WO2013134921A1

WO2013134921A1 - Air charging and discharging control device for air spring support system

Info

Publication number: WO2013134921A1
Application number: PCT/CN2012/072244
Authority: WO
Inventors: 石军; 郑晖; 张华�; 王磊
Original assignee: 青岛四方车辆研究所有限公司
Priority date: 2012-03-13
Filing date: 2012-03-13
Publication date: 2013-09-19
Also published as: IN2014KN01762A

Abstract

Disclosed is an air charging and discharging control device for an air spring support system, the control device comprising a site control box (1) and an indoor control box (2). An air charging electromagnetic valve (3) and an air discharging electromagnetic valve (4) are mounted in the site control box (1). A PLC controller is mounted in the indoor control box (2), and the PLC controller is electrically connected with the air charging electromagnetic valve (3) and the air discharging electromagnetic valve (4) respectively, and is electrically connected with a pressure transmitter (5) which is arranged on an additional air chamber (9) of the air spring support system. By controlling the actions of the air charging electromagnetic valve (3) and the air discharging electromagnetic valve (4) with the PLC controller, air is charged into and discharged from the air spring support system so that the air spring support system has different inflation pressures, and static support for different vehicle weights is realized.

Description

Air spring support system charging and exhaust control device

Technical field

The invention relates to a railway vehicle fatigue and vibration test bed air spring support system, in particular to a railway freight car fatigue and vibration test stand air spring support system charge and exhaust control device.

Background technique

In the fatigue test condition of the railway vehicle body, the air spring support system mainly plays the static bearing effect on the railway truck body and the longitudinal loading rod. When the vehicle body is tested, it is followed by the vehicle body loading actuator, the air spring. The system does not perform charging and exhausting operations. Due to the different weights of different truck bodies, it is necessary to make the air spring system have different bearing capacity. The bearing capacity of the air spring bearing system is realized by adjusting the compressed air pressure inside the air spring. Therefore, a special charging and exhausting is required. The control device implements charge and exhaust control of the air spring support system. At the same time, in order to make the air spring support system have a stable working state, the charge and exhaust control system should also have the functions of overpressure alarm, leakage alarm and automatic charging and exhausting. At present, there is no device capable of realizing the control function of the professional. The present invention is a device specially developed for the problem of charge and exhaust control of the air spring support system of the railway truck fatigue and vibration test bed.

Summary of the invention

The object of the present invention is to provide the air spring support system charge and exhaust control device for the air spring support system of the railway freight car fatigue and vibration test stand, which is used for the fatigue and vibration of the railway vehicle. The test bed air spring support system realizes the charge and exhaust control of the air spring, and the air spring can have different inflation pressures, thereby realizing static load on different vehicle body weights.

The technical solution of the present invention is: an air spring support system charging and exhausting control device, the charging and exhausting control device is provided with a field control box and an indoor control box, and a pneumatic solenoid valve and an exhaust solenoid valve are installed in the field control box. One end of the pneumatic solenoid valve is connected to the main air supply line, and one end is connected with an additional air chamber of the air spring support system for inflating the air spring support system, and one end of the exhaust solenoid valve is connected with the additional air chamber of the air spring support system. One end is connected to the atmosphere for exhaust control of the air spring support system; a PLC controller is installed in the indoor control box, and a human-machine interface is connected with the PLC controller, and the PLC controller is respectively connected with the gas-filled solenoid valve and the row The gas solenoid valve is electrically connected and electrically connected to a pressure transmitter disposed on the additional air chamber of the air spring support system;

Preferably, there are six gas-filling solenoid valves and exhaust gas solenoid valves, one end of each of which is connected to the main air supply line, and one end is connected to an additional air chamber of the air spring support system; each exhaust solenoid valve One end is connected to an additional air chamber of the air spring support system, and one end is connected to the atmosphere;

Preferably, both the pneumatic solenoid valve and the exhaust solenoid valve are two-position two normally closed solenoid valves;

