Fixed-torque wrench for pipeline maintenance

Abstract

The utility model discloses a pipeline maintenance fixed torque wrench which comprises a rotating handle, a movable block is movably embedded in the rotating handle, a groove body is formed in the center of the interior of the rotating handle, a plurality of clamping grooves are evenly formed in the outer side of the movable block, and a rotating mechanism facilitating nut rotating is arranged in the center of the movable block. A limiting plate is fixedly arranged on the outer side of the rotating handle, and a first sliding block is arranged in the rotating handle in a sliding mode. The rotating mechanism is connected to the outer side of the nut in a sleeving mode, then the rotating handle is rotated, the rotating mechanism drives the nut to rotate, fastening work is conducted in this way, when the nut is fastened to a proper torque, the force needed for rotating the nut is large at the moment, a clamping groove extrudes a fixing ball to move downwards during rotation, and a first sliding block is driven to move downwards to extrude a spring; and the nut cannot be rotated until the fixing ball is separated from the interior of the original clamping groove and moves into the adjacent clamping groove, so that the fixing torque of the nut is fixed, and excessive fixation is prevented.

Description

Technical Field

[0001] The utility model relates to the field of wrench equipment, in particular to a fixed torque wrench for pipeline maintenance. Background Art

[0002] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threaded fasteners that hold the openings or holes of bolts or nuts. Wrenches are usually made of structural steel made of carbon or alloy materials. Wrenches usually have openings or holes for clamping bolts or nuts at one or both ends of the handle. When in use, external force is applied to the handle along the direction of thread rotation to turn the bolt or nut.

[0003] When the wrench is used, the nut is tightened by turning. However, in some installation environments, the nut cannot be installed too tight. After a certain torque, it cannot be tightened any further to ensure installation while preventing the nut from being installed too tight. During manual installation, the wrench cannot determine the tightness of the installation, which can easily lead to over-tightening or over-loosening of the installation, and cannot meet the installation requirements. Therefore, a device is urgently needed to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a pipeline maintenance torque wrench to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline maintenance torque wrench, comprising a rotating handle, a movable block is movably inlaid inside the rotating handle, a groove body is opened in the center of the rotating handle, a plurality of slots are evenly opened on the outside of the movable block, a rotating mechanism for facilitating the rotation of a nut is arranged at the center of the movable block, a limit plate is fixedly arranged on the outside of the rotating handle, a first slider is slidably arranged inside the rotating handle, a fixed ball is fixedly arranged on the top of the first slider, the top of the fixed ball is slidably arranged in the inner position of the slot, a hole slot is opened at the bottom end of the first slider, a screw is fixedly arranged at the bottom end of the rotating handle, the top of the screw movably penetrates into the inner position of the hole slot, a second slider is slidably arranged inside the rotating handle, and a fixed screw is fixedly arranged between the second slider and the first slider. The spring, the second slider is movably sleeved on the outside of the screw, and a sleeve is provided on the outside of the screw through a threaded sleeve. When in use, the rotating mechanism is sleeved on the outside of the nut, and then the rotating handle is rotated to make the rotating mechanism drive the nut to rotate, so as to perform the tightening work. When tightened to a suitable torque, the force required to rotate the nut is large, resulting in the slot squeezing the fixed ball to move downward during rotation, thereby driving the first slider to move downward to squeeze the spring until the fixed ball is separated from the original slot and moves to the adjacent slot. In this way, the nut cannot be rotated, so that the torque for fixing the nut is constant to prevent over-fixing; when the fixing torque needs to be adjusted, the sleeve is rotated at this time to make the sleeve move upward along the screw, squeezing the second slider to move upward or downward, thereby squeezing or loosening the spring, which is convenient for adjusting the tightness of the spring, so that the tightening torque is convenient to adjust.

[0006] Preferably, the rotating mechanism includes a limit groove and a clamping block, the limit groove is opened at the center position of the movable block, and the clamping block is slidably arranged inside the limit groove. When in use, by providing clamping blocks with holes of different specifications, when targeting nuts of different specifications, the clamping block is squeezed hard at this time to make the clamping block disengage from the limit groove, which is convenient for replacement. In this way, the clamping blocks with holes of different specifications can be replaced, thereby improving the practicality of the device.

