Pad disc brake

 

(57) Abstract:

Usage: refers to the brake pads of disc brakes, designed for operation in different friction mechanisms. The inventive pad disc brake includes a polymer composite friction element fixed on a metal frame, the surface of which is in contact with the polymer element is made rough, and the topography of the rough surface is made stepwise in the form of rough edges that form non-intersecting lines of the troughs 3 and the projections 4, in alternating orthogonal to the line direction. 3 Il.

The invention relates to the brake pads of disc brakes, designed for operation in different friction mechanisms.

Known brake pad comprising a metal frame and reformovanii to him polymer composite friction element, the surface of the metal frame in contact with the polymer element, provided with spikes (see application laid Japan N 63-654, IPC F 16 D 69/04, 1988).

A disadvantage of the known technical solution is the complexity of manufacturing a metal frame, snabjennoi element with frame the inability to reuse the metal frame.

The closest to the invention is pad disc brake, comprising a metal frame and polymer composite friction element fixed to the frame (e.g., via adhesive), and the surface of the metal frame in contact with the polymer element is made rough (see accepted the proposal of Japan N 57-45939, IPC F 16 D 69/04, 1982).

The disadvantage of this solution is the lack of resistance of the connection metal frame and polymer element to shift, directed along the surface of the metal frame and the caller mutual displacement of the frame and polymer element.

The aim of the invention is to increase the resistance of the connection metal frame and polymer element to the longitudinal load causing the displacement of the frame and polymer element. Another technical effect of simplifying and improving technology of surface treatment of the frame before preformationism polymer composite friction element.

To achieve the above goal pad disc brake includes a polymer composite priceelement, made rough, and the topography of the rough surface is made stepwise in the form of irregularities, forming disjoint lines of depressions and protrusions, in alternating orthogonal to the line direction.

In Fig. 1 shows a block disc brakes, front view; Fig. 2 - option a metal skeleton, front view; Fig. 3 is another variant of a metal skeleton, front view.

The block contains a polymer composite element 1 is fixed on a metal frame 2. Polymer element 1 may be a composite friction material comprising a polymeric binder, particulate and fibrous fillers. Fixing polymer element on a metal frame can be preformance the original polymer composition or bonding. Metal frame can represent a flat metal plate in the desired shape and size. The surface of the metal frame to which is fixed a polymer element, roughened, provided with projections 3 and depressions 4, forming disjoint lines of depressions and protrusions. As a result, the surface has a stepped structure, where the lines of depressions and protrusions in alternate orthogonal to LIGNA roughness can be achieved, for example, the abrasive surface of the frame coarse abrasive tools (grinding wheels, skin and other)e

Pad disc brake containing polymer composite friction element fixed on a metal frame, the surface of the frame in contact with the friction element is made rough, characterized in that the topography of the rough surface formed disjoint lines of depressions and protrusions, alternating in the direction of the longitudinal axis of the pad.

 

Same patents:

Friction disc // 2082034
The invention relates to the field of engineering, namely for friction products, has a disk shape and is maintained in frictional nodes disc type

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.

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EFFECT: increased strength and improved reliability of brake shoe.

1 dwg

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