Performance testing device for wire-wound resistor

Abstract

The invention belongs to the technical field of winding resistor testing equipment, particularly relates to a performance testing device for a winding resistor, and aims to solve the problems that when an existing testing device is used, the winding resistor needs to be mounted through two nuts and a threaded rod, the operation is tedious, the dismounting and mounting efficiency is low, a testing box is inconvenient to dismount and mount, and the testing cost is high. According to the technical scheme, the winding resistor taking and placing device comprises a base, a rotating shaft, a rotating shaft and a rotating shaft, the isolation cover is installed on the top of the base, a resistance tester is installed on one side of the isolation cover, and an installation plate is installed on the top of the isolation cover. The device is simple in structure and convenient to operate, can be used for conveniently and automatically carrying out fixed placement and wiring on the winding resistor, also can be used for isolating operation, conveniently adjusting the environment temperature and conveniently detecting the conductivity, and also can be used for uniformly distributing entering heat during detection, so that the test effect is more accurate, and the device is convenient for people to use.

Description

Technical Field

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

[0002] Resistors are generally called resistors in daily life. They are current limiting components. 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. An 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 wire-wound resistors are one of them. Wire-wound resistors are made of constantan wire, nickel-chromium wire or manganese copper wire wound on a porcelain tube or an insulating frame. They are large in size, but have low resistance, low noise, stability and reliability, and high temperature resistance. They are widely used in high-power circuits.

[0003] A performance test device for a wire-wound resistor is disclosed in a Chinese invention patent document (Announcement No.: CN213457114U), including a test box, the top of which is connected to a box cover by hinge rotation, the box cover and the test box are closed or opened by snaps, two threaded rods are arranged at intervals on the bottom surface of the inner cavity of the test box, the threaded rods match the pin holes at both ends of the wire-wound resistor, the lower ends of the threaded rods penetrate the test box to the outside, the two threaded rods are connected to an external resistance tester through wires, a plurality of heating resistance wires are arranged on the inner wall of the test box, a switch corresponding to each heating resistance wire is arranged on the outer wall of the test box, the heating resistance wire is connected to the switch and the power supply wire, and an electronic thermometer is arranged on the side wall opposite to the switch. It can quickly and conveniently test whether the resistance value of the wire-wound resistor under high temperature is within a reasonable design range.

[0004] However, when the test device is in use, the wire-wound resistor needs to be installed through two nuts and threaded rods, which is cumbersome to operate and has a slow disassembly and installation efficiency. In addition, the test box is not convenient to disassemble and assemble, and it is not convenient to take and place the wire-wound resistor. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing testing device, that is, when in use, it is necessary to install the wire-wound resistor through two nuts and a threaded rod, the operation is cumbersome, the disassembly and installation efficiency is slow, and the test box is not convenient for disassembly and assembly, and it is not convenient to take and place the wire-wound resistor. A performance testing device for a wire-wound resistor is proposed to solve the shortcomings of the existing testing device, that is, when in use, it is necessary to install the wire-wound resistor through two nuts and a threaded rod, the operation is cumbersome, the disassembly and installation efficiency is slow, and the test box is not convenient for disassembly and assembly, and it is not convenient to take and place the wire-wound resistor.

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

[0007] A performance testing device for a wirewound resistor, comprising:

[0008] Base;

[0009] An isolation cover is installed on the top of the base, a resistance tester is installed on one side of the isolation cover, a mounting plate is installed on the top of the isolation cover, and a display screen is provided on the mounting plate;

[0010] A wire-wound resistor body is mounted on the top of the base and is located in the isolation cover, and two wiring boards are mounted on one side of the wire-wound resistor body;

[0011] A temperature sensor is installed on an inner wall of one side of the isolation cover, and the temperature sensor is connected to the display screen;

[0012] A clamping assembly is installed on the top of the base and cooperates with the isolation cover. A first motor is installed on one side of the base, and the first motor is transmission-connected to the clamping assembly.

