Test bench for instruments and meters

Abstract

The utility model discloses a test bed for instruments and meters, which comprises a box body, connecting grooves are arranged at two ends of the top of the box body, connecting strips are slidably connected to the inner walls of the connecting grooves, fixing strips are fixedly connected to two ends between the tops of the two connecting strips, and two panels are arranged between the two fixing strips. The panel is in sliding connection with the tops of the connecting strips, the top of the box body is in a concave shape, a U-shaped plate is arranged at the top of the box body and located between the two connecting strips, and the top of the U-shaped plate is fixedly connected with the bottoms of the two fixing strips. The test bed for the instruments and meters has the effects of adjusting the height of the test bed and expanding the area of the test bed, meets the requirement for placing large instruments and meters, does not need to splice two test beds for the instruments and meters, can adjust the height of the table top according to the use requirement, facilitates observation of users, and is high in practicability. And the working efficiency of workers is improved, and actual application and operation are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of test benches, in particular to a test bench for instruments and meters. Background Art

[0002] Instrument test benches are used for testing mechanical parts, electronics, furniture, gifts, ceramics, packaging and other products. However, existing test benches lack adjustment devices, making it inconvenient for testers to use.

[0003] After searching, a Chinese patent disclosed a multifunctional instrument test bench (authorization announcement number CN217962621 U), which includes a base, a circular top plate located horizontally above the base, a baffle plate disposed between the top plate and the base, a cylinder disposed at the center of the top surface of the top plate, and a rotary cabinet disposed on the top surface of the top plate and rotatably cooperating with the cylinder; the baffle plate divides the top surface of the base into a test module and a display table; the test module is fan-shaped with an arc-shaped outer edge. Although the beneficial effects of the utility model of the patent are as follows: the multifunctional instrument test bench provided by the utility model reduces the possibility of interference between operators, has a large test space, high test efficiency, flexible use and strong applicability, and reasonable partitioning;

[0004] However, in actual application, the device lacks adjustment components, and the heights of the testers are different, and their operating postures on the operating table are also different, which causes some people to suffer from back pain and fatigue due to posture problems, affecting the progress of the test. At the same time, the rotating cabinet on the top of the table occupies a large area, which is not conducive to the placement of large instruments and is not conducive to actual application and operation. Utility Model Content

[0005] The utility model discloses a test bench for instruments and meters. In the background technology, the device lacks an adjustment component. The heights of test personnel are different, and the operating postures on the operating table are also different, which causes some people to suffer from back pain and fatigue due to posture problems, affecting the progress of the test. At the same time, the rotating cabinet on the top of the table occupies a large area, which is not conducive to preventing large instruments from being used, and is not conducive to practical application and operation. Technical problems.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A test bench for instruments and meters, comprising a box body, connecting grooves are provided at both ends of the top of the box body, connecting bars are slidably connected to the inner walls of the connecting grooves, fixing bars are fixedly connected to both ends between the tops of the two connecting bars, two panels are provided between the two fixing bars, the panels are slidably connected to the tops of the connecting bars, the top of the box body is concave, a U-shaped plate is provided on the top of the box body and is located between the two connecting bars, and the top of the U-shaped plate is fixedly connected to the bottoms of the two fixing bars;

[0008] An adjusting component is provided inside the box and below the U-shaped plate, and the adjusting component is used to adjust the height of the panel. An expanding component is provided inside the U-shaped plate, and the expanding component is used to expand the area of ​​the panel.

[0009] By setting the device to be placed in a specified position, connecting the power supply, placing the object to be tested on the panel, and placing it on the placement plate, when the object to be tested is large, push the panel in the opposite direction, and use the expansion component to expand the area of ​​the panel to facilitate the test. When the height of the panel is insufficient, use the adjustment component to drive the U-shaped plate to rise, and use the U-shaped plate to drive the panel and the connecting strip to rise. This device meets the needs of placing large instruments and meters, and does not require two instrument test benches to be spliced. At the same time, the height of the desktop can be adjusted according to the use requirements, which is convenient for users to observe, improves the work efficiency of the staff, and is conducive to actual application and operation.

