Disc brake of railway vehicle

FIELD: transportation.

SUBSTANCE: invention relates to braking equipment of railway vehicles, in particular, to disc brakes. A disc brake comprises a body arranged on a spring-loaded frame of the vehicle with a tong parallel-link motion, an amplification mechanism, shoes and friction pads interacting with the brake disc. The tong parallel-link mechanism is made by H-shaped levers. The body is made as a monoblock body with two coaxially arranged braking cylinders of a service and automatic parking brake. The body may freely rotate on an axis located horizontally in the plane of braking disc rotation. The amplification mechanism is located inside the monoblock body and is made as single-link in the form of a swinging stem contacting with a leash. The piston of the service brake is made with a stiffly attached guide and a swinging stem, and the piston of the automatic parking brake is equipped with a stem having a plug, a nut and a bolt. The stem with the plug acts at the service brake piston, and the nut and the bolt provide for manual disconnection of the automatic parking brake.

EFFECT: provides for reduced dimensions of a device with provision of required pressing force.

3 dwg

 

The invention relates to brake equipment for rail vehicles, in particular for disc brakes.

Known disk brake of the vehicle rolling stock [No. 2390449, 09.01.2008, VN 5/00], comprising a housing, located on the sprung frame of the vehicle with the tick of a parallelogram mechanism, mechanism-amplifier, pad, friction linings, which interacts with the brake disk.

The disadvantages of the presented similar are the following features: tracking of roll of the vehicle is due to the inclination of the brake shoes relative to the horizontal axis on the yoke, in turn, located on the levers of tick mechanism that leads to a significant clinovia wear to the brake pads and, consequently, to reduce braking performance and life; small ratio of tick mechanism with considerable dimensions; failure to install the automatic Parking brake without significantly increasing the overall size and weight.

Known clamping device of a disk brake of a rail vehicle [No. 108384, 10.05.2011, VN 5/00], comprising a housing, located on the sprung frame of the vehicle with the tick of a parallelogram mechanism is m, mechanism-amplifier, pad, friction linings, which interacts with the brake disk.

The disadvantages of the known device, taken as a prototype, is a significant size and the inability to install automatic Parking brake without significantly increasing the overall size and weight.

The problem to which the invention is directed, is the reduction of overall dimensions, while ensuring the required effort is pressed, the introduction of automatic Parking brake.

The problem is solved due to the fact that the disk brake of a rail vehicle, consisting of a body located on the sprung frame of the vehicle with the tick of a parallelogram mechanism, mechanism-steering, brake pads, friction linings, which interacts with the brake disc, according to a new technical solution tick parallelogram mechanism is made of H-shaped levers, the body is made in the form of a body-in-one with two coaxially arranged brake cylinders service and automatic Parking brake, and the body has freedom of rotational movement on an axis located horizontally in the plane of rotation of the brake disc, mechanism-amplifier is located inside the body-in-one and made single in the form of cacaos is gosia rod, contact with the leash, and the piston of the service brake carried out with a rigidly attached guide and swinging the rod and piston, automatic Parking brake provided with a stem with a plug, nut and bolt, and a rod with cap acts on the piston of the service brake, the nut and bolt provide a manually disable the automatic Parking brake.

The invention is illustrated by the following drawings: Fig.1, figs.2 and Fig.3 shows schematically the proposed mechanism.

Disk brake of a rail vehicle includes: a housing 1, through which the axle 2 and the suspension 3 is mounted on the sprung frame of the vehicle; the piston of the service brake 4 is rigidly fixed to the guide 5 and the swinging shaft 6; a return spring 7, the piston Parking brake 8 with the rod 9 and the cap 10, the nut 11 and the bolt 12, is required for manual disconnection of the Parking brake; spring Parking brakes 13 and 14; automatic gap 15; rotating the platen 16 with the sample, in which by means of bolts fastened the leash 17; axis 18, connecting the swinging rod 6 and the lead 17; H-shaped levers tick parallelogram mechanism 19 mounted on the through axis 20 passing through the hole, eccentric drilled in the shaft 16 and the hole in the casing 1; rods 21 parallelograms the mechanism, providing the orientation of the brake pads parallel to the plane of rotation of the brake disc; brake pads 22, fixed on the axis 23 passing through holes in the levers 19. Pads 22 are shaped grooves for installing the brake pads 24, a locking latch. The housing 1 is made in the form of a body-in-one with two coaxially arranged brake cylinders 25, 26 service and automatic Parking brake.

The disk brakes of railway vehicles is as follows.

In the absence of air pressure in the brake cylinders 25 and 26, the workload is generated by the action of springs 13 and 14 on the piston 8 Parking brake, which, in turn, through the rod 9 and the cover 10 acts on the piston 4 service brakes, transmitting force through the swinging rod 6 on the lead 17, which rotates the platen 16. The levers 19, secured at the midpoint in the eccentric hole of the platen 16 and the housing bore axis 20, press brake pad 22 attached to them brake pads 24 to the disk.

When compressed air in the brake cylinder 26 of the Parking brake piston 8 moves in the opposite direction, compressing spring 13 and 14, the piston 4 moves in the same direction under the action of the return spring 7 and, acting through bacause the SJ stem 6 on the lead 17, rotates the platen 16, pushing the pads away from the brake disk.

During movement of the vehicle brake cylinder Parking brake is under the constant pressure of compressed air and do not interfere with service brakes.

When compressed air in the brake cylinder 25 of the service brake piston 4 through the swinging rod 6 acts on the lead 17, which rotates the platen 16. The levers 19, secured at the midpoint in the eccentric hole of the platen 16 and the housing bore axis 20, press brake pad 22 attached to them brake pads 24 to the disk.

When removing the pressure in the brake cylinder 25 service brakes built into him return spring returns the design of the disk brake in the initial unloaded state.

Reduction of overall dimensions is due to the fact that the body is made in the form of a body-in-one with two coaxially arranged brake cylinders service and automatic Parking brake, and gear-amplifier is located inside the body-in-one and made single in the form of a swinging rod in contact with the leash. Fluctuations of the pair of wheels with the brake disk in the direction perpendicular to the working surface of the brake disc, tracked due to the rotation of the levers 19 on the axis 20. The emergence of the Ren of the vehicle is compensated by turning the block on the horizontal axis 2, running parallel to the plane of rotation of the brake disk.

Reducing the dynamic impact of the pads on the disc is achieved by the location of all solid elements of the clamping mechanism on the body.

Uniform wear of the friction lining is provided by the constant position of the rubbing surfaces parallel to the working surface of the brake disc using the structures of the parallelogram formed between the housing 1, the levers 19, stand pads 22 and rods 21.

Disk brake of a rail vehicle, consisting of a body located on the sprung frame of the vehicle with the tick of a parallelogram mechanism, mechanism-steering, brake pads, friction linings, which interacts with the brake disc, wherein tick parallelogram mechanism is made of H-shaped levers, the body is made in the form of a body-in-one with two coaxially arranged brake cylinders service and automatic Parking brake, and the body has freedom of rotational movement on an axis located horizontally in the plane of rotation of the brake disc, mechanism-amplifier is located inside the body-in-one and made single in the form of a swinging rod, contact with the leash, and the piston of the service brake is made with strictly prisoedinenii guide and swinging shaft, and piston, automatic Parking brake provided with a stem with a plug, nut and bolt, and a rod with cap acts on the piston of the service brake, the nut and bolt provide a manually disable the automatic Parking brake.



 

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