Metering calibration device for mechanical instrument
By designing a metrological calibration device for mechanical instruments, including a housing, a cover plate, a connecting plate, a tension spring, a support plate, a moving lead screw and a clamp, the problem of the inability to replace the tension spring easily and the calibration structure cannot be fixed in the prior art, achieving high-precision calibration and long-term use stability.
Patent Information
- Application Number
- CN202421500498.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing metrological calibration device used for mechanical instruments is easily damaged after long-term use and multiple calibrations, and cannot be replaced easily. The calibration structure cannot be fixed, which is easy to loosen and leads to errors.
A metering calibration device including a housing, a cover plate, a connecting plate, a tension spring, a support plate, a moving lead screw and a clamp are designed. By setting the insertion plate and the card block, the cover plate is fixedly connected to the housing; by moving the lead screw and support plate, the zeroing and calibration of the pointer is achieved; by fixing the hook through the restriction block and restriction groove to prevent loosening.
It realizes convenient replacement of tension springs and fixes the calibration structure, avoids errors, and improves the calibration accuracy and service life of mechanical instruments.
Smart Images
Figure CN222671300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metrology and calibration, in particular to a metrology and calibration device for mechanical instruments. Background Art
[0002] Mechanical instrument calibration is mainly to calibrate mass, torque, pressure and other instruments. Common mechanical instruments include tension spring dynamometer, which is a device for measuring force through the relationship that the deformation of the spring is proportional to the external force. The hook at the bottom of the tension spring dynamometer is hooked on the object to be measured, so that its spring is pulled and stretched by the gravity of the object to be measured, and the gravity of the object to be measured is obtained.
[0003] At present, the metrological calibration devices for mechanical instruments in the prior art are usually used to calibrate the mechanical instruments themselves. When in use, when the number of times and time of use are long, the tension spring is constantly loaded and the reset elastic force is damaged, and the internal structure needs to be replaced. There is a problem that the internal tension spring cannot be replaced conveniently. In addition, when in use, the position of the connection of the tension spring is adjusted to calibrate the position of the pointer to zero. After the calibration structure is adjusted, it cannot be fixed, and it is easy to loosen during use, causing errors in the mechanical instrument. There is a problem that the calibration structure cannot be fixed. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a metrological calibration device for mechanical instruments, which solves the problems raised in the above-mentioned background technology.
[0006] (II) Technical solution
[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: comprising a shell, the upper end of the shell is fixedly connected with a connecting ring, one side of the shell is provided with a cover plate, the inside of the shell is provided with a connecting plate, the lower end of the connecting plate is fixedly connected with a tension spring, the lower end of the tension spring is fixedly connected with a support plate, one side of the support plate is threadedly connected with a moving screw, and the lower end of the moving screw is fixedly connected with a hook;
[0008] One side of the cover plate is fixedly connected with an insert plate, one side of the insert plate is plugged with a shell, a moving groove is provided inside the insert plate, one side of the moving groove is slidably connected with a card block, one side of the card block is slidably connected with the shell, one side of the moving groove is slidably connected with a push rod, and one side of the push rod is in contact with the card block;
[0009] A bearing on one side of the hook is connected to a fixed plate, and a shell is slidably connected to one side of the fixed plate. A limiting groove is provided on one side of the hook, and a limiting block is slidably connected to one side of the limiting groove. A sliding groove is provided on one side of the fixed plate, and a limiting block is slidably connected to one side of the sliding groove. A third supporting spring is fixedly connected inside the sliding groove, and one end of the third supporting spring is fixedly connected to the limiting block.
[0010] Optionally, the tension spring is inside the shell, one side of the support plate is slidably connected to the shell, one side of the cover plate is in contact with the support plate and the connecting plate, one side of the shell is fixedly connected to a scale plate, and one side of the scale plate is slidably connected to a pointer.
[0011] Optionally, the movable groove extends to the inside of the cover plate, the movable groove fits closely with the clamping block, a second supporting spring is fixedly connected to one side of the movable groove, and one end of the second supporting spring is fixedly connected to the clamping block.
