JPS63207768A - Car body tilter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a car body tilting device for a railway vehicle that tilts the car body when traveling on a curve, etc., and is particularly suitable for a magnetically levitated vehicle traveling at high speed. It is related to.

[Conventional technology]

Conventionally, in vehicles traveling at high speed, ride comfort is impaired by centrifugal force generated when passing through curves, so the ride comfort has been improved by tilting the vehicle body to cancel out the centrifugal force. The device for tilting the car body is one that is provided with a means between the car body and the bogie for tilting the car body with respect to the bogie, or a device that uses a force on the track corresponding to the curvature of the track.
Conventionally, it has been considered to provide a slope to tilt the entire vehicle. An example of the former is JP-A-59-2099.
56, as well as Japanese Patent Application Laid-Open No.
6-108346 is publicly known.

On the other hand, in a magnetically levitated vehicle that creates a magnetic field between the vehicle and the track and travels while floating, its running speed is the same as the storage speed, so 5g is taken into account in terms of tilt control of the track side or the vehicle body. There is a need. One configuration thereof will be explained with reference to FIG. In the configuration shown in the figure, a conventional vehicle body tilting means using hydraulic pressure is installed in a magnetically levitated vehicle. That is, the actuators 5, 5' are provided on the lower surface of the air spring 2.2' that supports the vehicle body l. In this configuration, in order to support the vertical load and the horizontal load of the vehicle body 1 by the actuator 5.5', in addition to the vertical load, the actuator 5,5'
A moment load is acting on the bearing of the rod part. Therefore, - in order to provide sufficient strength to withstand the various loads and moments, the actuator 5
, 5' had to be made large. In addition, 6 in the figure
is a trolley frame.

7 is a superconducting magnet attached to the bogie frame 6.

[Problem that the invention seeks to solve]

In the above configuration, since the actuators 5 and 5' are large, the weight of the entire vehicle body increases, and there is a risk that a complicated and large load will act on the air springs 2 and 2'. , 2' must also be considered.

On the other hand, in a magnetically levitated vehicle, since a large number of devices such as superconducting magnets 7 are attached to the bogie frame 6, the structure of the bogie portion is complicated. Therefore, when tilting the vehicle body 1, simply extending one cutuator 5 or 5' lowers the lower portion of the vehicle body 1 on the opposite side, which may come into contact with and damage the various devices. Therefore, when the vehicle body 1 is to be tilted, it is necessary to first stir the vehicle body 1 relative to the truck and then perform the tilting operation.

The object of the present invention is to provide a magnetic levitation vehicle with:
To provide a vehicle body tilting device capable of performing a good vehicle body tilting operation with a simple configuration.

[Means for solving problems]

In order to achieve the above object, the present invention provides a rotary beam that rotates about the center position in the width direction of the vehicle body and supports the vehicle body via an air spring, an extendable means for controlling the rotation angle of the rotary beam, and an extendable means for controlling the rotation angle of the rotary beam. and control means for controlling the expansion and contraction of.

[For production]

In the above configuration, when the vehicle enters a curved road, the expansion and contraction means is controlled by the control means to expand and contract to rotate the rotating beam, and the rotation of the rotating beam tilts the vehicle body. rotates around the center of rotation and restricts movement in the X4L body width direction, that is, in the left and right direction, so each [1
The vehicle body can be properly tilted without applying a complicated and excessive load to one member.

〔Example〕

Embodiments according to the present invention will be described below with reference to FIGS. 1 to 6. First, the structure of an embodiment of a vehicle body tilting device according to the present invention will be explained with reference to FIGS. 1 and 2. FIG. In the figure, the same reference numerals as in the conventional example indicate the same members. Reference numeral 3 denotes a rotating beam whose rotation center is located at the center position in the width direction of the vehicle body, and is rotatably supported by a pin 9 fitted into a bracket 4 attached to the bogie frame 6. Note that the rotary beam 3 has an elongated hole installed in the vertical direction, into which the bush 8 is fitted, and the vinyl J9 is fitted into the elongated hole. Further, a bush 10 is also provided between the pin "J9" and the bracket 4. One end of each of 5a and 57a is attached to the bogie frame 6 via the bracket 11, and the other end is attached to the rotating beam 6 via a pin n. The actuators are attached to each.

