Switch machine testing device

Abstract

The utility model relates to a point switch testing device which comprises a mobile power supply device, a control display circuit and a testing circuit, and the mobile power supply device supplies power to the control display circuit and the testing circuit. The control display circuit is used for controlling the test circuit to test the positioning indication circuit, the anti-position indication circuit, the anti-operation fixed starting circuit and the fixed operation anti-starting circuit in the switch machine, and the test results of the positioning indication circuit and the anti-position indication circuit are displayed in real time, so that the test of the switch machine can be completed beside the outdoor switch machine; therefore, the test period can be effectively shortened, the test efficiency can be effectively improved, and potential safety hazards in the test process can be effectively reduced.

Description

Technical Field

[0001] The present application belongs to the field of traffic technology, and in particular relates to a switch machine testing device. Background Art

[0002] With the development of technology and the increase in population mobility, there are more and more trains. Turnouts are line connection equipment at the intersection of two tracks, which allows vehicles to switch to other tracks safely and smoothly. They are used at stations where the lines intersect. The position of the turnout is controlled by a switch machine. In order to facilitate the control of the turnout, the switch machine is generally installed next to the outdoor rails.

[0003] The switch machine often needs to be tested after installation or during use. The existing testing solution is that after the switch machine is installed and wired, the indoor power supply, control console, relays and cables must be installed before the switch machine can be tested through the cooperation of the indoor power supply, control console and relays. This results in a long test cycle. In addition, since the various devices are distributed in different locations, during the test, a dedicated person is required to operate the switch at the control console indoors, and a dedicated person is required to take protective measures outdoors. The test personnel need to run back and forth between the various devices, resulting in low test efficiency and safety hazards. Utility Model Content

[0004] The purpose of this application is to provide a switch machine testing device; the switch machine testing device provided in this application can effectively shorten the test cycle, effectively improve the test efficiency, and effectively reduce safety hazards during the test process.

[0005] The technical solutions provided in this application are as follows:

[0006] A switch machine testing device, comprising: a mobile power supply device, a control display circuit and a testing circuit;

[0007] The first output terminal of the mobile power supply device is connected to the input terminal of the control and display circuit and the first input terminal of the test circuit;

[0008] The output end of the control and display circuit is connected to the second input end of the test circuit;

[0009] The second output terminal and the third output terminal of the mobile power supply device are connected to the third input terminal and the fourth input terminal of the test circuit;

[0010] The output end of the test circuit is used to be connected to the input end of the switch machine;

[0011] The output end of the switch machine is used to connect with the turnout;

[0012] The mobile power supply device is used to supply power to the control and display circuit and the test circuit;

[0013] The control and display circuit is configured to receive a positioning instruction and send a positioning signal to the test circuit if the position of the switch is positioning, so that the test circuit is connected to the positioning indication circuit in the switch machine, and receive and display the test result of the positioning indication circuit according to the first test result signal sent by the test circuit;

[0014] The control and display circuit is further configured to receive a reverse position instruction if the position of the switch is reversed, send a reverse position signal to the test circuit, connect the test circuit with the reverse position indicating circuit in the switch machine, receive and display a test result of the reverse position indicating circuit based on a second test result signal sent by the test circuit;

[0015] The control and display circuit is further configured to receive a positioning instruction and send a positioning signal to the test circuit if the position of the switch is in the reverse position; receive a start instruction and send a start signal to the test circuit, so that the test circuit is connected to the reverse position start circuit in the switch machine, so that the switch machine controls the switch to switch from the reverse position to the position position when the reverse position start circuit is normal;

[0016] The control and display circuit is also used to receive a reverse position instruction and send a reverse position signal to the test circuit if the position of the switch is fixed, receive a start instruction and send a start signal to the test circuit, so that the test circuit is connected with the fixed operation reverse start circuit in the switch machine, so that the switch machine controls the switch to switch from fixed position to reverse position when the fixed operation reverse start circuit is normal.

[0017] Optionally, the test circuit includes: a first switch state relay, a second switch state relay, a third switch state relay, a position indication relay, a reverse position indication relay, a first start relay, a second start relay, a third start relay, a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal;

[0018] The first positive output terminal of the mobile power supply device is connected to the first input terminal to the fourth input terminal of the control and display circuit;

[0019] The first output terminal of the control and display circuit is connected to the front contact of the positioning indication relay;

[0020] The second output terminal of the control and display circuit is connected to the front contact of the reverse position indicating relay;

[0021] The third output terminal of the control and display circuit is connected to the first end of the coil of the first switch state relay to the third switch state relay;

[0022] The fourth output terminal of the control and display circuit is connected to the first end of the coil of the first starting relay to the third starting relay;

[0023] The first negative output terminal of the mobile power supply device is connected to the middle contact of the position indicating relay, the middle contact of the reverse position indicating relay, the second end of the coil of the first switch state relay to the third switch state relay, and the second end of the coil of the first start relay to the third start relay;

[0024] The second positive output terminal of the mobile power supply device is connected to the middle contact of the first starting relay;

[0025] The second negative output terminal of the mobile power supply device is connected to the middle contact of the third switch state relay;

[0026] The third A-phase output terminal, the third B-phase output terminal, and the third C-phase output terminal of the mobile power supply device are respectively connected to the front contact of the first starting relay, the front contact of the second starting relay, and the front contact of the third starting relay in a one-to-one correspondence;

[0027] A middle contact of the first starting relay is connected to a first end of the first terminal;

[0028] The middle contact of the second starting relay is connected to the middle contact of the first switch state relay;

[0029] The rear contact of the first turnout state relay is connected to the first end of the coil of the positioning indication relay and the first end of the fourth terminal;

[0030] The front contact of the first turnout state relay is connected to the first end of the second terminal;

[0031] The rear contact of the second starting relay is connected to the second end of the coil of the positioning indication relay and the front contact of the third switch state relay;

[0032] The rear contact of the third switch state relay is connected to the rear contact of the third start relay and the first end of the coil of the reverse position indicating relay;

[0033] The middle contact of the third starting relay is connected to the middle contact of the second switch state relay;

[0034] The rear contact of the second turnout state relay is connected to the first end of the third terminal;

[0035] The front contact of the second turnout state relay is connected to the second end of the coil of the reverse position indicating relay and the first end of the fifth terminal;

[0036] The second ends of the first terminal to the fifth terminal are used to be connected to the input end of the point switch machine.

