JP2008173043A - Front mower-type riding lawn mower - Google Patents

Front mower-type riding lawn mower Download PDF

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JP2008173043A
JP2008173043A JP2007008470A JP2007008470A JP2008173043A JP 2008173043 A JP2008173043 A JP 2008173043A JP 2007008470 A JP2007008470 A JP 2007008470A JP 2007008470 A JP2007008470 A JP 2007008470A JP 2008173043 A JP2008173043 A JP 2008173043A
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mower
grass
transmission
blower
support
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JP5168908B2 (en
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Hidekazu Tsuji
英和 辻
Takashi Okamoto
傑 岡元
Renshi Goto
廉史 後藤
Kazuhisa Tamura
和久 田邨
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a front mower-type riding lawn mower designed to be short, in a grass-gathering system ranging from a mowering part in front of driving wheels to a blower so as to enable the machine body constitution to be made compact. <P>SOLUTION: The front mower-type riding lawn mower comprises the right and left driving wheels 4 that function to make a travel support of the machine body, while receiving engine mechanical power via a speed-variable transmission unit 3; a mower 5 supported in front of the driving wheels 4; a grass-gathering duct 6 and a grass-gathering blower 7 for gathering cut grass from the mower 5; and an operating unit 8 for operating the above equipment. In this riding lawn mower, right and left transmission-support parts 11 for the respective right and left driving wheels 4, 4 are extendedly set up in the speed-variable transmission unit 3 in an integrated fashion, a steering unit 8 is suspendedly set up on the right and the left transmission-support parts 11, and a rear frame 12, equipped with travel-support rear wheels 13 behind the speed-variable transmission unit 3, is extendedly set up in an integrated fashion from the speed-variable transmission unit 3, wherein the rear frame 12 is suspendedly mounted with a prime-moving engine 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、機体を走行支持する左右の駆動輪の前方にモワーを支持し、集草ダクトおよび集草ブロアと、操縦座席を含む操縦部とを備えるフロントモワー型乗用芝刈機に関するものである。   The present invention relates to a front mower type riding lawn mower that supports a mower in front of left and right drive wheels that travel and support an airframe, and includes a grass collecting duct and a grass collecting blower, and a control unit including a control seat.

特許文献１または特許文献２の例に示されるように、機体を走行支持する左右の駆動輪の前方にモワーを支持し、集草ダクトおよび集草ブロアと、操縦座席を含む操縦部とを備えるフロントモワー型乗用芝刈機が知られている。
その集草系は、機体前端のモワーと、このモワーから後方に延びる集草ダクトおよびこの集草ダクトに介設する集草ブロアとから構成され、オペレータが操縦座席で操縦部を介して機器操作をすることにより機体前方の植草を刈り取って機体後部配置の貯留部に収容しつつ、草刈り走行することができる。
ＵＳＰ４，５８９，２４９号公報 ＥＰ０８４０９９８Ａ２号公報 As shown in the example of Patent Document 1 or Patent Document 2, the mower is supported in front of the left and right drive wheels that support the airframe, and includes a grass collecting duct and a grass collecting blower, and a control unit including a control seat. A front mower type riding lawn mower is known.
The grass collection system consists of a mower at the front end of the aircraft, a grass collection duct extending rearward from the mower, and a grass blower interposed in the grass collection duct. By cutting, the grass in front of the fuselage can be cut and stored in the storage part arranged at the rear of the fuselage, and the grass can be cut and traveled.
USP 4,589,249 EP0840998A2 publication

しかしながら、上記構成のフロントモワー型乗用芝刈機は、集草ダクトが機体前端のモワーから前輪駆動部の後方に配置した送風機までの長い経路で構成されることから、それに伴う集草力確保のための集草系の大型化と合わせ、機体構成の大型化を招き、全体としての軽量化、コンパクト化のネックとなっていた。   However, the front mower type riding lawn mower configured as described above has a long path from the mower at the front end of the fuselage to the blower located behind the front wheel drive unit. In addition to the increase in the size of the grass collection system, the size of the fuselage has been increased, which has become a bottleneck for weight reduction and compactness as a whole.

解決しようとする問題点は、駆動輪の前方の草刈部からブロアに至る集草系を短く形成することにより機体構成のコンパクト化を可能とするフロントモワー型乗用芝刈機を提供することにある。   The problem to be solved is to provide a front mower type riding lawn mower that enables a compact body structure by shortening the grass collection system from the mowing part in front of the drive wheel to the blower.

