JPS56131715A - Operation of oil-pressure vibrating type pile driver - Google Patents
Operation of oil-pressure vibrating type pile driverInfo
- Publication number
- JPS56131715A JPS56131715A JP3270680A JP3270680A JPS56131715A JP S56131715 A JPS56131715 A JP S56131715A JP 3270680 A JP3270680 A JP 3270680A JP 3270680 A JP3270680 A JP 3270680A JP S56131715 A JPS56131715 A JP S56131715A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- valve
- time
- frequency
- vibrating
- 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
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
PURPOSE: To prevent the occurrence of resonance by avoiding the vibration of an oil-pressure vibrator caused at the natural frequency of boom by a method in which the main switch valve at the time of start-up is situated at its operating position after the operation of a vibrating valve but at its neutral position at the time of stoppage, and then the vibrating valve is stopped.
CONSTITUTION: When a vibrating valve 18 is operated at the time of starting, pressuired oil is alternately supplied to cylinder chambers 14a and 14b and an oil-pressure vibrator 13 vibrates at the switching frequency of the vibrating valve 18. When the switching frequency of the vibrating valve 18 exceeds the natural frequency fa of a crane boom 2, the main switch valve 7 is switched to its operating position. At the time of stoppage, the main switch valve 17 is first restored to its neutral position and then the vibrating valve 18 is stopped. Since the oil-pressure vibrator 13 vibrates at a frequency exceeding the natural frequency fa and also stops at the frequency at the time of the steady state, no resonance at the natural frequency fa of the crane boom 2 takes place in the oil-pressure vibrator 13, and no resonance, therefore, occurs in the crane boom 2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3270680A JPS56131715A (en) | 1980-03-17 | 1980-03-17 | Operation of oil-pressure vibrating type pile driver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3270680A JPS56131715A (en) | 1980-03-17 | 1980-03-17 | Operation of oil-pressure vibrating type pile driver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56131715A true JPS56131715A (en) | 1981-10-15 |
JPS6338501B2 JPS6338501B2 (en) | 1988-08-01 |
Family
ID=12366280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3270680A Granted JPS56131715A (en) | 1980-03-17 | 1980-03-17 | Operation of oil-pressure vibrating type pile driver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56131715A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4850436A (en) * | 1986-01-31 | 1989-07-25 | Hayashi Manufacturing Company, Ltd. | Attached pulverulent and granular material shake-down apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0612726Y2 (en) * | 1989-02-28 | 1994-04-06 | 株式会社トーメー | Eye position measuring instrument |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51111705A (en) * | 1975-03-28 | 1976-10-02 | Kensetsu Kikai Chiyousa Kk | Vibration pole dreving method |
-
1980
- 1980-03-17 JP JP3270680A patent/JPS56131715A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51111705A (en) * | 1975-03-28 | 1976-10-02 | Kensetsu Kikai Chiyousa Kk | Vibration pole dreving method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4850436A (en) * | 1986-01-31 | 1989-07-25 | Hayashi Manufacturing Company, Ltd. | Attached pulverulent and granular material shake-down apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6338501B2 (en) | 1988-08-01 |
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