SU1590740A1 - Safety clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to automatically engage and disengage a clutch during overloads. The clutch contains a leading 1 and a driven 6 half coupling, covered by the clip 11, on the inner surface of which there are longitudinal grooves for the balls. The balls are located in the radial holes of the half couplings. In the leading coupling half, a mechanism for fixing the engaged position is mounted. It consists of inertial loads in the form of two shoulders 3, in contact with the rod 4 and the spring-loaded pusher 8. When the torque reaches the limit, the balls 7 move out of the grooves on the yoke 11 and act on the pusher 8. The pusher 8 and the control rod 4 move to the right . The movement stops when the balls hit the bore of the control rod 4. The pusher 8 returns to its original position under the influence of the spring 9. The leading coupling half 1 is disconnected from the driven coupling half 6. 4 Il.

Description

3

The invention relates to mechanical engineering and can be used to automatically engage and disengage the clutch during overloads.

The aim of the invention is to increase the reliability of the coupling during overloads. In Fig. 1, a safety clutch with coupled coupling halves is shown in Fig. 2 — a device with uncoupled coupling halves; figure 3 - section aa in figure 1; figure 4 - section bb in figure 2.

The safety clutch contains a leading coupling half, in which radial holes for balls 2 are made. In the leading coupling half there is mounted a locking mechanism for the engaged position, states of inertial loads in the form of two-arm levers 3 hinged on the leading palumuft, one of the arms of levers is in contact with the end face of the control rod 4 located in the central hole of the leading half / ft a / 1; others are connected to each other by a tension spring 5. In addition, the device contains a driven half coupling 6, also having radial ends.

move from the groove to the casing 11, act on the pusher 8, compress the spring 9 and move the pusher 8 and the control rod 4 to the right until the groove of the control rod 4 is located opposite the balls 2. In this position, the balls 2 move out of the groove. In the sleeves 11, the groove of the control rod 4 and the pusher 8 under the influence of the spring 9 returns to the initial position (Fig. 2). The rotating drive coupling half 1 is disconnected from the driven coupling half 6.

To clutch the coupling half, it is necessary to stop the leading coupling half 1 or reduce the frequency of its rotation to the established one, when the force of the core 5 exceeds the inertia force of the racces 3, then separate coupling again occurs. The limiting torque transmitted by the leading coupling half 1 is adjusted by pressing the rod 9 with the nut 10.

The positive technical and economic effect of using the clutch is as follows. Automatic coupling and uncoupling of the coupling halves are produced due to the presence of the ova

under the balls 7. The driven half coupling 6 has a central hole in which the pusher 8 is located, spring-loaded axially relative to the driven coupling half by the spring 9, which is pressed by the nut 10. The driving and driven coupling half is covered by the outer diameter, meters 11, on the inner surface of which is made of the longitudinal grooves B.

The clutch works as follows.

If there is no rotation or when the frequency of rotation of the leading half of the gland 1 is set slightly, when the force of the spring 5 exceeds the inertial forces, the levers 3 act on the upper arm of the rod 4 and move it to the left, all the way to the pusher 8. In the cage 11 (figure 1), the coupling of the leading coupling half 1 occurs, with the driven coupling half 6.

When the master 1 and the slave 6 rotate together, when the inertial forces of the races 3 exceed the spring 5 force, the growl: g 3 diverges, their effect on the control rod 4 stops. Upon reaching the limit value transmitted by the drive torque of 1 torque clutch, balls 7

Claims (1)

a cup with its longitudinal grooves, which is spring-loaded along the axis, the push-rod, which periodically interacts with the control rod, with which inertial loads periodically interact. In doing so, with the rotation of the driving half of the clutch, the slave shuts off, stands, and its parts are less subject to wear. Invention Formula A safety clutch containing a driving and driven half coupling, a control rod with a tapered section, located in the central hole of the driving coupling half, coupling elements placed in radial grooves made in the driving coupling half, with the ability to interact with the longitudinal grooves on the connecting element, in order to increase reliability, it is equipped with a centrifugal mechanism for locking the on position, a yoke with longitudinal grooves made on its inner surface, driven by half coupling and made in the form of a hub with radial grooves, balls installed in them, spring-loaded relative to the hub of the pusher with the surface that presses the balls to the grooves of the cage and the driven coupling half located in the central hole with the possibility of interaction with the rod, the latter is made with an annular groove coupled to the conical section, the centrifugal mechanism is fixed 8 W 3 / I- / I aa.J The connected position consists of inertial loads in the form of double-arm rachagi, hinged i on the leading half-coupling, with one of the shoulders of the rachagas in contact with the rod end, and the others are connected to each other by an anti-spring. IG 6-6 Ud.