JP3388953B2 - Safe running operation device for mobile agricultural machines - Google Patents
Safe running operation device for mobile agricultural machinesInfo
- Publication number
- JP3388953B2 JP3388953B2 JP21242895A JP21242895A JP3388953B2 JP 3388953 B2 JP3388953 B2 JP 3388953B2 JP 21242895 A JP21242895 A JP 21242895A JP 21242895 A JP21242895 A JP 21242895A JP 3388953 B2 JP3388953 B2 JP 3388953B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- speed
- main
- shift lever
- stopper
- 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 - Fee Related
Links
Landscapes
- Transplanting Machines (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、主変速と副変速を
安全走行ができるよう操作可能にした移動農機の安全走
行操作装置に関する。
【０００２】
【従来の技術】従来は、主変速を移動速に操作すること
ができる主変速レバーと、副変速操作ができる副変速レ
バーにより走行変速ができる移動農機において、例えば
本出願人が既に出願した特願平７−１４５３１４号に見
られるように、前記主変速レバーと副変速レバーはそれ
ぞれ自由に操作できるようになっていた。
【０００３】
【発明が解決しようとする課題】しかしながら、副変速
レバーを副変速の最高速の位置に入れるとともに主変速
レバーを移動速の位置に入れると、機体は最高速度で走
行できることになって、速度を出し過ぎた場合には、機
体が転倒したり、他のものに衝突する事故が発生しやす
くて危険である、といった不具合を呈していた。
【０００４】
【課題を解決するための手段】本発明は、そのような不
具合を解決し、所定の安全な速度以上では走行できない
よう有効に操作可能とするものであり、そのため、主変
速を移動速に操作することができる主変速レバーと、副
変速操作ができる副変速レバーにより走行変速ができる
移動農機において、前記主変速レバーおよび副変速レバ
ーには一体となって回動できるカムをそれぞれ設け、前
記主変速レバーが移動速の位置に入れられると前記副変
速レバーを最低速より早い速度に操作できないよう、前
記主変速レバーの動きに連動するストッパーを前記副変
速レバーのカムに係合可能に設けるとともに、前記副変
速レバーが最低速の位置を除く位置に入れられると前記
主変速レバーを移動速の位置に操作できないよう、前記
副変速レバーの動きに連動するストッパーを前記主変速
レバーのカムに係合可能に設けて構成したものである。
【０００５】
【作用】したがって、主変速レバーが移動速の位置に入
れられると、その動きに連動するストッパーが副変速レ
バーのカムに係合することになって、副変速レバーを最
低速より早い速度に操作できないことになり、また、副
変速レバーが最低速の位置を除く位置に入れられると、
その動きに連動するストッパーが主変速レバーのカムに
係合することになって、主変速レバーを移動速の位置に
操作できないことになり、副変速レバーが最低速の位置
で、主変速レバーが移動速の位置となる所定の最低速度
で移動農機を安全に走行させることができることにな
る。
【０００６】
【発明の実施の形態】図１は移動農機である乗用田植機
を示した側面図であり、本機Ａは、両前輪７、両後輪
８、ハンドル９、シート１０等を装備し、該本機Ａの後
方にリンク機構１１を介して連結する植付部Ｂは、苗載
台１２、複数のロータリ式植付爪１３、複数のフロート
１４等を装備し、本機Ａの油圧シリンダ１５により植付
部Ｂを昇降自在にして従来形構造同様に構成したもので
ある。
【０００７】前記シート１０の左側となるリヤカバー１
６の上面には、操作軸１７ａ中心に回動させることがで
きる主変速レバー１を嵌挿した主変速ガイド構１８を配
備するが、該主変速ガイド構１８には、図３および図５
に示すように、前部に主変速の中立Ｎ位置と移動速Ｓの
位置を、また後部に苗継ぎＰの位置と中立Ｎの位置と後
進Ｒの位置をそれぞれ設定し、主変速レバー１をそれぞ
れの位置に移動させて操作できるよう従来形同様に構成
する。
【０００８】また、前記シート１０の右側となるリヤカ
バー１６の上面には、操作軸１７ｂ中心に回動させるこ
とができる植付作業レバーでもある副変速レバー２を嵌
挿した副変速ガイド構１９を配備するが、該副変速ガイ
ド構１９には、図３および図６に示すように、前部に副
変速の最低速Ｓ1 の位置と最高速Ｓ2 の位置を、中間部
に植付クラッチの入と切の位置を、後部に前記植付部Ｂ
昇降の下げと上げの位置を、それぞれ設定し、副変速レ
バー２をそれぞれの位置に移動させて操作できるように
従来形同様に構成する。
【０００９】前記主変速レバー１および副変速レバー２
の近傍となる前記操作軸１７ａおよび１７ｂの部位には
扇状のカム３および４のボス２０および２１をそれぞれ
嵌合して固定するが、両カム３，４の外周円弧には高段
面３ａ，４ａとその先端より低くなる低段面３ｂ，４ｂ
をそれぞれ形設する。
【００１０】また、前記両カム３，４の上方に両端がの
ぞむ１本の支軸２２を機枠２３ａ，２３ｂに回動自由に
して横架し、支軸２２の一端部に嵌合固定したボス２４
