| 摘要 |
FIELD: transport engineering; lifting facilities. SUBSTANCE: proposed hydraulic lift comprises handle with telescopic boom installed on slewing column of support frame for setting from traveling folded position into working rigged out position. Handle is hinge coupled with base of boom provided with telescopic section, cradle suspended from boom with position pickup defining relative position of cradle relative to horizontal and orientation system with slave mechanism, outriggers and pump to feed working liquid into hydraulic system of lift. According to invention, boom is furnished with second telescopic section to head of which limit switch is connected to indicated cradle is mounted. Cradle is made detachable and is furnished with device indicating tear off of cradle from ground, and cradle overload force sensor located in lower part of cradle. Said sensor is installed on structure consisting of upper and lower bases and ties forming articulated parallelogram for transmission of load to sensor and connected with V-shaped bracket hinge coupled with cradle fork connected to head of second telescopic section. First telescopic section is furnished with limit switch to limit height of cradle lifting. Limit switches installed on outriggers serve to indicate that outriggers are set in position. Second hydraulic pump installed on automobile serves to feed working liquid into cradle orientation system. Lift is furnished with split joints of electric and hydraulic equipment for disconnecting the cradle when lift operates as manipulator and fastening of hook hanger to head of second telescopic section under said operating conditions and overload safeguard secured on slewing column and provided with pressure transmitter operating when maximum load at lifting is exceeded. Invention provides convenience in operation of using the lift as crane-manipulator and for lifting. EFFECT: improved safety in operation. 6 dwg
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