OPERATION PLAN METHOD AND DEVICE OF CEILING TYPE CRANE AND CONTROL METHOD AND DEVICE OF CEILING TYPE CRANE

Japanese Patent JP2021172472

A

To provide a ceiling type crane capable of stopping a bucket at an end point while suppressing the vibration of the bucket and shortening a required moving time of the bucket.SOLUTION: An operation plan of a ceiling type crane is generated by the following procedure: a lowering speed schedule of a rope, in which after starting the lowering of a bucket from the maximum height at a lowering start time, the bucket passes through the height of a horizontal deceleration end point at a horizontal deceleration end time and reaches the height of an end point at the lowering speed 0 at a stop time, is obtained; a horizontal deceleration start time at which a phase of vibration of the bucket becomes 2π at the horizontal deceleration end time is obtained by using the length of the rope changed in accordance with the lowering speed schedule; a deceleration speed schedule, in which the moving speed becomes 0 from when the trolley starts deceleration from a predetermined moving speed at the horizontal deceleration start time until the horizontal deceleration end time, is obtained; and a position of a deceleration start point where the trolley passes at the horizontal deceleration start time and a position of a lowering start point where the trolley passes at the lowering start time are obtained based on the deceleration speed schedule.SELECTED DRAWING: Figure 5

IWASAKI TAKUYA
TODA IKUTO
KOYANO KAORU
KOGA TAKESHI
MAEBA TOMOHIDE

JP2020076040A

November 01, 2021

April 22, 2020

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KAWASAKI HEAVY IND LTD

B66C13/48; B66C13/22

Patent business corporation Yuko patent office

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