[0007] Preferably, two limit plates are provided and symmetrically fixed at both sides of the rotating handle to prevent the movable block from escaping from the rotating handle.

[0008] Preferably, the spring sleeve is arranged on the outside of the screw rod.

[0009] Preferably, the top end of the sleeve is tightly attached to the bottom end of the second sliding block, and anti-skid patterns for increasing friction are arranged around the outer side of the sleeve.

[0010] Preferably, a friction force that hinders the movement of the clamping block is provided between the outer side of the clamping block and the side wall of the limiting groove, and a hole that fits the outer side of the nut is provided at the center of the clamping block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the utility model is used, the rotating mechanism is sleeved on the outside of the nut, and then the rotating handle is rotated so that the rotating mechanism drives the nut to rotate, and the tightening work is performed in this way. When the tightening is to a suitable torque, the force required to rotate the nut is large, resulting in the clamping slot squeezing the fixed ball to move downward during rotation, thereby driving the first slider to move downward to squeeze the spring until the fixed ball is separated from the original clamping slot and moves to the adjacent clamping slot, so that the nut cannot be rotated, so that the torque for fixing the nut is constant, and excessive fixing is prevented;

[0013] 2. When the fixing torque of the utility model needs to be adjusted, the sleeve is rotated so that the sleeve moves upward along the screw rod, squeezing the second slider to move upward or downward, thereby squeezing or loosening the spring, making it convenient to adjust the tightness of the spring, thereby making it convenient to adjust the tightening torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a pipeline maintenance torque wrench according to the utility model;

[0015] Figure 2 This is a bottom view of a fixed torque wrench for pipeline maintenance according to the utility model;

[0016] Figure 3 This is a cross-sectional view of a torque wrench for pipeline maintenance according to the utility model;

[0017] Figure 4 It is an enlarged schematic diagram of a fixed torque wrench A for pipeline maintenance according to the utility model.

[0018] In the figure: 1. rotating handle; 2. limiting plate; 3. movable block; 4. slot; 5. limiting slot; 6. block; 7. first slider; 8. fixed ball; 9. second slider; 10. screw; 11. sleeve; 12. spring; 13. hole slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4The utility model provides a pipeline maintenance torque wrench, including a rotating handle 1, a movable block 3 is movably embedded in the rotating handle 1, a groove body is opened in the center of the rotating handle 1, a plurality of slots 4 are evenly opened on the outside of the movable block 3, a rotating mechanism for facilitating the rotation of the nut is arranged at the center of the movable block 3, a limit plate 2 is welded and fixed on the outside of the rotating handle 1, there are two limit plates 2, which are symmetrically fixed at the two sides of the rotating handle 1 to prevent the movable block 3 from escaping from the rotating handle 1, a first slider 7 is slidable inside the rotating handle 1, a fixed ball 8 is welded and fixed at the top of the first slider 7, the top of the fixed ball 8 slides in the inner position of the slot 4, a hole slot 13 is opened at the bottom end of the first slider 7, a screw rod 10 is welded and fixed at the bottom end of the rotating handle 1, the top of the screw rod 10 movably penetrates into the inner position of the hole slot 13, a second slider 9 is slidable inside the rotating handle 1, a spring 12 is welded and fixed between the second slider 9 and the first slider 7, and the spring 12 is sleeved on the outer side of the screw 10, The second slider 9 is movably sleeved on the outside of the screw rod 10, and a sleeve 11 is sleeved on the outside of the screw rod 10 through a thread. The top of the sleeve 11 is tightly against the bottom of the second slider 9. When in use, the rotating mechanism is sleeved on the outside of the nut, and then the rotating handle 1 is rotated to make the rotating mechanism drive the nut to rotate, so as to perform the tightening work. When tightened to a suitable torque, the force required to rotate the nut is large, resulting in the clamping groove 4 squeezing the fixed ball 8 to move downward during rotation, thereby driving the first slider 7 to move downward to squeeze the spring 12 until the fixed ball 8 is separated from the original clamping groove 4 and moves to the adjacent clamping groove 4. In this way, the nut cannot be rotated, so that the torque for fixing the nut is constant to prevent over-fixing; when the fixing torque needs to be adjusted, the sleeve 11 is rotated at this time, so that the sleeve 11 moves upward along the screw rod 10, squeezing the second slider 9 to move upward or downward, thereby squeezing or loosening the spring 12, which is convenient for adjusting the tightness of the spring 12, so that the tightening torque is convenient to adjust.

