Testing equipment of switch machine

Abstract

The utility model discloses test equipment for a point switch. The test equipment comprises an alternating current power supply E, an alternating current circuit breaker QF, an alternating current contactor 1KM, an alternating current contactor 2KM, a self-locking button S, a counting relay BZ, a time relay KT and an indicating lamp 1HL, an A phase, a B phase and a C phase of an alternating current power supply E are connected with internal terminals of the alternating current switch machine through alternating current contactors, and the A phase and an N line of the alternating current power supply E are connected with a counting relay BZ, a time relay KT, an alternating current contactor 1KM, an alternating current contactor 2KM and an indicating lamp 1HL through a self-locking button S. The device is scientific in design, and can conveniently and reliably control the AC switch machine to carry out positioning and anti-positioning work in combination with the action logic of the AC switch machine, so that the service life of the AC switch machine is tested, the factory quality of the AC switch machine is guaranteed, and the working efficiency is improved. And the service life requirements of different users and different working scenes on the communication switch machine can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of railway turnout conversion equipment, in particular to a test device for a switch machine. Background Art

[0002] A switch machine is an important signal infrastructure equipment used to reliably change the position of switches, change the direction of switch opening, lock the switch point rail, and reflect the position and status of switches. It can well ensure driving safety, improve transportation efficiency, and improve the labor intensity of drivers.

[0003] Turnout positions are divided into fixed and reverse positions. Fixed and reverse positions are generally determined by stations based on needs. In principle, the position leading to a straight line is fixed. The fixed position is the position in which the turnout is normally located. This is the position in which the turnout should remain open to a certain line except when in use, cleaning, inspection, or repair. The reverse position is a position that can be temporarily changed to another position based on needs. This position opens the turnout to another line. To switch between these two positions, a turnout switch device (i.e., a switch machine) needs to be installed at the turnout point rail.

[0004] Currently, AC switch machines, including the ZDJ9 series and the ZYJ7 series electro-hydraulic switch machines, are widely used in railway stations. To ensure their operational reliability, they undergo lifespan testing or run-in testing. Specifically, these tests control the machine's reciprocating motion between the set and reverse positions (i.e., the set and reverse operation, which specifically involves switching between the set and reverse positions).

[0005] For the AC switch machine, the AC motor on it pulls the pull rod on the turnout through the transmission mechanism to drive the switch point rail, so that the switch point rail is in contact with or separated from the basic rail of the turnout, thereby realizing the switching of the switch position, thereby realizing the switching from the fixed position to the reverse position, or from the reverse position to the fixed position.

[0006] In order to reliably grasp the service life of AC point switches, ensure the factory quality of AC point switches, and meet the service life requirements of AC point switches for different users and different working scenarios, it is necessary to test the service life of AC point switches.

[0007] However, there is currently no device that can conveniently and reliably test the service life of the AC switch machine to ensure the factory quality of the AC switch machine. Utility Model Content

[0008] The purpose of the utility model is to provide a test device for a switch machine in view of the technical defects in the prior art.

[0009] To this end, the utility model provides a test device for a switch machine, which includes an AC power supply E, an AC circuit breaker QF, an AC contactor 1KM, an AC contactor 2KM, a self-locking button S, a counting relay BZ, a time relay KT and an indicator light 1HL;

[0010] Phase A of the AC power source E is connected to the contact S1 of the self-locking button S and the internal terminal X1 of the AC switch through the AC circuit breaker QF.

[0011] Phase B of the AC power source E is connected to contact L1 of AC contactor 1KM and contact L1 of AC contactor 2KM through AC circuit breaker QF;

[0012] Phase C of the AC power source E is connected to contact L2 of AC contactor 1KM and contact L2 of AC contactor 2KM through AC circuit breaker QF;

[0013] Among them, the contact T1 of the AC contactor 1KM is connected to the internal terminal X4 of the AC switch machine;

[0014] The contact T2 of the AC contactor 1KM is connected to the internal terminal X3 of the AC switch machine;

[0015] The contact T1 of the AC contactor 2KM is connected to the internal terminal X2 of the AC switch machine;

[0016] The contact T2 of the AC contactor 2KM is connected to the internal terminal X5 of the AC switch machine;

[0017] Among them, the contact S2 of the self-locking button S is connected to the node M;

[0018] Node M is connected to contact B3 of counting relay BZ, contact K7 of time relay KT, delayed-off contact K8 of time relay KT, contact A1 of AC contactor 2KM, and contact H1 of indicator light 1HL respectively;

[0019] The delayed disconnection contact K6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact B1 of the counting relay BZ respectively;

[0020] Contact A2 of AC contactor 1KM is connected to contact B2 of counting relay BZ;

[0021] The contact A2 of the AC contactor 2KM is connected to the delayed disconnect contact K3 of the time relay KT;

[0022] Among them, the contact B4 of the counting relay BZ, the contact K2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact K1 of the time relay KT and the contact H2 of the indicator light 1HL are respectively connected at the node O through the wire convergence;

[0023] The node O is connected to the neutral line N of the AC power source E through the AC circuit breaker QF.

