JPH0351407Y2 - - Google Patents
Info
- Publication number
- JPH0351407Y2 JPH0351407Y2 JP1985001594U JP159485U JPH0351407Y2 JP H0351407 Y2 JPH0351407 Y2 JP H0351407Y2 JP 1985001594 U JP1985001594 U JP 1985001594U JP 159485 U JP159485 U JP 159485U JP H0351407 Y2 JPH0351407 Y2 JP H0351407Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- lift arm
- shaft
- operating
- cylinder
- 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
Links
- 230000000694 effects Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Shovels (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、農用ローダにおいて、そのリフト
アームを回動させるリフトシリンダ、および該リ
フトアームの先端作業器を回動させるダンプシリ
ンダの操作バルブの取付装置に係るものである。[Detailed description of the invention] (Industrial application field) This invention is an agricultural loader that uses a lift cylinder that rotates its lift arm and a control valve of a dump cylinder that rotates the end working device of the lift arm. This relates to a mounting device.
（従来の技術）
従来のこの種の農用ローダにおける操作バルブ
取付装置は、第６図に示すように手動式の操作バ
ルブで、リフトアーム１のリフトシリンダおよび
そのリフトアーム１の先端作業器のダンプシリン
ダの操作バルブイを、トラクタの車体上のローダ
取付フレーム２に固着した後方のバルブブラケツ
トロ、あるいはその取付フレーム２の近傍におい
てトラクタの車体やローダの適当個所に固定して
設置し、その操作バルブイには操作レバーハを設
けて操作バルブイをトラクタの圧油発生器に連結
している。(Prior Art) The conventional operation valve mounting device for this type of agricultural loader is a manual operation valve as shown in FIG. The cylinder operating valve is installed on the rear valve bracket fixed to the loader mounting frame 2 on the tractor body, or fixed to an appropriate location on the tractor body or loader near the mounting frame 2. An operating lever is provided to connect the operating valve to the tractor's pressure oil generator.
従つて、上記の操作バルブイよりリフトシリン
ダおよびダンプシリンダへのホース配管は、リフ
トアーム１の基端を取付フレーム２に枢着する軸
杆３の附近を通すことによつて最短のものとする
のが常である。 Therefore, the hose piping from the above-mentioned operating valve I to the lift cylinder and dump cylinder can be made as short as possible by passing the base end of the lift arm 1 through the vicinity of the shaft rod 3 which is pivotally connected to the mounting frame 2. is always the case.
一方、上記以外のホース配管のものは、リフト
アーム１が回動してもホースに無理な曲げやねじ
れが生じないようにホースを著しく長くしてい
る。 On the other hand, hose piping other than those mentioned above is made extremely long so that the hose does not become unreasonably bent or twisted even when the lift arm 1 rotates.
（考案が解決しようとする問題点）
上記従来の農用ローダにおける操作バルブ取付
装置においては、
(1) 手動式の操作バルブであるため、操作バルブ
イの設置位置が限定される。(Problems to be Solved by the Invention) In the above-mentioned conventional operation valve mounting device for an agricultural loader, (1) Since the operation valve is a manual operation valve, the installation position of the operation valve is limited.
(2) 操作レバーハの位置が決められているため、
操作バルブイを自由に動かせることができな
い。(2) Since the position of the operating lever is determined,
The control valve cannot be moved freely.
(3) 操作レバーハがあるため、キヤビン付きトラ
クタではキヤビンに操作レバーハを通す窓をあ
ける必要がある。(3) Because there is a control lever, for tractors with a cabin, it is necessary to open a window in the cabin for the control lever to pass through.
(4) 操作バルブイが固定されているために、リフ
トアーム１が回動して上昇したり下降するたび
にホースが圧縮されて彎曲したり直線になつた
りする。従つて、操作バルブイとリフトシリン
ダおよびダンプシリンダ間のホースの長さや、
該ホースを通過させる位置等を決定するのが困
難である上に、そのホースの長さには余裕を見
積るため、ホースを長くする必要がある。(4) Since the operating valve 1 is fixed, each time the lift arm 1 rotates and moves up or down, the hose is compressed and becomes curved or straight. Therefore, the length of the hose between the operating valve and the lift cylinder and dump cylinder,
Not only is it difficult to determine the position through which the hose should pass, but it is also necessary to make the hose long in order to provide a margin for the length of the hose.