[0010] In a preferred embodiment, the adjusting assembly includes a through slot, a sliding rod, a screw rod, a movable plate and a support plate, the through slot being opened inside the box, the sliding rod being fixedly connected to one end of the inner wall of the through slot, the screw rod being rotatably connected to the inner wall of the through slot away from the through slot, the movable plate being threadedly connected to the outer side of the screw rod and slidingly connected to the inner wall of the through slot, the movable plate being slidingly connected to the outer side of the sliding rod, the support plate being fixedly connected to the top of the movable plate and extending to the top of the box, the top of the support plate being fixedly connected to the bottom of the U-shaped plate, and the support plate being slidably connected to the top of the box.

[0011] By setting the screw to rotate, the inner wall of the through groove cooperates with the sliding rod to make the movable plate rise under the action of the screw, and the movable plate drives the supporting plate to rise. The supporting plate supports the U-shaped plate and applies an upward force to it to make it rise.

[0012] In a preferred embodiment, the expansion component includes a slider, a movable slot, a second slot, a second block, an auxiliary plate, a connecting rod, a limit block, a limit slot, a slide, a first block and a first slot, the sliders are fixedly connected to the two sides of the two panels close to each other, the slide slots are opened at both ends of the inner wall of the fixed bar, the sliders are slidably connected to the inner walls of the corresponding slide slots, the limit slots are opened at both sides of the inner wall of the U-shaped plate, the limit blocks are slidably connected to the inner walls of the limit slots, the auxiliary plate is fixedly connected between the two limit blocks, the connecting rods are rotatably connected to the two ends on both sides of the auxiliary plate, the The movable grooves are opened on both sides of the two panels, and one end of the connecting rod is provided with a protrusion, and the protrusion is slidably connected to the inner wall of the corresponding movable groove. The first card blocks are fixedly connected to the two ends of one side of one panel, and the first card slots are opened at the two ends of one side of the other panel. The first card slots are used in conjunction with the first card blocks, and the second card slots are opened at the two ends of the auxiliary plate close to the first card block. The second card blocks are fixedly connected to the two ends of the auxiliary plate close to the first card slot. The first card slot is used in conjunction with the second card block, and the first card block is used in conjunction with the second card slot.

[0013] By setting a slider in conjunction with a sliding groove, the panel has a support point on the top of the connecting strip, and at the same time enables it to slide and limit it. When the panel moves, it will drive the connecting rod to move, so that the two connecting rods on both sides drive the auxiliary plate to rise. The limiting groove is used in conjunction with the limiting block to limit the rising auxiliary plate to prevent the displacement of the panel on one side from being too large, which will cause the auxiliary plate to be unable to rise. The moving groove cooperates with the protrusion of the connecting rod so that the auxiliary plate is not affected by the first block and the second block when it rises, and at the same time facilitates the fixing of the first slot and the second block and the fixing of the first block and the second slot.

[0014] In a preferred solution, the length of the limiting block is greater than the length of the limiting slot, the limiting block and the limiting slot are both rectangular, and the length of the movable slot is greater than the length of the first clamping block.

[0015] By setting the length of the limit block to be greater than the length of the limit slot, it is beneficial to the movement of the connecting rod. The length of the moving slot is greater than the length of the first card block, which is beneficial to prevent the first card block from colliding with the auxiliary plate and thus hindering the auxiliary plate from rising. At the same time, a certain moving distance is provided for the panel, so that the first card slot is fixed to the second card block, and the first card block is fixed to the second card slot.

[0016] In a preferred solution, two fixed plates are fixedly connected to the top of the panel, and placement grooves are equidistantly provided on the sides of the two fixed plates that are close to each other, wherein the inner walls of the two placement grooves are slidably connected to the placement plates, and storage grooves are equidistantly provided on the outer side of the box body, and the inner walls of the storage grooves are slidably connected to the placement boxes.

[0017] The placement plate is supported by two fixing plates and matched with the placement slots, and the placement plate is easily adjusted. The instruments and tools required for the test are placed on the placement box and the placement plate to prevent loss and enable quick access when in use.

[0018] In a preferred solution, a motor is fixedly connected to the outside of the box, the output end of the motor extends to the inside of the through slot and is fixedly connected to the second bevel gear, the outside of the screw rod is fixedly connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, and a control switch is fixedly connected to the outside of the box.

[0019] By setting the motor to rotate under the control of the control surface, the motor drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the screw to rotate.

[0020] In a preferred solution, both ends of the bottom of the inner wall of the through groove are fixedly connected with fixed blocks, the height of the fixed blocks is greater than the height of the first bevel gear, and the four corners of the bottom of the box are fixedly connected with supporting feet.

