JPS5640406A - Detector for loosening of chain of sludge raker - Google Patents
Detector for loosening of chain of sludge rakerInfo
- Publication number
- JPS5640406A JPS5640406A JP11752879A JP11752879A JPS5640406A JP S5640406 A JPS5640406 A JP S5640406A JP 11752879 A JP11752879 A JP 11752879A JP 11752879 A JP11752879 A JP 11752879A JP S5640406 A JPS5640406 A JP S5640406A
- Authority
- JP
- Japan
- Prior art keywords
- time
- loosening
- signal
- pulse
- endless chain
- 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
Links
Landscapes
- Measuring Magnetic Variables (AREA)
- Control Of Conveyors (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
PURPOSE: To raise the reliability of a method of detection for the loosening of chains of a sludge raker by a method in which the loosening of chains is electrically detected by detecting the time of stopping the rotary operation of a subsidiary shaft.
CONSTITUTION: The endless chain 1 is geared with the driving sprocket 2 and three pairs of the subsidiary sprockets 3, 4, and 5. When starting the operation of a sludge raker, the subsidary sprocket 3 is turned by rotation of the endless chain 1 and then the gear 8 turns, by which the gear tooth 10 of the gear 8 orderly comes near or separates from the adjacent switch 9 which outputs a pulse signal. The signal is put in the rotation detection circuit 11 to detect the rise of pulse and then put in the next time-measuring circuit 12, where the time from rising to breaking of pulse is detected and only when the time exceeds a given time, a signal corresponding to the time is output. The signal is compared with the signal from the setting circuit 15 at the comparator 14 and then the alarm device 16 is operated, permitting the loosening of the endless chain 1 to be detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11752879A JPS5640406A (en) | 1979-09-12 | 1979-09-12 | Detector for loosening of chain of sludge raker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11752879A JPS5640406A (en) | 1979-09-12 | 1979-09-12 | Detector for loosening of chain of sludge raker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5640406A true JPS5640406A (en) | 1981-04-16 |
Family
ID=14714012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11752879A Pending JPS5640406A (en) | 1979-09-12 | 1979-09-12 | Detector for loosening of chain of sludge raker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5640406A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61264772A (en) * | 1985-05-17 | 1986-11-22 | Nec Corp | Magnetoresistance effect element |
US5461527A (en) * | 1991-09-30 | 1995-10-24 | Kabushiki Kaisha Toshiba | Magneto-resistive head |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433357A (en) * | 1977-08-19 | 1979-03-12 | Noda Tsushin Kk | Method of monitoring normal operation of rotor |
-
1979
- 1979-09-12 JP JP11752879A patent/JPS5640406A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433357A (en) * | 1977-08-19 | 1979-03-12 | Noda Tsushin Kk | Method of monitoring normal operation of rotor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61264772A (en) * | 1985-05-17 | 1986-11-22 | Nec Corp | Magnetoresistance effect element |
US5461527A (en) * | 1991-09-30 | 1995-10-24 | Kabushiki Kaisha Toshiba | Magneto-resistive head |
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