[0012] Optionally, a support block is slidably connected inside the shell, the upper end of the support block is in contact with the connecting plate, one end of the support block is fixedly connected to a first support spring, and one end of the first support spring is fixedly connected to the shell.
[0013] Optionally, a limiting rod is fixedly connected to the upper end of the fixing plate, a support plate is inserted into one side of the limiting rod, a limiting plate is fixedly connected to the upper end of the support plate, and one side of the limiting plate is in a groove set inside the shell.
[0014] Optionally, one side of the limiting block is closely fitted with the slide groove, and the other side of the limiting block is closely fitted with the limiting groove. A movable groove is opened on one side of the shell, a pointer is slidably connected to one side of the movable groove, and a connecting rod is fixedly connected to one side of the pointer, and one end of the connecting rod is fixedly connected to a support plate.
[0015] The utility model provides a measurement and calibration device for mechanical instruments, which has the following beneficial effects:
[0016] 1. The metrological calibration device for mechanical instruments connects the cover plate to the shell by setting a plug plate, and fixes the plug plate to the shell by setting a clamping block, thereby fixing the cover plate to the shell, and moving the clamping block by setting a push rod, a second supporting spring, and a moving groove, and fixing and restricting the connecting plate by setting a first supporting spring and a supporting block.
[0017] 2. The metrological calibration device for mechanical instruments drives the support plate to move by setting a movable screw, thereby driving the pointer to return to zero, fixes the hook by setting a limiting block and a limiting groove, thereby fixing the movable screw, and drives the limiting block to move by setting a third supporting spring and a sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0019] Figure 2 It is a structural schematic diagram of the utility model in front view section;
[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the structure with a partial enlargement at the center;
[0021] Figure 4 It is a structural schematic diagram of the left side section of the utility model;
[0022] Figure 5 It is a schematic diagram of the structure of the utility model viewed from above in cross section 1;
[0023] Figure 6 It is a schematic diagram of the structure of the second cross-section viewed from above of the utility model.
[0024] In the figure: 1. shell; 2. support block; 3. first support spring; 4. support plate; 5. limiting rod; 6. hook; 7. movable screw; 8. limiting plate; 9. tension spring; 10. slide groove; 11. connecting plate; 12. connecting ring; 13. limiting groove; 14. fixed plate; 15. connecting rod; 16. movable groove; 17. pointer; 18. plug plate; 19. cover plate; 20. push rod; 21. block; 22. movable groove; 23. second support spring; 24. scale plate; 25. limiting block; 26. third support spring. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0026] Example 1
[0027] See also Figures 1 to 6The utility model provides a technical solution: a metrological calibration device for mechanical instruments, comprising a shell 1, a scale plate 24 is fixedly connected to one side of the shell 1, a pointer 17 is slidably connected to one side of the scale plate 24, a support block 2 is slidably connected to the inside of the shell 1, one end of the support block 2 is fixedly connected to a first support spring 3, one end of the support block 2 is fixedly connected to the first support spring 3, one end of the first support spring 3 is fixedly connected to the shell 1, the upper end of the shell 1 is fixedly connected to a connecting ring 12, a cover plate 19 is provided on one side of the shell 1, a connecting plate 11 is provided inside the shell 1, the upper end of the support block 2 is in contact with the connecting plate 11, the lower end of the connecting plate 11 is fixedly connected to a tension spring 9, the tension spring 9 is inside the shell 1, the lower end of the tension spring 9 is fixedly connected to a support plate 4, one side of the cover plate 19 is in contact with the support plate 4 and the connecting plate 11, one side of the support plate 4 is slidably connected to the shell 1, one side of the support plate 4 is threadedly connected to a moving screw 7, the lower end of the moving screw 7 The end is fixedly connected with a hook 6, one side of the cover plate 19 is fixedly connected with an insert plate 18, one side of the insert plate 18 is plugged with a shell 1, a movable groove 22 is opened inside the insert plate 18, and the movable groove 22 extends to the inside of the cover plate 19, one side of the movable groove 22 is fixedly connected with a second supporting spring 23, one side of the movable groove 22 is slidably connected with a card block 21, the movable groove 22 is closely fitted with the card block 21, one end of the second supporting spring 23 is fixedly connected with the card block 21, and one side of the card block 21 is slidably connected with the shell 1 A push rod 20 is slidably connected to one side of the movable groove 22, and one side of the push rod 20 contacts the block 21. By setting the plug plate 18, the cover plate 19 is connected to the shell 1. By setting the block 21, the plug plate 18 is fixedly connected to the shell 1, so that the cover plate 19 is fixed to the shell 1. By setting the push rod 20, the second support spring 23, and the movable groove 22, the block 21 is moved. By setting the first support spring 3 and the support block 2, the connecting plate 11 is fixedly restricted.
