JP2004248523A - Cut grass discharging apparatus of mower - Google Patents

Cut grass discharging apparatus of mower Download PDF

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Publication number
JP2004248523A
JP2004248523A JP2003039572A JP2003039572A JP2004248523A JP 2004248523 A JP2004248523 A JP 2004248523A JP 2003039572 A JP2003039572 A JP 2003039572A JP 2003039572 A JP2003039572 A JP 2003039572A JP 2004248523 A JP2004248523 A JP 2004248523A
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JP
Japan
Prior art keywords
cut grass
mower
discharge port
rotating blades
discharge
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
JP2003039572A
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Japanese (ja)
Inventor
Norihiro Ide
宣弘 井手
Satoshi Morita
聡 森田
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.)
Atex Co Ltd
Original Assignee
Atex Co Ltd
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 Atex Co Ltd filed Critical Atex Co Ltd
Priority to JP2003039572A priority Critical patent/JP2004248523A/en
Publication of JP2004248523A publication Critical patent/JP2004248523A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut grass discharging apparatus of a mower improving many maloperations and complicated operations in a form separately carrying out the changeover of the rotative direction of rotating blades or the changeover of the discharge direction of cut grass though there are many forms synchronizing the discharge direction of the cut grass with the rotative direction of the rotating blades and the discharge direction of the cut grass is frequently changed according to the form, etc., of mowing work sits in a mower deck equipped with the plurality of rotating blades on the left and the right sides. <P>SOLUTION: The constitution of the cut grass discharging apparatus of the mower is as follows. A middle discharge port 4 in the central part on the rear side, a left discharge port 5 and a right discharge port 6 openable and closable at both left and right ends are arranged in the mower deck 3 axially mounting the plurality of rotating blades 1 and 2 changing over the rotative direction. The changeover of the rotative direction of the rotating blades 1 and 2 is interlocked with the changeover of the left and right discharge ports 5 and 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、モーアの刈草放出装置に関し、乗用トラクタやハンドトラクタ等に装着されるモーアに利用できる。
【0002】
【従来の技術】
モーアデッキの回転刃の回転方向を切替える技術(例えば特許文献1参照)や、中排出口や左右排出口を開閉する技術(例えば、特許文献1,2参照)が知られている。
【特許文献1】実開昭60−133739号公報(第7頁、第3図)
【特許文献2】実開昭61−28332号公報(第6〜7頁、第1図)
【0003】
【発明が解決しようとする課題】
複数の回転刃を左右に配置するモーアデッキでは、刈草の放出方向に回転刃の回転方向を同調させる形態とすることが多い。又、草刈作業場の形態等によって刈草放出方向を変更することが多い。これら回転刃の回転方向切替えや、刈草放出方向の切替えを各別に行う形態では、誤操作も多く、操作煩雑である。
【0004】
【課題を解決するための手段】
請求項1に記載の発明は、回転方向を切替可能の複数の回転刃1,2を軸装するモーアデッキ3に、後側中央部の中排出口4と、左右両側部で開閉可能の左排出口5と右排出口6とを配置し、これら回転刃1,2の回転方向の切替えと、左、右排出口5,6との切替えを連動することを特徴とするモーアの刈草放出装置の構成とする。モーアデッキ3の中排出口4から刈草を排出させるときは、左右の回転刃1,2を中央後側へ向かうように回転することによって、モーアデッキ3内の刈草が同方向へ回転集送されると共に、この中排出口4から後方へ放出される。又、左排出口5から排出させるときは、左右の回転刃1,2を左側回りに回転することによって、左排出口5が開かれて、刈草が左側へ集送されて左排出口5から放出される。更には、右排出口6から排出させるときは、回転刃1,2を右側回りに回転することによって、右排出口6が開かれて排出される。
