Title:
OVERLOAD CUTOUT DEVICE FOR CRANE TELESCOPIC GUIDE
Document Type and Number:
Japanese Patent JP3224090
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an overload cutout device for a telescopic guide that improves the durability of a crane for a prolonged lifetime through suppression of impulse force at its landing or collision.
SOLUTION: A crane is provided with a hoisting accessory attached to the lower end of a telescopic guide 7 suspended from a trolley 2 adapted to travel on girders 1. Over the trolley 2, a swing frame 3 is placed by means of first trunnions 4, to the upper surface of which swing arm the top of the telescopic guide 7 is connected by means of second trunnions 8 so that the swing frame 3 is roughly perpendicular to the swing direction of the telescopic guide 7. Between the trolley 2 and the swing frame 3, first swing damping means each made of a spring 23 and a damper 24 are interposed, whereas between the swing frame 3 and the telescopic guide 7, second swing damping means each also made of a spring 23 and a damper 4 are interposed.
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Inventors:
Hiroshi Asada
Haruhiko Tsuzuki
Haruhiko Tsuzuki
Application Number:
JP36718297A
Publication Date:
October 29, 2001
Filing Date:
December 25, 1997
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
B66C13/06; B66C17/04; (IPC1-7): B66C13/06; B66C17/04
Domestic Patent References:
| JP2290769A | ||||
| JP3116382U |
Attorney, Agent or Firm:
Yasunobu Yamauchi