A pipe pile lifting device

Abstract

The present invention relates to the technical field of pipe pile hoisting, and specifically discloses a pipe pile hoisting device, which includes: two symmetrically arranged hoisting boxes, a sling is arranged between the two hoisting boxes, a turntable and a supporting plate are arranged inside the hoisting box, and there are three supporting plates which can approach each other and gather towards the turntable as the turntable rotates; a suspension rod is also hinged on the hoisting box, the suspension rod can rotate up and down relative to the hoisting box, and the bottom end of the suspension rod extends to one side of the turntable and can drive the turntable to rotate during rotation and elevation; for the pipe pile hoisting device of the present invention, the gravity of the pipe pile compresses the suspension rod to rotate, so that the suspension rod pushes the turntable to rotate to make the supporting plate contract to support the pipe pile from the bottom, that is, the pressure of the pipe pile received by the suspension rod is converted into the supporting force of the bottom supporting plate on the pipe pile. Under the mutual cooperation of the suspension rod and the supporting plate, double support is carried out from the inner side and the outer side of the pipe pile, so that the suspension rod and the supporting plate jointly bear the pressure of the pipe pile, avoiding single-sided pressure on the suspension rod and the supporting plate and reducing the risk of breaking.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe pile hoisting, and specifically relates to a pipe pile hoisting device. Background Art

[0002] Pipe piles are a common type of pile foundation, widely used in construction projects, bridge projects, and foundation reinforcement. Pipe piles are usually made of steel pipes, concrete, or other materials, with strong bearing capacity and compressive resistance, suitable for foundation projects under various geological conditions. Pipe piles are usually hollow cylinders, with a steel pipe or reinforced concrete pipe on the outside and concrete that can be filled inside. Common pipe piles include steel pipe piles, concrete pipe piles, and reinforced concrete pipe piles. Because of the strong external structure of the pipe pile and the high strength of the internal filling material, it can effectively transfer the upper load and provide sufficient support. Due to the large self-weight of the pipe pile, hoisting equipment is usually required for handling during movement.

[0003] In the patent document with the publication number CN216836775U, a quick and easy sling for prestressed pipe pile hoisting is disclosed, including 2 sling bodies, through holes provided on one side of the upper end of the sling body, and seamless slings passing through the through holes and connected to the sling body, which can significantly improve the hoisting efficiency of prestressed pipe piles, reduce the labor of workers, and is safe and reliable during use. The strength of the quick and easy sling fully meets the hoisting requirements, and the quality of the prestressed pipe pile is intact after hoisting. Through further anti-drop steel wires, the use safety can be ensured.

[0004] However, there are still the following problems in this solution. When hoisting the pipe pile, only the bottom of the U-shaped sling provides single support for the pipe pile. The U-shaped sling is stressed at a single point, and all the pressure of the pipe pile is borne by the lower half of the U-shaped sling. When the hook is broken due to excessive stress, the pipe pile will fall off instantly and cannot be buffered and supported, which will cause damage to the pipe pile and the safety factor is relatively low. Summary of the Invention

[0005] The present invention provides a pipe pile hoisting device, aiming to solve the problem in the related technology that when the U-shaped sling provides single support for the pipe pile, the U-shaped sling is stressed at a single point, and when the hook is broken due to excessive stress, the pipe pile will fall off instantly and cannot be buffered and supported.

[0006] The pipe pile hoisting device of the present invention includes two symmetrically arranged hoisting boxes, a sling is arranged between the two hoisting boxes, and a turntable and a supporting plate are arranged inside the hoisting box. There are three supporting plates, and they can approach each other and gather towards the turntable as the turntable rotates;

[0007] A suspension rod is also hinged on the hoisting box. The suspension rod can rotate up and down relative to the hoisting box, and the bottom end of the suspension rod extends to one side of the turntable and can drive the turntable to rotate when rotating and rising;

[0008] On one side of the turntable, a ratchet gear and a brake rod are provided. The ratchet gear is fixedly coaxially mounted with the turntable. The brake rod is located between two adjacent teeth of the ratchet gear and can move up and down relative to the ratchet gear, for restricting the ratchet gear to rotate only in one direction and preventing it from rotating back.

