A-type quick-plug connector hollow bolt capable of being repeatedly disassembled and assembled and machining detection device of a-type quick-plug connector hollow bolt

Abstract

The invention relates to the field of bolt detection, and particularly discloses an a-type quick-plug connector hollow bolt capable of being repeatedly disassembled and assembled and a machining detection device of the a-type quick-plug connector hollow bolt capable of being repeatedly disassembled and assembled. The mounting plate is provided with a first detection assembly used for detecting the influence of the number of the clamping groups on the clamping strength of the pipeline, and is provided with a second detection assembly used for detecting the influence of the length of the clamping ring on the clamping strength of the pipeline. The drawing assembly is used for testing the tensile strength of the pipeline and the hollow bolt, and the sealing assembly is used for detecting the sealing performance between the pipeline and the hollow bolt. According to the method, the influence of different snap ring group numbers and snap ring lengths on the connection performance of the hollow bolt and the pipeline can be quickly identified, so that the optimal connection parameters corresponding to pipelines of different specifications are determined, and the detection efficiency and the matching accuracy are effectively improved.

Description

Technical Field

[0001] This application relates to the field of bolt inspection, and in particular to a reusable, removable, type A quick-connect hollow bolt and its processing and inspection device. Background Technology

[0002] Currently, Type A quick-connect hollow bolts are a highly efficient pipe connection component, widely used in hydraulic transmission systems, pneumatic control systems, automotive manufacturing, construction machinery, and aerospace. With their compact structure, rapid connection, and reliable sealing, they are particularly suitable for fluid pipeline connections requiring frequent assembly and disassembly or in space-constrained environments.

[0003] Hollow bolts in the prior art typically include a threaded base, a sealing ring fitted outside the threaded base, a retaining ring snapped onto the top of the threaded base, and a retaining ring located inside the retaining ring. The retaining ring includes a snap-fit ​​portion that movably abuts against the pipe, and a stop portion located within the retaining ring. When installing the pipe, technicians first insert the pipe through one end of the hollow bolt, allowing it to pass through the inner hole of the bolt base. Then, a reducing nut is screwed into the external thread of the bolt base. As the nut is tightened, its tapered inner wall applies a radially inward pressure to the retaining ring. This force is transmitted to the retaining ring, causing it to radially contract, thus tightly engaging with the outer wall of the pipe, achieving a secure seal between the pipe and the fitting. In the prior art, mechanical pull-out equipment is typically used to test the connection strength of the hollow bolt. The snap-fit ​​strength of the retaining ring is determined by identifying the tensile force value on a tension sensor inside the equipment.

[0004] However, in existing technologies, when performing pull-out tests on pipes of different specifications to determine the connection strength between hollow bolts and pipes, it is usually necessary to replace the hollow bolts with different numbers of retainer sets and test them one by one to evaluate the locking effect under different retainer configurations. Simultaneously, the sealing performance of the connection between each set of hollow bolts and the pipe must be tested, and the connection strength and sealing performance must be comprehensively compared to select the hollow bolts that match the target pipe. This testing method is cumbersome, has a long testing cycle, and is difficult to efficiently and accurately determine the optimal bolt configuration scheme, therefore, it urgently needs improvement. Summary of the Invention

[0005] To address the cumbersome and inefficient process of testing hollow bolts compatible with pipes of different specifications using existing equipment, this application provides a reusable, disassembled type A quick-connect hollow bolt and its processing and testing device.

[0006] The technical solution provided in this application for a reusable, detachable, type A quick-connect hollow bolt and its processing and testing device is as follows: A reusable, detachable type A quick-connect fitting hollow bolt processing and testing device includes a machine body, a clamping plate on the machine body, and a mounting plate slidably mounted on the machine body. The mounting plate is equipped with a first testing component for detecting the influence of the number of retaining rings on the pipe clamping strength, a second testing component for detecting the influence of the retaining ring length on the pipe clamping strength, a pull-out component for testing the tensile strength between the pipe and the hollow bolt, and a sealing component for detecting the sealing performance between the pipe and the hollow bolt.

[0007] By adopting the above technical solution, the length of the retaining ring and the contact area between the retaining ring and the pipeline will directly affect the radial pressure applied by the retaining ring to the pipeline. In addition, during the tightening process, the retaining ring may cause plastic deformation of the pipeline, resulting in a gap between the pipeline and the hollow bolt, which will reduce the sealing performance of the pipeline connection and affect the normal use of the pipeline. In the existing technology, when conducting experiments with a pull-out device, it is necessary to change different hollow spirals for testing and simultaneously test the sealing performance of different hollow bolts to ensure the connection performance and sealing performance of the hollow bolts.

[0008] When inspecting pipes of different specifications, technicians first fix hollow bolts to the clamping plate, and then insert the pipes into the inner holes of the hollow bolts. By adjusting the number of sets of retaining rings that contact the outer wall of the pipe with the hollow bolts through the first inspection component, the influence of different numbers of retaining ring sets on the connection performance between the hollow bolts and the pipes is tested, so as to determine the optimal number of retaining ring sets for pipes of different specifications.