[0037] Optionally, the control display circuit includes a position indicating light, a reverse position indicating light, a status button, a start button and a stop button;

[0038] The first positive output terminal of the mobile power supply device is connected to the first end of the positioning indicator light, the first end of the reverse position indicator light, the first end of the status button and the first end of the start button;

[0039] The second end of the positioning indication light is connected to the front contact of the positioning indication relay;

[0040] The second end of the reverse position indicating lamp is connected to the front contact of the reverse position indicating relay;

[0041] The second end of the state button is connected to the first end of the coil of the first switch state relay to the third switch state relay;

[0042] The second end of the start button is connected to the first end of the stop button;

[0043] The second end of the stop button is connected to the first ends of the coils of the first to third starter relays.

[0044] Optionally, the control and display circuit includes a controller;

[0045] The first positive output terminal of the mobile power supply device is connected to the first input terminal to the fourth input terminal of the controller;

[0046] The first output terminal of the controller is connected to the front contact of the positioning indication relay;

[0047] The second output terminal of the controller is connected to the front contact of the reverse position indicating relay;

[0048] The third output terminal of the controller is connected to the first end of the coil of the first switch state relay to the third switch state relay;

[0049] The fourth output terminal of the controller is connected to the first ends of the coils of the first starting relay to the third starting relay.

[0050] Optionally, the state button is a non-self-resetting button, the start button and the stop button are self-resetting buttons, and the test circuit further includes: a phase failure protector and a self-closing relay;

[0051] The first contact of the phase protection device is connected to the third A-phase output terminal of the mobile power supply device and the front contact of the first starting relay;

[0052] The second contact of the phase protection device is connected to the third B-phase output terminal of the mobile power supply device and the front contact of the second starting relay;

[0053] The third contact of the phase protection device is connected to the third C-phase output terminal of the mobile power supply device and the front contact of the third starting relay;

[0054] The front contact of the self-closing relay is connected to the first positive output terminal of the mobile power supply device;

[0055] The first end of the stop button is connected to the middle contact of the self-closing relay and the second end of the start button;

[0056] The second end of the stop button is connected to the fifth contact of the phase protector;

[0057] The sixth contact of the phase protection device is connected to the first end of the coil of the first starting relay to the third starting relay and the first end of the coil of the self-closing relay;

[0058] The second ends of the coils of the first starting relay to the third starting relay and the second end of the coil of the self-closing relay are connected to the first negative output end of the mobile power supply device.

[0059] Optionally, the test circuit further comprises: a first circuit breaker, a second circuit breaker and a third circuit breaker;

[0060] The first end of the first circuit breaker is connected to the third A-phase output end of the mobile power supply device;

[0061] The second end of the first circuit breaker is connected to the first contact of the phase protector and the front contact of the first starting relay;

[0062] The first end of the second circuit breaker is connected to the third B-phase output end of the mobile power supply device;

[0063] The second end of the second circuit breaker is connected to the second contact of the phase protector and the front contact of the second starting relay;

[0064] The first end of the third circuit breaker is connected to the third C-phase output end of the mobile power supply device;

[0065] The second end of the third circuit breaker is connected to the third contact of the phase protector and the front contact of the third starting relay.

[0066] Optionally, the test circuit further includes: a current limiting resistor;

[0067] The first end of the current limiting resistor is connected to the second negative output end of the mobile power supply device;

[0068] The second end of the current-limiting resistor is connected to the middle contact of the third switch state relay.

[0069] Optionally, the mobile power supply device comprises: a mobile power supply and a single-phase to three-phase converter;

[0070] The first positive output terminal of the mobile power supply is connected to the first end of the positioning indicator light, the first end of the reverse position indicator light, the first end of the status button, the first end of the start button, and the front contact of the self-closing relay;

[0071] The first negative output terminal of the mobile power supply is connected to the middle contact of the positioning indication relay, the middle contact of the reverse position indication relay, the second end of the coil of the first switch state relay to the third switch state relay, the second end of the coil of the first starting relay to the third starting relay, and the second end of the coil of the self-closing relay;

[0072] The second positive output terminal of the mobile power supply is connected to the middle contact of the first starting relay;

[0073] The second negative output terminal of the mobile power supply is connected to the middle contact of the third switch state relay;

[0074] The third positive output terminal and the third negative output terminal of the mobile power supply are respectively connected to the positive input terminal and the negative input terminal of the single-phase to three-phase converter;

[0075] The A-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the first circuit breaker;

[0076] The B-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the second circuit breaker;

[0077] The C-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the third circuit breaker.

[0078] Optionally, the controller is a programmable logic controller (PLC).

[0079] Compared with the prior art, the present application provides a switch machine testing device, comprising: a mobile power supply device, a control display circuit and a test circuit, the mobile power supply device being used to supply power to the control display circuit and the test circuit; the control display circuit being used to receive a positioning instruction, send a positioning signal to the test circuit if the position of the switch is in positioning, connect the test circuit with the positioning indication circuit in the switch, receive and display the test result of the positioning indication circuit according to the first test result signal sent by the test circuit; the control display circuit being used to receive a reverse position instruction, send a reverse position signal to the test circuit if the position of the switch is in reverse position, connect the test circuit with the reverse position indication circuit in the switch, receive and display the test result of the reverse position indication circuit according to the second test result signal sent by the test circuit; the control display circuit being used to receive a positioning instruction, send a positioning signal to the test circuit, receive a start instruction, send a start signal to the test circuit if the position of the switch is in reverse position, connect the test circuit with the reverse position indication circuit in the switch, The reverse operation fixed start circuit in the switch is connected, so that when the reverse operation fixed start circuit is normal, the switch controls the switch to switch from reverse position to position; the control display circuit is also used to receive the reverse position instruction, send the reverse position signal to the test circuit, receive the start instruction, and send the start signal to the test circuit if the position of the switch is position, so that the test circuit is connected with the fixed operation reverse start circuit in the switch, so that when the fixed operation reverse start circuit is normal, the switch controls the switch to switch from position to reverse position. In this application, the control display circuit and the test circuit are powered by a mobile power supply device, and the test circuit is controlled by the control display circuit to test the positioning indication circuit, reverse position indication circuit, reverse operation fixed start circuit and fixed operation reverse start circuit in the switch, and the test results of the positioning indication circuit and the reverse position indication circuit are displayed in real time, so that the test of the switch can be completed next to the outdoor switch, thereby effectively shortening the test cycle, effectively improving the test efficiency, and effectively reducing the safety hazards during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0081] Figure 1 This is a structural block diagram of a switch machine testing device disclosed in an embodiment of the present application;

