Title:
SWING ANGLE MEASURING DEVICE OF ROPE TROLLEY TYPE CRANE AND SWING ANGLE MEASURING METHOD
Document Type and Number:
Japanese Patent JP2015166283
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a swing angle measuring device of a rope trolley type crane and a swing angle measuring method which facilitates power supply and is hardly affected by an impact occurring upon the loading.SOLUTION: A swing angle measuring device 27 of a rope trolley type crane which includes a trolley, a pair of sheaves (21, 22) arranged on the trolley and a suspension tool 16 suspended between the pair of sheaves (21, 22) by a rope 12 via the pair of sheaves (21, 22) includes: a plurality of force sensors 30 which are arranged around a sheave shaft 31 of a sheave and measure a force generated on the sheave shaft 31; and a control device 20 which determines a direction of a load F generated on the sheave shaft 31 from a ratio of respective forces measured by the plurality of force sensors 30 arranged around the sheave shaft 31, determines an angle θformed by the direction of the load F generated on the sheave shaft 31 and a horizontal shaft H and calculates a swing angle θ from an equation of θ=90-2θ.
Inventors:
KANBAYASHI TAKASHI
HAYASHI TORU
SHIMODA SUSUMU
NISHIKAWA TAKAAKI
HAYASHI TORU
SHIMODA SUSUMU
NISHIKAWA TAKAAKI
Application Number:
JP2014041399A
Publication Date:
September 24, 2015
Filing Date:
March 04, 2014
Export Citation:
Assignee:
IHI TRANSPORT MACHINERY CO LTD
International Classes:
B66C13/22; B65G65/04; B65G67/60; B66C11/16
Domestic Patent References:
| JPH02112690U | 1990-09-10 | |||
| JPH0789691A | 1995-04-04 | |||
| JPH04112190A | 1992-04-14 |
Attorney, Agent or Firm:
Yamada Patent Office