JP2004254541A - Mower deck-attaching apparatus - Google Patents

Mower deck-attaching apparatus Download PDF

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Publication number
JP2004254541A
JP2004254541A JP2003046637A JP2003046637A JP2004254541A JP 2004254541 A JP2004254541 A JP 2004254541A JP 2003046637 A JP2003046637 A JP 2003046637A JP 2003046637 A JP2003046637 A JP 2003046637A JP 2004254541 A JP2004254541 A JP 2004254541A
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JP
Japan
Prior art keywords
mower deck
transmission mechanism
input shaft
shaft
input
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
JP2003046637A
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Japanese (ja)
Inventor
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 JP2003046637A priority Critical patent/JP2004254541A/en
Publication of JP2004254541A publication Critical patent/JP2004254541A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of the conventional mower deck which is mounted on the front side of a vehicle body, whose bottom portion is directed to the front side in an opened form, when subjected to a maintenance work, which needs the separation of the interlock of a transmission mechanism, because the transmission mechanism is interlocked between the mower deck and the vehicle body, and in which the structure and operations not only for connecting or separating the transmission mechanism but also for opening the mower deck are complicated in the interlock-separated state. <P>SOLUTION: This mower deck-attaching apparatus is constituted by mounting an input case (6) on the tip of a lift arm (3) which can vertically be moved on a vehicle body (1) and along which a transmission mechanism (2) for outputting a power is disposed. The input case (6) is disposed above the mower deck (4) and has laterally an input shaft (5) which is rotated through the transmission mechanism (2), and can vertically be rotated on the input shaft (5) to open the bottom side of the mower deck (4) on the front side. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、モーアデッキをハンドトラクタ車体に取付ける刈取機のモーアデッキ取付装置に関する。
【0002】
【従来の技術】
リフトリンクの先端部に対してモーアデッキを連結ピン周りに回動可能に取付け、この連結ピンの周りにモーアデッキを回動させて底面を前側へ開放させる技術が知られている(例えば、特許文献1参照)。
【特許文献1】実開平4−62014号公報(第1頁、第3図)
【0003】
【発明が解決しようとする課題】
車体の前側に装着するモーアデッキは、メンテナンス時に底部を正面側に向けるように開放させる形態とする。しかしながら、モーアデッキには車体との間の伝動機構を連動させているため、この伝動機構の連動を切り離した状態とすることが必要である。このような形態では構成煩雑化となり、この伝動機構の接続、分離操作はもとより、モーアデッキの開放操作が複雑となる。
【0004】
【課題を解決するための手段】
請求項1に記載の発明は、車体1に対して上下回動可能で動力取出用の伝動機構2を沿わせたリフトアーム3の先端部に、モーアデッキ4の上部にあって該伝動機構2から伝動回転される入力軸5を横方向に向けて軸装する入力ケース6を、この入力軸5部の周りに上下回動可能にしてこのモーアデッキ4の底面を前側へ開放可能にして装着したことを特徴とするモーアデッキ取付装置の構成とする。モーアデッキ6に設けられるブレードは、リフトアーム3に沿って設けられる伝動機構2を介して、入力軸5及び入力ケース6内の伝動機構を経て駆動される。モーアデッキ4の昇降はリフトアーム3の車体1に対する上下回動によって行われ、刈高調節域や上下揺動時等ではこの伝動機構2によって入力軸5が常時伝動状態にあって刈取作業を維持できる。メンテナンス時等でモーアデッキ4の底面を前側に開放するときは、伝動機構12及びブレードの回転を停止させた状態で、モーアデッキ4を浮かせながら入力軸5の周りに前側上方へ回動させて、後側端部を接地させる状態にする。
【0005】
【発明の効果】
請求項1の発明は、モーアデッキ4を開放回動するときは、入力軸5の周りに回動されるため、伝動機構の掛け替えや、接続、分離等の煩雑な操作を不要として、操作を簡単化することができる。又、入力軸5を中心として入力ケース6及びブレードへの伝動機構等の前後重量バランスをよくして、モーアデッキ4の刈取時の作業姿勢の維持を安定させると共に、開閉回動操作を容易に行うことができる。
【0006】
【発明の実施の形態】
この発明の実施例を図面に基づいて説明する。刈取機は、左右一対のクローラ7を有してエンジン8によって駆動走行しうるハンド形態のトラクタ車体1の前側に、ブレード9を軸装したモーアデッキ4を昇降自在にして装着した構成とする。10は後上部に突出のハンドルで、刈取運転操作を行うことができる。エンジン8の軸11はクローラ7のスプロケット軸12をベルト13伝動すると共に、ベルト14を介して前側の連結ブラケット15上の出力軸16を伝動できる。モーアデッキ4は、上下方向のブレード軸17を左右二連に配置し、各ブレード軸17にはブレード9を二段にして配置している。このモーアデッキ4の上側に入力軸5を横方向にして軸装の入力ケース6が設けられ、各ブレード軸17はこの入力軸5から下方に垂下するように配置される。この入力ケース6の両端部が、前記連結ブラケット15上に支持されるリフトアーム3の前端部に支持連結される。この連結ブラケット15には出力軸16周りに上下回動自在のリフトアーム3の後端部が支持されて、この出力軸16上の出力プーリ18を前記ベルト14側から伝動回転することができる。伝動機構2は、入力ケース6の入力軸5の一側端部に固定の入力プーリ19と、該出力プーリ18との間にベルト20を掛け渡して伝動構成する。リフトアーム3は車体1に対してエアダンパー21を介して支持されて、モーアデッキ4の昇降を緩衝的に円滑に行わせる。22はベルト20の回転周部を覆う伝動ケースで、リフトアーム3に取付けられる。