Preferably, the on-site control box is provided with an inflation button and an exhaust button, which are respectively connected with the inflation solenoid valve and the exhaust solenoid valve for controlling the charging and exhausting of the air spring support system;

Preferably, the indoor control box is provided with a pressure alarm device for overpressure alarm and pressure leakage alarm;

Preferably, the pressure alarm device is a pressure alarm, and the pressure alarm is connected to the PLC controller;

Preferably, the main air supply line is provided with a ball valve for controlling charging and exhausting, and the main air supply line, the gas filling electromagnetic valve and the exhaust electromagnetic valve are respectively connected with a pressure gauge, and the exhaust electromagnetic valve is connected with a muffler;

Preferably, the main air supply line is connected to an air compressor, and the first oil water filter, the gas storage tank, the second oil water filter and the pressure reducing valve are sequentially connected between the main air supply line and the air compressor.

The invention has the beneficial effects that the invention controls the action of the pneumatic solenoid valve and the exhaust solenoid valve through the PLC controller, and the air spring support system is charged and exhausted, so that the air spring support system has different inflation pressures, and the different vehicles are realized. Static load of body weight. The charging and exhausting control device of the invention can simultaneously realize the simultaneous charging and discharging control of the six-way air spring, and can also perform the charging and exhausting control of the single air spring, and at the same time, the pressure alarm device is provided, and the overpressure alarm and the pressure leakage alarm are provided. The function ensures that the air spring has the bearing capacity required by the test bench.

DRAWINGS

1 is an electrical schematic diagram of a specific embodiment of the present invention.

2 is a piping layout diagram of an air spring support system in accordance with an embodiment of the present invention.

3 is an electrical schematic diagram of a field control box in accordance with an embodiment of the present invention.

detailed description

The invention will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 3, an air spring support system charging and exhausting control device is provided with a field control box 1 and an

indoor control box

2, and 6 pneumatic solenoid valves are installed in the field control box. And 6 exhaust solenoid valves 4, the pneumatic solenoid valve 3 and the exhaust solenoid valve 4 are both two-position two normally closed solenoid valves, each of which is connected to the main air supply line at one end and supported by an air spring at one end. The additional air chambers 9 of the system are connected to form an inflation pipeline for inflating the air spring support system; each of the exhaust solenoid valves is connected at one end to an additional air chamber 9 of the air spring support system, and one end is connected to the atmosphere to form An exhaust line for exhausting the air spring support system; the field control box 1 is provided with an inflation button and an exhaust button, respectively connected to the charge solenoid valve 3 and the exhaust solenoid valve 4 for controlling the air spring Charge and exhaust of the support system. A PLC controller and a man-machine interface are installed in the indoor control box 2, and the man-machine interface is connected with the PLC controller as a feedback input of the logic control input and the detection signal; the PLC controller is respectively associated with the charge solenoid valve 3 and the exhaust The solenoid valve 4 is electrically connected for controlling the action of the charge solenoid valve 3 and the exhaust solenoid valve 4, achieving charge and exhaust control, and electrically connecting with the pressure transmitter 5 disposed on the additional air chamber of the air spring support system to receive the pressure. Signal, real-time display and detection of pressure; indoor control box 2 is provided with pressure alarm device for overpressure alarm and pressure leakage alarm; pressure alarm device is pressure alarm, the pressure alarm is connected with PLC controller, when When the pressure detected by the pressure transmitter exceeds the set value, or the pressure is lower than the set value and the set value cannot be reached within 15 minutes, an alarm is issued. The main air supply line is provided with a ball valve 6 for controlling charging and exhausting, and the main air supply line, the gas filling solenoid valve 3 and the exhaust electromagnetic valve 4 are respectively connected with a pressure gauge 7, and the exhaust electromagnetic valve 4 is connected with a muffler 8; the main air supply pipe The road is connected to an air compressor 10, and a first oil water filter 11, a gas storage tank 12, a second oil water filter 13, and a pressure reducing valve 14 are sequentially connected between the main air supply line and the air compressor 10.

