SU1200021A1 - Torque-limiting clutch - Google Patents

Abstract

SAFETY iUFTA, containing concentrically located leading and driven half couplings, the elements of their power engagement and disconnecting unit, which, in order to expand the operational capabilities by providing an indication; direction of rotation at. automatic shutdown of the engine. Equipped with an optional opener node, each disconnection unit is complete in the form of a ring connected to the master and driven coupling half by means of a ratchet mechanism containing a hook fixed on the inner surface of the leading half coupling and the dogs themselves that are respectively, in engagement with the outer rings of the outer rings and the driven half coupling and the teeth directed in opposite directions, as well as in the form of two end teeth, and installed in the leading coupling half with the possibility of Switches of bodies of (/) rolling, spring-loaded to holes made on the outer surface of the rings.

Description

The invention relates to components and components that provide protection for mechanisms against overloads and can be used most effectively in instrument making.

The purpose of the invention is to provide a coupling of the properties of the indication of the direction of rotation at the time of actuation,

Fig 1 shows the safety clutch, a cut; in FIG. 2 a section A-A in FIG. 1 in FIG. 3 section bb in fig. t.

The safety coupling contains a lead (half coupling half 1 with holes on the inner or hydraulic surface and a driven half coupling 2 provided with radial holes in which springs 3 and balls 4 are placed. the surfaces of the coupling half 1 and 2 are set to 5 and 5

6. Each of the rings 5 and 6 has the outer surface of the teeth of the opposite direction and the hole, and in the hollows of the inner surface of each of them are fixed dogs.

7 and 8, oriented in azimuth in opposite directions. The leading coupling half 1 has radial holes in front of the wells of rings 5 and 6

and cavities on the inner surface

8 of these cavities are fixed dogs

9 and 10, also oriented in azimuth in opposite directions, and balls 11 and 12 are mounted in the radial holes, pressed against the surface of the wells by plate springs 13 and 14. Switches 15 and 16 are installed in the planes of the balls and springs. Besides , driven by the coupling half 2 is provided with teeth on the outer surface under the pawl 7.

Safety clutch works as follows.

When the load is loaded, the coupling half 2 stops.

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The leading coupling half 1, breaking the force of the springs 3, pushes the balls 4 and its holes into the radial holes of the coupling half 2 and continues

5 rotate.

Stopping the ring 6 leads to the ejection of the ball 11 from the hole on its cylindrical surface and. under the influence of spring lift

10 13. Spring 13 with further rotation of the coupling half 1 acts on the pusher of the switch 15, which, having triggered, relieves the supply voltage from the engine and simultaneously releases

15 gives a signal corresponding to a given direction of rotation. Because ; the ring 5 is rotated along with the coupling half 1, then the ball 12 is not ejected and the switch

20 16 does not work.

If the clutch rotated counterclockwise before the operation, then it will continue with the coupling half 1

25 | rotation of the ring 6, fascinated by dogs; which 10. Ring 5 at the same time stops JTaK as it is interlocked by dog 8 with the coupling half 2. Stopping ring 5 leads to the ball being pushed out

30 12 of its well and the rise of the spring 14, which, upon further rotation, acts on the pusher of the switch 16 .. The latter, having triggered, removes the supply voltage from the engine and the output gives a signal corresponding to this direction of rotation. Since the ring 6 and the half coupling 1 rotate as one piece, the ball is ejected. 11 does not happen and switch 15 when

turning counterclockwise does not work.

Safety clutch for comp. with the known, provides 45 not only the automatic shutdown of the electric motor, but also the automatic signaling of the direction of rotation when the drive is reversing at the moment of the coupling actuation.

Claims (1)

A SAFETY COUPLING, containing the leading and driven coupling halves co-centered, the elements of their power engagement and the disconnection unit, is that in order to expand operational capabilities by providing an indication of the direction of rotation at. automatic shutdown of the engine, it is equipped with an additional shutdown unit, each shutdown unit is made in the form of a ring connected to the leading and driven half-couplings by means of a ratchet mechanism containing the dogs mounted on the inner surface of the leading half-coupling and the rings themselves, respectively engaged with external ones the surfaces of the rings and the driven half coupling and teeth directed in opposite directions, as well as in the form of two limit switches and installed in the leading half coupling with possibility of interaction with the rolling element switches, spring loaded vypoli valuable to the outer surface of the wells of the rings.