A rotary switch component cycle life test device

Abstract

The present invention relates to the field of switch testing technology, and specifically to a rotary switch component cycle life test device, comprising: a base, the four corners of the top of the base are fixedly connected to support rods, the four support rods are commonly provided with a power mechanism at one end away from the base, and the top of the base and located in the area of ​​the four support rods are provided with four switch holders in a rectangular array, each switch holder is provided with a rotary switch component of the same model, and each switch holder is electrically connected with a connecting line. Through the reflection component, convergence component, spray storage component and magnetic powder attachment component in the magnetic variable detection mechanism, it is possible to detect the current change of the rotary switch at different speeds by means of magnetic variables, and the detection by magnetic powder can sensitively capture the tiny changes inside the switch component, thereby enhancing the accuracy of switch life detection and improving the sensitivity and precision of the detection equipment.

Description

Technical Field

[0001] The invention relates to the technical field of switch testing, and in particular to a test device for the cycle life of a rotary switch component, and in particular to a test device which measures magnetic variables and uses electrical variables as a comparative reference. Background Art

[0002] The rotary switch component cycle life test device is a device designed to evaluate the durability of rotary switches in long-term use. Its key components include motor and transmission system, control system, mounting fixture and test bench, data acquisition and recording system, and environmental control system. By simulating high-frequency and long-cycle switching actions, this rotary switch component cycle life test device is a device designed to evaluate the durability of rotary switches in long-term use. Its key components include motor and transmission system, control system, mounting fixture and test bench, data acquisition and recording system, and environmental control system. By simulating high-frequency and long-cycle switching actions, this device can accurately evaluate the wear and performance changes of switches under different use conditions, providing important data support for product design improvement and quality control, such as the switch life tester disclosed in the Chinese patent publication number CN103257313B.

[0003] The existing rotary switch component cycle life test device, when testing the life of the rotary switch component, only tests the life of one switch at the same speed at the same time, and uses the same testing equipment for testing. In actual use, the rotary switch will work at different speeds, and the life of the switch component is affected by the speed change. Different speeds will lead to different wear speeds and failure modes, and a single speed test cannot reveal the degree of influence of the speed on the life and the performance under real stress conditions.

[0004] However, relying on only one device for testing will result in a lack of comparative data, making it impossible to effectively and accurately judge the life of the switch. This is because when relying on only one device for testing, it is impossible to effectively and timely know the faults in the device itself or the inaccuracy of the test data, which increases the error of the device in detecting the life of the rotary switch components. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a rotary switch component cycle life test device, which can effectively solve the problem that the prior art only performs life detection on one switch at the same speed at a time, thereby lacking comparative data and making it impossible to effectively and accurately judge the life of the switch.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a rotary switch component cycle life test device, comprising:

[0008] A base, wherein a power mechanism is arranged on the top of the base, wherein the power mechanism comprises support rods fixedly connected to the four corners of the top of the base, wherein four switch holders are arranged in a rectangular array on the top of the base and in the region of the four support rods, wherein the same type of rotary switch components are fixed in each of the switch holders, wherein the switch holders have positive and negative poles, wherein the positive pole of the switch holders is electrically connected to a power source, and the negative pole of the switch holders is electrically connected to a connecting line, and the switch holders are electrically connected to the rotary switch components;

[0009] Three magnetic variable detection mechanisms and an electric variable detector are fixedly connected on both sides of the base, the magnetic variable detection mechanism includes a shielding box fixedly connected on both sides of the base and corresponding to the position of the switch holder, the inner wall of the shielding box is sequentially provided with a reflection component and a convergence component from top to bottom, and two magnetic powder attachment components for adsorbing magnetic powder and a spray storage component for spraying magnetic powder are provided in the shielding box and below the convergence component;

[0010] Wherein, any three of the switch holders are electrically connected to the corresponding magnetic variable detection mechanisms through connecting wires, and another one of the switch holders is electrically connected to the corresponding electric variable detector through a connecting wire;

[0011] The rotary switch component in the switch holder transmits current to the convergence component, which converts the transmitted current into magnetism and further transmits the magnetism to the magnetic powder adhesion component. The current size and service life of the rotary switch component are determined according to the amount of magnetic powder adsorbed by the magnetic powder adhesion component.

