JPH0227903A - Hydraulic piping structure of tractor - Google Patents

Hydraulic piping structure of tractor

Info

Publication number
JPH0227903A
JPH0227903A JP17859588A JP17859588A JPH0227903A JP H0227903 A JPH0227903 A JP H0227903A JP 17859588 A JP17859588 A JP 17859588A JP 17859588 A JP17859588 A JP 17859588A JP H0227903 A JPH0227903 A JP H0227903A
Authority
JP
Japan
Prior art keywords
hydraulic
oil
case
gear case
hydraulic pump
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.)
Pending
Application number
JP17859588A
Other languages
Japanese (ja)
Inventor
Tadashi Nakamura
正 中村
Noboru Wakabayashi
昇 若林
Junichi Tashiro
田代 潤一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP17859588A priority Critical patent/JPH0227903A/en
Publication of JPH0227903A publication Critical patent/JPH0227903A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)

Abstract

PURPOSE:To rationally circulate an oil in a transmission case and to suppress the temperature increase in a gear case by transferring the oil in the transmission case through a gear case to a hydraulic pump. CONSTITUTION:A gear case 2 is placed at the back of an engine E positioned at the front part of the machine body and a hydraulic pump P is placed near the gear case. The pressure oil sent from the hydraulic pump P is transferred by a hydraulic cylinder Cy for the vertical displacement of a working machine and the oil discharged from the hydraulic cylinder Cy is returned to a transmission case M positioned at the rear part of the machine body. The oil in the transmission case M is transferred through the gear case 2 to the hydraulic pump P.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、機体前部に配置されたエンジンの後方にギヤ
ケースを配備し、近傍には油圧ポンプを付設するととも
に、この油圧ポンプからの圧油を作業装置昇降用の油圧
シリンダへ供給し、この油圧シリンダからの排油を、機
体後部に配置されたミッションケースへ戻すように構成
してあるトラクタの油圧配管構造。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a gear case behind an engine located at the front of the aircraft body, a hydraulic pump attached nearby, and a pressure pump from the hydraulic pump. A tractor hydraulic piping structure configured to supply oil to a hydraulic cylinder for lifting and lowering working equipment, and to return drained oil from the hydraulic cylinder to a mission case located at the rear of the machine.

〔従来の技術〕[Conventional technology]

従来、トラクタの油圧配管構造では、ミッションケース
と油圧ポンプとの間に、また、油圧ポンプと作業装置駆
動用の油圧シリンダのコントロールバルブとの間に油圧
パイプをそれぞれ配管してあった。それによってミッシ
ョンケース内の潤滑油を油圧パイプを通して油圧ポンプ
で吸入加圧し、作動油として油圧パイプを通してコント
ロールバルブへ圧送し、更にコントロールバルブからの
排油をミッションケースへ戻すという循環系を構成して
あった。そして、エンジン後方のギヤケース内の潤滑油
はミッションケース内の潤滑油と混ざり合うことがなく
、前述の循環系とは独立していた。
Conventionally, in the hydraulic piping structure of a tractor, hydraulic pipes have been installed between a transmission case and a hydraulic pump, and between a hydraulic pump and a control valve of a hydraulic cylinder for driving a working device. This creates a circulation system in which the lubricating oil in the transmission case is sucked in and pressurized by a hydraulic pump through a hydraulic pipe, and then sent as working oil to the control valve through the hydraulic pipe, and the drained oil from the control valve is returned to the transmission case. there were. The lubricating oil in the gear case at the rear of the engine did not mix with the lubricating oil in the transmission case, and was independent of the circulation system described above.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかし、ギヤケース内の潤滑油はミッションケース内の
潤滑油に比較して少量である上にケース内に封入された
ままとなっている。しかも、エンジンから高速で回転す
る動力が入力してくる。そのため温度上昇が激しく、高
温になり易かった。
However, the amount of lubricating oil in the gear case is smaller than that in the transmission case, and the lubricating oil remains sealed within the case. Moreover, the power that rotates at high speed is input from the engine. As a result, the temperature rose rapidly and easily reached high temperatures.

そこで本発明では、ミッションケース内の潤滑油の循環
系を合理的に利用することによって、ギヤケースの温度
上昇を抑制することを目的としている。
Therefore, an object of the present invention is to suppress the temperature rise of the gear case by rationally utilizing the circulation system of lubricating oil within the transmission case.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成するために、本発明に係わるトラクタの
油圧配管構造では、ミッションケース内の油をギヤケー
スを介して油圧ポンプに送るように構成してある。
In order to achieve the above object, the hydraulic piping structure for a tractor according to the present invention is configured to send oil in the transmission case to the hydraulic pump via the gear case.