請求項１に係る発明は、変速伝動部（３）を介してエンジン動力を受けつつ機体を走行支持する左右の駆動輪（４,４）と、この左右の駆動輪（４，４）の前方に支持したモワー（５）と、このモワー（５）から刈草を集める集草ダクト（６）および集草ブロア（７）と、これらの機器を操作するための操縦部（８）とを備えるフロントモワー型乗用芝刈機において、上記変速伝動部（３）には、左右の駆動輪（４，４）をそれぞれ伝動支持する左右の伝動支持部（１１）を前方に一体に延設し、この左右の伝動支持部（１１）に操縦部（８）を架設するとともに、上記変速伝動部（３）からその後方に走行支持用の後輪（１３）を備えた後部フレーム（１２）を一体に延設し、この後部フレーム（１２）に原動用のエンジン（２）を装架してなることを特徴とする。   According to the first aspect of the present invention, the left and right drive wheels (4, 4) that support the vehicle body while receiving the engine power via the speed change transmission portion (3), and the front of the left and right drive wheels (4, 4). The front is provided with a mower (5) supported by the above, a grass collecting duct (6) and a grass collecting blower (7) for collecting cut grass from the mower (5), and a control unit (8) for operating these devices. In the mower-type riding lawn mower, left and right transmission support portions (11) for transmitting and supporting the left and right drive wheels (4, 4) are integrally extended forward in the shift transmission portion (3). A steering part (8) is installed on the transmission support part (11), and a rear frame (12) provided with a rear wheel (13) for running support is integrally extended from the transmission part (3) to the rear. And install the engine (2) for driving on the rear frame (12) It is characterized by becoming.

上記構成の芝刈機は、左右の駆動輪が変速伝動部からその前方に門型に延びる左右の伝動支持部を介して機体を走行支持し、この左右の伝動支持部により操縦部が支持され、変速伝動部から後方の後部フレームによってエンジン等が支持される。   The lawn mower configured as described above has the left and right drive wheels run and support the vehicle body via left and right transmission support portions extending in a gate shape in front of the transmission portion, and the left and right transmission support portions support the control unit, The engine and the like are supported by the rear frame behind the transmission gear.

請求項２に係る発明は、請求項１の構成において、前記操縦部の下方範囲で左右の伝動支持部の間にモワーから接続する集草ダクトおよびこの集草ダクトに介設する集草ブロアを支持したことを特徴とする。上記集草ダクトおよび集草ブロアは、前方に開いた左右の伝動支持部の間でフロント配置のモワーと接続して集草系が構成される。   According to a second aspect of the present invention, in the configuration of the first aspect, a grass collecting duct connected from a mower between the left and right transmission support portions in a lower range of the control portion, and a grass collecting blower interposed in the grass collecting duct are provided. It is characterized by being supported. The grass collecting duct and the grass collecting blower are connected to a front-mounted mower between the left and right transmission support portions that are opened forward to form a grass collecting system.

請求項１の左右の伝動支持部により操縦部が支持され、後方の後部フレームによってエンジン等が支持されるので、左右の伝動支持部の内側位置にフロント配置のモワーに臨む自由空間を確保することができることから、変速伝動部と集草系との間の取り回し調整を要することなく、左右の伝動支持部を一体とする変速伝動部を中心に走行機体を構成することができる。   The steering part is supported by the left and right transmission support parts of claim 1, and the engine and the like are supported by the rear rear frame, so that a free space facing the front-mounted mower is secured inside the left and right transmission support parts. Therefore, the traveling machine body can be configured around the transmission transmission unit in which the left and right transmission support units are integrated without requiring adjustment of the routing between the transmission transmission unit and the grass collection system.

請求項２の構成により、集草ダクトおよび集草ブロアは、前方に開いた左右の伝動支持部の間でフロント配置のモワーと接続して集草系が構成され、モワーからの直近配置接続による最短経路で集草系が構成されることから、機体構成について最大限のコンパクト化を図ることができる。   According to the configuration of claim 2, the grass collection duct and the grass collection blower are connected to the front-arranged mower between the left and right transmission support portions that are opened forward, so that the grass-gathering system is configured. Since the grass collection system is configured with the shortest path, the aircraft structure can be made as compact as possible.

上記技術思想に基づいて具体的に構成された実施の形態について以下に図面を参照しつつ説明する。
図１は、本発明に係るフロントモワー型乗用芝刈機の側面図を示す。
フロントモワー型乗用芝刈機１は、エンジン２の動力を受ける変速伝動部３と、この変速伝動部３を介して機体を走行支持する左右の駆動輪４，４と、この左右の駆動輪４，４の前方に支持したモワー５と、このモワー５から刈草を集める集草ダクト６と、この集草ダクト６の中間に介設する集草ブロア７と、これらの機器を操作する操縦部８と、オペレータ用の操縦座席９等を備えて構成される。 Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
FIG. 1 shows a side view of a front mower type riding lawn mower according to the present invention.
The front mower-type riding lawn mower 1 includes a speed change transmission unit 3 that receives the power of the engine 2, left and right drive wheels 4, 4 that travel and support the machine body via the speed change transmission unit 3, and the left and right drive wheels 4, 4. 4, a mower 5 supported in front of the mower 5, a grass collecting duct 6 for collecting cut grass from the mower 5, a grass collecting blower 7 interposed in the middle of the grass collecting duct 6, and a control unit 8 for operating these devices. And an operator's control seat 9 and the like.

