An instrument maintenance test platform

Abstract

The utility model discloses an instrument and meter overhauls test platform, including longitudinal frame, detection adjusting mechanism, position joint mechanism and joint auxiliary mechanism, detection adjusting mechanism includes elevating stand, lateral frame, longitudinal board, adjusting hole, horizontal bar, mounting bush and test assembly, position joint mechanism includes joint pipe, joint rod, annular step groove, intrudes spring rod, pressure block, rotation cover and plugging plate, through the cooperation of adjusting hole and joint rod, makes elevating stand be able to accurate positioning, ensures that test assembly can test in proper height and position, has promoted the accuracy of operation and the adjustability, mounting bush is installed on horizontal bar and slides, has provided flexible horizontal adjustment function, through the design of joint pipe, joint rod and annular step groove etc. component, has provided firm joint and unlocking mechanism, the cooperation of intruding spring rod and rotation cover makes joint more stable, and the design of elastic force when unlocking simplifies the dismounting process, has improved the convenience of operation.

Description

Technical Field

[0001] This utility model relates to the field of instrument testing technology, and more specifically, it relates to an instrument maintenance and testing platform. Background Technology

[0002] Traditional testing platforms typically employ fixed or single-dimensional adjustment mechanisms, lacking multi-dimensional flexibility. Testing components can often only be adjusted vertically or horizontally, failing to achieve precise positioning in three-dimensional space. When faced with irregularly shaped or varying-sized instruments, it is difficult to find the optimal testing position, easily leading to blind spots or decreased testing accuracy.

[0003] In conventional equipment, each adjustment usually requires the use of multiple tools such as wrenches and screwdrivers. First, the fixing bolts are loosened, then the detection component is moved manually, and finally the bolts are tightened again. This operation is not only time-consuming, but also requires the operator to have certain technical experience. Otherwise, it is easy to cause the detection component to be inaccurate in position or not securely fixed. Especially when it is necessary to frequently adjust different models of instruments, this complicated adjustment process seriously reduces work efficiency.

[0004] Traditional lifting and fixing structures typically use mechanical locking methods such as bolt locking or gear slots, which are complex and time-consuming to operate. Each time the height is adjusted, the locking device needs to be completely released, adjusted to the correct position, and then locked again. The whole process may require multiple attempts to reach the ideal height. This method is not only inefficient, but also prone to causing the detection component to suddenly slide down due to improper operation, resulting in equipment damage or safety accidents. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides an instrument and meter maintenance and testing platform to solve the technical problems mentioned in the background art, such as the inconvenience of adjusting the position of the detection components and the inconvenience of lifting, fixing or disassembling.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an instrument and meter repair and testing platform, comprising a longitudinal frame, a detection and adjustment mechanism, a position locking mechanism, and a locking auxiliary mechanism. The detection and adjustment mechanism includes a lifting frame, a side frame, a longitudinal plate, adjustment holes, a transverse rod, a mounting sleeve, and a testing component. The longitudinal plate is installed on both sides of the longitudinal frame, the side frame is installed on both sides of the lifting frame, the locking tube is installed on the side frame, multiple sets of adjustment holes are set on the longitudinal plate, and the locking rod can pass through different adjustment holes to engage with the locking tube, fixing the lifting frame in the required position. The transverse rod is installed on the lifting frame, and the mounting sleeve is installed on the top of the testing component, slidingly mounted on the transverse rod. The position locking mechanism includes a locking tube, a locking rod, an annular stepped groove, an insertion spring rod, a pressure block, a rotating sleeve, and a sealing plate. The annular stepped groove is set on the side wall of the locking rod, the insertion spring rod is installed on the outer wall of the locking tube, the rotating sleeve is limited and rotated on the outer wall of the locking tube, and the sealing plate is installed on the top end of the rotating sleeve, pressing the sealing plate against one end of the insertion spring rod, causing the insertion spring rod to extend into the annular stepped groove.

