Instrument detection device based on automation

Abstract

The invention relates to the technical field of instrument and meter detection, in particular to an automation-based instrument and meter detection device, which comprises two arc-shaped resistance plates and a rotary table, wherein the two arc-shaped resistance plates are distributed in an inner and outer sleeving manner and are coaxially arranged; the rotary table is provided with a plurality of supporting tables used for containing instruments and meters, and each supporting table is provided with two rolling bodies used in cooperation with the two arc-shaped resistance plates. Instruments and meters continuously pass through the area where the arc-shaped resistance plate is located, power-on detection can be conveniently conducted on each instrument and meter, the continuity of detection work is effectively improved, the automation degree is improved, the device is conveniently suitable for a large-batch production mode, manpower is saved, and efficiency is improved; meanwhile, inaccurate detection caused by fatigue of personnel, negligence of operation and the like during manual detection is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instrument detection, in particular to an instrument detection device based on automation. BACKGROUND

[0002] Instrument is a kind of equipment used for measuring, monitoring, controlling or recording physical quantities, electrical parameters and process states, and is an indispensable basic tool in industrial production, power engineering and scientific research test, in the field of power engineering detection, common instruments include voltmeter, ammeter, power meter, frequency meter, electric energy meter and various sensors for monitoring temperature, pressure, flow, insulation state, power consumption, etc., the accuracy and reliability of these instruments are directly related to the safe and stable operation of power system, energy management and fault diagnosis.

[0003] In the production and manufacturing process of instruments, the traditional detection method usually relies on manual operation: the technician needs to connect each instrument to be tested to the analog or standard circuit one by one, adjusts the power output manually, changes the current, voltage, frequency and other parameters, and compares the deviation between the instrument display value and the standard value to determine whether the measurement accuracy meets the requirements, this process has the following obvious defects: first, the instrument needs to be connected and disassembled frequently during the detection process, which is tedious and time-consuming, resulting in low detection efficiency and difficulty in meeting the rapid detection needs of large quantities of instruments; second, the whole process highly depends on manual judgment and operation, which is easy to affect the accuracy and consistency of the detection results due to personnel fatigue, careless operation or subjective reading error, and it is difficult to realize automatic recording and tracing of detection data. SUMMARY

[0004] The present application provides an instrument detection device based on automation, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present application is: An instrument detection device based on automation, comprising two arc-shaped resistance plates arranged in an inner and outer sleeve and coaxially arranged, and a turntable capable of rotating on the axis of the arc-shaped resistance plate, a plurality of supporting tables for placing instruments are arranged on the turntable, each supporting table is provided with two rolling bodies used in cooperation with the two arc-shaped resistance plates, the rolling bodies are electrically connected with the corresponding arc-shaped resistance plates, two connecting structures for connecting with instruments are arranged on the supporting table, and the two connecting structures are electrically connected with the two rolling bodies respectively. A wire connected with an external circuit is arranged at one end of the arc-shaped resistance plate.

[0006] In some embodiments of the present application, the two ends of the arc-shaped resistance plate are close to each other, and an insulating block is arranged between the two ends of the arc-shaped resistance plate, the arc-shaped resistance plate and the insulating block form a complete circle, and the rolling body performs circumferential movement on the complete circle.

[0007] In some embodiments of the present application, the wall thickness of the arc-shaped resistance plate gradually changes from one end to the other end.

[0008] In some embodiments of the present application, the rolling body comprises a core column rotatably arranged on the support table, a rubber layer arranged outside the core column, and a conductive layer arranged outside the rubber layer, the conductive layer is electrically connected with the connecting structure through the core column, and the rubber layer and the conductive layer are both arranged in a deformable manner.

[0009] In some embodiments of the present application, the connecting structure comprises a support frame capable of moving on the support table, a fixed sleeve arranged on the support frame, and a movable rod sliding through the fixed sleeve, the fixed sleeve and the movable rod are connected through a plurality of conductive sheets, and the conductive sheets are electrically connected with the core column.

