Friction lining

FIELD: transport.

SUBSTANCE: proposed friction facing is made from polymer friction material and features shape of different-thickness cylindrical shell ring part, the latter being formed by misaligned cylindrical surfaces with parallel axes of rotation and flat lateral surfaces. Lateral layer of thin edge is made with chamfer. Said facing has holes to receive rivets. Said holes arranged on thin edge of facing are partly located on beveling.

EFFECT: improved operating properties.

2 dwg

 

The invention relates to friction products, namely the containing hole rivet pads, drum brakes of vehicles, in particular trucks.

Analogous to the claimed invention is a friction plate containing holes for rivets (see Reference science in tribology. Science in tribology-friction, friction and coupling devices. Methods and means of tribological tests. Volume 3, M.: "mechanical engineering", 1992. Warsaw, on, 1992, s). The essential features of the analogue pad, hole rivet" match the essential features of the claimed invention.

The disadvantage of analog is the reduction in the reliability and performance of this product due to the lack of side bevels.

Analogous to the claimed invention is a friction plate containing holes for rivets and shaped parts ethnotaxonomy cylindrical shell formed by non-axial cylindrical surfaces with parallel axes of rotation and flat side surfaces (see RF patent №77925, IPC F16D 65/08 (2006.01), 2008). The essential features of the analogue pad, hole rivet, form part ethnotaxonomy shell formed by non-axial cylindrical surfaces with parallel axes of rotation and flat lateral surfaces" ppsr is to give the essential features of the claimed invention.

The disadvantage of analogue is also a reduction in the reliability and performance of this product due to the lack of slanted side surfaces.

The prototype of the claimed invention is a friction plate made of polymeric friction of the composite shaped part ethnotaxonomy cylindrical shell formed by non-axial cylindrical surfaces with parallel axes of rotation and flat lateral surfaces beveled (see RF patent №2230240, IPC7F16D 69/02, 2004). The essential features of the prototype "strap, made of polymer friction of the composite shaped part ethnotaxonomy cylindrical shell formed by non-axial cylindrical surfaces with parallel axes of rotation and flat lateral surfaces, bevel coincide with the essential features of the claimed invention.

The disadvantage of the prototype is the degradation of the performance due to the absence in the plate holes for the rivets that must be performed during installation of the lining to the metal strip in a non-production environment, which can lead to the destruction during the operation of the pads (on the outer surface of the shell in the area of the holes on the thin end of the lining due to the weakening of the walls of the hole from the side of the bevel.

The task, which is aimed by the invention is improved performance pads by reducing the possibility of the destruction of part of the lining in the area of the holes on the thin end through the elimination of weakened zones in the holes in the thin end of the overlay.

To achieve the technical result in the friction plate of the friction polymer composite shaped part ethnotaxonomy cylindrical shell formed by non-axial cylindrical surfaces with parallel axes of rotation and flat lateral surfaces, where the side surface of the thin edges of the lining are made with bevel, additionally made the holes for the rivets and holes in the thin edge of the lining, placed part of its surface on the bevel.

The essential features of the claimed invention "made the holes for the rivets and holes in the thin edge of the lining, placed part of its surface on the bevel are different from the characteristics of the prototype.

Figure 1 shows the inventive molding. Figure 2 presents a view of the lining side.

The cover plate is made of polymer friction of the composite and is part ethnotaxonomy cylindrical shells (variable thickness), with two (or Tr is me, or more rows of holes for rivets. The overlay due to the variable thickness H has a thin edge 1 and a thick edge 2. On the thin edge of the executed bevel 3. The pad is made holes for rivets, the orifices 4, performed on the thin end plates, placed in such a way that the part L of their area was accounted for by Eqs. Part of the area falling on the bevel may be either less than, or equal to, or more than half of the total area of the respective openings.

A specific example of the invention can serve as a drum brake lining truck, whose size L is approximately 30% of the total area of each hole of the thin end of the overlay.

Be fabricated plate may known methods, with the holes in the overlay are drilling.

The execution of the overlay with the specified coordinate characteristics allows us to exclude the products of the weakest, from the viewpoint of mechanical strength, the working parts of the lining - side pads between the walls of the holes and the surface of the bevel, as those most susceptible to destruction during the operation, the result may deteriorate and other parts of the overlay. The result is improved performance pads.

A friction plate made of polymeric friction whom is the osita and shaped parts ethnotaxonomy cylindrical shell, educated non-axial cylindrical surfaces with parallel axes of rotation and flat lateral surfaces, and the side surface of the thin edges of the lining are made with bevel, characterized in that the cover plate is made holes for rivets and holes in the thin edge of the lining, placed part of its surface on the bevel.



 

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