【0005】
【発明の効果】
請求項1に記載の発明は、モーアデッキ3の各回転刃1,2の回転方向、又は、左、右排出口5,6等の切替えによって、これと連動の左、右排出口5,6、又は、回転刃1,2の回転方向が切替えられて、回転刃1,2の回転方向による刈草集送方向側の排出口4,5,6が同期開口されて、刈草を放出させることができ、操作を簡単、迅速、的確にして、誤操作を少なくし、作業能率を向上できる。
【0006】
【発明の実施の形態】
この発明の一実施例を図面に基づいて説明する。草刈機は、ハンドル7を有したハンド形態のトラクタ車体8の前側に、モーアデッキ3を装着したものである。車体8は機体の前進方向Fに対して左右一対のクローラ9を有し、上側にエンジン10を搭載して、このエンジン10によって伝動機構を介してクローラ9及びモーアデッキ3内の回転刃1,2を回転伝動する。車体8前部の連結ブラケット11には上下一対の平行状の連結リンク12が、上下回動自在に連結され、この連結リンク12の前端にモーアデッキ3上部の伝動ケース13部が連結され、これらブラケット11上の連結リンク12の連結部の出力軸14と、伝動ケース13部の入力軸15との間に、ベルト16を掛け渡して、エンジン10側から回転刃1,2側へ伝動する構成としている。
【0007】
モーアデッキ3は、内部に左右一対の回転刃1,2を軸17,18装する。この回転刃は、広幅刈刃形態では刈刃を左右三連、又は四連の如く多連形態に配設することもできる。各回転刃1,2は軸17,18に各々二段にブレードを配置する形態としている。モーアデッキ3の上側に伝動ケース13が設けられて、この伝動ケース13に横方向の入力軸15が軸装され、この入力軸15からクラッチギヤ19,20を有するベベルギヤ21を介して各軸17,18が伝動回転される。入力軸15の中央部に位置するシフタピン23が、伝動ケース13上の支持ピン22回りに回動の切替レバー24によって、左右へ移動されることにより、入力軸15が左右へ移動されて、この入力軸15の左右二箇所に形成のスプライン軸部25,25を、図1に示すように右側のクラッチギヤ20と左側のクラッチギヤ19のセレーション部に嵌合噛合させたり、図3に示すように左側のクラッチギヤ19,19のセレーション部に嵌合噛合させたり、又、図4に示すように右側のクラッチギヤ20,20のセレーション部に嵌合噛合させるように切替えることができ、各回転刃1,2の回転方向を切替えできる伝動構成である。
【0008】
前記刈草の放出方向を切替える各排出口4,5,6の切替え形態は、中排出口4は常時開放する形態として、左右の排出口5,6を開閉できる構成としている。もちろんこの中排出口4にもシャッタを設けて開閉できる構成とすることもできる。左、右排出口5,6には、ワイヤ26の連動操作で、閉スプリング27、及び開スプリング28を介して開閉回動されるシャッター29,30が設けられる。このシャッター29,30は、モーアデッキ3上のブラケット31に設けた開閉軸32によって回動自在に設けられる。ワイヤー26を引くことによって、閉スプリング27を介してかつ開スプリング28に抗して、シャッター29,30を開閉軸32の周りに閉回動Aさせて、排出口5,6を閉じる(図5)。又、逆にワイヤー26を緩めることによって、開スプリング28によってシャッター29,30を外側上部へ開回動Bさせて、排出口5,6を開く(図6)ように構成している。
【0009】
このような左、右シャッター29,30を開閉操作するためのワイヤー26を、各刈草放出方向と対応する側への回転刃1,2の回転方向を得るように前記切替レバー24に連結する。即ち、刈草を中排出口4から後方へ放出させるときは、切替レバー24を中央部Nに操作する(図1)ことによって、左回転刃1が右回りCで、右回転刃2が左回りDの方向へ向けて中央後部へ向かうように回転される。この切替レバー24のシフタピン23によって入力軸15が左右中央部に位置されて、左スプライン軸部25が内側のクラッチギヤ20部に噛合し、右スプライン軸部25も内側のクラッチギヤ19部に噛合して、この入力軸15の回転による左、右回転刃1,2は中央後部へ向けた相反対方向C,Dへ回転伝動される。しかも、この切替レバー24は左、右両側のワイヤー26を引っ張る状態にあって、左、右シャッター29,30を共に閉鎖して、左、右排出口5,6を閉じる。
又、左排出口5から外側へ放出させるときは、切替レバー24を左側Lへ操作する(図3)ことによって、左、右の回転刃1,2が同じ左回りDに回転伝動されると共に、左排出口5のシャッター29が開かれる。この切替レバー24のシフタピン23によって入力軸15が左側へ移動されると、左右のスプライン軸25共に左側のクラッチギヤ19に噛合して、左、右回転刃1,2が同じ左回りDに回転伝動される。しかも、これによって右側のワイヤー26は開スプリング28に抗して引っ張られて右シャッター30を閉鎖したままであるが、左側のワイヤー26を緩めて、左シャッター29を開回動させて、左排出口5を開く。
【0010】
又、右排出口6から放出させるときは、切替レバー24を右側Rへ操作する(図4)ことによって、該左側放出の場合と略同様にして回転刃1,2伝動の切替えや、シャッター29,30の切替えが行われる。ここに、スプライン軸部25は、左右共に右側のクラッチギヤ20部に噛合されて、左右回転刃1,2を同じ右回りCへ回転伝動する。又、左側のワイヤー26は引っ張った状態で、左シャッター29を閉じて、右側のワイヤー26の緩みで右シャッター30を開いて、右排出口6を開放することができる。
このようなモーアデッキ3の中排出口4の後部は左右のクローラ9間の間隔部33にのぞまされて、放出された刈草をこの間隔部33を通して後方へ排出案内させる。又、この車体8底部の間隔部33には門形状断面の案内板34が設けられる。又、左、右排出口5,6から刈草を放出させるときは、左、右クローラ9の外側に沿って排出される。35はゲージホイルで、モーアデッキ3を対地支持するものである。
前記入力軸15を伝動ケース13に対して左右に移動可能の構成としているため、前記定位置の各クラッチギヤ19,20や、ベルト16の掛け渡される入力プーリ36等に対して摺動自在で、クラッチギヤ19,20の入り位置では一体回転するように構成される。
又、前記中排出口4に中シャッターを設ける場合は、切替レバー24を中央部Nに操作することによって、この中シャッターを開き、左側L、又は右側Rに操作することによって閉じるように連動構成することができる。
