JPH0447240Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a pile extractor that is installed on the connecting portion of two existing piles to obtain a reaction force for pulling out from the existing piles.

(Prior art) In this type of pulling machine, as shown in Fig. 3, a pulling machine c is installed on the connecting part b of two existing piles a, a, and is connected to the connecting part b in front of it. The existing piles a are grabbed by the chuck d of the pulling machine and pulled out one by one. In this case, the chuck position d of the pile to be pulled is offset by H with respect to the path of the pulling machine that connects the connection part b. , Therefore, the chuck position moves by H to the left and right with respect to the path along which the drawing machine moves.

(Problem that the invention aims to solve) For this reason, the chuck is either slid laterally or pulled diagonally with a wire, but in either case, a couple of forces are generated around the reaction point where the puller is installed. This caused problems such as deterioration of the puller's posture and twisting of the pile.

(Means for solving the problem) The present invention is aimed at solving the above problem, and consists of a support that is installed on the connecting part of two existing piles, and a bracket attached to the support. A drawing machine consisting of a main cylinder attached through the main cylinder, a sliding plate connected to the main cylinder and sliding along a guide on the front of the column, and a pair of chucks attached to the sliding plate is attached to the base machine. In a pile extractor that is suspended and moved over existing piles, the chuck is rotatably attached to the sliding plate, and a swing plate is attached to the support, and the support is moved through the swing plate in a self-propelled manner. It is characterized by being suspended from a base machine and moved over existing piles.

(Example) An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 indicates a pulling machine, and the pulling machine 1 has a support 2 installed on the connecting part of an existing pile, and a bracket attached to the support 2. 3, a pair of main cylinders 4, 4 attached via 3, a sliding plate 6 connected to the cylinder 4 and sliding along the guide 5 on the front side of the support column 2, and a pair of main cylinders 4, 4 attached to the plate 6. Check 7,
7, and the chucks 7, 7 have rails 8, 8 provided on the upper surface of the support plates 7a, 7a, which are slidably inserted into an arcuate guiding path 9 provided on the lower surface of the sliding plate 6. It is rotatably installed and supports 2
A rotating plate 10 is attached to the upper end, and the plate 10 has overlapping plates 11, 1 which are overlapped vertically.
2 and the overlapping plates 11 and 12, the engaging elements 14 and 15 are formed on the overlapping surfaces of the overlapping plates 11 and 12 to engage with each other, and the overlapping plate 1 is disengaged from the engaging elements 14 and 15.
A rotating pin 16 that separates and connects 1 and 12 vertically.
It is suspended from a self-propelled base machine such as a hydraulic excavator or a crane (not shown) via a bracket 17 provided on the overlapping plate 11 at the top thereof. In the figure, reference numeral 18 indicates a shoe attached to the lower end of the support column 2, and the support column 2 is set on the joint of two existing piles via the shoe 18.

To explain its operation, the support 2 is set on the connecting part of the two existing piles, the existing pile connected to the connecting part in front of it is grasped by the chucks 7, and the main cylinders 4, 4 are moved. When operating, check 7,
The existing pile held by the support 7 is pulled out smoothly by receiving a reaction force from the connecting part of the two existing piles to which the support 2 is set, and the pulling machine is suspended on a self-propelled base machine to carry out the next work. When moving to the connecting part, the direction of the support column 2 is adjusted by the pivot plate 10, and the gripping angle of the chucks 7, 7 relative to the existing pile is adjusted by pivoting the chucks on the guideway 9.

(Effect of the invention) As described above, according to the present invention, the swing plate 10 is attached to the support 2 of the drawing machine 1, and the support 2 is suspended from the self-propelled base machine via the plate 10. The entire extraction machine 1 can be rotated from the ground, making it easy to attach it to the connecting part of the existing pile, and since the chucks 7, 7 are rotatably attached to the sliding plate 6 to which it is attached, the extraction machine 1 can be rotated easily. By applying a pulling force to the center position of the chuck, it is possible to prevent deterioration of the posture and twisting of the pile due to the rotation of the pulling machine.

[Brief explanation of the drawing]

FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is an explanatory view. DESCRIPTION OF SYMBOLS 1... Puller, 2... Support, 3... Bracket, 4... Main cylinder, 5... Guide, 6...
...Sliding plate, 7...Chuck, 10...Swivel plate.

Claims (1)

[Scope of utility model registration request] A support installed on the connecting part of two existing piles,
A drawer consisting of a main cylinder attached to the column via a bracket, a sliding plate connected to the main cylinder and sliding along a guide on the front of the column, and a pair of chucks attached to the sliding plate. In a pile extractor that is suspended from a base machine and moved over existing piles, the chuck is rotatably attached to the sliding plate, and a swing plate is attached to the support, and A pile extractor characterized in that the support is suspended from a self-propelled base machine and moved over the existing pile.