JPH0211472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake device for a railway vehicle having a wheel set capable of self-steering.

Conventionally, when a brake device is provided on a bogie of a railway vehicle, wheel tread brakes and disc brakes are considered as its configuration. By the way, the brake device installed on a linear motor propulsion bogie that has a small overall structure and is capable of self-steering of the wheel axle has a small wheel diameter in order to downsize the entire bogie, so the amount of wear on the wheel tread cannot be large. Additionally, due to wear of the wheel treads, the size of the gap between the upper and ground elements of the linear motor changes drastically, resulting in problems such as troublesome and time-consuming adjustment. Further, when a disc brake is employed, a disc brake mechanism, that is, a means for suppressing the rotation of the brake disc is provided corresponding to the brake disc and is fixed to the bogie frame, and the brake disc is provided on the axle. However, in the configuration in which the disc brake mechanism is attached to the bogie frame as described above, since the corresponding brake disc is provided on the axle, there is a problem that self-steering cannot be performed on the axle when the brake is applied. . Furthermore, since the upper part of the vehicle is provided between the wheels, it is impossible to provide the blade disc between the wheels. Furthermore, it is conceivable to provide a brake disk at the end of the axle, but this has the disadvantage that the axle becomes long, making it unsuitable from the point of view of downsizing the truck.

In addition, in a trolley driven by a normal rotary electric motor or a trolley that does not have the driving force of an accompanying vehicle, self-steering of the wheeled vehicle is enabled,
Furthermore, even when a brake device is provided on each of the bogies, the configuration in which the brake mechanism is supported by the bogie frame as described above has the disadvantage that self-steering of the wheel axle cannot be performed when the brakes are activated.

The object of the present invention is to arrange an upper wheel between the wheels of a wheel axle via a spherical bearing, and to install an axle that is hard in the vertical direction and soft in the longitudinal direction of the bogie on an axle box provided at both ends of the wheel axle. Provided is a braking device for a railway vehicle that does not impede self-steering of the wheel axle when passing through a curve and can tolerate relative displacement between the wheel axle and the axle box in a linear motor bogie that supports the bogie frame via a spring. It's about doing.

The present invention includes a receiver which is installed at the longitudinal end of the bogie of an axle box provided at both ends of the wheel axle, extends in the axial direction of the wheel axle and faces the wheel, and which is rotatably opposed to the receiver via a pin. It is characterized by a pair of brake levers, one end of which is equipped with a brake lining that is pressed against disks provided on both sides of the wheel, and the other end of which is equipped with a brake cylinder.

An embodiment of the present invention will be described with reference to FIGS. 1 to 4. Fig. 1 is a plan view of a linear motor propulsion truck having a brake device according to the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is an enlarged plan view of the brake device part of Fig. 1, and Fig. 4. 3 is a sectional view taken along line AA in FIG. 3. In the figure, reference numeral 1 denotes an onboard element of a linear motor, which is supported by an axle 2 via a spherical bearing 3, and an anti-rolling device 4 for preventing rolling is provided between the axle 2 and the axle 2. 5 is a longitudinal force arm support provided on the upper surface of the vehicle upper body 1;
A longitudinal force transmission rod 6 whose one end is swingably connected to the bogie frame horizontal beam 7 is connected, and the longitudinal force from the car upper 1 is transferred to the bogie via the longitudinal force arm receiver 5 and the longitudinal force transmission rod 6. It is something that is transmitted to the frame.
The force transmitted to the bogie frame is transmitted to the vehicle body 10 via a thrust rod 8 which has one end connected to the bogie frame cross beam 7 and the other end connected to a center pin 9 provided at the bottom of the vehicle body 10. Reference numeral 11 denotes a left and right force arm receiver provided on the upper surface of the car upper 1, and 12 has one end swingably connected to the left and right force arm receiver 11, and the other end swingably connected to the bogie rear side beam 13. The left and right force transmission rod transmits the left and right force of the vehicle upper body 1 to the bogie frame through the left and right force arm receivers 11 and the left and right force transmission rods 12. Note that the lateral force transmitted to the bogie frame is
The right and left stopper metal fittings 14 provided on the lower surface of the vehicle 0 and the stopper rubber 15 provided on the bogie frame interfere with each other. 16 is an air spring provided between the vehicle body 10 and the bogie frame. 17
are the bogie frame side springs 13 attached to both ends of the axle 2.
An axle spring 18 (buffer) having a hard vertical spring constant and a soft longitudinal spring constant is provided between the axle box 17 and the bogie frame side beam 13. . Incidentally, the axle 2 is connected to the vehicle upper body 1 via the spherical bearing 3, and is connected to the bogie frame via the axle box 17 and the axle spring 18, so that it can swing around the spherical bearing 3. It is configured. Next, 19 is a wheel provided on the axle 2, and disks 20 and 21 are integrally provided on both sides of the wheel (the disks 20 and 21 may be detachably provided on the wheel 19 by other means). There is. A receiver 22 is attached to the axle box 17 and is provided corresponding to the wheel 19. A pair of brake levers 25 are attached to the receiver 22 via pins 28 so as to be able to swing opposite each other, and a brake cylinder 27 is provided between one of the brake levers 25. The brake lever 25 swings as the brake lever 25 expands and contracts. Also,
A lining receiver 24 is provided at the other end of each brake lever 25 via a pin 26, and a brake lining 23 is provided in correspondence with the discs 20 and 21 on the lining receiver 24. In addition,
The brake lining 23, the lining 24,
A disc brake mechanism composed of a brake lever 25 and a brake cylinder 27 is connected to the axle 2.
Even if there is a displacement between the axle box 17 and the axle box 17, the structure is such that the brake lever 25 can tolerate the displacement. In a normal bearing, essentially the axle 2 and the axle box 17
It is difficult to eliminate displacement, so being able to tolerate displacement as described above is effective from the standpoint of improving reliability.