[0009] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes a connecting plate, a pair of shrink blocks, a pair of shrink springs, a bottom ball block, a threaded sleeve, and a rubber ring. The connecting plate is installed at the bottom end of the side wall of the snap-fit ​​tube and is fixedly installed on one end face of the side frame. Multiple sets of shrink blocks are circumferentially and radially slidably installed at the top end of the connecting plate, and the shrink blocks are arranged in pairs. The shrink springs are installed between the pairs of shrink blocks. The bottom ball block is installed at the bottom end of the rotating sleeve. The bottom ball block passes through the shrink block assembly in sequence to make the rotating sleeve rotate stably. The threaded sleeve is installed on the outer wall of the snap-fit ​​tube, and the rubber ring is installed at the bottom end of the threaded sleeve. The rubber ring can press against the pressure block to fix the pressure block on the side wall of the snap-fit ​​tube.

[0010] The present invention is further configured such that a base plate is installed at the bottom end of the longitudinal frame, and a mounting bracket is installed on the top end surface of the base plate. The mounting bracket connects the base plate and the conveyor belt assembly to form a stable working platform, providing reliable underlying support for instrument testing.

[0011] The present invention is further configured such that a conveyor belt assembly is installed at the top end of the mounting bracket, and the instrument to be tested is placed on the conveyor belt assembly. The conveyor belt assembly realizes automatic transport and precise positioning of the instrument to be tested, improves work efficiency, and reduces the potential damage risk caused by manual handling.

[0012] The present invention is further configured such that a locking bolt is installed on the mounting sleeve, and the locking bolt can pass through the mounting sleeve to fix the mounting sleeve to the horizontal bar. The locking bolt passes through the mounting sleeve and is fixed to the horizontal bar to prevent the mounting sleeve from sliding during the test and to ensure the stability of the test position.

[0013] The present invention is further configured such that a detection line is installed at the bottom end of the test component, and the detection line can pass through the lifting frame and lead to the conveyor belt component. The detection line connects the test component and the instrument under test and transmits test signals. The design of the wiring method through the lifting frame makes the connection neater and more orderly.

[0014] The present invention is further configured such that a centripetal rail is installed at the top end of the connecting plate, and the shrink block is configured to slide centripetally on the centripetal rail. The centripetal rail guides the shrink block to slide centripetally, ensuring the accuracy and stability of the shrink block's movement.

[0015] The present invention is further configured such that an ejector spring is installed inside the locking tube, and one end of the locking rod extends into the locking tube to compress the ejector spring. When unlocking, the ejector spring provides elastic force to push out the locking rod, which simplifies the disassembly process and improves the ease of operation.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an instrument and meter maintenance and testing platform, which has the following beneficial effects:

[0018] This utility model features a detection and adjustment mechanism. Through the cooperation of the adjustment hole and the locking rod, the lifting frame can be precisely positioned, ensuring that the test components can be tested at the appropriate height and position, thus improving the accuracy and adjustability of the operation. The mounting sleeve slides on the horizontal bar, providing flexible lateral adjustment. At the same time, the locking bolt design ensures stability and avoids positional errors during testing. The bottom detection lines are neatly and orderly laid out, avoiding cable interference and improving testing efficiency and safety.

[0019] This utility model is equipped with a position locking mechanism. Through the design of components such as locking tube, locking rod and annular stepped groove, it provides a stable locking and unlocking mechanism. The cooperation between the inserted spring rod and the rotating sleeve makes the locking more secure, and the elastic force design during unlocking simplifies the disassembly process and improves the convenience of operation. At the same time, the sealing plate effectively presses against the spring rod to ensure the stability and safety of the entire locking system.

[0020] This utility model is equipped with a snap-fit ​​auxiliary mechanism. Through the structure of the shrink block, the shrink spring and the bottom ball block, the smooth rotation of the rotating sleeve is ensured, which enhances the stability and accuracy of the entire snap-fit ​​process. The design of the threaded sleeve and the rubber ring enhances the firmness of the snap-fit ​​tube and the ease of operation. The setting of the connecting plate and the centripetal rail ensures the precise sliding of the shrink block, further improving the performance of the snap-fit ​​auxiliary mechanism. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the device from a side view.

[0023] Figure 3 This is a schematic diagram of the structure of the back side of the device in this utility model;

[0024] Figure 4 This is a schematic diagram of the position locking mechanism and locking auxiliary mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the position locking mechanism and the locking auxiliary mechanism in this utility model.