等の点に問題がある。There are problems with these points.
（問題点を解決するための手段）
この考案は、上記の問題点を解決するために、
リフトアーム１を回動させるリフトシリンダ４、
およびそのリフトアーム１の先端作業器５を回動
させるダンプシリンダ６の操作バルブ７を取付け
たバルブブラケツト８を、リフトアーム１の基端
の取付軸杆３の近傍においてリフトアーム１の回
動方向と同方向に回動するように軸支し、その操
作バルブ７の操作部を操作バルブ７と連繋させ分
離してトラクタの運転席の手元個所に設置した。(Means for solving the problems) In order to solve the above problems, this invention
a lift cylinder 4 for rotating the lift arm 1;
The valve bracket 8 to which the operation valve 7 of the dump cylinder 6 that rotates the tip working device 5 of the lift arm 1 is attached is placed near the mounting shaft 3 at the base end of the lift arm 1 in the direction of rotation of the lift arm 1. The operating valve 7 is pivotally supported so as to rotate in the same direction as the operating valve 7, and the operating part of the operating valve 7 is connected to and separated from the operating valve 7 and installed at a location close to the driver's seat of the tractor.
（作用）
バルブ７を操作してリフトシリンダ４を伸長さ
せれば、リフトアーム１が第１図に示す状態から
軸杆３を支点とし時計方向へ回動して上昇すると
共に、その回動に伴い、バルブ７とリフトシリン
ダ４およびリフトアーム１の先端部上のダンプシ
リンダ６を連結するホースを介しバルブ７付きバ
ルブブラケツト８が自動的に軸杆３を支点として
第１図および第３図の時計方向へ回動する。(Operation) When the lift cylinder 4 is extended by operating the valve 7, the lift arm 1 rotates clockwise around the shaft 3 as a fulcrum from the state shown in Fig. 1 and rises. Accordingly, the valve bracket 8 with the valve 7 automatically moves around the shaft 3 as a fulcrum as shown in FIGS. Rotate clockwise.
一方、バルブ７を上記と反対に操作してリフト
シリンダ４を短縮させると、軸杆３を支点として
上記と反対に作動し、リフトアーム１が回動して
下降すると共に、バルブ７付きバルブブラケツト
８も自動的に回動する。 On the other hand, when the lift cylinder 4 is shortened by operating the valve 7 in the opposite direction to that described above, it operates in the opposite direction using the shaft 3 as a fulcrum, and as the lift arm 1 rotates and descends, the valve bracket with the valve 7 8 also rotates automatically.
（実施例）
第１図乃至第３図はこの考案の一実施例を示
し、Ａはトラクタを示し、９はその車体、１０は
運転席である。(Embodiment) FIGS. 1 to 3 show an embodiment of this invention, in which A represents a tractor, 9 represents its body, and 10 represents a driver's seat.
ＢはトラクタＡの前方に取付けるフロントロー
ダを示し、１１，１２はリフトアーム１の中間部
の上下に固設した受金で、取付フレーム２の下部
と受金１２にリフトシリンダ４の両端を軸杆１
３，１４により枢着する。１５はリフトアーム１
の先端部上に固設した受金で、これにダンプリン
ク１６の下端を軸杆１７により枢着して受金１１
とダンプリンク１６の中間部にダンプシリンダ６
の両端を軸杆１８，１９により枢着する。２０は
リフトアーム１の先端に下端を軸杆２１により枢
着したヒツチで、該ヒツチ２０の上端とダンプリ
ンク１６の上端をロツド２２により連結してヒツ
チ２０にバケツトの先端作業器５を着脱可能に取
付ける。而して、操作バルブ７とリフトシリンダ
４の前端部、ダンプシリンダ６の前端部およびト
ラクタＡの圧油発生器をホース２３，２４，２５
によりそれぞれ連結する。 B indicates a front loader to be attached to the front of the tractor A, 11 and 12 are holders fixed above and below the middle part of the lift arm 1, and both ends of the lift cylinder 4 are attached to the lower part of the mounting frame 2 and the holder 12. Rod 1
Pivotally connected by 3 and 14. 15 is lift arm 1
The lower end of the dump link 16 is pivotally attached to this by a shaft 17, and the receiver 11 is fixed on the tip of the receiver.
and the dump cylinder 6 in the middle part of the dump link 16.
