JPS6094003A - Working machine lifting and falling hydraulic apparatus of agricultural tractor - Google Patents
Working machine lifting and falling hydraulic apparatus of agricultural tractorInfo
- Publication number
- JPS6094003A JPS6094003A JP20164383A JP20164383A JPS6094003A JP S6094003 A JPS6094003 A JP S6094003A JP 20164383 A JP20164383 A JP 20164383A JP 20164383 A JP20164383 A JP 20164383A JP S6094003 A JPS6094003 A JP S6094003A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hydraulic
- auxiliary
- pulp
- hydraulic control
- 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
Links
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は農用トラフ々−の機体に常備された作業機昇
降用の油圧装置に補助油圧装置を付加してす７トアーム
のリフト力を増大させようとするもので、従来装置とし
ては実開昭５５−１１８９０３号の考案があるが、作業
機昇降用油圧装置の昇降機構と固定側との間に介装した
複動シリンダーの各シリンダー室を相互に連通した回路
にロック調整弁を設けた作業機昇降用油圧装置の衝撃綴
和装置であって、作業機昇降用のシリンダーに対する油
圧の給排と複動シリンダーに対する油圧の給排とが同一
の油圧コントロールパルプの作用で同調的に行なうもの
ではない。DETAILED DESCRIPTION OF THE INVENTION This invention attempts to increase the lifting force of the tow arm by adding an auxiliary hydraulic system to the hydraulic system for raising and lowering working equipment, which is permanently installed in the body of agricultural troughs. As a conventional device, there is a device proposed in Utility Model Application No. 55-118903, which uses a circuit that interconnects each cylinder chamber of a double-acting cylinder interposed between the lifting mechanism and the fixed side of the hydraulic device for lifting and lowering the work machine. This is an impact binding device for a hydraulic system for lifting and lowering work equipment that is equipped with a lock adjustment valve, and the action of hydraulic control pulp is the same for supplying and discharging hydraulic pressure to the cylinder for lifting and lowering the work equipment and to supply and discharge hydraulic pressure to the double-acting cylinder. It is not something that is done synchronously.
この発明は作業機昇降用の主シリンダーに対する油圧の
給排とリフトｔａｍ側と機体側とのｆｌ［Ｋ介装した補
助シリンダーに対する油圧の給排を油圧コントロールパ
ルプを介して同調的に行なう農用トラクターの作業機昇
降油圧装置を提供することを目的とする。以下、図面に
基づいてこの発明の実施例の一つを説明する。This invention is an agricultural tractor that synchronously supplies and discharges hydraulic pressure to the main cylinder for lifting and lowering the work equipment and to the auxiliary cylinders installed on the lift tam side and the machine body side through a hydraulic control pulp. The purpose is to provide a hydraulic system for lifting and lowering work equipment. Hereinafter, one embodiment of the present invention will be described based on the drawings.
まず、構成について説明する。農用トラクターの機体（
１ンの後部□ミッションケース（２）の上に設けられた
リフ）＋−ス（８）の左右横方向に９７ト軸（４）を回
動自在に架設し、このり７ト軸０）の左右端部にリフト
アーム（５バ６）を固着し、す７トナース（８）の内部
においては、リフト軸（４）に作動アーム（６）が一体
に回動するよう取付けられ、リフトナース（８）に取付
けられた主シリンダ−（７）に摺動可能に嵌合したピス
トンロフト（８）の端部を上記作動アーム（６）に枢着
連結している。またり７トクース（８）の右側面には作
業機上昇位置、中立位置及び下降位置へ操作可能な３位
置１方弁の油圧コントロールパルプ（９）を取付けると
ともに主シリンダ−（））と油圧コントロールパルプ（
９）とを接続する中間油路ａ呻に逆止弁付可変流量制御
弁（川とセフティ−パルプ（ロ）とを介装し、機体（り
の前部に設けた油圧ポンプ（ロ）と油圧コントロールパ
ルプ（９）とを接続する基部側油路（６）に油圧外部取
