Wrench

Abstract

The wrench comprises a shell, a driving wheel, driven wheels and a handle, a plurality of round holes are formed in one side of the shell, the round holes are evenly distributed in the circumferential direction of the shell, a connecting hole is formed in the center of the other side of the shell, a plurality of driven wheels are arranged, the edge of one side of each driven wheel is fixedly connected with a clamping rod, and the handle is fixedly connected with the clamping rod. The clamping rods are evenly distributed in the circumferential direction of the driving wheel, the handle is rotationally arranged in the connecting hole in a sleeved mode and fixedly connected with the driving wheel, through the arrangement of the clamping rods, a clamping structure of a water pipe connector (a bolt pipe) is formed, and through a transmission structure of the driving wheel and the driven wheel, the water pipe connector (the bolt pipe) is clamped. The clamping rods can clamp the outer wall of the water pipe connector or extend into a water pipe to clamp a broken part, the clamping force can be continuously improved along with continuous rotation of the driving wheel until the water pipe connector or the broken part is driven to rotate, the water pipe cannot be abutted in the process, namely, internal threads of the water pipe cannot be damaged, and the dismounting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a wrench. Background Technology

[0002] A pipeline is a device formed by connecting pipes, pipe fittings, and valves to transport gases, liquids, or fluids containing solid particles. In daily life, with the long-term use of pipelines, maintenance is inevitable. A wrench is an indispensable tool in pipeline repair. A wrench is a commonly used installation and disassembly tool. It can be used to disassemble or adjust fastening nuts, valves, etc., at pipe connections for repair or replacement. For example, the utility model patent with authorization announcement number CN212601540U, entitled "Anti-slip High-Reliability Water Pipe Joint Wrench," includes an open-end wrench head and a handle connected to each other. The open-end wrench head has a wrench jaw at its center, which is used for contact with the water pipe joint. The edge of the wrench head has an opening that communicates with the wrench jaw. Opposite protrusions called limiting ends are located on both sides of the opening. The inner wall of the wrench jaw and the extension lines of the two limiting ends form a hexagon, creating five force points on the wrench jaw. By increasing the force points, slippage between the wrench and the water pipe joint is avoided during operation.

[0003] However, water pipes can rust over time, making it difficult to disassemble pipe connections. For example, the pipe fitting (bolted pipe) may be difficult to separate from the pipe. If the pipe fitting wrench is used to forcefully twist it, the pipe fitting (bolted pipe) may break off, leaving the broken part inside the pipe that is difficult to remove. This results in low disassembly efficiency. Even if traditional, forceful methods are used to clean the broken part, the internal threads of the pipe may be damaged, rendering the pipe unusable and increasing repair costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a wrench to solve the technical problem in the prior art where water pipes rust and the water pipe joint (bolt pipe) is easily broken when forcibly twisted, resulting in the broken part of the water pipe joint (bolt pipe) remaining in the water pipe and being difficult to clean.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a wrench, including a housing, a driving wheel, a driven wheel, and a handle. The housing has several circular holes on one side, evenly distributed around its circumference. A connecting hole is located at the center of the other side of the housing. The driving wheel is rotatably connected to the housing and coaxially arranged with the connecting hole. Several driven wheels are evenly distributed around the driving wheel and drively connected to it. Each driven wheel corresponds to one of the circular holes. A clamping rod is fixedly connected to one edge of each driven wheel, and these clamping rods are evenly distributed around the driving wheel. The handle is rotatably fitted into the connecting hole and fixedly connected to the driving wheel.

[0007] In some embodiments, the diameter of the driven wheel is larger than the diameter of the driving wheel.

[0008] In some embodiments, the housing is provided with a plurality of driven shafts, each driven shaft corresponding to a circular hole, and the driven wheel is rotatably sleeved on the driven shaft.

[0009] In some embodiments, a limiting block is fixedly connected to one end of the driven shaft, and the limiting block is located inside the circular hole.

[0010] In some embodiments, the inner diameter of the circular hole is equal to the root circle diameter of the driven wheel.

[0011] In some embodiments, the diameter of the end of the clamping rod away from the driven wheel is greater than the diameter of the other end of the clamping rod.

[0012] In some embodiments, the end of the clamping rod away from the driven wheel is provided with anti-slip texture.

[0013] In some embodiments, a protrusion is fixedly connected to one end of the drive wheel, and a limiting hole is provided on one side of the housing, wherein the protrusion is rotatably fitted into the limiting hole.

[0014] In some embodiments, one end of the handle is L-shaped and fixedly connected to one side of the drive wheel.

[0015] In some embodiments, the other end of the handle is fitted with an anti-slip rubber sleeve.

