Multifunctional pipe wrench

Abstract

The invention discloses a multifunctional pipe wrench, and relates to the technical field of pipe wrenches. Comprising a fixed plier handle, a fixed plier head is fixedly installed at the end of the fixed plier handle, a movable plier groove is formed in the fixed plier head, an adjusting bolt is rotationally installed in the movable plier groove, and a movable plier head is movably installed on the upper end face of the fixed plier head; a fastening assembly is arranged on the fixed tong head and the movable tong head, a driving assembly is arranged on the fixed tong handle, a positioning assembly is arranged on the driving assembly, clamping force between the pipe tong and a pipeline is enhanced through cooperation of the fastening assembly and the positioning assembly, and the fastening assembly comprises a positioning wheel rotationally installed on the movable tong head. And the positioning wheel is fixedly connected with a fastening chain. According to the pipe wrench, through cooperative use of the fastening assembly, the driving assembly and the positioning assembly, the fastening force between the pipe wrench and a pipeline is ensured, the more uniform and stable fastening effect on the pipeline is achieved, and meanwhile the working efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe clamps, in particular to a multifunctional pipe clamp. Background Art

[0002] A pipe wrench is a common tool that is primarily used to clamp and rotate pipes or other round objects, and is often used for maintenance work in industries such as plumbing and air conditioning. Its design allows it to provide a large holding force, making it particularly suitable for fixing or removing 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 an authorization announcement number of CN 211073364U discloses a pipe clamp. Through the coordinated use of a turntable, a gear and a movable clamp body, the turntable drives the gear to rotate through a rotating shaft, and the gear drives the movable clamp body to move inside the through groove by meshing. Then, the pipe clamp is used to clamp the object, and then the push block is pushed. The push block drives the T-shaped clamp block to move by driving the clamp rod, so that one end of the T-shaped clamp block is placed between the gaps of the gears, and the gear is limited to prevent it from rotating. At the same time, a trapezoidal clamp block fixedly installed at one end of the clamp rod moves from the inside of the first groove to the inside of the second groove, and the T-shaped clamp block is fixed. Then, the pipe clamp can be used, and the movable clamp body can be quickly moved, which solves the problem that the movable clamp body inside the existing pipe clamp moves slowly during use, thereby reducing the work efficiency.

[0004] Existing pipe clamps are generally used to clamp and rotate steel pipe workpieces, and the pipe clamp is used to clamp the pipe and rotate it to complete the connection. Its working principle is to convert the clamping force into torque. The greater the force used in the twisting direction, the tighter the clamp. As in the scheme described above, the rapid movement of the movable clamp body in the pipe clamp is achieved through the cooperation of the turntable, gears and movable clamp body, but in this process, it only speeds up the positioning of the pipe clamp on the pipe body. When the clamp body is clamped, only the movable clamp body and the fixed clamp body are used to contact the surface of the pipe body, and no additional tightening force is applied to enhance the tightening force between the pipe clamp and the pipe body. At the same time, in the process of tilting, pressing and rotating the handle of the pipe clamp, the pipe clamp cannot continuously apply a tightening force to the pipe body, which may cause the pipe clamp and the pipe body to loosen or slide under the application of a certain force, especially when the pipe surface is smooth, which greatly reduces the use effect of the pipe clamp. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a multifunctional pipe clamp, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The multifunctional pipe clamp comprises a fixed clamp handle, the end of the fixed clamp handle is fixedly mounted with a fixed clamp head, the fixed clamp head is provided with a movable clamp groove, an adjusting bolt is rotatably mounted inside the movable clamp groove, and the upper end surface of the fixed clamp head is movably mounted with a movable clamp head; The fixed clamp head and the movable clamp head are provided with a fastening assembly, the fixed clamp handle is provided with a driving assembly, and the driving assembly is provided with a positioning assembly. The clamping force between the pipe clamp and the pipeline is enhanced by the cooperation of the fastening assembly and the positioning assembly.

[0007] Preferably, the fastening assembly includes a positioning wheel rotatably mounted on the movable pliers head, a fastening chain is fixedly connected to the positioning wheel, a symmetrically arranged guide wheel is rotatably mounted on the side end surface of the movable pliers head, and a conduction wheel is rotatably mounted on the side end surface of the movable pliers head and below the guide wheel.

