Measurement calibration device of dynamometer

Abstract

The utility model discloses a measuring and calibrating device for a dynamometer, and the device comprises a detection platform which is provided with a straight groove, and is fixedly connected with a supporting platform; the standard dynamometer is fixedly connected with the supporting table, the input end of the standard dynamometer is fixedly connected with a steel cable, and the steel cable is fixedly connected with a hanging ring; the pulley is connected with the detection table through a bearing, and the steel cable surrounds the pulley; the sliding block is arranged in the straight groove, the sliding block is fixedly connected with a height electric push rod, and a push rod body of the height electric push rod is fixedly connected with the supporting frame; and the adjusting screw rod and the bearing are connected with the supporting frame. The utility model relates to the technical field of metering and calibrating devices, in particular to a metering and calibrating device of a dynamometer. The technical problem to be solved by the utility model is to provide the measuring and calibrating device for the dynamometer, which is favorable for realizing equal-height arrangement of an input end of the dynamometer and an input end of a standard dynamometer, and the input ends of the dynamometer and the standard dynamometer are kept vertical to a steel rope, so that the calibration of the dynamometer is conveniently realized.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement and calibration devices, in particular to a measurement and calibration device for a dynamometer. Background Art

[0002] With the rapid development of society and the economy, dynamometers, portable measuring instruments used to measure various forces or loads, are now available in various categories, including working dynamometers and standard dynamometers, depending on their intended use. The primary indicators for evaluating dynamometer accuracy are repeatability (R) and stability (Sb). R reflects the variation in data obtained from multiple loading (unloading) cycles during a complete calibration process; Sb reflects the difference between the data obtained after a period of time and the previous data. To ensure the accuracy of dynamometers, more rational measurement methods are essential.

[0003] Prior art, for example, includes a utility model for an intelligent measurement and calibration device for a dynamometer, with authorization announcement number CN220104367U. The dynamometer to be tested can be clamped by a clamping assembly, and the hook of the dynamometer to be tested is connected to the hanging ring of the steel cable, so that the dynamometer to be tested can be connected to the standard dynamometer via the steel cable. A servo motor can drive the first screw to rotate, thereby driving the clamping assembly to move along the slide. During the movement, the pulley can serve as a guide. Since the dynamometer to be tested moves toward the standard dynamometer, data comparison is facilitated. Furthermore, the movement direction of the dynamometer to be tested can be adjusted by the steel cable and pulley, making the device smaller in size.

[0004] At present, there is still a lack of a device that can realize the setting of the input end of the dynamometer and the input end of the standard dynamometer at the same height, and the input ends of both remain perpendicular to the steel cable, so as to facilitate the calibration of the dynamometer. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dynamometer measurement and calibration device, which is conducive to achieving the equal height setting of the input end of the dynamometer and the input end of the standard dynamometer, and the input ends of both remain perpendicular to the steel cable, thereby facilitating the calibration of the dynamometer.

[0006] The utility model adopts the following technical solutions to achieve the purpose of the utility model:

[0007] A dynamometer calibration device, characterized in that it includes: a test table, the test table being provided with a straight slot and fixedly connected to a support table; a standard dynamometer fixedly connected to the support table, the input end of the standard dynamometer fixedly connected to a steel cable, the steel cable fixedly connected to a hanging ring; a pulley, the bearing of which is connected to the test table, the steel cable wrapped around the pulley; a slider disposed in the straight slot, the slider fixedly connected to a height electric push rod, the push rod of the height electric push rod fixedly connected to a support frame; an adjustment screw, the bearing of which is connected to the support frame, the two reverse-threaded sections of the adjustment screw being respectively threadedly connected to blocks, and the two blocks being respectively fixedly connected to L-shaped clamps. By using the height electric push rod, the input end height of the dynamometer can be adjusted after placement, so that the input end of the dynamometer is set at the same height as the input end of the standard dynamometer, facilitating calibration.

[0008] As a further limitation of this technical solution, the symmetrical blocks are each rotatably connected to one end of a connecting rod, and the other ends of the symmetrical connecting rods are each rotatably connected to an electric push rod seat. The electric push rod seat is fixedly connected to an electric push rod, and the push rod of the electric push rod passes through the electric push rod seat. The push rod of the electric push rod is fixedly connected to a clamping plate. The L-shaped clamping plate clamps the dynamometer and simultaneously drives the clamping plate toward the dynamometer. By operating the electric push rod, the L-shaped clamping plate and the clamping plate secure the dynamometer.

[0009] As a further limitation of the present technical solution, the electric push rod seat is fixedly connected to the long round rod, the support frame is fixedly connected to the guide plate, and the long round rod passes through the guide plate. By using the long round rod to pass through the guide plate, the straight line movement of the clamping plate is achieved.

