阅读说明：本技术 用于工程车空气管路系统的风压监测保护系统 (Wind pressure monitoring and protecting system for air pipeline system of engineering truck ) 是由 王靖平 王文斌 路海峰 母特 赵国栋 李得志 杨晓燕 于 2019-12-04 设计创作，主要内容包括：本发明公开了一种用于工程车空气管路系统的风压监测保护系统,包括：总风压力开关安装于总风管上；制动缸压力开关安装于制动缸管上；保压阀设于总风缸与列车管之间的供风通路；紧急放风阀安装于列车管上,用于排出列车管中的空气；总放风阀设置于总风管上,用于排出总风管中的空气；接触器串联于工程车的走行控制系统中,用于切断工程车的走行动力；报警器；中央处理器分别与总风压力开关、制动缸压力开关、保压阀、紧急放风阀、总放风阀、接触器、报警器信号连接。本系统能够在总风缸、制动缸、列车管的实时压力过高或过低时做出相应的保护措施,保证工程车的行车安全。(The invention discloses a wind pressure monitoring and protecting system for an air pipeline system of a machineshop truck, which comprises: the main air pressure switch is arranged on the main air pipe; the brake cylinder pressure switch is arranged on the brake cylinder pipe; the pressure retaining valve is arranged on an air supply passage between the main air cylinder and the train pipe; the emergency air release valve is arranged on the train pipe and used for discharging air in the train pipe; the main air release valve is arranged on the main air pipe and used for discharging air in the main air pipe; the contactor is connected in series in a traveling control system of the engineering truck and used for cutting off traveling power of the engineering truck; an alarm; the central processing unit is respectively in signal connection with the main air pressure switch, the brake cylinder pressure switch, the pressure retaining valve, the emergency release valve, the main release valve, the contactor and the alarm. The system can make corresponding protective measures when the real-time pressure of the main air reservoir, the brake cylinder and the train pipe is too high or too low, and the driving safety of the engineering truck is ensured.)

1. The utility model provides a wind pressure monitoring protection system for machineshop car air piping system, air piping system includes total reservoir, checking cylinder and train pipe, total reservoir provides power for the pneumatic part in the machineshop car carriage through total tuber pipe, gives through the relay valve the train pipe is inflated, through the distributing valve to inflate in the checking cylinder, a serial communication port, wind pressure monitoring protection system includes:

the main air pressure switch is arranged on the main air pipe;

a brake cylinder pressure switch mounted on the brake cylinder tube;

the pressure retaining valve is arranged on an air supply passage between the main air cylinder and the train pipe;

the emergency air release valve is mounted on the train pipe and used for discharging air in the train pipe;

the main air release valve is arranged on the main air pipe and used for discharging air in the main air pipe;

the contactor is connected in series in a traveling control system of the engineering truck and used for cutting off traveling power of the engineering truck;

an alarm;

the central processing unit is in signal connection with the main wind pressure switch, the brake cylinder pressure switch, the pressure retaining valve, the emergency release valve, the main release valve, the contactor and the alarm respectively.

2. The wind pressure monitoring and protection system for a machineshop truck air duct system of claim 1, wherein the main wind pressure switch comprises a high pressure switch and a low pressure switch, the high pressure switch being closed when the pressure in the main wind duct is above a first safety setting and the low pressure switch being open when the pressure in the main wind duct is below a second safety setting; when the pressure in the brake cylinder pipe is higher than a third safety set point, the brake cylinder pressure switch is closed;

when the high-pressure switch is closed, the central processing unit sends a control instruction to the alarm to enable the alarm to send alarm information for starting the main blow-off valve, and controls the pressure retaining valve and the emergency blow-off valve to be powered on under the condition that the main blow-off valve is not opened within preset time after the control instruction is sent out, so that an air supply passage between the main air cylinder and the train pipe is cut off, air in the train pipe is discharged, and emergency braking is achieved;

when the low-voltage switch is disconnected, the central processor controls the pressure retaining valve and the emergency air release valve to be electrified, an air supply passage between the main air cylinder and the train pipe is cut off, air in the train pipe is discharged, and emergency braking is achieved;

when the brake cylinder pressure switch is closed, the central processing unit controls the contactor to be electrified so as to cut off the walking power of the engineering truck and enable the engineering truck to idle.

