JPH0787683B2 - Main motor with disc brake device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disc brake device of a railway vehicle and a traction motor, and a brake disc of the disc brake device, its scissors device, and a support frame of the traction motor are integrally structured. By constructing and mounting the integrated support frame on a bogie frame supported by a shaft spring or a vehicle body supported by a pillow spring, the disc brake device can be made smaller and lighter and given to a track at high speed. It is possible to reduce the influence, improve the stability of high-speed running, reduce the lateral pressure, and improve the comfort after riding.

(Prior Art) In a conventional railway vehicle, as shown in FIG. 1, the disc brake device and the main motor are individually mounted on a bogie frame as independent devices. The disc brake device is
As shown in FIGS. 2 and 3, it comprises a brake disc and a scissor device for the disc. The brake disc is mounted on the side surface or axle of the wheel, and the scissor device for the disc such as the brake cylinder is mounted on the bogie frame. In this case, since the brake disc is attached to the wheel or axle not supported by the shaft spring, it has a great influence on running performance such as track deviation and wheel load variation in high-speed vehicles. On the other hand, since the disc scissor device is mounted on the bogie frame supported by the shaft spring, relative displacement occurs due to the flexure of the shaft spring with respect to the brake disc mounted on the wheel axle, which causes uneven wear of the disc when sandwiching the brake disc. If the disc is unbalanced due to the uneven wear of the disc, it may cause harmful vibration of the vehicle body.

In addition, there are examples in which the brake disc is directly attached to the armature shaft of the main motor, and there is an example in which it is attached to the power transmission shaft that connects the main motor and the gear device. The structure that supports the brake disc and the scissor device of the disc brake device that are transmitted separately causes uneven wear of the brake disc and causes vibration due to mass imbalance. There was a problem such as weight reduction.

(Problems to be Solved by the Invention) In the conventional bogie, the main motor and the disc brake device are supported by the bogie frame as separate devices as shown in FIG. The disc brake of the disc brake device is attached to the side surface of the wheel or the axle, as shown in FIGS. 3 and 4.

In the conventional disc brake device for railway vehicles, since the brake disc is attached to the wheel or axle that is not supported by the shaft spring, the track discrepancy is promoted and it causes wheel load fluctuations. It should be mounted on a bogie frame supported by a spring or a car body supported by a pillow spring. In addition, it is difficult to correct the mass imbalance of the brake disc that is attached to the wheels and axles, which causes front-back vibration and vertical vibration of the vehicle body. Furthermore, since the conventional disc scissor device is mounted on the bogie frame supported by the shaft spring, relative displacement occurs due to the flexure of the shaft spring with respect to the brake disc mounted on the wheel axle, which causes uneven wear of the disc when sandwiching the brake disc. In addition, the uneven wear of the disc causes mass imbalance in the disc, which causes vibration of the vehicle body. Therefore, the relative displacement between the brake disc and the scissor device of the disc should be minimized. Use a mechanism that allows uniform tightening.

Therefore, an increase in unsprung mass not supported by the axial spring,
There are problems such as uneven wear of the disc brake and difficulty in downsizing and weight reduction of the disc brake device.

In the case where the brake disc is mounted on the same axis as the armature shaft of the main motor, there are problems such as heat and vibrations of the brake disc being transmitted to the armature shaft, so countermeasures are necessary.

(Means for Solving the Problem) The main motor and the disc brake device, which are conventionally independent devices, are integrally supported by the magnetic frame of the main motor and the support frame of the disc brake device including the brake disc and the disc scissor device. A frame or bolts are used to form an integral structure, and the rotary shaft of the brake disc and the armature shaft of the main motor are directly connected by a thin shaft joint. The main motor and the disc brake device, which are configured as a support frame having this integral structure, are mounted on a bogie frame supported by a shaft spring or a vehicle body supported by a pillow spring. Brake disc When directly connected to the armature shaft of the main motor, the number of revolutions of the disc increases and the temperature of the disc rises rapidly due to frictional heat with the brake lining during braking. Effectively used for cooling.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the support frame of the disc brake device including the magnetic frame of the main motor, the brake disc, and the scissor device of the disc is configured as a support frame having an integral structure, and the rotating shaft of the brake disc and the electric motor of the main motor are configured. The disc brake device is made smaller and lighter as a structure in which the slave shaft is directly connected by a thin type and a shaft joint, and the size and weight of the disc brake device are reduced so that relative displacement does not occur between the brake disc and the scissor device of the disc. The mechanism is such that the brake disks are evenly tightened by piping so that the supplied hydraulic pressures are equal, and the brake disks are connected by connecting the rotating shaft of the brake disk and the armature shaft of the main motor with a thin flexible shaft joint. The heat and vibration of the are not transmitted to the armature shaft.

Furthermore, in order to prevent the temperature of the brake disc and brake lining directly connected to the armature shaft of the traction motor from rising rapidly, as shown in Fig. 1, the cooling air of the traction motor is guided through the support frame to cool the brake disc. I tried to use it effectively.

In the figure, the arrows indicate the flow of cooling air in the main motor and the disc brake device and the supply of hydraulic pressure to the brake cylinder of the disc brake device.

(Effect of the invention) The brake disc of the disc brake device, the scissors device and the main motor are integrally formed, and by mounting this integrated structure on a bogie frame or a vehicle body, the disc brake device can be made compact and lightweight. At the same time, it contributes to reduction of influence on track deviation, reduction of wheel load fluctuation, improvement of high-speed running stability, reduction of lateral pressure, improvement of riding comfort, and speeding up of rolling stock.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main motor with a disc brake device according to an embodiment of the present invention, FIG. 2 is a view of mounting a conventional electric motor and a disc brake device on a bogie frame, and FIG. 3 is a cross-sectional view of a conventional disc brake device. FIG. 4 and FIG. 4 are sectional views of a conventional lever type disc brake device. 1 …… Main motor, 2 …… Disc brake device, 3 …… Bogie frame, 4 …… Gear device, 5 …… Wheels, 6 …… Axle, 7 …… Brake disc, 8 …… Unit type disc scissors device , 9 ……
Lever type disc scissors, 10 …… hydraulic cylinder, 11…
… Lever, 12 …… Brake lining, 13 …… Support frame for traction motor with disc brake, 14 …… Brake disc rotating shaft, 15 …… Armature shaft, 16 …… Thin shaft coupling, 17 …… Flexible shaft coupling, 18 …… Flow of cooling air in the main motor and the disc brake device, 19 …… Supply of hydraulic pressure to the brake cylinder of the disc brake device

Claims (1)

[Claims] 1. In a main electric motor and a disc brake device used in a railroad vehicle, a magnetic frame of the main electric motor and a support frame of a disc brake device including a brake disc and a disc scissor device are integrally formed, or integrally formed by bolt fastening. In addition, the armature shaft of the traction motor and the rotary shaft of the brake disc are directly connected by a thin shaft coupling, and are attached to the bogie frame or the underside of the vehicle body frame. .