JP2008239043A - Method and device for controlling inclination of vehicle body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the consumption flow of air required for inclining a vehicle body. <P>SOLUTION: This device controls inclination of the vehicle body 1 by supplying/exhausting air to/from four air spring arranged on the right and left of a truck 2 arranged longitudinally in the forward traveling direction of the vehicle body 1. The air springs are formed in an inline two-stage of the height controlling air springs 21a, 21b and the inclination controlling air springs 22a, 22b. The inclination controlling air springs 22a, 22b and an air source 4 are connected to each other by one pipe 9a, the height controlling air springs 21a, 21b and the air source 4 are connected to each other by the other pipe 9a, and the height controlling air springs 21a, 21b arranged to the right and left on the truck 2 are connected to each other by a communicating pipe 14 through auxiliary air chambers 11a, 11b. An air supply valve 5 and an exhaust valve 6 are arranged in the middle of the one pipe 9a, a height regulating valve 8 is arranged in the middle of the other pipe 9b, and a differential pressure valve 12 is arranged in the communicating pipe 14. When traveling on a curve, the vehicle body 1 is inclined by supplying/exhausting the air to/from only the inclination controlling air springs. Therefore, the air source and an air supply device can be reduced to a small capacity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle body tilt control method using an air spring, particularly when passing a curve, and to a tilt control device that implements the tilt control method.

  In a railway vehicle, riding comfort may deteriorate due to excessive centrifugal force when passing a curve. In particular, when the traveling speed at the time of passing through the curve is high, the excess centrifugal force increases to cause further deterioration in riding comfort. Therefore, various types of vehicle body tilt control have been developed to suppress excessive centrifugal force and prevent deterioration of riding comfort by tilting the vehicle body when passing a curve.

  FIG. 8 is a view showing an example of a vehicle body tilt control device using an air spring. This vehicle body tilt control device is a device that includes left and right air springs 3 a and 3 b disposed between the vehicle body 1 and the carriage 2 and an air source 4. The two lines 9a and 9b are connected to each other.

  An air supply valve 5 and an exhaust valve 6 for supplying and exhausting air to and from the air springs 3a and 3b based on the detection value of the height sensor 10 are installed in the middle of one of the pipes 9a. A height adjusting valve 8 for adjusting the height of the air springs 3a, 3b is installed in the middle of the other pipe 9b, and a shutoff valve 7 is provided between the height adjusting valve 8 and the air springs 3a, 3b. Is installed. The two air springs 3a and 3b communicate with each other through the communication pipe 13 via the auxiliary air chambers 11a and 11b, and a differential pressure valve 12 is provided between the auxiliary air chambers 11a and 11b.

In this vehicle body tilt control device, the shutoff valve 7 is in a closed state when the vehicle is inclining, and air is supplied to the left and right air springs 3a and 3b of the carriage 2 disposed in the forward and backward direction of the vehicle in the closed state. The vehicle body 1 was tilted by supplying and exhausting air.
JP 7-81558 A

  However, in the above-described conventional vehicle body tilt control, it is necessary to supply and exhaust all air springs and auxiliary air chambers when the vehicle body is tilted. Therefore, the air consumption flow rate required for the vehicle body tilt increases, and the air source and the air supply device A large capacity was required.

  The problem to be solved by the present invention is that when the vehicle body tilts using a conventional air spring, the air consumption flow required for the vehicle body tilt increases, so that a large capacity air source or air supply device is required. This is the point.

  The present invention employs the following configuration in order to reduce the consumption flow rate of air, particularly in the case of vehicle body tilt control using an air spring when passing through a curve.

That is, the vehicle body tilt control method of the present invention is
A vehicle body inclination control method for performing vehicle body inclination control when passing through a curve by supplying and exhausting air to four air springs provided on the left and right sides of a carriage arranged in front and rear of the vehicle body in the traveling direction,
The air spring has a two-stage configuration in which an air spring for height control and an air spring for tilt control are connected in series, and the air spring for tilt control is configured not to communicate with an auxiliary air spring,
When running on a curve, the main feature is that the vehicle body is tilted by supplying / exhausting air to only the tilt control air spring among the two-stage air springs in series.

The vehicle body tilt control device of the present invention for carrying out the above-described method of the present invention comprises:
A vehicle body tilt control device that controls the tilt of a vehicle body when passing a curve by supplying and exhausting air to four air springs respectively provided on the left and right sides of a carriage disposed in the front and rear of the traveling direction of the vehicle body,
The air spring has a two-stage configuration in which an air spring for height control and an air spring for inclination control are connected in series, and one of the air springs between the air spring for inclination control and the air source is connected with one pipe. Between the control air spring and the air source with the other pipe, and between the height control air springs provided on the left and right of the carriage with a communication pipe via each auxiliary air chamber,
An air supply valve and an exhaust valve are provided in the middle of the one pipe, a height adjustment valve for adjusting the height of the height control air spring is provided in the middle of the other pipe, and a differential pressure valve is provided in the communication pipe. Provided,
When running on a curve, the main feature is that the vehicle body is tilted by supplying and exhausting only the air spring for tilt control.

