Control circuit for emergency pantograph rising test device of pantograph

Abstract

The invention discloses a control circuit for a pantograph emergency pantograph rising test device, which comprises a pantograph emergency pantograph rising power supply activation circuit, a pantograph emergency pantograph rising control circuit and a pantograph emergency pantograph rising pump control circuit, according to the invention, the daily electrified and non-electrified maintenance operation of the pantograph is carried out according to the maintenance regulations of the on-site vehicle pantograph of an enterprise, so that the daily maintenance requirements of most enterprise employees are met; the normal pantograph rising and falling test can be carried out according to an enterprise field process flow: firstly checking a voltmeter and a barometer, activating a train and a cab, then pressing an emergency brake button and pantograph rising interlocking, carrying out pantograph rising control, checking a pantograph rising state, carrying out pantograph falling control, checking a pantograph falling state, and then cutting off power. And a pantograph emergency pantograph rising test (with electricity and without gas) can be carried out according to an enterprise field process flow: a voltmeter and a barometer are checked, an emergency brake button and pantograph rising interlocking are started after a train and a cab are activated, emergency pantograph rising control is carried out, and a pantograph rising state is checked.

Description

Technical Field

[0001] The invention relates to the technical field of pantograph control for rail transit vehicles, and in particular to a control circuit for a pantograph emergency pantograph raising test device. Background Art

[0002] With the acceleration of urbanization, the subway, as an important part of urban public transportation, is directly related to the overall operation efficiency of the city and the quality of life of citizens. The pantograph is a key component for subway vehicles to obtain electrical energy from the contact network. Whether its performance is stable or not is directly related to the normal operation of the subway train. In a complex and changeable operating environment, the pantograph may encounter various emergencies, such as air circuit failure, circuit failure, mechanical failure, etc., which may cause the pantograph to fail to rise normally and contact the contact network, thereby causing train suspension or accidents, which will have a significant impact on passenger safety, public transportation order and even social and economic activities. The existing pantograph design focuses on performance optimization under normal operation, and the research and test platform construction of emergency pantograph lifting mechanism are relatively lagging behind. The lack of a special emergency pantograph lifting test platform makes it difficult to effectively carry out the application verification of new technologies and new materials and fault simulation tests. Therefore, in order to solve the problem that the pantograph cannot be raised normally and contact the contact network, it is necessary to provide a set of pantograph emergency pantograph lifting test platform. Through the pantograph emergency pantograph raising test platform, firstly, potential problems can be discovered and solved in advance, the occurrence rate of failures can be reduced, and the long-term maintenance costs can be lowered; secondly, it can be used for employee training in related positions such as subway vehicle operation and maintenance, so as to improve the company's employees' emergency response capabilities for vehicle failures; thirdly, it can be used for daily practical teaching in the college to improve students' professional and technical capabilities and help achieve the training goal of taking up employment upon graduation. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a control circuit for a pantograph emergency pantograph raising test device.

