Quick-change hoisting connection device for booster pump

Abstract

This utility model belongs to the field of lifting pump technology and discloses a quick-change lifting connection device for lifting pumps, including a U-shaped shackle. The U-shaped shackle is movably connected to a hook with holes. The U-shaped shackle includes a U-shaped rod, and the bottom end of the U-shaped rod is fixedly connected to a left fixing block and a right fixing block. The left fixing block and the right fixing block are respectively provided with a left through hole and a right through hole. A pin is provided in the left through hole and the right through hole. A limit groove is provided at the bottom of the pin. A limit slider is provided in the limit groove. The limit slider is located on the inner wall of the right through hole. An elastic positioning component is provided at the bottom of the left fixing block. Through the movable connection structure of the U-shaped shackle and the hook with holes, the device breaks through the equipment matching barrier of traditional lifting and is compatible with the large hook of the crane and the small lifting ring of the lifting pump, solving the size incompatibility problem in one go.

Description

Technical Field

[0001] This utility model belongs to the field of lifting pump technology, specifically a quick-change lifting connection device for lifting pumps. Background Technology

[0002] During the maintenance of sewage tank lift pumps in factory areas, the sewage tanks are typically over 7 meters deep, and the hoisting and installation of the lift pumps require overhead crane operations. However, existing technologies have the following key challenges: The specifications of overhead crane hooks are generally too large, while the chain lifting rings that come with the lift pump are too small. When the two are directly connected, there is a structural mismatch problem. The overhead crane hook cannot stably engage the small lifting ring, which can easily lead to the risk of slippage during the lifting process. The lack of a matching intermediary device makes it difficult to achieve flexible connection between the overhead crane, the lift pump, and the auxiliary hoist, thus restricting the feasibility of the lifting operation.

[0003] Therefore, a quick-change hoisting connection device for booster pumps is proposed to address the above problems. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides a quick-change hoisting connection device for booster pumps, which has the advantages of strong equipment adaptability, safe and convenient operation, and the ability to achieve efficient conversion and buffer protection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-change hoisting connection device for a booster pump, including a U-shaped shackle, wherein the U-shaped shackle is movably connected to a hook with holes; The U-shaped shackle includes a U-shaped rod, with a left fixing block and a right fixing block fixedly connected to the bottom end of the U-shaped rod. The left fixing block and the right fixing block are respectively provided with a left through hole and a right through hole. A pin is provided in the left through hole and the right through hole. A limit groove is provided at the bottom of the pin. A limit slider is provided in the limit groove. The limit slider is provided on the inner wall of the right through hole. An elastic positioning component is provided at the bottom of the left fixing block. The perforated hook includes a hook segment, a cylindrical segment fixedly connected to the top of the hook segment, a corresponding hole on the cylindrical segment, a pin passing through the corresponding hole, springs connected to the left and right sides of the cylindrical segment, the springs being sleeved on the pin, and a retaining ring connected to the end of the spring away from the cylindrical segment, the retaining ring being sleeved on the pin.

[0006] Preferably, a limiting plate is fixedly connected to the right end of the pin, and a push-pull ring is fixedly connected to the right side of the limiting plate.

[0007] Preferably, the diameter of the limiting plate is larger than the inner diameter of the through hole on the right side.

[0008] Preferably, the limiting groove is arranged along the axial direction of the pin, and both ends of the limiting groove are closed structures.

[0009] Preferably, the elastic positioning component includes a fixed shell fixed to the bottom of the left fixed block, a movable plate is provided inside the fixed shell, a positioning rod is connected to the top of the movable plate, the positioning rod passes through the left fixed block and extends into the left through hole, a positioning groove is opened on the pin corresponding to the positioning rod, the end of the positioning rod extends into the positioning groove, a pull rod is fixedly connected to the bottom of the movable plate, the bottom end of the pull rod passes through the fixed shell, a return spring is sleeved on the pull rod inside the fixed shell, and the return spring is located at the bottom of the movable plate.