[0010] In some embodiments of the present application, the connecting structure further comprises a sliding seat slidingly arranged on the support table, a rack and a gear are arranged on the sliding seat, the rack is slidingly arranged on the sliding seat, the gear is rotatably arranged on the sliding seat, the support frame is fixedly arranged opposite to the gear, and the rack and the gear are connected in meshing relationship.

[0011] In some embodiments of the present application, a clamping surface cooperating with the rack is arranged on the support frame, and a limiting body for limiting the gear is arranged at the end of the rack. The sliding seat and the support table are connected through a spring.

[0012] In some embodiments of the present application, a connecting frame is slidingly arranged on the support table, the connecting frame is connected with the two racks, and a sliding column is arranged on the connecting frame. The detection device further comprises a fixed disc coaxially arranged with the arc-shaped resistance plate and fixedly arranged opposite to the arc-shaped resistance plate, an annular groove is formed on the circumferential outer wall of the fixed disc, the annular groove comprises an arc-shaped groove and a U-shaped groove, and the sliding column cooperates with the annular groove.

[0013] In some embodiments of the present application, a clamping structure for clamping instruments and meters is arranged on the support table, the clamping structure comprises a contact column, two conductive plates and two electromagnetic generators, the contact column is slidingly arranged on the support table, the contact column and the support table are connected through a spring, and a conductive plate one is arranged at the end of the contact column, the conductive plate one is used for connecting the conductive plate two and an external circuit. Two electromagnetic generators are oppositely arranged on the side wall of the table, the electromagnetic generators are electrically connected with the conductive plates, a pressing plate is arranged on each of the electromagnetic generators, a magnet is arranged on the pressing plate and used in cooperation with the electromagnetic generator, and the electromagnetic generator and the magnet repel each other when the electromagnetic generator is powered on, and the pressing plate is slidably arranged on the table.

[0014] In some embodiments of the present application, two sliding plates are rotatably arranged on the pressing plate, the two sliding plates are parallel to each other, a rotating column is slidably sleeved on the sliding plates, and the rotating column is rotatably arranged on the table, and a limiting column for limiting the direction of the sliding plate is arranged on the table. A side limiting edge for limiting the instrument is arranged on the table.

[0015] The present application has the following advantages: By continuously passing the instruments through the area where the arc-shaped resistance plates are located, the instruments can be conveniently powered on for detection, the continuity of the detection work is effectively improved, the degree of automation is improved, the large-batch production mode is facilitated, manpower is saved, efficiency is improved, and inaccurate detection caused by personnel fatigue, careless operation and the like during manual detection is avoided; by using the moving mode of the rolling body on the arc-shaped resistance plates, the length of the arc-shaped resistance plates in the circuit is changed, thereby automatically adjusting the parameters in the circuit as the instruments move, manual adjustment is not required, and the automatic detection mode is facilitated, thereby greatly simplifying the operation mode and structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a structural schematic diagram of the present application; Figure 2 is an exploded structural schematic diagram of Figure 1 ; Figure 3 is a structural schematic diagram of the table in Figure 2 ; Figure 4 is a structural schematic diagram of Figure 3 from another angle; Figure 5 is a structural schematic diagram of the connecting structure in Figure 3 ; Figure 6 is Figure 5 Another perspective view of the structure; Figure 7 is Figure 3 Structure diagram of the clamping structure in the middle; Figure 8 is Figure 7 Schematic diagram of the extrusion plate and the structure thereon.