[0026] In the diagram: 1. Longitudinal frame; 2. Lifting frame; 3. Lateral frame; 4. Longitudinal plate; 5. Adjustment hole; 6. Transverse rod; 7. Mounting sleeve; 8. Test assembly; 9. Clip-on pipe; 10. Clip-on rod; 11. Annular stepped groove; 12. Extension spring rod; 13. Pressure block; 14. Rotating sleeve; 15. Sealing plate; 16. Connecting plate; 17. Reduction block; 18. Reduction spring; 19. Bottom ball block; 20. Threaded sleeve; 21. Rubber ring; 22. Base plate; 23. Mounting bracket; 24. Conveyor belt assembly; 25. Locking bolt; 26. Detection line; 27. Centripetal rail; 28. Push-out spring. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5An instrument maintenance and testing platform includes a longitudinal frame 1, a detection and adjustment mechanism, a position locking mechanism, and a locking auxiliary mechanism. The detection and adjustment mechanism includes a lifting frame 2, a side frame 3, a longitudinal plate 4, adjustment holes 5, a transverse rod 6, a mounting sleeve 7, and a testing assembly 8. The longitudinal plate 4 is installed on both sides of the longitudinal frame 1, the side frame 3 is installed on both sides of the lifting frame 2, and the locking tube 9 is installed on the side frame 3. Multiple sets of adjustment holes 5 are provided on the longitudinal plate 4. The locking rod 10 can pass through different adjustment holes 5 and engage with the locking tube 9 to fix the lifting frame 2 in the required position. The transverse rod 6 is installed on the lifting frame. 2. The mounting sleeve 7 is installed on the top of the test assembly 8. The mounting sleeve 7 is slidably installed on the transverse rod 6. The position locking mechanism includes a locking tube 9, a locking rod 10, an annular stepped groove 11, an extension spring rod 12, a pressure block 13, a rotating sleeve 14, and a sealing plate 15. The annular stepped groove 11 is provided on the side wall of the locking rod 10. The extension spring rod 12 is installed on the outer wall of the locking tube 9. The rotating sleeve 14 is limited to rotate and installed on the outer wall of the locking tube 9. The sealing plate 15 is installed on the top end of the rotating sleeve 14. The sealing plate 15 presses against one end of the extension spring rod 12, so that the extension spring rod 12 extends into the annular stepped groove 11.

[0031] In this embodiment, according to the specifications and height requirements of the instrument to be tested, the operator selects an adjustment hole 5 of appropriate height on the longitudinal plate 4, passes the locking rod 10 through the selected adjustment hole 5, and engages it with the locking tube 9 on the side frame 3, thereby fixing the lifting frame 2 at the required vertical height position. By selecting different height adjustment holes 5, the height of the lifting frame 2 can be flexibly adjusted. Next, the position of the mounting sleeve 7 is adjusted by sliding on the transverse rod 6 on the lifting frame 2. The mounting sleeve 7 is connected to the test component 8 and can move left and right along the transverse rod 6 to adjust to the required horizontal position. The test signal is connected to the instrument to be tested on the conveyor belt through the test line 26 at the bottom of the test component 8, completing the test preparation work. After the locking rod 10 passes through the adjustment hole 5 on the longitudinal plate 4, the locking rod 10 engages with the locking tube 9. The annular stepped groove 11 on the side wall of the locking rod 10 At this time, align the spring rod 12 extending onto the outer wall of the locking sleeve 9, and by rotating the rotating sleeve 14, move the sealing plate 15 at its top to one end of the spring rod 12 and apply pressure to it, causing the spring rod 12 to extend into the annular stepped groove 11, forming a mechanical locking mechanism, so that the locking rod 10 is firmly locked in the locking sleeve 9, preventing the lifting frame 2 from changing height during the testing process. The depth to which the spring rod 12 is embedded in the annular stepped groove 11 is determined by the pressure applied by the sealing plate 15, and the position of the sealing plate 15 is precisely controlled by the rotation angle of the rotating sleeve 14 to ensure the best locking effect.

