A switch testing apparatus and method

Abstract

The application belongs to the technical field of switch testing, and particularly relates to a switch testing device and method, which comprises a testing table and a switch body. The switch body is arranged on the end face of the testing table. A groove plate is arranged above the switch body and covers the outside of the heat dissipation holes of the switch body. The end face of the testing table is fixed with a side plate, and the side wall of the side plate is fixed with an electric push rod. The application can not only simulate the working performance of the switch body in a high-temperature environment, but also test the heat conduction and heat dissipation performance of the switch body to ensure that the heat dissipation efficiency of the switch can meet the use. The application can simulate the working performance of the switch in an external electromagnetic interference environment, and can insert multiple crystal plugs into corresponding plug-in ports at one time without affecting each other, has good plug-in effect, and can test the anti-dropping performance between the switch and the crystal plug.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of switch testing, and particularly relates to a switch testing device and method. BACKGROUND

[0002] A switch is a device for completing information exchange in a communication system, and an industrial switch is an indispensable communication device in industrial production. In order to ensure the quality of the switch after production, the switch product needs to be tested.

[0003] During use, the industrial switch needs to work for a long time and is connected to communication through multiple ports, which can cause the switch to generate a large working temperature. Therefore, the switch is placed in a machine room, and the temperature and humidity in the machine room can be controlled to ensure that the switch works in a stable environment. Therefore, when the industrial switch is tested, the working performance of the industrial switch in a high-temperature environment is generally simulated (for example, a switch automatic testing device and testing method disclosed in patent publication No. CN106789423A).

[0004] Because the material and thickness of the switch body are different, and some switch bodies are plated with paint on the surface, the thickness and material of the paint can affect the heat conduction performance of the switch body, thereby affecting the heat dissipation efficiency of the switch. The machine room only maintains the stability of the overall temperature environment in the room, and therefore, the heat dissipation performance of the switch itself also needs to be considered to ensure that the switch works at an appropriate temperature. If the heat dissipation performance of the switch itself is poor, the possibility that the internal temperature of the switch cannot be reduced in time exists. The switch still has the phenomenon of unstable working condition when working in a high-temperature environment for a long time. Only short-time simulation test in a high-temperature environment can cause the test result to be not comprehensive enough. SUMMARY

[0005] The present application aims at the above problems, and provides a switch testing device and method.

[0006] In order to achieve the above object, the following technical scheme is adopted: A switch testing device, comprising a testing table and a switch body, the switch body is arranged on the end face of the testing table, a groove plate is arranged above the switch body, and the groove plate covers the outside of the heat dissipation hole of the switch body, a side plate is fixed on the end face of the testing table, an electric push rod is fixed on the side wall of the side plate, a hollow plate is fixed on the output end of the electric push rod, an air pump is communicated with the side wall of the hollow plate, a plurality of fixed pipes are inserted into the side wall of the hollow plate, a reversing box is fixed on the pipe end of each fixed pipe, a machine cylinder is fixed on the side wall of each reversing box, a crystal plug is arranged in each machine cylinder, a cable is arranged on each crystal plug, each cable is slidably connected with the end of the same side machine cylinder, each crystal plug is connected with the reversing box through an automatic plug-in mechanism, a trigger switching mechanism is arranged in each machine cylinder and matched with the automatic plug-in mechanism, a heating box is arranged on one side of each machine cylinder, and the heating box and the same side reversing box are connected with the groove plate through a heating mechanism, and a plug-in test mechanism is connected between each heating box and the same side machine cylinder.

[0007] A groove is arranged on the end face of the testing table, two insulating columns are fixed in the groove, a thermistor is fixed between the two insulating columns, a plurality of temperature sensing contacts are fixed on the end face of the thermistor, each temperature sensing contact is arranged in abutment with the lower end of the switch body, an electromagnetic switch and a buzzer are fixed on the end face of the testing table and connected with each other, the electromagnetic switch is connected with the thermistor through a gas collecting timing mechanism, and a controller is fixed on the side wall of the testing table.

