Direct current switch machine operation test device

Abstract

The utility model provides a direct current switch machine operation test device, comprising a direct current action circuit and a direct current indication circuit, the direct current action circuit is used for controlling the direct current switch machine to carry out positioning or / and anti-position action, and the direct current indication circuit is used for indicating the positioning or anti-position state of the direct current switch machine. The power input end of the direct-current action circuit and the power input end of the direct-current indication circuit are both connected with the mobile power source, and the power output end of the direct-current action circuit and the power output end of the direct-current indication circuit are connected in parallel and then connected with the wire inlet end of the direct-current switch machine. The limitation of the connection mode of a mechanical fixed power supply and a mechanical fixed control circuit is eliminated, the action test and the state representation of the direct current switch machine can be realized on the installation construction site of the switch machine, the process of temporarily pulling the power supply or carrying the generator is avoided in the construction process, the carrying is convenient, and the operation is convenient. After each switch machine is installed on site, timely power transmission test can be ensured, the construction efficiency is improved, and the product quality and reliability are ensured.

Description

Technical Field

[0001] This utility model relates to the field of equipment testing, and in particular to a DC switch machine operation test device. Background Technology

[0002] Switch machines are crucial equipment for turnout switching in railway signaling. They are heavy, complex in structure, and require high precision; impacts and changes in temperature and humidity can affect their stability. After production, switch machines are sent to the electrical maintenance depot for quality testing, or the depot assigns personnel to the factory to conduct electrical and mechanical tests. After testing, they are transported to the construction site for installation. However, during transportation, unseen damage to the switch machine's mechanics and circuitry is inevitable (internal components may be damaged by impacts during transport). Therefore, the switch machine must be tested again after arriving at the installation site.

[0003] Currently, in existing station renovation construction sites or new station construction processes, it is generally necessary to wait until the construction of the new machine room is completed and the machine room has a temporary voltage stabilizer and the outdoor cable laying is completed before the turnout switch machine can be tested. Alternatively, the switch machine can be tested by temporarily pulling the power supply over a long distance or by moving the generator to disconnect the control circuit. Therefore, the indoor and outdoor environments at the current installation and construction sites cannot be used to test the switch machine without power supply testing, and it is also impossible to test parameters and related status indications. Utility Model Content

[0004] To address the aforementioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] According to one aspect of this application, a DC switch machine operation test apparatus is provided, comprising:

[0006] DC operating circuit, used to control DC switch machine to perform positioning and / or reversing operations;

[0007] A DC indicator circuit is used to indicate the positioning or reversing state of a DC switch machine.

[0008] The power input terminals of both the DC operating circuit and the DC indicator circuit are connected to the mobile power supply. The power output terminals of the DC operating circuit and the DC indicator circuit are connected in parallel and then connected to the input terminal of the DC switch machine.

[0009] In one exemplary embodiment of this application, the DC display circuit is connected to a mobile power supply via a display circuit conversion transformer. The primary side of the display circuit conversion transformer is connected to the mobile power supply, and the secondary side of the display circuit conversion transformer is connected to the DC display circuit.

[0010] In one exemplary embodiment of this application, the DC operating circuit includes:

[0011] A switching power supply, connected to a mobile power supply, is used to convert the first AC voltage output by the mobile power supply into a first DC voltage for the operation of the DC switch machine;

[0012] The fourth switch K4 is connected to the switching power supply and the DC switch machine. It is used to transmit the first DC voltage to the positioning action circuit or the reversing action circuit of the DC switch machine so that the DC switch machine can perform positioning action or reversing action.

[0013] In one exemplary embodiment of this application, the DC display circuit includes:

[0014] The fifth switch K5 is connected to the secondary side of the circuit conversion transformer and the DC switch machine, and is used to control the conduction or cutoff between the circuit conversion transformer and the DC switch machine.

[0015] The sixth switch K6 is connected to the secondary side of the indicator circuit conversion transformer and the fifth switch K5, and is used to transmit the voltage output by the indicator circuit conversion transformer to the positioning indicator circuit or the reversing indicator circuit of the DC switch machine.

[0016] The second reverse position indicator relay is connected to the secondary side of the indicator circuit conversion transformer and the reverse position indicator circuit of the DC switch machine, and is used to indicate the reverse position state of the DC switch machine.

[0017] The second positioning relay is connected to the secondary side of the circuit conversion transformer and the positioning indication circuit of the DC switch machine, and is used to indicate the positioning status of the DC switch machine.

[0018] In one exemplary embodiment of this application, the fourth switch K4 includes a fourth switch contact K41, a fourth switch contact K42, and a fourth switch contact K43. The fourth switch contact K41 is connected to the positioning action circuit of the DC switch machine, the fourth switch contact K42 is empty, and the fourth switch contact K43 is connected to the reversing action circuit of the DC switch machine.