[0010] Preferably, a pull ring is fixedly connected to the bottom end of the pull rod, and the pull ring is located below the fixed shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model breaks through the equipment matching barrier of traditional hoisting by using a U-shaped shackle and a movable connection structure with a perforated hook. It is compatible with both the large hook of the overhead crane and the small lifting ring of the lifting pump, thus solving the problem of size incompatibility in one go. 2. The structural design of this utility model U-shaped shackle focuses on connection reliability and operational efficiency. The limiting groove and the limiting groove slider of the pin restrict its movement only along the axial direction to prevent rotation and loosening. The elastic positioning component is inserted into the positioning groove of the pin through the positioning rod and automatically locked with the return spring. Even under impact load, the connection can be stable, completely eliminating the safety hazard of the pin falling off accidentally. 3. The structure of the perforated hook of this utility model is optimized around hoisting stability and equipment protection. The springs and retaining rings on both sides of the cylindrical section form an elastic buffer system to avoid impacting the U-shaped shackle and reduce rigid damage to the lifting pump ring by the hook section, thus extending the service life of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the external structure of the U-shaped shackle of this utility model; Figure 3 This is a cross-sectional view of the U-shaped shackle of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a cross-sectional structural schematic diagram of the pin of this utility model; Figure 6 This is a schematic diagram of the structure of the perforated hook of this utility model.

[0013] In the diagram: 1—U-shaped shackle; 2—Hook with a hole; 11—U-shaped rod; 12—Left side fixing block; 13—Right side fixing block; 14—Left side through hole; 15—Right side through hole; 16—Pin rod; 17—Limiting slide groove; 18—Limiting slider; 19—Elastic positioning component; 1901—Fixed shell; 1902—Modible plate; 1903—Positioning rod; 1904—Positioning groove; 1905—Pull rod; 1906—Reset spring; 1907—Pull ring; 110—Limiting plate; 111—Push-pull ring; 21—Hook section; 22—Cylindrical section; 23—Corresponding hole; 24—Spring; 25—Retaining ring. Detailed Implementation

[0014] 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.

[0015] like Figures 1 to 6 As shown, this utility model provides a quick-change hoisting connection device for a lifting pump, including a U-shaped shackle 1. The U-shaped shackle 1 is movably connected to the hook with a hole 2 to build an adaptable bridge between the crane and the lifting pump, so as to realize quick conversion and connection between the hoisting equipment. The U-shaped shackle 1 is movably connected to the hook with a hole 2. The U-shaped shackle 1 includes a U-shaped rod 11, which serves as the main load-bearing structure, providing a stable foundation for hoisting and ensuring the overall load-bearing capacity of the device. The bottom end of the U-shaped rod 11 is fixedly connected to a left-side fixing block 12 and a right-side fixing block 13. These blocks provide installation support for the pin 16, ensuring the coaxiality of the pin 16 connection and improving structural stability. The left-side fixing block 12 and right-side fixing block 13 are respectively provided with a left-side through hole 14 and a right-side through hole 15, providing a passage for the pin 16 to pass through, enabling the U-shaped shackle 1 to move and connect with the perforated hook 2. The pin 16 is installed within the left-side through hole 14 and right-side through hole 15, serving as the core connector, passing through the U-shaped shackle 1 and the perforated hook 2 to achieve the connection between the two. The hinge provides rotational flexibility for hoisting and conversion. A limiting groove 17 is provided at the bottom of the pin 16. The limiting groove 17 cooperates with the limiting slider 18 to constrain the pin 16 to move only along the axial direction, preventing rotational loosening and improving connection safety. The limiting slider 18 is set in the limiting groove 17. The limiting slider 18 is embedded in the limiting groove 17 to form an axial guide, preventing the pin 16 from deflecting when under hoisting force and ensuring connection stability. The limiting slider 18 is set on the inner wall of the right through hole 15. The limiting slider 18 is integrated into the inner wall of the right through hole 15, simplifying the structure and ensuring the fitting accuracy with the limiting groove 17. An elastic positioning component 19 is provided at the bottom of the left fixing block 12. The elastic positioning component 19 realizes the automatic locking and unlocking of the pin 16 without additional tools, improving the convenience and safety of operation. The perforated hook 2 includes a hook segment 21, which adopts a hook design to adapt to the hooking requirements of the lifting pump lifting ring. It automatically aligns during hooking, improving docking efficiency. A cylindrical segment 22 is fixedly connected to the top of the hook segment 21. The cylindrical segment 22 provides an installation carrier for the corresponding hole 23, while also enhancing the structural strength of the connection between the hook segment 21 and the pin 16, avoiding stress concentration. The cylindrical segment 22 has a corresponding hole 23 for the pin 16 to pass through, achieving a hinged connection between the perforated hook 2 and the U-shaped shackle 1, providing freedom for lifting and swinging. The pin 16 passes through the corresponding hole 23, allowing the hook to... The hook 2 can rotate around the pin 16 to adapt to the attitude adjustment of the lifting pump during hoisting. Springs 24 are connected to the left and right sides of the cylindrical section 22. Springs 24 provide elastic buffering, absorb the impact load during hoisting, protect the lifting pump ring, and extend the equipment life. Springs 24 are sleeved on the pin 16. With the pin as the guide shaft, the springs 24 and 25 are connected to the pin 16. The pin 16 is used as the guide shaft to ensure coaxiality during compression and improve buffering stability. A retaining ring 25 is connected to the end of the spring 24 away from the cylindrical section 22. The retaining ring 25 is sleeved on the pin 16. The retaining ring 25 is fixed and easy to assemble. It works with the spring 24 to form an elastic buffering system.