[0082] Figure 2 A circuit diagram of a switch machine testing device disclosed in an embodiment of the present application;

[0083] Figure 3A circuit diagram of another switch machine testing device disclosed in an embodiment of the present application;

[0084] Reference numerals: 100 - mobile power supply device; 200 - control and display circuit; 300 - test circuit; 400 - switch machine; 500 - turnout;

[0085] 110-Mobile power supply; 120-Single-phase to three-phase converter;

[0086] DBD-position indicating light; FBD-reverse indicating light; ZA-status button; QA-start button; TA-stop button;

[0087] U1-controller;

[0088] ZM1-first turnout status relay; ZM2-second turnout status relay; ZM3-third turnout status relay; DBJ-position indication relay; FBJ-reverse position indication relay; QM1-first start relay; QM2-second start relay; QM3-third start relay; 05-1-first terminal; 05-2-second terminal; 05-3-third terminal; 05-4-fourth terminal; 05-5-fifth terminal; DBQ-phase failure protector; ZBM-self-closing relay; RD1-first circuit breaker; RD2-second circuit breaker; RD3-third circuit breaker; R1-current limiting resistor. DETAILED DESCRIPTION

[0089] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0090] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0091] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0093] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0094] like Figure 1 As shown, a switch machine test device includes: a mobile power supply device 100, a control and display circuit 200, and a test circuit 300; a first output end of the mobile power supply device 100 is connected to an input end of the control and display circuit 200 and a first input end of the test circuit 300; an output end of the control and display circuit 200 is connected to a second input end of the test circuit 300; a second output end and a third output end of the mobile power supply device 100 are connected to a third input end and a fourth input end of the test circuit 300; an output end of the test circuit 300 is used to connect to an input end of a switch machine 400; an output end of the switch machine 400 is used to connect to a switch 500; the mobile power supply device 100 is used to supply power to the control and display circuit 200 and the test circuit 300;

[0095] The control display circuit 200 is configured to receive a positioning instruction and send a positioning signal to the test circuit 300 if the position of the switch 500 is positioning, so as to connect the test circuit 300 with the positioning indication circuit in the switch machine 400, receive and display the test result of the positioning indication circuit according to the first test result signal sent by the test circuit 300;

[0096] In this embodiment, the output end of the test circuit 300 can be connected to the input end of the switch machine 400. After the output end of the switch machine 400 is connected to the switch 500, the display circuit in the switch machine 400 can be tested first. If the tester sees that the current position of the switch 500 is positioned before testing the display circuit in the switch machine 400, the tester can send a positioning instruction to the control display circuit 200 through the human-computer interaction interface or the status button ZA. After receiving the positioning instruction, the control display circuit 200 sends a positioning signal to the test circuit 300. After receiving the positioning signal, the test circuit 300 is connected to the switch. The positioning indication circuit in the machine 400 is connected and sends a first test result signal to the control and display circuit 200. The control and display circuit 200 receives and displays the test result of the positioning indication circuit through the human-computer interaction interface or the positioning display light according to the first test result signal sent by the test circuit 300. If the first test result signal received by the control and display circuit 200 is a normal signal for the positioning indication circuit, the human-computer interaction interface displays that the positioning indication circuit is normal or the positioning display light is on. If the first test result signal received by the control and display circuit 200 is a positioning indication circuit test abnormality signal, the human-computer interaction interface displays that the positioning indication circuit test is abnormal or the positioning display light is off.

[0097] The control and display circuit 200 is further configured to receive a reverse position instruction and send a reverse position signal to the test circuit 300 if the position of the switch 500 is reversed, thereby connecting the test circuit 300 with the reverse position indicating circuit in the switch machine 400, and receive and display a test result of the reverse position indicating circuit based on a second test result signal sent by the test circuit 300;

[0098] In this embodiment, if before testing the indication circuit in the switch 400, the tester sees that the current position of the switch 500 is in the reverse position, the tester can send a reverse position instruction to the control and display circuit 200 through the human-machine interface or the status button ZA. After receiving the reverse position instruction, the control and display circuit 200 sends a reverse position signal to the test circuit 300. After receiving the reverse position signal, the test circuit 300 is connected with the reverse position indication circuit in the switch 400 and sends a second test result signal to the control and display circuit 200. The control and display circuit 200 receives and displays the test result of the reverse position indication circuit through the human-machine interface or the reverse position display light based on the second test result signal sent by the test circuit 300. If the second test result signal received by the control and display circuit 200 is a normal test signal for the reverse position indication circuit, the human-machine interface displays that the reverse position indication circuit test is normal or the reverse position display light is on. If the second test result signal received by the control and display circuit 200 is an abnormal test signal for the reverse position indication circuit, the human-machine interface displays that the reverse position indication circuit test is abnormal or the reverse position display light is off.

[0099] The control and display circuit 200 is further configured to receive a positioning instruction and send a positioning signal to the test circuit 300 if the position of the switch 500 is in the reverse position; receive a start instruction and send a start signal to the test circuit 300, thereby connecting the test circuit 300 with the reverse position start circuit in the switch machine 400, so that the switch machine 400 controls the switch 500 to switch from the reverse position to the position when the reverse position start circuit is normal;

[0100] In this embodiment, after the test of the display circuit in the switch machine 400 is completed, the starting circuit in the switch machine 400 can be tested. If the tester sees that the current position of the switch 500 is reversed before testing the starting circuit in the switch machine 400, the tester can send a positioning instruction to the control and display circuit 200 through the human-computer interaction interface or the status button ZA. After receiving the positioning instruction, the control and display circuit 200 sends a positioning signal to the test circuit 300, so that the test circuit 300 changes its internal state to positioning after receiving the positioning signal. Then the tester sends a starting instruction to the control and display circuit 200, and the control and display circuit 200 turns on. 00 sends a start signal to the test circuit 300 after receiving the start command. After receiving the start signal, the test circuit 300 will be connected to the reverse control start circuit in the switch 400. The test circuit 300 sends the start signal to the reverse control start circuit in the switch 400. If the reverse control start circuit in the switch 400 is normal, it will control the switch 500 to switch from the reverse position to the fixed position. If the reverse control start circuit in the switch 400 is abnormal, it will not control the switch 500 to switch from the reverse position to the fixed position. The tester can determine whether the reverse control start circuit in the switch 400 is normal based on whether the switch 500 is switched from the reverse position to the fixed position.