[0008] 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 a driving disk, 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.

[0009] Preferably, the end of the fastening chain away from the positioning wheel sequentially contacts two guide wheels, the conduction wheel and the fixed wheel are fixedly connected, the drive shaft is rotatably mounted on the fixed clamp head, and the transverse tooth block is meshed with the ring tooth block.

[0010] Preferably, the driving assembly comprises a sliding groove provided on the fixed clamp handle, a sliding block is slidably mounted inside the sliding groove, a sliding plate is fixedly mounted on the top of the sliding block, and a tension spring is fixedly connected to one end of the sliding block.

[0011] Preferably, a limiting groove is provided on the inner side surface of the sliding groove, a limiting block used in conjunction with the limiting groove is fixedly installed on the side end surface of the sliding block, a cylindrical groove is provided inside the sliding groove, and one end of the tension spring away from the sliding block is fixedly connected to the inside of the cylindrical groove.

[0012] Preferably, the positioning assembly includes an air cylinder fixedly mounted inside the fixed clamp handle, a push rod being slidably mounted on the air cylinder, a piston being fixedly mounted on one end of the push rod, an air outlet of the air cylinder being fixedly connected to an air outlet pipe, an end of the air outlet pipe away from the air cylinder is fixedly connected to a forked pipe, and a pushing air bag is fixedly mounted on one end of the forked pipe away from the air outlet pipe.

[0013] Preferably, a pushing groove is provided inside the fixed pliers head, a mounting block is slidably installed inside the pushing groove, anti-slip teeth are fixedly installed on the mounting block and the movable pliers head, a positioning block is fixedly installed on the side end surface of the mounting block, a spring is fixedly connected to the positioning block, a positioning groove is provided inside the pushing groove for use with the positioning block, and a storage groove is provided at the end of the fixed pliers head.

[0014] An extrusion groove is provided at the end of the fixed clamp head and at one side of the storage groove, an extrusion air bag is arranged inside the extrusion groove, and a connecting pipe is fixedly connected to the extrusion air bag.

[0015] Preferably, one end of the bifurcated tube away from the air outlet pipe extends to the interior of the positioning groove, the pushing airbag is located inside the positioning groove, the storage groove is connected to the positioning groove, the anti-slip teeth are located inside the storage groove, one end of the connecting tube away from the extrusion airbag is fixedly connected to the air outlet pipe, and the other end of the pushing rod extends to the interior of the sliding groove and is fixedly connected to the sliding block.

[0016] The present invention provides a multifunctional pipe clamp. Compared with the prior art, it has the following beneficial effects: 1. In the present invention, when the movable clamp head moves horizontally toward the fixed clamp head, the movable clamp head will synchronously drive the L-shaped plate to move, and the horizontal tooth block on the L-shaped plate cooperates with the ring tooth block on the driving shaft. The ring tooth block drives the driving plate to rotate counterclockwise through the driving shaft, and the fastening chain in a horizontal state will be tilted at an angle. The tilted fastening chain is fastened and fitted on the pipeline to complete the fastening of the pipeline, which can ensure that the clamp head fixes the pipeline more evenly, helps to prevent the pipe clamp from sliding or loosening during operation, and improves work safety; 2. In the present invention, when the fixed clamp handle is pressed downward to tilt, the sliding plate is pushed by the palm, and the sliding block on the sliding plate drives the piston on the push rod to move in the gas storage cylinder, and the gas in the gas storage cylinder enters the bifurcated pipe through the gas outlet pipe, and part of the gas in the bifurcated pipe enters the pushing airbag, and the bulging of the pushing airbag pushes the mounting block to slide in the pushing groove, and the anti-skid teeth on the mounting block protrude from the receiving groove, effectively enhancing the friction between the fixed clamp head and the pipeline, and effectively enhancing the fastening force between the pipeline and the clamp head; 3. In the present invention, another part of the gas in the bifurcated pipe will enter the extrusion airbag through the connecting pipe. The extrusion airbag will expand due to the filling of gas. After expansion, the extrusion airbag will fit tightly to the surface of the pipeline, effectively increasing the pressure between the pipeline and the fixed clamp head, further enhancing the fastening force, and ensuring that the clamp head and the pipeline will not loosen; 4. The present invention ensures the fastening force between the pipe clamp and the pipeline through the coordinated use of the fastening component, the driving component and the positioning component, achieves a more uniform and stable fastening effect on the pipeline, and improves work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 It is a structural schematic diagram of the movable clamp head in the present invention; Figure 6 It is a structural schematic diagram of the positioning component in the present invention; Figure 7 It is a partial cross-sectional view of the fixed clamp head in the present invention; Figure 8 It is a side sectional view of the fixed clamp head in the present invention.