3. The wind pressure monitoring and protecting system for an air pipeline system of a machineshop truck as claimed in claim 2, wherein the first safety setting is 880-920 kpa, the second safety setting is 530-570 kpa, and the third safety setting is 240-280 kpa.

4. The wind pressure monitoring and protecting system for an air pipeline system of a construction truck according to claim 2, wherein a delay relay is arranged in the central processing unit, a first normally open contact and a second normally open contact of the delay relay are electrically connected with the pressure retaining valve and the emergency release valve respectively, when the high-pressure switch is closed, the central processing unit controls the first normally open contact and the second normally open contact of the delay relay to be powered, and the delay time of the delay relay is the preset time.

5. The wind pressure monitoring and protecting system for an air pipeline system of a machineshop truck according to claim 2, wherein the normally closed contact of the time delay relay is electrically connected to the alarm, when the high-voltage switch is closed, the cpu controls the normally closed contact of the time delay relay to be energized, and the normally closed contact of the time delay relay is opened after the energization time reaches the predetermined time.

6. The wind pressure monitoring and protection system for a machineshop truck air duct system of claim 1, wherein the alarm is a voice alarm.

7. The wind pressure monitoring and protecting system for the air pipeline system of the engineering truck as claimed in claim 1, further comprising a sensor assembly, wherein said sensor assembly comprises a main air pipe sensor, a brake cylinder sensor and a train pipe sensor, said main air pipe sensor is disposed on said main air pipe for detecting the pressure P1 in said main air pipe, said brake cylinder sensor is disposed on said brake cylinder for detecting the pressure P2 in said brake cylinder, said train pipe sensor is disposed on said train pipe for detecting the pressure P3 in said train pipe, said sensor assembly is in signal connection with said central processing unit, and sends said pressure P1, pressure P2 and pressure P3 to said central processing unit.

8. The wind pressure monitoring and protection system for a machineshop truck air duct system of claim 7, further comprising a display screen connected to said cpu for displaying said pressure P1, pressure P2, and pressure P3.

9. The wind pressure monitoring and protection system for an air pipeline system of a machineshop truck according to claim 1, further comprising a master control switch, wherein the master control switch is disposed between the central processing unit and a power supply.

10. The wind pressure monitoring protection system for a machineshop car air duct system of claim 1, further comprising a main wind control switch for receiving a user input to actuate the main bleed valve.

Technical Field

The invention belongs to the technical field of railway engineering vehicles, and particularly relates to a wind pressure monitoring and protecting system for an air pipeline system of an engineering vehicle.

Background

The air pipeline system is directly related to the operation safety of the engineering truck, is an important component of the engineering truck, when the pressure controller of the engineering truck cannot work normally and the air compressor has problems due to some reason, the pressure will continuously rise or fall, when the total wind pressure exceeds the pressure born by the system, serious consequences can occur, when the total wind pressure is too low, the braking and the relieving of the truck can be seriously influenced, and if the driver does not find the problems, the inestimable consequences can be caused. In addition, the pressure of the total wind, the train pipe and the brake cylinder also needs to be monitored at any time, the two pressures of the general engineering vehicle are displayed through a wind pressure gauge, and if the wind pressure gauge fails, a driver cannot monitor the pressure of each pipe through the wind gauge, so that the pressure monitoring device is very dangerous for driving.

Therefore, the development of a wind pressure monitoring and protecting system for an air pipeline system of a engineering truck is expected, corresponding protective measures can be taken when the real-time pressures of a main air cylinder, a brake cylinder and a train pipe are too high or too low, and the driving safety of the engineering truck is ensured.

