Hoisting fixture for variable-diameter PCCP (prestressed concrete cylinder pipe) bell and spigot

Abstract

The utility model relates to the technical field of hoisting clamps, in particular to a variable-diameter PCCP bell and spigot hoisting clamp which comprises a hoisting ring, a hoisting column and a hoisting rotating wheel, the tail end of the lower side of the hoisting ring is fixedly connected with the hoisting column, the tail end of the lower side of the hoisting column is fixedly connected with the hoisting rotating wheel, and the outer side of the hoisting rotating wheel is slidably connected with a hoisting disc. A telescopic joint assembly is fixedly connected to the lower side of the hoisting disc and comprises a fixed pipe, a fixed pin hole is formed in the inner side of the fixed pipe, a fixed rod is fixedly connected to the inner side of the fixed pipe, a fixed block is fixedly connected to the end, away from the center of the hoisting disc, of the fixed rod, a movable pipe is slidably connected to the outer side of the fixed block, and a clamping pin hole is formed in the inner side of the movable pipe; according to the PCCP hoisting device, due to the innovative design of the PCCP hoisting device, the working efficiency is improved, the safety risk in the operation process is reduced, and the PCCP hoisting device is suitable for hoisting operation of PCCPs of various specifications.

Description

Technical Field

[0001] This utility model relates to the field of lifting clamp technology, specifically a variable diameter PCCP socket lifting clamp. Background Technology

[0002] The spigot and socket lifting clamp is a device specifically designed for lifting spigot and socket pipes. It is mainly used in municipal engineering construction, especially for the lifting of spigot and socket flexible joint steel socket drainage pipes. It is a simple, easy-to-operate, safe and reliable lifting tool that can improve the speed and quality of spigot and socket pipe lifting, while protecting the flexible joint of the pipe and ensuring construction safety.

[0003] The variable diameter PCCP socket lifting clamp is a lifting tool specifically designed for PCCP pipes. It uses a specific structural design to ensure stability and safety during the lifting process, while improving construction efficiency and protecting the quality of the pipes.

[0004] Prestressed concrete cylinder pipe (PCCP) is used in water conservancy projects. The pipe diameter ranges from DN600 to DN4000 and the length ranges from 5000 to 6000 mm. This pipe is connected by a special socket joint. During the factory production process, the lifting tools for PCCP socket joints are heavy and relatively simple, and can only be used for one specification of PCCP socket joint. When various specifications of socket joints need to be produced and lifted at the same time, the frequent change of lifting tools will greatly affect the lifting efficiency and work efficiency. Moreover, the use of improper lifting clamps can easily lead to the clamps disengaging and causing safety accidents. Therefore, a variable diameter PCCP socket joint lifting clamp is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a variable diameter PCCP socket lifting fixture to solve the problem that frequent changing of lifting fixtures greatly affects lifting efficiency and work efficiency when various specifications of sockets need to be produced and lifted in succession, and that improper use of lifting fixtures can easily lead to fixture detachment and safety accidents during the lifting process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A variable-diameter PCCP socket and spigot hoisting fixture, comprising a hoisting ring, a hoisting column and a hoisting runner. The lower end of the hoisting ring is fixedly connected with the hoisting column, the lower end of the hoisting column is fixedly connected with the hoisting runner, the outside of the hoisting runner is slidably connected with a hoisting disc, the lower side of the hoisting disc is fixedly connected with a telescopic joint assembly. The telescopic joint assembly includes a fixed pipe, a fixed pin hole is opened inside the fixed pipe, a fixed rod is fixedly connected inside the fixed pipe, a fixed block is fixedly connected to one end of the fixed rod away from the center of the hoisting disc, the outside of the fixed block is slidably connected with a moving pipe, a clamping pin hole is opened inside the moving pipe, a clamping pin is arranged inside the clamping pin hole, the upper end of the moving pipe is rotatably connected with a diagonal strut, one end of the diagonal strut close to the center of the hoisting disc is rotatably connected with a control ring, a steel cable is fixedly connected to one end of the moving pipe away from the center of the hoisting disc, and a clamping mechanism is fixedly connected to the lower end of the steel cable.

[0008] As a further optimized content of the present utility model, wherein: threads are provided on the outside of the hoisting column, a thread groove is opened inside the control ring, the hoisting column is helically connected with the control ring, and the maximum diameter of the hoisting column is half of the maximum diameter of the hoisting runner.