[0009] The second detection component changes the relative position of the two retaining rings in each group of retaining rings, thereby adjusting the contact length between the retaining ring and the pipe. This allows for the determination of the relationship between the contact length and connection performance of the retaining rings with the same number of retaining ring groups, ultimately identifying the optimal retaining ring length for different pipe specifications. When conducting the test, technicians must first adjust the position of the two retaining rings in each group using the second detection component, and then use the second detection component to engage the retaining rings on the hollow bolts with the pipe, thus completing the test. If the first detection component is adjusted first, it will engage the retaining rings with the pipe, and the second detection component will no longer be able to adjust the relative position of the two retaining rings in each group.

[0010] The sealing performance and tensile strength of the pipeline are tested by sealing and pulling components respectively. The connection strength and sealing effect are comprehensively evaluated, and the optimal clamp length and clamp number configuration for the pipeline connection are finally determined. With the first and second detection components, hollow bolts that are compatible with different specifications of pipelines can be quickly identified while ensuring the pipeline connection performance and sealing performance. The optimal number of clamps and clamp length on the hollow bolts can also be identified, which effectively improves the detection efficiency and matching accuracy.

[0011] Optionally, the first detection component includes a first detection cylinder rotatably mounted on the machine body, the first detection cylinder being threadedly connected to the threaded base, a first toothed ring being coaxially fixed to the outer peripheral wall of the detection cylinder, a first gear being rotatably mounted on the machine body and meshing with the first toothed ring, and a first driving member being mounted on the machine body to drive the gear to rotate.

[0012] By adopting the above technical solution, the first driving component drives the first detection cylinder to rotate through the first gear and the first gear ring. The first detection cylinder is screwed into the threaded base. By changing the number of rotations of the first detection cylinder, the number of retaining rings in contact with the pipeline is different, thereby detecting the performance of the contact between the retaining ring and the pipeline at the pipeline connection.

[0013] Optionally, the second detection component includes a second detection cylinder rotatably mounted on the machine body, a first abutting block fixedly connected to the second detection cylinder, a detection ring rotatably mounted coaxially on one end of the second detection cylinder, a second abutting block fixedly connected to the outer peripheral wall of the detection ring, the first abutting block and the second abutting block respectively movably engaging with the abutting portion on each set of retaining rings, a second toothed ring fixedly connected to the outer peripheral wall of the second detection cylinder, a second gear rotatably mounted on the machine body meshing with the second toothed ring, a second power component driving the second gear to rotate on the machine body, and a synchronizing component driving the detection ring to rotate.

[0014] By adopting the above technical solution, the second power component drives the second detection cylinder to rotate through the second gear and the second rack. The first clamping block on the second detection cylinder abuts against the abutting part on one of the retaining rings in each group. The second detection cylinder drives the detection ring to rotate through the synchronizing component, and the rotation direction of the detection ring is opposite to the rotation direction of the second detection cylinder. The second clamping block on the detection ring abuts against the abutting part on the other retaining ring in each group, thereby causing the two retaining rings located in the fixed groove to move towards each other along the fixed groove, thereby changing the contact length between each group of retaining rings and the pipeline, and detecting the effect of the contact length between the retaining rings and the pipeline on the performance of the pipeline connection.

[0015] Optionally, the synchronizing element includes a driving wheel rotatably disposed within a second detection cylinder, a first transmission rod coaxially fixed to the end face of the driving wheel, a first bevel gear fixed to the end of the first transmission rod away from the driving wheel, a driven wheel rotatably disposed within the detection ring, a second transmission rod coaxially fixed to the driven wheel, a second bevel gear fixed to the end of the second transmission rod away from the driven wheel, a third bevel gear rotatably disposed within the second detection cylinder that meshes with the first bevel gear / second bevel gear, a third toothed ring coaxially fixed to the inner peripheral wall of the first detection cylinder that meshes with the driving wheel, and a fourth toothed ring coaxially fixed to the inner peripheral wall of the detection ring that meshes with the driven wheel.

[0016] By adopting the above technical solution, when the second detection cylinder is rotated, the first detection cylinder does not rotate. The driving wheel on the second detection cylinder meshes with the third gear ring. The driving wheel drives the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate through the third bevel gear. The second bevel gear drives the detection ring to rotate through the driven wheel, and makes the rotation direction of the detection ring opposite to the rotation direction of the second detection ring, so that the two retaining rings in each set of retaining rings move towards each other simultaneously.

[0017] Optionally, the second detection cylinder is rotatably mounted on the first detection cylinder, a limiting ring is coaxially fixed to the outer peripheral wall of the second detection cylinder, and a limiting groove is provided on the inner peripheral wall of the first detection cylinder to be movably adapted to the limiting ring.

[0018] By adopting the above technical solution, when the first detection cylinder is screwed into the threaded base, the first detection cylinder drives the second detection cylinder to rotate simultaneously. When it is necessary to adjust the contact length between each set of retaining rings and the pipeline, the second detection cylinder is rotated, and the rotation direction of the second detection cylinder is opposite to the rotation direction of the first detection cylinder. The limiting ring and the limiting groove provide the basis for the rotation of the first and second detection cylinders.

[0019] Optionally, the second detection cylinder includes a first fixing part, a variable diameter part, and a second fixing part. The inner diameter of the variable diameter part gradually decreases in the direction away from the first detection cylinder and the transition is smooth. The inclined side of the variable diameter part is movably pressed against the abutting part. The inner peripheral wall of the second fixing part is movably pressed against the abutting part. The aperture of the first fixing part is larger than the aperture of the second fixing part.