Next, a control system for the actuators 5a and 5'a will be explained with reference to FIGS. 3 to 5.

In the figure, the actuators 5a, 5'a, that is, the hydraulic cylinders are moved from the oil tank 13 to the filter 14 by a hydraulic pump 15 driven by a drive motor 16.
It is driven by pressure oil supplied through. 17 is a line fill provided in the hydraulic piping, and 18 is a safety valve provided in the piping on the pressure oil supply side.

19 is a coupling device for connecting with other hydraulic systems, ■ is a pressure reducing valve for adjusting and supplying the pressure of the pressure oil to be supplied, and n is installed on the bogie section installed at least in two places in the front and rear of the vehicle. These are servo valves provided corresponding to the actuators 5a and 5'a, respectively.

The pressure oil supplied by the hydraulic pump is supplied to the pressure reducing valve 2.
1, the pressure is adjusted to an appropriate pressure and supplied to the servo valve n. Note that the servo valve n is equipped with actuators 5a and 5.
A B port connected to the rod side of 'a and an A port connected to the head side are provided, and the expansion and contraction of each actuator 5a and 5'a can be controlled by controlling this servo valve n. ing. Note that each actuator 5a.

The discharged oil from 57a is returned to the oil tank 13 via piping via each servo valve n.

Next, the control system of the servo valve n will be explained with reference to FIG. The system stores track information, such as the radius of two curved points, the distance between transitional curves and circular curves, or the angle formed on the curved track, and the speed signal from the speedometer installed on the vehicle. This is a control device that calculates and outputs a control signal for controlling the actuators 5a, 5'a based on a position signal from a point detection means provided between the vehicle and the track. The control signal calculated and output by the control device array is amplified by the servo-assive 5 and then reaches the servo valve n, which operates the actuators 5a and 5'a in accordance with the control signal. As a result,
The inclination angle of the vehicle body l is controlled by the actuators 5a, 5'a according to the control signal of the control device i24, and the actual inclination angle of the vehicle body l is detected by the inclination angle detection means,
The tilt angle information is fed back to the control device.

Next, an example of the driving pattern in the above embodiment will be explained with reference to FIG. 5. In the figure, the vertical axis shows the traveling speed of the vehicle, and the horizontal axis shows the traveling distance of the vehicle, that is, the traveling position ill. Point C in the figure is a certain distance before the curved road. First, before tilting the vehicle body 1, raise the vehicle body 1 to prevent contact between the vehicle body 1 and the bogie caused by the tilt of the vehicle body 1. This is the point where you start letting things go. Point B is the point at which a command to tilt the vehicle body 1 is output, and the delay in the operation of the control system is corrected by 41 so that the command is output before the transition curve. Note that the control output output at the point B is a value corresponding to the control output at the point A after entering the curved road.

In such a configuration, when the magnetically levitated vehicle starts traveling and approaches the 0 point in FIG. The servo valve n supplies pressure oil to the head side of all the A boats, ie, the actuators 5 and 5'a. As a result, the actuators 5a, 5'a begin to extend, causing the rotating beam 3 to rise as it is. As the rotating beam 3 rises, the vehicle body 1 rises via the air spring 2. Then, when reaching point B in Fig. 5, the control device calculates a control command from the position signal, speed signal, and stored trajectory information, commands servo valve 5, and sends the servo valve B. Output. Note that the control command is a value calculated based on various conditions at point A. The servo valve n to which the control output is given is 1
Actuator 5a or 5 corresponding to the outer track side of the curved road
The A port is opened to supply pressure oil to the head side of 'a, and the actuator 5/A corresponding to the soft side of the curved road is
Open boat B to supply pressure oil to the rod side of a or 5a. By this operation, the rotating beam 3 rotates toward the center of the curved road, and the vehicle body 1 also tilts at the same time. In this way, the vehicle body 1 can be tilted depending on the traveling speed of the vehicle and the condition of the curved road, so that centrifugal force can be canceled and ride comfort can be improved. Further, in the above configuration, the actuator 5 is provided between the rotating beam 3 and the bogie frame 6.
a.

