A device for testing resistor performance

Abstract

The present invention belongs to the technical field of resistor performance testing, and in particular, is a device for testing resistor performance. In response to the problems of existing testing devices being cumbersome to operate and use, requiring multiple tests to be conducted separately, resulting in low work efficiency and an inability to quickly test resistors, the following solution is proposed, comprising: a test box having four footings at the bottom, an open structure on the left side of the test box and a box cover mounted thereon by hinges, and a ventilation hole on the right side of the test box. The conductive plate provided in the present invention secures the resistor by clamping, and can accommodate the secure use of resistors of different types and sizes. When the support platform is pushed toward the inside of the test box, the conductive structure is first energized, forming a resistor loop, enabling resistance testing. A temperature sensor then moves downward to contact the resistor to measure the resistor's temperature, and the temperature sensor measures the surface temperature of the resistor.

Description

Technical Field

[0001] The present invention relates to the technical field of resistor performance testing, and in particular to a resistor performance testing device. Background Art

[0002] Resistors, often simply called resistors, are current-limiting components. When connected to a circuit, a resistor has a fixed resistance, typically consisting of two pins. It limits the current flowing through the connected circuit. Resistors with fixed resistance are called fixed resistors. Resistors with variable resistance are called potentiometers or variable resistors. Ideally, a resistor is linear, meaning the instantaneous current flowing through it is proportional to the applied voltage. There are many types of resistors, including wirewound resistors. Wirewound resistors are made of constantan, nickel-chromium, or manganese copper wire wound around a porcelain tube or insulating bobbin. Wirewound resistors are relatively large, but offer low resistance, low noise, stability, reliability, and high-temperature resistance. They are widely used in high-power circuits. However, their small resistance performance cannot be directly measured, especially at high temperatures, making direct resistance testing difficult. After production, resistors undergo quality inspection, during which parameters such as resistance and heat generation are tested.

[0003] The existing testing device is cumbersome to operate and use, multiple tests are performed separately, the work efficiency is low, and the resistor cannot be tested quickly. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of existing testing devices, such as cumbersome operation and use, multiple tests are tested separately, low working efficiency, and inability to quickly test resistors, and to propose a resistor performance testing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for testing resistor performance, comprising:

[0007] The test box has four feet at the bottom, the left side of the test box is an open structure and a box cover is installed by hinge rotation, the right side of the test box has an air vent, and a fan is provided inside the air vent;

[0008] A support platform, with a socket provided on the front of the test box, the support platform matches the socket;

[0009] A conductive structure is provided on the inner side of the supporting platform and is used to connect to the power supply;

[0010] A resistor test bench is provided on the top of the support platform, and is used to fix a resistor. Both ends of the resistor are provided with pins, and both pins are matched with the resistor test bench;

[0011] The temperature measuring mechanism is installed on the top inner wall of the test box and cooperates with the supporting platform to measure the temperature of the surface of the resistor.

[0012] Furthermore, the box cover is provided with transparent glass, a plurality of heat dissipation holes are opened on the box cover, and a lock is provided on the box cover.

[0013] The interior of the test box can be observed through the transparent glass. The heat dissipation holes are used for ventilation and heat dissipation. The lock buckle is used to fix the box cover to the test box.

[0014] Furthermore, a controller is provided on the front of the box cover, and the controller has a built-in display screen.

[0015] Used to control electrical appliances through controllers.

[0016] Furthermore, the support platform includes a rectangular platform with two T-slots on the bottom. Two T-blocks are provided on the inner wall of the bottom of the socket, and the T-blocks are slidably connected with the T-slots.

[0017] The cooperation between the T-block and the T-slot can ensure the horizontal sliding connection of the support platform. Since the front end of the T-slot is in a blocked state, the support platform will not be separated from the T-block.

[0018] Furthermore, a blocking plate is provided on the outside of the rectangular table, a handle is provided on the outside of the blocking plate, two positioning grooves are provided on the inside of the blocking plate, and two positioning rods are symmetrically installed on the front side of the test box on the outside of the socket, and both positioning rods are attracted by magnet blocks, and the two magnet blocks are embedded in the inner walls of the two positioning grooves.