又、これら回転刃1,2の回転方向の切替えと、刈草放出方向の切替えとの連動構成は、前記のような切替レバー24やワイヤー26等の他に、リンク機構等の機械的連動機構や、更には電磁機構等によって連動構成することもできる。又、この連動操作を操縦ハンドル7近くに設置の遠隔操作具によって切替操作できるように構成して、操作性を高めることもできる。
【図面の簡単な説明】
【図1】モーアデッキ部の平面図。
【図2】モーアデッキ部の正面図。
【図3】その作用状態を示す平面図。
【図4】その作用状態を示す平面図。
【図5】そのシャッター部の作動状態を示す正面図。
【図6】そのシャッター部の作動状態を示す正面図。
【図7】草刈機全体の側面図。
【図8】その一部の平面図。
【符号の説明】
1 回転刃
2 回転刃
3 モーアデッキ
4 中排出口
5 左排出口
6 右排出口
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mower-cutting-grass discharging device, and can be used for a mower mounted on a riding tractor, a hand tractor, or the like.
[0002]
[Prior art]
A technique for switching the rotation direction of a rotary blade of a mower deck (for example, see Patent Document 1) and a technique for opening and closing a middle discharge port and left and right discharge ports (for example, see Patent Documents 1 and 2) are known.
[Patent Document 1] Japanese Utility Model Application Laid-Open No. 60-133439 (page 7, FIG. 3)
[Patent Document 2] Japanese Utility Model Publication No. Sho 61-28332 (Pages 6 and 7, FIG. 1)
[0003]
[Problems to be solved by the invention]
In a mower deck in which a plurality of rotary blades are arranged on the left and right, the rotation direction of the rotary blades is often synchronized with the discharge direction of the cut grass. In addition, the direction of releasing the cut grass is often changed depending on the form of the mowing work place. In a mode in which the switching of the rotation direction of the rotary blade and the switching of the cutting grass discharge direction are performed separately, there are many erroneous operations, and the operation is complicated.
[0004]
[Means for Solving the Problems]
According to the first aspect of the present invention, a mower deck 3 on which a plurality of rotary blades 1 and 2 whose rotation directions can be switched is axially mounted is provided with a middle discharge port 4 at a rear central portion and a left discharge opening and closing left and right sides. An outlet 5 and a right outlet 6 are arranged, and the switching of the rotation direction of the rotary blades 1 and 2 and the switching between the left and right outlets 5 and 6 are interlocked with each other. Configuration. When the grass is discharged from the middle discharge port 4 of the mower deck 3, the grass in the mower deck 3 is rotated and fed in the same direction by rotating the left and right rotary blades 1 and 2 toward the center rear side. , Are discharged backward from the discharge port 4. When discharging from the left discharge port 5, the left discharge port 5 is opened by rotating the left and right rotary blades 1 and 2 around the left side, so that the cut grass is collected to the left and the left discharge port 5 Released. Further, when discharging from the right discharge port 6, the right discharge port 6 is opened and discharged by rotating the rotary blades 1 and 2 clockwise.
[0005]
【The invention's effect】
According to the first aspect of the present invention, the rotation direction of each of the rotary blades 1 and 2 of the mower deck 3 or the switching of the left and right discharge ports 5 and 6 and the like is performed by switching the left and right discharge ports 5 and 6. Alternatively, the rotation direction of the rotary blades 1 and 2 is switched, and the discharge ports 4, 5, and 6 on the side of the cutting grass collection and feeding direction according to the rotation direction of the rotary blades 1 and 2 are synchronously opened, so that the cut grass can be discharged. The operation can be made simple, quick and accurate, the number of erroneous operations can be reduced, and the work efficiency can be improved.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. The mower has a mower deck 3 attached to the front side of a hand-shaped tractor body 8 having a handle 7. The vehicle body 8 has a pair of crawlers 9 on the left and right sides in the forward direction F of the fuselage. An engine 10 is mounted on the upper side, and the engine 10 transmits the crawlers 9 and the rotary blades 1 and 2 in the mower deck 3 via a transmission mechanism. To transmit the rotation. A pair of upper and lower parallel connecting links 12 are vertically rotatably connected to a connecting bracket 11 at a front portion of the vehicle body 8, and a front end of the connecting link 12 is connected to a transmission case 13 above the mower deck 3. A belt 16 is stretched between the output shaft 14 of the connecting portion of the connecting link 12 on the transmission shaft 11 and the input shaft 15 of the transmission case 13 to transmit power from the engine 10 to the rotary blades 1 and 2. I have.
[0007]
The mower deck 3 has a pair of left and right rotary blades 1 and 2 mounted on the shafts 17 and 18 therein. In this rotary blade, in a wide cutting blade form, the cutting blades can be arranged in a multiple form such as a right and left triple or quadruple. Each of the rotary blades 1 and 2 has a form in which blades are arranged in two stages on shafts 17 and 18, respectively. A transmission case 13 is provided on the upper side of the mower deck 3, and a horizontal input shaft 15 is mounted on the transmission case 13. The shafts 17, 17 are connected to the input shaft 15 via bevel gears 21 having clutch gears 19, 20. 18 is driven and rotated. When the shifter pin 23 located at the center of the input shaft 15 is moved right and left by the switching lever 24 that rotates around the support pin 22 on the transmission case 13, the input shaft 15 is moved left and right. As shown in FIG. 1, the spline shaft portions 25, 25 formed at two places on the left and right of the input shaft 15 are fitted and meshed with the serration portions of the right clutch gear 20 and the left clutch gear 19, or as shown in FIG. 4 can be switched to fit and mesh with the serrations of the left clutch gears 19 and 19, or as shown in FIG. 4, so as to fit and mesh with the serrations of the right clutch gears 20 and 20. This is a transmission configuration in which the rotation directions of the blades 1 and 2 can be switched.
[0008]
The mode of switching the outlets 4, 5 and 6 for switching the direction of the cut grass is such that the middle outlet 4 is always open and the left and right outlets 5 and 6 can be opened and closed. Of course, it is also possible to adopt a configuration in which a shutter is provided at the middle discharge port 4 so that the shutter can be opened and closed. The left and right outlets 5 and 6 are provided with shutters 29 and 30 that are opened and closed via a closing spring 27 and an opening spring 28 by an interlocking operation of the wire 26. The shutters 29 and 30 are rotatably provided by an opening / closing shaft 32 provided on a bracket 31 on the mower deck 3. By pulling the wire 26, the shutters 29, 30 are closed and rotated A around the opening / closing axis 32 via the closing spring 27 and against the opening spring 28 to close the outlets 5, 6 (FIG. 5). ). Conversely, when the wire 26 is loosened, the shutters 29 and 30 are opened and rotated B upward by the open spring 28 to open the discharge ports 5 and 6 (FIG. 6).
[0009]
The wire 26 for opening and closing the left and right shutters 29 and 30 is connected to the switching lever 24 so as to obtain the rotation direction of the rotary blades 1 and 2 to the side corresponding to the respective cutting grass discharge directions. That is, when the cut grass is discharged backward from the middle discharge port 4, the switching lever 24 is operated to the central portion N (FIG. 1), so that the left rotating blade 1 is clockwise C and the right rotating blade 2 is counterclockwise. It is rotated toward the center rear in the direction of D. The shift shaft 23 of the switching lever 24 causes the input shaft 15 to be positioned at the center in the left and right direction, the left spline shaft 25 meshes with the inner clutch gear 20, and the right spline shaft 25 also meshes with the inner clutch gear 19. Then, the left and right rotary blades 1 and 2 by the rotation of the input shaft 15 are rotationally transmitted in opposite directions C and D toward the center rear. In addition, the switching lever 24 pulls the wires 26 on both the left and right sides, closes both the left and right shutters 29, 30 and closes the left and right outlets 5, 6.