[0013] A clamping assembly is installed on the top of the base, cooperates with the wirewound resistor body, and is transmission-connected with the clamping assembly;

[0014] A heating assembly is installed on both sides of the isolation cover, air guide boxes are fixedly installed on the inner walls of both sides of the isolation cover, the heating assembly is located in the air guide boxes, a second motor is fixedly installed on the top inner wall of the isolation cover, a rotating rod is fixedly installed on the output shaft of the second motor, and the rotating rod is drivingly connected to the two heating assemblies;

[0015] The swing assembly is installed on the rotating rod, and the same exhaust pipe is rotatably connected between the two air guide boxes. The swing assembly is transmission-connected to the exhaust pipe, and a plurality of exhaust holes are opened at the bottom of the exhaust pipe.

[0016] Furthermore, the clamping assembly includes two clamps, which are slidably mounted on the top of the base, wedge plates are fixedly mounted on both sides of the isolation cover, and recesses are provided on both sides of the bottom of the clamps, which cooperate with the wedge plates.

[0017] Furthermore, the card-mounted assembly includes four wedge-shaped card plates, and the top of the base is slidably connected to two symmetrically arranged push plates, the four wedge-shaped card plates are fixedly connected to the corresponding two push plates, and the wedge-shaped card plates cooperate with both sides of the wound resistor body, and a positioning plate is fixedly installed on one side of the two push plates away from each other, and a metal spring is installed at the bottom of the positioning plate, and the metal spring cooperates with the corresponding terminal plate.

[0018] Furthermore, the top of the base is provided with two symmetrically arranged moving grooves and two symmetrically arranged sliding grooves, the two moving grooves and the two sliding grooves are rotatably connected with the same driving rod, the driving rod is provided with four symmetrically arranged threads, and a moving block is slidably connected to the inner wall of the moving groove, and a sliding block is slidably connected to the inner wall of the sliding groove, the two moving blocks and the two sliding blocks are all threadedly connected to the driving rod, the driving rod is fixedly connected to the output shaft of the first motor, and the sliding block is fixedly connected to the corresponding clamping plate.

[0019] Furthermore, a fixed block is fixedly installed on the top of the moving block, a sliding rod is slidably connected to the fixed block, the sliding rod is slidably connected to the corresponding push plate, and a top spring is fixedly installed on one side of the fixed block, one end of the top spring is fixedly connected to the corresponding push plate, and a baffle is fixedly installed on the other end of the sliding rod.

[0020] Furthermore, the heating component includes an electric heating ring, three fixing rods are fixedly installed on the inner wall of the air guide box, and the electric heating ring is fixedly connected to the three fixing rods.

[0021] Furthermore, a mounting rod is fixedly installed on the inner wall of the air guide box, and the two mounting rods are rotatably connected to the same rotating shaft. Fan blades are fixedly installed at one end of the two rotating shafts away from each other, and the fan blades cooperate with the corresponding electric heating rings.

[0022] Furthermore, a first bevel gear is fixedly mounted on the bottom end of the rotating rod, a second bevel gear is fixedly mounted on the rotating shaft, the first bevel gear and the second bevel gear are meshed with each other, a positioning box is rotatably connected to the rotating rod, and the positioning box is rotatably connected to the rotating shaft.

[0023] Furthermore, the swing assembly includes a roller, which is fixedly mounted on a rotating rod, a positioning seat is fixedly mounted on one side of the positioning box, a moving rod is slidably connected to the positioning seat, two clamping rods are fixedly mounted on one side of the moving rod, and a circular inclined plate is fixedly mounted on the roller, and the two clamping rods are located on the upper and lower sides of the circular inclined plate.

[0024] Furthermore, a rack is fixedly mounted on the moving rod, and a positioning gear is fixedly mounted on the exhaust pipe, and the positioning gear and the rack are meshed with each other.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] (1) In this solution, since a threaded connection is provided between the driving rod and the two sliders, and the notches on the clamping plate cooperate with the corresponding wedge-shaped plates, the rotating driving rod can drive the clamping plate to install and fix the isolation cover;

[0027] (2) In this solution, due to the threaded connection between the driving rod and the two moving blocks and the top spring on the fixed block, the rotating driving rod can drive the push plate to move, and then the two sides of the wound resistor body are clamped and positioned through the wedge-shaped clamping plate, and at the same time, the metal spring can be driven to contact the corresponding terminal board;