[0019] In one exemplary embodiment of this application, the fifth switch K5 includes a fifth switch contact K51, a fifth switch contact K52, and a fifth switch contact K53. The fifth switch contact K51 is connected to the reverse position indication circuit of the DC switch machine, the fifth switch contact K52 is connected to the position indication circuit of the DC switch machine, and the fifth switch contact K53 is connected to the secondary side of the indication circuit conversion transformer.

[0020] In one exemplary embodiment of this application, the sixth switch K6 includes a sixth switch contact K61, a sixth switch contact K62, and a sixth switch contact K63. The sixth switch contact K61 is connected to the fifth switch contact K51, the sixth switch contact K62 is empty, and the sixth switch contact K63 is connected to the fifth switch contact K52.

[0021] In one exemplary embodiment of this application, the second reverse position indicator relay is disposed on the branch between the sixth switch contact K61 and the secondary side of the indicator circuit conversion transformer.

[0022] In one exemplary embodiment of this application, the second positioning relay is disposed on the branch between the sixth switch contact K63 and the secondary side of the indicating circuit conversion transformer.

[0023] In one exemplary embodiment of this application, a DC voltmeter is provided on the branch where the switching power supply and the fourth switch K4 are connected.

[0024] This utility model has at least the following beneficial effects:

[0025] This utility model discloses a DC switch machine operation test device, comprising a DC operating circuit and a DC indicating circuit. The DC operating circuit controls the DC switch machine to perform positioning and / or reversing actions, while the DC indicating circuit indicates the positioning or reversing status of the DC switch machine. The power input terminals of both the DC operating circuit and the DC indicating circuit are connected to a portable power source. The power output terminals of the DC operating circuit and the DC indicating circuit are connected in parallel and then connected to the input terminal of the DC switch machine. Based on the standard automatic control circuit and indicating circuit of a DC switch machine, a simplified manual control circuit with complete detection and testing functions is designed and manufactured, and an external portable power source is used to power the switch machine. It provides power, and the accompanying portable power bank is an outdoor charging power source with a suitable size and weight. The DC operating circuit and DC indication circuit are independent units with the portable power bank, which can be plugged in on-site. It is convenient to carry and use, and gets rid of the limitations of mechanical fixed power supply and mechanical fixed control circuit connection methods. It can realize the operation test and status indication of DC switch machine on the installation and construction site of switch machine, to test the rotation of DC switch machine and the correctness of indication circuit. It eliminates the need to temporarily pull power supply or move generator during construction. It is easy to carry and ensures that each switch machine can be powered on for testing in time after on-site installation, improving construction efficiency and ensuring product quality and reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A block diagram illustrating the composition of the DC switch machine operation test device provided in this embodiment of the utility model;

[0028] Figure 2 Circuit diagram of the DC switch machine operation test device provided in this embodiment of the utility model;

[0029] Figure 3 A block diagram illustrating the composition of the AC / DC switch machine operation test device provided in this embodiment of the utility model;

[0030] Figure 4 The circuit diagram of the AC switch machine operation test device provided in this embodiment of the utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1 As shown, a DC switch machine operation test device includes a DC operating circuit, a DC indicating circuit, a mobile power supply, and an indicating circuit conversion transformer. The power input terminal of the DC operating circuit is connected to the mobile power supply. The power input terminal of the DC indicating circuit is connected to the mobile power supply through the indicating circuit conversion transformer. The primary side of the indicating circuit conversion transformer is connected to the mobile power supply, and the secondary side of the indicating circuit conversion transformer is connected to the DC indicating circuit. The power output terminals of the DC operating circuit and the DC indicating circuit are connected in parallel and then connected to the input terminal of the DC switch machine.

[0033] The DC operating circuit is used to control the DC switch machine to perform positioning and / or reversing operations. The DC indicating circuit is used to indicate the positioning or reversing status of the DC switch machine. The indicating circuit conversion transformer is used to convert the voltage output by the mobile power supply into the voltage applied by the DC indicating circuit.

[0034] Furthermore, the power bank can be a rechargeable and portable 220V AC power source, making it convenient for test personnel to carry and test. The DC switch machine is the switch machine that needs to be tested.

[0035] The DC switch machine is equipped with a positioning action circuit, a reversing action circuit, a positioning indication circuit, and a reversing indication circuit. The positioning action circuit and the reversing action circuit are connected to the motor of the DC switch machine. The positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit all adopt the internal circuit of existing DC switch machines (such as the ZD6 electric switch machine). They have overlapping branches, and the combined circuit of the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit (i.e., the internal system circuit of the DC switch machine) has several external line interfaces. The DC switch machine operation test device can perform positioning and reversing tests with the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit of the DC switch machine through the external line interfaces. The positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit of the DC switch machine in this application adopt the circuit of existing DC switch machines, so they will not be described in detail here.