[0019] By inserting the positioning rod into the positioning groove, the blocking plate can be positioned outside the insertion hole. The attraction between the magnet block and the positioning rod improves the stability of the blocking plate and prevents the blocking plate from displacement.

[0020] Furthermore, the conductive structure includes a first insulating plate, which is fixedly mounted on the front end of the rectangular table. Two conductive blocks are fixedly mounted on the outer side of the first insulating plate, and both conductive blocks are connected to wires. A second insulating plate is provided on the inner wall of the test box, and a bridge conductor is provided on the second insulating plate. Both conductive blocks cooperate with the bridge conductor.

[0021] By connecting the two conductive blocks with a bridge conductor, the two conductive blocks can form an electrical loop.

[0022] Furthermore, the resistor test bench includes a test board, which is fixedly mounted on the top of the rectangular table. Two notch grooves are symmetrically opened on the top of the test board, and the same arc-shaped notch is opened between the two notch grooves. The arc-shaped notch is used to place the resistor.

[0023] Furthermore, two conductive plates are symmetrically slidably installed in the notch groove, an arc-shaped surface is provided on the top of the conductive plate, the wire is connected to the conductive plate, two slide cylinders are fixedly installed on the outer side of the conductive plate, two guide rods are fixedly installed on the inner walls on both sides of the notch groove, the guide rods are slidably connected to the inner walls of the corresponding slide cylinders, and a spring is fixedly installed between the guide rods and the slide cylinder.

[0024] The spring provides elastic force to the slide and the conductive plate, so that the two conductive plates are close to each other. The pins on the resistor are clamped and fixed by the clamping force between the two conductive plates, and a power-on test is performed.

[0025] Furthermore, the temperature measuring mechanism includes four fixed rods, and the four fixed rods are fixedly installed on the top inner wall of the test box. The same test mounting plate is slidably installed on the outer sides of the four fixed rods, and a vertical block is fixedly installed on the bottom of the test mounting plate. A sensor fixing block is provided on the front side of the vertical block, and a slot is reserved on the sensor fixing block. A temperature measuring sensor is fixed in the slot, and the temperature measuring sensor is electrically connected to the controller. The bottom ends of the four fixed rods are fixedly installed with a limiting plate, and the outer sides of the four fixed rods are sleeved with a pressure spring, the bottom end of the pressure spring is fixedly installed with the limiting plate, and the top end of the pressure spring is fixedly installed with the test mounting plate.

[0026] The surface temperature of the resistor is measured by a temperature sensor, and the temperature measurement result is sent to the controller. Under normal circumstances, the test mounting plate drives the temperature sensor to be located above the level of the test plate through the vertical block and the sensor fixing block through the elastic force of the pressure spring.

[0027] Furthermore, two vertical plates are symmetrically fixedly installed on the bottom of the test mounting plate, and round rods are provided on the inner sides of the two vertical plates. Balls are embedded in the inner sides of the two round rods, and inclined grooves are provided on both sides of the support platform. The two round rods are slidably connected to the inner walls of the two inclined grooves.

[0028] By moving the supporting platform, the two inclined slides squeeze the two round rods, and the round rods rely on the ball bearings to reduce the friction between the inclined slides and the round rods. When the supporting platform is pushed toward the inside of the test box, the inclined slides squeeze the round rods to drive the vertical plate to move downward, and the two vertical plates drive the test mounting plate to move downward. The test mounting plate drives the temperature sensor downward through the vertical block and the sensor fixing block to contact the resistor to measure the temperature of the resistor. When the rectangular platform is pulled outward, the inclined slides relax the squeezing of the round rods, and the test mounting plate is reset through the elastic force of the pressure spring.

