fixed clamping member, and the fixed clamping member and the pair of movable clamping members move. Clamp the steel pipe pile.

[Problems to be solved by the invention] However, the above-mentioned conventional chuck device for steel pipe piles simply provides a fixed clamping member in the center of the base body.
Since a pair of movable clamping members are attached to the left and right sides of the base, the distance between the clamping positions of the fixed clamping member and the pair of movable clamping members, that is, the diameter of the steel pipe pile to be clamped, is fixed and constant. It is. Therefore, conventional chuck devices for steel pipe piles can only clamp steel pipe piles of the same diameter.

An object of the present invention is to provide a chuck device for steel pipe piles that can clamp steel pipe piles of various diameters.

[Means for solving problems]

In the present invention, a pair of attachment bodies are attached to the base body so as to be movable in a straight line, fixed clamping members are respectively fixed to the pair of attachment bodies, a movable clamping member is attached to the pair of attachment bodies, and a fixed clamping member is fixed to the pair of attachment bodies. The movable clamping member driving section is interposed between the movable clamping member and the mounting body, and the movable clamping member is mounted so as to face each other and to be movable in the same direction as the moving direction of the mounting body.

[Effect]

This invention moves a pair of mounting bodies relative to the base body according to the diameter of the steel pipe pile to be clamped.
The distance between the clamping positions of the fixed clamping member and the movable clamping member of the pair of attachment bodies can be adjusted.

〔Example〕

Hereinafter, three examples of the chuck device for steel pipe piles according to the present invention will be described with reference to the accompanying drawings.

Figures 1 to 5 show a first embodiment of the chuck device for steel pipe piles of the present invention. Figure 1 is a partially cutaway front view with the chuck interval narrowed, and Figure 2 is the chuck interval. 3 is a side view, and 4 and 5 are 3.
They are a - line sectional view and a - line sectional view in the figure.

In the figure, 1 is a base, and this base 1 includes a disk-shaped top plate 10, a rectangular middle plate 11, and a rectangular bottom plate 12 that is longer than the middle plate 11 in the longitudinal direction. an appropriate number of first rib plates 13 arranged radially between the top plate 10 and the middle plate 11;
Two side plates 14 are fixedly installed between the middle plate 11 and the bottom plate 12 at a distance sufficient to accommodate a mounting body 2, which will be described later. It consists of a second rib plate 15 arranged. An appropriate number of elongated holes 16, for example 8 elongated holes 16 in total, are provided in the long edge of the bottom plate 12 in the longitudinal direction.

2 is in a straight line direction to the above-mentioned base 1 (i.e., the longitudinal direction of the bottom plate 12 or the direction in which the elongated hole 16 is formed)
A pair of attachment bodies movably attached to the base body 1, and the attachment body 2 includes a top plate 20 that can be stored between the two side plates 14 of the base body 1, a middle flange plate 21,
A cylinder 50 is fixedly installed between the bottom plate 22, the top plate 20, and the middle flange plate 21 at such a distance that it can be stored between the two side plates 14 of the base 1 and can also accommodate a cylinder 50, which will be described later. Two first side plates 23
and the mounting plate 2 arranged between the two side plates 23.
9 and an appropriate number of first rib plates 24, and two plates fixed between the middle flange plate 21 and the bottom plate 22 at a distance sufficient to accommodate an arm 51 and a movable holding member 4, which will be described later. A second side plate 25 and an appropriately required number of second rib plates 26 disposed between the lower surface of the middle flange plate 21 and the outer surface of the second side plate 25.
It consists of. A notch 27 is provided on one side of the middle flange plate 21 to accommodate an arm 51, which will be described later, and a through hole 28 is provided on both side edges of the middle flange plate 21.
An appropriate number of holes, for example 10 each, 20 in total, are provided in correspondence with the elongated holes 16 of the base body 1. In this way, the upper part of the pair of mounting bodies 2 (the part above the middle flange plate 21) is housed between the two side plates 14 of the base 1,
Further, suitably align the elongated holes 16 of the bottom plate 12 of the base body 1 with the through holes 28 of the middle flange plates 21 of the pair of attachment bodies 2, and insert the bolts and nuts 6 into the elongated holes 16 and the through holes 28.
Tighten. As a result, a pair of attachment bodies 2 are attached to the base body 1.
can be mounted so as to be movable in a straight line (the longitudinal direction of the bottom plate 12 or the direction in which the long holes 16 are formed).

3 is the middle flange plate 21 of the pair of mounting bodies 2 mentioned above.
A fixed clamping member fixed on the lower surface of the other side (the side opposite to the notch 27), the lower half of the fixed clamping member 3 has a shape that can penetrate into the steel pipe pile P, and one (left side) A convex portion 30 is provided on one side (right side side) of the fixed clamping member 3, and the other side (right side side) is provided with a convex portion 30.
Convex portion 30 on one surface (left side surface) of the fixed clamping member 3
A recess 31 into which the holder can be fitted is provided.

4 are two second side plates 25 of the pair of mounting bodies 2;
between, facing the other surface of the fixed clamping member 3;
The movable holding members are respectively attached so as to be movable (swingable) in the same direction as the moving direction of the mounting body 2 via cylinders 50, arms 51, etc., which will be described later.