[0009] As a further optimized content of the present utility model, wherein: the side section of the hoisting runner is in an "I" shape, the lower side of the hoisting runner is on the same horizontal plane as the lower side of the hoisting disc, the upper half and the lower half of the hoisting runner are of the same size, and the maximum diameter of the hoisting runner is one-third of the maximum diameter of the hoisting disc.

[0010] As a further optimized content of the present utility model, wherein: there are three fixed pipes in total, the fixed pipes are uniformly distributed on the same side of the hoisting disc with the axis of the hoisting disc as the center, one end of the fixed pipe close to the center of the hoisting disc is a sealing structure, and only one fixed pin hole is penetrated and opened inside the fixed pipe.

[0011] As a further optimized content of the present utility model, wherein: the moving pipe slides inside the fixed pipe, the side sections of the moving pipe and the fixed pipe are both in an "Hui" shape, the moving pipe slides outside the fixed rod, and the size of the square hole opened inside the moving pipe is the same as the size of the fixed block.

[0012] As a further optimized content of the present utility model, wherein: there are several clamping pin holes in total, the clamping pin holes penetrate in the horizontal direction of the moving pipe, the diameter of the clamping pin holes is the same as the diameter of the fixed pin holes, and the clamping pin holes are uniformly distributed on the same horizontal plane inside the moving pipe.

[0013] As a further optimization of this utility model, the diagonal brace and the movable tube rotatably connected to the diagonal brace are on the same vertical plane, the top view projection of the diagonal brace is always above the fixed tube and the movable tube, and the diagonal brace is fixedly connected to the control ring through a support steering knuckle.

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

[0015] This invention, through its lifting column, fixed pipe, moving pipe, locking pin, diagonal brace, and control ring, significantly improves the lifting efficiency and safety of PCCP pipes of different diameters through its precise structure and flexible adjustment mechanism. Its core advantage lies in its ability to adjust the length of the moving pipe according to the diameter of the PCCP socket, achieving rapid adaptation. The spiral connection and threaded groove design ensure tight fixation and precise control between the lifting column and the control ring, enhancing operational flexibility. The "I"-shaped lifting wheel and evenly distributed fixed pipes provide structural stability and balance. The "U"-shaped design of the moving and fixed pipes, along with the precise fit of the locking pin holes, ensures structural stability and smooth sliding. The fixed connection between the diagonal brace and the control ring provides additional support and stability throughout the lifting process. Overall, this innovative design not only improves work efficiency but also reduces safety risks during operation, making it suitable for lifting PCCP pipes of various specifications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of the control ring of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the fixed tube of this utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of the movable tube of this utility model;

[0020] Figure 5 This is a schematic diagram of the fixed pipe installation structure of this utility model.

[0021] In the diagram: 1. Lifting ring; 2. Lifting column; 3. Lifting wheel; 4. Lifting disc;

[0022] 5. Expansion joint assembly; 51. Fixing pipe; 52. Fixing pin hole; 53. Fixing rod; 54. Fixing block; 55. Moving pipe; 56. Engaging pin hole; 57. Locking pin; 58. Diagonal brace; 59. Control ring;

[0023] 6. Steel cable; 7. Clamping mechanism. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] A variable-diameter PCCP socket lifting clamp includes a lifting ring 1, a lifting column 2, and a lifting wheel 3. The lifting column 2 is fixedly connected to the lower end of the lifting ring 1, and the lifting wheel 3 is fixedly connected to the lower end of the lifting column 2. A lifting disc 4 is slidably connected to the outer side of the lifting wheel 3. An expansion joint assembly 5 is fixedly connected to the lower side of the lifting disc 4. The expansion joint assembly 5 includes a fixing pipe 51, a fixing pin hole 52 is opened on the inner side of the fixing pipe 51, and a fixing rod 53 is fixedly connected to the inner side of the fixing pipe 51. A fixed block 54 is fixedly connected to one end of the lifting disc 4 away from the center. A moving tube 55 is slidably connected to the outside of the fixed block 54. A locking pin hole 56 is opened on the inside of the moving tube 55. A locking pin 57 is placed inside the locking pin hole 56. A diagonal brace 58 is rotatably connected to the upper end of the moving tube 55. A control ring 59 is rotatably connected to the outside of the diagonal brace 58 near the center of the lifting disc 4. A steel cable 6 is fixedly connected to the end of the moving tube 55 away from the center of the lifting disc 4. A clamping mechanism 7 is fixedly connected to the lower end of the steel cable 6.