[0020] By adopting the above technical solution, the diameter of the first fixing part is larger than the diameter of the second fixing part, and the inner peripheral wall of the first fixing part does not contact the retaining ring. When the first detection cylinder drives the second detection cylinder to rotate and move, the inner peripheral wall of the variable diameter part moves and abuts against the abutting part on the retaining ring, and gradually increases the radial pressure generated by the retaining ring, thereby clamping the pipeline.

[0021] Optionally, the airtight assembly includes a vent hole on the first detection cylinder, and an air pipe is connected to the end of the second detection cylinder away from the first detection cylinder. The air pipe is sealed against the fixing ring, and inspection gas flows through the air pipe.

[0022] By adopting the above technical solution, after the technicians rotate the first and second adjusting cylinders, they introduce detection gas into the air pipe and block the pipe at the end furthest from the hollow bolt. There is no gap between the hollow bolt and the pipe, so the detection gas is located inside the pipe and will not overflow. If there is a gap, the detection gas first flows from the gap between the hollow bolt and the pipe into the space between the first detection cylinder and the hollow bolt, and then flows out through the vent hole. The sealing performance of the pipe connection can be determined by identifying the amount of detection gas flowing out of the vent hole.

[0023] Optionally, the pulling assembly includes a hydraulic cylinder mounted on the machine body, the output end of the hydraulic cylinder being fixed to the clamping plate, a tension sensor being provided at the connection between the hydraulic cylinder and the clamping plate, a controller being provided on the machine body, and the tension sensor being electrically connected to the controller.

[0024] By adopting the above technical solution, after the technicians adjust the first and second detection components and the airtight component is tested, the controller controls the hydraulic cylinder to start. The hydraulic cylinder drives the hollow bolt to move through the clamping plate, and the tension sensor identifies the clamping strength between the circlip and the pipe. The technicians combine the data from the tension sensor and the airtight component to determine the optimal length and number of circlips at the pipe connection.

[0025] A reusable and removable type A quick-connect hollow bolt includes a threaded base, a sealing ring fitted on the threaded base, and a retaining ring snapped into the top of the threaded base. The retaining ring is characterized by having multiple spaced-apart retaining grooves, and multiple sets of retaining rings adapted to the retaining grooves inserted into the retaining ring. Each set of retaining rings includes two retaining rings, each retaining ring comprising a connecting portion, retaining portions located on both sides of the connecting portion, and an abutting portion located at the end of the retaining portion furthest from the connecting portion. When connecting pipes, the snap-fit ​​part is in movable contact with the outer peripheral wall of the pipe, and the abutment part is in movable contact with the inner peripheral wall of the reducing nut.

[0026] By adopting the above technical solution, when technicians connect pipes, they first insert the pipe into the inner hole of the threaded base and make the pipe extend out of the threaded base. Then, they rotate the reducing nut, which screws into the threaded base and abuts against the abutment part on the retaining ring. The abutment part is pressed radially, and the retaining part on the retaining ring is engaged with the pipe, thereby fixing the pipe.

[0027] When technicians disassemble pipes, they first loosen the reducing nut, then use pliers or other tools to clamp the connecting part of the retaining ring, which can then be pulled out of the retaining ring. The hollow bolt can then be removed. The hollow bolt does not require damage to the retaining ring and the retaining ring, which effectively improves disassembly efficiency and facilitates the recycling and reuse of the retaining ring.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. When technicians disassemble the pipeline, they first loosen the reducing nut from the hollow bolt. The abutting part on the retaining ring extends out of the fixing groove under the action of the elastic force. The technicians then use tools to clamp the connecting part of the retaining ring and remove the retaining ring from the fixing groove to complete the pipeline disassembly. Compared with the existing technology that requires destroying the fixing ring to disassemble the pipeline, this hollow bolt improves the convenience of pipeline disassembly and is conducive to the recycling of the retaining ring. 2. The first power component drives the first detection cylinder to rotate, and the first detection cylinder drives the second detection cylinder to screw into the threaded base. By adjusting the number of rotations of the first detection cylinder, the variable diameter part of the second detection cylinder abuts against different numbers of retaining rings, thereby changing the clamping area between the pipe and the retaining rings. This effectively demonstrates the influence of the clamping area between the retaining rings and the pipe on the pipe connection performance. Compared with existing equipment that requires replacing different hollow bolts to test the connection performance of different pipes, this device effectively improves the testing efficiency. 3. The second power component drives the second detection cylinder to rotate. The second detection cylinder, through the combined action of the driving wheel, the first bevel gear, the second bevel gear, the third bevel gear, and the driven wheel, drives the detection ring to rotate, and the rotation direction of the detection ring is opposite to the rotation direction of the second detection cylinder. The first clamping block of the second detection cylinder and the second clamping ring on the detection ring respectively abut against the abutting parts of the two retaining rings in each group of retaining rings, thereby changing the clamping length between each group of retaining rings and the pipeline. This effectively reflects the influence of the clamping length between the retaining ring and the pipeline on the pipeline connection performance, effectively improving the detection efficiency, and thus quickly identifying hollow bolts suitable for pipelines of different specifications. 4. Air is introduced into the fixed ring through the air tube. If there is a gap between the pipe and the retaining ring, the gas is detected to be discharged from the gap between the pipe and the retaining ring, the fixing groove, and the vent hole. This allows the sealing performance of the pipe under different retaining ring combinations to be identified. The clamping strength of the pipe under different retaining ring combinations is identified by pulling the component. This allows the clamping area and clamping length between the retaining ring and the pipe to be detected when different pipes have the best performance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the hollow bolt in the embodiments of this application; Figure 2 This is a schematic diagram illustrating the overall structure of the processing and testing device in the embodiments of this application; Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle; Figure 5 This is a partial structural diagram used to illustrate the first and second detection components; Figure 6 yes Figure 5 A diagram from another perspective; Figure 7 This is a schematic diagram of the hollow bolts and retaining rings in the processing and testing device.

