Building foundation pile pulling equipment

Abstract

The utility model discloses building foundation pile pulling equipment which comprises a fixing column, a limiting groove, a lifting mechanism, a fixing cylinder, a supporting frame mechanism, a rotating mechanism, a fixing frame, a transmission mechanism, a clamping plate and a threaded rod, the limiting groove is formed in the front end of the interior of the fixing column, the lifting mechanism is arranged at the front end of the fixing column, and the supporting frame mechanism is arranged at the front end of a fixing ring. And a rotating mechanism is arranged in the supporting frame mechanism, a transmission mechanism is arranged on one side of the fixing frame, the two ends of a positioning rod are sleeved with clamping plates, and a threaded rod is fixedly connected to the lower end of a fourth motor. Compared with the prior art, the device has the advantages that the lifting mechanism is arranged to be matched with the rotating mechanism, the first motor, the connecting shaft and the like so that a pile body can be horizontally placed, follow-up manual pile body carrying is avoided, and clamping plates are arranged to be matched with non-slip mats so that friction force between the clamping plates and the pile body can be increased; soil on the two sides of the pile body is loosened through the threaded rods, so that the pile body is more stable, convenient and safe to pull out.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a pile pulling device for building foundation. Background Technique

[0002] A pile puller is a pile driving machine that uses vibration, static force or hammering action to pull out piles from the ground. For pile pulling operations, corresponding vibration pile drivers, static pile presses or double-acting steam hammers are often used, together with a pile frame and rigging. Therefore, it is also called a vibration pile sinker / puller or a static pile press / puller. In pile driving construction, vibration pile pulling is relatively common. During operation, the vibration pile puller is fixedly installed on the pile head and suspended under the hook through a spring shock absorber and rigging. When the pile puller is started, the vibration generated by the vibrator causes resonance between the pile and the soil, the soil structure is damaged, the friction between the pile body and the soil decreases, and at the same time, the rigging is tightened to gradually pull out the pile.

[0003] A pile pulling device described in the published patent No. CN219033209U, through the combined design of a lifting and pulling out structure, a shaking and pulling out structure and a clamping and fixing structure, is convenient for clamping and fixing the pile to be pulled out and then pulling it out while shaking it upward, so as to facilitate shaking and loosening the soil at the pile embedding place, thereby reducing the soil fixing force, making the pile body rise more stably during the pile pulling process, and improving the working stability during the pile pulling process. However, the existing technology still has defects:

[0004] 1. The existing technology drives the pile body to shake through the shaking and pulling out structure to loosen it for easy pulling out. However, for some piles with a long time and a deep burial depth, continuous shaking may cause the force received by the pile body during the pulling out process to exceed the ultimate stress, resulting in the fracture of the pile body. The broken pile body is more difficult to pull out, affecting the subsequent construction progress.

[0005] 2. The existing technology clamps and pulls out the pile body through the positioning clamping column, but the contact area between its structure and the pile body is small, and the friction force is also small. During the pulling out process, the pile body will slide and cannot be pulled out. Moreover, the existing technology cannot rotate and adjust the pulled out pile body, and subsequent manual placement of the pulled out pile body is time-consuming and laborious. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to solve the above problems and provide a pile pulling device for building foundation.

[0007] To solve the above technical problems, the technical solution provided by the present utility model is: a building foundation pile extraction device, including a base, a fixed column is fixedly connected to the upper end of the base, a limiting groove is opened at the front end inside the fixed column, a lifting mechanism is arranged at the front end of the fixed column, a fixed cylinder is sleeved outside the upper end of the fixed column, rotating grooves are opened at the upper and lower ends of the curved wall outside the fixed cylinder, a rack is fixedly connected inside the rotating grooves, annular clamping grooves are opened at the upper and lower ends of the rotating grooves, a lifting block is fixedly connected to the front end inside the fixed cylinder, a support frame mechanism is arranged at the front end of the fixed cylinder, a rotating mechanism is arranged inside the support frame mechanism, a connecting plate is arranged at the front end of the support frame mechanism, a first motor is fixedly connected to the middle of the rear part of the connecting plate, a connecting shaft is fixedly connected to the front end of the first motor, a U-shaped fixed frame is rotatably connected to the front end of the connecting shaft, a transmission mechanism is arranged on one side of the fixed frame, positioning rods are fixedly connected between the inner side walls of the fixed frame at the upper and lower ends, U-shaped clamping plates are sleeved at both ends of the positioning rods, anti-slip pads are fixedly connected to the upper and lower ends of the opposite sides of the clamping plates, a fourth motor is fixedly connected inside the clamping plates, and a threaded rod is fixedly connected to the lower end of the fourth motor.