[0024] It can be seen from the technical solution provided by the above utility model that compared with the existing technology, the utility model provides a test equipment for a switch machine, which is scientifically designed and can combine the action logic of the AC switch machine itself (that is, the working logic of executing positioning action and reverse action) to conveniently and reliably control the AC switch machine to perform positioning and reverse action, thereby testing the service life of the AC switch machine, ensuring the factory quality of the AC switch machine, and better meeting the service life requirements of different users and different work scenarios for the AC switch machine, which has great practical significance.

[0025] By applying the utility model, the positioning and reverse work performed by the AC switch can be tested conveniently and reliably, which is beneficial to understanding the service life of the AC switch and ensuring the product operation reliability of the AC switch.

[0026] After testing, it was found that the utility model can test the service life of the AC switch machine by adopting fewer electrical components such as time relays, counting relays (i.e., counters) and AC contactors, and reliably control the positioning and reverse positioning work performed by the AC switch machine, thereby significantly reducing the testing cost.

[0027] After testing, the utility model can efficiently and reliably control the AC switch to perform the positioning and reversing work, and record the number of operations, and can meet the service life test requirements for various models of AC switch machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the circuit principle of a test device for a switch machine provided by the utility model;

[0029] Figure 2 The utility model provides a test device for a switch machine, and a schematic diagram of the internal wiring of an AC switch machine tested;

[0030] Figure 3 This is a schematic diagram of an embodiment of powering an operation execution electrical component in a test device for a switch machine provided by the present invention;

[0031] Figure 4 A schematic diagram of an embodiment of powering an operating control electrical component in a test device for a switch machine provided by the utility model;

[0032] Figure 5 A test device for a switch provided by the present invention is a schematic diagram of a control circuit of an embodiment when driving an AC switch to perform switching from a fixed position to a reverse position;

[0033] Figure 6 The present invention provides a test device for a switch machine, and a schematic diagram of a control circuit of an embodiment when driving an AC switch machine to perform a switching operation of reverse positioning. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0037] See also Figures 1 to 6 The utility model provides a test equipment for a switch machine, which is used for the working life test or running-in test of the components and the whole machine of the AC switch machine, and specifically includes: an AC power supply E, an AC circuit breaker QF, an AC contactor 1KM, an AC contactor 2KM, a self-locking button S, a counting relay BZ, a time relay KT and an indicator light 1HL;

[0038] Phase A of the AC power source E is connected to the contact S1 of the self-locking button S and the internal terminal X1 of the AC switch through the AC circuit breaker QF.

[0039] Phase B of the AC power source E is connected to contact L1 of AC contactor 1KM and contact L1 of AC contactor 2KM through AC circuit breaker QF;

[0040] Phase C of the AC power source E is connected to contact L2 of AC contactor 1KM and contact L2 of AC contactor 2KM through AC circuit breaker QF;

[0041] Among them, the contact T1 of the AC contactor 1KM is connected to the internal terminal X4 of the AC switch machine;

[0042] The contact T2 of the AC contactor 1KM is connected to the internal terminal X3 of the AC switch machine;

[0043] The contact T1 of the AC contactor 2KM is connected to the internal terminal X2 of the AC switch machine;

[0044] The contact T2 of the AC contactor 2KM is connected to the internal terminal X5 of the AC switch machine;

[0045] Among them, the contact S2 of the self-locking button S is connected to the node M;

[0046] Node M is connected to contact B3 of counting relay BZ, contact K7 of time relay KT, delayed-off contact K8 of time relay KT, contact A1 of AC contactor 2KM, and contact H1 of indicator light 1HL respectively;

[0047] The delayed disconnection contact K6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact B1 of the counting relay BZ respectively;

[0048] Contact A2 of AC contactor 1KM is connected to contact B2 of counting relay BZ;

[0049] The contact A2 of the AC contactor 2KM is connected to the delayed disconnect contact K3 of the time relay KT;

[0050] Among them, the contact B4 of the counting relay BZ, the contact K2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact K1 of the time relay KT and the contact H2 of the indicator light 1HL are respectively connected at the node O through the wire convergence;

[0051] The node O is connected to the neutral line N (ie, the N line) of the AC power source E through the AC circuit breaker QF.

[0052] In the present invention, in a specific implementation, the AC power source E is a 380V AC power source.

[0053] It should be noted that, in the present utility model, the AC power source E, the AC circuit breaker QF, the AC contactor 1KM and the AC contactor 2KM are the operation execution electrical components in the test equipment provided by the present utility model;

[0054] The self-locking button S, the counting relay BZ, the time relay KT and the indicator light 1HL are the operation control electrical components in the test equipment provided by the utility model.

[0055] In the present invention, in a specific implementation, phase A of the AC power source E is connected to the contact Q3 of the AC circuit breaker QF;

[0056] The contact Q7 of the AC circuit breaker QF is connected to the contact S1 of the self-locking button S and the internal terminal X1 of the AC switch machine respectively;

[0057] Phase B of the AC power source E is connected to contact Q2 of the AC circuit breaker QF;

[0058] The contact Q6 of the AC circuit breaker QF is connected to the contact L1 of the AC contactor 1KM and the contact L1 of the AC contactor 2KM respectively;

[0059] Phase C of the AC power source E is connected to contact Q1 of the AC circuit breaker QF;

[0060] The contact Q5 of the AC circuit breaker QF is connected to the contact L2 of the AC contactor 1KM and the contact L2 of the AC contactor 2KM, respectively.