[0028] (3) In this solution, due to the mutual meshing of the first bevel gear and the second bevel gear and the provision of the electric heating ring, the rotating rod can introduce the heat generated by the electric heating ring, thereby changing the temperature environment of the wire wound resistor body, thereby facilitating the detection of its conductive properties at different temperatures;

[0029] (4) In this solution, the circular inclined plate and the two clamping rods cooperate with each other, and the rack and the positioning gear mesh with each other, so that the rotating rod can drive the exhaust pipe to change its angle back and forth, preventing the gas temperature from acting at the same place and affecting the test effect of the wound resistor body.

[0030] The invention has a simple structure and is easy to operate. It can automatically fix and place and connect the wire-wound resistors. It can also perform isolation operations and conveniently adjust the temperature of the environment to detect the conductive performance. It can also evenly distribute the incoming heat during the detection, so that the test effect is more accurate and convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of a performance testing device for a wirewound resistor proposed by the present invention;

[0032] Figure 2 A rear structural schematic diagram of a performance testing device for a wirewound resistor proposed by the present invention;

[0033] Figure 3 A schematic diagram of the internal structure of an isolation cover of a performance testing device for a wire-wound resistor proposed by the present invention;

[0034] Figure 4 A schematic diagram of the structure of an isolation cover of a performance testing device for a wire-wound resistor proposed by the present invention when viewed from above;

[0035] Figure 5 A schematic diagram of a top view of the base structure of a performance testing device for a wire-wound resistor proposed by the present invention;

[0036] Figure 6 A schematic diagram of the transmission connection structure of the second motor, the exhaust pipe and the fan blades of a performance test device for a wire-wound resistor proposed by the present invention;

[0037] Figure 7A schematic diagram of the transmission connection structure of a second motor, an exhaust pipe and a rotating shaft of a performance test device for a wire-wound resistor proposed by the present invention;

[0038] Figure 8 A schematic diagram of a transmission connection structure of a rotating rod and a rotating shaft of a performance testing device for a wire-wound resistor proposed by the present invention;

[0039] Fig. 9 A schematic diagram of the exhaust duct structure of a performance test device for a wire-wound resistor proposed by the present invention;

[0040] Fig.10 A schematic diagram of the structure of a heating component of a performance testing device for a wire-wound resistor proposed by the present invention;

[0041] Fig.11 A schematic diagram of the structure of a wire-wound resistor body of a performance testing device for a wire-wound resistor proposed by the present invention;

[0042] Fig.12 A schematic diagram of a clamping plate structure of a performance testing device for a wire-wound resistor proposed by the present invention;

[0043] Fig.13 A schematic diagram of a metal spring structure of a performance testing device for a wire-wound resistor proposed by the present invention;

[0044] Fig.14 A schematic diagram of the structure of part A of a performance testing device for a wire-wound resistor proposed by the present invention;

[0045] Fig.15 This is a schematic structural diagram of part B of a performance testing device for a wirewound resistor proposed in the present invention.

[0046] In the figure: 1, base; 2, winding resistor body; 3, terminal block; 4, isolation cover; 5, resistance tester; 6, mounting plate; 7, display screen; 8, clamping plate; 9, wedge plate; 10, notch; 11, push plate; 12, wedge card plate; 13, positioning plate; 14, metal spring; 15, moving groove; 16, sliding groove; 17, driving rod; 18, first motor; 19, moving block; 20, slider; 21, fixed block; 22, slide rod; 23, baffle; 24, top Spring; 25, air guide box; 26, mounting rod; 27, rotating shaft; 28, fan blades; 29, exhaust pipe; 30, exhaust hole; 31, fixing rod; 32, electric heating ring; 33, second motor; 34, rotating rod; 35, positioning box; 36, first bevel gear; 37, second bevel gear; 38, positioning seat; 39, moving rod; 40, rack; 41, positioning gear; 42, rotating roller; 43, circular inclined plate; 44, clamping rod; 45, temperature sensor; 46, dustproof net. DETAILED DESCRIPTION

[0047] 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.

