Torque wrench calibration device

Abstract

The utility model discloses a torque wrench calibration device in the technical field of torque wrench calibration, which comprises a detector, a display is arranged at the front end of the detector, a detection head is arranged at the upper end of the detector and is connected to a torque sensor in the detector, a connecting plug is arranged on the detection head, a driving head of a torque wrench is fixedly connected to the connecting plug in an inserted manner, and the connecting plug is connected with the display. The outer side of the detector is fixedly connected with a supporting table, the lower ends of the detector and the supporting table are fixedly connected with a plurality of non-slip mats, the device further comprises a torsion mechanism and a limiting mechanism, the torsion mechanism is connected to the detector, and the limiting mechanism is connected to the torsion mechanism. The torque wrench inspection device has the advantages that the rotary knob drives the first screw to rotate so as to adjust the horizontal position of the movable supporting frame on the transverse plate, then torque wrenches with different lengths can be inspected, the motor drives the second screw to rotate so as to drive the rotating frame to rotate, and the torque wrenches with different lengths can be inspected. And the operation is simple and convenient, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of torque wrench calibration technology, specifically to a torque wrench calibration device. Background Technology

[0002] A torque wrench, also known as a torque-adjustable wrench, is a type of wrench used when the tightness of screws and bolts is critical. A torque wrench allows the operator to apply a specific torque value. To ensure the accuracy and reliability of the torque value of the torque wrench, it is necessary to periodically use a torque wrench calibration device to test and calibrate the torque of the wrench.

[0003] In existing technologies, one method for torque wrench testing and calibration is a precision pressure tester based on a hydraulic system, which achieves accurate measurement by transmitting torque through liquid. Although this method has high testing accuracy, the equipment is bulky and expensive. Another method is to use a manual lever loading mechanism combined with dial readings for testing and calibration, but this method is easily affected by human factors. Some sensor-based testing instruments can only check torque wrenches of fixed specifications, which has certain limitations. Moreover, these testing devices also require manual adjustment and rotation of the wrench, making operation inconvenient. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing precision pressure testing instruments based on hydraulic systems are costly, manual testing yields unstable results, and sensor-based testing instruments have significant limitations in terms of measurement size.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A torque wrench calibration device includes a detector, a display at the front end of the detector, a detection head at the upper end of the detector connected to a torque sensor inside the detector, a connector on the detection head, a drive head of a torque wrench plugged into and fixed to the connector, a support platform fixed to the outside of the detector, and several anti-slip pads fixed to the lower ends of the detector and the support platform. It also includes a torsion mechanism and a limiting mechanism, the torsion mechanism being connected to the detector and the limiting mechanism being connected to the torsion mechanism.

[0007] The torsion mechanism includes a motor and a rotating frame. One end of the rotating frame is rotatably mounted on the detection head, and the motor is fixed to the front end of the support platform to drive the other end of the rotating frame to rotate.

[0008] The limiting mechanism includes a first screw and a movable support frame. The first screw rotates to drive the movable support frame to slide horizontally on the rotating frame to support the torque wrench. The upper end of the movable support frame is fixed with push plates that are spaced apart.

[0009] Furthermore, one end of the rotating frame is provided as an annular turntable, which is rotatably connected to the detection head and coaxial with the detection head. The other end of the rotating frame is provided as a horizontally distributed horizontal plate. The upper end of the horizontal plate is provided with a first sliding groove. The first screw is rotatably connected to the first sliding groove. One end of the first screw is fixedly connected to a knob that rotates and fits against the outside of the horizontal plate. The lower end of the movable support frame is fixedly connected to a first slider. The first slider is adapted to slide in the first sliding groove and is threadedly connected to the first screw.

[0010] Furthermore, the movable support frame is slidably fastened to the horizontal plate by an L-shaped structure symmetrically distributed at its lower end and integrated therewith.

[0011] Furthermore, mounting blocks are symmetrically fixed to the outer side of the movable support frame, and pressure plates are vertically slidably mounted on the two push plates. Connecting plates are symmetrically fixed to both ends of the pressure plates, and bolts are threaded onto the connecting plates and connected to the mounting blocks.

