JPH0535215Y2 - - Google Patents
Info
- Publication number
- JPH0535215Y2 JPH0535215Y2 JP1988136508U JP13650888U JPH0535215Y2 JP H0535215 Y2 JPH0535215 Y2 JP H0535215Y2 JP 1988136508 U JP1988136508 U JP 1988136508U JP 13650888 U JP13650888 U JP 13650888U JP H0535215 Y2 JPH0535215 Y2 JP H0535215Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- bearing
- rod
- bearings
- adjacent
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Bearings For Parts Moving Linearly (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は往復作動するピストンを内装し、ロツ
ドをシリンダヘツドに貫通した油圧シリンダの軸
受装置の改良に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a bearing device for a hydraulic cylinder, which is equipped with a reciprocating piston and has a rod extending through the cylinder head.
［従来の技術］
従来、この種の油圧シリンダでは、第３図のよ
うにシリンダヘツド３の荷重を均等化するため
に、軸受を複数に設けたものは周知であるが、
夫々の軸受１，２の内径は互いに同径に形成して
あり、従つて軸受１，２の中心線とロツドの軸芯
が平行である場合には、ロツドの表面と軸受１，
２とは均一に接触するように構成してある。[Prior Art] Conventionally, in this type of hydraulic cylinder, it is well known that a plurality of bearings are provided in order to equalize the load on the cylinder head 3 as shown in FIG.
The inner diameters of the respective bearings 1 and 2 are formed to be the same diameter. Therefore, when the center line of the bearings 1 and 2 and the axis of the rod are parallel, the surface of the rod and the bearing 1,
2 and is configured so as to be in uniform contact with each other.
［考案が解決しようとする課題］
しかし、経年使用すると軸受部は摩耗し、特に
油圧シリンダに対する横荷重作用時のロツド４の
撓み（第４図）あるいはシリンダヘツド３側軸受
１，２とロツド４との嵌合隙間及びピストン９側
軸受９ａ，９ｂとシリンダチユーブ７との嵌合隙
間によつて生ずるロツド４ピストン９の傾き（第
５図）でロツド側軸受部ではロツドと軸受ハウジ
ング部、ピストン側軸受部ではピストンとシリン
ダチユーブ内面が接触し、ロツド表面、シリンダ
チユーブ内面が傷付き、シールを損傷して油漏れ
を招く要因となる。[Problems to be solved by the invention] However, as the bearings are used over time, they wear out, especially when the rod 4 is bent when a lateral load is applied to the hydraulic cylinder (Fig. 4) or the cylinder head 3 side bearings 1 and 2 and the rod 4 are bent. Due to the inclination of the rod 4 piston 9 (Fig. 5) caused by the fitting clearance between the piston 9 side bearings 9a, 9b and the cylinder tube 7, the rod, bearing housing section, and piston At the side bearing, the piston and the inner surface of the cylinder tube come into contact, damaging the rod surface and the inner surface of the cylinder tube, damaging the seal and causing oil leakage.
［課題を解決するための手段］
このため本考案においては、ロツド側軸受部で
はロツドの傾き角に対応して複数の軸受部材に隣
接する軸受ハウジングの内面を外方に向かつて段
階的に大径にし、ピストン軸受部ではシール部材
を境にピストンの傾きに対応して複数の軸受部材
に隣接するピストン外径をピストン軸方向中心よ
り外方に向かつてその外径を段階的小径に設定し
た油圧シリンダの軸受装置を提案するものであ
る。[Means for Solving the Problems] Therefore, in the present invention, in the rod side bearing part, the inner surface of the bearing housing adjacent to the plurality of bearing members is turned outward in a stepwise manner corresponding to the inclination angle of the rod. In the piston bearing part, the outer diameter of the piston adjacent to multiple bearing members is set to a stepwise smaller diameter by moving outward from the center in the axial direction of the piston in response to the inclination of the piston with the seal member as the boundary. This paper proposes a bearing device for a hydraulic cylinder.
以下図面に示した実施例について説明する。 The embodiment shown in the drawings will be described below.
