JPH03209032A - Oil-hydraulic damper device - Google Patents
Oil-hydraulic damper deviceInfo
- Publication number
- JPH03209032A JPH03209032A JP199390A JP199390A JPH03209032A JP H03209032 A JPH03209032 A JP H03209032A JP 199390 A JP199390 A JP 199390A JP 199390 A JP199390 A JP 199390A JP H03209032 A JPH03209032 A JP H03209032A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- communication hole
- orifice
- oil
- wire
- 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
- 238000004891 communication Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 4
- 239000006096 absorbing agent Substances 0.000 description 7
- 230000035939 shock Effects 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、シリンダケース内において、ピストンロッド
の押引きによって移動するピストンの両側に作動油を充
填した一対の油室を形成す３
るとともに、前記ピストンに前記各油室を連通ずるオリ
フィスを形成してある油圧式緩衝装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention forms a pair of oil chambers filled with hydraulic oil in a cylinder case on both sides of a piston that moves by pushing and pulling a piston rod. The present invention relates to a hydraulic shock absorber in which the piston has an orifice that communicates with each of the oil chambers.
上記油圧式緩衝装置において、従来では、前記オリフィ
スは機械加工によってピストンに貫通孔を穿設すること
で形成されるのが一般的であった。Conventionally, in the above-mentioned hydraulic shock absorber, the orifice was generally formed by drilling a through hole in the piston by machining.
ところが、上記従来構造において、機械加工によるオリ
フィス孔の最小径は一定の限界があり、所望の油圧緩衝
特性を得るためにはシリンダケースの径を大きなものに
する必要がある場合があって、外形が大型化するという
弊害があった。又、上記したように固定径のオリフィス
であるため、油圧緩衝特性を変更調節することができな
いといった欠点もあった。However, in the above conventional structure, there is a certain limit to the minimum diameter of the orifice hole that can be machined, and in order to obtain the desired hydraulic damping characteristics, it may be necessary to increase the diameter of the cylinder case. This had the disadvantage of becoming larger. Further, as described above, since the orifice has a fixed diameter, there is a drawback that the hydraulic damping characteristics cannot be changed or adjusted.
本発明は、簡単な構造改良により、上記不具合点を解消
することを目的としている。The present invention aims to solve the above-mentioned problems through simple structural improvements.
本発明の特徴構成は、冒頭に記載した油圧式緩衝装置に
おいて、前記ピストンに前記各油室を連通する連通孔を
形成するとともに、この連通孔内に前記連通孔より小径
の線材を挿通状態で配設して前記オリフィスを構成して
ある点にある。A characteristic configuration of the present invention is that in the hydraulic shock absorber described at the beginning, a communication hole is formed in the piston to communicate the oil chambers, and a wire rod having a diameter smaller than that of the communication hole is inserted into the communication hole. The orifice is formed by disposing the orifice.
前記ピストンに機械加工によって連通孔を穿設するとと
もに、この連通孔に小径線材を挿通配備することで、オ
リフィスとしての実効断面積は、前記連通孔の断面積と
線材の断面積との差であるから、連通孔の内径と線材の
外径との寸法管理によりオリフィスを所望の微少面積に
設定することができる。By drilling a communication hole in the piston by machining and inserting a small diameter wire into this communication hole, the effective cross-sectional area as an orifice is the difference between the cross-sectional area of the communication hole and the cross-sectional area of the wire. Therefore, the orifice can be set to a desired minute area by controlling the dimensions of the inner diameter of the communicating hole and the outer diameter of the wire.
