Self-tightening pipe wrench wrench

Abstract

The utility model discloses a self-tightening pipe wrench wrench which comprises a fixed wrench body and a movable wrench head, a fixed connecting plate body is arranged in the middle of the fixed wrench body, an adjusting spiral ring is arranged in the middle of the fixed connecting plate body, a threaded rod is arranged on one side of the movable wrench head, and the threaded rod penetrates through the adjusting spiral ring in a penetrating mode and is matched with the adjusting spiral ring. Arc-shaped grooves are formed in the top end of the fixed clamp body and the bottom end of the movable clamp head, grooves are formed in the two ends of each arc-shaped groove, one-way rotating rollers are arranged in the grooves, rotating shafts are arranged at the axes of the one-way rotating rollers in a penetrating mode, the one-way rotating rollers are fixed in the grooves through the rotating shafts, ratchet wheels are arranged at one ends of the rotating shafts, and pawls matched with the ratchet wheels are arranged in the grooves. A cover plate matched with the groove is also arranged in the groove; through the arrangement of the integral structure, the tubular workpiece can be continuously rotated in one direction by repeatedly rotating the wrench in a small range, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a self-tightening pipe clamp wrench. Background Art

[0002] A pipe wrench is a commonly used tool, which is widely used to clamp and rotate round tubular workpieces. A pipe wrench generally consists of a movable jaw body and a fixed jaw body. The rear half of the movable jaw body is provided with tooth grooves and the workpiece is clamped by an adjusting nut.

[0003] When the existing pipe clamp wrench is used to rotate the tubular workpiece in one direction at a large angle, the wrench needs to rotate at the same angle as the tubular workpiece. In some narrow ranges, the rotation of the wrench will be blocked, and the wrench needs to be repeatedly installed, rotated, and removed in a small range, which is troublesome to use. Therefore, it is necessary to design a universal self-tightening wrench that can solve the above problems. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a self-tightening pipe clamp wrench.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a self-tightening pipe clamp wrench, comprising a fixed clamp body and a movable clamp head, wherein a fixed connecting plate body is arranged in the middle of the fixed connecting plate body, an adjusting screw ring is arranged in the middle of the fixed connecting plate body, a threaded rod is arranged on one side of the movable clamp head, the threaded rod is inserted through the adjusting screw ring and matched with the adjusting screw ring, an arc groove is arranged on the top end of the fixed clamp body and a groove is arranged on both ends of the arc groove, a one-way rotating roller is arranged in the groove, a rotating shaft is inserted in the axis center of the one-way rotating roller, the one-way rotating roller is fixed in the groove via the rotating shaft, a ratchet is arranged at one end of the rotating shaft, a ratchet pawl matched with the ratchet is arranged in the groove, and a cover plate matched with the ratchet is also arranged in the groove.

[0007] As a preferred technical solution of the utility model, both ends of the cover plate are provided with mounting plates, the mounting plates are provided with first screw holes, both ends of the groove are provided with mounting grooves, and second screw holes are provided in the mounting grooves corresponding to the first screw holes.

[0008] As a preferred technical solution of the utility model, the outer wall of the one-way roller and the top of the cover plate are both provided with anti-slip grooves.

[0009] As a preferred technical solution of the utility model, a limiting spring piece is provided on one side of the fixed clamp body, and one end of the limiting spring piece is arranged in contact with the threaded rod.

[0010] As a preferred technical solution of the utility model, the multiple pawls are all arranged in a clockwise direction.

[0011] The beneficial effects of the utility model are as follows: the self-tightening pipe clamp wrench is provided with an arc groove at the top end of the fixed clamp body and the bottom end of the movable clamp head, and grooves are provided at both ends of the arc groove, a one-way roller is provided in the groove, a rotating shaft is inserted at the axis center of the one-way roller, the one-way roller is fixed in the groove via the rotating shaft, a ratchet is provided at one end of the rotating shaft, and a pawl matched with the ratchet is provided in the groove, through the interaction between the ratchet wheel and the pawl, the wrench is rotated counterclockwise, the one-way roller does not rotate, and the tubular workpiece can be driven to rotate, and then the wrench is rotated clockwise to adjust the wrench angle, and then the wrench is rotated counterclockwise, so that the one-way roller can only rotate clockwise repeatedly, and the tubular workpiece can be continuously rotated in one direction as long as the wrench is repeatedly rotated in a small range, thereby increasing the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of a self-tightening pipe clamp wrench of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a self-tightening pipe clamp wrench (without cover plate) of the utility model;

[0015] Figure 3 The utility model is a self-tightening pipe clamp wrench Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 It is a structural schematic diagram of a one-way rotating roller of a self-tightening pipe clamp wrench of the utility model;

[0017] Figure 5 It is a structural schematic diagram of a self-tightening pipe clamp wrench cover plate of the utility model;

[0018] Figure 6 The utility model is a structural schematic diagram of a self-tightening pipe clamp wrench (without a fixed connecting plate body).

