Title:
EXTENSION/HOUSING DEVICE FOR CRANE JIB
Document Type and Number:
Japanese Patent JPH05139692
Kind Code:
A
Abstract:
PURPOSE: To easily and surely house a jib without influence of various conditions such as a boom length and angle, and vehicle body levelness.
CONSTITUTION: In a, hauling process in jib housing as well as a suspending process in jib extension, a jib hauling rope 10 is stretched between a boom 1 and a jib 2. By driving winding and unwinding of the rope 10 on a winch 9, torsional moment is applied to the jib 2 to fall down in the boom side direction, and while this torsional moment is received by stoppers 14, 15 the jib 2 is moved between a suspending position and a housing position.
Inventors:
MIYAZAWA HIROSHI
Application Number:
JP30608491A
Publication Date:
June 08, 1993
Filing Date:
November 21, 1991
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B66C23/70; (IPC1-7): B66C23/70
Attorney, Agent or Firm:
Etsushi Kotani (3 outside)