[0030] Reference numerals: 1. Hollow bolt; 11. Threaded base; 12. Sealing ring; 13. Retaining ring; 14. Retaining groove; 15. Snap ring; 151. Connecting part; 152. Snap-fitting part; 153. Abutting part; 2. Machine body; 21. Mounting plate; 22. Clamping plate; 23. Controller; 3. First detection component; 31. First detection cylinder; 32. First gear ring; 33. First gear; 34. First power component; 4. Second detection assembly; 41. Second detection cylinder; 411. First fixing part; 412. Variable diameter part; 413. Second fixing part; 42. Second gear ring; 43. Second gear; 44. Second power component; 45. First clamping block; 46. Detection ring; 47. Second clamping block; 48. Synchronizing component; 481. Driving wheel; 482. Third gear ring; 483. First bevel gear; 484. First transmission rod; 485. Second bevel gear; 486. Third bevel gear; 487. Second transmission rod; 488. Driven wheel; 489. Fourth gear ring; 491. Limiting ring; 492. Limiting groove; 5. Sealing assembly; 51. Vent hole; 52. Air tube; 6. Pulling assembly; 61. Hydraulic cylinder; 62. Clamping column head; 63. Tension sensor. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0032] This application discloses a reusable, detachable type A quick-connect hollow bolt and its processing and testing device. (Refer to...) Figure 1 and Figure 7 The reusable and removable type A quick-connect hollow bolt includes a threaded base 11, a sealing ring 12 fitted on the threaded base 11, a fixing ring 13 fitted on the threaded base 11, a connecting ring on the threaded base 11, a groove in the fixing ring 13 that is adapted to be inserted into the connecting ring, and multiple sets of fixing grooves 14 on the fixing ring 13. A retaining ring 15 is inserted into the fixing groove 14. The retaining ring 15 includes a connecting part 151, and retaining parts 152 integrally formed on both sides of the connecting part 151. An abutment part 153 is integrally formed at the end of the retaining part 152 away from the connecting part 151. The diameter of the fixing ring 13 is smaller than the diameter of the threaded base 11. When the retaining ring 15 is installed in the fixing groove 14 in the fixing ring 13, the abutment part 153 extends out of the outer peripheral wall of the fixing ring 13, and the retaining part 152 extends out of the inner peripheral wall of the fixing ring 13. When connecting to a pipe, the retaining part 152 moves and abuts against the outer peripheral wall of the pipe.

[0033] When technicians connect the pipes, they first insert one section of pipe into the inner hole of the hollow bolt 1, then slip the reducing nut from the other section of pipe onto the hollow bolt 1. Twisting the reducing nut causes the retaining ring 15 to fully extend into the fixing groove 14 and simultaneously abut against the abutment portion 153 on the retaining ring 15. The reducing nut deforms the retaining ring 15 through the abutment portion 153, and the retaining portion 152 of the retaining ring 15 applies radial pressure to the pipe, thus securing it in place. When technicians disassemble the pipes, they first loosen the reducing nut. The nut, with its abutting part 153 extending out of the fixing groove 14 under the action of elastic force, and then by striking the abutting part 153 of the retaining ring 15 with a tool, the connecting part 151 extends out of the fixing groove 14. Then, by using pliers or other tools to clamp the connecting part 151 of the retaining ring 15, the retaining ring 15 is removed from the fixing ring 13, thus completing the disassembly. Compared with the prior art which requires destroying the fixing ring 13 and the threaded base 11 to disassemble the pipe, this hollow bolt 1 can achieve quick disassembly and the retaining ring 15 can be reused, resulting in low disassembly and maintenance costs.

