SU517720A1 - Safety coupling - Google Patents

Description

one

The invention relates to mechanical engineering, in particular, to devices designed to protect machinery and mechanisms from overloads.

The known safety clutch contains and two concentrically mounted coupling halves, in the holes of one of which are adjustable springs and rolling elements, pressed against the holes made on the cylindrical surface of the other half-coupling perpendicular to the axis of the holes. The coupling axis is perpendicular to the axis of the hole for the spring-loaded ball. However, in the well-known coupling, when transmitting considerable steepness of w, their moments due to the large dimensions of the covering of the coupling half, its inertness increases and the load capacity of the coupling decreases.

In order to increase the load capacity in the proposed coupling, the axis of each hole for the spring-loaded rolling body is located at an acute angle to the axis of the coupling, and the surface of the other coupling half, having holes, is made conical.

FIG. 1 shows the described coupling, a longitudinal section; in fig. 2 is a section along A-A in FIG. one.

The coupling consists of internal 1 and external 2 half couplings. The outer coupling half can be made combined, for example, with

pulley. The inner side of the pulley is made at a certain angle to the axis of the coupling. There are holes in the crown. Viutrenn Iol coupling has holes located under

an acute angle to the axis of the coupling, in which spring-loaded balls 3 are located, which fall into the holes of the outer coupling half and ensure coupling of the coupling halves. Screw 4 regulate the force of the spring 5, acting through the insert 6 on the ball. The locknut 7 protects the screw from loosening. The grooves of the coupling half in cross section have the shape of a segment, with the groove radius larger than the ball radius.

The design of the described coupling allows the balls to be positioned at the greatest distance from the axis of the coupling, which allows, while maintaining the dimensions of the coupling, to transmit much greater torque. The outer half-coupling is mounted on the inside on the bearing 8. When overloaded, the balls 3 are squeezed out of the holes, while the springs are compressed and the clutch works - slips.

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Claims (1)

Invention Formula Safety clutch containing two concentric mounted coupling halves, in 30 holes of one of which are placed pe3 hoisted springs and rolling bodies, pressed against the holes made on the surface of the other half-coupling perpendicular to the axis of the holes, in order to increase the load capacity, the axis of each hole for the spring-loaded rolling body is at an acute angle to the axis of rotation of the coupling, and the surface of the other coupling half, having holes, is made conical.