JPS59109617A - Static load type pile drawer - Google Patents

Abstract

PURPOSE:To widen the positioning range of a pile to be driven by providing a turning mechanism and a horizontal moving mechanism on the turning mechanism to a structure in which a chucking table is attached to the lower frame connected with a reaction clamp. CONSTITUTION:A pile P2 is grasped by a pile chucker under the condition that the pile P2 is thrust through the through hole 21 of a chucking table 14. The table 14 is positioned such that the pile P2 is positioned above a given place while combining the turning of the table 14 and the forward moving of a slide frame 6 with the ascending movement of the table 14 by the action of a pressing cylinder 16. While combining the coupler of the pile P2 with the coupler of the pile P1, the pressing cylinder 16 is operated to lower the table 14, and the pile P2 is penetrated by utilizing the reaction in the drawing direction of the existing pile P chucked by a reaction chuck 2 and the weight of the pile 1. When the pile is inclined, the cylinder 10 is operated to tilt the guide frame 8 back and forth, and thereby the penetrating direction of the cylinder 16 is matched wit the inclination of the pile.

Description

[Detailed description of the invention] The present invention relates to a static load type pile driver.

Conventionally, in order to prevent pollution such as vibration, noise, and loosening of the ground in foundation work, a static load type pile driver is used, for example, to chuck existing piles with reaction force chucks (piles chucked on a chucking table while gripping them with two twists). A method has been proposed in which the pile is press-fitted using the press force of a hydraulic cylinder. However, the range in which the pile can be placed when it is chucked onto a chucking table while gripping the existing pile with a reaction chuck is narrow, so it is self-propelled and cannot be driven into corners. It was difficult to perform some pouring.

Moreover, as a result of applying a pressing force in the vertical direction to a pile that has lost its verticality during the driving operation, the verticality is further deteriorated.

The present invention has been made in view of the above circumstances, and its purpose is to have a concise structure that allows a wide range of positions for piles to be driven and to control the direction of the pressing force. In order to make the adjustment possible, a rotating mechanism and a horizontal movement mechanism above the chucking table are installed in the structure in which the chucking table is attached to the lower frame that connects the reaction clamp, and a tilting mechanism is installed on the guide frame that guides the vertical movement of the chucking table. To provide a static load type pile driving machine equipped with a mechanism (there are two types).

Embodiments of the present invention will be described below based on the drawings. FIG. 1 is a side view of the static load type pile driving machine 1, and FIG. 2 is a partially omitted perspective view. In the figure, 2 is a reaction chuck that grips an existing pile with a cylinder 2α. The nuclear skin kachucks 2 are continuously attached to the lower surface of the lower frame 3 so as to be independently movable in the left and right direction (arrow A) by hydraulic cylinders.

Further, a turntable 4 is mounted on the upper surface of the lower frame 3 so as to be able to turn (arrow B) in a horizontal plane by being driven by a hydraulic motor. An upper frame 5 is fixedly mounted on the turntable 4. A slide frame 6 is mounted on the upper frame 5 so as to be movable in the front-rear direction (arrow C) using a hydraulic cylinder. A bracket 7 is attached to the left and right upper surfaces of the slide frame 6 near its front end, and a lower portion of a guide frame 8 near its front end is pivoted to the bracket 7 with a pin 9. A cylinder 10 for longitudinal adjustment is supported at the rear end of the guide frame 8 in a trunnion format, and the lower end of the piston rod 11 of the cylinder 10 for longitudinal adjustment is connected to the front slide frame 6.
A flap attached near the rear end of the.

The racket 12 (- is pivoted by a pin 13. Therefore, when the piston rod 11 of the longitudinal adjustment cylinder 10 is operated to expand and contract, the guide frame 8 can be tilted in the longitudinal direction (arrow D) from the vertical position as shown in the first figure. In addition, guide rails 15 for the chucking table are provided at the front left and right positions of the guide frame 8, and a guide 14α of the chucking table 14 can slide on the guide rails 15. The main body force 5 of the press-fit cylinder 16 is fixed, and the lower end of the piston rod 17 of the press-fit cylinder 16 is connected to the front end of the slide frame 6 (= the attached bracket 18 by the pin 19ζ2. Therefore, the press-fit cylinder 16 When the piston rod 17 of is expanded and contracted, the chucking table 1
4 can be moved up and down (arrow E).

