SU815393A1 - Shaft seal - Google Patents

Description

one

The invention relates to seals of aggregates, namely to seals of shafts of onboard gearboxes, gear boxes and wheel gearboxes of automobiles.

A combined seal is known, consisting of an end seal and a radial clearance seal with rubber cuffs. This seal has a rotating ring, which is pressed onto the shaft, a fixed ring, a diaphragm, a cuff and a spring that lifts the fixed ring l.

A disadvantage of the known device is the lack of reliability of the seal in the designs of gearboxes, in which the shaft, in addition to the rotational motion, also oscillates along the axis

The purpose of the invention is to increase the reliability of compaction.

This goal is achieved in those in the fixed ring there is a nest, in which a sealing cuff interacting with the shaft is placed.

The drawing schematically depicts the shaft seal gear.

The seal consists of a rotating ring 1 attached to the shaft.

2, fixed ring 3, diaphragm

4, ensuring the sealing of the cavity of the gearbox with axial movement of the shaft 2, a conical spring

5, providing a constant contact in the mechanical seal, and the cuff 6. In the fixed ring, the socket 7 is made, and the cuff 6 is installed in the socket, while the vertical

0 the surface of the nest 7 of the stationary ring is coaxial with the vertical inner surface of the stationary ring in contact with the shaft.

When rotating the shaft 2 tightness

5 is provided by the mutual contact of the time between the ring 1 and the stationary ring 3. Due to the elastic-elastic suspension of the stationary ring 3 relative to the housing on the diaphragm 4, the cuff and shaft are strictly aligned at possible beats of the latter.

The advantage of the proposed mouth

5 features are increased reliability of the seal with possible beatings of the shaft to be sealed.

Claims (1)

Invention Formula Shaft seal, mainly 0 gearbox containing rotatable with the shaft, a sealing ring and a fixed ring pressed against it by a spring, connected to the housing by a diaphragm, characterized in that, in order to increase the reliability of the seal, in the fixed ring there is a socket in which a sealing cuff cooperating with the shaft is placed. Sources of information taken into account in the examination 1. Orlov P. I. Basics of Design, M., mechanical engineering, 1977, p.108.