JPH08311871A - Pile driver - Google Patents

Abstract

PURPOSE: To perform pile driving even in a place where the open head is limited, and to conduct a series of works such as pile transport, take-in and pile driving with one machine efficiently. CONSTITUTION: A hanger 10 comprising a pair of hanger pieces, which are formed as a forked type is provided on the tip of an arm 6 for forming a pile driver 1. A substantially U-shaped hanger member 9 is disposed in the horizontal state between the hanger pieces 11, 11, and suspended by the hanger pieces 11, 11 through a pin 12 in such a manner as to freely rotate. The hanger member 9 is so constructed that the U-shaped opening is directed to the left side, and a vibro-hammer 8 disposed in the U-shaped opening part is suspended thorugh a pin 13 in such a manner as to freely rotate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile driver, and more particularly,
The present invention relates to a pile driver suitable for use in a place with a limited head.

[0002]

2. Description of the Related Art A pile driver used in a pile driving method for a ready-made pile is a device capable of driving a pile by mounting a leader on a shovel which is a base machine and mounting a diesel hammer or an earth auger on the leader. Yes, the leader length can be made arbitrary by adding leaders.

The vibro hammer used in the vibrating pile driving method is a device for generating vibration energy by rotating the eccentric weight or reciprocating the piston, and punching or pulling out the vibration energy, which is a hook of a crawler crane. It is generally used by suspending it in the.

[0004]

However, in any case, at a place where the height of the head is several meters or less, for example, under the overhead line, the boom of the leader or the crawler crane interferes with the overhead overhead line to perform pile driving. There was a problem that I could not. Further, since the conventional pile driving machine is exclusively used for pile driving, there is a problem in that a heavy machine for transporting and taking in the pile is required separately.

The present invention has been made in consideration of the above-mentioned circumstances, and an object thereof is to provide a pile driver suitable for use in a place where there is a restriction on the empty head.

It is another object of the present invention to provide a pile driving machine capable of performing a series of operations such as pile taking-in, transportation and pile driving by one unit.

[0007]

In order to achieve the above object, a pile driver according to the present invention has a predetermined boom attached to an upper revolving structure which is rotatably attached to a predetermined traveling structure. In a pile driving machine in which a predetermined arm is attached to the boom in the vicinity of the tip of the boom, a tip of the arm is bifurcated to form a hanger that forms a pair of hanger pieces. A predetermined vibro hammer is arranged between the hanger pieces, and the hammer is rotatably suspended by the pair of hanger pieces.

Further, according to the pile driving machine of the present invention, as described in claim 2, a predetermined boom is movably mounted on an upper swing body which is swingably mounted on a predetermined traveling body, and a tip of the boom is mounted. In a pile driving machine in which a predetermined arm is installed in a undulating manner, a tip of the arm is bifurcated to form a hanger having a pair of hanger pieces as a pair of hanger pieces. A character-shaped hanger member is arranged to rotatably hang it, and a predetermined vibro hammer is arranged to the U-shaped opening of the hanger member to hang it rotatably on the hanger member. A fixing mechanism for fixing the vibro hammer to the hanger member at a predetermined rotation position is provided.

[0009]

In the pile driving machine according to the present invention, the tip of the arm is branched to form a pair of hanger pieces, and the hanger pieces allow the vibro hammer to rotate directly or indirectly via the hanger member. Hang. Therefore, when the arm is undulated almost horizontally, the hanging position of the vibro hammer will be much higher than before, and under the same empty head height, it will be possible to drive a longer pile and the pile length will be the same. Under the conditions, pile driving is possible in a situation where the head height is more restricted.

When the vibro hammer is suspended through the hanger member, the vibro hammer is rotated with respect to the hanger member to be in a horizontal posture, so that the H-shaped steel or the steel sheet pile placed horizontally on the ground can be secured. It can be directly grasped, and can be lifted as it is to be in a vertical posture and pile driving can be performed at a predetermined position.

[0011]

Embodiments of the pile driving machine of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view and a side view of a pile driver according to this embodiment. As can be seen from these figures, in the pile driver 1 according to the present embodiment, the upper swing body 3 is rotatably attached to the crawler type traveling body 2. The traveling body 2 and the upper-part turning body 3 are preferably, for example, hydraulic excavators as base machines.