[0101] The control display circuit 200 is also used to receive a reverse position instruction and send a reverse position signal to the test circuit 300 if the position of the switch 500 is fixed, receive a start instruction, and send a start signal to the test circuit 300, so that the test circuit 300 is connected with the fixed operation reverse start circuit in the switch machine 400, so that the switch machine 400 controls the switch 500 to switch from the fixed position to the reverse position when the fixed operation reverse start circuit is normal.

[0102] In this embodiment, if before testing the starting circuit in the switch machine 400, the tester sees that the current position of the switch 500 is positioned, the tester can send a reverse position instruction to the control display circuit 200 through the human-computer interaction interface or the status button ZA. After receiving the reverse position instruction, the control display circuit 200 sends a reverse position signal to the test circuit 300, so that the test circuit 300 changes its internal state to the reverse position after receiving the reverse position signal. Then the tester sends a start instruction to the control display circuit 200. After receiving the start instruction, the control display circuit 200 sends a start signal to the test circuit 300. Circuit 300. After receiving the start signal, the test circuit 300 will be connected to the fixed operation reverse start circuit in the switch machine 400. The test circuit 300 sends the start signal to the fixed operation reverse start circuit in the switch machine 400. If the fixed operation reverse start circuit in the switch machine 400 is normal, it will control the switch 500 to switch from the positioning position to the reverse position. If the fixed operation reverse start circuit in the switch machine 400 is abnormal, it will not control the switch 500 to switch from the positioning position to the reverse position. The tester can determine whether the fixed operation reverse start circuit in the switch machine 400 is normal based on whether the switch 500 is switched from the positioning position to the reverse position.

[0103] Compared with the prior art, the present application provides a switch machine test device, comprising: a mobile power supply device 100, a control display circuit 200 and a test circuit 300, wherein the mobile power supply device 100 is used to supply power to the control display circuit 200 and the test circuit 300; the control display circuit 200 is used to receive a positioning instruction if the position of the switch 500 is positioned, send a positioning signal to the test circuit 300, connect the test circuit 300 with the positioning indication circuit in the switch machine 400, receive and display the positioning indication circuit according to the first test result signal sent by the test circuit 300, and The control display circuit 200 is also used for receiving the reverse position instruction and sending the reverse position signal to the test circuit 300 if the position of the switch 500 is reversed, so that the test circuit 300 is connected to the reverse position indicating circuit in the switch machine 400, and receiving and displaying the test result of the reverse position indicating circuit according to the second test result signal sent by the test circuit 300; the control display circuit 200 is also used for receiving the positioning instruction and sending the positioning signal to the test circuit 300 if the position of the switch 500 is reversed, receiving the start instruction and sending the start signal to the test circuit 300, so that the test circuit 300 is connected to the reverse operation fixed start circuit in the switch machine 400, so that when the reverse operation fixed start circuit is normal, the switch machine 400 controls the switch 500 to switch from the reverse position to the fixed position; the control display circuit 200 is also used to receive the reverse position instruction and send the reverse position signal to the test circuit 300 if the position of the switch 500 is fixed, receive the start instruction, and send the start signal to the test circuit 300, so that the test circuit 300 is connected to the fixed operation reverse start circuit in the switch machine 400, so that when the fixed operation reverse start circuit is normal, the switch machine 400 controls the switch 500 to switch from the fixed position to the reverse position. In this application, The control and display circuit 200 and the test circuit 300 are powered by the mobile power supply device 100, and the test circuit 300 is controlled by the control and display circuit 200 to test the positioning indication circuit, the reverse position indication circuit, the reverse operation fixed start circuit and the fixed operation reverse start circuit in the switch machine 400, and the test results of the positioning indication circuit and the reverse position indication circuit are displayed in real time, so that the test of the switch machine 400 can be completed next to the outdoor switch machine 400, thereby effectively shortening the test cycle, effectively improving the test efficiency, and effectively reducing the safety hazards during the test process.

[0104] like Figure 2As shown, as an implementation method, in the embodiment of the present application, the test circuit 300 includes: a first switch state relay ZM1, a second switch state relay ZM2, a third switch state relay ZM3, a positioning indication relay DBJ, a reverse position indication relay FBJ, a first start relay QM1, a second start relay QM2, a third start relay QM3, a first terminal 05-1, a second terminal 05-2, a third terminal 05-3, a fourth terminal 05-4, and a fifth terminal 05-5; the first positive output terminal of the mobile power supply device 100 is connected to the first input terminal to the fourth input terminal of the control display circuit 200; the first output terminal of the control display circuit 200 is connected to the front terminal of the positioning indication relay DBJ. point connection; the second output terminal of the control display circuit 200 is connected to the front contact of the reverse position indicating relay FBJ; the third output terminal of the control display circuit 200 is connected to the first ends of the coils of the first switch state relay ZM1 to the third switch state relay ZM3; the fourth output terminal of the control display circuit 200 is connected to the first ends of the coils of the first starting relay QM1 to the third starting relay QM3; the first negative output terminal of the mobile power supply device 100 is connected to the middle contact of the positioning indicating relay DBJ, the middle contact of the reverse position indicating relay FBJ, the second ends of the coils of the first switch state relay ZM1 to the third switch state relay ZM3, and the coils of the first starting relay QM1 to the third starting relay QM3. The second end is connected; the second positive output terminal of the mobile power supply device 100 is connected to the rear contact of the first starting relay QM1; the second negative output terminal of the mobile power supply device 100 is connected to the middle contact of the third switch state relay ZM3; the third A phase output terminal, the third B phase output terminal, and the third C phase output terminal of the mobile power supply device 100 are respectively connected to the front contact of the first starting relay QM1, the front contact of the second starting relay QM2, and the front contact of the third starting relay QM3 in a one-to-one correspondence; the middle contact of the first starting relay QM1 is connected to the first end of the first terminal 05-1; the middle contact of the second starting relay QM2 is connected to the middle contact of the first switch state relay ZM1; the first switch state relay ZM1 The rear contact of the first switch state relay ZM1 is connected to the first end of the coil of the positioning indication relay DBJ and the first end of the fourth terminal 05-4; the front contact of the first switch state relay ZM1 is connected to the first end of the second terminal 05-2; the rear contact of the second starting relay QM2 is connected to the second end of the coil of the positioning indication relay DBJ and the rear contact of the third switch state relay ZM3; the rear contact of the third switch state relay ZM3 is connected to the front contact of the third starting relay QM3 and the first end of the coil of the reverse position indication relay FBJ; the middle contact of the third starting relay QM3 is connected to the middle contact of the second switch state relay ZM2; the rear contact of the second switch state relay ZM2 is connected to the first end of the third terminal 05-3;The front contact of the second switch state relay ZM2 is connected to the second end of the coil of the reverse position indicating relay FBJ and the first end of the fifth terminal 05-5; the second ends of the first terminal 05-1 to the fifth terminal 05-5 are used to connect to the input end of the point machine 400.