［実施例］
第１図は本考案による軸受を装備したシリンダ
ヘツドの一部切欠側面図で、１は外側方の軸受、
２は内側方の軸受、１ａ及び２ｂは軸受１，２の
装着溝、３はシリンダヘツド、４はピストンロツ
ド、ｄ１，ｄ２，ｄ３は軸受１，２に隣接する軸
受ハウジング部の内径、ｄ４，ｄ５は軸受１，２
を嵌装する装着溝１ａ，２ｂの内径で、従来品と
異なる点は、軸受１，２に隣接する軸受ハウジン
グ部の内径をd1＞d2＞d3と段階的に変化せしめ
る点にある。[Example] Fig. 1 is a partially cutaway side view of a cylinder head equipped with a bearing according to the present invention, where 1 indicates the outer bearing;
2 is the inner bearing, 1a and 2b are mounting grooves for the bearings 1 and 2, 3 is the cylinder head, 4 is the piston rod, d1, d2, d3 are the inner diameters of the bearing housing portions adjacent to the bearings 1, 2, d4, d5 are bearings 1 and 2
The difference from conventional products in terms of the inner diameter of the mounting grooves 1a and 2b into which the bearings are fitted is that the inner diameter of the bearing housing portion adjacent to the bearings 1 and 2 is changed stepwise as d1>d2>d3.
次に第２図は、ピストン側の軸受部をも含めて
示す本考案の他の実施例を示すもので、シリンダ
ヘツド３側における軸受１，２は第１図示の場合
と同様であるが、シリンダ７に収容されたピスト
ン９の軸受５，６及び５′，６′はシール部材８を
境として左右に一組ずつ並列嵌装してあり、これ
ら軸受５，６および軸受５′，６′に隣接するピス
トン９の外径はd8＞d9＞d10、d8′＞d9′＞d10′と
ピストン軸方向中心から外方に向つて順次、段階
的に変化している。 Next, FIG. 2 shows another embodiment of the present invention including the bearing part on the piston side, and the bearings 1 and 2 on the cylinder head 3 side are the same as those shown in the first diagram. The bearings 5, 6 and 5', 6' of the piston 9 housed in the cylinder 7 are fitted in parallel in pairs on the left and right sides with the seal member 8 as a boundary. The outer diameter of the piston 9 adjacent to the piston 9 gradually changes from the center in the axial direction of the piston to the outside as d8>d9>d10 and d8'>d9'>d10'.
［作用］
以上の構成からなる本考案装置においては、油
圧シリンダに対する横荷重作用時のロツド４の撓
みや、シリンダヘツド３側軸受１，２とロツド４
との嵌合隙間およびピストン９側軸受５，６，
５′，６′とロツド４との嵌合隙間によつて生ずる
ロツド４、ピストン９の傾きに際して、ロツド側
軸受部では軸受１，２に隣接するシリンダヘツド
３のハウジング部の内面を外方に向つて順次段階
的に大径にする一方、ピストン９側軸受部では、
ピストンの軸方向中心から外方に向つて軸受５，
６，５′，６′に隣接するピストン９の外径を順次
段階的に小径にしたため、ロツド４とシリンダヘ
ツド３側ハウジング部の接触やピストン９とシリ
ンダチユーブ７との接触を防止することができ
る。[Function] In the device of the present invention having the above configuration, the bending of the rod 4 when a lateral load is applied to the hydraulic cylinder, and the bending of the rod 4 between the bearings 1 and 2 on the cylinder head 3 side and the rod 4 are prevented.
and the fitting clearance between the piston 9 side bearings 5, 6,
When the rod 4 and piston 9 are tilted due to the fitting gap between the rods 5' and 6' and the rod 4, the inner surface of the housing part of the cylinder head 3 adjacent to the bearings 1 and 2 is turned outward in the rod side bearing part. While gradually increasing the diameter towards the piston 9 side,
Bearings 5 outward from the axial center of the piston;
Since the outer diameter of the piston 9 adjacent to the pistons 6, 5', and 6' is gradually reduced in diameter, it is possible to prevent contact between the rod 4 and the housing part on the cylinder head 3 side and between the piston 9 and the cylinder tube 7. can.
［考案の効果］
本考案は上述のように、ロツド側軸受部ではロ
ツドの傾き角に対応して軸受に隣接する軸受ハウ
ジングの内面を外方に向つて順次、大径にし、ピ
ストン側軸受部ではピストンの傾き角に対応して
軸受に隣接するピストン外径をピストン軸方向中
心より外方に向つてその外径を順次小径に設定し
たことにより、経年使用による軸受部材の摩耗が
あつてもロツドの撓みやロツド及びピストンの傾
きによつて、ロツドとシリンダヘツドのハウジン
グ部およびピストンとシリンダチユーブが接触
し、ロツド表面やシリンダチユーブ内面を損傷
し、油漏れを招くことを防止できる等、その利と
する処、すこぶる大なるものである。[Effects of the invention] As described above, the present invention has the inner diameter of the bearing housing adjacent to the bearing gradually increasing outward in accordance with the inclination angle of the rod in the rod side bearing part, and In this case, the outer diameter of the piston adjacent to the bearing is gradually decreased from the axial center of the piston toward the outside in accordance with the inclination angle of the piston. This prevents the rod from coming into contact with the housing part of the cylinder head and the piston and the cylinder tube due to bending of the rod or the inclination of the rod and piston, which could damage the rod surface and inner surface of the cylinder tube and cause oil leakage. The benefits are enormous.
