Anti-two-block weight and chain for Grove

The anti-two-block weight and chain assembly, part number 3486000414, is a safety component for Grove cranes. It functions as part of the system that detects when the crane hook or load block approaches the boom head too closely. The weight, suspended by a 6-foot chain, triggers a limit switch when the hook reaches a critical proximity, which signals the crane system to stop hoisting or boom extension movements. This prevents the two-block condition, protecting the boom, hoist cable, and load block from impact damage.

This assembly is compatible with a wide range of Grove mobile cranes, including all-terrain, truck-mounted, and industrial models. The 6-foot chain length provides the necessary reach to ensure the weight correctly activates the limit switch at the predetermined safety distance. Proper operation of this component is necessary for the crane's safety monitoring systems to function as intended during lifting operations.

Anti-two-block systems are used in crane operations to maintain a safe distance between the load handling equipment and the boom tip. By suspending the weight from the limit switch, the system provides an automated response to prevent mechanical interference, which is a standard safety requirement for heavy lifting equipment.