Hydraulic pile pulling device

Abstract

The utility model discloses a hydraulic type pile pulling device which relates to the technical field of industrial equipment and comprises a base, two hydraulic cylinders are fixedly connected to the top face of the base, the output ends of the hydraulic cylinders are fixedly connected with a first pedestal, stand columns are fixedly connected to the four corners of the top face of the base, and the stand columns are fixedly connected with a second pedestal. The top end of the stand column is fixedly connected with a second pedestal, a second through opening is formed in the center of the surface of the second pedestal, a first through opening is formed in the surface of the first pedestal, and the inner side wall of the first through opening is fixedly connected with a frame. The hydraulic cylinder is used for driving the first pedestal and the pile body to move upwards together, after a section of the pile body is pulled out, the second pedestal and the pile body are fixed through the clamp, the hydraulic cylinder is driven to reset, the process is repeated, and the effect of completely pulling out the long pile body is achieved in the pile pulling mode that the pile body is pulled out in stages.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial equipment, in particular to a hydraulic pile pulling device. Background Art

[0002] The hydraulic pile puller is a pile-driving machine that uses the power of a hydraulic cylinder to pull the pile out of the ground. The hydraulic pile puller uses its pile clamp to clamp the pile head, and the hydraulic cylinder forces the pile clamp to lift it upward for a certain distance, and then pulls out the pile section by section. It is suitable for pulling I-beam or steel piles in clay, sand or soil layers containing a small amount of gravel.

[0003] However, in the prior art, part of the pile body is buried deep underground, and the single pile pulling stroke of the general pile pulling device is limited. Once the length of the pile body buried underground exceeds the stroke of the pile pulling device, the pile pulling process cannot be completed through a single operation, and it is necessary to reposition the pile and pull the pile multiple times, which affects the efficiency of the pile pulling work. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the length of the pile body buried underground exceeds the stroke of the pile pulling device, the pile pulling process cannot be completed by a single operation, and multiple pile pulling operations are required after repositioning, which affects the efficiency of the pile pulling work, and a hydraulic pile pulling device is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic pile pulling device comprises a base, the top surface of the base is fixedly connected to two hydraulic cylinders, the output end of the hydraulic cylinder is fixedly connected to a first pedestal, four corner positions of the top surface of the base are fixedly connected to columns, the top end of the column is fixedly connected to a second pedestal, a second opening is opened at the center position of the surface of the second pedestal, a first opening is opened on the surface of the first pedestal, an inner side wall of the first opening is fixedly connected to a frame, both ends of the frame are slidably connected to frame plates, and an outer side wall of the second opening is provided with a clamp.

[0006] Preferably, one side of the clamp is fixedly connected to a sliding table, and the bottom end of the sliding table is slidably connected to a guide rail.

[0007] Preferably, the bottom surface of the guide rail is fixedly connected to the top surface of the second pedestal, and the outer side wall of the guide rail is coated with lubricant.

[0008] Preferably, the outer side walls of the two frame plates are fixedly connected with first electromagnet blocks, and a telescopic column is connected between the two first electromagnet blocks.

[0009] Preferably, the outer side wall of the sliding platform is fixedly connected with a second electromagnet block, and the two sliding platforms are connected by the magnetic attraction of the second electromagnet block.

[0010] Preferably, a distance sensor is fixedly connected to the top surface of the first pedestal, and anti-slip stripes are provided on the inner side wall of the frame plate.

[0011] Preferably, a mounting block is provided inside the base.

[0012] Preferably, positioning holes are provided on the surface of the base, and the base is fixed to the ground by bolts.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the first pedestal is fixed to the pile body by means of a frame and a frame plate, and the first pedestal and the pile body are driven to move upward together by means of a hydraulic cylinder. After the pile body is pulled out for a section, the second pedestal is fixed to the pile body by means of a clamp, and the hydraulic cylinder is driven to reset. This process is repeated, and the pile pulling method of pulling out the pile body in stages is used to achieve the effect of completely pulling out the long pile body.

[0015] 2. In the utility model, the friction between the first pedestal and the pile body is increased by increasing the area of ​​the frame and the frame plate, thereby overcoming the friction of the soil and gravel on the pile body during the pile pulling process, avoiding the problem of slipping between the first pedestal and the pile body during the pile pulling process, and at the same time using two groups of electromagnet blocks to control the first pedestal and the second pedestal to be alternately connected to the pile body, so as to control the intermittent movement and lifting of the pile body by creeping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a schematic diagram of the overall structure of a hydraulic pile pulling device;

[0017] Figure 2 The utility model provides a three-dimensional structural schematic diagram of a first pedestal in a hydraulic pile pulling device;

[0018] Figure 3 The utility model provides a three-dimensional structural schematic diagram of a second pedestal in a hydraulic pile pulling device;

[0019] Figure 4 The utility model provides an operation flow chart of a hydraulic pile pulling device.

