High-bearing-capacity steel press-open type connector and forming process thereof

Abstract

The invention relates to the technical field of open type connectors, and discloses a high-bearing-capacity steel press-open type connector and a forming process thereof.The high-bearing-capacity steel press-open type connector comprises two symmetrically-arranged clamping rings, a first combination block and a second combination block, the first combination block and the second combination block are fixedly connected with the ends of the two clamping rings correspondingly, and the first combination block and the second combination block are in contact fit; the outer walls of the two clamping rings are fixedly sleeved with outer clamping hoops, connecting blocks are fixedly arranged at the ends, close to each other, of the two outer clamping hoops, a supporting assembly is arranged between the two connecting blocks and used for connecting the two clamping rings, a sliding groove is formed in the outer wall of the first combination block, and a rotating clamping plate is arranged in the sliding groove in a sliding and penetrating mode. According to the high-bearing-capacity steel press-open type connector and the forming process thereof, after the connector is arranged outside a pipeline, the two clamping rings in the connector can be assembled through rotary insertion matching of the clamping plate and the clamping groove of the connector, meanwhile, the two clamping rings are stably limited and cannot deviate due to vibration, and the connecting stability of the connector to the pipeline is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of open joint technology, specifically to a high-load-bearing steel pressure open joint and its forming process. Background Technology

[0002] In the field of pipeline connection, open joints are widely used in industrial transportation, municipal engineering and equipment pipelines due to their advantages of convenient installation and compatibility with various pipe diameters. Their core function is to achieve rapid connection and stable positioning between pipes through a snap-fit ​​structure, ensuring the load-bearing performance and sealing effect of the pipeline system.

[0003] However, existing open joints still have technical defects that affect connection stability and ease of use in practical applications, making it difficult to meet the requirements of high load and long-term stable operation. Specifically, current open joints mainly rely on bolts to limit and fix the pipeline. Bolt holes are pre-set on two retaining rings that are snapped to the outside of the pipeline. The bolts are passed through the holes and tightened with nuts to lock the two retaining rings and thus clamp and limit the pipeline. However, in long-term use, this structure is affected by factors such as pipeline medium flow vibration, equipment operation vibration, or environmental vibration. The bolts and nuts are prone to relative loosening or even deviation, resulting in a decrease in the locking force of the retaining rings and a significant reduction in the stability of the joint. This may not only cause pipeline displacement, but in severe cases, it may also cause pipeline medium leakage, affecting the normal operation of the system. The patent document with announcement number CN216307020U describes a split expansion joint. It uses fastening clips to fit around the sides of two retaining rings to prevent the retaining rings from separating due to loose bolts. However, the fastening clips are set up independently and are independent components from the main body of the split joint. During the installation, disassembly or maintenance of the joint, the clamps are easily lost due to operational negligence. This not only increases the cost of replacing parts, but also delays the progress of pipeline connection work. In addition, the joint cannot effectively prevent detachment after the clamps are lost, which further reduces the safety of pipeline connection. At the same time, when the current joints are connected to the pipeline, they rely solely on a single-layer sealing component inside the joint to achieve the sealing effect, which is poor and cannot effectively prevent fluid from flowing out.

[0004] Therefore, in order to solve the above problems, we propose a high-load-bearing steel press-fit joint and its forming process. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-load-bearing steel pressure-opening joint and its forming process. This joint has the advantage of being able to restrict the position of the joint clamp after it is placed outside the pipeline through the fastening components carried by the joint itself. This solves the problems of existing joints being prone to deviation due to vibration when connected by bolts, or the loss of fastening clips when the bolt position is restricted by external fastening clips.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-load-bearing steel press-fit joint and its forming process, comprising two symmetrically arranged retaining rings, a first assembly block and a second assembly block, the first assembly block and the second assembly block being fixedly connected to the ends of the two retaining rings respectively, the first assembly block and the second assembly block being in contact with each other, the outer walls of the two retaining rings being fixedly fitted with outer clamps, the two outer clamps being fixedly fitted with connecting blocks at their adjacent ends, and a support assembly being provided between the two connecting blocks, the support assembly being used to connect the two retaining rings; The outer wall of the first assembly block is provided with a sliding groove, and a rotating plate slides through the inside of the sliding groove. The second assembly block is provided with a rotating slot on the side near the first assembly block, and the end of the rotating plate is inserted into the rotating slot. A positioning component is provided between the sides of the rotating plate and the second assembly block. The positioning component is used to limit the position of the rotating plate after rotation and to fix the position of the first assembly block and the second assembly block after they are engaged. The inner walls of both retaining rings are fixedly provided with two longitudinally arranged sealing strips, which are arranged opposite each other and are in contact with each other inside the two retaining rings.

