Resistance testing equipment

Abstract

The utility model discloses resistance testing equipment, which relates to the technical field of testing equipment and comprises an equipment rack, and a resistance conveying mechanism and a resistance detecting mechanism are fixedly mounted on the inner side of the equipment rack respectively. The resistor detection mechanism is arranged on the rear side of the resistor conveying mechanism; according to the resistor feeding device, in the resistor conveying mechanism, the lifting linear module drives the push rod to achieve stable resistor feeding, and position deviation caused by manual feeding is avoided; the fixture linear module is matched with a driving cylinder, and a positioning adjusting wheel I and a positioning adjusting wheel II controlled by a cylinder rod, so that the positioning parameters of the carrier base can be flexibly adjusted according to resistors with different packaging specifications; after manual carrying is replaced by automatic conveying, the conveying time of a single resistor is greatly shortened, the conveying efficiency and compatibility are improved, and the large-scale production requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field, specifically a resistance test equipment. BACKGROUND

[0002] At the moment of the rapid development of electronic information industry, as the core component of realizing current limiting, voltage dividing and other basic functions in circuit system, the resistance value precision and stability of resistance directly determine the operation reliability of terminal electronic equipment. Therefore, the performance test after the resistance production link becomes the key process of guaranteeing product quality, and the requirements of test efficiency, precision and automation degree are increasing.

[0003] At present, there are still many technical pain points in the resistance test link in the industry: the traditional test mode mainly relies on manual operation, and the staff needs to manually transfer the resistance from the magazine to the test station, and then holds the probe or uses the simple clamp to complete parameter detection. Not only the single test cycle is as long as 10-15 seconds, which is difficult to match the high rhythm demand of large-scale production, but also the test result deviation is caused by manual fatigue and operation error, so that unqualified products flow into the downstream link; although part of the semi-automatic test equipment realizes single automation of resistance carrying or detection, the problem of low mechanism integration exists - the resistance conveying mechanism and the detection mechanism are independent of each other, and need to be connected through a conveyor belt and other intermediate transfer devices, which not only increases the equipment floor area, but also easily causes resistance bumping and position deviation in the transfer process, further affecting the test precision.

[0004] In addition, the adaptability and reliability of the existing equipment need to be improved: on the one hand, the resistance positioning relies on fixed specification clamps, and the positioning parameters cannot be flexibly adjusted according to resistance of different packaging specifications, and the clamps need to be disassembled and replaced when the product is changed, which is time-consuming and laborious; on the other hand, most of the equipment adopts vacuum adsorption type resistance carrying structure, but lacks pressure monitoring device, which easily causes resistance falling damage due to insufficient adsorption force, or damages resistance body due to excessive adsorption force; at the same time, the whole equipment needs to be moved by using a forklift and other tools, and the top cover needs to be disassembled by using many screws to open during maintenance, so the maintenance convenience is poor, and the real-time state warning function is lacked, so it is difficult for workers to find equipment failure in time, which easily causes batch test abnormality. In summary, the existing technology cannot meet the production needs of modern electronic manufacturing industry such as "high efficiency, high precision, high compatibility and easy maintenance", and it is an urgent need to develop an integrated and automated resistance test equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a resistance test equipment, which is installed with resistance conveying mechanism and resistance detection mechanism and equipment rack, so as to improve the efficiency, precision, compatibility and maintainability of the resistance test equipment; and solve the technical problems in the background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A resistance testing device, comprising

[0008] The device rack, the device rack inside fixedly installed resistance conveying mechanism and resistance detection mechanism respectively, resistance detection mechanism is located in the rear side of resistance conveying mechanism,

[0009] The resistance conveying mechanism includes the lifting linear module, the lifting linear module upper end is connected with the push rod, the push rod upper end is located in the inside of resistance placing frame seat, the resistance placing frame seat is fixedly installed on the installation plate provided on the rack body in the through type, the installation plate lower surface provided on the rack body is fixedly connected with the lifting linear module upper end,

[0010] The lifting linear module, the push rod and the resistance placing frame seat are provided with four groups in rectangular array, three groups are located in the right side of the fixture linear module, and one group is located in the left side of the fixture linear module.

