Pipe wrench with replaceable jaw

Abstract

The pipe wrench comprises a pipe wrench body and two adjusting jaws, positioning holes are formed in the side walls of a movable jaw and a fixed jaw of the pipe wrench body, and the two adjusting jaws are inserted into the positioning holes in the side walls of the movable jaw and the fixed jaw respectively. The adjusting jaw comprises a clamp plate, a positioning rod, a through hole and a fastening screw rod, the positioning rod is installed on the side wall of the clamp plate and can be installed in the positioning hole in an inserted mode, the through hole is formed in the side wall of the clamp plate, the fastening screw rod is installed in the through hole in an inserted mode, and a threaded hole is formed in the clamping end of the pipe wrench body. According to the pipe wrench, the adjusting jaw is installed on the pipe wrench body through cooperation of the positioning rod and the positioning hole and can be conveniently replaced, meanwhile, due to the fact that the wrench plate is in the horizontal state, the rubber strip above the wrench plate serves as an anti-skid structure, damage to an external pipeline can be avoided while certain friction force is kept, and corrosion of the pipeline is prevented from being accelerated.

Description

Technical Field

[0001] This patent relates to the technical field of pipe wrenches, specifically a pipe wrench with replaceable jaws. Background Art

[0002] A pipe wrench is a mechanical tool used to tighten or loosen pipe fittings. The common jaws of a pipe wrench are serrated planes made of a metal material with relatively high hardness;

[0003] The existing pipe wrench consists of a pipe handle, pipe teeth, an adjusting wheel, and a movable hook handle. When in use, rotating the adjusting wheel can change the distance between the two serrated planes, making the serrated plane of the pipe teeth closely contact the surface of the pipe. Then, rotating the pipe handle makes the pipe rotate. Since the contact area between the tooth tips of the serrated plane of the pipe teeth and the pipe surface is small and the contact stress is large, the protective layer of the pipe wall is easily damaged, biting the metal matrix of the pipe and accelerating the corrosion of the pipe. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, the purpose of this patent is to provide a pipe wrench with replaceable jaws.

[0005] The technical solution adopted by this patent to solve its technical problems is: a pipe wrench with replaceable jaws, including a pipe wrench body and an adjusting jaw. Positioning holes are provided on the side walls of the movable jaw and the fixed jaw of the pipe wrench body. There are two adjusting jaws, and the two adjusting jaws are respectively inserted and installed in the positioning holes on the side walls of the movable jaw and the fixed jaw;

[0006] The adjusting jaw includes a jaw plate, a positioning rod, a through hole, and a fastening screw. A positioning rod is installed on the side wall of the jaw plate. The positioning rod can be inserted and installed in the positioning hole. A through hole is provided on the side wall of the jaw plate, and a fastening screw is inserted and installed in the through hole. A threaded hole is provided at the clamping end of the pipe wrench body, and the fastening screw can be screwed into and installed in the threaded hole;

[0007] A wedge block is slidably installed on the side wall of the jaw plate.

[0008] Furthermore, a magnet is installed on the inner wall of the positioning hole. The magnet can attract and combine with the lower wall of the positioning rod. A rubber ring is installed on the inner side wall of the positioning hole, and the rubber ring is sleeved on the outside of the positioning rod.

[0009] Furthermore, a limiting ring is installed on the outside of the fastening screw. The screw head and the limiting ring of the fastening screw are respectively arranged on the upper and lower sides of the jaw plate.

[0010] Furthermore, a sliding groove is provided on the upper wall of the jaw plate. A sliding block is installed on the lower wall of the wedge block. The sliding block is slidably installed in the sliding groove. An adjusting screw is screwed into the side wall of the jaw plate. The adjusting screw is inserted into the sliding groove, and the adjusting screw is connected to the side wall of the sliding block.

[0011] Further, a connecting groove is formed in the side wall of the slider, the adjusting screw rod is inserted and installed in the connecting groove, a limiting block is installed at one end of the adjusting screw rod located in the connecting groove, and the limiting block can rotate in the connecting groove.

[0012] Further, a rubber strip is attached to the side wall of the clamping plate.

[0013] The beneficial effects of this patent are as follows:

[0014] In this device, the adjusting jaw is installed on the pipe wrench body through the cooperation between the positioning rod and the positioning hole, which facilitates its replacement. At the same time, since the clamping plate is in a horizontal state, the rubber strip above it serves as an anti-slip structure, which can avoid damaging the external pipeline while maintaining a certain frictional force and prevent accelerating the corrosion of the pipeline.

