SU372390A1 - SAFETY CLUTCH - Google Patents

Description

The invention relates to mechanical engineering.

Safety clutches used to protect mechanisms and machines against torque overload are known. Couplings containing the leading coupling half, the driven coupling coupling, in the radial windows of the cylinder, are most widespread; spring loaded rolling bodies are installed in the swarm. These couplings have a complicated adjustment of the magnitude of the transmitted moment and do not allow remote control of the limiting torque, which complicates their operation and eliminates the software control of protective parameters.

The proposed coupling does not have these disadvantages and differs from those known in that in the windows of the driven coupling half, plungers made of magnetic conductive material, covered by an elastic ring casing and rolling rolling bodies, are additionally installed with radially free, and the body is equipped with an electromagnetic coil, the magnetic field of which is directed elastic ring cage, and there is a conical bore in it, which interacts with its inner surface with a provided and freely placed on oh the shaft of the spring-loaded brake half coupling in contact with overloads with the plungers by means of face bevels provided on them.

FIG. 1 depicts the described coupling.

lengthwise cut; in fig. 2 is a cross section along LL in FIG. one.

The clutch contains a leading coupling half 1, made in the form of a shaft, driven by the coupling half 2, made in the form of a clip, plungers 3, rollers 4, springs 5-7, stationary body 8, coil 9, floor at coupling 10, bore 11 and clamp 12. Transmission torque load is carried out by jamming the rollers 4 between the working surfaces of the coupling half 1 and the plungers 3. The latter are kept from moving in the radial direction by the spring 5. When the transmitted torque reaches the limit value and the jamming force of the rollers 4 exceeds the spring pressing force, t rollers, rolling camping on the working surfaces, the transition into the opposite cavity. The clutch is switched off. At the same time, moving in the radial direction, the plungers through the balls resting on the conical surface of the coupling half 10, displace it in the axial direction. The coupling half 10 is connected with a pin to the shaft 11, pressed by the spring 7 and brakes the driven kinematic chain of motion transmission after switching off the clutch.

When you turn on the coil 9 of the electromagnet magnetic circuit formed by the housing 8 and

washer 12 attracts plungers. The force of attraction of the plungers is directed in the same direction as the force of pressure of the rollers on the plunger.