SU547573A1 - Self-braking schA lever-rhombic clutch - Google Patents

Description

one

The invention relates to machine building and can be used in all branches of the national economy to connect the shafts of machines and mechanisms.

And-known couplings for self-braking of kinematic chains of various mechanisms, and containing the leading and driven coupling half with cams and the IS and ZZ brake disc.

However, the reliability of self-locking of such couplings is reduced due to the rapid abrasion of the friction pairs.

The purpose of the invention is to increase the reliability of self-braking.

For this, in the proposed coupling, the linkage system is implemented in the form of two hinged chat rooms and riggers, one ends of which are provided with lugs, and the others are attached to the cups bearing the brake discs, and the bobschki are mounted on pins, which are spring-loaded.

Such a coupling design allows self-braking to transfer forces from the driven link to the brake pads.

FIG. 1 shows a self-braking coupling, in section; in fig. 2 - section AA

in fig. one; in fig. 3 is a section BB in FIG. 1; in fig. 4 is a diagram of the lever system in isometry; in fig. 5 - half coupling in isometric.

The self-arresting shaft lever-rhombic clutch contains coupling halves 1 and 2, which interact with each other through connecting bosses 3. The lever system consisting of levers 4 forms two independent movable articulated arms (Fig. 4). The left and right ends of the four-joints are connected to cTaKaHaN: H

5, which is fixed. brake discs

6.These pads rest against braking.

Claims (3)

into the housing 7 couplings. The levers 4 are interconnected by pins 8, sprung springs 9. Axle displacements of the half coupling are held by spring rings Y. When the leading coupling half 1 rotates under the action of the torque from the engine, the hinges C and D disperse until the bosses 3 are pressed into 2. At the same time, the hinges D and E approach each other, the brake discs 6 move away from the housing 7 of the clutch and it is now possible to transfer the rotation from the driving link to the driven one. When rotating the driven half-coupling 2 under the action of the moment of resistance, the hinges C and D approach each other, and the hinges D and E disperse until the brake discs 6 fall into the housing 7 of the clutch. In this case, the mechanism will self-brake if the angle c6 between the axis of the mechanism and the rod 4 is less than the friction angle of the discs 6 on the housing 7. As the discs 6 rub on the housing of the coupling 7, the D and E hinges will diverge during braking for a longer distance At the same time, the hinges C and D will move closer and the angle of C will become smaller, thereby increasing the reliability of self-braking. Claim 1. Self-braking lever-rhombic 20 clutch, containing drive and driven coupling halves, lever systems and brake discs, characterized in that, in order to increase the reliability of self-braking, the lever system is implemented in the form of two hinged four-wheel links, one end of which is provided with bits. while others are attached to brake-carrying glasses. 2, the coupling according to claim 1, characterized in that, in order to ensure smooth operation of the coupling, the bosses are mounted on pins pulled by springs. Sources of information taken into account in the examination: 1. Author's certificate number 121630, M. Kl. 16 B 51/12, 1958. 2. Author's certificate No. 122374, M. Kl.-; 16 and 51/12, 1958. 3.Turpaev A, I. Self-braking mechanisms. M., Mechanical Engineering, 1966, (Rygl