Switch testing device and method

Abstract

The invention belongs to the technical field of switch testing, and particularly relates to a switch testing device and method.The switch testing device comprises a testing table and a switch body, the switch body is located on the end face of the testing table, and a groove plate is arranged above the switch body and covers the outer side of a heat dissipation hole of the switch body; a side plate is fixed to the end face of the test board, and an electric push rod is fixed to the side wall of the side plate. According to the invention, not only can the working performance of the switch body in a high-temperature environment be simulated and tested, but also the heat conduction and heat dissipation performance of the switch body can be tested so as to ensure that the heat dissipation efficiency of a factory switch can meet the use requirement, and the working performance of the switch in an external electromagnetic interference environment can be simulated. Meanwhile, a plurality of crystal plugs can be independently inserted into the corresponding plug-in ports at a time without mutual influence, the plug-in effect is good, and the anti-drop performance between the switch and the crystal plugs can be tested.

Description

Technical Field

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

[0002] A switch is a device that completes the information exchange function in a communication system, and an industrial switch is an indispensable communication device in current industrial production. In order to ensure the quality of the switch after production, the finished switch needs to be tested.

[0003] Industrial switches need to work for long periods of time and have multiple ports connected for communication, which can cause the switches to generate high operating temperatures. Therefore, they are placed in a centrally located computer room. By controlling the temperature and humidity in the computer room, the switches can be ensured to operate in a stable environment. Therefore, when testing industrial switches, the operating performance of the industrial switches is generally tested in a simulated high-temperature environment (for example, the switch automated testing device and testing method disclosed in Patent Publication No.: CN106789423A). Due to the different materials and thicknesses of the switch body, some bodies are also painted on the surface. The thickness and material of the paint will affect the thermal conductivity of the body, thereby affecting the heat dissipation efficiency of the switch. The computer room only maintains the stability of the overall temperature environment in the room. Therefore, it is also necessary to cooperate with the heat dissipation performance of the switch itself to ensure that the switch works at an appropriate temperature. If the heat dissipation performance of the switch itself is poor, there is a possibility that the high temperature inside the switch cannot be reduced in time. If the switch works in a high temperature environment for a long time, there will still be unstable working conditions. Only a short-term high temperature environment simulation test will lead to incomplete test results. Summary of the Invention

[0004] The object of the present invention is to provide a switch testing device and method in order to solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a switch test device, comprising a test bench and a switch body, wherein the switch body is arranged at the end face of the test bench, a slot plate is provided above the switch body, and the slot plate is provided on the outside of the heat dissipation hole of the switch body, the end face of the test bench is fixed with a side plate, and the side wall of the side plate is fixed with an electric push rod, and the output end of the electric push rod is fixed with a hollow plate, the side wall of the hollow plate is connected to an air pump, and the side wall of the hollow plate is fixed with a plurality of fixed tubes, and the end of each fixed tube is fixed with a reversing box, each The side walls of each reversing box are fixed with a barrel, and each barrel is provided with a crystal plug inside, each crystal plug is provided with a cable, and each cable is slidably connected to the end of the barrel on the same side, each crystal plug is connected to an automatic plugging mechanism together with the reversing box, and each barrel is provided with a trigger switching mechanism that cooperates with the automatic plugging mechanism inside, a heating box is provided on one side of each barrel, and each heating box and the reversing box on the same side are connected to a heating mechanism together with the slot plate, and a plug-in test mechanism is connected between each heating box and the barrel on the same side; A groove is provided on the end face of the test bench, and two insulating columns are fixed inside the groove. A thermistor is fixed between the two insulating columns, and a plurality of temperature-sensing contacts are fixed to the end face of the thermistor. Each of the temperature-sensing contacts is arranged to abut against the lower end of the switch body. An electromagnetic switch and a buzzer connected to each other are fixed on the end face of the test bench. The electromagnetic switch and the thermistor are connected to a gas collection timing mechanism. A controller is fixed to the side wall of the test bench.

[0006] Preferably, each of the automatic plug-in mechanisms includes a piston block fixedly sleeved on the outer side wall of the crystal plug, and the piston block is slidably arranged inside the barrel on the same side, a first spring and a flexible membrane sleeve are commonly provided between the piston block and the inner bottom of the barrel, and the first spring and the flexible membrane sleeve are both sleeved on the outside of the cable, a pressure block matching the crystal plug is fixed to the end of the inner wall of the barrel away from the hollow plate, and a first pressure switch is fixed to the side wall of the pressure block, a first indicator light connected to the first pressure switch is fixed to the side wall of the test bench, an air inlet is opened on the side wall of the barrel, and a first normally open solenoid valve matching the air inlet is provided inside the reversing box.