As the chucking table 14, a conventionally used type can be used. Chucking Cheagle 14
is a press-fit/pull-out pile having a through-hole 21 in the center (the base pile for press-fitting or pulling-out operation with the through-hole 20 of the Nioger Screw), and the chucking table 14 is equipped with the pile inserted into the through-hole 21. The chucking cylinder 23 (:) of the gripping device 22 is used to grasp the pile, and the chucking table 14 is rotated in a horizontal plane by the drive of a hydraulic motor ((arrow F) It is free.

The static load type pile driving machine according to the embodiment of the present invention has the above-mentioned configuration, and how to use it will be explained based on the following drawings in Figure 3. 2,2
．． Figure 2 shows a state in which the next pile P1 is driven in a straight line while holding the existing steel sheet pile pile P. Furthermore, the pile P2 (Fig. 4) is connected to the pile P1 and driven in a linear position (= means, first, the pile P is erected by a means such as a hook suspended from a crane, and P! is inserted into the through hole 21 of the chucking table 14 and held by the pile gripping device 22.Next (operation of the two-pressure cylinder 16) By combining the rotation and the forward movement of the slide frame 6, the chucking table 14 is positioned so that the gripped pile P2 is above the position where it is to be driven.Then, the joint of the pile P2 is connected to the pile P2. While connecting to the joint P1, the chucking table 14 is moved downward by the operation of the press-fit shaft 1 non-taper 16, and the existing pile P chucked by the reaction chuck 2 is The pile P2 is press-fitted using the reaction force in the pulling direction.

When the press-fit cylinder 16 reaches the contracted end, the pile gripping device 22
By changing the gripping position of the pile P2 upward and repeating press-fitting, the pile P can be driven to a predetermined level. The pile driving machine 1 can move itself forward during the pile driving operation. Press-fit cylinder 1 was removed during the back-to-zero pile driving work.
6 is extended, the pile P is gripped by the pile gripping device 22, the reaction chuck 2 is released, and the press-fitting cylinder 16 is
Activate the reduction. At this time, the pile punching machine 1 is supported by the pile P, and when the slide frame 6 is moved backward, the portion below the upper frame 5 is relatively drawn toward the pile P2, so that the press-fit cylinder 16 After extending the piles again, the piles p, J:, 6, which were previously chucked, are chucked one by one by the reaction chuck 2, and the pile driving work can proceed by chucking the piles P and Pl in front one by one.

Piles can be press-fitted in a straight line in the same way, but
If the pile loses its verticality during pile driving work, such as when there is a hard part such as a rock in the ground, the guide frame 8 can be moved forward or backward by expanding or contracting the longitudinal adjustment cylinder 10 to match the inclination. By tilting, the direction of the pressing force of the press-fitting cylinder 16 can be made to match the direction of inclination of the pile. Therefore, an inclined pile can be press-fitted efficiently without increasing the inclination. In this way, one of the features of the present invention is that the press-fitting direction can be easily and accurately adjusted even in the middle of the full-length work, and there is no need to grasp and change the counterclamp 2 for the adjustment.

In addition, if press-fitting becomes impossible due to the ground condition during the straightening work, the pile is pulled out and the straightening work is repeated. By extending the pile in the opposite direction to the normal work, the pulling work can be performed using the reaction force of the existing pile in the press-fitting direction.

Note that Figures 3 and 4 show the case where there are existing piles that should take the reaction force, but if there are no existing piles or the ground is extremely hard, it is only necessary to take the reaction force with the existing piles. If this is not sufficient, a base machine such as a crane is connected to the pile driver, and the weight of the base machine is also added to perform press-fitting. If it is more difficult to press fit, use the chucking table 14.
An auger screw is inserted into the through hole 20 at the center of the hole 20, and the main work is carried out while also using excavation work.