[0032] The snap-fit ​​auxiliary mechanism includes a connecting plate 16, a pair of shrink blocks 17, a pair of shrink springs 18, a bottom ball block 19, a threaded sleeve 20, and a rubber ring 21. The connecting plate 16 is installed at the bottom end of the side wall of the snap-fit ​​tube 9 and is fixedly installed on one end face of the side frame 3. Multiple sets of pair of shrink blocks 17 are circumferentially slidably installed at the top end of the connecting plate 16, and the pair of shrink blocks 17 are arranged in pairs. The pair of shrink springs 18 are installed between the pairs of shrink blocks 17. The bottom ball block 19 is installed at the bottom end of the rotating sleeve 14. The bottom ball block 19 passes through the pair of shrink blocks 17 in sequence to make the rotating sleeve 14 rotate stably. The threaded sleeve 20 is installed on the outer wall of the snap-fit ​​tube 9, and the rubber ring 21 is installed at the bottom end of the threaded sleeve 20. The rubber ring 21 can press against the pressure block 13 to fix the pressure block 13 on the side wall of the snap-fit ​​tube 9.

[0033] In this embodiment, the connecting plate 16 is fixedly installed on the end face of the side frame 3, and a centripetal rail 27 is provided on its top. Multiple pairs of retractable blocks 17 slide centripetally on the centripetal rail 27. Retractable springs 18 are installed between the pairs of retractable blocks 17 to provide centripetal contraction force. When the bottom ball block 19 at the bottom of the rotating sleeve 14 passes through the retractable block 17 assembly, the retractable blocks 17 form an annular clamping of the bottom ball block 19 under the action of the retractable springs 18, making the rotation of the rotating sleeve 14 more stable and precise. At the same time, the threaded sleeve 20 is installed on the outer wall of the clamping tube 9, and its position can be adjusted by rotation, so that the rubber ring 21 at its bottom presses against the pressure block 13. When the rubber ring 21 applies pressure, it further enhances the control of the extended spring rod 12 and prevents it from loosening due to vibration during the test.

[0034] Please see Figures 1-5 As a supplementary embodiment of an instrument and meter maintenance and testing platform for the detection and adjustment mechanism, position locking mechanism and locking auxiliary mechanism: A base plate 22 is installed at the bottom end of the longitudinal frame 1, and a mounting bracket 23 is installed on the top end surface of the base plate 22. A conveyor belt assembly 24 is installed at the top end of the mounting bracket 23, and the instrument to be tested is placed on the conveyor belt assembly 24. A locking bolt 25 is installed on the mounting sleeve 7, and the locking bolt 25 can pass through the mounting sleeve 7 to fix the mounting sleeve 7 to the transverse rod 6. A detection line 26 is installed at the bottom end of the test assembly 8, and the detection line 26 can pass through the lifting frame 2 to lead to the conveyor belt assembly 24. A centripetal rail 27 is installed at the top end of the connecting plate 16, and the shrink block 17 is set to slide centripetally on the centripetal rail 27. A push-out spring 28 is installed inside the locking tube 9, and one end of the locking rod 10 extends into the locking tube 9 to compress the push-out spring 28.

[0035] More specifically, based on the dimensions of the instrument to be tested, a suitable adjustment hole 5 is selected on the longitudinal plate 4. The locking rod 10 is passed through the adjustment hole 5 and engaged with the locking tube 9 to initially determine the height position of the lifting frame 2. Through the position locking mechanism, the rotating sleeve 14 is rotated to press the sealing plate 15 against the extending spring rod 12, causing the extending spring rod 12 to extend into the annular stepped groove 11 of the locking rod 10, locking the vertical position of the lifting frame 2. The bottom ball block 19 in the locking auxiliary mechanism passes through the counterweight block 17 assembly. Under the action of the counterweight spring 18, the counterweight block 17 clamps the bottom ball block 19, enhancing the rotation. The rotational stability of the rotating sleeve 14 is improved, and the position of the threaded sleeve 20 is adjusted so that the rubber ring 21 presses against the pressure block 13, further enhancing the locking effect. The sleeve 7 is slidably installed on the horizontal bar 6 on the lifting frame 2 to adjust the horizontal position of the test assembly 8 so that it is accurately aligned with the instrument to be tested. Then, the sleeve 7 is fixed by the locking bolt 25. The test line 26 at the bottom of the test assembly 8 passes through the lifting frame 2 and connects to the instrument to be tested on the conveyor belt to establish an electrical connection. The test assembly 8 performs various parameter tests and functional tests on the instrument to complete the maintenance test task.

