(1) Hook safety device: A safety device to prevent the sling on the hook from slipping automatically from the hook. That is to say, a pressing spring sheet is installed at the opening of the hook head to close the opening. The spring sheet can only be pressed down and opened, and can not be turned up after being put into the sling, so as to prevent the sling from falling off automatically.
(2) Drum safety device: Effective measures to prevent accidents caused by improper winding of steel wire rope beyond the drum. The methods are different, mainly welding a steel bar shroud outside the drum, limiting the wire rope to move only within the scope of the drum.
(3) Fixed foundation: The depth of the excavation pit is 600mm, concrete is poured on the lime soil, the surface is flat, with waterproof and grounding protection measures.
