JP2001254357A - Rotary pile penetrating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary pile penetrating apparatus which is light in entire weight, and can be transported by a trailer without disassembling the apparatus. SOLUTION: A first guide cylinder 5 is installed in parallel with an axial center of a steel pipe pile 1, at a location of an elevating frame 6 which is outside the installation location of an elevating cylinder 7, and a second guide cylinder 4 is installed on a base frame 2 so as to be arranged in the internal periphery of the first guide cylinder 5. Then, a horizontal jack 1 for adjusting the height of the base frame 2 is arranged on a coaxial cable of the second guide cylinder 4, and a fourth guide cylinder 11 is arranged on a coaxial cable of a chuck cylinder 9 at a location of the elevating frame 6 which is inside the installation location of the elevating cylinder 7. Further, a third guide cylinder 10 is installed on an upper frame and on the internal or external periphery of the fourth guide cylinder 11. In this manner, the rotary pile penetrating apparatus is constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary pile penetrating device for rotating a large-diameter steel pipe pile for use in foundation work in construction and civil engineering, while rotating the pile and pulling it out.

[0002]

2. Description of the Related Art In the past, a method of hitting a large-diameter steel pipe pile while hitting it was common, but in order to improve environmental problems such as noise and vibration, the large-diameter steel pipe pile is clamped and rotated. The method of penetrating a rotating pile into the ground is the mainstream.

As such a rotary pile penetrating device, for example, a wedge-shaped chuck member 25 is provided on a tapered surface converging toward a rotation center as disclosed in Japanese Patent Application Laid-Open No. 63-251520 shown in FIG. Some use a wedge-type chuck device that slides and holds a steel pipe.

However, in such a conventional apparatus, the upper frame is supported by the lifting frame only through a plurality of clamp cylinders without using another guide mechanism or the like. Therefore, if the operations of the clamp cylinders are not synchronized, the movement of the clamp members becomes uneven due to the inclination of the upper frame or the like, and the outer periphery of the steel pipe pile cannot be properly held. Therefore, in order to vertically move the plurality of chuck members in synchronization, it is necessary to move the upper frame up and down while keeping the amount of hydraulic oil supplied to each clamp cylinder constant. However, there is a problem that the configuration of the hydraulic circuit for supplying the hydraulic oil becomes complicated, which causes an increase in cost.

It is an object of the present invention to solve this problem, that is, to raise and lower the upper frame and the elevating frame horizontally by a simple structure without requiring new equipment, thereby appropriately holding the outer periphery of the steel pipe pile. Technology
Japanese Patent No. 2731347 discloses a tubing device.

As shown in FIG. 4, a plurality of wedge-shaped chuck members 32 arranged on the outer periphery of a casing tube 31 are attached to a rotating frame 34 rotatably supported by an upper frame 33, and the chuck members 32 A rotating mechanism 35 having a casing tube insertion hole having a sliding tapered surface is rotatably supported by a lifting frame 36, and a chuck mechanism in which an upper frame 33 and a lifting frame 36 are connected via a chuck cylinder 37. A rotating mechanism (not shown) for rotating the rotating body 35 is mounted on the elevating frame 36, and the elevating frame 36 is supported on the base frame 38 so as to be able to move up and down. A tubing device equipped with a lifting mechanism that pushes and pulls the tube 31 The lifting mechanism includes a plurality of sets of a first guide cylinder 40 and a second guide cylinder 41 provided in parallel with and coaxial with the tubing tube 31, and one of the first and second guide cylinders 40, 41 is the other. To the upper frame 33 than the lifting frame 36.
The first guide cylinder 40 is attached to the elevating frame 36 by protruding to the side, and the second guide cylinder 41 is attached to the base frame 38.
Further, a third guide cylinder 42 fixed to the upper frame 33 is slidably supported by a first guide cylinder 40 projecting from the elevating frame 36.

According to this tubing apparatus, the first guide cylinder 40 can be used without using a circuit for keeping the amount of hydraulic oil supplied to the plurality of chuck cylinders 37 constant.
Thereby, the upper frame 33 is reliably slid while keeping the horizontal state.

