SU1691623A1 - Free-wheel clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to automatically connect and disconnect vertically arranged shafts. The aim of the invention is to increase the reliability of the coupling operation when the shafts are vertical. The coupling includes a semi-coupling (P) with a spiral groove 2 at the end, driven by a F with a blind central hole 7 and groove 8, bled out tangentially to the hole 7 and opposite to the groove 2 and the ball (W) 11, located between the P in the slots 2 and 8 The groove 2 is made with an offset relate The geometry of the coupling axis in the direction of the periphery and the overlap of the groove 2 and the hole 7 are equal to the diameter W 11 When the leading P rotates counterclockwise W II displaced from the geometrical axis P under the action of centrifugal force moves into the groove 8 and further surfaces 5 and 9 slots 2 and 8 are respectively pushed out to the periphery. The clutch is in the working position. When the direction of rotation W II changes, surfaces 4 and 10 of the slots 2 and 8 are pushed out to the original position. W 11 slides along the surface of the opening 7 otaet idling yl 4 W w

Description

fig z

The invention relates to mechanical engineering and can be used in any branch of the national economy for the automatic connection and separation of vertically arranged shafts.

The purpose of the invention is to increase the reliability of the operation of the coupling with the vertical arrangement of the shafts.

FIG. 1 shows the overrunning clutch, general view; in fig. 2 - the mountaineer of the driven half coupling with the groove of the leading coupling placed on it in the idle mode; in fig. 3 shows the interposition of the grooves of the coupling halves at the time of the start of the shaft connection, in the intermediate position and at the time of the complete shaft connection; in fig. 4 - the interposition of the grooves in the partial exit of the ball outside the center hole.

The overrunning clutch consists of a leading coupling half 1, on the end of which there is a spiral-shaped groove 2, made with offset 3 from the geometric axis of the coupling in the direction of the periphery and having an outer 4 and inner 5 curved surfaces, a driven coupling half 6, on the end of which there is a central blind hole 7 , on the tangent to which the groove 8 is made with the curvature of the coupling half leading to the opposite groove and also has an outer 9 and an inner 10 surface.

The ball 11 is placed in the groove of the leading half-half. The master and the knowledge of the half-coupling are installed in the cage 12. The magnitude 13 of the overlap of the groove 2 and the central hole 7 is equal to the diameter of the ball 11

The overrunning clutch operates as follows.

When the leading half-coupling 1 is rotated clockwise (Fig. 2), the ball 11 slides along the surface of the central blind hole 7 and the coupling does not rotate with the floor. the clutch works in idle mode. 11 is located inside the central hole 7 at any position of the groove 2 of the non-thick half-coupling except for the position shown in FIG. 4, when the ball partially extends beyond the central hole, after which the outer surface 4 of the groove-2 is pushed again into the inside of the central hole 7, while the ball 11 without impact comes into contact with the outer surface 9 of the groove 8. since the surface 9 is tangent to the central hole 7 and the ball moves in the radial direction slightly (Fig. 4).

When the leading half-coupling 1 rotates counterclockwise (FIG. 3), the ball 11 under the action of centrifugal force, which also arises when the position is vertical

the shafts, since it is pre-offset from the center position, is pushed into the groove 8 of the driven coupling half. As soon as the ball 11 enters the beginning of this groove, it is then the inner surface 5 of the groove 2 and

centrifugal force is pushed along the groove 8 to its periphery. When the groove 8 reaches the end, the ball 11 presses against the coupling half 6, which begins to rotate, transmitting a torque. The clutch will work in working mode. When changing direction

rotation of the outer surfaces 4 and 9 of the grooves 2 and 8 push the ball 11 into the central hole 7 and the clutch again goes into idle mode.

Thus, the overrunning clutch allows for the transfer of movement between vertically arranged shafts, increasing the reliability of engaging the clutch due to preliminary displacement of the ball from the price; This allows a sufficient centrifugal force to be obtained at a relatively low rotational speed of the drive coupling. In addition, due to the reduction in the length of the groove of the leading coupling half, the cost of its manufacture is less than the half-length of the prototype coupling.

Covering the hole with a groove section at a length equal to the diameter of the ball allows the ball to be pressed against its surface and thereby increase the reliability of the coupling.

Claims (1)

Formula of invention An overrunning clutch containing a driven half coupling with a blind central hole made at its end and a helical groove mated to it, a driving coupling half with a spiraling groove of the opposite half of direction, located on the end face of the butt driven turn coupling, combined grooves, and a yoke covering the ends of the coupling halves, characterized in that, in order to increase the reliability of operation in the vertical position of the connected shafts, the end surface of the groove of the driving half coupling is located adjacent to the coupling axis offset from the specified geometric axis of the coupling in 0 the direction of the periphery, while the amount of overlap of the groove and the central hole is equal to the diameter of the ball. 0 ugps Ј291691 figl