Chainstoppers

Chainstoppers are safety devices designed to prevent uncontrolled movement of a chain, typically in a crane, hoist, or elevator system. Their primary function is to arrest the downward motion of a load or mechanism in the event of a primary failure, such as a broken lifting chain or a malfunction in the drive system. By interrupting the chain's path, a chainstopper can prevent catastrophic accidents and protect personnel and equipment.

There are several types of chainstoppers, often differentiated by their mechanism of operation. Some employ a wedge or clamp system that physically grips the chain when activated. Others utilize a braking mechanism that engages directly with the chain links. The activation of a chainstopper can be automatic, triggered by sensors that detect overspeed or sudden acceleration, or manual, requiring an operator to engage the device.

The selection of a chainstopper depends on factors such as the load capacity, the type of chain used, the operating environment, and the required safety standards. Regular inspection and maintenance are crucial to ensure their reliable performance. Chainstoppers are a vital component in safety-critical lifting and conveying applications, contributing to operational integrity and risk mitigation.