Torque wrench tester
By introducing a protective component to cover the wrench handle in the torque wrench calibrator, the safety hazard of the wrench handle breaking due to overload is solved, thereby improving the safety and reliability of wrench calibration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 成都国营锦江机器厂
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-23
AI Technical Summary
Existing torque wrench calibration equipment poses safety hazards when measuring high torque, as the wrench handle is prone to breakage due to overload and lacks effective protection.
A torque wrench calibrator was designed, comprising a calibration component, a slide rail, a loading component, and a protective component. The protective component covers the torque wrench handle, and the wrench is protected by a protective cover and an elastic corrugated plate to prevent the handle from breaking.
This effectively eliminates the risk of handle breakage due to excessive torque, improving the safety and reliability of torque wrench calibration.
Smart Images
Figure CN224398878U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing instrument technology, and more specifically, to a torque wrench calibrator. Background Technology
[0002] A torque wrench calibrator is a professional device used to test and calibrate torque tools (such as torque wrenches and torque screwdrivers). It is widely used in automotive repair, aerospace, and machinery manufacturing. This instrument uses high-precision sensors and digital displays to accurately measure and record torque values, ensuring that the tool's output torque meets the set requirements. It is a key instrument for ensuring assembly quality and equipment safety.
[0003] When performing high torque measurement, existing torque wrench calibration equipment may break due to overload, causing the wrench handle to pop out and posing a safety hazard to the operator. At the same time, the equipment itself lacks effective protective measures during the torque calibration process, leaving the wrench handle exposed to the outside, making it difficult to avoid dangers caused by high torque. Utility Model Content
[0004] The purpose of this invention is to solve the technical problem of safety hazards in existing torque wrench calibration equipment when performing high torque measurements, and to propose a torque wrench calibration instrument.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A torque wrench calibrator, comprising:
[0007] A calibration assembly, which is used to fix one end of the test piece and measure and record the torque output by the test piece;
[0008] A slide rail, which is connected to one side of the calibration assembly;
[0009] A loading component is slidably connected to the slide rail. The loading component is used to fix the end of the test piece away from the calibration component and drive it to move in a direction perpendicular to the slide rail.
[0010] A protective component is disposed between the calibration component and the loading component, and the protective component encloses the test piece inside it.
[0011] Furthermore, the verification component includes:
[0012] The calibration host includes at least a torque sensor and an electrical measurement digital display board.
[0013] A torque calibration cylinder is rotatably connected to the surface of the calibration host, and the torque calibration cylinder is electrically connected to a torque sensor inside the calibration host.
[0014] A first plate is connected to the torque calibration cylinder and rotates synchronously with the torque calibration cylinder. The edge of the first plate is provided with a plurality of first dovetail grooves for fixing the protective component.
[0015] Furthermore, the loading component includes:
[0016] The sliding seat has a U-shaped structure and a groove at its bottom that is adapted to the slide rail. The sliding seat is slidably connected to the slide rail through the groove. Vertical plates are provided at both ends of the sliding seat, and the two vertical plates are parallel to each other.
[0017] An adjusting screw, the two ends of which are movably connected to the two vertical plates respectively, and the adjusting screw is perpendicular to the slide rail;
[0018] A movable block is provided with a through screw hole and is threaded to the adjusting screw through the screw hole. The movable block moves along the direction of the adjusting screw, and a limiting part for blocking the test piece is provided above the movable block.
[0019] The second plate is connected to the side of the movable block near the calibration component. The edge of the second plate is provided with a plurality of second dovetail grooves, which face the first plate.
[0020] Furthermore, the protective component includes:
[0021] The insert plate has a strip-shaped structure, with its two ends inserted into the first dovetail groove and the second dovetail groove, respectively, and the two insert plates are arranged in parallel.
[0022] The protective cover is a strip-shaped plate structure, the length of which matches the insert plate. The longitudinal section of the protective cover is arc-shaped. Two protective covers are respectively connected above the two insert plates, and the space between the two protective covers is for accommodating the test piece.
[0023] An elastic corrugated plate is disposed in the middle of the protective cover.
[0024] Furthermore, the limiting part includes:
[0025] The limiting post is vertically arranged on the upper surface of the movable block. Two limiting posts are arranged in a direction parallel to the adjusting screw, and the distance between the two limiting posts is greater than the width of the measured part.
[0026] A stop arm, which is rotatably connected to the upper end of the limiting post, is used to form a blockage above the workpiece being tested.
[0027] Furthermore, a baffle is provided at one end of the slide rail away from the calibration component to limit the travel of the slide rail.
[0028] The beneficial effects of this utility model are as follows: The torque wrench calibrator provided in this application uses a protective cover to cover the handle of the torque wrench as a protective measure, which can effectively eliminate the safety hazards caused by the handle breaking and popping out due to excessive torque, and improve the safety and reliability of torque wrench calibration. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of a torque wrench calibrator provided in an embodiment of the present utility model;
[0030] Figure 2 This is a schematic diagram of the first plate and the second plate structure in an embodiment of this utility model;
[0031] Figure 3 This is a schematic diagram of the protective component structure in an embodiment of this utility model.