[0008] As an improvement, the lifting mechanism includes a fixing plate fixedly connected to the lower part of the front end of the fixed column, a second motor is fixedly connected to the lower end of the fixing plate, bearings are fixedly connected to the upper and lower ends of the limiting groove, a lead screw is inserted inside the bearings, and a transmission belt is sleeved between the lower end of the lead screw and the upper end of the second motor.

[0009] As an improvement, the support frame mechanism includes a support plate clamped inside the rotating groove, clamping plates are fixedly connected to the upper and lower sides of the rear end of the support plate, the clamping plates are clamped inside the clamping grooves, a movable cavity is opened inside the support plate, the rear end of the support plate is fixedly connected to the connecting plate, support rods are fixedly connected between the two sides of the rear part of the two sides of the connecting plate and the support plate, and the support rods are arranged in a triangular shape.

[0010] As an improvement, the rotating mechanism includes a third motor fixedly connected to the upper end of the support plate, a second shaft rod is fixedly connected to the lower end of the third motor, the second shaft rod penetrates through the support plate, a driving gear is sleeved outside the second shaft rod, the driving gear is arranged inside the movable cavity, a driven gear is meshed with the rear end of the driving gear, and the driven gear is meshed with the rack.

[0011] As an improvement, the transmission mechanism includes a bidirectional lead screw rotatably connected between the middle parts of the two inner side walls of the fixed frame, the bidirectional lead screw penetrates through the middle of the rear part of the clamping plate, a fifth motor at the rear end of one inner side wall of the fixed frame, and a transmission belt is sleeved between one end of the bidirectional lead screw penetrating through the side wall of the fixed frame and the output end of the fifth motor.

[0012] The advantages of the present utility model compared with the prior art are as follows: 1. The present utility model sets a fixing cylinder outside the fixing column. The lifting mechanism drives the fixing cylinder to lift and lower. The rotating mechanism is set to cooperate with the rotating groove and the rack on the fixing cylinder so that the fixing frame can rotate around the fixing ring. A first motor and a bearing are arranged in the middle of the connecting plate to drive the fixing frame to rotate. After the clamping plate clamps the pile body and pulls it out, the pile body can be rotated to the horizontal direction and then rotated to one side through the rotating mechanism and placed on the ground in cooperation with the lifting mechanism. Compared with the prior art, it avoids subsequent manual handling of the pile body and saves labor.

[0013] 2. The present utility model sets a U-shaped fixing frame. Inside the fixing frame, a U-shaped clamping plate is fixed by a positioning rod and a bidirectional lead screw. The transmission mechanism drives the bidirectional lead screw to rotate to control the clamping plate to approach each other to clamp the pile body. At the same time, two anti-slip pads are respectively arranged on the opposite sides of the clamping plate to increase the contact area and friction force with the pile body to prevent the pile body from falling off. At the same time, a fifth motor is arranged at the upper end of the lower branch of the clamping plate, and a threaded rod is arranged at the lower end of the fifth motor and penetrates through the clamping plate. The lifting mechanism drives the clamping plate to descend, and the fifth motor drives the threaded rod to rotate and drill into the soil to break up the soil on both sides of the pile body to make it loose, reducing the friction force between the soil and the pile body. Then the clamping plate approaches each other to clamp and pull out the pile body. Compared with the prior art, it avoids applying too much force to the pile body to cause it to break, and increases the friction force between the clamping plate and the pile body, making the pile body more stable, convenient and safe to pull out. Description of the Drawings

[0014] Figure 1 is a three-dimensional schematic diagram of a pile pulling device for building foundations of the present utility model.

