JP2761432B2 - Body tilt device for railway vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle body tilting device for a railway vehicle. In particular, when the speed is improved in a line section with many curves with small radii, the riding comfort is good in the curves and in the transition curves of the entrance and exit of the curves, and the body inclination and dustproof mechanism are simpler than before. Thus, there is provided a vehicle body tilting device for a railway vehicle which is inexpensive to manufacture.

[Conventional technology]

An example of a conventional bogie with a vehicle body tilting device for a railway vehicle will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is a front view of a bogie and a vehicle body (two-dot chain line) having a conventional roller type vehicle body inclining device. FIG. 5 is a sectional view taken along the line BB of FIG.
Further, the details of the cam follower for transmitting the longitudinal force between the pendulum beam and the bogie frame, that is, the traction force are described. In the figure, the vehicle body 1
Are supported by a pendulum beam 3 via a pillow spring 2. The pendulum beam is supported by a pendulum roller device 13 disposed on a bogie frame 4 supported by a wheel shaft 5 via a shaft spring, and a rolling plate 14 attached to the pendulum beam. In the curved portion, the rolling plate 14 having the curvature radius R, that is, the pendulum beam 3 moves on the roller device 13 in the left-right direction by the centrifugal force acting on the vehicle body with the pendulum center 11 as the center of rotation. Thus, the vehicle body supported by the pendulum beam is tilted inward of the curve to reduce the steady left and right acceleration perceived by the passenger, thereby improving the riding comfort when traveling on a curve. In this case, the transmission of the tractive force between the pendulum beam 3 and the bogie frame 4 is performed by the rolling plate shown in FIG.
Cam followers 16 attached to both sides of 14
It is performed by Further, there is also a structure in which an actuator 10 is attached between the pendulum beam 3 and the bogie frame 4 so as to control the vehicle body tilting operation smoothly at the entrance and exit of the curve.

The body tilting device tilts the vehicle body into the curve when the railway vehicle travels on the curve at high speed, thereby reducing the left-right steady acceleration perceived by passengers on the vehicle that cannot be compensated by the cant set on the curve. The purpose is to improve comfort. However, as a problem, when the vehicle body is tilted at the entrance and exit of the curve, if the vehicle's inclination angular velocity is large, passengers will be scooped and their traveling will be difficult, and it will be easy to get motion sick. Problems arise. Also, as shown in FIG. 4, when the vehicle body is inclined inward of the curve, the center of gravity 12 of the vehicle body moves outward from the center of the track, so that the rotation center 11 of the vehicle body inclination is high and there is a distance from the vehicle center of gravity. In such a case, there is a problem that the amount of movement of the vehicle center of gravity increases, and when the vehicle travels on the curve at high speed, the risk of overturning outside the curve increases.

Further, in the case of a bogie with a roller type vehicle body tilting device as shown in FIG. 4, it is necessary to protect the roller 13 and the rolling plate 14 with a dustproof cover or the like so as not to be damaged by dust or rainwater, and the bogie structure becomes complicated. And maintenance became difficult.

[Problems to be solved by the invention]

As a method for solving the problems related to the ride comfort and the movement of the vehicle body weight center of the vehicle with the vehicle body tilting device, the center of rotation 11 of the vehicle body tilt is made as low as possible so that the lateral movement of the vehicle body floor surface on which the passenger walks when the vehicle body tilts. In addition to reducing the feeling that the feet are scooped, the distance between the rotation center 11 of the vehicle body inclination and the center of gravity 12 of the vehicle is shortened to reduce the amount of movement of the center of gravity. However, in the case of the bogie with the conventional roller type vehicle body tilting device described above, the position of the rotation center 11 of the vehicle body inclination is determined by the radius of curvature R of the rolling surface of the rolling plate 14, and the rotation center 11 is lowered to a required position. Therefore, it was necessary to reduce the radius of curvature of the rolling plate. However, when such a rolling plate having a small radius of curvature is incorporated into the pendulum beam 3, the height of the pendulum beam becomes high, and the configuration of the entire bogie becomes difficult. At the same time, in a structure in which a rolling plate with a small radius of curvature is
The contact surface pressure between the rolling element 13 and the rolling plate 14 increases, and the durability of the rollers and the rolling plate deteriorates. In addition, there is a problem that it is difficult to smoothly tilt the vehicle body. Further, when the radius of curvature of the rolling plate is reduced, the structure of the cam follower 16 for transmitting the traction force between the pendulum beam 3 and the bogie frame 4 by pressing against the side surface of the rolling plate becomes complicated, and its durability is reduced. I do.

Also, it is difficult to omit the dustproof cover of the roller device in the case of a roller type configuration as shown in FIG.
It is necessary to change to another body tilting mechanism that does not cause any problem even with a simple dust cover.

[Means for solving the problem]

In order to solve these problems, the vehicle body tilting device for a railway vehicle according to the present invention is a railway vehicle body tilting device for tilting a vehicle body mounted on a bogie around a longitudinal axis (body tilting center) of the vehicle body. There, it was arranged in the left and right direction of the vehicle,
A pendulum beam that supports the vehicle body, this pendulum beam is fixed to one of the beam and the bogie, and an arcuate grooved curved guide with the center of curvature at the vehicle body tilt center, and fixed to either the pendulum beam or the bogie. And a slider having a rolling bearing row for transmitting weight and traction force of the vehicle body while rolling along the groove of the guide, and an actuator for tilting the vehicle body.

