JP2661628B2 - Pile construction method and device in low space pile driving work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for setting a pile in a low space pile driving work for setting a pile in a pile driving apparatus.

[0002]

2. Description of the Related Art Conventionally, pile laying methods for pile driving work in a low space include (1) a method using a small crane.

(2) A method using a fishing wire of the pile driving device itself.

(3) A method using human power.

[0005]

[0006]

In the method using a small crane of the above (1), there is a dead space such as a hanging hook and a slinging wire, and the length of a single pile cannot be increased. In order to secure the predetermined embedding, the number of joint piles increases, and both the work efficiency and the capacity decrease.

In the method (2) using the fishing wire of the pile driving device itself and the method (3) using the human power,
The weight per pile is limited, and both the work efficiency and the capacity are reduced as in the method (1), and there is room for improvement and necessity compared to the recent mechanization and robotization of other work.

The present invention covers all the drawbacks of the conventional method, and a method and an apparatus for pile installation in a low space pile driving work capable of safely and efficiently installing a maximum pile length in a limited upper space. It is intended to provide.

[0009]

The method according to the present invention comprises a step of laterally gripping a pile in a horizontal position, a step of pivoting the laterally gripped pile and vertically erecting the pile, and a step of vertically erecting the pile. And a pile insertion step of inserting the pile into the chuck of the pile driving device by its own weight.

[0010] An apparatus according to the present invention comprises: a horizontal rotating shaft provided on a base; rotating means for rotating the rotating shaft; a pair of arms having one end fixed to the rotating shaft; A holding device provided at the other end of the pair of arms for horizontally gripping and holding the pile at a predetermined position, a driving unit of the holding device, and a locking unit for locking the vertically rotated arm to the base. Is provided.

The rotating means is preferably constituted by a pair of hydraulic cylinders connected to a rotating shaft and operating in mutually opposite directions.

Preferably, the holding device comprises a pair of clamps, and the driving means comprises a hydraulic cylinder for moving one of the clamps.

[0013]

According to the present invention, since the pile is set up after being gripped sideways, a conventional crane is not required, and a long pile can be built even in a low and narrow space.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

Large forklift 1 as a base machine
A hydraulic power unit 2 is provided at the rear, and a low-space piling machine indicated by reference numeral 5 is mounted on the fork 4 of the mast 3 at the front.

Referring also to FIG. 4, the base 6 of the pile driver 5
Two pairs of lifting hydraulic jacks 7 are provided upright. A vibration exciter 8 is supported between the hydraulic jacks 7 via a vibration isolating rubber 8a.
Is provided. A pair of base frames 10 for connecting the forks 4 are provided.

Referring to FIGS. 5 to 7, a horizontal rotating shaft 12 is rotatably supported on a bracket 11 erected on the base frame 10 on the center line of the forklift 1. An arm 13 extending laterally and downward is protruded from an upper portion of the rotating shaft 12, and a pair of hydraulic pressure serving as rotating means is provided between a side end and a lower end of the arm 13 and the base frame 10. The cylinders 14a and 14b are vertically interposed.

One ends of L-shaped rotating arms 15 are fixedly mounted on the side of the pair of rotating shafts 12 on the side of the hydraulic cylinder 14b.
Is fixedly mounted at the other end of the holding device.

The main body 17 of the holding device 16 is formed of a rectangular frame when viewed from the front of the forklift 1 (FIG. 7). In the main body 17, for example, H
A pair of clamps 18a and 18b for holding the steel pile A are provided. One of the clamps 18 a is fixed to the main body 17, and the other clamp 18 b is moved by a hydraulic cylinder 19 (FIG. 4) provided in the arm 15.

Reference numeral 15a in FIG.
A is a sub frame, 10a is a lock pin, and both 15
a and 10a constitute locking means.

Returning to FIG. 4, the hydraulic cylinders 14a, 14b
Hydraulic chambers L1,
L2 is connected to the hydraulic power unit 2 via the electromagnetic hydraulic switching valve 20. Both oil chambers of the hydraulic cylinder 19 are connected to the unit 2 via the switching valve 20 by hydraulic circuits L3 and L4.