[0036] In summary, during the use or operation of the overall equipment: When it is necessary to test and adjust the mechanism, according to the specifications and height requirements of the instrument to be tested, the operator selects an adjustment hole 5 of appropriate height on the longitudinal plate 4, passes the locking rod 10 through the selected adjustment hole 5, and engages it with the locking tube 9 on the side frame 3, thereby fixing the lifting frame 2 at the required vertical height position. By selecting different height adjustment holes 5, the height of the lifting frame 2 can be flexibly adjusted. Next, the position of the mounting sleeve 7 is adjusted by sliding it on the transverse bar 6 on the lifting frame 2. The mounting sleeve 7 is connected to the test component 8 and can be moved left and right along the transverse bar 6 to adjust to the required horizontal position. The test signal is connected to the instrument to be tested on the conveyor belt through the test line 26 at the bottom of the test component 8, completing the test preparation work.

[0037] When the position locking mechanism is in operation, after the locking rod 10 passes through the adjustment hole 5 on the longitudinal plate 4, the locking rod 10 engages with the locking tube 9. The annular stepped groove 11 on the side wall of the locking rod 10 is aligned with the extension spring rod 12 on the outer wall of the locking tube 9. By rotating the rotating sleeve 14, the sealing plate 15 at its top moves to one end of the extension spring rod 12 and applies pressure to it, causing the extension spring rod 12 to extend into the annular stepped groove 11, forming a mechanical locking mechanism. This securely locks the locking rod 10 in the locking tube 9, preventing the lifting frame 2 from changing height during the detection process. The depth to which the extension spring rod 12 is embedded in the annular stepped groove 11 is determined by the pressure applied by the sealing plate 15. The position of the sealing plate 15 is precisely controlled by the rotation angle of the rotating sleeve 14 to ensure optimal locking effect.

[0038] When the clamping auxiliary mechanism is required to operate, the connecting plate 16 is fixedly installed on the end face of the side frame 3, and a centripetal rail 27 is provided on its top. Multiple pairs of collapsible blocks 17 slide centripetally on the centripetal rail 27. Collapsible springs 18 are installed between the pairs of collapsible blocks 17 to provide centripetal contraction force. When the bottom ball block 19 at the bottom of the rotating sleeve 14 passes through the collapsible block 17 assembly, the collapsible blocks 17 form annular clamping of the bottom ball block 19 under the action of the collapsible springs 18, making the rotation of the rotating sleeve 14 more stable and precise. At the same time, the threaded sleeve 20 is installed on the outer wall of the clamping tube 9, and its position can be adjusted by rotation, so that the rubber ring 21 at its bottom presses against the pressure block 13. When the rubber ring 21 applies pressure, it further enhances the control of the extended spring rod 12 and prevents it from loosening due to vibration during the test.

