Testing equipment of switch machine

Abstract

The invention discloses test equipment of a switch machine. 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 S1, a counting relay BZ, a time relay KT and an indicator 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 S1. The device is scientific in design, and can conveniently and reliably control the alternating current switch machine to carry out positioning and anti-positioning work in combination with action logic of the alternating current switch machine, so that the service life of the alternating current switch machine is tested, the factory quality of the alternating current switch machine is guaranteed, and the working efficiency is improved. The service life requirements of different users and different working scenes on the communication switch machine are better met, and the communication switch machine has great practical significance.

Description

Technical Field

[0001] The invention relates to the technical field of railway turnout switching 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 switch the position of the switch, change the direction of the switch opening, lock the switch point rail, and reflect the position and status of the switch. It can well ensure driving safety, improve transportation efficiency, and improve the labor intensity of drivers.

[0003] The positions of turnouts are divided into fixed position and reverse position. The fixed position and reverse position are generally determined by the station according to the needs. In principle, the position leading to the straight line is fixed position. The fixed position of the turnout is the position where the turnout is usually located. It is the position where the turnout should remain open to a certain line except when it is used, cleaned, inspected or repaired; the reverse position of the turnout is another position that is temporarily changed according to the needs, and it is the position opened to another line. In order to switch the two positions of the turnout, a turnout switch device (i.e., a switch machine) needs to be installed at the turnout point rail.

[0004] At present, AC switch machines include ZDJ9 series AC switch machines, ZYJ7 series electro-hydraulic switch machines and other models, which have been widely used in railway stations. In order to ensure the product operation reliability of AC switch machines, it is necessary to conduct working life tests or running-in tests on AC switch machines, that is, to control the AC switch machines to perform reciprocating movements of the turnout (i.e., the work of positioning and reversing, specifically including: switching the turnout between the positioning and reversing 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 point rail of the turnout, so that the point rail of the turnout fits into or separates from the basic rail of the turnout, thereby realizing the switching of the turnout 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 the AC switch machine, ensure the factory quality of the AC switch machine, and meet the service life requirements of the AC switch machine for different users and different working scenarios, it is necessary to test the service life of the AC switch machine.

[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. Summary of the invention

[0008] The purpose of the present invention 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 present invention 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 S1, a counting relay BZ, a time relay KT and an indicator light 1HL;

[0010] Among them, the A phase of the AC power source E is connected to the contact 1 of the self-locking button S1 and the internal terminal X1 of the AC switch machine through the AC circuit breaker QF;

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

[0012] Phase C of the AC power source E is connected to the contact L2 of the AC contactor 1KM and the contact L2 of the AC contactor 2KM through the 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 2 of the self-locking button S1 is connected to the node M;

[0018] Node M is respectively connected to contact 3 of counting relay BZ, contact 7 of time relay KT, delayed disconnection contact 8 of time relay KT, contact A1 of AC contactor 2KM and contact 1 of indicator light 1HL;

[0019] The delayed disconnection contact 6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact 1 of the counting relay BZ respectively;

[0020] The contact A2 of the AC contactor 1KM is connected to the contact 2 of the counting relay BZ;

[0021] The contact A2 of the AC contactor 2KM is connected to the delayed disconnection contact 3 of the time relay KT;

[0022] Among them, the contact 4 of the counting relay BZ, the contact 2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact 1 of the time relay KT and the contact 2 of the indicator light 1HL are respectively connected at the node O through the wire confluence;

[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 present invention that, compared with the prior art, the present invention provides a test equipment for a switch machine, which is scientifically designed and can be combined with the action logic of the AC switch machine itself (i.e., 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 the AC switch machine for different users and different working scenarios, which has great practical significance.

[0025] By applying the present invention, the positioning and reverse work performed by the AC switch can be tested conveniently and reliably, which is helpful to understand the service life of the AC switch and ensure the product operation reliability of the AC switch.

