JPH0734754Y2 - Pressure oil supply structure for agricultural tractors - Google Patents
Pressure oil supply structure for agricultural tractorsInfo
- Publication number
- JPH0734754Y2 JPH0734754Y2 JP18740887U JP18740887U JPH0734754Y2 JP H0734754 Y2 JPH0734754 Y2 JP H0734754Y2 JP 18740887 U JP18740887 U JP 18740887U JP 18740887 U JP18740887 U JP 18740887U JP H0734754 Y2 JPH0734754 Y2 JP H0734754Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure oil
- oil supply
- rotary joint
- bolt
- relay member
- 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
Landscapes
- Arrangement Of Transmissions (AREA)
- Joints Allowing Movement (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は伝動軸内に油圧機器への圧油供給経路を形成す
るとともに、前記伝動軸の外周面に開口する前記圧油供
給経路の入口ポートに外部からの圧油を供給する回転ジ
ョイントを前記伝動軸に外嵌してある農用トラクタの圧
油供給構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention forms a pressure oil supply path to hydraulic equipment in a transmission shaft, and an inlet of the pressure oil supply path that opens to an outer peripheral surface of the transmission shaft. The present invention relates to a pressure oil supply structure for an agricultural tractor, in which a rotary joint for supplying pressure oil from the outside to a port is fitted onto the transmission shaft.
この種の農用トラクタの圧油供給構造において、従来
は、ミッションケース外壁側圧油供給ポートと回転ジョ
イント側入口ポートとを給油パイプで連結してあった
（例えば実開昭62-34227号公報）。In this type of agricultural tractor pressure oil supply structure, conventionally, a transmission case outer wall side pressure oil supply port and a rotary joint side inlet port were connected by an oil supply pipe (for example, Japanese Utility Model Laid-Open No. 62-34227).
この場合にはミッションケース外壁側圧油供給ポートか
ら直接回転ジョイントに給油パイプで連結してあるの
で、回転ジョイントの入口ポート部をできるだけミッシ
ョンケース外壁側圧油供給ポートに近接させて設け、給
油パイプの張設長さを出来るだけ短くして、この給油パ
イプ自体にかかる回転ジョイント支持負担を軽減したい
設計上の要求がある（つまり、回転ジョイントは伝動軸
の回転につれて共回りしようとす際の回転力が給油パイ
プに作用するからである）。In this case, the pressure oil supply port on the outer side of the mission case is directly connected to the rotary joint by an oil supply pipe.Therefore, the inlet port of the rotary joint should be located as close as possible to the pressure oil supply port on the outer side of the mission case, and the oil supply pipe should be tight. There is a design requirement to reduce the installation length as much as possible to reduce the load of supporting the rotary joint on the oil supply pipe itself (that is, the rotary joint has a rotational force when trying to rotate together with the rotation of the transmission shaft). This is because it acts on the refueling pipe).
この為に、回転ジョイントは伝動軸に外嵌される本体部
からミッションケース外壁側圧油供給ポートに対する入
口ポート部が長く延出されているので、形状が大型化し
占有スペースの大きなものになっていた。そうすると、
伝動軸に回転ジョイントを組付けた状態でミッションケ
ース内に組込むことができない、或いは、伝動軸に回転
ジョイントを組付けてミッションケース内に組込む場合
にはミッションケースに大きな孔を形成してそこから挿
通する組付方法を余儀なくされるために、ミッションケ
ースが強度面で弱くなるといった欠点がでることを否め
なかった。For this reason, since the rotary joint has the inlet port portion for the pressure oil supply port on the outer wall side of the transmission case extended from the main body portion externally fitted to the transmission shaft, the shape becomes large and the occupied space becomes large. . Then,
It is not possible to assemble the transmission shaft with the rotary joint in the mission case, or if the transmission shaft is assembled with the rotary joint in the mission case, form a large hole in the mission case. It was unavoidable that the mission case had a drawback in that it was weak in terms of strength because the assembly method of inserting it was forced.
本考案の目的は回転ジョイントを合理的に変更して、従
来欠点を解消し乍ら、取扱いをより簡易に行えるものを
提供する点にある。An object of the present invention is to provide a product in which the rotary joint can be rationally modified to solve the conventional drawbacks and to be handled more easily.