[0015] In addition, an inclined block is provided above the clamping plate of this device, which can play a limiting role when structures such as a nut are rotated, avoiding the pipe wrench body from slipping off the nut. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of this patent.

[0017] Figure 2 is a schematic structural diagram of the adjusting jaw of this patent.

[0018] Figure 3 is Figure 2 a schematic structural diagram of the structure at A in

[0019] Description of the reference numerals: 1 pipe wrench body, 2 adjusting jaw, 21 clamping plate, 22 positioning rod, 23 through hole, 24 fastening screw rod, 3 positioning hole, 4 threaded hole, 5 inclined block, 6 magnet, 7 rubber ring, 8 limiting ring, 9 sliding groove, 10 slider, 11 adjusting screw rod, 12 connecting groove, 13 limiting block, 14 rubber strip. Detailed Embodiments

[0020] The following will further elaborate on this patent in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate this patent and not to limit the scope of this patent. In addition, it should be understood that after reading the content taught by this patent, those skilled in the art can make various changes or modifications to this patent, and these equivalent forms also fall within the scope defined by the appended claims of the application.

[0021] See Figure 1 and Figure 2 and Figure 3This is a schematic structural diagram of the patent. A pipe wrench with replaceable jaws includes a pipe wrench body 1 and an adjusting jaw 2. Positioning holes 3 are provided on the side walls of the movable jaw and the fixed jaw of the pipe wrench body 1. There are two adjusting jaws 2, and the two adjusting jaws 2 are respectively inserted and installed in the positioning holes 3 on the side walls of the movable jaw and the fixed jaw;

[0022] The pipe wrench body 1 in this article belongs to the prior art and is consistent with the existing pipe wrench structure. Its adjusting jaw 2 is installed on the pipe wrench body 1 through the cooperation between the positioning rod 22 and the positioning hole 3, and is fixed by the magnet 6 in the positioning hole 3, which is very convenient and fast during disassembly or replacement;

[0023] The adjusting jaw 2 includes a jaw plate 21, a positioning rod 22, a through hole 23 and a fastening screw 24. A positioning rod 22 is installed on the side wall of the jaw plate 21. The positioning rod 22 can be inserted and installed in the positioning hole 3. A through hole 23 is provided on the side wall of the jaw plate 21. A fastening screw 24 is inserted and installed in the through hole 23. A threaded hole 4 is provided at the clamping end of the pipe wrench body 1, and the fastening screw 24 can be screwed and installed in the threaded hole 4;

[0024] In order to ensure the stability of the jaw plate 21 after installation, the device also sets a through hole 23 and a fastening screw 24 on the jaw plate 21. Through the cooperation between the fastening screw 24 and the threaded hole 4, the jaw plate 21 is further fixed to ensure the stability of the installation of the jaw plate 21 and avoid the phenomenon of the jaw plate 21 falling off during the process of rotating external components;

[0025] An inclined block 5 is slidably installed on the side wall of the jaw plate 21;

[0026] The setting of the inclined block 5 can play a limiting role when using the device to rotate the nut structure, and avoid the pipe wrench body 1 slipping off the nut.

[0027] A magnet 6 is installed on the inner wall of the positioning hole 3. The magnet 6 can be attracted to the lower wall of the positioning rod 22. A rubber ring 7 is installed on the inner side wall of the positioning hole 3. The rubber ring 7 is sleeved on the outside of the positioning rod 22;

[0028] Through the setting of the magnet 6, the jaw plate 21 can be quickly and preliminarily positioned. The setting of the rubber ring 7 can prevent external impurities or water droplets from entering the positioning hole 3.

[0029] A limit ring 8 is installed on the outside of the fastening screw 24. The screw head and the limit ring 8 of the fastening screw 24 are respectively arranged on the upper and lower sides of the jaw plate 21;

[0030] Through the setting of the limit ring 8, the fastening screw 24 can be fixed on the jaw plate 21 to prevent the fastening screw 24 from detaching from the jaw plate 21 and avoid loss.