[0026] After inspection, it was found that the present invention 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 inspection, the present invention can efficiently and reliably control the AC switch to perform the reverse position work and record the number of operations, and can meet the working 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 present invention;

[0029] Figure 2 A test device for a switch machine provided by the present invention, and an internal wiring schematic diagram of an AC switch machine tested;

[0030] Figure 3 A schematic diagram of an embodiment of supplying power to 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 invention;

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

[0033] Figure 6A control circuit diagram of an embodiment of a test device for a switch machine provided by the present invention is provided 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0035] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] See also Figures 1 to 6 The present invention 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 S1, a counting relay BZ, a time relay KT and an indicator light 1HL;

[0038] Among them, the A phase of the AC power source E is connected to the contact 1 of the self-locking button S1 and the internal terminal X1 of the AC switch machine through the AC circuit breaker QF;

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

[0040] Phase C of the AC power source E is connected to the contact L2 of the AC contactor 1KM and the contact L2 of the AC contactor 2KM through the 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 2 of the self-locking button S1 is connected to the node M;

[0046] Node M is respectively connected to contact 3 of counting relay BZ, contact 7 of time relay KT, delayed disconnection contact 8 of time relay KT, contact A1 of AC contactor 2KM and contact 1 of indicator light 1HL;

[0047] The delayed disconnection contact 6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact 1 of the counting relay BZ respectively;

[0048] The contact A2 of the AC contactor 1KM is connected to the contact 2 of the counting relay BZ;

[0049] The contact A2 of the AC contactor 2KM is connected to the delayed disconnection contact 3 of the time relay KT;

[0050] Among them, the contact 4 of the counting relay BZ, the contact 2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact 1 of the time relay KT and the contact 2 of the indicator light 1HL are respectively connected at the node O through the wire confluence;

[0051] The node O is connected to the neutral line N (ie, N line) of the AC power source E through an 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 invention, 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 device provided by the present invention;

[0054] The self-locking button S1, 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 present invention.

[0055] In the present invention, in a specific implementation, phase A of the AC power source E is connected to contact 3 of the AC circuit breaker QF;

[0056] The contact 7 of the AC circuit breaker QF is connected to the contact 1 of the self-locking button S1 and the internal terminal X1 of the AC switch machine respectively;

[0057] Phase B of the AC power source E is connected to contact 2 of the AC circuit breaker QF;

[0058] The contact 6 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 1 of the AC circuit breaker QF;

[0060] The contact 5 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 4 of the AC circuit breaker QF;

[0062] The contact 8 of the AC circuit breaker QF is connected to the 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 machine are explained below.

[0064] As a device for switching railway turnouts, the AC switch machine is a well-known railway device with mature prior art, for example, it can be a ZDJ9 AC switch machine produced by Tianjin Railway Signal Co., Ltd.

[0065] The function of the AC switch is to use the AC motor on it to pull the pull rod on the turnout through the transmission mechanism to drive the turnout point rail, so that the turnout point rail fits or separates with the turnout base rail, thereby realizing the switch position, that is, realizing the switch from the fixed position to the reverse position, or from the reverse position to the fixed position. In other words, the switch is an important signal infrastructure equipment that changes the position of the turnout, changes the direction of the 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 itself;

[0069] The contact K01 of the safety switch K of the AC switch machine itself is connected to the contact 14 and the contact 44 of the contact group D2 of the AC switch machine itself;

[0070] The coil W1 of the AC motor D3 is connected to the contact 12 and the contact 42 in the contact group D2 of the AC switch machine itself;

[0071] The contact 11 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X4 of the AC switch machine;

[0072] The contact 13 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X3 of the AC switch machine;

[0073] The contact 43 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X2 of the AC switch machine;

[0074] The contact 41 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X5 of the AC switch machine;

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

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

[0077] In addition, it should be noted that the AC switch machine is a type of switch machine driven by an AC motor; when the switch machine is initially set to be positioned (i.e., performing positioning work on the turnout), the contacts 11 and 12 in the AC switch machine's own (i.e., self-contained) contact group D2 are closed, the contacts 13 and 14 are closed, the contacts 41 and 42 in the AC switch machine's own (i.e., self-contained) contact group D2 are disconnected, and the contacts 43 and 44 are disconnected;

