Pull Cord Switch

A pull cord switch is an emergency switch to stop the belt conveyor instantly when an accident happens. Since the Switch is so designed that it should be installed at the side of the belt conveyor and the pull cord should be mounted along the conveyor. The switch can be actuated at any position.

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PULL CORD SWITCH

Pull Cord Switch is a switch that is mounted along a conveyor stringer. It is manually actuated by a cord that runs the full length of the conveyor. The cord can then be pulled at any point on the conveyor as an emergency stop.

The Pull Cord Switch is installed at the side of the belt conveyor and the pull cord is mounted along the conveyor. When an accident occurs in the belt conveyor, the worker can stop the belt conveyor at any position by pulling the cord in order to drive the actuating arm rotating.

Construction

As these Switches are used as safety or emergency switch, it is not operated very frequently. Therefore the construction of this switch is such that it should be operated immediately though it kept idle for a long time.

It is housed in a dust and weatherproof enclosure. A sturdy and heavy-duty cam-switch with robust contacts is used to give longer service life.

Operation

It is mounted on the walkway side of the conveyor belt, preferably at about every 20-25 meters. When the rope is pulled from any side. The switch gets operated. Unless and until the handle is reset to normal position manually, the switch remains in operating condition.

All the switches installed along an individual belt are electrically wired in series and connected to the control station by a two-core cable. Therefore actuation of any one of these pull cord switches will stop the concerned conveyor until the particular switch is manually reset.

Application

It is also known as the Rope Operated Emergency switch is used as a safety switch to stop the conveyor belt in case of an emergency.

THE INFINITY CORPORATION is one of the leading suppliers of Pull cord switch and other crane products all over India.

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