JPS57153706A - Control of scraping machine for precipitated sand - Google Patents

Control of scraping machine for precipitated sand

Info

Publication number
JPS57153706A
JPS57153706A JP3665481A JP3665481A JPS57153706A JP S57153706 A JPS57153706 A JP S57153706A JP 3665481 A JP3665481 A JP 3665481A JP 3665481 A JP3665481 A JP 3665481A JP S57153706 A JPS57153706 A JP S57153706A
Authority
JP
Japan
Prior art keywords
scraping machine
load current
sand
control
precipitated
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
JP3665481A
Other languages
Japanese (ja)
Inventor
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3665481A priority Critical patent/JPS57153706A/en
Publication of JPS57153706A publication Critical patent/JPS57153706A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To control the precipitated sand scraping machine so as to eliminate idle operation thereof by expecting the precipitated sand amount in a sand precipitation basin from a load current of the scraping machine and a stop time before operation to operate and stop the scraping machine.
CONSTITUTION: The load current of the scraping machine 2 is detected by a converter 1 and the output thereof is applied to an operation treatment apparatus 4 through a current transducer 3. In this apparatus, from the detected value Ih of the load current after the scraping machine 2 is operated, a preceeding operations suspension time Ta, a preliminarily set optimum load current value In and an engagement part K, the next suspension time Tb is operated according to an operation formula Tb=(Ta/Ih)×In×K and the output signal thereof is sent to a control circuit 6 and the control circuit 6 carries out opening and closing of a contact 7 for operating and stopping the scraping machine 2. By this method, optimum operation control of the scraping machine can be efficiently carried out corresponding to the precipitation condition of a sand precipitation condition.
COPYRIGHT: (C)1982,JPO&Japio
JP3665481A 1981-03-16 1981-03-16 Control of scraping machine for precipitated sand Pending JPS57153706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3665481A JPS57153706A (en) 1981-03-16 1981-03-16 Control of scraping machine for precipitated sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3665481A JPS57153706A (en) 1981-03-16 1981-03-16 Control of scraping machine for precipitated sand

Publications (1)

Publication Number Publication Date
JPS57153706A true JPS57153706A (en) 1982-09-22

Family

ID=12475837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3665481A Pending JPS57153706A (en) 1981-03-16 1981-03-16 Control of scraping machine for precipitated sand

Country Status (1)

Country Link
JP (1) JPS57153706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490854B1 (en) * 2002-03-29 2005-05-24 주식회사 듀라 System for controlling work of sludge collecting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490854B1 (en) * 2002-03-29 2005-05-24 주식회사 듀라 System for controlling work of sludge collecting machine

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