【0007】
前記入力ケース6は、左右両端部に支持ボス23を有して、前記リフトアーム3の前端部の支持穴に嵌合支持させて、この入力軸5の軸芯の周りに回動自在の連結構成である。入力軸5の左右両側部にはベベルギヤ24,25を有して、各ブレード軸17上端部のベベルギヤ26に噛合させて伝動回転できる。この入力軸5にはクラッチスプライン27を形成して、ベベルギヤ24,25のセレーション穴に摺動嵌合して咬み合せ回転しうる形態で、この入力軸5の左右移動によって、各クラッチスプライン27を左側のベベルギヤ24のセレーション穴に咬み合せたり、右側のベベルギヤ25側に咬み合せて、ブレード軸17の回転方向を切替えることができる。入力ケース6上には切替レバー28がレバーピボット29周りに左右回動可能に設けられて、この切替レバー28の回動で入力軸5を左右へ移動させて、ブレード軸17の回転方向を切替えることができる。この切替レバー28を中央部Nに位置するときは、左右のクラッチスプライン27は内側のベベルギヤ24,25のセレーション穴に咬み合されて、左側のブレード軸17を右回りAに回転し、右側のブレード軸17を左回りBに回転するように伝動回転する。このときブレード9によって刈取られる芝草は、モーアデッキ4の中央後側に形成される中央排出口30から後方へ排出される。又、切替レバー28を左側Lへ操作すると、左右のクラッチスプライン27は共に左側のベベルギヤ24に咬み合されて、左右のブレード軸17は同左回りBに伝動回転されて、刈取られた芝草を左側の排出口31から排出させる。又、切替レバー28を右側Rへ操作するときは、同様にして左右のブレード軸17は右回りAに回転されて、芝草は右側の排出口32から排出される。
又、これら排出口31,32にはシャッター33,34が設けられて、前記切替レバー28によってワイヤー35やバネ36等を介して切替開閉されて、ブレード9の回転方向の切替えと連動して、この排出側の排出口31,32が開かれると共に、反対側の排出口32,31が閉鎖状態を維持される。
【0008】
モーアデッキ4の前端中央部には、接地輪37を支持アーム39で軸装している。又、モーアデッキ4の後端部にも接地輪38(図3参照)を配置することができる。この形態では、モーアデッキ4を入力軸4の周りに前側上部へ回動させるとき、この接地輪38を地面に接地させてモーアデッキ4の回動操作をより円滑に行わせることができる。前記モーアデッキ4の中央排出口30後側に対向の左右クローラ7の間には、トンネル形態の排出案内板40が形成されて、排出される芝草を車体1後方へ円滑に案内させる。モーアデッキ4の刈取状態と開放状態とを切替えて維持するフック41とフックプレート42とが、モーアデッキ4部とリフトアーム3との間に渡って設けられる。フック41は、前端上部にレバー49を突出し、前記支持アーム39の後部上にアームピン43で上下回動自在で左右に揺動自在にして取付けられ、ターンバックル44で長さ調節可能である。フックプレート42は、このフック41を係合させるもので、フック穴45,46を形成する。このフック41はリフトアーム3を構成する構成部材に一体に取付けている。刈取作業時はフック41をこの前側のフック穴45に係合させておき、モーアデッキ4開放時は後側のフック穴46に係合させて、開放状態を維持する。これらフック穴45又は46に係合させたフック41の先端部のピン穴にはヘアピン48を差込んで抜止めして安全を図る。
【0009】
エンジン8の駆動によって、エンジン軸11からベルト13を介してクローラ7を伝動すると共に、ベルト14介して出力軸16を伝動できる。この出力軸16からベルト20、入力プーリ19、入力軸5等を介して左右のブレード軸17が伝動されて、ブレード9の回転でモーアデッキ4の下面に案内される芝草を刈取ることができる。果樹園の果樹枝の下側等にモーアデッキ4部を潜行させて刈取作業するとき、刈取地面の凹凸面や、傾斜面等によってモーアデッキ4が車体1に対して上下に揺動するが、車体1側とモーアデッキ4との間を連結するリフトアーム3は、出力軸14と入力軸5との周りに上下回動自在にして連結されて、しかもこれらの出力軸16及び入力軸5を介して伝動されるため、モーアデッキ4が上下に移動されても、常時伝動状態を維持することができる。
又、モアーデッキ4を刈取状態から前側上方へ開動させてメンテナンス等を行うときは、先ずハンドル10部のクラッチレバー47を操作してベルト14のテンションクラッチを切りにして、出力軸16への伝動を停止させる。モーアデッキ4とリフトアーム3との間のフック41をフック穴45から外して、このモーアデッキ4の前部を持ち上げて、入力軸5の周りに回動させて、このモーアデッキ4の底部を前方へ立てて開放する状態とする。この開放状態でフック41を後側のフック穴46に係合させて、先端部にヘアピン48を差込んで抜止めして固定する。このモーアデッキ4の開放状態でメンテナンスを行った後は、このフック41をフック穴46から外してモーアデッキ4を入力軸5の周りに回動させて、刈取姿勢とするものである。フック41のフック穴45,46に対する係合、離脱は、ヘアピン48の外した状態でレバー49の操作で行うと、モーアデッキ4を前側から起伏回動しながら便利に行うことができる。
このようなモーアデッキ4においては、入力ケース6が入力軸5周りに形成されていて重量部の支持形態とされると共に、入力軸5に対して前後略対称状に構成されるため、刈取状態ではブレード軸17を垂下状態にした刈取姿勢の維持が安定され、前側上部への開放回動を円滑に行わせる。
【0010】
【図面の簡単な説明】
【図1】刈取機の側面図。
【図2】そのモーアデッキ部の斜視図と、一部の平断面図。
【図3】その作動状態を示す斜視図。
【図4】その入力ケース部の平面図。
【図5】その背面図。
【符号の説明】
1 車体
2 伝動機構
3 リフトアーム
4 モーアデッキ
5 入力軸
6 入力ケース
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mower deck mounting device for a reaper that mounts a mower deck on a body of a hand tractor.
[0002]
[Prior art]
There is known a technique in which a mower deck is rotatably mounted around a connecting pin with respect to a tip end of a lift link, and the mower deck is rotated around the connecting pin to open a bottom surface to a front side (for example, Patent Document 1). reference).
[Patent Document 1] Japanese Utility Model Application Laid-Open No. 4-62014 (Page 1, FIG. 3)
[0003]
[Problems to be solved by the invention]
The mower deck to be mounted on the front side of the vehicle body is configured to be opened so that the bottom portion faces toward the front side during maintenance. However, since the transmission mechanism between the mower deck and the vehicle body is interlocked, it is necessary to disconnect the interlocking of the transmission mechanism. In such a configuration, the configuration becomes complicated, and the operation of opening and closing the mower deck as well as the operation of connecting and disconnecting the transmission mechanism becomes complicated.
