JPH07189251A - Pile-driver device for arm type working machine - Google Patents

Abstract

PURPOSE:To improve operating efficiency in a limited working space by lowering an exciter hung from the front end side of an arm without through the tuning of the arm and pushing the exciter in an extensible manner in the lower direction. CONSTITUTION:An exciter 5 hung on the front end side of arms 12, 12a, 12b is lowered without through the turning of the arms 12, 12a, 12b in an arm type pile-driver device 1 for operation even in a limited working space, in which the derrick movement of the arms 12, 12a, 12c by the driving operation of a batter pile is controlled remarkably by a plurality of obstructions. The exciter 5 is pushed in the lower direction by an extensible cylinder 3, and a rod 4 penetrated into the cylinder 3 is elongated. Accordingly, pushing force except its own weight of the exciter 5 is applied to the batter pile 17 without derrick movement by the revolution of the arms 12, 12a, 12c, and the batter pile 17 can be driven forcibly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile driving device for an arm type working machine, and more specifically, a pile driving device using a working arm provided in a working machine body such as a self-propelled hydraulic excavator vehicle or crane vehicle. Regarding

[0002]

2. Description of the Related Art Conventionally, as a pile driving device for an arm type working machine of this type, there is one based on a self-propelled hydraulic excavator vehicle or a crane vehicle, and is appropriately used.

That is, in a pile driving device for an arm type working machine based on the above-mentioned self-propelled hydraulic excavator vehicle, as shown in FIG. 4, a hydraulic excavator in which a shovel portion (not shown) is removed in advance. Each of the first arm 12 and the second arm 12a is rotatably connected to the vehicle body 11, and the second arm 12
An agitator suspension attachment 13 having a sheave 13a is provided at the tip of a, and one end of the sheave 13a of the agitator suspension attachment 13 is attached to the exciter suspension attachment 13. And the second arm 12
The other end of the wire 16 wound around the moving sheave 15 provided on the a via the cylinder 14 is locked, and the driving pile 17 is grasped at the tip of the wire 16 on the other end side. A hook 18 for suspending the shaker 5 is provided.

[0004]

However, the above-described conventional pile driving device for arm type working machine has the following problems.

That is, the above-mentioned pile driving device for arm type working machine is
It only attaches an attachment for suspending a vibration exciter to the arm of a self-propelled hydraulic excavator, and raises and lowers the exciter suspended via a wire.

Therefore, in pile driving work on soft ground, it is possible to easily drive the pile through the weight of the exciter suspended on the wire. In the pile driving work in, it is not possible to drive the pile simply by the weight of the vibrator.

Therefore, normally, in a pile driving operation on hard ground, as shown in FIG. 5 (a), the extension arm 12b can be freely rotated through the cylinder 14a at the tip of the first arm 12a. In addition, at the end of the extension arm 12b, the exciter 5 holding the driving pile 17 is attached via the connecting tool 19, and when the pile is driven on the hard ground, the same figure (Ro ), The work of forcibly driving the piles is performed one after another by applying the pressing force of the arm.However, the site of the recent pile driving work is not limited to rivers in the suburbs, It is often done in residential areas such as roads.

[0008] Therefore, since the pile driving work in the residential area is hard ground treated with concrete and asphalt, it is necessary to forcibly drive the pile by applying the pressing force of the arm. It will be applied as a base for a hydraulic excavator vehicle etc. in which an exciter is attached to an arm via a connecting tool, but not only are there a lot of obstacles in residential areas, but especially through utility poles etc. Since the raising and lowering of the arm due to the rotation of the arm is significantly restricted by the electric wires, buildings, and signboards that are installed as a result, the preparation and setup such as the removal of obstacles manually by the operator are very complicated. Not only that, there was a very difficult problem that the total number of workers increased and the labor costs related to the extension of the construction period increased.

Therefore, the present invention solves all of the above problems, and the pile driving work site has a hard ground treated with concrete, asphalt, etc. Even in a limited work space such as a residential area where the elevation of the arm due to the rotation of the arm during the work of driving or pulling out the piles is significantly restricted, it is possible to ensure the elevation without the elevation of the arm. It is an object of the present invention to provide an extremely excellent arm-type working machine pile driving device capable of performing a predetermined pile driving operation.

[0010]

That is, according to the present invention, an exciter for driving or pulling out a predetermined pile is hung on the tip side of an arm rotatably provided on a work machine body. In the pile driving device for arm type working machine,
An extendable vibrating unit pressing means is provided for lowering the vibrating unit suspended on the tip end side of the arm without rotating the arm and pressing the vibrating unit downward. There is a point.