出部（１ｆ９を設けている。そして後部ミッションケー
ス（２）の上部Ｋｆｆけたドローバ−ヒツチ０句の挿入
部（１７）には、取付孔に）（ホ）を設けた基板に）と
仁の基板（ロ）の左側部に左右に離間して支持板−に）
を並設するとともに、この支持板に）Ｈの上部に左右方
向に通って、上側が機体（１）側に近くなるような斜め
上下の長孔やυ１０を設けた取付ブラケットに）の基板
（ロ）を挿入して取付ピンに）に）をヒツチ孔（ハ）−
・・・及び取付孔（ホ）（ホ）に挿入して取付けている
。左側のリフトアーム（６）にリフティングロフト（ハ
）を取付けた取付ピンに）の内側突出部に上端を取付け
た補助ピストンロフトに）を下端を取付ブラケットに）
の長孔Ｑυに）に取付ピン■で取付けた補助シリンダー
四に嵌合し、補助シリンダーに）に上記油圧外部取出部
（ホ）のバイパスメタルに）において、基部ｆＩｎ路（
２）から分岐した油路・υを接続し、補助シリンダー−
に対しては油圧コントロールパルプ（９）ニよって主シ
リンダ−（７）と同調的に圧油が給排されるよう構成し
ている。そして油圧外部取出部（ロ）にはバイパスメタ
ル員を介してローダ一作業機（図示省略）を制御するロ
ーダ−パルプ■を取付ける場合にハ、ローダ−パルプ（
２）と油圧コントロールパルプ（９）との間の油路■か
ら補助シリンダー四への油路Ｏυを分岐し、油路ｅυの
分鼓点と油圧ポンプ（ロ）との間にリリーフパルプ−を
設けている。なおに）は油圧コントロールパルプ（９）
のポジションレバー、←→は後車輪である。First, the configuration will be explained. Agricultural tractor body (
A 97 shaft (4) is rotatably installed in the left and right lateral directions of the rif) + - space (8) provided on the rear □ mission case (2) of 1. A lift arm (5 bars 6) is fixed to the left and right ends of the lift nurse (8), and an operating arm (6) is attached to the lift shaft (4) so as to rotate together with the lift nurse (8). The end of a piston loft (8) slidably fitted in the main cylinder (7) mounted on the piston loft (8) is pivotally connected to the actuating arm (6). A 3-position, 1-way valve hydraulic control pulp (9) is installed on the right side of the 7-tooth (8) and can be used to control the main cylinder ()) and hydraulic control. pulp(
A variable flow rate control valve with a check valve (river) and a safety pulp (b) are interposed in the intermediate oil passage a that connects the A hydraulic external outlet (1f9) is provided in the base side oil passage (6) that connects with the hydraulic control pulp (9).The upper part of the rear transmission case (2) is a drawbar hitch 0 insertion part (17). ), on the board with (e) in the mounting hole and on the left side of the board (b) on the support plate -)
are installed in parallel, and on this support plate, the board ( Insert the (b) into the mounting pin) and hit the hole (c) -
...and is installed by inserting it into the mounting holes (E) and (E). Attach the lifting loft (c) to the mounting pin attached to the left lift arm (6)).
Fit into the auxiliary cylinder 4 which is attached to the elongated hole Qυ) with the mounting pin
2) Connect the oil passage/υ branched from the auxiliary cylinder.
The structure is such that pressure oil is supplied to and discharged from the main cylinder (7) by means of a hydraulic control pulp (9) synchronously with the main cylinder (7). When attaching the loader pulp ■ that controls the loader work machine (not shown) to the hydraulic external extraction part (b) via a bypass metal member, the loader pulp (c)
Branch the oil path Oυ to the auxiliary cylinder 4 from the oil path ■ between 2) and the hydraulic control pulp (9), and provide a relief pulp between the drum point of the oil path eυ and the hydraulic pump (b). ing. Furthermore) is hydraulic control pulp (9)
The position lever, ←→ is the rear wheel.