[0018] Reference signs: 100, arc-shaped resistance plate; 101, wire; 102, insulating block; 200, turntable; 300, support table; 301, side stop edge; 400, rolling body; 401, core column; 402, rubber layer; 403, conductive layer; 500, connecting structure; 501, support frame; 502, fixed sleeve; 503, movable rod; 504, conductive sheet; 505, sliding seat; 506, spring; 507, rack; 508, gear; 509, clamping surface; 510, limiting body; 511, connecting frame; 512, sliding column; 513, fixed disc; 514, arc-shaped groove; 515, U-shaped groove; 600, clamping structure; 601, contact column; 602, spring piece; 603, conductive plate I; 604, conductive plate II; 605, electromagnetic generator; 606, extrusion plate; 607, magnet; 608, rotating column; 609, sliding plate; 610, limiting column. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0020] As Figures 1 to 8 shown, the automatic instrument detection device of the present application comprises two arc-shaped resistance plates 100 arranged in an inner and outer sleeve manner and coaxially with each other, and a turntable 200 capable of rotating on the axis of the arc-shaped resistance plate 100, a plurality of support tables 300 for placing instruments are arranged on the turntable 200, two rolling bodies 400 for cooperating with the two arc-shaped resistance plates 100 are arranged on each support table 300, the rolling bodies 400 are electrically connected with the corresponding arc-shaped resistance plates 100, two connecting structures 500 for connecting with the instruments are arranged on the support table 300, and the two connecting structures 500 are electrically connected with the two rolling bodies 400, respectively. A wire 101 connected with an external circuit is arranged at one end of the arc-shaped resistance plate 100.

[0021] Specifically, the two arc-shaped resistance plates 100 are arranged on a horizontal plane, and one arc-shaped resistance plate 100 is located on the inner side of the other arc-shaped resistance plate 100, the outer wall of the inner arc-shaped resistance plate 100 and the inner wall of the outer arc-shaped resistance plate 100 form a channel with a constant width, which can be used to move the two rolling bodies 400 at the bottom of the support table 300; one end of the two arc-shaped resistance plates 100 on the same side is connected to an external circuit through two wires 101, thereby charging the two arc-shaped resistance plates 100, when the rolling bodies 400 move on the arc-shaped resistance plates 100, the change of the distance between the rolling bodies 400 and the wires 101 can adjust the length of the part of the arc-shaped resistance plate 100 connected to the circuit, thereby changing the resistance value of the circuit connected, which is convenient for automatically adjusting the current and voltage according to the moving position of the rolling bodies 400; the rotating table 200 is located on the upper side of the arc-shaped resistance plate 100, and the rotating axis of the rotating table 200 is coaxial with the arc-shaped resistance plate 100, so that the moving track of the rolling bodies 400 matches the shape of the arc-shaped resistance plate 100.

[0022] In use, the rotating table 200 rotates and moves the rolling bodies 400 to between the two ends of the corresponding arc-shaped resistance plate 100, at this time the rolling bodies 400 are disconnected from the arc-shaped resistance plate 100, and the rolling bodies 400 are not connected to the circuit, the instrument to be detected is placed on the support table 300 through a mechanical arm or other conveying structure, and the two connecting structures 500 on the support table 300 are connected with the instrument, so that the two rolling bodies 400 can be connected with the instrument, and then the rotating table 200 is rotated, the support table 300 drives the two rolling bodies 400 to move synchronously, when the two rolling bodies 400 respectively contact the two arc-shaped resistance plates 100, the instrument is connected to the circuit, at this time the instrument detects the parameters in the circuit, with the movement of the rolling bodies 400, the length of the part of the arc-shaped resistance plate 100 between the wire 101 and the rolling body 400 changes, thereby adjusting the resistance value in the circuit, and the data detected by the instrument changes at any moment, when the rolling bodies 400 rotate one circle and are separated from the arc-shaped resistance plate 100 again, the instrument is disconnected from the circuit, at this time the automatic detection of the instrument is completed, and a new instrument can be installed on the support table 300 for repeated detection.

[0023] It should be noted that a plurality of instruments can be simultaneously and continuously measured by arranging a plurality of support tables 300, thereby greatly improving the continuity of the detection work and improving the work efficiency; a disassembly area and an assembly area can be arranged between the two ends of the arc-shaped resistance plate 100, in the assembly area, the instrument is installed on the support table 300, when the support table 300 rotates one circle to the disassembly area, the instrument is disassembled, and when the support table 300 moves to the assembly area again, a new instrument can be installed on the support table 300.

[0024] When detecting, the device can be configured with a data collection structure or a visual detection structure to observe the data displayed by the instrument, so as to avoid the tediousness of observing the data by the human eye and realize a full-automatic detection mode.

