FIELD: transport.
SUBSTANCE: invention relates to lifting devices and intended for lifting cranes with telescopic boom. Control system contains safety instrument, control equipment, contactless two-axes handle position resolver, load, boom pitch angle, boom length, azimuth, sling rope length sensors and electrically controlled proportional distributive valves. When lifting crane is working hook travel in vertical plane is set by signals proportional to speeds of boom reach and hook suspension height changing. Distributive valves control is performed depending on result of comparison of perest and actual speeds of boom reach and hook suspension height changing, on crane operation limiting parameters, possibility of their matching from condition of providing safety crane operation.
EFFECT: reduced number of controlling actions, higher accuracy of hook travel, better crane operator working conditions.
2 cl, 3 dwg
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