JPH0632987Y2 - Hydraulic vibrating pile punching machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a hydraulic vibration pile punching machine.
The industrial fields of application are mainly steel piles such as steel sheet pile H-section steel used for retaining walls for rivers, stopping water, temporary cutoffs, civil engineering, excavation in construction, and mountain retaining walls for root cutting. Among the vibro hammers used for punching, by combining a hydraulic vibro that is particularly small and lightweight and operates using the hydraulic pressure of the pile driver body as a power source with a pile punching machine with excellent driving accuracy and good operability, Compared to the vibro, it is easier to handle, has better safety, has high output and is equipped with measures against noise and vibration, and expands the utilization range of the small hydraulic vibro, so that punching of piles can be performed efficiently especially in narrow spaces. It was done.

[Conventional technology]

In the above various construction, the conventional small hydraulic vibro
It is mainly mounted on the tip of the arm of a hydraulic excavator, and punches piles using a combination of boom and arm and traveling operations.However, it is extremely difficult to perform punching with high precision, so relatively short piles and punches are used. It is often used for small-scale construction with a small number of installations, and for temporary pile punching work that does not require high accuracy of placement. It was rarely used. In addition, the crane-mounted hydraulic vibro has a drawback that it does not allow the weight of the pile driver to be added, unlike the shovel-mounted type, although it has good driving accuracy, so its driving capacity is small relative to the weight of the vibro. .

[Problems to be solved by the device]

However, the type with the hydraulic vibro attached to the shovel arm as described above has the advantages of excellent maneuverability and large driving capability, but on the other hand, it has the disadvantages of poor placement accuracy and difficulty in operation. Although it has good operability and driving accuracy, it has the disadvantage of poor driving efficiency.

[Means for Solving the Problems]

Therefore, if the advantages of both the type with the hydraulic vibro mounted on the shovel arm and the type mounted on the crane can be selected according to the work situation, the operability and the driving capability are also improved. A superior pile punching machine can be obtained.

Further, the present invention is provided in order to enable punching work of a longer pile in a narrower space by using the advantages of both types.

That is, the first aspect of the present invention is, in a hydraulic vibration pile punching machine, a top sheave is connected to a tip of an arm connected to a boom with a pin, and a bracket attached to a vibro at a position directly below the top sheave. Is placed so that it can be brought into and out of contact with the pin of the top sheave, and the rope is hung so that the vibro can be raised and lowered by the operation of the winch equipped on the body of the pile driver, and the bracket is hooked on the pin of the top sheave by winding the rope. The weight of the pile driver main body can be applied to the vibro through the boom and the arm.

A second aspect of the present invention is the hydraulic vibration pile punching machine according to the first aspect of the present invention, in which the boom is a straight type without offset, and the arm is a center-folding type with front and rear divided into two parts. Equipped with a sheave, winch, and arm extension mechanism, a vibro is hung on the top sheave so that it can be vertically moved up and down with a small working radius, and the front arm can be extended or retracted to push or pull it out. The split arm can be stored in the transport position.

[Action]

Next, the operation of the machine according to the present invention will be described based on standard work.

First, a pile is hung up and a winch to be built in a predetermined position is rolled up, a vibro is fixed to a top pin of an arm, and a boom and a bi-arm are undulated to chuck the pile. Then, after adjusting the driving direction, the vibro is activated. Perform accurate driving while hoisting down the winch.When the pile reaches a sufficient depth to be self-supporting, hoist the winch, fix the vibro to the pin of the top sheave, and operate the boom arm to put the weight of the pile driver on the pile. Push in the pile while adding.

When the front arm is vertical and is within the stroke of the telescopic mechanism, the front arm is extended, and driving is performed while applying accurate and strong pressing force to the pile.

In pulling out work, by fixing the vibro to the arm pin, you can easily chuck the pile,
Stretching the front arm with the telescopic mechanism also facilitates the driving in or pulling out of long piles.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. First
The figure shows a side view of the pile installation posture by the hydraulic vibration pile punching machine, Fig. 2 is a side view of the finish posture of the pile in the same working radius, and Fig. 3 is the transport posture of the boom and arm of the pile puncher body. 4 is an enlarged side view of the tip portion of the front arm and a vibro attachment portion, FIG. 5 is a front view of FIG. 4, and FIG. 6 is a state in which the vibro of FIG. 4 is unwound. FIG. 7 is a side view, FIG. 7 is an enlarged side view showing the front and rear halves of the arm portion, and FIG. 8 is a sectional view taken along line 8-8 in FIG.

In the figure, 1 is a pile driver main body, 2 is a straight boom with no overall length, 3 is a boom hoisting cylinder, 4 is a rear arm, 5'is a rear arm hoisting cylinder, and 6 is the above-mentioned cylinder. A link mechanism for connecting the rear cylinders 5 and 5 ', 7 denotes a front arm, and a pair of upper and lower arm pieces
7 ₁ - 7 ₂ one on top, the guide claws ₇₁ engage the opposite sides flange sides of the respective arm pieces', 7 ₂ 'in the longitudinal direction through the guide claws 7 _1'
・ It is possible to slide through 7 ₂ ′. 8 is a derricking cylinder of the front arm, the front end portion to the lower arm pieces _71, is attached respectively to proximal end portion to the rear arm 4. 9 out of the front arm 7, a cylinder for expanding and contracting in the longitudinal direction arm pieces ₇₁ of the upper relative to the lower arm pieces 7 _2, the base end portion to the lower cylinder side, the distal end portion upper cylinder It is installed on the side. 10 out of the front arm 7, the upper arm pieces ₇₁ of providing the winch, 11 upper and lower pair (1
1 ₁ 1 _{1 2} ) sheaves, the upper part of which is a top sheave 11 ₁
And 12 of the sheaves 11 is the top pin of the top sheave 11 ₁ , 13 is a wire rope, 14 is a hydraulic vibro, 15 is a pile, 16 is a bracket attached to the vibro 14, and 17 is a top pin formed on the top of the bracket. The concave portion 18 is a connecting pin for fixing the sheave block to the bracket, and 19 is a hanger portion for supporting the vibro 14.