[0012] Furthermore, a second screw is fixedly connected to the output end of the motor, a second slider is threadedly connected to the second screw, a connecting block is fixedly connected to the upper end of the second slider, a connecting ball is fixedly connected to the upper end of the connecting block through a connecting shaft, a mounting base is fixedly connected to the lower end of the cross plate, the connecting block is movably disposed between the mounting base and the support platform, the mounting base is provided with a mounting groove penetrating its lower end, and the connecting ball is adapted to move within the mounting groove.

[0013] Furthermore, the support platform is provided with a second sliding groove, the second screw is horizontally rotatably connected to the second sliding groove, and the second slider is adapted to slide within the second sliding groove.

[0014] Furthermore, the upper end of the detection head is provided with a slot, the inner wall of the slot is provided with annular corrugations, and the outer wall of the connector is located within the slot.

[0015] The beneficial effects of this utility model by adopting the above structure are as follows:

[0016] 1: By rotating the first screw through the knob, the horizontal position of the movable support frame on the horizontal plate can be adjusted, thereby allowing for the inspection of torque wrenches of different lengths;

[0017] 2: The second screw is driven by a motor to rotate, which in turn drives the rotating frame to rotate, allowing the torque wrench to rotate for inspection. The operation is simple and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire machine of this utility model.

[0019] Figure 2 This is a schematic diagram of the connection of the detection head of this utility model.

[0020] Figure 3 Cross-sectional view of the components of this utility model Figure 1 .

[0021] Figure 4 Cross-sectional view of the components of this utility model Figure 2 .

[0022] Figure 5 This is a schematic diagram of the torsion mechanism component of this utility model.

[0023] Figure 6 This is a schematic diagram of the limiting mechanism component of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Detector, 101. Anti-slip mat, 102. Display, 103. Detection head, 104. Connector, 105. Slot, 2. Support platform, 201. Second slide rail, 3. Torsion mechanism, 301. Annular turntable, 302. Horizontal plate, 303. First slide rail, 304. Mounting base, 305. Mounting slot, 306. Motor, 307. Second screw, 308. Second slider, 309. Connecting block, 310. Connecting ball, 4. Limiting mechanism, 401. First screw, 402. Knob, 403. Movable support frame, 404. Push plate, 405. Mounting block, 406. Pressure plate, 407. Connecting plate, 408. Bolt. Detailed Implementation

[0026] like Figure 1-6 As shown, a torque wrench calibration device includes a detector 1, a display 102 at the front end of the detector 1, a detection head 103 at the upper end of the detector 1 connected to a torque sensor inside the detector 1, a connector 104 on the detection head 103, and a drive head of a torque wrench inserted and fixed into the connector 104. A slot 105 is provided at the upper end of the detection head 103, the inner wall of the slot 105 being annularly corrugated. The outer wall of the connector 104 is inserted and confined within the slot 105. Connectors 104 with square holes of different sizes can be inserted into the slot 105 to calibrate torque wrenches with drive heads of different sizes. The instrument 1 is equipped with a support platform 2 fixed to its outer side. Several anti-slip pads 101 are fixed to the lower ends of the instrument 1 and the support platform 2. The instrument also includes a torsion mechanism 3 and a limiting mechanism 4. The torsion mechanism 3 is connected to the instrument 1, and the limiting mechanism 4 is connected to the torsion mechanism 3. The drive head of one end of the torque wrench is inserted into the connector 104 for limiting and fixing. The limiting mechanism 4 limits the handle of the torque wrench. The torsion mechanism 3 drives the push plate 404 to push the torque wrench to rotate. The torque is then detected by the instrument 1. The torque detected on the display 102 of the instrument 1 is compared with the torque of the torque wrench digital display and then calibrated.