[0012] Preferably, the power mechanism includes a protective box fixedly connected to the upper end of the support rod, a heat sink is fixedly connected to the top of the protective box, a lifting and rotating rod is rotatably connected to the lower end of the protective box at the corresponding position of each rotary switch component, and the lifting and rotating rod is retractable, a motor for driving each lifting and rotating rod is fixed in the protective box, and the driving speeds of the multiple motors are different, a controller is fixedly connected to one side of the protective box, and the controller is electrically connected to the magnetic variable detection mechanism, the electric variable detector, and the motor.

[0013] Preferably, the reflection assembly includes an arc-shaped cover fixedly connected to the inner wall of the shielding box, the inner wall of the arc-shaped cover is horizontally fixedly connected with a partition plate, the upper end surface of the partition plate is fixedly connected with a plurality of arc-shaped blocks in a linear array, the lower end surface of the partition plate is fixedly connected with a pair of guide plates corresponding to each arc-shaped block, the guide plates are composed of a plurality of circular plates fixed in sequence from bottom to top and with increasing diameters, and the top of the guide plates is fixedly connected with a circular cover.

[0014] Preferably, the convergence component includes a square box fixedly connected to the inner wall of the shielding box, a pair of grid-shaped conductive frames are fixedly connected to the inner wall of the square box, the conductive frames have a matrix-distributed frame, a plurality of convergence circles are fixed in the frame, a magnetic cover is fixedly provided at the upper end of the conductive frame and at the corresponding positions of the plurality of convergence circles, an electromagnet is fixedly connected to the opposite surfaces of a pair of the conductive frames, the electromagnet includes a magnetic induction coil arranged in the length direction, and a connecting wire is electrically connected to the electromagnetic induction coil, and the connecting wire is electrically connected to the negative pole of the power supply through a current limiting resistor to form a closed circuit.

[0015] Preferably, the spray storage assembly includes an outer hollow column rotatably connected to the central position of the bottom of the shielding box, the outer circumferential surface of the outer hollow column is evenly fixedly connected with a plurality of inclined nozzles, the upper end of the outer hollow column is fixedly connected with a central axis, the inner middle part of the outer hollow column is fixedly connected with an inner hollow column, the outer circumferential surface of the inner hollow column is evenly provided with a plurality of square grooves, the internal linear array of the inner hollow column is fixedly connected with an odd number of partition nets at least greater than or equal to three, every two adjacent partition nets constitute a storage area, and magnetic powder is stored in each storage area, the inner top end of the inner hollow column is fixedly connected with a magnetic powder detector, and the bottom of the shielding box is fixedly connected with a connecting block that penetrates the shielding box and is airtightly rotatably connected to the inner hollow column.

[0016] Preferably, the inner bottom of the shielding box is symmetrically fixedly connected to two weight detectors with respect to the spray storage assembly, and the magnetic powder attachment assembly includes a plurality of elastic rods fixedly connected in a rectangular array to the opposite side of the weight detector and the square box, and the elastic rods penetrate the inner bottom of the square box and contact with the convergence circle, and the rod body of each of the elastic rods is fixedly connected with a plurality of attachment balls in a linear array.

[0017] Preferably, an air compressor is fixedly connected to one side of the base, the air compressor has two output ports, each of the output ports is fixedly connected to a connecting pipe, and the connecting pipe is fixedly connected to the connecting block.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The rotary switch component cycle life test device realizes the detection of the current change of the rotary switch at different rotation speeds by means of magnetic variables through the mutual cooperation of the reflection component, the convergence component, the spray storage component and the magnetic powder adhesion component in the magnetic variable detection mechanism, so as to achieve the test purpose of detecting the life of the rotary switch, wherein the current passing through the rotary switch is transmitted to the convergence component through the connecting wire in the switch holder, and the convergence component can concentrate the transmitted current and convert it into magnetic force, and the reflection component is used to protect the magnetic force converted by the convergence component, so as to avoid the loss of magnetic force and affect the subsequent detection results, and the magnetic force converted by the convergence component will be further transmitted to the magnetic powder adhesion component, so that the magnetic powder adhesion component produces a magnetization effect, and then adsorbs the magnetic powder sprayed in the spray storage component, and finally the life change of the rotary switch is obtained by detecting the weight of the magnetic powder adhesion component, and the detection by magnetic powder can sensitively capture the tiny changes inside the switch component, so as to enhance the accuracy of the switch life detection and improve the sensitivity and precision of the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of one side of the whole of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the other side of the whole invention;

[0024] Figure 4 It is a schematic diagram of the structure inside the power mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure inside the magnetic variable detection mechanism of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the reflective assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure inside the reflective assembly of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the guide disk of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the convergence component of the present invention;

[0030] Fig.10 It is a schematic diagram of the structure inside the convergence component of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure inside the spray storage assembly of the present invention;

[0032] Fig.12 It is a schematic diagram of the structure inside the inner hollow column of the present invention.

