SU1227882A1 - End seal - Google Patents

Description

The invention relates to a vehicle engineering industry, in particular to seals for track rollers of a tracked vehicle.

The aim of the invention is to improve the reliability of sealing and simplify the design of the mechanical seal while reducing its axial dimensions by reducing the zones of compaction.

Figure 1 shows the sealing assembly of the track roller of the crawler tractor, the section; in fig. 2 —compaction in a free state; in fig. 3 is a section A-A in FIG. 1, perpendicular to the axis.

The mechanical seal contains an elastic annular diaphragm 1, a star-shaped torsion spring 2 and an axially mounted glass 3 mounted along the axis of the roller. The protective glass 3 consists of internal 4 and external 5 cylindrical parts connected by a radial wall 6, which form facing node cavity 7. A groove 8 is made on the inner cylindrical part 4 of the cup, in which a thickening 9 arranged along the inside diameter of the diaphragm is placed with a tension.

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performed with a working edge 11 in contact with the end of the outer bearing race 12, and a radial sponge 13, which interacts with the inner surface of the outer cylindrical part 5 of the cup 3. The thickening 10 is reinforced with a frame 14, which has a protrusion protruding inside the cup 3 stops 15. Spring 2 ( Fig. 3) with one alternating apex rests on the stops 15 of the frame 14, and the others on the stops 16, which are made on the inner surface of the radial wall 6 of the protective cup 3.

The installation with the tension of the thickening 9, in the groove 8 provides a reliable tight joint of the diaphragm 1 with a protective glass 3.

The radial sponge 13 prevents the cavity 7 from penetration of dirt and abrasive into it, which allows the spring 2 to deform freely, and the edge 11 together with the thickening 10

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monitor the beats of the bearing-12 outer race.

The presence of protrusions on diaphragm 1, as well as protrusions on the protective glass 3, on which the tops of the spring 2 are supported, prevents the diaphragm from falling out of the threshold. 1 A relatively strong protective glass 3..

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Editor A.Gulko

Compiled by Y. Kibitkin

Tehred I. Veres Proofreader E. Roshko

Order 2277/38 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

 Production and printing company, Uzhgorod, Projecto st., 4

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Claims (1)

END SEAL of a track roller of a tracked vehicle, comprising an elastic annular diaphragm with a thickening in the inner diameter, a spring compressing the diaphragm to the end of the assembly to be sealed, and an antisplash cup mounted on the axis of the roller, as a whole that, in order to improve the reliability and simplify the design of the sealing unit while reducing its axial dimensions, the mud cup is made in the form of a body part having inner and outer cylindrical parts connected by a diagonal wall and forming a cavity facing towards the sealing assembly, and on the inner cylindrical part of the cup there is a groove in which the thickening of the diaphragm is placed with interference, and; On the periphery of the diaphragm, an outer annular thickening is made with the working edge facing the sealing assembly contacting the end of the sealing assembly and a radial sponge interacting with the inner surface of the outer cylindrical part of the glass, while the outer annular thickening is reinforced with a frame with protruding outward pb cup stops, holding against rotation relative diag phragma spring configured star-shaped torsion alternating peaks which are based respectively on the diaphragm and the inner surface of the radial wall-dirt cup, and a radial wall formed on the stops for fixing a spring against rotation.