[0036] When the positioning action circuit is activated, the motor drives the mechanical part of the DC switch machine to control the switch rail to the positioning state. When the reversing action circuit is activated, the motor drives the mechanical part of the DC switch machine to control the switch rail to the reversing state. When the positioning indication circuit is activated, it indicates that the switch rail has completed the positioning action. By checking the feedback signal of the positioning indication circuit, it is determined whether the switch rail is in the standard position of the positioning state (e.g., whether the switch rail is in contact with the stock rail). Similarly, when the reversing indication circuit is activated, it indicates that the switch rail has completed the reversing action. By checking the feedback signal of the reversing indication circuit, it is determined whether the switch rail is in the standard position of the reversing state. The positioning state is the normal state of the switch rail, and the reversing state is the state of the switch rail when it is temporarily changed as needed.

[0037] like Figure 2 As shown, the DC operating circuit includes a switching power supply, a fourth switch K4, a DC voltmeter, circuit breaker RD6 (i.e., an air switch), and circuit breaker RD7; wherein, the switching power supply is connected to the power bank, and the switching power supply is a rectifier used to convert the first AC voltage (e.g., ...) output by the power bank into a rectifier. Figure 2 The AC 220V voltage is converted into the first DC voltage (such as...) to power the DC switch machine. Figure 2The first DC voltage is transmitted to the positioning or reversing circuit of the DC switch machine, so that the DC switch machine can perform positioning or reversing actions. A DC voltmeter is set on the branch line connecting the switching power supply and the fourth switch K4. By checking the DC voltmeter, it can be determined whether the output voltage of the switching power supply is stable.

[0038] Most current DC switch machines have four or six external line interfaces, meaning that DC switch machines have four or six input terminals. For ease of understanding, this application sets the output terminals of the DC operating circuit and the DC indication circuit to six.

[0039] Generally, the six input terminals of a DC switch machine are connected to the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit, respectively. Therefore, to further explain, as... Figure 2 As shown, this application configures the X2 and X6 ports of the DC switch machine to be connected to the positioning action circuit, the X1 and X5 ports of the DC switch machine to be connected to the reversing action circuit, the X1 port of the DC switch machine to be connected to the reversing indication circuit, the X2 port of the DC switch machine to be connected to the positioning indication circuit, the X4 port of the DC switch machine to be a common return line port for the positioning action circuit and the reversing action circuit, and the X3 port of the DC switch machine to be a common return line port for the positioning indication circuit and the reversing indication circuit.

[0040] Specifically, the fourth switch K4 is a position / reverse operation changeover switch. The fourth switch K4 has three sets of simultaneously operating contacts. Each set of contacts includes the fourth switch contact K41, the fourth switch contact K42, and the fourth switch contact K43. The fourth switch contact K41 is connected to the positioning operation circuit of the DC switch machine. Figure 2 Connect the X2 and X6 ports in the circuit, set the fourth switch contact K42 to empty, and connect the fourth switch contact K43 to the reverse operation circuit of the DC switch machine. Figure 2 Connect via X1 and X5 ports.

[0041] Therefore, the fourth switch K4 is a three-position rotary switch. When the fourth switch K4 is rotated to the fourth switch contact K41, it is in the positioning position. The first DC voltage output by the switching power supply is transmitted to the positioning circuit of the DC switch machine through the fourth switch K4, so that the positioning circuit of the DC switch machine is turned on and the DC switch machine performs the positioning action. When the fourth switch K4 is rotated to the fourth switch contact K42, it is in the neutral position, so that the first DC voltage output by the switching power supply is not transmitted to the DC switch machine and the DC switch machine does not operate. When the fourth switch K4 is rotated to the fourth switch contact K43, it is in the reverse position. The first DC voltage output by the switching power supply is transmitted to the reverse position circuit of the DC switch machine through the fourth switch K4, so that the reverse position circuit of the DC switch machine is turned on and the DC switch machine performs the reverse position action.