本考案による特徴構成は、 前記回転ジョイントとこの回転ジョイントに圧油を
供給する圧油供給部を設けたミッションケース外壁との
間に圧油供給経路を設けた中継部材と介装する点と、 前記回転ジョイントにボルト螺合用ネジ孔を設ける
点と、 前記中継部材にボルト貫通用孔を設ける点と、 中継部材側供給油路出口と回転ジョイント側供給油
路入口とに亘ってパイプジョイントを圧入嵌合させた状
態で前記ボルト貫通用孔を貫通したボルトを前記ボルト
螺合用ネジ孔に締結して中継部材を回転ジョイントに固
定する点と、 前記中継部材の回転ジョイントとの接合面とは反対
側側面に開口するボルト貫通孔の開口側に前記ボルトよ
り大径のネジ孔を形成してある点と、 にあり、その作用効果は次の通りである。A characteristic configuration according to the present invention is that the rotary joint and a transmission case outer wall provided with a pressure oil supply portion for supplying pressure oil to the rotary joint are provided with a relay member provided with a pressure oil supply path, and A pipe joint is press-fitted over a point where a bolt screwing screw hole is provided in the rotary joint, a point where a bolt penetration hole is provided in the relay member, and a relay member side supply oil passage outlet and a rotary joint side supply oil passage inlet. The point of fixing the relay member to the rotary joint by fastening the bolt penetrating the bolt through hole in the fitted state to the bolt screwing screw hole is opposite to the joint surface of the relay member with the rotary joint. The point is that a screw hole having a diameter larger than that of the bolt is formed on the opening side of the bolt through hole opening on the side surface, and the action and effect thereof are as follows.
イ 特徴構成のように、回転する側の伝動軸又は固定
側の回転ジョイントに最低限必要となる環状の供給油路
等を形成する必要のある基端部（回転ジョイント）と、
この回転ジョイントへミッションケース外壁側圧油供給
部から圧油を供給するだけの単なる直線的な供給経路だ
けが必要な部分（中継部材）とを分割して、この基端部
を伝動軸に一体的に先組してミッションケースに組込む
回転ジョイントとする。A Like the characteristic configuration, a base end portion (rotary joint) that needs to form an annular supply oil passage or the like that is at least required for the rotating side transmission shaft or the stationary side rotating joint;
This rotary joint is divided into a part (relay member) that requires only a linear supply path for supplying pressure oil from the pressure oil supply part on the outer wall of the mission case, and this base end is integrated with the transmission shaft. It is a rotary joint that is assembled into the mission case first.
ロ 二つに分割された回転ジョイントと中継部材とは特
徴構成に示すようにボルトによって組付固定される
が、回転ジョイントの圧油供給経路入口ポートを中継部
材側圧油供給経路出口ポートとは圧入嵌合された金属給
油パイプで連結してあるので、この給油パイプが回転ジ
ョイントと中継部材とを強固に結合する機能を有する
が、中継部材を回転ジョイントから取外す際にこの給油
パイプの結合力が強過ぎて、単純にボルトを取外しただ
けでは取外すことができない。そこで、本考案では、前
記ボルト貫通孔の開口側にネジ孔を形成して、このネジ
孔に例えばボルトやアイボルト又は他の手動利器を螺合
固定して、取外すことができる。The rotary joint and relay member divided into two parts are assembled and fixed by bolts as shown in the characteristic configuration, but the pressure oil supply route inlet port of the rotary joint is press-fitted with the relay member side pressure oil supply route outlet port. Since they are connected by the fitted metal oil supply pipe, this oil supply pipe has a function of firmly connecting the rotary joint and the relay member, but when the relay member is removed from the rotary joint, the connecting force of the oil supply pipe is It is too strong to remove simply by removing the bolts. Therefore, in the present invention, a screw hole can be formed on the opening side of the bolt through hole, and for example, a bolt, an eyebolt, or another manual device can be screwed and fixed to the screw hole for removal.
作用イより、伝動軸側圧油入口ポートと回転ジョイント
側圧油供給ポートとの位置合わせを正確に行う必要のあ
る回転ジョイントと伝動軸とをあらかじめ先組できるの
で、組付がより容易になるとともに、ミッションケース
外壁に大きな組付用の抜穴を設ける必要がない。Due to the action a, since the rotary joint and the transmission shaft, which require accurate alignment between the transmission shaft side pressure oil inlet port and the rotary joint side pressure oil supply port, can be assembled in advance, the assembly becomes easier and There is no need to provide large holes for assembly on the outer wall of the mission case.
