JPS5926807Y2 - Tractor with hydraulic lifting device - Google Patents
Tractor with hydraulic lifting deviceInfo
- Publication number
- JPS5926807Y2 JPS5926807Y2 JP1975172284U JP17228475U JPS5926807Y2 JP S5926807 Y2 JPS5926807 Y2 JP S5926807Y2 JP 1975172284 U JP1975172284 U JP 1975172284U JP 17228475 U JP17228475 U JP 17228475U JP S5926807 Y2 JPS5926807 Y2 JP S5926807Y2
- Authority
- JP
- Japan
- Prior art keywords
- communication passage
- transmission case
- case
- passage
- tractor
- 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
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Description
【考案の詳細な説明】
本考案は機体に装備された適宜作業装置を上下動させる
ための油圧昇降装置を備えたトラクターに関する。[Detailed Description of the Invention] The present invention relates to a tractor equipped with a hydraulic lifting device for vertically moving a working device installed on the machine body.
詳しくはシリンダ一本体内に挿嵌したピストンを該シリ
ンダ一本体内のピストン室への圧油供給をして往復動さ
せ、該ピストンの往復動によってリフト軸を回動し該リ
フト軸に設けたリフトアームを上下動させるべく威した
油圧昇降装置を備えたトラクターに関するもので、前記
シリンダ一本体を前記ミッションケース内に内装すべく
、前記シリンダ一本体のヘッド部をミッションケース内
の隔壁で支持し該ミッションケース内の空間を有効に利
用して全体としての形状を極めてコンパクトに纒めるこ
とができ乍も、前記シリンダ一本体内のピストン室への
圧油供給を前記ミッションケース壁に形成した連通路を
介して行なうべく構威し、この□ツションケース内での
パイピイングを省略して構造の簡素化を計るべく威した
ものである。Specifically, a piston inserted into a cylinder main body is caused to reciprocate by supplying pressure oil to a piston chamber within the cylinder main body, and a lift shaft is rotated by the reciprocating movement of the piston, which is provided on the lift shaft. This relates to a tractor equipped with a hydraulic lifting device that moves a lift arm up and down, and the head portion of the cylinder body is supported by a partition wall inside the transmission case so that the cylinder body is installed inside the transmission case. While the space within the mission case can be effectively utilized to make the overall shape extremely compact, the pressure oil supply to the piston chamber within the cylinder body is formed on the wall of the mission case. This is done through a communication path, and the piping inside the tension case is omitted to simplify the structure.
以下本考案実施の態様を例示図に基づいて説明する。Hereinafter, embodiments of the present invention will be described based on illustrative drawings.
図において１は耕耘装置などの適宜作業装置が装備され
たトラクター（図示せず）のミッションケースを示すも
ので、このミッションケースは前後面が夫々開口し、そ
の前面開口部１ａには蓋板２が、後面開口部１ｂには後
部カバー３が夫夫着脱自在に取付けられると共に、該ミ
ッションケース１内には２枚の隔壁１ｃ、１ｄが設けら
れている。In the figure, reference numeral 1 indicates a mission case of a tractor (not shown) equipped with appropriate working equipment such as a tiller. However, a rear cover 3 is removably attached to the rear opening 1b, and two partition walls 1c and 1d are provided within the mission case 1.
又このミッションケース１内で前記隔壁１ｃと蓋板２と
の間に形成された画室ａ内に、トラクターに搭載した原
動機に主クラッチなどを介して連動連結する回転軸４と
、該回転軸４からの動力を変速して駆動車輪に伝達する
油圧クラッチ付変速装置５及びギヤーによる副変速装置
６とが内装軸架され、且つ前記ミッションケース１内で
前記隔壁１ｄと後部カバー３との間に形成された画室す
内に、作業装置への動力取出軸７と、前記回転軸４かも
の動力を変速してこの動力取出軸７に伝達するギヤー変
速装置８とが内装軸架されている。Also, in a compartment a formed between the partition wall 1c and the cover plate 2 in the mission case 1, there are provided a rotating shaft 4 which is interlocked and connected to a prime mover mounted on a tractor via a main clutch or the like; A transmission device 5 with a hydraulic clutch and a sub-transmission device 6 with gears are installed inside the transmission case 1 between the partition wall 1d and the rear cover 3. Inside the formed compartment, a power take-off shaft 7 for the working device and a gear transmission 8 for changing the speed of the power of the rotary shaft 4 and transmitting the same to the power take-off shaft 7 are mounted internally.
