Control device of railway car lifting jack

Abstract

The utility model provides a control device of a railway car lifting jack, which comprises a control panel, an air switch QF1, an air switch QF2, an air switch QF3, an air switch QF4, an air switch QF5, an air switch QF6 and an air switch QF7. An upward button SB1, a downward button SB2, a stop button SB3, relays KA1 to KA8, a rectifier bridge, a first motor frequency converter, a second motor frequency converter, a third motor frequency converter, a fourth motor frequency converter, a motor M1, a motor M2, a motor M3, a motor M4, a PLC, a first pickaxe pressure switch, a second pickaxe pressure switch, a third pickaxe pressure switch and a fourth pickaxe pressure switch, all of which form a main loop and a control loop. According to the device, electrical connection among all control elements is completed, the functions of ascending, descending and the like of the car lifting jack are achieved, and the device is high in universality, stable in performance and high in popularization value.

Description

Technical Field

[0001] This utility model relates to the technical application field of train control, specifically to the field of railway equipment technology, and more specifically to an electrical control device for a railway train control machine. Background Technology

[0002] With the rapid development of the railway transportation industry, higher requirements have been placed on the performance and stability of railway locomotives. As the core component of railway locomotives, the performance of electrical control devices directly affects the operating efficiency and safety of the locomotives.

[0003] Traditional railway locomotive electrical control devices have some shortcomings, such as: low control precision, making it difficult to meet the needs of modern railway transportation for precise train operation control; poor reliability, making them prone to failure in complex operating environments, affecting the normal operation of trains; low energy utilization efficiency, resulting in energy waste and increased operating costs. In addition, traditional electrical control devices also have poor compatibility and scalability, making it difficult to effectively integrate and upgrade with new railway equipment and technologies.

[0004] Therefore, developing an electrical control device for railway locomotives that has high control precision, high reliability, high energy efficiency, good compatibility, and scalability is of great practical significance. Utility Model Content

[0005] The purpose of this invention is to provide a simulation control device to enable the car-mounting machine to meet automation requirements.

[0006] To achieve the above objectives, this utility model provides a control device for a railway car-lifting machine, including a control panel, air switches QF1, QF2, QF3, QF4, QF5, QF6, and QF7, up button SB1, down button SB2, stop button SB3, relays KA1 to KA8, a rectifier bridge, frequency converters for motors 1, 2, 3, and 4, motors M1, M2, M3, and M4, a PLC, and pickaxe pressure switches 1, 2, 3, and 4. These components constitute the main circuit and the control circuit.

[0007] The main circuit includes: a three-phase 380V power supply connected to the upper side of a 3P air switch QF1; air switches QF2, QF3, QF4, QF5, QF6, and QF7 connected to the lower side of air switch QF1; motor inverter 1 connected to the lower side of air switch QF2, motor M1 connected to the lower side of motor inverter 1; motor inverter 2 connected to the lower side of air switch QF3, motor M2 connected to the lower side of motor inverter 2; motor inverter 3 connected to the lower side of air switch QF4, motor M3 connected to the lower side of motor inverter 3; motor inverter 4 connected to the lower side of air switch QF5, motor M4 connected to the lower side of motor inverter 4; and a rectifier bridge connected to the lower side of air switch QF6, with the rectifier bridge outputting a positive DC+ and a negative DC- power supply.

[0008] Connect the S1 terminal of motor inverter #1 to the normally open contact of relay KA1, connect the S2 terminal of motor inverter #1 to the normally open contact of relay KA2, and connect the other side of the normally open contacts of relays KA1 and KA2 to the COM point of motor inverter #1.

[0009] Connect the S1 terminal of motor 2 inverter to the normally open contact of relay KA3, connect the S2 terminal of motor 2 inverter to the normally open contact of relay KA4, and connect the other side of the normally open contacts of relay KA3 and relay KA4 to the COM point of motor 2 inverter.

[0010] Connect the S1 terminal of motor inverter #3 to the normally open contact of relay KA5, connect the S2 terminal of motor inverter #3 to the normally open contact of relay KA6, and connect the other side of the normally open contacts of relays KA5 and KA6 to the COM point of motor inverter #3.

[0011] Connect the S1 terminal of motor inverter #4 to the normally open contact of relay KA7, connect the S2 terminal of motor inverter #4 to the normally open contact of relay KA8, and connect the other side of the normally open contacts of relays KA7 and KA8 to the COM point of motor inverter #4.