[0061] In the present invention, in a specific implementation, the neutral line N of the AC power source E is connected to the contact Q4 of the AC circuit breaker QF;

[0062] Contact Q8 of AC circuit breaker QF is connected to node O.

[0063] See also Figure 2 As shown, in order to more clearly understand the present invention, the technical principle and working mechanism of the AC switch are explained below.

[0064] AC switch, as a device for switching railway turnouts, is a well-known railway device with mature existing technology. For example, it can be a ZDJ9 AC switch produced by Tianjin Railway Signal Co., Ltd.

[0065] The function of an AC switch is to use its AC motor to pull the pull rod on the turnout through a transmission mechanism, thereby driving the turnout point rail, causing the turnout point rail to mate or detach with the turnout base rail, thereby switching the turnout position, that is, switching from the fixed position to the reverse position, or vice versa. In other words, the switch machine is an important signaling infrastructure device that changes the position of the turnout, changes the direction of turnout opening, locks the turnout point rail, and reflects the position and status of the turnout.

[0066] Figure 2 For the internal wiring schematic diagram of the AC switch machine, see Figure 2 As shown, the AC switch machine includes an AC motor D3;

[0067] Among them, the coil U1 of the AC motor D3 is connected to the internal terminal X1 of the AC switch machine;

[0068] The coil V1 of the AC motor D3 is connected to the contact K02 of the safety switch K of the AC switch machine.

[0069] The contact K01 of the safety switch K of the AC point switch is connected to the contact D14 and the contact D44 of the contact group D2 of the AC point switch.

[0070] The coil W1 of the AC motor D3 is connected to the contact D12 and the contact D42 of the AC switch machine's own contact group D2;

[0071] The contact D11 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X4;

[0072] The contact D13 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X3;

[0073] The contact D43 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X2;

[0074] The contact D41 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X5;

[0075] It should be noted that the working principle of the AC motor D3 is as follows: when the coil U1 of the AC motor D3 is connected to the A phase of the AC power supply E, the coil W1 of the AC motor D3 is connected to the B phase of the AC power supply E, and the coil V1 of the AC motor D3 is connected to the C phase of the AC power supply E, the AC motor D3 rotates in reverse;

[0076] When the coil U1 of the AC motor D3 is connected to the A phase of the AC power supply E, the coil W1 of the AC motor D3 is connected to the C phase of the AC power supply E, and the coil V1 of the AC motor D3 is connected to the B phase of the AC power supply E, the AC motor D3 rotates forward;

[0077] Furthermore, it should be noted that the AC switch is driven by an AC motor. When the switch is initially positioned (i.e., performing a positioning operation on a turnout), contacts D11 and D12 of the AC switch's own (i.e., self-contained) contact group D2 are closed, contacts D13 and D14 are closed, and contacts D41 and D42 of the AC switch's own (i.e., self-contained) contact group D2 are disconnected, and contacts D43 and D44 are disconnected.

[0078] When the switch is reversed (i.e., the turnout is reversed), the contacts D41 and D42 in the switch's own (i.e., self-contained) contact group D2 are closed, the contacts D43 and D44 are closed, the contacts D11 and D12 are disconnected, and the contacts D13 and D14 are disconnected.

[0079] When the coil U1 of the AC motor D3 of the AC switch is connected to phase A of the AC power source E, the coil W1 of the AC motor D3 is connected to phase B of the AC power source E, and the coil V1 of the AC motor is connected to phase C of the 380V AC power source E, the rotor of the AC motor D3 is driven to rotate in the reverse direction, causing the AC switch to operate from the positioning state to the reverse state (that is, the switch connected to the AC switch is switched from the positioning state to the reverse state). At this time, the contacts D11 and D12 in the contact group D2 of the switch are disconnected, the contacts D13 and D14 are disconnected, the contacts D41 and D42 are closed, and the contacts D43 and D44 are closed.

[0080] When the coil U1 of the AC motor D3 of the AC switch is connected to phase A of the AC power supply E, the AC motor coil W1 is connected to phase C of the AC power supply E, and the AC motor coil V1 is connected to phase B of the AC power supply E, the rotor of the AC motor D3 is driven to rotate forward, causing the AC switch to operate from the reverse position to the positioned position (that is, the switch connected to the AC switch is switched from the reverse position to the positioned position). At this time, contacts D11 and D12 in the switch's own contact group D2 are closed, contacts D13 and D14 are closed, contacts D41 and D42 are disconnected, and contacts D43 and D44 are disconnected.

[0081] In the present invention, in specific implementation, the time relay KT is a cyclic reciprocating time relay with power-on delay and off-time;

[0082] In a specific implementation, a set time parameter value a as the forward delay time, a set time parameter value b as the interval time, and a set time parameter value c as the reverse delay time are preset on the time relay KT.

[0083] In order to more clearly understand the present invention, the technical principle and working mechanism of the time relay KT are explained below.

[0084] In the present invention, the time relay KT is a well-known electrical component with mature prior art technology, for example, the forward and reverse control time relay model JZF-10 produced by Delixi Electric Co., Ltd. can be used;

[0085] In the present utility model, the time relay KT has the following functions: by utilizing its forward timing, interval, reverse timing and reciprocating functions, it is used to control its own delayed disconnection contact K8 and contact K6 to cyclically open and close, so as to further control the working state of the AC contactor 1KM and the counting relay BZ; and by controlling its own delayed disconnection contact K1 and contact K3 to cyclically open and close, to further control the working state of the AC contactor 2KM.