作用ロより、中継部材にネジ孔を設けることによって、
ボルト等の手動利器を使って容易に取外しができるが、
この際にこのネジ孔を設ける位置として、回転ジョイン
トとの接合面とは反対がわ側面に開口するボルト貫通孔
に設けることによって、別に前記ネジ孔だけを専用に設
ける場合に比べてスペース利用率が向上するとともに、
このネジ孔を形成する製作過程で前記ボルト貫通孔を下
穴として利用できるので、改めて下穴加工の為の工程を
余分に見積もる必要がない。From the action B, by providing a screw hole in the relay member,
It can be easily removed using a manual instrument such as a bolt,
At this time, the screw hole is provided at a bolt through hole that opens on the side surface opposite to the joint surface with the rotary joint, so that the space utilization rate is higher than when the screw hole is provided separately. Is improved,
Since the bolt through hole can be used as a pilot hole in the manufacturing process for forming the screw hole, it is not necessary to estimate extra steps for drilling the pilot hole.
農用トラクタの圧油供給構造を前輪変速装置（１）との
関連で説明する。The pressure oil supply structure of the agricultural tractor will be described in relation to the front wheel transmission (1).
まず、前輪変速装置（１）について説明する。前輪変速
装置（１）とは前輪回転速度を後輪回転速度より高速に
する増速状態と前後輪の回転速度を略同速に設定する定
速状態とに切換可能な装置であって、畦際等での旋回時
に増速状態に切換え、車輪による圃場の荒れを防止でき
る構成をとることができるものである。ここで、その具
体構成を述べると、第２図に示すように、図示外の後輪
デフ機構への出力軸から動力伝達を受ける前輪への中間
伝動軸（２）を架設するとともに、この中間伝動軸
（２）に並行に前輪出力軸（３）を架設して、中間伝動
軸（２）と前輪出力軸（３）とに亘って前輪変速装置
（１）を設けてある。まず、中間伝動軸（２）に大小出
力ギヤ（４），（５）を遊嵌支持するとともに、前記大
出力ギヤ（４）と常時咬合する小入力ギヤ（６）と、前
記小出力ギヤ（５）と常時咬合する大入力ギヤ（７）と
を前輪出力軸（３）にスプライン嵌着してある。そし
て、前記大小出力ギヤ（４），（５）に対してクラッチ
ケース（８）を共有する油圧機器としての二つの摩擦多
板式油圧クラッチ（Ｃ1），（Ｃ2）が中間伝動軸（２）
に取付けられて装備され、中間伝動軸（２）から大小出
力ギヤ（４），（５）に動力伝達する構成を採ってい
る。ここに、大出力ギヤ（４）に伝動連結された増速側
クラッチ（Ｃ1）を入作動させると増速出力を前輪出力
軸（３）に供給でき、又反対に、小出力ギヤ（５）に伝
動連結された同速側クラッチ（Ｃ2）を入作動させると
同速出力を前輪出力軸（３）に出すことができる。First, the front wheel transmission (1) will be described. The front wheel transmission (1) is a device that can switch between a speed increasing state in which the front wheel rotation speed is higher than the rear wheel rotation speed and a constant speed state in which the rotation speeds of the front and rear wheels are set to substantially the same speed. It is possible to adopt a configuration in which the speed can be switched to the speed-up state at the time of turning, and the field can be prevented from being roughened by the wheels. Here, the specific structure thereof will be described. As shown in FIG. 2, an intermediate transmission shaft (2) to the front wheels, which receives power from the output shaft to the rear wheel differential mechanism (not shown), is erected, and the intermediate transmission shaft (2) is installed. A front wheel output shaft (3) is installed in parallel with the transmission shaft (2), and a front wheel transmission (1) is provided between the intermediate transmission shaft (2) and the front wheel output shaft (3). First, the small and large output gears (4) and (5) are loosely fitted and supported on the intermediate transmission shaft (2), and the small output gear (6) that constantly meshes with the large output gear (4) and the small output gear ( 5) and a large input gear (7) that constantly meshes are spline-fitted to the front wheel output shaft (3). Further, two friction multi-plate hydraulic clutches (C 1 ) and (C 2 ) as hydraulic devices sharing the clutch case (8) with the large and small output gears (4) and (5) are connected to the intermediate transmission shaft (2). )
It is mounted and installed on the vehicle and has a structure for transmitting power from the intermediate transmission shaft (2) to the large and small output gears (4) and (5). If a speed-increasing clutch (C 1 ) transmission-coupled to the large output gear (4) is activated, the speed-increasing output can be supplied to the front wheel output shaft (3), and conversely, the small-output gear (5) ), The same speed side clutch (C 2 ) that is transmission-coupled to it can be operated to output the same speed output to the front wheel output shaft (3).