Disclosure of Invention

The invention aims to provide a wind pressure monitoring and protecting system for an air pipeline system of a engineering truck, which can make corresponding protective measures when the real-time pressures of a main air cylinder, a brake cylinder and a train pipe are too high or too low so as to ensure the driving safety of the engineering truck.

In order to achieve the above object, the present invention provides a wind pressure monitoring and protecting system for an air pipeline system of a machineshop truck, the air pipeline system including a main reservoir, a brake cylinder and a train pipe, the main reservoir providing power to pneumatic components in a cabin of the machineshop truck through a main air pipe, the train pipe being charged with air through a relay valve, and the brake cylinder being charged with air through a distributing valve, the wind pressure monitoring and protecting system comprising:

the main air pressure switch is arranged on the main air pipe;

a brake cylinder pressure switch mounted on the brake cylinder tube;

the pressure retaining valve is arranged on an air supply passage between the main air cylinder and the train pipe;

the emergency air release valve is mounted on the train pipe and used for discharging air in the train pipe;

the main air release valve is arranged on the main air pipe and used for discharging air in the main air pipe;

the contactor is connected in series in a traveling control system of the engineering truck and used for cutting off traveling power of the engineering truck;

an alarm;

the central processing unit is in signal connection with the main wind pressure switch, the brake cylinder pressure switch, the pressure retaining valve, the emergency release valve, the main release valve, the contactor and the alarm respectively.

Preferably, the main wind pressure switch comprises a high voltage switch and a low voltage switch, wherein the high voltage switch is closed when the pressure in the main wind pipe is higher than a first safety set value, and the low voltage switch is opened when the pressure in the main wind pipe is lower than a second safety set value; when the pressure in the brake cylinder pipe is higher than a third safety set point, the brake cylinder pressure switch is closed;

when the high-pressure switch is closed, the central processing unit sends a control instruction to the alarm to enable the alarm to send alarm information for starting the main blow-off valve, and controls the pressure retaining valve and the emergency blow-off valve to be powered on under the condition that the main blow-off valve is not opened within preset time after the control instruction is sent out, so that an air supply passage between the main air cylinder and the train pipe is cut off, air in the train pipe is discharged, and emergency braking is achieved;

when the low-voltage switch is disconnected, the central processor controls the pressure retaining valve and the emergency air release valve to be electrified, an air supply passage between the main air cylinder and the train pipe is cut off, air in the train pipe is discharged, and emergency braking is achieved;

when the brake cylinder pressure switch is closed, the central processing unit controls the contactor to be electrified so as to cut off the walking power of the engineering truck and enable the engineering truck to idle.

Preferably, the first safety setting value is 880-920 kpa, the second safety setting value is 530-570 kpa, and the third safety setting value is 240-280 kpa.

Preferably, a time delay relay is arranged in the central processing unit, a first normally open contact and a second normally open contact of the time delay relay are respectively electrically connected with the pressure retaining valve and the emergency release valve, when the high-voltage switch is closed, the central processing unit controls the first normally open contact and the second normally open contact of the time delay relay to be electrified, and the time delay of the time delay relay is the preset time.

Preferably, the normally closed contact of the time delay relay is electrically connected with the alarm, when the high-voltage switch is closed, the central processing unit controls the normally closed contact of the time delay relay to be electrified, and the normally closed contact of the time delay relay is disconnected after the electrification time reaches the preset time.

Preferably, the alarm is a voice alarm.

Preferably, the train protection device further comprises a sensor assembly, wherein the sensor assembly comprises a main air pipe sensor, a brake cylinder sensor and a train pipe sensor, the main air pipe sensor is arranged on the main air pipe and used for detecting the pressure P1 in the main air pipe, the brake cylinder sensor is arranged on the brake cylinder and used for detecting the pressure P2 in the brake cylinder, the train pipe sensor is arranged on the train pipe and used for detecting the pressure P3 in the train pipe, and the sensor assembly is in signal connection with the central processing unit and sends the pressure P1, the pressure P2 and the pressure P3 to the central processing unit.