[0004] The objective of the present invention is achieved through the following technical solutions: The invention discloses a control circuit for a pantograph emergency pantograph raising test device, comprising a pantograph emergency pantograph raising power supply activation circuit, a pantograph emergency pantograph raising control circuit and a pantograph emergency pantograph raising pump control circuit; The pantograph emergency pantograph power activation circuit includes a first power module, an electric whistle, a second power module, a power indicator light, a voltmeter, a battery control unit, a train activation indicator light, an emergency braking circuit, a pantograph interlocking circuit, and a driver's cab activation circuit; the first power module is connected to the electric whistle, the first power module is connected to the second power module, the voltmeter is connected in parallel to the battery control unit to form a first circuit, and the power indicator light, the first circuit, the train activation indicator light, the emergency braking circuit, the pantograph interlocking circuit, and the driver's cab activation circuit are connected in parallel to the second power module; The pantograph emergency pantograph raising control circuit includes a pantograph control circuit breaker, a second pantograph raising interlocking relay, a second cab activation relay, a first ADD fault relay, and a pantograph valve plate; the pantograph control circuit breaker is connected in parallel with the second cab activation relay, the second pantograph raising interlocking relay, the first ADD fault relay, and the pantograph valve plate; after the second cab activation relay is connected to the second emergency brake relay, the first pantograph lowering button and the first pantograph raising button are connected in parallel, the first pantograph lowering button is connected in turn to the second pantograph raising button and the pantograph raising relay, the first pantograph raising button is connected in turn to the second pantograph lowering button and the pantograph lowering relay, and the second pantograph raising interlocking relay is connected in series in turn. The third emergency brake relay, the first pantograph lowering and the first pantograph raising are connected in parallel, and the first pantograph raising holding relay is connected in parallel to the first pantograph raising; the pantograph valve plate is connected in parallel to the second pantograph raising holding relay, the pantograph lowering indicator light and the pantograph raising indicator light; the fourth emergency brake relay and the pantograph isolation relay are connected in parallel to the pantograph lowering relay, and the pantograph isolation relay is connected in series with the pantograph isolation indicator light; the second pantograph raising interlocking relay is also connected in series with the second ADD fault relay, and the second ADD fault relay is connected in parallel to the pantograph valve control relay and the third pantograph raising holding relay, and the pantograph valve control relay is also connected to the pantograph raising valve plate, and a pantograph raising control box is provided on the pantograph raising valve plate; The pantograph emergency pantograph pump control circuit includes an emergency pantograph control circuit breaker, an electric pump power supply circuit breaker, a pantograph pump start-up button, a pantograph control box and a first emergency electric pump relay. The emergency pantograph control circuit breaker is connected in series with the pantograph pump start-up button and then connected to the pantograph control box. The electric pump power supply circuit breaker is connected in parallel to the pantograph control box and the first emergency electric pump relay; the pantograph control box is respectively connected to the pantograph permission indicator light and the second emergency electric pump start relay; the first emergency electric pump relay is connected in series with the pantograph pump working indicator light, and the emergency pantograph pump in the pantograph control box is connected in parallel between the first emergency electric pump relay and the pantograph pump working indicator light.

[0005] Furthermore, in the pantograph emergency pantograph raising power activation circuit, the electric horn and the electric horn button are connected in series, and the battery control unit has two switches, including an input switch and a disconnect switch, the input switch is connected to the train activation relay, and the disconnect switch is connected to the train activation disconnect relay; The emergency brake circuit includes a first emergency brake relay, an emergency brake button, a release light and a fifth emergency brake relay, the first emergency brake relay and the emergency brake button are connected in parallel, the first emergency brake relay and the release light are connected, and the emergency brake button and the fifth emergency brake relay are connected; The bow raising interlock circuit includes a first bow raising interlock relay, a first bow raising interlock button, a second bow raising interlock button, a bow raising interlock indicator light and a third bow raising interlock relay, the first bow raising relay and the first status display module are connected in parallel, the first bow raising interlock relay is connected to the bow raising interlock indicator light, the first bow raising interlock button, the second bow raising interlock button and the third bow raising interlock relay are connected in series in sequence; The first driver's cab activation circuit includes a first driver's cab activation relay, a driver's cab activation button, a third driver's cab activation relay and a driver's cab activation indicator light. The first driver's cab activation relay and the driver's cab activation button are connected in parallel, the first driver's cab activation relay is connected to the driver's cab activation indicator light, and the driver's cab activation switch is connected to the third driver's cab activation.

[0006] Furthermore, the pantograph valve plate includes two pantograph ADD switches connected in parallel.

[0007] Furthermore, a pressure switch is provided in the bow raising control box.

[0008] The beneficial effects of the present invention are: 1) The present invention optimizes and designs the control circuit of the pantograph (airbag pantograph) according to the actual situation on the enterprise site, which is suitable for most of the on-site needs of the enterprise; it can provide a practical teaching and training platform for emergency pantograph raising for enterprise employees and college students, so as to enhance the emergency handling capabilities of employees and students for vehicle failures.

[0009] 2) The present invention performs daily pantograph maintenance operations with and without power according to the on-site vehicle pantograph maintenance procedures of the enterprise, meeting the daily maintenance needs of most enterprise employees; the normal pantograph raising and lowering test can be performed according to the on-site process flow of the enterprise: first check the voltmeter and pressure gauge, then activate the train and the driver's cab, then start the emergency brake button and the pantograph raising interlock to control the pantograph raising, then check the pantograph raising status, then control the pantograph lowering and check the pantograph lowering status, and finally cut off the power.