[0007] Preferably, each of the trigger switching mechanisms includes a T-shaped slot opened on the inner wall of the barrel, and the T-shaped slot is arranged corresponding to the position of the first spring on the same side, a T-shaped piston is slidably provided inside the T-shaped slot, and an annular elastic pad is provided between the end face of the T-shaped piston and the bottom of the T-shaped slot, a trigger switch is fixed to the bottom of the T-shaped slot, and the first normally open solenoid valve is connected to the trigger switch.

[0008] Preferably, each of the heating mechanisms includes a connecting pipe fixedly arranged between the heating box and the reversing box, and the interior of the reversing box and the interior of the heating box are both provided with a first normally closed solenoid valve connected to the trigger switch, and the side wall of the heating box is fixed with an exhaust hose corresponding to the position of the first normally closed solenoid valve on the same side, and the exhaust hose is connected to the trough plate, and a plurality of electric heating rods are fixedly provided inside the heating box.

[0009] Preferably, the plug-in and plug-out test mechanism includes a shunt tube fixedly arranged between the barrel and the heating box, and a second normally closed solenoid valve corresponding to the position of the shunt tube is provided inside the heating box, the barrel wall of the barrel is provided with a hollow block connected to the interior of the barrel, and a first round plug is slidably provided inside the hollow block, a second spring is provided between the first round plug and the hollow block, a second pressure switch is fixedly provided on the inner wall of the hollow block, and a second indicator light connected to the second pressure switch is provided on the side wall of the test bench, an exhaust hole is opened at the barrel end of the barrel, and a third normally closed solenoid valve connected to the exhaust hole is provided on the outer side of the barrel end of the barrel.

[0010] Preferably, the gas collection timing mechanism includes a cavity opened inside the test bench, and an insulating pad is fixed to the cavity wall of the cavity, a conductive plate is fixed to the end face of the insulating pad, an insulating movable block is movably provided on the lower side of the interior of the cavity, and a movable conductive block is fixed on the top of the insulating movable block, an air cavity is opened inside the test bench at a position on one side of the cavity, and a second round plug is slidably provided inside the air cavity, and a top rod is fixed between the second round plug and the insulating movable block, a third spring is fixed between the second round plug and the side wall of the air cavity, a slow-release air vent is opened on the lower cavity wall of the air cavity, a connecting hole is opened on the cavity wall of the cavity, and a second normally open solenoid valve connected to the trigger switch is provided inside the connecting hole, and an inflation hose is connected to the hollow plate.

[0011] Preferably, a frame is fixed to the end face of the test bench, and a crimping cylinder is fixedly plugged into the end face of the frame, and an output end of the crimping cylinder is fixedly connected to the end face of the slot plate.

[0012] A method for using a switch testing device, the method comprising the following steps: S1. Position the switch body on the end face of the test bench, with the switch body's plug-in port located on one side of the hollow plate. Use the crimping cylinder to press the slot plate firmly onto the switch body, and connect the external test communication device to the corresponding crystal plug via a cable. S2. Then, the test operation is started by the controller. After observing that each first indicator light is on, the external test communication sending device starts to send information, and the external test communication receiving device receives the information; S3. After the communication transmission and reception test begins, a communication test in a high-temperature environment can be performed using an external test communication device. If the buzzer does not sound within 3 minutes, it indicates that the heat conduction performance of the switch body is poor and the heat dissipation performance cannot meet the use requirements. At this time, the entire test can be stopped. If the buzzer sounds, it indicates that the heat dissipation performance of the switch body is sufficient for use. S4. In step S3, the buzzer sounds, and the tester controls the controller to stop the buzzer. Then, the tester observes that all the first indicator lights and the second indicator lights on the same side are all lit, indicating that the anti-dropout performance of the corresponding plug-in port on the switch body is qualified. If the corresponding first indicator light goes out before the second indicator light is lit, it indicates that the anti-dropout performance of the corresponding plug-in port on the switch body is unqualified. S5. After the anti-dropout performance test of each plug-in port is completed, the reset button of the controller can be used to control each electronic control component to reset. After that, the switch body that has completed the test is taken out and the next switch body can be tested.