On the other hand, the two oil chambers of the hydraulic jacks 7 of the pile driver 5 are connected to the electromagnetic hydraulic switching valve 20 via the electromagnetic proportional control valve 21 and the electromagnetic leaf valve 22 by hydraulic circuits L5 and L6, respectively. Through the hydraulic power unit 2. Further, both oil chambers of the hydraulic cylinder 9a of the chuck 9 are connected to the hydraulic power unit 2 via a pressure converter 23 and an electromagnetic hydraulic switching valve 24 by hydraulic circuits L7 and L8. The hydraulic motor 25 of the vibration exciter 8 is connected to the hydraulic power unit 2 via the pressure converter 23 and the electromagnetic hydraulic switching valve 24 by hydraulic circuits L9 and L10. Reference numerals 26, 27, and 28 in the drawing denote an upper eccentric body, an intermediate eccentric body, and a lower eccentric body, respectively.

Next, an embodiment of pile installation will be described.

(1) Pile lateral gripping step The rotating arms 15, 15 are kept horizontal, and the H steel pile A
Is horizontally inserted into the body 17 of the holding device 16 from the side, and the hydraulic cylinder 19 is extended so that the clamps 18a, 18
Hold it sideways with b.

(2) Piling process The hydraulic cylinder 14a is contracted and the hydraulic cylinder 1
4b to extend the pivot arms 15, 1 around the pivot axis 12.
5 is turned upward by 90 degrees, the H steel pile A is set up vertically as shown by a chain line in FIG.
And is fixed by the lock pin 10a.

(3) Pile insertion process The hydraulic cylinder 9a is contracted to open the chuck 9,
By gradually contracting the hydraulic cylinder 19, the H steel pile A is lowered gradually by its own weight, and the lower part of the pile A is
To complete the installation of the pile A in the pile driver 5. During this time, the correction of the installation of the pile A is performed by the hydraulic cylinders 14a, 14b, 1
Fine adjustment of 9 and 9a is performed.

Thereafter, the chuck 9 is opened and closed, and the pile A is erected while maintaining the verticality.

[0028]

As described above, according to the present invention, the following effects can be expected.

(1) There is no need for a crane for hanging a pile, thereby reducing the machine cost. In addition, there is no need to secure crane space, and long piles can be built even in low and narrow places.

(2) A series of operations are automated, safe and
In addition, labor and labor can be saved.

(3) By replacing the holding device,
The present invention can be applied to a sheet pile, a steel pipe pile, and the like.

[Brief description of the drawings]

FIG. 1 is a side view showing a forklift in which an example of a pile setting device of the present invention is set.

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a hydraulic circuit diagram.

FIG. 5 is a side view showing a state where the pile is laterally gripped and set up.

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a front view of FIG. 5;

[Explanation of symbols]

 A ... H steel pile 1 ... Forklift 2 ... Hydraulic power unit 3 ... Mast 4 ... Fork 5 ... Low space pile driver 6 ... Base 7 ... Hydraulic for lifting Jack 8 Exciter 8a Anti-vibration rubber 9 Chuck 9a, 14a, 14b, 19 Hydraulic cylinder 10 Base frame 11 Bracket 12 Rotating shaft DESCRIPTION OF SYMBOLS 13 ... Arm 15 ... Rotating arm 16 ... Holding device 17 ... Main body 18a, 18b ... Clamp

Claims (2)

(57) [Claims] 1. A pile lateral gripping step for laterally gripping a pile in a horizontal position, a pile standing step of rotating the laterally gripped pile to stand vertically, and a vertically piled pile being attached to a chuck of a pile driving device by its own weight. A pile construction method, comprising a pile insertion step of inserting. 2. A horizontal rotating shaft provided on a base, a rotating means for rotating the rotating shaft, a pair of arms each having one end fixed to the rotating shaft, and the pair of arms. A holding device provided at the other end of the stake for horizontally holding the pile at a predetermined position, a driving device for the holding device, and a locking device for locking the vertically rotated arm to the base. A pile installation device for low space pile driving work, characterized by the following.