[0010] 3) The present invention can perform an emergency pantograph raising test (with electricity but no gas) according to the on-site process flow of the enterprise: first check the voltmeter and the pressure gauge, then activate the train and the driver's cab, then start the emergency brake button and the pantograph raising interlock, and finally perform emergency pantograph raising control and check the pantograph raising status.

[0011] 4) The present invention provides a pantograph emergency raising practical teaching and training platform for enterprise employees and college students to improve their emergency handling capabilities for vehicle failures. It can be used as a training device for enterprise employees and college students before participating in vocational skills competitions to improve the competition results of the players. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1A schematic diagram of a pantograph emergency pantograph raising power supply activation circuit according to an embodiment of the present invention; Figure 2 A schematic diagram of a pantograph emergency pantograph raising control circuit according to an embodiment of the present invention; Figure 3 A schematic diagram of a pantograph emergency pantograph raising pump control circuit according to an embodiment of the present invention; Figure 4 Schematic diagram of the bow raising control box circuit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0014] The invention discloses a control circuit for a pantograph emergency pantograph raising test device, comprising a pantograph emergency pantograph raising power supply activation circuit, a pantograph emergency pantograph raising control circuit and a pantograph emergency pantograph raising pump control circuit.

[0015] The pantograph emergency pantograph power activation circuit includes the first power module, electric whistle, second power module, power indicator light, voltmeter, battery control unit, train activation indicator light, emergency brake circuit, pantograph interlocking circuit and driver's cab activation circuit. The schematic diagram is shown in Figure 1As shown; the first power module is connected to the electric whistle, the first power module is connected to the second power module, the voltmeter is connected in parallel to the battery control unit to form a first circuit, the power indicator light, the first circuit, the train activation indicator light, the emergency brake circuit, the pantograph interlocking circuit and the driver's cab activation circuit are connected in parallel to the second power module; in the pantograph emergency pantograph power activation circuit, the electric whistle and the electric whistle button are connected in series, the battery control unit has a two-speed switch, including an input switch and a cut-off switch, the input switch is connected to the train activation relay, and the cut-off switch is connected to the train activation disconnect relay; the emergency brake circuit includes a first emergency brake relay, an emergency brake button, a release light and a fifth emergency brake relay, the first emergency brake relay and the emergency brake button are connected in parallel, the first emergency brake relay and the release light The first state display module is connected in parallel with the first state display module, the ... Then, put the control switch of the battery control unit 01-SM01 in the on position, the train will activate the entire test platform, and the train activation indicator 01-H01 will light up. After pressing the electric whistle button, the electric whistle will sound normally. During this process, the control circuits such as the first emergency brake button relay 01-K03, the first pantograph interlock relay 01-K04 and the first driver's cab activation relay 01-K05 will also be powered, and will be energized after the response control conditions are met, and the corresponding indicators will light up.