つぎに、作用について説明する。農用トラクターの機体
（１）の後部に３点リンク機栴を介して作業機を取付け
るとともに、補助シリンダーに）に油路参ρを接続し、
エンジンを始動して油圧ポンプ０３）を駆動する。そし
てポジションレバー（２）を蕃署鼻前側へ回動すると油
圧コントロールパルプ（９）は作業機上昇位置に切換え
られ ゛ ゛
姶油圧コントロールバルブ（９）を介した圧油は逆止弁
付可変流量制御弁ａυを介して主シリンダ−（７）に送
られるとともに、主シリンダ−（ηヒ同調的に圧油が基
部側油路（２）から補助シリンダー四に送られて作業機
が上昇し、ポジションレバー（２）を中間に戻すと油圧
コントロールパルプ（９）は中立位置に切換えられ、作
業機は上昇位置を保持する。このｎｊｌ油圧どンブＯＩ
から送られる圧油はリリーフ／＜ルプーを介して後部ミ
ツ、ジョンケース（２）に戻っている。Next, the effect will be explained. Attach the working machine to the rear of the agricultural tractor body (1) via a three-point link, and connect the oil line to the auxiliary cylinder ().
Start the engine and drive the hydraulic pump 03). Then, when the position lever (2) is rotated to the front side of the station nose, the hydraulic control valve (9) is switched to the work equipment raised position. Pressure oil is sent to the main cylinder (7) via the control valve aυ, and pressure oil is synchronously sent from the base side oil passage (2) to the auxiliary cylinder 4 to raise the work machine. When the position lever (2) is returned to the intermediate position, the hydraulic control pulp (9) is switched to the neutral position, and the work equipment maintains the raised position.
Pressure oil sent from the rear pipe is returned to the rear case (2) via the relief/rupu.
そしてポジションレバー慎を後方へ回動すると油圧コン
トロールパルプ（９）は作業機下降位置に切換えられ作
業機の重量で押された主シリンダ−（７）と補助シリン
ダーに）の圧油は油圧ポンプ（へ）力）ら圧送されてく
る圧油とともに油圧コントロールパルプ（９）を介して
後部ミッションケース（２）に戻される。Then, when the position lever is turned backward, the hydraulic control pulp (9) is switched to the lower position of the work equipment, and the pressure oil in the main cylinder (7) and the auxiliary cylinder, which are pushed by the weight of the work equipment, is transferred to the hydraulic pump ( It is returned to the rear transmission case (2) via the hydraulic control pulp (9) together with the pressure oil pumped from
この発明はリフト機構側と機枠側との間に補助シリンダ
ーと補助ピストンロフトから構成された補助油圧装置を
介装し油圧コントロールパルプと主シリンダーとの油路
に逆止弁付可変流量制御弁を介装するとともに、油圧コ
ントロールパルプの作用を介して補助シリンダーに対し
て主シリンダーに同調して圧油を送るよう構成したので
、主シリンダーの荷揚げ能力以上に重量のある作業機を
機体に装着して作業が可能となり、作業能率をＬげるこ
とができる。This invention includes an auxiliary hydraulic device consisting of an auxiliary cylinder and an auxiliary piston loft between the lift mechanism side and the machine frame side, and a variable flow rate control valve with a check valve in the oil path between the hydraulic control pulp and the main cylinder. At the same time, the configuration is such that pressure oil is sent to the auxiliary cylinder in synchronization with the main cylinder through the action of the hydraulic control pulp, making it possible to attach work equipment that is heavier than the main cylinder's unloading capacity to the aircraft. This makes it possible to perform the work in a variety of ways, thereby increasing work efficiency.
図面はこの発明の実施例の一つを示し、第１図は全体側
面図、第２図は作業機昇降油圧装置の油圧回路図、第３
図は外部油圧取出部にローダ−パルプを取付けた場合の
油圧回路図、第４図は取付ブラケットの取付関係を示す
斜視図、第５図は取付プラケットの側面図、第６図は補
助油圧装置の取付関係を示した背面図である。
主な符号の説明
（１）・・・機体、（８）・・・す７トケース、（４）
・・・リフト軸、（５）・・・す７トアーム、（７）・
・・主シリンダ−、（８）・・・ピストンロフト、（’
）・・・油圧コントロールパルプ、αυ・・・逆止弁付
可変流量制御弁、に）・・・長孔、に）・・・取付ブ？
＋７ト、（ロ）・・・補助ピストンロフト、に）・・・
補助シリンダー。
特許出願人の名称
井関ｍ機株式会社
代表者 井 関 昌 孝
第、１図
第−５図
（１８６図The drawings show one embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is a hydraulic circuit diagram of a working machine lifting/lowering hydraulic system, and FIG.