[0086] Among them, the contact K8 and contact K6, contact K1 and contact K3 of the time relay KT are all delayed-off contacts.

[0087] It should be noted that the working principle of the time relay KT is as follows: a set time parameter value a as the forward delay time, a set time parameter value b as the interval time, and a set time parameter value c as the reverse delay time are pre-set for the time relay KT;

[0088] After the contact K7 and contact K2 of the time relay KT are connected to the power supply, the time relay KT starts to energize and work, that is, the forward delay time starts to be measured. At this time, the delayed disconnection contact K8 and contact K6 of the time relay KT are connected. When the time relay KT reaches the set time parameter value a of the forward delay time, the interval time starts to be measured (that is, the interval time parameter b is measured). At this time, the delayed disconnection contact K8 and contact K6 of the time relay KT are disconnected.

[0089] When the time relay KT reaches the set time parameter value b of the interval time, the reverse delay time timing starts, and the delayed disconnection contact K1 and contact K3 of the time relay KT are connected. When the time relay KT reaches the set time parameter value c of the reverse delay time, the interval time timing starts immediately (i.e., the timing of the interval time parameter b starts), and the delayed disconnection contact K1 and contact K3 of the time relay KT are disconnected.

[0090] When the time relay KT reaches the set time parameter value b of the interval time, the forward delay time starts again, and the cycle repeats.

[0091] In order to more clearly understand the present invention, the technical principle and working mechanism of the counting relay BZ are explained below.

[0092] In the present invention, the counting relay BZ is a well-known electrical component with a mature prior art, for example, it can be a counting relay with a model number of JDM11-6H produced by Shanghai Jiakong Instrument Co., Ltd.;

[0093] In the present utility model, the counting relay BZ is used to record the number of times the electric switch machine moves from the positioning position to the reverse position.

[0094] It should be noted that the working principle of the counting relay BZ is as follows: after the contacts B3 and B4 of the counting relay BZ are connected to the power supply, the counting relay BZ starts to energize and work; each time the contacts B1 and B2 of the counting relay BZ detect a voltage signal, the counting relay BZ counts one number;

[0095] It should be noted that, in the present utility model, the A phase and N line of the AC power supply E are connected through the closing of the delayed-off contact K6 and the contact K8 of the time relay KT, and a voltage signal is input to the contacts B1 and B2 of the counting relay BZ. Each time the delayed-off contact K6 and the contact K8 of the time relay KT are closed, a voltage signal is input to the contacts B1 and B2 of the counting relay BZ, and the number of times the counting relay BZ counts is increased by one.

[0096] In order to more clearly understand the present invention, the technical principle and working mechanism of AC contactors 1KM and 2KM are explained below.

[0097] In the present invention, the AC contactors 1KM and 2KM are well-known electrical components with mature prior art technology, for example, they may be the AC contactors of model CJX2S-1210M produced by Delixi Electric Co., Ltd.

[0098] In the present invention, the AC contactor 1KM is used to further control the on-off of the AC power source E to the original AC motor reversing working circuit in the AC switch machine through the on-off of its own contact L1 and contact T1, contact L2 and contact T2;

[0099] The AC contactor 2KM is used to further control the on-off of the AC power source E to the original AC motor forward working circuit in the AC switch machine by switching on and off its own contacts L1 and T1, and contacts L2 and T2;

[0100] It should be noted that the working principles of AC contactors 1KM and 2KM are the same. Specifically, contacts A1 and A2 of the AC contactor are input control terminals, while contacts L1 and T1, and contacts L2 and T2 of the AC contactor are output execution terminals. When contacts A1 and A2 of the AC contactor are connected to an AC signal, the current in the internal coil of the AC contactor will generate a magnetic field, causing the static iron core to generate electromagnetic attraction to attract the moving iron core, and drive the AC contactor contacts to operate, closing the normally open contacts L1 and T1, and contacts L2 and T2 of the AC contactor. When the AC signal connected to contacts A1 and A2 of the AC contactor is disconnected, no current flows through the internal coil of the AC contactor, and no magnetic field is generated. The moving iron core is disconnected from the static contact under the action of the tension of the tension spring, thereby disconnecting the normally open contacts L1 and T1, and contacts L2 and T2 of the AC contactor.

[0101] In the present invention, in specific implementation, for the AC circuit breaker QF, see Figure 3 As shown, when the circuit breaker QF is closed, the AC contactors 1KM and 2KM and other electrical components are operated to start supplying power.

[0102] In order to more clearly understand the present invention, the technical principle and working mechanism of the circuit breaker QF are explained below.

[0103] In the present invention, the AC circuit breaker QF is a well-known electrical component with a mature technology in the prior art, for example, it can be a CDM3-63C circuit breaker produced by Delixi Electric Co., Ltd.;

[0104] In the present invention, the AC circuit breaker QF is used to control the opening and closing of the AC power source E.

[0105] Among them, the contacts Q1 and Q5, the contacts Q2 and Q6, the contacts Q3 and Q7, and the contacts Q4 and Q8 of the AC circuit breaker QF are normally open contacts.

