RU2466309C1 - Safety coupling - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: coupling consists of composite housing, the parts of which are connected by bolt connection. Driven shaft is rigidly connected to one of the housing halves and drive shaft is mounted in bearings in all parts of the housing. At the free end of drive shaft inside the housing there is a gear that is brought into engagement with four gears mounted in intermediate part of the housing. There are cam gears on gear shafts that contact the rocker arms, on the free ends of which there mounted are the springs united in one loop.

EFFECT: coupling structure simplification.

2 dwg

Description

The invention relates to mechanical engineering and can be used to transfer rotational motion from a drive shaft to a driven shaft while protecting mechanisms from overloads exceeding the calculated ones.

Known safety clutch (patent No. 1016591, F16D 43/20), containing two flange coupling halves, one of which is made with sockets, and the other with axial holes and spring-loaded clutch elements located in them with an offset pitch of the sockets.

However, this clutch is difficult to manufacture.

The closest in technical essence and the achieved effect is (patent No. 2229042) a coupling consisting of a housing, input and output shafts, one of which is connected to the housing with the possibility of transmitting torque, friction set, pressure and spring elements, cam mechanism, rolling bearings and adjustment items.

The main disadvantage of the device is the difficulty in manufacturing.

The technical result consists in simplifying the design of the safety clutch.

The technical result is achieved by the fact that the coupling housing is made integral, consisting of the right and left halves with an intermediate cylindrical insert between them, interconnected by means of a bolt connection, the driven shaft being rigidly fixed to the left half of the housing, and the drive shaft mounted in the right and left halves in bearings, while at its free end, a gear is installed inside the housing, which engages with four gears installed in the intermediate part of the housing, and on their shafts that exit beyond the right half of the body, eccentrics are made in contact with the rocker arms, at the free ends of which springs are installed, combined in one circuit.

The invention is illustrated by drawings, where Fig. 1 shows a safety clutch, side view, Fig. 2 shows a section of a clutch.

The proposed coupling consists of a composite housing consisting of a right 1 and a left 2 halves with an intermediate cylindrical insert 3 between them, interconnected by means of a bolt connection 4, and the driven shaft 5 is rigidly mounted on the left half of the housing 2, and the drive shaft 6 is mounted in the right and the left halves 1,2 in the bearings 7, while on its free end inside the housing there is a gear 8, which engages with four gears 9 installed in the intermediate part of the housing 10, and on their shafts 11 extending beyond Yedelev right half of the body 1, the cams 12 are made in contact with the rocker arms 13, the free ends of springs 14 are mounted, combined in one circuit.

The present invention works as follows.

Torque is transmitted to the drive shaft 6, from which it is transmitted through gear 8 to gears 9, and through their shafts 11 to the eccentrics 12 and rocker arms 13. In this case, the springs 14 press the rocker arms 13 to the eccentrics 12, and the torque is transmitted through the housing to the follower shaft 5. At the moment when there will be an overload on the driven shaft 5, the shafts 11 with eccentrics 12, overcoming the stiffness of the springs 14, will begin to turn in relation to the rocker arms 13. A sound characteristic of a ratchet will appear, meaning that an overload has occurred and it is necessary to suspend operation - rotation drive shaft 5.

Main advantages:

1) the coupling is compact, easier to construct, technologically advanced to manufacture,

2) it is durable during operation, for example, coil springs withstand millions of load cycles,

3) as intended, it protects industrial equipment from breakdowns during overloads exceeding the calculated ones.

Claims (1)

A safety coupling, comprising a housing connected to the ends of the drive and driven shafts, characterized in that the coupling housing is made up of integral, right and left halves with an intermediate cylindrical insert between them, interconnected by means of a bolt connection, the driven shaft being rigidly fixed to the left half of the housing, and the drive shaft is installed in the right and left halves of the bearings, while a gear is installed on its free end inside the housing, which engages with four gears The camshafts are installed in the intermediate part of the housing, and on their shafts extending beyond the right half of the housing are made eccentrics in contact with the rocker arms, at the free ends of which springs are installed, combined in one circuit.

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