〔作 用〕[For production]

つまり、油圧ポンプによってギヤケース内の油を吸入し
、減少した分をミッションケースからの油で補うことに
なるので、ギヤケース内の油は、ミッションケース内の
油と混ざり合って油圧ポンプや油圧シリンダなどを循環
するようになる。
In other words, the oil in the gear case is sucked in by the hydraulic pump, and the reduced amount is supplemented with oil from the transmission case, so the oil in the gear case mixes with the oil in the transmission case and is used in hydraulic pumps, hydraulic cylinders, etc. will begin to circulate.

〔発明の効果〕 本発明をトラクタの油圧配管構造に適用することによっ
て、ギヤケース内の油とミッションケース内の油とがほ
ぼ同温度に平均化されることとなり、ギヤケースの温度
上昇を抑制することが可能になった。
[Effects of the Invention] By applying the present invention to the hydraulic piping structure of a tractor, the oil in the gear case and the oil in the transmission case are averaged to approximately the same temperature, thereby suppressing a temperature rise in the gear case. is now possible.

〔実施例〕〔Example〕

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1図に示されているのは四輪駆動型のトラクタである
。このトラクタは、運転B(1)の前部にエンジン(E
) を配備し、このエンジン(E)の後方にクラッチ(
C)及び出力高さ変更用のギヤケース(2)を連接する
とともに、運転部(1)の後方にミッションケース()
わを配備してある。
What is shown in FIG. 1 is a four-wheel drive tractor. This tractor has an engine (E
) and a clutch (
C) and a gear case (2) for changing the output height, and a transmission case () behind the driving part (1).
I have been deployed.

そしてギヤケース(2)から出力されるエンジン動力を
、運転部(1)の下方を通る第1伝動軸(3)を介して
ミッションケース(M)へ伝達し、ミッションケース(
M)で変速された動力を、第2伝動軸(4)を介してギ
ヤケース(2)の下部に内装された前輪増速装置(図示
せず)へ伝達するように構成してある。
The engine power output from the gear case (2) is then transmitted to the mission case (M) via the first transmission shaft (3) passing below the driving section (1).
The power shifted by M) is transmitted via the second transmission shaft (4) to a front wheel speed increasing device (not shown) installed in the lower part of the gear case (2).

前記エンジン(E)の側部には油圧ポンプ(P)を直結
してある。また、ミッションケース(M)の後上部にシ
リンダーケース(5)を固定してあり、このシリンダー
ケース(5)にリフトアーム(6)を揺動駆動するため
の油圧シリンダ(Cy)を内装してある。そして、ギヤ
ケース(2)と油圧ポンプ(P)との間に、また、油圧
ポンプ(P) と油圧シリンダ(Cy)のコントロール
バルブ(V)との間にそれぞれ油圧パイプ(7)、 (
8)を介して接続してあり、ギヤケース(2)内の潤滑
油を吸入してそれを作動油としてコントロールバルブ(
V)に圧送するようになっている。
A hydraulic pump (P) is directly connected to the side of the engine (E). In addition, a cylinder case (5) is fixed to the rear upper part of the mission case (M), and a hydraulic cylinder (Cy) for swinging the lift arm (6) is installed inside this cylinder case (5). be. There are hydraulic pipes (7) between the gear case (2) and the hydraulic pump (P), and between the hydraulic pump (P) and the control valve (V) of the hydraulic cylinder (Cy), respectively.
It is connected via the control valve (8), which sucks the lubricating oil in the gear case (2) and uses it as hydraulic oil.
V).

前記コントロールバルブ(v)はミッションケース(M
)  に連通しており、油圧シリンダ(Cy)から排出
された作動油をミッションケース()わ に戻すように
なっている。また、ミッションケース(M)の前下部と
ギヤケース(2)の後下部とを油圧パイプ(9)を介し
て接続してあり、油圧ポンプ(P)によって吸入された
潤滑油を随時補給できるようになっている。
The control valve (v) is connected to the transmission case (M
), and the hydraulic oil discharged from the hydraulic cylinder (Cy) is returned to the transmission case (). In addition, the front lower part of the mission case (M) and the rear lower part of the gear case (2) are connected via a hydraulic pipe (9), so that the lubricating oil sucked by the hydraulic pump (P) can be replenished at any time. It has become.

