Improved torque wrench calibration device

Abstract

The utility model belongs to the technical field of calibration, particularly relates to an improved torque wrench calibration device, and aims to solve the problems that when a torque wrench calibrator is used, due to the influence of the size of a torque wrench, the tail part of the torque wrench is inconvenient to fix, the tail part of the torque wrench is difficult to center and easy to shake, and the calibration efficiency is further influenced. Comprising a torque wrench calibrator body, a rack is arranged on a measuring shaft of the torque wrench calibrator body, a fixing frame is installed on the rack in a sliding mode, and the top of the measuring shaft of the torque wrench calibrator body is provided with an inner hexagonal clamping groove used for being connected with a torque wrench in a clamping mode. The torque wrench torsion shaft and the measuring shaft of the torque wrench calibrator body are coaxially connected in series. When the torque wrench calibration clamp is used, torque wrenches of different sizes can be effectively centered, clamped and calibrated, the calibration accuracy and efficiency are improved, and convenience is provided for calibration work of the torque wrenches.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration, in particular to an improved torque wrench calibration device. Background Art

[0002] The torque wrench calibration device is a device used to calibrate the torque wrench to ensure accurate torque wrench measurement. This device is usually a torque wrench calibrator. The torque wrench calibrator has a built-in torque sensor and displays the difference between the actual torque value and the measured torque value on the display. Through the torque wrench calibrator, users can regularly check the accuracy of the torque wrench to ensure that the torque value measured during use meets the standard requirements.

[0003] At present, when a torque wrench calibrator is used, it is inconvenient to fix the tail of the torque wrench due to the size of the torque wrench, which makes it difficult to center the tail of the torque wrench and easy to shake, thereby affecting the calibration efficiency.

[0004] In view of the above problems, the utility model document proposes an improved torque wrench calibration device. Utility Model Content

[0005] The utility model provides an improved torque wrench calibration device, which solves the problem in the prior art that when a torque wrench calibrator is in use, it is inconvenient to fix the tail of the torque wrench due to the size of the torque wrench, resulting in the tail of the torque wrench being difficult to center and easy to shake, thereby affecting the calibration efficiency.

[0006] The utility model provides the following technical solutions:

[0007] An improved torque wrench calibration device, comprising:

[0008] A torque wrench calibrator body, a stand is provided on the measuring axis of the torque wrench calibrator body, a fixing frame is slidably mounted on the stand, a hexagonal slot for clamping the torque wrench torsion drawer is provided on the top of the measuring axis of the torque wrench calibrator body, so that the torque wrench torsion drawer is coaxially connected in series with the measuring axis of the torque wrench calibrator body, a support seat is fixedly provided on one side of the torque wrench calibrator body, and a U-shaped frame is fixedly provided on the top of the support seat;

[0009] A clamping and centering component is provided on the fixing frame and is used to clamp and fix the tail of torque wrenches of different sizes and keep them centered;

[0010] The adjusting component is arranged on the U-shaped frame and is used to drive the frame to rotate within a certain range with the measuring axis of the torque wrench calibrator body as the center.

[0011] In one possible design, the clamping centering component includes a mounting groove arranged at the top of the fixing frame, and bidirectional threaded screws are rotatably installed at both ends of the inner wall of the mounting groove, and two matching screw seats are symmetrically threadedly connected on the bidirectional threaded screw, and the top of the screw seat passes through the notch of the mounting groove and is fixedly provided with a clamping plate, and one end of the bidirectional threaded screw passes through the outer wall of the fixing frame and is fixedly provided with an anti-slip screw cap.

[0012] In a possible design, two protrusions for improving movement stability are symmetrically fixedly provided on the bottom of the clamping plate, and a limiting groove for slidingly connecting the corresponding protrusions is provided on the top of the fixing frame.

[0013] In a possible design, a reinforcing nut is threadedly connected on the bidirectional threaded screw rod to prevent the bidirectional threaded screw rod from rotating again, and the reinforcing nut is located between the anti-slip screw cap and the fixing frame.

[0014] In a possible design, the adjustment assembly includes a threaded rod rotatably mounted on both ends of the inner wall of the U-shaped frame, a matching slider is threadedly connected to the threaded rod, and one end of the threaded rod passes through the outer wall of the U-shaped frame and is fixedly provided with a hand crank.