[0106] It should be noted that the working principle of the AC circuit breaker QF is as follows: contacts Q1 and Q5, contacts Q2 and Q6, contacts Q3 and Q7, and contacts Q4 and Q8 of the circuit breaker are normally open contacts. When the circuit breaker is closed, contacts Q1 and Q5, contacts Q2 and Q6, contacts Q3 and Q7, and contacts Q4 and Q8 of the circuit breaker are connected;

[0107] The AC circuit breaker QF is based on the principle of a thermal-magnetic trigger, which consists of a thermal element and a magnetic element. The thermal element generates heat when current flows through it. When the current exceeds a set value, the thermal element expands, triggering the magnetic element to operate and interrupt the circuit. The magnetic element, on the other hand, generates a magnetic field when current flows through it. When the current exceeds a set value, the magnetic element is affected by the magnetic field and activates, interrupting the circuit.

[0108] It should be noted that, see Figure 3 As shown, after the AC circuit breaker QF is closed, the operation execution electrical component of the present invention starts to supply power. When the circuit is working normally, the AC circuit breaker QF is in a closed state, that is, the contacts Q1 and Q5, the contacts Q2 and Q6, the contacts Q3 and Q7, and the contacts Q4 and Q8 of the circuit breaker are connected, and current passes through the conductors inside the circuit breaker. At the same time, the contacts are controlled by the thermal element and the magnetic element.

[0109] Among them, after closing the AC circuit breaker QF, when a circuit fault occurs, such as excessive current or short circuit, the thermal element will expand, causing the magnetic element to operate and the circuit breaker to open quickly. The circuit breaker's contacts Q1 and Q5, contact Q2 and Q6, contact Q3 and Q7, contact Q4 and Q8 are disconnected, thereby disconnecting the execution circuit.

[0110] See also Figure 4 As shown, when the self-locking button S is pressed, the contact H1 of the indicator light 1HL is connected to the node M through a wire, and the node M is connected to the A phase of the AC power supply E through the contact S2 and contact S1 of the self-locking button S;

[0111] The contact H2 of the indicator light 1HL is connected to the neutral line N (ie, the N line) of the AC power source E. At this time, the indicator light 1HL lights up, indicating that the operating control electrical component in the present utility model starts to supply power.

[0112] In order to more clearly understand the present invention, the technical principle and working mechanism of the self-locking button S are explained below.

[0113] In the present invention, the self-locking button S is a well-known device with a mature prior art, for example, it can be a self-locking button with a model number of LAY7-11DZS produced by Delixi Electric Co., Ltd.

[0114] In the present invention, the self-locking button S is used to control the connection or disconnection of the working circuit of the operation control electrical components (specifically including the counting relay BZ, the time relay KT and the indicator light 1HL) in the present invention;

[0115] Among them, the contacts S1 and S2 of the self-locking button S are normally open contacts;

[0116] It should be noted that the working principle of the self-locking button S is that after being pressed and released, the self-locking button is held by its own locking mechanism, which can close the contacts S1 and S2 of the self-locking button S. At this time, in the present utility model, the self-locking button S is used to open the working circuit of the operating control electrical components (specifically including the counting relay BZ, the time relay KT and the indicator light 1HL) in the present utility model;

[0117] After pressing and releasing again, the self-locking button's own locking mechanism is disconnected, and the contacts S1 and S2 of the self-locking button S are disconnected. At this time, the working circuit of the operating control electrical components in the utility model (specifically including the counting relay BZ, the time relay KT and the indicator light 1HL) is closed.

[0118] It should be noted that when the self-locking button S is pressed, the working circuit of the operation control electrical components (specifically including the counting relay BZ, the time relay KT, and the indicator light 1HL) is turned on. The contact B3 of the counting relay BZ is connected to the A phase of the AC power supply E through the node M, the contact S2 of the self-locking button S, and the contact S1. The contact B4 of the counting relay BZ is connected to the N line of the AC power supply E through the node O. At this time, the counting relay BZ starts to be energized and work.

[0119] At the same time, the contact K7 of the time relay KT is connected to the A phase of the AC power supply E through the node M, the contact S2 of the self-locking button S and the contact S1, and the contact K2 of the time relay KT is connected to the N line of the 380V AC power supply E through the node O. At this time, the time relay KT is energized and working.

[0120] See also Figure 5 As shown, after the time relay KT is energized, the time relay KT starts to time forward, and at the same time, the delayed-off contact K8 and contact K6 of the time relay KT are closed; the contact A1 of the AC contactor 1KM is connected to the A phase of the AC power supply E through the delayed-off contact K6 and contact K8 of the time relay KT, the node M, the contact S2 and the contact S1 of the self-locking button S; the contact A2 of the AC contactor 1KM is connected to the N line of the AC power supply E through the node O; therefore, at this time, the AC contactor 1KM is energized, thereby closing the contact L1 and contact T1 of the AC contactor 1KM, and closing the contact L2 and contact T2.