[0029] In the present invention, the beneficial effects of the resistor performance testing device are as follows:

[0030] In this solution, the blocking plate is moved by pulling the handle, and the blocking plate drives the rectangular platform out of the test box, and the resistor is placed in the arc-shaped notch. The two pins are respectively inserted between the two conductive plates. The spring provides elastic force for the slide cylinder and the conductive plate, so that the two conductive plates are close to each other. The pins on the resistor are clamped and fixed by the clamping force between the two conductive plates. Then the rectangular platform is pushed back, and the blocking plate can be positioned outside the socket by inserting the positioning rod into the positioning groove. The attraction between the magnet block and the positioning rod improves the stability of the blocking plate, avoids displacement of the blocking plate, and can quickly fix the resistor. The conductive plate is provided to fix the resistor by clamping, which can adapt to the fixed use of resistors of different types and sizes.

[0031] In this solution, when the rectangular platform is reset, the bridge conductor is connected to the two conductive blocks, so that the two conductive blocks can form a power loop, so that the conductive plate is energized, and the current will flow through the resistor for power-on test to test the resistance value of the resistor;

[0032] This solution moves the support platform so that the two inclined chutes squeeze the two round rods. The round rods rely on ball bearings to reduce the friction between the inclined chutes and the inclined chutes. When the support platform is pushed toward the inside of the test box, the inclined chutes squeeze the round rods, driving the vertical plate downward. The two vertical plates drive the test mounting plate downward. The test mounting plate drives the temperature sensor downward through the vertical block and the sensor fixing block to contact the resistor to measure the resistor temperature. The temperature sensor measures the surface temperature of the resistor and sends the temperature measurement result to the controller.

[0033] In this solution, when the support platform is pulled outward, the inclined slide releases the squeeze on the round rod, and the test mounting plate is reset by the elastic force of the pressure spring. The test mounting plate drives the temperature sensor to be located above the horizontal level of the test plate through the vertical block and the sensor fixing block;

[0034] In this solution, two fans are working to ventilate the inside of the test box. Since a resistor test has just been completed, the temperature inside the test box will increase. By cooling it down, the temperature inside the test box is made the same as the outside temperature to avoid affecting the test results.

[0035] The conductive plate provided in the present invention fixes the resistor in a clamping manner, and can be adapted to the fixed use of resistors of different types and sizes. When the support platform is pushed toward the inside of the test box, the conductive structure is first energized to form a circuit of the resistor, so that a resistance test can be performed. Secondly, the temperature sensor moves downward to contact the resistor to measure the temperature of the resistor. The temperature of the surface of the resistor is measured by the temperature sensor. The action is completed in one go, the test efficiency is high, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a resistor performance testing device proposed by the present invention;

[0037] Figure 2 The present invention proposes Figure 1 Schematic diagram of the right view structure;

[0038] Figure 3 The present invention proposes Figure 2 Schematic diagram of the structure viewed from above;

[0039] Figure 4 The present invention proposes Figure 1 Schematic diagram of the structure of the box cover being removed;

[0040] Figure 5 This is a structural diagram of the support platform, resistor test bench, temperature measurement mechanism and related parts proposed in the present invention;

[0041] Figure 6 The present invention proposes Figure 5 Schematic diagram of the right view structure;

[0042] Figure 7 This is a bottom-up structural diagram of the support platform, conductive structure, and related parts proposed in the present invention;

[0043] Figure 8 This is a schematic structural diagram of the resistor test bench and its related parts proposed by the present invention;

[0044] Figure 9 The present invention proposes Figure 8 Schematic diagram of the cross-sectional structure;

[0045] Figure 10 This is a schematic diagram of the three-dimensional structure of the test board proposed in the present invention;

[0046] Figure 11 This is a schematic cross-sectional view of the slide and spring proposed in the present invention;

[0047] Figure 12 This is a schematic diagram of the structure of the slide proposed by the present invention;

[0048] Figure 13 This is a schematic diagram of the structure of the temperature measuring mechanism and its related parts proposed by the present invention;

[0049] Figure 14 The present invention proposes Figure 13 Schematic diagram of the structure viewed from above;

[0050] Figure 15 The present invention provides a structural diagram of a resistor and two pins.