[0008]

However, in the apparatus disclosed in Japanese Patent No. 2731347, the upper frame 33 and the elevating frame 36 are raised and lowered horizontally so that the outer periphery of the steel pipe pile can be properly held. Although it is possible to do so, it has the following problems.

1. The lifting cylinder 39 is the first guide cylinder 4
0 and is fixed to the second guide cylinder 41, so at the time of elevating, that is, at the time of dropping and pulling out the steel pipe pile 31,
The load from the lifting cylinder 39 acts on both cylinders 40 and 41. Therefore, the dimensions and thickness of the first and second guide cylinders 40 and 41 must be increased.

[0010] 2. Further, since the guide tubes 40, 41, and 42 have a triple structure that slides coaxially, the guide tube 42 of the upper frame 33 is higher than the guide tube (first guide tube) 40 of the lifting frame 36. The outer diameter increases, and as a result, the weight of the guide cylinder 42 of the upper frame 33 constituting the rotary pile penetration device increases accordingly.

3. The mounting position of the guide tube 42 of the upper frame 33 is set at the same position as the first and second guide tubes 40 and 41, which is the outside position of the apparatus. Therefore, the size of the upper frame 33 in the form of a ring is necessary up to the outer position, and as a result, the weight of the upper frame 33 constituting the rotary pile penetration device becomes larger by that amount.

4. Horizontal jack 43 and lifting cylinder 39
Are arranged coaxially, the overall height of the rotary pile penetrating device is increased, and as a result, the weight of the rotary pile penetrating device is correspondingly increased.

As described above, according to the conventional apparatus disclosed in Japanese Patent No. 2731347, the overall weight of the rotary pile penetrating apparatus increases. When the work at the pile driving site is completed, the rotating pile penetration device is transported to the next work place, but if the overall weight of the device becomes heavy, a trailer or heavy equipment with high capacity of transport is required. Therefore, the cost was high. If the capacity of the trailer or heavy equipment is exceeded, the rotary pile penetrating device must be disassembled and transported, requiring much labor for disassembly and assembling at a new pile driving site.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary pile penetrating device which has a small weight and can be transported by a trailer without disassembling the device.

[0015]

In order to solve the above-mentioned problems, a rotary pile penetrating device according to the present invention comprises a lifting frame driven up and down by a plurality of lifting cylinders with respect to a base frame fixed on the ground; An upper frame that is driven up and down by a plurality of chuck cylinders with respect to the lifting frame, between the upper frame and the lifting frame, the lifting frame or the upper frame is raised and lowered by a plurality of chuck cylinders, and the outer periphery of the steel pipe pile A rotation mechanism for rotating the chuck mechanism is provided on the elevating frame, and a rotation of the steel pipe pile for pushing and pulling the steel pipe pile by raising and lowering the elevating frame by a plurality of elevating cylinders is provided. In the pile penetrating device, the lifting and lowering fan parallel to the axis of the steel pipe pile and outside the mounting position of the lifting and lowering cylinder. A first guide tube attached to the position of the over arm slidably second to the inner periphery of the first guide tube
Is attached to the base frame.
A horizontal jack for adjusting the height of the base frame is provided coaxially with the guide cylinder, and a fourth guide is provided coaxially with the chuck cylinder at a position of the elevating frame inward of the mounting position of the elevating cylinder. A cylinder is provided, and a third guide cylinder is attached to the upper frame so as to be slidable on the inner or outer periphery of the fourth guide cylinder. The fourth guide cylinder and the third guide cylinder may be provided not on the outer periphery of the chuck cylinder but on the outer periphery of the lifting cylinder.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to embodiments shown in the drawings. FIG.
1 is a sectional view showing a first embodiment of the present invention, and shows only one side of a configuration centering on a steel pipe pile 1.