第１図及び第３図に示すように、このような機能を有す
る油圧機器としての両クラッチ（Ｃ1），（Ｃ2）に対し
て圧油を供給する為の圧油供給経路（Ａ）を前記中間伝
動軸（２）の軸内に形成するとともにこの伝動軸（２）
の外周面に環状の供給油路（ｆ），（ｆ）を設け、前記
小出力ギヤ（５）の横側方に回転ジョイント（14）を設
け、この回転ジョイント（14）に前記圧油供給経路
（Ａ）に連通する圧油供給経路（Ｂ）を形成してある。
又、前記回転ジョイント（14）とミッションケース（1
5）外壁圧油供給部（16）との間に中継部材（９）を設
け、この中継部材（９）を回転ジョイント（14）に取付
けてある。この中継部材（９）にも回転ジョイント（1
4）に連通する圧油供給経路（Ｄ）を設けてあり、これ
ら３つの圧油供給経路（Ａ），（Ｂ），（Ｃ）は増速側
クラッチ（Ｃ1）に連通する増速圧油供給経路（Ａ1），
（Ｂ1），（Ｄ1）と同速側クラッチ（Ｃ2）に連通する
同速圧油供給経路（Ａ2），（Ｂ2），（Ｄ2）との２系
統設けてある。前記中継部材（９）は回転ジョイント
（14）側に形成したボルト螺合用ねじ孔（14a）に対し
て、中継部材（９）を貫通する孔（9a）を介して挿通さ
れたボルト（10）を螺合させることによって回転ジョイ
ント（14）に取付固定されている。一方、中継部材
（９）側出口ポート（ａ）と回転ジョイント側入口ポー
ト（ｂ）との間にパイプジョイントとしてのゴムコーテ
ィングを施した金属製第１給油パイプ（11），（11）が
圧入嵌着され、シール機能を兼ね備えた連結パイプとし
て用いられている。したがって、前記第１給油パイプ
（11），（11）は圧入嵌着されているので中継部材
（９）を回転ジョイント（14）から分離する際に単に引
張るだけでは分離できずに手間取る。そこで、第４図に
示すように、回転ジョイント（14）を中継部材（９）と
ともに、ミッションケース（15）の抜穴（15a）に臨ま
せて下方に回転させ、この状態で中間部材（９）の回転
ジョイント（14）に対する接合面とは反対がわ側面にお
ける貫通孔（9a）入口部分に刻設されたネジ孔（9b）を
利用して中間部材取付取外し用のボルト（17）を前記取
付ボルト（10）に替えて装着し、それを引張ることによ
って中継部材（９）を容易に取外すことができる。ミッ
ションケース外壁圧油供給部（16）における出口ポート
（Ｃ）と中継部材（９）側入口ポート（ｄ）には金属製
第２給油パイプ（12），（12）が圧入嵌着され、シール
機能付連結パイプとして用いられるとともに、中間伝動
軸（２）の回転とともに共回りしようとする回転ジョイ
ント（14）のその共回りを抑える機能を有している。そ
して、前記第２給油パイプ（12）の内周面にネジを刻設
し、このネジに第５図に示すように、後記する入口ポー
ト（ｅ）から取外し用のボルト（18）を差し込み螺合
し、このボルト（18）を引張ることによって、第２給油
パイプ（12）を取外すことができ、中継部材（９）との
連係を断つことができる。As shown in FIGS. 1 and 3, a pressure oil supply path (A) for supplying pressure oil to both clutches (C 1 ) and (C 2 ) as hydraulic equipment having such a function. Is formed within the shaft of the intermediate transmission shaft (2) and the transmission shaft (2) is formed.
Annular supply oil passages (f), (f) are provided on the outer peripheral surface of the, and a rotary joint (14) is provided laterally of the small output gear (5), and the pressure oil is supplied to the rotary joint (14). A pressure oil supply path (B) communicating with the path (A) is formed.
