SU1439316A1 - Pawl-and-ratchet overrunning clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to convert the reverse movement of shafts in inertia-pulsed 2 3 continuously variable transmissions, starters and torque converters. The goal is to increase the speed and increase the load capacity of the ratchet mechanism. The ratchet mechanism contains a ratchet wheel 1, a clip 2 and mounted in a holder on movable hinge supports of the plate 4. The support unit is made in the form of a set of movable crackers 6 and 7 of trapezoidal shape. When the ratchet wheel 1 is rotated, the plates 4 contact with the teeth and move the pivot bearings 5 by self-aligning the crackers b and 7 to ensure uniform contact of all the planes; Stein 4 with ratchet wheel 3y6bjfMH, 1. about 1 Il. from 00 to 00 f

Description

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The invention relates to mechanical engineering and can be used in automatic continuously variable pulse transmissions, starters, torque converters, vibration drives and other heavy duty drive machines.

The purpose of the invention is to increase the speed and increase the load capacity of the mechanism.

The drawing shows a ratchet freewheel.

The free-wheel ratchet mechanism contains a ratchet wheel 1, a clip 2 with an annular groove 3 mounted

in the holder plate 4, in contact with the teeth of the ratchet wheel, movable hinge supports 5, on which the axes of the plates 4 are located, and the plate support assembly arranged in the annular groove 3, made in the form of a set of circumferentially rigid traps of cross-section 6 Movably mating with each other, with the yoke and the hinged supports 5 o. The crackers 6 mate with the cylindrical surface of the yoke 2, and the crackers 7 with the hinge supports 5 and are interconnected through each other.

The crackers 7 are spring-loaded through the hinged 30 in the cage on the movable hinge-tooth of the ratchet wheel to move before contact with them. As a result, a reliable hard

the period of activation of the mechanism and increases the level of its permissible loading. At the same time, the impact of the elastic elements 8 through the hinged supports 5 and crackers 6 and 7 on the holder 2 eliminates gaps in their mates, which speeds up the speed of the mechanism, and also keeps the crackers 7 from shifting c. swivel bearings 5,

The invention provides an increase in the speed of the mechanism, since no time is required for switching on the mechanism for elastic deformations of the supporting elements of the plates, and an increase in the load capacity of the mechanism due to the simultaneous reliable closing of all the plates among themselves through hard crackers with their loading on compression.

Claims (1)

Ratchet free wheel mechanism containing concentrically arranged ratchet wheel, clip, set the supports 5 by means of elastic elements 8 in the direction from the center of the mechanism, which are closed between themselves through the hinged supports 5 and the crackers 6 and 7. Ratchet freewheel works as follows. Under the action of a torque on the ratchet wheel 1, the plates 4, which are in contact with the teeth of the ratchet wheel 1, move the hinge supports 5, which move the crackers 7 in the radial direction, the latter move the crackers 6 in the circumferential direction, while the crackers 7 also move to the circumferential direction, which forces the plates 4 to not come into contact with The plate supports and the plate support assembly, characterized in that, in order to improve performance and increase the load capacity, the support assembly is shown as a set of circumferential trapezoidal forodin crackers in contact with its large bases with the inner surface of the sleeve, half of the crackers in contact with its large bases with hinged bearings and spring together with the supports in the direction of the sleeve and the side surfaces of all the crackers are in contact with each other.