[0078] When the switch machine is reversed (i.e., the turnout is reversed), the contacts 41 and 42 in the switch machine's own (i.e., self-contained) contact group D2 are closed, the contacts 43 and 44 are closed, the contacts 11 and 12 are disconnected, and the contacts 13 and 14 are disconnected;

[0079] When the coil U1 of the AC motor D3 of the AC switch machine is connected to the A phase of the AC power source E, the coil W1 of the AC motor D3 is connected to the B phase of the AC power source E, and the coil V1 of the AC motor is connected to the C phase of the 380V AC power source E, the rotor of the AC motor D3 is driven to reverse, so that the AC switch machine is operated from the positioning state to the reverse state (that is, the turnout connected to the AC switch machine is switched from the positioning state to the reverse state). At this time, the contacts 11 and 12 in the contact group D2 of the switch machine itself are disconnected, the contacts 13 and 14 are disconnected, the contacts 41 and 42 are closed, and the contacts 43 and 44 are closed;

[0080] When the coil U1 of the AC motor D3 of the AC switch 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 is driven to rotate forward, so that the AC switch runs from the reverse position to the positioned state (that is, the turnout connected to the AC switch is switched from the reverse position state to the positioned state). At this time, the contacts 11 and 12 in the contact group D2 of the switch machine itself are closed, the contacts 13 and 14 are closed, the contacts 41 and 42 are disconnected, and the contacts 43 and 44 are disconnected.

[0081] In the present invention, in specific implementation, the time relay KT is a cyclic reciprocating time relay of the power-on delay disconnection type;

[0082] In a specific implementation, a set time parameter value a as a forward delay time, a set time parameter value b as an interval time, and a set time parameter value c as a 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, for example, a forward and reverse control time relay of model JZF-10 produced by Delixi Electric Co., Ltd. can be used;

[0085] In the present invention, the time relay KT has the following functions: by utilizing its forward timing, interval, reverse timing and reciprocating functions, it is used to further control the working state of the AC contactor 1KM and the counting relay BZ by controlling its own delayed disconnection of the contact 8 and the contact 6 to cyclically open and close; and by controlling its own delayed disconnection of the contact 1 and the contact 3 to cyclically open and close, to further control the working state of the AC contactor 2KM.

[0086] Among them, contact 8 and contact 6, contact 1 and contact 3 of time relay KT are all delayed disconnection contacts.

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

[0088] After the contact 7 and contact 2 of the time relay KT are connected to the power supply, the time relay KT starts to work by power supply, that is, the forward delay time starts to be measured, at this time, the delayed disconnection contact 8 and contact 6 of the time relay KT are connected, when the time relay KT counts to the set time parameter value a of the forward delay time, the interval time starts to be measured immediately (that is, the interval time parameter b is started to be measured), at this time, the delayed disconnection contact 8 and contact 6 of the time relay KT are disconnected;

[0089] When the time relay KT times the set time parameter value b of the interval time, the reverse delay time timing starts, and at this time, the delayed disconnection contact 1 and contact 3 of the time relay KT are connected. When the time relay KT times the set time parameter value c of the reverse delay time, the interval time timing starts immediately (that is, the interval time parameter b timing starts), and at this time, the delayed disconnection contact 1 and contact 3 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 to be counted 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 technology in the prior art, for example, it can be a counting relay of model JDM11-6H produced by Shanghai Jiakong Instrument Co., Ltd.;

[0093] In the present invention, the counting relay BZ is used to record the number of actions of the electric switch from the positioning position to the reverse position.

[0094] It should be noted that the working principle of the counting relay BZ is: after the contacts 3 and 4 of the counting relay BZ are connected to the power supply, the counting relay BZ starts to be energized and work; each time the contacts 1 and 2 of the counting relay BZ detect a voltage signal, the counting relay BZ counts a number;

[0095] It should be noted that, in the present invention, the A phase and N line of the AC power supply E input a voltage signal to the contact 1 and contact 2 of the counting relay BZ through the delayed disconnection contact 6 and the closing of the contact 8 of the time relay KT, and each time the delayed disconnection contact 6 and the contact 8 of the time relay KT are closed, a voltage signal is input once to the contact 1 and the contact 2 of the counting relay BZ, and the number of counts of the counting relay BZ is increased by one.

