JPS58101929A - Chucking device for pile - Google Patents

Abstract

PURPOSE:To raise the holding force of piles by chucking device by a method in which the pile is held by a specific pile chucking part in such a way as to enable a frame and the pile to be relatively moved. CONSTITUTION:Besides the conventional chucking devices 4 and 7, a chucking device 10 under the invention is provided, which consists of a frame 11, a pile chucking part 12, a working fluid pressure cylinder device 13, and a fluid pressure cylinder device 14 to be provided between a pile P to be held by the part 12 and the frame 11. The apertures between chucking parts 25 can be freely expanded by vertically moving the part 12, and the position of the device 10 can be adjusted by a guide screw shaft 35. In penetrating or pulling out a pile P, the bottom of the pile P is held by the part 12, its top is pressed by the device 14, the frame 11 and the part 12 are relatively moved, the pile P is strongly held by the parts 25, and the devices 4 and 7 are worked.

Description

[Detailed Description of the Invention] The invention was developed by FIA, which presses piles into the ground and pulls them out from the ground.Used in a Wr* pile driver, especially for taking reaction force from piles that have already been pressed in. relating to a chucking device suitable for use;
Its purpose is to firmly and reliably hold the pile.

Therefore, there is a need to ensure that the pile press-in and pull-out operations can be carried out efficiently.

In order to achieve the above-mentioned object, the present invention has a frame, and the distance between opposing chuck parts is increased to 1 with respect to the 7 frames.
A pile chuck member supported movably up and down in an inclination direction so that it can be reduced, a hydraulic cylinder device for lifting and lowering a pile deck member connected to the pile chuck member and a frame, and a hydraulic cylinder device supported by the frame, The present invention further includes a fluid pressure cylinder device interposed between the frame and the top surface of the pile held by the pile chuck member.

Below, two embodiments of the present invention will be described in detail. In Figs. In the cylinder, each hydraulic cylinder 2 is press-fitted with a T
It is supported so that it can be raised and lowered in the left and right directions with respect to the normal line of the pile P of the J certificate. 4 is a chucking device for press-fitting and extracting piles connected between the lower ends of the gourds of each hydraulic cylinder 2;

This chucking device 4 includes a frame 5KIIF-shaped pile chuck member 6 and a fluid pressure clamping device 9y (not shown) that operates this pile chuck portion *t6. 7 is a chucking device for piles supported on both sides in front of the base 1;
These chucking devices 7 are equipped with a wedge-shaped pile chuck member on a seven-frame 8 and a fluid pressure cylinder device (both in Kllll) for operating the pile chuck member, and are adjustable in position along a guide screw shaft 9. 10 is supported by the intermediate part and vk@ part of the base 1, and receives the reaction force [IR
This is the chucking device of the present invention.

This chucking device 10 has a frame 11. Pile chuck member 12. The pile P held by the hydraulic cylinder device 13 for actuation of the pile chuck member 12 and the pile chuck member 12
A plurality of fluid pressure cylinder devices 14 are interposed between the frame 11 and the frame 11. 7 Shiichimu 11 is a pair of upper side plates 1! 1 is connected to the connecting plate 16, an outer side 1 [17 is fixed to each upper side plate 1s, and a central part Ka of each outer side 17 is fixed to each upper side plate 1s.
A horizontal guide $18 is formed. Each upper side 1 [
A lower side plate 19 hangs down and is connected to the lower inner protrusion of 15, and a top 1 [20 is fixed around the upper part of each upper side plate 15. A vertical notch groove 21 is formed in the center of each lower side 1 [19. A guide groove 23 is formed, and each guide groove 23 is inclined so that the distance between the guide grooves 23 gradually widens from the bottom to the top. A wedge-shaped pile chuck member 120 base is fitted into each guide groove 23 so as to be movable up and down. As each of these pile chatter members 12 moves up and down.

