High-adaptation pipe wrench

Abstract

The utility model relates to a high-adaptation pipe wrench, which belongs to the technical field of hand tools, and comprises a wrench handle body, a fixed jaw, a movable jaw and an adjusting nut, the fixed jaw is connected to one end of the wrench handle body, the movable jaw comprises a hook head part and a vertical part which are integrally formed, the surface of the hook head part is connected with a clamping part, and the vertical part is connected with the clamping part. The clamping part is opposite to the fixed jaw, the vertical part is in sliding connection with the plier handle body and is in threaded connection with the adjusting nut through surface threads of the vertical part, a sawtooth part is arranged on the surface of the vertical part, the surface threads of the sawtooth part and the surface threads of the vertical part are distributed up and down, and a clamping area is defined by the sawtooth part, the fixed jaw and the clamping part. According to the utility model, the sawtooth part is additionally arranged and forms three-surface clamping with the fixed jaw and the clamping part, so that the clamping stability of a large pipe fitting is improved, and the clamping effect is improved.

Description

Technical Field

[0001] The utility model relates to a pipe clamp, in particular to a high-adaptability pipe clamp, which belongs to the technical field of hand tools. Background Art

[0002] A pipe clamp is a tool used to clamp and rotate pipe fittings. The size of its jaws can only be achieved by turning the adjusting nut to move the movable jaw. For working conditions where the diameter of some pipe fittings does not change much, frequent adjustments to the size of the jaws waste time and reduce work efficiency. For larger pipe fittings, only upper and lower clamping through the fixed jaws and movable jaws has a limited engagement surface, which may result in insufficient clamping and reduce the clamping effect. Utility Model Content

[0003] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a high-adaptability pipe clamp, which forms a three-sided clamp with a fixed jaw and a clamping part by adding a serrated portion, thereby improving the clamping stability and the clamping effect.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a high-adaptation pipe pliers, including a pliers handle body, a fixed jaw, a movable jaw and an adjusting nut, the fixed jaw is connected to one end of the pliers handle body, the movable jaw includes an integrally formed hook head and a vertical portion, the surface of the hook head is connected to a clamping portion, the clamping portion is opposite to the fixed jaw, the vertical portion is slidably connected to the pliers handle body, and is threadedly connected to the adjusting nut through its surface thread, the surface of the vertical portion is provided with a serrated portion, the serrated portion and the surface thread of the vertical portion are distributed up and down, and the serrated portion, the fixed jaw and the clamping portion form a clamping area.

[0005] Furthermore, a first protrusion is provided at the connection between the fixed jaw and the clamp handle body, and the fixed jaw is detachably connected to a first groove on the surface of the clamp handle body through the first protrusion.

[0006] Furthermore, a second protrusion is provided at the connection between the clamping portion and the hook head portion, and the clamping portion is detachably connected to the second groove on the surface of the hook head portion through the second protrusion.

[0007] Furthermore, the clamping area is trapezoidal.

[0008] Furthermore, the fixed jaw has a trapezoidal structure, and its clamping surface is arranged to be inclined upward.

[0009] Furthermore, a cover shell is provided on the adjusting nut, and a limiting groove is provided on the connection surface between the surface of the clamp handle body and the cover shell, and the cover shell can reciprocate in the limiting groove.

[0010] Furthermore, the cover shell is made of soft material.

[0011] Furthermore, the surface of the vertical portion is provided with reinforcing ribs.

[0012] Furthermore, the ends of the fixed jaw and the clamping portion are respectively provided with guide surfaces.

[0013] Furthermore, an inner hole is provided at one end of the clamp handle body away from the fixed jaw.

[0014] The utility model forms a three-sided clamp with the fixed jaws and the clamping part by adding a serration portion, thereby improving the stability of clamping large pipe fittings and improving the clamping effect; the fixed jaw adopts a trapezoidal structure, and its clamping surface is arranged to be inclined upward. For pipe fittings with small diameter changes, the clamping requirements can be met without adjusting the movable jaw, thereby improving work efficiency; the fixed jaw and the movable jaw are both detachably connected, which can solve the problem of affecting the clamping effect due to wear of the clamping surface due to long-term use, thereby reducing replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram (I) of the utility model;

[0016] Figure 2 It is a structural schematic diagram (II) of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of part A;

[0018] Figure 4 It is a structural schematic diagram of the movable jaws described in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the fixed jaws described in the utility model.

[0020] In the figure, 1. the handle body of the pliers; 2. the fixed jaws; 3. the movable jaws; 301. the hook portion; 302. the vertical portion; 4. the clamping portion; 5. the adjusting nut; 6. the serrated portion; 7. the first protrusion; 8. the second protrusion; 9. the cover; 10. the limiting groove; 11. the reinforcing ribs; 12. the guide surface; 13. the inner hole. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 To Attachment Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0022] Embodiment 1:

[0023] A highly adaptable pipe clamp, comprising a clamp handle body 1, a fixed jaw 2, a movable jaw 3 and an adjusting nut 5, wherein the fixed jaw 2 is connected to one end of the clamp handle body 1, and the movable jaw 3 comprises an integrally formed hook head 301 and a vertical portion 302, wherein the surface of the hook head 301 is connected with a clamping portion 4, wherein the clamping portion 4 is opposite to the fixed jaw 2, and the vertical portion 302 is slidably connected to the clamp handle body 1 and is screwed with the adjusting nut 5 through its surface threads, and a serration portion 6 is provided on the surface of the vertical portion 302, wherein the serration portion 6 and the surface threads of the vertical portion 302 are distributed up and down, and the serration portion 6, the fixed jaw 2 and the clamping portion 4 enclose a clamping area, and for working conditions where the pipe fitting is relatively large, three-sided clamping can be achieved to improve the clamping effect;

[0024] A first protrusion 7 is provided at the connection between the fixed jaw 2 and the clamp handle body 1, and the fixed jaw 2 is detachably connected to the first groove on the surface of the clamp handle body 1 through the first protrusion 7; a second protrusion 8 is provided at the connection between the clamping part 4 and the hook head part 301, and the clamping part 4 is detachably connected to the second groove on the surface of the hook head part 301 through the second protrusion 8.

