Pile pulling device for building construction

Abstract

The pile pulling device for building construction comprises a top plate and supporting legs arranged below the four corners of the top plate, a first telescopic device is vertically and fixedly arranged at the center of the top of the top plate, a telescopic rod of the first telescopic device penetrates out of the bottom of the top plate and then is coaxially connected with a lifting rod, a lifting plate is fixedly arranged at the lower end of the lifting rod, and the lifting plate is coaxially connected with the lifting rod. A hanging disc and a mounting disc are sequentially arranged on the hoisting rod above the hoisting plate from bottom to top; gear teeth are uniformly arranged on the edge of the hanging scaffold in the circumferential direction, pinions meshed with the gear teeth are rotatably arranged below the edge of the mounting disc, a driving mechanism for driving the pinions to rotate is fixedly arranged above the mounting disc, and two guide columns are vertically arranged in the middle of each of the left side and the right side of the top plate; limiting blocks matched with the distance between the two guide columns on the same side of the top plate are fixedly arranged on the edge of the mounting disc. And a clamping mechanism is arranged at the bottom of the hanging scaffold. The pile pulling device is stable and reliable in pile pulling process, small in damage to the geology around the foundation pile, easy in pile pulling and high in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a pile extraction device for building construction. Background Technology

[0002] Construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of structures, or the process of turning the lines on design drawings into physical objects at designated locations. It includes foundation construction, main structure construction, roofing construction, and decoration construction. The site where construction work takes place is called the "construction site" or "worksite." During construction, special extraction devices are needed to pull foundation piles out of trenches.

[0003] The basic principle of current pile extraction technology and specialized equipment is to disrupt the compressive force of the surrounding geology on the pile, loosen the soil around the pile, reduce the friction between the soil and the pile, and then use appropriate lifting machinery for swinging and pulling. However, using lifting machinery not only increases costs significantly but also causes serious damage to the surrounding geology and can easily damage the inner diameter of the newly driven pile during the swinging and pulling process. Furthermore, existing pile extraction equipment is mostly placed directly on the ground, making it prone to movement during the extraction process and affecting the extraction efficiency.

[0004] To address this issue, a pile extraction device for building construction needs to be developed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a pile extraction device for building construction that is stable and reliable in the pile extraction process, causes little damage to the geological conditions around the pile, and is easy and efficient in pile extraction.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A pile extraction device for building construction includes a top plate and legs set below the four corners of the top plate. A first telescopic device is vertically fixed at the center of the top of the top plate. The telescopic rod of the first telescopic device passes through the bottom of the top plate and is coaxially connected to a lifting rod. A hanging plate is fixed at the lower end of the lifting rod. A hanging plate and an installation plate are arranged sequentially from bottom to top on the lifting rod above the hanging plate.

[0008] The edge of the hanging plate is evenly provided with gear teeth in the circumferential direction. The lower edge of the mounting plate is provided with a small gear that meshes with the gear teeth. A drive mechanism for driving the small gear to rotate is fixed above the mounting plate. Two guide columns are vertically provided in the middle of the left and right sides of the top plate. A limiting block with a spacing adapted to the two guide columns on the same side of the top plate is fixed at the edge of the mounting plate.

[0009] The bottom of the hanging platform is equipped with a clamping mechanism.

[0010] In one embodiment of this utility model, two mounting plates are symmetrically arranged at the bottom of the hanging plate, a plurality of guide rods are arranged between the two mounting plates, and two clamping blocks are symmetrically arranged between the two mounting plates. A guide block is fixedly provided on the top of the clamping block, and a through hole corresponding to the guide rod is opened on the guide block. A second telescopic device is fixedly provided on the outside of the mounting plate, and the telescopic rod of the second telescopic device passes through the inside of the mounting plate and presses against the outside of the clamping block.

[0011] In one embodiment of this utility model, a sliding groove is provided at the bottom of the guide post, and a slider is provided in the sliding groove that can slide up and down. The upper end of the slider is connected to a third telescopic device fixed at the upper part of the sliding groove, and the lower end of the slider is connected to the upper end of a cone rod that passes through the lower end of the guide post.