[0032] The markings in the diagram are as follows:
[0033] 1. Calibration assembly; 11. Calibration main unit; 12. Torque calibration cylinder; 121. First plate; 1211. First dovetail groove;
[0034] 2. Slide rail;
[0035] 3. Loading component; 31. Sliding seat; 32. Adjusting screw; 321. Handwheel; 33. Movable block; 331. Limiting post; 332. Stop arm; 333. Second plate; 3331. Second dovetail groove;
[0036] 4. Protective components; 41. Insert plate; 42. Protective cover; 43. Flexible corrugated plate. Detailed Implementation
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0041] In this embodiment, the test piece is a torque wrench. Please refer to [link / reference]. Figures 1 to 3 The embodiment of this application shown provides a torque wrench calibrator. In practice, the torque wrench calibrator can be used to test and calibrate the torque accuracy of preset, digital display, and constant force torque wrenches, as well as torque screwdrivers, screwdrivers, and other tools. The torque wrench calibrated by the torque wrench calibrator can ensure its tightening effect on the parts.
[0042] Please see Figure 1The torque wrench calibrator includes: a calibration component 1, a slide rail 2, a loading component 3, and a protective component 4. The calibration component 1 is used to fix the end of the torque wrench and measure and record the torque output by the torque wrench. More specifically, the calibration component 1 includes: a calibration host 11 and a torque calibration cylinder 12. The calibration host 11 is equipped with a torque sensor and an electrical measurement digital display board. The torque calibration cylinder 12 has a cylindrical structure that is adapted to the shape and size of the torque wrench sleeve. The torque calibration cylinder 12 is rotatably connected to the upper surface of the calibration host 11 and is connected to the torque sensor of the calibration host 11. During calibration, the sleeve of the torque wrench is connected inside the torque calibration cylinder 12. The torque measured by the torque sensor is output in the form of an electrical signal, which is then digitally processed and displayed by the electrical measurement digital display board.
[0043] The slide rail 2 is fixedly connected to one side of the calibration host 11, and a baffle is provided on the end of the slide rail 2 away from the calibration host 11 to limit the stroke.
[0044] The loading component 3 is slidably connected to the slide rail 2. The loading component 3 is used to fix the end of the torque wrench away from the calibration component 1 and drive it to move in a direction perpendicular to the slide rail 2, so that the torque wrench rotates around the torque calibration cylinder 12 as the center point to achieve the loading effect. The loading component 3 includes: a sliding seat 31, an adjusting screw 32 and a movable block 33. The sliding seat 31 has a U-shaped structure and a groove at its bottom that is adapted to the slide rail 2. The sliding seat 31 is slidably connected to the slide rail 2 through the groove, so that the distance between the loading component 3 and the calibration component 1 is adjustable to accommodate tools of different lengths.
[0045] In the above technical solution, vertical plates are respectively provided at both ends of the sliding seat 31, and the two vertical plates are parallel to each other; the two ends of the adjusting screw 32 are respectively movably connected to the two vertical plates, and the axis of the adjusting screw 32 is perpendicular to the slide rail 2, so that the adjusting screw 32 can rotate relative to the sliding seat 31; as an embodiment of this application, a handwheel 321 is provided at the end of the adjusting screw 32, so that the operator can control the rotation of the adjusting screw 32 by shaking the handwheel 321.
[0046] A through-hole is provided in the middle of the movable block 33, and the movable block 33 is threadedly connected to the adjusting screw 32 through the screw hole. A roller is provided at the bottom of the movable block 33, and the movable block 33 can move horizontally along the axis of the adjusting screw 32 when the adjusting screw 32 rotates. A limiting part is provided above the movable block 33 to block the torque wrench and move the torque wrench. The limiting part includes a limiting post 331 and a stop arm 332. The two limiting posts 331 are perpendicular to the upper surface of the movable block 33 and are arranged along the axis of the adjusting screw 32. The distance between the two limiting posts 331 is greater than the handle width of the torque wrench. The stop arm 332 is provided at the upper end of any one of the limiting posts 331 and can rotate around the limiting post 331. When the stop arm 332 rotates between the two limiting posts 331, the stop arm 332 forms a block above the torque wrench, preventing the torque wrench from moving in the vertical direction and jumping out of the limiting part. When the torque wrench is being calibrated, the socket of the torque wrench is inserted into the torque calibration cylinder 12, and the other end is placed on top of the movable block 33 and between the two limit posts 331. The stop arm 332 is rotated to cover the top of the torque wrench, thus limiting the torque wrench. The adjusting screw 32 is then rotated to move the movable block 33. At this time, the corresponding limit post 331 abuts against one side of the torque wrench handle and pushes the torque wrench handle to move, so that the entire torque wrench rotates around the torque calibration cylinder 12 as the center point.