[0033] Reference numerals:

[0034] 1. Base;

[0035] 11. Switch holder; 111. Connecting wire;

[0036] 2. Power mechanism; 21. Protection box; 22. Heat sink; 23. Motor; 24. Lifting and rotating rod; 25. Controller; 26. Support rod;

[0037] 3. Magnetic variable detection mechanism; 31. Shielding box; 32. Reflection component; 321. Arc cover; 322. Partition plate; 323. Guide plate; 324. Round cover; 325. Arc block; 33. Convergence component; 331. Square box; 332. Conducting frame; 333. Convergence circle; 334. Magnetic cover; 335. Electromagnet, 336. Magnetic induction coil; 34. Spray storage component; 341. Outer hollow column; 3411. Inclined nozzle; 342. Inner hollow column; 3421. Square groove; 343. Central axis; 344. Connecting block; 345. Magnetic particle detector; 346. Partition net; 35. Magnetic particle attachment component; 351. Elastic rod; 352. Attachment ball; 36. Weight detector; 37. Air compressor; 38. Connecting pipe;

[0038] 4. Electrical variable detector. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention will be further described below in conjunction with the embodiments.

[0041] Example: Refer to Figures 1 to 12, a rotary switch component cycle life test device, comprising:

[0042] A base 1, a power mechanism 2 is arranged on the top of the base 1, the power mechanism 2 includes support rods 26 fixedly connected to the four corners of the top of the base 1, four switch holders 11 are arranged in a rectangular array on the top of the base 1 and located in the area of ​​the four support rods 26, each switch holder 11 is fixed with a rotary switch component of the same model, the switch holder 11 has a positive and negative pole, the positive pole of the switch holder 11 is electrically connected to a power source, the negative pole of the switch holder 11 is electrically connected to a connecting line 111, and the switch holder 11 is electrically connected to the rotary switch component;

[0043] Three magnetic variable detection mechanisms 3 and an electric variable detector 4 are fixedly connected to both sides of the base 1. The magnetic variable detection mechanism 3 includes a shielding box 31 fixedly connected to both sides of the base 1 and corresponding to the position of the switch holder 11. The inner wall of the shielding box 31 is provided with a reflection component 32 and a convergence component 33 from top to bottom. Two magnetic powder attachment components 35 for adsorbing magnetic powder and a spray storage component 34 for spraying magnetic powder are provided in the shielding box 31 and below the convergence component 33.

[0044] Among them, any three switch holders 11 are electrically connected to the corresponding magnetic variable detection mechanism 3 through the connecting wire 111, and another switch holder 11 is electrically connected to the corresponding electric variable detector 4 through the connecting wire 111;

[0045] The rotary switch component in the switch holder 11 transmits current to the convergence component 33, and the convergence component 33 converts the transmitted current into magnetism, and further transmits the magnetism to the magnetic powder adhesion component 35. The current size and service life of the current flowing in the rotary switch component are determined according to the amount of magnetic powder adsorbed by the magnetic powder adhesion component 35.

[0046] The switch holder 11 can be used to fix the rotary switch component, and the switch holder 11 can also power the rotary switch component, and by setting up a magnetic variable detection mechanism 3 and an electric variable detector 4, two different methods of detecting the rotary switch component can be realized, wherein the electric variable detector 4 is used to detect the detection result of the life of the rotary switch component under normal rotation speed, and the three magnetic variable detection mechanisms 3 can detect the influence of the rotary switch component on its life under different rotation speeds. At the same time, the magnetic variable detection mechanism 3 converts the current transmitted by the rotary switch component into magnetic force, and then detects the strength of the magnetic force, thereby obtaining the size of the current transmitted by the rotary switch component, and then obtaining the influence of the rotary switch component on its life under different rotation speeds.

[0047] Reference Figures 2 to 4The power mechanism 2 includes a protective box 21 fixedly connected to the upper end of the support rod 26, a heat sink 22 fixedly connected to the top of the protective box 21, a lifting and rotating rod 24 rotatably connected to the lower end of the protective box 21 at the corresponding position of each rotary switch component, and the lifting and rotating rod 24 is retractable, and a motor 23 for driving each lifting and rotating rod 24 is fixed in the protective box 21, and the driving speeds of the multiple motors 23 are different. A controller 25 is fixedly connected to one side of the protective box 21, and the controller 25 is electrically connected to the magnetic variable detection mechanism 3, the electric variable detector 4, and the motor 23.

