What areas need to set up warning signs chain hoists

Chain hoist is small  hoist equipment, lifting machinery used as safety-critical, the following chain hoists to introduce you to the field devices and the use of what needs to set up warning signs.
Chain hoists and stop signs is prohibited under normal circumstances people are not allowed to set up some kind of action, signs, generally use the red flag. Chain hoists device itself required to set this flag places are:
(A) emergency switch;
(2) buffers, sweeping track plate, rail end stops and the rising limit position limiter;
(3) size of the car slide wire, cable reels.
(1) hook pulley side,lever hoist extract device and lifting beam;
(2) chain hoists turn tail and balance weight;
And with the use of a crane hoists the following places also need to have warning signs
(1) jib boom crane jib head;
(2) Crane extended leg and cowcatcher;
(3) In addition to mobile and railway cranes, but with less than 2m from the ground and overhaul of the cab bottom hoists,manual hoist trolleys balance beam and a lower beam on both sides;
(4) The end beam bridge crane outside (it was OK channel) and end surfaces, mobile cab at the interface between the platform and ladder protective railing.
Lifting equipment operators should strictly follow the rules and regulations work equipment has to ensure work safety.