Brake pad railway rolling stock

 

(57) Abstract:

Brake Shoe for railway vehicles, comprising a metal frame and mounted thereon a polymeric composite friction element, characterized in that the polymer composite friction element is made of two layers having different conductivity, and a layer in contact with a metal frame made of polymer composite friction material, the conductivity of which is lower than thermal conductivity of polymer composite friction material of the layer situated on the side of the working surface of the pad, and placed between layers is a layer made of a material, thermal conductivity greater than thermal conductivity of less heat-conducting layer, but less than thermal conductivity over the conductive layer.

 

Same patents:

The invention relates to a friction plate for a disc brake, in particular for road and rail vehicles, which are made of one or several parts and consists of a deposited on the carrier plate or sheet block of compacted friction material and carrier plate on the side of the block of friction material is applied substrate carrying the layer of the individual firmly linked to a block of friction material shaped protrusions with the extension to the top, and the block of friction material is pressed onto the supporting layer is attached with the filling of the grooves separate shaped protrusions

The invention relates to the brake pads railway rolling stock

The invention relates to the brake pads railway rolling stock

FIELD: railway transport; vehicle brakes.

SUBSTANCE: proposed brake shoe of rail vehicle has off-axial conical working surface and cylindrical rear surface. Distance between axis of rotation of rear surface of shoe and working surface is greater than distance between axis of rotation of working surface and shoe working surface.

EFFECT: improved operating characteristic of shoe owing to reduction of possibility of cracking and breaking of edge parts of shoe in operation.

2 dwg

FIELD: railway transport; vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains friction member and metal skeleton, being essentially perforated metal strip and wire frame combined with strip. Ratio of mass of metal skeleton and mass of shoe is 1:15 - 1:35, and ratio of mass of metal perforated strip and mass of wire frame is 1:1 - 1:6.

EFFECT: increased strength of shoe.

1 dwg

FIELD: railway transport; vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains friction member made by hot mounding method from composition containing polybutadiene rubber, curing group, powder fillers and fiber. Friction member is made with ratio of fiber and power fillers in composition being 1:1 - 1:20.

EFFECT: increased strength of shoe owing to increased strength of friction member by choosing optimum ratio of fiber and powder fillers.

1 dwg

FIELD: railway transport vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains polymeric friction member secured on metal skeleton being essentially perforated metal strip provided with hole for cotter and combined with closed frame. Plane of symmetry of hole for cotter asymptotically approaches plane of symmetry of shoe. Friction member is made by hot molding method from composition in which mass of rubber is 5-30% of mass of composition.

EFFECT: improved performance characteristics of brake shoe owing to higher strength indices.

1 dwg

FIELD: railway transport; brake shoes of rolling stock.

SUBSTANCE: proposed brake shoe contains metal wire frame with backing and with hole for cotter in central projection of shoe, and friction part with hard inserts. Insert made of metal in form of rectangle in longitudinal section with side walls over entire length of shoe and with, at least, two bridges from each side from central projection of shoe. Bridges contain fixing cavities for frame fittings, and composite friction element is arranged inside insert. Invention provides increase of braking efficiency of shoe if water or ice gets into friction zone, improves reliability of design of shoes operating in cold climate and frequent application of brakes.

EFFECT: increased service life of wheels.

3 cl, 5 dwg

FIELD: railway transport; brake shoes of rail vehicles.

SUBSTANCE: proposed brake shoe has metal skeleton-back with hole for cotter in central projection of shoe. Skeleton-back is made in plan in form of rectangle with side walls over entire length of shoe and with at least two bridges. Said bridges connect side walls being arranged symmetrically at both sides relative to central projection of shoe. Bridges are provided with fixing grooves for composite friction member arranged inside skeleton-back.

EFFECT: increased braking efficiency of shoe if water or ice get in friction zone, improved reliability of design of shoe in operation in cold climate and at frequent application of brakes.

3 cl, 1 dwg

FIELD: railway transport; brakes.

SUBSTANCE: proposed brake shoe contains metal skeleton with U-shaped projection in central part and compositive friction member and one hard insert. Hard insert is arranged in central part of shoe, being welded to metal skeleton. Hard insert is made of high strength or malleable cast iron. Ratio of area of working surface of hard insert to total area of shoe working surface if from 4% to 20%.

EFFECT: provision of cleaning and polishing action of hard insert onto wheel without impairment of operation of brake shoes at braking.

1 dwg

FIELD: railway transport; brakes.

SUBSTANCE: proposed brake shoe contains composite friction member, metal skeleton and hard insert. Metal skeleton consists of two parts, namely, main strip with projection in central part, and reinforcement plate welded to main strip. Hard insert is welded to reinforcement plate of metal skeleton in its central part by continuous weld in longitudinal and/or transverse direction.

EFFECT: increased strength and improved reliability of brake shoe.

1 dwg

FIELD: railway transport; brake.

SUBSTANCE: proposed brake shoe contains metal skeleton with projection in central part, composite friction member and hard insert. Shoe is furnished with two flat heat insulating elements arranged at both sides of insert between insert and friction and overlapping zone of their contact inside shoe along width and height of shoe. According to second version, shoe is furnished additionally with open slots at both sides from insert between insert and friction member, and overlapping zone of their contact inside shoe along width and height of shoe.

EFFECT: increased reliability of shoe by changing its design to increase heat resistance by preventing thermal cracks in body of friction member and its burning in place of contact with cast iron insert in manufacture and in service.

3 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transportation, particularly to train brake blocks. The brake block contains a metal carcass representing a basic band with a П-shape ledge in its central part, two side bosses and a friction ceramic metal element. The said metal carcass is furnished with a reinforcing plate, a copper-plated steel strip equal in length and width to the said friction ceramic metal element rear side and sintered to it at pressure in the furnace. The metal carcass basic band with the said П-shape ledge in its central part is welded from outside to the said reinforcing plate on the block rear in the holes specially made to this end in the metal carcass basic band and on both end faces of the brake block.

EFFECT: higher strength and reliability of ceramic metal brake block, easier manufacturability.

1 dwg

Friction unit // 2250397

FIELD: mechanical engineering; friction units containing reinforcing metal framework, for example blocks for automobile disk brakes; friction units for various machines and mechanisms.

SUBSTANCE: proposed friction unit has metal framework with holes and friction member molded to it and provided with projections corresponding to holes in framework; projections are received by these holes. Novelty of invention consists in height of projections which is lesser than depth of holes; surface which is not brought in contact with framework inside holes has recesses in at least one of projections. Proposed friction unit enhances resistance of joint of framework with friction member to shear loads.

EFFECT: enhanced resistance to shear loads; reduced mass; low requirements for strength of composite material; facilitated procedure of manufacture.

2 dwg

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