[0048] The controller 25 in the power mechanism 2 can be used to control the different speeds of the motor 23, so as to achieve the purpose of providing different speeds for the rotary switch component. The lifting and rotating rod 24 can achieve contact and separation with the rotary switch component through the lifting and lowering mode. When the lifting and rotating rod 24 detects the rotary switch component, the power of the motor 23 will be transmitted to the rotary switch component through the lifting and rotating rod 24, thereby driving the rotary switch component to rotate, and then providing a power source for the rotation of the rotary switch component.

[0049] Reference Figures 5 to 8 The reflecting assembly 32 includes an arc-shaped cover 321 fixedly connected to the inner wall of the shielding box 31, a partition plate 322 is horizontally fixedly connected to the inner wall of the arc-shaped cover 321, a plurality of arc-shaped blocks 325 are fixedly connected to the upper end surface of the partition plate 322 in a linear array, a pair of guide plates 323 corresponding to each arc-shaped block 325 are fixedly connected to the lower end surface of the partition plate 322, the guide plates 323 are composed of a plurality of circular plates fixed in sequence from bottom to top and with increasing diameters, and a circular cover 324 is fixedly connected to the top of the guide plates 323.

[0050] The arc cover 321 can be divided into two parts by using the partition plate 322 in the reflection component 32, and the arc block 325 and the guide plate 323 are respectively set in the partition plate 322 to achieve the collection and reflection of magnetic force. Among them, the guide plate 323 can use the circular cover 324 to complete the collection of scattered magnetic forces, and re-apply the collected magnetic force to the collection component 33, thereby reducing the magnetic loss in the collection component 33 and enhancing the error of detecting the output current in the rotary switch component.

[0051] Reference Figures 9 and 10The converging component 33 includes a square box 331 fixedly connected to the inner wall of the shielding box 31, a pair of grid-shaped conductive frames 332 are fixedly connected to the inner wall of the square box 331, the conductive frame 332 has a matrix-distributed frame, a plurality of converging circles 333 are fixed in the frame, a magnetic cover 334 is fixedly provided at the upper end of the conductive frame 332 and at the corresponding positions of the plurality of converging circles 333, an electromagnet 335 is fixedly connected to the opposite surfaces of a pair of conductive frames 332, the electromagnet 335 includes a magnetic induction coil 336 arranged in the length direction, and the connecting line 111 is electrically connected to the electromagnetic induction coil 336, and the connecting line 111 is electrically connected to the negative pole of the power supply through a current limiting resistor to form a closed circuit.

[0052] The coil and electromagnet 335 in the convergence component 33 are used to convert the output current in the rotary switch component into magnetic force, and the converted magnetic force is further transmitted to the conductive frame 332. The conductive frame 332 can converge the magnetic force and transfer it to the convergence ring 333, thereby achieving the purpose of centralized transmission of the magnetic force.

[0053] Reference Figure 11 to Figure 12 The spray storage assembly 34 includes an outer hollow column 341 rotatably connected to the central position of the bottom of the shielding box 31, the outer peripheral surface of the outer hollow column 341 is evenly fixedly connected with a plurality of inclined nozzles 3411, the upper end of the outer hollow column 341 is fixedly connected with a central axis 343, the inner middle part of the outer hollow column 341 is fixedly connected with an inner hollow column 342, the outer peripheral surface of the inner hollow column 342 is evenly provided with a plurality of square grooves 3421, the internal linear array of the inner hollow column 342 is fixedly connected with an odd number of partition nets 346 at least greater than or equal to three, every two adjacent partition nets 346 constitute a storage area, and each storage area stores magnetic powder, the inner top end of the inner hollow column 342 is fixedly connected with a magnetic powder detector 345, and the bottom of the shielding box 31 is fixedly connected with a connecting block 344 that penetrates the shielding box 31 and is airtightly rotatably connected to the inner hollow column 342.

[0054] The inner hollow column 342 can be divided into multiple storage areas by using the partition net 346 in the spray storage component 34, and magnetic powder can be stored in the storage areas. The outer hollow column 341 can use the inclined nozzle 3411 to convert the subsequent wind force into the power for the spray storage component 34 to rotate, thereby achieving the purpose of spraying the magnetic powder stored in the spray storage component 34 into the magnetic powder adhesion component 35.

