Connecting and fixing device for lifting H-shaped steel pile

Abstract

The utility model discloses a connecting and fixing device for lifting an H-shaped steel pile, which comprises two chucks, the number of the chucks is two, the two chucks are of a U-shaped structure, and the U-shaped opening ends of the two chucks are oppositely arranged; a plurality of hydraulic cylinders are arranged on the two sides of the two clamping heads from top to bottom, and the two ends of the hydraulic cylinders are connected with the two clamping heads correspondingly; a lifting rope is arranged over the two clamping heads, and the two ends of the lifting rope are connected with the two clamping heads respectively. The two clamping heads are driven by the hydraulic cylinder to adjust the distance, the two clamping heads are clamped to the two sides of the H-shaped steel pile, then the hydraulic cylinder is used for driving the clamping heads to be clamped to the H-shaped steel pile, in this way, the steel pile can be stably clamped by the clamping heads, the lifting rope is connected to the tops of the two clamping heads, and a hook of a crane is hung on the lifting rope; and then the steel pile can be rapidly pulled out from the ground through a crane, and therefore the purpose of pile pulling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile extraction tools, in particular to a connection and fixation device for lifting H-shaped steel piles. Background Technique

[0002] In some engineering constructions, a large number of H-shaped steel piles are driven into the ground. After the engineering construction is completed, the redundant H-shaped steel piles need to be pulled out. The method used for pile extraction is to use a pile extractor or a crane for pile extraction. The pile extractor is equipped with a connection and fixation mechanism for convenient pile extraction. However, the crane does not have a connection and fixation device for pile extraction and needs to be additionally equipped with a connection and fixation device to connect with the steel pile.

[0003] Chinese Patent No. CN201921727486.3 discloses a fixing member for pile extraction in highway engineering, including a fixing ring. An inverted V-shaped frame is fixedly arranged on the upper side of the fixing ring. The top of the inverted V-shaped frame is fixedly sleeved with a connecting rod through a through hole. A lifting rope is fixedly arranged at the upper end of the connecting rod, a connecting rope is fixedly arranged at the lower end of the connecting rod, a hook is fixedly arranged at the lower end of the connecting rope, and two fixing mechanisms are symmetrically arranged inside the fixing ring. This solution increases the fixing effect on building piles, thereby increasing the stability of the hook and improving the pile extraction efficiency.

[0004] The above-mentioned fixing member for pile extraction provided by the patent is a connection and fixation device for pile extraction. However, this connection and fixation device is not convenient for clamping and fixing H-shaped steel piles and is not convenient for cooperating with a crane to quickly and effectively perform pile extraction operations on H-shaped steel piles. Content of the Utility Model

[0005] The purpose of the utility model is to provide a connection and fixation device for lifting H-shaped steel piles, aiming to improve the problem that the existing connection and fixation device is not convenient for clamping and fixing H-shaped steel piles and is not convenient for cooperating with a crane to quickly and effectively perform pile extraction operations on H-shaped steel piles.

[0006] The utility model is implemented as follows:

[0007] A connection and fixation device for lifting H-shaped steel piles includes a chuck. There are two chucks, and the two chucks are in a concave shape. The concave open ends of the two chucks are arranged opposite to each other; a plurality of hydraulic cylinders are arranged on both sides of the two chucks from top to bottom, and both ends of the hydraulic cylinders are connected to the two chucks respectively; a lifting rope is arranged directly above the two chucks, and both ends of the lifting rope are connected to the two chucks respectively.

[0008] Preferably, a rubber layer is arranged on the inner side surface of the chuck, and a plurality of connecting heads are arranged on both side surfaces of the chuck from top to bottom. A connecting hole is arranged in the middle of the connecting head, an ear plate is arranged on the top of the chuck, and a lifting hole is arranged in the middle of the ear plate.

[0009] Preferably, a telescopic rod is provided at the output end of the hydraulic cylinder. A limit plate is provided at the front end of the telescopic rod. Studs are provided on both the rear end of the hydraulic cylinder and the front end face of the limit plate, and compression nuts are provided on the studs.

[0010] Preferably, connecting buckles are provided at both ends of the lifting rope, and the connecting buckles are connected to the lifting holes.

[0011] Preferably, a lifting joint is further included. The lifting rope passes through the middle of the lifting joint. A pulley is rotatably connected to the inner side of the lifting joint. A groove is provided on the side surface of the pulley, and a lifting ring is provided at the top of the lifting joint.