より重設するアーム２５の下端部には、前記カム３の外
周円弧に当接できるピン製ストッパー６の端部を固設
し、前記アーム２５の前方および後方には、該アーム２
５の回動を規制することができるストッパー２６ａ，２
６ｂを機枠２３ａに架設し、前記支軸２２の他端部に嵌
合固定したボス２７より重設するくの字状アーム２８の
下端部には、前記カム４の外周円弧に当接できるピン製
ストッパー５の端部を固設し、ボス２７の上方に延出す
るアーム２９の先端には、ストッパー５を後方側へ弾圧
付勢する引張りばね３０を連繋して構成する。
【００１１】したがって、路上走行の際に、図５に示す
ように、主変速レバー１が矢印イ方向に回動させられて
移動速Ｓの位置に入れられると、主変速レバー１により
矢印イ方向に回動させられるカム３の高段面３ａにスト
ッパー６が乗り上げて、アーム２５は矢印ロ方向に回動
させられることになり、そのアーム２５とともに回動す
る支軸２２は他方のアーム２８を同時に矢印ロ方向へ図
６に示すように回動させることになって、ストッパー５
はカム４の低段面４ｂに接触する状態となり、副変速レ
バー２を最低速Ｓ1 の位置より最高速Ｓ2 の位置へ矢印
ハで示すように操作しようとしても、図６に示すよう
に、カム４の高段面４ａ前部の段部がストッパー５に衝
合するとともに、前記アーム２５がストッパー２６ａに
衝合しているのでストッパー５がロックされることにな
って、副変速レバー２を操作できないことになる。
【００１２】また、副変速レバー２が最低速Ｓ1 の位置
を除く位置に、図７に示すように、例えば最高速Ｓ2 の
位置に入れられていると、副変速レバー２により矢印ニ
方向に回動させられるカム４の高段面４ａにストッパー
５が乗り上げてアーム２８は矢印ホ方向に回動させられ
ることになり、そのアーム２８とともに回動する支軸２
２は他方のアーム２５を同時に矢印ホ方向へ図８に示す
ように回動させることになって、ストッパー６はカム３
の低段面３ｂに接触する状態となり、図８に示すよう
に、主変速レバー１を移動速Ｓの位置へ矢印イ方向に操
作しようとしても、カム３の高段面３ａ前部の段部がス
トッパー６に衝合するとともに、他方のストッパー５が
カム４の高段面４ａに押し付けられる状態となってスト
ッパー６により阻止されることになり、主変速レバー１
を移動速Ｓの位置に操作できないことになる。
【００１３】なお、前記実施形態のほか、前記カム３，
４の円弧外周側にマイクロスイッチをそれぞれ配備し、
両マイクロスイッチのオン・オフ作動により両ソレノイ
ドからストッパー６、５をそれぞれ出退させながら両カ
ム３，４にそれぞれ係合可能として、前記実施形態と同
様に操作できるよう構成することもできる。
【００１４】
【発明の効果】このように本発明は、主変速レバー１が
移動速Ｓの位置に入れられると、その動きに連動するス
トッパー５が副変速レバー２のカム４に係合することに
なって、副変速レバー２を最低速Ｓ1 より早い速度に操
作できないことになり、また、副変速レバー２が最低速
Ｓ1 の位置を除く位置に入れられると、その動きに速動
するストッパー６が主変速レバー１のカム３に係合する
ことになって、主変速レバー１を移動速Ｓの位置に操作
できないことになり、副変速レバー２が最低速Ｓ1 の位
置で、主変速レバー１が移動速Ｓの位置となる所定の最
低速度で移動農機を走行させることができることになっ
て、安全運転ができる移動農機にして好適に実施できる
特長を有する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safe traveling operation device for a mobile agricultural machine that can operate a main transmission and a subtransmission so that the vehicle can travel safely. 2. Description of the Related Art Conventionally, in a mobile agricultural machine in which traveling speed can be shifted by a main shift lever capable of operating a main shift to a moving speed and a sub shift lever capable of operating a sub shift, for example, As seen in Japanese Patent Application No. 7-145314, the main shift lever and the sub shift lever can be freely operated. [0003] However, if the sub-shift lever is set to the highest speed position of the sub-shift and the main shift lever is set to the moving speed position, the aircraft can run at the maximum speed. However, if the speed is too high, there is a problem in that the aircraft is likely to fall over or collide with another object, which is dangerous and dangerous. SUMMARY OF THE INVENTION The present invention solves such a problem and enables the