[0055] Reference Figure 3 or Figure 5The inner bottom of the shielding box 31 is symmetrically fixedly connected to two weight detectors 36 with respect to the spray storage assembly 34. The magnetic powder adhesion assembly 35 includes a plurality of elastic rods 351 fixedly connected in a rectangular array to the opposite side of the weight detector 36 and the square box 331. The elastic rods 351 penetrate the inner bottom of the square box 331 and contact with the convergence circle 333. The shaft of each elastic rod 351 is fixedly connected with a plurality of adhesion balls 352 in a linear array.

[0056] An air compressor 37 is fixedly connected to one side of the base 1 . The air compressor 37 has two output ports. Each output port is fixedly connected to a connecting pipe 38 . The connecting pipe 38 is fixedly connected to the connecting block 344 .

[0057] The weight detector 36 can be used to detect the weight of the magnetic powder attached to the magnetic powder attachment component 35, so as to judge the current transmission of the rotary switch component at different rotation speeds based on the weight of the magnetic powder attached to the magnetic powder attachment component 35, and judge the service life of the rotary switch component based on whether the current transmission of the rotary switch component maintains stable changes at different rotation speeds.

[0058] The operating principle of this embodiment is as follows:

[0059] Step 1: First, place multiple rotary switch components of the same model in the switch holders 11 at corresponding positions, and the switch holder 11 can fix the rotary switch components. At the same time, the positive pole of the rotary switch component is connected to the switch holder 11, and the negative pole of the rotary switch component is connected to the connecting line 111. At this time, start the device. As the device starts, the switch holder 11 will input current to the positive pole of the rotary switch component. Note: The current delivered by each switch holder 11 to the rotary switch component remains consistent, that is, it has the same power supply device. As the device starts, the four motors 23 in the power mechanism 2 are also started, and the speed of one of the four motors 23 is always consistent, and The speed cannot be customized. The speed of this motor 23 is the speed of the rotary switch component under normal circumstances, and the three motors 23 can customize the speed through the controller 25. The customized speed can be divided into: low speed (usually between hundreds and thousands of revolutions per minute, suitable for testing switch components that require life and performance under low-speed operation), medium speed (usually around thousands to ten thousand revolutions per minute, suitable for life testing of switch components with general performance requirements) and high speed (usually reaching tens of thousands of revolutions or more, suitable for life and durability testing of high-performance switch components, especially for evaluating reliability under high-speed operating conditions) in three modes for specific customized speed (this rotary switch component does not require reset).

[0060] Among them, as the motor 23 is fully started, the lifting and rotating rod 24 is fixedly connected to the motor 23, so the lifting and rotating rod 24 is driven by the motor 23 to rotate, and while the lifting and rotating rod 24 rotates, its lower end also begins to extend downward, so that the lifting and rotating rod 24 contacts the rotary switch component, causing the rotating shaft of the rotary switch component to rotate. (The lifting and rotating rod 24 can be extended because it has a telescopic rod, a lifting device and a pressure switch. When the motor 23 drives the lifting and rotating rod 24 to rotate, the lifting device in the lifting and rotating rod 24 starts to control the telescopic rod to start extending downward. When the telescopic rod extends to contact the rotary switch component, it will squeeze the pressure switch, so that the telescopic rod stops extending.) As the lifting and rotating rod 24 completes the contact with the rotary switch component, the rotary switch component must maintain a certain pressure contact to drive it to rotate. Under the friction between the lifting and rotating rod 24 and the rotary switch component, the rotary switch component at the corresponding position and the lifting and rotating rod 24 at each position maintain a consistent rotation speed.

[0061] Step 2: When the lifting rotating rod 24 drives the rotary switch component to rotate, the electric variable detector 4 can detect the current change of the rotary switch component whose rotation speed is always consistent during rotation (the electric variable detector 4 is a prior art, which mainly indirectly evaluates the service life and status of the rotary switch component by measuring the magnitude and characteristics of the current. During the use of the rotary switch component, its contact parts (such as contact points or sliding connectors) will gradually wear out with time and use, which will cause changes in contact resistance, and then affect the current intensity and characteristics passing through the switch, thereby judging the service life of the rotary switch component), and record the detection results of the electric variable detector 4 as reference data.