[Action]

With respect to the vehicle body tilting device, the center of rotation of the vehicle body tilting can be reduced as much as possible, and the entire device can be reduced in size and weight. Also,
In the conventional roller type vehicle body tilting device, instead of the roller devices 13 and 14 for tilting the vehicle body and supporting the vehicle body, and the cam follower 16 adopted for transmitting the traction force between the pendulum beam 3 and the bogie frame 4, Curve by a curved guide and a slider mechanism guided by a rolling bearing along the groove of the curved guide, which can simultaneously transmit the vehicle body inclination and the traction force between the pendulum beam and the bogie frame, and have no problem with a simple dustproof mechanism. Employs a guide-guided body tilting device. Further, the curve guide-guided vehicle body tilting device is provided with a pneumatic or hydraulic actuator to smoothly control the vehicle body tilt at the entrance / exit of the curve.

〔Example〕

Next, an embodiment of the vehicle body tilting device according to the present invention will be described with reference to FIG.
This will be described with reference to FIG. 2, FIG. 2 and FIG. FIG. 1 is a front view of a bolsterless cart employing a curved guide-guided vehicle body tilting device. FIG. 2 is a side view of FIG. Third
The drawing is an AA cross section showing the curved guide guiding portion, the pendulum beam 3, and the mounting portion to the bogie frame 4 in FIG. In the drawing, the same reference numerals as those in the conventional example denote the same members.

1, 2 and 3, reference numeral 6 denotes a curved guide for guiding the vehicle body tilting movement of the pendulum beam 3. The curved guide 6 is attached to the pendulum beam 3 and has a radius of curvature equal to the distance R to the pendulum center 11. A slider 7 guided by a double row of ball bearings 8 along the four grooves of the curved guide is fixed by bolts or the like to a slider support 9 mounted on a lateral beam of the bogie frame 4. Between the pendulum beam 3 and the bogie frame 4 of the bogie 1, four sets of the above-mentioned curved guide guide devices are mounted as shown in FIGS. 1 and 2. In this guide device, there is no play between the pendulum beam 3 and the bogie frame 4 in the front-rear direction (the traveling direction of the vehicle), so that the mechanism can simultaneously transmit the vehicle body tilt and the tractive force. The installation of the curved guide 6 and the slider 7 on the pendulum beam and the bogie frame is the reverse of the above, that is, the configuration can be made even if the curved guide 6 is mounted on the bogie frame and the slider 7 is mounted on the pendulum beam. It is sufficient for the dustproof mechanism to cover the guide surface of the curved guide 6 with a simple cover such as a bellows. The curved guide guide system, in which the pendulum beam is guided by the curved guide 6, the ball bearings 8, and the slider 7 to the bogie frame, in terms of the vehicle body tilting operation, has a low resistance to the vehicle body tilting operation and can smoothly perform the vehicle body tilting. However, when the height of the rotation center of the vehicle body inclination is reduced, the natural inclination of the vehicle body due to excessive centrifugal force is hindered when traveling on a curve, so the hydraulic actuator 10 must be used to perform a smooth vehicle body inclination control at the entrance and exit of the curve. Attach.

〔The invention's effect〕

The bolsterless bogie adopting the curvilinear guide-guided vehicle body tilting device of the present invention makes it possible to transmit tractive force and to tilt the vehicle body between the pendulum beam and the bogie frame without play in the front-rear direction. Further, by attaching a pneumatic or hydraulic actuator, vehicle body tilt control can be smoothly performed. Therefore, especially when the speed is improved in a line section having many curves, the riding comfort in a circular curve or in a transition curve at the entrance / exit of the curve can be improved. In addition, since the amount of movement of the center of gravity of the vehicle body can be reduced, the risk of the vehicle body overturning outside the curve can be reduced and the speed can be improved. Further, the device becomes smaller, lighter and less expensive than the conventional device, and the dustproof mechanism can be made simple.

[Brief description of the drawings]

FIG. 1 is a front view of a bolsterless bogie employing a curved guide-guided vehicle body tilting device of the present invention, FIG. 2 is a side view of a bolsterless bogie employing a curved guide-guided vehicle body tilting device of the present invention, and FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 showing a state of attachment to the curvilinear guide and its pendulum beam and bogie frame.
FIG. 4 is a front view of a bolsterless bogie adopting the conventional roller type vehicle body tilting apparatus, and FIG. 5 is a BB view of FIG.
3 shows a cross section. 1 ... body, 2 ... air spring, 3 ... pendulum beam, 4 ...
Bogie frame, 5 ... wheel axle, 6 ... curved guide, 7 ... slider, 8 ... ball bearing row, 9 ... slider receiving bracket, 10 ... pneumatic or hydraulic actuator, 11 ... rotation center of body inclination , 12 ... The center of gravity of the body, 13 ...
Roller device, 14 Rolling plate, 15 Roller support bearing, 16 Cam follower.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B61F 5/22

Claims (1)

(57) [Claims] 1. A vehicle body tilting device for a railroad vehicle for tilting a vehicle body mounted on a bogie around a longitudinal axis (body tilt center) of the vehicle body; The pendulum beam and the pendulum beam are fixed to one of the beam and the bogie, and the arcuate grooved curved guide with the center of curvature at the vehicle body inclination center and the pendulum beam or the bogie are fixed to the other. And a slider having a row of rolling bearings for transmitting the weight and traction force of the vehicle body while rolling along the groove of the curved guide.