JPS5690101A - Power unit for hydraulic elevator - Google Patents
Power unit for hydraulic elevatorInfo
- Publication number
- JPS5690101A JPS5690101A JP16687379A JP16687379A JPS5690101A JP S5690101 A JPS5690101 A JP S5690101A JP 16687379 A JP16687379 A JP 16687379A JP 16687379 A JP16687379 A JP 16687379A JP S5690101 A JPS5690101 A JP S5690101A
- Authority
- JP
- Japan
- Prior art keywords
- power unit
- muffler
- valve
- pressure pulsation
- pulsation generated
- 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 reduce the pressure pulsation generated in a power unit for a hydraulic elevator without making the power unit larger by connecting a stop valve between the controlling valve and the muffler.
CONSTITUTION: In a power unit 1, a controlling valve 9 and a muffler 11 are connected so that the valve 9 is on the side of a pump 6 and the muffler 11 is on the side of a hydraulic jack 14, and a stop valve 13 is connected between the valve 9 and the muffler 11. When the hydraulic jack 14 is operated, the pump 6 causes the oil in an oil tank 4 to be supplied through the controlling valve 9, the stop valve 13 and the muffler 11 to the hydraulic jack 14. On doing this, the pressure pulsation generated by the pump 6 or the cavitation pressure pulsation generated by the controlling valve 9 can be reduced at the muffler 11, and at the same time the pressure pulsation generated by the stop valve 13 can be reduced, so that a low-noise power unit can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16687379A JPS5690101A (en) | 1979-12-24 | 1979-12-24 | Power unit for hydraulic elevator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16687379A JPS5690101A (en) | 1979-12-24 | 1979-12-24 | Power unit for hydraulic elevator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5690101A true JPS5690101A (en) | 1981-07-22 |
Family
ID=15839206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16687379A Pending JPS5690101A (en) | 1979-12-24 | 1979-12-24 | Power unit for hydraulic elevator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5690101A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59163283A (en) * | 1983-03-08 | 1984-09-14 | 株式会社東芝 | Hydraulic elevator |
WO2000045673A1 (en) * | 1999-02-05 | 2000-08-10 | Mccord Winn Textron, Inc. | Pneumatic system sound attenuator |
-
1979
- 1979-12-24 JP JP16687379A patent/JPS5690101A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59163283A (en) * | 1983-03-08 | 1984-09-14 | 株式会社東芝 | Hydraulic elevator |
JPH0471835B2 (en) * | 1983-03-08 | 1992-11-16 | Tokyo Shibaura Electric Co | |
WO2000045673A1 (en) * | 1999-02-05 | 2000-08-10 | Mccord Winn Textron, Inc. | Pneumatic system sound attenuator |
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