Brake pad

 

(57) Abstract:

Usage: used in rail transport and can be used on rolling stock of railway transport. The inventive brake Shoe containing friction element and the device for attaching the pads to the details of the linkage of the vehicle, the surface of the friction element from the side of the wheel flange is covered with a layer of antifriction material. 1 Il.

The invention relates to rail transport, for the design of brake pads and can be used on rolling stock of railway transport.

Famous ridge brake pads rolling stock, consisting of the friction part and device for attachment to a Shoe linkage (Inozemtsev Century, and other Automatic brakes. Textbook for high schools as well.D. transport, M, Transportation, 1981, S. 276). When the brake pad pressed against the tread surface of the wheel. As a result of friction of the friction part of the pads against the wheel braking force occurs. In the process of braking friction pads part interact not only with the rolling surface of the wheel, but with a crest, which reduces the life of the wheels.The purpose of the invention increase the service life of the wheels of the rolling stock.

To achieve the goal in a brake Shoe, comprising a friction element, and devices for securing the pads to the details of the linkage of the vehicle, the surface of the friction element from the side of the wheel flange is covered with a layer of antifriction material.

The presence of anti-friction layer eliminates the wear of the ridges, in addition, the use of anti-friction material layer of the solid lubricant, for example, desulfatohirudin /MoS2/ contributes to creating on the crests of wheels films possessing lubricating properties. This also increases the life of the wheels by reducing wear of the ridges in the interaction with their rails in curves (Locomotive TEK, M. Transport, 1976, S. 360).

The drawing shows the cross section of the proposed pads when interacting with the wheel of the vehicle.

We offer brake pad includes a friction element 1, ustrasana wheel 5 mounted anti-friction plate 6 (for example, from desulfatohirudin MoS2or graphite-containing dry film lubricant that retains its properties up to temperatures of 600oC).

When the brake pad pressed against the wheel with a force P. as a result, the element 1 made of cast iron composite material, ceramics, and so on) interacts with the working surface of the wheel 5. The wheel flange 5 is separated from the element 1 plate 6. This eliminates the wear ridge. In addition, the plate 6 causes the crest of the layer of dry lubricant.

When you leave the brake Shoe away from the roll surface by the value of 10-15 mm

The interaction of the pad when it stops. However, the film antifriction material deposited on the comb plate 6, is stored, which reduces the wear of the ridges and rails, especially in curves.

The anti-friction layer on the side surface of the friction element can be applied in the manufacture of pads, for example, by the use of glue with the antifriction filler formed at the casting of the blocks obtained by the method of spraying, using the technology of powder metallurgy, etc.

The application of the proposed pads will reduce the wear of wheel flanges of the rolling stock by drawing on either the in for attaching the pads to the details of the linkage, characterized in that the surface of the friction element from the side of the wheel flange is covered with a layer of antifriction material.

 

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FIELD: railway transport.

SUBSTANCE: proposed mechanical lock of brake cylinder rod contains brake cylinder rod with cylindrical insert with wedge-like cutout in zone where insert engages with pressure strips to prevent slipping of brake cylinder rod I fixed position. Stop clamping device is made in from of two clamps of self-braking multistep drives-motion converters to prevent separation of clamp under action of elastic forces of brake leverage and release spring of piston of brake cylinder in fixed position. To realize maximum possible force of clamps, their longitudinal axes are arranged square to spaces of wedge-like cutouts of insert and at acute angle to longitudinal axis of rod. Pneumatic drive is made in from of two individual double-acting pneumatic cylinders with possibility of use of air from main line of brake cylinder at braking for additional, drive apart from cylinder spring to provide clamp of rod of brake cylinder in brake-applied position and it is designed for fitting mechanical lock of brake cylinder rod onto brake cylinders of any type cars and locomotives.

EFFECT: improved fixing of brake cylinder rod.

1 dwg

FIELD: railway transport.

SUBSTANCE: proposed mechanical lock of brake cylinder rod contains brake cylinder rod with cylindrical insert with wedge-like cutout in zone where insert engages with pressure strips to prevent slipping of brake cylinder rod I fixed position. Stop clamping device is made in from of two clamps of self-braking multistep drives-motion converters to prevent separation of clamp under action of elastic forces of brake leverage and release spring of piston of brake cylinder in fixed position. To realize maximum possible force of clamps, their longitudinal axes are arranged square to spaces of wedge-like cutouts of insert and at acute angle to longitudinal axis of rod. Pneumatic drive is made in from of two individual double-acting pneumatic cylinders with possibility of use of air from main line of brake cylinder at braking for additional, drive apart from cylinder spring to provide clamp of rod of brake cylinder in brake-applied position and it is designed for fitting mechanical lock of brake cylinder rod onto brake cylinders of any type cars and locomotives.

EFFECT: improved fixing of brake cylinder rod.

1 dwg

FIELD: railway transport.