[0051] In the figure: 1. Test box; 11. Controller; 12. Box cover; 13. Transparent glass; 14. Heat dissipation holes; 15. Lock; 16. Foot; 17. Ventilation holes; 18. Fan; 19. Dust screen; 2. Support platform; 21. Rectangular table; 22. Blocking plate; 23. Handle; 25. Positioning slot; 26. Positioning rod; 27. Magnet block; 28. Jack; 29. T-block; 210. T-slot; 211. Inclined slide; 3. Conductive structure; 31. First insulating plate; 32. Conductive block; 33. Second insulating plate; 34. 4. Bridge conductor; 35. Wire; 4. Resistor test bench; 41. Test board; 42. Notch; 43. Arc-shaped notch; 44. Guide rod; 45. Slide; 46. Conductive plate; 461. Arc-shaped surface; 47. Spring; 5. Temperature measuring mechanism; 51. Test mounting plate; 52. Fixing rod; 53. Pressure spring; 54. Limiting piece; 55. Vertical plate; 56. Round rod; 561. Ball; 57. Vertical block; 58. Sensor fixing block; 59. Slot; 6. Temperature sensor; 7. Resistor; 71. Pin. DETAILED DESCRIPTION

[0052] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all the embodiments.

[0053] Example 1

[0054] Reference Figures 1-15 , a resistor performance testing device, comprising:

[0055] The test box 1 is provided with four footings 16 at the bottom. The left side of the test box 1 is an open structure and a box cover 12 is installed by rotating a hinge. An air vent 17 is provided on the right side of the test box 1. A fan 18 is provided inside the air vent 17. A controller 11 is provided on the front of the box cover 12. The controller 11 has its own display screen and is used to control electrical appliances through the controller 11. Transparent glass 13 is provided on the box cover 12. A plurality of heat dissipation holes 14 are provided on the box cover 12. A lock 15 is provided on the box cover 12. The interior of the test box 1 can be observed through the transparent glass 13. The heat dissipation holes 14 are used for ventilation and heat dissipation. The lock 15 is used to fix the box cover 12 to the test box 1. A resistance test meter is connected to the controller 11, and the resistance test meter is used to test the resistance value of the resistor 7.

[0056] The support platform 2 and the front of the test box 1 are provided with a socket 28, and the support platform 2 cooperates with the socket 28;

[0057] The conductive structure 3 is provided on the inner side of the supporting platform 2 and is used to connect to the power supply;

[0058] The resistor test bench 4 is arranged on the top of the support platform 2. The resistor test bench 4 is used to fix the resistor 7. Both ends of the resistor 7 are provided with pins 71. Both pins 71 are matched with the resistor test bench 4.

[0059] The temperature measuring mechanism 5 is installed on the top inner wall of the test box 1 and cooperates with the supporting platform 2 to measure the surface temperature of the resistor 7.

[0060] Reference Figure 5-Figure 7 In this embodiment, the support platform 2 includes a rectangular platform 21, two T-slots 210 are provided at the bottom of the rectangular platform 21, and two T-blocks 29 are provided on the inner wall of the bottom of the socket 28. The T-blocks 29 are slidably connected with the T-slots 210. A blocking plate 22 is provided on the outer side of the rectangular platform 21, a handle 23 is provided on the outer side of the blocking plate 22, and two positioning grooves 25 are provided on the inner side of the blocking plate 22. The front side of the test box 1 is located on the outer side of the socket 28 and two positioning rods 26 are symmetrically installed. The two positioning rods 26 are attracted by magnet blocks 27, and the two magnet blocks 27 are embedded in the inner walls of the two positioning grooves 25.

[0061] Specifically, the cooperation between the T-block 29 and the T-slot 210 can ensure the horizontal sliding connection of the support platform 2. Since the front end of the T-slot 210 is in a blocked state, the support platform 2 will not be separated from the T-block 29. By inserting the positioning rod 26 into the positioning groove 25, the blocking plate 22 can be positioned on the outside of the socket 28. The attraction between the magnet block 27 and the positioning rod 26 improves the stability of the blocking plate 22 and prevents the blocking plate 22 from being displaced.