尚図中９は前記油圧クラッチ付変速装置５の作動用油圧
ポンプであって、該油圧ポンプ９は前記回転軸４０回転
に伴って駆動される。In the figure, reference numeral 9 denotes a hydraulic pump for operating the transmission device 5 with a hydraulic clutch, and the hydraulic pump 9 is driven as the rotating shaft 40 rotates.
斯くて本考案は上記の如きミッションケース１において
、前記隔壁１ｃ、ｉｄ間に形成された画室Ｃ内の上方部
で一側方に偏位せる位置に、シリンダ一本体１０を機体
の前後方向に向うよう位置させると共に、このシリンダ
一本体１０のヘッド部を前記隔壁１ｃに形成された差込
孔に挿嵌して該シリンダ一本体１０を隔壁１ｃの後向面
に支持させ、且つこのシリンダ一本体１０内にピストン
１１を往復動自在に挿嵌する一方く作業装置を吊持する
リフトアーム１４をもつリフト軸１３を、前記ミッショ
ンケース１内の後方上部に該ケース１を横切ってその両
端部が円外側方に突出するよう軸架すると共に、このリ
フト軸１３から前記ミッションケース１内下方に延びる
揺動杆１５を一体的に連出し、この揺動杆１５を前記ピ
ストン１１にピストンロッド１２を介して連動連結し、
且つこの揺動杆１５の後方側への揺動範囲を前記ミッシ
ョンケース１における後部カバー３への当接をして規制
すべく該後部カバー３により揺動杆１５の揺動範囲規制
部材を兼用せしめる。Therefore, in the mission case 1 as described above, the present invention places the cylinder body 10 in the longitudinal direction of the aircraft body at a position that is offset to one side in the upper part of the compartment C formed between the partition walls 1c and id. At the same time, the head portion of the cylinder main body 10 is inserted into the insertion hole formed in the partition wall 1c to support the cylinder main body 10 on the rear surface of the partition wall 1c. A lift shaft 13 having a lift arm 14 for reciprocatingly inserting a piston 11 into the main body 10 and suspending a working device is installed at the rear upper part of the mission case 1 at both ends thereof, across the case 1. is mounted so as to protrude outwardly, and a swinging rod 15 extending downwardly within the mission case 1 is integrally extended from the lift shaft 13, and the swinging rod 15 is attached to the piston 11 and the piston rod 12. Interlocking and connecting via
In addition, the rear cover 3 also serves as a swing range regulating member for the swing rod 15 in order to restrict the swing range of the swing rod 15 to the rear side by coming into contact with the rear cover 3 of the transmission case 1. urge
又前記ミッションケース１上に、該ケース１の上面開口
部１ｅを閉鎖する蓋兼操作筺１６を載置固定し、且つ前
記画室Ｃ内上方部で他側方に偏位せる位置（前記シリン
ダ一本体１０の側力位置）に弁本体１７を位置させて該
弁本体１７を前記操作筺１６の下面に固定すると共に、
この操作筺１６に操作レバー１９をもつ操作軸２０を軸
架し、該操作軸２０かも連設された腕杆２１を前記弁本
体１７におけるスプー＃１８に連動連結するのであり、
且つ前記操作筺１６に形成した流入路２２を原動機によ
り駆動される油圧ポンプ（図示せず）に連通連結すると
共に、この操作筐１６に形成した流通路２３を前記隔壁
１ｃに形成した縦方向の連通路２４に連通せしめ、該連
通路２４を前記シリンダ一本体１０のヘッド部に形成さ
れた連通路２５を介して該シリンダ一本体１０内のピス
トン室に連通させるものである。Further, a lid/operation housing 16 for closing the upper opening 1e of the case 1 is placed and fixed on the mission case 1, and is placed at a position where it is deviated to the other side in the upper part of the compartment C (the cylinder Positioning the valve body 17 in the side force position of the body 10 and fixing the valve body 17 to the lower surface of the operation housing 16,
An operating shaft 20 having an operating lever 19 is mounted on this operating housing 16, and an arm rod 21 connected to the operating shaft 20 is interlocked and connected to the spout #18 in the valve body 17.