[0015] In a possible design, the top of the slider is slidably connected to the first guide groove at the bottom of the platform, and the bottom of the slider is slidably connected to the second guide groove at the top of the U-shaped frame.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] In this application, the specific workflow mainly includes the following steps:

[0018] Preparation: Place the torque wrench calibration device on a stable workbench, ensure that the torque wrench calibrator body is stable and does not shake, and check whether all components are intact, especially whether the parts of the clamping centering component and the adjustment component are complete and firmly installed;

[0019] Clamp the torque wrench: insert the torque wrench's torsion drawer to be calibrated into the hexagonal slot on the top of the measuring axis of the torque wrench calibrator body, ensure that the torque wrench's torsion drawer is coaxially connected in series with the measuring axis of the torque wrench calibrator body, adjust the position of the fixed frame on the stand so that it corresponds to the tail of the torque wrench, rotate the anti-slip screw cap at one end of the bidirectional threaded screw, because the two screw seats are symmetrically threaded on the bidirectional threaded screw, so the two screw seats will move toward the center or outward at the same time, when the distance between the two clamping plates is appropriate, stop rotating the anti-slip screw cap, at this time the clamping plate will clamp the tail of the torque wrench, in order to ensure the stability of the clamping and prevent the bidirectional threaded screw from loosening, tighten the reinforcement nut to make it close to the outer wall of the fixed frame;

[0020] Perform calibration work: shake the hand crank of the adjustment component, and the hand crank drives the threaded rod to rotate in the U-shaped frame. Since a slider is threadedly connected to the threaded rod, when the threaded rod rotates, the slider will move along the threaded rod, and the top of the slider is slidingly connected to the first guide groove at the bottom of the test stand, and the bottom is also slidingly connected to the second guide groove at the top of the U-shaped frame. This double sliding connection method ensures the stability and accuracy of the slider during movement. When the slider moves, it will drive the test stand and the torque wrench fixed on the test stand to rotate, thereby adjusting the position of the torque wrench. According to the calibration requirements, the torque wrench is calibrated and tested through the torque wrench calibrator body, and the display results of the torque wrench calibrator body are observed to determine whether the torque wrench meets the calibration requirements. If the calibration requirements are not met, the above steps can be repeated, the position of the torque wrench is adjusted through the adjustment component, and the calibration test is performed again.

[0021] The utility model has the following beneficial effects:

[0022] The utility model can realize effective centering clamping and calibration of torque wrenches of different sizes, improves the accuracy and efficiency of calibration, and provides convenience for the calibration work of the torque wrenches. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an improved torque wrench calibration device provided by an embodiment of the utility model;

[0024] Figure 2 A schematic structural diagram of an improved torque wrench calibration device provided by an embodiment of the utility model from another perspective;

[0025] Figure 3 A schematic diagram of the connection structure between a U-shaped frame and a stand of an improved torque wrench calibration device provided by an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the structure of a fixing frame of an improved torque wrench calibration device provided in an embodiment of the utility model.

[0027] Figure numerals: 1. Torque wrench calibrator body; 2. Stand; 3. Hexagon socket slot; 4. Support seat; 5. Fixing frame; 6. Mounting slot; 7. Bidirectional threaded screw; 8. Screw seat; 9. Clamping plate; 10. Anti-slip screw cap; 11. Reinforcement nut; 12. Bump; 13. Limiting slot; 14. U-shaped frame; 15. Threaded rod; 16. Slider; 17. First guide slot; 18. Second guide slot; 19. Hand crank. DETAILED DESCRIPTION

[0028] 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 of 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.

[0029] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0031] Embodiment 1

[0032] Please refer to Figure 1-4 , a calibration device, comprising:

[0033] A torque wrench calibrator body 1, which has a built-in torque sensor and displays the difference between the actual torque value and the measured torque value on a display screen, is model NJ-100 (P), and a stand 2 is provided on its measuring axis, and a fixing frame 5 is slidably mounted on the stand 2 for subsequent clamping work, and at the same time, a hexagonal card slot 3 is provided on the top of the measuring axis of the torque wrench calibrator body 1, and the card slot is used to clamp the torque wrench torsion drawer, so that the torque wrench torsion drawer and the measuring axis of the torque wrench calibrator body 1 can be coaxially connected in series, and a support seat 4 is fixedly provided on one side of the torque wrench calibrator body 1, and a U-shaped frame 14 is fixedly provided on the top of the support seat 4 for subsequent adjustment work;

[0034] In order to facilitate the clamping and fixing of the tail of torque wrenches of different sizes and keep them centered, the present application provides a clamping and centering component, which mainly includes a mounting groove 6, which is arranged at the top of the fixing frame 5, and two bidirectional threaded screws 7 are rotatably installed at both ends of the inner wall of the mounting groove 6. On the bidirectional threaded screw 7, two screw seats 8 are symmetrically threadedly connected, and the top of the screw seat 8 passes through the notch of the mounting groove 6, and a clamping plate 9 is fixedly arranged. The clamping plate 9 is designed to clamp the tail of torque wrenches of different sizes and keep them centered. In order to facilitate adjustment, one end of the bidirectional threaded screw 7 passes through the outer wall of the fixing frame 5, and a non-slip screw cap 10 is fixedly arranged. When the bidirectional threaded screw 7 is rotated, the two screw seats 8 will move toward the center or outward at the same time, thereby driving the clamping plate 9 to move with the movement of the screw seat 8, so as to realize the centered clamping and fixing of the tail of the torque wrench;