[0004]
[Means for Solving the Problems]
According to the first aspect of the present invention, the power transmission mechanism 2 for power takeout is rotatable up and down with respect to the vehicle body 1, and the distal end of the lift arm 3 is located above the mower deck 4 from the power transmission mechanism 2. An input case 6 in which a transmission-rotated input shaft 5 is mounted laterally is mounted so that the input case 6 can be turned up and down around the input shaft 5 so that the bottom surface of the mower deck 4 can be opened forward. The configuration of the mower deck mounting device is characterized by the following. The blades provided on the mower deck 6 are driven via a transmission mechanism 2 provided along the lift arm 3 via a transmission mechanism in the input shaft 5 and the input case 6. The mower deck 4 is raised and lowered by vertically moving the lift arm 3 with respect to the vehicle body 1. In a cutting height adjustment range or when swinging up and down, the transmission mechanism 2 keeps the input shaft 5 in a constantly transmitting state so that the cutting operation can be maintained. . When the bottom surface of the mower deck 4 is opened to the front side during maintenance or the like, the rotation of the transmission mechanism 12 and the blades is stopped, and the mower deck 4 is pivoted upward and forward around the input shaft 5 while floating. The side end is grounded.
[0005]
【The invention's effect】
According to the first aspect of the present invention, when the mower deck 4 is opened and rotated, it is turned around the input shaft 5, so that complicated operations such as switching of the transmission mechanism, connection and separation are not required, and the operation is simplified. Can be Further, the weight balance of the input case 6 and the transmission mechanism to the blade around the input shaft 5 is improved so that the mower deck 4 can maintain a stable working posture when mowing, and can be easily opened and closed and rotated. be able to.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. The reaper has a pair of right and left crawlers 7 and a mower deck 4 on which blades 9 are mounted on the front side of a hand-shaped tractor body 1 that can be driven and driven by an engine 8. Reference numeral 10 denotes a handle protruding upward from the rear, and can perform a mowing operation. The shaft 11 of the engine 8 can transmit the sprocket shaft 12 of the crawler 7 to the belt 13 and can transmit the output shaft 16 on the front connection bracket 15 via the belt 14. In the mower deck 4, the blade shafts 17 in the vertical direction are arranged in left and right two rows, and the blades 9 are arranged on each blade shaft 17 in two stages. An input case 6 is provided on the upper side of the mower deck 4 with the input shaft 5 in the horizontal direction, and each blade shaft 17 is arranged to hang down from the input shaft 5. Both ends of the input case 6 are supported and connected to the front ends of the lift arms 3 supported on the connection bracket 15. The rear end of the lift arm 3 that can rotate vertically around the output shaft 16 is supported by the connection bracket 15, and the output pulley 18 on the output shaft 16 can be driven and rotated from the belt 14 side. The transmission mechanism 2 is configured so that a belt 20 is stretched between an input pulley 19 fixed to one end of the input shaft 5 of the input case 6 and the output pulley 18 so as to transmit power. The lift arm 3 is supported by the vehicle body 1 via an air damper 21 to allow the mower deck 4 to move up and down smoothly in a cushioned manner. Reference numeral 22 denotes a transmission case that covers the rotating peripheral portion of the belt 20, and is attached to the lift arm 3.