[0013] Compared with existing technologies, the advantages of a switch testing device and method are: 1. The switch body to be tested can be placed on the test bench, and through the cooperation of the slot plate, side plate, electric push rod, hollow plate, air pump, fixed tube, reversing box, barrel, crystal plug, circuit and automatic plug-in mechanism, multiple crystal plugs can be inserted into the corresponding plug-in ports at one time without affecting each other, and the plug-in effect is good.

[0014] 2. Through the mutual cooperation of the trigger switching mechanism, heating box and heating mechanism, after the crystal plug is inserted into the plug port of the switch, it can automatically switch to heating operation to simulate the high-temperature working environment inside the switch body, so that the working performance of the switch body in a high-temperature environment can be tested. Through the mutual cooperation of the provided grooves, insulating columns, thermistors, temperature-sensing contacts, electromagnetic switches, buzzers and gas collection timing mechanisms, the heat of the simulated high-temperature environment can be used to synchronously test the thermal conductivity performance of the switch body, so that the heat dissipation performance of the switch body itself can be tested and determined to ensure that the heat dissipation performance of the factory-produced switch body can meet actual use. At the same time, through the provided first normally open solenoid valve, first normally closed solenoid valve, second normally open solenoid valve, second normally closed solenoid valve, electromagnetic switch, etc., the working performance of the switch under electromagnetic interference conditions can also be simulated.

[0015] 3. Through the plug-in test mechanism, it can work in a simulated high-temperature environment. After the heat dissipation performance test is completed, the anti-detachment performance of each plug-in port of the switch body can be tested to ensure that the connection between the external network cable and the switch body can maintain sufficient stability during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a switch testing device and method provided by the present invention; Figure 2 This is a schematic diagram of the internal structure of a barrel of a switch testing device and method provided by the present invention; Figure 3 This is a schematic diagram of the internal structure of a commutation box of a switch testing device and method provided by the present invention; Figure 4 This is a schematic diagram of the internal structure of a heating box of a switch testing device and method provided by the present invention; Figure 5 It is a schematic diagram of the internal structure of a hollow block of a switch testing device and method provided by the present invention; Figure 6 This is a schematic diagram of the internal structure of a test bench of a switch testing device and method provided by the present invention; Figure 7 The present invention provides a schematic diagram of the internal structure of a slot board of a switch testing device and method.

[0017] In the figure: 1 test bench, 2 exchange body, 3 slot plate, 4 side plate, 5 electric push rod, 6 hollow plate, 7 air pump, 8 fixed pipe, 9 reversing box, 10 barrel, 11 crystal plug, 12 cable, 13 automatic plugging mechanism, 131 piston block, 132 first spring, 133 flexible membrane sleeve, 134 pressure block, 135 first pressure switch, 136 first indicator light, 137 air inlet, 138 first normally open solenoid valve, 14 trigger switching mechanism, 141 T-slot, 142 T-piston, 143 annular elastic pad, 144 trigger switch, 15 heating box, 16 heating mechanism, 161 connecting pipe, 162 first normally closed solenoid valve, 163 exhaust hose, 164 electric heating rod, 17 plug-in test mechanism, 171 shunt pipe , 172 second normally closed solenoid valve, 173 hollow block, 174 first round plug, 175 second spring, 176 second pressure switch, 177 second indicator light, 178 exhaust hole, 179 third normally closed solenoid valve, 18 groove, 19 insulating column, 20 thermistor, 21 temperature sensing contact, 22 electromagnetic switch, 23 buzzer, 24 gas collecting timing mechanism, 241 cavity, 242 insulating pad, 243 conductive plate, 244 insulating movable block, 245 movable conductive block, 246 air cavity, 247 second round plug, 248 push rod, 249 third spring, 2410 slow-release vent hole, 2411 connecting hole, 2412 second normally open solenoid valve, 2413 inflation hose, 25 controller, 26 rack, 27 crimping cylinder. DETAILED DESCRIPTION

[0018] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0019] like Figure 1-7 As shown, a switch testing device includes a test bench 1 and a switch body 2, the switch body 2 is arranged on the end face of the test bench 1, a slot plate 3 is provided above the switch body 2, and the slot plate 3 is arranged to cover the outside of the heat dissipation holes of the switch body 2, the end face of the test bench 1 is fixed with a rack 26, and the end face of the rack 26 is fixedly plugged with a crimping cylinder 27, and the output end of the crimping cylinder 27 is fixedly connected to the end face of the slot plate 3. Through the operation of the crimping cylinder 27, the pressure of the slot plate 3 on the switch body 2 can make the switch body 2 stably fixed on the test bench 1, wherein the area of the slot plate 3 needs to be larger than the area of the heat dissipation holes on the switch body 2, that is, the heat dissipation holes on the switch body 2 need all to be located inside the slot plate 3, and a pressure tube should also be provided on the slot plate 3, and a pressure valve is provided in the pressure tube for discharging excess air inside the switch body 2.

