SU1247591A1 - Telescopic joint - Google Patents

Description

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-BUT

five

FIG.

The invention relates to a general engineering development and, in particular, can be used in the construction of a combination of actuators and screw jacks of the swashplate of a helicopter stand.

The purpose of the invention is to reduce the size of the device while simplifying its structures.

FIG. 1 shows the proposed connection, a longitudinal section; in fig. 2 is a view A of FIG. I, longitudinal section; in fig. 3 is a section BB in FIG. 1I in FIG. 4 shows a section B-B in FIG. 2 ..

The telescopic connection consists of a shaft 1 with a working section 2 of a rectangular profile and a shaft 3, made with a hole of a rectangular profile at its working (end) section 4, encompassing shaft 1. Balls 5 are located between the interconverted surfaces of the working sections of shafts 1 and 3 , installed in closed channels 6 and 7, formed on the male section of rectangular profile 2 by means of longitudinal samples 8 and 9, the end sections of which are bjxx are pairwise connected by semicircular grooves 10 and 11. Balls 5 are installed in channels 6 and 7 with the possibility of simultaneous interaction with the walls of samples 8 and 9 and the adjacent sides of the hole made in the working section of the shaft 3,

The operation of the telescopic connection is as follows.

When transmitting torque from section 2 to section A and in the axial direction, the relative

the positions of the shafts 1 and 3, the balls 5, rolling over samples 8 and 9 and the surfaces of the orifice made in section A, are moved by means of semiannular grooves 10 and 11 along

closed g contour of working channels 7.

Making a telescopic connection with the balls between the connected shafts in the dimensions of the specified connection makes it possible to compare the results of new experiments with old ones without recalculation, without specifying the measurement accuracy of the forces and improve the measurement accuracy of the moments, while the large size and weight of the mechanisms The control of the swashplate of a helicopter stand makes it unacceptable to place them on a strain gauge when tested in the air flow of the helicopter rotor wind tunnel.

Type A

.

P

fuy. 2

fig.Z

1l

FIG.

Editor S. Lisin

Order 4105/35 Circulation 777 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

Compiled by V. Chel

Tehred I. Gajdosh Proofreader A, Zimokosov

Claims (2)

1. TELESCOPIC CONNECTION, comprising a female shaft, male shaft with a working section of a rectangular profile and means for transmitting rotation between them, made in the form of balls located in closed channels between the mutually inverted surfaces of the connected shafts, characterized in that, in order to reduce dimensions while simplifying structures, channels for balls are located on the working section of the male shaft and are made in the form of prismatic samples, the end sections of which are pairwise connected by half-rings grooves, and the balls are placed in the channels with the possibility of simultaneous interaction with the walls of the samples and the adjacent sides of the holes made in the enclosing shaft. 2. Connection by π. 1, which is characterized in that the enclosing shaft in the cross section is rectangular. SU. 1247591 A of FIG. 7 1 1247591