Multi-functional pipe wrench

Abstract

The present invention discloses a multi-functional pipe wrench, which relates to the technical field of pipe wrenches. It includes a fixed pliers handle, and a fixed pliers head is fixedly installed at the end of the fixed pliers handle. An adjustable bolt is rotatably installed inside the movable pliers groove opened on the fixed pliers head, and a movable pliers head is movably installed on the upper end surface of the fixed pliers head; a fastening assembly is arranged on the fixed pliers head and the movable pliers head, and a driving assembly is arranged on the fixed pliers handle. A positioning assembly is arranged on the driving assembly. Through the cooperation of the fastening assembly and the positioning assembly, the clamping force between the pipe wrench and the pipeline is enhanced. The fastening assembly includes a positioning wheel rotatably installed on the movable pliers head, and a fastening chain is fixedly connected to the positioning wheel. Through the combined use of the fastening assembly, the driving assembly and the positioning assembly, the present invention ensures the fastening force between the pipe wrench and the pipeline, realizes a more uniform and stable fastening effect on the pipeline, and improves work efficiency and safety at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe wrenches, and specifically to a multi-functional pipe wrench. Background Art

[0002] A pipe wrench is a common tool mainly used for clamping and rotating pipes or other circular objects, usually used in maintenance work in industries such as plumbing and air conditioning. Its design enables it to provide a large clamping force, especially suitable for fixing or disassembling pipes. The jaws of a pipe wrench are usually adjustable to accommodate pipes of different diameters.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN 211073364U discloses a pipe wrench. Through the coordinated use of a turntable, gears, and a movable jaw body, etc., the turntable drives the gear to rotate through a rotating shaft, and the gear drives the movable jaw body to move inside the through groove through meshing. Then, the pipe wrench is used to clamp an object, and then the push block is pushed. The push block drives the T-shaped block to move through the clamping rod, so that one end of the T-shaped block is placed between the gaps of the gears to limit the rotation of the gears and prevent them from rotating. At the same time, a trapezoidal block fixedly installed at one end of the clamping rod moves from the first groove to the second groove to fix the T-shaped block. Then, the pipe wrench can be used to quickly move the movable jaw body, solving the problem that the moving speed of the movable jaw body inside the existing pipe wrench is slow during use, reducing the work efficiency.

[0004] Existing pipe wrenches are generally used to clamp and rotate steel pipe workpieces, and use the pipe wrench to clamp the pipe and rotate it to complete the connection. Its working principle is to convert the clamping force into torque, and the greater the force in the twisting direction, the tighter it clamps. In the above-described solution, the rapid movement of the movable jaw body in the pipe wrench is achieved through the cooperation of a turntable, gears, and a movable jaw body, etc. However, during this process, only the positioning of the pipe wrench on the pipe body is accelerated. When the jaw body clamps, only the movable jaw body, the fixed jaw body, and the pipe body surface come into contact, and no additional tightening force is applied to enhance the tightening force between the pipe wrench and the pipe body. At the same time, during the process of tilting and pressing down the handle of the pipe wrench to rotate, the pipe wrench cannot continuously apply a tightening force to the pipe body, which may cause loosening or sliding between the pipe wrench and the pipe body when a certain force is applied, especially when the pipe surface is relatively smooth, which will greatly reduce the use effect of the pipe wrench. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a multi-functional pipe wrench, which solves the problems mentioned in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] Multi-functional pipe wrench, including a fixed pliers handle, a fixed pliers head is fixedly installed at the end of the fixed pliers handle, a movable pliers groove is opened on the fixed pliers head, an adjusting bolt is rotatably installed inside the movable pliers groove, and a movable pliers head is movably installed on the upper end surface of the fixed pliers head;

[0008] A fastening component is arranged on the fixed pliers head and the movable pliers head, a driving component is arranged on the fixed pliers handle, and a positioning component is arranged on the driving component. Through the cooperation of the fastening component and the positioning component, the clamping force between the pipe wrench and the pipeline is enhanced.

[0009] Preferably, the fastening component includes a positioning wheel rotatably installed on the movable pliers head, a fastening chain is fixedly connected to the positioning wheel, symmetrically arranged guide wheels are rotatably installed on the side end surface of the movable pliers head, and a conduction wheel is rotatably installed on the side end surface of the movable pliers head and below the guide wheels.

