A kind of electric pantograph raising control device for urban rail

Abstract

A kind of urban rail electric pantograph raising control device belongs to the field of rail transit technology, mainly composed of a box body and a pressure controller and a compressor inside the box body, a switch is arranged on the box body, the switch is connected to the contactor coil, controls the power input of the contactor, the contactor switch is electrically connected to the control box, controls the power input of the control box, the control box is also electrically connected to the pressure controller and the compressor respectively, the on-off of the circuit where the pressure controller is located controls the start and stop of the compressor, and the air outlet of the compressor is connected to the pantograph raising air circuit. The present invention has the characteristics of beautiful appearance, compact structure, high reliability, short inflation time, low noise, low maintenance cost, etc., meets the function of automatically inflating the pantograph raising pipeline and maintaining the pantograph raising pipeline air pressure when the train pantograph raising pipeline air pressure is insufficient, and stabilizes the pantograph contacting the grid state, which greatly improves the convenience of pantograph raising control.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit, and more specifically, relates to an electric pantograph raising control device for urban rail. Background Art

[0002] When the air source pressure of the urban rail main air compressor is sufficient, the pantograph raising control signal controls the pantograph raising solenoid valve to open and the passage is opened. At this time, the urban rail main air compressor air source system is charged with air, and the pressurized air passes through the main air compressor air source check valve, air source filter, and pantograph raising solenoid valve to the urban rail pantograph, so that the pantograph receives electricity.

[0003] When the air source pressure of the urban rail main air compressor is insufficient, the urban rail is powered off and the pantograph raising control signal cannot be issued. Use the manual button to control the pantograph raising solenoid valve to the passage open position. At this time, use the emergency pantograph raising foot pump air source to charge the system with air. The pressurized air passes through the foot pump air source one-way valve, air source filter, and pantograph raising solenoid valve to the vehicle pantograph, raising the pantograph. Release the manual button and the pantograph raising solenoid valve will reset.

[0004] Most of the domestic subway and urban rail vehicles are powered by overhead contact lines. The traditional foot-operated pump-assisted pantograph raising device takes a long time to raise the pantograph, requires a lot of pedaling force, and the raising pressure cannot be automatically determined, which brings a lot of inconvenience to the driver. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention proposes an urban rail electric pantograph raising control device to inflate the pantograph raising air cylinder when the air pressure in the pantograph raising air cylinder is insufficient, maintain the air pressure in the main air path, and stabilize the pantograph contacting the grid state.

[0006] The specific technical solution adopted by the present invention is as follows:

[0007] A control device for raising an electric pantograph of a city rail, mainly composed of a box body and a pressure controller and a compressor inside the box body. A switch is arranged on the box body, the switch is connected to a contactor coil to control the power input of the contactor, the contactor switch is electrically connected to a control box to control the power input of the control box, the control box is also electrically connected to the pressure controller and the compressor respectively, the on-off of the circuit where the pressure controller is located controls the start and stop of the compressor, and the air outlet of the compressor is connected to the pantograph raising air circuit.

[0008] Preferably, the switch is a two-speed knob switch to control the start and stop of the electric bow raising control device.

[0009] Preferably, an indicator light is installed on the box body, and the indicator light is electrically connected to the control box to indicate the working status of the electric pantograph raising control device.

[0010] Preferably, the compressor is installed on the bottom plate of the box body by arranging a shock-absorbing pad to reduce the working noise of the compressor.

[0011] Preferably, an air filter is installed at the air inlet of the compressor to ensure that the air in the air path is free of impurities.

[0012] Preferably, a one-way valve and a safety valve are sequentially arranged on the air path of the compressor air outlet, and the one-way valve and the safety valve are integrated on the air path plate.

[0013] Preferably, the gas circuit board is also integrated with a pressure controller and a drain valve, and the drain valve is installed on the bottom boss of the gas circuit board. The drain valve can be opened manually to drain water to prevent low-temperature freezing from causing gas circuit blockage.

[0014] Preferably, the compressor air outlet and the air circuit board are connected by a metal hose.

[0015] Preferably, the gas circuit board is made of aluminum alloy to reduce the weight of the device.

[0016] Preferably, the control box is installed on the back of the box body through epoxy fiber cloth to improve the pressure resistance level of the system.

[0017] The beneficial effects of the present invention are:

[0018] (1) The electric bow lifting control device is composed of an electric oil-free compressor, a pressure controller, a check valve, a safety valve, and a gas manifold, which has a beautiful appearance and a compact structure.

[0019] (2) A drain valve is installed at the bottom of the electric bow lifting control device, which can promptly drain the water stored in the electric oil-free compressor system to prevent the water from freezing in the cold winter and causing gas line blockage;

[0020] (3) The pressure controller adopts a purely mechanical structure, which has a strong contact action force and high reliability, and can improve the accuracy of the electric bow lifting control device;

[0021] (4) The control box of the electric oil-free compressor is installed on the base plate through the epoxy fiber cloth board, which improves the pressure resistance level of the system;

[0022] (5) The electric oil-free compressor is installed on the base plate through a shock-absorbing pad, which reduces the noise generated when the compressor is working;

[0023] (6) When the air pressure in the pantograph raising pipeline is insufficient, the system can automatically inflate the pantograph raising pipeline with a short inflation time, maintain the air pressure in the pantograph raising pipeline, and stabilize the pantograph contact network state, greatly improving the convenience of pantograph raising control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the appearance and structure diagram of the electric pantograph raising control device;

[0025] Figure 2 It is a front cross-sectional view of the electric bow raising control device;

[0026] Figure 3 It is a top sectional view of the electric bow raising control device;

[0027] Figure 4 This is the electrical schematic diagram of the electric pantograph control device;

[0028] Figure 5 This is the gas circuit schematic diagram of the electric bow lifting control device.

