JPS56147904A - Vibration generating unit of hydraulic type - Google Patents
Vibration generating unit of hydraulic typeInfo
- Publication number
- JPS56147904A JPS56147904A JP5219480A JP5219480A JPS56147904A JP S56147904 A JPS56147904 A JP S56147904A JP 5219480 A JP5219480 A JP 5219480A JP 5219480 A JP5219480 A JP 5219480A JP S56147904 A JPS56147904 A JP S56147904A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- oil
- vibration
- supply
- members
- 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.)
- Granted
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To generate a sine wave form vibration under a low noise by placing one of two members to the center of vibration amplitude to the other member in a unit provided with a double acting type hydraulic actuator which permits the two members to make a relative reciprocating motion.
CONSTITUTION: A double acting type hydraulic actuator A is provided with a piston 5 which makes a reciprocating motion in a cylinder 2, and driven under control by a supply and discharge control unit B. The supply and discharge control unit B feeds a pressure oil to an oil supply chamber 9 of a rotary valve 9, and also rotates a rotary valve 11 with a hydraulic motor, thereby reciprocating a piston 5 under vibration, supplying and discharging an actuating oil to each oil chamber 3 and 4 respectively. Below a cylinder 2 are installed hydraulic springs 15 and 16 consisting of a liquid vessel 18 and a piston 19 which can slide freely in a hollow place of the oil vessel 8. The piston 9 is connected to a piston rod 6 as one piece. This construction provides an energized force which maintains the piston 5 at the center of the amplitude of vibration.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5219480A JPS56147904A (en) | 1980-04-18 | 1980-04-18 | Vibration generating unit of hydraulic type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5219480A JPS56147904A (en) | 1980-04-18 | 1980-04-18 | Vibration generating unit of hydraulic type |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56147904A true JPS56147904A (en) | 1981-11-17 |
JPS6363762B2 JPS6363762B2 (en) | 1988-12-08 |
Family
ID=12907977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5219480A Granted JPS56147904A (en) | 1980-04-18 | 1980-04-18 | Vibration generating unit of hydraulic type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56147904A (en) |
-
1980
- 1980-04-18 JP JP5219480A patent/JPS56147904A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6363762B2 (en) | 1988-12-08 |
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