[0007] Preferably, the support assembly includes a support base plate and two symmetrically arranged support rods. The two support rods are fixedly mounted on the top of the support base plate and are rotatably mounted inside the two connecting blocks. The support rods are rotatably engaged with the interior of the connecting blocks through their external bearings.

[0008] Preferably, the two connecting blocks are rounded at their adjacent ends to prevent interference when they rotate along the support rod.

[0009] Preferably, the longitudinal sections of the first and second combined blocks are both semi-circular, the sliding groove is an arc-shaped groove, a fixed rod is fixedly provided at the lower end of the inner wall of the sliding groove, a guide rod is fixedly provided on the wall of the fixed rod, the guide rod is an arc-shaped rod, the guide rod is slidably disposed inside the rotating plate, and the guide rod is used to limit the rotation direction of the rotating plate.

[0010] Preferably, the positioning assembly includes a positioning rod, a handle, and a spring. The positioning rod is slidably disposed on the side of the second assembly block, and its end is inserted into the rotating slot. The side of the rotating plate has an insertion hole for engaging the positioning rod. The spring is sleeved on the outside of the positioning rod, and its two ends are fixedly connected to the positioning rod and the second assembly block, respectively. The handle is fixedly disposed on the outer end of the positioning rod.

[0011] Preferably, two adjacent sealing strips are provided with a pushing slope, which is used to squeeze the pipe.

[0012] Preferably, the tops of the two retaining rings are provided with auxiliary limiting grooves at one end close to each other. Both retaining rings are steel retaining rings. An arc-shaped magnetic strip is slidably embedded in the two adjacent auxiliary limiting grooves. The arc-shaped magnetic strip is magnetically engaged with the retaining ring.

[0013] Preferably, the retaining ring has a sealing cavity inside, and the inner wall of the retaining ring has two symmetrically arranged strip holes. The strip holes are connected to the sealing cavity. A sealing airbag is fixedly embedded in one of the strip holes. The middle part of the sealing airbag is located in the sealing cavity, and the other end of the sealing airbag is inserted and engaged with the inside of the strip hole on the other side.

[0014] A forming process for a high-load-bearing steel press-fit joint, the specific process steps are as follows: First, raw material selection and pretreatment: High-strength steel is selected as the raw material for the retaining ring, the first assembly block, the second assembly block, the outer clamp, and the connecting block. The sealing strip is made of rubber material that is resistant to aging and has good elasticity. The arc-shaped magnetic strip is made of strong magnetic permanent magnet material. At the same time, the metal and elastic materials required for accessories such as fixing rod, guide rod, positioning rod, and spring are prepared. All metal raw materials are subjected to surface pretreatment. The oxide layer and oil stains on the surface of the raw materials are removed by rust removal and degreasing processes. Then, tempering heat treatment is carried out to improve the hardness and toughness of the steel, laying the foundation for subsequent processing. Second, the processing and molding of core components: The steel used for the retaining ring, the first assembly block, the second assembly block, the outer clamp and the connecting block is cut using cutting equipment. An auxiliary limiting groove is opened at one end of the top of the retaining ring using milling equipment, and a groove for installing the sealing strip is machined on the inner wall of the retaining ring. Finally, the surface of the retaining ring is galvanized or painted for rust prevention. Third, parts processing: The rotating chuck and rotating slot are processed, and the fixing rod and guide rod are made by cutting and grinding bar stock to ensure that the arc of the guide rod is consistent with the sliding groove. The positioning rod is machined into a stepped shaft structure by lathe, and a handle is welded to its outer end. The spring is selected from standard parts according to the design elastic coefficient, or made by winding steel wire and heat treatment. Fourth: Component assembly and testing / acceptance: Multiple components are assembled sequentially and then tested and accepted.