working principle:

The single-actual-manual control function of the indoor control box sets the control function to “single-manual” on the man-machine interface. At this time, the 6-way inflation pipelines are independent and need to be inflated for a certain way on the human-machine interface. Click the inflation button, the PLC controller outputs the command, and the inflation solenoid valve that controls the road can be inflated. Click the inflation button again to close the inflation solenoid valve to complete the inflation process. Similarly, when it is necessary to exhaust a certain way, click the exhaust button on the man-machine interface, the PLC controller outputs a command, and the exhaust solenoid valve that controls the way can be exhausted, and the exhaust button is clicked again. That is, the exhaust solenoid valve is closed to complete the exhaust process.

The single-action-automatic control function of the indoor control box sets the control function to “single-action-automatic” on the man-machine interface. At this time, the 6-channel inflation pipelines are independent, and need to be charged for a certain road. Set the pressure value in the loop parameter of a certain channel on the machine interface, and then click the inflation button, the PLC controller outputs the command, and the inflation solenoid valve that controls the way can be inflated. If the pressure reaches the set value, the inflation is turned off. The solenoid valve completes the inflation process; if the pressure exceeds the set value, the PLC controller outputs a command to turn on the exhaust solenoid valve that controls the passage to perform the exhaust operation. When the pressure reaches the set value, the exhaust solenoid valve is closed to complete the exhaust process.

The interlocking-manual control function of the indoor control box sets the control function to “linkage-manual” on the man-machine interface. At this time, the 6-way inflation pipelines are associated with each other, and at the same time, the charging and exhausting actions are performed, and when the 6-way inflation is required, Click on the inflating button of any circuit on the man-machine interface, the PLC controller outputs the command, and the 6 pneumatic solenoid valves that control the 6-way inflation pipeline can be inflated. Click the inflation button again to close the 6 inflatable electromagnetics. Valve to complete the inflation process. Similarly, when it is necessary to exhaust 6 channels, click the exhaust button of any circuit on the man-machine interface, the PLC controller outputs a command, and the 6 exhaust solenoid valves that control the 6-way exhaust pipe can be turned on. Exhaust, click the exhaust button again, that is, close the six exhaust solenoid valves to complete the exhaust process.

The interlocking-automatic control function of the indoor control box sets the control function to “linkage-automatic” on the man-machine interface. At this time, the 6-channel inflation pipelines are associated with each other, and at the same time, the inflation operation is performed, and the 6-channel inflation pipeline needs to be automatically When inflating, it is necessary to set the pressure value of each channel in the loop parameters of the 6-channel inflation pipeline on the man-machine interface, and then click the inflation button of any loop, the PLC controller outputs the command, and the control of the 6-channel inflation pipeline is turned on. The pneumatic solenoid valve can be inflated for 6 channels. If the pressure of a certain channel reaches the set value, the pneumatic solenoid valve of this way is closed, the inflation process is completed, and the other pipelines continue to be inflated to the set value, then the pneumatic solenoid valve is closed, and 6 channels are completed. During the inflation process, if a certain pressure exceeds the set value, the PLC controller outputs a command to turn on the exhaust solenoid valve that controls the road to perform the exhausting action, and the pressure reaches the set value type, that is, the exhaust solenoid valve is closed. , complete the exhaust process of the road.

The manual inflation function of the on-site control box installs a manual button for each of the inflation solenoid valve and the exhaust solenoid valve on the panel of the field control box, which can perform simple charge and exhaust control, and the pointer pressure is set on the field control box. The table shows the internal pressure of the 6-way air spring support system. When you need to inflate a certain way, just press the inflating button of this way, the inflating solenoid valve can inflate this way. When you stop the inflating, just press the inflating button again and close the inflating solenoid valve to complete the inflating function. For the same reason, when you need to exhaust a certain way, just press the exhaust button of this way, the exhaust solenoid valve can exhaust the road. When stopping the exhaust, just press the exhaust button again to close the exhaust. The solenoid valve can complete the exhaust function.

