JPH04173472A - Rolling stock bogie with body inclining device - Google Patents

Abstract

PURPOSE:To improve comfort on board and reduce the danger of turn-over by forming this truck into a bolsterless bogie with a curve guide guiding type body inclining device adopted thereto, thereby transmitting traction force without longitudinal opening of rail joint between a pendulum beam and a bogie frame, and controlling body inclination by an actuator. CONSTITUTION:A curve guide 6 for guiding the body inclining motion of a pendulum beam 3 is fitted to the pendulum beam 3, and the radius of curvature is made equal to the distance R to the pendulum center 11. A slider 7 guided along four grooves of the curve guide 6 by plural rows of ball bearings 8 is bolt-fixed to a slider support bearing 9 fitted onto the cross beam of a bogie frame. Four sets of such curve guide guiding devices are fitted between the pendulum beam of one truck and the truck frame 4 so as to obtain mechanism for performing body inclination and traction force transmission simultaneously without longitudinal (rolling stock proceeding direction) opening of rail joint between the pendulum beam 3 and the bogie frame 4. A hydraulic actuator 10 is further fitted to impede natural inclination and to perform smooth body inclining control at the curve entry and exit.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a bogie with a car body tilting device for railway vehicles, and in particular, when increasing speed on a line section with many curves with a small radius, Good riding comfort during transition curves at entrance and exit, and better prevention of body tilt and rts than before.
To provide a bogie with a car body tilting device for a railway vehicle, which has a simple M structure and is inexpensive to manufacture.

(Prior Art) An example of a conventional bogie with a vehicle body tilting device for a railway vehicle will be explained with reference to FIGS. 4 and 5. FIG. 4 is a front view of a conventional truck with a roller-type vehicle body tilting device, and FIG.
-B cross section shows details of the cam follower that transmits the longitudinal force, that is, the traction force, between the roller device and the pendulum beam and the bogie frame. In the figure, a vehicle body 1 is supported by a pendulum beam 3 via a pillow spring 2. This pendulum beam is supported by a pendulum roller device 13 disposed on a bogie frame 4 supported by a wheel shaft 5 via an axis spring, and a transfer plate 14 attached to the pendulum beam. Due to the force, the rolling plate 1 has a radius of curvature R with the pendulum center 1) as the center of rotation.
4 In other words, by the pendulum beam 3 moving in the left-right direction on the roller device 13, the vehicle body supported by the pendulum beam is tilted inward of the curve to reduce the lateral steady acceleration felt by the passengers,
This is intended to improve ride comfort when driving around curves. In this case, the transmission of the traction force between the pendulum beam 3 and the bogie frame 4 is
This is performed by cam followers 16 attached to both sides of the transfer plate 14 shown in the figure, that is, at the front and rear positions. There is also a structure in which an actuator 10 is attached between the pendulum beam 3 and the bogie frame 4 to control the vehicle body tilting operation smoothly at the entrance and exit of a curve.

The car body tilting device improves riding comfort by reducing the steady lateral acceleration felt by passengers on board, which cannot be compensated for by the cant set on the curve, by tilting the car body inward when the railway car runs on a curve at high speed. However, the problem with this is that when the vehicle body is tilted at the entrance/exit of a curve, if the tilt angular velocity of the vehicle body is large, passengers will be swept off their feet and have difficulty walking. Problems such as getting easily drunk may occur. Also, as shown in Figure 4, when the car body is tilted inward on the curve, the center of gravity 12 of the car body moves outward from the center of the track, so the center of rotation 1) of the car body tilt is high and there is a distance from the center of gravity of the car. In this case, the amount of movement of the center of gravity of the vehicle becomes large, resulting in problems such as an increased risk of overturning to the outside of the curve when the vehicle travels around a curve at high speed.

Furthermore, in the case of a vehicle equipped with a roller-type car body tilting device as shown in Fig. 4, it is necessary to protect the rollers 13 and rolling plates 14 with a dustproof cover to prevent them from being damaged by dust or rainwater, which complicates the structure of the bogie. There were problems such as problems such as problems and maintenance became difficult.

(Problems to be Solved by the Invention) As a method for solving the above-mentioned problems regarding ride comfort and movement of the center of gravity of a vehicle equipped with a vehicle body tilting device, it is possible to lower the center of rotation 1) of the vehicle body tilting as much as possible so that when the vehicle body tilts, passengers This reduces the lateral movement of the vehicle floor surface on which the person walks, reducing the feeling that his or her feet are caught, and improving the rotation center of the vehicle body tilt1) and the vehicle center of gravity12.
The goal is to shorten the distance between the two and reduce the amount of movement of the center of gravity. However, in the case of the above-mentioned conventional truck with a roller-type car body tilting device, the position of the rotation center 1) of the car body tilt is determined by the radius of curvature R of the rolling surface of the rolling plate 14, and the rotation center 1) is moved to the required position. In order to lower the height, it is necessary to reduce the radius of curvature of the transfer plate, but in order to incorporate such a transfer plate with a small radius of curvature into the pendulum beam 3, the height of the pendulum beam becomes high, making it difficult to configure the entire truck. In a structure in which a rolling plate with a small radius of curvature is supported by a roller device, the rollers 13 and the rolling plate 14
The contact surface pressure of the rollers and transfer plate becomes large, which causes problems such as poor durability of the rollers and transfer plate, and also makes it difficult to tilt the vehicle body smoothly.Furthermore, if the radius of curvature of the transfer plate becomes small, , press the pendulum beam against the side of this transfer plate 3
The structure of the cam follower 16 that transmits the traction force between the frame 4 and the bogie frame 4 becomes complicated, and its durability decreases.

