Resistor performance testing device

Abstract

The invention belongs to the technical field of resistor performance testing, particularly relates to a resistor performance testing device, and aims to solve the problems that an existing testing device is tedious to operate and use, multiple tests are independent tests, the working efficiency is low, and a resistor cannot be rapidly tested and used. The left side of the test box is of an opening structure and is rotatably provided with a box cover through a hinge, and the right side of the test box is provided with an air hole. According to the invention, the current-conducting plate fixes the resistor in a clamping manner and can adapt to fixed use of the resistors of different types and sizes, when the supporting platform is pushed towards the inner side of the test box, the current-conducting structure is firstly electrified to enable the resistor to form a loop, and a resistance test can be carried out; secondly, the temperature measuring sensor moves downwards to be in contact with the resistor to measure the temperature of the resistor, and the temperature of the surface of the resistor is measured through the temperature measuring sensor.

Description

Technical Field

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

[0002] Resistors are generally called resistors in daily life. It is a current limiting component. After connecting the resistor to the circuit, the resistance of the resistor is fixed, usually with two pins, which can limit the current through the branch connected to it. The resistor whose resistance cannot be changed is called a fixed resistor. The resistor whose resistance is variable is called a potentiometer or a variable resistor. The ideal resistor is linear, that is, the instantaneous current passing through the resistor is proportional to the applied instantaneous voltage. There are many types of resistors, and the wire-wound resistor is one of them. The wire-wound resistor is made of constantan wire, nickel-chromium wire or manganese copper wire wound on a porcelain tube or an insulating skeleton. It has a large volume, but a low resistance, low noise, stable and reliable, and high temperature resistance. It is widely used in high-power circuits, but its small resistance performance cannot be directly seen, especially under high temperature conditions, and its resistance is not easy to test directly. Moreover, after the production of the resistor is completed, quality inspection is required. During the inspection process, parameters such as the resistance value and heat generation of the energized resistor need to be tested.

[0003] The existing testing device is complicated to operate and use, and multiple tests are performed separately, which has low working efficiency and cannot test resistors quickly. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing testing device, 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 resistor performance testing device, 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 hole, and a fan is arranged inside the air hole;

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

[0009] A conductive structure, arranged on the inner side of the supporting platform, for connecting to a power source;

[0010] A resistor test bench is arranged on the top of the supporting platform, and the resistor test bench is used to fix the resistor, and pins are arranged at both ends of the resistor, 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, the box cover is provided with a plurality of heat dissipation holes, and the box cover is provided with a lock.

[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, and the lock 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 display screen.

[0015] Used to control electrical appliances through controllers.

[0016] Furthermore, the support platform includes a rectangular platform, the bottom of the rectangular platform is provided with two T-slots, and the bottom inner wall of the socket is provided with two T-blocks, 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 outer side of the rectangular table, a handle is provided on the outer side of the blocking plate, two positioning grooves are provided on the inner side of the blocking plate, and two positioning rods are symmetrically installed on the front side of the test box located on the outer side of the socket, and magnet blocks are attracted on the two positioning rods, 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, and the attraction between the magnet block and the positioning rod improves the stability of the blocking plate and avoids displacement of the blocking plate.

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

[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, and the arc-shaped notch is used to place the resistor.

[0023] Furthermore, two conductive plates are symmetrically and slidably installed in the notch groove, the top of the conductive plate is provided with an arc surface, 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 rod and the slide cylinder.

[0024] The spring provides elastic force to the slide cylinder and the conductive plate, so that the two conductive plates are close to each other, and 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 fixing rods, and the four fixing rods are all 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 fixing rods, and a vertical block is fixedly installed on the bottom of the test mounting plate. A sensor fixing block is arranged on the front side of the vertical block, and a card slot is reserved on the sensor fixing block. A temperature measuring sensor is fixed in the card slot, and the temperature measuring sensor is electrically connected to the controller. A limiting plate is fixedly installed on the bottom ends of the four fixing rods, and a pressure spring is sleeved on the outer sides of the four fixing rods. The bottom end of the pressure spring is fixedly installed on the limiting plate, and the top end of the pressure spring is fixedly installed on the test mounting plate.