[0034] Reference Figure 1-5 A reusable, detachable, type A quick-connect fitting hollow bolt processing and testing device includes a body 2, a clamping plate 22 on the body 2, a rotating fixed plate on the clamping plate 22, multiple clamping grooves evenly spaced within the clamping plate 22, multiple clamping blocks slidably disposed on the fixed plate, and sliding grooves on the fixed plate that are slidably adapted to the clamping blocks. Each clamping block corresponds one-to-one with a clamping groove. A rotating column is fixedly connected to each clamping block, and the rotating column is slidably disposed within the clamping groove. When the fixed plate is rotated, the clamping block slides out of the sliding groove and movably abuts against a threaded base 11. A second fixed plate with hollow threads is fixedly mounted on the clamping plate 22. A slide rail is provided on the body 2, and a mounting plate 21 is slidably disposed on the slide rail. The mounting plate 21 is provided with a device for detecting the clamping of 15 sets of pipe clamping rings. The first detection component 3 is equipped with a strength-affecting first detection component 3, a second detection component 4 for detecting the effect of the snap-fit ​​length of the snap-fit ​​ring 15 on the snap-fit ​​strength of the pipe, a pull-out component 6 for detecting the tensile strength between the hollow bolt 1 and the pipe, and a sealing component 5 for detecting the sealing performance between the hollow bolt 1 and the pipe. The first detection component 3 includes a first detection cylinder 31 rotatably mounted on the mounting plate 21. The first detection cylinder 31 is provided with a thread that is threadedly adapted to the threaded base 11. A first toothed ring 32 is coaxially fixed to the outer peripheral wall of the first detection cylinder 31. A first power component 34 is fixed to the mounting plate 21. The first power component 34 can be a servo motor. A first gear 33 is coaxially mounted on the output end of the servo motor. A coupling is provided at the connection between the servo motor and the first gear 33.

[0035] Since the clamping strength between the clamping ring 15 and the pipe is closely related to the contact area between the clamping ring 15 and the pipe, and the clamping length between the clamping ring 15 and the pipe, excessive clamping strength during the clamping process can easily lead to pipe deformation, resulting in gaps at the pipe connection and affecting the sealing performance of the pipe connection. Conversely, weak clamping strength can easily lead to the pipe connection falling off, affecting the long-term use of the pipe. Since the clamping strength of the pipe is closely related to the contact area between the clamping ring 15 and the pipe, and the clamping length between the clamping ring 15 and the pipe, it is necessary to test the length of the clamping ring 15 and the number of clamping rings 15 to achieve the optimal performance at the pipe connection.

[0036] The technician first fixes the hollow bolt 1 onto the clamping plate 22, then inserts the pipe into the hollow bolt 1, and then starts the first power component 34. The first power component 34 drives the first detection cylinder 31 to rotate through the first toothed ring 32. While rotating, the first detection cylinder 31 drives the entire mounting plate 21 to move on the slide rail. By controlling the number of rotations of the first detection cylinder 31, the number of sets of clamping rings 15 that contact the pipe is adjusted. The more sets of clamping rings 15 that abut against the pipe, the larger the contact area between the clamping rings 15 and the pipe.

[0037] Reference Figure 4-6 The second detection component 4 includes a second detection cylinder 41 rotatably mounted on the mounting plate 21. The second detection cylinder 41 sequentially includes a first fixing part 411, a variable diameter part 412, and a second fixing part 413. The first fixing part 411 extends into the first detection cylinder 31. The inner diameter of the variable diameter part 412 gradually decreases in the direction away from the first detection cylinder 31, and the transition is smooth. The inclined side of the variable diameter part 412 is movably abutted against the abutting part 153 of the retaining ring 15. The inner peripheral wall of the second fixing part 413 is movably abutted against the abutting part 153. The aperture of the first fixing part 411 is larger than the aperture of the second fixing part 413. A limit ring 491 is provided on the first detection cylinder 31, and a limit groove 492 adapted to the limit ring 491 is provided on the outer peripheral wall of the second detection cylinder 41. The second detection cylinder 41 extends into the first detection cylinder 31. A detection ring 46 is rotatably mounted on one end of the detection cylinder 31. A first abutting block 45 is fixedly connected to the outer peripheral wall of the second detection cylinder 41, and a second abutting block 47 is fixedly connected to the detection ring 46. The first abutting block 45 and the second abutting block 47 are respectively movably abutted against the abutting part 153 on each of the retaining rings 15 in each group of retaining rings 15. A second toothed ring 42 is integrally formed on the outer peripheral wall of the second detection cylinder 41. A second power component 44 is mounted on the mounting plate 21. A second gear 43 that meshes with the second toothed ring 42 is provided at the output end of the second power component 44. The second power component 44 can also be a servo motor. A coupling is also provided at the connection between the servo motor and the second gear 43. The servo motor is electrically connected to the controller 23. The second detection assembly 4 also includes a synchronizing component 48 that drives the detection ring 46 to rotate.

[0038] When the first detection cylinder 31 abuts against the outermost thread of the threaded base 11, under the action of the limiting ring 491 of the first detection cylinder 31 and the limiting groove 492 of the second detection cylinder 41, the first detection cylinder 31 drives the second detection cylinder 41 to move towards the threaded base 11. At the same time, the coupling controls the second detection cylinder 41 to remain stationary. When the hollow bolt 1 is fixed, the abutting part 153 on the retaining ring 15 corresponds to the first abutting block 45 and the second abutting block 47 on the detection ring 46 inside the second detection cylinder 41. The first detection cylinder 31 drives the second detection cylinder 41 to move, and the first abutting block 45 and the second abutting block 47... 47 is respectively pressed against the abutment part 153 on the two retaining rings 15 in each group. At this time, the position of the second detection cylinder 41 is the initial position. Then, the second power component 44 is started and the first power component 34 is turned off. The second power component 44 rotates the second detection cylinder 41 through the second gear 43 and the second toothed ring 42. The second detection cylinder 41 drives the detection ring 46 to rotate through the synchronizing component 48. The rotation direction of the detection ring 46 is opposite to the rotation direction of the second detection cylinder 41. The second detection cylinder 41 and the detection ring 46 drive the two retaining rings 15 in each group of retaining rings 15 to rotate, thereby changing the abutment length between each group of retaining rings 15 and the pipeline.