[0009] Preferably, a circular cavity and a slideway are formed inside the lifting box. The circular cavity is located at the central part of the lifting box. There are three slideways evenly distributed annularly inside the lifting box, and the slideways are arranged along the radial direction of the circular cavity and communicate with it. The turntable is located inside the circular cavity. The support plate is an L-shaped plate composed of a vertical part and a horizontal part. The vertical parts of the three support plates are respectively slidably assembled in the three slideways.

[0010] Preferably, three arc-shaped frames are evenly distributed annularly outside the turntable. A connecting shaft is arranged inside the arc-shaped frame. An installation groove is formed inside the vertical part of the support plate, and the connecting shaft is horizontally fixed inside the installation groove.

[0011] Preferably, a lifting ring is arranged on the horizontal part of one of the support plates, and this support plate is located directly above the suspension rod. Both ends of the suspension cable are arranged inside the lifting rings of the support plates in the two lifting boxes.

[0012] Preferably, a support shaft is rotatably assembled inside the circular cavity, and the support shaft is coaxially arranged with the circular cavity. The turntable is fixedly coaxially mounted outside the support shaft, and a knob located outside the lifting box is fixedly installed at the end of the support shaft.

[0013] Preferably, a vertical groove communicating with the circular cavity is formed on the side wall of the lifting box, and hinge seats are arranged on both sides of the vertical groove. The suspension rod is rotatably assembled in the hinge seats and is inclined.

[0014] Preferably, a transmission groove is formed on one side of the turntable close to the suspension rod. An arc-shaped part is arranged inside the transmission groove. The bottom end of the suspension rod extends into the circular cavity and a convex shaft located inside the transmission groove is fixedly installed, and the convex shaft is located below the arc-shaped part and is in close contact with the arc-shaped part.

[0015] Preferably, a sliding seat is fixedly installed at the end of the brake rod. A vertical sliding groove is formed on one side of the lifting box close to the ratchet gear, and the sliding seat is slidably assembled inside the sliding groove. A pull ring located outside the lifting box is fixedly installed on the sliding seat.

[0016] Preferably, one side of the tooth of the ratchet gear is an arc-shaped surface, and the other side of the tooth of the ratchet gear is a vertical surface, which is arranged along the radial direction of the ratchet gear.

[0017] Preferably, the brake rod is a semi-cylindrical body. One side surface is a semi-circular surface and is in contact with the arc-shaped surface of the adjacent tooth, and the other side surface is a horizontal surface and is in contact with the vertical surface of the other adjacent tooth.

[0018] Beneficial effects:

[0019] 1. When the present invention is in use, during the hoisting of the pipe pile, the gravity of the pipe pile compresses the suspension rod to rotate, causing the suspension rod to push the turntable to rotate so that the support plate contracts to support the pipe pile from the bottom, that is, converting the pressure of the pipe pile received by the suspension rod into the supporting force of the bottom support plate on the pipe pile. With the mutual cooperation of the suspension rod and the support plate, double support is carried out from the inner side and the outer side of the pipe pile, enabling the suspension rod and the support plate to jointly bear the pressure of the pipe pile, avoiding unilateral pressure on the suspension rod and the support plate, and reducing the risk of breakage.

[0020] 2. When the present invention is in use, under the restriction of the locking mechanism, the turntable can only rotate in one direction, making the support plate can only contract towards the middle and cannot be released towards the periphery. Therefore, the greater the pressure of the pipe pile on the suspension rod, the greater the supporting force of the support plate on the pipe pile. When the pressure of the pipe pile on the suspension rod decreases, the supporting force of the support plate will not decrease. If any one of the suspension rod inside the pipe pile and the support plate at the bottom breaks accidentally, the other can continue to support and buffer the pipe pile, preventing the instantaneous detachment of the pipe pile and improving the safety factor during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention.

[0022] Figure 2 is a schematic diagram of the pipe pile hoisting state of the present invention.