[0021] The provision of the fixed block helps to limit the collision between the movable plate and the first bevel gear when descending, and the supporting feet support the device and increase its stability.

[0022] The utility model provides an instrument test bench with the following advantages:

[0023] This equipment is set to place the device in a specified position, connect the power supply, place the object to be tested on the panel, and place it on the placement plate. When the object to be tested is large, push the panel in the opposite direction and use the expansion component to expand the area of ​​the panel to facilitate the test. When the height of the panel is insufficient, use the adjustment component to drive the U-shaped plate to rise, and use the U-shaped plate to drive the panel and the connecting strip to rise. This device meets the needs of placing large instruments and meters, and does not require two instrument test benches to be spliced. At the same time, the height of the desktop can be adjusted according to the use requirements, which is convenient for users to observe, improves the work efficiency of staff, and is conducive to practical application and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a first-perspective stereoscopic schematic diagram of a test bench for instruments and meters proposed by the utility model.

[0025] Figure 2 This is a second-view stereoscopic schematic diagram of a test bench for instruments and meters proposed by the utility model.

[0026] Figure 3This is a first-person perspective schematic diagram of a test bench for instruments and meters proposed in the utility model.

[0027] Figure 4 The present invention provides a schematic diagram of a test bench for instruments and meters from a third-person perspective.

[0028] Figure 5 This is a third-angle perspective schematic diagram of a test bench for instruments and meters proposed by the utility model.

[0029] Figure 6 The utility model is a cross-sectional schematic diagram of a test bench for instruments and meters proposed in the first perspective.

[0030] In the accompanying drawings: 1. Box body; 2. Support legs; 3. Motor; 4. Placement box; 5. Connecting strip; 6. Connecting slot; 7. U-shaped plate; 8. Panel; 9. Fixing strip; 10. Fixing plate; 11. Placement slot; 12. Placement plate; 13. Control switch; 14. Auxiliary plate; 15. Support plate; 16. Fixing block; 17. Through slot; 18. Moving plate; 19. Screw; 20. Sliding rod; 21. First bevel gear; 22. Second bevel gear; 23. Storage slot; 24. First clamping block; 25. First clamping slot; 26. Second clamping block; 27. Sliding slot; 28. Limiting block; 29. ​​Limiting slot; 30. Connecting rod; 31. Moving slot; 32. Sliding bar; 33. Second clamping slot. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0032] In what scenarios is the instrument test bench disclosed in the utility model mainly used?

[0033] Reference Figure 1 and Figure 3A test bench for instruments and meters includes a box body 1, connecting grooves 6 are provided at both ends of the top of the box body 1, connecting bars 5 are slidably connected to the inner walls of the connecting grooves 6, and fixing bars 9 are fixedly connected to both ends of the tops of the two connecting bars 5. Two panels 8 are provided between the two fixing bars 9, and the panels 8 are slidably connected to the tops of the connecting bars 5. The top of the box body 1 is concave, and a U-shaped plate 7 is provided on the top of the box body 1 and is located between the two connecting bars 5. The top of the U-shaped plate 7 is fixedly connected to the bottoms of the two fixing bars 9.

[0034] An adjustment component is provided inside the box body 1 and below the U-shaped plate 7 , and the adjustment component is used to adjust the height of the panel 8 . An expansion component is provided inside the U-shaped plate 7 and is used to expand the area of ​​the panel 8 .

[0035] In this embodiment: the device is placed in a designated position, the power supply is connected, the object to be tested is placed on the panel 8, and the object is placed on the placement plate 12. When the object to be tested is large, the panel 8 is pushed in the opposite direction, and the area of ​​the panel 8 is expanded by using the expansion component, thereby facilitating the test. When the height of the panel 8 is insufficient, the adjustment component is used to drive the U-shaped plate 7 to rise, and the U-shaped plate 7 is used to drive the panel 8 and the connecting bar 5 to rise. The device meets the needs of placing large instruments and meters, and does not require two instrument test benches to be spliced. At the same time, the height of the desktop can be adjusted according to the use requirements, which is convenient for the user to observe, improves the work efficiency of the staff, and is conducive to practical application and operation.