[0026] The temperature of the resistor surface 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 at the bottom of the test mounting plate, 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, inclined grooves are opened on both sides of the support platform, and 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 measuring sensor to move 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 to leave 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 tube 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 then the rectangular platform is pushed back. The blocking plate can be positioned outside the jack 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 set to fix the resistor by clamping, which can adapt to the fixed use of resistors of different types and sizes.

[0031] In this scheme, when the rectangular stage is reset, the bridge conductor is connected to the two conductive blocks, so that the two conductive blocks can form a power-on loop, so that the conductive plate is powered, 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 slides squeeze the two round rods. The round rods rely on the ball bearings to reduce the friction between the inclined slides and the round rods. When the support 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. The two vertical plates drive the test installation plate to move downward. The test installation plate drives the temperature sensor to move downward through the vertical block and the sensor fixing block 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, and the temperature measurement result is sent to the controller.

[0033] In this solution, when the support platform is pulled outward, the inclined slide groove relaxes the squeezing of the round rod, and the test installation plate is reset through the elastic force of the pressure spring. The test installation 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 work 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 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 supporting platform is pushed toward the inside of the test box, first, the conductive structure is energized to form a circuit of the resistor, so that a resistance test can be performed. Then, 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 diagram of the structure of a resistor performance testing device proposed by the present invention;

[0037] Figure 2 The present invention proposes Figure 1 A right view structural diagram of ;

[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 The schematic diagram of the structure of the box cover being disassembled;

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

[0041] Figure 6 The present invention proposes Figure 5 A right view structural diagram of ;

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

[0043] Figure 8 A schematic diagram of the structure of the resistor test bench and its related parts proposed by the present invention;

[0044] Fig. 9 The present invention proposes Figure 8 A schematic cross-sectional structure diagram of ;

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

[0046] Fig.11 It is a schematic cross-sectional structure diagram of the slide tube and the spring proposed in the present invention;

[0047] Fig.12 It is a structural schematic diagram of the slide barrel proposed by the present invention;

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

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

[0050] Fig.15 The present invention provides a schematic 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 hole; 15. lock; 16. foot; 17. ventilation hole; 18. fan; 19. dust screen; 2. support platform; 21. rectangular table; 22. blocking plate; 23. handle; 25. positioning groove; 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; 3 4. Bridge conductor; 35. Wire; 4. Resistor test bench; 41. Test board; 42. Notch groove; 43. Arc notch; 44. Guide rod; 45. Slide; 46. Conductive plate; 461. Arc 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 of the embodiments.

[0053] Embodiment 1

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

[0055] The test box 1 has 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 through hinges. 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 a display screen and is used to control electrical appliances. A 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 matches with the socket 28;

[0057] The conductive structure 3 is arranged 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 temperature of the surface 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, two T-blocks 29 are provided on the bottom inner wall 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 avoids displacement of the blocking plate 22.

[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 with wires 35. A second insulating plate 33 is arranged on the inner wall of the test box 1. A bridge conductor 34 is arranged 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 circuit.

[0064] Reference Figure 8-Figure 12 In this embodiment, the resistor test bench 4 includes a test board 41, which is fixedly mounted on the top of the rectangular table 21. Two notch grooves 42 are symmetrically provided on the top of the test board 41. The same arc notch 43 is provided between the two notch grooves 42. The arc notch 43 is used to place the resistor 7. Two conductive plates 46 are symmetrically and slidably installed in the notch groove 42. The top of the conductive plate 46 is provided with an arc surface 461. The wire 35 is connected to the conductive plate 46. 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 on 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 installed 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 fixed rods 52, and the four fixed rods 52 are fixedly installed on the top inner wall of the test box 1. The same test mounting plate 51 is slidably installed on the outer side of the four fixed rods 52. A vertical block 57 is fixedly installed at the bottom of the test mounting plate 51. A sensor fixing block 58 is arranged on the front side of the vertical block 57. A card slot 59 is reserved on the sensor fixing block 58. A temperature measuring sensor 6 is fixedly connected and connected in the card slot 59. The temperature measuring sensor 6 is electrically connected to the controller 11. The bottom ends of the four fixed rods 52 are fixedly installed with a limit plate 54. 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.

[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. Through the elastic force of the pressure spring 53, under normal circumstances, 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 grooves 211 squeeze the two round rods 56, and the round rod 56 relies on the ball 561 to reduce the friction between the inclined groove 211. When the support platform 2 is pushed toward the inside of the test box 1, the inclined groove 211 squeezes the round rod 56 to drive the vertical plate 55 to move downward, and the two vertical plates 55 drive the test installation plate 51 to move downward. The test installation 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 groove 211 relaxes the squeezing of the round rod 56, and the test installation plate 51 is reset through the elastic force of the pressure spring 53.