[0010] As a further limitation of the present technical solution, a screw is provided in the straight groove, the screw bearing is connected to the detection platform, and the screw is threadedly connected to the slider. By adopting the screw, when the screw rotates, the slider moves.

[0011] As a further limitation of this technical solution, the inspection platform is provided with a motor slot, in which a motor is provided, the motor is fixedly connected to the inspection platform, and an output shaft of the motor is fixedly connected to the screw rod. The motor is driven to provide power for the movement of the L-shaped clamp.

[0012] As a further limitation of the present technical solution, the adjusting screw is fixedly connected to a handle. By adopting the handle, it is convenient to rotate the adjusting screw.

[0013] As a further limitation of the present technical solution, the block contacts the bottom plate of the support frame.

[0014] Compared with the related art, the dynamometer measurement and calibration device provided by the utility model has the following beneficial effects:

[0015] (1) This device uses a height electric push rod to adjust the input height of the dynamometer after it is placed, so that the input end of the dynamometer is set at the same height as the input end of the standard dynamometer, which facilitates calibration;

[0016] (2) This device uses L-shaped clamps and clamps to facilitate the fixation of the dynamometer, so that the dynamometer is centered on the support frame and the input end of the dynamometer and the input end of the standard dynamometer are perpendicular to the steel cable;

[0017] (3) The L-shaped clamp of the device clamps the dynamometer and drives the clamp to move toward the dynamometer. By operating the electric push rod, the L-shaped clamp and the clamp are fixed to the dynamometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 3 ;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0023] In the figure: 1. Pulley; 2. Steel cable; 3. Hanging ring; 4. Standard dynamometer; 5. Support platform; 6. Testing platform; 7. Straight slot; 8. Screw; 9. Motor; 10. Motor slot; 11. Handle; 12. Support frame; 13. Block; 14. Guide plate; 15. Adjustment screw; 16. Slider; 17. Height push rod; 18. Long round rod; 19. L-shaped clamp; 20. Clamp; 21. Push rod seat; 22. Connecting rod; 23. Push rod. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Embodiment 1: A dynamometer calibration device comprises: a test platform 6, the test platform 6 being provided with a straight slot 7 and fixedly connected to a support platform 5; a standard dynamometer 4 being fixedly connected to the support platform 5, the input end of the standard dynamometer 4 being fixedly connected to a steel cable 2, the steel cable 2 being fixedly connected to a hanging ring 3; a pulley 1 having a bearing connected to the test platform 6 and the steel cable 2 surrounding the pulley 1; a slider 16 disposed in the straight slot 7, the slider 16 being fixedly connected to a height electric push rod 17, the push rod of the height electric push rod 17 being fixedly connected to a support frame 12; an adjusting screw 15 having a bearing connected to the support frame 12, the two reverse threads of the adjusting screw 15 being respectively threadedly connected to a block 13, and the two blocks 13 being respectively fixedly connected to an L-shaped clamping plate 19. By using the height electric push rod 17, the input end height of the dynamometer can be adjusted after placement, so that the input end of the dynamometer is set at the same height as the input end of the standard dynamometer 4, facilitating calibration.

[0026] The model of the height electric push rod 17 is MNTL-105.

[0027] A screw rod 8 is provided in the straight groove 7, the screw rod 8 is bearing-connected to the detection platform 6, and the screw rod 8 is threadedly connected to the slider 16. By adopting the screw rod 8, when the screw rod 8 rotates, the slider 16 moves.

[0028] The detection platform 6 is provided with a motor slot 10, in which a motor 9 is provided. The motor 9 is fixedly connected to the detection platform 6, and the output shaft of the motor 9 is fixedly connected to the screw 8. The motor 9 is driven to provide power for the movement of the L clamping plate 19.

[0029] The model of the motor 9 is servo motor 60A6S-M01330.

[0030] The adjusting screw 15 is fixedly connected to the handle 11. By adopting the handle 11, it is convenient to rotate the adjusting screw 15.

[0031] The block 13 contacts the bottom plate of the support frame 12 .

[0032] The working principle of the dynamometer measurement and calibration device provided by the utility model is as follows:

[0033] In the initial state, if Figure 1 shown.

[0034] Place the dynamometer to be tested on the support frame 12, turn the handle 11, the handle 11 drives the adjusting screw 15 to rotate, the adjusting screw 15 drives the block 13 to move, and the block 13 drives the L-shaped clamp 19 to move, so that the L-shaped clamp 19 clamps the dynamometer so that the front end of the dynamometer contacts the short plate of the L-shaped clamp 19.