[0011] As a further technical scheme of the utility model, the fixture linear module lower end is fixedly installed on the installation plate upper surface provided on the rack body, the slide base on the fixture linear module is fixedly connected with the installation base, and the left side edge and the rear side edge of the installation base upper surface are fixedly installed with drive cylinder and cylinder rod respectively.

[0012] As a further technical scheme of the utility model, the drive cylinder and the cylinder rod end are connected with positioning adjusting wheel one and positioning adjusting wheel two respectively, and positioning adjusting wheel one and positioning adjusting wheel two are connected with the sliding groove provided in the left side and the rear side of the carrier base interior respectively.

[0013] As a further technical scheme of the utility model, the carrier base is fixedly installed on the installation base upper surface, the fixture linear module upper end is provided with resistance carrying linear module, a plurality of fixing bases are fixedly installed at the resistance carrying linear module lower end, and the fixing base lower end is fixedly connected with the installation plate upper surface provided on the rack body.

[0014] As a further technical scheme of the utility model, the resistance carrying linear module front side slide base is connected with the slide platform cylinder, the slide platform cylinder front side slide base is connected with the vacuum chuck seat, and the digital display vacuum pressure switch is fixedly installed on the vacuum chuck seat upper end.

[0015] As a further technical scheme of the utility model, the resistance carrying linear module rear side is provided with the support stand, the support stand lower end is fixedly installed on the installation plate upper surface provided on the rack body, the support stand upper end is fixedly connected with the X-axis linear module, and the X-axis linear module front side slide base is connected with the Y-axis linear module.

[0016] As a further technical scheme of the utility model, the Y-axis linear module front side sliding seat is connected with the mounting plate, the industrial camera, the light source ring, the micro platform push rod and the symmetrical probe assembly are respectively installed on the front side of the mounting plate.

[0017] As a further technical scheme of the utility model, the micro platform push rod is arranged on the left side of the light source ring, and the end of the micro platform push rod is connected with the probe assembly on the left side; the symmetrical probe assembly is arranged on the lower end of the light source ring, and a plurality of probes for detection are fixedly installed directly below the light source ring.

[0018] As a further technical scheme of the utility model, the rack body top is fixedly installed with a magnetic top cover, the upper end left side of the rack body is fixedly installed with a control module, the lower end left side of the rack body is fixedly installed with a pneumatic element, and the moving wheels are fixedly installed at the four corners of the lower end of the rack body.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The utility model discloses, through the moving wheel of the four corners of the lower end of the rack body, can easily shift the equipment to different production stations, adapts to the production layout demand of multiple scenes, does not need to rely on the heavy equipment such as forklift, simultaneously, the magnetic top cover of the rack body top adopts magnetic type fixation, can be quickly disassembled without tools, and the staff can directly overhaul the core components of the resistance conveying mechanism and resistance detection mechanism, and the maintenance time is shortened by more than 50%, and the maintenance cost is reduced.

[0021] The utility model discloses, in the resistance conveying mechanism, the lifting linear module drive push rod realizes the stable feeding of resistance, avoids the position deviation of artificial feeding;The positioning adjusting wheel one, positioning adjusting wheel two controlled by the driving cylinder, cylinder rod of clamp linear module cooperation can flexibly adjust the positioning parameter of carrier base according to different packaging specifications resistance;After the automatic conveying replaces artificial handling, the single resistance conveying time is greatly shortened, the conveying efficiency and compatibility are improved, and the large-scale production demand is met.

[0022] The utility model discloses, the resistance handling linear module and slide table cylinder cooperation drive vacuum chuck seat, realize the accurate grabbing of resistance;Digital display vacuum pressure switch can real-time monitoring adsorption pressure, when the pressure is lower than the set threshold value, immediately sends the signal to the control module, and the equipment pauses the grabbing action and alarms through the three-color warning light column, avoids the damage of resistance drop due to the insufficient adsorption force, and improves the success rate of grabbing.

