Portable light pipe wrench capable of rapidly adjusting opening

Abstract

The invention relates to the technical field of hardware tools, in particular to a portable light pipe wrench capable of quickly adjusting an opening, which comprises a wrench handle provided with adjusting teeth; an upper clamp body; the sliding seat slidably sleeves the periphery of the forceps handle, a mounting groove is formed in one end, far away from the forceps handle, of the sliding seat, and an opening adjusting mechanism is mounted in the mounting groove; the lower clamp seat is fixedly mounted on the top surface of the sliding seat, a pushing structure is arranged at the top end of the lower clamp seat and is in transmission connection with a mounting seat, and a lower clamp body is fixedly mounted on the mounting seat; the adjusting component is fixedly arranged in the middle of the side surface of the clamp handle; the clamping force can be accurately controlled through the adjusting assembly and the pushing structure, the adaptive force can be matched according to the material and thickness of the pipe fitting, the workpiece damage risk is reduced, and the operation precision is improved.

Description

Technical Field

[0001] This invention relates to the field of hardware tools technology, specifically a portable, lightweight pipe wrench with a quick-adjustable opening. Background Technology

[0002] Pipe wrenches are specialized tools used in the hardware industry for clamping and rotating pipe fittings or cylindrical workpieces. They fix the workpiece by means of the friction between the wrench body and the workpiece. They are widely used in mechanical maintenance, equipment installation and other scenarios, and can tighten or disassemble pipe fittings of different materials such as metal pipes and plastic composite pipes.

[0003] Existing pipe wrenches are mainly divided into two categories: fixed open-jaw pipe wrenches and adjustable open-jaw pipe wrenches. Fixed open-jaw pipe wrenches have a fixed jaw size, only suitable for a single type of pipe fitting, resulting in poor versatility. Adjustable open-jaw pipe wrenches typically adjust the jaw size through a screw, rack, or clip structure, such as the common worm gear rack pipe wrench, where rotating the worm moves the rack, thus changing the jaw opening width. However, existing adjustable open-jaw pipe wrenches still have the following shortcomings in practical use: Existing pipe wrenches rely on the operator's feel to control the clamping force. If the clamping is too loose, it can cause the pipe to slip, damage the workpiece surface, or affect the accuracy of the operation. If the clamping is too tight, it may cause the pipe to deform, especially for plastic pipes or thin-walled metal pipes. Furthermore, it is impossible to match the appropriate clamping force according to the pipe material, thickness, and other parameters, which limits the applicable scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a portable, lightweight pipe wrench with a quick-adjusting opening to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: A portable, lightweight pipe wrench with quick-adjusting opening, comprising: The pliers handle has an adjustment tooth on one side near the front. The upper clamp body is fixedly installed at the front end of the clamp handle; A sliding base is slidably sleeved around the periphery of the pliers handle. The end of the sliding base away from the pliers handle has an installation groove, in which an opening adjustment mechanism is installed. A lower clamp seat is fixedly installed on the top surface of the slide at the end away from the clamp handle. The top of the lower clamp seat is provided with a push structure. The push structure is drivenly connected to a mounting base. A lower clamp body that cooperates with the upper clamp body is fixedly installed on the mounting base. And an adjustment assembly fixedly installed at the middle of the side of the pliers handle, the adjustment assembly being used to drive the propulsion structure to control the mounting seat to drive the lower pliers body to adjust the distance between the mounting seat and the lower pliers seat.

[0006] Furthermore, the propulsion structure includes a cylindrical cavity at the center of the top of the lower clamp seat and four guide grooves at the top of the lower clamp seat, the four guide grooves being rectangularly distributed with the cylindrical cavity as the center. A piston is slidably installed in the cylindrical cavity. A support rod is fixedly connected to the top of the piston. The top of the support rod slides through the top of the cylindrical cavity to the top of the lower clamp seat and is fixedly connected to the mounting seat. A flow channel is provided in the lower clamp seat through the bottom of the cylindrical cavity. The end of the flow channel away from the cylindrical cavity communicates with the outside of the lower clamp seat and is fixedly installed with a pipe joint. The bottom surface of the mounting base is fixedly connected to four guide rods, and the bottom ends of the four guide rods are slidably inserted into four guide grooves respectively.