Both ends are pivotally connected by shaft rods 18 and 19. Reference numeral 20 denotes a hitch whose lower end is pivotally connected to the tip of the lift arm 1 by a shaft rod 21, and the upper end of the hitch 20 and the upper end of the dump link 16 are connected by a rod 22, so that a bucket tip working device 5 can be attached to and detached from the hitch 20. Attach to. The operating valve 7, the front end of the lift cylinder 4, the front end of the dump cylinder 6, and the pressure oil generator of the tractor A are connected to the hoses 23, 24, 25.
They are connected by .
また、操作バルブ７には電磁バルブを用い、図
示してないがその操作バルブ７の操作レバー付き
スイツチ機構を設けた操作部は、操作バルブ７と
分離してトラクタＡの運転席の手元個所に設置
し、それらの操作バルブ７、操作部およびトラク
タＡのバツテリの間に適宜の電気回路を構成す
る。 In addition, an electromagnetic valve is used as the operating valve 7, and although not shown, the operating part of the operating valve 7 equipped with a switch mechanism with an operating lever is separated from the operating valve 7 and placed near the driver's seat of the tractor A. A suitable electrical circuit is constructed between the operating valve 7, the operating section, and the battery of the tractor A.
次にその作用を説明する。運転席の手元の操作
レバーによつてリフトシリンダ４を伸長または短
縮させれば、それに伴い、リフトアーム１が軸杆
３を、リフトシリンダ４が軸杆１３をそれぞれ支
点として上方または下方へ回動すると共に、ホー
ス２３，２４，２５を介して操作バルブ７付きバ
ルブブラケツト８も自動的に軸杆３を支点として
回動する。 Next, its effect will be explained. When the lift cylinder 4 is extended or shortened using the operating lever at hand in the driver's seat, the lift arm 1 and the lift cylinder 4 rotate upward or downward using the shaft rod 3 and the shaft rod 13 as fulcrums, respectively. At the same time, the valve bracket 8 with the operating valve 7 is also automatically rotated about the shaft 3 as a fulcrum via the hoses 23, 24, 25.
一方、ダンプシリンダ６を伸長または短縮させ
ると、それに伴いダンプリンク１６が軸杆１７
を、該ダンプリンク１６にロツド２２で連結した
ヒツチ２０が軸杆２１をそれぞれ支点とし前方ま
たは後方へ回動してそのヒツチ２０に取付けた先
端作業器５は倒伏または起立する。 On the other hand, when the dump cylinder 6 is extended or shortened, the dump link 16 is moved to the shaft rod 17.
A hitch 20 connected to the dump link 16 by a rod 22 rotates forward or backward using the shaft 21 as a fulcrum, and the tip working device 5 attached to the hitch 20 falls down or stands up.
なお、操作バルブ７に、上記電磁バルブに代え
て機械的に作動するバルブを用い、これとトラク
タＡの運転席１０の手元個所に設けた操作レバー
を適宜にプツシユケーブルによつて連結しても上
記と同様に作用する。 In addition, a mechanically actuated valve is used instead of the above-mentioned electromagnetic valve as the operation valve 7, and this is connected to an operation lever provided at the hand of the driver's seat 10 of the tractor A by an appropriate push cable. also works in the same way as above.
第４図および第５図に示すこの考案の他の実施
例は、バルブブラケツトの取付軸杆を軸杆３と別
個にしたもので、その構造を図面について説明す
れば、８1は四角板状のバルブブラケツトで、軸
杆３の下方に接近させて配置し、そのバルブブラ
ケツト８1の中央部を軸杆２６により取付フレー
ム２に回動自在に支持して該バルブブラケツト８
１に操作バルブ７を取付ける。 Another embodiment of this invention shown in FIGS. 4 and 5 is one in which the mounting shaft of the valve bracket is separate from the shaft rod 3, and its structure is explained with reference to the drawings. The valve bracket 81 is arranged close to the bottom of the shaft 3, and the central part of the valve bracket 81 is rotatably supported on the mounting frame 2 by the shaft 26.