[0016] Specifically, a limiting plate 110 is fixedly connected to the right end of the pin 16. The limiting plate 110 prevents the pin 16 from axially dislodging. Together with the elastic positioning component 19 on the left, it forms a bidirectional limiting, which improves the reliability of the connection. A push-pull ring 111 is fixedly connected to the right side of the limiting plate 110. The push-pull ring 111 provides a force application point for the operation of the pin 16, making it easy to insert and remove the pin 16.

[0017] Furthermore, the diameter of the limiting plate 110 is larger than the inner diameter of the right through hole 15. The diameter design of the limiting plate 110 prevents it from penetrating the right through hole 15, ensuring the effectiveness of the axial limiting of the pin 16 and avoiding connection failure.

[0018] Furthermore, the limiting slide groove 17 is arranged axially along the pin 16. This axial arrangement ensures that the pin 16 moves only in the direction of force, constraining its degree of freedom and improving connection stability. Both ends of the limiting slide groove 17 are closed structures to prevent the limiting slider 18 from sliding out, ensuring the guiding function remains effective and preventing structural failure. It is worth noting that the elastic positioning component 19 includes a fixed shell 1901 fixed to the bottom of the left fixed block 12. The fixed shell 1901 provides installation space for the elastic component, isolates it from sewage erosion, and improves the component's durability. A movable plate 1902 is provided inside the fixed shell 1901. The movable plate 1902 carries the positioning rod 1903. The positioning rod 1903 can be extended or retracted by moving up and down, thus locking / unlocking the pin 16. The top of the movable plate 1902 is connected to the positioning rod 1903. The positioning rod 1903 is inserted into the positioning groove 1904 of the pin 16 to achieve mechanical locking of the pin 16 and prevent accidental slippage during hoisting. The positioning rod 1903 passes through the left fixed block 12 and extends into the left through hole 14. The through design of the positioning rod 1903 ensures the alignment accuracy with the pin 16 and improves the locking reliability. A positioning groove 1904 is opened on the pin 16 at the position corresponding to the positioning rod 1903. 4. A locking space is provided for the positioning rod 1903 to form an axial lock and enhance the connection safety. The end of the positioning rod 1903 extends into the positioning groove 1904. The positioning rod 1903 and the return spring 1906 work together to achieve automatic locking. A pull rod 1905 is fixedly connected to the bottom of the movable plate 1902. The pull rod 1905 provides an operating interface for the movable plate 1902. Pulling down unlocks the positioning rod 1903, which is convenient to operate. The bottom end of the pull rod 1905 passes through the fixed shell 1901, so that the pull ring 1907 is located on the outside. The return spring 1906 is sleeved on the pull rod 1905 inside the fixed shell 1901. The return spring 1906 provides a rebound force to the movable plate 1902 to realize the automatic reset and locking of the positioning rod 1903 without manual intervention. The return spring 1906 is located at the bottom of the movable plate 1902.