[0028] As a further implementation of this scheme, the outer side of the lifting column 2 is provided with threads, and the inner side of the control ring 59 is provided with threaded grooves. The lifting column 2 and the control ring 59 are spirally connected. The maximum diameter of the lifting column 2 is half the maximum diameter of the lifting wheel 3. Through the spiral connection, the lifting column 2 and the control ring 59 can be tightly fixed and rotated relative to each other, which enhances the stability and flexibility of the structure.

[0029] As a further implementation of this scheme, the side section of the lifting wheel 3 is "I" shaped. The lower side of the lifting wheel 3 is on the same horizontal plane as the lower side of the lifting disc 4. The upper half of the lifting wheel 3 is the same size as the lower half. The maximum diameter of the lifting wheel 3 is one-third of the maximum diameter of the lifting disc 4. This design can increase the strength and stability of the lifting wheel 3 while maintaining the lightweight structure, which is conducive to the lifting operation.

[0030] As a further implementation of this scheme, there are three fixed tubes 51. The fixed tubes 51 are evenly distributed on the same side of the hoisting disk 4 with the axis of the hoisting disk 4 as the center. The end of the fixed tube 51 near the center of the hoisting disk 4 is a sealed structure. Only one fixed pin hole 52 is opened through the inside of the fixed tube 51. The even distribution and sealing structure design of the fixed tubes 51 can ensure the balance and stability of the hoisting disk 4. The design of the fixed pin hole 52 facilitates the fixation and restriction of the moving tube 55.

[0031] As a further implementation of this solution, the movable tube 55 slides inside the fixed tube 51. The side sections of both the movable tube 55 and the fixed tube 51 are "U" shaped. The movable tube 55 slides outside the fixed rod 53. The square hole opened inside the movable tube 55 is the same size as the fixed block 54. The design of the movable tube 55 sliding inside the fixed tube 51 allows for flexible adjustment of its position, while the "U" shaped side section provides sufficient strength and stability. At the same time, the matching of the square hole and the fixed block 54 ensures the stable sliding of the movable tube 55.

[0032] As a further implementation of this solution, there are a total of several locking pin holes 56. The locking pin holes 56 penetrate the horizontal direction of the moving tube 55. The diameter of the locking pin holes 56 is the same as the diameter of the fixed pin holes 52. The locking pin holes 56 are evenly distributed on the same horizontal plane inside the moving tube 55. The even distribution of the locking pin holes 56 and the design of having the same diameter as the fixed pin holes 52 ensure the precise fit and stable connection between the moving tube 55 and the fixed tube 51.

[0033] As a further implementation of this scheme, the diagonal brace 58 and the movable tube 55 rotatably connected to the diagonal brace 58 are on the same vertical plane. The top view projection of the diagonal brace 58 is always above the fixed tube 51 and the movable tube 55. The diagonal brace 58 is fixedly connected to the control ring 59 through the support steering knuckle. The vertical plane layout and connection of the diagonal brace 58 and the movable tube 55 provide additional support and stability, enhancing the anti-tilting and anti-torsion capabilities of the entire structure.