[0011]

In the pile driving device for an arm type working machine having the above-mentioned structure, the exciter suspended on the tip side of the arm is lowered without the rotation of the arm, and the exciter is used. Since a vibrating unit pressing means for pushing down the shaft is provided, a driving force other than the self-weight of the driving unit can be applied to the driving pile without performing the elevation of the arm due to the rotation of the arm. Then, the pile can be driven in forcibly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an arm rotatably provided on a luffer (small wheeled mobile crane) 11a.
Extension arm 12b attached to the tip of 12a
FIG. 1 shows an arm-type working machine pile driving device detachably provided via a predetermined mounting bolt 2a.

Reference numeral 2 denotes an attachment body of the arm type working machine pile driving device 1 which is externally fitted to the extension arm 12b.

In the lower part of the attachment body 2,
A hydraulic cylinder 3 that has a predetermined pressing force and that allows the inserted rod 4 to expand and contract (arrow A) at a predetermined distance.
However, it is suspended via two cylinder attachments 2b.

Reference numeral 5 denotes an exciter which vertically vibrates via a built-in hydraulically driven motor (not shown), and the lower part of the exciter 5 is used for driving a pile. Pile
A clamper 6 for holding 17 is provided.

Reference numeral 7 denotes a machine frame for rotatably supporting the vibrator 5, and bearing mechanisms 8 and 8a are provided on both sides of the vibrator 5.
It is attached via.

Reference numeral 9 designates a tip end member 4a of the rod 4 of the hydraulic cylinder 3 and an upper member 7a of the machine frame 7 and two shafts 10 and 10.
It shows a universal joint that is rotatably connected to each other by crossing a at a right angle.

Although the pile driving device for the arm type working machine according to the present embodiment has the above-mentioned construction, the pile driving device in a complicated place such as a residential area where the elevation of the arm is significantly restricted by using the following device. The case of performing the driving operation of will be described.

First, as shown in FIG. 2 (a), a pile driving site forms a hard ground 20 on which concrete, asphalt, etc. are treated, and an arm 12, 12a and 12b have multiple obstacles 20
Even in a limited working space where it is significantly restricted by the arm type work equipment pile driving device 1,
An oscillating machine 5 which is suspended on the tip side of 2, 12a, 12b is lowered without the rotation of the arms 12, 12a, 12b, and is pushed downward to press the oscillating machine. Since the cylinder 3 is provided, as shown in FIG.
Extend the rod 4 inserted into the cylinder 3 (arrow B)
By doing so, the driving pile 17 is forcibly driven by applying a pressing force other than the own weight of the exciter 5 to the driving pile 17 without performing the elevation movement due to the rotation of the arms 12, 12a, 12b. You can

Therefore, the driving pile driven into the hard ground 20 or the like
Even when the 17 is pulled out, the driving pile 17 can be forcibly pulled out (not shown) without performing the elevation movement due to the rotation of the arms 12, 12a, 12b.

Further, the arm type pile driving device 1 for a working machine is provided with a universal joint portion capable of setting the direction of the vibrator 5 attached to the machine frame 7 in any of front, rear, left and right directions. It is also possible to easily drive the piles diagonally (not shown) in the work space regulated by the above.

In the above embodiment, the exciter provided in the arm type work equipment pile driving device applies a predetermined pressing force to the grasped driving pile through the hydraulic cylinder. However, the present invention is by no means limited to this.
As shown in (a) and (b), a rectangular convex body 3c having a predetermined width is provided on the outer peripheral surface of the hydraulic cylinder in a direction along the axial direction of the hydraulic cylinder, and the rod of the hydraulic cylinder is provided. The tip portion member is engraved with a groove 3b in which the convex portion 3c can slide, and even when the rod extends (arrow C) as shown in FIG. A cylindrical rod-reinforcing guide (rod-reinforcing body) 3a for preventing the rod from being cave-in during extension may be provided by externally fitting.

Further, when the cylinder is a telescope type (not shown), the lifting stroke of the exciter can be further increased, so that the driving pile of the driving pile at a deep position from the ground surface can be increased. It is possible to drive or pull out.

Further, in the above embodiment, the exciter provided in the pile driving device for the arm type working machine is rotatably supported via the machine frame, but it is not essential in the present invention. Needless to say, the requirement is not limited to the above, but the machine frame may be fixed to the vibration oscillating machine, or the vibration oscillating machine may be directly attached to the front end portion of the hydraulic cylinder without the machine frame.