[0015] Compared with the prior art, the present invention provides a high load-bearing steel pressure-operated joint and its forming process, which has the following beneficial effects: 1. The high-load-bearing steel press-fit joint and its forming process, through the provided retaining rings, outer clamps, first assembly block, second assembly block, support components, rotating retaining plate and rotating retaining groove, and positioning components, can complete the assembly of the two retaining rings inside the joint after the joint is placed outside the pipeline, through the rotating insertion and engagement of the retaining plate and retaining groove provided by the joint. At the same time, the two retaining rings are stably restricted and cannot deviate due to vibration, ensuring the connection stability of the joint to the pipeline.

[0016] 2. The high-load-bearing steel press-opening joint and its forming process, through the provided retaining rings, auxiliary limiting grooves and limiting magnetic strips, can restrict the rotation of the two retaining rings from the top after the two retaining rings are combined, further preventing the internal components from shifting when the joint is connected to the pipeline. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-load-bearing steel pressure-opening joint proposed in this invention; Figure 2 This is a schematic diagram of the joint unfolding structure in this invention; Figure 3 for Figure 2 A three-dimensional structural diagram from another perspective; Figure 4 for Figure 2 A schematic diagram of the mating structure of the first and second assembly blocks; Figure 5 for Figure 1 A three-dimensional structural diagram of the first assembly block from another perspective; Figure 6 for Figure 1 Schematic diagram of the structure of the central sealing strip; Figure 7 for Figure 1 Cross-sectional view of the circlip.

[0018] In the diagram: 1. Snap ring; 2. First assembly block; 3. Second assembly block; 4. Outer clamp; 5. Connecting block; 6. Sliding groove; 7. Rotating plate; 8. Rotating slot; 9. Support base plate; 10. Support rod; 11. Fixing rod; 12. Guide rod; 13. Positioning rod; 14. Handle; 15. Spring; 16. Insertion hole; 17. Auxiliary limiting groove; 18. Arc-shaped magnetic strip; 19. Sealing strip; 20. Sealing cavity; 21. Strip hole; 22. Sealing airbag. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-7 A high-load-bearing steel press-opening joint includes two symmetrically arranged retaining rings 1, a first assembly block 2, and a second assembly block 3. The first assembly block 2 and the second assembly block 3 are respectively fixedly connected to the ends of the two retaining rings 1 and are in contact with each other. The outer walls of the two retaining rings 1 are each fixedly fitted with an outer clamp 4. The two outer clamps 4 are each fixedly fitted with a connecting block 5 at one end close to each other. A support assembly is provided between the two connecting blocks 5. The support assembly is used to connect the two retaining rings 1. The support assembly includes a support base plate 9 and two symmetrically arranged support rods 10. The two support rods 10 are fixedly installed on the top of the support base plate 9 and are rotatably installed inside the two connecting blocks 5. The sides of the two connecting blocks 5 at one end close to each other are rounded to avoid interference when the two connecting blocks 5 rotate along the support rods 10. The support rods 10 are rotatably fitted with the inside of the connecting blocks 5 through their external bearings. The outer wall of the first assembly block 2 is provided with a sliding groove 6, and a rotating plate 7 is slidably inserted inside the sliding groove 6. The second assembly block 3 is provided with a rotating slot 8 on the side close to the first assembly block 2, and the end of the rotating plate 7 is inserted into the rotating slot 8. A positioning component is provided between the side of the rotating plate 7 and the second combination block 3. The positioning component is used to limit the position of the rotating plate 7 after rotation and to fix the position of the first combination block 2 and the second combination block 3 after they are engaged. The longitudinal section of the first combination block 2 and the second combination block 3 is semi-circular. The sliding groove 6 is an arc-shaped groove. A fixing rod 11 is fixedly provided at the lower end of the inner wall of the sliding groove 6. A guide rod 12 is fixedly provided on the rod wall of the fixing rod 11. The guide rod 12 is an arc-shaped rod. The guide rod 12 is slidably provided inside the rotating plate 7. The guide rod 12 is used to limit the rotation direction of the rotating plate 7. The positioning assembly includes a positioning rod 13, a handle 14, and a spring 15. The positioning rod 13 is slidably disposed on the side of the second assembly block 3, and its end is inserted into the rotating slot 8. The side of the rotating plate 7 is provided with an insertion hole 16 for the positioning rod 13 to be inserted. The spring 15 is sleeved on the outside of the positioning rod 13, and its two ends are fixedly connected to the positioning rod 13 and the second assembly block 3 respectively. The handle 14 is fixedly disposed on the outer end of the positioning rod 13. Two longitudinally arranged sealing strips 19 are fixedly provided on the inner walls of both retaining rings 1. The two longitudinal sealing strips 19 are arranged opposite each other, and the two adjacent sealing strips 19 inside the two retaining rings 1 are in contact with each other. The two adjacent sealing strips 19 are provided with pushing slopes, which are used to squeeze the pipe. A sealing cavity 20 is provided inside the retaining ring 1. Two symmetrically arranged strip holes 21 are provided on the inner wall of the retaining ring 1. The strip holes 21 are connected to the sealing cavity 20. A sealing airbag 22 is fixedly embedded in one of the strip holes 21. The middle of the sealing airbag 22 is provided with Inside the sealing cavity 20, the other end of the sealing airbag 22 is fitted into the interior of the strip hole 21 on the other side. When the pipe is inserted into the retaining ring 1, it first contacts one end of the sealing airbag 22, causing the sealing airbag 22 to be compressed, resulting in the internal gas flowing to the other end of the sealing airbag 22. Thus, the other end of the sealing airbag 22 passes through the strip hole 21 on the other side and contacts the outer wall of the pipe. Through the double-ring contact of the sealing airbag 22 with the pipe and the cooperation of multiple sealing strips 19, the multi-layer sealing structure can effectively ensure the sealing performance of the connection between the joint and the pipe. The top of the two retaining rings 1 are provided with auxiliary limiting grooves 17 at one end close to each other. Both retaining rings 1 are steel retaining rings. An arc-shaped magnetic strip 18 is slidably embedded in the two adjacent auxiliary limiting grooves 17. The arc-shaped magnetic strip 18 is magnetically engaged with the retaining ring 1.

