Support structure for hoist used for lifting load, has compression spring that is provided to apply force to steering pulley and/or locking unit so as to move steering pulley and/or locking unit from setting position

摘要

The support structure has a steering pulley (5) which is locked to control a suspension chain (10). The steering pulley and locking unit (57) are arranged to each other and moved relative to a down position. A compression spring (55) is provided to apply force to the steering pulley and/or the locking unit so as to move the steering pulley and/or the locking unit from setting position. An independent claim is included for hoist.