[0035] Connect the input end of the dynamometer to the hanging ring 3 to control the extension and retraction of the height electric push rod 17. The height electric push rod 17 drives the support frame 12, the adjusting screw 15, the handle 11, the block 13 and the L-shaped clamping plate 19 to move so that the steel cable 2 remains horizontal.

[0036] The motor 9 is controlled to rotate, and the motor 9 drives the screw 8 to rotate. The screw 8 drives the slider 16 to move along the straight groove 7. The slider 16 drives the height electric push rod 17, the support frame 12, the adjustment screw 15, the handle 11, the block 13 and the L-clamp 19 to move, so that the L-clamp 19 drives the steel cable 2 to move, so that the standard dynamometer 4 and the input end of the dynamometer are stretched, the tension is displayed, and the calibration of the dynamometer is realized.

[0037] Example 2: This example further elaborates on Example 1. The symmetrical blocks 13 are each rotatably connected to one end of a connecting rod 22. The other ends of the symmetrical connecting rods 22 are each rotatably connected to an electric push rod seat 21. The electric push rod seat 21 is fixedly connected to an electric push rod 23. The push rod of the electric push rod 23 passes through the electric push rod seat 21 and is fixedly connected to a clamping plate 20. The L-shaped clamping plate 19 clamps the dynamometer while driving the clamping plate 20 toward the dynamometer. By operating the electric push rod 23, the L-shaped clamping plate 19 and the clamping plate 20 are fixed to the dynamometer.

[0038] The model of the electric push rod 23 is mntg.

[0039] The electric push rod seat 21 is fixedly connected to the long round rod 18, and the support frame 12 is fixedly connected to the guide plate 14. The long round rod 18 passes through the guide plate 14. By adopting the long round rod 18 to pass through the guide plate 14, the straight line movement of the clamping plate 20 is achieved.

[0040] The working principle of the dynamometer measurement and calibration device provided by the utility model is as follows:

[0041] When the handle 11 is turned, the block 13 drives the connecting rod 22 to swing, the connecting rod 22 drives the electric push rod seat 21 to move, the electric push rod seat 21 drives the electric push rod 23 and the clamping plate 20 to move. After the L clamping plate 19 clamps the dynamometer, the electric push rod 23 is controlled to extend so that the clamping plate 20 contacts the dynamometer, and the front end of the dynamometer contacts the short plate of the L clamping plate 19, thereby clamping the dynamometer.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A force measuring instrument calibration device, comprising: A testing platform (6), wherein the testing platform (6) is provided with a straight groove (7), and the testing platform (6) is fixedly connected to the support platform (5); A standard dynamometer (4) is fixedly connected to the support platform (5); an input end of the standard dynamometer (4) is fixedly connected to a steel cable (2); and the steel cable (2) is fixedly connected to a hanging ring (3); A pulley (1) having a bearing connected to the detection platform (6), and the steel cable (2) surrounds the pulley (1); A slider (16) is disposed in the straight groove (7), the slider (16) is fixedly connected to a height electric push rod (17), and the push rod of the height electric push rod (17) is fixedly connected to the support frame (12); The adjusting screw (15) is connected to the support frame (12) via a bearing, and the two reverse threads of the adjusting screw (15) are respectively threadedly connected to the blocks (13), and the two blocks (13) are respectively fixedly connected to the L-shaped clamping plates (19).

2. The dynamometer calibration device according to claim 1, characterized in that: The symmetrical blocks (13) are respectively rotatably connected to one end of the connecting rod (22), and the other ends of the symmetrical connecting rods (22) are respectively rotatably connected to the electric push rod seats (21), the electric push rod seats (21) are fixedly connected to the electric push rods (23), the push rods of the electric push rods (23) pass through the electric push rod seats (21), and the push rods of the electric push rods (23) are fixedly connected to the splint (20).

3. The dynamometer measurement and calibration device according to claim 2, characterized in that: The electric push rod seat (21) is fixedly connected to the long round rod (18), the support frame (12) is fixedly connected to the guide plate (14), and the long round rod (18) passes through the guide plate (14).

4. The dynamometer measurement and calibration device according to claim 1, wherein: A screw rod (8) is provided in the straight groove (7), the screw rod (8) is connected to the detection platform (6) through a bearing, and the screw rod (8) is threadedly connected to the slider (16).

5. The dynamometer measurement and calibration device according to claim 4, characterized in that: The detection platform (6) is provided with a motor slot (10), a motor (9) is provided in the motor slot (10), the motor (9) is fixedly connected to the detection platform (6), and the output shaft of the motor (9) is fixedly connected to the screw rod (8).

6. The dynamometer measurement and calibration device according to claim 1, characterized in that: The adjusting screw (15) is fixedly connected to the handle (11).

7. The dynamometer measurement and calibration device according to claim 1, characterized in that: The block (13) contacts the bottom plate of the support frame (12).

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