[0018] In the figure: 1. fixed clamp handle; 2. fixed clamp head; 3. movable clamp groove; 4. adjusting bolt; 5. movable clamp head; 6. positioning wheel; 7. fastening chain; 8. guide wheel; 9. conduction wheel; 10. driving groove; 11. driving shaft; 12. driving plate; 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. pushing rod; 26. outlet pipe; 27. bifurcated pipe; 28. pushing airbag; 29. ​​pushing groove; 30. mounting block; 31. anti-skid teeth; 32. positioning block; 33. spring; 34. positioning groove; 35. storage groove; 36. extrusion groove; 37. extrusion airbag; 38. connecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8The present invention is a multifunctional pipe clamp, comprising a fixed clamp handle 1, a fixed clamp head 2 is fixedly installed at the end of the fixed clamp handle 1, a movable clamp groove 3 is opened on the fixed clamp head 2, an adjusting bolt 4 is rotatably installed inside the movable clamp groove 3, and a movable clamp head 5 is movably installed on the upper end surface of the fixed clamp head 2, a fastening component is arranged on the fixed clamp head 2 and the movable clamp head 5, a driving component is arranged on the fixed clamp handle 1, 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 clamp and the pipeline is enhanced, wherein the adjusting bolt 4 and the movable clamp head 5 are movably installed, and the position adjustment of the movable clamp head 5 is realized by rotating the adjusting bolt 4. Since this technology is well known to people in the field, it will not be described in detail here.

[0021] The fastening assembly includes a positioning wheel 6 rotatably mounted on the movable clamp head 5, a fastening chain 7 is fixedly connected to the positioning wheel 6, a symmetrically arranged guide wheel 8 is rotatably mounted on the side end surface of the movable clamp head 5, a conduction wheel 9 is rotatably mounted on the side end surface of the movable clamp head 5 and below the guide wheel 8, a driving groove 10 is opened inside the fixed clamp head 2, a driving shaft 11 is rotatably mounted inside the driving groove 10, both ends of the driving shaft 11 extend to the outside of the fixed clamp head 2, and a driving disk 12 is fixedly mounted, and the driving disk A fixed wheel 13 is fixedly mounted on 12, an L-shaped plate 14 is fixedly mounted on the tail end of the movable clamp head 5, a transverse tooth block 15 is fixedly mounted on the lower end surface of the L-shaped plate 14, a ring tooth block 16 is fixedly mounted on the drive shaft 11, and the end of the fastening chain 7 away from the positioning wheel 6 sequentially contacts the two guide wheels 8, the conduction wheel 9 and the fixed wheel 13 are fixedly connected, the drive shaft 11 and the fixed clamp head 2 are rotatably mounted, the transverse tooth block 15 is meshed with the ring tooth block 16, wherein the fastening chain 7 is respectively slidably connected with the guide wheel 8 and the conduction wheel 9.

[0022] In this embodiment, when the movable clamp head 5 moves horizontally toward the fixed clamp head 2, the movable clamp head 5 will synchronously drive the L-shaped plate 14 to move, and the transverse 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 drives the drive disk 12 to rotate counterclockwise through the drive shaft 11, and the fastening chain 7 in a horizontal state will be tilted at an angle. The tilted fastening chain 7 is fastened to the pipeline to complete the fastening of the pipeline, which can ensure that the clamp head fixes the pipeline more evenly, helps to prevent the pipe clamp from sliding or loosening during operation, and improves work safety.