[0023] Figure 3 is a perspective view of the hoisting box of the present invention.

[0024] Figure 4 is a perspective view of the hoisting box of the present invention from another angle.

[0025] Figure 5 is a schematic diagram of the internal structure of the hoisting box of the present invention.

[0026] Figure 6 is a schematic diagram of the internal structure of the hoisting box of the present invention from another angle.

[0027] Figure 7 is a perspective view of the turntable and the support plate of the present invention.

[0028] Figure 8 is a perspective view of the brake rod of the present invention.

[0029] Figure 9 is a side sectional view of the hoisting box of the present invention.

[0030] Figure 10 is a front view of the support plate of the present invention.

[0031] Reference Signs:

[0032] 10. Hoisting box; 11. Circular cavity; 12. Slideway; 13. Vertical groove; 14. Hinge seat; 15. Chute; 20. Suspension rod; 30. Bracket; 31. Support shaft; 311. Knob; 32. Turntable; 33. Support plate; 331. Installation groove; 332. Suspension ring; 40. Connection assembly; 41. Arc-shaped frame; 42. Connection shaft; 50. Transmission mechanism; 51. Convex shaft; 52. Transmission groove; 53. Arc-shaped part; 60. Locking mechanism; 61. Ratchet gear; 62. Brake rod; 621. Slide block; 622. Pull ring. Detailed implementation manner

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as a limitation to the present invention.

[0034] As Figures 1 to 10 shown, the pipe pile hoisting equipment of the present invention includes a hoisting box 10, a suspension rod 20, a bracket 30, a connection assembly 40, a transmission mechanism 50, and a locking mechanism 60. There are two hoisting boxes 10 which are symmetrically arranged. A suspension cable is arranged between the two hoisting boxes 10. The suspension rod 20 and the bracket 30 are both arranged in the hoisting box 10. The suspension rod 20 is located on one side opposite to the two hoisting boxes 10 and is used to support the inner side of the pipe pile. When the suspension rod 20 supports the inner side of the pipe pile, the bracket 30 can contract under the cooperation of the transmission mechanism 50 and the connection assembly 40, and then support the outer side of the pipe pile. The locking mechanism 60 is arranged between the bracket 30 and the hoisting box 10 and can lock the contracted bracket 30 to prevent the bracket 30 from loosening during the hoisting of the pipe pile.

[0035] Refer to Figure 3 and Figure 9 , a circular cavity 11 and a slideway 12 are formed inside the hoisting box 10. The circular cavity 11 is located at the central part of the hoisting box 10. There are three slideways 12 which are evenly distributed in a ring in the hoisting box 10, and the slideways 12 are arranged along the radial direction of the circular cavity 11 and are connected to the circular cavity 11, so that the circular cavity 11 is connected to the outside of the hoisting box 10 through the slideways 12, which is convenient for the installation of the bracket 30. A vertical groove 13 communicating with the circular cavity 11 is formed on the side wall of the hoisting box 10, and hinge seats 14 are arranged on both sides of the vertical groove 13.

[0036] Refer to Figure 3 , the suspension rod 20 is rotatably assembled in the hinge seat 14 and is inclined. It can rotate up and down in the hinge seat 14. The top end of the suspension rod 20 is located outside the hoisting box 10, and the bottom end of the suspension rod 20 extends into the interior of the circular cavity 11. Moreover, the length of the suspension rod 20 outside the hoisting box 10 is greater than the length inside the hoisting box 10. A torsion spring is arranged between the suspension rod 20 and the hinge seat 14, so that the suspension rod 20 can maintain an inclined state.

[0037] Reference Figure 5 With Figure 7 , the bracket 30 is composed of a support shaft 31, a turntable 32 and a support plate 33. The support shaft 31 is rotationally assembled inside the circular cavity 11 and is coaxially arranged with the circular cavity 11. The turntable 32 is coaxially fixed outside the support shaft 31. The support plate 33 has three L-shaped plates each composed of a vertical part and a horizontal part. The vertical parts of the three support plates 33 are respectively slidably assembled inside the three slideways 12, and the end of the support plate 33 is arranged on one side of the turntable 32. When the turntable 32 and the support shaft 31 rotate, the turntable 32 can drive the support plate 33 to slide in the slideway 12 under the cooperation of the connection assembly 40, so that the three support plates 33 approach or separate from each other. A knob 311 located outside the lifting box 10 is fixedly installed at the end of the support shaft 31, so that the support shaft 31 can be rotated externally to rotate the turntable 32.