[0042] like Figure 2 As shown, the DC indicator circuit includes a fifth switch K5, a sixth switch K6, a second reverse position indicator relay, a second position indicator relay, circuit breakers RD4 and RD5, a resistor R2, and a capacitor C1; wherein, the fifth switch K5 is connected to the indicator circuit conversion transformer ( ) through circuit breaker RD4 and resistor R2. Figure 2 The secondary side of the second switch (BB) is connected to the DC switch machine. The output of the fifth switch K5 is connected to the input of the DC switch machine. The fifth switch K5 is used to control the conduction or cutoff between the indicator circuit conversion transformer and the DC switch machine. The sixth switch K6 is connected to the secondary side of the indicator circuit conversion transformer through capacitor C1. The output of the sixth switch K6 is connected to the input of the fifth switch K5. The sixth switch K6 is used to transmit the voltage output by the indicator circuit conversion transformer to the positioning indicator circuit or the reverse position indicator circuit of the DC switch machine through the fifth switch K5. The second reverse position indicator relay (BB) Figure 2 The second reverse position relay (FBJ2) is connected to the secondary side of the circuit conversion transformer via circuit breaker RD5, and the second reverse position relay is connected to the reverse position indication circuit of the DC switch machine via the sixth switch K6 and the fifth switch K5. The second reverse position relay is used to indicate the reverse position state of the DC switch machine; the second position relay (FBJ2) is connected to the secondary side of the circuit conversion transformer via circuit breaker RD5, and the second reverse position relay is connected to the secondary side of the circuit conversion transformer via circuit breaker RD5. Figure 2 DBJ2 in the circuit is connected to the secondary side of the circuit conversion transformer via circuit breaker RD5, and the second positioning indicator relay is connected to the positioning indicator circuit of the DC switch machine via the sixth switch K6 and the fifth switch K5. The second positioning indicator relay is used to indicate the positioning status of the DC switch machine.

[0043] Specifically, the fifth switch K5 is a power input switch, and includes fifth switch contacts K51, K52, and K53; among them, the fifth switch contact K51 is connected to the reverse position indication circuit of the DC switch machine. Figure 2The fifth switch contact K52 is connected to the positioning indication circuit of the DC switch machine (X1 port). Figure 2 The fifth switch contact K53 is connected to the common return port of the positioning and reversing position indication circuits of the DC switch machine (X2 port). Figure 2 The fifth switch contact K53 is connected to the secondary side of the circuit conversion transformer via the circuit breaker RD4 and the resistor R2.

[0044] Therefore, the fifth switch K5 is a single-position switch. When the fifth switch K5 is open, there is no circuit between the DC switch machine and the indicator circuit conversion transformer. When the fifth switch K5 is closed and the sixth switch K6 is not in the neutral position, there is a circuit between the DC switch machine and the indicator circuit conversion transformer.

[0045] The sixth switch K6 is a fixed / reverse position indicator switch. The sixth switch K6 has two sets of nodes that operate simultaneously. Each set of nodes includes the sixth switch contact K61, the sixth switch contact K62, and the sixth switch contact K63. The sixth switch contact K61 is connected to the fifth switch contact K51, the sixth switch contact K62 is empty, and the sixth switch contact K63 is connected to the fifth switch contact K52. The second reverse position indicator relay is set on the branch between the sixth switch contact K61 and the secondary side of the indicator circuit conversion transformer, and the second fixed position indicator relay is set on the branch between the sixth switch contact K63 and the secondary side of the indicator circuit conversion transformer.

[0046] Therefore, the sixth switch K6 is a three-position rotary switch. When the sixth switch K6 is rotated to the sixth switch contact K61, it is in the reverse position. With the fifth switch K5 closed, the voltage output from the circuit conversion transformer is transmitted through the sixth switch K6 to the reverse position indication circuit of the DC switch machine, thus enabling the reverse position indication circuit of the DC switch machine to conduct and receive the reverse position feedback signal sent by the reverse position indication circuit of the DC switch machine. When the sixth switch K6 is rotated to the sixth switch contact K62, it is in the neutral position. When switch K5 is closed, the voltage output of the circuit conversion transformer will not be transmitted to the DC switch machine, and therefore the feedback signal sent by the DC switch machine will not be received. When the sixth switch K6 is rotated to the sixth switch contact K63, the sixth switch K6 is in the positioning indication position. When the fifth switch K5 is closed, the voltage output of the circuit conversion transformer is transmitted to the positioning indication circuit of the DC switch machine through the sixth switch K6, so that the positioning indication circuit of the DC switch machine is turned on to receive the positioning feedback signal sent by the positioning indication circuit of the DC switch machine.

[0047] Both the second reverse position indicator relay and the second position indicator relay are relays with indicator lights. When the reverse position indicator circuit is turned on and receives the reverse position feedback signal sent by the reverse position indicator circuit of the DC switch machine, the coil of the second reverse position indicator relay is pulled up, and its indicator light lights up, indicating that the DC switch machine has reached the reverse position state. If the coil of the second reverse position indicator relay falls down and its indicator light goes out, it means that the reverse position feedback signal sent by the reverse position indicator circuit of the DC switch machine has not been received, and the DC switch machine has not reached the reverse position state, indicating that the DC switch machine has malfunctioned (such as the situation where there is an obstacle between the switch rail and the main rail of the track, resulting in a lack of tight contact).

[0048] Correspondingly, when the positioning indication circuit is turned on and receives the positioning feedback signal sent by the positioning indication circuit of the DC switch machine, the coil of the second positioning indication relay is energized and its indicator light is lit, indicating that the DC switch machine has reached the positioning state. If the coil of the second positioning indication relay is de-energized and its indicator light is turned off, it indicates that the positioning feedback signal sent by the positioning indication circuit of the DC switch machine has not been received, the DC switch machine has not reached the positioning state, and it means that the DC switch machine has malfunctioned.