[0012] The control circuit includes: the positive terminal DC+ of the rectifier bridge DC power supply is connected to the COM point of the PLC; the DC- of the DC power supply is connected to the common terminal of the up button SB1, down button SB2, stop button SB3, and the first pickaxe pressure switch SQ1, the second pickaxe pressure switch SQ2, the third pickaxe pressure switch SQ3, and the fourth pickaxe pressure switch SQ4; the inputs are sent to the PLC's 1CH01 to 07 input terminals through the up button SB1, down button SB2, stop button SB3, the first pickaxe pressure switch SQ1, the second pickaxe pressure switch SQ2, the third pickaxe pressure switch SQ3, and the fourth pickaxe pressure switch SQ4; the control circuit L11 line is connected to the upper side of the air switch QF7; the lower side of the air switch QF7 is connected to the common terminal of relays KA1 to KA8; the PLC's 100CH01 to 100CH08 output terminals are respectively connected to the coils of relays KA1 to KA8; and the N line is connected to the PLC's 100CH-COM terminal.

[0013] This utility model provides a simulation control device. The device has completed the electrical connection between various control components and realizes the functions of raising and lowering the vehicle lifting machine. The device has strong versatility, stable performance, and great promotional value. Attached Figure Description

[0014] Figure 1 This is an electrical schematic diagram of the main circuit of a railway car-lifting machine implemented according to this utility model;

[0015] Figure 2 This is an electrical schematic diagram of the control circuit of a railway car-lifting machine implemented according to this utility model. Detailed Implementation Plan

[0016] The railway car-lifting machine is mainly composed of Omron PLC, frequency converter, relay, button, air switch, pressure switch, etc. The hardware wiring of the device has been completed, realizing the automated drive of the equipment.

[0017] Using Omron PLCs, frequency converters, and other components as the core, and connecting various components through the logical relationships of electrical components, this device is designed, assembled, and developed to achieve equipment automation. It is easy to learn and understand.

[0018] This device improves the control method of the car-lifting machine and enhances the reliability of the equipment.

[0019] The PLC is the core of the equipment. Four pressure switches and three buttons input switch signals to the PLC. The PLC performs internal logic operations and outputs control relays KA1 to KA8, which in turn control four frequency converters, thereby controlling the operation of the equipment.

[0020] Advantages of frequency converters: Open-loop vector control achieves high precision and high torque, short torque response time, automatic torque boost function at low speeds, built-in EMI noise filter effectively improves system reliability, significantly reduces noise interference, avoids electromagnetic interference to other equipment causing malfunctions, and features a rotary operator that can move freely and is easy to use.

[0021] The PLC is connected to the up button SB1, down button SB2, stop button SB3, pickaxe pressure switch SQ1, pickaxe pressure switch SQ2, pickaxe pressure switch SQ3, pickaxe pressure switch SQ4, relays KA1 to KA8, rectifier bridge, and air switch respectively; the air switch is connected to motor inverters No. 1, No. 2, No. 3, and No. 4.

[0022] Reference Figure 1 This is the electrical schematic diagram of the main circuit of this device. The following is an analysis of this schematic diagram.

[0023] (1) Analysis of the main circuit

[0024] A three-phase 380V power supply is connected to the upper side of a 3P air switch QF1. The lower side of air switch QF1 is connected to air switches QF2, QF3, QF4, QF5, QF6, and QF7. The lower side of air switch QF2 is connected to motor inverter #1, and motor M1 is connected to the lower side of motor inverter #1. The lower side of air switch QF3 is connected to motor inverter #2, and motor M2 is connected to the lower side of motor inverter #2. The lower side of air switch QF4 is connected to motor inverter #3, and motor M3 is connected to the lower side of motor inverter #3. The lower side of air switch QF5 is connected to motor inverter #4, and motor M4 is connected to the lower side of motor inverter #4. The lower side of air switch QF6 is connected to a rectifier bridge, which outputs a positive DC+ and a negative DC- power supply.

[0025] Connect the S1 terminal of motor inverter #1 to the normally open contact of relay KA1, connect the S2 terminal of motor inverter #1 to the normally open contact of relay KA2, and connect the other side of the normally open contacts of relays KA1 and KA2 to the COM point of motor inverter #1.

[0026] Connect the S1 terminal of motor 2 inverter to the normally open contact of relay KA3, connect the S2 terminal of motor 2 inverter to the normally open contact of relay KA4, and connect the other side of the normally open contacts of relay KA3 and relay KA4 to the COM point of motor 2 inverter.

[0027] Connect the S1 terminal of motor inverter #3 to the normally open contact of relay KA5, connect the S2 terminal of motor inverter #3 to the normally open contact of relay KA6, and connect the other side of the normally open contacts of relays KA5 and KA6 to the COM point of motor inverter #3.