その結果、シリンダの径、即ち外形を大型化させること
なく、小面積オリフィスによる所望の油圧緩衝特性を有
するものを、従来と同様な寸法精度の機械加工により得
られることとなった。As a result, a cylinder having the desired hydraulic damping characteristics due to a small area orifice can be obtained by machining with the same dimensional accuracy as in the past, without increasing the diameter of the cylinder, that is, the outer diameter.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第５図に本発明に係る油圧式緩衝装置（１）を備えた乗
用型田植機を示している。この田植機は、乗用型走行機
体の後部に、油圧シリンダ（２）の駆動により昇降揺動
自在なリンク機構（３）を介して苗植付装置（４）を昇
降駆動自在並びに前後軸芯（Ｙ）周りでローリング自在
に連結して構成してある。前記苗植付装置（４）は、後
下り傾斜姿勢の苗載せ台（５）、苗載せ台（５）の下端
から苗を一株づつ切り出して植付ける複数の植付機構（
６）及び接地フロート（７）等から成り、前記苗載せ台
（５）の上方には予備苗収容装置（８）を配設してある
。FIG. 5 shows a riding rice transplanter equipped with a hydraulic shock absorber (1) according to the present invention. This rice transplanter has a seedling planting device (4) attached to the rear of the riding-type traveling body, which can be driven up and down through a link mechanism (3) that can be moved up and down by the drive of a hydraulic cylinder (2), and can be driven up and down through a link mechanism (3) driven by a hydraulic cylinder (2). Y) It is constructed by being connected so that it can roll freely around the circumference. The seedling planting device (4) includes a seedling platform (5) tilted backward and a plurality of planting mechanisms (5) for cutting and planting seedlings one by one from the lower end of the seedling platform (5).
6), a grounding float (7), etc., and a preliminary seedling storage device (8) is provided above the seedling platform (5).
前記予備苗収容装置（８）は苗載せ台（５）と略平行な
姿勢で予備苗を載置保持する苗載置位置と下端側が苗載
せ台（５）上に下方揺動して、予備苗を苗載せ台（５）
上に滑動供給する苗供給位置とに亘り横軸芯周りで揺動
自在に取付けてある。上記苗載置位置から苗供給位置へ
の切換えは苗残量の検出に基づく電磁ソレノイド（図示
せず）の駆動により自動で行うよう構成し、長時間作業
が可能となるようにしてある。The preliminary seedling accommodating device (8) has a seedling loading position where the preliminary seedlings are placed and held in an attitude substantially parallel to the seedling loading platform (5), and a lower end thereof swings downward onto the seedling loading platform (5) to store the preliminary seedlings. Seedling table (5)
It is mounted so as to be able to swing freely around the horizontal axis between the top and the seedling feeding position where the seedlings are fed by sliding. The switching from the seedling placement position to the seedling supply position is automatically performed by driving an electromagnetic solenoid (not shown) based on the detection of the remaining amount of seedlings, thereby enabling long-time work.
左右の接地フロート（７）， （７）により苗植付装置
（４）の対泥面左右傾斜を検知するようにして、その検
知作動に基づいてローリングシリンダ（１０）により苗
植付装置（４）を前記軸芯（Ｙ）周りで回動駆動させて
苗植付装置（４〉を対泥面水平姿勢に維持すべく図示し
ない制御装置で制御するよう構威してある。前記ローリ
ングシリンダ（１０）は、第４図に示すように、前記リ
ンク機構（３）における後部側リンク（３ａ）の上部に
、そのシリンダケース（１０ａ）を固定する状態で配備
され、複動型に構成してある。そして、ピストンロッド
（１０ｂ）の両端を夫々緩衝用コイルスプリング（１１
）， （１１）を介して苗載せ台（５）の前面側左右両
側部に連結して、左右各油室のいずれかに圧油を供給す
ることで苗植付装置（４）を軸芯（Ｙ）周りでローリン
グ駆動するよう構成してある。The left and right ground floats (7), (7) detect the left and right inclination of the soil surface of the seedling planting device (4), and based on the detection operation, the rolling cylinder (10) lowers the seedling planting device (4). ) is controlled by a control device (not shown) to rotate the seedling planting device (4) around the axis (Y) and maintain the seedling planting device (4) in a horizontal position relative to the mud surface. 10) is arranged in a state where its cylinder case (10a) is fixed to the upper part of the rear link (3a) of the link mechanism (3), and is configured as a double-acting type, as shown in FIG. Both ends of the piston rod (10b) are connected to buffer coil springs (11), respectively.
), (11) are connected to the left and right sides of the front side of the seedling platform (5), and by supplying pressure oil to either of the left or right oil chambers, the seedling planting device (4) is centered. (Y) It is configured to be driven in a rolling manner around it.