  In the present invention, the air spring is configured in two stages for height control and inclination control, and the air spring for height control is not provided with an auxiliary air chamber. Decrease. Therefore, the capacity of the air source and the air supply device can be reduced.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS.
FIGS. 1A and 1B are diagrams for explaining a first example of the present invention. FIG. 1A is a diagram for explaining straight running, FIG. 1B is a diagram for explaining curved running, and FIGS. It is a figure explaining the example of.

  In FIG. 1, reference numeral 1 denotes a vehicle body, and 2 denotes a carriage disposed before and after the traveling direction of the vehicle body 1, and an air spring is arranged between the vehicle body 1 on the left and right sides of the carriage 2, The height control and tilt control of the vehicle body 1 are performed by supply and exhaust.

  In the present invention, the air spring has a two-stage configuration in which the inclination control air springs 22a and 22b are provided in series on the height control air springs 21a and 21b, and is used for height control and inclination control. Are distinguished. In this case, the combined air capacity of the auxiliary air chambers of the height control air springs 21a and 21b is approximately the same as that of the conventional air spring. On the other hand, since the air springs 22a and 22b for tilt control have an air spring area that supports the weight of the vehicle body with air pressure and may be an air spring that allows vertical displacement, the auxiliary air chamber is It is unnecessary. Accordingly, the capacity of the air spring can be reduced, and the air consumption flow rate during tilting can be reduced.

  Thus, with the distinction of the air springs used for height control and inclination control, the piping configuration from the air source 4 to the height control air springs 21a and 21b and the inclination control air springs 22a and 22b is shown in FIG. The conventional piping configuration described in FIG. 8 is changed as follows.

  That is, in the present invention, the inclination control air springs 22a, 22b and the air source 4 are connected by one pipe 9a, and the height control air springs 21a, 21b and the air source 4 are connected by the other pipe 9b. ing. An air supply valve 5 and an exhaust valve 6 are installed in the middle of the one pipe 9a, and a height adjustment valve 8 is installed in the middle of the other pipe 9b.

  The height control air springs 21a and 21b provided on the left and right sides of the carriage 2 may have the same configuration as the conventional one. In the example of FIG. 1, similarly to FIG. 8, a connection pipe 13 is connected via the auxiliary air chambers 11 a and 11 b, and a differential pressure valve 12 is provided in the communication pipe 13.

  In the vehicle body tilt control device of the present invention shown in FIG. 1, the height control during straight running and the tilt control during curved running are performed as follows.

  First, during straight running, the height control air springs 21a and 21b and the auxiliary air chamber 11a are passed through the other piping 9b and the height adjusting valve 8 so as to maintain the horizontal state shown in FIG. , 11b is supplied and exhausted to control the height of the vehicle body 1. During this straight running, air supply / exhaust to the air springs 22a, 22b for inclination control is not performed.

  On the other hand, at the start of curve running, the vehicle body 1 is tilted by supplying and exhausting air to the inclination control air springs 22a and 22b through the air supply valve 5 and the exhaust valve 6 through one pipe 9a. When the vehicle body is tilted, the shutoff valve 7 is shut off, and supply / exhaust to the height control air springs 21a, 21b is not performed. This is the tilt control method of the present invention. At the end of curve running, the inclination control air springs 22a and 22b are returned to the normal horizontal position via the air supply valve 5 and the exhaust valve 6.

  In addition, when tilt control is performed during curve traveling, supply to the air springs on only the left and right sides by a method of supplying only the air spring 22b for inclination on the outer gauge side or a method of exhausting only the air spring 22a for inclination on the inner gauge side. Inclination by exhaust may be performed.

  In the case of the present invention, the air required for the inclination control is not the air supply to the air spring and the auxiliary air chamber as in the conventional case, but only the supply / exhaust to the inclination control air springs 22a and 22b having a small capacity. Good, so less air consumption.

  The present invention is not limited to the example shown in FIG. 1, and also in the case of the examples shown in FIGS. 2 to 7, the same effect can be obtained by performing the same tilt control.

  2 is opposite to FIG. 1 in that the air springs 21a and 21b for height control are provided in series on the air springs 22a and 22b for inclination control, and FIGS. 3 and 7 show the height control of FIG. Inclined beams 23 are disposed between the air springs 21a and 21b and the air springs 22a and 22b for tilt control.