[0105] In this embodiment, if the tester sees that the current position of the switch 500 is "positioned" before testing the display circuit in the switch machine 400, the tester can click the positioning key on the human-computer interaction interface or press the status button ZA to close the third input terminal and the third output terminal of the control display circuit 200, so that the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are energized, so that the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are energized. The contact is closed with the front contact so that the coil of the positioning indication relay DBJ is connected to the positioning indication circuit in the switch machine 400. If the coil of the positioning indication relay DBJ is energized, the middle contact of the positioning indication relay DBJ is closed with the front contact, so that the positioning indication light DBD is on or the human-machine interaction interface shows that the positioning indication circuit is normal, then it is determined that the positioning indication circuit of the switch machine 400 is normal. If the coil of the positioning indication relay DBJ is de-energized, the positioning indication light DBD is not on or the human-machine interaction interface shows that the positioning indication circuit test is abnormal, then it is determined that the positioning indication circuit of the switch machine 400 is abnormal.

[0106] If the tester sees that the current position of the switch 500 is reversed before testing the display circuit in the switch machine 400, the tester can click the reverse key on the human-machine interface or reset the status button ZA to disconnect the third input terminal and the third output terminal of the control display circuit 200, so that the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are de-energized, and the middle contacts of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are connected to the rear contacts. The contacts are closed so that the coil of the reverse position indication relay FBJ is connected to the reverse position indication circuit in the switch machine 400. If the coil of the reverse position indication relay FBJ is energized, the middle contact and the front contact of the reverse position indication relay FBJ are closed, the reverse position indication light FBD is on or the human-machine interaction interface displays that the reverse position indication circuit test is normal, then it is determined that the reverse position indication circuit of the switch machine 400 is normal. If the coil of the reverse position indication relay FBJ is de-energized, the reverse position indication light FBD is not on or the human-machine interaction interface displays that the reverse position indication circuit test is abnormal, then it is determined that the reverse position indication circuit of the switch machine 400 is abnormal.

[0107] If, before testing the starting circuit in the switch machine 400, the tester sees that the current position of the switch 500 is in the reverse position, the tester can click the positioning key on the human-machine interaction interface or press the status button ZA to close the third input terminal and the third output terminal of the control display circuit 200, so that the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are energized, and the middle contact and the front contact of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are closed, so that the internal state is changed to positioning, and then the tester can click the start key on the human-machine interaction interface or press the start button QA to close the fourth input terminal and the fourth output terminal of the control display circuit 200, so that the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are energized, and the middle contacts of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are closed. The front contact is closed, so that the three-phase power output from the three-phase output end of the mobile power supply device 100 is connected to the reverse operation starting circuit in the switch machine 400. If the reverse operation starting circuit in the switch machine 400 is normal, it will control the switch 500 to switch from the reverse position to the fixed position. If the reverse operation starting circuit in the switch machine 400 is abnormal, it will not control the switch 500 to switch from the reverse position to the fixed position. The tester can determine whether the reverse operation starting circuit in the switch machine 400 is normal based on whether the switch 500 is switched from the reverse position to the fixed position. When an abnormality occurs during the switching process of the switch 500 and it cannot be switched to the fixed position, the tester can click the stop key on the human-computer interaction interface or press the stop button TA to disconnect the fourth input end and the fourth output end of the control display circuit 200, so that the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 lose power, so that the middle contact and the rear contact of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are closed, and the reverse operation starting circuit is disconnected.

[0108] If, before testing the starting circuit in the switch machine 400, the tester sees that the current position of the switch 500 is positioned, the tester can click the reverse key on the human-machine interface or reset the status button ZA to disconnect the third input terminal and the third output terminal of the control display circuit 200, so that the coils of the first switch status relay ZM1, the second switch status relay ZM2, and the third switch status relay ZM3 are de-energized, and the middle contacts and rear contacts of the first switch status relay ZM1, the second switch status relay ZM2, and the third switch status relay ZM3 are closed, so that the internal state is turned to the reverse position. Then the tester can click the start key on the human-machine interface or press the start button QA to close the fourth input terminal and the fourth output terminal of the control display circuit 200, so that the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are energized, and the middle contacts of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are The front contact is closed, so that the three-phase power output from the three-phase output end of the mobile power supply device 100 is connected to the fixed operation reverse starting circuit in the switch machine 400. If the fixed operation reverse starting circuit in the switch machine 400 is normal, it will control the switch 500 to switch from the positioning position to the reverse position. If the fixed operation reverse starting circuit in the switch machine 400 is abnormal, it will not control the switch 500 to switch from the positioning position to the reverse position. The tester can determine whether the fixed operation reverse starting circuit in the switch machine 400 is normal based on whether the switch 500 is switched from the positioning position to the reverse position. When an abnormality occurs during the switching process of the switch 500 and it cannot be switched to the position, the tester can click the stop key on the human-computer interaction interface or press the stop button TA to disconnect the fourth input end and the fourth output end of the control display circuit 200, so that the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 lose power, so that the middle contact and the rear contact of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are closed, and the fixed operation reverse starting circuit is disconnected.

[0109] like Figure 2As shown, as an implementation manner, in the embodiment of the present application, the control display circuit 200 includes a positioning indication light DBD, a reverse position indication light FBD, a status button ZA, a start button QA and a stop button TA; the first positive output end of the mobile power supply device 100 is connected to the first end of the positioning indication light DBD, the first end of the reverse position indication light FBD, the first end of the status button ZA and the first end of the start button QA; the second end of the positioning indication light DBD is connected to the front contact of the positioning indication relay DBJ; the second end of the reverse position indication light FBD is connected to the front contact of the reverse position indication relay FBJ; the second end of the status button ZA is connected to the first end of the coil of the first switch status relay ZM1 to the third switch status relay ZM3; the second end of the start button QA is connected to the first end of the stop button TA; the second end of the stop button TA is connected to the first end of the coil of the first start relay QM1 to the third start relay QM3.