[0025] By continuously passing the instruments through the area where the arc-shaped resistance plate 100 is located, the power-on detection of each instrument can be facilitated, the continuity of the detection work is effectively improved, the degree of automation is improved, mass production mode is facilitated, manpower is saved, efficiency is improved, and inaccurate detection caused by personnel fatigue, careless operation and the like during manual detection is avoided; by using the moving mode of the rolling body 400 on the arc-shaped resistance plate 100, the length of the arc-shaped resistance plate 100 in the access circuit is changed, so that the parameters in the circuit are automatically adjusted with the movement of the instruments, manual adjustment is not required, and the automatic detection mode is facilitated, so that the operation mode and the structure form are greatly simplified.

[0026] In some embodiments of the present application, the two ends of the arc-shaped resistance plate 100 are close to each other, and an insulating block 102 is arranged between the two ends of the arc-shaped resistance plate 100, the arc-shaped resistance plate 100 and the insulating block 102 form a complete circle, and the rolling body 400 performs circumferential motion on the complete circle.

[0027] As shown in Figure 2 , the inner wall of the outer arc-shaped resistance plate 100 and the side wall of the insulating block 102 thereon form a complete circle, and the outer wall of the inner arc-shaped resistance plate 100 and the side wall of the insulating block 102 thereon form a complete circle, and the two complete circles can form a complete annular channel, so that the two rolling bodies 400 on the support table 300 can perform circular motion in the annular channel, and the insulating block 102 can isolate the two ends of the arc-shaped resistance plate 100.

[0028] In some embodiments of the present application, the wall thickness of the arc-shaped resistance plate 100 gradually changes from one end to the other end.

[0029] When the wall thickness of the arc-shaped resistance plate 100 is constant, the rolling body 400 moves on the arc-shaped resistance plate 100, the resistance value of the part of the arc-shaped resistance plate 100 in the access circuit changes linearly, and at this time the detection value of the instrument changes linearly, and when the shape of the arc-shaped resistance plate 100 as shown in Figure 2 , the resistance value of the part of the arc-shaped resistance plate 100 in the access circuit no longer changes linearly, and at this time the detection value of the instrument no longer changes regularly linearly, by using this mode, the regular detection mode can be replaced by the irregular detection mode, so that the accuracy and randomness of the detection can be improved.

[0030] It should be noted that the outer wall of the outer arc-shaped resistance plate 100 and the inner wall of the inner arc-shaped resistance plate 100 can be provided with protrusions at random, so that the wall thicknesses of different positions on the arc-shaped resistance plate 100 are more irregular, and the randomness of detection is further improved.

[0031] In some embodiments of the present application, the rolling body 400 comprises a core column 401 rotatably arranged on the support table 300, a rubber layer 402 arranged outside the core column 401, and a conductive layer 403 arranged outside the rubber layer 402, the conductive layer 403 is electrically connected with the connecting structure 500 through the core column 401, and the rubber layer 402 and the conductive layer 403 are both deformable.

[0032] When the rolling body 400 contacts the arc-shaped resistance plate 100, the mutual extrusion between the rolling body 400 and the arc-shaped resistance plate 100 causes the elastic deformation of the conductive layer 403 and the rubber layer 402, at this time, the conductive layer 403 and the arc-shaped resistance plate 100 are in a surface contact state, with the movement of the support table 300, the conductive layer 403 rolls on the arc-shaped resistance plate 100, and the conductive layer 403 drives the core column 401 to rotate on the support table 300, thereby increasing the contact area between the rolling body 400 and the arc-shaped resistance plate 100 and improving the stability of power transmission; the rubber layer 402 can provide auxiliary support for the conductive layer 403, thereby improving the stability of the rolling body 400 when rolling, and this rolling mode can reduce the friction between the rolling body 400 and the arc-shaped resistance plate 100.

[0033] The conductive layer 403 can be an elastic metal ring, a metal mesh or other structures with conductive function and deformability.

[0034] In some embodiments of the present application, as shown in Figure 5 The connecting structure 500 comprises a support frame 501 capable of moving on the support table 300, a fixed sleeve 502 arranged on the support frame 501, and a movable rod 503 sliding through the fixed sleeve 502, the fixed sleeve 502 and the movable rod 503 are connected through a plurality of conductive sheets 504, and the conductive sheets 504 are electrically connected with the core column 401.