[0010] Preferably, a driving groove is opened inside the fixed pliers head, a driving shaft is rotatably installed inside the driving groove, both ends of the driving shaft extend to the outside of the fixed pliers head and are fixedly installed with driving disks, a fixed wheel is fixedly installed on the driving disk, an L-shaped plate is fixedly installed at the tail end of the movable pliers head, a transverse tooth block is fixedly installed on the lower end surface of the L-shaped plate, and a ring tooth block is fixedly installed on the driving shaft.

[0011] Preferably, one end of the fastening chain away from the positioning wheel sequentially contacts the two guide wheels, the conduction wheel and is fixedly connected to the fixed wheel, the driving shaft is rotatably installed with the fixed pliers head, and the transverse tooth block meshes with the ring tooth block.

[0012] Preferably, the driving component includes a sliding groove opened on the fixed pliers handle, a sliding block is slidably installed inside the sliding groove, a sliding plate is fixedly installed at the top end of the sliding block, and one end of the sliding block is fixedly connected with a tension spring.

[0013] Preferably, a limiting groove is opened on the inner side surface of the sliding groove, a limiting block is fixedly installed on the side end surface of the sliding block and is used in cooperation with the limiting groove, a cylindrical groove is opened inside the sliding groove, and one end of the tension spring away from the sliding block is fixedly connected inside the cylindrical groove.

[0014] Preferably, the positioning component includes an air storage cylinder fixedly installed inside the fixed pliers handle, a push rod is slidably installed on the air storage cylinder, a piston is fixedly installed at one end of the push rod, an air outlet pipe of the air storage cylinder is fixedly communicated with an outlet pipe, one end of the outlet pipe away from the air storage cylinder is fixedly communicated with a bifurcated pipe, and a push air bag is fixedly installed at one end of the bifurcated pipe away from the outlet pipe.

[0015] Preferably, a pushing groove is formed inside the fixed jaw head. An installation block is slidably installed inside the pushing groove. Anti-slip teeth are fixedly installed on both the installation block and the movable jaw head. A positioning block is fixedly installed on the side end face of the installation block. A spring is fixedly connected to the positioning block. A positioning groove for cooperating with the positioning block is formed inside the pushing groove. A storage groove is formed at the end of the fixed jaw head.

[0016] An extrusion groove is formed at the end of the fixed jaw head and on one side of the storage groove. An extrusion airbag is arranged inside the extrusion groove. A connecting pipe is fixedly communicated with the extrusion airbag.

[0017] Preferably, one end of the bifurcated pipe away from the air outlet pipe extends into the positioning groove. The pushing airbag is inside the positioning groove. The storage groove is communicated with the positioning groove. The anti-slip teeth are inside the storage groove. The end of the connecting pipe away from the extrusion airbag is fixedly communicated with the air outlet pipe. The other end of the push rod extends into the sliding groove and is fixedly connected to the sliding block.

[0018] The present invention provides a multifunctional pipe wrench. Compared with the prior art, the following beneficial effects are achieved:

[0019] 1. In the present invention, when the movable jaw head moves horizontally towards the fixed jaw head, the movable jaw head will synchronously drive the L-shaped plate to move. By using the cooperation between the transverse tooth block on the L-shaped plate and the ring tooth block on the drive shaft, the ring tooth block will drive the drive disk to rotate counterclockwise through the drive shaft. The fastening chain in the horizontal state will be inclined at an angle. The inclined fastening chain is used to fasten and fit on the pipeline, completing the fastening of the pipeline, which can ensure that the jaw head fixes the pipeline more evenly, helps to prevent the pipe wrench from sliding or loosening during operation, and improves work safety.

[0020] 2. In the present invention, when the fixed pliers handle is pressed downward and inclined, the sliding plate is pushed by the palm. The sliding block on the sliding plate will drive the piston on the push rod to move inside the air storage cylinder. The gas in the air storage cylinder will enter the bifurcated pipe through the air outlet pipe. Part of the gas in the bifurcated pipe will enter the pushing airbag. The pushing airbag will bulge to push the installation block to slide inside the pushing groove. The anti-slip teeth on the installation block will protrude from the storage groove, effectively enhancing the friction between the fixed jaw head and the pipeline and effectively enhancing the fastening force between the pipeline and the jaw head.

