Composite brake pad railway vehicle

 

(57) Abstract:

Usage: used in brake pads railway vehicle. The inventive composite brake pad contains net-provodka frame 1 and the friction element includes a layer 2 Associacao material, priparkovannogo to the frame 1 and containing barite concentrate and carbon technical. The friction element is provided in addition with a layer 3 of Associacao material containing oxide and graphite, preferowanym to layer 2, with a thickness greater than the thickness of the layer 2. This will increase the wear of brake pads and extend its service life to the full depreciation without breakage. 2 Il.

The invention relates to a device for slowing the movement of rail vehicles and, in particular, to composite blocks of a rail vehicle.

Known commercially available composite brake pad railway vehicle, consisting of a solid metal frame and priparkovannogo to him of the friction element is made of Associacao material containing oxide, and graphite [1]

The closest in technical essence to the invention is brake pad containing mesh-wire frame with preferowanym to him frictional element [2]

The problem solved by this invention is to increase the reliability of the brake pads by increasing its wear resistance at high vibration strength.

The essential features that characterize the invention, are:

a) in common with the prototype mesh-wire frame, a friction element, reformovanii to the frame;

b) distinctive features of the prototype of the friction element includes a layer Associacao material containing carbon black and barite concentrate and equipped with an additional layer of Associacao material containing oxide and graphite. This layer preferowan to the first layer, and its thickness greater than the thickness of the first layer.

Creatures of the railway vehicle, in Fig. 2 General view of the mentioned brake pads in axonometry.

Composite brake pad rail vehicle consists of a mesh-wire frame 1, priparkovannogo to it a layer 2 of Associacao material containing barite concentrate and carbon technical, layer 3 of Associacao material containing oxide and graphite. 3 layer material preferowan to the layer 2. The thickness of the layer 3 of material is approximately 2/3 of the thickness of the friction element, i.e. greater than the thickness of the layer 2. This is necessary because the layer 3 is the main working element pads, interacting with the surface of the wheel.

The production of the composite brake pads by means of pressing in the mold. For this, the mold is formed by a layer 3 of Associacao material containing oxide and graphite, which is filled approximately 2/3 of the mold, and then create a layer 2 of Associacao material containing barite concentrate and carbon technical, which is filled approximately 1/3 of the mold, then placed mesh workpiece with a wire armature, forming a mesh-wire frame 1, and proizvoditelyami design has as high vibration strength and increased wear resistance and low damage wheelset wheelset, i.e. it combines previously incompatible dignity. This is achieved due to the fact that the layer 2 Associacao material containing barite concentrate and carbon technical, having elasticity, became a link between the mesh-wire frame, providing a high vibration resistance, and a layer 3 of Associacao material containing oxide and graphite, providing due to good thermal conductivity, high wear resistance. Without the intermediate layer 2 reliable connection of the frame 1 with the material constituting the layer 3, it is impossible due to the lack of elasticity of the latter.

Sources of information:

1. The technological regulations of mastering the production of composite brake blocks for railway transport of material 328-303", all-Union scientific research and design-technological Institute of the asbestos technical products. 1977 page 1, 2, 3, 4.

2. Auth. mon. USSR N 518403, B 61, H 7/02, 1975

Composite brake pad railway vehicle containing mesh-wire frame and friction to the frame, containing carbon black and barite concentrate, and an additional layer Associacao material containing oxide and graphite, reformovanii to the first layer, the thickness of the additional layer is greater than the thickness of the first layer.

 

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