vehicle to be operated effectively so that the vehicle cannot run at a speed higher than a predetermined safe speed. The main shift lever and the auxiliary shift lever are provided with cams that can rotate integrally with each other in a mobile agricultural machine that can perform a traveling shift by a main shift lever that can be operated at a high speed and a sub shift lever that can perform an auxiliary shift operation. When the main transmission lever is moved to the moving speed position, a stopper interlocked with the movement of the main transmission lever can be engaged with the cam of the sub transmission lever so that the sub transmission lever cannot be operated at a speed higher than the minimum speed. And when the sub-shift lever is moved to a position other than the lowest speed position, the sub-shift device is operated so that the main shift lever cannot be operated to the moving speed position. A stopper interlocked with the movement of the speed lever is provided so as to be engageable with the cam of the main shift lever. Accordingly, when the main shift lever is moved to the position of the moving speed, the stopper interlocked with the movement engages with the cam of the auxiliary shift lever, and the auxiliary shift lever is moved faster than the minimum speed. If you can not operate to the speed, and if the sub-shift lever is moved to a position other than the lowest speed position,
The stopper linked to the movement engages the cam of the main shift lever, so that the main shift lever cannot be operated to the moving speed position, and the sub shift lever is at the lowest speed position, and the main shift lever is The mobile agricultural machine can be safely driven at a predetermined minimum speed at the position of the moving speed. FIG. 1 is a side view showing a riding rice transplanter which is a mobile agricultural machine. The machine A is equipped with both front wheels 7, both rear wheels 8, a handle 9, a seat 10, and the like. The planting portion B connected to the rear of the machine A via a link mechanism 11 is equipped with a seedling mounting table 12, a plurality of rotary planting claws 13, a plurality of floats 14, and the like. The planting portion B is configured to be movable up and down by a hydraulic cylinder 15 in the same manner as the conventional structure. The rear cover 1 on the left side of the seat 10
6 is provided with a main transmission guide structure 18 in which the main transmission lever 1 that can be turned around the operation shaft 17a is inserted.