[0047] Please see Figure 2 In the above technical solution, the torque calibration cylinder 12 is further provided with a first plate 121. The edge of the first plate 121 is provided with two first dovetail grooves 1211 for fixing the protective assembly 4. The first plate 121 rotates synchronously with the torque calibration cylinder 12. The movable block 33 is also provided with a second plate 333 on the side near the calibration assembly 1, which cooperates with the first plate 121. The edge of the second plate 333 is provided with two second dovetail grooves 3331, which face the first plate 121. The protective assembly 4 is disposed between the calibration assembly 1 and the loading assembly 3, and the protective assembly 4 covers the torque wrench inside it. Please refer to [link to relevant documentation]. Figure 3In this embodiment, the protective component 4 includes: insert plate 41, protective cover 42, and elastic corrugated plate 43; wherein, the insert plate 41 has a strip structure, and its two ends are respectively inserted into the first dovetail groove 1211 and the second dovetail groove 3331, and the two insert plates 41 are arranged in parallel; the protective cover 42 has an overall strip structure, the protective cover 42 is made of stainless steel, its length matches that of the insert plate 41, the longitudinal section of the protective cover 42 is arc-shaped, the two protective covers 42 are respectively connected above the two insert plates 41, the space between the two protective covers 42 is for accommodating the torque wrench, the upper ends of the two protective covers 42 are close to each other, after the torque wrench is fixed, the two protective covers 42 form protection on both sides of the torque wrench; the two elastic corrugated plates 43 are respectively set in the middle of the two protective covers 42; during the loading of the torque wrench, the elastic corrugated plates 43 can bend while the first plate 121 rotates, avoiding the twisting and deformation of the protective cover 42 itself, thereby improving the safety and reliability of the verification process.
[0048] The torque wrench calibrator provided in this application uses a protective cover 42 to cover the handle of the torque wrench as a protective measure, which can effectively eliminate the safety hazards caused by the handle breaking and popping out due to excessive torque, and improve the safety and reliability of torque wrench calibration.
[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A torque wrench calibrator, characterized in that, include: A calibration assembly, which is used to fix one end of the test piece and measure and record the torque output by the test piece; A slide rail, which is connected to one side of the calibration assembly; A loading component is slidably connected to the slide rail. The loading component is used to fix the end of the test piece away from the calibration component and drive it to move in a direction perpendicular to the slide rail. A protective component is disposed between the calibration component and the loading component, and the protective component encloses the test piece inside it.
2. The torque wrench calibrator according to claim 1, characterized in that, The verification components include: The calibration host includes at least a torque sensor and an electrical measurement digital display board. A torque calibration cylinder is rotatably connected to the surface of the calibration host, and the torque calibration cylinder is electrically connected to a torque sensor inside the calibration host. A first plate is connected to the torque calibration cylinder and rotates synchronously with the torque calibration cylinder. The edge of the first plate is provided with a plurality of first dovetail grooves for fixing the protective component.
3. A torque wrench calibrator according to claim 2, characterized in that, The loading component includes: The sliding seat has a U-shaped structure and a groove at its bottom that is adapted to the slide rail. The sliding seat is slidably connected to the slide rail through the groove. Vertical plates are provided at both ends of the sliding seat, and the two vertical plates are parallel to each other. An adjusting screw, the two ends of which are movably connected to the two vertical plates respectively, and the adjusting screw is perpendicular to the slide rail; A movable block is provided with a through screw hole and is threaded to the adjusting screw through the screw hole. The movable block moves along the direction of the adjusting screw, and a limiting part for blocking the test piece is provided above the movable block. The second plate is connected to the side of the movable block near the calibration component. The edge of the second plate is provided with a plurality of second dovetail grooves, which face the first plate.
4. A torque wrench calibrator according to claim 3, characterized in that, The protective components include: The insert plate has a strip-shaped structure, with its two ends inserted into the first dovetail groove and the second dovetail groove, respectively, and the two insert plates are arranged in parallel. The protective cover is a strip-shaped plate structure, the length of which matches the insert plate. The longitudinal section of the protective cover is arc-shaped. Two protective covers are respectively connected above the two insert plates, and the space between the two protective covers is for accommodating the test piece. An elastic corrugated plate is disposed in the middle of the protective cover.
5. A torque wrench calibrator according to claim 3, characterized in that, The limiting part includes: The limiting post is vertically arranged on the upper surface of the movable block. Two limiting posts are arranged in a direction parallel to the adjusting screw, and the distance between the two limiting posts is greater than the width of the measured part. A stop arm, which is rotatably connected to the upper end of the limiting post, is used to form a blockage above the workpiece being tested.
6. A torque wrench calibrator according to claim 1, characterized in that, A baffle is provided at one end of the slide rail away from the calibration component to limit the travel of the slide rail.