[0121] See also Figure 2 As shown, for the present invention, the initial state of the AC switch is set to the positioning state, that is, the contacts D11 and D12, and the contacts D13 and D14 in the contact group D2 of the AC switch itself (i.e., the self-contained) are in the closed state, and the contacts D41 and D42 in the contact group D2 of the AC switch itself (i.e., the self-contained) are disconnected, and the contacts D43 and D44 are in the open state;

[0122] When the coil U1 of the AC motor D3 of the AC switch machine (i.e., the internal one) is connected to the A phase of the AC power source E through the terminal X1 in the internal terminal group D1 of the AC switch machine, the contact Q7 and the contact Q3 of the AC circuit breaker QF, the coil W1 of the AC motor D3 is connected to the A phase of the AC power source E through the contact D12 and the contact D11 in the internal contact group D2 of the AC switch machine (i.e., the internal one), the terminal X4 in the internal terminal group D1 of the AC switch machine, the contacts T1 and L1 of the contactor 1KM, and the contact QF of the AC circuit breaker QF. Q6 and contact Q2 are connected to phase B of the AC power source E. Coil V1 of the AC motor D3 is connected to phase C of the AC power source E via contacts D14 and D13 of the AC switch's own (inner) contact group D2, terminal X3 of the AC switch's internal terminal group D1, contacts T2 and L2 of the contactor 1KM, and contacts Q5 and Q1 of the AC circuit breaker QF. At this point, the AC motor D3 of the AC switch begins to reverse, switching the AC switch from the positioning position to the reverse position.

[0123] At the same time, the contact B1 of the counting relay BZ is connected to the A phase of the AC power supply E through the delayed disconnection of the contact K6 and the contact K8 of the time relay KT, the node M, the contact S2 and the contact S1 of the self-locking button S, and the contact B2 of the counting relay BZ is connected to the N line of the AC power supply E through the node O. The counting relay BZ records a number in real time.

[0124] It should be noted that, for the AC switch machine involved in the present invention, the AC motor installed therein serves as a power source and is linked to the pull rod on the turnout through a transmission mechanism. The AC motor is used to pull the pull rod on the turnout through the transmission mechanism to drive the switch point rail, so that the switch point rail is in contact with or separated from the turnout base rail, thereby achieving the switching of the turnout position, that is, achieving switching from the positioning position to the reverse position, or from the reverse position to the positioning position. Among them, when the coil U1 of the AC motor D3 is connected to the A phase of the AC power supply E, the AC motor coil W1 is connected to the C phase of the AC power supply E, and the AC motor coil V1 is connected to the B phase of the AC power supply E, the rotor of the AC motor D3 begins to rotate forward, and the AC switch machine is operated from the reverse position (i.e., switched) to the positioning position.

[0125] See also Figure 5 As shown, when the AC switch machine runs to the reverse position, the contact D12 and the contact D11 in the AC switch machine's own contact group D2 are disconnected, and the contact D14 and the contact D13 are disconnected, thereby disconnecting the working circuit of the AC motor D3 of the AC switch machine itself, and the AC motor D3 of the AC switch machine itself stops reverse rotation;

[0126] See also Figure 4 As shown, it should be noted that a set time parameter value a as the forward delay time is pre-set on the time relay KT, and the set time parameter value a is used as the running time of the AC switch from the positioning position to the reverse position. When the AC switch runs from the positioning position to the reverse position, when the time relay KT times to the set time parameter value a, the interval timing is started (that is, the timing of the interval time parameter b is started), and the delayed disconnection contacts K6 and K8 of the time relay KT are disconnected; at this time, the working circuits of the contacts A1 and A2 of the AC contactor 1KM are disconnected by the delayed disconnection contacts K6 and K8 of the time relay KT, so that the contacts L1 and T1 of the AC contactor 1KM are disconnected, and the contacts L2 and T2 are disconnected.

[0127] See also Figure 6As shown in FIG. 1 , when the time relay KT reaches the interval time parameter b, the time relay KT starts to time in reverse, and at the same time, the delayed disconnection contacts K1 and K3 of the time relay KT are closed; at this time, the AC switch is in the reverse position, and the contacts D41 and D42, contacts D43 and D44 in the contact group D2 of the AC switch are in the closed state. The coil U1 of the AC motor D3 of the AC switch is connected to the A phase of the AC power supply E through the terminal X1 in the terminal group D1 of the AC switch, the contact Q7 and the contact Q3 of the AC circuit breaker QF, and the coil W1 of the AC motor D3 is connected to the A phase of the AC power supply E through the contact D12 and the contact D44 in the contact group D2 of the AC switch (i.e., the AC switch itself). 42 and contact D41, terminal X5 in the AC switch machine's internal terminal group D1, contacts T2 and L2 of contactor 2KM, contacts Q5 and Q1 of circuit breaker QF are connected to phase C of the AC power source E. Coil V1 of AC motor D3 is connected to phase B of AC power source E via contacts D14, D44, and D43 of the AC switch machine's own (i.e., self-contained) contact group D2, terminal X2 in the AC switch machine's internal terminal group D1, contacts T2 and L2 of contactor 2KM, and contacts Q6 and Q2 of AC circuit breaker QF. At this time, AC motor D3 of the AC switch machine begins to rotate forward, thereby operating the AC switch machine from the reverse position to the fixed position.

