SU543800A1 - Ratchet mechanism - Google Patents

Description

(54) TYPICAL MECHANISM

one

The invention relates to intermittent rotation mechanisms and can be used in any branch of engineering.

Ratchet mechanisms are known that contain a ratchet wheel, a pawl, and a fsssssing device, made in the form of a latch locking with it and additional links connecting the latch with the drive mechanism ij and 2.

Such mechanisms are complex in design due to the large number of links that fix the ratchet wheel.

Closest to the invention of the ratchet mehash zm, containing a ratchet wheel with a working dog, the carrier on which is placed the axis of the working dog; and locking dog interacting with the ratchet wheel h.

In such a mechanism, fewer links are used to fix the ratchet-wheel. However, it does not provide a sufficient degree of reliability and accuracy of fixation, since fixation is carried out only at the end of the working stroke and the ratchet wheel stand, and when the dog is idling, spontaneous unlocking occurs. In addition to the tag, the ratchet wheel is fixed only in one direction, which can lead to a further rotation of the ratchet wheel by inertia or under the action of a shock: loads arising at the time of stopping.

Ie invention - improving the reliability and accuracy of fixing the ratchet wheel.

This goal is achieved by the fact that the ratchet mechanism is equipped with coping pads placed on the locking paw, located on the carrier and radially spring-loaded ratchet wheel with a fork and rollers mounted on it interacting with the coarse pad, and the locking shape of the pawl is made to fit teeth of the ratchet wheel.

FIG. 1 shows a ratchet overall view; in fig. 2 - section A-A on fgsg. one; Fig. 3 shows the locking dog when the wheel is running.

Claims (3)

The ratchet mechanism contains a ratchet wheel 1 mounted on the shaft 2, freely mounted on the TDM and the shaft of the carrier 3, which consists of two parts, covering the hull kg kggsgs. On the carrier it is installed. &Amp; pivotally rotatable around axis 4 so: a 5. With it against the false side of the ratchet wheel on support 6, the locking pawl 7 is hingedly mounted on the sides of which there are fixed copier marks .iia.oKjj 8j and k:; phap wheel, groove 9j is made, the shape of which corresponds to the shape of the teeth 10 of the ratchet wheel. At the end of the carrier, a cup ll is fixed in which a spring-loaded plug 12c is fixed with two rollers 13 Work 5 and fixed 7 paw dogs /; come to the ratchet wheel by springs 14 and 15. The carrier takes the swinging motion of the DT drive, capri & . sss: 1C is the crank of the ego, rocker or other N-iexaHHavioB (no drawing shown). A working dog, swinging along with the carrier, makes clockwise movement with CE:) a vigorous move that lasts until the dog engages with the next eubrum: the ratchet wheel, then the ratchet wheel, and consequently, the shaft turns to a certain corner. . At the same time, during the free code of the working dog code 5, rollers 13 forks 1 2-for bevels on the copyright: 1}. 8, remove the locking dog 7 from: the storage wheel 1, and during further progress, roll over to the flat part of the hold Ь bc | 1 from its s t-ek position until the end of the working drive, and the drive stroke, at the end of the turn, the work dog 5 stops. drinking, and locking dog 7 under CTSiieiv; circle 15 jumps off the rolls J.3 and, pressing on the ratchet wheel, s, and with the groove 9 grabs the next tooth 10, rigidly locking the ratchet wheel. During the reverse movement of the drive mechanism, the working pawl 5 rises and passes over the next tooth 10 of the ratchet wheel, and the rollers 13 slide along the bevel on the outside of the copier pads 8, creating an additional force on the locking pawl 7 at the end of the return stroke. the rollers 13 jump off the lugs 8, releasing the locking pawl 7. The cycle repeats further. Formula of the invention. The ratchet mechanism containing the ratchet wheel with the working pawl, the carrier on which the working axis is located her dog and fixed skinny dog interacting with a ratchet wheel, characterized in that, in order to increase reliability and accuracy of fixation, it is equipped with coping pads placed on the locking dog and located on the radial-spring-loaded ratchet wheel with a fork and mounted on it the rollers interacting with the copier plates, and on the fix to the lean dog there is a groove, the shape of which corresponds to the shape of the teeth of the ratchet wheel. Sources of information taken into account in the examination: 1. USSR author's certificate number 214986, M. G 16 N 29/02, 1966, 2. USSR Author's Certificate No. 366290, M, R16, H 27/04, 1970. 3.Artobolevsky I.I. Mechanisms in modern technology, TP, I., Science, p. 668, fig. 806 (prototype). four 1 // .2 / Fig.Z