[0021] The rotating mechanism includes a limiting groove 5 and a block 6. The limiting groove 5 is provided at the center of the movable block 3. The block 6 slides inside the limiting groove 5. There is friction between the outer side of the block 6 and the side wall of the limiting groove 5 to hinder the movement of the block 6. A hole that fits the outer side of the nut is provided at the center of the block 6. When in use, the block 6 with holes of different specifications is used, so that when nuts of different specifications are used, the block 6 is squeezed hard to make the block 6 disengage from the limiting groove 5, which is convenient for replacement. In this way, the block 6 with holes of different specifications can be replaced, thereby improving the practicality of the device.

[0022] Working principle: when in use, the rotating mechanism is sleeved on the outside of the nut, and then the rotating handle 1 is rotated so that the rotating mechanism drives the nut to rotate, and the tightening work is performed in this way. When tightened to a suitable torque, the force required to rotate the nut is large, resulting in the clamping slot 4 squeezing the fixed ball 8 to move downward during rotation, thereby driving the first slider 7 to move downward to squeeze the spring 12 until the fixed ball 8 is separated from the original clamping slot 4 and moves to the adjacent clamping slot 4. In this way, the nut cannot be rotated, so that the torque of the nut fixing is constant to prevent excessive fixing; when the fixing torque needs to be adjusted, the sleeve 11 is rotated at this time, so that the sleeve 11 moves upward along the screw 10, squeezing the second slider 9 to move upward or downward, thereby squeezing or loosening the spring 12, which is convenient for adjusting the tightness of the spring 12, so that it is convenient to adjust the tightening torque; when in use, by setting a clamping block 6 with holes of different specifications, when targeting nuts of different specifications, the clamping block 6 is squeezed hard at this time, so that the clamping block 6 is separated from the limiting slot 5, which is convenient for replacement, so that the clamping block 6 with holes of different specifications can be replaced, thereby improving the practicality of the device.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A torque wrench for pipeline maintenance, comprising a rotating handle (1), characterized in that: A movable block (3) is movably embedded inside the rotating handle (1), a groove body is provided at the center of the rotating handle (1), a plurality of slots (4) are evenly provided on the outside of the movable block (3), a rotating mechanism for facilitating the rotation of the nut is provided at the center of the movable block (3), a limit plate (2) is fixedly provided on the outside of the rotating handle (1), a first sliding block (7) is slidably provided inside the rotating handle (1), a fixed ball (8) is fixedly provided at the top end of the first sliding block (7), and the top end of the fixed ball (8) is slidably provided in the slot. (4) an internal position, a hole groove (13) is formed at the bottom end of the first slider (7), a screw rod (10) is fixedly arranged at the bottom end of the rotating handle (1), the top end of the screw rod (10) is movably inserted into the internal position of the hole groove (13), a second slider (9) is slidably arranged inside the rotating handle (1), a spring (12) is fixedly arranged between the second slider (9) and the first slider (7), the second slider (9) is movably sleeved on the outside of the screw rod (10), and a sleeve (11) is arranged on the outside of the screw rod (10) through a threaded sleeve.

2. A pipeline maintenance torque wrench according to claim 1, characterized in that: The rotating mechanism comprises a limiting groove (5) and a clamping block (6); the limiting groove (5) is arranged at the center of the movable block (3); and the clamping block (6) is slidably arranged inside the limiting groove (5).

3. A pipeline maintenance torque wrench according to claim 2, characterized in that: Two limit plates (2) are provided and are symmetrically fixed at two sides of the rotating handle (1).

4. A pipeline maintenance torque wrench according to claim 3, characterized in that: The spring (12) is sleeved and arranged on the outside of the screw rod (10).

5. A pipeline maintenance torque wrench according to claim 4, characterized in that: The top end of the sleeve (11) is in close contact with the bottom end of the second slider (9), and the outer side of the sleeve (11) is surrounded by anti-skid patterns for increasing friction.

6. A pipeline maintenance torque wrench according to claim 5, characterized in that: A friction force that hinders the movement of the clamping block (6) is provided between the outer side of the clamping block (6) and the side wall of the limiting groove (5), and a hole that fits the outer side of the nut is provided at the center of the clamping block (6).

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