[0028] Connect the S1 terminal of motor inverter #4 to the normally open contact of relay KA7, connect the S2 terminal of motor inverter #4 to the normally open contact of relay KA8, and connect the other side of the normally open contacts of relays KA7 and KA8 to the COM point of motor inverter #4.

[0029] L11, L21 and L31 represent the L11 line, L21 line and L31 line of the main circuit, respectively.

[0030] Reference Figure 2 This is the electrical schematic diagram of the control circuit of this device. The following is an analysis of this schematic diagram.

[0031] (2) Control loop analysis

[0032] The positive terminal (DC+) of the rectifier bridge DC power supply is connected to the COM point of the PLC. The DC- terminal is connected to the common terminal of the up button SB1, down button SB2, stop button SB3, and the pressure switches SQ1, SQ2, SQ3, and SQ4. The inputs from these switches are then fed into the PLC's input terminals 1CH01 to 07. The control circuit line L11 is connected to the upper side of the air switch QF7. The lower side of the air switch QF7 is connected to the common terminal of relays KA1 to KA8. The PLC's output terminals 100CH01 to 100CH08 are connected to the coils of relays KA1 to KA8, respectively. The N line is connected to the PLC's 100CH-COM terminal.

Claims

1. A control device for a railway car-lifting machine, characterized in that, The system includes a control panel, air switches QF1, QF2, QF3, QF4, QF5, QF6, and QF7, up button SB1, down button SB2, stop button SB3, relays KA1 to KA8, a rectifier bridge, frequency converters for motors 1, 2, 3, and 4, motors M1, M2, M3, and M4, a PLC, and pressure switches for the pickaxe head (number 1, 2, 3, and 4). These components together form the main circuit and control circuit. The main circuit includes: a three-phase 380V power supply connected to the upper side of air switch QF1; air switches QF2, QF3, QF4, QF5, QF6, and QF7 connected to the lower side of air switch QF1; motor inverter 1 connected to the lower side of air switch QF2, motor M1 connected to the lower side of motor inverter 1; motor inverter 2 connected to the lower side of air switch QF3, motor M2 connected to the lower side of motor inverter 2; motor inverter 3 connected to the lower side of air switch QF4, motor M3 connected to the lower side of motor inverter 3; motor inverter 4 connected to the lower side of air switch QF5, motor M4 connected to the lower side of motor inverter 4; and a rectifier bridge connected to the lower side of air switch QF6, with the rectifier bridge outputting a positive DC+ and a negative DC- power supply. Connect the S1 terminal of motor inverter #1 to the normally open contact of relay KA1, connect the S2 terminal of motor inverter #1 to the normally open contact of relay KA2, and connect the other side of the normally open contacts of relays KA1 and KA2 to the COM point of motor inverter #1. Connect the S1 terminal of motor 2 inverter to the normally open contact of relay KA3, connect the S2 terminal of motor 2 inverter to the normally open contact of relay KA4, and connect the other side of the normally open contacts of relay KA3 and relay KA4 to the COM point of motor 2 inverter. Connect the S1 terminal of motor inverter #3 to the normally open contact of relay KA5, connect the S2 terminal of motor inverter #3 to the normally open contact of relay KA6, and connect the other side of the normally open contacts of relays KA5 and KA6 to the COM point of motor inverter #3. Connect the S1 terminal of motor inverter #4 to the normally open contact of relay KA7, connect the S2 terminal of motor inverter #4 to the normally open contact of relay KA8, and connect the other side of the normally open contacts of relays KA7 and KA8 to the COM point of motor inverter #4. The control circuit includes: the positive terminal DC+ of the rectifier bridge DC power supply is connected to the COM point of the PLC; the DC- of the DC power supply is connected to the common terminal of the up button SB1, down button SB2, stop button SB3, and the first pickaxe pressure switch SQ1, the second pickaxe pressure switch SQ2, the third pickaxe pressure switch SQ3, and the fourth pickaxe pressure switch SQ4; the inputs are sent to the PLC's 1CH01 to 07 input terminals through the up button SB1, down button SB2, stop button SB3, the first pickaxe pressure switch SQ1, the second pickaxe pressure switch SQ2, the third pickaxe pressure switch SQ3, and the fourth pickaxe pressure switch SQ4; the control circuit L11 line is connected to the upper side of the air switch QF7; the lower side of the air switch QF7 is connected to the common terminal of relays KA1 to KA8; the PLC's 100CH01 to 100CH08 output terminals are respectively connected to the coils of relays KA1 to KA8; and the N line is connected to the PLC's 100CH-COM terminal.

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