Pipe wrench suitable for internal thread pipe

Abstract

The utility model provides a pipe wrench suitable for an internal thread pipe, which belongs to the field of tools and comprises a rod body, a chain and two connecting pieces. An adjusting section is arranged at one end of the rod body; the two connecting pieces are detachably installed on the adjusting section, can move on the adjusting section in the length direction of the rod body and are distributed side by side at intervals. The two ends of the chain correspond to the outer surfaces of the two connecting pieces in a one-to-one mode and are rotationally connected. The chain, the two connecting pieces and the adjusting section located between the two connecting pieces jointly define a clamping ring used for being provided with an inner threaded pipe in a matched mode. The connecting rod has the advantages that the clamping ring is used for being arranged on the periphery of the inner threaded pipe in a sleeved mode, the chain is used for clamping the inner threaded pipe, the inner threaded pipe is arranged in the clamping ring, when the chain clamps the inner threaded pipe, the inner threaded pipe can be rotated by rotating the other end of the rod body, and disassembly and assembly between the inner threaded pipe and all pipeline assemblies are completed; stress points are more, so that the internal threaded pipe is not easy to be damaged by clamping.

Description

Technical Field

[0001] This utility model relates to the field of tools, and more specifically, to a pipe wrench suitable for internally threaded pipes. Background Technology

[0002] Internally threaded pipes are commonly used for connections between pipe assemblies, such as connections between pipes or between pipes and valves. The internal thread structure of the internally threaded pipe allows for reliable connections between pipe assemblies, resulting in connections with high sealing performance and robustness.

[0003] When disassembling and assembling internally threaded pipes, pipe wrenches are usually used to ensure efficiency and reliability. Conventional pipe wrenches use two teeth to clamp the internally threaded pipe and then rotate the handle to disassemble and assemble it. However, the outer surface of a typical internally threaded pipe is smooth and without sharp edges. When the two teeth of the pipe wrench clamp the internally threaded pipe, the force is concentrated at two points, so the outer surface of the internally threaded pipe is easily damaged and deformed. Utility Model Content

[0004] To overcome the problem that conventional pipe wrenches in the existing technology use two teeth to clamp the internally threaded pipe, resulting in concentrated force at two points, the outer surface of the internally threaded pipe is easily damaged and deformed.

[0005] This utility model provides a pipe wrench suitable for internally threaded pipes, the internally threaded pipes being used to connect two pipe assemblies, the pipe wrench comprising:

[0006] A rod, one end of which is provided with an adjustment section;

[0007] Two connectors are detachably mounted on the adjusting section, and the two connectors are movable along the length of the rod on the adjusting section and are distributed side by side at intervals.

[0008] A chain, the two ends of which correspond one-to-one with the outer surfaces of the two connectors and are rotatably connected;

[0009] The chain, the two connectors, and the adjusting section located between the two connectors together form a retaining ring for fitting the internally threaded tube.

[0010] Preferably, a handle is provided at the other end of the rod.

[0011] Preferably, a soft rubber sleeve is fixed to the outer periphery of the handle.

[0012] Preferably, the soft rubber sleeve is provided with an anti-slip structure.

[0013] Preferably, the edges at both ends of the handle are provided with rounded corners.

[0014] Preferably, the outer periphery of the adjusting section is provided with external threads;

[0015] The two connecting parts are threaded sleeves, and the middle part of the two threaded sleeves is provided with an internal thread hole that mates with the external thread. The outer surfaces of the two threaded sleeves are rotatably connected to the corresponding ends of the chain.

[0016] Preferably, the external thread of the adjusting section and the internal thread holes of the two threaded sleeves are coarse threads.

[0017] Preferably, each of the two threaded sleeves includes a sleeve body and an annular rotating body, and an annular groove is formed in the middle part of the outer wall of each of the two sleeve bodies, and the two annular rotating bodies are respectively disposed in the corresponding annular grooves;

[0018] The two sleeve bodies are respectively provided with internal thread holes that are connected to the external threads in the middle part, and the outer surfaces of the two annular rotating bodies are respectively rotatably connected to the corresponding ends of the chain through rotating shafts.

[0019] Preferably, the widths of the two annular grooves are greater than the widths of the corresponding annular rotating bodies.

[0020] Preferably, the outer diameter of the cross-section of the two sleeve bodies at the location where the annular groove is provided is smaller than the inner diameter of the corresponding annular rotating body.

[0021] Beneficial effects:

[0022] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0023] (1) An adjustment section is provided at one end of the rod. The two ends of the chain and the outer surfaces of the two connectors correspond one-to-one and can be rotatably connected. The two connectors are detachably installed on the adjustment section, and the two connectors are distributed side by side and spaced along the length of the rod on the adjustment section, so that the chain, the two connectors and the adjustment section between the two connectors together form a retaining ring. The retaining ring is used to fit around the outer circumference of the internal threaded pipe, and the chain is used to clamp the internal threaded pipe. When the internal threaded pipe is set in the retaining ring and the chain clamps the internal threaded pipe, rotating the other end of the rod can rotate the internal threaded pipe and complete the disassembly and assembly of the internal threaded pipe between various pipe components. When the internal threaded pipe and the chain are in contact, there are many stress points, the stress is uniform, and the stress at each stress point is small, so the internal threaded pipe is not easily damaged by clamping.