[0008] Preferably, each automatic plug-in mechanism comprises a piston block fixedly sleeved on the outer side wall of the crystal plug, the piston block is slidably arranged in the same side machine cylinder, a first spring and a flexible film sleeve are arranged between the piston block and the inner bottom of the machine cylinder, the first spring and the flexible film sleeve are arranged on the outside of the cable, a pressing block matched with the crystal plug is fixed on the end of the inner wall of the machine cylinder away from the hollow plate, a first pressure switch is fixed on the side wall of the pressing block, a first indicator lamp connected with the first pressure switch is fixed on the side wall of the testing table, and an air inlet hole is arranged on the side wall of the machine cylinder, and a first normally open electromagnetic valve matched with the air inlet hole is arranged in the reversing box.

[0009] Preferably, each trigger switching mechanism comprises a T-shaped groove arranged on the inner wall of the machine cylinder, the T-shaped groove is arranged corresponding to the position of the same side first spring, a T-shaped piston is slidably arranged in the T-shaped groove, an annular elastic pad is arranged between the end face of the T-shaped piston and the groove bottom of the T-shaped groove, a trigger switch is fixed on the groove bottom of the T-shaped groove, and the first normally open electromagnetic valve is connected with the trigger switch.

[0010] Preferably, each of the heating mechanisms comprises a connecting pipe fixed between the heating box and the reversing box, and the inside of the reversing box and the inside of the heating box are provided with a first normally closed electromagnetic valve connected with the trigger switch, the sidewall of the heating box is fixed with an exhaust hose corresponding to the position of the first normally closed electromagnetic valve on the same side, and the exhaust hose is in communication with the groove plate, and the inside of the heating box is fixed with a plurality of electric heating rods.

[0011] Preferably, the plug and socket test mechanism comprises a shunt pipe fixed between the machine barrel and the heating box, and the inside of the heating box is provided with a second normally closed electromagnetic valve corresponding to the position of the shunt pipe, the barrel wall of the machine barrel is provided with a hollow block in communication with the inside of the machine barrel, and the inside of the hollow block is slidably provided with a first round plug, and the first round plug and the hollow block are jointly provided with a second spring, the inner wall of the hollow block is fixedly provided with a second pressure switch, and the sidewall of the test bench is provided with a second indicator lamp connected with the second pressure switch, and the barrel end of the machine barrel is provided with an exhaust hole, and the outside of the barrel end of the machine barrel is provided with a third normally closed electromagnetic valve in communication with the exhaust hole.

[0012] Preferably, the gas collecting timing mechanism comprises a cavity opened in the inside of the test bench, and the cavity wall is fixed with an insulating pad, the end surface of the insulating pad is fixed with a conductive plate, the inside of the cavity is movably provided with an insulating movable block on the lower side, and the top of the insulating movable block is fixed with a movable conductive block, a gas cavity is opened in the inside of the test bench on one side of the cavity, and a second round plug is slidably arranged in the inside of the gas cavity, and the second round plug and the insulating movable block are jointly fixed with a top rod, the second round plug and the sidewall of the gas cavity are jointly fixed with a third spring, a slow-release air hole is opened in the lower cavity wall of the gas cavity, a communication hole is opened in the cavity wall of the cavity, and the inside of the communication hole is provided with a second normally open electromagnetic valve connected with the trigger switch, and the communication hole and the hollow plate are jointly connected with an inflation hose.

[0013] Preferably, the end surface of the test bench is fixed with a rack, and the end surface of the rack is fixedly connected with a crimping air cylinder, and the output end of the crimping air cylinder is fixedly connected with the end surface of the groove plate.

[0014] A method for using the switch test device, the method comprising the following steps:

[0015] S1, the switch body is positioned and placed on the end surface of the test bench, so that the plug-in port of the switch body is located on one side of the hollow plate, and the groove plate is stably crimped on the switch body by the working of the crimping air cylinder, and the external test communication equipment is connected with the corresponding crystal plug through the cable;

[0016] S2, then start the test work through the controller, after observing that each first indicator light is on, start sending information through the external test communication sending equipment, and receive information by the external test communication receiving equipment;

[0017] S3, after the test of communicating and receiving information is started, the communication test in high temperature environment can be carried out through the external test communication equipment, if the buzzer does not work for more than 3 minutes, it indicates that the heat conduction performance of the switch body is poor and the heat dissipation performance cannot meet the use requirement, at this time the whole test can be stopped, if the buzzer works, it indicates that the heat dissipation performance of the switch body can meet the use;