In addition, an inflow passage 22 formed in the operation housing 16 is connected to a hydraulic pump (not shown) driven by a prime mover, and a flow passage 23 formed in the operation housing 16 is connected to a vertical passage formed in the partition wall 1c. The communication passage 24 is communicated with the piston chamber in the cylinder body 10 via a communication passage 25 formed in the head portion of the cylinder body 10.
尚図示されてはいないが前記ミッションケース１内に開
口するドレン通路が前記操作筺１６又は弁本体１７に形
成されており、且つ前記スプール１８の切換えによって
このドレン通路と前記流入路２２と前記流通路２３との
連通及びその遮断を制御すべく構成している。Although not shown, a drain passage that opens into the mission case 1 is formed in the operation housing 16 or the valve body 17, and by switching the spool 18, this drain passage, the inflow passage 22, and the circulation are connected. It is configured to control communication with the path 23 and its interruption.
本考案装置は以上の如く構成されるもので、例えば操作
レバー１９が直立する中立位置にある場合、流入路２２
がドレン通路に開口し流通路２３が閉鎖させており、シ
リンダ一本体１０内のピストン室内圧油が閉込められピ
ストン１１の移動をロックしてリフトアーム１４を任意
の位置で係止維持しているのであり、又操作レバー１９
を前方側に倒すべく操作した場合、弁本体１７における
スプール１８が切換えられて前記流通路２３をドレン通
路に連通し、前記ピストン室内の圧油を連通路２４．２
５から流通路２３を介してミッションケース１内に排出
可能ならしめ、これによって前記ピストン１１が進出（
往動）し前記リフトアーム１４を下動させるのであり、
又前記操作レバー１９を後方側に倒すべく操作した場合
、前記流通路２３が流入路２２に連通し前記ピストン室
内に圧油を連通路２４．２５を介して供給し、これによ
って前記ピストン１１が後退（復動）し前記リフトアー
ム１４を上動させるのであり、且つこのピストン１１が
復動端若しくはリフトアーム１４が上動限昇に至った時
リフト軸１３かも連出した揺動杆１５が後部カバー３の
内壁面に当接し、それ以上のピストン１１若しくはリフ
トアーム１４の移動が規制されるのである。The device of the present invention is constructed as described above. For example, when the operating lever 19 is in the upright neutral position, the inflow path 22
is opened to the drain passage and the flow passage 23 is closed, and the pressure oil in the piston chamber in the cylinder body 10 is trapped, locking the movement of the piston 11 and maintaining the lift arm 14 at an arbitrary position. There is also a control lever 19.
When the valve body 17 is operated to tilt forward, the spool 18 in the valve body 17 is switched to communicate the flow passage 23 with the drain passage, and the pressure oil in the piston chamber is transferred to the communication passage 24.2.
5 into the transmission case 1 through the flow path 23, thereby allowing the piston 11 to advance (
(forward movement) and moves the lift arm 14 downward,
Further, when the operating lever 19 is operated to tilt backward, the flow passage 23 communicates with the inflow passage 22 and supplies pressurized oil into the piston chamber via the communication passage 24.25, thereby causing the piston 11 to move forward. When the piston 11 reaches the backward movement end or the lift arm 14 reaches its upper limit, the swinging rod 15, which is also connected to the lift shaft 13, It comes into contact with the inner wall surface of the rear cover 3, and further movement of the piston 11 or lift arm 14 is restricted.
□ツションケース内に位置させたシリンダ一本体のヘッ
ド部を変速装置の各軸を支架する前記ミッションケース
内の隔壁１ｃに取付けたことにより、前記シリンダ一本
体を取付けるための支持壁あるいはシリンダーケースと
かを特別に形成する必要なく、極めて合理的に支持でき
るのであり、しかも、前記隔壁１ｃは、変速装置の各軸
を支架する必要上、強固に形成されるものであるから、
前記シリンダーケースのヘッド部は前記隔壁１ｃに確実
強固に支持できるのである。□ By attaching the head portion of the cylinder body located in the transmission case to the bulkhead 1c in the transmission case that supports each shaft of the transmission, a support wall or cylinder case for mounting the cylinder body is formed. The partition wall 1c can be supported very rationally without the need for special formation, and the partition wall 1c is strongly formed to support each shaft of the transmission.
The head portion of the cylinder case can be reliably and firmly supported by the partition wall 1c.
更に、前記□ツションケース１の上面より前記隔壁１ｃ
に連通路２４を穿設して該連通路２４の一端を前記ヘッ
ド部に形成した連通路２５に連通せしめるように構成し
たことにより、前記ミッションケース内に複雑なパイピ
ングを行なうことなく、前記ミッションケース内の空間
を有効にオｕ用できるのであり、また、前記隔壁１ｃは
前記変速装置の各軸を支架し得るだけの強度を得るため
に肉厚を大きく設計してお９、前記連通路２４．２５を
穿設するのは容易であるから、複雑なパイピングを行な
う場合に比べて、加工を容易に行なえるのであり、しか
も、前記連通路２４．２５は腐蝕及び外部からの衝撃に
対して極めて強いのである。Furthermore, from the upper surface of the □ tension case 1, the partition wall 1c is
By forming a communication passage 24 in the transmission case and making one end of the communication passage 24 communicate with the communication passage 25 formed in the head portion, the transmission can be connected to the transmission case without the need for complicated piping inside the transmission case. The space inside the case can be used effectively, and the partition wall 1c is designed to have a large wall thickness in order to have enough strength to support each shaft of the transmission. Since it is easy to drill holes 24 and 25, it is easier to process than complicated piping, and the communication passages 24 and 25 are resistant to corrosion and external impact. It is extremely strong.
その上、スプールをもつ弁本体と前記スプールを操作機
構を配した操作筺とを、前記連通路２４を形成した前記
ミッションケースの上面部分に配置して前記連通路２４
の他端を前記弁本体の流通路２３に連通ずる如く構成し
たのであるから、前記弁本体及び前記操作筺の内部を保
守９点検する必要が生じた場合に前記弁本体及び前記操
作筐の分解、組立を行なうのであるが、前記弁本体及び
操作筐は前記ミッションケースの上面部分に配置されて
いるからその分解、組立は極めて容易に行ない得て、保
守９点検等を楽にするのである。Furthermore, a valve main body having a spool and an operation case in which a mechanism for operating the spool is disposed are disposed on the upper surface portion of the mission case forming the communication passage 24.
Since the other end is constructed so as to communicate with the flow path 23 of the valve body, when it becomes necessary to perform maintenance and inspection on the inside of the valve body and the operation housing, the valve body and the operation housing can be disassembled. Since the valve body and the operation case are located on the upper surface of the transmission case, disassembly and assembly are extremely easy, which makes maintenance and inspection easier.