51a, and the air spring 2 is provided between the rotating beam 3 and the main body l, the load acting on the air spring 2 is predominantly a vertical load, resulting in a complicated and excessive load. Never. Therefore, the air spring 2 can be made small and compact. On the other hand, the actuators 5a and 5'a only need to rotate the rotating beam 3 rotatably attached to the bogie frame 6, and the load acting on the vehicle body 1 in the longitudinal and lateral directions is The rotary beam 3 and the bracket 4 are supported by the bogie frame 6. Therefore, the actuator 5a,
5'a only needs to have the ability to provide the rotating beam 3 with the rotational force necessary for the axially oblique movement of the vehicle body 1, and can be made small and lightweight.

Furthermore, in the above structure, the vehicle body 1 is once raised relative to the bogie and then the tilting operation is performed, so that damage caused by contact between the vehicle body 1 and the bogie portion due to the tilting motion of the vehicle body 1 can be prevented. Furthermore, there is no possibility of the vehicle colliding with the stopper means provided to prevent the contact, and a reduction in riding comfort due to impact can be prevented.

In addition, in the above embodiment, if the bogie part is improved to simplify the structure so that it does not come in contact with the vehicle body 1 during tilting operation, it is not necessary to provide a long hole in the rotary beam 3, and the vehicle body There is no need to perform the rising operation of step 1.

Next, another embodiment according to the present invention will be explained with reference to FIG. In the same figure, the same reference numerals as in the previous embodiment indicate the same members. Reference numeral 3a replaces the rotating beam 3 of the above-mentioned embodiment, and is a rotating beam that is divided in the middle and one end of each is rotatably attached by a pin 9a. Note that the vehicle body 1 is supported via an air spring 2 on the other end of the rotating beam 3a. Furthermore, the actuators 5a and 5'a themselves and their control systems are almost the same as in the previous embodiment.

According to such a configuration, the actuator 5a.

By operating 5'a separately, each rotating beam 3a
These can be operated separately, and can respond favorably to the tilting or vertical movement of the vehicle body I. In addition,
The loads applied to the actuators 5a, 5'a are the same as in the above embodiment;
In terms of size and weight reduction, this embodiment has the same effects as the previous embodiment.

〔Effect of the invention〕

As described above, according to the present invention, by tiltably supporting the vehicle body using a rotary beam, a favorable vehicle body tilting operation can be performed, and the structure of the drive system and the like can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the vehicle body tilting device according to the present invention, FIG. 2 is a cross-sectional view showing the rotating support portion of the rotating beam in FIG. 1, and FIG. 3 is a control of the actuator in FIG. 1. FIG. 4 is a circuit diagram showing a hydraulic circuit; FIG. 4 is a circuit diagram showing a control circuit for the actuator in FIG. 1; FIG. 5 is a graph showing operating conditions of the vehicle body tilting device in FIG. 1; FIG. 6 is a diagram showing a vehicle body according to the present invention. FIG. 7 is a front view showing another embodiment of the tilting device, and FIG. 7 is a front view showing a conventional vehicle body tilting device. l...Vehicle body, 2...Air spring, 3...
...Rotating beam, agent Masaru Ogawa

Claims (1)

[Claims] 1. A rotating beam that is installed to be rotatable about an intermediate position in the width direction of the car body as a fulcrum and supports the car body on the bogie, and one end is rotatable to the intermediate position of the rotating beam and the other end is rotatable to the bogie frame. 1. A vehicle body tilting device comprising: a connected extending/contracting means; and a control means for controlling the extending/contracting operation of the extending/contracting means in accordance with a control command calculated from vehicle speed and trajectory information.