[0020] Legend: 1. Base; 2. Hydraulic cylinder; 3. First pedestal; 4. Distance sensor; 5. First opening; 6. Frame; 7. Telescopic column; 8. First electromagnet block; 9. Frame plate; 10. Column; 11. Second pedestal; 12. Second opening; 13. Guide rail; 14. Sliding table; 15. Second electromagnet block; 16. Clamp. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1

[0024] like Figure 1-4 As shown, the utility model provides a hydraulic pile pulling device, including a base 1, the top surface of the base 1 is fixedly connected to two hydraulic cylinders 2, the output end of the hydraulic cylinder 2 is fixedly connected to a first pedestal 3, four corner positions of the top surface of the base 1 are fixedly connected to columns 10, the top of the column 10 is fixedly connected to a second pedestal 11, a second opening 12 is provided at the center position of the surface of the second pedestal 11, a first opening 5 is provided on the surface of the first pedestal 3, the inner side wall of the first opening 5 is fixedly connected to a frame 6, both ends of the frame 6 are slidably connected to frame plates 9, and the outer side wall of the second opening 12 is provided with a clamp 16.

[0025] The specific configuration and function of the present embodiment are described in detail below. The hydraulic pile puller is fixed to the pile body in two sections. The first section is the first pedestal 3 and the frames 6 arranged on both sides. The outer side wall of the pile body is clamped and fixed by two frame plates 9. The second section is arranged at the top, which is the second pedestal 11 and the clamps 16 arranged around it. The frame body in the middle is clamped mutually by two groups of clamps 16. The process of pulling out piles is as follows. First, the pile body passes through the first through opening 5 and the second through opening 12 in sequence. The first pedestal 3 and the second pedestal 11 are both wrapped around the outer side of the pile body. Then, the control system turns on the power supply of the first electromagnet block 8, and the frame plates 9 are mutually adsorbed by the magnetic attraction of the first electromagnet block 8. The outer side wall of the pile body is clamped and fixed by the frame plates 9, so that the output end of the hydraulic cylinder 2 drives the first pedestal 3 to lift upward, and drives the pile body to be pulled out upward, until the distance sensor 4 detects that the distance to the second pedestal 11 is close, the distance sensor 4 sends out a warning signal, and the hydraulic cylinder 2 stops driving the first pedestal 3 to lift upward;

[0026] The system then turns on the power of the second electromagnet block 15, so that the second electromagnet block 15 controls the clamp 16 to attract each other and clamp the outer wall of the pile body. Then the first electromagnet block 8 is disconnected to cancel the fixation of the frame 6 and the pile body. The output end of the hydraulic cylinder 2 drives the first pedestal 3 to move downward until it moves to the lower limit position, and then the first pedestal 3 is fixed to the pile body again, and the second pedestal 11 is separated from the pile body. The hydraulic cylinder 2 is used to lift the pile body from the bottom to the top again, and this operation process is repeated continuously. The pile body is gradually lifted upward by using a creeping method similar to that of an earthworm. Without increasing the stroke of the hydraulic cylinder 2, the pile pulling effect can be achieved for a long pile body, avoiding the design of the device being too heavy.

[0027] Embodiment 2

[0028] like Figure 1 and Figure 2 As shown, a sliding table 14 is fixedly connected to one side of the clamp 16, and a guide rail 13 is slidably connected to the bottom end of the sliding table 14. The bottom surface of the guide rail 13 is fixedly connected to the top surface of the second pedestal 11, and the outer wall of the guide rail 13 is coated with lubricant. The outer walls of the two frame plates 9 are fixedly connected to the first electromagnet block 8, and a telescopic column 7 is connected between the two first electromagnet blocks 8. The outer wall of the sliding table 14 is fixedly connected to the second electromagnet block 15, and the two sliding tables 14 are connected by the magnetic attraction of the second electromagnet block 15. The top surface of the first pedestal 3 is fixedly connected to the distance sensor 4, and the inner wall of the frame plate 9 is provided with anti-slip stripes. A mounting block is arranged inside the base 1. The surface of the base 1 is provided with positioning holes, and the base 1 is fixed to the ground by bolts.