[0029] 1. Box body; 2. Two-speed rotary switch; 3. Indicator light; 4. Compressor; 5. Control box; 6. Drain valve; 7. Metal hose; 8. Check valve; 9. Pressure controller; 10. Air filter; 11. Safety valve; 12. Contactor; 13. Air board. DETAILED DESCRIPTION

[0030] The present invention is further described below with reference to specific examples. Unless otherwise specified, the raw materials and methods used in the examples of the present invention are conventional commercially available raw materials and conventionally used methods in the art.

[0031] Example 1

[0032] A city rail electric pantograph control device, such as Figures 1 to 4 As shown, it is mainly composed of a box body (1) and a pressure controller (9) and a compressor (4) inside the box body (1). The selected pressure controller (9) is a purely mechanical structure, and its contact action force is large and the reliability is high. It is used to determine whether the air pressure in the bow raising pipeline is sufficient so as to control the start and stop of the compressor (4); the box body (1) is composed of a bottom plate and a cover plate, and a two-speed knob switch (2) and an indicator light (3) are arranged on the top. The indicator light (3) indicates the working state of the electric bow raising control device. The two-speed knob switch (2) is connected to the contactor (12) coil. The contactor (12) switches KT1 and KT2 are connected in parallel with the indicator light (3) and are electrically connected to the control box (5). The on and off of the contactor (12) switch can be controlled by adjusting the two-speed knob switch (2), thereby controlling the electric bow raising control device. Start and stop; the control box (5) is provided with three circuits in total, circuit 1 is a power input circuit, that is, the contactor (12) controls whether power is input to the control box (5); circuit 2 is a power output circuit, the control box (5) is electrically connected to the compressor (4), and outputs power to the motor of the compressor (4); circuit 3 is a control circuit, the control box (5) is electrically connected to the pressure controller (9), and the conduction state of the pressure controller (9) determines whether circuit 2 of the control box (5) outputs power; the control box (5) can be implemented with a single-chip microcomputer chip, and the control box (5) is installed on the back of the box (1) through an epoxy fiber cloth board, thereby improving the pressure resistance level of the system; the air outlet of the compressor (4) is connected to the rising bow air path.

[0033] like Figure 2 , Figure 3 , Figure 5 As shown, the compressor (4) is installed on the bottom plate of the box (1) through a shock-absorbing pad, thereby reducing the noise generated by the compressor (4) when working. The air inlet of the compressor (4) is installed with an air filter (10) to ensure that the air in the air path is free of impurities. A one-way valve (8) and a safety valve (11) are arranged in sequence on the air path of the air outlet. The one-way valve (8) and the safety valve (11) are integrated on the air path plate (13). The air path plate (13) is also integrated with a pressure controller (9) and a drain valve (6). The drain valve (6) is installed on the bottom boss of the air path plate (13). Since the bottom boss of the air path plate (13) is the lowest point of the device, manually opening the drain valve (6) can timely drain the water stored in the device to prevent the water from freezing in the cold winter and causing the air path to be blocked. The air path plate (13) is made of aluminum alloy, which can reduce the weight of the device. The air outlet of the compressor (4) and the air path plate (13) are connected by a metal hose (7). The device is also connected to the bow lifting pipeline through an air pipe.

[0034] Example 2

[0035] This embodiment discloses the working principle of the urban rail electric pantograph raising control device in Embodiment 1. Figure 4 As shown: when the second-speed knob switch (2) is in the closed state, the contactor (12) is energized, the contactor (12) is closed, and the control box (5) circuit 1 has a DC 110V voltage input; when the air pressure in the bow-lifting pipeline is lower than the lower limit value of 450kPa set by the pressure controller (9), the pressure controller (9) is closed, and the control box (5) circuit 3 is turned on; when the control box (5) circuit 3 is turned on, the circuit 2 outputs voltage, the compressor (4) is powered on, and starts to pump air into the bow-lifting pipeline. When the bow-lifting pipeline reaches the upper limit value of 650kPa set by the pressure controller (9), the control box (5) circuit 3 is disconnected, the circuit 2 stops outputting voltage, and the compressor (4) loses power and stops working.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An urban rail electric pantograph control device, mainly composed of a box body and a pressure controller and a compressor inside the box body, characterized in that: The box is provided with a switch, which is connected to the contactor coil to control the power input of the contactor. The contactor switch is electrically connected to the control box to control the power input of the control box. The control box is also electrically connected to the pressure controller and the compressor respectively. The on-off of the circuit where the pressure controller is located controls the start and stop of the compressor. The air outlet of the compressor is connected to the rising bow air path; The switch on the box body is a two-speed knob switch to control the start and stop of the electric pantograph raising control device. An indicator light is installed on the box body, and the indicator light is electrically connected to the control box to indicate the working state of the electric pantograph raising control device. The compressor is installed on the bottom plate of the box body by arranging a shock-absorbing pad to reduce the working noise of the compressor. An air filter is installed on the air inlet of the compressor to ensure that the air in the air path is free of impurities. A one-way valve and a safety valve are arranged in sequence on the air path of the compressor outlet. The one-way valve and the safety valve are integrated on the air path plate. The air path plate is also integrated with a pressure controller and a drain valve. The drain valve is installed on the bottom boss of the air path plate. The drain valve can be manually opened to drain water to prevent the air path from being blocked by low-temperature freezing. The compressor air outlet is connected to the air circuit board by a metal hose. The air circuit board is made of aluminum alloy to reduce the weight of the device. The box is installed on the back of the box body through epoxy fiber cloth to improve the pressure resistance level of the system.

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