A pipe wrench with self-locking anti-detachment function

Abstract

This utility model provides a pipe wrench with a self-locking anti-loosening function, relating to the field of pipe wrench technology. It includes: a handle, a fixed clamp head fixedly connected to the top of the handle, a mounting base fixedly installed on the outside of the handle near the top, a screw slidably connected inside the mounting base, and a movable clamp head fixedly connected to the top of the screw. This type of pipe wrench rigidly fixes the screw through a locking mechanism, preventing slight rotation or displacement of the screw during operation. When a rotational torque is applied, the torque reaction force cannot loosen the screw, eliminating the need for secondary adjustments. This allows the operator to continuously and efficiently complete pipe clamping and rotation operations without interrupting the work process, significantly shortening the overall operation time and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe wrench technology, specifically a pipe wrench with a self-locking and anti-detachment function. Background Technology

[0002] In industrial and civilian applications such as pipeline installation, repair, and equipment maintenance, pipe wrenches are manual tools used to clamp and rotate pipes and fittings. Their performance directly affects work efficiency, operational safety, and workpiece integrity. They are an indispensable basic tool in various construction and maintenance operations. Most mainstream pipe wrench products on the market today work on the principle of clamping pipe fittings by the relative movement of fixed and movable jaws. The jaw spacing is adjusted by a screw or worm gear structure to accommodate pipe fittings of different specifications.

[0003] However, during the use of pipe wrenches, the screw, as the core component for adjusting the jaw spacing and clamping pipe fittings, directly determines the tool's operating efficiency and user experience due to its positional stability. Traditional pipe wrenches generally lack an effective locking structure for the screw, causing it to move unexpectedly due to external vibrations, torque transmission, or accidental hand contact during actual operation. This leads to changes in the jaw spacing, forcing operators to pause work and readjust the jaw position. This secondary adjustment problem has become a key bottleneck restricting the operating efficiency of traditional pipe wrenches.

[0004] After the traditional pipe wrench has completed the initial clamping of the jaws, if a rotational torque needs to be applied to the pipe fitting, the reaction force generated during the torque transmission process can easily cause the screw to rotate slightly. In addition, in scenarios such as working at heights or in confined spaces, if the operator accidentally touches the screw adjustment end, it may cause the screw to shift. Once the screw moves, the jaw spacing that was originally adapted to the pipe fitting will increase or decrease accordingly. If the spacing increases, the clamping force of the jaws will decrease, making it impossible to effectively transmit torque, or even causing slippage. Utility Model Content

[0005] The purpose of this application is to provide a pipe wrench with a self-locking anti-detachment function to solve the technical problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide a pipe wrench with a self-locking anti-detachment function, comprising: a handle, a fixed wrench head fixedly connected to the top of the handle, an installation base fixedly installed on the outside of the handle near the top, a screw slidably connected inside the installation base, and a movable wrench head fixedly connected to the top of the screw;

[0007] A locking mechanism, which is disposed on the mounting base, is used to lock the screw. The locking mechanism includes: a moving groove, a moving plate, a locking block, and a spring.

[0008] Furthermore, the mounting base has a movable groove inside, and a movable plate is provided inside the movable groove near the screw. Multiple matching locking blocks are fixedly connected to the side of the movable plate facing the screw, and a spring connects the movable plate to the side opposite to the movable groove.

[0009] Furthermore, a connecting plate is provided on the side of the movable slot away from the movable plate, and multiple connecting rods connect the connecting plate to the movable plate.

[0010] Furthermore, the movable groove has a through groove that communicates with the outside at one end near the connecting plate, and a button is fixedly connected to one side of the movable groove, with one end of the button extending to the outside through the through groove.

[0011] Furthermore, the mounting base is provided with a threaded sleeve, and the screw is threadedly connected to the inside of the threaded sleeve.

[0012] Furthermore, guide grooves are respectively provided on opposite sides of the screw, and a guide block that cooperates with the guide groove is fixedly connected to the inner wall of the mounting base, and the guide block is located in the guide groove.

[0013] Furthermore, anti-slip grooves are respectively provided on the opposite side of the fixed pliers head and the movable pliers head, and rubber hand guards are fixedly installed on the pliers handle.

[0014] The beneficial effects of this utility model are:

[0015] The advantages of this invention are that the locking mechanism rigidly fixes the screw, preventing slight rotation or displacement of the screw during operation. When a rotational torque is applied, the torque reaction force cannot loosen the screw, eliminating the need for secondary adjustments. This allows operators to complete the clamping and rotation of pipe fittings continuously and efficiently without interrupting the work process, significantly shortening the overall operation time and improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0019] Figure 3This is a schematic diagram of the screw structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the mounting base structure of this utility model.

[0021] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0022] The following are the labeling elements in the figure:

[0023] 1. Pliers handle; 11. Fixed pliers head; 12. Mounting base; 13. Screw; 14. Movable pliers head; 15. Screw sleeve; 16. Guide groove; 17. Guide block; 18. Anti-slip groove; 19. Rubber hand guard; 2. Moving groove; 21. Moving plate; 22. Locking block; 23. Spring; 24. Connecting plate; 25. Connecting rod; 26. Button. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] As attached Figure 1 and Figure 2 The pipe wrench shown includes: a handle 1, a fixed clamp head 11 fixedly connected to the top of the handle 1, a mounting base 12 fixedly installed on the outside of the handle 1 near the top, a screw 13 slidably connected inside the mounting base 12, and a movable clamp head 14 fixedly connected to the top of the screw 13; and a locking mechanism, which is provided on the mounting base 12 and is used to lock the screw 13.