[0062] The reason why the cycle life of rotary switch components can be determined based on current changes:

[0063] The service life of the rotary switch component is detected by detecting the current intensity of the rotary switch component in the rotating state. This is because the contact parts of the rotary switch component will wear out during long-term use. The contact parts of the rotary switch component include contact points or sliding connectors. When the switch rotates, these parts will inevitably experience friction and wear, especially when the switch load is large or the working environment conditions are harsh. This wear will be more significant. Specifically, by measuring the current intensity of the switch in the rotating state, the state of the contact parts can be indirectly reflected. As the contact parts wear, the contact resistance will increase, resulting in changes in the current intensity passing through the switch. If it is detected that the current intensity of the switch under the same load is gradually reduced, this may mean that the wear of the switch contact parts has affected its electrical performance, and based on this, the cycle life of the rotary switch component can be judged.

[0064] Among them, the other three rotary switch components with inconsistent rotation speeds are detected by the magnetic variable detection mechanism 3 at their respective positions. When the connecting wire 111 in the switch holder 11 transmits the current from the negative pole of the rotary switch component to the magnetic variable detection mechanism 3 for current change detection, when the current flows in the connecting wire 111, the connecting wire 111 in the convergence component 33 in the shielding box 31 (the shielding box 31 is mainly composed of electromagnetic shielding alloys, such as iron-nickel alloys (such as Mu metal), molybdenum alloys, etc., which have good shielding magnetic force performance), and the current of the connecting wire 111 then passes through the electromagnetic induction coil 336 and acts on the electromagnet 335, thereby generating an electromagnetic effect, thereby generating a magnetic force, thereby further transferring the magnetic force. The magnetic force is then transferred to the conductive frame 332, thereby causing the conductive frame 332 to be magnetized. Since the grid-shaped conductive frame 332 can guide the magnetic force to form a specific magnetic field distribution therein, and the focusing ring 333 can concentrate these distributed magnetic fields into the focusing ring 333, the focusing ring 333 can focus the dispersed magnetic force in the conductive frame 332, reduce the magnetic force loss caused by the dispersed structure of the conductive frame 332, avoid affecting the subsequent results of detecting the life of the rotary switch component by the magnitude of the magnetic force, and in order to prevent the magnetic force concentrated in the focusing ring 333 from further loss due to loss, a magnetic cover 334 is set in the focusing ring 333, and the magnetic cover 334 is made of high magnetic permeability materials, such as iron or steel. These materials have good magnetic permeability and can effectively guide the magnetic field streamlines, thereby re-concentrating the scattered magnetic force into the inside of the focusing ring 333, ensuring the effective use of the magnetic force and minimizing the loss.

[0065] In order to improve the magnetic conductivity of the conductive frame 332, a reflective component 32 is arranged on the top of the square box 331, and the reflective component 32 seals the square box 331 through the arc cover 321. The arc cover 321 can provide a shielding effect for the magnetic field transmitted in the conductive frame 332, prevent the external magnetic field from interfering with the magnetic force transmitted in the conductive frame 332, and avoid magnetic force loss. The partition plate 322 can divide the arc cover 321 into two layers, and a guide plate 323 and a circular cover 324 are arranged on the side of the partition plate 322 facing the square box 331. Two mutually superimposed components play a role in concentrating and focusing the magnetic force transmitted in the conductive frame 332, so that the magnetic force originally transmitted in the conductive frame 332 is concentrated. The magnetic force transmitted in a divergent state is concentrated to form magnetic field streamlines (magnetic flux lines) in the conductive frame 332, and the guide plate 323 and the circular cover 324 can make the magnetic force form magnetic field streamlines in the conductive frame 332, because: the circular cover 324 can help encapsulate the magnetic force in the conductive frame 332, and the guide plate 323 with a gradually increasing radius can stabilize the distribution and direction of the magnetic field. Therefore, through the mutual cooperation of the circular cover 324 and the guide plate 323, the magnetic force transmitted in the conductive frame 332 can be further focused into the conductive frame 332, thereby forming magnetic field streamlines in the conductive frame 332, thereby ensuring that the magnetic force is concentratedly transmitted in the conductive frame 332 and reducing the loss during the magnetic force transmission process.

[0066] Among them, the magnetic force gathered in the convergence circle 333 will be further transmitted to the elastic rod 351 in the magnetic powder attachment component 35 connected thereto, and the elastic rod 351 is mainly composed of nylon iron alloy (nylon iron alloy is a soft magnetic material with certain extensibility), so the elastic rod 351 can guide the magnetic force gathered in the convergence circle 333 and further transmit it to the attachment ball 352 (the attachment ball 352 is also composed of magnetic material), thereby causing the attachment ball 352 to generate magnetic force (the strength of the magnetic force in the attachment ball 352 is determined by the current output by the rotary switch component).

