Quad-V Drives Suit Larger Screens

A HR International Crushing and Screening product story

Edited by the Buildingtalk editorial team Aug 25, 2003

The optional Quad-V vibratory drive mechanisms used on the HR International range of inclined screens and scalpers ensure longer life, easier maintenance and reduced downtime.

They are particularly suited to larger screens, designed for high volume operations.

They can be fitted to single or multiple deck screens, mounted either through or over the mechanism side plates.

Screens three metres wide or over, with lengths up to ten metres can be accommodated.

Typical applications cover wide ranging quarrying operations, together with coal-fired power stations and steelworks.

Special purpose screens can also be supplied for virtually any bulk materials handling requirements.

The Quad-V drive features two horizontal shaft assemblies, each incorporating sub-assembly 'pods' at each end, bolted to splined connecting shafts for easy disconnection.

Each pod incorporates a stub shaft fitted with twin, double-row spherical roller bearings with a built-in lubricating system which ensures extended running life.

Counterweights are also fitted to the stub shaft, together with external pulleys for the motor drive.

The pod assemblies concentrate all the rotating eccentric mass at the screen side frames, where it is most effective in generating a controlled vibratory action.

The pod assemblies are also designed for easy access for servicing and maintenance ensuring that bearing changes or counterweight adjustments can be made in the minimum time.

Very little side clearance is required for stub shaft removal, which is particularly relevant where the screen is located adjacent to walls or other equipment.

The drive shafts can be set to run in the same or contra-rotating directions, transmitting different vibratory actions to the screen frames, inducing a circular or elliptical motion.

This well proven technique has been successfully used for screening operations for many years, with developments currently in hand for similar equipment for use with horizontal or slightly inclined screening operations.