Chain as the upgrade version of the crown block

Chain as the upgrade version of the crown chainb lock, fully inherited the merits of the crown block, at the same time, a reverse non-return brake speed reducer and the combination of the chain pulley block, symmetry secondary spur gear rotational structure, simple, durable and efficient.Chain generally adopts chip hoist equipment ratchet friction brake, can self braking under load, ratchet in under the action of the spring and ratchet gearing, the brake safety work.