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hbleoelee

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https://www.sumobrain.com/patent ... em/JPS5847807A.html
------------------------

Title: FIXED POSITION STOPPING CONTROL SYSTEM FOR TRUCK IN RELATION TO BUCKET OF CABLE CRANE Document Type and Number: Japanese Patent JPS5847807 Kind Code: A

Abstract:
PURPOSE: To exactly stop a truck with respect to a bucket position by a method in which the deflecting angle of a main cable is detected, the desired landing position of a bucket is calculated by a micro-computer on the basis of the detection signal, and the speed of the truck is controlled based on the desired landing position.

CONSTITUTION: A deflecting angle of a main cable 4 of a cable crane is detected by a main cable angle detector 12, its detection signal is put in a micro computer 9 mounted on a truck 3, and the intended landing position of a bucket 7 is calculated. After being loaded with concrete, the truck 3 is advanced at high speed and then its speed is decreased when it reaches a deceleration point obtained by the micro computer 9 on the intended landing position of the bucket 7. Then, when 9 photoelectric switch 14a of the truck 3 detects a reflection plate 13b of the bucket 7, the truck 7 is decelerated until low-speed running, and when half of the distance between the photoelectric switches 14a and 14b conincides with the running distance from the detection point of the bucket detected by a running distance detector 10, the truck 7 is stopped.

Inventors: Takano, Mikio
Kosaka, Shuichi
Miura, Masayuki
Ishikawa, Hiroshi
Shibata, Kenji
Miyajima, Toshikazu
Application Number: JP1981000143963 Publication Date: March 19, 1983 Filing Date: September 14, 1981 Export Citation: Click for automatic bibliography generation Help Assignee: KAJIMA CORP
International Classes:E02B7/00; B65G63/00; B65G67/24; B66C13/22; (IPC1-7): B65G67/24; B66C13/18; E02B3/10