[0048] Embodiment 1

[0049] Reference Figure 1-Figure 15 , a performance testing device for a wirewound resistor, comprising:

[0050] Base 1;

[0051] An isolation cover 4 is installed on the top of the base 1, a resistance tester 5 is installed on one side of the isolation cover 4, a mounting plate 6 is installed on the top of the isolation cover 4, and a display screen 7 is provided on the mounting plate 6;

[0052] The wire-wound resistor body 2 is mounted on the top of the base 1 and is located in the isolation cover 4. Two terminal blocks 3 are mounted on one side of the wire-wound resistor body 2.

[0053] A temperature sensor 45 is installed on an inner wall of one side of the isolation cover 4, and the temperature sensor 45 is connected to the display screen 7;

[0054] The clamping assembly is installed on the top of the base 1 and cooperates with the isolation cover 4. A first motor 18 is installed on one side of the base 1, and the first motor 18 is transmission-connected to the clamping assembly;

[0055] The clamping assembly is installed on the top of the base 1 and cooperates with the wire wound resistor body 2 and is transmission-connected with the clamping assembly;

[0056] The heating components are installed on both sides of the isolation cover 4. The inner walls of both sides of the isolation cover 4 are fixedly installed with air guide boxes 25. The heating components are located in the air guide boxes 25. The second motor 33 is fixedly installed on the top inner wall of the isolation cover 4. The output shaft of the second motor 33 is fixedly installed with a rotating rod 34. The rotating rod 34 is drivingly connected to the two heating components.

[0057] The swing assembly is mounted on the rotating rod 34 , and the two air guide boxes 25 are rotatably connected with the same exhaust pipe 29 . The swing assembly is transmission-connected to the exhaust pipe 29 , and a plurality of exhaust holes 30 are provided at the bottom of the exhaust pipe 29 .

[0058] In this embodiment, the clamping assembly includes two clamping plates 8, which are slidably installed on the top of the base 1. Wedge plates 9 are fixedly installed on both sides of the isolation cover 4. Notches 10 are provided on both sides of the bottom of the clamping plates 8. The notches 10 and the wedge plates 9 cooperate with each other. The two clamping plates 8 close to each other can squeeze and press the wedge plates 9 through the cooperation between the notches 10 and the wedge plates 9, so that the isolation cover 4 can be automatically fixed and installed.

[0059] In this embodiment, the card assembly includes four wedge-shaped card plates 12, and the top of the base 1 is slidably connected to two symmetrically arranged push plates 11, and the four wedge-shaped card plates 12 are fixedly connected to the corresponding two push plates 11, and the wedge-shaped card plates 12 cooperate with the two sides of the wound resistor body 2, and the two push plates 11 are fixedly installed with a positioning plate 13 on the side away from each other, and a metal spring 14 is installed at the bottom of the positioning plate 13, and the metal spring 14 cooperates with the corresponding wiring board 3, and a fixed block 21 is fixedly installed on the top of the moving block 19, and a sliding rod 22 is slidably connected to the fixed block 21, and the sliding rod 22 is slidably connected to the corresponding push plate 11, and a top spring 24 is fixedly installed on one side of the fixed block 21, and one end of the top spring 24 is connected to the corresponding push plate 1 1 is fixedly connected, and a baffle 23 is fixedly installed on the other end of the slide bar 22. The two push plates 11 that are far away from each other drive the wedge-shaped card plate 12 to move. The wedge-shaped card plate 12 cooperates with each other through the side plates of the wound resistor body 2, so that the wound resistor body 2 can be clamped and fixed. At the same time, the moving push plate 11 drives the metal spring 14 to move, so that the metal spring 14 contacts with the wiring board 3, and then the wiring test can be automatically performed. At the same time, the slide bar 22 is slidably connected to the push plate 11, and the top spring 24 acts on the push plate 11, so that the wedge-shaped card plate 12 has a telescopic buffer margin when clamping the wound resistor body 2 of different sizes and lengths, so that it can adapt to the installation and placement of a large number of wound resistor bodies 2 of different sizes.