Further, in the above-mentioned embodiment, the expandable and retractable vibrator pressing means for pressing the vibrator installed in the arm type working machine pile driving device downward is composed of a hydraulic cylinder. The present invention is not limited to this,
For example, a pantograph mechanism, a combination of a rack and a pinion, a motor having a worm gear and a predetermined reduction mechanism, or the like may be used as a matter of course. Etc. are by no means limited.

Further, in the vibrator provided in the pile driving device for the arm type working machine in one embodiment of the present invention, the tip end member of the rod of the cylinder and the upper member of the machine frame are provided in two pieces. It is hung from the attachment body through a universal joint that is rotatably connected to each other by crossing the axes at a right angle. However, the specific mechanism of the universal joint never uses two shafts. They do not have to be rotatably connected to each other by crossing them at right angles. For example, the two shafts may be provided at the same position so as to be orthogonal to each other, and the presence or absence of a universal joint is essential. Needless to say, it is not a requirement of.

Further, in the above-mentioned embodiment, the arm type pile driving device for working machine is attached to the arm of the rougher through the attachment body, but the point is that the working machine body has a rotatable arm. It's all right, and it's by no means limited to rafter.

Therefore, the specific configurations of the attachment body, the vibrating device pressing means, the vibrating device and the like in the present invention, such as the quantity, shape, and mounting location, are all within the intended scope of the present invention. Design can be changed freely.

[0030]

As described above, according to the present invention, the exciter for driving or pulling out a predetermined pile is suspended from the tip end of the arm rotatably provided on the working machine main body. In the arm type pile driving device for a working machine, the exciter is arranged such that the exciter suspended on the tip side of the arm is lowered without the rotation of the arm, and Since an expandable and contractible vibrating machine pressing means for pressing the machine downward is provided, even in a limited working space where the elevation of the arm due to the rotation of the arm is significantly restricted. It is possible to forcibly drive the pile by applying a pressing force other than the own weight of the exciter to the driven pile without performing the elevation movement due to the rotation of the arm.

Therefore, the pile driving work site has a hard ground treated with concrete, asphalt, etc., and is lowered or lowered by the rotation of the arm at the time of driving the pile or pulling out the pile through the exciter. Even if the work space is limited, such as in a residential area where it will be significantly restricted, there is no need for preparatory setup work such as obstacle removal work by workers, and the reduction in the total number of workers It has a special effect that the labor cost can be kept low by shortening the construction period and the extremely efficient pile driving work can be performed.

[Brief description of drawings]

FIG. 1 is a front view showing a pile driving device for an arm type working machine according to an embodiment of the present invention.

FIG. 2 shows a usage state of a pile driving device for an arm type working machine,
The figure (a) is a side view before stakeout, and the figure (b) is a side view after stakeout.

FIG. 3 shows a cylinder provided with a rod reinforcing guide (rod reinforcing body), and FIG. 3 (a) is a sectional view of a main part, and FIG.
Is a side view of the same figure (a), and the same figure (c) is a cross-sectional view of the main part when the rod is extended of the same figure (a).

FIG. 4 is a side view showing a conventional usage state of a pile driving device for an arm type working machine.

FIG. 5 shows a conventional use state of a pile driving device for an arm type working machine, FIG. 5 (a) is a side view before driving, and FIG. 5 (b) is a side view after driving.

[Explanation of symbols]

 1 ... Pile driving device for arm type working machine 2 ... Attachment body 3 ... Hydraulic cylinder (rod reinforcing body) 5 ... Vibrator 6 ... Clamper 7 ... Machine frame 9 ... Universal joint

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[Procedure amendment]

[Submission date] November 2, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (4)

[Claims] 1. An arm type pile driving device for a working machine in which a vibrator for hanging or pulling a predetermined pile is hung on the tip end side of an arm rotatably provided in a working machine main body. In the vibrator (5), the vibrator (5) suspended on the tip side of the arm is lowered without turning the arm, and the vibrator is moved downward. An arm type pile driving device for a working machine, characterized in that it is provided with an expandable and contractible vibrating machine pressing means for pressing the arm. 2. The cylinder (3) is provided with the vibrating unit pressing means.
The pile driving device for an arm type working machine according to claim 1. 3. The pile driving device for an arm type working machine according to claim 2, wherein the cylinder (3) is a telescope type. 4. The cylinder (3) is provided with a rod reinforcing body for preventing buckling of the rod (4) inserted and extended when the rod (4) is extended. The pile driving device for an arm type working machine according to claim 2 or 3.