The above description has been made regarding the case where the pile driving machine 1 of the present invention is used for straight pile driving work, but other features of the present invention appear when it is used for work at a part of a corner. be exposed. That is, after driving the pile P1 in a straight line as shown in Fig. 3,
In order to enclose the pile P as shown in FIG. The chucking table 14 is positioned so that the pile P comes to a part of the corner shown in FIG. can do. The point in which the pile P3 is press-fitted by the press-fitting force of the press-fitting cylinder 16 is the same as that described above regarding the linear driving work. When the pile driving work for pile P3 is completed, pile P4 is driven in the same manner. The slide frame 6 is moved further forward and the turntable 4 is rotated further.

Piles Pl+ and below can be piled in the same way, and an appropriate number of the piles on the new side of the corner, ie "3 * "4 +..., are elichunked to the reaction force chuck to generate sufficient reaction force. It is possible to proceed with the pile driving work while reducing the reaction force with the pile P until it becomes possible to drive the pile in a straight line. There is no need to do Futan. If sufficient reaction force can be taken by the piles on the new side of a part of the corner, then the reaction chuck 2 is moved while the final pile, for example, the pile P, is held by the pile gripping device 22. After releasing, the press-fitting cylinder 16 is operated to contract, and the chucking table 14 is rotated, and the turntable 4 is returned and rotated to slide.

Retire table 6 and force reaction chuck 2; new side stake P5. P4. After the pile is brought to the upper position, the press-fit cylinder 16 is extended again, and the reaction chuck 2 chucks a new pile. After that, the third
The linear pile driving operation described above with reference to FIG. 4 and FIG. 4 can be performed.

As mentioned above, the static load type pile driving machine of the present invention does not use impact for pile driving work, so there is no risk of generating noise or vibration pollution.
It can be used for foundation construction of buildings in urban areas and also brings the following effects. In other words, by moving the guide frame back and forth, the direction of press-in of the pile held by the chunking table can be easily adjusted. By press-fitting the pile in accordance with the angle, the pile can be driven efficiently without increasing the inclination of the pile. In addition, since the static load type pile driving machine of the present invention has a horizontal movement mechanism using a slide frame above the turning machine groove using the turntable, the chucking table can be moved over a wide range while holding the existing pile t [5] using the reaction chuck. Therefore, it is possible to drive piles in a self-propelled manner even in a part of a corner, rather than driving in a straight line, which can improve the operating efficiency and work efficiency of the machine. Also, depending on the work needs, pile driving work can be performed at the rear of the machine by using the rotation of the turntable. Moreover, since the horizontal movement mechanism is only provided in one direction of the slide frame, and there is no horizontal movement mechanism in the lateral direction of the aircraft, the width of the aircraft can be reduced, and therefore the width of the aircraft can be reduced, making it possible to reduce the width of the aircraft within the boundaries of the site in urban areas. It can also be used for foundation work in close proximity to the ground without being subject to lateral restrictions.

Note that the present invention is not limited to the structure of the embodiment,
Of course, various design changes may be made without departing from the technical idea set forth in the claims.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a side view of a static load type pile driver, FIG. 2 is a perspective view, and FIGS. 3 to 6 are plane views explaining the operation of the pile driver. It is a diagram. 1... Static load type pile driver 2... Anti-kakurambu 3... Lower frame 4°
°° Turntable 5...Upper 1 part frame 6...Slide frame 8...Guide frame 10...Cylinder for longitudinal adjustment 14...Chucking table 16...Press-fit cylinder 22...
・Press-in argument 'helper device Pr ``!+ ''2+Pl, P4
＋P6・・・Pile O・1 diagram

Claims (1)

[Claims] A reaction clamp for grasping a driven pile, a lower frame connecting the reaction clamp so as to be movable from side to side, and a turntable rotatably attached to the lower frame;
an upper frame mounted on the turntable; a slide frame mounted horizontally on the upper frame; a guide frame mounted on the slide frame so as to be tiltable back and forth; The chucking table is mounted so that it can be raised and lowered freely and is rotatably equipped with a press-fit and pull-out pile gripping device, and a cylinder that is mounted on the slide frame to move the chucking table up and down. Static load type pile drilling i.