[0018] S4, in the step S3, the buzzer works, the test personnel controls the buzzer to stop working through the controller, then the personnel observes that all the first indicator lights on the same side and the second indicator lights on the same side are on, which indicates that the anti-dropping performance of the corresponding plug-in port on the switch body is qualified, if the corresponding first indicator light is off before the second indicator light is on, it indicates that the anti-dropping performance of the corresponding plug-in port on the switch body is unqualified;

[0019] S5, after the anti-dropping performance test of each plug-in port is completed, the reset key of the controller can be used to control the reset work of each electric control component, then the tested switch body can be taken out, and the test of the next switch body can be carried out.

[0020] Compared with the prior art, the switch test device and method has the advantages that:

[0021] 1. The test table is arranged to place the switch body to be tested, and the groove plate, side plate, electric push rod, hollow plate, air pump, fixed pipe, reversing box, machine cylinder, crystal plug, line and automatic plug-in mechanism are arranged to cooperate with each other to insert the plurality of crystal plugs into the corresponding plug-in ports one by one without affecting each other, and the plug-in effect is good.

[0022] 2. The trigger switching mechanism, heating box and heating mechanism are arranged to cooperate with each other to automatically switch to the heating work after the crystal plug is inserted into the plug-in port of the switch body, simulate the high temperature working environment in the switch body, and test the working performance of the switch body in the high temperature environment, and the recess, insulating column, thermistor, temperature sensing contact, electromagnetic switch, buzzer and gas collecting timing mechanism are arranged to cooperate with each other to use the heat of the simulated high temperature environment to synchronously test the heat conduction performance of the switch body, so as to test and judge the heat dissipation performance of the switch body, to ensure that the heat dissipation performance of the switch body leaving the factory can meet the actual use, and the first normally open electromagnetic valve, first normally closed electromagnetic valve, second normally open electromagnetic valve, second normally closed electromagnetic valve and electromagnetic switch can also be arranged to simulate the working performance of the switch under the electromagnetic interference condition.

[0023] 3. The plug-in test mechanism is arranged, which can work in the simulated high temperature environment, and after the heat dissipation performance test is completed, the anti-dropping performance of each plug-in port of the switch body is tested, so that the stability of the plug-in between the external network cable and the switch body can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a switch testing device and method provided by the application;

[0025] Figure 2 It is an internal structure schematic diagram of a machine cylinder of a switch testing device and method provided by the application;

[0026] Figure 3 It is an internal structure schematic diagram of a reversing box of a switch testing device and method provided by the application;

[0027] Figure 4 It is an internal structure schematic diagram of a heating box of a switch testing device and method provided by the application;

[0028] Figure 5 It is an internal structure schematic diagram of a hollow block of a switch testing device and method provided by the application;

[0029] Figure 6 It is an internal structure schematic diagram of a test table of a switch testing device and method provided by the application;

[0030] Figure 7 It is an internal structure schematic diagram of a groove plate of a switch testing device and method provided by the application.

[0031] In the figure: 1 test bench, 2 switch body, 3 groove plate, 4 side plate, 5 electric push rod, 6 hollow plate, 7 air pump, 8 fixed tube, 9 reversing box, 10 machine cylinder, 11 crystal plug, 12 cable, 13 automatic plug-in mechanism, 131 piston block, 132 first spring, 133 flexible film sleeve, 134 pressing block, 135 first pressure switch, 136 first indicator light, 137 air inlet hole, 138 first normally open electromagnetic valve, 14 trigger switching mechanism, 141 T-shaped groove, 142 T-shaped piston, 143 annular elastic pad, 144 trigger switch, 15 heating box, 16 heating mechanism, 161 connecting pipe, 162 first normally closed electromagnetic valve, 163 exhaust hose, 164 electric heating rod, 17 plug-in test mechanism, 171 shunt pipe, 172 second normally closed electromagnetic 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 electromagnetic valve, 18 recess, 19 insulating column, 20 thermistor, 21 temperature sensing contact, 22 electromagnetic switch, 23 buzzer, 24 gas collection 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 top rod, 249 third spring, 2410 slow-release air vent, 2411 communication hole, 2412 second normally open electromagnetic valve, 2413 inflation hose, 25 controller, 26 rack, 27 crimping air cylinder. DETAILED DESCRIPTION