[0021] 3. In the present invention, the other part of the gas in the bifurcated pipe will enter the extrusion airbag through the connecting pipe. The extrusion airbag will expand by the filling of the gas. After expansion, the extrusion airbag will closely fit on the pipeline surface, effectively increasing the pressure between the pipeline and the fixed jaw head, further enhancing the fastening force, and ensuring that there is no looseness between the jaw head and the pipeline.

[0022] 4. Through the combined use of the fastening component, the driving component and the positioning component, the present invention ensures the fastening force between the pipe wrench and the pipeline, realizes a more uniform and stable fastening effect on the pipeline, and improves the work efficiency and safety at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0024] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0025] Figure 3 is a schematic diagram of the internal structure of the present invention;

[0026] Figure 4 is Figure 3 an enlarged view of part A in

[0027] Figure 5 is a schematic diagram of the structure of the movable jaw head in the present invention;

[0028] Figure 6 is a schematic diagram of the structure of the positioning component in the present invention;

[0029] Figure 7 is a partial cross-sectional view of the fixed jaw head in the present invention;

[0030] Figure 8 is a side cross-sectional view of the fixed jaw head in the present invention.

[0031] In the figure: 1. Fixed pliers handle; 2. Fixed jaw head; 3. Movable jaw groove; 4. Adjusting bolt; 5. Movable jaw head; 6. Positioning wheel; 7. Fastening chain; 8. Guide wheel; 9. Conduction wheel; 10. Driving groove; 11. Driving shaft; 12. Driving disc; 13. Fixed wheel; 14. L-shaped plate; 15. Transverse tooth block; 16. Ring tooth block; 17. Sliding groove; 18. Sliding block; 19. Sliding plate; 20. Tension spring; 21. Limiting groove; 22. Limiting block; 23. Cylindrical groove; 24. Air storage cylinder; 25. Push rod; 26. Air outlet pipe; 27. Branch pipe; 28. Push airbag; 29. Push groove; 30. Installation block; 31. Anti-slip teeth; 32. Positioning block; 33. Spring; 34. Positioning groove; 35. Storage groove; 36. Extrusion groove; 37. Extrusion airbag; 38. Connecting pipe. DETAILED DESCRIPTION OF THE INVENTION

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-8 , the present invention is a multi-functional pipe wrench, which includes a fixed pliers handle 1. A fixed pliers head 2 is fixedly installed at the end of the fixed pliers handle 1. An adjustable bolt 4 is rotatably installed inside an activity pliers groove 3. An activity pliers head 5 is movably installed on the upper end surface of the fixed pliers head 2. A fastening assembly is arranged on the fixed pliers head 2 and the activity pliers head 5. A driving assembly is arranged on the fixed pliers handle 1. A positioning assembly is arranged on the driving assembly. Through the cooperation of the fastening assembly and the positioning assembly, the clamping force between the pipe wrench and the pipeline is enhanced. Among them, the adjustable bolt 4 and the activity pliers head 5 are movably installed. By rotating the adjustable bolt 4, the position of the activity pliers head 5 can be adjusted. Since this technology is well-known to those skilled in the art, no specific description will be given here.

[0034] The fastening assembly includes a positioning wheel 6 rotatably installed on the activity pliers head 5. A fastening chain 7 is fixedly connected to the positioning wheel 6. Symmetrically arranged guide wheels 8 are rotatably installed on the side end surface of the activity pliers head 5. A conduction wheel 9 is rotatably installed on the side end surface of the activity pliers head 5 and below the guide wheels 8. A driving groove 10 is opened inside the fixed pliers head 2. A driving shaft 11 is rotatably installed inside the driving groove 10. Both ends of the driving shaft 11 extend to the outside of the fixed pliers head 2 and are fixedly installed with driving discs 12. A fixed wheel 13 is fixedly installed on the driving disc 12. An L-shaped plate 14 is fixedly installed at the tail end of the activity pliers head 5. A horizontal tooth block 15 is fixedly installed on the lower end surface of the L-shaped plate 14. A ring tooth block 16 is fixedly installed on the driving shaft 11. One end of the fastening chain 7 far from the positioning wheel 6 sequentially contacts the two guide wheels 8, the conduction wheel 9 and is fixedly connected to the fixed wheel 13. The driving shaft 11 and the fixed pliers head 2 are rotatably installed. The horizontal tooth block 15 and the ring tooth block 16 are meshed. Among them, the fastening chain 7 is respectively slidably connected to the guide wheels 8 and the conduction wheel 9.