Preferably, the pressure gauge further comprises a display screen connected to the central processor for displaying the pressure P1, the pressure P2 and the pressure P3.

Preferably, the intelligent control system further comprises a master control switch, and the master control switch is arranged between the central processing unit and the power supply.

Preferably, the main wind control switch is further included and is used for receiving user input to start the main air release valve.

The invention has the beneficial effects that:

1. when the pressure in the main air pipe is higher than the range of the safe set value of the main air pressure switch, the alarm can give an alarm in time to prompt an operator, and when the operator cannot open the main air relief valve in time, a protection measure is automatically applied to start the pressure retaining valve and the emergency air relief valve to emergently brake the train; when the pressure in the brake cylinder is higher than the safe set value of the brake cylinder pressure switch, the contactor automatically cuts off the power of the engineering truck, the running power of the engineering truck is saved, and the service life of an engine is prolonged.

2. And a time delay relay is arranged, when the pressure of the total air cylinder is higher than a first safety set value, the time for opening the total air release valve is reserved for operating personnel, the direct emergency braking of the engineering truck is avoided, the normal operation of the engineering truck is ensured, and the engineering truck is overhauled after returning to a section.

3. Monitoring total wind pressure, checking cylinder pressure, train pipe pressure when with pressure sensor, converting pressure signal into current signal simultaneously, inputing central processing unit, through the conversion module in the central processing unit, showing pressure on the display screen, the driver can compare the numerical value that shows on blast gauge and the display screen, if the blast gauge trouble, can observe total wind, checking cylinder, train pipe pressure through the pressure display on the display screen, master the user state of brake.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.

Fig. 1 shows a schematic diagram of input and output signals of a central processing unit according to an embodiment of the present invention.

FIG. 2 shows a logic ladder diagram of a central processor, according to one embodiment of the present invention.

Description of the reference numerals

1. A central processing unit; 2. a high voltage switch; 3. a low voltage switch; 4. a brake cylinder pressure switch; 5. a pressure retaining valve; 6. an emergency release valve; 7. a contactor; 8. a voice alarm; 9. a display screen; 10. a master control switch; 11. a total wind pressure sensor; 12. a brake cylinder pressure sensor; 13. a train pipe pressure sensor; 14. a main air release valve 15 and a main air control switch.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The air pipeline system comprises a main air cylinder, a brake cylinder and a train pipe, wherein the main air cylinder supplies power to pneumatic components in a carriage of the engineering truck through a main air pipe, the train pipe is charged with air through a relay valve, and the brake cylinder is charged with air through a distribution valve.

A wind pressure monitoring protection system for machineshop car air piping system includes:

the main air pressure switch is arranged on the main air pipe;

the brake cylinder pressure switch is arranged on the brake cylinder pipe;

the pressure retaining valve is arranged on an air supply passage between the main air cylinder and the train pipe;

the emergency air release valve is arranged on the train pipe and used for discharging air in the train pipe;

the main air release valve is arranged on the main air pipe and used for discharging air in the main air pipe;

the contactor is connected in series in a traveling control system of the engineering truck and used for cutting off traveling power of the engineering truck;

an alarm;

and the central processing unit is in signal connection with the main air pressure switch, the brake cylinder pressure switch, the pressure retaining valve, the emergency release valve, the main release valve, the contactor and the alarm respectively.

Specifically, when the pressure in the main air pipe is higher than the safety set value range of a main air pressure switch, the alarm can give an alarm in time to prompt an operator, and when the operator cannot open the main air release valve in time, a protection measure is automatically applied to start the pressure retaining valve and the emergency air release valve to make the train brake emergently; when the pressure in the brake cylinder is higher than the safe set value of the brake cylinder pressure switch, the contactor automatically cuts off the power of the engineering truck, the running power of the engineering truck is saved, and the service life of an engine is prolonged.

