SU1256960A1 - Safety device - Google Patents

Description

The invention relates to mechanical engineering and can be used to connect the arm of a manipulator with a working body.

The purpose of the invention is to increase reliability while increasing the load capacity.

FIG. 1 shows a safety device, a cut; in fig. 2 is a view A of FIG. one; in fig. 3 is a section BB in FIG. 2

The safety device consists of two coupling halves 1 and 2, concentrically located one relative to the other and connected to each other along cylindrical 3 and end 4 surfaces. In this case, coupling halves 1 and 2 are spring-loaded one relative to another in the axial direction by means of an elastic element 5, for example, a packet Belleville springs. Half coupling 1 is connected with the help of bolts with the arm of a manipulator (not shown), and coupling half 2 is also attached with bolts to the working body (not shown).

On one of the pair of mating cylindrical 3 and end 4 surfaces of coupling half 1 and 2, respectively, toroidal projections are made, for example, coupling half 1 and 2 are connected by means of a toroidal projection 6, made on coupling half 1, and balls 7. A package of belleville springs 5 is closed with a cover 8, which simultaneously secures one end of the rod 9, the latter, the passage through the central hole

10 in the coupling half 2, the other end interacts with the limit switch 11.

The safety device operates as follows.

When the arm moves, the work results in centrifugal force and angular force at the beginning and end of the motion, which act on the coupling half 1. When the centrifugal force exceeds the critical value of coupling half 1 together with the lid 8 and rod 9, and also balls 7 moves away from the coupling half 2, increasing the gap S around the entire perimeter of the contact of the half coupling I with the half coupling 2 compresses the packet of disc springs 5. As a result, the limit switch 11 is turned off. When the angular force exceeds the critical value of coupling half 1 with cover 8 and stem 10 it tends to turn relative to coupling half 1, but thanks to the toroidal lug 6 on coupling half 1, the same torsional moment of coupling half 1 relative to coupling half 2 is maintained regardless of the direction of the angular force . At the same time, in the place of axial contact of the half-coupling 1 with the half-coupling 2, a toroidal protrusion made on the cylindrical surface 3 allows free rotation of the half-coupling 1 relative to the half-coupling 2, ensuring their self-installation without jamming.

Fulfillment of the conditions for self-installation of coupling half 1 relative to coupling half 2 (or vice versa) prevents their relative jamming.

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Compiled by I. Bakulina

Editor I. KasardaTehred I. VeresKorrektor M. Maksimishinets

Order 4870/13 Circulation 1031 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PSP “Patent, Uzhgorod, st. Project, 4

Claims (1)

SAFETY DEVICE, designed to connect the manipulator’s hand with the working body, made in the form of two coupling halves concentrically arranged relative to each other and mated between cylindrical and end surfaces, while the coupling halves are spring loaded one relative to the other in the axial direction, and mounted on one coupling half fixing elements, characterized in that, in order to increase reliability while increasing load capacity, on one of a pair of conjugated end and cylindrical Of the surfaces of the coupling halves, respectively, toroidal protrusions are made. S and FIG. 1 I