[0012] In one embodiment of this utility model, a lifting mechanism is fixedly provided between two guide columns on the same side of the top plate along the vertical direction. The moving block and the limiting block of the lifting mechanism are fixedly connected together, and the lifting mechanism and the first telescopic device lift and lower synchronously.

[0013] In one embodiment of this utility model, at least two pinions are evenly arranged circumferentially below the mounting plate, and multiple pinions rotate synchronously; the bottom of the support leg is equipped with a universal wheel with a brake pad.

[0014] In one embodiment of this utility model, the lifting plate is rotatably sleeved on the lifting rod, and the mounting plate can be fixedly or movably mounted on the lifting rod.

[0015] In one embodiment of this utility model, the drive mechanism includes a speed reducer and a servo motor connected together, and the output shaft of the speed reducer is connected to the rotating shaft of the pinion.

[0016] As one embodiment of this utility model, the inner side of the clamping block is provided with an arc-shaped clamping groove that is adapted to the outer diameter of the foundation pile.

[0017] In one embodiment of this utility model, the first telescopic device, the second telescopic device, and the third telescopic device are electric screws or hydraulic rods.

[0018] In one embodiment of this utility model, the lifting mechanism adopts a rodless hydraulic cylinder or a reciprocating screw.

[0019] The beneficial effects of adopting the above technical solution are as follows:

[0020] The pile extraction device for building construction provided by this utility model first clamps the pile using a clamping mechanism, and then lifts it upwards using a first telescopic device. During the lifting process, a drive mechanism drives a small gear to rotate the lifting platform, thereby rotating the pile. This reduces the friction between the pile and the trench, minimizes damage to the surrounding geological conditions, reduces the difficulty of pile extraction, and improves extraction efficiency. By evenly arranging multiple small gears around the lifting platform circumferentially, the driving force is increased, and the platform is also limited and balanced in terms of force, preventing damage to the first telescopic device if the platform's position shifts horizontally.

[0021] The lower end of the guide column is equipped with a tapered rod that can be raised and lowered. When the pile is being pulled out, the tapered rod is inserted below the ground surface to prevent the pile pulling device from shifting its position during the process, making the pile pulling process more stable and reliable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model from another angle.

[0024] Figure 3 This is another angular structural schematic diagram of this utility model.

[0025] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the guide post and cone rod in this utility model.

[0027] Figure 6 This is another structural schematic diagram of this utility model.

[0028] The components are as follows: 1. Top plate, 2. Support legs, 3. Casters, 4. First telescopic device, 5. Lifting rod, 6. Lifting plate, 7. Lifting tray, 8. Gear teeth, 9. Mounting plate, 10. Guide rod, 11. Clamping block, 1101. Guide block, 12. Clamping groove, 13. Second telescopic device, 14. Guide column, 1401. Slide groove, 15. Conical rod, 16. Sliding block, 17. Third telescopic device, 18. Mounting plate, 19. Limiting block, 20. Drive mechanism, 21. Pinion, 22. Lifting mechanism. Detailed Implementation

[0029] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0030] like Figures 1-4The pile extraction device for building construction shown includes a top plate 1 and support legs 2 set below the four corners of the top plate 1. A first telescopic device 4 is vertically fixed at the center of the top of the top plate 1. The telescopic rod of the first telescopic device 4 passes through the bottom of the top plate 1 and is coaxially connected to the lifting rod 5. A hanging plate 6 is fixed at the lower end of the lifting rod 5. A hanging plate 7 and an installation plate 18 are arranged sequentially from bottom to top on the lifting rod 5 above the hanging plate 6.

[0031] The hanging plate 7 has evenly spaced gear teeth 8 around its edge. The mounting plate 18 has a small gear 21 rotatably positioned below its edge that meshes with the gear teeth 8. A drive mechanism 20 for rotating the small gear 21 is fixed above the mounting plate 18. Two guide posts 14 are vertically positioned in the middle of the left and right sides of the top plate 1. A limiting block 19 with a spacing matching the two guide posts 14 on the same side as the top plate 1 is fixed at the edge of the mounting plate 18 to restrict the rotational movement of the mounting plate 18.