[0060] In this embodiment, two symmetrically arranged moving grooves 15 and two symmetrically arranged sliding grooves 16 are provided on the top of the base 1, and the same driving rod 17 is rotatably connected between the two moving grooves 15 and the two sliding grooves 16. The driving rod 17 is provided with four symmetrically arranged threads, and a moving block 19 is slidably connected to the inner wall of the moving groove 15, and a sliding block 20 is slidably connected to the inner wall of the sliding groove 16. The two moving blocks 19 and the two sliding blocks 20 are both threadedly connected to the driving rod 17, and the driving rod 17 is fixedly connected to the output shaft of the first motor 18, and the sliding block 20 is fixedly connected to the corresponding splint 8. The symmetrical arrangement of the four threads on the driving rod 17 enables the rotating driving rod 17 to respectively drive the two sliding blocks 20 to move in opposite directions, and the two moving blocks 19 move in opposite directions, and are limited by the moving groove 15 and the sliding groove 16.

[0061] In this embodiment, the heating component includes an electric heating ring 32, three fixing rods 31 are fixedly installed on the inner wall of the air guide box 25, the electric heating ring 32 is fixedly connected to the three fixing rods 31, and a mounting rod 26 is fixedly installed on the inner wall of the air guide box 25. The two mounting rods 26 are rotatably connected with the same rotating shaft 27, and the two rotating shafts 27 are fixedly installed with fan blades 28 at one end away from each other. The fan blades 28 cooperate with the corresponding electric heating ring 32. The electric heating ring 32 generates heat when powered on, so that the wind force generated by the fan blades 28 during rotation acts on the electric heating ring 32, and is finally introduced into the isolation cover 4 for space heating.

[0062] In this embodiment, a first bevel gear 36 is fixedly installed on the bottom end of the rotating rod 34, and a second bevel gear 37 is fixedly installed on the rotating shaft 27. The first bevel gear 36 and the second bevel gear 37 are meshed with each other. A positioning box 35 is rotatably connected to the rotating rod 34, and the positioning box 35 is rotatably connected to the rotating shaft 27. The rotating rotating rod 34 can drive the rotating shaft 27 to rotate through the mutual meshing of the first bevel gear 36 and the second bevel gear 37, thereby driving the two fan blades 28 to rotate to blow air.

[0063] In this embodiment, the swing assembly includes a roller 42, which is fixedly mounted on the rotating rod 34. A positioning seat 38 is fixedly mounted on one side of the positioning box 35. A moving rod 39 is slidably connected to the positioning seat 38. Two clamping rods 44 are fixedly mounted on one side of the moving rod 39. A circular inclined plate 43 is fixedly mounted on the roller 42. The two clamping rods 44 are located on the upper and lower sides of the circular inclined plate 43. The two clamping rods 44 are located on the upper and lower sides of the circular inclined plate 43, so that the upper and lower drop generated by the circular inclined plate 43 during rotation can act on the clamping rod 44, thereby driving the moving rod 39 to move up and down.

[0064] In this embodiment, a rack 40 is fixedly installed on the moving rod 39, and a positioning gear 41 is fixedly installed on the exhaust pipe 29. The positioning gear 41 and the rack 40 are meshed with each other. The moving moving rod 39 can drive the exhaust pipe 29 to change its angle back and forth through the mutual meshing of the rack 40 and the positioning gear 41, thereby being able to blow air back and forth to heat more space in the isolation cover 4, thereby increasing the uniformity of heat and preventing more heat from acting on a certain place of the wound resistor body 2, affecting the test effect.