Overpressure alarm and leakage alarm function, on the man-machine interface of the indoor control box, set the pressure fluctuation range for a certain road, and the pressure transmitter feeds back the detected pressure signal to the PLC controller. When the pressure exceeds the set value, the pressure alarm will alarm, the alarm light will light up, and a beep will sound. When the pressure continues to fall below the set value, the pressure will not reach the set value within fifteen minutes, indicating the pipeline. There is leakage or insufficient pressure in the main air supply line. At this time, the pressure alarm starts to alarm, the alarm light lights up, and a beep sounds. Click the alarm on the man-machine interface to silence the sound, and the pressure alarm returns to the initial state to re-detect the air spring. The pressure of the support system changes.

Among them, the inflatable solenoid valve and the exhaust solenoid valve can also be set to 3, 4, 5, which constitutes 3, 4, and 5 channels of charge and exhaust pipes for charge and exhaust control, and even more road charge and exhaust control, Realize the charge and exhaust control of the multi-channel air spring support system.

The above specific embodiments are only intended to illustrate the technical solutions of the present invention, and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. The spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An air spring support system charging and exhausting control device is characterized in that: the charging and exhausting control device is provided with a field control box and an indoor control box, and a pneumatic solenoid valve and an exhaust solenoid valve are installed in the field control box, and the pneumatic solenoid valve is installed One end is connected to the main air supply line, and one end is connected with an additional air chamber of the air spring support system for inflating the air spring support system. One end of the exhaust solenoid valve is connected with an additional air chamber of the air spring support system, one end and the atmosphere Connected for exhaust control of the air spring support system; a PLC controller is installed in the indoor control box, and a human-machine interface is connected to the PLC controller, and the PLC controller is respectively connected with the charge solenoid valve and the exhaust solenoid valve Electrically connected and electrically connected to a pressure transmitter disposed on an additional air chamber of the air spring support system.

2. The air spring support system charging and exhausting control device according to claim 1, wherein each of the gas filling solenoid valve and the exhaust solenoid valve is provided, and each of the gas filling solenoid valves is connected to the main gas supply line at one end, one end. An additional plenum is coupled to the air spring support system; each exhaust solenoid valve is coupled at one end to an additional plenum of the air spring support system and at one end to the atmosphere.

3. The air spring support system charging and exhausting control device according to any one of claims 1 to 2, characterized in that both the gas filling solenoid valve and the exhaust gas solenoid valve are two-position two normally closed solenoid valves.

4. The air spring support system charging and exhausting control device according to claim 1, wherein the on-site control box is provided with an inflation button and an exhaust button, which are respectively connected with the inflation solenoid valve and the exhaust solenoid valve for controlling the air. Charge and exhaust of the spring support system.

5. The air spring support system charging and exhausting control device according to claim 1, wherein the indoor control box is provided with a pressure alarm device for an overpressure alarm and a pressure leak alarm.

6. The air spring support system charging and exhausting control device according to claim 5, wherein the pressure alarm device is a pressure alarm, and the pressure alarm device is connected to the PLC controller.

7. The air spring support system charging and exhausting control device according to any one of claims 1 or 2, characterized in that: the main air supply line is provided with a ball valve for controlling charging and exhausting, a main air supply line, a gas filling solenoid valve and an exhaust gas. The solenoid valves are respectively connected with a pressure gauge, and the exhaust solenoid valve is connected to a muffler.

8. The air spring support system charging and exhausting control device according to claim 7, wherein the main air supply line is connected to an air compressor, and the first oil water filter is sequentially connected between the main air supply line and the air compressor. , gas storage tank, second oil filter and pressure reducing valve.