[0016] Compared with the prior art, the wrench provided by this utility model forms a clamping structure for water pipe joints (bolted pipes) through the setting of clamping rods. Then, through the transmission structure of the driving wheel and the driven wheel, each clamping rod can clamp the outer wall of the water pipe joint or extend into the water pipe to clamp the broken part. As the driving wheel continues to rotate, the clamping force will continuously increase until it drives the water pipe joint or the broken part to rotate. This process will not come into contact with the water pipe, that is, it will not damage the internal thread of the water pipe, and improves the disassembly efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a wrench provided in an embodiment of the present utility model. Figure 1 (Water pipe connector);

[0018] Figure 2 This is a schematic diagram of a wrench provided in an embodiment of the present utility model. Figure 2 (The broken part);

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure inside the middle shell;

[0020] Figure 4 yes Figure 2 A schematic diagram of the middle shell structure.

[0021] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Round hole; 12. Connecting hole; 13. Driven shaft; 14. Limiting block; 15. Limiting hole; 2. Driving wheel; 21. Protrusion; 3. Driven wheel; 31. Clamping rod; 4. Handle; 41. Anti-slip rubber sleeve; 5. Water pipe; 6. Water pipe connector; 7. Broken part. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0023] To address the technical problem of water pipes rusting and the easy breakage of pipe joints (bolt pipes) when forcibly twisted, resulting in broken parts of the pipe joints (bolt pipes) remaining inside the water pipe and being difficult to clean, this utility model provides a wrench that can quickly disassemble the broken parts remaining inside the water pipe.

[0024] It should be noted that the wrench described in this utility model is used for, but not limited to, water pipes, etc. For ease of explanation, this utility model only uses the application of a wrench to water pipes as an example for explanation. The principle of the wrench applied to other types of equipment is essentially the same as that applied to water pipes, and will not be described in detail here.

[0025] Please see Figures 1-4 ,in Figure 1This is a schematic diagram of the structure of a wrench according to an embodiment of the present invention. The wrench includes a housing 1, a driving wheel 2, a driven wheel 3, and a handle 4. A plurality of circular holes 11 are provided on one side of the housing 1, and the circular holes 11 are evenly distributed along the circumference of the housing 1. A connecting hole 12 is provided at the center of the other side of the housing 1. The driving wheel 2 is rotatably connected to the housing 1 and is coaxially arranged with the connecting hole 12. A plurality of driven wheels 3 are provided, and the driven wheels 3 are evenly distributed along the circumference of the driving wheel 2 and are connected to the driving wheel 2 for transmission. Each driven wheel 3 corresponds one-to-one with each circular hole 11. A clamping rod 31 is fixedly connected to one edge of each driven wheel 3, and the clamping rod 31 is evenly distributed along the circumference of the driving wheel 2. The handle 4 is rotatably sleeved in the connecting hole 12 and fixedly connected to the driving wheel 2.

[0026] In this embodiment, the clamping rods 31 form a clamping structure for the water pipe joint 6 (bolted pipe). Through the transmission structure of the driving wheel 2 and the driven wheel 3, each clamping rod 31 can clamp the outer wall of the water pipe joint 6 or extend into the water pipe 5 to clamp the broken part 7. As the driving wheel 2 continues to rotate, the clamping force will continuously increase until it drives the water pipe joint 6 or the broken part 7 to rotate. This process will not abut against the water pipe 5, that is, it will not damage the internal thread of the water pipe 5, and improves the disassembly efficiency.

[0027] To ensure that each clamping rod 31 can reach the broken part 7 of the water pipe joint 6 (bolted pipe) when the spacing is minimum, preferably, the pitch circle diameter of the drive wheel 2 is 30mm-40mm, so that the device is suitable for water pipes 5 with a size of DN50 (2-inch pipe) and above.

[0028] In one embodiment, the driven wheel 3 has a larger diameter than the driving wheel 2.

[0029] In this embodiment, preferably, the diameter of the drive wheel 2 is smaller than the diameter of the water pipe 5, so that when each clamping rod 31 is closest to each other, it can insert into the broken part 7 of the water pipe joint 6 (bolted pipe), and then clamp the broken part 7 from the inside out until it drives the broken part 7 to rotate together and be taken out from the water pipe 5.

[0030] In one embodiment, the housing 1 is provided with a plurality of driven shafts 13, each driven shaft 13 corresponding to a circular hole 11, and the driven wheel 3 is rotatably sleeved on the driven shaft 13.

[0031] In this embodiment, the driven shaft 13 is used to limit the position of the driven wheel 3 so that the driven wheel 3 is always driven by the driving wheel 2 and rotates along the driven shaft 13, thereby realizing the distance adjustment between each clamping rod 31, which is applicable to the water pipe joint 6 (bolted pipe) or the broken part 7 of the water pipe joint 6 (bolted pipe).

[0032] In one embodiment, a limiting block 14 is fixedly connected to one end of the driven shaft 13, and the limiting block 14 is located inside the circular hole 11.

[0033] In this embodiment, the function of the limiting block 14 is to further restrict the driven wheel 3 and prevent the driven wheel 3 from shifting along the length direction of the driven shaft 13, thus affecting the clamping effect.

[0034] In one embodiment, the inner diameter of the circular hole 11 is equal to the root circle diameter of the driven wheel 3.