This pile chuck member 12 is a pile! The strength is superior to the nine-strength material. A shaft bearing plate 26 is identified on the inner surface of the top plate 20, and the base of the fluid pressure cylinder device 0, for example, the air cylinder device 13 is attached to the shaft bearing plate 26 by the cylinder 27.
! It is connected. An auxiliary member 27 is connected to the tip of the piston rod 13& of the air cylinder device 13, and one end of a connecting screw shaft 28 is connected to this auxiliary member 27. This connecting screw shaft 28 is connected to the piston rod 13a as shown in the illustration.
In addition to being located on the same axis as , it may also be located eccentrically. The other side of this connecting screw shaft 28 is connected to the pile chuck portion #12. Therefore, as the piston rod 13a of the air cylinder device 13 expands and contracts, the pile chuck portion $1
It can be lowered or raised by 2i. 7. A fluid pressure cylinder device 1, for example, an air cylinder device 14, is inserted into the upper center of the frame 11 in an inverted state, and a mounting plate 29 fixed to the base of this air cylinder device 140 is attached to the top plate 20 by Pole 3G. It is being The air cylinder device 14 has a piston rod 14at which is set so that its tip is located inside/above the notch groove 21 in a narrowed state. Figure 5.
The guide 11118 is horizontally fixed to the auxiliary plate sl of the base 1, and the screw hole of the protrusion 33 connected to the outer plate 17 of the 7 frame 11 is connected to the base. The guide screw shaft 31t11 is screwed onto the guide screw shaft s5 provided in the horizontal direction on the auxiliary plate s4 of the base 1. Therefore, by rotating the guide screw shaft 31t11, the p chat orderer device 109
Guide rail 3! chucking device 1
The 0 position t-am can be used as the 0th number, then the book l! IM about the operation when press-fitting pile Pt into the ground using a clearing device! Akasushima ◇Base 1t - Suspended on pile ν which has been press-fitted by crane (not shown), chucking device 10f)
Press in the W notch groove 21. Press the even-numbered pile 1 into the pile PK. Next, extend the air cylinder device 1s piston rod 15at, and press the pile chatter part $.
1 tube is lowered, and the pile chuck II members 12 are used to clamp the pile P (see the chain line in FIG. So, the air cylinder device 14
By extending the piston rod 14at and suppressing the top of the pile P with the tip of the piston rod 14&, the 7-ray All and the pile chuck part #12t are moved relative to each other in the vertical direction, and the chuck part 25 of the pile chuck member 12 is moved vertically. Yop pile P
t-Hold firmly. Pile PKI to be press-fitted together with this
After that, it is clamped by the press-fitted pile P in contact with the chucking device 7).

A pile P￥r is suspended in the chucking device 4 for press-fitting and pulling out,
Expansion and contraction of the hydraulic cylinder 2 and the pile P of the chucking device 4
Pile p2 can be press-fitted into the ground by performing a combination of clamping and releasing operations. After press fitting, the piston l of the air cylinder device 13.14 of the chucking device 10
The pile chuck member 12 is raised by contracting the metal fittings 13a and 14a and released from the pile P. At the same time, the chucking device 7 is also released from the pile P.

Next, lift the base xt and move it diagonally forward.

After the movement, the base 1 is suspended, and the work of press-fitting the post pile P can be performed in the same manner as described above (by repeating the same operation). In addition, by performing the operation opposite to the above, the p pile P can be pulled out, and a reaction force is applied downward to the II base 1, but this reaction force is applied to the chucking device gIt1.
It is possible to receive the pile P not only by the pile chuck member 12 of 0 but also by the air cylinder device 14, thereby ensuring that the pile P is held securely.

The pile chucking device 10 of the present invention can also be used as a chucking device 7 for clamping a press-fitted pile PT adjacent to a pile P to be press-fitted. Further, the fluid pressure cylinder device 14 does not need to be fixed to the seven frames 11.

As is clear from the above, according to the present invention, multiple piles are clamped by the pile chuck member by the operation of the fluid pressure cylinder device, and the frame and the piles are moved in the vertical direction by the operation of another fluid pressure cylinder device. Since it is moved relative to the pile chuck member, the pile can be firmly clamped in the direction of the pile 1s. Therefore, it is especially suitable for reaction forces, and the press-fitting and pulling out of the pile is made more efficient. The chucking device of the present invention is shown in a simple a8II diagram of FIGS. 1-7.
! Examples are shown in Figures 1 to 3, which show a plan view, a partially cut side view, and a front view of the next state in which the chuck/gage device is supported by a pile driver, and Figure 4 shows a part of the base. FIG. 5 is an enlarged front view showing the chucking device tube of the present invention with a portion of the base cut away; FIG. 5 is an enlarged side view showing the chucking device of the present invention with a portion of the base cut away
Figure $6 shows the chucking device fk of the present invention.

, i11!7 is an enlarged sectional view taken along the line M-W in FIG.

1... Base, 2... Hydraulic cylinder, 4... Pile press-fit.

Chucking device for pulling out, 7... Chucking device,
DESCRIPTION OF SYMBOLS 10... Chucking device of this invention, 11... Frame, 12... Pile chuck member, 13.14... Air cylinder device, 22... Guide member, 32... Guide rail, 35 ...Guide screw shaft.

Special dispatcher Morikichi Yamamoto Not soot nofe

Claims (1)

[Claims] 7 frames, a pile chuck member that is supported so as to be movable up and down in the inclination direction so that the interval between the opposing chuck parts can be expanded and reduced with respect to the 7 frames, and this pile chuck member and 7 frames. a hydraulic cylinder device for lifting and lowering a pile chuck member connected to a frame, and a fluid pressure cylinder device supported by a frame and interposed between the frame and the y4 plane of the pile held by the pile chuck member; A pile chucking device characterized by: