SU1247597A1 - Slip coupling - Google Patents

Description

The invention relates to mechanical engineering and, in particular, can be used in rolling mill equipment.

The purpose of the invention is to increase the reliability, accuracy and smoothness of operation by reducing the influence of friction forces between the elements of the shutdown node and the elimination of impact effects.

FIG. schematically shows the proposed coupling, a longitudinal section; in fig. 2 - section A-Anafig.1; on fig.Z - view B in figure 1.

The coupling consists of a leading coupling half, made in the form of shaft 1, on which gear 2 is rigidly fixed, input w; and engaged with satellites 3, planted rotatably on axles 4, mounted parallel to the axis of the coupling and resting on bearing bearings 5, mounted in the driven half coupling (body) 6. The disks 7 and the cranks 8 are fixed on the axis x 4, and in the disks 7 there are hollows a (fig. 3), which come into contact with breadcrumbs 9, which are jointly connected with gear wheels 3, and cranks 8 st for: us with rods 10 (Fig. 2), spring-loaded via the springs 11 and passing through the holes in the stops 12, hingedly mounted in the driven coupling half 6.,

The crackers 9 are made in such a way (Fig. 3) that, in the working position, they come into contact with the working surfaces of the cavities a, filled in the disks 7, and with the projections b of the slots c, made in the satellites 3.

The geometrical parameters of the pr: ganglion assembly (10 and 11) and gearing (2 and 3) are selected based on the condition that the springs have the required transmission torque at the minimum possible spring diameter of 1 G, as well as the allowable overall dimensions of the coupling.

The safety clutch works in the following way.

In the initial unloaded state, the clutch crackers 9 are in contact with the working surfaces of the cavities of the discs 7, the crankshaft 8 are in the extreme position (when the springs 11 are unloaded). During the period

switching on the drive of the rolling mill of torque to the moment from the leading coupling half through gears 2 and 3, crackers 9 and discs 7 is transmitted to axis 4 and through them to cranks 8. The last 8 are compressed with the help of rods 10 of the spring 1Лз1 И, which affect the stops 12 , create a cool right moment on the driven half coupling 6.

 The nppt occurrence in the main line of the rolling mill of a moment equal to the maximum allowable cranks 8 rotates to a position where the moments generated by the compressed springs 11 on the axis x 4 are maximum. . Then the rotation angles of the cranks 8 increase to the position when the centers of the axes 4, the centers of the hinges of the cranks and the centers of the stops 12 are on the same line 0 (the moments created by the springs on the x-axis 4 are zero). After that, the axis 4 rotates rapidly in the same direction, since only force 5 acts on them; Springs 115 create an inverse moment in the original direction. Due to the fact that the rotational speeds of the discs 7 are greater than the speed of the rotation of the satellites 3, the crackers 9 go out of engagement with the discs 7, thus disconnecting the drive and driven half coupling.

Re-bringing the safety clutch into the working position 5 is carried out in the following sequence. The rotation of the discs 7 is crooked: the spikes 8 are returned to their original position and thereafter the crackers 9 are brought into contact with the working surfaces of the depressions of the ijO discs 7. After this, the coupling is ready for operation.

Due to the fact that the satellites are rotatably mounted on the shafts, and the axes of the executive mechanism are installed in the housing and equipped with rigidly mounted cranks, articulated with the springs relative to the housing with the stems and disks connected to the satellites through 50 side surfaces of the croutons, it became possible to disengage the coupling when the maximum permissible torque was reached at the: single shaft due to the transfer of the crank – brush system through

dead position and a smooth break with the kinematic chain in the actuator. Wherein

the accuracy of the coupling operation is significantly improved compared to the prototype, since there are no functional friction units in the actuating unit, and the magnitude of the force parameters in its elements depends only on their relative position. Besides

Moreover, due to the fact that during the period of disconnection of the clutch, the transmitted moment smoothly changes from maximum value to zero, shock loads at the protected nodes are eliminated and dynamic parameters in the main line of the rolling mill are reduced.

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Editor S. Lisin

Compiled by V.Ivanov Tehred I.Gaidosh

Order 4105/35 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, st. Project, 4

srig-e

Proofreader A.Zimokosov

Claims (2)

1. A SAFETY COUPLING comprising a housing mounted on the driven shaft, a sun gear rigidly connected to the drive shaft and engaged with satellites mounted on axially arranged rotationally movable axes, elastic elements pivotally connected through cranks, and a drive link disconnecting unit from the driven made in the form of disks with slots rigidly connected to the axes of the satellite satellites and connecting elements in contact with them, the only difference is that, in order to increase reliability, accuracy and the actuation of triggering by reducing the influence of friction between the elements of the deviation unit and the exclusion of shock effects, the connecting elements of the disconnection unit are made in the form of crackers installed with the possibility of limited rotation on radially spaced fingers fixed in sockets made on the ends of the satellites, the opposite ends of the crackers are located in mutually inverted disk and satellite nests with the possibility of interaction with the working surfaces of the nests, the satellites are mounted on axes with the possibility of rotation, fixedly connected with the cranks mounted in the housing with the axes of the satellites, S and wheels disposed between the cranks and satellites. 2. The coupling according to π.1, distinguished by the fact that it is equipped with rods and stops pivotally connected to the body, one end of each rod is pivotally connected to the corresponding crank, the other is installed in the hole made in the stop with the possibility of relative movement and the elastic element is installed between the supporting surfaces of the rod and stop. SU ,, „1247597>