[0019] In the figure: 1. fixed pliers body; 2. movable pliers head; 3. fixed connecting plate body; 4. adjusting screw ring; 5. threaded rod; 6. arc groove; 7. cover plate; 8. groove; 9. one-way roller; 10. rotating shaft; 11. ratchet; 12. pawl; 13. mounting plate; 14. first screw hole; 15. mounting groove; 16. second screw hole; 17. limiting spring piece. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example: Figure 1-2 As shown, the utility model is a self-tightening pipe clamp wrench, comprising a fixed clamp body 1 and a movable clamp head 2. A fixed connecting plate body 3 is provided in the middle of the fixed connecting plate body 3. An adjusting screw ring 4 is provided in the middle of the fixed connecting plate body 3. A threaded rod 5 is provided on one side of the movable clamp head 2. The threaded rod 5 is inserted through the adjusting screw ring 4 and matched with it. The threaded rod 5 is driven up and down by the adjusting screw ring 4 to realize the self-tightening function of the pipe clamp wrench. Figure 3-4 As shown, the top of the fixed pliers body 1 and the bottom of the movable pliers head 2 are both provided with an arc groove 6, and both ends of the arc groove 6 are provided with a groove 8. A one-way roller 9 is provided in the groove 8, and a rotating shaft 10 is inserted at the axis of the one-way roller 9. The one-way roller 9 is fixed in the groove 8 via the rotating shaft 10. A ratchet 11 is provided at one end of the rotating shaft 10, and a ratchet 12 matched with the ratchet 11 is provided in the groove 8. Multiple ratchet pawls 12 are all set in the clockwise direction to ensure that the one-way roller 9 can only rotate clockwise, so that when the wrench rotates clockwise, the single-line roller 9 rotates and does not drive the tubular workpiece to rotate, while when the wrench rotates counterclockwise, the single-line roller 9 does not rotate and can drive the tubular workpiece to rotate. The groove 8 is also provided with a cover plate 7 that matches it, as shown in FIG. Figure 5 As shown, mounting plates 13 are provided at both ends of the cover plate 7, and a first screw hole 14 is provided on the mounting plate 13. Mounting grooves 15 are provided at both ends of the groove 8, and second screw holes 16 are provided in the mounting grooves 15 at positions corresponding to the first screw holes 14, so as to facilitate the disassembly and assembly of the mounting plate 13. After the mounting plate 13 is installed, the pipe clamp wrench can be used like a conventional pipe clamp wrench. After the mounting plate 13 is disassembled, the one-way rotation of the tubular workpiece can also be realized. As long as the wrench is repeatedly rotated within a small range, the tubular workpiece can be continuously rotated in one direction, thereby increasing the convenience of use.

[0022] The outer wall of the one-way roller 9 and the top of the cover plate 7 are both provided with anti-slip grooves to increase the friction force on the tubular workpiece.

[0023] Among them, Figure 6 As shown, a limiting spring piece 17 is provided on one side of the fixed pliers body 1, and one end of the limiting spring piece 17 is arranged in contact with the threaded rod 5 to limit the movement of the threaded rod 5, thereby locking the clamping of the wrench.

[0024] Working principle: When the utility model is working, remove the cover plate 7, align the arc groove 6 with the tubular workpiece, rotate the adjusting screw ring 4 to control the threaded rod 5 to move downward, the movable clamp head 2 cooperates with the fixed clamp body 1 to clamp the tubular workpiece, and the one-way roller 9 contacts the tubular workpiece. Rotate the wrench counterclockwise, due to the interaction between the ratchet 11 and the pawl 12, the one-way roller 9 does not rotate, and can drive the tubular workpiece to rotate, then rotate the wrench clockwise to adjust the wrench angle, and then rotate the wrench counterclockwise, and repeat this process, so that the tubular workpiece can be continuously rotated in one direction within a smaller operating range.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-tightening pipe clamp wrench, comprising a fixed clamp body (1) and a movable clamp head (2), wherein a fixed connecting plate body (3) is provided in the middle of the fixed connecting plate body (1), an adjusting screw ring (4) is provided in the middle of the fixed connecting plate body (3), a threaded rod (5) is provided on one side of the movable clamp head (2), the threaded rod (5) is inserted through the adjusting screw ring (4) and matched therewith, and characterized in that: The top end of the fixed pliers body (1) and the bottom end of the movable pliers head (2) are both provided with an arc groove (6), both ends of the arc groove (6) are provided with a groove (8), a one-way roller (9) is provided in the groove (8), a rotating shaft (10) is inserted at the axis of the one-way roller (9), the one-way roller (9) is fixed in the groove (8) via the rotating shaft (10), a ratchet (11) is provided at one end of the rotating shaft (10), a ratchet pawl (12) matched with the ratchet (11) is provided in the groove (8), and a cover plate (7) matched with the ratchet (11) is also provided in the groove (8).

2. A self-tightening pipe wrench according to claim 1, characterized in that: Both ends of the cover plate (7) are provided with mounting plates (13), and the mounting plates (13) are provided with first screw holes (14). Both ends of the recess (8) are provided with mounting grooves (15), and second screw holes (16) are provided in the mounting grooves (15) at positions corresponding to the first screw holes (14).

3. A self-tightening pipe wrench according to claim 1, characterized in that: The outer wall of the one-way rotating roller (9) and the top end of the cover plate (7) are both provided with anti-slip grooves.

4. A self-tightening pipe wrench according to claim 1, characterized in that: A limiting spring piece (17) is provided on one side of the fixed clamp body (1), and one end of the limiting spring piece (17) is arranged in contact with the threaded rod (5).

5. The self-tightening pipe wrench according to claim 1, characterized in that: The multiple ratchets (12) are all arranged in a clockwise direction.

Images