[0110] like Figure 3 As shown, as an implementation manner, in an embodiment of the present application, the control display circuit 200 includes a controller U1; the first positive output terminal of the mobile power supply device 100 is connected to the first input terminal to the fourth input terminal of the controller U1; the first output terminal of the controller U1 is connected to the front contact of the positioning indication relay DBJ; the second output terminal of the controller U1 is connected to the front contact of the reverse position indication relay FBJ; the third output terminal of the controller U1 is connected to the first end of the coil of the first switch status relay ZM1 to the third switch status relay ZM3; the fourth output terminal of the controller U1 is connected to the first end of the coil of the first start relay QM1 to the third start relay QM3.

[0111] In this embodiment, the controller U1 is provided with a human-machine interface positioning key, a reverse position key, a start key, and a stop key. The controller U1 can be used to replace the status button ZA, the start button QA, the stop button TA, the positioning indicator light DBD, and the reverse position indicator light FBD to realize remote control of the relay in the test circuit 300, display the test results of the circuit, and display the position of the switch 500, etc.

[0112] like Figure 2As shown, as an implementation manner, in the embodiment of the present application, the state button ZA is a non-self-reset button, the start button QA and the stop button TA are self-reset buttons, and the test circuit 300 also includes: a phase-failure protector DBQ and a self-closing relay ZBM; the first contact of the phase-failure protector DBQ is connected to the third A-phase output terminal of the mobile power device 100 and the front contact of the first starting relay QM1; the second contact of the phase-failure protector DBQ is connected to the third B-phase output terminal of the mobile power device 100 and the front contact of the second starting relay QM2; the third contact of the phase-failure protector DBQ is connected to the third C-phase output terminal of the mobile power device 100 and the front contact of the third starting relay QM3 The contacts are connected; the front contact of the self-closing relay ZBM is connected to the first positive output terminal of the mobile power device 100; the first end of the stop button TA is connected to the middle contact of the self-closing relay ZBM and the second end of the start button QA; the second end of the stop button TA is connected to the fifth contact of the phase protector DBQ; the sixth contact of the phase protector DBQ is connected to the first ends of the coils of the first starting relay QM1 to the third starting relay QM3 and the first end of the coil of the self-closing relay ZBM; the second ends of the coils of the first starting relay QM1 to the third starting relay QM3 and the second end of the coil of the self-closing relay ZBM are connected to the first negative output terminal of the mobile power device 100.

[0113] In this embodiment, if the tester sees that the current position of the switch 500 is the reverse position before testing the starting circuit in the switch machine 400, the tester presses the status button ZA, so that the first end and the second end of the status button ZA are closed, so that the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are energized, so that the middle contacts and the front contacts of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3 are closed, so that the internal state is reversed. To locate, the tester then presses the start button QA. Since the fifth and sixth contacts of the phase-failure protector DBQ are in the closed state, the coils of the first start relay QM1, the second start relay QM2, the third start relay QM3, and the coil of the self-closing relay ZBM are energized. The middle contacts and front contacts of the first start relay QM1, the second start relay QM2, the third start relay QM3, and the self-closing relay ZBM are closed. Since the middle contact and the front contact of the self-closing relay ZBM are in the closed state, the start button QA is automatically reset. After that, the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 remain energized, so that the three-phase power output from the three-phase output terminal of the mobile power supply device 100 is connected to the reverse control starting circuit in the switch machine 400. If the reverse control starting circuit in the switch machine 400 is normal, it will control the switch 500 to switch from the reverse position to the fixed position. After the switch 500 is switched to the fixed position, the contacts in the switch machine 400 are actuated, so that the path between the three-phase power supply and the reverse control starting circuit in the switch machine 400 is disconnected, so that the phase failure protector The fifth contact and the sixth contact of DBQ are disconnected, causing the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 to lose power, causing the middle contacts and the rear contacts of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 to close, causing the coil of the positioning indication relay DBJ to be connected to the positioning indication circuit in the switch machine 400, causing the coil of the positioning indication relay DBJ to be energized, causing the middle contact and the front contact of the positioning indication relay DBJ to close, causing the positioning indication light DBD to light up.

[0114] In this embodiment, if the tester sees that the current position of the switch 500 is positioned before testing the starting circuit in the switch machine 400, the tester resets the state button ZA, disconnecting the first and second ends of the state button ZA, de-energizing the coils of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3, closing the middle contacts and the rear contacts of the first switch state relay ZM1, the second switch state relay ZM2, and the third switch state relay ZM3, and making the internal state relays ZM1, ZM2, ZM3 closed. Turn to the reverse position, and then the tester presses the start button QA. Since the fifth contact and the sixth contact of the phase-failure protector DBQ are in the closed state, the coils of the first start relay QM1, the second start relay QM2, the third start relay QM3, and the coil of the self-closing relay ZBM are energized, and the middle contact and the front contact of the first start relay QM1, the second start relay QM2, the third start relay QM3, and the self-closing relay ZBM are closed. Since the middle contact and the front contact of the self-closing relay ZBM are in the closed state, the start button QA is automatically reset. After the switch 500 is in position, the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 remain energized, so that the three-phase power output from the three-phase output terminal of the mobile power supply device 100 is connected to the fixed operation reverse starting circuit in the switch machine 400. If the fixed operation reverse starting circuit in the switch machine 400 is normal, it will control the switch 500 to switch from the fixed position to the reverse position. After the switch 500 is switched to the right position, the contacts in the switch machine 400 are actuated, so that the path between the three-phase power supply and the fixed operation reverse starting circuit in the switch machine 400 is disconnected, so that the phase failure protector The fifth contact and the sixth contact of DBQ are disconnected, so that the coils of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 lose power, so that the middle contacts and the rear contacts of the first starting relay QM1, the second starting relay QM2, and the third starting relay QM3 are closed, so that the coil of the reverse position indication relay FBJ is connected to the reverse position indication circuit in the switch machine 400, so that the coil of the reverse position indication relay FBJ is energized, so that the middle contact and the front contact of the reverse position indication relay FBJ are closed, and the reverse position indication light FBD lights up.