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0033] As Figures 1-7 shown, a switch test 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 groove plate 3 is arranged above the switch body 2, and the groove plate 3 covers 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, the end face of the rack 26 is plugged with a crimping air cylinder 27, and the output end of the crimping air cylinder 27 is fixedly connected with the end face of the groove plate 3. Through the cooperation of the groove plate 3 and the crimping air cylinder 27, the switch body 2 can be stably fixed on the test bench 1, wherein the area of the groove 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 to be located inside the groove plate 3, and a pressure tube should also be arranged on the groove plate 3, a pressure valve is arranged in the pressure tube, and the pressure valve is used to discharge excess air inside the switch body 2.

[0034] The end face of the test table 1 is fixed with the side plate 4, and the side wall of the side plate 4 is fixed with the electric push rod 5, and the output end of the electric push rod 5 is fixed with the hollow plate 6, the side wall of the hollow plate 6 is communicated with the air pump 7, the side wall of the hollow plate 6 is fixedly inserted with a plurality of fixed pipes 8, and the pipe 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 machine barrel 10, and the inside of each machine barrel 10 is provided with a crystal plug 11, each crystal plug 11 is provided with a cable 12, and each cable 12 is slidably connected with the end of the same side machine barrel 10, the other end of the cable 12 can be connected with external test communication equipment (such as multiple computers), and the working performance of the switch such as communication delay and packet loss can be measured by the test equipment for information data transmission and reception. The test method by the test communication equipment is a mature technology, so it is not described in detail.

[0035] Each crystal plug 11 is connected with the reversing box 9 and is provided with an automatic plug-in mechanism 13, each automatic plug-in mechanism 13 comprises a piston block 131 fixedly sleeved on the outer side wall of the crystal plug 11, and the piston block 131 is slidably arranged in the inside of the same side machine barrel 10, the piston block 131 and the inner bottom of the machine barrel 10 are jointly provided with a first spring 132 and a flexible membrane sleeve 133, and the first spring 132 and the flexible membrane sleeve 133 are located outside the cable 12, the end of the inner wall of the machine barrel 10 away from the hollow plate 6 is fixed with a pressure block 134 matched with the crystal plug 11, and the side wall of the pressure block 134 is fixed with a first pressure switch 135, the side wall of the test table 1 is fixed with a first indicating lamp 136 connected with the first pressure switch 135, the side wall of the machine barrel 10 is provided with an air inlet hole 137, and the inside of the reversing box 9 is provided with a first normally open electromagnetic valve 138 matched with the air inlet hole 137. The flexible membrane sleeve 133 can prevent the air entering the inside of the machine barrel 10 from leaking through the connection between the cable 12 and the machine barrel 10. The first normally open electromagnetic valve 138 is closed after being energized, and is kept open when not energized.

[0036] The inside of each machine barrel 10 is provided with a trigger switching mechanism 14 matched with the automatic plug-in mechanism 13, each trigger switching mechanism 14 comprises a T-shaped groove 141 formed in the inner wall of the machine barrel 10, and the T-shaped groove 141 is arranged corresponding to the position of the same side first spring 132, the inside of the T-shaped groove 141 is slidably provided with a T-shaped piston 142, and the end face of the T-shaped piston 142 and the groove bottom of the T-shaped groove 141 are jointly provided with an annular elastic pad 143, the groove bottom of the T-shaped groove 141 is fixed with a trigger switch 144, and the first normally open electromagnetic valve 138 is connected with the trigger switch 144. The T-shaped piston 142 is composed of a circular block, a piston sleeve and a vertical rod. The trigger switch 144 is a pressure switch. After being extruded, the moving contact is closed. After the extrusion force disappears, the moving contact will rebound and recover under the action of the elastic element in the trigger switch 144.