[0016] The pantograph emergency pantograph raising control circuit includes a pantograph control circuit breaker, a second pantograph raising interlocking relay, a second cab activation relay, a first ADD fault relay, and a pantograph valve plate. The schematic diagram is shown in FIG. Figure 2As shown; the pantograph control circuit breaker is connected in parallel with the second driver's cab activation relay, the second pantograph raising interlock relay, the first ADD fault relay and the pantograph valve plate; after the second driver's cab activation relay is connected to the second emergency brake relay, the first pantograph lowering button and the first pantograph raising button are connected in parallel, the first pantograph lowering button is connected in sequence to the second pantograph raising button and the pantograph raising relay, the first pantograph raising button is connected in sequence to the second pantograph lowering button and the pantograph lowering relay, the second pantograph raising interlock relay is connected in series with the third emergency brake relay, the first pantograph lowering and the first pantograph raising, and the first pantograph raising holding relay is connected in parallel with the first pantograph raising button On; the pantograph valve plate is connected in parallel to the second pantograph raising holding relay, the pantograph lowering indicator light and the pantograph raising indicator light; the fourth emergency brake relay and the pantograph isolation relay are connected in parallel to the pantograph lowering relay, and the pantograph isolation relay is also connected in series with the pantograph isolation indicator light; the second pantograph raising interlocking relay is also connected in series with the second ADD fault relay, and the second ADD fault relay is connected in parallel to the pantograph valve control relay and the third pantograph raising holding relay; the pantograph valve plate includes two pantograph ADD switches connected in parallel, and the pantograph valve control relay is also connected to the pantograph raising valve plate, and a pantograph raising control box is provided on the pantograph raising valve plate, as shown in the schematic diagram Figure 4 As shown. Its working principle is: after the pantograph control circuit breaker 02-F01 is successfully closed, the train system is activated and powered on, and the emergency brake button 01-S03 is not pressed, the first pantograph raising interlock button and the first pantograph raising interlock button are not pressed (01-S04.1 and 01-S04.2 are not pressed), and the driver's cab activation button is not pressed (01-S05 is pressed). At this time, if the second pantograph raising button 02-S01 is pressed, the pantograph raising relay 02-K01 will be energized. Under the condition that the pantograph lowering 02-K02 and the ADD fault relay 02-K04 are not energized, the pantograph air valve control 02-K05 and the third pantograph raising pantograph holding relay 02-K03 will be energized, and the pantograph air circuit will be connected, thereby realizing the raising of the pantograph. When the air pressure of the pantograph raising airbag reaches 6bar, the pantograph raising indicator light 02-H03 will light up, indicating that the pantograph raising operation is completed. On the contrary, when the second pantograph lowering button 02-S02 is pressed, the pantograph lowering relay 02-K02 will be energized, causing the circuits of the pantograph air valve control 02-K05 and the third pantograph raising and holding relay 02-K03 to be disconnected. Subsequently, the pantograph air valve control 02-K05 will exhaust air, and the pantograph will be lowered. When the air pressure of the pantograph raising airbag drops to 3.5 bar, the pantograph lowering indicator light 02-H04 will light up, indicating that the pantograph lowering operation is complete. This control circuit has three built-in protection measures, namely the emergency brake button, the pantograph isolation signal, and the ADD fault signal. Once any of these conditions is triggered, the pantograph will automatically lower to achieve protection.

[0017] The pantograph emergency pantograph pump control circuit includes an emergency pantograph control circuit breaker, an electric pump power supply circuit breaker, a pantograph pump input button, a pantograph control box and a first emergency electric pump relay. Figure 3 As shown; the emergency bow lifting control circuit breaker is connected in series with the bow lifting pump input button and then connected to the bow lifting control box, and the electric pump power supply circuit breaker is connected in parallel to the bow lifting control box and the first emergency electric pump relay; the bow lifting control box is connected to the pantograph permission indicator light and the second emergency electric pump start relay respectively; the first emergency electric pump relay is connected in series with the bow lifting pump working indicator light, and the emergency bow lifting pump in the bow lifting control box is connected in parallel between the first emergency electric pump relay and the bow lifting pump working indicator light. A pressure switch is provided in the bow lifting control box. Its working principle is: in an emergency situation with electricity but no gas (with DC110V power supply and no compressed air), the emergency bow lifting control circuit breaker 03-F03 and the electric pump power supply circuit breaker 03-F04 need to be closed, and then the bow lifting pump input button 03-S03 is placed in the input state. When the pressure switch U08 in the pantograph valve box 03-A03 detects that the internal air pressure is lower than 4.0 bar, the first emergency electric pump relay 22-M01 will automatically start, and the pantograph pump working indicator 03-H02 will light up. Once the pressure switch U08 in the pantograph control box 03-A03 detects that the air pressure exceeds 6.5 bar, the first emergency electric pump start relay will stop running, and the pantograph permission indicator 03-H01 will light up.

[0018] The present invention can carry out a pantograph emergency pantograph raising test according to the on-site process flow of the enterprise. When there is electricity but no air, an electric pump is controlled to perform emergency pantograph raising. When there is no electricity but air, a pantograph raising solenoid valve is used to manually control the pantograph raising air circuit for emergency pantograph raising. When there is no electricity and no air, a foot pump is used to first inflate the pantograph, and after the air pressure is sufficient, emergency pantograph raising is performed in a mode of having air but no electricity.