そして、前記後部側リンク（３ａ）と苗載せ台（５）の
上部側摺動レール（１２冫支持フレーム（１３）との間
に、ローリング作動において予備苗を載置した大重量の
苗載せ台（５）の慣性によるオーバーローリングを規制
するための油圧式緩衝装置（１）を枢支連結してある。Then, between the rear link (3a) and the upper sliding rail (12) of the seedling platform (5), there is a heavy seedling platform on which spare seedlings are placed in rolling operation. (5) A hydraulic shock absorber (1) for regulating overrolling due to inertia is pivotally connected.
次に、前記緩衝装置（１）について説明する。Next, the buffer device (1) will be explained.
前記緩衝装置（１）は、第１図に示すように、シリンダ
ケース（１４）内において、ピストンロッド（１５）の
押引きによって移動するピストン（１６）の両側に作動
油を充填した一対の油室（Ｒ＋），（Ｒｔ）を形或する
とともに、前記ピストン（１６）に前記各油室（Ｒ１）
、（Ｒ２）を連通ずるオリフィス（１７）を形成してあ
る。前記ピストンロッド（１５）はシリンダケース（１
４）内を貫通してその軸芯方向に相対移動できるよう構
成し、ピストンロッド（１５）の一端部を後部側リンク
（３ａ）に前後軸芯周りで相対揺動自在に枢支連結して
ある。そして、ピストン（１６）の両側で各油室（Ｒ１
）、（Ｒ２）を形成するためのスペーサ部材（２０ａ）
， （２０ｂ）は、夫々、その内周部にダストシール（
２ｌ）及びオイルシール（２２）を予め装着した状態で
シリンダケース（１４）の内方側に挿入し、かつ、位置
固定して取付けるよう構成してある。つまり、前記後部
リンク（３ａ）側のスベーサ部材（２０ａ）はシリンダ
ケース（１４）の一端にシール部材（２３）を介して螺
合装着し、他方のスペーサ部材（２０ｂ）はシリンダケ
ース（１４）に内嵌させてストツパ（２４）で位置決め
してある。As shown in FIG. 1, the shock absorber (1) includes a pair of hydraulic oil filled on both sides of a piston (16) that moves by pushing and pulling a piston rod (15) in a cylinder case (14). The oil chambers (R+) and (Rt) are formed in the piston (16).
, (R2) are formed. The piston rod (15) is connected to the cylinder case (1
4) The piston rod (15) is configured to be able to penetrate through the inside and move relatively in the axial direction, and one end of the piston rod (15) is pivotally connected to the rear link (3a) so as to be relatively swingable around the longitudinal axis. be. Then, each oil chamber (R1
), a spacer member (20a) for forming (R2)
, (20b) each have a dust seal (
2l) and an oil seal (22) are inserted in advance into the cylinder case (14) and fixed in position. That is, the spacer member (20a) on the rear link (3a) side is screwed onto one end of the cylinder case (14) via the seal member (23), and the other spacer member (20b) is attached to the cylinder case (14). It is fitted inside and positioned with a stopper (24).
前記シリンダケース（１４）の他端側は前記支持フレー
ム（１３）に固定した支持部材（２５）に一対のピン（
２６）， （２６）により機体前後軸芯周りで相対回動
自在に枢支してある。前記支持部材（２５）は第３図に
示すように楕円形のパイプ形状に形成してあり、小径部
分がシリンダケース（１４）の外径と略同一となるよう
構成し、ガタツキなく枢支できるようにしてある。The other end of the cylinder case (14) is connected to a support member (25) fixed to the support frame (13) with a pair of pins (
26) and (26) are pivotally supported for relative rotation around the longitudinal axis of the fuselage. The support member (25) is formed into an oval pipe shape as shown in FIG. 3, and the small diameter portion is configured to be approximately the same as the outer diameter of the cylinder case (14), so that it can be pivoted without wobbling. It's like this.
そして、前記ピストン（１６）に前記各油室（Ｒ．），
（Ｒ２）を連通ずる連通孔（１８）を形成するとともに
、４
この連通孔（１８〉内に前記連通孔（１８）より小径の
線材（ｌ９）を挿通状態で配設して前記オリフィス（１
７）を構成してある。前記線材（ｌ９）は例えば鋼材線
等の硬質で寸法精度の高い材質で構成してある。このよ
うに構成すると、第２図に示すように、オリフィス（１
７）としての有径面積は連通孔（１８）の断面積と線材
（１９）の断面積の差により決定され、微小面積であっ
ても高精度で所望の緩衝特性を得られることになる。Each oil chamber (R.) is provided in the piston (16).