[0049] In practice, the DC operating circuit and DC indicating circuit are first connected to the input terminal of the DC switch machine according to the predetermined wiring rules (the port connection method mentioned above). When the DC switch machine is positioned, the fifth switch K5 is turned off, the sixth switch K6 is placed in the neutral position, the switching power supply is turned on, and the fourth switch K4 is placed at the fourth switch contact K41 to prevent the output voltage of the indicating circuit conversion transformer from being transmitted to the DC operating circuit and causing damage to the components of the DC operating circuit. When the DC switch machine is reversed, the fourth switch K4 is placed at the fourth switch contact K43. After the DC switch machine has completed the positioning or reversing operation, the fourth switch K4 is turned off, the fifth switch K5 is closed, and the sixth switch K6 is rotated to the sixth switch contact K61 or the sixth switch contact K63. The status of the indicator lights of the second reversing indicator relay and the second positioning indicator relay is checked to determine whether the DC switch machine has reached the reversing or positioning state.

[0050] This utility model discloses a DC switch machine operation test device, mainly used to test the mechanical and electrical components of the switch machine after production and before its on-site use. This ensures the normal operation of all equipment functions and avoids safety hazards after installation. It includes a DC operating circuit and a DC indicating circuit. The DC operating circuit controls the DC switch machine to perform positioning and / or reversing actions, while the DC indicating circuit indicates the positioning or reversing status of the DC switch machine. The power input terminals of both the DC operating circuit and the DC indicating circuit are connected to a portable power source. The power output terminals of the DC operating circuit and the DC indicating circuit are connected in parallel to the input terminal of the DC switch machine. Based on the standard automatic control circuit and indicating circuit of a DC switch machine, a simplified manual control circuit with complete detection and testing functions is designed and manufactured. It is also equipped with an external portable power source to provide power to the switch machine. The power supply uses an outdoor charging power source, which is appropriately sized and lightweight. Utilizing the outdoor charging power source and power conversion between different sources, and in conjunction with the switch machine control circuit, it enables on-site testing of the switch machine at any time. The DC operating circuit, DC indicating circuit, and portable power supply are independent units that can be plugged in on-site, making them convenient to carry and use. This eliminates the limitations of mechanical fixed power supplies and mechanical fixed control circuit connections. It allows for on-site testing and status indication of the AC switch machine during installation, verifying the rotation of the AC switch machine and the correctness of the indicating circuit. This eliminates the need for temporary power supply connections or generator transport during construction. It is easy to carry and enables self-testing of the switch machine equipment, ensuring that each switch machine can be powered on and tested promptly after on-site installation, guaranteeing smooth subsequent commissioning tests, ensuring construction safety, improving construction efficiency, and ensuring product quality and reliability.

[0051] On the other hand, according to relevant background investigations, current turnout testing equipment can only test single DC or AC turnouts, and cannot be used to test different types of turnouts, thus limiting its functional applicability. Therefore, if... Figure 3 As shown, this application adds an AC / DC power supply selection switch and an AC switch machine operation test device to the structure of the DC switch machine operation test device, so as to form an AC / DC switch machine operation test device.

[0052] The AC switch machine operation test device includes an AC action circuit and an AC indication circuit. The AC action circuit is used to control the AC switch machine to perform positioning and / or reversing actions. The AC indication circuit is used to indicate the positioning or reversing status of the AC switch machine. Both the DC action circuit and the AC action circuit are connected to an AC / DC power supply selection switch, which is connected to a mobile power supply. Both the DC indication circuit and the AC indication circuit are connected to the secondary side of the indication circuit conversion transformer, which is connected to the primary side of the indication circuit conversion transformer. Both the AC action circuit and the AC indication circuit are used to connect to the input terminal of the AC switch machine.

[0053] Because different types of switch machines use different power supplies, to meet testing needs, the same power supply must be converted into different types of electrical energy to power different switch machines. Simultaneously, different switch machine control circuits are used to enable the operation of multiple types of switch machines. Therefore, when the AC / DC switch machine operation test device is used to test AC switch machines, the AC / DC power supply selection switch is rotated to the AC operating circuit port, allowing the voltage from the mobile power supply to be transmitted to the AC switch machine via the AC operating circuit, thus activating the AC switch machine. When the AC / DC switch machine operation test device is used to test DC switch machines, the AC / DC power supply selection switch is rotated to the DC operating circuit port, allowing the voltage from the mobile power supply to be transmitted to the DC switch machine via the DC operating circuit, thus activating the DC switch machine.

