JPS6439390U - - Google Patents
Info
- Publication number
- JPS6439390U JPS6439390U JP13338387U JP13338387U JPS6439390U JP S6439390 U JPS6439390 U JP S6439390U JP 13338387 U JP13338387 U JP 13338387U JP 13338387 U JP13338387 U JP 13338387U JP S6439390 U JPS6439390 U JP S6439390U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- piston rod
- axis
- members
- pin
- 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
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
Landscapes
- Jib Cranes (AREA)
- Actuator (AREA)
Description
第１図ａは本考案に係る伸縮装置の一実施例を
示す垂直断面図、第１図ｂはその水平断面図、第
２図はこれをクレーンに使用した状態を示す断面
図、第３図ａはその油圧シリンダに軸圧縮荷重お
よび曲げ力が作用した状態を模式的に示す説明図
、第３図ｂはピン軸線をずらさないように構成し
た場合において油圧シリンダに軸圧縮荷重および
曲げ力が作用した状態を模式的に示す説明図、第
４図はピンのずれ量と座屈荷重との関係を示すグ
ラフ、第５図はピンのずれ量と回動固定装置に作
用する力との関係を示すグラフ、第６図は別の実
施例を示す垂直断面図である。
１……外箱（部材）、２……内箱（部材）、３
……シリンダ、４……チユーブ、５……ピストン
ロツド、５ａ……ピストンロツド軸線、１１，２
１……ピン、１１ａ，２１ａ……ピン軸線。
Fig. 1a is a vertical sectional view showing an embodiment of the telescopic device according to the present invention, Fig. 1b is a horizontal sectional view thereof, Fig. 2 is a sectional view showing the state in which this is used in a crane, and Fig. 3 Fig. 3a is an explanatory diagram schematically showing a state in which an axial compressive load and a bending force are applied to the hydraulic cylinder, and Fig. 3b is an explanatory diagram schematically showing a state in which an axial compressive load and a bending force are applied to the hydraulic cylinder when the pin axis is configured not to shift. An explanatory diagram schematically showing the applied state, Figure 4 is a graph showing the relationship between the amount of pin displacement and buckling load, and Figure 5 is the relationship between the amount of pin displacement and the force acting on the rotation fixing device. FIG. 6 is a vertical sectional view showing another embodiment. 1... Outer box (part), 2... Inner box (part), 3
...Cylinder, 4...Tube, 5...Piston rod, 5a...Piston rod axis, 11, 2
1...Pin, 11a, 21a...Pin axis line.
Claims (1)
され、前記２つの部材の一方にシリンダのピスト
ンロツドが連結されているとともに、他方に前記
シリンダのチユーブが連結されていて、これら部
材の一方とシリンダのピストンロツドとの連結お
よび部材の他方とシリンダのチユーブとの連結の
少なくとも一方が、軸線をピストンロツド軸線に
対して直交する方向へ向けるようにして配設され
たピンによつて回動自在に連結されている伸縮装
置において、前記ピンが、その軸線を前記ピスト
ンロツド軸線から前記荷重によつてシリンダがた
わむ側へずらせて配設されていることを特徴とす
る伸縮装置。 A cylinder is interposed between two members on which a load acts, a piston rod of the cylinder is connected to one of the two members, a tube of the cylinder is connected to the other, and one of these members and the cylinder are connected. At least one of the connection with the piston rod and the connection between the other member and the tube of the cylinder are rotatably connected by a pin disposed so that the axis is directed in a direction perpendicular to the piston rod axis. 1. A telescopic device characterized in that the pin is disposed with its axis shifted from the piston rod axis toward a side where the cylinder is deflected by the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987133383U JPH0318470Y2 (en) | 1987-08-31 | 1987-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987133383U JPH0318470Y2 (en) | 1987-08-31 | 1987-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6439390U true JPS6439390U (en) | 1989-03-09 |
| JPH0318470Y2 JPH0318470Y2 (en) | 1991-04-18 |
Family
ID=31391191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987133383U Expired JPH0318470Y2 (en) | 1987-08-31 | 1987-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318470Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010202317A (en) * | 2009-03-02 | 2010-09-16 | Kobe Steel Ltd | Buckling prevention mechanism for expansion/contraction cylinder |
| WO2013067552A1 (en) * | 2011-11-08 | 2013-05-16 | Palfinger Ag | Crane, in particular loading crane for a vehicle |
| JP2017030889A (en) * | 2015-07-29 | 2017-02-09 | コベルコ建機株式会社 | Telescopic beam, and fixing member of cylinder device |
-
1987
- 1987-08-31 JP JP1987133383U patent/JPH0318470Y2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010202317A (en) * | 2009-03-02 | 2010-09-16 | Kobe Steel Ltd | Buckling prevention mechanism for expansion/contraction cylinder |
| WO2013067552A1 (en) * | 2011-11-08 | 2013-05-16 | Palfinger Ag | Crane, in particular loading crane for a vehicle |
| JP2017030889A (en) * | 2015-07-29 | 2017-02-09 | コベルコ建機株式会社 | Telescopic beam, and fixing member of cylinder device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0318470Y2 (en) | 1991-04-18 |
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