  Further, the height adjusting valve 8 is not limited to the one installed in the vehicle body 1 as shown in FIGS. 1 to 3, but is installed in the height control air springs 21a and 21b as shown in FIGS. As shown in FIG. 7, it may be installed on the inclined beam 23. In this case, it is not necessary to provide the cutoff valve 7. That is, it may not be installed on the vehicle body 1 as long as the height of the height control air springs 21a and 21b can be measured.

  Further, as shown in FIGS. 1 to 4, the height sensor 10 does not detect the height of the vehicle body 1 with the carriage 2 as a reference, but uses the control air springs 21a and 21b as a reference as shown in FIG. Alternatively, as shown in FIG. 7, the height of the vehicle body 1 may be detected based on the inclined beam 23.

  However, in the example of FIG. 5, it is necessary to supply and exhaust air to the inclination control air springs 22a and 22b and keep the height of the inclination control air springs 22a and 22b constant even during straight running.

  On the other hand, as shown in FIGS. 6 and 7, one height adjusting valve 24 may be installed at the center of the left and right air springs to set the neutral height of the inclination control air springs 22a and 22b. . In this case, it is necessary to supply and exhaust air to the inclination control air springs 22a and 22b from the air supply valve 5 and the exhaust valve 6 so that the right and left inclination control air springs 22a and 22b have the same height during straight running. There is no.

  In the tilt control, when the heights of the left and right tilt control air springs 22a and 22b are not controlled so as to be raised and lowered by the same height on the ascending side and the descending side, the height adjusting valve 24 and the tilt controlling air spring 22b are used. Needless to say, the shutoff valve 7 is installed between the air springs 22a and 22b and shut off.

  Note that the inclination control of the present invention during curve traveling is performed by outputting a control signal from the controller to each valve such as the supply valve 5 and the exhaust valve 6 based on a signal from a curve detection device (not shown). Needless to say. This curved line detection device detects what is detected from a signal from a ground element and a speed sensor that are generally used, what is detected from a signal from an acceleration sensor or gyro sensor and a signal from a speed sensor, etc. use.

The present invention is not limited to the above examples, and can be freely changed within the scope of the technical idea described in each claim.
For example, in the vehicle body tilt control device of the present invention, a differential pressure cutoff valve may be provided, and the height sensor 10 may be one integrated with the height adjustment valve 8.

  The present invention can reduce the consumption flow rate of air required when the vehicle body is tilted. Therefore, the capacity of the air source and the air supply mechanism can be reduced, and the present invention can be applied to applications that require downsizing of a railway vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the 1st example of this invention, (a) is at the time of straight running, (b) is a figure explaining at the time of curving. It is a figure explaining the 2nd example of this invention. It is a figure explaining the 3rd example of this invention. It is a figure explaining the 4th example of this invention. It is a figure explaining the 5th example of this invention. It is a figure explaining the 6th example of this invention. It is a figure explaining the 7th example of this invention. It is a block diagram which shows an example of the conventional vehicle body tilt control apparatus, (a) is at the time of straight running, (b) is a figure explaining the time of curving.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Bogie 4 Air source 5 Air supply valve 6 Exhaust valve 8,25 Height adjustment valve 9a, 9b Piping 10 Height sensor 11a, 11b Auxiliary air chamber 12 Differential pressure valve 13 Communication pipe 21a, 21b Height control air spring 22a, 22b Inclination control air spring 23 Inclined beam

Claims (2)

A vehicle body inclination control method for performing vehicle body inclination control when passing through a curve by supplying and exhausting air to four air springs provided on the left and right sides of a carriage arranged in front and rear of the vehicle body in the traveling direction,
The air spring has a two-stage configuration in which an air spring for height control and an air spring for tilt control are connected in series, and the air spring for tilt control is configured not to communicate with an auxiliary air spring,
A vehicle body tilt control method characterized in that, when traveling on a curve, the vehicle body is tilted by supplying / exhausting air to only the air spring for tilt control among the air springs of the two-stage configuration in series. A vehicle body tilt control device that controls the tilt of a vehicle body when passing a curve by supplying and exhausting air to four air springs respectively provided at two left and right positions of a carriage arranged in the front and rear direction of the vehicle body,
The air spring has a two-stage configuration in which an air spring for height control and an air spring for tilt control are connected in series, and one of the air springs between the air spring for tilt control and the air source of these air springs, Between the control air spring and the air source with the other pipe, and between the height control air springs provided on the left and right of the carriage with a communication pipe via each auxiliary air chamber,
An air supply valve and an exhaust valve are provided in the middle of the one pipe, a height adjusting valve for adjusting the height of the height control air spring is provided in the middle of the other pipe, and a differential pressure valve is provided in the communication pipe. Provided,
A vehicle body tilt control device characterized in that the vehicle body is tilted by supplying / exhausting air only to the air spring for tilt control during curve traveling.

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