[0035] In the natural state, the conductive sheet 504 is close to the outer wall of the movable rod 503, at this time, the projection area of the conductive sheet 504 on the horizontal plane is small, so that the conductive sheet 504 is inserted into the wiring hole of the instrument and meter, when it is necessary to be connected with the instrument and meter, the support frame 501 is slid on the support table 300, the fixed sleeve 502 drives the conductive sheet 504 on it to move synchronously, and the conductive sheet 504 and the end of the movable rod 503 are inserted into the wiring hole of the instrument and meter, when the end of the movable rod 503 reaches the bottom of the wiring hole, the movable rod 503 stops moving, the fixed sleeve 502 continues to move and extrudes the conductive sheet 504, the conductive sheet 504 is opened outward and contacts with the inner wall of the wiring hole, so that the connecting structure 500 is in surface contact mode with the instrument and meter, and the connection area is increased.

[0036] In some embodiments of the application, the connecting structure 500 further comprises a sliding seat 505 slidably arranged on the support table 300, a rack 507 and a gear 508 are arranged on the sliding seat 505, the rack 507 is slidably arranged on the sliding seat 505, the gear 508 is rotatably arranged on the sliding seat 505, the support frame 501 is fixedly connected with the gear 508, and the rack 507 and the gear 508 are connected with each other.

[0037] The sliding of the sliding seat 505 on the support table 300 can provide power for the movement of the support frame 501, so that the movable rod 503 is inserted into or moved out of the wiring hole on the instrument and meter, since the rack 507 and the gear 508 are connected with each other, when the rack 507 slides on the sliding seat 505, the gear 508 rotates, the gear 508 can drive the support frame 501 to rotate, so as to adjust the position of the support frame 501 and the structure thereon, and facilitate the support frame 501 and the structure thereon to deviate from the area above the support table 300 when the instrument and meter are assembled or disassembled.

[0038] In some embodiments of the application, a clamping surface 509 is arranged on the support frame 501 and matched with the rack 507, and a limiting body 510 is arranged at the end of the rack 507 and used for limiting the gear 508. The sliding seat 505 and the support table 300 are connected through the spring 506.

[0039] As Figure 5 and Figure 6As shown, the spring 506 can provide elastic thrust for the sliding seat 505, when the rack 507 moves downward, the rack 507 will first drive the gear 508 to rotate, the gear 508 drives the support frame 501 to move from the outer side of the support table 300 to the upper side of the support table 300, at this time, the limiting body 510 is in contact with the gear 508, the rack 507 and the gear 508 are mutually locked, the rack 507 continues to move and drives the sliding seat 505 to move downward, the spring 506 is elastically deformed, at this time, the support frame 501 moves vertically downward, and the movable rod 503 is inserted into the wiring hole of the instrument and meter; when the rack 507 moves upward to the initial position, the clamping surface 509 is in contact with the rack 507, at this time, the rotation angle of the support frame 501 is limited.

[0040] In some embodiments of the present application, a connecting frame 511 is arranged on the support table 300 and connected with the two racks 507, and a sliding column 512 is arranged on the connecting frame 511; The detection device further comprises a fixed disc 513 coaxially arranged with the arc-shaped resistance plate 100 and fixedly arranged, a circumferential outer wall of the fixed disc 513 is provided with a ring groove, the ring groove is composed of an arc-shaped groove 514 and a U-shaped groove 515, and the sliding column 512 is used in cooperation with the ring groove.

[0041] As shown in Figure 2 and Figure 3 When the rotary table 200 rotates, the sliding column 512 on the support table 300 slides in the ring groove, when the sliding column 512 slides in the arc-shaped groove 514, the height position of the sliding column 512 does not change, at this time, the connecting structure 500 is in a connected state with the instrument and meter, when the sliding column 512 moves in the U-shaped groove 515, the sliding column 512 moves vertically upward, and then moves downward to the initial position, the upward movement of the sliding column 512 drives the connecting frame 511 and the rack 507 to move upward, the connecting structure 500 is separated from the instrument and meter, when a new instrument and meter is installed on the support table 300, the sliding column 512 moves downward and re-connects the connecting structure 500 with the instrument and meter, so that the automatic control connection mode is realized.