[0062] Reference Figure 4 、 Figure 5 、 Figure 7 In this embodiment, the conductive structure 3 includes a first insulating plate 31, which is fixedly mounted on the front end of the rectangular platform 21. Two conductive blocks 32 are fixedly mounted on the outer side of the first insulating plate 31. Both conductive blocks 32 are connected to a wire 35. A second insulating plate 33 is provided on the inner wall of the test box 1. A bridge conductor 34 is provided on the second insulating plate 33. Both conductive blocks 32 cooperate with the bridge conductor 34.

[0063] Specifically, by connecting the bridge conductor 34 to the two conductive blocks 32 , the two conductive blocks 32 can form an electrical loop.

[0064] Reference Figures 8-12 In this embodiment, the resistor test bench 4 includes a test board 41, which is fixedly mounted on the top of the rectangular platform 21. Two notch grooves 42 are symmetrically provided on the top of the test board 41. The same arc-shaped notch 43 is provided between the two notch grooves 42. The arc-shaped notch 43 is used to place the resistor 7. Two conductive plates 46 are symmetrically slidably installed in the notch groove 42. The top of the conductive plate 46 is provided with an arc-shaped surface 461. The wire 35 is connected to the conductive plate 46. Two slide cylinders 45 are fixedly mounted on the outer side of the conductive plate 46. Two guide rods 44 are fixedly mounted on the inner walls of both sides of the notch groove 42. The guide rods 44 are slidably connected to the inner walls of the corresponding slide cylinders 45. A spring 47 is fixedly mounted between the guide rods 44 and the slide cylinder 45.

[0065] Specifically, the resistor 7 is placed at the position of the arc-shaped notch 43, and the spring 47 provides elastic force for the slide 45 and the conductive plate 46, so that the two conductive plates 46 are close to each other, and the pin 71 on the resistor 7 is clamped and fixed by the clamping force between the two conductive plates 46, and a power-on test is performed.

[0066] Reference Figure 13-14 In this embodiment, the temperature measuring mechanism 5 includes four fixing rods 52, which are all fixedly mounted on the top inner wall of the test box 1. The same test mounting plate 51 is slidably mounted on the outer side of the four fixing rods 52. A vertical block 57 is fixedly mounted on the bottom of the test mounting plate 51. A sensor fixing block 58 is provided on the front side of the vertical block 57. A slot 59 is reserved on the sensor fixing block 58. A temperature sensor 6 is fixed in the slot 59. The temperature sensor 6 is electrically connected to the controller 11. The bottom ends of the four fixing rods 52 are all fixedly mounted with a limit plate 54. The outer sides of the four fixing rods 52 are all sleeved with a pressure spring 53. The bottom end of the pressure spring 53 is fixedly mounted with the limit plate 54, and the top end of the pressure spring 53 is fixedly mounted with the test mounting plate 51.

[0067] The surface temperature of the resistor 7 is measured by the temperature sensor 6, and the temperature measurement result is sent to the controller 11. Under normal circumstances, due to the elastic force of the pressure spring 53, the test mounting plate 51 drives the temperature sensor 6 to be located above the level of the test plate 41 through the vertical block 57 and the sensor fixing block 58.

[0068] Reference Figure 13-14 In this embodiment, two vertical plates 55 are symmetrically fixedly installed at the bottom of the test mounting plate 51, and round rods 56 are provided on the inner sides of the two vertical plates 55. Balls 561 are embedded in the inner sides of the two round rods 56. Inclined grooves 211 are provided on both sides of the support platform 2, and the two round rods 56 are slidably connected to the inner walls of the two inclined grooves 211.

[0069] By moving the support platform 2, the two inclined slide grooves 211 squeeze the two round rods 56, and the round rods 56 rely on the ball bearings 561 to reduce the friction between the inclined slide grooves 211. When the support platform 2 is pushed toward the inside of the test box 1, the inclined slide grooves 211 squeeze the round rods 56 and drive the vertical plate 55 to move downward. The two vertical plates 55 drive the test mounting plate 51 to move downward. The test mounting plate 51 drives the temperature sensor 6 to move downward through the vertical block 57 and the sensor fixing block 58 to contact the resistor 7 to measure the temperature of the resistor 7. When the rectangular platform 21 is pulled outward, the inclined slide grooves 211 relax the squeezing of the round rods 56, and the test mounting plate 51 is reset due to the elastic force of the pressure spring 53.