[0007] Furthermore, the adjustment assembly includes a hollow column fixedly mounted on the middle position of the side of the pliers handle via a limiting seat, the hollow column being made of a transparent material; One end of the hollow column is fixedly installed with a pipe joint two, and a flexible oil pipe is connected between the pipe joint two and the pipe joint. The other end of the hollow column is threaded with a screw rod, and one end of the screw rod located in the hollow column is rotatably connected to a piston two. The other end of the screw rod is fixedly installed with a knob. The hollow column has clamping force scales on its outer perimeter.

[0008] Furthermore, the slide block has a sliding groove, and the slide block is sleeved on the periphery of the clamp handle through the sliding groove, and the mounting groove and the sliding groove are connected. Limiting grooves are provided on both the top and bottom surfaces of the mounting groove.

[0009] Furthermore, the opening adjustment mechanism includes a worm gear disposed in the mounting groove, and a coaxial optical axis is fixedly installed through the worm gear, with the top and bottom ends of the optical axis slidably locked in the corresponding limiting grooves. It also includes an elastic abutment structure disposed in the limiting groove. The elastic abutment structure contacts the optical axis. In the initial state, the elastic support structure abuts the optical axis, causing the worm and the adjusting tooth to be in a meshing state.

[0010] Furthermore, the elastic support structure includes a limiting shaft, and the limiting shaft is fixedly connected between the two sides of the limiting groove at the end away from the clamp handle. A spring arranged parallel to the limiting groove is fixedly connected to the periphery of the limiting shaft, and the end of the spring away from the limiting shaft is fixedly connected to the periphery of the optical axis.

[0011] The beneficial effects of this invention are: 1. This invention, through the adjustment of the hollow column of the component, the clamping force scale and the hydraulic transmission structure, allows the operator to observe the position of the piston through the transparent hollow column, and accurately judge the clamping force by combining the clamping force scale. The appropriate force can be matched according to the material and thickness of the pipe, reducing the risk of workpiece damage and improving the accuracy of operation.

[0012] 2. The opening adjustment mechanism of the present invention achieves switching between rapid adjustment and precise adjustment through the cooperation of spring and worm: in the rapid adjustment stage, the slide can slide quickly along the handle, which greatly shortens the opening adjustment time of large-specification pipe fittings; in the precise adjustment stage, fine adjustment is achieved through the meshing transmission of worm and adjusting teeth to ensure perfect fit between the jaws and the pipe fittings.

[0013] 3. During the rapid adjustment phase, separation can be achieved simply by applying external force to the worm gear, without the need for additional tools; the clamping force is adjusted by turning a knob, making operation simple and effortless. Simultaneously, the opening can be adjusted in both "quick" and "precise" modes to accommodate different pipe sizes, and the clamping force can be adjusted according to the pipe material, making it suitable for various scenarios. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Enlarged view of section A; Figure 3 yes Figure 1 Enlarged view of section B; Figure 4 yes Figure 1 Enlarged view of section C; Figure 5 This is a three-dimensional schematic diagram of the slide block in this invention; The attached figures are labeled as follows: 1-Pliers handle, 2-Adjusting tooth, 3-Upper clamp body, 4-Slide seat, 5-Lower clamp seat, 6-Flexible oil pipe, 7-Slide groove, 8-Mounting groove, 9-Limiting groove, 10-Flow channel, 11-Pipe connector one, 12-Mounting seat, 13-Lower clamp body, 14-Guide rod, 15-Guide groove, 16-Support rod, 17-Cylindrical cavity, 18-Piston one, 19-Pipe connector two, 20-Hollow column, 21-Limiting seat, 22-Clamping force scale, 23-Piston two, 24-Screw, 25-Knob, 26-Worm gear, 27-Limiting shaft, 28-Spring, 29-Optical shaft. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1: Please see Figure 1 and Figure 5 In this embodiment of the invention, a portable, lightweight pipe wrench with a quick-adjusting opening includes: The clamp handle 1 has an adjustment tooth 2 on one side near the front. The upper clamp body 3 is fixedly installed at the front end of the clamp handle 1; A sliding base 4 is slidably sleeved around the periphery of the clamp handle 1. An installation groove 8 is provided at the end of the sliding base 4 away from the clamp handle 1, and an opening adjustment mechanism is installed in the installation groove 8. A lower clamp seat 5 is fixedly installed on the top surface of the slide 4 at the end away from the clamp handle 1. The top of the lower clamp seat 5 is provided with a push structure. The push structure is connected to the mounting base 12. A lower clamp body 13 that works with the upper clamp body 3 is fixedly installed on the mounting base 12. And an adjustment component fixedly installed at the middle of the side of the clamp handle 1. The adjustment component is used to drive the propulsion structure to control the mounting base 12 to drive the lower clamp body 13 to adjust the distance between the mounting base 12 and the lower clamp seat 5.

