Belt Arrestor Technical Info

HOW DOES IT WORK

The belt arrestors are mounted onto the conveyor stringers below the head drive where most of the belt breakages occur. In the case of a belt breakage the tension in the belt is lost which activates our arrestors to trap both the top and bottom belts and prevent them from running back down the incline. Both ends are then in close proximity to facilitate easy belt splicing.

IS IT EFFECTIVE AND RELIABLE?

Our belt arrestors have operated successfully in harsh mine environments at various mines to the complete satisfaction of mine management.
The simplicity of the concept implies a very reliable machine. Its unique design relies only on gravity to function and does not make use of external power sources.

MAINTENANCE

The only moving parts in our arrestors are the main pivot bearings (which are maintenance free) and the idlers. The idlers must be checked at normal maintenance intervals as for the conveyor idlers.

MATERIALS AND COMPONENTS

Only materials and components conforming to strict standards are used. The entire machine is powder coated for excellent corrosive protection.

DESIGN AND DEVELOPMENT

The initial design was done with the aid of advanced computer simulation packages and the final hardware was tested at the csir to verify our design criteria and calculations.

  • The top arrestor is rated for a maximum holding force of 60 ton
  • The bottom arrestor is rated for a maximum holding force of 20 ton
  • The top brake is rated for a maximum braking force of 15 ton
  • The bottom brake is rated for a maximum braking force of 10 ton

SAFETY

With the timely stopping of a broken conveyor belt the risk of injuries or fatalities to the nearby mine personnel is greatly reduced. This will result in an improved safety record.

DAMAGE TO SURROUNDING STRUCTURE

A runaway belt can cause serious damage to the surrounding structures which can be limited by the timely arresting of the belts.

MATERIAL SPILLAGE

Arresting the belts will reduce the clean-up time of spilled material.

DOWNTIME

All this saving in time will reduce downtime from possible days to a couple of hours. This will improve productivity, thus cost of ownership

INSTALLATION

Installation of our arrestors is done by our expert installation team.  It takes typically 8 hours to install a Top and Bottom arrestor / brake for the same conveyor belt.

Our arrestors are mounted on the stringers of their corresponding conveyors. In some instances this stringers need to be reinforced with support steel to ensure a safe installation. The situation will be accessed during a mine survey which must be done in any case to check dimensional and other interfaces.

A recommendation on any support steel will be made.