[0038] Reference Figure 9 , the connection assembly 40 includes an arc-shaped frame 41 and a connection shaft 42. There are three arc-shaped frames 41 which are all fixedly installed on the side wall of the turntable 32 and are evenly distributed in a ring. The connection shaft 42 is arranged inside the arc-shaped frame 41 and is fixed to the support plate 33. When the turntable 32 drives the arc-shaped frame 41 to rotate, the arc-shaped frame 41 can push the connection shaft 42 to slide inside it, and then drive the support plate 33 to slide along the slideway 12, so that the support plate 33 approaches or moves away from the turntable 32, and then realizes the gathering and dispersion between the three support plates 33.

[0039] Reference Figure 9 With Figure 10 , an installation groove 331 is formed in the vertical part of the support plate 33. The connection shaft 42 is horizontally fixed inside the installation groove 331, and the arc-shaped frame 41 extends into the installation groove 331. The installation groove 331 is convenient for installing and fixing the connection shaft 42. While the arc-shaped frame 41 can better push the connection shaft 42, it can also save the internal space of the lifting box 10. A lifting ring 332 is arranged on the horizontal part of one of the support plates 33, and this support plate 33 is located directly above the suspension rod 20. The end of the sling is arranged inside the lifting ring 332.

[0040] In other embodiments, the connection assembly 40 can also be a traction rope, which connects and fixes the vertical part of the support plate 33 and the turntable 32. The traction rope is wound up during the rotation of the turntable 32, and then the gathering and contraction of the support plate 33 are realized to support the outside of the pipe pile.

[0041] Reference Figure 5 With Figure 7The transmission mechanism 50 includes a convex shaft 51 and a transmission groove 52. The convex shaft 51 is fixedly installed at the bottom end of the suspension rod 20. The transmission groove 52 is formed on one side of the turntable 32 close to the suspension rod 20. The convex shaft 51 extends into the interior of the transmission groove 52. An arc portion 53 is provided inside the transmission groove 52. The convex shaft 51 is located below the arc portion 53 and is arranged in close contact with the arc portion 53. When the suspension rod 20 is pressed and rotates in the hinge seat 14, the bottom end of the suspension rod 20 gradually rises, so that the convex shaft 51 pushes the turntable 32 to rotate through the arc portion 53 in the transmission groove 52 during the rising process, and then drives the support plate 33 to slide in the slideway 12.

[0042] Reference Figure 6 The locking mechanism 60 includes a ratchet gear 61 and a brake rod 62. The ratchet gear 61 is coaxially fixed on the side wall of the turntable 32. The brake rod 62 is arranged inside the circular cavity 11, between two adjacent teeth of the ratchet gear 61, and can move up and down relative to the ratchet gear 61. One side of the tooth of the ratchet gear 61 is an arc surface, and the other side of the tooth of the ratchet gear 61 is a vertical surface, which is arranged along the radial direction of the ratchet gear 61. The brake rod 62 is a semi-cylinder, and one side surface thereof is a semi-circular surface, which is in contact with the arc surface of the adjacent tooth, so that the tooth can push the brake rod 62 to rise during the rotation of the ratchet gear 61. The other side surface of the brake rod 62 is a horizontal surface, which is in contact with the vertical surface of the adjacent tooth on the other side, and can block the tooth of the ratchet gear 61 by the brake rod 62, so that the ratchet gear 61 cannot rotate back, and the tooth will not block the brake rod 62 during the active lifting of the brake rod 62.

