CS226617B1 - Claw clutch - Google Patents

Description

(54) Clutch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear clutch for transmitting torque with the possibility of engaging and disengaging the clutch during operation and with the possibility of disengaging at full load.

The prior art tooth clutches are filled by axial displacement of one part of the clutch. The torque transmitted by the straight-toothed clutches prevents the clutch from slipping out of engagement and therefore cannot be used where it is necessary to disengage the clutch when retracted. Engaging these couplings under load requires an auxiliary friction clutch to synchronize the speed.

Friction clutches are used to transmit torque with on / off switching under load, which require a relatively large control force relative to the torque transmitted.

These drawbacks of the clutch are eliminated by the clutch according to the invention, which is based on the radial movement of the teeth, controlled by means of sliding wedges located in the clutch driving part, controlled by a substantially lesser force relative to the torque transmitted by the clutch. Wide recesses - tooth gaps - are formed in the drive portion of the coupling along its inner circumferential periphery to eject moving teeth from the drive portion of the coupling. The shape of the tooth gaps is selected such that the circumferential force of the torque transmitted by the clutch acts on the teeth by its component also in a radial direction so that when the wedge-acting control force is released, the clutch.

To undesirably slide the sliding teeth into engagement due to centrifugal force, the sliding teeth are inserted in the drive clutch housing by springs. These springs also disengage the clutch, even if the driven part of the clutch is not retracted.

The clutch can be used wherever the speed and load at the time of engagement are low, eventually gradual, and at the time of disengagement, both the speed and load can be arbitrary, even maximum.

In case of excessive wear on the engagement edges, it is not necessary to replace the entire clutch, but only replace the individual teeth.

A typical example of the use of this clutch is for winches operated directly or remotely.

In the accompanying drawing, an example of a reel coupling embodiment is shown in FIG. 1 is a vertical section and FIG. 2 is a plan view in the direction A-A of FIG. First

In the drive part of the coupling 2 there are rectilinear grooves for the wedges 2 and sliding teeth 2.

The clamping force acting on the sliding sleeve 4 with the wedges 2 pushes the sliding teeth 2 into the tooth gaps 2 ^{in the} drive part of the fixed-tooth coupling part 6.

The engagement portion of the teeth 2, Z is angled so that the engagement surface of the teeth for torque transmission simultaneously distributes a portion of the circumferential force in the radial direction of the clutch which, when exceeded, causes the sliding teeth 2 to be pushed back into the grooves in the drive body 2.

Claims (2)

OBJECT OF THE INVENTION The toothed clutch consisting of a drive and a drive part is characterized in that the radially displaceable teeth (3) in the grooves of the drive part are inserted into the tooth gaps (5) by means of a wedge sleeve (4) and supported by solid teeth (7). drive part of the clutch.