[0039] After the second detection cylinder 41 adjusts the clamping length of each set of retaining rings 15 with the pipeline, the second power component 44 drives the second detection cylinder 41 to return to its initial position and align it with the abutment part 153 on the next set of retaining rings 15. The first power component 34 is then activated again, and the first power component 34 drives the first detection cylinder 31 and the second detection cylinder 41 to screw into the threaded base 11. The variable diameter part 412 of the second detection cylinder 41 abuts against the abutment part 153 of the retaining ring 15 and applies radial pressure to the retaining ring 15, causing the retaining ring 15 to clamp the pipeline. When the first detection cylinder 31 rotates again, the clamped retaining ring 15 abuts against the second fixing part 413 of the second detection cylinder 41.

[0040] Reference Figure 4-5 The synchronizing element 48 includes a drive wheel 481 rotatably disposed inside the second detection cylinder 41, a third toothed ring 482 integrally formed on the inner peripheral wall of the first detection cylinder 31 that meshes with the drive wheel 481, a first transmission rod 484 coaxially fixed to the drive wheel 481, a first bevel gear 483 coaxially fixed to the end of the first transmission rod 484 away from the drive wheel 481, a third bevel gear 486 rotatably disposed inside the second detection cylinder 41 that meshes with the first bevel gear 483, a second bevel gear 485 rotatably disposed inside the second detection cylinder 41 that meshes with the third bevel gear 486, a second transmission rod 487 coaxially fixed to the second bevel gear 485, a driven wheel 488 coaxially fixed to the end of the second transmission rod 487 away from the second bevel gear 485, and a fourth toothed ring 489 integrally formed on the inner peripheral wall of the detection ring 46 that meshes with the driven wheel 488.

[0041] When the second detection cylinder 41 rotates, the driving wheel 481 inside the second detection cylinder 41 meshes with the third toothed ring 482 of the first detection cylinder 31. The driving wheel 481 drives the third bevel gear 486 to rotate through the first bevel gear 483 and the first transmission rod 484. The third bevel gear 486 drives the second bevel gear 485, the second transmission rod 487 and the driven wheel 488 to rotate. The driven wheel 488 drives the detection ring 46 to rotate through the fourth toothed ring 489. Thus, the rotation direction of the detection ring 46 is opposite to the rotation direction of the second detection cylinder 41. Since the second detection cylinder 41 drives the detection ring 46 to rotate synchronously, and the two retaining rings 15 in each set of retaining rings 15 rotate at the same angle, by changing the tooth ratio between the driving wheel 481 and the driven wheel 488, the rotation angle of the second detection cylinder 41 and the rotation angle of the detection ring 46 are the same.

[0042] Furthermore, when technicians adjust the clamping performance of different sets of retaining rings 15 on the pipeline, they first need to drive the second detection cylinder 41 to rotate through the second power component 44. The first power component 34 is not started, the first detection cylinder 31 is stationary, and the first detection cylinder 31 and the second detection cylinder 41 rotate relative to each other. Only then can the third toothed ring 482 in the first detection cylinder 31 drive the drive wheel 481 in the second detection cylinder 41 to rotate. After the adjustment is completed, the first power component 34 and the second power component 44 need to be started at the same time, and the first detection cylinder 31 and the second detection cylinder 41 need to rotate in the same direction and at the same speed, so that the different sets of retaining rings 15 clamp the pipeline. If the first detection cylinder 31 and the second detection cylinder 41 do not rotate in the same direction and at the same speed, when the pipeline is tested again, the position of the second detection cylinder 41 needs to be readjusted so that the first clamping block 45 and the second clamping block 47 abut against the clamping part 153 of each set of retaining rings 15.

[0043] Reference Figure 2 , Figure 3 and Figure 5The pulling assembly 6 includes a hydraulic cylinder 61 mounted on the machine body 2. A tension sensor 63 is threadedly connected to the output end of the hydraulic cylinder 61. A clamping head 62 is threadedly connected to the tension sensor 63, and a connecting nut (a variable diameter nut) is mounted on the clamping head 62. The sealing assembly 5 includes a sliding plate slidably mounted on the machine body 2. An air pipe 52 is mounted on the sliding plate. One end of the air pipe 52 is connected to a fixing ring 13, and a rubber sealing ring 12 is mounted on the end of the air pipe 52. An electric telescopic rod is mounted on the machine body 2, and the telescopic end of the electric telescopic rod is fixed to the sliding plate. The other end of the air pipe 52 is equipped with a charging port. The gas box has a vent hole 51 on the outer peripheral wall of the first detection cylinder 31. The gas box is connected to an air compressor, gas cylinder, etc., and the detection gas is filled into the gas box through a pressure relief valve. A pressure sensor or pressure gauge is installed in the gas box. The end of the first detection cylinder 31 near the hollow bolt 1 abuts against the sealing ring 12. A sealing ring 12 is also provided at the connection between the second detection cylinder 41 and the first detection cylinder 31. A controller 23 is installed on the body 2. The controller 23 can be a programmable logic controller 23, an embedded controller 23, an industrial control computer, etc. The tension sensor 63 and the pressure sensor are electrically connected to the controller 23.