A boom 4 is rotatably attached to the upper swing body 3, and the boom 4 can be hoisted by a boom hoisting hydraulic cylinder 5. An arm 6 is rotatably attached near the tip of the boom 4, and the arm 6 can be hoisted by an arm hoisting hydraulic cylinder 7.

At the tip of the arm 6, a pair of bifurcated hanger pieces 11, as can be seen in a plan view,
A hanger 10 consisting of 11 is provided. Further, a substantially U-shaped hanger member 9 is horizontally disposed between the hanger pieces 11, 11 and is rotatably suspended by the hanger pieces 11, 11 via a pin 12.

The hanger member 9 has its U-shaped opening directed to the left in FIG. 1, and the vibro hammer 8 disposed at the U-shaped opening is rotatably suspended via a pin 13. are doing.

The arm 6 is preferably formed so as not to bend upward so that the vibro hammer 8 can be suspended at a position as high as possible.

FIG. 2 shows the vibro hammer 8 in detail. As can be seen from the figure, the vibro hammer 8 grips the head of a pile such as steel sheet pile or H-shaped steel with a hydraulic chuck 21 and applies a vibrating force to this to drive or pull out the pile. There is.

A guide pin 23 is fixed to the hanger member 9 so as to pass through an arcuate groove 24 provided in the vibro hammer 8. The guide pin 23 is rotated when the vibro hammer 8 is rotated around the pin 13. Are relatively slidable along the groove 24.

Further, a spring 25 is arranged between the guide pin 23 and the vibro hammer 8, and the vibro hammer 8 is indicated by the vertical posture shown by the solid line in the figure or the two-dot chain line by the pulling force of the spring 25. It is designed to be held in one of the horizontal postures.

An operation lever 22 as a fixing mechanism for fixing the vibro hammer 8 to the hanger member 9 in a vertical posture is provided near the guide pin 23, and the tip of the hammer 8 is fixed by a built-in spring at the fixed position. At the release position, the tip can be retracted to the front. On the other hand, a corresponding concave portion of the vibro hammer 8 is formed with a recess (not shown) into which the tip of the operating lever 22 can fit, and when in a vertical posture, the tip of the lever 22 fits into the concave portion. When the hammer 8 is fixed at this position and the operating lever 22 is operated to the release side, the tip of the lever 22 is removed from the above-mentioned concave portion, and the hammer 8 can be freely rotated.

In order to perform a series of operations such as taking in, carrying and driving of steel sheet pile or H-shaped steel by using the pile driving machine 1 according to the present embodiment, first, the operating lever 22 is operated to the releasing side and the vibro hammer 8 is operated. Is freely rotatable, and in this state, the vibro hammer 8 is rotated 90 degrees forward. And FIG.
After the hydraulic chuck 21 has been oriented horizontally as shown in (a), an H placed horizontally on the ground as shown in FIG. 3 (b), for example.
The model steel 31 is gripped by the hydraulic chuck 21.

Then, the operating lever 22 is operated to the fixed side, and in this state, the boom hoisting hydraulic cylinder 5 and the arm hoisting hydraulic cylinder 7 are appropriately operated to lift the vibro hammer 8. Then, the vibro hammer 8 gradually rotates following the lifting operation, and eventually becomes the vertical posture shown in FIG. 4 and is automatically fixed.

Next, the boom hoisting hydraulic cylinder 5 and the arm hoisting hydraulic cylinder 7 are appropriately operated to hang the vibro hammer 8, and then the vibro hammer 8 is used.
Is operated to drive the H-shaped steel 31.

As described above, according to the pile driving machine 1 of the present embodiment, the arm 6 is branched to form the pair of hanger pieces 11 and 11, and the hanger pieces 11 and 11 are formed.
Since the vibro hammer 8 is hung via the hanger member 9, the arm 6
In a state in which the vibro hammer is undulated substantially horizontally, the suspension position of the vibro hammer 8 is considerably higher than that of the conventional type in which the vibro hammer 8 is suspended from above. Therefore, under the overhead line, under the viaduct,
The structure is more suitable for pile driving work in places with limited space such as underground, and it is possible to drive piles of 2 to 3 m even in places where the total height of the pile driver is limited to, for example, about 3 m. Become.