As shown in the figure, the neutral position of the main transmission and the position of the moving speed S are set at the front, and the position of the seedling connection P, the position of the neutral N and the position of the reverse R are set at the rear, respectively. It is configured in the same manner as the conventional type so that it can be moved to each position and operated. On the upper surface of the rear cover 16 on the right side of the seat 10, there is provided a sub-transmission guide structure 19 into which the sub-transmission lever 2 which is a planting work lever which can be turned around the operation shaft 17b is inserted. Although deployment, the sub speed change guide structure 19, as shown in FIGS. 3 and 6, the minimum speed position and the position of the highest speed S 2 of S 1 of the subtransmission the front, planting the intermediate section clutch Inserting and cutting position of the planting part B at the rear
The lowering and raising positions of the lifting and lowering are set, respectively, and the auxiliary transmission lever 2 is moved to the respective position to be operated in the same manner as the conventional type. The main shift lever 1 and the sub shift lever 2
The bosses 20 and 21 of the fan-shaped cams 3 and 4 are respectively fitted and fixed to the portions of the operation shafts 17a and 17b in the vicinity of the camshafts 17a and 17b. 4a and low step surfaces 3b, 4b lower than the tip thereof
Are respectively formed. Also, one support shaft 22 whose both ends are viewed above the cams 3 and 4 is mounted on the machine frames 23a and 23b so as to be freely rotatable and horizontally mounted, and is fitted and fixed to one end of the support shaft 22. Boss 24
An end of a pin stopper 6 that can abut on the outer circumferential arc of the cam 3 is fixedly provided at the lower end of the arm 25 that is further overlapped.
Stoppers 26a, 26 capable of restricting the rotation of 5
6b is mounted on the machine frame 23a, and the lower end of the V-shaped arm 28 which is overlapped with the boss 27 fitted and fixed to the other end of the support shaft 22 can abut on the outer circumferential arc of the cam 4. An end of the pin stopper 5 is fixedly provided, and a tension spring 30 for urging the stopper 5 rearward is connected to a tip of an arm 29 extending above the boss 27. Accordingly, when the vehicle is traveling on a road, as shown in FIG. 5, when the main speed change lever 1 is rotated in the direction of arrow A and is brought into the position of the moving speed S, the main speed change lever 1 is moved in the direction of arrow A. The stopper 6 rides on the high step surface 3a of the cam 3 which is rotated in the vertical direction, and the arm 25 is rotated in the direction of arrow B. The support shaft 22 which rotates together with the arm 25 moves the other arm 28 At the same time, the stopper 5 is rotated in the direction of arrow B as shown in FIG.
Is a state in contact with the low-stage surface 4b of the cam 4, also the sub shift lever 2 in an attempt to operate as shown by the arrow c from the position of the most low-speed S 1 to the position of the maximum speed S 2, as shown in FIG. 6 Since the step portion at the front of the high step surface 4a of the cam 4 abuts against the stopper 5, and the arm 25 abuts against the stopper 26a, the stopper 5 is locked. Cannot be operated. When the sub-transmission lever 2 is set at a position other than the position of the lowest speed S 1 , for example, at the position of the highest speed S 2 , as shown in FIG. When the stopper 5 rides on the high step surface 4a of the cam 4 which is rotated in the direction of the arrow, the arm 28 is rotated in the direction of arrow E, and the support shaft 2 which rotates with the arm 28
2, the other arm 25 is simultaneously rotated in the direction of arrow E as shown in FIG.
As shown in FIG. 8, even if the main shift lever 1 is moved to the position of the moving speed S in the direction of the arrow A, the stepped portion in front of the high stepped surface 3a of the cam 3 as shown in FIG. Abuts against the stopper 6, and the other stopper 5 is pressed against the high step surface 4 a of the cam 4 and is stopped by the stopper 6.
Cannot be operated at the position of the moving speed S. Incidentally, in addition to the above-described embodiment, the cams 3,
Microswitches are arranged on the outer circumference of the arc 4 respectively,
By turning on and off the two micro switches, the stoppers 6 and 5 can be respectively engaged with the two cams 3 and 4 while moving the stoppers 6 and 5 from the two solenoids, so that the operation can be performed in the same manner as in the above embodiment. As described above, according to the present invention, when the main shift lever 1 is moved to the position of the moving speed S, the stopper 5 linked to the movement is engaged with the cam 4 of the auxiliary shift lever 2. turned by the, the sub shift lever 2 will not be able to operate in a faster rate than the lowest speed S 1, also when the auxiliary shift lever 2 is placed in a position excluding the position of the lowest speed S 1, to quick-action to the motion supposed to stop 6 engages with the cam 3 of the main shift lever 1, the main shift lever 1 will not be able to operate on the position of the moving speed S, the sub shift lever 2 is located in the slowest S 1, the main Since the speed change lever 1 can run the moving agricultural machine at a predetermined minimum speed at which the moving speed S is at the position of the moving speed S, there is a feature that the moving agricultural machine can be suitably implemented as a movable agricultural machine capable of safe driving.