[0031] The upper wall of the clamping plate 21 is provided with a sliding groove 9. The lower wall of the inclined block 5 is installed with a sliding block 10. The sliding block 10 is slidably installed in the sliding groove 9. The side wall of the clamping plate 21 is screwed with an adjusting screw 11. The adjusting screw 11 is inserted into the sliding groove 9. The adjusting screw 11 is connected to the side wall of the sliding block 10;

[0032] In this article, the position of the inclined block 5 can be changed so that its position can be adjusted according to the size of the external nut, improving the applicability of the device.

[0033] The side wall of the sliding block 10 is provided with a connecting groove 12. The adjusting screw 11 is inserted and installed in the connecting groove 12. One end of the adjusting screw 11 located in the connecting groove 12 is installed with a limiting block 13. The limiting block 13 can rotate in the connecting groove 12;

[0034] Because the adjusting screw 11 is installed on the sliding block 10 through the cooperation between the limiting block 13 and the connecting groove 12, when the adjusting screw 11 is rotated, the sliding block 10 does not rotate together with the adjusting screw 11.

[0035] The side wall of the clamping plate 21 is fitted with a rubber strip 14. By setting the rubber strip 14, the friction between the clamping plate 21 and the external pipe fitting or nut can be increased, ensuring the stability of the device after clamping the external pipe fitting or nut.

[0036] When this patent works, first install the clamping plate 21 on the movable jaw and the fixed jaw of the pipe wrench body 1, so that the positioning rod 22 is inserted into the positioning hole 3. At this time, the magnet 6 adsorbs to the positioning rod 22, preliminarily fixing the clamping plate 21. Then the staff rotates the fastening screw 24 so that the fastening screw 24 is screwed into the threaded hole 4 to complete the installation of the clamping plate 21;

[0037] Then use this device to screw the external component. When using this device to screw the external nut, the position of the inclined block 5 can be adjusted by rotating the adjusting screw 11 according to the size of the nut.

[0038] For those skilled in the art, it is obvious that this patent is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this patent. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of this patent is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in this patent. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipe wrench with replaceable jaws, comprising a pipe wrench body (1) and an adjusting jaw (2), characterized in that: Positioning holes (3) are provided in the side walls of the movable jaw and the fixed jaw of the pipe wrench body (1). There are two adjusting jaws (2), and the two adjusting jaws (2) are respectively inserted and installed in the positioning holes (3) in the side walls of the movable jaw and the fixed jaw; The adjusting jaw (2) includes a jaw plate (21), a positioning rod (22), a through hole (23) and a fastening screw (24). A positioning rod (22) is installed on the side wall of the jaw plate (21). The positioning rod (22) can be inserted and installed in the positioning hole (3). A through hole (23) is provided in the side wall of the jaw plate (21). A fastening screw (24) is inserted and installed in the through hole (23). A threaded hole (4) is provided at the clamping end of the pipe wrench body (1). The fastening screw (24) can be screwed and installed in the threaded hole (4); A wedge block (5) is slidably installed on the side wall of the jaw plate (21).

2. The pipe wrench capable of replacing jaws according to claim 1, wherein: A magnet (6) is installed on the inner wall of the positioning hole (3). The magnet (6) can be attracted to the lower wall of the positioning rod (22). A rubber ring (7) is installed on the inner side wall of the positioning hole (3). The rubber ring (7) is sleeved on the outside of the positioning rod (22).

3. The pipe wrench capable of replacing jaws according to claim 1, wherein: A limiting ring (8) is installed on the outside of the fastening screw (24). The screw head and the limiting ring (8) of the fastening screw (24) are respectively arranged on the upper and lower sides of the jaw plate (21).

4. A pipe wrench capable of replacing jaws according to claim 1, characterized in that: A sliding groove (9) is provided on the upper wall of the jaw plate (21). A sliding block (10) is installed on the lower wall of the wedge block (5). The sliding block (10) is slidably installed in the sliding groove (9). An adjusting screw (11) is screwed and installed on the side wall of the jaw plate (21). The adjusting screw (11) is inserted into the sliding groove (9). The adjusting screw (11) is connected to the side wall of the sliding block (10).

5. The pipe wrench capable of replacing jaws according to claim 4, characterized in that: A connecting groove (12) is provided on the side wall of the sliding block (10). The adjusting screw (11) is inserted and installed in the connecting groove (12). A limiting block (13) is installed at one end of the adjusting screw (11) located in the connecting groove (12). The limiting block (13) can rotate in the connecting groove (12).

6. A pipe wrench capable of replacing jaws according to claim 1, characterized in that: A rubber strip (14) is attached to the side wall of the jaw plate (21).

Images