[0035] In this embodiment, when the activity pliers head 5 moves horizontally towards the fixed pliers head 2, the activity pliers head 5 will synchronously drive the L-shaped plate 14 to move. By using the cooperation between the horizontal tooth block 15 on the L-shaped plate 14 and the ring tooth block 16 on the driving shaft 11, the ring tooth block 16 will drive the driving disc 12 to rotate counterclockwise through the driving shaft 11. The fastening chain 7 in the horizontal state will tilt at an angle. By using the tilted fastening chain 7 to tightly fit on the pipeline, the fastening of the pipeline is completed, which can ensure that the pliers head fixes the pipeline more evenly, helps to prevent the pipe wrench from sliding or loosening during operation, and improves work safety.

[0036] The driving assembly includes a sliding groove 17 formed in the fixed jaw handle 1. A sliding block 18 is slidably installed inside the sliding groove 17. The top end of the sliding block 18 is fixedly installed with a sliding plate 19. One end of the sliding block 18 is fixedly connected with a tension spring 20. A limiting groove 21 is formed in the inner side surface of the sliding groove 17. A limiting block 22 that cooperates with the limiting groove 21 is fixedly installed on the side end surface of the sliding block 18. A cylindrical groove 23 is formed inside the sliding groove 17. The end of the tension spring 20 away from the sliding block 18 is fixedly connected inside the cylindrical groove 23. The positioning assembly includes an air storage cylinder 24 fixedly installed inside the fixed jaw handle 1. A push rod 25 is slidably installed on the air storage cylinder 24. One end of the push rod 25 is fixedly installed with a piston. The air outlet of the air storage cylinder 24 is fixedly communicated with an air outlet pipe 26. The end of the air outlet pipe 26 away from the air storage cylinder 24 is fixedly communicated with a bifurcated pipe 27. A push airbag 28 is fixedly installed at the end of the bifurcated pipe 27 away from the air outlet pipe 26. A push groove 29 is formed inside the fixed jaw head 2. An installation block 30 is slidably installed inside the push groove 29. Anti-slip teeth 31 are fixedly installed on both the installation block 30 and the movable jaw head 5. A positioning block 32 is fixedly installed on the side end surface of the installation block 30. A spring 33 is fixedly connected to the positioning block 32. A positioning groove 34 that cooperates with the positioning block 32 is formed inside the push groove 29. A storage groove 35 is formed at the end of the fixed jaw head 2. The installation block 30 will not shift in position through the cooperation of the positioning block 32 and the positioning groove 34. At the same time, an anti-slip pad can be provided on the surface of the sliding plate 19 according to the needs of the personnel to ensure that when the fixed jaw handle 1 is tilted at an angle, the palm of the personnel can easily move the sliding plate 19. The piston is a technology well-known to those skilled in the art and will not be specifically described here.

[0037] An extrusion groove 36 is formed at the end of the fixed jaw head 2 and on one side of the storage groove 35. An extrusion airbag 37 is arranged inside the extrusion groove 36. A connecting pipe 38 is fixedly communicated with the extrusion airbag 37. The end of the bifurcated pipe 27 away from the air outlet pipe 26 extends into the positioning groove 34. The push airbag 28 is located inside the positioning groove 34. The storage groove 35 is communicated with the positioning groove 34. The anti-slip teeth 31 are located inside the storage groove 35. The end of the connecting pipe 38 away from the extrusion airbag 37 is fixedly communicated with the air outlet pipe 26. The other end of the push rod 25 extends into the sliding groove 17 and is fixedly connected with the sliding block 18.