[0012] Preferably, a pressing assembly is further included. A threaded hole is provided on the side surface of the chuck, and the threaded hole is threadedly connected to the pressing assembly. The pressing assembly includes a pressing plate and a driving screw rod. The pressing plate is rotatably connected to the driving screw rod.

[0013] Preferably, a swivel joint is provided on the surface of the pressing plate facing the driving screw rod. A bearing is provided in the middle of the swivel joint. A transfer shaft is provided at one end of the driving screw rod facing the pressing plate. The transfer shaft is in interference connection with the bearing, and a rotating handle is provided at the other end of the driving screw rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The two chucks of the present utility model are driven by a hydraulic cylinder to adjust the distance. The two chucks are clamped on both sides of the H-shaped steel pile, and then the hydraulic cylinder is used to drive the chucks to be clamped on the H-shaped steel pile, so that the chucks can stably clamp the steel pile. The two chucks are connected with a lifting rope at the top. The hook of the crane is hung on the lifting rope, and then the steel pile can be quickly pulled out from the ground by the crane, so as to achieve the purpose of pile pulling.

[0016] 2. A lifting joint is installed on the lifting rope of the present utility model, and the lifting joint can ensure that the hook of the crane can always be in the center state for pile pulling operation on the steel pile.

[0017] 3. A pressing assembly is provided on the side surface of the chuck of the present utility model, so that the chuck can stably fit the H-shaped steel pile and avoid the left and right shaking of the chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the chuck of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the hydraulic cylinder of the present utility model;

[0021] Figure 4It is a schematic structural diagram of the lifting rope of the present utility model;

[0022] Figure 5 It is a schematic structural diagram of the lifting joint of the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the pressing assembly of the present utility model.

[0024] In the figure: 1. Chuck; 11. Rubber layer; 12. Connector; 13. Connecting hole; 14. Threaded hole; 15. Ear plate; 16. Hoisting hole; 2. Hydraulic cylinder; 21. Telescopic rod; 22. Limiting plate; 23. Stud; 24. Compression cap; 3. Lifting rope; 31. Connecting buckle; 4. Lifting joint; 41. Pulley; 42. Suspension ring; 43. Groove; 5. Pressing assembly; 51. Pressing plate; 511. Adapter; 512. Bearing; 52. Driving screw; 521. Adapter shaft; 522. Rotating handle. Specific embodiments

[0025] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The following will be further described in conjunction with the drawings and specific embodiments:

[0027] Embodiment 1

[0028] As Figure 1 shown, a connection and fixing device for lifting H-shaped steel piles includes two chucks 1. The two chucks 1 are in a concave shape, and the open ends of the concave shapes of the two chucks 1 are arranged opposite to each other; this structure facilitates the chuck 1 to be clamped on the H-shaped steel pile, facilitating the clamping and fixing of the H-shaped steel pile. A plurality of hydraulic cylinders 2 are provided on both sides of the two chucks 1 from top to bottom. The two ends of the hydraulic cylinder 2 are respectively connected to the two chucks 1; the two chucks 1 are driven by the hydraulic cylinder 2 to be clamped on the H-shaped steel pile, thereby facilitating the clamping of the steel pile and further facilitating the crane to pull out the H-shaped steel pile. A lifting rope 3 is provided directly above the two chucks 1. The two ends of the lifting rope 3 are respectively connected to the two chucks 1. The lifting rope 3 facilitates the connection between the hook of the crane and the lifting rope 3.

[0029] As Figure 2As shown in the figure, a rubber layer 11 is provided on the inner side of the chuck 1. The rubber layer 11 is convenient for pressing tightly on the H-shaped steel pile, thereby facilitating an increase in the frictional force between the chuck 1 and the steel pile. Moreover, a plurality of connectors 12 are provided on both sides of the chuck 1 from top to bottom. A connection hole 13 is provided in the middle of the connector 12. The cooperation of the connector 12 and the connection hole 13 is convenient for connecting the chuck 1 with the hydraulic cylinder 2, facilitating the connection and fixation of the hydraulic cylinder 2 and the chuck 1. An ear plate 15 is provided at the top of the chuck 1, and a lifting hole 16 is provided in the middle of the ear plate 15. The ear plate 15 and the lifting hole 16 are convenient for cooperating with the lifting rope 3, facilitating the use of the lifting rope 3.