[0128] In the present utility model, it should be noted that a set time parameter value c as the reverse delay time is first set on the time relay KT, which is the running time of the AC switch from the reverse position to the fixed position; when the AC switch runs from the reverse position to the fixed position, the time relay KT counts to the set time parameter value c, and then starts the interval timing (that is, starts the timing of the interval time parameter b), and the delayed disconnection contact K3 and contact K1 of the time relay KT are disconnected; at this time, the working circuit of the contacts A1 and A2 of the AC contactor is disconnected by the delayed disconnection contact K1 and contact K3 of the time relay KT, thereby disconnecting the contacts L1 and T1 of the AC contactor 2KM, and disconnecting the contacts L2 and T2.

[0129] When the time relay KT reaches the interval time parameter b, the time relay KT starts to count forward again. At the same time, the delayed-off contact K8 and contact K6 of the time relay KT are closed again. During this process, the contacts H1 and H2 of the indicator light 2HL, the contacts A1 and A2 of the AC contactor 1KM, and the contacts B1 and B2 of the counting relay BZ are closed through the closed state of the delayed-off contact K8 and contact K6 of the time relay KT, thereby turning on the power again.

[0130] Since the power is connected to contacts A1 and A2 of the AC contactor 1KM, contacts L1 and T1 of the AC contactor 1KM are closed, and contacts L2 and T2 are closed, thus connecting the reverse working circuit of the AC motor coil. The AC motor D3 of the AC switch machine begins to reverse, and the AC switch machine moves from the positioning position to the reverse position. During this process, the count of the counting relay BZ increases by 1;

[0131] When the time relay KT reaches the set time parameter value a again, the interval timing starts immediately (that is, the interval time parameter b starts to be timed). When the time reaches parameter b, the time relay KT starts reverse timing. At this time, the delayed disconnection contact K3 and contact K1 of the time relay KT are closed again. During this process, the contacts A1 and A2 of the AC contactor 2KM are connected to the power supply again through the delayed disconnection contacts K1 and K3 of the time relay KT.

[0132] Since the contacts L1 and T1, as well as the contacts L2 and T2 of the AC contactor 2KM are closed and the power is turned on, the forward rotation working circuit of the AC switch machine's AC motor D3 is connected, and the AC switch machine's own AC motor D3 starts to rotate forward, running the AC switch machine from the reverse position to the fixed position;

[0133] When the time relay KT reaches the set time parameter value c, it immediately starts interval timing (that is, starts timing the interval time parameter b). When the timing reaches parameter b, the time relay KT starts forward timing, and the cycle repeats.

[0134] It should be noted that when the count relay BZ is 1, it indicates that the AC switch has executed one positioning and reversing cycle (i.e., including one positioning operation and one reversing operation). When the count relay BZ is n, where n is a natural number greater than 0, it indicates that the AC switch has executed n positioning and reversing cycles, each of which (also referred to as positioning and reversing operations) includes one positioning operation and one reversing operation.

[0135] In specific practice, when a user needs to test the number of times a certain model of DC switch performs the positioning and reversing work to see whether it can meet the user's requirements or the preset number of times (for example, 20,000 times) required by a certain work scenario, the utility model can be used to control the AC switch to repeatedly perform the positioning and reversing work (i.e., positioning and reversing action) for not less than the preset number of times (for example, 20,000 times); if after the execution is completed, no component damage problem of the AC switch occurs (the range of key components that are prone to damage problems can be defined as the judgment standard according to the user's needs), it is judged that the entire AC switch meets the pre-required service life (working life); otherwise (i.e., a failure or damage problem occurs in the middle), it is judged that it cannot meet the pre-required service life.

[0136] In addition, when it is necessary to specifically test the service life of a certain component in the AC switch machine and determine whether it meets the pre-designed number of actions, the present invention can also be used to control the AC switch machine to repeatedly perform the reverse position work (i.e., reverse position action) for not less than a preset number of times (e.g., 30,000 times); if after the execution is completed, if the component is damaged, broken, or has other faults, it is determined that the component of the AC switch machine cannot meet the pre-required service life and cannot meet the pre-designed number of actions; if no fault occurs, it is determined that the pre-required service life and the pre-designed number of actions can be met.

[0137] In summary, for the present invention, the A phase, B phase and C phase of the AC power supply E are connected to the internal terminals of the electric switch (AC switch) through the AC contactor, and the A phase and N line of the AC power supply E are connected to the electrical components such as the counting relay BZ, forward and reverse control relay (i.e., time relay KT), AC contactor 1KM, AC contactor 2KM and indicator light 1HL through the self-locking button S; when the self-locking button S is pressed, the power indicator light 1HL lights up, indicating that the test equipment of the present invention starts working; among them, the time relay KT can set the forward and reverse working time and interval time, and the counting relay BZ is used to record the working times of the electric switch.

[0138] After testing, the utility model can efficiently and reliably automatically control the AC switch to perform the positioning and reverse work, and automatically record the number of operations, which is conducive to the life test or running-in test of the AC switch components and the AC switch machine as a whole, and is conducive to understanding the service life of the AC switch machine and ensuring the operational reliability of the AC switch machine.

