SU838141A1 - Toothed coupling - Google Patents

Description

The invention relates to mechanical engineering and is intended to transmit torques with high kimatic accuracy between shafts installed with displacement and misalignment of axes and having the possibility of axial shifting, for example, in reversing automation drives for installing automation sensors for the main drive of a rolling mill, control gear drives for pointers of the solution of the rolls of the reversing rolling stand, as well as in power drives (mainly non-reversible).

The cog coupling is known, which has an aubut holder with internal teeth and the coupling halves entering into it, the Kahai of which is loosely fitted to the sleeve with external teeth, the shape and number of which corresponds to the teeth of the half coupling, while the coupling half is connected to the sleeves through elastic elements placed between the protrusions made on the hubs of the sleeves and the coupling half. This clutch allows precise rotation without backlash 1

The disadvantages of this gear coupling design complexity, availability

a plurality of elastic elements, a separate selection of backlash in the engagement of each of the coupling halves, as well as limited durability, and load capacity, due to the fact that the interaction with the gear ring of the yoke of the coupling halves and sleeves occurs along the edge at the junction of the latter.

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A gear coupling is also known, containing two coupling halves with a gear rims interconnected between each other: a gear bushing and a torsion e-element. The ends of the last5 are rigidly connected to the coupling halves.

This clutch also provides torqueless torque transmission, since the torsion element, which is in the stressed state 0, turns the coupling half in opposite: directions and elastically presses their teeth to the teeth of the clip 2,

However, in view of the rigid connection of the ends of the torsion element with half-sleeves, when twisting the torsion element, the coupling halves approach each other several times, creating axial loads on the bearing pads of the 1x shafts. Due to the longitudinal coupling between the coupling half, the coupling cannot compensate

axial displacements of the shafts and limits their angular displacements.

Purpose of the invention

Determination of the compensation properties of the gear coupling.

The goal is achieved by the fact that in a gear coupling containing two coupling halves; with gear rims interconnected by an intermediate gear bushing and a torsion element, o-axial holes are made on the inner ends of the coupling halves, in which the ends of the torsion element are mounted with the possibility of longitudinal movement.

FIG. 1 shows a first embodiment of a gear coupling; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a second embodiment of the gear coupling; in fig. 4 is a section BB in FIG. 3

The gear coupling (fig. 1) comprises coupling halves 1 and 2 with gear rims 3, an intermediate sleeve 4 consisting of two half-belts 5 and 6 with gear rims 7 entering into engagement with the gear rims 3 of the half coupling 1 and 2, bolts 8, connecting half pins 5 and b of the torsion element 9, the ends of which are connected to the coupling halves 1 and 2 with the possibility of axial movement while the torsion element can be assembled from plates 10.

The clutch works as follows

The choice of backlash in the engagement of the rims 3 and 7 is provided by one torsion element 9, which is twisted relative to the coupling halves 1 and 2. The twisting of the torsion element 9 is made by rotating one of the half couplings 1 or 2 by the calculated angle until the holes for the bolts 8 in the half-booms 5 and b.

The implementation of the torsion element 9 in the form of a set of plates allows for the necessary torque to be transmitted by the gear coupling without backlash.

During operation, when the gear coupling rotates in the direction opposite to the direction of preliminary twisting of the torsion element 9, the torque is transmitted between the coupling halves 1 and 2 through the gear rims 3, the gear rims 7, the half arm 5 and 6 and the bolts 8.

In reverse, the torque is transmitted between coupling half 1 and 2 directly through the torsion element 9, and the gear rims are in contact with the same surfaces as in the previous case.

If the torque exceeds the twisting moment of the torsion element 9, the latter is additionally twisted by the amount of corner play of the gear coupling and the gear rims 3 and 7 come into contact with the reverse surfaces of the teeth.

FIG. 3 shows a second variant of the gear coupling, made as an intermediate connection.

The coupling comprises coupling halves 11 and 12f connected by bolts 13 to half-rings 14 and 15, which are provided with gear rims 16, an intermediate sleeve 17 with two gear rims 18 that engage with gear rims 16, a torsion element 19, the ends of which are movably in the axial direction with half couplings 11 and 12, plates 20, of which the torsion element is recruited.

The selection of backlashes in the engagement of the gear rims 16 and 18 is provided by the torsion element 19 in the same way as in the previous embodiment.

When the coupling is made according to the second variant, the distance between the half couplings 11 and 12 may be significantly larger than in the previous version and the torsion element 9 may be made of a single plate of any shape. The second variant of the gear coupling works in the same way as the first variant.

When designing a gear coupling simultaneously with the mating equipment, in order to reduce the axial dimension, the torsion element can be placed and secured in the hollow shaft of the mating equipment.

A gear coupling is capable of transmitting between shafts mounted with displacement and skewing of axes without angular backlashes, torques that are the same as a conventional gear coupling of this dimension in one direction of rotation, and when reversed, the transmitted torque should not exceed the torque of the torsion.

This gear coupling compensates for axial and angular offset and interconnected shafts, providing a backlash-free transmission of torque. At the same time, due to its simplicity, it is easily executable, its installation is simple, since the horses of the torsion element freely enter the holes of the coupling halves and the latter move freely in the axial direction.

Claims (1)

Invention Formula A toothed coupling containing two coupling halves with toothed rims interconnected by an intermediate toothed bushing and a torsion element, characterized in that, in order to increase its compensation properties, axial coupling is made at the inner ends of the coupling halves. Holes in which the ends of the torsion eggement are installed with the possibility of longitudinal movement. Sources of information taken into account in the examination .one. USSR Author's Certificate 214971, cl. F 16 D 3/18, 1967. 2, US Patent W 3399549, class 64-23, 1968 (prototype),