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

[0097] In the present invention, the AC contactors 1KM and 2KM are well-known electrical components in the prior art, for example, they may be the CJX2S-1210M AC contactors 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 supply power 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 through the on-off of its own contact L1 and contact T1, contact L2 and contact T2;

[0100] It should be noted that the working principles of AC contactors 1KM and 2KM are the same, specifically: the contacts A1 and A2 of the AC contactor are input control terminals, and the contacts L1 and T1, and the contacts L2 and T2 of the AC contactor are output execution terminals; when the contacts A1 and A2 of the AC contactor are connected to an AC signal, the internal coil current of the AC contactor will generate a magnetic field, causing the static iron core to generate an electromagnetic attraction to attract the moving iron core, and drive the AC contactor contacts to move, so that the normally open contacts L1 and T1, and contacts L2 and T2 of the AC contactor are closed. When the AC signal connected to the 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, and then the normally open contacts L1 and T1, and contacts L2 and T2 of the AC contactor are disconnected.

[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 contactor 1KM, AC contactor 2KM and other operating electrical components start to supply 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, contact 1 and contact 5, contact 2 and contact 6, contact 3 and contact 7, and contact 4 and contact 8 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: the contacts 1 and 5, the contacts 2 and 6, the contacts 3 and 7, the contacts 4 and 8 of the circuit breaker are normally open contacts. After the circuit breaker is closed, the contacts 1 and 5, the contacts 2 and 6, the contacts 3 and 7, the contacts 4 and 8 of the circuit breaker are connected;

[0107] The AC circuit breaker QF is based on the principle of thermal magnetic trigger, which is composed of thermal element and magnetic element. The thermal element generates heat when the current passes through it. When the current exceeds the set value, the thermal element will expand, causing the magnetic element to operate and cut off the circuit. The magnetic element generates a magnetic field when the current passes through it. When the current exceeds the set value, the magnetic element is affected by the magnetic field and operates to cut off 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 works normally, the AC circuit breaker QF is in a closed state, that is, the contacts 1 and 5, the contacts 2 and 6, the contacts 3 and 7, and the contacts 4 and 8 of the circuit breaker are connected, and the current passes through the conductor 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 will be quickly disconnected. Contacts 1 and 5, contacts 2 and 6, contacts 3 and 7, and contacts 4 and 8 of the circuit breaker will be disconnected, thereby disconnecting the execution circuit.

[0110] See also Figure 4 As shown, the self-locking button S1 is pressed, the contact 1 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 source E through the contact 2 and contact 1 of the self-locking button S1;

[0111] The contact 2 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 operation control electrical element in the present invention 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 S1 are explained below.

[0113] In the present invention, the self-locking button S1 is a well-known device in the prior art, for example, it can be a self-locking button of model LAY7-11DZS produced by Delixi Electric Co., Ltd.;

[0114] In the present invention, the self-locking button S1 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, contact 1 and contact 2 of the self-locking button S1 are normally open contacts;

[0116] It should be noted that the working principle of the self-locking button S1 is: after being pressed and released, the self-locking button is held by its own locking mechanism, and the contact 1 and the contact 2 of the self-locking button S1 can be closed. At this time, in the present invention, the self-locking button S1 is used to open the working circuit of the operation control electrical element (specifically including the counting relay BZ, the time relay KT and the indicator light 1HL) in the present invention;

[0117] After pressing and releasing again, the self-locking button's own locking mechanism is disconnected, and the contacts 1 and 2 of the self-locking button S1 are disconnected. At this time, 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 invention is closed.