前記ギヤケース(2)には、第2図に示すように油圧パ
イプ(7)を上から差し込んである。ギヤケース(2)
内に位置する油圧パイプ(7)の上部にはエアー吸入孔
(10)を形成してある。油圧ポンプ(P) によって
潤滑油が吸入されだすと、ギヤケース(2)内のエアー
がこのエアー吸入孔(10)から吸い込まれ、ギヤケー
ス(2)内の油面がエアー吸入孔(10)付近にまで上
昇するようになっている。
As shown in FIG. 2, a hydraulic pipe (7) is inserted into the gear case (2) from above. Gear case (2)
An air suction hole (10) is formed in the upper part of the hydraulic pipe (7) located inside. When the hydraulic pump (P) starts sucking lubricating oil, the air inside the gear case (2) is sucked through the air suction hole (10), and the oil level inside the gear case (2) approaches the air suction hole (10). It is set to rise to.

尚、特許請求の範囲の項に図面との対照を便利にするた
めに符号を記すが、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 by the reference numerals.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は側面図、第2図はギヤケースの配管構造を示す
図である。 (2)・・・・・・ギヤケース、(E)・・・・・・エ
ンジン、(Cy)・・・・・・油圧ンリンダ、 ()わ・・・・・・ミッションケ ース、(P)・・・・・・油圧ポンプ。
FIG. 1 is a side view, and FIG. 2 is a diagram showing the piping structure of the gear case. (2) Gear case, (E) Engine, (Cy) Hydraulic cylinder, () Mission case, (P) ·····Hydraulic pump.

Claims (1)

【特許請求の範囲】[Claims] 機体前部に配置されたエンジン(E)の後方にギヤケー
ス(1)を配備し、近傍には油圧ポンプ(P)を付設す
るとともに、この油圧ポンプ(P)からの圧油を作業装
置昇降用の油圧シリンダ(Cy)へ供給し、この油圧シ
リンダ(Cy)からの排油を、機体後部に配置されたミ
ッションケース(M)へ戻すように構成してあるトラク
タの油圧配管構造であって、前記ミッションケース(M
)内の油をギヤケース(2)を介して油圧ポンプ(P)
に送るように構成してあるトラクタの油圧配管構造。
A gear case (1) is installed behind the engine (E) located at the front of the machine, and a hydraulic pump (P) is installed nearby, and the pressure oil from this hydraulic pump (P) is used to raise and lower work equipment. A tractor hydraulic piping structure configured to supply oil to a hydraulic cylinder (Cy) and return waste oil from the hydraulic cylinder (Cy) to a mission case (M) located at the rear of the machine body, The mission case (M
) through the gear case (2) to the hydraulic pump (P).
A tractor's hydraulic piping structure configured to send to.
JP17859588A 1988-07-18 1988-07-18 Hydraulic piping structure of tractor Pending JPH0227903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17859588A JPH0227903A (en) 1988-07-18 1988-07-18 Hydraulic piping structure of tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17859588A JPH0227903A (en) 1988-07-18 1988-07-18 Hydraulic piping structure of tractor

Publications (1)

Publication Number Publication Date
JPH0227903A true JPH0227903A (en) 1990-01-30

Family

ID=16051205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17859588A Pending JPH0227903A (en) 1988-07-18 1988-07-18 Hydraulic piping structure of tractor

Country Status (1)

Country Link
JP (1) JPH0227903A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8117981B2 (en) 2006-01-25 2012-02-21 Origin Electric Company, Limited Liquid material supplying apparatus and liquid material supplying method
US9655360B2 (en) 2004-01-23 2017-05-23 Eden Research Plc Nematicidal compositions and methods of using them
US10383329B2 (en) 2012-11-21 2019-08-20 Eden Research Plc Preservatives
US10638750B2 (en) 2004-05-20 2020-05-05 Eden Research Plc Compositions containing a hollow glucan particle or a cell wall particle encapsulating a terpene component, methods of making and using them
US10667512B2 (en) 2005-11-30 2020-06-02 Eden Research Plc Terpene-containing compositions and methods of making and using them

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9655360B2 (en) 2004-01-23 2017-05-23 Eden Research Plc Nematicidal compositions and methods of using them
US10729130B2 (en) 2004-01-23 2020-08-04 Eden Research Plc Nematicidal compositions and methods of using them
US10638750B2 (en) 2004-05-20 2020-05-05 Eden Research Plc Compositions containing a hollow glucan particle or a cell wall particle encapsulating a terpene component, methods of making and using them
US10667512B2 (en) 2005-11-30 2020-06-02 Eden Research Plc Terpene-containing compositions and methods of making and using them
US8117981B2 (en) 2006-01-25 2012-02-21 Origin Electric Company, Limited Liquid material supplying apparatus and liquid material supplying method
US10383329B2 (en) 2012-11-21 2019-08-20 Eden Research Plc Preservatives

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