[0027] Specifically: When in use, adjust the height of the screw 13 to adjust the distance between the fixed clamp head 11 and the movable clamp head 14, so that the fixed clamp head 11 and the movable clamp head 14 clamp the pipe. Then, fix the screw 13 by the locking mechanism to prevent the screw 13 from moving and requiring secondary adjustment.

[0028] As attached Figure 3 , Figure 4 and Figure 5The locking mechanism shown includes: a movable groove 2, a movable plate 21, a locking block 22, and a spring 23. The movable groove 2 is provided inside the mounting base 12. The movable plate 21 is provided inside the movable groove 2 near the screw 13. Multiple locking blocks 22 are fixedly connected to the side of the movable plate 21 facing the screw 13. A spring 23 is connected between the movable plate 21 and the opposite side of the movable groove 2. A connecting plate 24 is provided inside the movable groove 2 away from the movable plate 21. Multiple connecting rods 25 are connected between the connecting plate 24 and the movable plate 21. A through groove communicating with the outside is provided at the end of the movable groove 2 near the connecting plate 24. A button 26 is fixedly connected to one side of the movable groove 2. One end of the button 26 extends to the outside through the through groove.

[0029] Specifically: When adjusting the height of screw 13, pressing button 26 pushes connecting plate 24 into moving groove 2. This, in turn, pushes moving plate 21 via connecting rod 25, causing moving plate 21 to move along with it. Moving plate 21 then moves locking block 22 out of the groove on screw 13. Simultaneously, moving plate 21 compresses spring 23, causing spring 23 to contract and store energy, thus releasing the screw 13 from its fixation. The height of screw 13 is then adjusted. After adjustment, button 26 is released, spring 23 releases its elasticity, pushing moving plate 21 to one side of screw 13, causing locking block 22 to engage in the groove on screw 13. Connecting rod 25 then pushes connecting plate 24, causing button 26 to be ejected from the groove and return to its original position, thereby fixing screw 13 to prevent movement.

[0030] In a preferred embodiment, the mounting base 12 is provided with a screw sleeve 15, and the screw 13 is threadedly connected to the inside of the screw sleeve 15. The screw 13 has guide grooves 16 on opposite sides. A guide block 17 that cooperates with the guide groove 16 is fixedly connected to the inner wall of the mounting base 12. The guide block 17 is located in the guide groove 16.

[0031] Furthermore, rotating the screw sleeve 15 engages with the screw rod 13, thereby driving the screw rod 13 to move, thus adjusting the height of the screw rod 13. When the screw rod 13 moves, the guide groove 16 moves along the outside of the guide block 17, so that the screw rod 13 can only move along the direction of the guide groove 16.

[0032] In a preferred embodiment, anti-slip grooves 18 are respectively provided on the opposite side of the fixed pliers head 11 and the movable pliers head 14, and rubber hand guards 19 are fixedly installed on the pliers handle 1.

[0033] Furthermore, the rubber hand guard 19 can protect the hand and prevent the hand from slipping, and the anti-slip groove 18 design can increase the friction with the pipe, making the pipe clamping more stable.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe wrench with self-locking anti-loosening function, characterized in that, include: A plier handle (1) is fixedly connected to a fixed plier head (11) at the top end of the plier handle (1). A mounting base (12) is fixedly installed on the outside of the plier handle (1) near the top position. A screw (13) is slidably connected inside the mounting base (12). A movable plier head (14) is fixedly connected to the top end of the screw (13). A locking mechanism is provided on the mounting base (12) for locking the screw (13). The locking mechanism includes a moving groove (2), a moving plate (21), a locking block (22), and a spring (23).

2. The pipe wrench with self-locking anti-detachment function according to claim 1, characterized in that, The mounting base (12) has a movable groove (2) inside. A movable plate (21) is provided inside the movable groove (2) near the screw (13). A plurality of matching clips (22) are fixedly connected to the side of the movable plate (21) facing the screw (13). A spring (23) is connected between the movable plate (21) and the side opposite to the movable groove (2).

3. The pipe wrench with self-locking anti-off function according to claim 2, characterized in that, A connecting plate (24) is provided on the side of the movable slot (2) away from the movable plate (21), and a plurality of connecting rods (25) are connected between the connecting plate (24) and the movable plate (21).

4. The pipe wrench with self-locking anti-off function according to claim 3, characterized in that, The movable slot (2) has a through slot that communicates with the outside at one end near the connecting plate (24). A button (26) is fixedly connected to one side of the movable slot (2), and one end of the button (26) extends to the outside through the through slot.

5. The pipe wrench with self-locking anti-off function according to claim 1, characterized in that, The mounting base (12) is provided with a screw sleeve (15), and the screw (13) is threaded into the inside of the screw sleeve (15).

6. The pipe wrench with self-locking anti-off function according to claim 1, characterized in that, The screw (13) has guide grooves (16) on both sides. The inner wall of the mounting base (12) is fixedly connected to a guide block (17) that cooperates with the guide groove (16). The guide block (17) is located in the guide groove (16).

7. The pipe wrench with self-locking anti-detachment function according to claim 1, characterized in that, The fixed pliers (11) and the movable pliers (14) are respectively provided with anti-slip grooves (18) on opposite sides, and a rubber hand guard (19) is fixedly installed on the pliers handle (1).

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