JPS5930854B2 - Pile extractor - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a pile extractor.

Conventionally, piles were pulled out while applying vibration to the piles, but this was undesirable as it produced a lot of noise.

There are also noiseless types, but they are simply pulled.
It was inefficient.

In this invention, the pile is given a large vibration and the pile is pulled out while being rubbed, and it does not generate any noise.
It can be pulled out very efficiently.

The present invention will be described in detail based on the drawings.

The base frame 1 is composed of a lower base part 2 and an upright support part 3 occupying about 1/3 of the rear part.

The lower end of the swinging frame 4 located on the base frame 1 is pivoted to the base part 2 via a pivot 5, and a hydraulic hoist 6 is arranged between the rear upper part of the swinging frame 4 and the rear upper part of the base frame 1. The P swinging frame 4 swings back and forth about the pivot 5 by the expansion and contraction of the P swinging frame 4.

A cylindrical body 7 located at the upper part of the swing frame 4 is pivotally supported on the swing frame 4 by a horizontal support shaft 8 in the left and right direction.

As shown in FIGS. 4 and 5, the cylindrical body 7 is fitted with a rotating ring 10 that supports two hydraulic cylinders 12 via a thrust bearing 9 from above, and is supported by a third rotating ring 10. As shown in the figure (two bosses 28 for hydraulic cylinder mounting holes are provided along the diameter line, and two approximately arcuate slide seats 11.degree. 11 are provided on the top surface of the bosses 28.

As shown in Figure 5, the piston rod 13 of the hydraulic cylinder 12 is placed on the slide seat 11 so that it can be tilted with a coil spring 25 for returning it to an upright position.
It extends downward through a rocking bearing 14 installed in the center of the hole 8, and a clamping frame 16 is connected to the lower part of the shaft through a pin 15.
is installed.

Note that 26 shown in FIGS. 1 and 6 is a balancing helical spring that prevents the cantilevered clamping frame 16 from falling.

The clamping frame 16 is provided with a clamping block 18.1 that moves along tapered guides 17, 17 that become narrower toward the bottom.
8 is installed.

A compression spring 21 whose longest length is limited is compressed by a telescoping double tube 27 between the lever 20 attached to a boss provided on the clamping frame 16 via a fulcrum shaft 19 and the clamping block 18. ing.

The piston rod 13 is moved down, and then the lever 20 is rotated upward as shown in FIG. 4, and the clamping block 18.18Y is moved down to clamp the pile 22, such as a steel sheet pile.

Next, when the hydraulic cylinder 12 raises the piston rod 13 and expands and contracts the hydraulic hoist 6 to swing the swinging frame 4, the pile 22 receives an upward force while swinging until it reaches a predetermined height. easily pulled out.

When the piston rod 13 reaches its upper limit position, K rotates the lever 20 downward to release the clamping block 18, 18v and the expanding rod 22 as shown in FIG.

Then, the hydraulic cylinder 12 is switched, the clamping frame 16 is moved down, and the lower part of the same pile 22 is gripped again at the lower limit position.

By repeating this process, long piles can be pulled out one after another.

Also, depending on the orientation of the stake 22, it may be possible to
The clamping frame 16 is rotated by 10v9o degrees on the syst thrust bearing 9 from the solid line A position and moved to the tentative line B position to efficiently pull out the pile 22.

Note that once it has been pulled out to a certain extent, it is lifted up by a crane 24 that suspends it by a wire 29 attached to the cylindrical body 7.

As described above, the pile extractor according to the present invention is suspended by a crane 24 via a shear wire 29, and has a rocker mounted on a base frame 1, which is comprised of a lower base portion 2, a support column 3 erected at the rear. The front lower part of the movable frame 4 is pivotally supported on the base part 2 via a pivot 5, and a hydraulic hoist 6 is disposed between the column part 3 and the swing frame 4 to swing the swing frame 4 in the front and back direction, A rotating ring 10 is fitted and supported from above on the swing frame 4 via a thrust bearing 9.
Two hydraulic cylinders 12. Piston rods of 12 are mounted on a tiltable trap via sliding seats 11, 13.
13 extends downward, a clamping frame 16 is provided at the lower end of the piston rod 13° 13 via a pin 15.15, and two clamping blocks 18 move along a tapered guide 17.17 opposed to the clamping frame 16. .18'& oppositely placed, it is possible to pull out the pile while swinging it, so there is no noise (but it also allows the pile to be pulled out efficiently,
This is very convenient in practice.

[Brief explanation of the drawing]

The drawings show an embodiment of the pile extractor according to the present invention, and FIG. 1 is an overall front view, FIG. 2 is a left side view of the same as above, FIG. 3 is a plan view of the same as above, and FIG. ■-■ Side view of cut surface 5
The figures are enlarged views of the main parts of Fig. 4 and Fig. 6 in different operating positions.
The figure is a view taken along the line VI-VI in FIG. 1...Base frame, 2...Base part, 3...
... Strut part, 4 ... Swing frame, 5 ...
・Pivot, 6...Hydraulic hoist, 9...
Thrust bearing, 10... Rotating ring, 11...
...Slide seat, 12...Hydraulic cylinder, 1
Total °°°" Piston rod, 15...Pin, 16.
・・・・・・Holding frame, 17 taper guide, 18...
- Clamping block, 24... Crane, 29.
·····wire.

Claims (1)

[Claims] 1 It is suspended by a crane via a shear wire, and the front lower part of the swinging frame, which is located on a base frame with a lower base part and a pillar part erected at the rear, is pivoted to the base part via a pivot. At the same time, a hydraulic hoist for swinging the swinging frame in the front and back direction is arranged between the column and the swinging frame, and a sliding seat is attached to the rotating ring which is fitted and supported upwardly on the swinging frame via a thrust bearing. The piston rods of the two hydraulic cylinders mounted so as to be tiltable through the piston rod are extended downward, and a clamping frame is provided at the lower end of the piston rod via a pin, and the piston rods are moved along a tapered guide placed opposite to the clamping frame. A pile extractor characterized by having two clamping blocks installed opposite each other.