Friction disc

 

The invention relates to the field of engineering, namely for friction products, and is intended for use as a friction clutch. The friction plate includes a metal frame with an attached lining. The frame and cover plates with holes, the centers of which are arranged on two concentric circles. Holes placed rivets. The centers of every two adjacent holes located on a circle of larger diameter, are located on one straight line with the center placed between the holes located on a circle of smaller diameter. The technical result is to reduce the possibility of the destruction of the friction disk as a result of pulling of the rivet and the material of the lining, the destruction of the material of the lining in the holes and separation pads. 2 Il.

The invention relates to the field of engineering, namely for friction products such as brake disks, disk brakes of tractors, disks, clutches and other

Analogous to the claimed invention is a friction disk containing the provided holes of the metal frame on which zafiksirovannyh products. M.: Chemistry, 1979, S. 9). The essential features of analogue containing provided with holes metal frame on which is fixed a friction lining” match the essential features of the claimed invention.

The disadvantage of analog is the possibility of destruction of the friction disk, especially in the area of riveted joints, as a result of rupture and separation of the material plates under impact loads during braking at high angular speeds of rotation of the friction disk.

The prototype of the claimed invention is a friction drive comprising a metal frame, with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, friction lining, is also provided with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, while the axis of the respective hole frame and cover plates are the same, and in the holes placed rivets that hold the pads on both sides of the frame (see Reference science in tribology. Science in tribology-friction, friction and coupling devices. Methods and tools tribotechnical the cue frame, with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, friction lining, is also provided with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, while the axis of the respective hole frame and cover plates are the same, and in the holes placed rivets that hold the pads on both sides of the cage” match the essential features of the claimed invention.

The disadvantage of the prototype is the possibility of destruction of the friction disk in the explosion rivets of the friction pads in the areas of rivets, especially when lateral bending a metal frame with lateral shock loads during braking with high angular velocities of rotation of the friction disc, with the subsequent destruction of the material in the zone of holes and margin pads.

The task, which is aimed by the invention, is to reduce the possibility of the destruction of the friction disk as a result of pulling of the rivet and the material of the lining, the destruction of the material of the lining in the holes and separation pads.

For achievement of the I rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, friction lining, is also provided with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, while the axis of the respective hole frame and cover plates are the same, and in the holes placed rivets that hold the pads on both sides of the frame, the centers of every two adjacent holes of the frame and cover plates located on the circumference of the larger diameter, are located on one straight line with the center placed between the holes located on a circle of smaller diameter.

The essential features of the claimed invention, the centers of every two adjacent holes of the frame and cover plates located on the circumference of the larger diameter, are located on one straight line with the center placed between the holes located on a circle of smaller diameter are different from the characteristics of the prototype.

In Fig.1 shows a friction drive. In Fig.2 - cross drive along a-A.

The friction plate comprises a metal frame 1, provided with holes 2, the friction pads 3, with oversteamed. The holes in the frame and the plates are arranged in two rows, with the centers of the holes are placed on concentric circles 6 (concentric circles 6 are the coordinate characteristic, and not a constructive element of the disk), coaxially with the axis of rotation of the disk. Holes sequentially alternated around the circumference of the disk: in the hole on the circle with a large radius should be a hole on the circle with a smaller radius, then the hole on the circle with a large radius, and so on, While the centers of each of the three holes located in the following sequence: the hole on the larger circle, the hole on the smaller circle and the hole on the larger circle is located on one straight line 7 (direct 7 are the coordinate characteristic, and not a constructive element of the disk).

To produce the inventive drive may in a known manner, namely by Prilepko to the metallic frame pads, with combined openings in the frame and plates, they are placed rivets and then are to be riveted.

A specific example of the invention is a disk brake of the tractor MTZ, including metal frame, to which is riveted friction linings. Lining vepoyi fillers. The friction surface of the friction lining may have grooves of different shape and depth. Onlays can be made from billets wound from non-asbestos (for example, glass, glass-wire) and other yarns, coated with a polymer composite-based rubber-resin binder with powder filling.

Manufacture of friction drive with two rows of holes, when the centers of every three adjacent holes are arranged on one line, increases the resistance of the product to lateral bending part of the disk containing the pads, since the rivet holes are in a line of bending. If the holes are not located in the same line of bending, pulling rivets more likely due to the uneven deformation of the material of the lining held on the frame only rivets. This reduces the possibility of separation of the plates and the destruction of the disk when the lateral loads.

Claims

The friction disk containing the metal frame, provided with two rows of holes, the centers of which are located sequentially on two concentric circles, concentric with the axis of rotation of the disk, friction lining, is also provided with two rows of holes, the ka, in this case the axis of rotation of the respective holes of the frame and pads are the same, and in the holes placed rivets that secure the pads on both sides of the frame, characterized in that the centers of every two adjacent holes located on a circle of larger diameter, are located on one straight line with the center placed between the holes located on a circle of smaller diameter.



 

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