[0023] The driving assembly includes a sliding groove 17 provided on the fixed clamp handle 1, a sliding block 18 is slidably installed inside the sliding groove 17, a sliding plate 19 is fixedly installed on the top of the sliding block 18, a tension spring 20 is fixedly connected to one end of the sliding block 18, 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 installed on the side end surface of the sliding block 18, a cylindrical groove 23 is provided inside the sliding groove 17, and one end of the tension spring 20 away from the sliding block 18 is fixedly connected to the inside of the cylindrical groove 23, the positioning assembly includes an air storage cylinder 24 fixedly installed inside the fixed clamp handle 1, a push rod 25 is slidably installed on the air storage cylinder 24, a piston is fixedly installed on one end of the push rod 25, an air outlet of the air storage cylinder 24 is fixedly connected to an air outlet pipe 26, an end of the air outlet pipe 26 away from the air storage cylinder 24 is fixedly connected to a forked pipe 27, and the forked pipe 27 A pushing airbag 28 is fixedly installed at one end away from the air outlet pipe 26, 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 for use 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, wherein the mounting block 30 will not be shifted in position through the cooperation between the positioning block 32 and the positioning groove 34, and an anti-slip pad can be provided on the surface of the sliding plate 19 according to the needs of personnel to ensure that when the fixed pliers handle 1 is tilted at an angle, the palm of the personnel can easily move the sliding plate 19, wherein the piston is a technology well known to personnel in this field and will not be described in detail here.

[0024] An extrusion groove 36 is provided at the end of the fixed pliers head 2 and on one side of the storage groove 35, an extrusion airbag 37 is provided inside the extrusion groove 36, a connecting tube 38 is fixedly connected to the extrusion airbag 37, 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 inside the positioning groove 34, the storage groove 35 is connected to the positioning groove 34, the anti-slip teeth 31 are inside the storage groove 35, one end of the connecting tube 38 away from the extrusion airbag 37 is fixedly connected to the air outlet pipe 26, 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.

[0025] In this embodiment, when the fixed clamp handle 1 is pressed downward to tilt, the sliding plate 19 is pushed by the palm of the hand, and the sliding block 18 on the sliding plate 19 drives the piston on the push rod 25 to move in the gas cylinder 24, and the gas in the gas cylinder 24 enters the bifurcated tube 27 through the gas outlet pipe 26, and part of the gas in the bifurcated tube 27 enters the pushing airbag 28, and the bulging of the pushing airbag 28 pushes the mounting block 30 to slide in the pushing groove 29, and the anti-skid teeth 31 on the mounting block 30 protrude from the storage groove 35, effectively enhancing the friction between the fixed clamp head 2 and the pipeline, and effectively enhancing the fastening force between the pipeline and the clamp head, and another part of the gas in the bifurcated tube 27 enters the squeezing airbag 37 through the connecting pipe 38, and the squeezing airbag 37 expands due to the filling of gas. After the expansion, the squeezing airbag 37 will fit tightly against the surface of the pipeline, effectively increasing the pressure between the pipeline and the fixed clamp head 2, further enhancing the fastening force, and ensuring that the clamp head and the pipeline will not loosen.