[0028] During use, after long-term use and multiple calibrations, the tension spring 9 is damaged and cannot be used again. The push rod 20 is pushed toward the middle, and the push block 21 is moved in the movable groove 22, so that the block 21 is retracted into the plug plate 18, and the block 21 is separated from the shell 1, so that the cover plate 19 and the shell 1 can be separated, and the support block 2 is pressed outward to make the support block 2 enter the shell 1, so that the connecting plate 11 loses the support of the support block 2, and the connecting plate 11 and the fixed plate 14 are pulled out of the shell 1, so that the internal tension spring 9 is taken out and disassembled and replaced, thereby achieving the purpose of convenient replacement of the internal tension spring 9.
[0029] Example 2
[0030] See also Figures 1 to 6The utility model provides a technical solution: a metrological calibration device for mechanical instruments, comprising a shell 1, a movable groove 16 is opened on one side of the shell 1, a pointer 17 is slidably connected to one side of the movable groove 16, a connecting rod 15 is fixedly connected to one side of the pointer 17, a connecting ring 12 is fixedly connected to the upper end of the shell 1, a cover plate 19 is arranged on one side of the shell 1, a connecting plate 11 is arranged inside the shell 1, a tension spring 9 is fixedly connected to the lower end of the connecting plate 11, a support plate 4 is fixedly connected to the lower end of the tension spring 9, a limiting plate 8 is fixedly connected to the upper end of the support plate 4, one side of the limiting plate 8 is in a groove arranged inside the shell 1, one end of the connecting rod 15 is fixedly connected to the support plate 4, a movable lead screw 7 is threadedly connected to one side of the support plate 4, a hook 6 is fixedly connected to the lower end of the movable lead screw 7, a fixed plate 14 is connected to the upper end of the fixed plate 14 by a bearing, A limiting rod 5 is connected, a support plate 4 is inserted on one side of the limiting rod 5, a housing 1 is slidably connected to one side of the fixing plate 14, a limiting groove 13 is provided on one side of the hook 6, a limiting block 25 is slidably connected to one side of the limiting groove 13, a sliding groove 10 is provided on one side of the fixing plate 14, a limiting block 25 is slidably connected to one side of the sliding groove 10, one side of the limiting block 25 is closely fitted with the sliding groove 10, and the other side of the limiting block 25 is closely fitted with the limiting groove 13, a third supporting spring 26 is fixedly connected inside the sliding groove 10, and one end of the third supporting spring 26 is fixedly connected to the limiting block 25, and the supporting plate 4 is driven to move by setting the moving screw 7, thereby driving the pointer 17 to return to zero, and the hook 6 is fixed by setting the limiting block 25 and the limiting groove 13, thereby fixing the moving screw 7, and the limiting block 25 is driven to move by setting the third supporting spring 26 and the sliding groove 10.