[0043] Reference Figure 4 、 Figure 6 And Figure 8 A sliding seat 621 is fixedly installed at the end of the brake rod 62. A vertical sliding groove 15 is formed on one side of the hoisting box 10 close to the ratchet gear 61. The sliding seat 621 is slidably assembled inside the sliding groove 15. By sliding the sliding seat 621 in the sliding groove 15, the brake rod 62 can be raised to disengage from the ratchet gear 61, and then the restriction on the ratchet gear 61 can be released, so that the ratchet gear 61 can rotate back to its original position. A pull ring 622 located outside the hoisting box 10 is fixedly installed on the sliding seat 621 to facilitate pulling the sliding seat 621 to slide in the sliding groove 15.

[0044] Working principle: Insert the suspension rods 20 on the two hoisting boxes 10 into the two ends of the pipe pile respectively. Lift the hoisting box 10 by winding the traction cable of the hoisting machine. During the lifting of the hoisting box 10, the suspension rod 20 is blocked by the pipe pile and gradually rotates in the hinge seat 14. The convex shaft 51 at the bottom end of the suspension rod 20 rises and pushes the turntable 32 to rotate through the arc portion 53 in the transmission groove 52, so that the arc-shaped frame 41 pushes the connecting shaft 42, driving the support plate 33 to slide along the slideway 12. The three support plates 33 gather towards the pipe pile, converting the pressure of the pipe pile on the suspension rod 20 into the supporting force of the support plate 33 on the pipe pile;

[0045] After the two pallets 33 below are abutted against both sides of the bottom of the pipe pile, the pallets 33 are restricted by the pipe pile and cannot move further. The suspension rod 20 is tightened inside the pipe pile and cannot rotate further, and then supports the pipe pile from the inside. At the same time, the turntable 32 is restricted by the ratchet gear 61 and the brake rod 62 and cannot rotate back, and then restricts the pallet 33 from sliding out of the lifting box 10 under the pressure of the pipe pile, so that the pallet 33 keeps close to the outer wall of the pipe pile and lifts the pipe pile. The pipe pile is lifted by the double support of the suspension rod 20 and the pallet 33;

[0046] After the pipe pile is lifted to the designated position, pull the pull ring 622 to make the sliding seat 621 slide in the chute 15, drive the brake rod 62 to rise and disengage from the ratchet gear 61, release the restriction on the ratchet gear 61, so that the turntable 32 can rotate back, and the suspension rod 20 and the pallet 33 can be reset, and then the lifting box 10 is removed from the end of the pipe pile.

[0047] Beneficial effects: During the lifting of the pipe pile, the gravity of the pipe pile presses the suspension rod 20 to rotate, so that the suspension rod 20 pushes the turntable 32 to rotate to make the pallet 33 contract to support the pipe pile from the bottom, that is, the pressure of the pipe pile on the suspension rod 20 is converted into the supporting force of the bottom pallet 33 on the pipe pile. With the cooperation of the suspension rod 20 and the pallet 33, double support is carried out from the inside and outside of the pipe pile, so that the suspension rod 20 and the pallet 33 jointly bear the pressure of the pipe pile, avoiding the single-sided pressure on the suspension rod 20 and the pallet 33 and reducing the risk of breakage. And under the restriction of the locking mechanism 60, the turntable 32 can only rotate in one direction, so that the pallet 33 can only contract inwards and cannot be released outwards. Therefore, the greater the pressure of the pipe pile on the suspension rod 20, the greater the supporting force of the pallet 33 on the pipe pile. When the pressure on the suspension rod 20 decreases, the supporting force of the pallet 33 will not decrease. If any one of the suspension rod 20 inside the pipe pile and the pallet 33 at the bottom breaks accidentally, the other can continue to support and buffer the pipe pile, and the pipe pile will not fall off instantly, improving the safety factor during the lifting process.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipe pile lifting device, comprising two symmetrically arranged lifting boxes (10), a lifting rope is arranged between the two lifting boxes (10), characterized in that: A turntable (32) and a support plate (33) are arranged inside the lifting box (10); there are three support plates (33) which can move closer to each other and gather towards the turntable (32) as the turntable (32) rotates; A suspension rod (20) is also hingedly connected to the lifting box (10). The suspension rod (20) can rotate up and down relative to the lifting box (10), and the bottom end of the suspension rod (20) extends to one side of the rotating disk (32), and can drive the rotating disk (32) to rotate during the rotation and elevation. A ratchet gear (61) and a brake lever (62) are provided on one side of the rotating disk (32); the ratchet gear (61) and the rotating disk (32) are coaxially fixed; the brake lever (62) is located between two adjacent gear teeth of the ratchet gear (61) and can move up and down relative to the ratchet gear (61) to limit the ratchet gear (61) to only rotate in one direction and not to rotate back.