[0021] The forming process of high load-bearing steel press-fit joints, the specific process steps are as follows: First, raw material selection and pretreatment: High-strength steel is selected as the raw material for the retaining ring 1, the first combined block 2, the second combined block 3, the outer clamp 4, and the connecting block 5. The sealing strip 19 is made of rubber material with good aging resistance and elasticity. The arc-shaped magnetic strip 18 is made of strong magnetic permanent magnet material. At the same time, the metal and elastic materials required for accessories such as fixing rod 11, guide rod 12, positioning rod 13, and spring 15 are prepared. The surface of the metal raw materials is pretreated by removing the oxide layer and oil stains on the surface of the raw materials through rust removal and degreasing processes. Then, tempering heat treatment is carried out to improve the hardness and toughness of the steel, laying the foundation for subsequent processing. Second, the processing and molding of core components: The retaining ring 1, the first combined block 2, the second combined block 3, the outer clamp 4 and the connecting block 5 are cut with steel using cutting equipment. An auxiliary limiting groove 17 is opened at one end of the top of the retaining ring 1 near the top using milling equipment. A groove for installing the sealing strip 19 is machined on the inner wall of the retaining ring 1. Finally, the surface of the retaining ring 1 is galvanized or painted for rust prevention. Third, parts processing: The rotating clamp 7 and rotating groove 8 are processed. At the same time, the fixing rod 11 and the guide rod 12 are made by cutting and grinding the bar stock to ensure that the arc of the guide rod 12 is consistent with the sliding groove 6. The positioning rod 13 is processed into a stepped shaft structure by lathe, and the handle 14 is welded to its outer end. The spring 15 is selected as a standard part according to the design elastic coefficient, or it is made by winding steel wire and heat treatment. Fourth: Component assembly and testing / acceptance: Multiple components are assembled sequentially and then tested and accepted.