[0015] Figure 2 is a side cross-sectional schematic diagram of a pile pulling device for building foundations of the present utility model.

[0016] Figure 3 is a top cross-sectional schematic diagram of a pile pulling device for building foundations of the present utility model.

[0017] Figure 4 is an enlarged view A of a pile pulling device for building foundations of the present utility model.

[0018] Figure 5 is an enlarged view B of a pile pulling device for building foundations of the present utility model.

[0019] As shown in the figure: 1. Base; 2. Fixed column; 3. Limiting groove; 4. Lifting mechanism; 4.1. Fixed plate; 4.2. Motor 2; 4.3. Bearing; 4.4. Lead screw; 4.5. Transmission belt 1; 5. Fixed cylinder; 6. Rotating groove; 7. Rack; 8. Card slot; 9. Lifting block; 10. Support frame mechanism; 10.1. Support plate; 10.2. Card board; 10.3. Activity bin; 10.4. Support rod; 11. Rotating mechanism; 11.1. Motor 3; 11.2. Shaft rod 2; 11.3. Driving gear; 11.4. Driven gear; 12. Connecting plate; 13. Motor 1; 14. Connecting shaft; 15. Fixed frame; 16. Transmission mechanism; 16.1. Bi-directional lead screw; 16.2. Motor 5; 16.3. Transmission belt 2; 17. Positioning rod; 18. Clamping plate; 19. Anti-slip pad; 20. Motor 4; 21. Threaded rod. Specific implementation manner

[0020] The following further elaborates on the present utility model in conjunction with the attached drawings.

[0021] Combined with the attached Figure 1 In order to realize the lifting function of the device, a fixed column 2 is fixedly connected to the upper end of the base 1 of the present utility model to ensure the overall stability of the device. A limiting groove 3 is opened at the front end inside the fixed column 2 for fixing and limiting. A lifting mechanism 4 is arranged at the front end of the fixed column 2, including a fixed plate 4.1 fixedly connected to the lower part of the front end of the fixed column 2 for fixing the motor 2. The motor 2 is a bi-directional reduction motor. Bearings 4.3 are fixedly connected to the upper end and the lower end of the limiting groove 3 for rotatably connecting the lead screw 4.4. A transmission belt 4.5 is sleeved between the lower end of the lead screw 4.4 and the upper end of the motor 2. A fixed cylinder 5 is sleeved on the upper part of the outside of the fixed column 2. A lifting block 9 is fixedly connected to the front end inside the fixed cylinder 5. The lifting block 9 is sleeved outside the lead screw 4.4. The motor 2 drives the lead screw 4.4 to rotate through the transmission belt 4.5, thereby driving the lifting block 9 to be clamped in the limiting groove 3 for lifting movement.

[0022] Annular rotating grooves 6 are opened at the upper and lower ends on the outer curved wall of the fixed cylinder 5. A rack 7 is fixedly connected inside the rotating groove 6 for meshing with the rotating mechanism 11 to rotate around the fixed cylinder 5. Annular card slots 8 are opened on the upper side and the lower side of the rotating groove 6. A support frame mechanism 10 is arranged at the front end of the fixed cylinder 5, including a support plate 10.1 clamped inside the rotating groove 6. The upper and lower sides of the rear end of the support plate 10.1 are clamped inside the card slot 8 through card boards 10.2, so that the support plate 10.1 is fixed inside the rotating groove 6. An activity bin 10.3 is opened inside the support plate 10.1 for placing the rotating mechanism 11. A connecting plate 12 is fixedly connected to the rear end of the support plate 10.1. Support rods 10.5 are fixedly connected between the two sides of the rear end of the connecting plate 12 and the rear parts of the two sides of the support plate 10.1. The triangular shape between the two support rods 10.5 makes the connection between the connecting plate 12 and the fixed cylinder 5 more stable.