[0023] The utility model discloses, resistance detection mechanism, X axis linear module and Y axis linear module realize the flexible adjustment of installation board multidimension, cooperate with the image positioning of industrial camera and light ring, ensure that the probe subassembly accurately aligns resistance pin, and the adjustable nature of left probe subassembly is realized to the probe subassembly of micro - platform push rod, and the adaptability of different resistance test is promoted, and the compatibility and detection accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0025] Figure 2 It is the top view of the utility model. Figure 1

[0026] Figure 3 It is the split structure schematic diagram of the utility model. Figure 1

[0027] Figure 4 It is the split structure schematic diagram of the utility model. Figure 2

[0028] Figure 5 It is the bottom view of the utility model. Figure 4

[0029] Figure 6 It is the split structure schematic diagram of the utility model. Figure 4

[0030] Figure 7 It is the top view of the utility model. Figure 6

[0031] Figure 8 It is the local enlarged schematic diagram of the utility model. Figure 4

[0032] Figure 9 It is the local enlarged schematic diagram of the utility model. Figure 6

[0033] Figure 10 It is the local enlarged schematic diagram of the utility model. Figure 7

[0034] In the drawing: 1 - equipment rack, 2 - resistance conveying mechanism, 3 - resistance detection mechanism;

[0035] 11 - rack body, 12 - moving wheel, 13 - control module, 14 - pneumatic element, 15 - magnetic top cover, 16 - three-color warning light column;

[0036] ​​​​​​​​​21-lifting linear module, 22-push rod, 23-resistor placement frame seat, 24-clamp linear module, 25-mounting base, 26-driving cylinder, 27-positioning adjustment wheel one, 28-carrier base, 29-cylinder rod, 210-positioning adjustment wheel two, 211-fixing seat, 212-resistor carrying linear module, 213-vacuum chuck seat, 214-digital vacuum pressure switch, 215-sliding table cylinder;

[0037] 31-supporting column, 32-X-axis linear module, 33-Y-axis linear module, 34-industrial camera, 35-light source ring, 36-micro platform push rod, 37-probe assembly, 38-mounting plate. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0039] Please refer to Figures 1-10 In the embodiments of the utility model, a resistor testing device comprises a device rack 1, and a resistor conveying mechanism 2 and a resistor detecting mechanism 3 are fixedly installed on the inner side of the device rack 1 respectively; the resistor detecting mechanism 3 is arranged on the rear side of the resistor conveying mechanism 2;

[0040] The resistor conveying mechanism 2 comprises a lifting linear module 21, the upper end of the lifting linear module 21 is connected with a push rod 22, the upper end of the push rod 22 is arranged on the inner side of a resistor placement frame seat 23, the resistor placement frame seat 23 is fixedly installed on the mounting plate arranged on the rack body 11 in a penetrating mode, and the lower surface of the mounting plate arranged on the rack body 11 is fixedly connected with the upper end of the lifting linear module 21;

[0041] The lifting linear module 21, the push rod 22 and the resistor placement frame seat 23 are arranged in a rectangular array mode and are provided with four groups, three groups of which are arranged on the right side of a clamp linear module 24, and one group is arranged on the left side of the clamp linear module 24;

[0042] The lower end of the clamp linear module 24 is fixedly installed on the upper surface of the mounting plate arranged on the rack body 11, the sliding seat on the clamp linear module 24 is fixedly connected with a mounting base 25, and the left side edge and the rear side edge of the upper surface of the mounting base 25 are fixedly installed with a driving cylinder 26 and a cylinder rod 29 respectively;

[0043] The driving cylinder 26 and the end part of the cylinder rod 29 are respectively connected with the positioning adjusting wheel one 27 and the positioning adjusting wheel two 210, and the positioning adjusting wheel one 27 and the positioning adjusting wheel two 210 are respectively connected with the sliding grooves arranged on the left side and the rear side of the inside of the carrier base 28.

[0044] By adopting the above technical scheme, in the resistance conveying mechanism 2, the lifting linear module 21 drives the push rod 22 to realize stable feeding of the resistance, so as to avoid position deviation of manual feeding; the clamp linear module 24 cooperates with the positioning adjusting wheel one 27 and the positioning adjusting wheel two 210 controlled by the driving cylinder 26 and the cylinder rod 29, so that the positioning parameters of the carrier base 28 can be flexibly adjusted according to different packaging specifications of the resistance; after the automatic conveying replaces manual carrying, the single resistance conveying time is greatly shortened, the conveying efficiency and the compatibility are improved, and the demand of large-scale production is met.