[0024] (2) The two connectors can move along the length of the rod on the adjustment section. The distance between the two connectors can be changed by moving one of the connectors or moving both connectors, that is, by changing the size of the retaining ring, so that the chain can clamp internal threaded pipes of different diameters.

[0025] When applying this invention to the scenario of installing and removing internally threaded pipes between various pipe components, firstly, one of the connectors located on the adjusting section and near the rod is disassembled. The internally threaded pipe is then wound between the chain and the adjusting section. Next, the corresponding connector is reinstalled onto the adjusting section, so that the chain, the two connectors, and the adjusting section located between the two connectors together form a retaining ring. The internally threaded pipe is placed within the retaining ring. Then, by moving one or both connectors, the distance between the two connectors is changed, i.e., the size of the retaining ring is changed, causing the chain to clamp the internally threaded pipe. The other end of the rod is rotated to rotate the internally threaded pipe, thus completing the installation and removal of the internally threaded pipe from each pipe component. When the internally threaded pipe and the chain are in contact, there are multiple stress points, resulting in even stress distribution. Each stress point experiences relatively small stress, making it less likely for the internally threaded pipe to be damaged. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the internally threaded pipe used to connect pipe assemblies in this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the pipe wrench of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the pipe wrench of this utility model;

[0030] Figure 4 This utility model Figure 3 Enlarged view of part A in the middle;

[0031] In the picture:

[0032] 1-Internal threaded pipe, 2-Pipe assembly, 3-Rod body, 301-Adjusting section, 302-External thread, 4-Connector, 401-Sleeve body, 402-Annular rotating body, 403-Internal threaded hole, 404-Shaft, 405-Annular groove, 5-Chain, 6-Snap ring, 7-Handle, 701-Soft rubber sleeve, 702-Anti-slip structure, 703-Rounded corner. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0034] Please refer to Figures 1 to 4This utility model provides a pipe wrench suitable for internally threaded pipes. The internally threaded pipe 1 is used to connect two pipe assemblies 2. The pipe wrench includes a rod 3, two connecting parts 4, and a chain 5. One end of the rod 3 is provided with an adjusting section 301. The two ends of the chain 5 correspond one-to-one with the outer surfaces of the two connecting parts 4 and are rotatably connected. The two connecting parts 4 are detachably installed on the adjusting section 301, and the two connecting parts 4 are distributed side by side at intervals along the length direction of the rod 3 on the adjusting section 301, so that the chain 5, the two connecting parts 4, and the adjusting section 301 located between the two connecting parts 4 work together. A retaining ring 6 is formed, which is used to fit around the outer circumference of the internally threaded pipe 1. The chain 5 is used to clamp the internally threaded pipe 1. When the internally threaded pipe 1 is placed inside the retaining ring 6 and the chain 5 clamps the internally threaded pipe 1, rotating the other end of the rod 3 will rotate the internally threaded pipe 1, and complete the disassembly and assembly of the internally threaded pipe 1 between the various pipe components 2. When the internally threaded pipe 1 and the chain 5 are in contact, there are multiple stress points, the stress is even, and the stress at each stress point is small, so the internally threaded pipe 1 is not easily damaged. The two connecting pieces 4 can move along the length of the rod 3 on the adjusting section 301, and can be adjusted by moving one of the connecting pieces. The distance between the two connecting pieces 4 can be changed by moving the two connecting pieces 4, that is, by changing the size of the retaining ring 6, so that the chain 5 can clamp the internally threaded pipes 1 of different diameters. When applying this utility model to the scenario of loading and unloading internally threaded pipes 1 between various pipe assemblies 2, firstly, one of the connecting pieces 4 located on the adjusting section 301 and near the end of the rod 3 is removed, the internally threaded pipe 1 is wrapped between the chain 5 and the adjusting section 301, and then the corresponding connecting piece 4 is reinstalled on the adjusting section 301, so that the chain 5, the two connecting pieces 4 and the two connecting pieces 1 are clamped together. The adjusting sections 301 between the connectors 4 together form a retaining ring 6. The internally threaded tube 1 is placed inside the retaining ring 6. Then, by moving one of the connectors 4 or moving the positions of the two connectors 4, the distance between the two connectors 4 is changed, that is, the size of the retaining ring 6 is changed, so that the chain 5 clamps the internally threaded tube 1. The other end of the rotating rod 3 is used to rotate the internally threaded tube 1, and the disassembly and assembly between the internally threaded tube 1 and each pipe assembly 2 are completed. When the internally threaded tube 1 and the chain 5 are in contact, there are many stress points, the stress is even, and the stress at each stress point is small, so the internally threaded tube 1 is not easily damaged by clamping.