[0020] The end face of the test bench 1 is fixed with a side panel 4, and the side wall of the side panel 4 is fixed with an electric push rod 5, and the output end of the electric push rod 5 is fixed with a hollow plate 6, and the side wall of the hollow plate 6 is connected to an air pump 7, and the side wall of the hollow plate 6 is fixed with a plurality of fixed tubes 8, and the end of each fixed tube 8 is fixed with a reversing box 9, and the side wall of each reversing box 9 is fixed with a barrel 10, and the interior of each barrel 10 is provided with a crystal plug 11, and each crystal plug 11 is provided with a cable 12, and each cable 12 is slidably connected to the end of the barrel 10 on the same side, and the other end of the cable 12 can be connected to an external test communication device (such as multiple computers). During the test, the information data transmission and reception test is performed through the test equipment, and the working performance of the switch such as communication delay and packet loss can be measured. The method of testing by the test communication equipment is an existing mature technology, so it is not described in detail.

[0021] Each crystal plug 11 is connected to the reversing box 9 by an automatic plugging mechanism 13. Each automatic plugging mechanism 13 includes a piston block 131 fixedly sleeved on the outer wall of the crystal plug 11, and the piston block 131 is located in the inner sliding arrangement of the barrel 10 on the same side. A first spring 132 and a flexible membrane sleeve 133 are provided between the inner bottom of the barrel 10, and the first spring 132 and the flexible membrane sleeve 133 are both located on the outside of the cable 12. A pressure block 134 matching the crystal plug 11 is fixed to the end of the inner wall of the barrel 10 away from the hollow plate 6, and a first pressure switch 135 is fixed to the side wall of the pressure block 134. A first indicator light 136 connected to the first pressure switch 135 is fixed to the side wall of the test bench 1. An air inlet 137 is provided on the side wall of the barrel 10, and a first normally open solenoid valve 138 matching the air inlet 137 is provided inside the reversing box 9. The flexible membrane sleeve 133 can prevent the air entering the barrel 10 from leaking through the connection between the cable 12 and the barrel 10. The first normally open solenoid valve 138 is closed when energized, and the air inlet 137 remains open when not energized.

[0022] Each barrel 10 is internally provided with a trigger switching mechanism 14 that cooperates with the automatic plug-in mechanism 13. Each trigger switching mechanism 14 includes a T-slot 141 opened on the inner wall of the barrel 10, and the T-slot 141 is arranged corresponding to the position of the first spring 132 on the same side. A T-shaped piston 142 is slidingly provided inside the T-slot 141, and an annular elastic pad 143 is provided between the end face of the T-slot 142 and the bottom of the T-slot 141. A trigger switch 144 is fixed to the bottom of the T-slot 141, and the first normally open solenoid valve 138 is connected to the trigger switch 144. The T-slot 142 is composed of a round block, a piston sleeve and a vertical rod. The trigger switch 144 is a pressure type switch. After being subjected to extrusion pressure, the moving contact will close. After the extrusion force disappears, the moving contact will rebound under the action of the elastic element inside the trigger switch 144.

[0023] A heating box 15 is provided on one side of each barrel 10, and each heating box 15 and the reversing box 9 on the same side are connected to a heating mechanism 16 with the slot plate 3. Each heating mechanism 16 includes a connecting pipe 161 fixedly arranged between the heating box 15 and the reversing box 9, and the interior of the reversing box 9 and the interior of the heating box 15 are provided with a first normally closed solenoid valve 162 connected to the trigger switch 144. An exhaust hose 163 corresponding to the position of the first normally closed solenoid valve 162 on the same side is fixed to the side wall of the heating box 15, and the exhaust hose 163 is connected to the slot plate 3. A plurality of electric heating rods 164 are fixed inside the heating box 15. The first normally closed solenoid valve 162 will be in an open state after power is turned on, and will remain in a closed state after power is turned off. The heating temperature of the plurality of electric heating rods 164 is 80°C.