In addition, it is difficult to omit the dustproof cover of the roller device when the roller type configuration is used as shown in Figure 4, and it is necessary to change to another vehicle body tilting mechanism where a simple dustproof cover will not cause any problems. .

(Means for solving the problem) Regarding the vehicle body tilting device, the center of rotation of the vehicle body tilting can be made as low as possible, and the entire device can be made smaller and lighter. Supporting roller devices 13 and 14 and cam followers 1 employed for transmitting traction force between the pendulum beam 3 and the bogie frame 4
Instead of 6, there is no play between the pendulum beam and the bogie frame in the front and back direction, and the vehicle tilt and traction force can be transmitted at the same time, and there is no problem even with a simple dustproof mechanism.
A curved guide type vehicle body tilting device is adopted, which includes a curved guide of 1 and a slider mechanism guided by double rows of ball bearings along the grooves of the curved guide. In addition, a pneumatic or hydraulic actuator is attached to the curve guide type vehicle body tilting device to smoothly control the vehicle body tilt at the entrance and exit of the curve.

(Embodiment) Next, an embodiment of a truck with a vehicle body tilting device according to the present invention will be described with reference to FIGS. 1, 2, and 3. Figure 1 is a front view of a bolsterless bogie that employs a curved guide type car body tilting device, Figure 2 is a side view of Figure 1, and Figure 3 is the curved guide section, pendulum beam 3, and bogie frame of Figure 1. 4 is a cross-sectional view taken along line A-A showing the attachment part to No. 4. In the figures, the same reference numerals as in the conventional example indicate the same members.

In Figures 1, 2, and 3, reference numeral 6 denotes a curved guide that guides the tilting movement of the vehicle body of the pendulum beam 3, and is attached to the pendulum beam 3, and its radius of curvature is equal to the distance R to the pendulum center 1). ing. A slider 7 guided by double rows of ball bearings 8 along the four grooves of the curved guide is fixed to a slider support 9 mounted on the cross beam of the bogie frame 4 with bolts or the like. As shown in FIGS. 1 and 2, four sets of the above-mentioned curved guide guide devices are installed between the pendulum beam 3 and the bogie frame 4 of one bogie, and between the pendulum beam 3 and the bogie frame 4,
This mechanism eliminates play in the direction of vehicle travel and simultaneously tilts the vehicle body and transmits traction force. The curved guide 6 and the slider 7 can be attached to the pendulum beam and the truck frame in the reverse manner, that is, the curved guide 6 can be attached to the truck frame and the slider 7 can be attached to the pendulum beam. Further, as for the dustproof mechanism, it is sufficient to simply cover the guide surface of the curved guide 6 with a simple cover such as a bellows. curved guide 6, ball bearing 8,
This curved guide guidance method, in which the slider 7 guides the car body tilting movement with a pendulum beam relative to the bogie frame, has low resistance to the car body tilting movement and can perform the car body tilting smoothly. If lowered, the natural inclination of the vehicle body due to excessive centrifugal force when traveling on a curve will be inhibited, so a hydraulic actuator 10 is installed to control the inclination of the vehicle body smoothly at the entrance and exit of the curve.

(Effects of the Invention) With the bolsterless bogie that employs the curved guide type car body tilting device of the present invention, it is possible to transmit traction force and tilt the car body by eliminating the back and forth clearance between the pendulum beam and the bogie frame. Furthermore, by installing a pneumatic or hydraulic actuator, it becomes possible to smoothly control the vehicle body inclination, so it is especially useful when increasing speed on a line section with many curves, and when adjusting curves during circular curves or transition curves at entrances and exits of curves. It is possible to improve the vibration riding comfort inside, and
Since the amount of movement of the center of gravity of the vehicle body can be reduced, the risk of the vehicle body overturning to the outside of the curve can be reduced and speed can be increased.

The device is smaller, lighter, and cheaper than conventional devices, and the dustproof mechanism can also be of a simpler structure.

[Brief explanation of the drawing]

Fig. 1 is a front view of a bolsterless bogie employing the curve guide type car body tilting device of the present invention, Fig. 2 is a side view of a bolsterless bogie employing the curve guide guide type car body tilting device of the present invention, and Fig. 3 is a side view of a bolsterless bogie employing the curve guide type car body tilting device of the present invention. This is a cross section taken along the line A-A showing the curved guide guide section in FIG. 1, its pendulum beam, and how it is attached to the bogie frame. In addition, Fig. 4 is a front view of a bolsterless bogie that employs a conventional roller type car body tilting device, and Fig. 5 is a front view of a bolster-less bogie that uses a conventional roller type car body tilting device.
A cross section is shown. 1... Vehicle 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, 1)...
・Rotation center of vehicle body inclination, 12... Center of gravity of vehicle body, 13.
... Roller device, 14... Rolling plate, 15... Roller support bearing, 16... Cam follower patent applicant Railway Technology Research Institute Figure 3, Figure 4

Claims (2)

[Claims] (1) A bogie frame supported by a wheel axle, a pendulum beam that supports the car body support air spring, four sets of curved guides arranged between the bogie frame and the pendulum beam to tilt the car body, and a curved guide along the groove of the curved guide. In a bogie with a body tilting device for a railway vehicle, the vehicle body tilting device includes a slider guided by a double row of ball bearing rows. A bogie with a car body tilting device for a railway vehicle, characterized in that it transmits tractive force by eliminating the play in the front and back direction between the frames and tilts the car body inward at the curved portion. (2) A car body for a railway vehicle according to claim 1, characterized in that a pneumatic or hydraulic actuator is provided between the pendulum beam and the bogie frame for tilting the car body inward at the curved portion. Trolley with tilting device.