[0035] In a preferred embodiment, a handle 7 is provided at the other end of the lever 3, allowing the lever 3 to be rotated by holding the handle 7. A soft rubber sleeve 701 is fixed to the outer periphery of the handle 7 to improve the comfort of holding the handle 7. An anti-slip structure 702 is provided on the soft rubber sleeve 701 to prevent the handle 7 from slipping out of the hand. The edges at both ends of the handle 7 are respectively provided with rounded corners 703 to improve the safety of using the pipe wrench and prevent the handle 7 from scratching or injuring the user.

[0036] In a preferred embodiment, the outer periphery of the adjusting section 301 is provided with an external thread 302; the two connecting parts 4 are threaded sleeves, and the middle part of the two threaded sleeves is provided with an internal thread hole 403 that mates with the external thread 302. The outer surfaces of the two threaded sleeves are rotatably connected to the corresponding ends of the chain 5, so that the threaded sleeves can be detachably connected to the adjusting section 301 and can move on the adjusting section 301.

[0037] In a preferred embodiment, the external thread 302 of the adjusting section 301 and the internal thread holes 403 of the two threaded sleeves are coarse threads, which facilitates the disassembly and installation of the threaded sleeves and the movement of the threaded sleeves on the adjusting section 301.

[0038] In a preferred embodiment, the two threaded sleeves each include a sleeve body 401 and an annular rotating body 402. The outer walls of the two sleeve bodies 401 are respectively provided with annular grooves 405 in the middle portion, and the two annular rotating bodies 402 are respectively disposed in the corresponding annular grooves 405. The middle portion of the two sleeve bodies 401 is respectively provided with an internal thread hole 403 that mates with the external thread 302. The outer surfaces of the two annular rotating bodies 402 are respectively rotatably connected to the corresponding ends of the chain 5 through a rotating shaft 404, so that the two ends of the chain 5 can rotate relative to the corresponding sleeve body 401 with the corresponding annular rotating body 402, so that the two ends of the chain 5 are correspondingly positioned.

[0039] In a preferred embodiment, the widths of the two annular grooves 405 are respectively greater than the widths of the corresponding annular rotating bodies 402. The outer diameters of the cross-sections of the two sleeve bodies 401 at the locations where the annular grooves 405 are provided are respectively smaller than the inner diameters of the corresponding annular rotating bodies 402, allowing the annular rotating bodies 402 to rotate flexibly within the annular grooves 405 and preventing them from getting stuck.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipe wrench for use with internally threaded pipes, the internally threaded pipes being used to connect two pipe assemblies, characterized in that, The pipe wrench includes: A rod, one end of which is provided with an adjustment section; Two connectors are detachably mounted on the adjusting section, and the two connectors are movable along the length of the rod on the adjusting section and are distributed side by side at intervals. A chain, the two ends of which correspond one-to-one with the outer surfaces of the two connectors and are rotatably connected; The chain, the two connectors, and the adjusting section located between the two connectors together form a retaining ring for fitting the internally threaded tube. The outer periphery of the adjustment section is provided with external threads; the two connecting parts are threaded sleeves, and the middle part of the two threaded sleeves is provided with internal threaded holes that mate with the external threads. The outer surfaces of the two threaded sleeves are rotatably connected to the corresponding ends of the chain. The two threaded sleeves each include a sleeve body and an annular rotating body. The outer walls of the two sleeve bodies are respectively provided with annular grooves in the middle. The two annular rotating bodies are respectively disposed in the corresponding annular grooves. The middle of the two sleeve bodies is respectively provided with an internal thread hole that mates with the external thread. The outer surfaces of the two annular rotating bodies are respectively rotatably connected to the corresponding ends of the chain through a rotating shaft.

2. A pipe wrench suitable for internally threaded pipes as described in claim 1, characterized in that: A handle is provided at the other end of the rod.

3. A pipe wrench suitable for internally threaded pipes as described in claim 2, characterized in that: A soft rubber sleeve is fixed to the outer periphery of the handle.

4. A pipe wrench suitable for internally threaded pipes as described in claim 3, characterized in that: The soft rubber sleeve is equipped with an anti-slip structure.

5. A pipe wrench suitable for internally threaded pipes as described in claim 2, characterized in that: The handle has rounded corners at both ends.

6. A pipe wrench as described in claim 1, characterized in that: The external thread of the adjusting section and the internal thread holes of the two threaded sleeves are coarse threads.

7. A pipe wrench as described in claim 1, characterized in that: The widths of the two annular grooves are respectively greater than the widths of the corresponding annular rotating bodies.

8. A pipe wrench as described in claim 1, characterized in that: The outer diameter of the cross-section of the two sleeve bodies at the location where the annular groove is provided is smaller than the inner diameter of the corresponding annular rotating body.

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