Further, when discharging from the left discharge port 5 to the outside, the switching lever 24 is operated to the left side L (FIG. 3), so that the left and right rotary blades 1 and 2 are rotationally transmitted in the same counterclockwise direction D, and , The shutter 29 of the left outlet 5 is opened. When the input shaft 15 is moved leftward by the shifter pin 23 of the switching lever 24, both the left and right spline shafts 25 mesh with the left clutch gear 19, and the left and right rotary blades 1 and 2 rotate in the same counterclockwise direction D. It is transmitted. In addition, the right wire 26 is pulled against the opening spring 28 to keep the right shutter 30 closed. However, the left wire 26 is loosened, the left shutter 29 is opened and rotated, and the left discharge is performed. Open Exit 5.
[0010]
Further, when discharging from the right discharge port 6, the switching lever 24 is operated to the right side R (FIG. 4) to switch the transmission of the rotary blades 1 and 2 and the shutter 29 in substantially the same manner as in the case of the left side discharge. , 30 are performed. Here, the spline shaft portion 25 is engaged with the right side clutch gear 20 portion on both the left and right sides, and transmits the rotation of the left and right rotary blades 1 and 2 to the same clockwise direction C. Further, the left shutter 29 is closed while the left wire 26 is pulled, and the right shutter 30 is opened by loosening the right wire 26 to open the right discharge port 6.
The rear part of the middle discharge port 4 of the mower deck 3 is viewed from the gap 33 between the right and left crawlers 9, and guides the discharged cut grass backward through the gap 33. Further, a guide plate 34 having a gate-shaped cross section is provided in the space 33 at the bottom of the vehicle body 8. When the grass is discharged from the left and right discharge ports 5 and 6, the cut grass is discharged along the outside of the left and right crawlers 9. A gauge wheel 35 supports the mower deck 3 to the ground.
Since the input shaft 15 is configured to be movable left and right with respect to the transmission case 13, the input shaft 15 is slidable with respect to the clutch gears 19 and 20 at the fixed position, the input pulley 36 over which the belt 16 is wound, and the like. The clutch gears 19 and 20 are configured to rotate integrally at the engaged positions.
When a middle shutter is provided in the middle discharge port 4, the switching shutter 24 is operated to the central portion N to open the middle shutter, and is operated to the left L or the right R to close the middle shutter. can do.
Further, the interlocking configuration between the switching of the rotation direction of the rotary blades 1 and 2 and the switching of the cut grass release direction includes a mechanical interlocking mechanism such as a link mechanism in addition to the switching lever 24 and the wire 26 as described above. Alternatively, they may be linked by an electromagnetic mechanism or the like. Further, the interlocking operation can be switched by a remote control tool installed near the steering handle 7 to improve the operability.
[Brief description of the drawings]
FIG. 1 is a plan view of a mower deck.
FIG. 2 is a front view of a mower deck.
FIG. 3 is a plan view showing the operation state.
FIG. 4 is a plan view showing the operation state.
FIG. 5 is a front view showing an operation state of the shutter unit.
FIG. 6 is a front view showing an operation state of the shutter unit.
FIG. 7 is a side view of the entire mower.
FIG. 8 is a plan view of a part thereof.
[Explanation of symbols]
1 rotary blade 2 rotary blade 3 mower deck 4 middle discharge port 5 left discharge port 6 right discharge port

Claims (1)

回転方向を切替可能の複数の回転刃(1),(2)を軸装するモーアデッキ(3)に、後側中央部の中排出口(4)と、左右両側部で開閉可能の左排出口(5)と右排出口(6)とを配置し、これら回転刃(1),(2)の回転方向の切替えと、左、右排出口(5),(6)との切替えを連動することを特徴とするモーアの刈草放出装置。A mower deck (3) on which a plurality of rotary blades (1) and (2) whose rotation direction can be switched is mounted. (5) and a right outlet (6) are arranged, and switching of the rotation direction of these rotary blades (1) and (2) and switching of the left and right outlets (5) and (6) are linked. A mower-cutting device for mowers, characterized in that:
JP2003039572A 2003-02-18 2003-02-18 Cut grass discharging apparatus of mower Pending JP2004248523A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011005156A1 (en) * 2009-07-09 2011-01-13 Husqvarna Ab Electrical two-way rotary trimmer
SE2050119A1 (en) * 2020-02-06 2021-08-07 Husqvarna Ab Control arrangement, robotic lawnmower, and method of operating robotic lawnmower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011005156A1 (en) * 2009-07-09 2011-01-13 Husqvarna Ab Electrical two-way rotary trimmer
SE2050119A1 (en) * 2020-02-06 2021-08-07 Husqvarna Ab Control arrangement, robotic lawnmower, and method of operating robotic lawnmower
SE544518C2 (en) * 2020-02-06 2022-06-28 Husqvarna Ab Control arrangement, robotic lawnmower, and method of operating robotic lawnmower

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