[0030] As Figure 3 shown in the figure, a telescopic rod 21 is provided at the output end of the hydraulic cylinder 2, and a limiting plate 22 is provided at the front end of the telescopic rod 21. The telescopic rod 21 is used for the hydraulic cylinder 2 to drive the chuck 1 to tighten, and the limiting plate 22 is convenient for pressing tightly on the connector 12. Studs 23 are provided on the rear end of the hydraulic cylinder 2 and the front end face of the limiting plate 22, and nuts 24 are provided on the studs 23. The cooperation of the studs 23 and the nuts 24 is convenient for the front and rear ends of the hydraulic cylinder 2 to pass through the connection hole 13 and be connected to the connecting plate as Figure 4 shown in the figure, connection buckles 31 are provided at both ends of the lifting rope 3, and the connection buckles 31 are connected to the lifting holes 16; this structure is convenient for the lifting rope 3 to be smoothly connected to the chuck 1.

[0031] Working principle: During use, according to the usage requirements, two chucks 1 are sleeved on the H-shaped steel pile, and then the hydraulic cylinder 2 is driven, so that the hydraulic cylinder 2 drives the two chucks 1 to press tightly on the side of the H-shaped steel pile. Then, the hook of the crane is connected to the lifting rope 3, and then the crane operates, and the steel pile is pulled out from the ground by the upward pulling force of the crane, so as to achieve the purpose of pile pulling. Compared with the prior art, in this application, the distance between the two chucks 1 is adjusted by driving the hydraulic cylinder 2. The two chucks 1 are clamped on both sides of the H-shaped steel pile, and then the hydraulic cylinder 2 is used to drive the chuck 1 to be clamped on the H-shaped steel pile, so that the chuck 1 can stably clamp the steel pile. And the two chucks 1 are connected with a lifting rope 3 at the top. The hook of the crane is hung on the lifting rope 3, and then the steel pile can be quickly pulled out from the ground by using the crane, so as to achieve the purpose of pile pulling.

[0032] Embodiment 2

[0033] As Figure 1As shown in the figure, a connecting and fixing device for lifting H-shaped steel piles includes two chucks 1. The two chucks 1 are of a concave shape, and the open ends of the two chucks 1 are arranged opposite to each other. This structure facilitates the chucks 1 to be clamped on the H-shaped steel pile, facilitating the clamping and fixing of the H-shaped steel pile. On both sides of the two chucks 1, a plurality of hydraulic cylinders 2 are provided from top to bottom. The two ends of the hydraulic cylinder 2 are respectively connected to the two chucks 1. The hydraulic cylinder 2 drives the two chucks 1 to be clamped on the H-shaped steel pile, thus facilitating the clamping of the steel pile and further facilitating the crane to pull out the H-shaped steel pile. Above the two chucks 1, a lifting rope 3 is provided. The two ends of the lifting rope 3 are respectively connected to the two chucks 1. The lifting rope 3 facilitates the connection between the hook of the crane and the lifting rope 3.

[0034] As Figure 2 shown, a rubber layer 11 is provided on the inner side of the chuck 1. The rubber layer 11 facilitates pressing on the H-shaped steel pile, thus facilitating an increase in the friction between the chuck 1 and the steel pile. On both sides of the chuck 1, a plurality of connecting heads 12 are provided from top to bottom. A connecting hole 13 is provided in the middle of the connecting head 12. The cooperation of the connecting head 12 and the connecting hole 13 facilitates the connection between the chuck 1 and the hydraulic cylinder 2, and facilitates the connection and fixation of the hydraulic cylinder 2 and the chuck 1. An ear plate 15 is provided at the top of the chuck 1. A lifting hole 16 is provided in the middle of the ear plate 15. The ear plate 15 and the lifting hole 16 facilitate the cooperation with the lifting rope 3 and facilitate the use of the lifting rope 3.

[0035] As Figure 3 shown, a telescopic rod 21 is provided at the output end of the hydraulic cylinder 2. A limiting plate 22 is provided at the front end of the telescopic rod 21. The telescopic rod 21 is used for the hydraulic cylinder 2 to drive the chuck 1 to tighten, and the limiting plate 22 facilitates pressing on the connecting head 12. Studs 23 are provided on the rear end of the hydraulic cylinder 2 and the front end face of the limiting plate 22. Nuts 24 are provided on the studs 23. The cooperation of the studs 23 and the nuts 24 facilitates the front and rear ends of the hydraulic cylinder 2 to pass through the connecting hole 13 and be connected to the connecting plate As Figure 4 shown, connecting buckles 31 are provided at both ends of the lifting rope 3. The connecting buckles 31 are connected to the lifting holes 16. This structure facilitates the smooth connection between the lifting rope 3 and the chuck 1.