Also, the rotary joint (14) and the mission case (1
5) A relay member (9) is provided between the outer wall pressure oil supply section (16) and this relay member (9) is attached to the rotary joint (14). This relay member (9) also has a rotary joint (1
The pressure oil supply path (D) communicating with 4) is provided, and these three pressure oil supply paths (A), (B), (C) are speed increasing pressures communicating with the speed increasing side clutch (C 1 ). Oil supply path (A 1 ),
Two systems of (B 1 ), (D 1 ) and a constant speed pressure oil supply path (A 2 ), (B 2 ), (D 2 ) communicating with the constant speed side clutch (C 2 ) are provided. The relay member (9) is inserted into a bolt screwing screw hole (14a) formed on the rotary joint (14) side through a hole (9a) penetrating the relay member (9). It is attached and fixed to the rotary joint (14) by screwing. On the other hand, the metal first oil supply pipes (11) and (11) with a rubber coating as a pipe joint are press-fitted between the relay member (9) side outlet port (a) and the rotary joint side inlet port (b). It is fitted and used as a connecting pipe that also has a sealing function. Therefore, since the first oil supply pipes (11), (11) are press-fitted and fitted, when the relay member (9) is separated from the rotary joint (14), it cannot be separated simply by pulling it, which is troublesome. Therefore, as shown in FIG. 4, the rotary joint (14) is rotated together with the relay member (9) so as to face the hole (15a) of the transmission case (15) and rotate downward, and in this state. ), The bolt (17) for attaching and detaching the intermediate member is used by utilizing the screw hole (9b) formed in the inlet portion of the through hole (9a) on the side surface opposite to the joint surface of the rotary joint (14). The relay member (9) can be easily removed by mounting it instead of the mounting bolt (10) and pulling it. Metal second oil supply pipes (12) and (12) are press-fitted into the outlet port (C) and the relay member (9) side inlet port (d) of the transmission case outer wall pressure oil supply part (16) to seal the seal. It is used as a functioning connecting pipe and has a function of suppressing the co-rotation of the rotary joint (14) that tries to co-rotate with the rotation of the intermediate transmission shaft (2). Then, a screw is engraved on the inner peripheral surface of the second oil supply pipe (12), and a bolt (18) for removal is inserted into the screw from the inlet port (e) described later as shown in FIG. Then, by pulling the bolt (18), the second oil supply pipe (12) can be removed, and the linkage with the relay member (9) can be cut off.
一方、ミッションケース（15）外壁圧油供給部（16）に
おける入口ポート（ｅ）に対しては電磁制御バルブが配
管（13）接続され、圧油を制御するように構成してある
とともに、この電磁バルブをステアリング操作によって
切換える構成を採ってある。つまり、ステアリング操作
による前輪の切れ角を検出するセンサを設け、このセン
サが設定角度（例えば40°以上）を感知した場合には前
記電磁バルブを切換えて増速側油圧クラッチ（Ｃ1）に
圧油を供給して、前輪を増速状態に切換えるようにして
ある。On the other hand, an electromagnetic control valve is connected to the inlet port (e) of the outer wall pressure oil supply section (16) of the mission case (15) by a pipe (13) to control the pressure oil. The electromagnetic valve is switched by steering operation. That is, a sensor for detecting the turning angle of the front wheels due to the steering operation is provided, and when the sensor detects a set angle (for example, 40 ° or more), the electromagnetic valve is switched to apply pressure to the speed increasing side hydraulic clutch (C 1 ). By supplying oil, the front wheels are switched to the speed increasing state.
イ 前記油圧クラッチ（Ｃ1），（Ｃ2）以外の油圧ポン
プ等他の油圧機器への給油構造に上記構成のものを適用
してもよい。B. The above structure may be applied to a structure for supplying oil to other hydraulic equipment such as hydraulic pumps other than the hydraulic clutches (C 1 ) and (C 2 ).
ロ 前記中継部材（９）のボルト貫通孔（9a）開口側に
設けるネジ孔としては、このボルト貫通孔（9a）を下孔
として、しかもボルト貫通孔径より大径のものであれば
同芯状に形成されてなくてもよい。(B) The screw hole provided on the opening side of the bolt through hole (9a) of the relay member (9) is concentric if the bolt through hole (9a) is a lower hole and has a diameter larger than the bolt through hole diameter. Need not be formed.
尚、実用新案登録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、該記入により本考案は添付図
面の構造に限定されるものではない。It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.