[0032] The bottom of the hanging plate 7 is equipped with a clamping mechanism.

[0033] The pile extraction device for building construction provided by this utility model first clamps the pile with a clamping mechanism, and then lifts it upwards through the first telescopic device 4. During the lifting process, the drive mechanism 20 drives the pinion 21 to rotate the lifting plate 7, thereby driving the pile to rotate. This can reduce the friction between the pile and the trench, minimize damage to the geological conditions around the pile, reduce the difficulty of pile extraction, and improve the efficiency of pile extraction.

[0034] In this embodiment, two vertical mounting plates 9 are symmetrically arranged at the bottom of the hanging plate 7. A plurality of guide rods 10 are arranged between the two mounting plates 9. In this embodiment, there are two guide rods 10. Two clamping blocks 11 are symmetrically arranged between the two mounting plates 9. A guide block 1101 is fixedly provided on the top of the clamping block 11. The guide block 1101 has through holes corresponding to the guide rods 10. A second telescopic device 13 is fixedly provided on the outside of the mounting plate 9. The telescopic rod of the second telescopic device 13 passes through the inside of the mounting plate 9 and pushes against the outside of the clamping block 11. The telescopic rod of the second telescopic device 13 is fixedly connected to the outside of the clamping block 11.

[0035] like Figure 5 As shown, the bottom of the guide column 14 is provided with a sliding groove 1401, and a slider 16 is slidably disposed within the sliding groove 1401. The upper end of the slider 16 is connected to a third telescopic device 17 fixed to the upper part of the sliding groove 1401, and the lower end of the slider 16 is connected to the upper end of a cone rod 15 extending from the lower end of the guide column 14. The lower end of the cone rod 15 is pointed. The cone rod 15 is provided at the lower end of the guide column 14 and can be raised and lowered. When the pile is extracted, the cone rod 15 is inserted below the ground surface, which can prevent the pile extraction device from shifting its position during the pile extraction process, making the pile extraction process more stable and reliable.

[0036] like Figure 6 As shown, a lifting mechanism 22 is fixed vertically between two guide columns 14 on the same side of the top plate 1. The moving block of the lifting mechanism is fixedly connected to the limiting block 19, and the lifting mechanism rises and falls synchronously with the first telescopic device 4. By setting up the lifting mechanism 22, the edge of the mounting plate 18 can be raised and lowered, which to a certain extent shares the lifting pressure of the first telescopic device 4, while maintaining the overall levelness of the mounting plate 18 and preventing the outer edge of the mounting plate 18 from sagging under the action of gravity.

[0037] As a further optimization, at least two pinions 21 are evenly arranged circumferentially below the mounting plate 18, and the multiple pinions 21 rotate synchronously. In this embodiment, there are two pinions 21, located inside the two limiting blocks 19 respectively. By evenly arranging multiple pinions 21 circumferentially around the hanging plate 7, the driving force can be increased, and the hanging plate 7 can be limited and the force on the hanging plate 7 can be balanced, preventing damage to the first telescopic device 4 if the position of the hanging plate 7 is horizontally offset.

[0038] The bottom of the outrigger 2 is equipped with casters 3 with brake pads, which facilitates the movement of the pile-pulling device.

[0039] The lifting plate 7 is rotatably mounted on the lifting rod 5. The mounting plate 18 can be fixed or movably mounted on the lifting rod 5. Preferably, the mounting plate 18 is movably mounted on the lifting rod 5, that is, the through hole in the middle of the mounting plate 18 is larger than the outer diameter of the lifting rod 5, which facilitates the disassembly and maintenance of the entire device.

[0040] As a further optimization, bearings are provided between the lifting platform 7 and the lifting rod 5, the lifting plate 6 and the mounting plate 18 to reduce the frictional force of the lifting platform 7 during rotation.