[0037] Each heating box 15 is provided on one side of each barrel 10, and each heating box 15 and the same side reversing box 9 are connected with the groove plate 3 together with a heating mechanism 16, each heating mechanism 16 includes a connecting pipe 161 fixedly arranged between the heating box 15 and the reversing box 9, and the inside of the reversing box 9 and the inside of the heating box 15 are provided with a first normally closed electromagnetic valve 162 connected with the trigger switch 144, the side wall of the heating box 15 is fixed with an exhaust hose 163 corresponding in position to the same side first normally closed electromagnetic valve 162, and the exhaust hose 163 is arranged in communication with the groove plate 3, a plurality of electric heating rods 164 are fixedly arranged in the inside of the heating box 15, the first normally closed electromagnetic valve 162 is in an open state after being powered on, and remains in a closed state after being powered off, and the heating temperature of the plurality of electric heating rods 164 is 80℃.

[0038] Each heating box 15 and the same side barrel 10 are connected with a plug-in test mechanism 17, the plug-in test mechanism 17 includes a shunt pipe 171 fixedly arranged between the barrel 10 and the heating box 15, and the inside of the heating box 15 is provided with a second normally closed electromagnetic valve 172 corresponding in position to the shunt pipe 171, the barrel wall of the barrel 10 is provided with a hollow block 173 in communication with the inside of the barrel 10, and the inside of the hollow block 173 is slidably provided with a first round plug 174, the first round plug 174 and the hollow block 173 are jointly provided with a second spring 175, the inner wall of the hollow block 173 is fixedly provided with a second pressure switch 176, and the side wall of the test bench 1 is provided with a second indicating lamp 177 connected with the second pressure switch 176, the barrel end of the barrel 10 is provided with an exhaust hole 178, and the outside of the barrel end of the barrel 10 is provided with a third normally closed electromagnetic valve 179 in communication with the exhaust hole 178, the plug-in port of the exchange body 2 is provided with a groove matched with the check buckle on the crystal plug 11, the resistance of the groove and the check buckle can prevent the crystal plug 11 from being pulled out, and in the case that the plug-in port has good anti-pulling-out performance, the second pressure switch 176 will make the second indicating lamp 177 work, at this time, it indicates that the anti-pulling-out performance of the exchange body 2 can meet the use, otherwise, it cannot meet the use requirement;

[0039] The end face of the test table 1 is provided with a groove 18, and two insulating columns 19 are fixed in the groove 18, and a thermistor 20 is fixed between the two insulating columns 19, and a plurality of temperature sensing contacts 21 are fixed on the end face of the thermistor 20, each temperature sensing contact 21 is arranged in abutment with the lower end of the switch body 2, the end face of the test table 1 is fixed with an electromagnetic switch 22 and a buzzer 23 connected with each other, the electromagnetic switch 22 is connected with the thermistor 20 and a gas collecting timing mechanism 24, the side wall of the test table 1 is fixed with a controller 25, the gas collecting timing mechanism 24 comprises a cavity 241 opened in the test table 1, and an insulating pad 242 is fixed on the cavity wall of the cavity 241, an electrically conductive plate 243 is fixed on the end face of the insulating pad 242, an insulating movable block 244 is movably arranged on the inside lower side of the cavity 241, and an active electrically conductive block 245 is fixed on the top of the insulating movable block 244, a gas cavity 246 is opened on one side of the test table 1 inside the cavity 241, a second round plug 247 is slidably arranged in the gas cavity 246, and a top 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 gas cavity 246, a slow-release air hole 2410 is opened on the lower cavity wall of the gas cavity 246, a communication hole 2411 is opened on the cavity wall of the cavity 241, and a second normally open electromagnetic valve 2412 connected with the trigger switch 144 is arranged in the communication hole 2411, the communication hole 2411 is connected with the hollow plate 6 through a gas filling hose 2413, the upper end of the active electrically conductive block 245 is higher than the lower end of the electrically conductive plate 243, and an inclined bevel is opened on the side wall of the active electrically conductive block 245 close to the electrically conductive plate 243, for smooth transition of the active electrically conductive block 245 and the electrically conductive plate 243.