[0035] At the bottom of the clamping plate 9, two protrusions 12 are symmetrically fixedly arranged. At the same time, a limiting groove 13 is arranged at the top of the fixing frame 5. The limiting groove 13 is used to slidably connect the corresponding protrusions 12, thereby improving the stability of the clamping plate 9 during the movement;

[0036] An adjustment component mainly includes a threaded rod 15 rotatably mounted on both ends of the inner wall of the U-shaped frame 14. A matching slider 16 is threadedly connected to the threaded rod 15. For easy operation, one end of the threaded rod 15 passes through the outer wall of the U-shaped frame 14 and is fixedly provided with a hand crank 19. The top of the slider 16 is slidably connected to the first guide groove 17 at the bottom of the stand 2. At the same time, the bottom of the slider 16 is also slidably connected to the second guide groove 18 at the top of the U-shaped frame 14. This double sliding connection method ensures the stability and accuracy of the slider 16 during movement. When the slider 16 moves, the stand 2 and the torque wrench fixed on the stand 2 will also move accordingly, thereby realizing rotation within a certain range with the measuring axis of the torque wrench calibrator body 1 as the center, thereby performing torque calibration.

[0037] The present application can be used for torque wrench calibration, and can also be used in other fields applicable to the present application.

[0038] Embodiment 2

[0039] Improvement on the basis of the first embodiment: an improved torque wrench calibration device, which is used in the field of torque wrench calibration, please refer to Figure 4 In order to prevent the bidirectional threaded screw 7 from rotating again after the adjustment is completed, a reinforcing nut 11 is threadedly connected to the bidirectional threaded screw 7. The reinforcing nut 11 is located between the anti-slip screw cap 10 and the fixing frame 5. By tightening the reinforcing nut 11 to fit tightly against the outer wall of the fixing frame 5, the position of the bidirectional threaded screw 7 can be effectively fixed.

[0040] In summary, the improved torque wrench calibration device described in this application achieves effective centering clamping and calibration of torque wrenches of different sizes through the design of clamping and centering components and adjustment components, improves the accuracy and efficiency of calibration, and has important practical application value.

[0041] However, as is well known to those skilled in the art, the working principle and wiring method of the torque wrench calibrator body 1 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0042] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. An improved torque wrench calibration device, characterized in that: include: A torque wrench calibrator body (1), a stand (2) is arranged on the measuring axis of the torque wrench calibrator body (1), a fixing frame (5) is slidably mounted on the stand (2), a hexagonal slot (3) for clamping a torque wrench torsion drawer is arranged at the top of the measuring axis of the torque wrench calibrator body (1), so that the torque wrench torsion drawer is coaxially connected in series with the measuring axis of the torque wrench calibrator body (1), a support seat (4) is fixedly arranged on one side of the torque wrench calibrator body (1), and a U-shaped frame (14) is fixedly arranged on the top of the support seat (4); A clamping and centering component is arranged on the fixing frame (5) and is used to clamp and fix the tails of torque wrenches of different sizes and keep them centered; The adjustment component is arranged on the U-shaped frame (14) and is used to drive the stand (2) to rotate within a certain range with the measuring axis of the torque wrench calibrator body (1) as the center.

2. An improved torque wrench calibration device according to claim 1, characterized in that: The clamping centering component comprises a mounting groove (6) arranged at the top of the fixing frame (5), two ends of the inner wall of the mounting groove (6) are rotatably mounted with bidirectional threaded screws (7), two matching screw seats (8) are symmetrically threadedly connected on the bidirectional threaded screw (7), the top of the screw seat (8) passes through the notch of the mounting groove (6) and is fixedly provided with a clamping plate (9), and one end of the bidirectional threaded screw (7) passes through the outer wall of the fixing frame (5) and is fixedly provided with an anti-slip screw cap (10).

3. An improved torque wrench calibration device according to claim 2, characterized in that: Two protrusions (12) for improving movement stability are symmetrically fixedly arranged at the bottom of the clamping plate (9), and a limiting groove (13) for slidingly connecting the corresponding protrusions (12) is provided at the top of the fixing frame (5).

4. An improved torque wrench calibration device according to claim 2, characterized in that: The bidirectional threaded screw rod (7) is threadedly connected to a reinforcing nut (11) for preventing the screw rod from rotating again, and the reinforcing nut (11) is located between the anti-slip screw cap (10) and the fixing frame (5).

5. An improved torque wrench calibration device according to claim 1, characterized in that: The adjustment assembly comprises a threaded rod (15) rotatably mounted on both ends of the inner wall of the U-shaped frame (14); a matching slider (16) is threadedly connected to the threaded rod (15); one end of the threaded rod (15) penetrates the outer wall of the U-shaped frame (14) and is fixedly provided with a hand crank (19).

6. An improved torque wrench calibration device according to claim 5, characterized in that: The top of the slider (16) is slidably connected to a first guide groove (17) at the bottom of the stand (2), and the bottom of the slider (16) is slidably connected to a second guide groove (18) at the top of the U-shaped frame (14).

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