[0039] Based on the dimensions of the instrument to be tested, select a suitable adjustment hole 5 on the longitudinal plate 4, pass the locking rod 10 through the adjustment hole 5 to engage with the locking tube 9, and initially determine the height position of the lifting frame 2. Through the position locking mechanism, rotate the rotating sleeve 14 to press the sealing plate 15 against the extending spring rod 12, causing the extending spring rod 12 to extend into the annular stepped groove 11 of the locking rod 10, locking the vertical position of the lifting frame 2. The bottom ball block 19 in the locking auxiliary mechanism passes through the counterweight block 17 assembly. Under the action of the counterweight spring 18, the counterweight block 17 clamps the bottom ball block 19, reinforcing the rotating sleeve 1. The rotational stability of 4 is improved, and the position of the threaded sleeve 20 is adjusted so that the rubber ring 21 presses against the pressure block 13, further enhancing the locking effect. The sleeve 7 is slidably installed on the horizontal bar 6 on the lifting frame 2 to adjust the horizontal position of the test component 8 so that it is accurately aligned with the instrument to be tested. Then, the sleeve 7 is fixed by the locking bolt 25. The test line 26 at the bottom of the test component 8 passes through the lifting frame 2 and connects to the instrument to be tested on the conveyor belt to establish an electrical connection. The test component 8 performs various parameter tests and functional tests on the instrument to complete the maintenance test task.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An instrument and meter maintenance and testing platform, comprising a longitudinal frame (1), a detection and adjustment mechanism, a position locking mechanism, and a locking auxiliary mechanism, characterized in that: The detection and adjustment mechanism includes a lifting frame (2), a side frame (3), a longitudinal plate (4), adjustment holes (5), a transverse rod (6), a mounting sleeve (7), and a test assembly (8). The longitudinal plate (4) is installed on both sides of the longitudinal frame (1), the side frame (3) is installed on both sides of the lifting frame (2), the clamping pipe (9) is installed on the side frame (3), multiple sets of adjustment holes (5) are set on the longitudinal plate (4), the transverse rod (6) is installed on the lifting frame (2), and the mounting sleeve (7) is installed on the top of the test assembly (8). The mounting sleeve (7) is slidably installed on the transverse rod. On the rod (6), the position locking mechanism includes a locking tube (9), a locking rod (10), an annular stepped groove (11), an extension spring rod (12), a pressure block (13), a rotating sleeve (14), and a sealing plate (15). The annular stepped groove (11) is provided on the side wall of the locking rod (10). The extension spring rod (12) is installed on the outer wall of the locking tube (9). The rotating sleeve (14) is installed on the outer wall of the locking tube (9) for limiting rotation. The sealing plate (15) is installed at the top end of the rotating sleeve (14). The sealing plate (15) presses against one end of the extension spring rod (12). The bottom end of the longitudinal frame (1) is provided with a base plate (22), and a mounting bracket (23) is provided on the top end face of the base plate (22). A conveyor belt assembly (24) is provided on the top end of the mounting bracket (23), and the instrument to be tested is placed on the conveyor belt assembly (24). The test assembly (8) is equipped with a detection line (26) at its bottom end, and the detection line (26) can pass through the lifting frame (2) and lead to the conveyor belt assembly (24).

2. The instrument and meter repair and testing platform according to claim 1, characterized in that: The snap-fit ​​auxiliary mechanism includes a connecting plate (16), a pair of shrink blocks (17), a pair of shrink springs (18), a bottom ball block (19), a threaded sleeve (20), and a rubber ring (21). The connecting plate (16) is installed on the bottom end of the side wall of the snap-fit ​​tube (9). The connecting plate (16) is fixedly installed on one end face of the side frame (3). Multiple sets of pair of shrink blocks (17) are circumferentially slidably installed on the top end of the connecting plate (16). The pair of shrink springs (18) are installed between the pairs of shrink blocks (17). The bottom ball block (19) is installed on the bottom end of the rotating sleeve (14). The bottom ball block (19) passes through the pair of shrink blocks (17) assembly in sequence to make the rotating sleeve (14) rotate stably. The threaded sleeve (20) is installed on the outer wall of the snap-fit ​​tube (9). The rubber ring (21) is installed on the bottom end of the threaded sleeve (20).

3. The instrument and meter maintenance and testing platform according to claim 1, characterized in that: The mounting sleeve (7) is equipped with a locking bolt (25), and the locking bolt (25) can pass through the mounting sleeve (7) to fix the mounting sleeve (7) to the horizontal bar (6).

4. The instrument and meter maintenance and testing platform according to claim 2, characterized in that: The top end of the connecting plate (16) is provided with a centripetal rail (27), and the shrink block (17) is set to slide centripetally on the centripetal rail (27).

5. The instrument and meter repair and testing platform according to claim 1, characterized in that: The inside of the retaining tube (9) is equipped with an ejector spring (28), and one end of the retaining rod (10) extends into the retaining tube (9) to compress the ejector spring (28).

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