[0023] A motor three 11.1 is fixedly connected to the upper end of the support plate 10.1. The motor three 11.1 is a two-way rotating reduction motor. A shaft rod two 11.2 is fixedly connected to the lower end of the motor three 11.1. The shaft rod two 11.2 penetrates through the upper and lower support plates 10.1 and can rotate. An active gear 11.3 is sleeved outside the shaft rod two 11.2. The active gear 11.3 is arranged inside the movable bin 10.3. A driven gear 11.4 is meshed with the rear end of the active gear 11.3. The driven gear 11.4 is meshed with the rack 7. Thus, the motor three 11.1 drives the driven gear 11.4 to rotate and move on the rack 7 through the shaft rod two 11.2 and the active gear 11.3, so that the connecting plate 12 rotates horizontally in a circle around the fixed cylinder 5.

[0024] A motor one 13 is fixedly connected to the middle of the rear part of the connecting plate 12. A connecting shaft 14 is fixedly connected to the front end of the motor one 13. The front end of the connecting shaft 14 is rotatably connected to a U-shaped fixing bracket 15. The motor one 13 drives the connecting shaft 14 to rotate to control the rotation of the fixing bracket 15.

[0025] A positioning rod 17 is fixedly connected between the upper and lower ends of the inner side wall of the fixing bracket 15. U-shaped clamping plates 18 are sleeved at both ends of the positioning rod 17. Anti-slip pads 19 are fixedly connected to two branches on the opposite sides of the clamping plates 18 for increasing the friction force with the pile body. A transmission mechanism 16 is arranged on one side of the fixing bracket 15, including a bidirectional lead screw 16.1 rotatably connected between the middle parts of the two inner side walls of the fixing bracket 15 and penetrating through the middle of the rear parts of the two clamping plates 18. The bidirectional lead screw 16.1 is composed of two lead screws of equal length with opposite thread directions. A motor five 16.2 is arranged at the rear end of one inner side wall of the fixing bracket 15. A transmission belt two 16.3 is sleeved between one end of the bidirectional lead screw 16.1 penetrating through the side wall of the fixing bracket 15 and the output end of the motor five 16.2. The motor five 16.2 drives the double lead screw 16.1 to rotate to control the clamping plates 18 to approach or move away from each other. The positioning rod 17 limits the clamping plates to prevent them from rotating when moving.

[0026] A motor four 20 is fixedly connected to the upper end of the lower branch of the clamping plate 18. A threaded rod 21 is fixedly connected to the lower end of the motor four 20 and penetrates through the clamping plate 18 to extend to the lower part. The lower end of the threaded rod 21 is tapered to facilitate drilling into the soil. The motor four 10 drives the threaded rod 21 to rotate and cooperate with the lifting mechanism 4 to descend, so that the threaded rod 21 drills into the soil to break and loosen the soil on both sides of the pile body, making it easier to pull out the pile body.

[0027] When the present utility model is specifically implemented, such as Figure 1As shown, place the device at the location where pile extraction is required. Start motor five 16.2 to control the clamping plates 18 to approach each other through the transmission mechanism 16. Stop when it is close to the pile body. Start motor two 4.2 to drive the fixing frame 15 to descend through the lifting mechanism 4. At the same time, start motor four 20 to rotate the threaded rod 21 to drill into the soil, so as to loosen the soil on both sides of the pile body. Start motor five 16.2 again to control the clamping plates 18 to clamp the pile body, and pull out the pile body through the lifting mechanism 4. Start motor one 13 to rotate the fixing frame 15 to make the pile body in a horizontal state. Start motor three 11.1 to drive the fixing frame 15 to rotate around the fixed cylinder 5 through the rotating mechanism 11, transport the pile body to one side, and then lower it through the lifting mechanism 4 to place the pile body on the ground beside.