[0040] The operation principle of the application is described as follows: the switch body 2 is positioned and placed on the end face of the test table 1, the plug-in ports of the switch body 2 are located on one side of the hollow plate 6, the groove plate 3 is stably pressed on the switch body 2 by the pressing cylinder 27, the groove plate 3 covers the outside of the heat dissipation holes of the switch body 2, the external test communication equipment is connected with the corresponding crystal plug 11 through the cable 12, then the test work is started by the controller 25, the electric push rod 5 and the air pump 7 start to work, the electric push rod 5 works for 2 seconds, at this time, each cylinder 10 is tightly abutted with the side wall of the switch body 2, the air pump 7 works, the air is transported into each cylinder 10 through the fixed pipe 8, the first normally open electromagnetic valve 138 in each reversing box 9 and each air inlet hole 137, and the air is transported into the air cavity 246 through the inflation hose 2413, the communication hole 2411 and the second normally open electromagnetic valve 2412 in the test table 1, with the increase of the air pressure in the cylinder 10, each crystal plug 11 moves along the same side piston block 131, and cooperates with the abutting block 134 to be inserted into the corresponding plug-in port of the switch body 2, at this time, the moving contact of the first pressure switch 135 is pressed to trigger, so that the first indicating lamp 136 is electrified to work, after observing that each first indicating lamp 136 is bright, it indicates that each crystal plug 11 is stably inserted into the plug-in port of the switch body 2, at the same time, the second round plug 247 in the air cavity 246 is also moved by the top rod 248 under the action of the air pressure, so that the movable conductive block 245 is in contact with the lower end of the conductive plate 243, at this time, the external test communication sending equipment starts to send information, and the external test communication receiving equipment receives the information;

[0041] After the test of communication information sending and receiving starts, the air pressure in the cylinder 10 continues to increase, so as to push the T-shaped piston 142 to move upwards, at this time, the moving contact of the trigger switch 144 is pressed by the T-shaped piston 142, so that the controller 25 controls the first normally open electromagnetic valve 138 in each reversing box 9 and the second normally open electromagnetic valve 2412 in the test table 1 to be electrified to close, and controls the first normally closed electromagnetic valve 162 in the two reversing boxes 9 and the heating box 15 to be electrified to open, and controls each electric heating rod 164 in the heating box 15 to be electrified to work, at this time, the air discharged from the hollow plate 6 enters the inside of the groove plate 3 through the reversing box 9, the connecting pipe 161, the heating box 15, the two first normally closed electromagnetic valves 162 and the exhaust hose 163, and enters the inside of the switch body 2 through the heat dissipation holes of the switch body 2, the heating temperature of each electric heating rod 164 is 80℃, so that the inside of the switch body 2 is in a high temperature environment, at this time, the external test communication equipment can perform the communication test in the high temperature environment;

[0042] Meanwhile, the temperature inside the switch body 2 will be conducted and dissipated outwardly through the body, and the transferred temperature is transmitted to the thermistor 20 through the temperature sensing contacts 21. As the temperature is transmitted and increased, the resistance of the thermistor 20 becomes lower and lower. At this time, the current flowing into the electromagnetic switch 22 is enough to trigger the moving contact of the electromagnetic switch 22 to close. Since the second normally open electromagnetic valve 2412 in the test table 1 is energized to close, the air inside the air chamber 246 will slowly be discharged through the slow-release air hole 2410. Under the action of the third spring 249, the second round plug 247 will drive the ejector 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 245 to move back and disengage 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. When the waiting time is greater than 3 minutes, since the movable conductive block 245 is disengaged from the conductive plate 243, the thermistor 20 cannot control the buzzer 23 to work through the electromagnetic switch 22. Therefore, if the buzzer 23 does not work, it indicates 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 whole test can be stopped. If the buzzer 23 works, it indicates that the heat dissipation performance of the switch body 2 can meet the use requirements.