[0007]
The input case 6 has support bosses 23 at both left and right ends, and is fitted and supported in a support hole at the front end of the lift arm 3 so as to be rotatable around the axis of the input shaft 5. Configuration. Bevel gears 24 and 25 are provided on both left and right sides of the input shaft 5, and can be driven to rotate by meshing with a bevel gear 26 at the upper end of each blade shaft 17. A clutch spline 27 is formed on the input shaft 5 so that the clutch spline 27 can slide and fit into the serration holes of the bevel gears 24 and 25 so as to engage and rotate. The rotation direction of the blade shaft 17 can be switched by engaging with the serration hole of the left bevel gear 24 or engaging with the right bevel gear 25 side. A switching lever 28 is provided on the input case 6 so as to be rotatable left and right around a lever pivot 29. The rotation of the switching lever 28 moves the input shaft 5 left and right to switch the rotation direction of the blade shaft 17. be able to. When the switching lever 28 is located at the central portion N, the left and right clutch splines 27 are engaged with the serration holes of the inner bevel gears 24 and 25, and rotate the left blade shaft 17 clockwise A, while The transmission shaft rotates to rotate the blade shaft 17 counterclockwise B. At this time, the turf grass cut by the blade 9 is discharged rearward from a central discharge port 30 formed at the center rear side of the mower deck 4. When the switching lever 28 is operated to the left side L, the left and right clutch splines 27 are engaged with the left bevel gear 24, and the left and right blade shafts 17 are driven to rotate counterclockwise B. Is discharged from the discharge port 31. When the switching lever 28 is operated to the right R, the left and right blade shafts 17 are similarly rotated clockwise A, and the grass is discharged from the right discharge port 32.
Further, shutters 33 and 34 are provided in these discharge ports 31 and 32, and are opened and closed by the switching lever 28 via a wire 35, a spring 36, and the like, and interlocked with switching of the rotation direction of the blade 9, The discharge ports 31 on the discharge side are opened, and the discharge ports 32 on the opposite side are kept closed.
[0008]
At the center of the front end of the mower deck 4, a grounding wheel 37 is mounted on a shaft by a support arm 39. A grounding wheel 38 (see FIG. 3) can also be arranged at the rear end of the mower deck 4. In this embodiment, when the mower deck 4 is rotated to the upper front side around the input shaft 4, the grounding wheel 38 is brought into contact with the ground so that the turning operation of the mower deck 4 can be performed more smoothly. A tunnel-shaped discharge guide plate 40 is formed between the left and right crawlers 7 opposed to the rear side of the central discharge port 30 of the mower deck 4 so as to smoothly guide discharged grass to the rear of the vehicle body 1. A hook 41 and a hook plate 42 for switching and maintaining the mower deck 4 between the mowing state and the open state are provided between the mower deck 4 and the lift arm 3. The hook 41 has a lever 