JPH06270805A - Fail-safe method of vehicle body inclination control of rolling stock - Google Patents

Abstract

PURPOSE:To secure safety against turnover while the same comfortableness as that of a rolling stock that which no car body inclination control is applied, is being maintained, by putting changeover valves, air feed valves and exhaust valves into a nonvoltage state respectively, regulating the height of pneumatic springs by means of height regulating valves, at the time of vehicle body inclination control failure. CONSTITUTION:As for a rolling stock, right and left pneumatic springs 3 are interposed between a vehicle body 1 and a truck 2, and so the inclination of the vehicle body 1 is controlled. The pneumatic springs 3 and a pneumatic source 5 are connected to each other by means of a pneumatic pipe passage 9 equipped with height regulating valves 4. Also, between each height regulating valve 4 and each pneumatic spring 3, each changeover valve 10 to be opened/closed by means of electricity is provided. In addition, at a pneumatic pipe passage 8 for connecting the pneumatic source 5 to the pneumatic springs 3, air feed valves 6 and exhaust valves 7 to be opened/closed by means of electricity are provided respectively. In this instance, constitution is such that the changeover valves 10 are opened at the time of nonvoltage, and the air feed valves 6 and exhaust valves 7 are respectively closed at the time of nonvoltage. At the time of nonvoltage caused by the abnormality of a control system, the vehicle body 1 is restored to a horizontal posture by operating the height regulating valves 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fail-safe method for controlling the inclination of a vehicle body by an air spring of a railway vehicle.

[0002]

2. Description of the Related Art A railroad vehicle passing through a curved road, unless it travels at a speed commensurate with the cant amount, causes lateral acceleration to act on passengers to make the ride uncomfortable. In order to improve the riding comfort on a curved road, the vehicle body may be tilted so as to cancel out the lateral acceleration. As the body tilting method,
There are several methods, among which the apparatus shown in FIG. 3 as a method using an air spring, and JP-A-58-110368.
There is an apparatus disclosed in the publication and shown in FIG.

In the apparatus shown in FIG. 3, a switching valve 13 is provided in the middle of an air pipe 12 connecting the left and right air springs 3 and an air source 5, and the switching valve 13 of the extension side air spring is opened to send compressed air. When the valve is turned on, the switching valve 13 of the compression side air spring is switched so as to be opened to the atmosphere, the compressed air is discharged into the atmosphere, and the vehicle body is tilted.

In the device shown in FIG. 4, the left and right air chambers 15 of the double-acting pneumatic cylinder 14 and the air spring 3 are connected by air pipes 19, respectively, and the left and right sides between the vehicle body 1 and the bogie 2 are connected. A piston 20 is moved left and right through a drive device 18 including a motor, a rack, and a pinion operated by a control signal obtained by arithmetically processing a detection signal from a height detector 16 provided in One of the springs is extended and at the same time the other is compressed to tilt the vehicle body.

[0005]

The above-mentioned conventional vehicle body inclination control using the air spring changes the air spring height by controlling the air supply valve, the exhaust valve or the cylinder of the air spring with an electrical signal to incline the vehicle body. Let Therefore, when an abnormality occurs in the control device etc., the control is stopped and the vehicle body remains tilted, or air supply and exhaust are continuously performed and the state between the dolly and the vehicle body remains in the stopper contact state. Become. In such a state, not only is the riding comfort uncomfortable, but also the safety of the vehicle overturning is reduced.

The present invention solves the problems found in the above-described conventional vehicle body tilt control by means of an air spring, and even when the vehicle body tilt control device is stopped due to an abnormality or the like, the same degree as in the conventional vehicle body tilt control is not achieved. The present invention provides a fail-safe method of vehicle body tilt control that can provide a comfortable ride and can also ensure safety against overturning.

[0007]

In order to achieve the above object, a fail-safe method for controlling the inclination of a vehicle body of a railway vehicle according to the present invention includes a height adjusting valve for mechanically adjusting the height of an air spring of a bogie of a railway vehicle. A switching valve that is electrically opened and closed is provided in an air pipeline that connects the height adjustment valve and the air spring.
In addition to this, in a mechanism equipped with a vehicle body inclination control device that is provided with an air supply valve and an exhaust valve that are electrically opened and closed in an air pipeline that connects an air source and an air spring, the switching valve opens when there is no voltage. The air supply valve and the exhaust valve are configured to close when there is no voltage, and when the vehicle body tilt control fails, the voltage to each valve is made non-voltage, and the height adjustment valve adjusts the height of the air spring. And

Further, a height adjusting valve for mechanically adjusting the height of an air spring of a bogie of a railway vehicle, and a supply air which is separately opened and closed electrically in an air pipeline connecting an air source and the air spring. A vehicle body inclination control device provided with a valve and an exhaust valve, wherein the height adjustment valve and the air supply valve and the exhaust valve are connected to an air spring through a three-way valve that electrically opens and closes It is configured so that the height adjustment valve and the air spring communicate with each other when there is no voltage, and when the vehicle body tilt control fails, the voltage to the three-way valve is made non-voltage, and the height of the air spring is adjusted by the height adjustment valve. And

[0009]

According to the invention of claim 1, the switching valve is opened when no voltage is applied, and the voltage is constantly applied while the vehicle body tilt control is being performed by the vehicle body tilt control device, and the switching valve is closed. It is in. Therefore, the height adjustment valve does not operate as long as the vehicle body tilt control is normally performed.

Further, in the invention of claim 2, the three-way valve is opened so that the height adjusting valve and the air spring communicate with each other when no voltage is applied, and the voltage is constantly applied while the vehicle body inclination control is being performed by the vehicle body inclination control device. Is pressurized, and the three-way valve is closed between the height adjustment valve and the air spring. Therefore, the height adjustment valve does not operate as long as the vehicle body tilt control is normally performed.