Reference numerals 20 and 51 denote a movable clamping member driving unit interposed between the mounting body 2 and the movable clamping member 4, and in this example, it consists of a cylinder 50 and an arm 51. This cylinder 50 is housed between the two first side plates 23 of the mounting body 2, and the base body of the cylinder 50 is mounted on the mounting plate 29, and the cylinder 50 and the piston rod 5 are mounted on the mounting plate 29.
The arm 5 is pivoted by a pin 52 so that the direction of movement of the arm 5 matches the direction of movement of the mounting body 2.
1 is rotatably attached to the upper part between the two second side plates 25 of the mounting body 2 with a pin 53, and one end (upper end) of the arm 51 and the tip of the piston rod 54 of the cylinder 50 are connected with the pin 53. 55, and the movable clamping member 4, which is located at the lower part between the two second side plates 25 of the mounting body 2, is pivotally supported at the other end (lower end) of the arm 51 by a pin 56. As a result, the movable clamping member 4 is attached to the pair of mounting bodies 2.
can be mounted so as to face the fixed holding member 3 and to be movable (swingable) in the same direction as the moving direction of the mounting body 2.

The chuck device for steel pipe piles of the present invention in this embodiment has the above-mentioned configuration, and its operation will be explained below.

First, by penetrating the lower part of the fixed clamping member 3 into the steel pipe pile P and extending the piston rod 54 of the cylinder 50, the movable clamping member 4 moves in the direction of the arrow and clamps the steel pipe pile P together with the fixed clamping member 3. be able to. Since the pair of attachment bodies 2 are attached to the base body 1 so as to be movable in a straight line, the pair of attachment bodies 2 can be moved in accordance with the diameter of the steel pipe pile P to be clamped, and can be moved with the fixed clamping member 3. The clamping position H between the clamping member 4 and the clamping member 4 can be adjusted.
Therefore, steel pipe piles of various diameters can be held.

Moreover, since the protrusion 30 and the recess 31 that fit into each other are provided on the opposite surfaces of the fixed clamping member 3 that penetrates into the steel pipe pile P, the movable clamping Clamping position H with member 4
The gap between the two can be made small, so even steel pipe piles with a small diameter can be held.

Further, an intermediate flange plate 21 is arranged approximately in the middle of the pair of mounting bodies 2, and the intermediate flange plate 21 is connected to the base 1.
Since it is attached to the bottom plate 12 of the base 1, the overall height when the exciter, hydraulic system, etc. is mounted on the base 1, that is, the height of the fixed clamping member 3 and the movable clamping member 4 from the top of the exciter, hydraulic system, etc. The height to the clamping position H can be reduced, which is convenient for piling in places with height restrictions, such as piling under elevated bridges.

In addition, in this embodiment, the bottom plate 1 of the base 1
2 has a long hole 16, while the middle flange plate 21 of the mounting body 2
The through hole 28 is provided in the bottom plate 12 of the base body 1.
A through hole may be provided in the mounting body 2, and a long hole may be provided in the middle flange plate 21 of the mounting body 2. In addition, both have long holes or through holes,
Alternatively, a single elongated hole or the like may be provided.

Furthermore, although the means for moving and fixing the pair of attachment bodies 2 in this embodiment are bolts and nuts 6, other means such as hydraulic cylinders, air cylinders, screws, etc. may also be used.

Figure 6 shows the second chuck device for steel pipe piles of the present invention.
FIG. 2 is a partially cutaway front view showing an embodiment of the present invention.

In this embodiment of the chuck device for steel pipe piles of the present invention, the shapes of the convex portion 30 and the concave portion 31 of the fixed clamping member 3 are changed. That is, in the first embodiment described above, it is provided from a position slightly above the lower end of the fixed clamping member 3 to the upper end, whereas in this embodiment, it is provided slightly below the upper end of the fixed clamping member 3. It is provided from the top to a point slightly above the bottom end.

In addition, the chuck device for steel pipe piles of this example is as follows:
The same effects as those of the first embodiment described above are achieved.

FIG. 7 is a partially cutaway front view showing a third embodiment of the chuck device for steel pipe piles according to the present invention.

The chuck device for steel pipe piles in this example is:
This uses a normal fixed clamping member 3 that does not have a convex part and a recessed part, and although it is not possible to clamp small diameter steel pipe piles in this way, the structure is simple and easy to manufacture. There is an effect that it is.

In addition, 7 in the figure is an exciter.

[Effect of idea]

As is clear from the above, the chuck device for steel pipe piles of the present invention has a pair of mounting bodies each equipped with a fixed clamping member, a movable clamping member, and a movable clamping member drive unit, which are attached to a base so as to be movable in a straight line. Therefore, by moving a pair of mounting bodies relative to the base body according to the diameter of the steel pipe pile to be clamped,
The distance between the clamping positions of the fixed clamping member and the movable clamping member of the pair of attachment bodies can be adjusted. Therefore, steel pipe piles of various diameters can be held.

Note that, as a matter of course, the chuck device for steel pipe piles of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of the chuck device for steel pipe piles of the present invention. Figure 1 is a partially cutaway front view showing the chuck interval, and Figure 2 is the chuck interval. 3 is a side view, and 4 and 5 are 3.
They are a - line sectional view and a - line sectional view in the figure. FIG. 6 is a partially cutaway front view showing a second embodiment of the chuck device for steel pipe piles of the present invention. Figure 7 shows the third chuck device for steel pipe piles according to the present invention.
FIG. 2 is a partially cutaway front view showing an embodiment of the present invention. 1... Base body, 16... Long hole, 2... Mounting body, 2
8...Through hole, 3...Fixed clamping member, 4...Movable clamping member, 50...Cylinder, 51...Arm, 6
...Bolt nut, H...pinching position, P...steel pipe pile.

Claims (1)

[Scope of utility model registration request] A chuck device for steel pipe piles, characterized in that a pair of mounting bodies are attached to a base body so as to be movable in a straight line, fixed clamping members are fixed to each of the pair of mounting bodies, movable clamping members are attached to each of the pair of mounting bodies so as to face the fixed clamping members and to be movable in the same direction as the movement direction of the mounting bodies, and a movable clamping member drive unit is interposed between the movable clamping members and the mounting bodies.