[0118] It should be noted that when the self-locking button S1 is pressed to turn on the working circuit of the operation control electrical components (specifically including the counting relay BZ, the time relay KT and the indicator light 1HL), the contact 3 of the counting relay BZ is connected to the A phase of the AC power supply E through the node M, the contact 2 and the contact 1 of the self-locking button S1, and the contact 4 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 powered on and work;

[0119] At the same time, contact 7 of time relay KT is connected to phase A of AC power supply E through node M, contact 2 and contact 1 of self-locking button S1, and contact 2 of time relay KT is connected to line N of 380V AC power supply E through node O. At this time, time relay KT is energized and works.

[0120] See also Figure 5As shown, after the time relay KT is energized, the time relay KT starts to time forward, and at the same time, the delayed disconnection contact 8 and contact 6 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 disconnection contact 6 and contact 8 of the time relay KT, the node M, the contact 2 and contact 1 of the self-locking button S1; 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, the AC contactor 1KM is energized at this time, thereby closing the contacts L1 and contact T1 of the AC contactor 1KM, and closing the contacts L2 and contact T2.

[0121] See also Figure 2 As shown, for the present invention, the initial state of the AC switch machine is set to the positioning state, that is, the contacts 11 and 12, contacts 13 and contacts 14 in the contact group D2 of the AC switch machine itself (i.e., the self-contained) are in the closed state, the contacts 41 and 42 in the contact group D2 of the AC switch machine itself (i.e., the self-contained) are disconnected, and the contacts 43 and contacts 44 are in the disconnected state;

[0122] When the coil U1 of the AC motor D3 of the AC switch machine itself (i.e., built-in) is connected to the A phase of the AC power source E through the terminal X1 in the terminal group D1 of the AC switch machine, the contact 7 and the contact 3 of the AC circuit breaker QF, the coil W1 of the AC motor D3 is connected through the contact 12 and the contact 11 of the contact group D2 of the AC switch machine itself (i.e., built-in), the terminal X4 in the terminal group D1 of the AC switch machine, the contact T1 and the contact L1 of the contactor 1KM, and the contact of the AC circuit breaker QF. Point 6 and contact 2 are connected to the B phase of the AC power source E. The coil V1 of the AC motor D3 is connected to the C phase of the AC power source E through the contacts 14 and 13 of the AC switch machine's own (i.e., self-contained) contact group D2, the terminal X3 in the AC switch machine's internal terminal group D1, the contact T2 and contact L2 of the contactor 1KM, and the contact 5 and contact 1 of the AC circuit breaker QF. At this time, the AC motor D3 of the AC switch machine itself starts to reverse, converting the AC switch machine from the positioning position to the reverse position;

[0123] At the same time, the contact 1 of the counting relay BZ is connected to the A phase of the AC power source E through the delayed disconnection of the contact 6 and the contact 8 of the time relay KT, the node M, the contact 2 and the contact 1 of the self-locking button S1, and the contact 2 of the counting relay BZ is connected to the N line of the AC power source E through the node O, and 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 is used as a power source, which 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 point rail of the turnout, so that the point rail of the turnout is in contact with or separated from the basic rail of the turnout, thereby realizing the switching of the turnout position, that is, realizing the switching from the fixed position to the reverse position, or from the reverse position to the fixed 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 starts to rotate forward, and the AC switch machine is operated from the reverse position (i.e. switched) to the fixed position.

[0125] See also Figure 5 As shown, when the AC switch machine runs to the reverse position, the contact 12 and the contact 11 in the contact group D2 of the AC switch machine itself are disconnected, and the contact 14 and the contact 13 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 reversing;