[0115] like Figure 2As shown, as an implementation manner, in the embodiment of the present application, the test circuit 300 also includes: a first circuit breaker RD1, a second circuit breaker RD2 and a third circuit breaker RD3; the first end of the first circuit breaker RD1 is connected to the third A-phase output terminal of the mobile power device 100; the second end of the first circuit breaker RD1 is connected to the first contact of the phase protector DBQ and the front contact of the first starting relay QM1; the first end of the second circuit breaker RD2 is connected to the third B-phase output terminal of the mobile power device 100; the second end of the second circuit breaker RD2 is connected to the second contact of the phase protector DBQ and the front contact of the second starting relay QM2; the first end of the third circuit breaker RD3 is connected to the third C-phase output terminal of the mobile power device 100; the second end of the third circuit breaker RD3 is connected to the third contact of the phase protector DBQ and the front contact of the third starting relay QM3.

[0116] In this embodiment, by providing the first circuit breaker RD1 , the second circuit breaker RD2 and the third circuit breaker RD3 , overvoltage, overcurrent and short circuit protection can be effectively performed.

[0117] like Figure 2 As shown, as an implementation manner, in the embodiment of the present application, the test circuit 300 also includes: a current limiting resistor R1; a first end of the current limiting resistor R1 is connected to the second negative output end of the mobile power supply device 100; and a second end of the current limiting resistor R1 is connected to the middle contact of the third switch state relay ZM3.

[0118] In this embodiment, by providing the current-limiting resistor R1 , the magnitude of the current input from the mobile power supply device 100 to the third switch state relay ZM3 can be effectively limited, thereby effectively protecting the third switch state relay ZM3 .

[0119] like Figure 2As shown, as an implementation manner, in the embodiment of the present application, the mobile power supply device 100 includes: a mobile power supply 110 and a single-phase to three-phase converter 120; the first positive output terminal of the mobile power supply 110 is connected to the first end of the positioning indicator light DBD, the first end of the reverse position indicator light FBD, the first end of the state button ZA, the first end of the start button QA, and the front contact of the self-closing relay ZBM; the first negative output terminal of the mobile power supply 110 is connected to the middle contact of the positioning indicator relay DBJ, the middle contact of the reverse position indicator relay FBJ, the second ends of the coils of the first switch state relay ZM1 to the third switch state relay ZM3, and the first start relay QM1 to the third start relay QM3. The second end of the mobile power supply 110 is connected to the second end of the coil of the self-closing relay ZBM; the second positive output end of the mobile power supply 110 is connected to the middle contact of the first starting relay QM1; the second negative output end of the mobile power supply 110 is connected to the middle contact of the third switch state relay ZM3; the third positive output end and the third negative output end of the mobile power supply 110 are respectively connected to the positive input end and the negative input end of the single-phase to three-phase converter 120; the A-phase output end of the single-phase to three-phase converter 120 is connected to the first end of the first circuit breaker RD1; the B-phase output end of the single-phase to three-phase converter 120 is connected to the first end of the second circuit breaker RD2; the C-phase output end of the single-phase to three-phase converter 120 is connected to the first end of the third circuit breaker RD3.

[0120] In this embodiment, the first positive output terminal of the mobile power supply 110 is a DC+24V (direct current +24V) output terminal, the first negative output terminal of the mobile power supply 110 is a DC-24V (direct current -24V) output terminal, the second positive output terminal of the mobile power supply 110 is an AC+110V (alternating current +110V) output terminal, the second negative output terminal of the mobile power supply 110 is an AC-110V (alternating current -110V) output terminal, the third positive output terminal of the mobile power supply 110 is an AC+220V (alternating current +220V) output terminal, and the third negative output terminal of the mobile power supply 110 is an AC-220V (alternating current -220V) output terminal.

[0121] As an implementation method, in the embodiment of the present application, the controller is a programmable logic controller PLC.

[0122] In this embodiment, the PLC (i.e., Programmable Logic Controller, programmable logic controller U1) may be a Siemens S7-200 or the like.

[0123] It should be understood that the use of "system," "device," "unit," and / or "module" in this application is merely a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0124] The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the following

[0125] For other differences between the embodiments, reference may be made to the same or similar parts between the embodiments.

[0126] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switch machine testing device, characterized in that: include: Mobile power supply device, control display circuit and test circuit; The first output terminal of the mobile power supply device is connected to the input terminal of the control and display circuit and the first input terminal of the test circuit; The output end of the control and display circuit is connected to the second input end of the test circuit; The second output terminal and the third output terminal of the mobile power supply device are connected to the third input terminal and the fourth input terminal of the test circuit; The output end of the test circuit is used to be connected to the input end of the switch machine; The output end of the switch machine is used to connect with the turnout; The mobile power supply device is used to supply power to the control and display circuit and the test circuit; The control and display circuit is configured to receive a positioning instruction and send a positioning signal to the test circuit if the position of the switch is positioning, so that the test circuit is connected to the positioning indication circuit in the switch machine, and receive and display the test result of the positioning indication circuit according to the first test result signal sent by the test circuit; The control and display circuit is further configured to receive a reverse position instruction if the position of the switch is reversed, send a reverse position signal to the test circuit, connect the test circuit with the reverse position indicating circuit in the switch machine, receive and display a test result of the reverse position indicating circuit based on a second test result signal sent by the test circuit; The control and display circuit is further configured to receive a positioning instruction and send a positioning signal to the test circuit if the position of the switch is in the reverse position; receive a start instruction and send a start signal to the test circuit, so that the test circuit is connected to the reverse position start circuit in the switch machine, so that the switch machine controls the switch to switch from the reverse position to the position position when the reverse position start circuit is normal; The control and display circuit is also used to receive a reverse position instruction and send a reverse position signal to the test circuit if the position of the switch is fixed, receive a start instruction and send a start signal to the test circuit, so that the test circuit is connected with the fixed operation reverse start circuit in the switch machine, so that the switch machine controls the switch to switch from fixed position to reverse position when the fixed operation reverse start circuit is normal.