[0065] Working principle: during operation, the wound resistor body 2 and the isolation cover 4 are placed on the base 1, and the switch of the first motor 18 is started. The output shaft of the first motor 18 drives the driving rod 17 to rotate. The symmetrical arrangement of the four threads on the driving rod 17 enables the rotating driving rod 17 to respectively drive the two sliders 20 to move in opposite directions, and the two moving blocks 19 to move in opposite directions, thereby driving the clamping plate 8 and the push plate 11 to move, and limit the position through the moving groove 15 and the sliding groove 16. The two clamping plates 8 approaching each other cooperate with the wedge plate 9 through the notch 10, so that the wedge plate 9 can be squeezed, pushed and pressed, and the wedge plate 9 can be pushed. The isolation cover 4 can be automatically fixed and installed. The two push plates 11 that are separated from each other drive the wedge-shaped card plate 12 to move. The wedge-shaped card plate 12 cooperates with each other through the side plates of the wound resistor body 2, so that the wound resistor body 2 can be clamped and fixed. At the same time, the moving push plate 11 drives the metal spring 14 to move, so that the metal spring 14 contacts the wiring board 3, and then the wiring test can be automatically performed. At the same time, the sliding rod 22 is connected to the sliding of the push plate 11, and the top spring 24 acts on the push plate 11, so that the wedge-shaped card plate 12 can be clamped for the wound resistor body 2 of different sizes and lengths. , with a telescopic buffer margin, so that it can adapt to the installation and placement of more different sizes of the wound resistor body 2, and then start the second motor 33 switch, the output shaft of the second motor 33 drives the rotating rod 34 to rotate, and the rotating rotating rod 34 can drive the rotating shaft 27 to rotate through the mutual engagement of the first bevel gear 36 and the second bevel gear 37, thereby driving the two fan blades 28 to rotate and blow air, and cooperate with the action of the electric heating ring 32, so that the isolation cover 4 can be heated. At the same time, a controller is provided in the isolation cover 4, and the setting of the controller can adjust the heat of the electric heating ring 32, so that The temperature inside the isolation cover 4 is adjusted to facilitate testing. At the same time, the rotating rod 34 drives the circular inclined plate 43 to rotate through the roller 42. The up and down drop generated by the circular inclined plate 43 during rotation can act on the clamping rod 44, thereby driving the moving rod 39 to move up and down. The moving moving rod 39 is meshed with the rack 40 and the positioning gear 41, thereby driving the exhaust pipe 29 to change its angle back and forth, and then more space in the isolation cover 4 can be blown back and forth for heating, thereby increasing the uniformity of heat and preventing more heat from acting on a certain place of the wound resistor body 2 and affecting the test effect.

[0066] Embodiment 2

[0067] The difference between this embodiment and the first embodiment is that a dustproof net 46 is installed on the inner wall of the air guide box 25. The setting of the dustproof net 46 can isolate the dust in the isolation cover 4 to prevent some floating dust and floating cotton from sticking to the wound resistor body 2 during the test and affecting the test. All structures in this application can be selected in terms of material and length according to actual usage. The accompanying drawings are all schematic structural diagrams, and the specific actual dimensions can be appropriately adjusted.

[0068] 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 performance test device for a wirewound resistor, characterized in that: include: Base (1); An isolation cover (4) is installed on the top of the base (1), a resistance tester (5) is installed on one side of the isolation cover (4), a mounting plate (6) is installed on the top of the isolation cover (4), and a display screen (7) is provided on the mounting plate (6); A wire-wound resistor body (2) is mounted on the top of the base (1) and is located in the isolation cover (4), and two wiring boards (3) are mounted on one side of the wire-wound resistor body (2); A temperature sensor (45) is installed on an inner wall of one side of the isolation cover (4), and the temperature sensor (45) is connected to the display screen (7); A clamping assembly is mounted on the top of the base (1) and cooperates with the isolation cover (4); a first motor (18) is mounted on one side of the base (1), and the first motor (18) is in transmission connection with the clamping assembly; A clamping assembly is mounted on the top of the base (1), cooperates with the wire-wound resistor body (2), and is transmission-connected with the clamping assembly; A heating assembly is mounted on both sides of the isolation cover (4), air guide boxes (25) are fixedly mounted on the inner walls of both sides of the isolation cover (4), the heating assembly is located inside the air guide boxes (25), a second motor (33) is fixedly mounted on the top inner wall of the isolation cover (4), a rotating rod (34) is fixedly mounted on the output shaft of the second motor (33), and the rotating rod (34) is drivingly connected to the two heating assemblies; A swing assembly is mounted on the rotating rod (34); a same exhaust pipe (29) is rotatably connected between the two air guide boxes (25); the swing assembly is transmission-connected to the exhaust pipe (29); and a plurality of exhaust holes (30) are provided at the bottom of the exhaust pipe (29).