[0054] The AC switch machine is equipped with a positioning action circuit, a reversing action circuit, a positioning indication circuit, and a reversing indication circuit. The positioning action circuit and the reversing action circuit are connected to the three-phase motor of the AC switch machine. The positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit all adopt the internal circuit of existing AC switch machines (such as the electro-hydraulic switch machine of model ZYJ7). They have overlapping branches. The combined circuit of the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit (i.e., the internal system circuit of the AC switch machine) has five external line interfaces. The AC switch machine operation test device can perform positioning and reversing tests with the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit of the AC switch machine through the external line interfaces. The positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit of the AC switch machine in this application adopt the circuit of existing AC switch machines, so they will not be described in detail here.

[0055] When the positioning circuit of the AC switch machine is activated, the three-phase motor drives the mechanical parts of the AC switch machine to control the switch rail to the positioning state. When the reversing circuit of the AC switch machine is activated, the three-phase motor drives the mechanical parts of the AC switch machine to control the switch rail to the reversing state. When the positioning indication circuit of the AC switch machine is activated, it indicates that the switch rail has completed the positioning action. By checking the feedback signal of the positioning indication circuit, it is determined whether the switch rail is in the standard position of the positioning state. Similarly, when the reversing indication circuit of the AC switch machine is activated, it indicates that the switch rail has completed the reversing action. By checking the feedback signal of the reversing indication circuit, it is determined whether the switch rail is in the standard position of the reversing state.

[0056] Specifically, such as Figure 4 As shown, the AC operating circuit of the AC switch machine operation test device includes a frequency converter, a first switch K1, a voltmeter, and an AC ammeter; wherein, the frequency converter is connected to a mobile power supply, and the frequency converter is used to convert the first AC voltage (e.g., ...) output by the mobile power supply into AC voltage (e.g., ...) Figure 4 The AC 220V voltage is converted into a second AC voltage (such as the AC voltage used in the switch machine) to power the AC switch machine. Figure 4 The AC voltage is 380V. The first switch K1 is connected to the power output terminal of the frequency converter and the input terminal of the AC switch machine. The first switch K1 is used to transmit the second AC voltage to the positioning action circuit or the reversing action circuit of the AC switch machine so that the AC switch machine can perform positioning action or reversing action. The voltmeter and AC ammeter are set on the three-phase branch connected to the frequency converter and the first switch K1. By checking the voltmeter and AC ammeter, it can be determined whether the three-phase power of the AC action circuit is stable.

[0057] Since most current AC switch machines have five external line interfaces, meaning that AC switch machines have five input terminals, this application also sets the output terminals of the AC operating circuit and the AC indication circuit to five.

[0058] Generally, the five input terminals of an AC switch machine are connected to the positioning action circuit, the reversing action circuit, the positioning indication circuit, and the reversing indication circuit of the AC switch machine, respectively. Therefore, for ease of understanding, as follows: Figure 4 As shown, in this application, the X5 and X2 ports of the AC switch machine are configured to be connected to the positioning action circuit, the X3 and X4 ports of the AC switch machine are configured to be connected to the reverse position action circuit, the X5 and X3 ports of the AC switch machine are configured to be connected to the reverse position indication circuit, the X2 and X4 ports of the AC switch machine are configured to be connected to the positioning indication circuit, and the X1 port of the AC switch machine is configured as the common return line port of the positioning action circuit, the reverse position action circuit, the positioning indication circuit, and the reverse position indication circuit.

[0059] Specifically, the first switch K1 is a position-reverse action changeover switch. The first switch K1 has three sets of nodes that operate simultaneously. Each set of nodes includes the first switch contact K11, the first switch contact K12, and the first switch contact K13. The first switch contact K11 is connected to the positioning action circuit of the AC switch machine. Figure 4 Connect the X5 and X2 ports in the circuit, set the first switch contact K12 to empty, and set the first switch contact K13 to the reverse position operation circuit of the AC switch machine. Figure 4 The X3 and X4 ports are connected. Therefore, the first switch K1 is a three-position rotary switch. When the first switch K1 is rotated to the first switch contact K11, it is in the positioning position. The second AC voltage output by the frequency converter is transmitted to the positioning circuit of the AC switch machine through the first switch K1, so that the positioning circuit of the AC switch machine is turned on and the AC switch machine performs the positioning action. When the first switch K1 is rotated to the first switch contact K12, it is in the neutral position, so that the second AC voltage output by the frequency converter is not transmitted to the AC switch machine and the AC switch machine does not operate. When the first switch K1 is rotated to the first switch contact K13, it is in the reverse position. The second AC voltage output by the frequency converter is transmitted to the reverse position circuit of the AC switch machine through the first switch K1, so that the reverse position circuit of the AC switch machine is turned on and the AC switch machine performs the reverse position action.