【図面の簡単な説明】
【図１】乗用田植機を示した側面図である。
【図２】図１の一部を概略示した平面図である。
【図３】図２の一部を拡大して示した平面図である。
【図４】本発明実施形態の要部を概略示した背面図であ
る。
【図５】図４の一部を概略示した側面図である。
【図６】図４の一部を概略示した側面図である。
【図７】図６の作動状態を示した側面図である。
【図８】図５の作動状態を示した側面図である。
【符号の説明】
１ 主変速レバー
Ｓ 移動速
２ 副変速レバー
Ｓ1 最低速
３，４ カム
５，６ ストッパーBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a riding rice transplanter. FIG. 2 is a plan view schematically showing a part of FIG. 1; FIG. 3 is an enlarged plan view showing a part of FIG. 2; FIG. 4 is a rear view schematically showing a main part of the embodiment of the present invention. FIG. 5 is a side view schematically showing a part of FIG. 4; FIG. 6 is a side view schematically showing a part of FIG. 4; FIG. 7 is a side view showing the operation state of FIG. 6; FIG. 8 is a side view showing the operation state of FIG. 5; [Description of Signs] 1 Main transmission lever S Moving speed 2 Sub transmission lever S 1 Minimum speed 3, 4 Cam 5, 6 Stopper
Claims (1)
る主変速レバー１と、副変速操作ができる副変速レバー
２により走行変速ができる移動農機において、前記主変
速レバー１および副変速レバー２には一体となって回動
できるカム３，４をそれぞれ設け、前記主変速レバー１
が移動速Ｓの位置に入れられると前記副変速レバー２を
最低速Ｓ1 より早い速度に操作できないよう、前記主変
速レバー１の動きに連動するストッパー５を前記副変速
レバー２のカム４に係合可能に設けるとともに、前記副
変速レバー２が最低速Ｓ1 の位置を除く位置に入れられ
ると前記主変速レバー１を移動速Ｓの位置に操作できな
いよう、前記副変速レバー２の動きに連動するストッパ
ー６を前記主変速レバー１のカム３に係合可能に設けて
構成したことを特徴とする安全走行操作装置。(57) [Claim 1] In a mobile agricultural machine in which a traveling shift can be performed by a main shift lever 1 capable of operating a main shift to a moving speed S and an auxiliary shift lever 2 capable of an auxiliary shift operation, The main transmission lever 1 and the sub transmission lever 2 are provided with cams 3 and 4 which can rotate integrally with the main transmission lever 1 and the sub transmission lever 2 respectively.
As but can not be operated when placed in the position of the moving speed S of the auxiliary shift lever 2 in a faster rate than the lowest speed S 1, a stopper 5 that with the movement of the main speed change lever 1 to the cam 4 of the auxiliary shift lever 2 with engageable providing, to the auxiliary shift lever 2 can not operate when placed in a position excluding the position of the minimum speed S 1 the main speed change lever 1 to the position of the moving speed S, the movement of the auxiliary shift lever 2 A safe traveling operation device, wherein an interlocking stopper 6 is provided so as to be engageable with the cam 3 of the main transmission lever 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21242895A JP3388953B2 (en) | 1995-07-28 | 1995-07-28 | Safe running operation device for mobile agricultural machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21242895A JP3388953B2 (en) | 1995-07-28 | 1995-07-28 | Safe running operation device for mobile agricultural machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0937618A JPH0937618A (en) | 1997-02-10 |
| JP3388953B2 true JP3388953B2 (en) | 2003-03-24 |
Family
ID=16622438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21242895A Expired - Fee Related JP3388953B2 (en) | 1995-07-28 | 1995-07-28 | Safe running operation device for mobile agricultural machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3388953B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101023481B1 (en) * | 2009-07-21 | 2011-03-21 | 대동공업주식회사 | Transmission for tractor |
-
1995
- 1995-07-28 JP JP21242895A patent/JP3388953B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0937618A (en) | 1997-02-10 |
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