[0022] Working principle: First, adjust the position of the two retaining rings 1 through the support assembly, hold the two retaining rings 1, and rotate the two retaining rings 1 along the bearing outside the support rod 10 with the support rod 10 at the top of the support base plate 9 as the rotation axis through the connecting block 5 (the rounded corner design of the connecting block 5 at one end can avoid interference during rotation), open the two retaining rings 1 and put them on the outside of the pipe to be connected, and then release the retaining rings 1 so that the inner wall of the two retaining rings 1 fits against the outer wall of the pipe; Next, the locking and fixing of the first assembly block 2 and the second assembly block 3 is completed. First, hold the handle 14 and pull the positioning rod 13 outward. The positioning rod 13 compresses the spring 15 and disengages from the rotating slot 8 inside the second assembly block 3. Then, push the rotating plate 7 in the sliding groove 6 on the outer wall of the first assembly block 2 so that the rotating plate 7 slides along the arc-shaped guide rod 12 (the fixing rod 11 provides fixed support for the guide rod 12) until the end of the rotating plate 7 is inserted into the rotating slot 8 of the second assembly block 3. Then, release the handle 14. Under the elastic reset action of the spring 15, the positioning rod 13 automatically slides towards the rotating slot 8 and its end is inserted into the insertion hole 16 on the side of the rotating plate 7. At this time, the rotating plate 7 is fixed by the positioning component. The first assembly block 2 and the second assembly block 3 are stably connected through the cooperation of the rotating plate 7 and the rotating slot 8, thereby firmly locking the two retaining rings 1 to the outside of the pipe and preventing the retaining rings 1 from deviating due to vibration. Meanwhile, the sealing strips 19 on the inner walls of the two retaining rings 1 will be in close contact with the outer wall of the pipe. The pushing slopes of the adjacent sealing strips 19 will squeeze the pipe, enhance the sealing between the joint and the pipe, and prevent the leakage of the pipeline medium. In addition, the arc-shaped magnetic strip 18 is slidably embedded into the auxiliary limiting groove 17 at the top of the two retaining rings 1. The arc-shaped magnetic strip 18 and the steel retaining ring 1 are magnetically engaged to further limit the relative displacement of the two retaining rings 1, providing additional limiting for the retaining rings 1 from the top, and improving the overall load-bearing stability and connection reliability of the joint. When it is necessary to disassemble the connector, simply pull the handle 14 again to disengage the positioning rod 13 from the socket 16, push the rotating plate 7 in the opposite direction to disengage it from the rotating slot 8, and then open the two retaining rings 1 to remove the connector from the pipe. The operation is convenient and does not rely on external accessories, avoiding the risk of losing accessories.

[0023] It should be noted that the term "comprising" or any other variation thereof is 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-load-bearing steel press-fit joint, comprising two symmetrically arranged retaining rings (1), a first assembly block (2), and a second assembly block (3), characterized in that: The first combination block (2) and the second combination block (3) are respectively fixedly connected to the ends of the two retaining rings (1). The first combination block (2) and the second combination block (3) are in contact with each other. The outer walls of the two retaining rings (1) are fixedly fitted with outer clamps (4). The two outer clamps (4) are fixedly fitted with connecting blocks (5) at one end close to each other. A support component is provided between the two connecting blocks (5). The support component is used to connect the two retaining rings (1). The outer wall of the first assembly block (2) is provided with a sliding groove (6), and a rotating plate (7) slides through the inside of the sliding groove (6). The second assembly block (3) is provided with a rotating slot (8) on the side close to the first assembly block (2), and the end of the rotating plate (7) is inserted into the rotating slot (8). A positioning component is provided between the side of the rotating plate (7) and the second combination block (3). The positioning component is used to limit the position of the rotating plate (7) after rotation and also to fix the position of the first combination block (2) and the second combination block (3) after they are engaged. The inner walls of the two retaining rings (1) are each fixed with two longitudinally arranged sealing strips (19), the two longitudinal sealing strips (19) are arranged opposite each other, and the two adjacent sealing strips (19) inside the two retaining rings (1) are in contact and fit together.

2. The high-load-bearing steel press-fit joint according to claim 1, characterized in that: The support assembly includes a support base plate (9) and two symmetrically arranged support rods (10). The two support rods (10) are fixedly mounted on the top of the support base plate (9). The two support rods (10) are rotatably mounted inside the two connecting blocks (5). The support rods (10) are rotatably engaged with the inside of the connecting blocks (5) through their external bearings.

3. The high-load-bearing steel press-fit joint according to claim 2, characterized in that: The two connecting blocks (5) are rounded at one end to prevent interference when they rotate along the support rod (10).

