SU1218180A1 - Arrangement for fixing bush-type part on shaft - Google Patents

Description

one

The invention relates to mechanical engineering and can be used for keyless connection of parts.

The purpose of the invention is to expand the functionality by ensuring that the sleeve is connected to the shaft without stopping the latter.

FIG. 1 shows a device for fastening a sleeve-type part on a shaft, a section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a view B in FIG. one.

The device consists of a sleeve 2 spanning shaft 1 with an eccentric groove in which two annular wedges 3 and 4 are placed, spring-loaded to each other by a spring 5.

An axial wedge 6 is located between the ring wedges in the constricted part, which by means of the thrust bearing 7 abuts the disk 8, and between the pressure disk and the stationary body 9 in four holes with inclined surfaces arranged circumferentially, balls 10 are installed.

The device works as follows.

When torque is transmitted clockwise, for example, from shaft 1 to hub 2 wedge 3 shafA -A

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into the space between the respective surfaces of the shaft 1 and the eccentric cone of the sleeve 2.

5 When working in the opposite direction, a wedge 4 is tightened. Spring 5 holds wedges 3 and 4 in a predetermined position, and also serves to compensate for possible gaps in the joint,

10 especially with inaccurate parts manufacturing.

The wedging angle is chosen less than the friction angle between the friction surfaces of the wedges 3 and 4 of the eccentric groove of the hub 2. Axial

the wedge 6 is shifted to the right, the balls 10 are located in the deep part of the holes (Fig. 3).

Dp disconnecting it is necessary to turn the pressure disk 8 clockwise, while the balls 10, rolling out through the holes, displace the pressure disk 8 with the thrust bearing 7 and the axial wedge 6 to the left, the last, pushing the ring wedges 3 and 4 in the radial direction, wedge compound. Torque transmission is stopped.

This device allows you to turn the connection on and off when transmitting torque without stopping.

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VNIIPI Order 1119 / o Circulation 777 subscription Filial PPP Patent, Uzhgorod, ul. Project, 4

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Claims (1)

DEVICE FOR MOUNTING DETAILS OF A BUSH TYPE ON A SHAFT containing two ring wedges located in the eccentric groove of the sleeve corresponding to the shape of the groove, and a mechanism for controlling the connection of the sleeve with the shaft, characterized in that, in order to expand the functionality by ensuring the connection of the sleeve with the shaft without stopping the latter, the control mechanism is made in the form of an axial wedge placed between the ring wedges in the narrowed part, and covering the shaft of the rotary disk, installed with the possibility of interaction Via a wedge through the thrust bearing and the stationary housing which is in contact with the disk by povorotnm razmeschennyh.v response wells beads. © 4 fie. 1 - »1