Brake disk

FIELD: mechanical engineering; vehicle multiple-disk brakes.

SUBSTANCE: proposed brake disk contains friction member made of carbon composition with rectangular slots uniformly spaced over circumference in each of which two metal U-shaped load-bearing clamp-like inserts are fitted. Each such clamp engages by walls with side surface of slot and end face surfaces of friction member, being secured on disk by rivets. At least two vertical cuts pointed to each other and displaced relative to each other are made in each clamp on walls in contact with end face surfaces of friction member. Cuts are made to provide elastic deformation of clamp and its mounting on friction member with preload to guarantee locking of clamp to prevent its turning relative to axis of rivet.

EFFECT: improved reliability and increased service life of disk owing to prevention of destruction of friction member made of monocarbon under action of thermal, power and vibration loads.

3 dwg

 

The invention relates to the field of engineering and is intended for use in a multi-disc brakes for the wheels of vehicles, mainly in the wheels used on the objects of the aircraft.

Known brake disc containing friction element made of composite material based on carbon, on the peripheral surface of which is made evenly spaced around the circumference of the rectangular grooves, and are installed in slots power metal inserts in the form of two U-shaped brackets connected intermediate plate used to fix the brackets from spread around rivets, by which they are secured to the friction element (see RF patent №2196261, F 16 D 65/12).

A disadvantage of the known designs is the lack of reliability of the brake disk vsledstvii possible failure of the friction element from affecting thermal loads, vibration and power of nature arising in the process of planting mileage object with braking. This is because the intermediate plate is heated during braking to a temperature of about 600-700°C extends in the horizontal direction, creating a significant strain on the composite material of the friction element in excess of e is of acceptable mechanical characteristics, that can lead to the destruction of the friction element of the brake disc. In addition, the intermediate plate, due to the mobility of the joints in vertical and horizontal directions, does not provide a reliable fixing of the U-shaped bracket against rotation relative to the rivet from the power loads and vibration, which may also lead to the destruction of the friction element and the brake disc as a whole.

A positive result from the use of the proposed technical solutions, translates into increased operational reliability and service life of the disk due to unloading of the friction element from thermal loads, power and vibration problems that arise in the process of braking of the vehicle.

This result is achieved in that the brake disk containing friction element carbon composition with rectangular grooves on the peripheral surface and mounted in the slots for two power metal liner in the form of U-shaped brackets, each of which is fixed on the drive rivet, on the walls of the U-shaped brackets, which are in contact with end surfaces of the friction element is provided at least two vertical, oppositely directed and are displaced relative to each other by the slits made with the possibility of a SC is the be elastic deformation and its installation preload, ensure the fixation of the brackets from the pivot axis of the rivet.

1 shows a partial view of the brake disc in the plan.

Figure 2 - top view.

Figure 3 - elements of the brake disk in the volume.

Disk brake includes a friction element 1 of the carbon composition on the periphery of which are evenly spaced around the circumference is made rectangular grooves 2, in which the preload is set on two power metal liner in the form of U-shaped brackets 3, each of which is in contact with its walls 4 and 5 with the side surface 6 of the groove 2 and the end surfaces 7 of the friction element 1 and fixed on it by a rivet 8. The walls 5 of the U-shaped brackets 3, which are in contact with end surfaces 7 of the friction element 1, made by two displaced relative to each other counter-directed vertical slits 9, providing a U-shaped bracket 3 elastic deformation and its mounting in the groove 2 friktsionnogo element 1 with preload.

During braking of the vehicle, due to the absorption of the kinetic energy of the multi-disc brake, fastest way to learn Italian is heated to temperatures of the order of 600-700°C. If this occurs after each braking thermal loads affect the U-shaped bracket 3, which, due to the elastic strain is I, thanks to made them in the slots 9, significantly reducing the pressure from the linear expansion of the U-shaped brackets 3 on the friction element 1, thereby releasing it from thermal loads, which improves the operational reliability and service life of the brake disk.

The reliability of the U-shaped bracket 3 is determined by the fact that it is mounted in the groove 2 of the friction element 1 with tension, providing preliminary tensile strength in the U-shaped bracket 3. When the temperature is a linear extension of the U-shaped bracket 3, leading to a decrease in preload and lower pre-stress tension U-shaped bracket 3 with the preservation of its elastic properties. In addition, the execution of the power liner in the form of two unrelated U-shaped brackets 3 will reduce the impact force and vibration loads that will also increase the operational reliability of the brake disk.

Brake disc containing friction element carbon composition, on the peripheral surface of which is made evenly spaced around the circumference of the rectangular grooves in which are placed two power metal liner in the form of U-shaped brackets, each of which is in contact with its walls with the side surfaces of the groove and torawarete friction element and fixed to the disc by means of rivets, characterized in that each bracket on the walls in contact with end surfaces of the friction element is provided at least two vertical, oppositely directed and are offset from each other by the slits made with the possibility of a strap of elastic deformation and its mounting on the friction element preload ensuring the fixation of the brackets from the pivot axis of the rivet.



 

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