In FIG. 1, reference numeral 2 denotes a base frame fixed on the ground, and horizontal jacks 3 for adjusting the height of the base frame 2 are attached at a plurality of positions with respect to the center of the base frame 2. The second guide cylinder 4 is fixed vertically so as to include the horizontal jack 3. A first guide cylinder 5 is slidably mounted on the outer periphery of the second guide cylinder 4, and the plurality of first guide cylinders 5 are fixed to a lifting frame 6.

The lifting frame 6 is driven up and down by a lifting cylinder 7 having a rod fixed to the base frame 2. The lifting frame 6 is provided inside the lifting frame 6.
And a third guide cylinder 10 having one end fixed to the upper frame 8 and the elevating frame 6, respectively, so that the chuck cylinder 9 is included therein. Four guide cylinders 11 are slidably mounted. A rotating body 12 driven to rotate by a rotating mechanism (not shown) is provided inside the lifting frame 6 with a bearing 13 interposed therebetween.

A chuck mechanism 14 for chucking the steel pipe pile 1 is attached to the rotating body 12, and in the illustrated example,
A lever 15 is attached to the rotating body 12 so as to be tiltable by a pin, and a base end of the chuck member 16 is attached to the lever 15 so as to be rotatable. A roller 17 is rotatably mounted on the upper end of the lever 15, and a rotating frame 18 for pushing the roller 17 is rotatably mounted on the upper frame 8 by a bearing 19.

In the embodiment having the above construction, the steel pipe pile 1 suspended by a crane or the like is inserted into the center of the apparatus, and the lifting cylinder 6 is driven to raise the lifting frame 6. Next, when the chuck cylinder 9 is contracted, the rotating frame 18 pushes down the roller 17, and the end of the chuck member 16 comes into close contact with the periphery of the steel pipe pile 1. Since the chuck member 16 is disposed around the steel pipe pile 1, the steel pipe pile 1 is sandwiched by the plurality of chuck members 16. In this state, the rotating body 12
When the lifting cylinder 7 is driven downward while rotating
The steel pipe pile 1 is pushed into the ground while rotating. When the chuck cylinder 9 is raised when the lifting stroke of the lifting cylinder 7 is reached, and the lifting cylinder 7 is also raised, the biting of the chuck member 16 into the steel pipe pile 1 is released and the steel pipe pile 1 is stopped and the chuck is stopped. The mechanism 14 moves up together with the lifting cylinder 7. When the chuck cylinder 9 is lowered again when the lifting cylinder 7 is raised, the next rotation and pushing are performed, and by repeating this, the steel pipe pile 1 is pushed into the ground.

In the first embodiment, the horizontal jack 3 and the lifting cylinder 7 are arranged not in the same axis but in parallel, and the upper frame 8 is
The third and fourth guide cylinders 10 and 11 for maintaining the horizontal posture so as not to be tilted are also the first and second guide cylinders 4 and 4.
Since it is provided in parallel with 5, there is no need to increase the outer diameter of the cylinder as compared with a conventional triple cylinder structure. Also, the overall height can be reduced. Further, the upper frame 8
Can be made smaller than the outer shape of the elevating frame, so that it is possible to reduce the weight of the conventional structure requiring the same outer shape.

FIG. 2 shows a second embodiment of the present invention. In the second embodiment, third and fourth guide cylinders 10 and 11 for maintaining a horizontal posture so that the upper frame 8 is not inclined with respect to the lifting frame 6 are provided so as to include the lifting cylinder 7. Things. The other configurations and operations are the same as those of the first embodiment, and thus the description is omitted.

In the first and second embodiments, a specific structure has been described as the chuck mechanism 14.
The mechanism is not limited to this, and may be the mechanism shown in FIGS. 3 and 4 or another mechanism as long as it is of an automatic biting type.