[0045] In the embodiment, the carrier base 28 is fixedly installed on the upper surface of the mounting base 25; the upper end of the clamp linear module 24 is provided with a resistance carrying linear module 212, a plurality of fixing seats 211 are fixedly installed at the lower end of the resistance carrying linear module 212, and the lower ends of the fixing seats 211 are fixedly connected with the upper surface of the mounting plate arranged on the rack body 11.

[0046] The front side sliding seat of the resistance carrying linear module 212 is connected with the sliding table cylinder 215, the front side sliding seat of the sliding table cylinder 215 is connected with the vacuum suction disc seat 213, and the digital vacuum pressure switch 214 is fixedly installed at the upper end of the vacuum suction disc seat 213.

[0047] By adopting the above technical scheme, the resistance carrying linear module 212 cooperates with the sliding table cylinder 215 to drive the vacuum suction disc seat 213, so as to realize accurate grabbing of the resistance; the digital vacuum pressure switch 214 can monitor the adsorption pressure in real time, and when the pressure is lower than the set threshold value, a signal is immediately sent to the control module 13, the equipment pauses the grabbing action and alarms through the three-color warning light column 16, so as to avoid damage of the resistance due to insufficient adsorption force, and the grabbing success rate is improved.

[0048] In the embodiment, the rear side of the resistance carrying linear module 212 is provided with the supporting stand 31, the lower end of the supporting stand 31 is fixedly installed on the upper surface of the mounting plate arranged on the rack body 11, the upper end of the supporting stand 31 is fixedly connected with the X-axis linear module 32, and the front side sliding seat of the X-axis linear module 32 is connected with the Y-axis linear module 33.

[0049] The front side sliding seat of the Y-axis linear module 33 is connected with the mounting plate 38, the industrial camera 34, the light source ring 35, the micro platform push rod 36 and the probe assembly 37 arranged in a symmetrical and opposite manner are respectively installed on the front side of the mounting plate 38; the industrial camera 34 is arranged on the upper end of the light source ring 35.

[0050] The micro platform push rod 36 is arranged on the left side of the light source ring 35, and the end of the micro platform push rod 36 is connected with the probe assembly 37 on the left side; the symmetrically arranged probe assemblies 37 are arranged at the lower end of the light source ring 35, and a plurality of probes for detection are fixedly installed below the light source ring 35.

[0051] By adopting the above technical scheme, in the resistance detection mechanism 3, the X-axis linear module 32 and the Y-axis linear module 33 realize multi-dimensional flexible adjustment of the mounting plate 38, cooperate with image positioning of the industrial camera 34 and the light source ring 35, and ensure that the probe assembly 37 is accurately aligned with the resistance pin; the micro platform push rod 36 drives the probe assembly 37 to realize adjustability of the left probe assembly 37, adapt to different resistance tests, and improve compatibility and detection accuracy.

[0052] In the embodiment, the magnetic top cover 15 is fixedly installed on the top of the rack body 11, the control module 13 is fixedly installed on the upper left side of the rack body 11, the pneumatic element 14 is fixedly installed on the lower left side of the rack body 11, and the moving wheels 12 are fixedly installed at the four corners of the lower end of the rack body 11.

[0053] By adopting the above technical scheme, the equipment can be easily transferred to different production stations through the moving wheels 12 at the four corners of the lower end of the rack body 11, and the production layout demand of multiple scenes can be adapted without relying on forklifts and other heavy equipment; at the same time, the magnetic top cover 15 on the top of the rack body 11 is fixed by magnetic attraction, and can be quickly disassembled without tools, so that the staff can directly overhaul the core components of the resistance conveying mechanism 2 and the resistance detection mechanism 3, the maintenance time is shortened by more than 50%, and the maintenance cost is reduced.