[0067] When the electric variable detector 4 is working, the air compressor 37 also starts working. As the air compressor 37 works, the air compressor 37 transmits the compressed air to the connecting block 344 through the connecting pipe 38. The connecting block 344 can guide the compressed air transmitted in the connecting pipe 38, so that the compressed air can enter the inner hollow column 342. The inner hollow column 342 can be divided into multiple areas by the partition net 346, and the magnetic powder is stored in each of the constructed areas. As the compressed air is continuously injected, the magnetic powder stored in the inner hollow column 342 is The magnetic powder is continuously sprayed out from the square groove 3421 under the action of the compressed air, and then enters the outer hollow column 341, and then is sprayed out through the inclined nozzle 3411 in the outer hollow column 341. Since the magnetic powder in the outer hollow column 341 is sprayed out through the inclined nozzle 3411, the outer hollow column 341 will rotate (because when the magnetic powder is sprayed out from the inclined nozzle 3411, the sprayed magnetic powder and the airflow will have a certain momentum, and according to the law of conservation of momentum, the momentum of the sprayed magnetic powder and the airflow will generate a torque in the outer hollow column 341, and this torque The outer hollow column 341 will rotate). As the magnetic powder is continuously sprayed out from the rotating spray storage assembly 34, the attachment ball 352 will adsorb the sprayed magnetic powder. The amount of magnetic powder adsorbed by the attachment ball 352 is determined by the current of the rotary switch component. At this time, the weight detector 36 determines the amount of magnetic powder adsorbed by the attachment ball 352 by detecting the weight in the attachment ball 352. Then, the service life of the rotary switch component is determined according to whether the amount of magnetic powder tends to be stable when the rotary switch component rotates. This is because when the magnetic powder adsorbed in the attachment ball 352 is stable, it indicates that the rotary switch component is stable. The current output by the component is stable. If the magnetic powder adsorbed in the attached ball 352 is unstable or gradually decreases, it means that the current output by the rotary switch component is unstable, which means that the wear of the contact parts of the rotary switch component has reached the limit and has affected its electrical performance. Based on this, the cycle life of the rotary switch component is judged, and the weight detector 36 will further transmit the detection data to the controller 25, thereby forming a comparison result of the service life of the rotary switch component under normal conditions, low speed conditions, medium speed conditions and high speed conditions in the controller 25.

[0068] The reason why different rotation speeds are provided for the rotary switch component by the power mechanism 2 is that the rotary switch components in the same application scenario may face inconsistent working speed requirements. By setting multiple rotation speeds with different speeds, various working conditions that the switch may encounter in actual use can be simulated and evaluated, so as to more comprehensively test its performance and life, thereby completing the detection test of the cycle life of the switch component.

[0069] Among them, when the detection is completed, the air compressor 37 starts to work in reverse (the shielding box 31 has ventilation holes), so as to recover the magnetic powder sprayed onto the attached ball 352 (as the detection is completed, the rotary switch component no longer transmits current, and the attached ball 352 at this time does not have magnetism) into the area formed by the partition net 346 in the inner hollow column 342, and then the air compressor 37 also stops working.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary switch component cycle life test device, characterized in that: include: A base (1), wherein a power mechanism (2) is arranged on the top of the base (1), wherein the power mechanism (2) comprises support rods (26) fixedly connected to the four corners of the top of the base (1), wherein four switch holders (11) are arranged in a rectangular array on the top of the base (1) and in the region of the four support rods (26), wherein each of the switch holders (11) is fixed with a rotary switch component of the same model, wherein the switch holder (11) has a positive and a negative pole, wherein the positive pole of the switch holder (11) is electrically connected to a power source, and the negative pole of the switch holder (11) is electrically connected to a connecting line (111), and the switch holder (11) is electrically connected to the rotary switch component; Three magnetic variable detection mechanisms (3) and an electric variable detector (4) are fixedly connected to both sides of the base (1); the magnetic variable detection mechanism (3) comprises a shielding box (31) fixedly connected to both sides of the base (1) and corresponding to the position of the switch holder (11); the inner wall of the shielding box (31) is provided with a reflection component (32) and a convergence component (33) in sequence from top to bottom; two magnetic powder attachment components (35) for adsorbing magnetic powder and a spray storage component (34) for spraying magnetic powder are provided inside the shielding box (31) and below the convergence component (33); Any three of the switch holders (11) are electrically connected to the corresponding magnetic variable detection mechanisms (3) via a connecting line (111), and another of the switch holders (11) is electrically connected to the corresponding electric variable detector (4) via a connecting line (111); The rotary switch component in the switch holder (11) transmits current to the convergence component (33), and the convergence component (33) converts the transmitted current into magnetism, and further transmits the magnetism to the magnetic powder adhesion component (35). The current size and service life of the rotary switch component are determined based on the amount of magnetic powder adsorbed by the magnetic powder adhesion component (35).