[0027] like Figure 3 , 6 The limiting mechanism 4 shown includes a first screw 401 and a movable support frame 403. The first screw 401 rotates to drive the movable support frame 403 to slide horizontally on the rotating frame to support the torque wrench. A push plate 404 with spaced intervals is fixedly connected to the upper end of the movable support frame 403. One end of the rotating frame is a ring-shaped turntable 301, which is rotatably connected to and coaxial with the detection head 103. The other end of the rotating frame is a horizontally distributed cross plate 302. A first sliding groove 303 is provided at the upper end of the cross plate 302. The first screw 401 is horizontally rotatably connected to the first sliding groove 303. A knob 402 that rotatably fits against the outside of the cross plate 302 is fixedly connected to one end of the first screw 401. A first slider is fixedly connected to the lower end of the movable support frame 403. The first slider slides within the first sliding groove 303 and is threadedly connected to the first screw 401. The movable support frame 403... The lower end of the L-shaped structure, symmetrically distributed and integrated with it, is slidably fastened to the horizontal plate 302, thereby improving the stability of the movable support frame 403 in horizontal movement on the horizontal plate 302. The movable support frame 403 is symmetrically fixed to the outer side of the movable support frame 403. The two push plates 404 are vertically slidably fitted with pressure plates 406. The two ends of the pressure plates 406 are symmetrically fixed to the connecting plates 407. Bolts 408 are threaded through the connecting plates 407 and threaded to the mounting blocks 405. The pressure plates 406 press down to fix the handle end of the torque wrench, preventing the handle of the torque wrench from lifting up during testing. According to the length of the torque wrench, the knob 402 is rotated to drive the movable support frame 403 to move on the horizontal plate 302, so that the handle of the torque wrench is placed on the movable support frame 403. After the pressure plates 406 are pressed down and pressed against the handle of the torque wrench, the pressure plates 406 are fixed with bolts 408, thus completing the support and limiting of the torque wrench.

[0028] like Figure 3-5The torsion mechanism 3 shown includes a motor 306 and a rotating frame. One end of the rotating frame is rotatably mounted on the detection head 103. The motor 306 is fixed to the front end of the support platform 2, driving the other end of the rotating frame to rotate. A second screw 307 is fixedly connected to the output end of the motor 306. A second slider 308 is threaded onto the second screw 307. A connecting block 309 is fixedly connected to the upper end of the second slider 308. A connecting ball 310 is fixedly connected to the upper end of the connecting block 309 via a connecting shaft. A mounting base 304 is fixedly connected to the lower end of the horizontal plate 302. The connecting block 309 is movably disposed between the mounting base 304 and the support platform 2. The base 304 has a mounting groove 305 extending through its lower end. The connecting ball 310 is adapted to move within the mounting groove 305. The support platform 2 has a second sliding groove 201. The second screw 307 is horizontally rotatably connected to the second sliding groove 201. The second slider 308 is adapted to slide within the second sliding groove 201. Driven by the motor 306, the second slider 308 moves laterally, thereby causing the connecting ball 310 to move within the mounting groove 305. Consequently, the mounting base 304 and the horizontal plate 302 rotate around the axis of the detection head 103, thereby causing the push plate 404 to push the torque wrench to rotate for torque detection.