49 protruding above the front end thereof, and is attached to the rear portion of the support arm 39 so as to be vertically rotatable and swingable right and left by an arm pin 43, and is adjustable in length by a turnbuckle 44. The hook plate 42 engages with the hook 41 and forms hook holes 45 and 46. The hook 41 is integrally attached to a component constituting the lift arm 3. The hook 41 is engaged with the hook hole 45 on the front side during the mowing operation, and is engaged with the hook hole 46 on the rear side when the mower deck 4 is opened to maintain the open state. A hairpin 48 is inserted into the pin hole at the tip of the hook 41 engaged with the hook hole 45 or 46 to prevent the hook 41 from slipping out, thereby ensuring safety.
[0009]
By driving the engine 8, the crawler 7 can be transmitted from the engine shaft 11 via the belt 13 and the output shaft 16 can be transmitted via the belt 14. The left and right blade shafts 17 are transmitted from the output shaft 16 via the belt 20, the input pulley 19, the input shaft 5, and the like, so that the grass that is guided to the lower surface of the mower deck 4 by the rotation of the blades 9 can be cut. When the mower deck 4 is sunk below the orchards of the orchard for mowing work, the mower deck 4 swings up and down with respect to the vehicle body 1 due to the uneven surface of the cutting ground or an inclined surface. Arm 3 that connects between the side and the mower deck 4 is connected so as to be vertically rotatable around an output shaft 14 and an input shaft 5, and is transmitted via these output shaft 16 and input shaft 5. Therefore, even if the mower deck 4 is moved up and down, the transmission state can be always maintained.
When the mower deck 4 is moved upward from the reaping state to the front upper side to perform maintenance or the like, first, the clutch lever 47 of the handle 10 is operated to release the tension clutch of the belt 14, and the transmission to the output shaft 16 is performed. Stop. The hook 41 between the mower deck 4 and the lift arm 3 is removed from the hook hole 45, the front part of the mower deck 4 is lifted and rotated around the input shaft 5, and the bottom of the mower deck 4 is set forward. Open. In this open state, the hook 41 is engaged with the hook hole 46 on the rear side, and the hairpin 48 is inserted into the tip portion to prevent the hairpin 48 from being pulled out and fixed. After maintenance is performed with the mower deck 4 open, the hook 41 is removed from the hook hole 46 and the mower deck 4 is rotated around the input shaft 5 to take a mowing posture. When the hook 41 is engaged with and disengaged from the hook holes 45 and 46 by operating the lever 49 with the hairpin 48 removed, the mower deck 4 can be conveniently moved up and down from the front.
In such a mower deck 4, the input case 6 is formed around the input shaft 5 to support the weight portion and is configured to be substantially symmetrical with respect to the input shaft 5. The maintenance of the mowing posture in which the blade shaft 17 is in the hanging state is stabilized, and the opening rotation toward the upper front side is smoothly performed.
[0010]
[Brief description of the drawings]
FIG. 1 is a side view of a reaper.
FIG. 2 is a perspective view of the mower deck and a partial plan cross-sectional view.
FIG. 3 is a perspective view showing the operation state.
FIG. 4 is a plan view of the input case section.
FIG. 5 is a rear view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 2 Transmission mechanism 3 Lift arm 4 Mower deck 5 Input shaft 6 Input case