In such a configuration, when the bogie runs on a curved track, the axle spring 18 allows displacement of the bogie frame and the axle 2, so the axle 2 swings in accordance with the curved track and performs self-steering. At that time, even if the brake is applied, the brake mechanism is
The discs 20, 21 are supported by the wheels 1
9 and is configured to follow the movement of the axle 2, so the self-steering is not obstructed.

According to this configuration, since the brake mechanism is supported by the axle box 17 and the discs 20 and 21 are provided on the side surfaces of the wheels 19, the self-steering of the axle 2 is not affected when the brake is applied. Therefore, self-steering of the axle 2 is possible regardless of brake operation. Furthermore, since there is no wear on the treads of the wheels 19 caused by the brake device, there is no adverse effect associated with the wear.
Since the disks 20 and 21 are provided on the side surfaces of the axle 9, the axle 2 does not become long unlike when a brake disk is provided at the end of the axle 2, and the truck can be easily miniaturized.

Incidentally, in the above embodiment, the vehicle upper part 1 is supported via a spherical bearing 3 provided at the center of the axle 2.
That is, the vehicle upper part 1 is installed between wheels 9 provided on both sides of the axle 2. It is desirable to make the area of the onboard shear 1 as wide as possible in order to increase the area facing the ground shear. On the other hand, the above-mentioned brake device has a structure in which each component is installed on a receiver 22 extending from an end of the axle box 17 in the longitudinal direction of the bogie in the axial direction of the axle 2. Therefore, even if the vehicle upper part 1 is disposed between the wheels 19 and the width thereof is wide, the brake device can be easily installed.

As explained above, according to the present invention, in a linear motor bogie in which a car upper is arranged between the wheels, relative displacement between the wheel axle and the axle box is allowed without inhibiting the self-steering of the wheel axle. By being able to do this, the reliability of the brake mechanism can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view of a linear motor propulsion truck equipped with an embodiment of the brake device according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an enlarged plan view of the brake device of FIG. FIG. 4 is a side view of FIG. 3. DESCRIPTION OF SYMBOLS 1... Vehicle upper element, 3... Spherical bearing, 6... Front-rear force transmission rod, 8... Thrust rod, 13... Bogie frame side beam, 17... Axle box, 18... Axial spring, 19...
...wheels, 20, 21...disc, 22...receipt, 23...brake lining, 25...brake lever.

Claims (1)

[Claims] 1. A wheel shaft that has an axle box at both ends and supports a linear motor upper part through a spherical bearing in the center,
Arranged parallel to the forward position of the truck, on the axle box,
In a railway vehicle brake system installed on a bogie that supports the bogie frame via an axle spring that is stiff in the vertical direction and soft in the longitudinal direction of the bogie, the axle box is installed at the end of the bogie in the longitudinal direction of the axle box provided at both ends of the wheel axle. and a support that extends in the axial direction of the wheel axle and faces the wheel, and is rotatably installed opposite to the support via a pin,
A brake device for a railway vehicle, comprising a pair of brake levers each having a brake lining at one end and a brake cylinder at the other end, the brake lining being pressed against a disk provided on both sides of a wheel.