[0070] Working principle: when in use, the electrical appliance is connected to the controller 11 and the external power supply, and then the blocking plate 22 is pulled by the handle 23 to move, and the blocking plate 22 drives the rectangular table 21 to leave the test box 1, and the T-block 29 cooperates with the T-slot 210 to ensure that the support platform 2 is horizontally slidably connected. Since the front end of the T-slot 210 is in a blocked state, the support platform 2 will not be separated from the T-block 29. Then the resistor 7 is placed in the arc notch 43, and the two pins 71 are respectively inserted between the two conductive plates 46. The spring 47 provides elastic force for the slide 45 and the conductive plate 46, so that the two conductive plates 46 are close to each other. The pins 71 on the resistor 7 are clamped and fixed by the clamping force between the two conductive plates 46. Then the rectangular table 21 is pushed back, and the blocking plate 22 can be positioned on the outside of the socket 28 by inserting the positioning rod 26 into the positioning groove 25. The attraction between the magnet block 27 and the positioning rod 26 improves the stability of the blocking plate 22 and prevents the blocking plate 22 from displacement.

[0071] When the rectangular platform 21 is reset, the bridge conductor 34 is connected to the two conductive blocks 32, so that the two conductive blocks 32 form a power loop, so that the conductive plate 46 is energized, and current flows through the resistor 7 to perform a power-on test to test the resistance value of the resistor 7;

[0072] At the same time, the support platform 2 is moved so that the two inclined chutes 211 squeeze the two round rods 56. The round rods 56 rely on the ball bearings 561 to reduce the friction between the inclined chutes 211 and the support platform 2. When the support platform 2 is pushed toward the inside of the test box 1, the inclined chutes 211 squeeze the round rods 56, driving the vertical plate 55 to move downward. The two vertical plates 55 drive the test mounting plate 51 to move downward. The test mounting plate 51 drives the temperature sensor 6 to move downward through the vertical block 57 and the sensor fixing block 58, and contacts the resistor 7 to measure the temperature of the resistor 7. The temperature of the surface of the resistor 7 is measured by the temperature sensor 6, and the temperature measurement result is sent to the controller 11.

[0073] After the test is completed, when the support platform 2 is pulled outward, the inclined slide 211 releases the pressure on the round rod 56, and the elastic force of the pressure spring 53 causes the test mounting plate 51 to return to its original position. The test mounting plate 51 drives the temperature sensor 6 to be located above the level of the test plate 41 through the vertical block 57 and the sensor fixing block 58;

[0074] The two fans 18 are working to ventilate the interior of the test box 1. Since the test of a resistor 7 has just been completed, the temperature inside the test box 1 will be higher. By cooling, the temperature inside the test box 1 is made the same as the outside temperature to avoid affecting the test results.