Claims (1)

車体(1)に対して上下回動可能で動力取出用の伝動機構(2)を沿わせたリフトアーム(3)の先端部に、モーアデッキ(4)の上部にあって該伝動機構(2)から伝動回転される入力軸(5)を横方向に向けて軸装する入力ケース(6)を、この入力軸(5)部の周りに上下回動可能にしてこのモーアデッキ(4)の底面を前側へ開放可能にして装着したことを特徴とするモーアデッキ取付装置。At the tip of a lift arm (3), which is vertically rotatable with respect to the vehicle body (1) and along which a power take-off transmission mechanism (2) is located, and above the mower deck (4), the power transmission mechanism (2) An input case (6) in which an input shaft (5) transmitted and rotated from the shaft is mounted in a horizontal direction can be turned up and down around the input shaft (5) so that the bottom surface of the mower deck (4) can be rotated. A mower deck mounting device, which can be opened to the front side.
JP2003046637A 2003-02-25 2003-02-25 Mower deck-attaching apparatus Pending JP2004254541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003046637A JP2004254541A (en) 2003-02-25 2003-02-25 Mower deck-attaching apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003046637A JP2004254541A (en) 2003-02-25 2003-02-25 Mower deck-attaching apparatus

Publications (1)

Publication Number Publication Date
JP2004254541A true JP2004254541A (en) 2004-09-16

Family

ID=33113086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003046637A Pending JP2004254541A (en) 2003-02-25 2003-02-25 Mower deck-attaching apparatus

Country Status (1)

Country Link
JP (1) JP2004254541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022102620A (en) * 2020-12-25 2022-07-07 株式会社クボタ Work vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022102620A (en) * 2020-12-25 2022-07-07 株式会社クボタ Work vehicle
JP7325397B2 (en) 2020-12-25 2023-08-14 株式会社クボタ work vehicle

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