JPH0626579Y2 - Vibrating pile punching machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a vibration pile punching machine, and more specifically, a power supply line connected to a drive unit is damaged by vibrations generated in the vertical direction via the drive unit. The present invention relates to an improvement of a vibration pile punching machine that can prevent the occurrence of damage.

(Prior Art) Conventionally, as this type of vibrating pile punching machine, there is one disclosed in Japanese Utility Model Application No. 60-140632 already developed by the present applicant.
The vibrating pile punching machine disclosed in the publication includes a main body 1 having an eccentric shaft rotatably supported as shown in FIG. 3, a drive unit 2a for driving the eccentric shaft, and a buffer 5 for the main body 1. And a support body 8 which is supported from above via a drive supply line 14 connected to the drive section 2a so as to have a bend capable of absorbing vibration between the drive section 2a and the support body 8. And is fixed to the support 8.

(Problems to be solved by the invention) However, the conventional vibration pile punching machine has the following problems.

That is, in the vibrating pile punching machine having the above-described structure, the drive portion supply line 14 connected to the drive portion 2a of the main body 1 that vibrates has a bend capable of absorbing the vertical vibration of the main body 1 and the support 8 It is fixed to.

In addition, by supporting the main body 1 which vibrates in the vertical direction by the drive unit 2a from above from above the support body 8 via the buffer body 5, the vibration of the main body 1 is not transmitted. Normally, only the main body 1 supported by the support 8 via the buffer 5 vibrates in the vertical direction via the buffer 5.

Therefore, when driving or pulling out a pile, for example, when the ground or the like when driving or pulling out the pile is very hard, vertical vibration of the main body 1 via the drive unit 2a is generated. The supporting member 8 must be made larger so that even if the vertical vibration of the main body 1 is always increased, there is no problem.
Therefore, the bending of the drive supply line 14 hung over the drive unit 2a must be increased correspondingly to the magnitude of the vibration of the drive unit 2a, and as a result, the main body 1 of the main body 1 via the drive unit 2a. The greater the bending of the power supply line 14 corresponding to the magnitude of vertical vibration, the more the power supply line 14 droops.
The flexure of the main body 1 hits the main body 1 each time the main body 1 vibrates, or the large flexure of the main body 1 is inadvertently changed.
There is a problem that the more inconvenient the situation, such as the occurrence of the damage of No. 2, occurs, the more the flexure increases.

The present invention has been made in view of the above problems, and includes a drive unit.
Even when the vertical vibration of the main body 1 is increased via 2a, it is not necessary to largely bend the power supply line 14 in response to the vertical vibration, and even if the vibration changes, the power supply line 14
Since the bent portion of the power supply line 14 does not hit the main body 1 or inadvertently change, it is possible to drive or pull out a predetermined pile without causing a large load or damage to the power supply line 14. It is an object of the present invention to provide an excellent vibration pile punching machine.

(Means for Solving the Problems) That is, according to the present invention, by supporting the main body 1 that vibrates in the vertical direction by the drive unit and the main body 1 from above via the buffer 5, the main body 1 In the vibrating pile punching machine including the support body 8 for preventing the transmission of the vibration of the shock absorber 5, the shock absorber 5 elastically biases the shock absorber fixing body 6 integrally provided in the main body 1 from the vertical direction. A power supply line 14 composed of a lower spring 12 and an upper spring 13 is connected to the drive unit so that the lower end of the lower spring 12 of the buffer unit 5 is driven from the drive unit when the buffer unit 5 is not buffered. It is positioned at a lower end side of the lower spring 12 through a fixture 15 with a length reaching the portion.

Further, the attachment 15 is provided with the lower spring 12 of the shock absorber 5.
At a point provided on the lower end surface of the receiving seat 11 attached to the lower end of the.