[0024] Each heating box 15 is connected to the barrel 10 on the same side with a plug-in test mechanism 17, which includes a shunt pipe 171 fixedly arranged between the barrel 10 and the heating box 15, and a second normally closed solenoid valve 172 corresponding to the position of the shunt pipe 171 is provided inside the heating box 15, and the barrel wall of the barrel 10 is provided with a hollow block 173 connected to the inside of the barrel 10, and a first round plug 174 is slidably provided inside the hollow block 173, and a second spring 175 is provided between the first round plug 174 and the hollow block 173, and a second pressure switch 176 is fixed on the inner wall of the hollow block 173, and the side wall of the test bench 1 A second indicator light 177 connected to the second pressure switch 176 is provided, an exhaust hole 178 is provided at the barrel end of the barrel 10, and a third normally closed solenoid valve 179 connected to the exhaust hole 178 is provided on the outer side of the barrel end of the barrel 10. A groove matching the check buckle on the crystal plug 11 is provided on the plug-in port of the exchange body 2. The groove and the check buckle are pressed and engaged to prevent the crystal plug 11 from falling off. When the anti-falling performance of the plug-in port is good, the second pressure switch 176 will make the second indicator light 177 work, indicating that the anti-falling performance of the exchange body 2 can meet the use requirements. Otherwise, it cannot meet the use requirements. The end face of the test bench 1 is provided with a groove 18, and two insulating columns 19 are fixed inside the groove 18, a thermistor 20 is fixed between the two insulating columns 19, and a plurality of temperature-sensing contacts 21 are fixed to the end face of the thermistor 20, and each temperature-sensing contact 21 is set against the lower end of the exchange body 2, and an electromagnetic switch 22 and a buzzer 23 connected to each other are fixed on the end face of the test bench 1, and the electromagnetic switch 22 and the thermistor 20 are jointly connected to a gas collection timing mechanism 24, and a controller 25 is fixed to the side wall of the test bench 1. The gas collection timing mechanism 24 includes a cavity 241 opened inside the test bench 1, and an insulating pad 242 is fixed to the cavity wall of the cavity 241, and a conductive plate 243 is fixed to the end face of the insulating pad 242, an insulating movable block 244 is movably provided on the lower side of the interior of the cavity 241, and a movable conductive block 245 is fixed on the top of the insulating movable block 244, and the interior of the test bench 1 An air cavity 246 is provided at one side of the cavity 241, and a second round plug 247 is slidingly provided inside the air cavity 246, and a top rod 248 is fixed between the second round plug 247 and the insulating movable block 244, and a third spring 249 is fixed between the second round plug 247 and the side wall of the air cavity 246, a slow-release air hole 2410 is provided on the lower cavity wall of the air cavity 246, a connecting hole 2411 is provided on the cavity wall of the cavity 241, and a second normally open solenoid valve 2412 connected to the trigger switch 144 is provided inside the connecting hole 2411, and an inflation hose 2413 is connected to the connecting hole 2411 and the hollow plate 6, the upper end of the movable conductive block 245 is set higher than the lower end of the conductive plate 243, and the side wall of the movable conductive block 245 close to the conductive plate 243 is provided with an inclined groove for smooth transition of the movable conductive block 245 to contact with the conductive plate 243.