図面は本考案に係る農用トラクタの圧油供給構造の実施
例を示し、第１図は回転ジョイントと中継部材の連結状
態を示す分解図、第２図は前輪変速装置を示す断面図、
第３図は回転ジョイントと中継部材の連結状態を示す横
断平面図、第４図は中継部材を回転ジョイントから取外
す状態を示す縦断面図、第５図は第２給油パイプを取外
す状態を示す横断平面図である。 （２）……伝動軸、（９）……中継部材、（9a）……ボ
ルト貫通用孔、（9b）……ネジ孔、（10）……ボルト、
（11）……パイプジョイント、（14）……回転ジョイン
ト、（Ａ），（Ｄ）……圧油供給経路、（ａ）……中継
部材側供給油路出口ポート、（ｂ）……回転ジョイント
側供給油路入口ポート。1 shows an embodiment of a pressure oil supply structure for an agricultural tractor according to the present invention, FIG. 1 is an exploded view showing a connection state of a rotary joint and a relay member, FIG. 2 is a sectional view showing a front wheel transmission,
FIG. 3 is a cross-sectional plan view showing a connected state of the rotary joint and the relay member, FIG. 4 is a vertical cross-sectional view showing a state where the relay member is removed from the rotary joint, and FIG. 5 is a cross-sectional view showing a state where the second oil supply pipe is removed. It is a top view. (2) …… Transmission shaft, (9) …… Relay member, (9a) …… Bolt penetration hole, (9b) …… Screw hole, (10) …… Bolt,
(11) ...... Pipe joint, (14) ...... Rotary joint, (A), (D) ...... Pressure oil supply path, (a) ...... Relay member side supply oil path outlet port, (b) ...... Rotation Joint side supply oil passage inlet port.
Claims (1)
油供給経路（Ａ）を形成するとともに、前記伝動軸
（２）の外周面に開口する前記圧油供給経路（Ａ）の入
口ポートに外部からの圧油を供給する回転ジョイント
（14）を前記伝動軸（２）に外嵌してある農用トラクタ
の圧油供給構造であって、前記回転ジョイント（14）と
この回転ジョイント（14）に圧油を供給する圧油供給部
（16）を設けたミッションケース外壁との間に圧油供給
経路（Ｄ）を設けた中継部材（９）を介装するととも
に、前記回転ジョイント（14）にボルト螺合用孔（9a）
を設け、中継部材側供給油路出口ポート（ａ）と回転ジ
ョイント側供給油路入口ポート（ｂ）とに亘ってパイプ
ジョイント（11）を圧入嵌合させた状態で前記ボルト貫
通用孔（9a）を貫通したボルト（10）を前記ボルト螺合
用ネジ孔（14a）に締結して中継部材（９）を回転ジョ
イント（14）に固定するとともに、前記中継部材（９）
にボルト貫通用（14）との接合面とは反対がわ側面に開
口するボルト貫通孔（9a）の開口側に前記ボルト（10）
より大径のネジ孔（9b）を形成してある農用トラクタの
圧油供給構造。1. A pressure oil supply passage (A) to a hydraulic device (C 1 ) is formed in the transmission shaft (2), and the pressure oil supply passage (A) opened to the outer peripheral surface of the transmission shaft (2). A rotary tractor pressure oil supply structure in which a rotary joint (14) for supplying pressure oil from the outside to the inlet port of A) is externally fitted to the transmission shaft (2). A relay member (9) having a pressure oil supply path (D) is provided between the rotary joint (14) and a transmission case outer wall having a pressure oil supply section (16) for supplying pressure oil, and Bolt screw hole (9a) in the rotary joint (14)
And the pipe joint (11) is press-fitted between the relay member side supply oil passage outlet port (a) and the rotary joint side supply oil passage inlet port (b). ) Is fastened to the bolt screwing screw hole (14a) to fix the relay member (9) to the rotary joint (14) and the relay member (9).
The bolt (10) is provided on the opening side of the bolt through hole (9a) opening on the side surface opposite to the joint surface with the bolt penetration (14).
Pressure oil supply structure for agricultural tractors with larger diameter screw holes (9b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18740887U JPH0734754Y2 (en) | 1987-12-09 | 1987-12-09 | Pressure oil supply structure for agricultural tractors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18740887U JPH0734754Y2 (en) | 1987-12-09 | 1987-12-09 | Pressure oil supply structure for agricultural tractors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0190622U JPH0190622U (en) | 1989-06-14 |
| JPH0734754Y2 true JPH0734754Y2 (en) | 1995-08-09 |
Family
ID=31478564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18740887U Expired - Lifetime JPH0734754Y2 (en) | 1987-12-09 | 1987-12-09 | Pressure oil supply structure for agricultural tractors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734754Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19525343C2 (en) * | 1995-07-12 | 2000-11-09 | Gat Gmbh | Device for transferring fluid between machine parts rotatable relative to one another |
-
1987
- 1987-12-09 JP JP18740887U patent/JPH0734754Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0190622U (en) | 1989-06-14 |
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