RU2260553C2 - Belt conveyer roller - Google Patents

Abstract

FIELD: belt conveyer roller supports.

SUBSTANCE: proposed roller has cylindrical shell, bearing units, external seals, axle and inner pipe separating the shell cavity from bearings. Chambers formed between external seals and bearings are filled with porous material impregnated with oil. In case of pressure differential between outside atmosphere and atmosphere in inner cavities of rollers, dust-laden air overcomes action of seals and enters the said chambers where dust is held reliably.

EFFECT: increased service life of bearing units.

1 dwg

Description

The invention relates to the field of hoisting and transport machinery, namely to rollers used as roller bearings, and can be used in the coal, metallurgical, mining, construction, energy industries to increase the service life of roller bearing bearings.

Known rollers of belt conveyors, including a cylindrical shell, bearing units, external seals and axis [1, p. 1040].

However, this design, instead of the estimated life of 10-12 years under the conditions of conveyor transportation of abrasive materials (sinter production, ore quarries, blast furnaces, concentration plants, etc.), ensures that no more than 6 bearing assemblies fail months. Different seal options have little effect on this life. By reducing the pressure inside the rollers during a drop in their temperature (in the pauses between the periods of operation during transportation of hot materials, during the day and night hours, etc.), as well as in cases of a rapid increase in atmospheric pressure, abrasive dust is sucked into the seals and abraded it penetrates into the bearing units, thickening the grease, forming abrasive pastes, wearing out cages and rolling elements. Several of these \ breathing \ cycles completely disable bearings that stop rotating.

Closest to the proposed invention in technical essence and the achieved result is the construction of the roller, including a cylindrical shell, bearing units, outer seals, axis and inner tube, chambers are formed between the outer seals and bearings [2]. In this embodiment, the rollers \ breathing \ volumes are significantly reduced, and the service life is accordingly increased. However, dust sucked to the seals abrades them and penetrates the chamber. When the roller rotates, dust is poured into the chamber, as a result of which it enters the bearing and destroys it.

The objective of the invention is to increase the service life of the bearing assemblies of the roller conveyor belts.

The essence of the invention lies in the fact that in the roller of a conveyor belt including a cylindrical shell, bearing units, outer seals, an axis and an inner tube, chambers are formed between the outer seals and bearings, according to the invention, the chambers are filled with porous material impregnated with oil.

The drawing shows a cross section of the proposed roller conveyor belt.

Bearing units are installed along the edges of the cylindrical shell 1, including bearing housings 2, 3 and bearings 4, 5 (bearings can also be installed in the shell). The bearing housings are interconnected by a pipe 6, inside of which there is an axis 7, which forms a cavity 8. Together with the pipe 6 and bearings 4 and 5, the roller bearings are protected from the ingress of large dust by external seals 9, 10. Between the seals 9, 10 and bearings 4, 5, chambers 11, 12 are formed, filled with a porous material impregnated with oil. The cameras are formed by the outer 13, 14 and the inner 15, 16 buildings. The cavity of the shell 17 is reliably isolated from the bearings by pressing the pipe 6 into the bearing housing 2, 3.

Protection against the penetration of abrasive dust into the bearings of the conveyor rollers in the proposed design is as follows. In the case of the formation of a pressure differential between the external atmosphere and the internal cavities of the roller (and the external pressure must be greater than the internal), dusty air ultimately overcomes the seals and enters the chambers 11, 12.

To eliminate dust spillage inside the chamber during rotation of the roller and its possible penetration into the bearings due to mechanical mixing, the chamber is filled with porous material impregnated with oil (transformer or condenser) and reliably holding dust that has got into the chamber.

Literature

1. Engineering. Encyclopedic reference book. Section Four. Machine design. Volume 9. - M .: Mashgiz, 1949, 1208 p., Ill.

2. SU 45529 A, 1935

Claims (1)

A conveyor belt roller comprising a cylindrical shell, bearing assemblies, outer seals, an axis and an inner tube separating the shell cavity from bearings, wherein chambers are formed between the outer seals and bearings, characterized in that the chambers are filled with porous material impregnated with oil.