JPS55123824A - Continuous type unloader - Google Patents
Continuous type unloaderInfo
- Publication number
- JPS55123824A JPS55123824A JP3360979A JP3360979A JPS55123824A JP S55123824 A JPS55123824 A JP S55123824A JP 3360979 A JP3360979 A JP 3360979A JP 3360979 A JP3360979 A JP 3360979A JP S55123824 A JPS55123824 A JP S55123824A
- Authority
- JP
- Japan
- Prior art keywords
- elevator
- hydraulic circuit
- control
- piston
- moment
- 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
- Ship Loading And Unloading (AREA)
Abstract
PURPOSE: To automatically control an elevator in a vertical posture convenient for taking in and out from the opening part of ship's hatch by arranging a posture controlling circuit onto the hydraulic circuit for fluctuating a bucket elevator.
CONSTITUTION: A bucket elevator 1 is swingingly supported onto the pivotal shaft 5 of a boom 2 and operated by a cylinder 7 connected with a hydraulic circuit 8. When the control valve 10 on the hydraulic circuit 8 side is positioned at neutral in blockage, and the control valve 15 on the auxiliary circuit 9 side is opened, a low oil pressure P is applied to the both sides of the piston of a cylinder 7 through a pressure reducing valve 18. The moment W×L due to the weight of an elevator 1 balances with the moment (S1-S2)×P×R due to the difference of acting surface S1-S2 on the both sides of the piston, and the elevator 1 is positioned in nearly vertical situation. When the pressure P is varied by the control of the pressure reducing valve 18, the vertical situation of the elevator 1 can be controlled finely.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3360979A JPS55123824A (en) | 1979-03-20 | 1979-03-20 | Continuous type unloader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3360979A JPS55123824A (en) | 1979-03-20 | 1979-03-20 | Continuous type unloader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55123824A true JPS55123824A (en) | 1980-09-24 |
Family
ID=12391196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3360979A Pending JPS55123824A (en) | 1979-03-20 | 1979-03-20 | Continuous type unloader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55123824A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6061424A (en) * | 1983-09-14 | 1985-04-09 | Hitachi Ltd | Control of continuous type unloader |
JPS60170327U (en) * | 1984-04-18 | 1985-11-12 | 住友重機械工業株式会社 | Bucket elevator type continuous unloader |
JPS60170328U (en) * | 1984-04-20 | 1985-11-12 | 住友重機械工業株式会社 | Bucket elevator type continuous unloader |
JP2014227283A (en) * | 2013-05-24 | 2014-12-08 | 株式会社日立プラントメカニクス | Automatic retreat system of unloader |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52143680A (en) * | 1976-05-24 | 1977-11-30 | Sumitomo Heavy Ind Ltd | Cooperation control device for bucket elevator type unloader |
-
1979
- 1979-03-20 JP JP3360979A patent/JPS55123824A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52143680A (en) * | 1976-05-24 | 1977-11-30 | Sumitomo Heavy Ind Ltd | Cooperation control device for bucket elevator type unloader |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6061424A (en) * | 1983-09-14 | 1985-04-09 | Hitachi Ltd | Control of continuous type unloader |
JPH0236489B2 (en) * | 1983-09-14 | 1990-08-17 | Hitachi Ltd | |
JPS60170327U (en) * | 1984-04-18 | 1985-11-12 | 住友重機械工業株式会社 | Bucket elevator type continuous unloader |
JPH0141699Y2 (en) * | 1984-04-18 | 1989-12-08 | ||
JPS60170328U (en) * | 1984-04-20 | 1985-11-12 | 住友重機械工業株式会社 | Bucket elevator type continuous unloader |
JPH0141700Y2 (en) * | 1984-04-20 | 1989-12-08 | ||
JP2014227283A (en) * | 2013-05-24 | 2014-12-08 | 株式会社日立プラントメカニクス | Automatic retreat system of unloader |
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