JPH05254430A - Vehicle body leaning device of railway vehicle provided with air spring - Google Patents

Abstract

PURPOSE:To lean the vehicle body of a railway vehicle provided with an air spring by separately adjusting height of left and right air springs. CONSTITUTION:In a device wherein air springs 3a, 3b on left and right sides and the air chambers 5a, 5b of a double acting type pneumatic cylinder 4 provided on a truck 2 are respectively connected together by means of pipings 22a, 22b, a driving unit 10 is provided to its piston rod 9, and that performs vehicle body inclination by operation of the pneumatic cylinder, respective air chambers 7a, 7b of a pair of auxiliary pneumatic cylinders provided on the truck 2 are connected to air chambers 5a, 5b of the pneumatic cylinder by means of pipings 23a, 23b. Thus, the device is such a carbody leaning device of a railway vehicle in which driving units 15a, 15b are provided to piston rods 14 and air springs constructed in such a way as to separately operate respective driving units of the pneumatic cylinder 4 and auxiliary pneumatic cylinders 6a, 6b by a control signal from a controller 19. Thereby this device separately adjusts the height of left and right air springs and can perform vehicle body inclination without consuming compressed air of air springs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body tilting device capable of tilting a vehicle body by individually operating left and right air springs of a railroad vehicle equipped with an air spring.

[0002]

2. Description of the Related Art A railroad track is constructed by using straight and curved lines, a relaxation curve connecting the two, and a slope portion according to the terrain. On that curved road, a centrifugal force causes a force to fall to the outside when the train passes, so to prevent this, the outer rail of the curved road is laid higher than the inside and a so-called cant is attached in advance. .

A railroad vehicle passing through a curved road, unless it travels at a speed commensurate with its cant amount, causes lateral acceleration to act on passengers and makes the passengers uncomfortable to ride. 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. There are several methods for leaning the vehicle body. Among them, as a method using an air spring, the apparatus shown in FIG. 6 and JP-A-58-11036 are used.
There is an apparatus disclosed in Japanese Patent Publication No. 8 and shown in FIG.

The device shown in FIG. 6 has the left and right air springs 3a,
The switching valves 31a and 31b are provided in the middle of the pipes 32a and 32b connecting the 3b and the air source 30, and the switching valve on the air spring side to be extended is opened to send compressed air.
The switching valve on the side of the air spring to be compressed is released into the atmosphere so that the switching valve is released into the atmosphere, and the vehicle body is tilted.

In the apparatus shown in FIG. 7, the left and right air chambers 5a and 5b of the double-acting pneumatic cylinder 4 and the air springs 3a and 3b are connected by pipes 22a and 22b, respectively, and the body 1 and the bogie 2 are connected. The motor 12 and the rack 11 operated by the control signals obtained by inputting the detection signals from the height detectors 18 provided on the left and right sides between them to the controller 19 and performing arithmetic processing in the controller 19.
The piston 8 is moved to the left and right via the drive device 10 including the a and the pinion 11b, and one of the air springs is extended and at the same time the other is compressed to tilt the vehicle body.

[0006]

In the former device shown in FIG. 6, the left and right air spring heights can be adjusted individually by operating the switching valves 31a and 31b individually on the left and right sides. Since it is released inside and operation is performed,
Large amount of compressed air is uneconomical.

The latter device shown in FIG. 7 does not consume compressed air, and the operating force of the piston 8 tilts with a small force that overcomes the differential pressure between the air chambers 5a and 5b. However, the left and right air spring heights cannot be adjusted individually. In other words, the vehicle body can only tilt so that the height of the left and right air springs is approximately equal to the amount of compression = the amount of extension, so that the vertical stroke of the air spring requires the same amount of compression and extension. Such an air spring has a high mounting reference height, which causes a problem of a mounting space and a large sinking of the vehicle body at the time of maximum compression, which causes the underfloor equipment to be out of the vehicle limit.

An object of the present invention is to eliminate the drawbacks found in the above-described conventional air spring body tilting device, in which the vehicle body is tilted by one double-acting pneumatic cylinder and the left and right air springs are used. It provides a device that can be operated individually.

[0009]

In order to achieve the above object, the present invention is directed to the left and right air springs 3a and 3b of a rail vehicle with an air spring and the left and right air of a double-acting pneumatic cylinder provided on a bogie. An air chamber 7a of each of a pair of auxiliary pneumatic cylinders provided on a carriage in a device that connects the chambers 5a and 5b with a pipe, provides a drive device on a piston rod of the pneumatic cylinder, and tilts the vehicle body by operating the cylinder. , 7b to the air chamber 5 of the pneumatic cylinder
a, 5b are connected by piping, a piston rod is provided with a drive device, and each drive device of the pneumatic cylinder and the pair of auxiliary pneumatic cylinders is operated individually by a control signal from the controller, or When an auxiliary piston having a drive device is provided on the piston rod so as to face the main piston of the pneumatic cylinder and the above drive devices are individually operated by a control signal from the controller, and the vehicle body is tilted toward the air spring 3a side. Indicates that when the main piston moves to the air spring 3b side and the air spring 3a compresses to the limit, the auxiliary piston moves following the main piston at approximately the same speed, and when the vehicle body is tilted to the air spring 3b side, Spring 3
The main piston is stopped when b is compressed to the limit,
A body tilting device for a railway vehicle with an air spring, in which the auxiliary piston is configured to move to the air spring 3b side, and the left and right air spring heights can be individually adjusted.

