The reversible boom conveyor drive is mounted on a drive frame and is supported on the revolving frame by a torque arm with plain spherical rod ends. The bearing housing supporting the discharge pulley assembly on either side are supported on sliding blocks at boom head.
The movement of the bearing blocks for the purpose of adjustment of the belt tension and the belt changing is achieved through screwed spindles. Belt sway, pull cord and belt slip monitor switches are included for protection of the conveyor. The various safety features of boom conveyor are:
- Zero Speed Switch – It is provided at the non drive pulley to monitor the pulley and thereby the belt speed and trip the conveyor motor in the event of the belt speed dropping below a preset value.
- Belt Sway Switch – It is mounted on boom on either side of the conveyor, to trip the conveyor in the event of the belt running out of the line and pressing against the rollers levers of the switches.
- Pull Cord Switch – It is provided on the support frame on either side of the conveyor, to permit tripping of the conveyor motion manually from the boom walkway in case of any emergency.
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