JPS5693928A - Driving device for grab bucket - Google Patents

Driving device for grab bucket

Info

Publication number
JPS5693928A
JPS5693928A JP16934779A JP16934779A JPS5693928A JP S5693928 A JPS5693928 A JP S5693928A JP 16934779 A JP16934779 A JP 16934779A JP 16934779 A JP16934779 A JP 16934779A JP S5693928 A JPS5693928 A JP S5693928A
Authority
JP
Japan
Prior art keywords
opening
closing
rope
supporting
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16934779A
Other languages
Japanese (ja)
Inventor
Mineo Hagi
Hitoshi Kawajiri
Yoshio Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP16934779A priority Critical patent/JPS5693928A/en
Publication of JPS5693928A publication Critical patent/JPS5693928A/en
Pending legal-status Critical Current

Links

Landscapes

  • Load-Engaging Elements For Cranes (AREA)

Abstract

PURPOSE: To prevent the unintentional opening and closing of a grab bucket in case of its ascent and descent by a method wherein the bucket is lifted and dropped only by driving a motor for supporting and opened and closed only by driving a motor for opening and closing.
CONSTITUTION: When only a motor 5 for supporting is driven in the winding-down direction and a winding drum 9 for supporting is turned, a supporting rope 21 and an opening and closing rope 22 are slackened at the same rope speed. Thus, a sheave 19 for the supporting rope and a sheave 20 for the opening and closing rope fall holding a regular interval, and a grab bucket 13 falls keeping a closed condition with the falls of both sheaves. When the motor 5 for supporting is stopped, only a motor 10 for opening and closing is driven in the rewinding direction and a winding drum 12 for opening and closing is rotated, only the opening and closing rope 22 is slackened, and only the sheave 20 for the opening and closing rope falls. Thus, only a shell 14 is opened under a condition that the grab bucket 13 is stopped at the location, and the grabe bucket 13 is opened.
COPYRIGHT: (C)1981,JPO&Japio
JP16934779A 1979-12-27 1979-12-27 Driving device for grab bucket Pending JPS5693928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16934779A JPS5693928A (en) 1979-12-27 1979-12-27 Driving device for grab bucket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16934779A JPS5693928A (en) 1979-12-27 1979-12-27 Driving device for grab bucket

Publications (1)

Publication Number Publication Date
JPS5693928A true JPS5693928A (en) 1981-07-29

Family

ID=15884872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16934779A Pending JPS5693928A (en) 1979-12-27 1979-12-27 Driving device for grab bucket

Country Status (1)

Country Link
JP (1) JPS5693928A (en)

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