[0044] After the first detection cylinder 31 and the second detection cylinder 41 are adjusted, the air compressor or gas cylinder fills the inflation box with detection gas, which can be nitrogen, air, etc. If there is a gap between the retaining ring 15 and the pipeline, the detection gas in the inflation box is introduced into the hollow bolt 1 through the gas pipe 52. Since the fixing ring 13 has a fixing groove 14, the gas flows out through the gap between the retaining ring 15 and the pipeline, the fixing groove 14, and the vent hole 51 on the first detection cylinder 31, and the pressure in the inflation box changes. The sealing performance between the retaining ring 15 and the pipeline can be reflected by identifying the pressure change data of the pressure sensor or pressure gauge over a certain period of time. If there is no gap between the retaining ring 15 and the pipeline, since the end of the pipeline away from the hollow bolt 1 is connected by the butt joint head and the connecting nut, the end of the pipeline away from the hollow bolt 1 is in a sealed state, and the pressure in the inflation box does not change.

[0045] When technicians install the pipe, they first put the connecting nut on the pipe, then insert the pipe into the connecting post, and twist the connecting nut to fix the pipe to the connecting post. After the sealing component 5 completes the test, the hydraulic cylinder 61 is started. The hydraulic cylinder 61 pulls the pipe, and the tension sensor 63 identifies the clamping strength between the retaining ring 15 and the pipe. By adjusting the number of retaining rings 15 in contact with the pipe and adjusting the clamping length of each retaining ring 15 to the pipe, and by using the tension sensor 63 and the pressure sensor to reflect the optimal performance of the pipe connection, the thickness and length of the retaining ring 15 on the fixing ring 13 can be adjusted according to the pipe with different materials and wall thicknesses.

[0046] The implementation principle of the reusable disassembly and assembly type A quick-connect hollow bolt 1 and its processing and testing device in this application embodiment is as follows: When the technician disassembles the pipeline, he first separates the reducing nut from the hollow bolt 1. The retaining ring 15 extends out of the fixing ring 13 under the action of elastic force. The technician clamps the connecting part 151 with a tool and then pulls the retaining ring 15 out of the fixing groove 14 of the fixing ring 13 to complete the pipeline disassembly. Compared with the prior art, which requires the fixing ring 13 to be destroyed before the pipeline can be disassembled, the hollow bolt 1 effectively improves the disassembly efficiency and reduces the damage of the hollow bolt 1, which is conducive to the reuse of the hollow bolt 1.

[0047] The first power component 34 drives the first detection cylinder 31 to rotate. By adjusting the number of rotations of the first detection cylinder 31, the number of sets of pipes abutting against the retaining rings 15 is adjusted, thus changing the contact area between the pipes and the retaining rings 15. When the first detection cylinder 31 is screwed into the hollow bolt 1, the limiting ring 491 and the limiting groove 492 drive the second detection cylinder 41 to move simultaneously. The second detection cylinder 41, driven by the second power component 44, rotates. The first abutting block 45 on the second detection cylinder 41 abuts against the abutting part 153 on one of the retaining rings 15 in each set. During the rotation of the second detection cylinder 41... In the process, the driving wheel 481 meshes with the third toothed ring 482 on the first detection cylinder 31, and drives the driven wheel 488 to rotate through the first bevel gear 483, the second bevel gear 485 and the third bevel gear 486. The driven wheel 488 meshes with the fourth toothed ring 489 on the detection ring 46, thereby driving the detection ring 46 to rotate, and making the rotation direction of the detection ring 46 opposite to the rotation direction of the second detection cylinder 41. The second clamping block 47 on the detection ring 46 abuts against the abutting part 153 of another retaining ring 15 on each set of retaining rings 15, thereby changing the abutting length between each set of retaining rings 15 and the pipeline.

[0048] If there is a gap between the pipe and the hollow bolt 1 during the compression of the pipe by the retaining ring 15, the detection gas is discharged through the gap between the hollow bolt 1 and the pipe, the fixing groove 14, and the vent 51 on the first detection cylinder 31. By identifying the pressure sensor and tension sensor 63 in the inflation box, the number of clamping sets between the retaining ring 15 and the pipe and the contact length of the retaining ring 15 when the pipe performs optimally are determined. Compared with the prior art, which requires multiple replacements of different hollow bolts to test the connection performance of pipes of different specifications, this device effectively improves the detection efficiency and matching accuracy.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reusable, detachable type A quick-connect coupling hollow bolt processing and testing device, characterized in that: The device includes a body (2), on which a clamping plate (22) is provided, and a mounting plate (21) is slidably provided on the body (2). The mounting plate (21) is provided with a first detection component (3) for detecting the effect of the number of sets of the retaining rings (15) on the pipe clamping strength, a second detection component (4) for detecting the effect of the length of the retaining rings (15) on the pipe clamping strength, a pull-out component (6) for testing the tensile strength between the pipe and the hollow bolt (1), and a sealing component (5) for detecting the sealing between the pipe and the hollow bolt (1).