That is, under the condition that the height of the head is the same, it is possible to drive a longer pile, and it is possible to reduce the number of joints of piles. Further, under the condition that the pile length is the same, it is possible to drive the pile in a situation where the limitation of the head height is more severe. In addition, according to the pile driving machine of the present embodiment, by horizontally rotating the vibro hammer 8 with respect to the hanger member 9, it is possible to directly grasp the steel sheet pile or the H-shaped steel placed horizontally. , Then vibro hammer 8
It is possible to hang up and rotate it to a vertical posture, and to drive in that posture. Therefore, it becomes possible to continuously perform a series of operations such as the taking-in, transporting and driving of sheet piles, etc. with one pile driving machine of this embodiment without the need for other heavy equipment, and narrow work with severe head restrictions. Pile work can be performed efficiently in places.

Further, in this embodiment, the vibro hammer 8 is used.
Is hydraulically driven, but it goes without saying that it may be electric.

[0027]

As described above, the pile driver of the present invention is
In a pile driving machine in which a predetermined boom is erected up and down on an upper revolving structure rotatably attached to a predetermined traveling body, and a predetermined arm is erected up and down near the tip of the boom, the tip of the arm is A hanger is formed by bifurcating to form a pair of hanger pieces, and a predetermined vibro hammer is arranged between the hanger pieces, and the hammer is rotatably hung by the pair of hanger pieces. Since it is held, it is possible to stake out even in places with limited head space.

Further, in the pile driver of the present invention, a predetermined boom is movably mounted on an upper revolving structure which is rotatably mounted on a predetermined traveling body, and a predetermined arm is raisable and retractable near the tip of the boom. In the pile driver attached to
The tip of the arm is bifurcated to form a hanger having the bifurcated portion as a pair of hanger pieces, and a substantially U-shaped hanger member is disposed between the hanger pieces to hang it rotatably. In addition, a predetermined vibro hammer is disposed in the U-shaped opening of the hanger member and is rotatably suspended on the hanger member, and further, the vibro hammer is fixed to the hanger member at a predetermined rotation position. Since it is equipped with a fixing mechanism, it is possible to perform pile driving even in places with limited empty heads, and it is possible to efficiently carry out a series of work such as pile transportation, loading and pile driving with one machine. .

[0029]

[Brief description of drawings]

FIG. 1A is a plan view of a pile driver according to the present embodiment, and FIG. 1B is a side view of the same.

FIG. 2A is a side view of a vibro hammer included in the pile driver according to the present embodiment, and FIG.

FIG. 3 is an explanatory view showing a state in which H-shaped steel is taken in using the pile driver according to the present embodiment.

FIG. 4 is an explanatory view showing how an H-shaped steel is similarly driven.

[Explanation of symbols]

 1 Pile driver 2 Traveling body 3 Upper revolving structure 4 Boom 5 Boom hoisting hydraulic cylinder 6 Arm 7 Arm hoisting hydraulic cylinder 8 Vibro hammer 9 Hanger member 10 Hanger 11 Hanger piece 21 Hydraulic chuck 22 Operating lever (fixing mechanism) 25 Spring 31 H type steel

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsunori Okamoto 1-15-10 Nakahiro-cho, Nishi-ku, Hiroshima City (72) Toshio Inoue 1-6-4 Osaki, Shinagawa-ku, Tokyo Inside the Harmonized Industrial Company

Claims (2)

[Claims] 1. A pile driver in which a predetermined boom is movably attached to an upper revolving structure rotatably attached to a predetermined traveling body, and a predetermined arm is movably attached near the tip of the boom. The tip of the arm is bifurcated to form a hanger having the bifurcated portion as a pair of hanger pieces, and a predetermined vibro hammer is arranged between the hanger pieces to form the hammer with the pair of hanger pieces. A pile driver that is rotatably suspended. 2. A pile driver in which a predetermined boom is erected on an upper slewing body rotatably attached to a predetermined traveling body, and a predetermined arm is erected in the vicinity of the tip of the boom. The tip of the arm is bifurcated to form a hanger having the bifurcated portion as a pair of hanger pieces, and a substantially U-shaped hanger member is disposed between the hanger pieces to hang it rotatably. In addition, a predetermined vibro hammer is disposed in the U-shaped opening of the hanger member and is rotatably suspended on the hanger member, and further, the vibro hammer is fixed to the hanger member at a predetermined rotation position. A pile driver equipped with a fixing mechanism.