[0054] The working principle of the utility model is: the resistance to be tested is pre-placed in the resistance placing frame seat 23, the control module 13 sends an instruction, drives the lifting linear module 21 to drive the push rod 22 to rise, and the resistance in the resistance placing frame seat 23 is lifted to a height convenient for grabbing, and the feeding preparation is completed.

[0055] The resistance conveying linear module 212 drives the front slide seat to move above the resistance, the slide table cylinder 215 drives the vacuum suction disc seat 213 to descend, and the resistance to be tested is sucked by vacuum adsorption; at the same time, the digital vacuum pressure switch 214 on the upper end of the vacuum suction disc seat 213 monitors the adsorption pressure in real time, ensures that the pressure meets the set threshold, and avoids the resistance from falling; then, the resistance conveying linear module 212 drives the adsorbed resistance to move above the carrier base 28, the slide table cylinder 215 drives the vacuum suction disc seat 213 to descend and release the resistance, and the resistance is transferred in the process; then the driving cylinder 26 and the cylinder rod 29 respectively push the positioning adjusting wheel one 27 and the positioning adjusting wheel two 210, move along the sliding groove of the carrier base 28, and complete the accurate positioning of the resistance.

[0056] After positioning, the fixture linear module 24 drives the resistance on the carrier base 28 to move below the symmetrically arranged support column 31 probe assembly 37; At this time, the X-axis linear module 32 drives the Y-axis linear module 33 to move, adjusts the position of the mounting plate 38; The industrial camera 34 collects images of the resistance on the carrier under the light source ring 35, accurately identifies the resistance pin position, and ensures the test positioning accuracy;

[0057] At the same time, the miniature platform push rod 36 pushes the left probe assembly 37, cooperates with the right fixed probe assembly 37, uses multiple probe flexible clamping resistance pins, completes resistance, voltage resistance and other parameter tests; The test data is transmitted to the control module 13 for analysis and judgment in real time; After detection, the resistance on the carrier base 28 is moved below the vacuum chuck base 213 by the fixture linear module 24, and the resistance is placed on another three resistance placing frame bases 23 by the vacuum chuck base 213, so as to complete the detection;

[0058] Through the moving wheels 12 at the lower end of the rack body 11, the equipment can be easily transferred to different production stations to adapt to the production layout requirements of multiple scenes without relying on forklifts and other heavy equipment; At the same time, the magnetic top cover 15 at the top of the rack body 11 is fixed by magnetic attraction, which can be quickly disassembled without tools, and the staff can directly overhaul the core components of the resistance conveying mechanism 2 and the resistance detection mechanism 3, so that the maintenance time is shortened by more than 50%, and the maintenance cost is reduced;

[0059] In the resistance conveying mechanism 2, the lifting linear module 21 drives the push rod 22 to realize stable feeding of the resistance, avoiding position deviation of manual feeding; The fixture linear module 24 cooperates with the positioning adjustment wheel one 27 and the positioning adjustment wheel two 210 controlled by the driving cylinder 26 and the cylinder rod 29, so that the positioning parameters of the carrier base 28 can be flexibly adjusted according to different packaging specifications; After automatic conveying replaces manual carrying, the single resistance conveying time is greatly shortened, the conveying efficiency and compatibility are improved, and the large-scale production demand is met;

[0060] The resistance carrying linear module 212 cooperates with the sliding table cylinder 215 to drive the vacuum chuck base 213 to realize accurate grabbing of the resistance; The digital vacuum pressure switch 214 can monitor the suction pressure in real time, and when the pressure is lower than the set threshold, it immediately sends a signal to the control module 13, the equipment pauses the grabbing action and alarms through the three-color warning light column 16, avoiding the damage of the resistance due to insufficient suction force, and improving the grabbing success rate;

[0061] In the resistance detection mechanism 3, the X-axis linear module 32 and the Y-axis linear module 33 realize flexible adjustment of the mounting plate 38 in multiple dimensions, cooperate with the image positioning of the industrial camera 34 and the light source ring 35, and ensure that the probe assembly 37 is accurately aligned with the resistance pin; the miniature platform push rod 36 pushes the probe assembly 37 to realize the adjustability of the left probe assembly 37, adapt to different resistance tests, and improve the compatibility and detection precision.