[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 starts (that is, the timing of the interval time parameter b starts), and the delayed disconnection contacts 6 and 8 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 6 and 8 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, when the time relay KT times to the interval time parameter b, the time relay KT starts to time in reverse, and at the same time, the delayed disconnection contact 1 and contact 3 of the time relay KT are closed; at this time, the AC switch machine is in the reverse position, and the contacts 41 and 42, contacts 43 and contacts 44 in the contact group D2 of the AC switch machine itself are in the closed state, and the coil U1 of the AC motor D3 of the AC switch machine itself 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 machine, the contact 7 and contact 3 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 contacts 12 and contacts 43 of the contact group D2 of the AC switch machine itself (i.e., it comes with it). 2 and contact 41, terminal X5 in the machine terminal group D1 of the AC switch machine, contact T2 and contact L2 of contactor 2KM, contact 5 and contact 1 of circuit breaker QF are connected to the C phase of the AC power source E, and the coil V1 of the AC motor D3 is connected to the B phase of the AC power source E through the contact 14, contact 44 and contact 43 of the AC switch machine's own (i.e., self-contained) contact group D2, terminal X2 in the machine terminal group D1 of the AC switch machine, contact T2 and contact L2 of contactor 2KM, contact 6 and contact 2 of AC circuit breaker QF. At this time, the AC motor D3 of the AC switch machine itself starts to rotate forward, thereby running the AC switch machine from the reverse position to the positioning position;

[0128] In the present invention, 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 machine from the reverse position to the fixed position; when the AC switch machine runs from the reverse position to the fixed position, the time relay KT times 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 3 and contact 1 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 contacts 1 and 3 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 forward timing again, and at the same time, the delayed disconnection contact 8 and contact 6 of the time relay KT are closed again; in this process, the contact 1 and contact 2 of the indicator light 2HL, the contact A1 and contact A2 of the AC contactor 1KM, and the counting relay contact 1 and contact 2 are closed through the delayed disconnection contact 8 and contact 6 of the time relay KT, so that the power is turned on again;

[0130] Since the contacts A1 and A2 of the AC contactor 1KM are powered on, the contacts L1 and T1 of the AC contactor 1KM are closed, and the contacts L2 and T2 are closed, thus connecting the reverse working circuit of the AC motor coil, and the AC motor D3 of the AC switch machine itself starts to reverse, and the AC switch machine runs from the positioning position to the reverse position. In this process, the count of the counting relay BZ is increased by 1;

[0131] When the time relay KT reaches the set time parameter value a again, the interval timing starts immediately (i.e., 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 3 and contact 1 of the time relay KT are closed again; in this process, the contact A1 and contact A2 of the AC contactor 2KM are connected to the power supply again through the delayed disconnection contact 1 and contact 3 of the time relay KT;

[0132] Since the contacts L1 and T1, and contacts L2 and T2 of the AC contactor 2KM are closed and the power is turned on, the forward working circuit of the AC motor D3 of the AC switch machine is turned on, and the AC motor D3 of the AC switch machine itself starts to rotate forward, and the AC switch machine is operated 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 of the counting relay BZ is 1, it means that the AC switch has executed one cycle of positioning and reversing (i.e., including one positioning operation and one reversing operation). When the count of the counting relay BZ is n, where n is a natural number greater than 0, it means that the AC switch has executed n cycles of positioning and reversing, and each cycle of positioning and reversing (also called positioning and reversing operation) includes one positioning operation and one reversing operation.

[0135] In specific practice, when a user needs to test whether the number of times a certain model of DC switch performs the reverse position work can meet the preset number of times (for example, 20,000 times) required by the user or a certain work scenario, the present invention can be used to control the AC switch to repeatedly perform the reverse position work (i.e., reverse position action) for not less than the preset number of times (for example, 20,000 times); if after the execution, 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 needs of the user), it is judged that the entire AC switch meets the pre-required service life (working life); otherwise (i.e., failure or damage occurs midway), it is judged that the pre-required service life cannot be met.

[0136] In addition, when it is necessary to test the service life of a certain component in the AC switch machine in a targeted manner to 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, 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 component can meet the pre-required service life and meet the pre-designed number of actions.

[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 machine (AC switch machine) through the AC contactor, and the A phase and N line of the AC power supply E are connected to electrical components such as the counting relay BZ, the forward and reverse control relay (i.e., the time relay KT), the AC contactor 1KM, the AC contactor 2KM and the indicator light 1HL through the self-locking button S1; when the self-locking button S1 is pressed, the power indicator light 1HL lights up, indicating that the test equipment of the present invention starts working; wherein, 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 machine.