[0029] The effect achieved by the entire embodiment is that when the pile body is clamped by the first pedestal 3, the pile body needs to be fixed and then lifted upward, so the friction force that needs to be overcome is relatively large, the frame plate 9 is designed to be longer, and stripes are provided above the frame plate 9 to enhance the friction force to avoid slipping during the pulling out of the pile body. A counterweight block is provided inside the base 1 and is temporarily connected to the ground by screws to enhance the stability of the overall equipment. Since the clamp 16 does not need to be pulled upward when clamping the pile body, there is no need to overcome the resistance of the ground and the pile body. Therefore, the friction force requirement between the clamp 16 and the pile body is not high, and the general fixing method can meet the positioning requirements of the pile body.

[0030] The use method and working principle of the device are as follows: First, the pile body passes through the first opening 5 and the second opening 12 in sequence, the power supply of the first electromagnet block 8 is turned on, the frame plates 9 are attracted to each other by the magnetic attraction of the first electromagnet block 8, and the outer wall of the pile body is clamped and fixed by the frame plates 9;

[0031] Then, the hydraulic cylinder 2 is started, so that the output end of the hydraulic cylinder 2 drives the first pedestal 3 to lift upward, and drives the pile body to be pulled out upward, until the distance sensor 4 detects that the distance to the second pedestal 11 is close, and the hydraulic cylinder 2 stops driving the first pedestal 3 to lift;

[0032] Subsequently, the power supply of the second electromagnet block 15 is turned on, so that the second electromagnet block 15 controls the clamps 16 to mutually adsorb and clamp the outer wall of the pile body, the power supply of the first electromagnet block 8 is turned off, the pre-coated pile body of the first pedestal 3 is disconnected, and the output end of the hydraulic cylinder 2 drives the first pedestal 3 to move downward until it moves to the lower limit position;

[0033] Finally, the power supply of the first electromagnet block 8 is connected again, and the power supply of the second electromagnet block 15 is cut off, so that the first pedestal 3 is fixed to the pile body, and the second pedestal 11 is separated from the pile body, and the pile body is lifted from the bottom to the top again by using the hydraulic cylinder 2, and this operation process is repeated continuously to gradually pull and lift the pile body upward.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A hydraulic pile pulling device, comprising a base (1), characterized in that: Two hydraulic cylinders (2) are fixedly connected to the top surface of the base (1), and the output ends of the hydraulic cylinders (2) are fixedly connected to a first pedestal (3). Four corners of the top surface of the base (1) are fixedly connected to columns (10), and the top ends of the columns (10) are fixedly connected to a second pedestal (11). A second opening (12) is provided at the center of the surface of the second pedestal (11). A first opening (5) is provided on the surface of the first pedestal (3), and the inner side wall of the first opening (5) is fixedly connected to a frame (6). Both ends of the frame (6) are slidably connected to frame plates (9), and a clamp (16) is provided on the outer side wall of the second opening (12).

2. A hydraulic pile pulling device according to claim 1, characterized in that: One side of the clamp (16) is fixedly connected to a sliding platform (14), and the bottom end of the sliding platform (14) is slidably connected to a guide rail (13).

3. A hydraulic pile pulling device according to claim 2, characterized in that: The bottom surface of the guide rail (13) is fixedly connected to the top surface of the second pedestal (11), and the outer side wall of the guide rail (13) is coated with lubricant.

4. A hydraulic pile pulling device according to claim 1, characterized in that: The outer side walls of the two frame plates (9) are fixedly connected with a first electromagnet block (8), and a telescopic column (7) is connected between the two first electromagnet blocks (8).

5. A hydraulic pile pulling device according to claim 2, characterized in that: The outer side wall of the sliding platform (14) is fixedly connected with a second electromagnet block (15), and the two sliding platforms (14) are connected via the magnetic attraction of the second electromagnet block (15).

6. A hydraulic pile pulling device according to claim 1, characterized in that: A distance sensor (4) is fixedly connected to the top surface of the first pedestal (3), and anti-slip stripes are provided on the inner side wall of the frame plate (9).

7. A hydraulic pile pulling device according to claim 1, characterized in that: A mounting block is arranged inside the base (1).

8. The hydraulic pile pulling device according to claim 1, characterized in that: Positioning holes are provided on the surface of the base (1), and the base (1) is fixed to the ground by bolts.

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