[0024]

As described above, according to the present invention, the following effects can be obtained. 1. Since the lifting cylinder is not fixed to the first and second guide cylinders and is directly fixed to the lifting frame and the base frame, the load by the lifting cylinder does not act on the first and second guide cylinders. The size and thickness of the second guide cylinder can be reduced. 2. Since the elevating guide cylinders of the upper frame and the elevating frame are provided respectively like the first, second and third and fourth guide cylinders, the outer diameters of the third and fourth guide cylinders are the first and second guide cylinders. Irrespective of the outer diameter of the device, the required minimum size can be obtained. 3. Since the mounting position of the guide cylinder provided on the upper frame is located inside the mounting positions of the first and second guide cylinders, the size of the upper frame is reduced, and the weight of the upper frame is reduced. 4. Since the horizontal jack and the lifting cylinder are not arranged coaxially, the height can be reduced.

As described above, according to the present invention, the total weight of the rotary pile penetrating device can be significantly reduced as compared with the prior art. Therefore, when the rotary pile penetration device is carried into the next place, heavy equipment such as a trailer is not required, and the device can be transported as it is without disassembling the device.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a cross-sectional view showing another example of a conventional rotary pile penetration device.

FIG. 4 is a cross-sectional view illustrating a configuration of a tubing device disclosed in Japanese Patent No. 2731347.

[Explanation of symbols]

1 steel pipe pile, 2 base frame, 3 horizontal jacks,
4 second guide cylinder, 5 first guide cylinder, 6 elevating frame, 7 elevating cylinder, 8 upper frame, 9 chuck cylinder, 10 third guide cylinder, 11 fourth guide cylinder, 12 rotating body, 13 bearing , 14 chuck mechanism, 15 lever, 16 chuck member, 17 roller, 18 rotating frame, 19 bearing

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tetsushi Akashi 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu Nippon Steel Plant Design Co., Ltd. F-term (reference) 2D050 AA06 CB22 CB23 DB03 EE04

Claims (2)

[Claims] A lifting frame driven by a plurality of lifting cylinders with respect to a base frame fixed on the ground; and an upper frame driven by a plurality of chuck cylinders with respect to the lifting frame. A chuck mechanism is provided between the upper frame and the elevating frame to raise and lower the elevating frame or the upper frame by a plurality of chuck cylinders to grip and release the outer periphery of the steel pipe pile, and rotate the chuck mechanism by the elevating frame. A rotating mechanism is installed, and in the rotating pile penetrating device for a steel pipe pile, in which the lifting frame is raised and lowered by a plurality of lifting cylinders to push and pull the steel pipe pile, parallel to the axis of the steel pipe pile, and the lifting cylinder A first guide cylinder is attached to a position of the lifting frame outside the attachment position, and an inner periphery of the first guide cylinder is mounted. A second guide cylinder is slidably attached to the base frame, and a horizontal jack for adjusting the height of the base frame is provided coaxially with the second guide cylinder. A fourth guide cylinder is provided coaxially with the chuck cylinder at the position of the lifting frame, and the fourth frame is provided on the upper frame.
A rotating pile penetrating device, wherein a third guide cylinder is slidably attached to the inner or outer circumference of the guide cylinder. A lifting frame driven by a plurality of lifting cylinders with respect to a base frame fixed on the ground; and an upper frame driven by a plurality of chuck cylinders with respect to the lifting frame. A chuck mechanism is provided between the upper frame and the elevating frame to raise and lower the elevating frame or the upper frame by a plurality of chuck cylinders to grip and release the outer periphery of the steel pipe pile, and rotate the chuck mechanism by the elevating frame. A rotating mechanism is installed, and in the rotating pile penetrating device for a steel pipe pile, in which the lifting frame is raised and lowered by a plurality of lifting cylinders to push and pull the steel pipe pile, parallel to the axis of the steel pipe pile, and the lifting cylinder A first guide cylinder is attached to a position of the lifting frame outside the attachment position, and an inner periphery of the first guide cylinder is mounted. A second guide cylinder is slidably attached to the base frame, and a horizontal jack for adjusting the height of the base frame is provided coaxially with the second guide cylinder. A fourth guide cylinder is provided coaxially with the lifting cylinder at the position of one of the lifting frames, and a third guide cylinder is slidably mounted on the upper frame at the inner or outer periphery of the fourth guide cylinder. Rotary pile penetration device characterized by the following: