SU709864A1 - Resilient safety clutch - Google Patents

Description

(54) ELASTIC SAFETY CLUTCH

one

The invention relates to mechanical engineering and can be used in various mechanisms for connecting shafts under conditions of increased mixing of the latter and limiting the magnitude of the transmitted torque.

A known elastic safety coupling comprises a flanged coupling half, on which a pin is mounted with a plastic roller freely mounted on it, interacting with the bent end of a spring placed longitudinally on the other coupling half and fixed loosely on the sleeve, displaced along the axis of rotation Ij.

Closest to the proposed technical essence and the achieved effect is an elastic sheathing coupling comprising flange drive and driven half-couplings connected by elastic elements in the form of cylindrical springs installed in the longitudinal holes of the driven half of the coupling. One ends of the springs are located in the BeaoNTOft annular groove of the coupling half, while the other ends of the spring rest on the pins attached to the flange of the driving coupling half 2J.

However, in known couplings it is not possible to provide lubrication of the rubbing surfaces at the points of contact of the pins to the ends of the springs, since the lubricant is thrown away by centrifugal force. As a result of dry friction of parts, their new wear is observed.

In addition, as the transmission torque increases above the allowable values, the ends of the springs jump off the bars and create an unpleasant crack, and the blows of the ends of the springs on the pins quickly wear the latter.

The purpose of the invention is to increase the reliability and durability of the coupling and reduce noise.

Claims (2)

This goal is achieved by the fact that in the present invention, on the flange of the water half coupling, there are deaf radial grooves, an annular groove. And the sloping yiocT37 ki connecting them with each other; filled with grease. Fig. 1 shows the coupling described, longitudinal section: in Fig. 2, the same section A-A in Fig. 1 in Fig. 3 is a section B-B in Fig. 2 in Fig. 4 - section B-B in fig.Z. The clutch contains flange leading 1 and driven 2 half coupling connected by torsion springs 3, Flange 4 leading half coupling 1 has deaf radial grooves 5 and annular groove 6. The number of springs 3 corresponds to the number of deaf radial paeov 5 connected to the annular groove 6 smoothly 1 sloped 7. The radial grooves 5 and the annular groove 6 are filled with grease. The ends 8 of the springs 3 are placed in the radial grooves 5 of the flange 4 of the leading coupling half 1. The springs 3 are located in the longitudinal holes 9 and are installed with the ends H in the annular groove 11 of the coupling half 2, the coupling works as follows. During rotation of the leading coupling half 1, the latter acts on the ends of the 8 springs 3, which lie in the slot grooves 5. The cylindrical torsion springs 3, which accept the force, twist around their axis at an angle proportional to the positive force, and transmit the last coupling half 2 When the shafts are connected by a pre-clutch (this design allows for the neoaxial shafts. When the clutch is connected to non-axial shafts KOSHLE 6, the springs 3 move each radially in the radial groove 5 by a double offset. In the proposed coupling, due to the fact that the springs and the leading coupling half occur in a deaf radial groove filled with grease, which is no longer removed by centrifugal force, friction of the P1x parts proceeds into the oil of the 1st bath. This reduces wear on the rubbing surfaces and increases the load capacity of the coupling. When the transmitted torque reaches more than the allowable value, the end 8 of the spring 3 emerges from the groove 5 and is guided by the main inclined section into the annular groove 6, taking the position shown by the dotted line in FIG. 2. Now The leading lead of the pump 1 does not rotate the half-coupling 2, and the ends 8 of the spring 3 slide along the oiled ring groove 6. In this mode, the ends 8 of the spring 3 slip through the radial groove 5, do not hit its bearing surface, do not wear it and do not strong shuma. Thus, the proposed coupling is more durable and reliable, and the load capacity is increased due to the exclusion of dry friction and shock loads, when triggered, which creates a significant change in noise. Claims of the invention The elastic coupling has a flange drive and a driven coupling half connected by elastic elements in the form of cylindrical torsion springs installed at the ends of the driven coupling half with one end, characterized in that in order to increase durability, load capacity and reduce noise, the flange of the leading coupling half is full. deaf radial grooves, an annular groove and inclined smooth sections connecting them to each other, while the free ends of the springs are located in the radial grooves, and the latter and ltseva groove filled with grease. Sources of information taken into consideration during the examination 1. USSR author's certificate N9 477264. cl. F 16 D 7 / GS, 1974. 2.Avtoskoe certificate of the USSR № 4O8072, cl. F16 B 7 / OO, 1972 (prototype). P g. .S b 5 - b U /////////// k