[0025] The operating principle of the present invention is described as follows: the exchange body 2 is positioned on the end face of the test bench 1 so that the plug-in port of the exchange body 2 is located on one side of the hollow plate 6, and the crimping cylinder 27 is operated to stably crimp the slot plate 3 on the exchange body 2, and the slot plate 3 covers the outside of the heat dissipation hole of the exchange body 2, and the external test communication equipment is connected to the corresponding crystal plug 11 through the cable 12, and then the test work is started through the controller 25, the electric push rod 5 and the air pump 7 start working, the electric push rod 5 will work for 2 seconds, at this time each barrel 10 will be tightly against the side wall of the exchange body 2, and the air pump 7 is working, and air can be delivered to the inside of each barrel 10 through the fixed tube 8, the first normally open solenoid valve 138 in each reversing box 9 and each air inlet hole 137, as well as through the inflation hose 2413, the connecting hole 2411 and the second normally open solenoid valve in the test bench 1. Valve 2412 supplies air to the interior of the air cavity 246. As the air pressure inside the barrel 10 increases, each crystal plug 11 moves along with the piston block 131 on the same side and, in cooperation with the pressing block 134, can be inserted into the corresponding plug-in port on the switch body 2. At this time, the moving contact of the first pressure switch 135 is squeezed and triggered, which can energize the first indicator light 136. After observing that each first indicator light 136 lights up, it indicates that each crystal plug 11 is stably plugged into the plug-in port of the switch body 2. At the same time, the second round plug 247 inside the air cavity 246, under the action of air pressure, also drives the insulating movable block 244 to move through the push rod 248, so that the movable conductive block 245 can contact the lower end of the conductive plate 243. At this time, the external test communication sending device starts to send information, and the external test communication receiving device receives the information. After the test of communication and receiving information begins, as the air pressure inside the barrel 10 continues to increase, the T-shaped piston 142 will be pushed upward. At this time, the T-shaped piston 142 will press the moving contact of the trigger switch 144, so that the controller 25 can control the first normally open solenoid valve 138 in each reversing box 9 and the second normally open solenoid valve 2412 in the test bench 1 to be energized and closed, and the first normally closed solenoid valve 162 inside the two reversing boxes 9 and the heating box 15 is energized to open, and the various electric heating rods 164 inside the heating box 15 are energized to work. At this time, the air discharged from the hollow plate 6 enters the interior of the slot plate 3 through the reversing box 9, the connecting pipe 161, the heating box 15, the two first normally closed solenoid valves 162 and the exhaust hose 163, and enters the interior of the exchange body 2 through the heat dissipation holes of the exchange body 2 itself. The heating temperature of each electric heating rod 164 is 80°C, so that the interior of the exchange body 2 can be placed in a high temperature environment. At this time, the communication test under high temperature environment can be carried out through the external test communication equipment; At the same time, the temperature inside the exchange body 2 will be conducted outward through the body, and the transferred temperature will be transmitted to the thermistor 20 through each temperature-sensing contact 21. As the temperature transfer increases, the resistance of the thermistor 20 becomes lower and lower. At this time, the current flowing into the electromagnetic switch 22 is sufficient to trigger the closing of the moving contact of the electromagnetic switch 22. Since the second normally open electromagnetic valve 2412 in the test bench 1 is energized and closed, the air inside the air cavity 246 will be slowly discharged through the slow-release vent 2410. Under the action of the third spring 249, the second round plug 247 will drive the top rod 248 and the insulating movable block 244 to move back. At 3 minutes, the insulating movable block 244 will drive the movable conductive block 24 5 moves back and away from the conductive plate 243. Therefore, within 3 minutes, the circuit formed by the buzzer 23, the electromagnetic switch 22, the conductive plate 243, the movable conductive block 245 and the thermistor 20 can be connected. If the waiting time exceeds 3 minutes, since the movable conductive block 245 is separated from the conductive plate 243, the thermistor 20 cannot control the buzzer 23 through the electromagnetic switch 22. Therefore, if the buzzer 23 does not sound, it means that the heat conduction performance of the exchange body 2 is poor and the heat dissipation performance cannot meet the use requirements. At this time, the entire test can be stopped. If the buzzer 23 sounds, it means that the heat dissipation performance of the exchange body 2 is sufficient for use. On the premise that the buzzer 23 has sounded, the tester controls the buzzer 23 to stop working through the controller 25, and the controller 25 controls the first normally open solenoid valve 138, the second normally open solenoid valve 2412 and the first normally closed solenoid valve 162 on the heating box 15 to remain in a closed state, and controls the second normally closed solenoid valve 172 inside the heating box 15 and the third normally closed solenoid valve 179 on the barrel 10 to remain in an open state. At this time, the air delivered by the air pump 7 passes through the hollow plate 6, the fixed tube 8, the reversing box 9, the connecting tube 161, the heating box 15 and the diverter tube 171, and enters the barrel 10. As the delivered gas increases, the air pressure inside the barrel 10 increases. Under normal circumstances, excess air will enter the hollow block 173 and push the first round plug 174 to move until the second pressure switch 176 is touched. At this time, the second indicator light 177 is energized and works. Since the crystal plugs 11 are automatically plugged in, the first pressure switch 135 is squeezed and triggered by the piston block 131, so the first indicator light 136 is already lit. Therefore, as long as the personnel observe that the first indicator light 136 and the second indicator light 177 on the test bench 1 are all lit, it indicates that the anti-slip performance of the corresponding plug-in port on the switch body 2 is qualified. If the anti-slip performance of the plug-in port of the switch body 2 is unqualified, due to the increase in the internal air pressure of the barrel 10, the piston block 131 will be pushed to drive the crystal plug 11 to move back. At this time, the squeezing force of the piston block 131 on the moving contact of the first pressure switch 135 disappears. The moving contact of the first pressure switch 135 moves back and resets under the action of its own elastic element. At this time, the first indicator light 136 is off. Therefore, before the second indicator light 177 is lit, the corresponding first indicator light 136 is off, indicating that the anti-slip performance of the corresponding plug-in port on the switch body 2 is unqualified. After the anti-slip performance test of each plug-in port is completed, the reset button of the controller 25 can be used to control each electronic control component to perform the reset work. Then, after the switch body 2 that has completed the test is taken out, the test of the next switch body 2 can be carried out.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A switch testing device, comprising a test bench (1) and a switch body (2), characterized in that: The exchange body (2) is arranged at the end face of the test bench (1), a slot plate (3) is arranged above the exchange body (2), and the slot plate (3) is arranged to cover the outside of the heat dissipation hole of the exchange body (2), the end face of the test bench (1) is fixed with a side plate (4), and the side wall of the side plate (4) is fixed with an electric push rod (5), and the output end of the electric push rod (5) is fixed with a hollow plate (6), the side wall of the hollow plate (6) is connected to an air pump (7), the side wall of the hollow plate (6) is fixed with a plurality of fixed pipes (8), and the end of each fixed pipe (8) is fixed with a reversing box (9), the side wall of each reversing box (9) is fixed with a barrel (10), and the interior of each barrel (10) is provided with Crystal plug (11), each crystal plug (11) is provided with a cable (12), and each cable (12) is slidably connected to the end of the barrel (10) on the same side, each crystal plug (11) is connected to the reversing box (9) with an automatic plugging mechanism (13), and each barrel (10) is provided with a trigger switching mechanism (14) that cooperates with the automatic plugging mechanism (13) inside, each barrel (10) is provided with a heating box (15) on one side, and each heating box (15) and the reversing box (9) on the same side are connected to a heating mechanism (16) with the slot plate (3), and each heating box (15) is connected to the barrel (10) on the same side with a plug-in test mechanism (17); The end surface of the test bench (1) is provided with a groove (18), and two insulating columns (19) are fixed inside the groove (18), a thermistor (20) is fixed between the two insulating columns (19), and a plurality of temperature-sensing contacts (21) are fixed to the end surface of the thermistor (20), and each of the temperature-sensing contacts (21) is arranged to abut against the lower end of the exchange body (2). An electromagnetic switch (22) and a buzzer (23) connected to each other are fixed to the end surface of the test bench (1), and a gas collection timing mechanism (24) is connected to the electromagnetic switch (22) and the thermistor (20). A controller (25) is fixed to the side wall of the test bench (1).