[0036] Reference Figure 1 and Figure 3 In a preferred embodiment, the adjustment assembly includes a through slot 17, a slide rod 20, a screw rod 19, a movable plate 18 and a support plate 15. The through slot 17 is opened inside the box body 1, the slide rod 20 is fixedly connected to one end of the inner wall of the through slot 17, the screw rod 19 is rotatably connected to the end of the inner wall of the through slot 17 away from the through slot 17, the movable plate 18 is threadedly connected to the outer side of the screw rod 19 and is slidably connected to the inner wall of the through slot 17, the movable plate 18 is slidably connected to the outer side of the slide rod 20, the support plate 15 is fixedly connected to the top of the movable plate 18 and extends to the top of the box body 1, the top of the support plate 15 is fixedly connected to the bottom of the U-shaped plate 7, and the support plate 15 is slidably connected to the top of the box body 1.

[0037] In this embodiment: the screw rod 19 rotates, and the inner wall of the through groove 17 cooperates with the sliding rod 20 to make the movable plate 18 rise under the action of the screw rod 19, and the movable plate 18 drives the support plate 15 to rise, and the support plate 15 supports the U-shaped plate 7 and applies an upward force to it to make it rise.

[0038] Reference Figure 1 、 Figure 3 and Figure 5In a preferred embodiment, the expansion component includes a slider 32, a movable groove 31, a second slot 33, a second block 26, an auxiliary plate 14, a connecting rod 30, a limit block 28, a limit slot 29, a slide 27, a first block 24 and a first slot 25. The sliders 32 are fixedly connected to the two sides of the two panels 8 that are close to each other. The slide slots 27 are both opened at both ends of the inner wall of the fixing bar 9. The sliders 32 are slidably connected to the inner walls of the corresponding slide slots 27. The limit slots 29 are opened on both sides of the inner wall of the U-shaped plate 7. The limit blocks 28 are slidably connected to the inner walls of the limit slots 29. The auxiliary plate 14 is fixedly connected between the two limit blocks 28. The connecting rods 30 are rotatably connected to the auxiliary plate 1 4, the movable grooves 31 are provided on both sides of the two panels 8, one end of the connecting rod 30 is provided with a protrusion, and the protrusion is slidably connected to the inner wall of the corresponding movable groove 31, the first clamping blocks 24 are fixedly connected to the two ends of one side of one panel 8, the first clamping grooves 25 are provided at the two ends of one side of the other panel 8, the first clamping grooves 25 are used in conjunction with the first clamping blocks 24, the second clamping grooves 33 are provided at the two ends of the side of the auxiliary plate 14 close to the first clamping block 24, the second clamping blocks 26 are fixedly connected to the two ends of the side of the auxiliary plate 14 close to the first clamping groove 25, the first clamping groove 25 is used in conjunction with the second clamping block 26, and the first clamping block 24 is used in conjunction with the second clamping groove 33.

[0039] In this embodiment: the slider 32 cooperates with the slide groove 27 to provide the panel 8 with a support point at the top of the connecting bar 5, and at the same time enables it to slide and limit it. When the panel 8 moves, it will drive the connecting rod 30 to move, so that the two connecting rods 30 on both sides drive the auxiliary plate 14 to rise. The limiting groove 29 is used to cooperate with the limiting block 28 to limit the rising auxiliary plate 14 to prevent the displacement of the panel 8 on one side from being too large, which will cause the auxiliary plate 14 to be unable to rise. The moving groove 31 cooperates with the protrusion of the connecting rod 30 so that the auxiliary plate 14 is not affected by the first block 24 and the second block 26 when it rises, and at the same time facilitates the fixation of the first slot 25 and the second block 26 and the fixation of the first block 24 and the second slot 33.

[0040] Reference Figure 1 and Figure 4 In a preferred embodiment, the length of the limit block 28 is greater than the length of the limit slot 29 , the limit block 28 and the limit slot 29 are both rectangular, and the length of the movable slot 31 is greater than the length of the first clamping block 24 .

[0041] In this embodiment: the length of the limit block 28 is greater than the length of the limit slot 29, which is beneficial to the movement of the connecting rod 30, and the length of the movable slot 31 is greater than the length of the first clamping block 24, which is beneficial to the first clamping block 24 not colliding with the auxiliary plate 14 and thus hindering the auxiliary plate 14 from rising. At the same time, a certain moving distance is provided for the panel 8, so that the first clamping slot 25 is fixed to the second clamping block 26, and the first clamping block 24 is fixed to the second clamping slot 33.