(R2) is formed, and a wire rod (19) having a diameter smaller than that of the communicating hole (18) is inserted into the communicating hole (18), and the orifice (1) is inserted into the communicating hole (18).
7) is configured. The wire rod (19) is made of a hard material with high dimensional accuracy, such as a steel wire. With this configuration, the orifice (1
The radial area as 7) is determined by the difference between the cross-sectional area of the communicating hole (18) and the cross-sectional area of the wire (19), and even if the area is minute, desired buffering characteristics can be obtained with high precision.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る油圧式緩衝装置の実施例を示し、第
１図は縦断平面図、第２図は縦断側面図、第３図は枢支
連結部の縦断側面図、第４図は苗植付装置の正面図、第
５図は田植機の全体側面図である。
（１４）・・・・・・シリンダケース、（１５）・・・
・・・ピストンロッド、（１６）・・・・・・ピストン
、（１７）・・・・・・オリフィス、
（１８）・・・・・・連通孔、
（１９）・・・・・・線材、
（Ｒ１）、（Ｒ２）・・・・・・油室。The drawings show an embodiment of the hydraulic shock absorber according to the present invention, in which Fig. 1 is a longitudinal plan view, Fig. 2 is a longitudinal side view, Fig. 3 is a longitudinal side view of the pivot joint, and Fig. 4 is a view of a seedling. A front view of the planting device, and FIG. 5 is an overall side view of the rice transplanter. (14)...Cylinder case, (15)...
... Piston rod, (16) ... Piston, (17) ... Orifice, (18) ... Communication hole, (19) ... Wire rod , (R1), (R2)...Oil chamber.
Claims (1)
１５）の押引きによって移動するピストン（１６）の両
側に作動油を充填した一対の油室（Ｒ＿１）、（Ｒ＿２
）を形成するとともに、前記ピストン（１６）に前記各
油室（Ｒ＿１）、（Ｒ＿２）を連通するオリフィス（１
７）を形成してある油圧式緩衝装置であって、前記ピス
トン（１６）に前記各油室（Ｒ＿１）、（Ｒ＿２）を連
通する連通孔（１８）を形成するとともに、この連通孔
（１８）内に前記連通孔（１８）より小径の線材（１９
）を挿通状態で配設して前記オリフィス（１７）を構成
してある油圧式緩衝装置。Inside the cylinder case (14), the piston rod (
A pair of oil chambers (R_1) and (R_2) filled with hydraulic oil are placed on both sides of the piston (16) that moves by pushing and pulling the piston (15).
), and an orifice (1) that communicates the oil chambers (R_1) and (R_2) with the piston (16).
7), the piston (16) is formed with a communication hole (18) that communicates the oil chambers (R_1) and (R_2), and the communication hole (18) is formed in the piston (16). ) has a wire rod (19) smaller in diameter than the communication hole (18).
) is arranged in an inserted state to constitute the orifice (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP199390A JPH0726660B2 (en) | 1990-01-08 | 1990-01-08 | Hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP199390A JPH0726660B2 (en) | 1990-01-08 | 1990-01-08 | Hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03209032A true JPH03209032A (en) | 1991-09-12 |
| JPH0726660B2 JPH0726660B2 (en) | 1995-03-29 |
Family
ID=11516989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP199390A Expired - Lifetime JPH0726660B2 (en) | 1990-01-08 | 1990-01-08 | Hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726660B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662046A (en) * | 1993-12-14 | 1997-09-02 | Hansen Inc. | Method and apparatus for controlling railway truck hunting and a railway car body supported thereby |
| US7980439B2 (en) | 2007-05-11 | 2011-07-19 | Hitachi Koki Co., Ltd. | Nailing machine |
-
1990
- 1990-01-08 JP JP199390A patent/JPH0726660B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662046A (en) * | 1993-12-14 | 1997-09-02 | Hansen Inc. | Method and apparatus for controlling railway truck hunting and a railway car body supported thereby |
| US7980439B2 (en) | 2007-05-11 | 2011-07-19 | Hitachi Koki Co., Ltd. | Nailing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726660B2 (en) | 1995-03-29 |
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