JP2015121026A - Pile press-in machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile press-in machine that enables suitable construction to be performed by concurrently using an auger device.SOLUTION: A chuck device 15 of a pile press-in machine 10 includes a casing chuck part that can hold an auger casing K by moving at least one of a claw part and a band toward the other one of them in the state of sandwiching the auger casing K between a claw part abutting on an outer peripheral surface of the auger casing K and a band capable of closely adhering to a half face side of the outer peripheral surface by being deformed following the outer peripheral surface of the auger casing K.

Description

  The present invention relates to a pile press-fitting machine.

2. Description of the Related Art Conventionally, a pile press-in machine that presses a pile into the ground by taking a reaction force from an existing pile is known as a device for driving a pile into the ground and burying it.
The pile press-in machine is provided at the lower part of the machine main body and clamps the existing pile, and the chuck device provided at the front end of the machine main body and holding the pile pressed into a position adjacent to the existing pile, It has. This pile press-fitting machine grabs the upper end of the existing pile with the clamp device, and with the reaction force taken from the existing pile, lowers the chuck device that holds the pile to press the pile into the ground It has become.
And an auger apparatus may be used together, when using a pile press-in machine and performing the press-in construction of a pile with respect to hard ground. At that time, in order to grip the casing of the auger device with the chuck device, the chuck device includes a casing chuck (for example, refer to Patent Documents 1 and 2).

For example, the casing chuck 50 shown in FIG. 6A includes a hydraulic cylinder C that sandwiches a rail R provided in the casing K between the claw portions 50a, and the casing K is driven by driving the hydraulic cylinder C. It is designed to grip.
Further, for example, a casing chuck 51 shown in FIG. 6B includes a hydraulic cylinder C having a guide groove that engages with a guide G provided in the casing K, and the casing K inserted therein is hydraulically The cylinder K is urged against the inner surface of the casing chuck 51 to grip the casing K.

Japanese Patent No. 3063835 Japanese Patent No. 3263037

However, in the case of the above prior art, since the casing chucks 50 and 51 have a structure corresponding to the shape of the casing K, the auger devices that can be used are limited.
Further, since projections such as rails provided on the outer peripheral surface of the casing K easily interfere with underground obstacles, the excavation efficiency may be reduced. Further, the casing K having a complicated shape provided with projections such as rails has a problem that the manufacturing cost is high and the weight of the casing K increases, so that the crane during construction becomes large.

  An object of the present invention is to provide a pile press-in machine capable of performing suitable construction by using an auger device in combination.

In order to solve the above problems, the invention described in claim 1
A pile press machine that presses piles and auger devices into the ground,
The pile press-fitting machine includes a chuck device that grips the auger casing of the auger device with the pile,
The chuck device includes:
A claw portion that contacts the outer peripheral surface of the auger casing;
A band that can be disposed along the outer peripheral surface of the auger casing opposite to the surface with which the claw portion comes into contact;
A drive unit that moves at least one of the claw part and the band toward the other in a state where the auger casing is sandwiched between the claw part and the band;
It is provided with.

The invention according to claim 2 is the pile press-fitting machine according to claim 1,
The chuck device includes a movable portion that moves toward the auger casing held by the claw portion and the band,
The pile is gripped by sandwiching the pile between the movable portion and the auger casing.

  ADVANTAGE OF THE INVENTION According to this invention, a suitable construction can be performed with the pile press-in machine which used the auger apparatus together.

It is the schematic which shows the pile press-fit machine of this embodiment by side view. It is a longitudinal section showing the chuck device of this embodiment in front view. It is sectional drawing in the III-III line of FIG. It is explanatory drawing which shows the operation | movement in which the casing chuck | zipper part in the chuck apparatus of this embodiment grasps an auger casing. It is sectional drawing in the VV line of FIG. It is explanatory drawing (a) (b) which shows the conventional casing chuck.

  Hereinafter, an embodiment of a pile press-fitting machine according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the pile press-in machine 10 is a machine that press-fits a predetermined pile P (for example, a steel sheet pile) into the ground, and grabs the upper end side of the existing pile P that has already been buried in the ground. A saddle 12 having a plurality of supporting clamping devices 11, a slide base 13 that can move back and forth with respect to the saddle 12, a leader mast 14 that can pivot left and right on the slide base 13, and a front surface of the leader mast 14 A chuck device 15 attached to be movable up and down, a main hydraulic cylinder 16 that drives the chuck device 15 up and down with respect to the leader mast 14, and the like are provided.

This pile press-in machine 10 can be used together with the auger device 20 when press-fitting the steel sheet pile P into the hard ground. In this embodiment, the auger device 20 is inserted into the chuck device 15 so that the pile press-in machine 10 performs the pile press-in construction by the auger combined use method. That is, the pile press-in machine 10 functions as a press-in device that press-fits the steel sheet pile P and the auger device 20 into the ground.
The auger device 20 includes an auger screw S provided at the tip of the auger head H so that the auger head H can be replaced, a substantially cylindrical auger casing K that covers the periphery of the auger screw S, a drive motor M that rotates the auger screw S, and the like. (See FIG. 1). The configuration and operation of the auger device 20 are the same as those conventionally known and will not be described in detail here.