[0017] When using this invention, the initial position is first adjusted by sliding the slide block 4 along the clamp handle 1. The slide block 4 drives the associated lower clamp 5 to move, thereby changing the initial opening formed by the upper clamp body 3 and the lower clamp body 13 to adapt to different specifications of pipe fittings. After the initial opening is initially aligned with the pipe fitting, the clamping force of the opening is adjusted by adjusting the push structure on the lower clamp 5.

[0018] Example 2: Please see Figures 1-3 and Figure 5 Based on embodiment 1, the propulsion structure includes a cylindrical cavity 17 opened at the center of the top of the lower clamp seat 5 and four guide grooves 15 opened at the top of the lower clamp seat 5. The four guide grooves 15 are rectangularly distributed with the cylindrical cavity 17 as the center. A piston 18 is slidably installed in the cylindrical cavity 17. A support rod 16 is fixedly connected to the top of the piston 18. The top of the support rod 16 slides through the top of the cylindrical cavity 17 to the top of the lower clamp seat 5 and is fixedly connected to the mounting base 12. A flow channel 10 is provided in the lower clamp seat 5 and is connected through the bottom of the cylindrical cavity 17. The end of the flow channel 10 away from the cylindrical cavity 17 communicates with the outside of the lower clamp seat 5 and is fixedly installed with a pipe joint 11. The bottom surface of the mounting base 12 is fixedly connected to four guide rods 14, and the bottom ends of the four guide rods 14 are slidably inserted into four guide grooves 15 respectively.

[0019] The adjustment component includes a hollow column 20 fixedly installed at the middle position of the side of the clamp handle 1 by a limiting seat 21. The hollow column 20 is made of transparent material. A pipe joint 29 is fixedly installed through one end of the hollow column 20. A flexible oil pipe 6 is connected between the pipe joint 29 and the pipe joint 11. A screw 24 is threaded through the other end of the hollow column 20. A piston 23 is rotatably connected to one end of the screw 24 located in the hollow column 20. A knob 25 is fixedly installed at the other end of the screw 24. The hollow column 20 has a clamping force scale 22 on its outer periphery.

[0020] In use, turning knob 25 rotates screw 24, and the threaded engagement between screw 24 and hollow column 20 causes piston 23 to slide along the inner wall of hollow column 20. When piston 23 moves toward pipe joint 19, hydraulic oil in hollow column 20 is injected into cylindrical cavity 17 through flexible oil pipe 6 and flow channel 10, pushing piston 18 upward. Support rod 16 drives mounting seat 12 and lower clamp 13 closer to upper clamp 3, increasing clamping force. When piston 23 moves away from pipe joint 19, hydraulic oil in cylindrical cavity 17 flows back, piston 18 moves downward, and clamping force decreases. At the same time, guide rod 14 slides along guide groove 15 to ensure no deviation during mounting seat 12 movement. Hollow column 20 is made of transparent material, and operators can accurately judge the current clamping force by observing the alignment of piston 23 with clamping force scale 22.