[0025] The clamping surfaces of the fixed jaw 2 and the clamping part 4 will wear out after long-term use and are consumables. Only the fixed jaw 2 and the clamping part 4 need to be replaced, and there is no need to replace the clamp handle body 1 and the movable jaw 3, which reduces the replacement cost.

[0026] The adjusting nut 5 is covered with a cover shell 9, and a limiting groove 10 is provided on the connection surface of the clamp handle body 1 and the cover shell 9. The cover shell 9 can reciprocate in the limiting groove 10. When the adjusting nut 5 needs to be adjusted, the cover shell 9 only needs to be slid along the limiting groove 10, and then the adjusting nut 5 is operated. When the adjustment is completed, the cover shell 9 is moved back to the initial position to protect the adjusting nut 5, so as to prevent debris from entering the adjusting nut 5 and causing the pipe clamp to get stuck.

[0027] The cover 9 is made of soft material, such as soft plastic or soft iron wire.

[0028] The surface of the vertical portion 302 is provided with reinforcing ribs 11 , which can improve the strength of the movable jaw 3 .

[0029] The ends of the fixed jaw 2 and the clamping portion 4 are respectively provided with guide surfaces 12 to facilitate clamping of the pipe.

[0030] An inner hole 13 is provided at one end of the pliers handle body 1 away from the fixed jaw 2. The inner hole 13 can be a polygonal structure such as a hexagon or octagon, which is used to tighten or loosen the locking member, and can also be used as a hanging hole for easy storage.

[0031] The clamp handle body 1 can adopt a flat or cylindrical structure. When it is a cylindrical structure, a telescopic clamp handle body can be adopted. This technology belongs to a structure that has been publicly used in the field and will not be elaborated in this article.

[0032] Embodiment 2:

[0033] Different from Example 1, in this embodiment, the clamping area is trapezoidal, which can achieve clamping work for pipes with little change in diameter. Without adjusting the movable jaw 3, it can meet the clamping requirements and improve work efficiency.

[0034] When the clamping area is trapezoidal, the fixed jaw 2 has a trapezoidal structure, and its clamping surface is inclined upward, forming a trapezoidal clamping area with the clamping portion 4 arranged horizontally with the clamping surface; the clamping surface of the clamping portion 4 can also be inclined, and different inclination angles can also form a trapezoidal clamping area.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-adaptability pipe clamp, comprising a clamp handle body (1), a fixed jaw (2), a movable jaw (3) and an adjusting nut (5), wherein the fixed jaw (2) is connected to one end of the clamp handle body (1), the movable jaw (3) comprises an integrally formed hook head portion (301) and a vertical portion (302), the surface of the hook head portion (301) is connected with a clamping portion (4), the clamping portion (4) is opposite to the fixed jaw (2), the vertical portion (302) is slidably connected to the clamp handle body (1), and is screwed to the adjusting nut (5) through a surface thread thereof, characterized in that: The surface of the vertical portion (302) is provided with a serration portion (6), the serration portion (6) and the threads on the surface of the vertical portion (302) are distributed up and down, and the serration portion (6), the fixed jaw (2) and the clamping portion (4) form a clamping area.

2. The high-adaptability pipe clamp according to claim 1, characterized in that: A first protrusion (7) is provided at the connection between the fixed jaw (2) and the clamp handle body (1), and the fixed jaw (2) is detachably connected to a first groove on the surface of the clamp handle body (1) via the first protrusion (7).

3. The high-adaptability pipe clamp according to claim 1, characterized in that: A second convex block (8) is provided at the connection between the clamping portion (4) and the hook portion (301), and the clamping portion (4) is detachably connected to a second groove on the surface of the hook portion (301) via the second convex block (8).

4. The high-adaptability pipe clamp according to claim 1, characterized in that: The clamping area is trapezoidal.

5. The high-adaptability pipe clamp according to claim 4, characterized in that: The fixed jaw (2) is of a trapezoidal structure, and its clamping surface is arranged to be inclined upward.

6. The high-adaptability pipe wrench according to claim 1, characterized in that: The adjusting nut (5) is covered with a cover shell (9), and a limiting groove (10) is provided on the surface of the clamp handle body (1) at a connection surface with the cover shell (9), and the cover shell (9) can reciprocate in the limiting groove (10).

7. The high-adaptability pipe wrench according to claim 6, characterized in that: The cover shell (9) is made of soft material.

8. The high-adaptability pipe clamp according to claim 1, characterized in that: A reinforcing rib (11) is provided on the surface of the vertical portion (302).

9. The high-adaptability pipe wrench according to claim 1, characterized in that: The ends of the fixed jaw (2) and the clamping portion (4) are respectively provided with guide surfaces (12).

10. The high-adaptability pipe wrench according to claim 1, characterized in that: An inner hole (13) is provided at one end of the clamp handle body (1) away from the fixed jaw (2).

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