[0029] In use, this utility model requires the size of the drive head at one end of the torque wrench to be tested. A connector 104, adapted to the size of the drive head, is inserted into the testing slot. The square hole on the connector 104 is fitted to the size of the drive head. The drive head of the torque wrench is then inserted into the connector 104. Based on the length of the torque wrench, the knob 402 is rotated, causing the first screw 401 to rotate. This, in turn, causes the first slider to slide within the first groove 303, which in turn causes the movable support frame 403 to move horizontally on the horizontal plate 302. The movable support frame 403 supports the handle of the torque wrench, and the pressure plate 406 is moved downwards to abut against the handle of the torque wrench. The pressure plate 406 is then fixed to the handle using bolts 408. The motor 306 outputs power... The second screw 307 rotates, which in turn drives the second slider 308 to slide in the second slide groove 201, which in turn drives the connecting block 309 to move horizontally on the support platform 2, which in turn drives the connecting ball 310 to move in the mounting groove 305 through the connecting shaft, which in turn drives the mounting base 304 through the connecting ball 310, which in turn drives the horizontal plate 302 to rotate around the axis of the detection head 103. The horizontal plate 302 drives the push plate 404 to move, which in turn drives the torque wrench to rotate. The torque generated by the rotation of the torque wrench is detected by the torque sensor connected to the detection head 103 in the detection instrument 1, and the specific torque value is obtained by the display 102. The torque value detected on the display 102 is compared with the torque value on the torque wrench's own digital display for comparison and calibration until the two values ​​are the same.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A torque wrench calibration device, comprising a detector (1), wherein a display (102) is provided at the front end of the detector (1), a detection head (103) is provided at the upper end of the detector (1) and connected to a torque sensor inside the detector (1), a connector (104) is provided on the detection head (103), a drive head of a torque wrench is inserted and fixed to the connector (104), a support platform (2) is fixedly connected to the outside of the detector (1), and a plurality of anti-slip pads (101) are fixedly connected to the lower ends of the detector (1) and the support platform (2), characterized in that: It also includes a torsion mechanism (3) and a limiting mechanism (4), wherein the torsion mechanism (3) is connected to the detector (1) and the limiting mechanism (4) is connected to the torsion mechanism (3); The torsion mechanism (3) includes a motor (306) and a rotating frame. One end of the rotating frame is rotatably mounted on the detection head (103), and the motor (306) is fixed to the front end of the support platform (2) to drive the other end of the rotating frame to rotate. The limiting mechanism (4) includes a first screw (401) and a movable support frame (403). The first screw (401) rotates to drive the movable support frame (403) to slide horizontally on the rotating frame to support the torque wrench. The upper end of the movable support frame (403) is fixed with push plates (404) spaced apart.

2. The torque wrench calibration device according to claim 1, characterized in that: One end of the rotating frame is provided with an annular turntable (301), which is rotatably connected to the detection head (103) and coaxial with the detection head (103). The other end of the rotating frame is provided with a horizontally distributed horizontal plate (302). The upper end of the horizontal plate (302) is provided with a first sliding groove (303). The first screw (401) is horizontally rotatably connected in the first sliding groove (303). One end of the first screw (401) is fixedly connected with a knob (402) that rotates and fits against the outside of the horizontal plate (302). The lower end of the movable support frame (403) is fixedly connected with a first slider. The first slider is adapted to slide in the first sliding groove (303) and is threadedly connected to the first screw (401).

3. The torque wrench calibration device according to claim 2, characterized in that: The movable support frame (403) is slidably fastened to the horizontal plate (302) by an L-shaped structure that is symmetrically distributed at the lower end and integrated with it.

4. A torque wrench calibration device according to any one of claims 1-3, characterized in that: The movable support frame (403) is symmetrically fixed to the outer side of the mounting block (405), and the two push plates (404) are vertically slidably fitted with pressure plates (406). The pressure plates (406) are symmetrically fixed to both ends of the pressure plates (406), and bolts (408) are threaded onto the connecting plates (407). The bolts (408) are threaded onto the mounting block (405).

5. A torque wrench calibration device according to claim 2, characterized in that: The output end of the motor (306) is fixedly connected to a second screw (307), and a second slider (308) is threadedly connected to the second screw (307). A connecting block (309) is fixedly connected to the upper end of the second slider (308), and a connecting ball (310) is fixedly connected to the upper end of the connecting block (309) through a connecting shaft. A mounting base (304) is fixedly connected to the lower end of the horizontal plate (302). The connecting block (309) is movably disposed between the mounting base (304) and the support platform (2). The mounting base (304) is provided with a mounting groove (305) that passes through its lower end, and the connecting ball (310) is adapted to move within the mounting groove (305).

6. A torque wrench calibration device according to claim 5, characterized in that: The support platform (2) is provided with a second slide groove (201), the second screw (307) is horizontally rotatably connected in the second slide groove (201), and the second slider (308) is adapted to slide in the second slide groove (201).

7. A torque wrench calibration device according to claim 1, characterized in that: The upper end of the detection head (103) is provided with a slot (105), the inner wall of the slot (105) is provided with annular corrugations, and the outer wall of the plug (104) is located inside the slot (105).

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