The present invention relates to a device for maintaining tension on the boom pole in a cargo crane, which is configured to tighten a wire with minimal force to prevent the boom pole from drooping while extending the boom pole which is folded in multistage. To achieve the above purpose, the device for maintaining the tension of the boom pole in a cargo crane which is configured to maintain the tension of a boom pole (1) by winding a wire (2) an end of which is fixated to a drum (3) to maintain the tension of the spread boom pole (1), the device comprises: a latch (4) which is installed to transmit to or block the power from with a clutch at a side of the drum (3); a movable member (5) which is installed to be idling at a side of the latch; a movable claw (6) which is hinge combined to the movable member to rotate the latch by being hooked by the latch (4) at the movement of the movable member and the hooking state with the latch (4) is released at the return; a hydraulic cylinder (9) which is operated by a driving source of the hydraulic pump; a link (10) which is connected between a load (9a) and the movable member (5); and a stopper claw (12) which maintains a rotating state of the drum (3) by being hooked to the latch (4) installed to a side panel (11) located on the opposite side of the movable claw (6).
TENSION MAINTAINING DEVICE FOR BOOM OF CARGO CRANE
21.08.2015
Patent
Elektronische Ressource
Koreanisch
IPC: | B66C Krane , CRANES |