[0138] After inspection, the present invention can efficiently and reliably automatically control the AC switch to perform the reverse positioning work, and automatically record the number of operations, which is beneficial to carry out life tests or running-in tests on the AC switch machine components and the AC switch machine as a whole, and is beneficial to grasp the service life of the AC switch machine and ensure 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 principle of the present invention. These improvements and modifications should also be regarded as 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 S1, counting relay BZ, time relay KT and indicator light 1HL; Among them, the A phase of the AC power source E is connected to the contact 1 of the self-locking button S1 and the internal terminal X1 of the AC switch machine through the AC circuit breaker QF; Phase B of the AC power source E is connected to the contact L1 of the AC contactor 1KM and the contact L1 of the AC contactor 2KM through the AC circuit breaker QF; Phase C of the AC power source E is connected to the contact L2 of the AC contactor 1KM and the contact L2 of the AC contactor 2KM through the 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 2 of the self-locking button S1 is connected to the node M; Node M is respectively connected to contact 3 of counting relay BZ, contact 7 of time relay KT, delayed disconnection contact 8 of time relay KT, contact A1 of AC contactor 2KM and contact 1 of indicator light 1HL; The delayed disconnection contact 6 of the time relay KT is connected to the contact A1 of the AC contactor 1KM and the contact 1 of the counting relay BZ respectively; The contact A2 of the AC contactor 1KM is connected to the contact 2 of the counting relay BZ; The contact A2 of the AC contactor 2KM is connected to the delayed disconnection contact 3 of the time relay KT; Among them, the contact 4 of the counting relay BZ, the contact 2 of the time relay KT, the contact A2 of the AC contactor 1KM, the delayed disconnection contact 1 of the time relay KT and the contact 2 of the indicator light 1HL are respectively connected at the node O through the wire confluence; 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 the switch machine according to claim 1, characterized in that: Phase A of the AC power source E is connected to contact 3 of the AC circuit breaker QF; The contact 7 of the AC circuit breaker QF is connected to the contact 1 of the self-locking button S1 and the internal terminal X1 of the AC switch machine respectively; Phase B of the AC power source E is connected to contact 2 of the AC circuit breaker QF; The contact 6 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 1 of the AC circuit breaker QF; The contact 5 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 or 2, characterized in that: The neutral line N of the AC power source E is connected to the contact 4 of the AC circuit breaker QF; The contact 8 of the AC circuit breaker QF is connected to the node O.

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

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 a forward delay time, a set time parameter value b as an interval time, and a set time parameter value c as a 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 its own delayed disconnection of the contact 8 and the contact 6 to open and close cyclically; and to further control the working state of the AC contactor 2KM by controlling its own delayed disconnection of the contact 1 and the contact 3 to open and close cyclically; Among them, contact 8 and contact 6, contact 1 and contact 3 of time relay KT are all delayed disconnection 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 through the on-off of its own contact L1 and contact T1, contact L2 and contact 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 contact L1 and contact T1, contact L2 and contact T2.

8. The test equipment for a switch machine according to claim 1, characterized in that: The AC circuit breaker QF is used to control the opening and closing of the AC power source E. Among them, contact 1 and contact 5, contact 2 and contact 6, contact 3 and contact 7, and contact 4 and contact 8 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 S1 is used to control the connection or disconnection of the working circuit of the counting relay BZ, the time relay KT and the indicator light 1HL; Among them, contact 1 and contact 2 of the self-locking button S1 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 itself; The contact K01 of the safety switch K of the AC point switch machine itself is connected to the contact 14 and the contact 44 of the contact group D2 of the AC point switch machine itself; The coil W1 of the AC motor D3 is connected to the contact 12 and the contact 42 in the contact group D2 of the AC switch machine. The contact 11 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X4 of the AC switch machine; The contact 13 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X3 of the AC switch machine; The contact 43 in the contact group D2 of the AC switch machine itself is connected to the internal terminal X2 of the AC switch machine; The contact 41 in the contact group D2 of the AC point switch machine itself is connected to the internal terminal X5 of the AC point switch machine.

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