SU1260579A1 - Freewheel wedge mechanism - Google Patents

Description

The invention relates to mechanical engineering and can be used, for example, in pulsed continuously variable transmissions.

The aim of the invention is to increase the load capacity

FIG. 1 shows the proposed mechanism, axial section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The mechanism contains an outer driven yoke 1, an inner leading eccentric 2 with a ring crown 3 and an eccentric groove 4, an intermediate ring 5 with teeth 6. In the casing 1, axles 7 are fixed, on which gears 8 are freely mounted that engage with the eccentric toothed crown and teeth 6 of the intermediate ring. In the eccentric groove 4, a wedge 9 is inserted between the eccentric and the intermediate ring 5, which is pressed against the surfaces of the eccentric and the ring by a spring 10 installed between the wedge 9 and the anvil 11 mounted on the eccentric 2.

The mechanism works as follows.

When turning the leading eccentric 2 counterclockwise, it presses the wedge 9 with the surface of the eccentric undercut 4 and presses it against the intermediate ring 5, tends to turn clockwise under the action of the gears 8. The wedge angle 9 is less than the friction angle on the intermediate ring 5, which prevents relative

0

five

According to the motion of the wedge 9 and the intermediate ring 5. Thus, the eccentric 2, the wedge 9, the intermediate ring 5, and with them the gears 8 and the yoke 1 do not have relative movements, i.e. the whole mechanism rotates as one piece.

When the eccentric 2 is turned clockwise, the wedge 9 is wedged and torque is not transmitted to the clip.

In the proposed freewheel wedge mechanism in a wedged state, the torque is transmitted to the holder 1 by two streams: through the toothed venip 3 eccentric, gear 8 and axle 7, as well as through the eccentric notch 4 of the eccentric 2, wedge 9, intermediate ring 5 with teeth b, gear 8 and axle 7.

The magnitude of the torque transmitted by the second flow with actually performed quantities of the teeth of the crown 3 and the ring 5-4 ... 6) through the wedge and the surfaces in contact with it is - - the total torque. In addition, the remaining part of the torque is transmitted simultaneously through several (three-five) kinematic connections of gears 8 with teeth of the rim 3 and the intermediate ring.

This makes it possible to increase the load capacity of the differential freewheel mechanisms by a factor of 2-3 compared with existing mechanisms with the same dimensions, which are determined mainly by the size of the wedge.

Aa

v- B

f - i. .grieg 3

Compiled by L. Atrushksvich

Editor M. KelemeshTehred I. VeresKorrektor T. Kolb

Order 5208/31 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab., D. / 5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

FREE-WEDGE WEDGE MECHANISM, comprising a concentrically arranged driven cage, a driving eccentric, an intermediate ring with teeth and a wedge relative to the eccentric, characterized in that, in order to increase the load capacity, it is equipped with gears freely mounted on the cage, the eccentric is made with a gear ring and kinematically connected by means of gears to the intermediate ring, and the wedge is located between the intermediate ring and the eccentric. (L about SL FIG. j