JPH0336023U - - Google Patents
Info
- Publication number
- JPH0336023U JPH0336023U JP9719289U JP9719289U JPH0336023U JP H0336023 U JPH0336023 U JP H0336023U JP 9719289 U JP9719289 U JP 9719289U JP 9719289 U JP9719289 U JP 9719289U JP H0336023 U JPH0336023 U JP H0336023U
- Authority
- JP
- Japan
- Prior art keywords
- jack
- tightening
- reaction force
- girder
- relatively long
- 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
- Actuator (AREA)
- Bridges Or Land Bridges (AREA)
Description
第１図は本考案の実施例を示す断面図、第２図
は本考案が適用される従来の海上作業台の側面図
、第３図は従来の昇降ジヤツキの取付け態様を示
す側面図である。
２０……シリンダ、２１，２２……壁部、２３
……中間壁、２４……第１の室、２５……第２の
室、２６……第１のピストン、２７……第１のピ
ストンロツド、２９……第２のピストン、３０…
…第２のピストンロツド。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a side view of a conventional offshore work platform to which the present invention is applied, and Fig. 3 is a side view showing the manner in which a conventional lifting jack is installed. . 20... Cylinder, 21, 22... Wall, 23
... intermediate wall, 24 ... first chamber, 25 ... second chamber, 26 ... first piston, 27 ... first piston rod, 29 ... second piston, 30 ...
...Second piston rod.
Claims (1)
の締付ジヤツキを備え、その第１の締付ジヤツキ
は反力桁を支持し、その反力桁には作業台が連結
され、その反力桁と第２の締付ジヤツキとを相対
移動させるための昇降装置用の液圧ジヤツキにお
いて、前記第２の締付ジヤツキと反力桁とを相対
的に移動されて昇降作動を行う比較的にストロー
クの長いジヤツキと遊動を吸収する比較的にスト
ロークの短いジヤツキとが１つのシリンダに組合
されていることを特徴とする昇降装置用の液圧ジ
ヤツキ。 first and second surrounding a vertically extending fixed leg;
a tightening jack, the first tightening jack supports a reaction force girder, a work platform is connected to the reaction force girder, and the reaction force girder and the second tightening jack are moved relative to each other. In a hydraulic jack for a lifting device, the second tightening jack and the reaction girder are moved relative to each other to perform the lifting operation, and the jack has a relatively long stroke, and the jack has a relatively long stroke to absorb free movement. A hydraulic jack for a lifting device, characterized in that a short jack is combined into one cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9719289U JPH0419073Y2 (en) | 1989-08-22 | 1989-08-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9719289U JPH0419073Y2 (en) | 1989-08-22 | 1989-08-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336023U true JPH0336023U (en) | 1991-04-09 |
| JPH0419073Y2 JPH0419073Y2 (en) | 1992-04-28 |
Family
ID=31646344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9719289U Expired JPH0419073Y2 (en) | 1989-08-22 | 1989-08-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419073Y2 (en) |
-
1989
- 1989-08-22 JP JP9719289U patent/JPH0419073Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0419073Y2 (en) | 1992-04-28 |