2. A performance testing device for a wirewound resistor according to claim 1, characterized in that: The clamping assembly comprises two clamping plates (8), the two clamping plates (8) are slidably mounted on the top of the base (1), wedge plates (9) are fixedly mounted on both sides of the isolation cover (4), and notches (10) are provided on both sides of the bottom of the clamping plates (8), and the notches (10) cooperate with the wedge plates (9).

3. A performance testing device for a wirewound resistor according to claim 2, characterized in that: The clamping assembly comprises four wedge-shaped clamping plates (12), the top of the base (1) is slidably connected to two symmetrically arranged push plates (11), the four wedge-shaped clamping plates (12) are fixedly connected to the corresponding two push plates (11), and the wedge-shaped clamping plates (12) and the two sides of the wound resistor body (2) cooperate with each other, and a positioning plate (13) is fixedly installed on the side of the two push plates (11) away from each other, and a metal spring (14) is installed at the bottom of the positioning plate (13), and the metal spring (14) cooperates with the corresponding wiring board (3).

4. A performance testing device for a wirewound resistor according to claim 3, characterized in that: The top of the base (1) is provided with two symmetrically arranged moving grooves (15) and two symmetrically arranged sliding grooves (16); the two moving grooves (15) and the two sliding grooves (16) are rotatably connected to a same driving rod (17); the driving rod (17) is provided with four symmetrically arranged threads; a moving block (19) is slidably connected to the inner wall of the moving groove (15); a sliding block (20) is slidably connected to the inner wall of the sliding groove (16); the two moving blocks (19) and the two sliding blocks (20) are both threadedly connected to the driving rod (17); the driving rod (17) is fixedly connected to the output shaft of the first motor (18); and the sliding block (20) is fixedly connected to the corresponding clamping plate (8).

5. A performance testing device for a wirewound resistor according to claim 4, characterized in that: A fixed block (21) is fixedly installed on the top of the moving block (19), a sliding rod (22) is slidably connected to the fixed block (21), the sliding rod (22) is slidably connected to the corresponding push plate (11), and a top spring (24) is fixedly installed on one side of the fixed block (21), one end of the top spring (24) is fixedly connected to the corresponding push plate (11), and a baffle (23) is fixedly installed on the other end of the sliding rod (22).

6. A performance testing device for a wirewound resistor according to claim 5, characterized in that: The heating component comprises an electric heating ring (32), three fixing rods (31) are fixedly mounted on the inner wall of the air guide box (25), and the electric heating ring (32) is fixedly connected to the three fixing rods (31).

7. A performance testing device for a wirewound resistor according to claim 6, characterized in that: A mounting rod (26) is fixedly mounted on the inner wall of the air guide box (25); a same rotating shaft (27) is rotatably connected between the two mounting rods (26); fan blades (28) are fixedly mounted on the ends of the two rotating shafts (27) that are away from each other; the fan blades (28) cooperate with corresponding electric heating rings (32).

8. A performance testing device for a wirewound resistor according to claim 7, characterized in that: A first bevel gear (36) is fixedly mounted on the bottom end of the rotating rod (34), a second bevel gear (37) is fixedly mounted on the rotating shaft (27), the first bevel gear (36) and the second bevel gear (37) are meshed with each other, a positioning box (35) is rotatably connected to the rotating rod (34), and the positioning box (35) is rotatably connected to the rotating shaft (27).

9. A performance testing device for a wirewound resistor according to claim 8, characterized in that: The swing assembly comprises a roller (42), the roller (42) is fixedly mounted on a rotating rod (34), a positioning seat (38) is fixedly mounted on one side of a positioning box (35), a moving rod (39) is slidably connected to the positioning seat (38), two clamping rods (44) are fixedly mounted on one side of the moving rod (39), a circular inclined plate (43) is fixedly mounted on the roller (42), and the two clamping rods (44) are located at the upper and lower sides of the circular inclined plate (43).

10. A performance testing device for a wirewound resistor according to claim 9, characterized in that: A rack (40) is fixedly mounted on the moving rod (39), and a positioning gear (41) is fixedly mounted on the exhaust pipe (29), and the positioning gear (41) and the rack (40) are meshed with each other.

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