Falling preventive mechanism and lift

The utility model provides a falling preventive mechanism and lift relates to lift transportation equipment's technical field, the car subassembly from falling including being used for preventing: tensioning means, spring unit and frame, spring unit includes: spring holder, spring beam and expanding spring, tensioning means with the spring beam is connected, makes the spring beam is in tensile state, the expanding spring cover is established on the spring beam, just expanding spring sets up the spring holder with between the spring beam, the spring beam sets up along its length direction telescopic in the spring holder when the spring beam is in tensile state, make expanding spring is in be in compression state in the spring pedestal, so that the spring beam contacts or keeps away from theframe can't stop when the proruption car subassembly of existence falls among the prior art if solved for the technical problem that products break in the car subassembly and staff received the injury. 本实用新型提供了种防坠落机构及升降机，涉及升