[0139] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A test device for a switch machine, characterized in that: It includes AC power supply E, AC circuit breaker QF, AC contactor 1KM, AC contactor 2KM, self-locking button S, counting relay BZ, time relay KT and indicator light 1HL; Phase A of the AC power source E is connected to the contact S1 of the self-locking button S and the internal terminal X1 of the AC switch through the AC circuit breaker QF. Phase B of the AC power source E is connected to contact L1 of AC contactor 1KM and contact L1 of AC contactor 2KM through AC circuit breaker QF; Phase C of the AC power source E is connected to contact L2 of AC contactor 1KM and contact L2 of AC contactor 2KM through AC circuit breaker QF; Among them, the contact T1 of the AC contactor 1KM is connected to the internal terminal X4 of the AC switch machine; The contact T2 of the AC contactor 1KM is connected to the internal terminal X3 of the AC switch machine; The contact T1 of the AC contactor 2KM is connected to the internal terminal X2 of the AC switch machine; The contact T2 of the AC contactor 2KM is connected to the internal terminal X5 of the AC switch machine; Among them, the contact S2 of the self-locking button S is connected to the node M; Node M is connected to contact B3 of counting relay BZ, contact K7 of time relay KT, delayed-off contact K8 of time relay KT, contact A1 of AC contactor 2KM, and contact H1 of indicator light 1HL respectively; The delayed disconnection contact K6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact B1 of the counting relay BZ respectively; Contact A2 of AC contactor 1KM is connected to contact B2 of counting relay BZ; The contact A2 of the AC contactor 2KM is connected to the delayed disconnect contact K3 of the time relay KT; Among them, the contact B4 of the counting relay BZ, the contact K2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact K1 of the time relay KT and the contact H2 of the indicator light 1HL are respectively connected at the node O through the wire convergence; The node O is connected to the neutral line N of the AC power source E through the AC circuit breaker QF.

2. The test equipment for a switch machine according to claim 1, characterized in that: Phase A of the AC power source E is connected to contact Q3 of the AC circuit breaker QF; The contact Q7 of the AC circuit breaker QF is connected to the contact S1 of the self-locking button S and the internal terminal X1 of the AC switch machine respectively; Phase B of the AC power source E is connected to contact Q2 of the AC circuit breaker QF; The contact Q6 of the AC circuit breaker QF is connected to the contact L1 of the AC contactor 1KM and the contact L1 of the AC contactor 2KM respectively; Phase C of the AC power source E is connected to contact Q1 of the AC circuit breaker QF; The contact Q5 of the AC circuit breaker QF is connected to the contact L2 of the AC contactor 1KM and the contact L2 of the AC contactor 2KM, respectively.

3. The test equipment for a switch machine according to claim 1, characterized in that: The neutral line N of the AC power source E is connected to the contact Q4 of the AC circuit breaker QF; Contact Q8 of AC circuit breaker QF is connected to node O.

4. The test equipment for a switch machine according to claim 1, characterized in that: Time relay KT is a cyclic reciprocating time relay with power-on delay and off-time.

5. The test equipment for a switch machine according to claim 1, characterized in that: On the time relay KT, a set time parameter value a as the forward delay time, a set time parameter value b as the interval time, and a set time parameter value c as the reverse delay time are preset.

6. The test equipment for a switch machine according to claim 1, characterized in that: The time relay KT is used to further control the working state of the AC contactor 1KM and the counting relay BZ by controlling the cyclic opening and closing of its own delayed opening contact K8 and contact K6; and further control the working state of the AC contactor 2KM by controlling the cyclic opening and closing of its own delayed opening contact K1 and contact K3; Among them, the contact K8 and contact K6, contact K1 and contact K3 of the time relay KT are all delayed-off contacts.

7. The test equipment for a switch machine according to claim 1, characterized in that: The AC contactor 1KM is used to further control the on-off of the AC power source E to the original AC motor reversing working circuit in the AC switch machine by switching on and off its own contacts L1 and T1, and contacts L2 and T2; The AC contactor 2KM is used to further control the on-off of the AC power supply E to the original AC motor forward working circuit in the AC switch machine through the on-off of its own contacts L1 and T1, and contacts L2 and T2.

8. The test equipment for a switch machine according to claim 1, characterized in that: AC circuit breaker QF, used to control the opening and closing of AC power source E; Among them, the contacts Q1 and Q5, the contacts Q2 and Q6, the contacts Q3 and Q7, and the contacts Q4 and Q8 of the AC circuit breaker QF are normally open contacts.

9. The test equipment for a switch machine according to claim 1, characterized in that: Self-locking button S is used to control the connection or disconnection of the working circuit of the counting relay BZ, time relay KT and indicator light 1HL; Among them, the contact S1 and the contact S2 of the self-locking button S are normally open contacts.

10. The test equipment for a switch machine according to any one of claims 1 to 9, characterized in that: AC switch machine, including AC motor D3; Among them, the coil U1 of the AC motor D3 is connected to the internal terminal X1 of the AC switch machine; The coil V1 of the AC motor D3 is connected to the contact K02 of the safety switch K of the AC switch machine. The contact K01 of the safety switch K of the AC point switch is connected to the contact D14 and the contact D44 of the contact group D2 of the AC point switch. The coil W1 of the AC motor D3 is connected to the contact D12 and the contact D42 of the AC switch machine's own contact group D2; The contact D11 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X4; The contact D13 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X3; The contact D43 in the AC switch machine's own contact group D2 is connected to the AC switch machine's internal terminal X2; The contact D41 in the AC point switch machine's own contact group D2 is connected to the internal terminal X5 of the AC point switch machine.

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