[0038] ​In this embodiment, when the fixed pliers handle 1 is pressed downward and tilted, the sliding plate 19 is pushed by the palm. The sliding block 18 on the sliding plate 19 will drive the piston on the push rod 25 to move in the air storage cylinder 24. The gas in the air storage cylinder 24 will enter the bifurcated pipe 27 through the air outlet pipe 26. Part of the gas in the bifurcated pipe 27 will enter the push airbag 28. The swelling of the push airbag 28 will push the mounting block 30 to slide in the push groove 29. The anti-slip teeth 31 on the mounting block 30 will protrude from the storage groove 35, effectively enhancing the friction between the fixed pliers head 2 and the pipe, effectively enhancing the fastening force between the pipe and the pliers head. Another part of the gas in the bifurcated pipe 27 will enter the extrusion airbag 37 through the connecting pipe 38. The extrusion airbag 37 will expand by the filling of the gas. After expansion, the extrusion airbag 37 will closely fit on the pipe surface, effectively increasing the pressure between the pipe and the fixed pliers head 2, further enhancing the fastening force, and ensuring that the pliers head and the pipe will not loosen.

[0039] Working principle: When in use, place the pipe between the movable pliers head 5 and the fixed pliers head 2, and then use the adjusting bolt 4 to adjust the position of the movable pliers head 5. When the movable pliers head 5 moves horizontally towards the fixed pliers head 2, the movable pliers head 5 will synchronously drive the L-shaped plate 14 to move. The horizontal tooth block 15 on the L-shaped plate 14 cooperates with the ring tooth block 16 on the drive shaft 11. The ring tooth block 16 will drive the drive disc 12 to rotate counterclockwise through the drive shaft 11. The fastening chain 7 in the horizontal state will tilt at an angle, and the tilted fastening chain 7 will tightly fit on the pipe to complete the fastening of the pipe.

[0040] When the fixed pliers handle 1 is pressed downward and tilted, the sliding plate 19 is pushed by the palm. The sliding block 18 on the sliding plate 19 will drive the piston on the push rod 25 to move in the air storage cylinder 24. The gas in the air storage cylinder 24 will enter the bifurcated pipe 27 through the air outlet pipe 26. Part of the gas in the bifurcated pipe 27 will enter the push airbag 28. The swelling of the push airbag 28 will push the mounting block 30 to slide in the push groove 29. The anti-slip teeth 31 on the mounting block 30 will protrude from the storage groove 35, effectively enhancing the friction between the fixed pliers head 2 and the pipe, effectively enhancing the fastening force between the pipe and the pliers head. Another part of the gas in the bifurcated pipe 27 will enter the extrusion airbag 37 through the connecting pipe 38. The extrusion airbag 37 will expand by the filling of the gas. After expansion, the extrusion airbag 37 will closely fit on the pipe surface, effectively increasing the pressure between the pipe and the fixed pliers head 2, further enhancing the fastening force, and ensuring that the pliers head and the pipe will not loosen.