2. A rotary switch component cycle life test device according to claim 1, characterized in that: The power mechanism (2) comprises a protection box (21) fixedly connected to the upper end of a support rod (26); a heat sink (22) is fixedly connected to the top of the protection box (21); a lifting and rotating rod (24) is rotatably connected to the lower end of the protection box (21) and at a corresponding position of each rotary switch component; the lifting and rotating rod (24) is retractable; a motor (23) for driving each lifting and rotating rod (24) is fixed in the protection box (21); the driving speeds of the plurality of motors (23) are different; a controller (25) is fixedly connected to one side of the protection box (21); the controller (25) is electrically connected to the magnetic variable detection mechanism (3), the electric variable detector (4), and the motor (23).

3. A rotary switch component cycle life test device according to claim 1, characterized in that: The reflective assembly (32) comprises an arc-shaped cover (321) fixedly connected to the inner wall of the shielding box (31); a partition plate (322) is horizontally fixedly connected to the inner wall of the arc-shaped cover (321); a plurality of arc-shaped blocks (325) are fixedly connected to the upper end surface of the partition plate (322) in a linear array; a pair of guide plates (323) corresponding to each arc-shaped block (325) are fixedly connected to the lower end surface of the partition plate (322); the guide plates (323) are composed of a plurality of circular plates fixedly connected from bottom to top and with increasing diameters; and a circular cover (324) is fixedly connected to the top of the guide plates (323).

4. A rotary switch component cycle life test device according to claim 1, characterized in that: The convergence assembly (33) comprises a square box (331) fixedly connected to the inner wall of the shielding box (31); a pair of grid-shaped conductive frames (332) are fixedly connected to the inner wall of the square box (331); the conductive frames (332) have a matrix-distributed frame, a plurality of convergence circles (333) are fixed in the frame, a magnetic cover (334) is fixedly provided at the upper end of the conductive frame (332) and at corresponding positions of the plurality of convergence circles (333); an electromagnet (335) is fixedly connected to opposite surfaces of a pair of conductive frames (332); the electromagnet (335) comprises a magnetic induction coil (336) arranged in the length direction; a connecting line (111) is electrically connected to the electromagnetic induction coil (336); and the connecting line (111) is electrically connected to the negative pole of a power supply via a current limiting resistor to form a closed circuit.

5. The rotary switch component cycle life test device according to claim 1, characterized in that: The spray storage assembly (34) comprises an outer hollow column (341) rotatably connected to the central position of the bottom of the shielding box (31), the outer circumferential surface of the outer hollow column (341) is evenly fixedly connected to a plurality of inclined nozzles (3411), the upper end of the outer hollow column (341) is fixedly connected to a central axis (343), the inner middle part of the outer hollow column (341) is fixedly connected to an inner hollow column (342), and the outer circumferential surface of the inner hollow column (342) is evenly opened with a plurality of square grooves (3411). 21), the inner linear array of the inner hollow column (342) is fixedly connected to an odd number of partition nets (346) at least greater than or equal to three, every two adjacent partition nets (346) constitute a storage area, and each storage area stores magnetic powder, the inner top end of the inner hollow column (342) is fixedly connected to a magnetic powder detector (345), and the bottom of the shielding box (31) is fixedly connected to a connecting block (344) that penetrates the shielding box (31) and is airtightly rotatably connected to the inner hollow column (342).

6. A rotary switch component cycle life test device according to claim 4, characterized in that: The inner bottom of the shielding box (31) is symmetrically fixedly connected to two weight detectors (36) with respect to the spray storage assembly (34); the magnetic powder attachment assembly (35) comprises a plurality of elastic rods (351) fixedly connected in a rectangular array to the opposite surface of the weight detector (36) and the square box (331); the elastic rods (351) penetrate the inner bottom of the square box (331) and contact the convergence ring (333); and the shaft of each of the elastic rods (351) is fixedly connected to a plurality of attachment balls (352) in a linear array.

7. A rotary switch component cycle life test device according to claim 1, characterized in that: An air compressor (37) is fixedly connected to one side of the base (1); the air compressor (37) has two output ports; each of the output ports is fixedly connected to a connecting pipe (38); and the connecting pipe (38) is fixedly connected to a connecting block (344).

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