[0034] Workflow: When using this socket lifting fixture to lift PCCPs of different diameters, the length of the moving tube 55 extending from the inside of the fixed tube 51 can be adjusted according to the socket diameter of the PCCP to be lifted. First, insert the large locking pin 57 into both the fixing pin hole 52 on the inside of the fixed tube 51 and the locking pin hole 56 on the inside of the moving tube 55, and then pull it out. This ensures that the moving tube 55 can slide smoothly inside the fixed tube 51. Then, an axial rotational force can be applied to the lifting ring 1, causing the lifting ring 1 to drive the lifting column 2 fixedly connected to its lower side and the lifting wheel 3 fixedly connected to the lifting column 2 synchronously. The lifting wheel 3 rotates smoothly inside the stationary lifting disc 4, causing the lifting column 2 to rotate relative to the stationary control ring 59. Simultaneously, due to the helical connection between the lifting column 2 and the control ring 59, the lifting column 2 allows the control ring 59 to move vertically downwards on its outer side. This movement of the control ring 59 is controlled by a support steering knuckle fixedly connected to its outer side, which rotates the diagonal brace 58. Since the other end of the diagonal brace 58 is rotatably connected to the support steering knuckle on the moving tube 55, as the diagonal brace 58 rotates and moves downwards on the control ring 59 at its end near the lifting column 2, the diagonal brace 58 moves closer to... One end of the movable tube 55 is supported by a steering knuckle on the movable tube 55, which rotates and pushes the movable tube 55 to slide inside the fixed tube 51. At this time, the fixed rod 53 and the fixed block 54 fixedly connected to the inside of the fixed tube 51 slide relative to each other with the relative movement of the movable tube 55. The fixed rod 53 and the fixed block 54, while ensuring the structural stability of the movable tube 55 and the fixed tube 51, can also provide a certain degree of restriction and support for the movable tube 55. The movable tube 55 is moved to an appropriate position, and another locking pin hole 56 through the inside of the movable tube 55 is aligned with the locking pin hole through the fixed tube 51. After fixing the pin hole 52, the axial rotation force on the lifting ring 1 can be stopped. Then, the locking pin 57 is simultaneously inserted into the fixing pin hole 52 and the locking pin hole 56, which can stabilize and restrict the connection between the fixed pipe 51 and the moving pipe 55, and at the same time ensure the stability of the expansion joint assembly 5 structure. Finally, the clamping mechanism 7 connected to the steel cable 6 clamps and fixes the PCCP socket, and the PCCP can be lifted. This device greatly improves the lifting efficiency and work efficiency of PCCPs of different diameters, and avoids the probability of safety accidents caused by the clamp coming off during the lifting process due to the use of improperly sized lifting clamps.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable diameter PCCP socket lifting clamp, comprising a lifting ring (1), a lifting column (2), and a lifting wheel (3), characterized in that: A hoisting column (2) is fixedly connected to the lower end of the hoisting ring (1). A hoisting wheel (3) is fixedly connected to the lower end of the hoisting column (2). A hoisting disc (4) is slidably connected to the outside of the hoisting wheel (3). A telescopic joint assembly (5) is fixedly connected to the lower side of the hoisting disc (4). The telescopic joint assembly (5) includes a fixed pipe (51). A fixed pin hole (52) is formed inside the fixed pipe (51). A fixed rod (53) is fixedly connected to the inside of the fixed pipe (51). A fixed block (54) is fixedly connected to the end of the fixed rod (53) away from the center of the hoisting disc (4). A movable pipe (55) is slidably connected to the outside of the fixed block (54). A clamping pin hole (56) is formed inside the movable pipe (55). A clamping pin (57) is arranged inside the clamping pin hole (56). An inclined strut (58) is rotatably connected to the upper end of the movable pipe (55). A control ring (59) is rotatably connected to the end of the inclined strut (58) close to the center of the hoisting disc (4). A steel cable (6) is fixedly connected to the end of the movable pipe (55) away from the center of the hoisting disc (4). A clamping mechanism (7) is fixedly connected to the lower end of the steel cable (6).

2. The variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: Threads are provided on the outside of the hoisting column (2). A thread groove is formed inside the control ring (59). The hoisting column (2) is helically connected to the control ring (59). The maximum diameter of the hoisting column (2) is half of the maximum diameter of the hoisting wheel (3).

3. A variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: The side cross-section of the hoisting wheel (3) is in the shape of "I". The lower side of the hoisting wheel (3) is on the same horizontal plane as the lower side of the hoisting disc (4). The upper half and the lower part of the hoisting wheel (3) are of the same size. The maximum diameter of the hoisting wheel (3) is one-third of the maximum diameter of the hoisting disc (4).

4. A variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: There are three fixed pipes (51) in total. The fixed pipes (51) are evenly distributed on the same side of the hoisting disc (4) with the axis of the hoisting disc (4) as the center. The ends of the fixed pipes (51) close to the center of the hoisting disc (4) are all in a sealed structure. Only one fixed pin hole (52) is formed through the inside of the fixed pipe (51).

5. A variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: The movable pipe (55) slides inside the fixed pipe (51). The side cross-sections of the movable pipe (55) and the fixed pipe (51) are both in the shape of "回". The movable pipe (55) slides on the outside of the fixed rod (53). The size of the square hole formed inside the movable pipe (55) is the same as the size of the fixed block (54).

6. A variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: There are several clamping pin holes (56) in total. The clamping pin holes (56) penetrate in the horizontal direction of the movable pipe (55). The diameter of the clamping pin hole (56) is the same as the diameter of the fixed pin hole (52). The clamping pin holes (56) are evenly distributed on the same horizontal plane inside the movable pipe (55).

7. A variable diameter PCCP socket lifting clamp according to claim 1, characterized in that: The diagonal brace (58) and the movable tube (55) rotatably connected to the diagonal brace (58) are on the same vertical plane. The top view projection of the diagonal brace (58) is always above the fixed tube (51) and the movable tube (55). The diagonal brace (58) is fixedly connected to the control ring (59) through the support steering knuckle.

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