2. The reusable disassembly and assembly type A quick-connect connector hollow bolt processing and testing device according to claim 1, characterized in that: The first detection component (3) includes a first detection cylinder (31) rotatably mounted on the body (2), the first detection cylinder (31) being threadedly connected to the threaded base (11), a first toothed ring (32) being coaxially fixed on the outer peripheral wall of the first detection cylinder (31), a first gear (33) being rotatably mounted on the body (2) and meshing with the first toothed ring (32), and a first power component (34) being mounted on the body (2) to drive the gear to rotate.

3. The reusable disassembly and assembly type A quick-connect hollow bolt processing and testing device according to claim 1, characterized in that: The second detection component (4) includes a second detection cylinder (41) rotatably mounted on the body (2), a first abutting block (45) fixedly connected to the second detection cylinder (41), a detection ring (46) rotatably mounted on one end of the second detection cylinder (41), a second abutting block (47) fixedly connected to the outer peripheral wall of the detection ring (46), the first abutting block (45) and the second abutting block (47) respectively movably fitting with the abutting part (153) on each set of retaining rings (15), a second toothed ring (42) fixedly connected to the outer peripheral wall of the second detection cylinder (41), a second gear (43) rotatably mounted on the body (2) meshing with the second toothed ring (42), a second power component (44) driving the second gear (43) to rotate on the body (2), and a synchronizing component (48) driving the detection ring (46) to rotate.

4. The reusable disassembly and assembly type A quick-connect coupling hollow bolt processing and testing device according to claim 3, characterized in that: The synchronizing element (48) includes a drive wheel (481) rotatably disposed within the second detection cylinder (41), a first transmission rod (484) coaxially fixed to the end face of the drive wheel (481), a first bevel gear (483) fixed to the end of the first transmission rod (484) away from the drive wheel (481), and a driven wheel (488) rotatably disposed within the detection ring (46), a second transmission rod (487) coaxially fixed to the driven wheel (488), the second transmission rod (487) being located away from the drive wheel (481). A second bevel gear (485) is fixedly connected to one end of the driven wheel (488). A third bevel gear (486) that meshes with the first bevel gear (483) / the second bevel gear (485) is rotatably disposed inside the second detection cylinder (41). A third toothed ring (482) that meshes with the driving wheel (481) is coaxially fixedly connected to the inner peripheral wall of the first detection cylinder (31). A fourth toothed ring (489) that meshes with the driven wheel (488) is coaxially fixedly connected to the inner peripheral wall of the detection ring (46).

5. The reusable disassembly and assembly type A quick-connect connector hollow bolt processing and testing device according to claim 3, characterized in that: The second detection cylinder (41) is rotatably mounted on the first detection cylinder (31). A limiting ring (491) is coaxially fixed on the outer peripheral wall of the second detection cylinder (41). A limiting groove (492) that is movably adapted to the limiting ring (491) is provided on the inner peripheral wall of the first detection cylinder (31).

6. The reusable disassembly and assembly type A quick-connect coupling hollow bolt processing and testing device according to claim 3, characterized in that: The second detection cylinder (41) includes a first fixing part (411), a variable diameter part (412), and a second fixing part (413). The inner diameter of the variable diameter part (412) gradually decreases in the direction away from the first detection cylinder (31) and the transition is smooth. The inclined side of the variable diameter part (412) is movably pressed against the abutting part (153). The inner peripheral wall of the second fixing part (413) is movably pressed against the abutting part. The aperture of the first fixing part (411) is larger than the aperture of the second fixing part (413).

7. The reusable disassembly and assembly type A quick-connect coupling hollow bolt processing and testing device according to claim 3, characterized in that: The sealing assembly (5) includes a vent (51) on the first detection cylinder (31), and a gas tube (52) is connected to one end of the second detection cylinder (41) away from the first detection cylinder (31). The gas tube (52) is tightly sealed against the fixing ring (13), and detection gas flows through the gas tube (52).

8. The reusable disassembly and assembly type A quick-connect coupling hollow bolt processing and testing device according to claim 1, characterized in that: The pulling assembly (6) includes a hydraulic cylinder (61) mounted on the machine body (2). A clamping head (62) is fixedly connected to the output end of the hydraulic cylinder (61). A tension sensor (63) is provided at the connection between the hydraulic cylinder (61) and the clamping head (62). A controller (23) is provided on the machine body (2). The tension sensor (63) is electrically connected to the controller (23).

9. A reusable, removable type A quick-connect hollow bolt, applicable to the hollow bolts described in claims 1-8, wherein the hollow bolt (1) includes a threaded base (11), a sealing ring (12) is fitted on the threaded base (11), and a retaining ring (13) is snapped onto the top of the threaded base (11), characterized in that: The fixing ring (13) has multiple sets of fixing grooves (14) spaced apart. The fixing ring (13) is provided with retaining rings (15) that are adapted to the fixing grooves (14). Each set of retaining rings (15) includes two retaining rings (15). Each retaining ring (15) includes a connecting part (151), a retaining part (152) located on both sides of the connecting part (151), and an abutting part (153) located at the end of the retaining part (152) far from the connecting part (151). When connecting the pipe, the snap-fit ​​part (152) is in movable contact with the outer peripheral wall of the pipe, and the abutment part (153) is in movable contact with the inner peripheral wall of the reducing nut.

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