SUBSTANCE: invention relates to brake systems of railway traction vehicles, mainly, locomotives, motor cars and special self-propelled trains with more than one control posts. Possibility of control of railway vehicle brakes is defined by main procedure at which driver's valves are disconnected and connected to brake main line at inoperative and operating control posts, respectively. If necessary, additional operations are carried out, i.e. auxiliary brake valves are disconnected and connected with main line of brake cylinders in similar manner. These procedures provide possibility of switching on traction. Forced execution of said main procedure is provided for which purpose atmospheric cocks are installed by means of which main line taps of driver's valves are connected to and disconnected from atmosphere from inoperative and operating control posts. Charging of brake main line provides possibility of switching on traction only from operating control post which is provided by checking position of plug of atmospheric cock. If said additional procedure is to be executed, it is carried out together with carrying out of main procedure.

EFFECT: prevention of narrowing of channels to pass compressed air, provision of possibility of creation of traction only when brake main line is charged.

3 dwg

FIELD: railway transport.

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EFFECT: provision of parallel release of brake shoes from wheel roll surface at preservation of simple design.

3 dwg

FIELD: railway transport.

SUBSTANCE: invention relates to brake systems of freight cars, namely, to design of brake riggings installed on bogies to transmit force of brake cylinder to brake shoes interacting with wheels. Proposed brake rigging includes vertical levers. Upper part of one of levers is connected with tie-rod of car brake system, and upper part of other lever, with shackle of dead point holder. Lower parts of vertical levers are connected by brace, and in middle parts brake beams are hinge secured being suspended through swinging suspension from brackets of side frames and connected by elastic rod installed parallel to longitudinal axis of bogie. One end of said elastic rod is secured in guide of first brake beam, and other end is mounted in guide of second brake beam for reciprocation. Novelty is that proposed brake rigging is furnished with second elastic rod connecting brake beams in mirror like manner, each elastic rod being provided with limiting head on one end and secured from side of one of brake beams by means of clamp with two coaxial holes feted on elastic rod and arranged inside guide. Bent-on wall of clamp encloses one of webs of brake beam guide and rod head. Elastic rods are installed in parallel on end parts of brake beams between brake shoe and spacer. One rod is secured in guide of first brake beam, and the other, in guide of second brake beam.

EFFECT: provision of parallel release of brake shoes from wheel roll surface at preservation of simple design.

3 dwg

FIELD: railway transport.

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EFFECT: enlarged operating capabilities.

1 dwg

FIELD: railway transport.

SUBSTANCE: proposed pneumatic system of automatic brake equipment contains air distributor, spare reservoir, two subsystems "automatic mode-brake cylinder" for each cantilever part of vehicle. Each subsystem provides independent transmission of brake forces to actuating mechanism of bogie of each cantilever part in proportion to its load. Invention improves efficiency of braking of vehicles carrying loads with displaced center of gravity relative to longitudinal axis of vehicle and provides stable brake characteristics and operation reliability.

EFFECT: enlarged operating capabilities.

1 dwg

Brake beam // 2254254

FIELD: railway transport; rail vehicle brake leverage.

SUBSTANCE: proposed brake beam contains bar with string divided in middle part by brace and connected at ends by means of force transmitting unit consisting of series-mounted thrust yoke, insert, brake holder with shoe and end piece held from longitudinal displacement by means of device with flexible member. Said member is made in form of cylinder arranged between thrust surface of end piece and wedge ring whose inner surface is made in form of truncated cone engaging with outer surfaces of locks getting into conical slot made on end cylindrical surface of string.

EFFECT: provision of reliable fixing of brake holder against longitudinal displacement, possibility of easy disassembling of said unit.

3 cl, 5 dwg

FIELD: railway transport.

SUBSTANCE: proposed rail vehicle bogie brake includes brake main line connected through air distributor with standby reservoir and main brake cylinder hinge mounted on bogie whose piston is connected through rod and bell crank with brake shoe control leverage. Additional cylinder is hinge-mounted on vehicle bogie in parallel with main cylinder. Rod of additional cylinder is fitted in slot of shackle for translation, shackle being hinge-secured on bell crank of main brake cylinder. Piston of additional cylinder is spring-loaded from side of rod by compression spring, its underpiston space communicates with atmosphere and its overpiston space communicates with standby reservoir through pipeline.

EFFECT: prevention of self-movement of rail vehicles cut off from locomotive.

1 dwg

FIELD: railway transport; freight car brake leverages.

SUBSTANCE: proposed brake leverage contains two horizontal levers connected by tie-piece in middle part. Said tie-piece is made in form of H-piece. Webs of H-piece are arranged along middle part of corresponding horizontal lever and are provided with at least three holes, each. Same number of holes to form articulated joint between tie-piece and horizontal levers are made in middle part of each horizontal lever. End of one horizontal lever is hinge-coupled with rod of brake cylinder. End of other horizontal lever is hinge-coupled with bracket of brake cylinder cover. Opposite ends of horizontal levers are hinge-coupled with tie-rods. End of horizontal lever can be connected with tie-rod through brake cylinder rod projection regulator. Tie-rods are hinge-coupled with upper ends of vertical levers of car bogie brake leverages. Invention provides required braking force for freight car running along tracks of different gauge on bogies of different type with use of, both, cast iron and composition brake shoes.

EFFECT: provision of optimum values of mass and strength of tie-piece and length of horizontal levers.

2 cl, 1 dwg

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