[0028] The above has described the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative concept of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A pile extraction device for building foundation, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected with a fixed column (2). A limit groove (3) is opened at the front end inside the fixed column (2). A lifting mechanism (4) is arranged at the front end of the fixed column (2). The upper end of the outside of the fixed column (2) is sleeved with a fixed cylinder (5). Rotating grooves (6) are opened at the upper and lower ends of the curved wall of the fixed cylinder (5). A rack (7) is fixedly connected inside the rotating grooves (6). Annular clamping grooves (8) are opened at the upper and lower ends of the rotating grooves (6). A lifting block (9) is fixedly connected at the front end inside the fixed cylinder (5). A support frame mechanism (10) is arranged at the front end of the fixed cylinder (5). A rotating mechanism (11) is arranged inside the support frame mechanism (10). A connecting plate (12) is arranged at the front end of the support frame mechanism (10). A first motor (13) is fixedly connected to the middle of the rear part of the connecting plate (12). A connecting shaft (14) is fixedly connected to the front end of the first motor (13). The front end of the connecting shaft (14) is rotatably connected with a U-shaped fixed frame (15). A transmission mechanism (16) is arranged on one side of the fixed frame (15). Positioning rods (17) are fixedly connected between the inner side walls of the fixed frame (15) at the upper and lower ends. U-shaped clamping plates (18) are sleeved at both ends of the positioning rods (17). Anti-slip pads (19) are fixedly connected to the upper and lower ends of the opposite sides of the clamping plates (18). A fourth motor (20) is fixedly connected inside the clamping plates (18). A threaded rod (21) is fixedly connected to the lower end of the fourth motor (20).

2. The pile extraction device for building foundation according to claim 1, characterized in that: The lifting mechanism (4) includes a fixing plate (4.1) fixedly connected to the lower part of the front end of the fixed column (2). A second motor (4.2) is fixedly connected to the lower end of the fixing plate (4.1). Bearings (4.3) are fixedly connected to the upper and lower ends of the limit groove (3). A lead screw (4.4) is inserted inside the bearings (4.3). A first transmission belt (4.5) is sleeved between the lower end of the lead screw (4.4) and the upper end of the second motor (4.2).

3. The pile extraction device for building foundation according to claim 1, characterized in that: The support frame mechanism (10) includes a support plate (10.1) clamped inside the rotating groove (6). Clamping plates (10.2) are fixedly connected to the upper and lower sides of the rear end of the support plate (10.1). The clamping plates (10.2) are clamped inside the clamping grooves (8). A movable chamber (10.3) is opened inside the support plate (10.1). The rear end of the support plate (10.1) is fixedly connected to the connecting plate (12). Support rods (10.4) are fixedly connected between the two sides of the rear end of the connecting plate (12) and the two sides of the rear part of the support plate (10.1). The support rods (10.4) are arranged in a triangular shape.

4. A building foundation pile extraction device according to claim 1 or claim 3, characterized in that: The rotation mechanism (11) includes a third motor (11.1) fixedly connected to the upper end of the support plate (10.1). A second shaft rod (11.2) is fixedly connected to the lower end of the third motor (11.1). The second shaft rod (11.2) penetrates through the support plate (10.1). A driving gear (11.3) is sleeved outside the second shaft rod (11.2). The driving gear (11.3) is arranged inside the movable bin (10.3). A driven gear (11.4) is meshed with the rear end of the driving gear (11.3). The driven gear (11.4) is meshed with the rack (7).

5. The pile extraction device for building foundation according to claim 1, wherein: The transmission mechanism (16) includes a bidirectional lead screw (16.1) rotatably connected between the middle parts of the two inner side walls of the fixed frame (15). The bidirectional lead screw (16.1) penetrates through the middle of the rear part of the clamping plate (18). A fifth motor (16.2) is arranged at the rear end of one inner side wall of the fixed frame (15). A second transmission belt (16.3) is sleeved between one end of the bidirectional lead screw (16.1) penetrating through the side wall of the fixed frame (15) and the output end of the fifth motor (16.2).

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