[0062] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0063] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the skilled person should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that can be understood by the skilled person.

Claims

1. A resistance testing apparatus, characterized by: The utility model relates to a kind of resistance detection device, including Device rack (1), resistance conveying mechanism (2) and resistance detection mechanism (3) are respectively fixedly installed inside the device rack (1);The resistance detection mechanism (3) is located in the rear side of resistance conveying mechanism (2); The resistance conveying mechanism (2) includes lifting linear module (21), the upper end of lifting linear module (21) is connected with push rod (22), the upper end of push rod (22) is located in the inside of resistance placement frame seat (23), resistance placement frame seat (23) is fixedly installed on the mounting plate provided on rack body (11) in through type, the lower surface of mounting plate provided on rack body (11) is fixedly connected with the upper end of lifting linear module (21); The lifting linear module (21), push rod (22) and resistance placement frame seat (23) are provided with four groups in rectangular array, wherein three groups are located in the right side of clamp linear module (24), one group is located in the left side of clamp linear module (24).

2. The resistance testing apparatus of claim 1, wherein: The lower end of clamp linear module (24) is fixedly installed on the upper surface of mounting plate provided on rack body (11), the sliding seat on clamp linear module (24) is fixedly connected with mounting base (25), the left side and rear side of upper surface of mounting base (25) are respectively fixedly installed with drive cylinder (26) and cylinder rod (29).

3. The resistance testing apparatus of claim 2, wherein: The end part of drive cylinder (26) and cylinder rod (29) is respectively connected with positioning adjusting wheel one (27) and positioning adjusting wheel two (210), and positioning adjusting wheel one (27) and positioning adjusting wheel two (210) are respectively connected with the sliding groove provided in the left side and rear side of inside of carrier base (28).

4. The resistance testing apparatus of claim 3, wherein: The carrier base (28) is fixedly installed on the upper surface of mounting base (25);The upper end of clamp linear module (24) is provided with resistance carrying linear module (212), and a plurality of fixing bases (211) are fixedly installed on the lower end of resistance carrying linear module (212), and the lower end of a plurality of fixing bases (211) is fixedly connected with the upper surface of mounting plate provided on rack body (11).

5. The resistance testing apparatus of claim 4, wherein: The front sliding seat of resistance carrying linear module (212) is connected with sliding table cylinder (215), the front sliding seat of sliding table cylinder (215) is connected with vacuum chuck seat (213), and digital vacuum pressure switch (214) is fixedly installed on the upper end of vacuum chuck seat (213).

6. The resistance testing apparatus of claim 5, wherein: The rear side of resistance carrying linear module (212) is provided with support stand (31), the lower end of support stand (31) is fixedly installed on the upper surface of mounting plate provided on rack body (11), the upper end of support stand (31) is fixedly connected with X-axis linear module (32), and the front sliding seat of X-axis linear module (32) is connected with Y-axis linear module (33).

7. The resistance testing apparatus of claim 6, wherein: The front sliding seat of Y-axis linear module (33) is connected with mounting plate (38), and industrial camera (34), light source ring (35), micro platform push rod (36) and probe assembly (37) symmetrically arranged are respectively installed on the front side of mounting plate (38);The industrial camera (34) is located on the upper end of light source ring (35).

8. The resistance testing apparatus of claim 7, wherein: The micro platform push rod (36) is arranged on the left side of the light source ring (35), and the end of the micro platform push rod (36) is connected with the probe assembly (37) on the left side; the symmetrically arranged probe assemblies (37) are arranged on the lower end of the light source ring (35), and a plurality of probes for detection are fixedly installed below the light source ring (35).

9. The resistance testing apparatus of claim 6, wherein: The upper surface of the mounting plate arranged on the rack body (11) is also fixedly installed with a three-color warning light column (16); the rack body (11) is fixedly installed with a magnetic top cover (15) on the top, a control module (13) is fixedly installed on the left side of the upper end of the rack body (11), a pneumatic element (14) is fixedly installed on the left side of the lower end of the rack body (11), and a movable wheel (12) is fixedly installed at each of the four corners of the lower end of the rack body (11).

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