[0041] After the pipeline is removed or installed, by adjusting the bolt 4, the movable jaw 5 is moved away from the fixed jaw 2. Utilizing the cooperation between the transverse tooth block 15 and the ring tooth block 16, the drive shaft 11 will drive the drive disk 12 to rotate clockwise, and the fastening chain 7 tightly attached to the pipeline will become loose. At the same time, the gases in the extrusion airbag 37 and the pushing airbag 28 will be redrawn into the air storage cylinder 24. The installation block 30 will return to its original position by the elastic force of the spring 33, and the sliding plate 19 will return to its original position through the position of the tension spring 20, so as to facilitate the installation or disassembly of a new pipeline.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A multifunctional pipe clamp, comprising a fixed clamp handle (1), characterized in that: A fixed clamp head (2) is fixedly mounted on the end of the fixed clamp handle (1), a movable clamp groove (3) is formed on the fixed clamp head (2), an adjusting bolt (4) is rotatably mounted inside the movable clamp groove (3), and a movable clamp head (5) is movably mounted on the upper end surface of the fixed clamp head (2); The fixed clamp head (2) and the movable clamp head (5) are provided with a fastening assembly, the fixed clamp handle (1) is provided with a driving assembly, and the driving assembly is provided with a positioning assembly, and the clamping force between the pipe clamp and the pipe is enhanced by the cooperation of the fastening assembly and the positioning assembly; The fastening assembly comprises a positioning wheel (6) rotatably mounted on the movable clamp head (5), a fastening chain (7) being fixedly connected to the positioning wheel (6), a symmetrically arranged guide wheel (8) being rotatably mounted on the side end surface of the movable clamp head (5), a conducting wheel (9) being rotatably mounted on the side end surface of the movable clamp head (5) and below the guide wheel (8), a driving groove (10) being provided inside the fixed clamp head (2), a driving shaft (11) being rotatably mounted inside the driving groove (10), both ends of the driving shaft (11) extending to the outside of the fixed clamp head (2) and being fixedly mounted with a driving disk (12), a fixed wheel (13) being fixedly mounted on the driving disk (12), an L-shaped plate (14) being fixedly mounted on the rear end of the movable clamp head (5), a transverse tooth block (15) being fixedly mounted on the lower end surface of the L-shaped plate (14), and a ring tooth block (16) being fixedly mounted on the driving shaft (11); The driving assembly comprises a sliding groove (17) provided on the fixed clamp handle (1), a sliding block (18) is slidably mounted inside the sliding groove (17), a sliding plate (19) is fixedly mounted on the top of the sliding block (18), one end of the sliding block (18) is fixedly connected to a tension spring (20), a limiting groove (21) is provided on the inner side surface of the sliding groove (17), a limiting block (22) used in conjunction with the limiting groove (21) is fixedly mounted on the side end surface of the sliding block (18), a cylindrical groove (23) is provided inside the sliding groove (17), one end of the tension spring (20) away from the sliding block (18) is fixedly connected to the inside of the cylindrical groove (23), and the positioning assembly comprises an air storage cylinder (24) fixedly mounted inside the fixed clamp handle (1), a push rod (25) is slidably mounted on the air storage cylinder (24), one end of the push rod (25) A piston is fixedly installed, the air outlet of the air storage cylinder (24) is fixedly connected to an air outlet pipe (26), one end of the air outlet pipe (26) away from the air storage cylinder (24) is fixedly connected to a bifurcated pipe (27), one end of the bifurcated pipe (27) away from the air outlet pipe (26) is fixedly installed with a pushing air bag (28), a pushing groove (29) is provided inside the fixed pliers head (2), a mounting block (30) is slidably installed inside the pushing groove (29), anti-slip teeth (31) are fixedly installed on the mounting block (30) and the movable pliers head (5), a positioning block (32) is fixedly installed on the side end surface of the mounting block (30), a spring (33) is fixedly connected to the positioning block (32), a positioning groove (34) used in conjunction with the positioning block (32) is provided inside the pushing groove (29), and a storage groove (35) is provided at the end of the fixed pliers head (2); An extrusion groove (36) is provided at the end of the fixed clamp head (2) and on one side of the storage groove (35), an extrusion air bag (37) is provided inside the extrusion groove (36), and a connecting pipe (38) is fixedly connected to the extrusion air bag (37).

2. The multifunctional pipe wrench according to claim 1, characterized in that: The end of the fastening chain (7) away from the positioning wheel (6) sequentially contacts two guide wheels (8), a conduction wheel (9) and a fixed wheel (13) for fixed connection, the drive shaft (11) is rotatably mounted on the fixed clamp head (2), and the transverse tooth block (15) is meshed with the ring tooth block (16).

3. The multifunctional pipe wrench according to claim 1, characterized in that: One end of the bifurcated tube (27) away from the air outlet pipe (26) extends to the inside of the positioning groove (34), the pushing airbag (28) is located inside the positioning groove (34), the receiving groove (35) is connected to the positioning groove (34), the anti-slip teeth (31) are located inside the receiving groove (35), one end of the connecting tube (38) away from the squeezing airbag (37) is fixedly connected to the air outlet pipe (26), and the other end of the pushing rod (25) extends to the inside of the sliding groove (17) and is fixedly connected to the sliding block (18).

Images