Attach the operation valve 7 to 1 .
この構造のものにおいても、リフトシリンダ４
の伸縮動作によるリフトアーム１の回動に伴い、
ホース２３，２４，２５を介し操作バルブ７付き
バルブブラケツト８1が自動的に軸杆２６を支点
とし回動して上記と同様に作用する。 Also in this structure, the lift cylinder 4
With the rotation of the lift arm 1 due to the expansion and contraction movement of
The valve bracket 81 with the operating valve 7 is automatically rotated about the shaft 26 via the hoses 23, 24, 25, and operates in the same manner as described above.
（考案の効果） この考案は、次のような顕著な効果を有する。(Effect of idea) This invention has the following remarkable effects.
(1) ローダのリフトシリンダおよびダンプシリン
ダにホースで連結する操作バルブを、リフトア
ームの回動支点であるその基端取付軸杆の近傍
に配置して該操作バルブのバルブブラケツトを
リフトアームの回動方向を同方向に回動するよ
うに軸支したから、リフトアームの回動に伴
い、ホースを介して操作バルブが自動的にほぼ
一体状態で回動する。従つて、リフトアームに
沿つているホースが従来よりも短かくてよく、
最短になして経済的である。(1) An operating valve that is connected to the loader's lift cylinder and dump cylinder with a hose is placed near its base end mounting shaft, which is the rotation fulcrum of the lift arm, and the valve bracket of the operating valve is connected to the lift arm's rotation. Since the lift arm is pivoted to rotate in the same direction, the operation valve automatically rotates almost integrally with the rotation of the lift arm via the hose. Therefore, the hose that runs along the lift arm can be shorter than before.
It is the shortest and most economical.
(2) 操作バルブが、それとリフトシリンダ、ダン
プシリンダおよびトラクタの圧油発生器を連結
するホースの弾性によりリフトアームの回動に
伴つて自動的に回動するから、ホースに無理な
曲げやねじれが生じることはなくてホースの寿
命を増大することができる。(2) Because the operation valve automatically rotates as the lift arm rotates due to the elasticity of the hose that connects it to the lift cylinder, dump cylinder, and tractor's pressure oil generator, there is no need to force the hose to bend or twist. The life of the hose can be increased since this will not occur.
(3) 操作バルブとトラクタの圧油発生器を連結す
るホースを除けば、ローダの型式にかかわらず
リフトアームに沿つているホース配管はすべて
同じサイズで共用できるから、組立上便利であ
り、その組立作業が容易となつて作業能率を向
上する。(3) Except for the hose that connects the operating valve and the tractor's pressure oil generator, all the hose piping along the lift arm is the same size and can be used regardless of the loader model, making assembly convenient and easy to use. Assembly work becomes easier and work efficiency is improved.
(4) 操作バルブの操作部を操作バルブと分離して
トラクタの運転席の手元個所に設置するから、
ローダの操作を安易適切になし得られ、長時間
作業にも疲労が少なくて作業能率を向上する。(4) The operating part of the operating valve is separated from the operating valve and installed near the driver's seat of the tractor.
The loader can be operated easily and appropriately, reducing fatigue even during long hours of work, improving work efficiency.
(5) 構造が簡単で、容易安価に製作でき、その作
動は円滑適確である。(5) The structure is simple, it can be manufactured easily and inexpensively, and its operation is smooth and accurate.