[0019] It is worth noting that a pull ring 1907 is fixedly connected to the bottom end of the pull rod 1905. The pull ring 1907 increases the force application area, making it easier to operate and improving the ease of unlocking. The pull ring 1907 is located below the fixed shell 1901.

[0020] Working principle and process: First, the pin 16 is inserted into the right through hole 15 of the right fixing block 13 through the push-pull ring 111, so that the limiting slider 18 is embedded in the limiting groove 17 of the pin 16. Then, it passes through the corresponding hole 23 on the cylindrical section 22 of the perforated hook 2 and extends into the left through hole 14 of the left fixing block 12. At this time, the positioning rod 1903 of the elastic positioning component 19 extends into the positioning groove 1904 of the pin 16 under the action of the return spring 1906 to complete the locking. Then, the U-shaped rod 11 of the U-shaped shackle 1 is hooked on the crane hook. When lifting, the lifting pump lifting ring is hooked through the hook section 21. The spring 24 is compressed to buffer the impact. The limiting groove 17 and the limiting slider 18 ensure the stability of the pin 16. During installation, the crane is finely adjusted to align the lifting pump with the base. After the pump body is fixed, the device is loosened, and the perforated hook 2 can be removed from the lifting pump lifting ring.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-change hoisting connection device for a booster pump, comprising a U-shaped shackle (1), characterized in that: The U-shaped shackle (1) is movably connected to a perforated hook (2); The U-shaped shackle (1) includes a U-shaped rod (11), and a left fixing block (12) and a right fixing block (13) are fixedly connected to the bottom end of the U-shaped rod (11). A left through hole (14) and a right through hole (15) are respectively opened on the left fixing block (12) and the right fixing block (13). A pin (16) is provided in the left through hole (14) and the right through hole (15). A limiting groove (17) is opened at the bottom of the pin (16). A limiting slider (18) is provided in the limiting groove (17). The limiting slider (18) is located on the inner wall of the right through hole (15). An elastic positioning component (19) is provided at the bottom of the left fixing block (12). The perforated hook (2) includes a hook segment (21), the top of which is connected to a cylindrical segment (22), and a corresponding hole (23) is provided on the cylindrical segment (22). The pin (16) passes through the corresponding hole (23). Springs (24) are connected to the left and right sides of the cylindrical segment (22), and the springs (24) are sleeved on the pin (16). A retaining ring (25) is connected to the end of the spring (24) away from the cylindrical segment (22), and the retaining ring (25) is sleeved on the pin (16).

2. The quick-change hoisting connection device for the booster pump according to claim 1, characterized in that: The right end of the pin (16) is fixedly connected to a limiting plate (110), and a push-pull ring (111) is fixedly connected to the right side of the limiting plate (110).

3. The quick-change hoisting connection device for the booster pump according to claim 2, characterized in that: The diameter of the limiting plate (110) is larger than the inner diameter of the right through hole (15).

4. The quick-change hoisting connection device for the lift pump according to any one of claims 1-3, characterized in that: The limiting groove (17) is arranged axially along the pin (16), and both ends of the limiting groove (17) are closed structures.

5. The quick-change hoisting connection device for the lift pump according to any one of claims 1-3, characterized in that: The elastic positioning component (19) includes a fixed shell (1901) fixed to the bottom of the left fixed block (12). A movable plate (1902) is provided inside the fixed shell (1901). A positioning rod (1903) is connected to the top of the movable plate (1902). The positioning rod (1903) passes through the left fixed block (12) and extends into the left through hole (14). A positioning groove (1904) is provided on the pin (16) at the position corresponding to the positioning rod (1903). The end of the positioning rod (1903) extends into the positioning groove (1904). A pull rod (1905) is fixedly connected to the bottom of the movable plate (1902). The bottom end of the pull rod (1905) passes through the fixed shell (1901). A return spring (1906) is sleeved on the pull rod (1905) inside the fixed shell (1901). The return spring (1906) is located at the bottom of the movable plate (1902).

6. The quick-change hoisting connection device for the booster pump according to claim 5, characterized in that: The bottom end of the pull rod (1905) is fixedly connected to a pull ring (1907), which is located below the fixed shell (1901).

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