JPS56150231A - Suction mouth controller for sludge dredger - Google Patents
Suction mouth controller for sludge dredgerInfo
- Publication number
- JPS56150231A JPS56150231A JP5263980A JP5263980A JPS56150231A JP S56150231 A JPS56150231 A JP S56150231A JP 5263980 A JP5263980 A JP 5263980A JP 5263980 A JP5263980 A JP 5263980A JP S56150231 A JPS56150231 A JP S56150231A
- Authority
- JP
- Japan
- Prior art keywords
- suction mouth
- difference
- sludge layer
- sludge
- thickness
- 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
Abstract
PURPOSE: To efficiently perform dredging work by a method in which the thickness of sludge layer a given distance ahead from a suction mouth is detected and when the suction mouth reaches the position, its position is controlled in such a way as to situate it at an optimum position.
CONSTITUTION: Plural sludge layer detectors 8 are provided l meters ahead a suction mouth 7, by which a sludge layer thickness DH from the lower edge of the suction mouth to the surface of the sludge is detected. Signal from the detectors 8 is put in the first arithmetic unit 9 where a difference d between the suction mouth's height DS and the sludge layer's thickness DH is calculated. The output signal of the difference d is then put in the second arithmetic unit from which a controlled variable by which the difference d becomes zero when the suction mouth goes forward by l meters is output. On the basis of the desired controlled variable, a control valve 12 is controlled through a controller 11, and a wire hanging mechanism (not illustrated) is operated and the suction mouth 7 moves vertically in such a way as to make the said difference d zero.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263980A JPS56150231A (en) | 1980-04-21 | 1980-04-21 | Suction mouth controller for sludge dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263980A JPS56150231A (en) | 1980-04-21 | 1980-04-21 | Suction mouth controller for sludge dredger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56150231A true JPS56150231A (en) | 1981-11-20 |
Family
ID=12920396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5263980A Pending JPS56150231A (en) | 1980-04-21 | 1980-04-21 | Suction mouth controller for sludge dredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56150231A (en) |
-
1980
- 1980-04-21 JP JP5263980A patent/JPS56150231A/en active Pending
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