[0019] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A control circuit for a pantograph emergency pantograph raising test device, characterized in that: It includes a pantograph emergency pantograph raising power supply activation circuit, a pantograph emergency pantograph raising control circuit and a pantograph emergency pantograph raising pump control circuit; The pantograph emergency pantograph power activation circuit includes a first power module, an electric whistle, a second power module, a power indicator light, a voltmeter, a battery control unit, a train activation indicator light, an emergency braking circuit, a pantograph interlocking circuit, and a driver's cab activation circuit; the first power module is connected to the electric whistle, the first power module is connected to the second power module, the voltmeter is connected in parallel to the battery control unit to form a first circuit, and the power indicator light, the first circuit, the train activation indicator light, the emergency braking circuit, the pantograph interlocking circuit, and the driver's cab activation circuit are connected in parallel to the second power module; The pantograph emergency pantograph raising control circuit includes a pantograph control circuit breaker, a second pantograph raising interlocking relay, a second cab activation relay, a first ADD fault relay, and a pantograph valve plate; the pantograph control circuit breaker is connected in parallel with the second cab activation relay, the second pantograph raising interlocking relay, the first ADD fault relay, and the pantograph valve plate; after the second cab activation relay is connected to the second emergency brake relay, the first pantograph lowering button and the first pantograph raising button are connected in parallel, the first pantograph lowering button is connected in turn to the second pantograph raising button and the pantograph raising relay, the first pantograph raising button is connected in turn to the second pantograph lowering button and the pantograph lowering relay, and the second pantograph raising interlocking relay is connected in series in turn. The third emergency brake relay, the first pantograph lowering and the first pantograph raising are connected in parallel, and the first pantograph raising holding relay is connected in parallel to the first pantograph raising; the pantograph valve plate is connected in parallel to the second pantograph raising holding relay, the pantograph lowering indicator light and the pantograph raising indicator light; the fourth emergency brake relay and the pantograph isolation relay are connected in parallel to the pantograph lowering relay, and the pantograph isolation relay is also connected in series with the pantograph isolation indicator light; the second pantograph raising interlocking relay is connected in series with the second ADD fault relay, and the second ADD fault relay is connected in parallel to the pantograph valve control relay and the third pantograph raising holding relay, and the pantograph valve control relay is also connected to the pantograph raising valve plate, and a pantograph raising control box is provided on the pantograph raising valve plate; The pantograph emergency pantograph pump control circuit includes an emergency pantograph control circuit breaker, an electric pump power supply circuit breaker, a pantograph pump start-up button, a pantograph control box and a first emergency electric pump relay. The emergency pantograph control circuit breaker is connected in series with the pantograph pump start-up button and then connected to the pantograph control box. The electric pump power supply circuit breaker is connected in parallel to the pantograph control box and the first emergency electric pump relay; the pantograph control box is respectively connected to the pantograph permission indicator light and the second emergency electric pump start relay; the first emergency electric pump relay is connected in series with the pantograph pump working indicator light, and the emergency pantograph pump in the pantograph control box is connected in parallel between the first emergency electric pump relay and the pantograph pump working indicator light.

2. A control circuit for a pantograph emergency pantograph raising test device according to claim 1, characterized in that: In the pantograph emergency pantograph raising power activation circuit, the electric horn and the electric horn button are connected in series, and the battery control unit has two switches, including an input switch and a cut-off switch, the input switch is connected to the train activation relay, and the cut-off switch is connected to the train activation disconnect relay; The emergency brake circuit includes a first emergency brake relay, an emergency brake button, a release light and a fifth emergency brake relay, the first emergency brake relay and the emergency brake button are connected in parallel, the first emergency brake relay and the release light are connected, and the emergency brake button and the fifth emergency brake relay are connected; The bow raising interlock circuit includes a first bow raising interlock relay, a first bow raising interlock button, a second bow raising interlock button, a bow raising interlock indicator light and a third bow raising interlock relay, the first bow raising relay and the first status display module are connected in parallel, the first bow raising interlock relay is connected to the bow raising interlock indicator light, the first bow raising interlock button, the second bow raising interlock button and the third bow raising interlock relay are connected in series in sequence; The first driver's cab activation circuit includes a first driver's cab activation relay, a driver's cab activation button, a third driver's cab activation relay and a driver's cab activation indicator light. The first driver's cab activation relay and the driver's cab activation button are connected in parallel, the first driver's cab activation relay is connected to the driver's cab activation indicator light, and the driver's cab activation switch is connected to the third driver's cab activation.

3. A control circuit for a pantograph emergency pantograph raising test device according to claim 1, characterized in that: The pantograph valve plate includes two pantograph ADD switches connected in parallel.

4. A control circuit for a pantograph emergency pantograph raising test device according to claim 1, characterized in that: A pressure switch is arranged in the bow raising control box.

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