[Specific construction example]

First of all, the straight type boom 2 of the hydraulic excavator which is the base machine and the arms 4 and 7 that are divided into two in the front and rear and are bendable.
Stand up and build a pile 15 at a predetermined position.

Next, the winch 10 and the arms 4 and 7 are operated to chuck the pile 15 on the hydraulic vibro 14. After correcting the driving direction of the pile, the vibro 14 is started up. In the initial stage of driving, the winch 10 is gradually lowered while paying attention to the displacement of the pile, and the pile 15 which is driven with high precision becomes independent. When the ground resistance increases and the penetration decreases, the winch 10 is rolled up and the front arm is lifted. The vibro 14 is fixed to the top pin 12 of 7, and the weight of the pile driver main body 1 is added to the vibro 14 by the arms 4 and 7 and the boom 2.

[Effect of device]

Since the present invention has the above-mentioned configuration, the pile arranged at the predetermined erected position by vibro is more efficiently driven through the boom arm, that is, the boom is formed in a straight shape without offset, A small working radius and high lift can be obtained, and since the arm part is a two-part split type, the pile can be pushed in even with a small working radius.

Further, the front arm is equipped with a winch, a sheave, and a telescopic mechanism, and a hydraulic vibro with a sheave block installed in the mounting bracket portion can be arbitrarily moved up and down as in the case of the crane mounting type. Also, by winding up the winch wire rope and bringing the mounting bracket into close contact with the top pin of the front arm, the pile arm can be effectively pressed and modified by the boom arm, similar to the shovel mounting type. Further, the expansion and contraction mechanism of the front arm enables accurate and strong push-pull-out.

And, among the vibro hammers that are mainly used for punching steel piles, particularly small and lightweight, the hydraulic vibro that operates with the hydraulic pressure of the pile driving machine as the power source is excellent in driving accuracy,
By combining a pile punching machine with good operability, it is easier to handle and safer than an electric vibro, and has high output and noise / vibration countermeasures. Pile punching can be done efficiently in a narrow space.

Also, when the tip arm is vertical and the distance to the stop is within the telescopic length of the front arm, extend the telescopic cylinder of the front arm to extend the tip arm and apply a vertical pushing force to the pile. It is possible to drive up to the stop height while adding.

When the driving is completed, the vibro can be unchucked from the pile to raise the arm, and the front arm can be shortened to move to the next step.

Also, as to the correspondence of the transport posture of the machine, as shown in FIG. 3, the structure is such that the arm can be stored under the boom which is tilted in the forward and lateral direction. Therefore, it is easy to assemble and disassemble by simply removing the hydraulic vibro. It is possible to quickly move to the site without hanging up.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a pile punching machine showing a pile laying posture, Fig. 2 is a side view of the posture at the end of pile driving of Fig. 1, and Fig. 3 Is a side view of the boom during storage, the arm is in the retracted posture, FIG. 4 is a side view of the front arm portion, FIG. 5 is a front view of FIG. 4, and FIG. 6 is the vibro of FIG. FIG. 7 is a side view of the state, FIG. 7 is an enlarged side view showing an arm part which is divided into front and rear two parts, and FIG.
It is sectional drawing which follows the -8 line. 1 ...... Pile driver body 2 ...... Straight boom 3 ...... Boom hoisting cylinder 4 ...... Rear arm 5.5 ′ …… Rear arm hoisting cylinder 6 …… Link mechanism 7 (7 ₁ , 7 ₂ )… … Front arm consisting of upper and lower arm pieces 8 …… Cylinder for raising and lowering front arm 9 …… Arm telescopic cylinder 10 …… Winch 11 (11 ₁・ 11 ₂ ) …… Sheave 12 …… Top pin 13 …… Wire Rope 14 …… hydraulic vibro 15 …… pile

Claims (2)

[Scope of utility model registration request] 1. Arms (4), (7) connected to the boom (2)
The top sheave (11) is connected to the tip of the with a pin (12), and the bracket (16) having the vibro (14) attached thereto can be brought into and out of contact with the pin (12) of the top sheave at a position directly below the top sheave. The rope is suspended so that the vibro (14) can be moved up and down by operating the winch (10) equipped on the main body (1) of the pile driver, and the bracket is wound by winding the rope (13).
Hook (16) on the pin (12) of the top sheave (11 ₁ ) and attach the boom.
A hydraulic vibrating pile punching machine characterized in that the weight of the pile driver main body can be applied to the vibro (14) via (2) and arms (4) and (7). 2. The boom (2) is a straight type without offset, and the arms (4) and (7) are of a front and rear half-split type, and the front arm (7) has a top sheave (11 ₁ ), Winch (1
0), equipped with an arm extension mechanism (9), suspend the vibro (14) on the top sheave so that it can be vertically moved up and down with a small working radius, and push or pull it out by expanding and contracting the front arm (7) The hydraulic vibrating pile punching machine according to claim (1), wherein the boom (2) and the arms (4) and (7) divided into the front and rear halves can be stored in a transportation posture.