SU1395881A1 - Link-lever mechanism with elastic link - Google Patents

Abstract

The invention relates to mechanisms of an articulated parallelogram with an elastic link and can be used, in particular, in devices with an automatic reversal, / ... stroke of the working member. The purpose of the invention is to improve the speed by increasing the rigidity of the elastic link. The elastic link. 5 is pre-deformed and secured with its hinges E and F in the grooves 6 of the rocker arms 2 and 3 so that it is not parallel to the connecting rod 4 and the column 1 o. At the same time, the rocker arms 2 and 3 occupy some initial position at which the tension of the elastic element 5 will be minimal. When acting on any of the rockers 2 and 3, the mechanism automatically returns to its original position, 1 Cp. f-ly 3 Il.

Description

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The invention relates to mechanical engineering, in particular, to mechanisms of hinged-lever parallels FM, and can be used in devices with automatic retraction of the working body.

The distance of the invention is to increase the speed of the mechanism by increasing the rigidity of the elastic link.

Fig, 1 shows a constructive scheme of the mechanism with one-sided arrangement of the connecting rod and the elastic link; Fig.2 is a structural diagram of a mechanism with rocker arms in the form of two-arm levers; fig.Z - kinematic scheme of the mechanism.

The mechanism contains a parallelogram of hinges, formed by stance 1, rocker arms 2 and 3 and connecting rod 4, and elastically: e link 5, hinged at their ends with rocker ends 2 and 3 In another embodiment, the rocker arms 2 and 3 are in the form of two shoulders levers, and the connecting rod 4 and the elastic link 5 are installed at mutually opposite ends of the rocker arms 2 and 3c For adjustments | and the interrelationships of the acting forces, all the hinges of the mechanism are made. With the possibility of independent rearrangement and fixation in the pack of 6 o.

The mechanism works in the same way.

Previously, deform the elastic element 5 to a predetermined value and fix its hinges E and F in the slots

6 rocker arms 2 and -3 so that the link 5 is not parallel to the connecting rod 4 and, accordingly, the rack 1. Depending

from the magnitude of the deformation of the elastic link 5 and the magnitude of its non-parallelism, the connecting rod 4 of the rocker arms 2 and 3, remaining parallel, will occupy some initial position at which the length of the elastic link 5 will be minimal. When any of the rocker arms 2 and 3 oscillates from the drive (not shown) to either side of the rocker arms 2 and 3, they will return to their original position when they are affected by the drive. Ratio of forces acting in the mechanism as well as the speed of the mechanism to return to its original position regulate as the stiffness and deformation of the link 5, and the permutation of the hinges in the grooves 6.

Claims (1)

1. A hinged-lever mechanism with an elastic link containing a hinged-parallelogram formed by rack, two mounted on it rocker arms and a connecting rod articulated with rocker arms, and kinematically connected with rocker arms elastically: an link that differs in that, in order to increase speed, the elastic link is hinged at its ends with the ends of the rocker arms, and all the hinges are installed with the possibility of independent fixation and fixation 2, The mechanism according to claim 1, about the aphid h and u and y with the fact that the rocker arms are made in the form of two shoulders, and the connecting rod and the elastic link are installed respectively at their mutually opposite ends. / / and V fi ki / AND AT four 2 Have cfJue.S