RU2721807C1 - Yurchenko hinged coupling (embodiments) - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used for connection of shafts. Hinge coupling comprises two outer links (1, 2) and six rollers (3), part of the surface of which is made in the form of truncated cones with their smaller bases facing the common centre. Angle at the vertex of the imaginary part of each tapered roller 90°. Every two rollers facing each other with smaller bases have one common axis. Length of fixing element (4) between rollers is equal to sum of height of separated conical parts from these two rollers, and maximum size of fixing element section does not exceed least of four diameters of smaller bases of truncated conical surfaces of rollers belonging to two links.

EFFECT: enabling the design simplification.

1 cl, 2 dwg

Description

The invention relates to mechanical engineering and can be used to connect shafts that transmit torque at various, possibly changing angles.

A device is known as an articulated coupling (GOST 5147-97), which has found wide application in various machines: aircraft, instruments, machines, cars, agricultural machines, etc., when, under operating conditions, the relative position of the shafts transmitting rotation is necessary. The hinged coupling consists of two identical coupling halves in the form of a hub with a fork (the coupling forks are turned 90 °) and the cross piece connecting the coupling halves. The crosspiece is connected to the forks of the coupling halves by hinges.

However, the disadvantages of the articulated coupling are the complexity of the design and the assembly-disassembly process.

Closest to the proposed invention is the HINGED COUPLING YURCHENKO, patent No. RU 2667419 C1.

The disadvantage of this device is the dependence of the size of the articulated coupling on the size of the centering ball (selection or manufacture of the ball of the required size).

The objective of the present invention is to simplify the design of the articulated clutch and reduce manufacturing costs.

The task is achieved in that the articulated clutch contains two outer links and six rollers, part of the surface of which is made in the form of truncated cones, facing their smaller bases to a common center. The angle at the imaginary vertex of the conical part of each roller is 90 °. Each two rollers facing each other with smaller bases have one common axis. All six, in pairs, are located on three mutually perpendicular axes, while two rollers facing each other, of four lying in the plane of the coupling axis perpendicular to the initial position, belong to the first link, and the other two rollers belong to the second link. The remaining two rollers located along the axis of the coupling, which is in the initial position, are rigidly fixed to each other. The size of the length of the locking element between the rollers is equal to the sum of the heights of the cut-off conical parts from these two rollers, and the maximum cross-sectional size of the locking element does not exceed the smallest of the four diameters of the smaller bases of the truncated conical surfaces of the rollers belonging to two links. The force during the transmission of torque from the first link is directly transmitted to the second through the contact of the conical surfaces of the rollers of the first and second links, bypassing any intermediate link. This design allows both links to deviate from the common longitudinal axis of the articulated coupling, while the conical surfaces of the rollers in contact with each other run around each other along mating surfaces.

The device of this articulated coupling has fundamental differences from most existing articulated couplings and mechanisms that transmit torque through an intermediate link (crosses of various designs, sprockets, balls, rollers, etc.) - direct transfer of force from link to link.

The invention is illustrated by drawings: in Fig. Fig. 1 shows the swivel coupling in its initial position, in Fig. 2 shows the design when transmitting torque M from one outer link to another at an angle α ° to the initial position, where:

1 - outer link 1

2 - outer link 2

3 - rollers 6 pieces

4 - fixing element

The advantages of the invention are its compactness, reliability during operation, ease of maintenance, low manufacturing costs.

Claims (1)

The articulated coupling, characterized in that it contains two outer links and six rollers, part of the surface of which is made in the form of truncated cones, facing their smaller bases to a common center, the angle at the imaginary vertex of the conical part of each roller is 90 °, every two rollers facing each other to each other with smaller bases, they have one common axis, all six, in pairs, are located on three mutually perpendicular axes, while two out of four rollers facing each other lying in the plane of the perpendicular axis of the coupling in the initial position belong to the first link, and the other two rollers belong to the second link, the remaining two rollers located along the axis of the coupling located in the initial position are rigidly fixed to each other, the length of the locking element between the rollers is equal to the sum of the heights of the cut-off conical parts from these two rollers, and the maximum cross-sectional size of the locking element is not exceeds the smallest of the four diameters of the smaller bases truncated the conical surfaces of the rollers belonging to two links, the force when transmitting torque from the first link is directly transmitted to the second by contacting the conical surfaces of the rollers of the first and second links, bypassing any intermediate link, this design allows both links to deviate from the common longitudinal axis of the articulated coupling while the contacting conical surfaces of the rollers run in relative to each other on the mating surfaces.

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