4. The high-load-bearing steel press-fit joint according to claim 1, characterized in that: The longitudinal sections of the first combination block (2) and the second combination block (3) are both semi-circular. The sliding groove (6) is an arc-shaped groove. A fixing rod (11) is fixedly provided at the lower end of the inner wall of the sliding groove (6). A guide rod (12) is fixedly provided on the rod wall of the fixing rod (11). The guide rod (12) is an arc-shaped rod. The guide rod (12) is slidably provided inside the rotating plate (7). The guide rod (12) is used to limit the rotation direction of the rotating plate (7).

5. A high-load-bearing steel press-fit joint according to claim 1, characterized in that: The positioning assembly includes a positioning rod (13), a grip (14), and a spring (15). The positioning rod (13) is slidably disposed on the side of the second assembly block (3), and its end is inserted into the rotating slot (8). The side of the rotating plate (7) is provided with a socket (16) for inserting the positioning rod (13). The spring (15) is sleeved on the outside of the positioning rod (13), and its two ends are fixedly connected to the positioning rod (13) and the second assembly block (3) respectively. The grip (14) is fixedly disposed on the outer end of the positioning rod (13).

6. A high-load-bearing steel press-fit joint according to claim 1, characterized in that: Two adjacent sealing strips (19) are provided with a pushing slope, which is used to squeeze the pipe.

7. A high-load-bearing steel press-fit joint according to claim 1, characterized in that: The top of the two retaining rings (1) are provided with auxiliary limiting grooves (17) at one end close to each other. Both retaining rings (1) are steel retaining rings. An arc-shaped magnetic strip (18) is slidably embedded in the two adjacent auxiliary limiting grooves (17). The arc-shaped magnetic strip (18) is magnetically engaged with the retaining ring (1).

8. A high-load-bearing steel press-fit joint according to claim 1, characterized in that: The retaining ring (1) has a sealing cavity (20) inside. The inner wall of the retaining ring (1) has two symmetrically arranged strip holes (21). The strip holes (21) are connected to the sealing cavity (20). A sealing airbag (22) is fixedly embedded in one of the strip holes (21). The middle part of the sealing airbag (22) is located in the sealing cavity (20). The other end of the sealing airbag (22) is inserted and engaged with the inside of the strip hole (21) on the other side.

9. A forming process for a high-load-bearing steel press-fit joint, characterized in that: Including the high-load-bearing steel press-fit joint based on any one of claims 1-8, the specific process steps are as follows: First, raw material selection and pretreatment: High-strength steel is selected as the raw material for the retaining ring 1, the first combined block 2, the second combined block 3, the outer clamp 4, and the connecting block 5. The sealing strip 19 is made of rubber material with good aging resistance and elasticity. The arc-shaped magnetic strip 18 is made of strong magnetic permanent magnet material. At the same time, the metal and elastic materials required for accessories such as the fixing rod 11, the guide rod 12, the positioning rod 13, and the spring 15 are prepared. All metal raw materials are surface pretreated. The oxide layer and oil stains on the surface of the raw materials are removed by rust removal and degreasing process. Then, tempering heat treatment is carried out to improve the hardness and toughness of the steel, laying the foundation for subsequent processing. Second, the processing and molding of core components: The steel used for the retaining ring 1, the first combined block 2, the second combined block 3, the outer clamp 4 and the connecting block 5 is cut using a cutting device. An auxiliary limiting groove 17 is opened at one end of the top of the retaining ring 1 near the other using a milling device. A groove for installing the sealing strip 19 is machined on the inner wall of the retaining ring 1. Finally, the surface of the retaining ring 1 is galvanized or painted for rust prevention. Third, parts processing: The rotating clamp 7 and rotating groove 8 are processed. At the same time, the fixing rod 11 and the guide rod 12 are made by cutting and grinding the bar stock to ensure that the arc of the guide rod 12 is consistent with the sliding groove 6. The positioning rod 13 is processed into a stepped shaft structure by lathe, and the handle 14 is welded to its outer end. The spring 15 is selected as a standard part according to the design elastic coefficient, or it is made by winding steel wire and heat treatment. Fourth: Component assembly and testing / acceptance: Multiple components are assembled sequentially and then tested and accepted.

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