[0031] After long-term use, the tension spring 9 is used many times, so that the tension spring 9 is stretched, so that the pointer 17 cannot correspond to the initial scale, and the hook 6 is rotated to drive the movable screw 7 to rotate, thereby driving the support plate 4 to move up and down, thereby driving the pointer 17 to move in the movable groove 16 through the connecting rod 15, so that the pointer 17 corresponds to the initial scale of the scale plate 24. After calibration, the limiting block 25 is pushed in the slide groove 10 through the third support spring 26, so that the limiting block 25 is inserted into the limiting groove 13, and the hook 6 is fixed, thereby fixing the movable screw 7 to prevent rotation. By setting the limiting plate 8 and the limiting rod 5, the position of the fixed plate 14 is limited, and the extended length of the fixed plate 14 is limited, thereby achieving the purpose of fixing the calibration structure.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A metrological calibration device for mechanical instruments, comprising a housing (1), characterized in that: The upper end of the shell (1) is fixedly connected to a connecting ring (12); a cover plate (19) is provided on one side of the shell (1); a connecting plate (11) is provided inside the shell (1); a tension spring (9) is fixedly connected to the lower end of the connecting plate (11); a support plate (4) is fixedly connected to the lower end of the tension spring (9); a movable lead screw (7) is threadedly connected to one side of the support plate (4); and a hook (6) is fixedly connected to the lower end of the movable lead screw (7); One side of the cover plate (19) is fixedly connected to an insert plate (18), one side of the insert plate (18) is plugged with a housing (1), a movable groove (22) is provided inside the insert plate (18), one side of the movable groove (22) is slidably connected to a clamping block (21), one side of the clamping block (21) is slidably connected to the housing (1), one side of the movable groove (22) is slidably connected to a push rod (20), and one side of the push rod (20) is in contact with the clamping block (21); A bearing on one side of the hook (6) is connected to a fixed plate (14), one side of the fixed plate (14) is slidably connected to a housing (1), a limiting groove (13) is provided on one side of the hook (6), one side of the limiting groove (13) is slidably connected to a limiting block (25), a sliding groove (10) is provided on one side of the fixed plate (14), one side of the sliding groove (10) is slidably connected to a limiting block (25), a third supporting spring (26) is fixedly connected inside the sliding groove (10), and one end of the third supporting spring (26) is fixedly connected to the limiting block (25).
2. A metrological calibration device for mechanical instruments according to claim 1, characterized in that: The tension spring (9) is located inside the housing (1); one side of the support plate (4) is slidably connected to the housing (1); one side of the cover plate (19) is in contact with the support plate (4) and the connecting plate (11); one side of the housing (1) is fixedly connected to a scale plate (24); and one side of the scale plate (24) is slidably connected to a pointer (17).
3. A metrological calibration device for mechanical instruments according to claim 1, characterized in that: The movable groove (22) extends to the inside of the cover plate (19), the movable groove (22) closely fits with the clamping block (21), one side of the movable groove (22) is fixedly connected to a second support spring (23), and one end of the second support spring (23) is fixedly connected to the clamping block (21).
4. A metrological calibration device for mechanical instruments according to claim 1, characterized in that: A support block (2) is slidably connected inside the shell (1), the upper end of the support block (2) is in contact with the connecting plate (11), one end of the support block (2) is fixedly connected to a first support spring (3), and one end of the first support spring (3) is fixedly connected to the shell (1).
5. A metrological calibration device for mechanical instruments according to claim 1, characterized in that: The upper end of the fixing plate (14) is fixedly connected to a limiting rod (5), one side of the limiting rod (5) is plugged with a supporting plate (4), the upper end of the supporting plate (4) is fixedly connected to a limiting plate (8), and one side of the limiting plate (8) is in a groove provided inside the housing (1).
6. A metrological calibration device for mechanical instruments according to claim 1, characterized in that: One side of the limiting block (25) is closely fitted with the slide groove (10), and the other side of the limiting block (25) is closely fitted with the limiting groove (13). A movable groove (16) is provided on one side of the housing (1), and a pointer (17) is slidably connected to one side of the movable groove (16). One side of the pointer (17) is fixedly connected to a connecting rod (15), and one end of the connecting rod (15) is fixedly connected to a support plate (4).