図面は本考案実施の態様を例示し、第１図はその要部の
従断面図、第２図は同平面図、第３図は一部を切欠せず
同背面図である。
１・・・・・・ミッションケース、１ｃ・・・・・・隔
壁（ミッションケース壁）１０・・・・・・シリンタ一
本体、１１・・・・・・ピストン、１３・・・・・・リ
フト軸、１４・・・・・・リフトアーム、１５・・・・
・・揺動杆、２４・・・・・・連通路、１０ａ・・・・
・・ヘッド部、１６・・・・・・操作筺、１７・・・・
・・弁本体、１８・・・・・・スプール、２２・・・・
・・流入路、２３・・・・・・流通路、２５・・・・・
・連通路。The drawings illustrate an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the main parts thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a rear view thereof with some parts not cut away. 1... Mission case, 1c... Bulkhead (mission case wall) 10... Cylinder body, 11... Piston, 13... Lift axis, 14... Lift arm, 15...
... Swinging rod, 24... Communication path, 10a...
...Head section, 16...Operation box, 17...
... Valve body, 18 ... Spool, 22 ...
...Inflow channel, 23... Distribution channel, 25...
・Communication path.
Claims (1)
１４をもつ１．；フト軸１３を軸承させ、該１．１フト
軸１３からミッションケース１内下刃に延びる揺動杆１
５を一体的に連設する一方、前記ミッションケース１内
に位置させたシリンダ一本体１０のヘッド部１０ ａを
前記□ツションケース１内の隔壁１ｃに取付けると共に
、前記ミッションケース１の上面より前記隔壁１ｃに連
通路２４を穿設して、該連通路２４の一端を前記ヘッド
部１０ａに形成した連通路２５に連通せしめ、かつスプ
ール１８をもつ弁本体１７と前記スプール１８を操作す
る操作機構を配した操作筺１６とを、前記連通路２４を
形成した前記ミッションケース１の上面部分に配置して
前記連通路２４の他端を前記弁本体１７の流通路２３に
連通し、該弁本体１７の流入路２２を油圧ポンプに連通
させたことを特徴とする油圧昇降装置を備えたトラクタ
ー。1. Having a lift arm 14 in a transmission case 1 in a tractor. ; A swinging rod 1 bearing a foot shaft 13 and extending from the foot shaft 13 to the inner lower blade of the transmission case 1;
At the same time, the head part 10a of the cylinder main body 10 located in the mission case 1 is attached to the partition wall 1c in the transmission case 1, and An operation of drilling a communication passage 24 in the partition wall 1c, making one end of the communication passage 24 communicate with a communication passage 25 formed in the head portion 10a, and operating the valve body 17 having the spool 18 and the spool 18. An operation housing 16 equipped with a mechanism is disposed on the upper surface of the transmission case 1 in which the communication passage 24 is formed, and the other end of the communication passage 24 is communicated with the flow passage 23 of the valve body 17. A tractor equipped with a hydraulic lifting device characterized in that an inlet passage 22 of a main body 17 is communicated with a hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975172284U JPS5926807Y2 (en) | 1975-12-20 | 1975-12-20 | Tractor with hydraulic lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975172284U JPS5926807Y2 (en) | 1975-12-20 | 1975-12-20 | Tractor with hydraulic lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5283913U JPS5283913U (en) | 1977-06-22 |
| JPS5926807Y2 true JPS5926807Y2 (en) | 1984-08-03 |
Family
ID=28650727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1975172284U Expired JPS5926807Y2 (en) | 1975-12-20 | 1975-12-20 | Tractor with hydraulic lifting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926807Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187703A (en) * | 1985-02-14 | 1986-08-21 | 本田技研工業株式会社 | Hydraulic apparatus in vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2971589A (en) * | 1957-03-01 | 1961-02-14 | Deere & Co | Hitch device |
| US3002571A (en) * | 1957-06-21 | 1961-10-03 | Ford Motor Co | Hydraulic system for tractors |
-
1975
- 1975-12-20 JP JP1975172284U patent/JPS5926807Y2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2971589A (en) * | 1957-03-01 | 1961-02-14 | Deere & Co | Hitch device |
| US3002571A (en) * | 1957-06-21 | 1961-10-03 | Ford Motor Co | Hydraulic system for tractors |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5283913U (en) | 1977-06-22 |
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