[0075] Example 2

[0076] The rest of the embodiment 2 is the same as the embodiment 1, except that a dustproof net 19 is provided on the outside of the air vent 17, and the dustproof net 19 is fixed to the outside of the test box 1 by screws. The dustproof net 19 can prevent dust in the air from entering the air vent 17. This application includes all the structural shapes, sizes and materials of embodiment 1. In order to meet the specific usage conditions, they can be selected and adjusted. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0077] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A resistor performance testing device, characterized in that: include: A test box (1) is provided with four feet (16) at the bottom, the left side of the test box (1) is an open structure and a box cover (12) is installed by rotating a hinge, and the right side of the test box (1) is provided with an air vent (17), and a fan (18) is provided inside the air vent (17); A support platform (2), a socket (28) is provided on the front of the test box (1), and the support platform (2) cooperates with the socket (28); A conductive structure (3) is provided on the inner side of the supporting platform (2) and is used to connect to a power source; A resistor test bench (4) is arranged on the top of the support platform (2), and the resistor test bench (4) is used to fix the resistor (7). Both ends of the resistor (7) are provided with pins (71), and both pins (71) are matched with the resistor test bench (4); The temperature measuring mechanism (5) is installed on the top inner wall of the test box (1) and cooperates with the support platform (2) to measure the temperature of the surface of the resistor (7). The support platform (2) includes a rectangular platform (21). Two T-shaped slots (210) are provided at the bottom of the rectangular platform (21). Two T-shaped blocks (29) are provided on the bottom inner wall of the jack (28). The T-shaped blocks (29) are slidably connected with the T-shaped slots (210). A blocking plate (22) is provided on the outside of the rectangular platform (21). A handle (23) is provided on the outside of the blocking plate (22). Two positioning slots (25) are provided on the inside of the blocking plate (22). The front of the test box (1) Two positioning rods (26) are symmetrically installed on the outside of the jack (28), and the two positioning rods (26) are attracted by magnet blocks (27). The two magnet blocks (27) are embedded in the inner walls of the two positioning grooves (25). The conductive structure (3) includes a first insulating plate (31), which is fixedly installed on the front end of the rectangular platform (21). Two conductive blocks (32) are fixedly installed on the outside of the first insulating plate (31), and the two conductive blocks (32) are connected to wires (35). A second insulating plate (33) is provided on the inner wall of the test box (1), and a bridge conductor (34) is provided on the second insulating plate (33). The two conductive blocks (32) are all matched with the bridge conductor (34), the temperature measuring mechanism (5) includes four fixed rods (52), the four fixed rods (52) are all fixedly mounted on the top inner wall of the test box (1), the outer sides of the four fixed rods (52) are slidably mounted with a same test mounting plate (51), the bottom of the test mounting plate (51) is fixedly mounted with a vertical block (57), the front side of the vertical block (57) is provided with a sensor fixing block (58), a card slot (59) is reserved on the sensor fixing block (58), a temperature sensor (6) is fixed in the card slot (59), and the temperature sensor (6) is electrically connected to the controller (11), the four fixed rods (52) ) are fixedly installed with a limit plate (54) at the bottom end, and the outer sides of the four fixed rods (52) are sleeved with a pressure spring (53), the bottom end of the pressure spring (53) is fixedly installed with the limit plate (54), and the top end of the pressure spring (53) is fixedly installed with the test mounting plate (51), and the bottom of the test mounting plate (51) is symmetrically fixedly installed with two vertical plates (55), the inner sides of the two vertical plates (55) are provided with round rods (56), and the inner sides of the two round rods (56) are embedded with balls (561), and both sides of the rectangular table (21) are provided with inclined grooves (211), and the two round rods (56) are slidably connected to the inner walls of the two inclined grooves (211).

2. A resistor performance testing device according to claim 1, characterized in that: The box cover (12) is provided with transparent glass (13), the box cover (12) is provided with a plurality of heat dissipation holes (14), and the box cover (12) is provided with a lock buckle (15).

3. The resistor performance testing device according to claim 1, characterized in that: A controller (11) is provided on the front of the box cover (12), and the controller (11) has a display screen.

4. The resistor performance testing device according to claim 1, characterized in that: The resistor test bench (4) comprises a test board (41), the test board (41) being fixedly mounted on the top of the rectangular platform (21), the top of the test board (41) being symmetrically provided with two notched grooves (42), a common arc-shaped notch (43) being provided between the two notched grooves (42), and the arc-shaped notch (43) being used for placing the resistor (7).

5. A resistor performance testing device according to claim 4, characterized in that: Two conductive plates (46) are symmetrically slidably installed in the notch groove (42), and an arc surface (461) is provided on the top of the conductive plate (46). The wire (35) is connected to the conductive plate (46), and two slide cylinders (45) are fixedly installed on the outer side of the conductive plate (46). Two guide rods (44) are fixedly installed on the inner walls of both sides of the notch groove (42), and the guide rods (44) are slidably connected to the inner walls of the corresponding slide cylinders (45). A spring (47) is fixedly installed between the guide rods (44) and the slide cylinder (45).

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