2. The pipe pile lifting equipment according to claim 1, characterized in that: The hoisting box (10) is provided with a circular cavity (11) and a slideway (12) inside. The circular cavity (11) is located at the center of the hoisting box (10). The slideway (12) has three rings evenly distributed in the hoisting box (10), and the slideway (12) is arranged along the radial direction of the circular cavity (11) and is connected thereto. The turntable (32) is located in the circular cavity (11). The support plate (33) is an L-shaped plate composed of a vertical portion and a horizontal portion. The vertical portions of the three support plates (33) are slidably assembled in the three slideways (12) respectively.

3. The pipe pile lifting equipment according to claim 2, characterized in that: The outer ring of the rotating disk (32) is evenly distributed with three arc-shaped frames (41), the interior of the arc-shaped frames (41) is provided with a connecting shaft (42), the vertical portion of the supporting plate (33) is provided with a mounting groove (331), and the connecting shaft (42) is transversely fixed inside the mounting groove (331).

4. The pipe pile lifting equipment according to claim 3, characterized in that: A lifting ring (332) is provided on the transverse portion of one of the support plates (33), and the support plate (33) is located directly above the suspension rod (20), and both ends of the sling are arranged in the lifting ring (332) of the support plate (33) in the two lifting boxes (10).

5. The pipe pile lifting equipment according to claim 4, characterized in that: The circular cavity (11) is rotatably equipped with a support shaft (31), and the support shaft (31) is coaxially arranged with the circular cavity (11). The turntable (32) is coaxially fixed to the outside of the support shaft (31), and the end of the support shaft (31) is fixedly mounted with a knob (311) located outside the lifting box (10).

6. The pipe pile lifting equipment according to claim 1, characterized in that: A vertical groove (13) communicating with the circular cavity (11) is provided on the side wall of the lifting box (10), and hinge seats (14) are provided on both sides of the vertical groove (13). The lifting rod (20) is rotatably assembled in the hinge seats (14) and is tilted.

7. The pipe pile lifting equipment according to claim 6, characterized in that: A transmission groove (52) is provided on one side of the rotating disk (32) close to the suspension rod (20), and an arc-shaped portion (53) is provided in the transmission groove (52). The bottom end of the suspension rod (20) extends into the interior of the circular cavity (11) and is fixedly mounted with a convex shaft (51) located in the transmission groove (52), and the convex shaft (51) is located below the arc-shaped portion (53) and is in close contact with the arc-shaped portion (53).

8. The pipe pile lifting equipment according to claim 1, characterized in that: A slide seat (621) is fixedly mounted on the end of the brake rod (62); a vertical slide groove (15) is provided on a side of the lifting box (10) close to the ratchet gear (61); the slide seat (621) is slidably mounted inside the slide groove (15); and a pull ring (622) located outside the lifting box (10) is fixedly mounted on the slide seat (621).

9. The pipe pile lifting equipment according to claim 8, characterized in that: One side of the teeth of the ratchet gear (61) is an arcuate surface, and the other side of the teeth of the ratchet gear (61) is a vertical surface, which is arranged along the radial direction of the ratchet gear (61).

10. The pipe pile lifting equipment according to claim 9, characterized in that: The brake rod (62) is a semi-cylinder, one side of which is a semicircular surface, contacting the arc surface of the adjacent gear tooth, and the other side of which is a horizontal surface, contacting the vertical surface of the adjacent gear tooth on the other side.

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