第１図はこの考案の一実施例に係る農用フロン
トローダの側面図、第２図は同上要部の後面図、
第３図はそのバルブブラケツト取付部の拡大斜面
図、第４図はこの考案の他の実施例に係る農用フ
ロントローダの操作バルブ取付部の側面図、第５
図はそのバルブブラケツト取付部の拡大斜面図、
第６図は従来の農用フロントローダにおける操作
バルブ取付部の側面図である。
Ａ……トラクタ、１……リフトアーム、２……
取付フレーム、３……軸杆、４……リフトシリン
ダ、５……先端作業器、６……ダンプシリンダ、
７……操作バルブ、８……バルブブラケツト、１
０……運転席、２３，２４，２５……ホース。
FIG. 1 is a side view of an agricultural front loader according to an embodiment of this invention, FIG. 2 is a rear view of the main parts of the same,
Fig. 3 is an enlarged perspective view of the valve bracket mounting part, Fig. 4 is a side view of the operation valve mounting part of an agricultural front loader according to another embodiment of this invention, and Fig. 5
The figure is an enlarged perspective view of the valve bracket mounting part.
FIG. 6 is a side view of the operation valve mounting portion in a conventional agricultural front loader. A...Tractor, 1...Lift arm, 2...
Mounting frame, 3... Axis rod, 4... Lift cylinder, 5... Tip working device, 6... Dump cylinder,
7... Operation valve, 8... Valve bracket, 1
0... Driver's seat, 23, 24, 25... Hose.
Claims (1)
トアームの基端を軸杆により枢着してその取付フ
レームの下部とリフトアームの中間部下方の受金
にリフトシリンダの両端を軸杆により枢着し、上
記リフトアームの先端部上の受金に下端を軸杆に
より枢着したダンプリンクの中間部とそのリフト
アームの中間部上の受金にダンプシリンダの両端
を軸杆により枢着して上記リフトアームの先端に
下端を軸杆により枢着したヒツチの上部と上記ダ
ンプリンクの上部をロツドにより連結し、操作バ
ルブを取付けたバルブブラケツトを上記取付フレ
ームの上部のリフトアーム取付軸杆の近傍に配置
しそのリフトアームの回動方向と同方向に回動す
るように軸杆により支持して上記の操作バルブと
リフトシリンダ、ダンプシリンダおよびトラクタ
の圧油発生器をそれぞれホースにより連結し、上
記操作バルブの操作部を該操作バルブと連繋させ
て分離しトラクタの運転席の手元個所に設置して
なる農用ローダにおける操作バルブ取付装置。 The base end of the lift arm is pivotally connected to the upper part of the mounting frame on the vehicle body of the tractor by a shaft rod, and both ends of the lift cylinder are pivotally connected to the lower part of the mounting frame and the receiver at the middle lower part of the lift arm by shaft rods. , the intermediate part of the dump link whose lower end is pivotally connected to the support on the tip of the lift arm by a shaft rod, and the both ends of the dump cylinder are pivotally connected to the support on the intermediate part of the lift arm by the shaft rod. Connect the upper part of the hitch, whose lower end is pivotally attached to the tip of the lift arm with a shaft rod, and the upper part of the above dump link with a rod, and place the valve bracket with the operating valve attached near the lift arm mounting shaft on the top of the above mounting frame. The above operation valve is connected to the lift cylinder, the dump cylinder and the tractor's pressure oil generator through hoses, respectively, and is supported by a shaft so as to rotate in the same direction as the rotation direction of the lift arm. An operating valve mounting device for an agricultural loader, in which an operating part of the valve is connected to and separated from the operating valve and installed at a location close to the driver's seat of a tractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985001594U JPH0351407Y2 (en) | 1985-01-10 | 1985-01-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985001594U JPH0351407Y2 (en) | 1985-01-10 | 1985-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61121262U JPS61121262U (en) | 1986-07-31 |
| JPH0351407Y2 true JPH0351407Y2 (en) | 1991-11-05 |
Family
ID=30474483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985001594U Expired JPH0351407Y2 (en) | 1985-01-10 | 1985-01-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351407Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4648918B2 (en) * | 2007-03-30 | 2011-03-09 | 株式会社クボタ | Tractor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696174U (en) * | 1979-12-25 | 1981-07-30 | ||
| JPS58120269U (en) * | 1982-02-05 | 1983-08-16 | ヤンマー農機株式会社 | Loader operation lever stand mounting structure on front loader of tractor |
-
1985
- 1985-01-10 JP JP1985001594U patent/JPH0351407Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61121262U (en) | 1986-07-31 |
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