[0026] Working principle: When in use, place the pipe between the movable clamp head 5 and the fixed clamp head 2, and then use the adjusting bolt 4 to adjust the position of the movable clamp head 5. When the movable clamp head 5 moves horizontally toward the fixed clamp head 2, the movable clamp 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 driving shaft 11. The ring tooth block 16 drives the driving disk 12 to rotate counterclockwise through the driving shaft 11. The fastening chain 7 in a horizontal state will tilt at an angle. The tilted fastening chain 7 is fastened to the pipe to complete the fastening of the pipe. When the fixed clamp handle 1 is pressed downward to tilt, the sliding plate 19 is pushed by the palm of the hand, and the sliding block 18 on the sliding plate 19 drives the piston on the pushing rod 25 to move in the gas storage cylinder 24, and the gas in the gas storage cylinder 24 enters the bifurcated tube 27 through the gas outlet pipe 26, and part of the gas in the bifurcated tube 27 enters the pushing airbag 28, and the bulging of the pushing airbag 28 pushes the mounting block 30 to slide in the pushing groove 29, and the anti-skid teeth 31 on the mounting block 30 protrude from the storage groove 35, effectively enhancing the friction between the fixed clamp head 2 and the pipeline, and effectively enhancing the fastening force between the pipeline and the clamp head, and another part of the gas in the bifurcated tube 27 enters the squeezing airbag 37 through the connecting pipe 38, and the squeezing airbag 37 expands due to the filling of gas, and the squeezing airbag 37 after expansion will fit closely to the surface of the pipeline, effectively increasing the pressure between the pipeline and the fixed clamp head 2, further enhancing the fastening force, and ensuring that the clamp head and the pipeline will not loosen; After the pipeline is removed or installed, the movable clamp head 5 is moved away from the fixed clamp head 2 by adjusting the bolt 4. The driving shaft 11 will drive the driving disk 12 to rotate clockwise by utilizing the cooperation of the transverse tooth block 15 and the ring tooth block 16. The fastening chain 7 close to the pipeline will become loose. At the same time, the gas in the squeezing airbag 37 and the pushing airbag 28 will be re-drawn into the air storage cylinder 24. The mounting block 30 will be restored to its original position by the elastic force of the spring 33, and the sliding plate 19 will be restored to its original position by the position of the tension spring 20, so as to facilitate the installation or removal of the new pipeline.

[0027] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the 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. The clamping force between the pipe clamp and the pipe is enhanced by the cooperation of the fastening assembly and the positioning assembly.

2. The multifunctional pipe wrench according to claim 1, characterized in that: 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), and a conduction wheel (9) being rotatably mounted on the side end surface of the movable clamp head (5) and below the guide wheel (8).

3. The multifunctional pipe wrench according to claim 2, characterized in that: A driving groove (10) is provided inside the fixed pliers head (2), a driving shaft (11) is rotatably mounted 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 mounted with a driving disk (12), a fixed wheel (13) is fixedly mounted on the driving disk (12), an L-shaped plate (14) is fixedly mounted on the rear end of the movable pliers head (5), a transverse tooth block (15) is fixedly mounted on the lower end surface of the L-shaped plate (14), and a ring tooth block (16) is fixedly mounted on the driving shaft (11).

4. The multifunctional pipe wrench according to claim 3, 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).

5. The multifunctional pipe wrench according to claim 1, characterized in that: The driving assembly comprises a sliding groove (17) formed on a fixed clamp handle (1), a sliding block (18) being slidably mounted inside the sliding groove (17), a sliding plate (19) being fixedly mounted on the top of the sliding block (18), and a tension spring (20) being fixedly connected to one end of the sliding block (18).

6. The multifunctional pipe wrench according to claim 5, characterized in that: The inner side surface of the sliding groove (17) is provided with a limit groove (21), the side end surface of the sliding block (18) is fixedly mounted with a limit block (22) for use with the limit groove (21), the interior of the sliding groove (17) is provided with a cylindrical groove (23), and one end of the tension spring (20) away from the sliding block (18) is fixedly connected to the interior of the cylindrical groove (23).

7. The multifunctional pipe wrench according to claim 5, characterized in that: The positioning assembly comprises an air cylinder (24) fixedly mounted inside the fixed clamp handle (1), a push rod (25) being slidably mounted on the air cylinder (24), a piston being fixedly mounted on one end of the push rod (25), an air outlet of the air cylinder (24) being fixedly connected to an air outlet pipe (26), an end of the air outlet pipe (26) away from the air cylinder (24) being fixedly connected to a bifurcated pipe (27), and an end of the bifurcated pipe (27) away from the air outlet pipe (26) being fixedly mounted to a push air bag (28).

8. The multifunctional pipe wrench according to claim 7, characterized in that: The fixed pliers head (2) is provided with a pushing groove (29) inside, a mounting block (30) is slidably mounted inside the pushing groove (29), anti-slip teeth (31) are fixedly mounted on the mounting block (30) and the movable pliers head (5), a positioning block (32) is fixedly mounted 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) for use with the positioning block (32) is provided inside the pushing groove (29), and a receiving groove (35) is provided at the end of the fixed pliers head (2).

9. The multifunctional pipe wrench according to claim 8, characterized in that: 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).

10. The multifunctional pipe wrench according to claim 9, 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).

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