[0060] like Figure 4 As shown, the AC indicator circuit of the AC switch machine operation test device includes a third switch K3, a second switch K2, a first reverse position indicator relay, a first position indicator relay, circuit breakers RD2 and RD3, and a resistor R1. The third switch K3 is connected to the secondary side of the indicator circuit conversion transformer via circuit breaker RD3 and resistor R1. The third switch K3 is used to transmit the voltage output from the indicator circuit conversion transformer to the position indicator circuit or reverse position indicator circuit of the AC switch machine. The second switch K2 is connected to the secondary side of the indicator circuit conversion transformer, the third switch K3, the first reverse position indicator relay, the first position indicator relay, and the AC switch machine. The second switch K2 is used to control the connection or disconnection between the third switch K3 and the AC switch machine. The first reverse position indicator relay (… Figure 4 FBJ1) is connected to the third switch K3, and is connected to the reverse position indication circuit of the AC switch machine through the second switch K2. The first reverse position indication relay is used to indicate the reverse position state of the AC switch machine; the first position indication relay ( Figure 4 DBJ1 is connected to the third switch K3 and to the positioning indication circuit of the AC switch machine via the second switch K2. The first positioning indication relay is used to indicate the positioning status of the AC switch machine.

[0061] Specifically, the third switch K3 is a position indicator changeover switch. The third switch K3 includes third switch contacts K31, K32, and K33. Third switch contact K31 connects to the position indicator circuit of the AC switch machine via the first position indicator relay and the second switch K2. Figure 4 The X4 and X2 ports are connected, the third switch contact K32 is empty, and the third switch contact K33 is connected to the reverse position indication circuit of the AC switch machine through the first reverse position indication relay and the second switch K2. Figure 4 The X5 and X3 ports are connected. Therefore, the third switch K3 is a three-position rotary switch. When the third switch K3 is rotated to the third switch contact K31, it is in the positioning indicator position. With the second switch K2 closed, the voltage output from the indicator circuit conversion transformer is transmitted to the positioning indicator circuit of the AC switch machine through the third switch K3 to make the positioning indicator circuit of the AC switch machine conduct, so as to receive the positioning feedback signal sent by the positioning indicator circuit of the AC switch machine. When the third switch K3 is rotated to the third switch contact K32, it is in the neutral position. When switch K2 is closed, the voltage output of the circuit conversion transformer will not be transmitted to the AC switch machine, and therefore the feedback signal sent by the AC switch machine will not be received. When the third switch K3 is rotated to the third switch contact K33, the third switch K3 is in the reverse position position. When the second switch K2 is closed, the voltage output of the circuit conversion transformer is transmitted to the reverse position indication circuit of the AC switch machine through the third switch K3, so that the reverse position indication circuit of the AC switch machine is turned on, so as to receive the reverse position feedback signal sent by the reverse position indication circuit of the AC switch machine.

[0062] The second switch K2 is a power input switch, and includes second switch contacts K21, K22, K23, K24, and K25. Second switch contact K21 is connected to the secondary side of the circuit conversion transformer and the X1 port of the AC switch machine. Second switch contact K22 is connected to the third switch contact K31 and the positioning indication circuit of the AC switch machine. Figure 4 The first switch contact (K23) is connected to the X2 port of the AC switch machine and to the first positioning indicator relay; the second switch contact (K24) is connected to the reverse position indicator circuit of the AC switch machine. Figure 4The first switch (K2) is connected to the X5 port of the AC switch machine and to the first reverse position indicator relay; the second switch contact K25 is connected to the X3 port of the AC switch machine and the third switch contact K33. Therefore, the second switch K2 is a single-position switch. When the second switch K2 is open, there is no circuit between the AC switch machine and the indicator circuit conversion transformer; when the second switch K2 is closed and the third switch K3 is not in the neutral position, there is a circuit between the AC switch machine and the indicator circuit conversion transformer.

[0063] Both the first reverse position indicator relay and the first position indicator relay are relays with indicator lights. When the reverse position indicator circuit is turned on and receives the reverse position feedback signal sent by the reverse position indicator circuit of the AC switch machine, the coil of the first reverse position indicator relay is energized, and its indicator light illuminates, indicating that the AC switch machine has reached the reverse position state. If the coil of the first reverse position indicator relay drops and its indicator light goes out, it indicates that the reverse position feedback signal sent by the reverse position indicator circuit of the AC switch machine has not been received, the AC switch machine has not reached the reverse position state, and it means that the AC switch machine has malfunctioned.

[0064] Correspondingly, when the positioning indication circuit is activated and receives the positioning feedback signal sent by the positioning indication circuit of the AC switch machine, the coil of the first positioning indication relay is energized, and its indicator light illuminates, indicating that the AC switch machine has reached the positioning state. If the coil of the first positioning indication relay is deactivated and its indicator light goes out, it indicates that the positioning feedback signal sent by the positioning indication circuit of the AC switch machine has not been received, the AC switch machine has not reached the positioning state, and the AC switch machine has malfunctioned.