[0043] Under the premise of the buzzing work of the buzzer 23, the tester controls the buzzer 23 to stop working through the controller 25, controls the first normally open electromagnetic valve 138, the second normally open electromagnetic valve 2412 and the first normally closed electromagnetic valve 162 on the heating box 15 to keep closed state through the controller 25, and controls the second normally closed electromagnetic valve 172 in the heating box 15 and the third normally closed electromagnetic valve 179 on the machine barrel 10 to keep open state, at this time, the air delivered by the air pump 7 will enter the machine barrel 10 through the hollow plate 6, the fixed pipe 8, the reversing box 9, the connecting pipe 161, the heating box 15 and the shunt pipe 171, with the increase of the delivered gas, the air pressure in the machine barrel 10 increases, under normal circumstances, the excess air will enter the hollow block 173, and push the first round plug 174 to move until the second pressure switch 176 is triggered, at this time, the second indicator light 177 is electrified and works, since each crystal plug 11 is automatically inserted, the first pressure switch 135 is pressed and triggered by the piston block 131, so the first indicator light 136 has been turned on, therefore, as long as the personnel observes that the first indicator light 136 and the second indicator light 177 on the test bench 1 are all turned on, it indicates that the anti-dropping performance of the corresponding plug-in port on the switch body 2 is qualified, if the anti-dropping performance of the plug-in port of the switch body 2 is unqualified, since the air pressure in the machine barrel 10 increases, it will push the piston block 131 to move back with the crystal plug 11, at this time, since the extrusion 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 to the reset position under the action of the elastic element itself, at this time, the first indicator light 136 is turned off, therefore, before the second indicator light 177 is turned on, the corresponding first indicator light 136 is turned off, which indicates that the anti-dropping performance of the corresponding plug-in port on the switch body 2 is unqualified, after the anti-dropping performance test of each plug-in port is completed, the reset button of the controller 25 can be used to control the reset work of each electric control component, then the switch body 2 tested is taken out, and the test of the next switch body 2 can be carried out.

[0044] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A switch testing device, comprising a test bench (1) and a switch body (2), characterized in that, The switch body (2) is located 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 provided on the outside of the heat dissipation holes of the switch body (2). A side plate (4) is fixed on the end face of the test bench (1), and an electric push rod (5) is fixed on the side wall of the side plate (4). A hollow plate (6) is fixed on the output end of the electric push rod (5). An air pump (7) is connected to the side wall of the hollow plate (6). Multiple fixed pipes (8) are fixedly inserted into the side wall of the hollow plate (6), and a commutator box (9) is fixed at the end of each fixed pipe (8). A machine cylinder (10) is fixed on the side wall of each commutator box (9), and each machine cylinder (10) is provided with a cavity inside. 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 same side barrel (10). Each crystal plug (11) is connected to the reversing box (9) with an automatic plug-in mechanism (13). Each barrel (10) is provided with a trigger switching mechanism (14) that cooperates with the automatic plug-in mechanism (13). Each barrel (10) is provided with a heating box (15) on one side. Each heating box (15) and the same side reversing box (9) are connected to the slot plate (3) with a heating mechanism (16). Each heating box (15) and the same side barrel (10) are connected with a plug-in test mechanism (17). The end face of the test bench (1) is provided with a groove (18), and two insulating pillars (19) are fixed inside the groove (18). A thermistor (20) is fixed between the two insulating pillars (19), and multiple temperature-sensing contacts (21) are fixed on the end face of the thermistor (20). Each temperature-sensing contact (21) is set against the lower end of the switch body (2). An electromagnetic switch (22) and a buzzer (23) connected to each other are fixed on the end face of the test bench (1). The electromagnetic switch (22) and the thermistor (20) are connected to a gas collection timing mechanism (24). A controller (25) is fixed on the side wall of the test bench (1). Through the cooperation of the slot plate (3), side plate (4), electric push rod (5), hollow plate (6), air pump (7), fixed pipe (8), reversing box (9), barrel (10), crystal plug (11), cable (12) and automatic plug-in mechanism (13), multiple crystal plugs (11) are inserted into the corresponding plug-in ports on the switch body (2) at one time. Through the cooperation of the trigger switching mechanism (14), heating box (15) and heating mechanism (16), after the crystal plug (11) is inserted into the plug-in port of the switch body (2), it automatically... The switch is switched to heat operation to simulate the high-temperature working environment inside the switch body (2). Through the cooperation of groove (18), insulating column (19), thermistor (20), temperature sensing contact (21), electromagnetic switch (22), buzzer (23) and gas collection timing mechanism (24), the heat of the high-temperature environment is simulated to test the heat dissipation performance of the switch body (2). Through the plug-in test mechanism (17), the switch body (2) is tested for anti-disconnection performance under simulated high-temperature environment and after the heat dissipation performance test is completed.