[0070] Working principle: when in use, connect the electrical appliance to the controller 11 and the external power supply, then pull the blocking plate 22 to move through the handle 23, and the blocking plate 22 drives the rectangular platform 21 to leave the test box 1. The T-block 29 cooperates with the T-slot 210 to 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. Then the resistor 7 is placed in the arc-shaped 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, and then the rectangular platform 21 is pushed back. The blocking plate 22 can be positioned on the outside of the jack 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 avoids displacement of the blocking plate 22.

[0071] When the rectangular stage 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-on loop, so that the conductive plate 46 is powered, and the current flows through the resistor 7 for power-on test to test the resistance value of the resistor 7;

[0072] At the same time, the two inclined slide grooves 211 are squeezed by the support platform 2, and the round rods 56 are reduced by the ball bearings 561 with the inclined slide grooves 211. When the support platform 2 is pushed toward the inner side of the test box 1, the inclined slide grooves 211 squeeze the round rods 56 to drive the vertical plate 55 to move downward, and the two vertical plates 55 drive the test installation plate 51 to move downward. The test installation 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. 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 groove 211 releases the squeezing of the round rod 56, and the test mounting plate 51 is reset through 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;

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

[0075] Embodiment 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 the embodiment 1, and they can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0077] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme 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 hinge rotation, 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 front surface of the test box (1) is provided with a socket (28), and the support platform (2) matches the socket (28); A conductive structure (3) is arranged 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), 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 of the two 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).

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

4. A resistor performance testing device according to claim 1, characterized in that: The support platform (2) comprises a rectangular platform (21), the bottom of the rectangular platform (21) is provided with two T-shaped slots (210), the bottom inner wall of the insertion hole (28) is provided with two T-shaped blocks (29), and the T-shaped blocks (29) are slidably connected with the T-shaped slots (210).

5. A resistor performance testing device according to claim 4, characterized in that: A blocking plate (22) is arranged on the outside of the rectangular platform (21), a handle (23) is arranged on the outside of the blocking plate (22), two positioning grooves (25) are arranged on the inside of the blocking plate (22), and two positioning rods (26) are symmetrically installed on the front side of the test box (1) outside the insertion hole (28), and magnet blocks (27) are attracted on the two positioning rods (26), and the two magnet blocks (27) are embedded in the inner walls of the two positioning grooves (25).

6. A resistor performance testing device according to claim 4, characterized in that: The conductive structure (3) comprises a first insulating plate (31), the first insulating plate (31) being fixedly mounted on the front end of the rectangular platform (21), two conductive blocks (32) being fixedly mounted on the outer side of the first insulating plate (31), both conductive blocks (32) being connected to conductive wires (35), a second insulating plate (33) being arranged on the inner wall of the test box (1), a bridge conductor (34) being arranged on the second insulating plate (33), and both conductive blocks (32) being matched with the bridge conductor (34).

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

8. A resistor performance testing device according to claim 7, characterized in that: Two conductive plates (46) are symmetrically slidably installed in the notch groove (42), and the top of the conductive plate (46) is provided with an arc surface (461). 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).

9. A resistor performance testing device according to claim 1, characterized in that: The temperature measuring mechanism (5) comprises four fixing rods (52), the four fixing rods (52) are fixedly mounted on the top inner wall of the test box (1), the outer sides of the four fixing 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 measuring sensor (6) is fixedly mounted in the card slot (59), and the temperature measuring sensor (6) is electrically connected to the controller (11), the bottom ends of the four fixing rods (52) are fixedly mounted with a limit plate (54), the outer sides of the four fixing rods (52) are 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).

10. A resistor performance testing device according to claim 9, characterized in that: Two vertical plates (55) are symmetrically fixedly installed at the bottom of the test installation plate (51), and round rods (56) are arranged on the inner sides of the two vertical plates (55), and balls (561) are embedded in the inner sides of the two round rods (56). Inclined sliding grooves (211) are opened on both sides of the rectangular platform (21), and the two round rods (56) are slidably connected to the inner walls of the two inclined sliding grooves (211).

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