RU195137U1 - MAGNETIC ROTARY CONVEYOR DRUM DRUM - Google Patents

Abstract

The utility model relates to lifting and handling equipment, namely, drive drums of conveyor belts. The drive drum of a conveyor conveyor on magnetic rotation bearings comprises a welded drum, a drum shaft, rotation bearings with end caps, bushings, thrust bearings, insulating ring seals, labyrinth seals. There are design features in the drive drum of the conveyor belt, namely, magnetic bearings of through and blind construction are used, interconnected by the drum shaft, on which the drum is welded with a conveyor belt, and the permanent magnets installed in the magnetic bearings of rotation allow the drum shaft to be held in the air the gap by magnetic levitation using a magnetic field created by permanent magnets, and perceive radial loads from the tension of the conveyor belt. The technical result when using the claimed utility model is to increase reliability in operation.

Description

The utility model relates to hoisting and conveying equipment, namely to drive drums of conveyor belts.

A drive drum of a conveyor belt is known, comprising a welded drum, hubs, shell, bearings, characterized in that a welded drum is used in the construction, in which disks having a circle structure, a shell, end disks with holes along the radius that perform the functions of stiffeners, diaphragms are installed located in the middle of the welded drum, having a ring design and performing the function of stiffeners, moreover, the bearing housings, hubs and shell are made of carbon steel, the drum shaft is made of high-angle erodistoy steel (utility model patent №188353 from 09.04.2019 city).

A disadvantage of the known design is the use of double-row radial spherical roller bearings as rolling bearings. The use of these rolling bearings has the following disadvantages: periodic replacement of grease is necessary; the operating life of the rolling roller bearing is not more than 5-6 years, which necessitates the replacement of the roller bearing and leads to idle belt conveyor; the use of poor-quality bearings or their overheating leads to failure of the drive drum and the idleness of the conveyor belt; the moment of resistance to rotation of the rolling bearings of the drive drum leads to an increase in the value of power consumption of the conveyor drive electric motor.

The objective of the claimed utility model is to create a drive drum, the design of the bearing units of which will provide the possibility of free rotation of the shaft in a magnetic field, which will ensure that there is no possibility of overheating and jamming of the bearing and the entire drum as a whole. The absence of a moment of resistance in the bearing assembly during rotation of the drum. No need to replenish the drum bearing assembly with grease.

The technical result when using the claimed utility model is to increase reliability in operation.

This problem is achieved due to the fact that the drive drum of the conveyor belt on magnetic rotation supports is proposed, the design of which has design features, namely, magnetic rotation supports of a through and blind structure are used, interconnected by a drum shaft on which the drum welded to the conveyor is placed tape. Moreover, the permanent magnets installed in the magnetic supports of rotation allow the drum shaft to be held in the air gap by magnetic levitation using the magnetic field created by the permanent magnets and to absorb radial loads from the tension of the conveyor belt.

The utility model is illustrated by drawings.

In FIG. 1 shows a drive drum of a conveyor belt on magnetic rotation bearings;

In FIG. 2 shows a drive drum of a conveyor belt on a magnetic support of rotation of a through structure;

In FIG. 3 shows a drive drum of a conveyor belt on a magnetic support of rotation of a blank structure.

The drive drum of the conveyor belt on the magnetic bearings of rotation of the through and the blind design contains the shaft of the drum 1, the housing of the magnetic support of rotation 2, the drum of the welded 3, the sleeve 4, the permanent magnets 5, the thrust bearing 6, the insulating ring seals 7, the end-end cover 8, the grease fitting 9 , labyrinth seals 10, blind end cover 11.

The operation of the device is as follows:

Welded drum 3 using the shaft of the drum 1 is installed on the magnetic bearings of rotation of the through and the deaf structure, ensuring the stability of the device. Using the driving force from the drive (not shown), the welded drum 3 senses a torque through the shaft of the drum 1 installed in the magnetic bearings of rotation of the through and the blind structure, as a result of which the welding drum 3 rotates. The driving force from the drive of the welded drum 3 transfers to the tape (not shown) belt conveyor. In the magnetic bearings of rotation of the through and the deaf structure having the identical design, sleeves 4 with permanent magnets 5 that create a magnetic field are mounted on the shaft of the drum 1. This design allows you to install the shaft of the drum 1 in the air gap S = 0.3-05 mm by magnetic levitation using a magnetic field created by permanent magnets. Magnetic levitation provides the installation of the shaft 1 in a suspended state and perceives the radial load from the tension of the conveyor belt. Insulating ring seals 7 and labyrinth seals 10 are installed from the end parts of the sleeve 4 and the permanent magnets 5, which prevent dust, grease and dirt from entering the permanent magnets 5. The thrust bearings 6 are installed at the ends of the shaft 1, which absorb axial loads magnetic levitation with an air gap of S = 0.3-0.5 mm. From the end, the thrust bearings 6 are closed by a cover of the end-to-end 8 of the magnetic support of rotation through. In the magnetic support, the thrust bearings 6, which are blind from the end, are closed by the end blind cover 11. The grease gun 9 provides replenishment of the grease in the thrust bearing 6. The main parts are installed in the housing of the magnetic rotation supports 2 of the through and the blind design.

This design of the drive drum of the conveyor belt on magnetic rotation bearings provides increased durability of up to thirty years of the bearing assembly without replacing permanent magnets, saving on lubricants, due to the lack of the need for constant replenishment with thick grease. The power consumption of the belt conveyor drive motor is also reduced, due to the absence of a resistance moment when the drum rotates. In addition, reliability is increased due to the lack of the possibility of overheating and jamming of the bearing assembly and the drum as a whole. Mounting and dismounting is simplified due to the absence of the need for pressing and extrusion with heating, as with standard rolling bearings.

Claims (1)

The drive drum of a conveyor belt on magnetic rotation bearings comprises a welded drum, a drum shaft, rotation bearings with end caps, bushings, thrust bearings, insulating ring seals, labyrinth seals, characterized in that the magnetic bearings of the through and blind design are used in the construction interconnected by the drum shaft, on which the drum is welded with a conveyor belt, and the permanent magnets installed in the magnetic bearings of rotation allow hered drum shaft in the air gap of the magnetic levitation by a magnetic field generated by the permanent magnets and accommodate radial loads from the tension of the conveyor belt.

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