[0021] It is important to note that when the opening adjustment is complete, the lower clamp 13 and the upper clamp 3 should be in contact with the pipe fitting. At this time, the piston 18 is in the middle position in the cylindrical cavity 17, so there is an initial gap between the mounting seat 12 and the lower clamp seat 5. At the same time, the piston 23 is also in the middle position in the hollow column 20, and the piston 23 is aligned with the zero mark of the clamping force scale 22. When the single force application rotation ends, the screw 24 is rotated in the opposite direction by the knob 25, so that the mounting seat 12 contacts the lower clamp seat 5. At this time, the opening of the lower clamp 13 and the upper clamp 3 is larger than the pipe fitting, which can quickly return the clamp to the initial force application position without disengaging from the pipe fitting. Then, the piston 23 is returned to the clamping force scale 22 position, and the lower clamp 13 clamps the pipe fitting again with the same clamping force, thereby achieving continuous operation.

[0022] In this embodiment, hydraulic transmission is used to adjust the clamping force. Compared with traditional mechanical transmission, the force transmission is more stable, avoiding damage to the pipe caused by sudden increases or decreases in clamping force. The clamping force scale 22 works in conjunction with the transparent hollow column 20 to achieve visualization and precise adjustment of the clamping force. The appropriate force can be matched according to the material and thickness of the pipe, reducing the risk of workpiece damage. The threaded connection between the screw 24 and the hollow column 20 has self-locking properties. After adjustment, the position of the piston 23 is fixed, which can prevent the clamping force from loosening during operation and improve the safety and stability of operation.

[0023] Example 3: Please see Figure 1 , Figure 4 and Figure 5 Based on embodiment 1, the slide block 4 is provided with a sliding groove 7, and the slide block 4 is sleeved on the periphery of the clamp handle 1 through the sliding groove 7, and the mounting groove 8 is connected to the sliding groove 7. Limiting grooves 9 are provided on both the top and bottom surfaces of the mounting groove 8.

[0024] The opening adjustment mechanism includes a worm gear 26 installed in the mounting groove 8, and a coaxial optical axis 29 is fixedly installed through the worm gear 26. The top and bottom ends of the optical axis 29 are respectively slidably locked in the corresponding limiting grooves 9. It also includes an elastic abutment structure set in the limiting groove 9. The elastic abutment structure contacts the optical axis 29. In the initial state, the elastic support structure abuts the optical axis 29, causing the worm 26 and the adjusting tooth 2 to be in a meshing state.

[0025] The elastic support structure includes a limiting shaft 27. The limiting shaft 27 is fixedly connected between the two sides of the limiting groove 9 at the end away from the clamp handle 1. A spring 28 is fixedly connected to the periphery of the limiting shaft 27 and is arranged parallel to the limiting groove 9. The end of the spring 28 away from the limiting shaft 27 is fixedly connected to the periphery of the optical axis 29.

[0026] Adjusting the opening involves two steps: quick adjustment and precise adjustment. During the rapid adjustment phase, an external force away from the clamp handle 1 is applied to the worm 26, causing the optical axis 29 to slide along the limiting groove 9 toward the limiting shaft 27. The spring 28 is compressed, and the worm 26 separates from the adjusting tooth 2. At this time, the slide 4 can slide rapidly along the clamp handle 1 to achieve a wide range of rapid adjustment of the opening. After the rapid adjustment is completed, the worm 26 is released, the spring 28 recovers its elasticity, and pushes the optical axis 29 and the worm 26 to reset. The worm 26 re-engages with the adjusting tooth 2, and the position of the slide 4 is fixed. During the precise adjustment stage, the worm 26 is rotated, and the meshing transmission between the worm 26 and the adjusting gear 2 drives the slide 4 to move slowly, thereby achieving precise calibration of the opening.