[0042] Reference Figure 3 and Figure 6 In a preferred embodiment, two fixing plates 10 are fixedly connected to the top of the panel 8, and placement grooves 11 are equidistantly provided on the side close to the two fixing plates 10, wherein the inner walls of the two placement grooves 11 are slidably connected to placement plates 12, and storage grooves 23 are equidistantly provided on the outer side of the box body 1, and the inner walls of the storage grooves 23 are slidably connected to placement boxes 4.

[0043] In this embodiment, two fixing plates 10 cooperate with the placement groove 11 to support the placement plate 12, and at the same time facilitate the adjustment of the placement plate 12. The instruments and tools required for the test are placed through the placement box 4 and the placement plate 12 to prevent loss and can be quickly taken and used.

[0044] Reference Figure 1 and Figure 3 In a preferred embodiment, the outer side of the box body 1 is fixedly connected to the motor 3, the output end of the motor 3 extends to the inside of the through slot 17 and is fixedly connected to the second bevel gear 22, the outer side of the screw rod 19 is fixedly connected to the first bevel gear 21, the first bevel gear 21 is meshed with the second bevel gear 22, and the outer side of the box body 1 is fixedly connected to the control switch 13.

[0045] In this embodiment, the motor 3 rotates under the control of the control surface, the motor 3 drives the second bevel gear 22 to rotate, the second bevel gear 22 drives the first bevel gear 21 to rotate, and the first bevel gear 21 drives the screw rod 19 to rotate.

[0046] Reference Figure 1 and Figure 2 In a preferred embodiment, both ends of the bottom of the inner wall of the through groove 17 are fixedly connected with fixed blocks 16, the height of the fixed block 16 is greater than the height of the first bevel gear 21, and the four corners of the bottom of the box body 1 are fixedly connected with support feet 2.

[0047] In this embodiment, the fixed block 16 helps to limit the collision between the movable plate 18 and the first bevel gear 21 when descending, and the supporting legs 2 support the device and increase its stability.

[0048] Working principle: When in use, the device is placed in the designated position, the object to be tested is placed on the panel 8, the testing instruments and meters to be used are taken out from the inside of the placement box 4, and placed on the placement plate 12. When the object to be tested is large, the panel 8 is pushed in the opposite direction. At the same time, the panel 8 will drive the connecting rod 30 to move when it moves, so that the two connecting rods 30 on both sides drive the auxiliary plate 14 to rise. The limiting groove 29 is used to cooperate with the limiting block 28 to limit the rising auxiliary plate 14 to prevent the displacement of the panel 8 on one side from being too large, which will cause the auxiliary plate 14 to be unable to rise. The moving groove 31 cooperates with the convex block of the connecting rod 30 so that the auxiliary plate 14 is not affected by the first block 24 and the second block 26 when it rises, and it is convenient for the first slot 25 to be fixed with the second block 26 and the first block 24 to be fixed with the second slot 33. The area of ​​the panel 8 is fixed, so that the area of ​​the panel 8 is expanded, which is beneficial to the test. When the height of the panel 8 is insufficient, the control switch 13 is used to energize the motor 3, and the motor 3 is used to drive the second bevel gear 22, and the second bevel gear 22 is used to drive the first bevel gear 21 to rotate, and the first bevel gear 21 is used to drive the screw rod 19 to rotate, and the inner wall of the through groove 17 is used to cooperate with the slide rod 20 to make the movable plate 18 rise under the action of the screw rod 19, and the movable plate 18 drives the support plate 15 to rise, and the support plate 15 supports the U-shaped plate 7 and applies an upward force to it to make it rise. The device meets the needs of placing large instruments and meters, and does not require two instrument test benches to be spliced. At the same time, the height of the desktop can be adjusted according to the use requirements, which is convenient for users to observe, improves the work efficiency of the staff, and is beneficial to actual application and operation.

[0049] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A test bench for instruments and meters, comprising a box (1), characterized in that: Both ends of the top of the box body (1) are provided with connecting grooves (6), the inner walls of the connecting grooves (6) are slidably connected to connecting bars (5), both ends between the tops of the two connecting bars (5) are fixedly connected to fixing bars (9), two panels (8) are provided between the two fixing bars (9), the panels (8) are slidably connected to the tops of the connecting bars (5), the top of the box body (1) is concave, a U-shaped plate (7) is provided on the top of the box body (1) and is located between the two connecting bars (5), and the top of the U-shaped plate (7) is fixedly connected to the bottoms of the two fixing bars (9); An adjustment component is provided inside the box (1) and below the U-shaped plate (7), and is used to adjust the height of the panel (8). An expansion component is provided inside the U-shaped plate (7), and is used to expand the area of ​​the panel (8).