(Operation) Therefore, in the vibrating pile punching machine having the above-described structure, the buffer 5 is provided with the lower spring 12 for elastically urging the buffer fixing body 6 integrally provided in the main body 1 from above and below. And the upper spring 13, and the length of the power supply line 14 connected to the drive unit from the drive unit to the lower end of the lower spring 12 of the buffer unit 5 when the buffer unit 5 is not buffered. Since the lower spring 12 is positioned on the lower end side of the lower spring 12 through the fixture 15, the power supply line
Since there is no need to have a flexure corresponding to the vibration of the main body 1 with respect to the structure 14 and the power supply line 14 has no unnecessary flexure, a problem occurs due to the flexure of the power supply line 14 during vibration. There is nothing.

Further, the attachment 15 is provided with the lower spring 12 of the shock absorber 5.
Since it is provided on the lower end surface of the seat 11 attached to the lower end of the main body 1, even if the shock absorber 5 operates to dampen the vibration of the main body 1, the shock absorber 5 must be in contact with the shock absorber 5 at all. Instead, the power supply line 14 can be positioned so as to escape from the buffer body 5.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a main body in which an even number of eccentric shafts (not shown) are axially supported so that the eccentric shafts rotate in opposite directions in synchronization with each other. An electric motor 2 for rotating the eccentric shaft is mounted on the upper surface. Reference numeral 3 denotes a chuck attached to the lower surface of the main body 1, and the chuck 3 detachably clamps a pile via a hydraulic hose 4 by the operation of a hydraulic cylinder (not shown).

Reference numeral 5 denotes a cylindrical buffer body vertically provided at the four corners of the main body 1, and an annular buffer body fixed body integrally provided at the four corners of the main body 1 at the upper end of the buffer body 5. 6 is integrally fitted. Reference numeral 7 is a rod which is vertically inserted through the fixed body 6, 8 is an arcuate hanger-like support body which supports the main body 1 from above via a buffer body 5, and the upper end 9 of the rod 7 is the support body 8 And the lower end 10 of the rod 7
Is seated in a state in which it slightly protrudes from the lower end of the buffer body 5.
11 is fixed. The support 8 is suspended by a leader or a crane.

Reference numeral 12 denotes a lower spring which is interposed between the fixed body 6 and the seat 11 of the buffer body 5 and accommodated in the buffer body 5, and 13 is interposed between the fixed body 5 and the support body 8. Figure 5 shows the upper spring exposed and exposed. Reference numeral 14 denotes a power supply line composed of a cabtire cable connected to the electric motor 2, and the power supply line 14 is the electric motor 2 when the lower and upper springs 12 and 13 of the shock absorber 5 are not compressed. It is positioned by the fixture 15 in such a length that it reaches the lower end surface of the receiving seat 11 of the buffer body 5. The power supply line 14 is provided with a seat 11
, And is bundled together by the hydraulic hose 4 and the tightening tool 16.

The vibrating pile punching machine according to the present embodiment has the above-described configuration. Next, a case where the vibrating pile punching machine 17 is used will be described.

First, the vibrating pile punching machine 17 is suspended by a leader or a crane via the support 8, and the top end of the pile 18 is clamped by the chuck 3 of the vibrating pile punching machine 17 as shown in FIG. And
When the electric motor 2 is driven, the eccentric shaft in the main body 1 rotates, whereby the main body 1 vibrates in the vertical direction, and the piles 17 sandwiched by the chucks 3 continuously strike the ground. .

At this time, when the main body 1 descends, the lower spring 12 in the buffer body 5 is pressed by the fixed body 6 and compressed, and the distance between the electric motor 2 and the seat 11 provided at the lower end 10 of the rod 7 is somewhat increased. When the main body 1 rises from the lowermost end, the lower spring 12 is restored and the fixed body 6 returns to its original position. Further, the upper spring 13 cushions the lifting of the main body 1.

In this way, due to the buffering action of both springs 12 and 13 of the buffer 5, the pile 18 is driven into and out of the ground without the vibration of the main body 1 being transmitted to the support 8 and thus the vibration of the leader and crane. You can do it.

That is, when the main body 1 descends, the power supply line 14 is slightly bent, but the power supply line 14 is not deformed.
Since the lower spring 12 is positioned on the lower end surface of the receiving seat 11 via the fixture 15, the engagement with the main body 1 and the buffer 5 is avoided, and the power supply line 14 is burdened or damaged. Does not occur, and when the main body 1 rises,
Since the fixed body 6 is buffered by the upper spring 13, the main body 1 does not rise inadvertently from the initial position, and thus the power supply line stretched between the seat 11 and the electric motor 2 is provided. No unfavorable pulling force on 14 is produced.

