SU846848A1 - Flexible slip coupling - Google Patents

Description

This invention relates to mechanical engineering. A known elastic compensating coupling comprising coupling halfs connected by means of a twisted spring j. The disadvantage of such a coupling is that it works only when the scientific research institute rotates in one direction, i.e. in the direction of twisting the coils of the spring and has compensating properties only in the axial direction. Also known is an elastic compensator coupling containing coupling half, connected by an elastic element with springs mounted on it, and an adjusting nut. The elastic element is made in the form of a hollow rubber cylinder reinforced by springs. However, this coupling does not compensate for the angular and axial displacements. Moreover, the design of the coupling does not both bake the operation of all the springs when reversing. Depending on the direction of rotation, either only the right springs or only the left springs work. The purpose of the invention is to improve the elastic compensating properties of the coupling, ensuring the possibility of moment transfer in both directions. The goal is achieved by the fact that in an elastic compensator coupling containing half couplings connected by means of an elastic element to springs of right and left winding and adjustment nut mounted on it, the elastic element is made in the form of an elastic core, with helical grooves under the springs of left and right winding located in the middle part of the core, and in the nut inclined grooves are made, eccentric to its axis, in which the ends of the springs are installed. Nafig 1 shows the coupling, general view; in fig. 2 is a view B in FIG. one; in fig. 3 shows section A-A in FIG. 1. The coupling consists of a leading half coupling 1, having a hub with an external thread, on which a special nut 2 is screwed, equipped with a section 3 with two eccentrically located grooves 4, the bent ends of springs 5 and 6 of differently directed winding, elastic element 7, protective the cap 8 and the driven half coupling 9.

The coupling works as follows.

From the drive shaft (not shown in fig.), The drive sleeve 1 rotates. A special nut 2 screwed on it, in the slots of which the bent ends of springs 5 and 6 of the right and left hand pushes are installed, transmitting torque both to one and the other. . By means of an elastic element: 7, made of an elastic core, for example of polyurethane, rubber, etc. the moment is transmitted to the driven half coupling 9.

When mounting the clutch, the springs 5 and 6 are in a free state on the elastic element, and their bent ends are located in the middle of the grooves of the nut. At the time of start-up, the leading coupling half 1 begins to rotate and nut 2 is screwed on or screwed on, i.e. moves progressively in one direction or another, depending on the direction of rotation of the drive shaft. Since the ends of the springs 5 and 6 are installed in the grooves of the nut 2, the springs will twist - one to the right, and the other. ha - to the left until the x moment of resistance together with the elastic core becomes equal to the torque on the driven shaft. After this, the floor of the coupling begins to rotate. The cap 8 prevents the springs 5 and 6 from jumping out of the grooves of the nut 2.

With axial misalignment of the coupled coupling halves, the springs 5 and 6 undergo a longitudinal deformation. In this case, the pitch of the helical grooves made on the outer surface of the elastic sulfur tube 7 is changed in accordance with the longitudinal deformation of the springs 5 and 6.

Thus, the elastic core and the springs of the right and left windings deform in the direction of the longitudinal axis.

Claims (2)

1.Ivanov E.A. Drive couplings. Mashgiz, M., 1959, p. 96 2. US patent number 3628352, cl. 64-15, 1972, (prototype). View b A-A fig.g Srig.