第１図は本考案装置を施した油圧シリンダの一
実施例を示すシリンダヘツド部分の一部切欠側面
図、第２図は同装置を施した他の実施例を示すピ
ストン部分を含む油圧シリンダの一部切欠側面
図、第４図は従来の装置を有する油圧シリンダの
一例を示す一部切欠側面図、第３図は第４図の状
態における油圧シリンダのシリンダヘツド部分の
一部切欠拡大側面図、第５図は２個の軸受を一定
以上に遠隔配置した場合の油圧シリンダを示す一
部切欠側面図である。
１，２……軸受（シリンダヘツド）、３……シ
リンダヘツド、４……ピストンロツド、５，６，
５′，６′……軸受（ピストン）、５ａ，５′ａ，６
ｂ，６′ｂ……装着溝。
Fig. 1 is a partially cutaway side view of a cylinder head portion showing one embodiment of a hydraulic cylinder equipped with the device of the present invention, and Fig. 2 is a side view of a hydraulic cylinder including a piston portion showing another embodiment equipped with the same device. 4 is a partially cutaway side view showing an example of a hydraulic cylinder having a conventional device; FIG. 3 is an enlarged partially cutaway side view of the cylinder head portion of the hydraulic cylinder in the state shown in FIG. 4. , FIG. 5 is a partially cutaway side view showing a hydraulic cylinder in which two bearings are disposed at a distance greater than a certain distance. 1, 2... Bearing (cylinder head), 3... Cylinder head, 4... Piston rod, 5, 6,
5', 6'...Bearing (piston), 5a, 5'a, 6
b, 6'b... mounting groove.
Claims (1)
複数の軸受部材に隣接する軸受ハウジングの内面
を外方に向かつて段階的に大径にし、ピストン軸
受部ではシール部材を境にピストンの傾きに対応
して複数の軸受部材に隣接するピストン外径をピ
ストン軸方向中心より外方に向かつて、その外径
を段階的小径に設定したことを特徴とする油圧シ
リンダの軸受装置。 In the rod side bearing part, the inner surface of the bearing housing adjacent to the plurality of bearing members is gradually enlarged outward in accordance with the inclination angle of the rod, and in the piston bearing part, the diameter is increased in stages according to the inclination angle of the piston, with the seal member as the boundary. A bearing device for a hydraulic cylinder, characterized in that the outer diameter of a piston adjacent to a plurality of bearing members is set to a stepwise smaller diameter by moving outward from the axial center of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136508U JPH0535215Y2 (en) | 1988-10-19 | 1988-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136508U JPH0535215Y2 (en) | 1988-10-19 | 1988-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0165421U JPH0165421U (en) | 1989-04-26 |
| JPH0535215Y2 true JPH0535215Y2 (en) | 1993-09-07 |
Family
ID=31397087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988136508U Expired - Lifetime JPH0535215Y2 (en) | 1988-10-19 | 1988-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0535215Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107161A (en) * | 1979-02-05 | 1980-08-16 | Mitsubishi Heavy Ind Ltd | Rod bush setting method |
| JPS5715364U (en) * | 1980-07-01 | 1982-01-26 | ||
| JPS5824559B2 (en) * | 1972-09-15 | 1983-05-21 | インプル−ブド マシ−ナリ− インコ−ポレ−テツド | Lattice structure and its corrugated strips |
| JPS6158706B2 (en) * | 1984-06-08 | 1986-12-12 | Nippon Boorubarubu Kk |
-
1988
- 1988-10-19 JP JP1988136508U patent/JPH0535215Y2/ja not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824559B2 (en) * | 1972-09-15 | 1983-05-21 | インプル−ブド マシ−ナリ− インコ−ポレ−テツド | Lattice structure and its corrugated strips |
| JPS55107161A (en) * | 1979-02-05 | 1980-08-16 | Mitsubishi Heavy Ind Ltd | Rod bush setting method |
| JPS5715364U (en) * | 1980-07-01 | 1982-01-26 | ||
| JPS6158706B2 (en) * | 1984-06-08 | 1986-12-12 | Nippon Boorubarubu Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0165421U (en) | 1989-04-26 |
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