SU662755A1 - Inertia coupling - Google Patents

Description

I

The invention relates to the field of mechanical engineering and can be used to connect the shafts of machine units, working them in conditions of dynamic overloads and having mutual displacements of the axes.

A clutch is known that contains the leading and driven half coupling, each with diametrically opposite two fingers parallel to the axis of the half coupling, and four rollers mounted on each finger, while the fingers of the leading coupling half are kinematically connected with the fingers of the driven coupling half and are offset from the last coupling angular direction 1.

A disadvantage of the known coupling is the complexity of its design, as well as its low compensating ability, as with the displacement of the axes of the connected shafts, the coupling creates significant, moderate unbalanced loads transmitted to the shafts and supports.

To increase the compensating ability and simplify the design in the proposed coupling, the kinematic connection of the fingers is made in the form of a flexible tape, fixed with its ends on both rollers of the drive coupling half and the envelope surface of the rollers of the driven coupling half.

The possibility of reversing movement is ensured by the fact that the coupling is provided with an additional flexible tape, fixed with its ends on the rollers of the driving half coupling and the envelope rollers of the driven coupling half, and the direction of bending with additional tape is opposite to the direction of bending around the main tape.

FIG. 1 shows the proposed coupling, a general view; in fig. 2 shows section A-A in FIG. 1. in FIG. 3 shows a section BB in FIG. 1, with a load of blinker, to a nominal; in fig. 4 - the same, with a load close to the maximum; in fig. 5 - then

however, with a load close to zero; in fig. Figure 6 shows the action of forces arising during operation B of the proposed clutch in the presence of the axes of the connected shafts.

The inertia movable coupling comprises a coupling half 1 fixed to the shaft 2.

Unbalanced rollers 4 are mounted on the fingers of the 3 half-couplings, on which they are fixed, the ends of the flexible 5, the envelope of the rollers 6, set loosely on the fingers .7 of the coupling half 8, fixed

on the shaft 9. The additional flexible tape 10 is fixed on the unbalanced rollers 4, but bends around the rollers 6 of the driven half coupling on the other side. This flexible tape provides the possibility of operation of the coupling when reversing.

To reduce the load per flexible connection, rollers 4 and 6 are installed, for example, in two rows and, respectively, flexible connections 5 and 10 are also installed in two rows. Each row of rollers is installed independently of the other, and nat -. life in all flexible connections operating at a certain direction of the shafts is the same. - .-- - The coupling works as follows.

In working condition, the unbalanced rollers 4 are influenced by the moment Мр created by the force P inertia and the moment М created by the force T of tension of the flexible tape 5. The magnitude of the force T and, consequently, the moment Mt depends mainly on the magnitude of the moment from l on the driven shaft. With a static load on the driven shaft, the moments Mr and Mt balance each other, which corresponds to a certain value of the twisting angle of the drive and driven shafts.

As the load on the driven shaft increases, the torque Mt becomes greater than the torque Mp. This leads to the rotation of unbalanced rollers 4 at a certain angle, for example, counterclockwise. With such rotation of the rollers 4, the bending tape 5 increases the free length by reducing the length of the 4-coil wound on the rollers, which entails an increase in the twisting angle of the half couplings I and 8.

The bending tape 10 at the same time will correspondingly reduce its free length by increasing the length of the 4 wound on the rollers.

This rotation of the rollers 4 will lead to an increase in the arm OK (Fig. 3 and 4), and, consequently, to an increase in the moment Мр. The increase in the angle of relative twisting of the half couplings I and 8 will occur until Mp again becomes equal to M. The clutch in this case takes the position shown in FIG. four.,.,.:"

When the load on the driven shaft decreases, the moment Mt will become less than the moment Мр and the coupling halves 1 and 8 will rotate in the opposite direction. In this case, the bending tape 5 will decrease, and the bending tape 10 will accordingly increase its free length. If the load on the follower shaft becomes zero, the clutch will take the position shown in FIG. 5, in which the shoulder OK is equal to zero, and hence the moment M is also equal to zero.

The operation of the coupling in the opposite direction of rotation of the shafts is similar to 1a considered. When this bending tape 10 will be working, and bending tape 5 - single.

The resultant force (acting

The shafts and supports, which occur when the axes of the connected shafts are displaced, for example, the eccentricity value 0 Ct and is the geo-metric sum of the forces Q and Qj, has a small value.

The use of the proposed coupling will significantly reduce the harmful loads caused by the presence of axle displacements, the connection of shaft shafts acting on the shafts and supports, as well as reduce the dynamic

delivering the workload, also acting on the gears, shafts and supports of the masin 'unit. This will increase the service life of the machine units, will reduce the requirements for the accuracy of parts manufacturing and assembly, reduce

overall dimensions of machine units. Reducing the number of leads and joints will also simplify and cheapen the clutch.

Claims (2)

1. An inertial coupling containing the leading and driven half coupling, of which two fingers are diametrically opposite mounted parallel to the axis of the half coupling, and four rollers mounted on each finger, while the fingers of the driving coupling half are kinematically connected to the fingers of the driven coupling half and are offset from the latter in the angular direction, characterized in that, in order to increase the compensating capacity of the coupling and simplify its design, the kinematic connection of the fingers is made in the form of a flexible tape fixed by its 0 ends on both rollers of the leading coupling half and the envelope surface of the rollers of the driven coupling half. 2. Coupling according to claim I, characterized in that, in order to provide the possibility of reverse movement, it is provided with an additional flexible tape fixed with its ends on the rollers of the driving coupling half and the driving envelope of the driven coupling half, and the direction of the bending around with additional tape is opposite to the direction of the bending around the main ribbon . Sources of information taken into account in the examination 1. US patent No. 2910844, KJI. 64-19, 1959.