As a preferred scheme, the main wind pressure switch comprises a high-voltage switch and a low-voltage switch, when the pressure in the main wind pipe is higher than a first safety set value, the high-voltage switch is closed, and when the pressure in the main wind pipe is lower than a second safety set value, the low-voltage switch is opened; when the pressure in the brake cylinder pipe is higher than a third safety set value, the brake cylinder pressure switch is closed;

when the high-pressure switch is closed, the central processing unit sends a control instruction to the alarm to enable the alarm to send alarm information for starting the main air release valve, controls the pressure retaining valve and the emergency air release valve to be powered on under the condition that the main air release valve is not opened within preset time after the control instruction is sent out, cuts off an air supply passage between the main air cylinder and the train pipe, discharges air in the train pipe and realizes emergency braking;

when the low-voltage switch is disconnected, the central processing unit controls the pressure retaining valve and the emergency air release valve to be electrified, an air supply passage between the main air cylinder and the train pipe is cut off, air in the train pipe is discharged, and emergency braking is realized;

when the brake cylinder pressure switch is closed, the central processor controls the contactor to be electrified so as to cut off the walking power of the engineering truck and enable the engineering truck to idle.

Preferably, the first safety setting value is 880-920 kpa, the second safety setting value is 530-570 kpa, and the third safety setting value is 240-280 kpa.

As the preferred scheme, a time delay relay is arranged in the central processing unit, a first normally open contact and a second normally open contact of the time delay relay are respectively and electrically connected with the pressure retaining valve and the emergency air release valve, when the high-voltage switch is closed, the central processing unit controls the first normally open contact and the second normally open contact of the time delay relay to be electrified, and the time delay time of the time delay relay is preset time.

Specifically, a time delay relay is arranged, when the pressure of the main air cylinder pressure is higher than a first safety set value, the time for opening the main air release valve is reserved for operating personnel, the direct emergency braking of the engineering truck is avoided, the normal operation of the engineering truck is guaranteed, and the engineering truck is overhauled after returning to a section.

As the preferred scheme, the normally closed contact of the time delay relay is electrically connected with the alarm, when the high-voltage switch is closed, the central processing unit controls the normally closed contact of the time delay relay to be electrified, and the normally closed contact of the time delay relay is disconnected after the electrified time reaches the preset time.

Preferably, the alarm is a voice alarm.

Specifically, under the condition that the total wind is too high, the driver is reminded of paying attention through voice alarm.

Preferably, the train protection device further comprises a sensor assembly, wherein the sensor assembly comprises a main air pipe sensor, a brake cylinder sensor and a train pipe sensor, the main air pipe sensor is arranged on the main air pipe and used for detecting pressure P1 in the main air pipe, the brake cylinder sensor is arranged on the brake cylinder and used for detecting pressure P2 in the brake cylinder, the train pipe sensor is arranged on the train pipe and used for detecting pressure P3 in the train pipe, and the sensor assembly is in signal connection with the central processing unit and sends the pressure P1, the pressure P2 and the pressure P3 to the central processing unit.

Preferably, the pressure gauge further comprises a display screen, wherein the display screen is connected with the central processing unit and is used for displaying the pressure P1, the pressure P2 and the pressure P3.

Specifically, with total wind pressure of pressure sensor subassembly real-time supervision, brake cylinder pressure, train pipe pressure, convert pressure signal into current signal simultaneously, input central processing unit, through the conversion module in the central processing unit, show pressure on the display screen, the driver can compare the numerical value that shows on the blast gauge and the display screen, if the blast gauge trouble, can observe total wind, brake cylinder, train pipe pressure through the pressure display on the display screen, master the user state of brake.

As a preferred scheme, the intelligent control system also comprises a master control switch, and the master control switch is arranged between the central processing unit and the power supply. .

Preferably, the system further comprises a main wind control switch, wherein the main wind control switch is used for receiving user input to start the main air release valve.