When an abnormality occurs in the vehicle body leaning control device while leaning the vehicle body, the voltage of the switching valve or the three-way valve, the air supply valve, and the exhaust valve becomes zero. Then, the switching valve is opened, the three-way valve is opened so that the height adjusting valve and the air spring communicate with each other, and at the same time, the air supply valve and the exhaust valve are closed. Here, the height adjusting valve is actuated, and the leaning vehicle body is restored to a posture substantially parallel to the bogie, and the posture can be maintained to the same extent as that of a conventional vehicle in which the vehicle body leaning control is not performed.

Therefore, there is no puncture of the air spring or hitting of the upper and lower stoppers due to abnormal air supply or exhaust, and the ride comfort when the vehicle body tilt control device is abnormal can be secured to the same level as that of the conventional vehicle. In addition, safety against capsizing can be secured.

[0013]

【Example】

Embodiment 1 An embodiment of the invention described in claim 1 will be described with reference to FIG. The air source 5 and the left and right air springs 3 are connected by an air pipe 9 having a height adjusting valve 4 for mechanically adjusting the height of the air spring, and the height adjusting valve 4 and the air spring 3 are connected. A switching valve 10 that is electrically opened and closed is provided in the air pipeline, and separately from this, an air supply valve 6 and an exhaust valve that are electrically opened and closed in an air pipeline 8 that connects the air source 5 and the air spring 3. In the mechanism provided with the vehicle body leaning control device provided with 7, the switching valve 10 is configured to open when there is no voltage, and the air supply valve 6 and the exhaust valve 7 are configured to close when there is no voltage.

When the vehicle body leaning control device has an abnormality during leaning of the vehicle body, the switching valve 10, the air supply valve 6 and the exhaust valve 7 have no voltage. Then, the switching valve 10 is opened and at the same time, the air supply valve 6 and the exhaust valve 7 are closed. Here, the height adjusting valve 4 is actuated, and the leaning vehicle body is restored to a posture substantially parallel to the bogie, and the posture is maintained to the same extent as the conventional vehicle in which the vehicle body leaning control is not performed.

Embodiment 2 An embodiment of the invention described in claim 2 will be described with reference to FIG. The air source 5 and the left and right air springs 3 are connected by an air pipeline 9 having a height adjusting valve 4 for mechanically adjusting the height of the air springs, and separately, between the air source 5 and the air springs 3. A vehicle body inclination control device is provided in which an air supply valve 6 and an exhaust valve 7 that are electrically opened and closed are provided in an air conduit 8 that connects the height adjustment valve 4, the air supply valve 6 and the exhaust valve 7. In the mechanism connected to the air spring via the three-way valve 11 that opens and closes at, the three-way valve is configured so that the height adjusting valve 4 and the air spring 3 communicate with each other when no voltage is applied.

When the vehicle body leaning control device has an abnormality during leaning of the vehicle body, the switching valve 10, the air supply valve 6 and the exhaust valve 7 have no voltage. Then, the three-way valve 11 opens so that the height adjusting valve 4 and the air spring 3 communicate with each other, and at the same time, the air supply valve 6 and the exhaust valve 7 are closed. Here, the height adjusting valve 4 is actuated, and the leaning vehicle body is restored to a posture substantially parallel to the bogie 2, and the posture can be maintained to the same extent as a conventional vehicle in which the vehicle body leaning control is not performed.

[0017]

According to the fail-safe method of vehicle body leaning control of the present invention, even when the vehicle body leaning control device is stopped due to an abnormality or the like, the ride comfort comparable to that of the conventional vehicle without the vehicle body leaning control can be obtained. Moreover, the safety against overturning can be secured.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the invention described in claim 1.

FIG. 2 is an explanatory diagram showing an embodiment of the invention described in claim 2;

FIG. 3 is an explanatory diagram showing an example of a conventional vehicle body inclination control method using an air spring.

FIG. 4 is an explanatory diagram showing another example of a conventional vehicle body inclination control method using an air spring.

[Explanation of symbols]

 1 vehicle body 2 bogie 3 air spring 4 height adjusting valve 5 air source 6 air supply valve 7 exhaust valve 8 air pipe 9 air pipe 10 switching valve 11 three-way valve 12 air pipe 13 switching valve 14 pneumatic cylinder 15 air chamber 16 Height detector 17 Controller 18 Drive device 19 Air line 20 Piston

Claims (2)

[Claims] 1. A switch having a height adjusting valve for mechanically adjusting the height of an air spring of a railcar bogie, and electrically switching on and off in an air pipeline connecting the height adjusting valve and the air spring. In the mechanism provided with a vehicle body inclination control device that is provided with a valve, and separately from this, an air supply valve and an exhaust valve that are electrically opened and closed in an air pipeline connecting an air source and an air spring. It is configured to open when there is no voltage and to close the intake valve and exhaust valve when there is no voltage. When the vehicle body tilt control fails, the voltage to each valve is set to no voltage, and the height adjustment valve adjusts the air spring height. A fail-safe method for controlling the inclination of a vehicle body of a railway vehicle. 2. A height adjusting valve for mechanically adjusting the height of an air spring of a bogie of a railway vehicle, and a supply air which is separately opened and closed electrically in an air pipeline connecting an air source and the air spring. A vehicle body inclination control device provided with a valve and an exhaust valve, wherein the height adjustment valve and the air supply valve and the exhaust valve are connected to an air spring through a three-way valve that electrically opens and closes It is configured so that the height adjustment valve and the air spring communicate with each other when there is no voltage, and when the vehicle body tilt control fails, the voltage to the three-way valve is made non-voltage, and the height of the air spring is adjusted by the height adjustment valve. Fail-safe method for body tilt control of railway vehicles.