Anti Two Block Limit Switch

When installed correctly the a2b switch serves as positive break limit switch for use on winches lifting equipment and cranes.

Anti two block limit switch.

Get contact details and address id. Crane two blocking problem solved with hubbell limit switch posted on october 10 2006 january 17 2018 by eric brown use of power circuit limit switches with flux vector drives in molten metal hoist applications recently engineered lifting systems fielded a call from a customer with production that includes the hoisting of molten metal. Without a proper crane a2b system a two block can cause expensive damage to the crane boom personnel and surrounding property. Two blocking is a dangerous condition where the hook block is raised until it contacts the boom tip.

Anti to block limit switch. Crane safe technologies offering anti to block limit switch dust proof limit switch end switch ल म ट स व च new items in mumbai maharashtra. The anti two block switch a2b isens hes consists of a switching unit and an optional divisible operating weight. Anti two block atb or a2b warning systems are used to warn or prevent the crane operator from two blocking the crane.

In this scenario the lower load block or hook assembly comes in contact with the upper load block or boom point sheave assembly seriously interfering with safe operation. Pat hirschmann anti two block switch information. Anti two block for crane cable in this application our j4 series ball switch is used to detect and prevent the dreaded two blocking scenario during crane operations. Without anti two block protection operators can pull the hook and load through the crane body damaging the crane or causing safety risks.

Features the a2b limit switch monitors the load block to its relationship with the head of boom. Anti two block switches twgs offers both wired and wireless anti two block atb switches. Pat hirschmann anti two block warning systems are used on cranes to halt or caution the operator of unsafe upward movement of the hook.