[0010]

The tilting of the vehicle body is performed mainly by the lateral movement of the piston 8. In this case, the expansion and contraction amounts Ha and Hb of the left and right air springs
Is inclined so that Ha becomes approximately Ha = Hb. Further, when the auxiliary pneumatic cylinder is operated, that is, when the stroke on the compression side is smaller than the stroke on the extension side, for example, in FIG. 2, the inclination is Ha <Hb.

In a device in which a pair of auxiliary pneumatic cylinders are attached to a double-acting pneumatic cylinder, first, when the piston 8 of the pneumatic cylinder is moved to compress the height of the air spring on the compression side to the limit, the movement of the piston 8 is performed. Then, the auxiliary pneumatic cylinder communicating with the air spring on the extension side is moved in the direction in which the air chamber becomes narrower, and the air spring is further extended.
The compression amount and the extension amount of the air spring at this time are determined by the control signals obtained by comparing the height control signal input in advance and the detection signal input from the height detector by the controller, and the drive devices 10 and 15a, 15b. Can be determined by operating.

Further, in the device in which the auxiliary piston 24 is provided so as to face the main piston 8a of the double-acting pneumatic cylinder, when the right air spring 3b is extended, as shown in FIG. 8a is moved to the right and the compression amount of the air spring 3a on the left side approaches the limit, the auxiliary piston 2
4 is moved to follow the right at substantially the same speed as the main piston 8a. As a result, the left air spring 3a stops compressing and the right air spring 3b continues to expand. On the contrary, when extending the left air spring 3a, as shown in FIG. 5, first, the main piston 8a is moved to the left, and when the compression amount of the right air spring 3b approaches the limit, the movement of the main piston 8a is stopped. , Move the auxiliary piston 24 to the right. Therefore, the air spring 3 on the right side
b stops compression and the left air spring 3a continues to expand.

As described above, the left and right air springs can be individually expanded and contracted by coordinating the movement of the piston of the double-acting pneumatic cylinder and the movement of the auxiliary piston of the auxiliary pneumatic cylinder, and the air spring on the compression side can be expanded and contracted. It is possible to further extend the air spring on the extension side while maintaining the pressure limit at the compression limit.

[0014]

【Example】

Embodiment 1 The invention of claim 1 will be described based on an embodiment shown in FIGS. A pipe 22 is provided between the air springs 3a and 3b provided on the left and right sides between the vehicle body 1 and the bogie 2 and the air chambers 5a and 5b on the left and right sides of the double-acting pneumatic cylinder 4 provided on the bogie 2.
a and 22b connect each other. A pipe 23a is provided between the air chambers 7a and 7b of the pair of auxiliary pneumatic cylinders 6a and 6b provided near the pneumatic cylinder 4 and the air chambers 5a and 5b of the pneumatic cylinder 4, respectively.
23b to connect.

A drive device 10 is provided on the piston rod 9 of the piston 8 of the pneumatic cylinder 4. This drive 1
0 is formed by engaging a rack 11a provided on the piston rod 9 with a pinion 11b provided on the rotation shaft of the motor 12. Similarly, the rack 16a provided on the piston rods 14 of the pistons 13a and 13b of the auxiliary pneumatic cylinders 6a and 6b is attached to the pinion 16b provided on the rotation shaft of the motor 17.
Drive devices 15a and 15b that are engaged with each other are provided.

Each of the driving devices 10, 15a and 15b is provided with a controller 1 via switches 20, 21a and 21b.
9 electrically connected. The controller 19 receives a detection signal from a height detector 18 provided on the left and right sides between the vehicle body 1 and the trolley 2 and a height control signal from a different system. By opening and closing each switch, each drive device is configured to rotate in either forward or reverse directions.

When the vehicle body needs to be tilted, the drive device 10 is first actuated by the control signal from the controller 19 via the switch 20. For example, in FIG. 2, the piston 8 moves to the left and the air on the left side moves. When the spring 3a approaches the compression limit, the piston 13 of the left auxiliary pneumatic cylinder 6a
Move a to the right to maintain compression limit. Then, when the right air spring 3b is further extended, the piston 13b of the right auxiliary pneumatic cylinder 6b is moved to the left.