[0042] In some embodiments of the present application, a clamping structure 600 for clamping the instrument and meter is arranged on the support table 300, the clamping structure 600 comprises a contact column 601, two conductive plates 604 and two electromagnetic generators 605, the contact column 601 is slidably arranged on the support table 300, the contact column 601 is connected with the support table 300 through a spring piece 602, and a conductive plate one 603 is arranged at the end of the contact column 601, the conductive plate one 603 is used for connecting the conductive plate two 604 with an external circuit; Two electromagnetic generators 605 are oppositely arranged on the side walls of the support table 300, the electromagnetic generators 605 are electrically connected with the conductive plates two 604, and the extrusion plates 606 are correspondingly arranged on each electromagnetic generator 605, the magnets 607 used in cooperation with the electromagnetic generators 605 are arranged on the extrusion plates 606, and when the electromagnetic generators 605 are powered, the electromagnetic generators 605 and the magnets 607 repel each other, and the extrusion plates 606 are slidably arranged on the support table 300.

[0043] When the instrument is placed on the support table 300, the instrument extrudes the contact column 601, so that the contact column 601 slides downward on the support table 300, the elastic sheet 602 is elastically deformed, the conductive plate one 603 is in contact with the two conductive plates two 604, the external circuit is connected with the two electromagnetic generators 605, the electromagnetic generators 605 generate magnetic force and interact with the magnets 607, the magnets 607 drive the extrusion plates 606 to move away from the electromagnetic generators 605, at this time, the two magnets 607 are close to each other and extrude the instrument therebetween, so that the fixing work of the instrument is realized.

[0044] Of course, the contact column 601, the elastic sheet 602, the conductive plate one 603 and the conductive plate two 604 in the clamping structure 600 can also use other sensors or contact switches; the electromagnetic generators 605, the extrusion plates 606 and the magnets 607 can also use other electromagnetic driving structures.

[0045] The magnets 607 arranged on the extrusion plates 606 can attract the electromagnetic generators 605 when the electromagnetic generators 605 are powered off, so as to automatically retract the extrusion plates 606, and when the electromagnetic generators 605 are powered on, the repulsive force between the magnets 607 and the electromagnetic generators 605 can again push the extrusion plates 606 to extrude and fix the instrument.

[0046] In some embodiments of the application, two sliding plates 609 are rotatably arranged on the extrusion plates 606, the two sliding plates 609 are parallel to each other, the rotating column 608 is slidably sleeved on the sliding plate 609, and the rotating column 608 is rotatably arranged on the support table 300, and the limiting column 610 for limiting the direction of the sliding plate 609 is arranged on the support table 300. The side limiting edge 301 for limiting the instrument is arranged on the support table 300.

[0047] The limiting column 610 can guide the sliding plate 609 to keep the sliding plate 609 in the inclined state, and the magnet 607 is deviated from the electromagnetic generator 605. When the electromagnetic generator 605 is powered, the repulsion of the electromagnetic generator 605 to the magnet 607 is inclined, the pressing plate 606 is inclined to move towards the instrument and provides an inclined thrust to the instrument, the thrust can be decomposed into the interaction force between the two pressing plates 606 and the force towards the side flange 301, the force towards the side flange 301 can make the instrument abut against the side flange 301, thereby realizing the multi-directional fastening work of the instrument.

[0048] It should be pointed out that, by using the limiting column 610, the pressing plate 606 and the sliding plate 609 can be limited, when the two pressing plates 606 complete the relative pressing work on the instrument, the inclined repulsion between the electromagnetic generator 605 and the magnet 607 can still push the pressing plate 606 to move, at this time, the pressing plate 606 moves towards the side flange 301, the sliding plate 609 slides on the rotating column 608, and the rotating column 608 rotates, that is, the pressing between the side flange 301 and the instrument does not interfere with the pressing between the two pressing plates 606, thereby improving the diversity and freedom of the clamping mode of the clamping structure 600.