2. A switch testing device according to claim 1, characterized in that: Each of the automatic plug-in mechanisms (13) includes a piston block (131) fixedly sleeved on the outer wall of the crystal plug (11), and the piston block (131) is located inside the barrel (10) on the same side and is slidably arranged. A first spring (132) and a flexible membrane sleeve (133) are provided between the inner bottom of the barrel (10), and the first spring (132) and the flexible membrane sleeve (133) are both located on the outer side of the cable (12). A pressing block (134) matching the crystal plug (11) is fixed to the end of the inner wall of the barrel (10) away from the hollow plate (6), and a first pressure switch (135) is fixed to the side wall of the pressing block (134). A first indicator light (136) connected to the first pressure switch (135) is fixed to the side wall of the test bench (1). An air inlet (137) is provided on the side wall of the barrel (10), and a first normally open solenoid valve (138) matching the air inlet (137) is provided inside the reversing box (9).

3. A switch testing device according to claim 2, characterized in that: Each of the trigger switching mechanisms (14) includes a T-shaped slot (141) opened on the inner wall of the barrel (10), and the T-shaped slot (141) is arranged corresponding to the position of the first spring (132) on the same side, a T-shaped piston (142) is slidably provided inside the T-shaped slot (141), and an annular elastic pad (143) is provided between the end surface of the T-shaped piston (142) and the bottom of the T-shaped slot (141), a trigger switch (144) is fixed to the bottom of the T-shaped slot (141), and the first normally open solenoid valve (138) is connected to the trigger switch (144).