[0036] As Figure 1 and Figure 5 shown, it further includes a lifting joint 4. The lifting rope 3 passes through the middle of the lifting joint 4. The lifting joint 4 is used for connecting with the lifting rope 3, enabling the lifting joint 4 to cooperate with the crane to lift the entire pile-pulling device centrally. A pulley 41 is rotatably connected to the inner side of the lifting joint 4. A groove 43 is provided on the side of the pulley 41. The cooperation of the pulley 41 and the groove 43 facilitates the smooth connection between the pulley 41 and the lifting rope 3. And a lifting ring 42 is provided at the top of the lifting joint 4. The lifting ring 42 facilitates the cooperation with the hook of the crane.

[0037] Embodiment 3

[0038] As Figure 1As shown in the figure, a connecting and fixing device for lifting H-shaped steel piles includes two chucks 1. The two chucks 1 are in a concave shape, and the open ends of the concave shapes of the two chucks 1 are arranged opposite to each other. This structure facilitates the clamping of the chucks 1 onto the H-shaped steel piles, making it convenient to hold and fix the H-shaped steel piles. On both sides of the two chucks 1, a plurality of hydraulic cylinders 2 are provided from top to bottom. The two ends of the hydraulic cylinders 2 are respectively connected to the two chucks 1. By driving the two chucks 1 to clamp onto the H-shaped steel piles through the hydraulic cylinders 2, it is convenient to hold the steel piles, and thus it is convenient for the crane to pull out the H-shaped steel piles. Above the two chucks 1, there is a lifting rope 3. The two ends of the lifting rope 3 are respectively connected to the two chucks 1, and the lifting rope 3 facilitates the connection between the hook of the crane and the lifting rope 3.

[0039] As Figure 2 shown in the figure, a rubber layer 11 is provided on the inner side of the chuck 1. The rubber layer 11 is convenient for pressing tightly on the H-shaped steel pile, thereby increasing the friction between the chuck 1 and the steel pile. On both sides of the chuck 1, a plurality of connecting heads 12 are provided from top to bottom. A connecting hole 13 is provided in the middle of the connecting head 12. The cooperation of the connecting head 12 and the connecting hole 13 facilitates the connection between the chuck 1 and the hydraulic cylinder 2, and is convenient for the hydraulic cylinder 2 to cooperate with the chuck 1 for connection and fixation. An ear plate 15 is provided at the top of the chuck 1, and a lifting hole 16 is provided in the middle of the ear plate 15. The ear plate 15 and the lifting hole 16 are convenient for cooperating with the lifting rope 3 and facilitating the use of the lifting rope 3.

[0040] As Figure 3 shown in the figure, a telescopic rod 21 is provided at the output end of the hydraulic cylinder 2, and a limit plate 22 is provided at the front end of the telescopic rod 21. The telescopic rod 21 is used for the hydraulic cylinder 2 to drive the chuck 1 to tighten, and the limit plate 22 is convenient for pressing tightly on the connecting head 12. Studs 23 are provided on both the rear end of the hydraulic cylinder 2 and the front end face of the limit plate 22, and nuts 24 are provided on the studs 23. The cooperation of the studs 23 and the nuts 24 facilitates the front and rear ends of the hydraulic cylinder 2 to pass through the connecting hole 13 and be connected to the connecting plate.

[0041] As Figure 4 shown in the figure, connecting buckles 31 are provided at both ends of the lifting rope 3, and the connecting buckles 31 are connected to the lifting holes 16. This structure facilitates the smooth connection between the lifting rope 3 and the chuck 1.

[0042] As Figure 1 and Figure 5 shown in the figure, it further includes a lifting joint 4. The lifting rope 3 passes through the middle of the lifting joint 4. The lifting joint 4 is used for connecting with the lifting rope 3, enabling the lifting joint 4 to cooperate with the crane to lift the entire pile pulling device in the center. A pulley 41 is rotatably connected to the inner side of the lifting joint 4, and a groove 43 is provided on the side of the pulley 41. The cooperation of the pulley 41 and the groove 43 facilitates the smooth connection between the pulley 41 and the lifting rope 3. And a lifting ring 42 is provided at the top of the lifting joint 4, and the lifting ring 42 is convenient for cooperating with the hook of the crane.