[0041] In this embodiment, the drive mechanism 20 includes a connected reducer and a servo motor, with the output shaft of the reducer connected to the rotating shaft of the pinion 21. The clamping block 11 has an arc-shaped clamping groove 12 on its inner side that matches the outer diameter of the foundation pile. The first telescopic device 4, the second telescopic device 13, and the third telescopic device 17 are electric screws or hydraulic rods. The lifting mechanism uses a rodless hydraulic cylinder or a reciprocating lead screw.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pile extraction device for building construction, characterized in that: It includes a top plate (1) and support legs (2) set below the four corners of the top plate (1). A first telescopic device (4) is vertically fixed at the center of the top of the top plate (1). The telescopic rod of the first telescopic device (4) passes through the bottom of the top plate (1) and is coaxially connected to the lifting rod (5). A hanging plate (6) is fixed at the lower end of the lifting rod (5). A hanging plate (7) and an installation plate (18) are arranged on the lifting rod (5) from bottom to top above the hanging plate (6). The hanging plate (7) has teeth (8) evenly arranged around its edge. The mounting plate (18) has a small gear (21) rotatably arranged below its edge that meshes with the teeth (8). The mounting plate (18) has a drive mechanism (20) fixed above it that drives the small gear (21) to rotate. The top plate (1) has two guide posts (14) vertically arranged in the middle of both sides. The mounting plate (18) has a limiting block (19) fixed at its edge that matches the spacing between the two guide posts (14) on the same side as the top plate (1). The bottom of the hanging plate (7) is provided with a clamping mechanism.

2. The pile extraction device for building construction according to claim 1, characterized in that: The bottom of the hanging plate (7) is symmetrically provided with two mounting plates (9), and a number of guide rods (10) are provided between the two mounting plates (9). Two clamping blocks (11) are symmetrically provided between the two mounting plates (9). A guide block (1101) is fixedly provided on the top of the clamping block (11), and a through hole corresponding to the guide rod (10) is opened on the guide block (1101). A second telescopic device (13) is fixedly provided on the outside of the mounting plate (9). The telescopic rod of the second telescopic device (13) passes through the inside of the mounting plate (9) and pushes against the outside of the clamping block (11).

3. A pile extraction device for building construction according to claim 2, characterized in that: The bottom of the guide post (14) is provided with a sliding groove (1401), and a slider (16) is provided in the sliding groove (1401) that can slide up and down. The upper end of the slider (16) is connected to the third telescopic device (17) fixed on the upper part of the sliding groove (1401), and the lower end of the slider (16) is connected to the upper end of the cone rod (15) that passes through the lower end of the guide post (14).

4. A pile extraction device for building construction according to claim 1, characterized in that: A lifting mechanism (22) is fixedly installed between two guide columns (14) on the same side of the top plate (1) along the vertical direction. The moving block and the limiting block (19) of the lifting mechanism are fixedly connected together. The lifting mechanism and the first telescopic device (4) lift and lower synchronously.

5. A pile extraction device for building construction according to claim 4, characterized in that: At least two pinions (21) are evenly arranged circumferentially below the mounting plate (18), and multiple pinions (21) rotate synchronously; the bottom of the support leg (2) is equipped with a universal wheel (3) with a brake pad.

6. A pile extraction device for building construction according to any one of claims 1-5, characterized in that: The lifting plate (7) is rotatably mounted on the lifting rod (5), and the mounting plate (18) can be fixed or movably mounted on the lifting rod (5).

7. A pile extraction device for building construction according to claim 6, characterized in that: The drive mechanism (20) includes a speed reducer and a servo motor connected together, and the output shaft of the speed reducer is connected to the shaft of the pinion (21).

8. A pile extraction device for building construction according to claim 2, characterized in that: The clamping block (11) has an arc-shaped clamping groove (12) on its inner side that is adapted to the outer diameter of the foundation pile.

9. A pile extraction device for building construction according to claim 3, characterized in that: The first telescopic device (4), the second telescopic device (13) and the third telescopic device (17) are electric screws or hydraulic rods.

10. A pile extraction device for building construction according to claim 4, characterized in that: The lifting mechanism uses a rodless hydraulic cylinder or a reciprocating lead screw.

Images