2. The switch testing device according to claim 1, characterized in that, Each of the aforementioned automatic insertion mechanisms (13) includes a piston block (131) fixedly sleeved on the outer wall of the crystal plug (11), and the piston block (131) is slidably disposed inside the same side of the barrel (10). A first spring (132) and a flexible diaphragm sleeve (133) are provided together with the inner bottom of the barrel (10), and the first spring (132) and the flexible diaphragm sleeve (133) are both located on the outside of the cable (12). The inner wall of the barrel (10) away from the hollow plate (6) is fixed with a pressing block (134) that matches the crystal plug (11), and the side wall of the pressing block (134) is fixed with a first pressure switch (135). The side wall of the test platform (1) is fixed with a first indicator light (136) connected to the first pressure switch (135). The side wall of the barrel (10) is provided with an air inlet (137), and the inside of the reversing box (9) is provided with a first normally open solenoid valve (138) that cooperates with the air inlet (137).

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

4. The switch testing device according to claim 3, characterized in that, Each of the heating mechanisms (16) includes a connecting pipe (161) fixedly disposed 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). The side wall of the heating box (15) is fixed with an exhaust hose (163) corresponding to the position of the first normally closed solenoid valve (162) on the same side, and the exhaust hose (163) is connected to the slot plate (3). Multiple electric heating rods (164) are fixedly disposed inside the heating box (15).

5. A switch testing device according to claim 4, characterized in that, The insertion and removal test mechanism (17) includes a diversion pipe (171) fixedly disposed between the barrel (10) and the heating box (15), and the heating box (15) is provided with a second normally closed solenoid valve (172) corresponding to the position of the diversion pipe (171). The barrel wall of the barrel (10) is provided with a hollow block (173) communicating with the inside of the barrel (10), and a first round plug (174) is slidably disposed 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 disposed 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 platform (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. The switch testing device according to claim 5, characterized in that, The gas collection timing mechanism (24) includes a cavity (241) opened inside the test platform (1), and an insulating pad (242) is fixed to the cavity wall of the cavity (241). 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 inside the cavity (241), and a movable conductive block (245) is fixed to the top of the insulating movable block (244). An air chamber (246) is opened inside the test platform (1) at one side of the cavity (241), and a second round plug (247) is slidably provided inside the air chamber (246). A push rod (248) is fixed between the two round plugs (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 chamber (246). The lower cavity wall of the air chamber (246) is provided with a slow-release vent hole (2410). The cavity wall of the cavity (241) is provided with a connecting hole (2411). The interior of the connecting hole (2411) is provided with a second normally open solenoid valve (2412) connected to the trigger switch (144). The connecting hole (2411) and the hollow plate (6) are connected together with an inflation hose (2413).

7. A switch testing device according to claim 6, characterized in that, The test bench (1) has a frame (26) fixed on its end face, and a pressing cylinder (27) is fixedly inserted into the end face of the frame (26), and the output end of the pressing cylinder (27) is fixedly connected to the end face of the slot plate (3).

8. The method of using the switch testing device according to claim 7, characterized in that, The method includes the following steps: S1. Position the switch body (2) on the end face of the test bench (1), so that the plug port of the switch body (2) is located on one side of the hollow plate (6), and the slot plate (3) is stably pressed onto the switch body (2) by the working of the pressing cylinder (27), and the external test communication equipment is connected to the corresponding crystal plug (11) through the cable (12). S2. Then, the test is started by the controller (25). After observing that each first indicator light (136) is lit, the external test communication sending device starts to send information and the external test communication receiving device receives the information. S3. After the communication and information transmission test begins, the communication test under high temperature environment can be carried out through the external test communication equipment. If the buzzer (23) does not sound within a waiting period of more than 3 minutes, it means that the heat conduction performance of the switch body (2) is not good and the heat dissipation performance cannot meet the usage 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) meets the usage requirements. S4. In step S3, the buzzer (23) sounded. The tester controlled the buzzer (23) to stop working through the controller (25). Then, the tester observed that all the first indicator lights (136) and the second indicator lights (177) on the same side were lit up. This indicates that the anti-disconnection performance of the corresponding plug-in port on the switch body (2) is qualified. If the corresponding first indicator light (136) is turned off before the second indicator light (177) is lit up, this indicates that the anti-disconnection performance of the corresponding plug-in port on the switch body (2) is unqualified. S5. After the anti-disconnection performance test of each plug-in port is completed, the reset button of the controller (25) can be used to control each electrical control component to perform the reset work. After the completed switch body (2) is taken out, the next switch body (2) can be tested.

Images