The figure is a hydraulic circuit diagram when the loader pulp is attached to the external hydraulic pressure outlet, Figure 4 is a perspective view showing the mounting relationship of the mounting bracket, Figure 5 is a side view of the mounting bracket, and Figure 6 is the auxiliary hydraulic system. FIG. 3 is a rear view showing the attachment relationship. Explanation of main symbols (1)... Aircraft, (8)... Case, (4)
... Lift axis, (5) ... Su7to arm, (7).
・・Main cylinder, (8) ・・Piston loft, ('
)...Hydraulic control pulp, αυ...Variable flow control valve with check valve, To)...Long hole, To)...Mounting block?
+7 (b)...Auxiliary piston loft, (b)...
Auxiliary cylinder. Name of Patent Applicant: Iseki Mki Co., Ltd. Representative: Takashi Iseki, Figures 1-5 (Figure 186)
Claims (1)
を嵌合した主シリンダーと油圧ポンプとを作業機の上昇
位置、中立位置及び下降位置とに切換えられる油圧コン
トロールパルプを設けた農用トラクターにおいて、リフ
ト機構側と機枠側との間に補助シリンダーと補助ピスト
ンロフトから構成された補助油圧装置を介装し、油圧コ
ントロールパルプと主シリンダーとの油路に逆止弁付可
変流量制御弁を介装するとともに油圧コントロールパル
プの作用を介して補助シリンダーに対して主シリンダー
に同調して圧油な送るよう構成した仁とを特徴とする作
業機昇降油圧装置。In an agricultural tractor equipped with a hydraulic control pulp that allows the main cylinder fitted with a main piston loft connected to a 7-tooth shaft and a hydraulic pump to be switched between a raised position, a neutral position, and a lowered position of the work equipment. An auxiliary hydraulic system consisting of an auxiliary cylinder and an auxiliary piston loft is installed between the lift mechanism side and the machine frame side, and a variable flow rate control valve with a check valve is installed in the oil path between the hydraulic control pulp and the main cylinder. A hydraulic system for lifting and lowering a working machine, characterized by a cylinder which is arranged to feed pressurized oil to the auxiliary cylinder in synchronization with the main cylinder through the action of a hydraulic control pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20164383A JPS6094003A (en) | 1983-10-27 | 1983-10-27 | Working machine lifting and falling hydraulic apparatus of agricultural tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20164383A JPS6094003A (en) | 1983-10-27 | 1983-10-27 | Working machine lifting and falling hydraulic apparatus of agricultural tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6094003A true JPS6094003A (en) | 1985-05-27 |
Family
ID=16444481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20164383A Pending JPS6094003A (en) | 1983-10-27 | 1983-10-27 | Working machine lifting and falling hydraulic apparatus of agricultural tractor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6094003A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0194002U (en) * | 1987-12-16 | 1989-06-21 | ||
| JP2016049050A (en) * | 2014-08-29 | 2016-04-11 | 井関農機株式会社 | Work vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311121A (en) * | 1976-07-16 | 1978-02-01 | Taiyo Chuki Kk | Continuous moulding apparatus for casting mould |
-
1983
- 1983-10-27 JP JP20164383A patent/JPS6094003A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311121A (en) * | 1976-07-16 | 1978-02-01 | Taiyo Chuki Kk | Continuous moulding apparatus for casting mould |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0194002U (en) * | 1987-12-16 | 1989-06-21 | ||
| JPH0510563Y2 (en) * | 1987-12-16 | 1993-03-16 | ||
| JP2016049050A (en) * | 2014-08-29 | 2016-04-11 | 井関農機株式会社 | Work vehicle |
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