2. The switch machine testing device according to claim 1, characterized in that: The test circuit includes: a first switch state relay, a second switch state relay, a third switch state relay, a position indication relay, a reverse position indication relay, a first start relay, a second start relay, a third start relay, a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal; The first positive output terminal of the mobile power supply device is connected to the first input terminal to the fourth input terminal of the control and display circuit; The first output terminal of the control and display circuit is connected to the front contact of the positioning indication relay; The second output terminal of the control and display circuit is connected to the front contact of the reverse position indicating relay; The third output terminal of the control and display circuit is connected to the first end of the coil of the first switch state relay to the third switch state relay; The fourth output terminal of the control and display circuit is connected to the first end of the coil of the first starting relay to the third starting relay; The first negative output terminal of the mobile power supply device is connected to the middle contact of the position indicating relay, the middle contact of the reverse position indicating relay, the second end of the coil of the first switch state relay to the third switch state relay, and the second end of the coil of the first start relay to the third start relay; The second positive output terminal of the mobile power supply device is connected to the rear contact of the first starting relay; The second negative output terminal of the mobile power supply device is connected to the middle contact of the third switch state relay; The third A-phase output terminal, the third B-phase output terminal, and the third C-phase output terminal of the mobile power supply device are respectively connected to the front contact of the first starting relay, the front contact of the second starting relay, and the front contact of the third starting relay in a one-to-one correspondence; A middle contact of the first starting relay is connected to a first end of the first terminal; The middle contact of the second starting relay is connected to the middle contact of the first switch state relay; The rear contact of the first turnout state relay is connected to the first end of the coil of the positioning indication relay and the first end of the fourth terminal; The front contact of the first turnout state relay is connected to the first end of the second terminal; The rear contact of the second starting relay is connected to the second end of the coil of the positioning indication relay and the front contact of the third switch state relay; The rear contact of the third switch state relay is connected to the rear contact of the third start relay and the first end of the coil of the reverse position indicating relay; The middle contact of the third starting relay is connected to the middle contact of the second switch state relay; The rear contact of the second turnout state relay is connected to the first end of the third terminal; The front contact of the second turnout state relay is connected to the second end of the coil of the reverse position indicating relay and the first end of the fifth terminal; The second ends of the first terminal to the fifth terminal are used to be connected to the input end of the point switch machine.

3. The switch machine testing device according to claim 2, characterized in that: The control display circuit includes a position indicating light, a reverse position indicating light, a status button, a start button and a stop button; The first positive output terminal of the mobile power supply device is connected to the first end of the positioning indicator light, the first end of the reverse position indicator light, the first end of the status button and the first end of the start button; The second end of the positioning indication light is connected to the front contact of the positioning indication relay; The second end of the reverse position indicating lamp is connected to the front contact of the reverse position indicating relay; The second end of the state button is connected to the first end of the coil of the first switch state relay to the third switch state relay; The second end of the start button is connected to the first end of the stop button; The second end of the stop button is connected to the first ends of the coils of the first to third starter relays.

4. The switch machine testing device according to claim 2, characterized in that: The control and display circuit includes a controller; The first positive output terminal of the mobile power supply device is connected to the first input terminal to the fourth input terminal of the controller; The first output terminal of the controller is connected to the front contact of the positioning indication relay; The second output terminal of the controller is connected to the front contact of the reverse position indicating relay; The third output terminal of the controller is connected to the first end of the coil of the first switch state relay to the third switch state relay; The fourth output terminal of the controller is connected to the first ends of the coils of the first starting relay to the third starting relay.

5. The switch machine testing device according to claim 3, characterized in that: The state button is a non-self-resetting button, the start button and the stop button are self-resetting buttons, and the test circuit further includes: a phase failure protector and a self-closing relay; The first contact of the phase protection device is connected to the third A-phase output terminal of the mobile power supply device and the front contact of the first starting relay; The second contact of the phase protection device is connected to the third B-phase output terminal of the mobile power supply device and the front contact of the second starting relay; The third contact of the phase protection device is connected to the third C-phase output terminal of the mobile power supply device and the front contact of the third starting relay; The front contact of the self-closing relay is connected to the first positive output terminal of the mobile power supply device; The first end of the stop button is connected to the middle contact of the self-closing relay and the second end of the start button; The second end of the stop button is connected to the fifth contact of the phase protector; The sixth contact of the phase protection device is connected to the first end of the coil of the first starting relay to the third starting relay and the first end of the coil of the self-closing relay; The second ends of the coils of the first starting relay to the third starting relay and the second end of the coil of the self-closing relay are connected to the first negative output end of the mobile power supply device.

6. The switch machine testing device according to claim 5, characterized in that: The test circuit further comprises: a first circuit breaker, a second circuit breaker and a third circuit breaker; The first end of the first circuit breaker is connected to the third A-phase output end of the mobile power supply device; The second end of the first circuit breaker is connected to the first contact of the phase protector and the front contact of the first starting relay; The first end of the second circuit breaker is connected to the third B-phase output end of the mobile power supply device; The second end of the second circuit breaker is connected to the second contact of the phase protector and the front contact of the second starting relay; The first end of the third circuit breaker is connected to the third C-phase output end of the mobile power supply device; The second end of the third circuit breaker is connected to the third contact of the phase protector and the front contact of the third starting relay.

7. The switch machine testing device according to claim 6, characterized in that: The test circuit further includes: a current limiting resistor; The first end of the current limiting resistor is connected to the second negative output end of the mobile power supply device; The second end of the current-limiting resistor is connected to the middle contact of the third switch state relay.

8. The switch machine testing device according to claim 6, characterized in that: The mobile power supply device comprises: a mobile power supply and a single-phase to three-phase converter; The first positive output terminal of the mobile power supply is connected to the first end of the positioning indicator light, the first end of the reverse position indicator light, the first end of the status button, the first end of the start button, and the front contact of the self-closing relay; The first negative output terminal of the mobile power supply is connected to the middle contact of the positioning indication relay, the middle contact of the reverse position indication relay, the second end of the coil of the first switch state relay to the third switch state relay, the second end of the coil of the first starting relay to the third starting relay, and the second end of the coil of the self-closing relay; The second positive output terminal of the mobile power supply is connected to the rear contact of the first starting relay; The second negative output terminal of the mobile power supply is connected to the middle contact of the third switch state relay; The third positive output terminal and the third negative output terminal of the mobile power supply are respectively connected to the positive input terminal and the negative input terminal of the single-phase to three-phase converter; The A-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the first circuit breaker; The B-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the second circuit breaker; The C-phase output terminal of the single-phase to three-phase converter is connected to the first terminal of the third circuit breaker.

9. The switch machine testing device according to claim 4, characterized in that: The controller is a programmable logic controller (PLC).

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