[0035] In this embodiment, the distance between the tooth tip and tooth root of the driven wheel 3 can be abutted by the housing 1, which, together with the driven shaft 13 and the limiting block 14, achieves the purpose of limiting the driven wheel 3, ensuring that the driven wheel 3 will never be misaligned during rotation.

[0036] In one embodiment, the diameter of the end of the clamping rod 31 away from the driven wheel 3 is larger than the diameter of the other end of the clamping rod 31.

[0037] In this embodiment, the end of the clamping rod 31 is used to abut against the water pipe connector 6 (bolted pipe) or the broken part 7 of the water pipe connector 6 (bolted pipe).

[0038] In one embodiment, the end of the clamping rod 31 away from the driven wheel 3 is provided with anti-slip texture.

[0039] In this embodiment, the anti-slip texture increases friction and prevents the clamping rod 31 from slipping when clamping the water pipe joint 6 (bolted pipe) or the broken part 7 of the water pipe joint 6 (bolted pipe).

[0040] In one embodiment, a protrusion 21 is fixedly connected to one end of the drive wheel 2, and a limiting hole 15 is opened on one side of the housing 1, and the protrusion 21 is rotatably embedded in the limiting hole 15.

[0041] In this embodiment, the protrusion 21 and the limiting hole 15 make the drive wheel 2 more stable when it is twisted by the handle 4.

[0042] In one embodiment, one end of the handle 4 is L-shaped and fixedly connected to one side of the drive wheel 2.

[0043] In this embodiment, it is convenient for staff to apply force through handle 4.

[0044] In one embodiment, the other end of the handle 4 is fitted with an anti-slip rubber sleeve 41.

[0045] In this embodiment, the operator's hands are prevented from slipping during the twisting process.

[0046] To better understand this utility model, the following is combined with... Figures 1 to 4The technical solution of this utility model is described in detail below:

[0047] When water pipe joint 6 (bolted pipe) is rusted (see...) Figure 1 The worker holds the housing 1 with one hand and the handle 4 with the other, twisting it in the direction of clamping the water pipe joint 6 (bolted pipe) to the outer wall. Under the action of the rotation of the driving wheel 2, each driven wheel 3 is driven to rotate until the ends of each clamping rod 31 clamp the outer wall of the water pipe joint 6 (bolted pipe). Then, one hand holds the water pipe 5 and the other hand continues to twist the handle 4 in the same direction. Utilizing the transmission structure of the driving wheel 2 and the driven wheel 3, the water pipe joint 6 (bolted pipe) is clamped tighter and tighter until the water pipe joint 6 (bolted pipe) is twisted, completing the disassembly.

[0048] However, if pipe fitting 6 (bolted pipe) breaks (see...) Figure 2 Then, hold the housing 1 with one hand and the handle 4 with the other hand and twist it so that each clamping rod 31 can be inserted into the broken part 7. Then, hold the water pipe 5 with one hand and the handle 4 with the other hand and twist it in the direction of clamping the broken part 7. Using the transmission structure of the driving wheel 2 and the driven wheel 3, the broken part 7 is clamped tighter and tighter until the broken part 7 is twisted and removed, thus completing the disassembly.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A wrench, characterized in that, include: The housing has several circular holes on one side, and the circular holes are evenly distributed along the circumference of the housing. A connecting hole is provided at the center of the other side of the housing. A drive wheel, which is rotatably connected inside the housing and coaxially arranged with the connecting hole; Driven wheels, comprising a plurality of driven wheels, are evenly distributed along the circumference of the driving wheel and are connected to the driving wheel in a driving transmission manner. Each driven wheel corresponds one-to-one with each of the circular holes. A clamping rod is fixedly connected to one edge of each driven wheel, and the clamping rods are evenly distributed along the circumference of the driving wheel; and A handle is rotatably fitted into the connecting hole and fixedly connected to the drive wheel.

2. A wrench according to claim 1, characterized in that, The diameter of the driven wheel is larger than the diameter of the driving wheel.

3. A wrench according to claim 1, characterized in that, The housing contains a plurality of driven shafts, each driven shaft corresponding to a circular hole, and the driven wheel is rotatably mounted on the driven shaft.

4. A wrench according to claim 3, characterized in that, One end of the driven shaft is fixedly connected to a limiting block, and the limiting block is located inside the circular hole.

5. A wrench according to claim 1, characterized in that, The inner diameter of the circular hole is equal to the root circle diameter of the driven wheel.

6. A wrench according to claim 1, characterized in that, The diameter of the end of the clamp rod away from the driven wheel is larger than the diameter of the other end of the clamp rod.

7. A wrench according to claim 1, characterized in that, The end of the clamp rod away from the driven wheel has anti-slip texture.

8. A wrench according to claim 1, characterized in that, One end of the drive wheel is fixedly connected to a protrusion, and a limiting hole is opened on one side of the housing. The protrusion is rotatably embedded in the limiting hole.

9. A wrench according to claim 1, characterized in that, One end of the handle is L-shaped and fixedly connected to one side of the drive wheel.

10. A wrench according to claim 9, characterized in that, The other end of the handle is fitted with an anti-slip rubber sleeve.

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