[0049] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. An automated instrument testing device, characterized in that, The device includes two arc-shaped resistance plates arranged in an inner and outer sleeve and coaxially arranged with each other, and a turntable capable of rotating on the axis of the arc-shaped resistance plates. The turntable is provided with a plurality of supports for placing instruments and meters. Each support is provided with two rolling elements that cooperate with the two arc-shaped resistance plates. The rolling elements are electrically connected to the corresponding arc-shaped resistance plates. The support is provided with two connection structures for connecting with instruments and meters, and the two connection structures are respectively electrically connected to the two rolling elements. A wire for connecting to an external circuit is provided at one end of the arc-shaped resistor plate.

2. The automated instrument testing device according to claim 1, characterized in that, The two ends of the arc-shaped resistor plate are close together, and an insulating block is provided between the two ends of the arc-shaped resistor plate. The arc-shaped resistor plate and the insulating block form a complete circle, and the rolling body performs circular motion on the complete circle.

3. The instrument and meter testing device based on automation according to claim 1, characterized in that, The wall thickness of the arc-shaped resistor plate gradually changes from one end to the other.

4. The automated instrument testing device according to claim 1, characterized in that, The rolling element includes a core column rotatably mounted on the support platform, a rubber layer disposed on the outside of the core column, and a conductive layer disposed on the outside of the rubber layer. The conductive layer is electrically connected to the connecting structure through the core column, and both the rubber layer and the conductive layer can be deformably disposed.

5. The automated instrument testing device according to claim 1, characterized in that, The connection structure includes a support frame that can move on the support platform, a fixed sleeve disposed on the support frame, and a movable rod that slides through the fixed sleeve. The fixed sleeve and the movable rod are connected by a plurality of conductive plates, and the conductive plates are electrically connected to the core column.

6. The instrument and meter testing device based on automation according to claim 5, characterized in that, The connecting structure further includes a slide block slidably disposed on the support platform. A rack and a gear are disposed on the slide block. The rack is slidably disposed on the slide block, and the gear is rotatably disposed on the slide block. The support frame is fixed relative to the gear, and the rack and the gear are meshed with each other.

7. The instrument and meter testing device based on automation according to claim 6, characterized in that, The support frame is provided with a locking surface that cooperates with the rack, and the end of the rack is provided with a limiting body for limiting the gear. The slide and the support are connected by a spring.

8. The instrument and meter testing device based on automation according to claim 7, characterized in that, A connecting frame is slidably mounted on the support platform, the connecting frame is connected to the two racks, and a sliding column is provided on the connecting frame; The detection device also includes a fixed disk coaxially arranged and relatively fixed with the arc-shaped resistance plate. An annular groove is formed on the outer circumference of the fixed disk. The annular groove is composed of an arc-shaped groove and a U-shaped groove. The sliding column is used in conjunction with the annular groove.

9. The instrument and meter testing device based on automation according to claim 1, characterized in that, A clamping structure for holding instruments is provided on the support platform. The clamping structure includes a contact post, two conductive plates, and two electromagnetic generators. The contact post is slidably disposed on the support platform. The contact post is connected to the support platform by a spring clip. A conductive plate is provided at the end of the contact post. The conductive plate is used to connect the conductive plate to an external circuit. Two electromagnetic generators are disposed opposite each other on the side wall of the support platform. The electromagnetic generators are electrically connected to the conductive plate. Each electromagnetic generator is provided with a corresponding extrusion plate. The extrusion plate is provided with a magnet that works in conjunction with the electromagnetic generator. When the electromagnetic generator is energized, the electromagnetic generator and the magnet repel each other. The extrusion plate is slidably disposed on the support platform.

10. An automated instrument testing device according to claim 9, characterized in that, Two sliding plates are rotatably mounted on the extrusion plate. The two sliding plates are parallel to each other. A rotating column is slidably mounted on the sliding plate. The rotating column is rotatably mounted on the support platform. A limiting column for limiting the direction of the sliding plate is provided on the support platform. The support platform is provided with side guards for limiting the movement of instruments and meters.

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