L46A1 Mast Sectionthe functions of several tower crane safety devices
(1) Tower crane hook safety device
The safety device can prevent the sling on the hook from slipping automatically. 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 the sling is put, so as to prevent the sling from falling off automatically.
(2) Tower crane 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) The pit depth of the tower crane fixed foundation is 600mm, and the concrete is poured on the lime soil, the surface is flat, with waterproof and grounding protection measures.