[0043] As Figure 1 and Figure 6As shown in the figure, it further includes a pressing assembly 5. A threaded hole 14 is provided on the side of the chuck 1, and the threaded hole 14 is threadedly connected to the pressing assembly 5. The pressing assembly 5 includes a pressing plate 51 and a driving screw 52, and the pressing plate 51 is rotatably connected to the driving screw 52. The cooperation of the driving screw 52 and the pressing plate 51 is convenient for pressing on the H-shaped steel pile, so as to achieve a stable cooperation between the chuck 1 and the H-shaped steel pile and prevent the chuck 1 from shaking left and right on the H-shaped steel pile. A rotary joint 511 is provided on one side of the pressing plate 51 facing the driving screw 52, and a bearing 512 is provided in the middle of the rotary joint 511. One end of the driving screw 52 facing the pressing plate 51 is provided with a transfer shaft 521, and the transfer shaft 521 is in interference connection with the bearing 512. The rotary joint 511 and the bearing 512 facilitate the rotational connection between the driving screw 52 and the pressing plate 51, and facilitate the driving screw 52 to drive the pressing plate 51 to abut against the H-shaped steel pile. The other end of the driving screw 52 is provided with a rotating handle 522, and the rotating handle 522 is convenient for rotating the driving screw 52 and facilitating the rotation and use of the driving screw 52.

[0044] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connection and fixing device for lifting an H-shaped steel pile, comprising a clamp (1), characterized in that: Two clamping heads (1) are provided, and the two clamping heads (1) are in a concave-shaped structure, and the concave-shaped opening ends of the two clamping heads (1) are arranged opposite to each other; a plurality of hydraulic cylinders (2) are provided on both sides of the two clamping heads (1) from top to bottom, and the two ends of the hydraulic cylinders (2) are respectively connected to the two clamping heads (1); a lifting rope (3) is provided directly above the two clamping heads (1), and the two ends of the lifting rope (3) are respectively connected to the two clamping heads (1).

2. A connection and fixing device for lifting H-shaped steel piles according to claim 1, characterized in that: The inner side of the clamp (1) is provided with a rubber layer (11), and the two side surfaces of the clamp (1) are provided with a plurality of connecting heads (12) from top to bottom, a connecting hole (13) is provided in the middle of the connecting head (12), and a lug plate (15) is provided on the top of the clamp (1), and a hanging hole (16) is provided in the middle of the lug plate (15).

3. A connection and fixing device for lifting H-shaped steel piles according to claim 1, characterized in that: The output end of the hydraulic cylinder (2) is provided with a telescopic rod (21), the front end of the telescopic rod (21) is provided with a limit plate (22), the rear end of the hydraulic cylinder (2) and the front end of the limit plate (22) are both provided with studs (23), and the studs (23) are provided with a pressure cap (24).

4. A connection and fixing device for lifting H-shaped steel piles according to claim 2, characterized in that: Both ends of the suspension rope (3) are provided with connecting buckles (31), and the connecting buckles (31) are connected to the suspension holes (16).

5. A connection and fixing device for lifting H-shaped steel piles according to any one of claims 1 to 4, characterized in that: It also comprises a lifting joint (4), the lifting rope (3) passes through the middle of the lifting joint (4), a pulley (41) is rotatably connected to the inner side of the lifting joint (4), a groove (43) is provided on the side of the pulley (41), and a lifting ring (42) is provided on the top of the lifting joint (4).

6. A connection and fixing device for lifting H-shaped steel piles according to any one of claims 1 to 4, characterized in that: It also includes a clamping assembly (5), a threaded hole (14) is provided on the side of the clamping head (1), the threaded hole (14) is threadedly connected to the clamping assembly (5), and the clamping assembly (5) includes a pressing plate (51) and a driving screw (52), and the pressing plate (51) is rotatably connected to the driving screw (52).

7. A connection and fixing device for lifting H-shaped steel piles according to claim 6, characterized in that: A conversion joint (511) is provided on one side of the pressure plate (51) facing the driving screw rod (52), a bearing (512) is provided in the middle of the conversion joint (511), a conversion shaft (521) is provided on one end of the driving screw rod (52) facing the pressure plate (51), the conversion shaft (521) is interference-connected with the bearing (512), and a rotating handle (522) is provided on the other end of the driving screw rod (52).

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