[0027] When dealing with large-sized pipe fittings, this invention can quickly adjust the opening to near the size, saving adjustment time; during the precise adjustment stage, the meshing transmission between the worm gear 26 and the adjusting gear 2 is used to achieve fine adjustment, improve the fitting accuracy, and avoid the shortcomings of traditional pipe wrenches with large adjustment errors. The elastic contact structure formed by the spring 28 ensures that the worm 26 and the adjusting tooth 2 are stably engaged in the initial state, preventing the slide 4 from sliding on its own and improving the reliability of the structure; at the same time, the operation of external force driving the worm 26 to separate is simple.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A portable, lightweight pipe wrench with quick-adjusting opening, characterized in that, include: The clamp handle (1) has an adjustment tooth (2) on one side near the front. The upper clamp body (3) is fixedly installed at the front end of the clamp handle (1); A sliding seat (4) is slidably sleeved around the pliers handle (1). The end of the sliding seat (4) away from the pliers handle (1) is provided with an installation groove (8). An opening adjustment mechanism is installed in the installation groove (8). A lower clamp seat (5) is fixedly installed on the top surface of the slide (4) at one end away from the clamp handle (1). The top of the lower clamp seat (5) is provided with a push structure. The push structure is connected to a mounting seat (12). A lower clamp body (13) that cooperates with the upper clamp body (3) is fixedly installed on the mounting seat (12). And an adjustment assembly fixedly installed at the middle of the side of the pliers handle (1), the adjustment assembly being used to drive the propulsion structure to control the mounting seat (12) to drive the lower pliers body (13) to adjust the distance between the mounting seat (12) and the lower pliers seat (5).

2. The portable, lightweight pipe wrench with quick-adjusting opening as described in claim 1, characterized in that, The propulsion structure includes a cylindrical cavity (17) located at the center of the top of the lower clamp (5) and four guide grooves (15) located at the top of the lower clamp (5). The four guide grooves (15) are rectangularly distributed with the cylindrical cavity (17) as the center. A piston (18) is slidably installed in the cylindrical cavity (17). A support rod (16) is fixedly connected to the top of the piston (18). The top of the support rod (16) slides through the top of the cylindrical cavity (17) to the top of the lower clamp seat (5) and is then fixedly connected to the mounting seat (12). A flow channel (10) is provided in the lower clamp seat (5) through the bottom end of the cylindrical cavity (17). The end of the flow channel (10) away from the cylindrical cavity (17) communicates with the outside of the lower clamp seat (5) and is fixedly installed with a pipe joint (11). The bottom surface of the mounting base (12) is fixedly connected with four guide rods (14), and the bottom ends of the four guide rods (14) are slidably inserted into the four guide grooves (15).

3. A portable, lightweight pipe wrench with quick-adjusting opening as described in claim 2, characterized in that, The adjustment assembly includes a hollow column (20) fixedly mounted on the middle of the side of the pliers (1) via a limiting seat (21), the hollow column (20) being made of a transparent material; One end of the hollow column (20) is fixedly installed with a pipe joint two (19), and a flexible oil pipe (6) is connected between the pipe joint two (19) and the pipe joint (11). The other end of the hollow column (20) is threaded with a screw (24), and one end of the screw (24) located in the hollow column (20) is rotatably connected with a piston two (23). The other end of the screw (24) is fixedly installed with a knob (25). The hollow column (20) is provided with a clamping force scale (22) on its outer periphery.

4. A portable, lightweight pipe wrench with quick-adjusting opening as described in claim 1, characterized in that, The slide block (4) has a slide groove (7), and the slide block (4) is fitted around the plier handle (1) through the slide groove (7). The mounting groove (8) and the slide groove (7) are connected. Limiting grooves (9) are provided on both the top and bottom surfaces of the mounting groove (8).

5. A portable, lightweight pipe wrench with quick-adjusting opening according to claim 4, characterized in that, The opening adjustment mechanism includes a worm gear (26) disposed in the mounting groove (8), and a coaxial optical axis (29) is fixedly installed through the worm gear (26). The top and bottom ends of the optical axis (29) are respectively slidably locked in the corresponding limiting grooves (9). It also includes an elastic abutment structure disposed in the limiting groove (9), the elastic abutment structure being in contact with the optical axis (29). In the initial state, the elastic support structure abuts the optical axis (29) to make the worm (26) and the adjusting tooth (2) mesh.

6. A portable, lightweight pipe wrench with quick-adjusting opening according to claim 5, characterized in that, The elastic support structure includes a limiting shaft (27). The limiting shaft (27) is fixedly connected between the two sides of the limiting groove (9) at the end away from the clamp handle (1). A spring (28) is fixedly connected to the periphery of the limiting shaft (27) and is arranged parallel to the limiting groove (9). The end of the spring (28) away from the limiting shaft (27) is fixedly connected to the periphery of the optical axis (29).

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