Embodiment 2 The invention of claim 2 will be described based on an embodiment shown in FIGS. The difference from the first embodiment is that a pair of auxiliary pneumatic cylinders are omitted, and instead, an auxiliary piston 24 is provided facing the main piston 8a of the double-acting pneumatic cylinder 4. That is, a drive device in which an auxiliary piston 24 is provided on the air chamber 5a side of the pneumatic cylinder 4 having the same configuration as in FIG. 1, and a rack 27a provided on the piston rod 25 of the auxiliary piston 24 and a pinion 27b provided on a rotation shaft of a motor 29 are meshed with each other. Two
6 is provided and is electrically connected to the controller 19 via the switch 28.

A case where the vehicle body is tilted to the left by this device will be described with reference to FIG. First, the drive device 10 is operated to move the main piston 8a to the right to compress the air spring 3a, the air spring 3b is extended to incline the vehicle body, and the drive device 26 is driven when the compression amount of the air spring 3a approaches the limit. Is operated to move the auxiliary piston 24 to the right at substantially the same speed as the main piston 8a, and the left air spring 3b continues to expand while maintaining the compression limit of the air spring 3a.

On the contrary, the case where the vehicle body is inclined to the right will be described with reference to FIG. First, the drive device 10 is operated to move the main piston 8a to the left to extend the air spring 3a, compress the air spring 3b to tilt the vehicle body, and when the compression amount of the air spring 3b approaches the limit, the main piston 8a Stop motion, actuate drive 26 to move auxiliary piston 24 to the right,
The extension of the air spring 3a is continued.

[0021]

According to the present invention, when leaning the vehicle body of a railroad vehicle with an air spring to the left and right, the height of the left and right air springs is individually adjusted and leaned without consuming compressed air of the air spring. be able to. In addition, since the compression amount of the air springs can be reduced and the expansion amount can be increased by tilting the vehicle body in which the compression amount of the left and right air springs is not equal to the expansion amount, it is possible to prevent the underfloor equipment of the vehicle from deviating from the vehicle limit. . Further, since it is not necessary to increase the mounting height of the air spring, the space for mounting the air spring can be saved.

[Brief description of drawings]

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

FIG. 2 is an operation explanatory view when the vehicle body is tilted to the left by the device of FIG.

FIG. 3 is an explanatory diagram showing an embodiment of the invention of claim 2;

FIG. 4 is an explanatory diagram of an operation when the vehicle body is tilted to the left by the device of FIG.

5 is an operation explanatory view when the vehicle body is tilted to the right by the device of FIG.

FIG. 6 is an explanatory view showing an example of a conventional vehicle body tilting device for a railway vehicle.

FIG. 7 is an explanatory diagram showing another example of a conventional vehicle body tilting device for a railway vehicle.

[Explanation of reference numerals] 1 vehicle body 2 truck 3a, 3b air spring 4 pneumatic cylinder 5a, 5b air chamber 6a, 6b auxiliary pneumatic cylinder 7a, 7b air chamber 8 piston 8a main piston 9 piston rod 10 drive device 11a rack 11b pinion 12 motor 13a, 13b Piston 14 Piston rod 15a, 15b Drive device 16a Rack 16b Pinion 17 Motor 18 Height detector 19 Controller 20 Switch 21a, 21b Switch 22a, 22b, 23a, 23b Piping 24 Piston 25 Piston rod 26 Drive device 27a Rack 27b Pinion 28 Switch 29 Motor 30 Air source 31a, 31b Switching valve 32a, 32b Piping

Claims (2)

[Claims] 1. A left and right air springs 3a, 3b of a railcar equipped with an air spring and a left and right air chambers 5a, 5b of a double-acting pneumatic cylinder provided on a bogie are connected by pipes, respectively. In the device in which the piston rod is provided with a drive device and the cylinder is actuated to incline the vehicle body, the air chambers 7a and 7b of the pair of auxiliary pneumatic cylinders provided in the carriage are replaced by the air chambers 5 of the pneumatic cylinders.
a and 5b are connected by piping, a drive device is provided on the piston rod, and each drive device of the pneumatic cylinder and the pair of auxiliary pneumatic cylinders is individually operated by a control signal from the controller. A body tilting device for a railway vehicle equipped with an air spring, characterized in that the height can be adjusted individually. 2. The air springs 3a, 3b on the left and right sides of a railway vehicle with an air spring and the air chambers 5a, 5b on the left and right sides of a double-acting pneumatic cylinder provided on a bogie are connected by pipes, respectively. In the device for inclining the vehicle body by operating the cylinder of the piston rod, the auxiliary piston having the drive device on the piston rod is provided so as to face the main piston of the pneumatic cylinder, and the auxiliary signal is output by the control signal from the controller. When each drive device is provided to operate individually, and when the vehicle body is tilted toward the air spring 3a side, the main piston moves to the air spring 3b side, and when the air spring 3a is compressed to the limit, the auxiliary piston is almost the same. When following the main piston at a speed and tilting the vehicle body toward the air spring 3b side, the main piston is stopped when the air spring 3b is almost compressed to the limit, and A body tilting device for a railway vehicle with an air spring, characterized in that the auxiliary piston is configured to move to the air spring 3b side, and the left and right air spring heights can be individually adjusted.