In the above embodiment, the power supply line is attached to the seat of one of the four shock absorbers, but the present invention is not limited to this, and as shown in FIG. A single connecting plate 11a may be formed by connecting the seats of the two buffer bodies 5, and the power supply line 14 may be attached to the central portion of the connecting plate 11a. In this case, the power supply line 14 is located on the side surface of the device. Since the device is attached at the central portion, it is possible to prevent an unbalanced load on the device and balance the device well.

Further, the power supply line is not limited to being attached to the seat of the shock absorber as in the above embodiment, but may be attached to the lower end portion of the outer peripheral surface of the shock absorber, and in the above embodiment, the power supply line drives the main body. It is positioned through the fixture so as to reach the lower end of the buffer body from the above portion, but the present invention is not limited to this.
The power supply line may be positioned from the electric motor with some bending at the lower end of the shock absorber. Further, two power supply lines may be connected at the lower end of the shock absorber, and a plurality of power supply lines may be connected from the drive unit and positioned at the lower end of each separate shock absorber. .

Further, the drive unit of the present invention is not limited to the electric motor of the above-described embodiment, but may be a hydraulic motor or other drive machine, and thus the power supply line is not limited to an electric wire and may be a hydraulic hose or the like.

(Effect of the Invention) As described above, in the vibrating pile punching machine of the present invention, the shock absorber has a lower spring and an upper spring that elastically bias the shock absorber fixed body integrally provided in the main body from the vertical direction. And a lower end portion of the lower spring having a length such that the power supply line connected to the drive portion reaches the lower end portion of the lower spring of the buffer body from the drive portion when the buffer body is not buffered. Since the power supply line is positioned on the side by means of a mounting tool, it is not necessary to provide the power supply line with a flexure corresponding to the vibration of the main body 1, and there is no unnecessary flexure in the power supply line. Therefore, it is possible to avoid the trouble caused by the bending of the power supply line during the vibration.

Further, when the attachment is provided on the lower end surface of the receiving seat attached to the lower end of the lower spring of the shock absorber,
Even when the shock absorber operates to dampen the vibration of the main body, the power supply line can be escaped from the shock absorber and positioned without contacting the shock absorber at all.

Therefore, even if the vertical vibration of the main body is increased through the drive unit, it is not necessary to largely bend the power supply line in response to the vertical vibration, and even if the vibration changes, the power supply line Since the bending portion of the power supply does not hit the main body or fluctuate inadvertently, it is possible to drive or pull out a predetermined pile without causing a large load or damage to the power supply line. It has come to have a special effect that it is possible to provide a machine.

[Brief description of drawings]

 FIG. 1 is a partially cutaway front view showing an embodiment of the present invention. FIG. 2 is a side view of an essential part showing another embodiment. FIG. 3 is a partially cutaway front view showing a conventional example. 1 ... Main body, 5 ... Buffer body 8 ... Support body, 14 ... Power supply line

Claims (2)

[Scope of utility model registration request] 1. A main body 1 which vibrates in a vertical direction by a drive unit, and a support body 8 which supports the main body 1 from above by a cushioning body 5 to prevent transmission of vibration of the main body 1. In the vibrating pile punching machine, the shock absorber 5 is composed of a lower spring 12 and an upper spring 13 for elastically urging the fixed body 6 integrally provided in the main body 1 from above and below, and , A power supply line 14 connected to the drive section
Is positioned so as to reach the lower end of the lower spring 12 of the buffer 5 from the drive portion when the buffer 5 is not buffered, and is positioned on the lower end of the lower spring 12 via a fixture 15. A vibrating pile punching machine characterized by being formed. 2. The vibrating pile punching machine according to claim 1, wherein the attachment 15 is provided on a lower end surface of a receiving seat 11 attached to a lower end of the lower spring 12 of the buffer 5.