[0065] In the specific implementation of the AC switch machine operation test device, the AC action circuit and AC indication circuit are first connected to the input terminal of the AC switch machine according to the predetermined wiring rules (the port connection method mentioned above). When the AC switch machine is positioned, the second switch K2 is turned off, the third switch K3 is placed in the neutral position, the frequency converter is turned on, and the first switch K1 is placed in the first switch contact K11 to prevent the output voltage of the indicator circuit conversion transformer from being transmitted to the AC action circuit, which would damage the components of the AC action circuit. When the AC switch machine is reversed, the first switch K1 is placed in the first switch contact K13. After the AC switch machine has completed the positioning or reversing action, the first switch K1 is turned off, the second switch K2 is closed, and the third switch K3 is rotated to the third switch contact K33 or the third switch contact K31. By checking the status of the indicator lights of the first reversing indicator relay and the first positioning indicator relay, it is determined whether the AC switch machine has reached the reversing or positioning state.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A DC switch machine operation test device, characterized in that, include: DC operating circuit, used to control DC switch machine to perform positioning and / or reversing operations; A DC indicator circuit is used to indicate the positioning or reversing state of the DC switch machine; The power input terminals of the DC operating circuit and the DC display circuit are both connected to a mobile power source. The power output terminals of the DC operating circuit and the DC display circuit are connected in parallel and then connected to the input terminal of the DC switch machine.

2. The DC switch machine operation test device according to claim 1, characterized in that, The DC display circuit is connected to the mobile power supply via a display circuit conversion transformer. The primary side of the display circuit conversion transformer is connected to the mobile power supply, and the secondary side of the display circuit conversion transformer is connected to the DC display circuit.

3. The DC switch machine operation test device according to claim 2, characterized in that, The DC operating circuit includes: A switching power supply, connected to the mobile power supply, is used to convert the first AC voltage output by the mobile power supply into a first DC voltage for the operation of the DC switch machine; The fourth switch K4 is connected to the switching power supply and the DC switch machine, and is used to transmit the first DC voltage to the positioning action circuit or reversing action circuit of the DC switch machine so that the DC switch machine can perform positioning action or reversing action.

4. The DC switch machine operation test device according to claim 3, characterized in that, The DC display circuit includes: The fifth switch K5 is connected to the secondary side of the indicator circuit conversion transformer and the DC switch machine, and is used to control the conduction or cutoff between the indicator circuit conversion transformer and the DC switch machine; The sixth switch K6 is connected to the secondary side of the indicator circuit conversion transformer and the fifth switch K5, and is used to transmit the voltage output by the indicator circuit conversion transformer to the positioning indicator circuit or the reversing indicator circuit of the DC switch machine. The second reverse position indicator relay is connected to the secondary side of the indicator circuit conversion transformer and the reverse position indicator circuit of the DC switch machine, and is used to indicate the reverse position state of the DC switch machine; The second positioning relay is connected to the secondary side of the positioning circuit conversion transformer and the positioning positioning circuit of the DC switch machine, and is used to indicate the positioning status of the DC switch machine.

5. The DC switch machine operation test device according to claim 4, characterized in that, The fourth switch K4 includes a fourth switch contact K41, a fourth switch contact K42, and a fourth switch contact K43. The fourth switch contact K41 is connected to the positioning action circuit of the DC switch machine, the fourth switch contact K42 is empty, and the fourth switch contact K43 is connected to the reversing action circuit of the DC switch machine.

6. The DC switch machine operation test device according to claim 5, characterized in that, The fifth switch K5 includes a fifth switch contact K51, a fifth switch contact K52, and a fifth switch contact K53. The fifth switch contact K51 is connected to the reverse position indication circuit of the DC switch machine, the fifth switch contact K52 is connected to the position indication circuit of the DC switch machine, and the fifth switch contact K53 is connected to the secondary side of the indication circuit conversion transformer.

7. The DC switch machine operation test device according to claim 6, characterized in that, The sixth switch K6 includes a sixth switch contact K61, a sixth switch contact K62, and a sixth switch contact K63. The sixth switch contact K61 is connected to the fifth switch contact K51, the sixth switch contact K62 is empty, and the sixth switch contact K63 is connected to the fifth switch contact K52.

8. The DC switch machine operation test device according to claim 7, characterized in that, The second reverse position indicator relay is disposed on the branch between the sixth switch contact K61 and the secondary side of the indicator circuit conversion transformer.

9. The DC switch machine operation test device according to claim 8, characterized in that, The second positioning relay is disposed on the branch between the sixth switch contact K63 and the secondary side of the indicator circuit conversion transformer.

10. The DC switch machine operation test device according to claim 9, characterized in that, A DC voltmeter is installed on the branch connecting the switching power supply and the fourth switch K4.

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