The clamp device 11 is provided on the lower surface of the saddle 12. For example, the clamp device 11 can hold and grip the upper end portion of the steel sheet pile by driving a hydraulic cylinder (not shown) in a state where the upper end side of the steel sheet pile which is the existing pile P previously press-fitted is sandwiched. it can. That is, the clamp device 11 functions as a fixing means for fixing the pile press-fitting machine 10 to the upper end portion of the existing pile P by grasping the existing pile P.
In particular, the clamping device 11 can take a reaction force from the existing pile P held and supported so that the pile presser 10 can press-fit the pile P anew or pull out the buried pile P. The pile presser 10 is fixed and installed on the upper end of the existing pile P.
In addition, since the structure of the clamp nail | claw which consists of a fixed clamp nail and a movable clamp nail with which the clamp apparatus 11 is equipped, the hydraulic cylinder which drives a movable clamp nail, and the operation | movement in which a clamp nail grasps the pile P are known, it is detailed here. Do not mention.

  The slide base 13 moves forward with respect to the saddle 12 and moves the chuck device 15 together with the leader mast 14 to the front side, thereby supporting the leading clamp device 11 without moving the saddle 12. Two new piles can be arranged in the front-rear direction and sequentially press-fitted in front of the existing pile P.

The leader mast 14 moves back and forth integrally with the slide base 13.
Further, the leader mast 14 turns right and left with respect to the slide base 13 and changes the direction of the chuck device 15 to bend the direction of the row of piles that are sequentially press-fitted in a right angle or bend in a curved manner. It is possible.

The chuck device 15 is in a state in which the back side thereof is fitted to the front side of the leader mast 14 so as to be movable up and down, and is driven up and down by a main hydraulic cylinder 16 connected to the leader mast 14 and the chuck device 15. ing.
Inside the chuck device 15, as shown in FIG. 2, a casing chuck portion 1 that grips the auger casing K of the auger device 20 and a pile chuck portion 2 that grips the pile P are provided. That is, the chuck device 15 includes the casing chuck portion 1 and the pile chuck portion 2. 2 to 5, the illustration of the auger screw S in the auger casing K is omitted.

  2 to 4, the casing chuck portion 1 is provided along the outer circumferential surface of the auger casing K, the claw portion 1 a that abuts the outer circumferential surface of the auger casing K, the claw driving portion 1 b that advances and retracts the claw portion 1 a. A band 1c that can be arranged in combination, and a band drive unit 1d that moves the band 1c are provided. Further, a hydraulic cylinder 1 e is provided for moving the casing chuck portion 1 up and down in the chuck device 15.

The claw portion 1a is pushed out toward the auger casing K by the claw driving portion 1b and comes into contact with the outer peripheral surface of the auger casing K. The surface with which the claw portion 1a contacts the auger casing K is formed as a curved surface having substantially the same curvature as the cylindrical outer peripheral surface of the auger casing K. Further, the curved surface is provided with a plurality of irregularities to form a curved tooth portion.
The claw drive unit 1b is, for example, a hydraulic cylinder and functions as a drive unit that moves the claw unit 1a forward and backward. The claw drive unit 1b is not limited to using a hydraulic cylinder, and may be a drive unit that moves the claw unit 1a forward and backward by motor drive, for example. Moreover, you may provide the structure like a vise which screw | threads the nail | claw part 1a screwed by the casing chuck | zipper part main body toward the auger casing.

The band 1c is a band-shaped member made of, for example, reinforcing fiber, resin, leather, etc., and both ends thereof are fixed to the band driving unit 1d. This band 1c has the flexibility which can deform | transform so that it may closely_contact | adhere to the outer peripheral surface of the auger casing K, and the fracture resistance which can also endure a strong tension | pulling.
The band driving unit 1d functions as a driving unit that moves the band 1c so as to be pulled toward the claw portion 1a.

Then, as shown in FIG. 4, the band 1c is disposed along the outer peripheral surface of the auger casing K opposite to the surface with which the claw portion 1a abuts, and the auger casing K is sandwiched between the claw portion 1a and the band 1c. In this state, the auger casing K can be attracted to the claw portion 1a by the band driving portion 1d pulling the band 1c toward the claw portion 1a.
In other words, the auger casing K is arranged so as to penetrate vertically through the chuck device 15, and at least one of the claw portion 1 a and the band 1 c faces the other in a state where the auger casing K is sandwiched between the claw portion 1 a and the band 1 c. The casing chuck portion 1 is configured to grip the auger casing K by being moved.