4. A switch testing device according to claim 3, characterized in that: Each of the heating mechanisms (16) includes a connecting pipe (161) fixedly arranged between the heating box (15) and the reversing box (9), and the interior of the reversing box (9) and the interior of the heating box (15) are both provided with a first normally closed solenoid valve (162) connected to the trigger switch (144), and an exhaust hose (163) corresponding to the position of the first normally closed solenoid valve (162) on the same side is fixed to the side wall of the heating box (15), and the exhaust hose (163) is connected to the slot plate (3), and a plurality of electric heating rods (164) are fixedly arranged inside the heating box (15).

5. A switch testing device according to claim 4, characterized in that: The plug-in / out test mechanism (17) includes a shunt pipe (171) fixedly arranged between the barrel (10) and the heating box (15), and a second normally closed solenoid valve (172) corresponding to the position of the shunt pipe (171) is provided inside the heating box (15); a hollow block (173) communicating with the inside of the barrel (10) is provided on the barrel wall of the barrel (10), and a first round plug (174) is slidably provided inside the hollow block (173); a second spring (175) is provided between the first round plug (174) and the hollow block (173); a second pressure switch (176) is fixedly provided on the inner wall of the hollow block (173), and a second indicator light (177) connected to the second pressure switch (176) is provided on the side wall of the test bench (1); an exhaust hole (178) is opened at the barrel end of the barrel (10), and a third normally closed solenoid valve (179) communicating with the exhaust hole (178) is provided on the outer side of the barrel end of the barrel (10).

6. A switch testing device according to claim 5, characterized in that: The gas collection timing mechanism (24) includes a cavity (241) opened inside the test bench (1), and an insulating pad (242) is fixed to the cavity wall of the cavity (241), and a conductive plate (243) is fixed to the end face of the insulating pad (242), an insulating movable block (244) is movably provided on the lower side of the interior of the cavity (241), and a movable conductive block (245) is fixed on the top of the insulating movable block (244), an air cavity (246) is opened at a position on one side of the cavity (241) inside the test bench (1), and a second round plug (247) is slidably provided inside the air cavity (246), and the first A push rod (248) is fixed between the second round plug (247) and the insulating movable block (244), a third spring (249) is fixed between the second round plug (247) and the side wall of the air cavity (246), a slow-release vent (2410) is provided on the lower cavity wall of the air cavity (246), a connecting hole (2411) is provided on the cavity wall of the cavity (241), and a second normally open solenoid valve (2412) connected to the trigger switch (144) is provided inside the connecting hole (2411), and an inflation hose (2413) is connected to the connecting hole (2411) and the hollow plate (6).

7. A switch testing device according to claim 6, characterized in that: The end face of the test bench (1) is fixed with a frame (26), and the end face of the frame (26) is fixedly plugged with a crimping cylinder (27), and the output end of the crimping cylinder (27) is fixedly connected to the end face of the slot plate (3).

8. The method for using a switch testing device according to claim 7, wherein: The method comprises the following steps: S1. Position the switch body (2) on the end face of the test bench (1), so that the plug-in port of the switch body (2) is located on one side of the hollow plate (6), and the crimping cylinder (27) is operated to stably crimp the slot plate (3) onto the switch body (2), and connect the external test communication device to the corresponding crystal plug (11) through the cable (12); S2, then starting the test work through the controller (25), after observing that each first indicator light (136) is lit, starting to send information through the external test communication sending device, and the external test communication receiving device receives the information; S3. After the communication and receiving information test is started, the communication test in a high temperature environment can be performed through the external test communication equipment. If the buzzer (23) does not sound within a waiting time of more than 3 minutes, it means that the heat conduction performance of the switch body (2) is poor and the heat dissipation performance cannot meet the use requirements. At this time, the entire test can be stopped. If the buzzer (23) sounds, it means that the heat dissipation performance of the switch body (2) can meet the use requirements. S4. In step S3, the buzzer (23) sounds, and the tester controls the buzzer (23) to stop working through the controller (25). Then, the tester observes that all the first indicator lights (136) and the second indicator lights (177) on the same side are all lit, indicating that the anti-dropout performance of the corresponding plug-in port on the switch body (2) is qualified. If the corresponding first indicator light (136) goes out before the second indicator light (177) is lit, it indicates that the anti-dropout performance of the corresponding plug-in port on the switch body (2) is unqualified. S5. After the anti-dropout performance test of each plug-in port is completed, each electric control component can be controlled to reset through the reset button of the controller (25). Then, after the switch body (2) that has completed the test is taken out, the next switch body (2) can be tested.

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