2. The test bench for instruments and meters according to claim 1, characterized in that: The adjustment assembly includes a through slot (17), a slide rod (20), a screw rod (19), a movable plate (18) and a support plate (15), wherein the through slot (17) is opened inside the box body (1), the slide rod (20) is fixedly connected to one end of the inner wall of the through slot (17), the screw rod (19) is rotatably connected to one end of the inner wall of the through slot (17) away from the through slot (17), the movable plate (18) is threadedly connected to the outer side of the screw rod (19) and is slidably connected to the inner wall of the through slot (17), the movable plate (18) is slidably connected to the outer side of the slide rod (20), the support plate (15) is fixedly connected to the top of the movable plate (18) and extends to the top of the box body (1), the top of the support plate (15) is fixedly connected to the bottom of the U-shaped plate (7), and the support plate (15) is slidably connected to the top of the box body (1).

3. The test bench for instruments and meters according to claim 1, characterized in that: The extension component includes a slider (32), a movable groove (31), a second slot (33), a second block (26), an auxiliary plate (14), a connecting rod (30), a limit block (28), a limit slot (29), a slide (27), a first block (24) and a first slot (25), wherein the slider (32) is fixedly connected to the two adjacent sides of the two panels (8), the slides (27) are opened at both ends of the inner wall of the fixed bar (9), the slider (32) is slidably connected to the inner wall of the corresponding slide (27), the limit slot (29) is opened at both sides of the inner wall of the U-shaped plate (7), the limit blocks (28) are slidably connected to the inner wall of the limit slot (29), the auxiliary plate (14) is fixedly connected between the two limit blocks (28), and the connecting rod (30) is rotatably connected to the inner wall of the two sides of the auxiliary plate (14). At both ends, the movable grooves (31) are opened on both sides of the two panels (8), one end of the connecting rod (30) is provided with a protrusion, and the protrusion is slidably connected to the inner wall of the corresponding movable groove (31), the first clamping block (24) is fixedly connected to the two ends of one side of one panel (8), the first clamping groove (25) is opened at the two ends of the side of the other panel (8), the first clamping groove (25) is used in conjunction with the first clamping block (24), the second clamping groove (33) is opened at the two ends of the side of the auxiliary plate (14) close to the first clamping block (24), the second clamping block (26) is fixedly connected to the two ends of the side of the auxiliary plate (14) close to the first clamping groove (25), the first clamping groove (25) is used in conjunction with the second clamping block (26), and the first clamping block (24) is used in conjunction with the second clamping groove (33).

4. The test bench for instruments and meters according to claim 3, characterized in that: The length of the limiting block (28) is greater than the length of the limiting slot (29), the limiting block (28) and the limiting slot (29) are both rectangular, and the length of the moving slot (31) is greater than the length of the first clamping block (24).

5. The test bench for instruments and meters according to claim 3, characterized in that: The top of the panel (8) is fixedly connected to two fixing plates (10), and the adjacent sides of the two fixing plates (10) are equidistantly provided with placement grooves (11), wherein the inner walls of the two placement grooves (11) are slidably connected to placement plates (12), and the outer side of the box body (1) is equidistantly provided with storage grooves (23), and the inner walls of the storage grooves (23) are slidably connected to placement boxes (4).

6. The test bench for instruments and meters according to claim 2, characterized in that: The outer side of the housing (1) is fixedly connected to a motor (3), the output end of the motor (3) extends to the interior of the through slot (17) and is fixedly connected to a second bevel gear (22), the outer side of the screw rod (19) is fixedly connected to a first bevel gear (21), the first bevel gear (21) is meshedly connected to the second bevel gear (22), and the outer side of the housing (1) is fixedly connected to a control switch (13).

7. The test bench for instruments and meters according to claim 2, characterized in that: Both ends of the bottom of the inner wall of the through slot (17) are fixedly connected to fixed blocks (16), the height of the fixed blocks (16) is greater than the height of the first bevel gear (21), and the four corners of the bottom of the box body (1) are fixedly connected to support feet (2).

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