As shown in FIGS. 2 and 5, the pile chuck portion 2 includes a movable claw 2a and a fixed claw 2b that are arranged to face each other. The movable claw 2a that is a movable portion is operated by driving a cylinder (not shown). Thus, it can move to the fixed claw 2b side. The surface with which the fixed claw 2b comes into contact with the auger casing K is a curved surface having substantially the same curvature as the cylindrical outer peripheral surface of the auger casing K, and the curved surface is a curved tooth with a plurality of irregularities. Has become a department.
Then, the pile chuck portion 2 is operated in a state where the auger casing K and the pile P penetrate vertically in the chuck device 15, and the movable claw 2 a of the pile chuck portion 2 faces the auger casing K and the pile P. By pushing out, the pile P can be sandwiched between the movable claw 2 a and the auger casing K, and the auger casing K and the pile P can be gripped by the chuck device 15. At this time, the auger casing K is held by the claw portion 1a of the casing chuck portion 1 and the band 1c.
In addition, in a state where the pile P is not inserted into the chuck device 15, the pile chuck portion 2 can grip the auger casing K inserted through the chuck device 15 with the movable claw 2a and the fixed claw 2b. .

  When the pile P or auger casing K (auger device) gripped by the chuck device 15 is press-fitted into the ground, the lifting range of the chuck device 15 is limited. The lowering of the device 15 and the lifting of the chuck device 15 by separating the pile P and the auger casing K are repeated. Thus, the pile P and the auger casing K are repeatedly press-fitted for each stroke in which the chuck device 15 moves up and down, and the pile P and the auger casing K can be pressed into the ground deeper than the lifting range of the chuck device 15. It has become.

The above-described pile press-in machine 10 is configured to press-fit a new pile P at the tip of the existing pile P with the chuck device 15, hold and release the upper end of the existing pile P by the clamp device 11, and slide on the saddle 12. By combining the forward and backward movement of the base 13, it is possible to self-run and move on the pile row composed of the existing piles P.
In addition, since the operation | movement which the pile press-fit machine 10 self-propels on a pile row is known, it does not elaborate here.

As described above, the chuck device 15 of the pile press-fitting machine 10 according to the present embodiment includes the casing chuck portion 1 that sandwiches the auger casing K between the claw portion 1a and the band 1c.
The band 1c of the casing chuck portion 1 follows the outer peripheral surface of the auger casing K and closely adheres to the half surface side thereof, so that the auger casing K can be firmly held. However, the auger casing K can be suitably sandwiched and gripped by the claw portion 1a and the band 1c.

If the cylindrical auger casing K can be gripped by the casing chuck portion 1 (chuck device 15), it is not necessary to provide projections such as rails on the auger casing K as in the prior art.
And the excavation efficiency by the auger apparatus 20 can be improved by using the cylindrical auger casing K without a protrusion, and the construction efficiency which presses the pile P in the ground and constructs a pile row | line can be aimed at. It becomes possible.
In addition, a simple cylindrical auger casing K having no protrusion can reduce the manufacturing cost and reduce the weight of the auger casing K. By reducing the weight of the auger casing K, the crane used at the time of construction can be reduced in size, and the construction cost can be suppressed. In addition, construction at a site where a large crane cannot be used becomes possible.

Further, since the band 1c can be deformed following the outer peripheral surface of the auger casing K, the auger casing K having various diameters can be gripped by the casing chuck portion 1 or an auger casing K that is not cylindrical (for example, conventional technology). It is also possible to grip an auger casing K) having a projection such as
That is, the pile press-fitting machine 10 provided with the casing chuck portion 1 (chuck device 15) can be used as a general-purpose press-fitting device capable of being used in combination with various auger devices 20.

  As described above, the pile press-in machine 10 including the chuck device 15 having the casing chuck portion 1 is a pile press-in machine capable of performing suitable construction using the auger device 20 in combination.

  The application of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Casing chuck part 1a Claw part 1b Claw drive part (drive part)
1c band 1d band drive unit (drive unit)
1e Hydraulic cylinder 2 Pile chuck part 2a Movable claw (movable part)
2b Fixed claw 10 Pile press-fitting device 15 Chuck device 20 Auger device K Auger casing P Pile

Claims (2)

A pile press machine that presses piles and auger devices into the ground,
The pile press-fitting machine includes a chuck device that grips the auger casing of the auger device with the pile,
The chuck device includes:
A claw portion that contacts the outer peripheral surface of the auger casing;
A band that can be disposed along the outer peripheral surface of the auger casing opposite to the surface with which the claw portion comes into contact;
A drive unit that moves at least one of the claw part and the band toward the other in a state where the auger casing is sandwiched between the claw part and the band;
A pile press-in machine characterized by comprising The chuck device includes a movable portion that moves toward the auger casing held by the claw portion and the band,
The pile press-fit machine according to claim 1, wherein the pile is gripped by sandwiching the pile between the movable portion and the auger casing.

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