詳細に説明すると、上記変速伝動部３には、その要部拡大平面図を図２に示すように、左右の駆動輪４，４をそれぞれチェーン等によって伝動支持する左右の伝動支持部１１，１１を前方に一体に延設し、この左右の伝動支持部１１，１１から前方にステップフレーム８ａを延出して操縦部８を架設する。この操縦部８の下方には、左右の伝動支持部１１，１１の間の位置にモワー５から延びる集草ダクト６およびこの集草ダクト６に介設する集草ブロア７を支持する。   More specifically, the transmission transmission unit 3 includes left and right transmission support units 11 and 11 for transmitting and supporting the left and right drive wheels 4 and 4 with chains or the like, as shown in FIG. Is integrally extended forward, and the step frame 8a is extended forward from the left and right transmission support portions 11 and 11, and the control portion 8 is installed. A grass collection duct 6 extending from the mower 5 and a grass collection blower 7 interposed in the grass collection duct 6 are supported at a position between the left and right transmission support portions 11 and 11 below the control portion 8.

また、上記変速伝動部３の後方には、エンジン２を支持する後部フレーム１２，１２を一体に延設する。この後部フレーム１２，１２には、転向輪１３，１３を設けて機体後部を支持するとともに、操縦座席９の背面位置にフレーム１４を立ち上げ、このフレーム１４によってエンジン２の上部に不図示の刈草コンテナＣを着脱可能に搭載し、この刈草コンテナＣに臨んで操縦座席９の片側方から集草ダクト６の排出部６ａを立ち上げて構成する。   Further, rear frames 12, 12 that support the engine 2 are integrally extended behind the speed change transmission unit 3. The rear frames 12, 12 are provided with turning wheels 13, 13 to support the rear part of the machine body, and a frame 14 is raised at the back position of the control seat 9. A container C is detachably mounted, and the discharge section 6a of the grass collection duct 6 is raised from one side of the control seat 9 so as to face the mowing container C.

上記構成のフロントモワー型乗用芝刈機１は、左右の駆動輪４，４が変速伝動部３の前方に門型に延びた左右の伝動支持部１１，１１を介して機体を走行支持し、その左右の伝動支持部１１，１１により操縦部８が支持され、変速伝動部３から後方の後部フレーム１２，１２によってエンジン２等が支持される。したがって、左右の伝動支持部１１，１１の内側にフロント配置のモワー５に臨む自由空間を確保することができることから、変速伝動部３と集草系との間の取り回し調整を要することなく、左右の伝動支持部を一体とする変速伝動部３を中心に走行機体を構成することができる。   In the front mower type riding lawn mower 1 having the above-described configuration, the left and right drive wheels 4 and 4 travel and support the vehicle body via left and right transmission support portions 11 and 11 that extend in a gate shape in front of the transmission portion 3. The steering portion 8 is supported by the left and right transmission support portions 11, 11, and the engine 2 and the like are supported from the transmission transmission portion 3 by the rear rear frames 12, 12. Therefore, since it is possible to secure a free space facing the front-mounted mower 5 inside the left and right transmission support portions 11, 11, the left and right transmissions are not required to be adjusted between the transmission transmission portion 3 and the grass collection system. The traveling machine body can be configured around the transmission transmission unit 3 in which the transmission support unit is integrated.

集草ダクト６および集草ブロア７は、前方に開いた左右の伝動支持部１１，１１の間でフロント配置のモワー５と接続して集草系を構成する。したがって、モワー５からの直近配置接続による最短経路で集草系が構成されることから、機体構成について最大限度までコンパクト化を図ることができる。   The grass collection duct 6 and the grass collection blower 7 are connected to the front-mounted mower 5 between the left and right transmission support portions 11, 11 opened forward to constitute a grass collection system. Therefore, since the grass collection system is configured by the shortest path by the nearest arrangement connection from the mower 5, the airframe configuration can be made compact to the maximum extent.

次に、動力伝達系について説明する。
動力の伝達系は、図３の要部拡大側面図に示すように、エンジン２の動力を連結軸２１によって変速伝動部３の変速入力軸２２に受け、変速伝動部３の後面側に設けたＨＳＴ式の前後進無段変速機構２３に上記変速入力軸２２からギヤ列２３ａによって動力を受け、その変速出力をドライブ軸２３ｂで受け、さらに減速された出力を差動機構２４を介して左右の伝動支持部１１，１１に伝達するとともに、上記ドライブ軸２３ｂと一体で、変速伝動部３の後方に延びる後輪駆動軸２５に走行動力を出力する。 Next, the power transmission system will be described.
As shown in the enlarged side view of the main part of FIG. 3, the power transmission system is provided on the rear surface side of the transmission transmission unit 3 by receiving the power of the engine 2 on the transmission input shaft 22 of the transmission transmission unit 3 by the connecting shaft 21. The HST forward / reverse continuously variable transmission mechanism 23 receives power from the gear change input shaft 22 through the gear train 23 a, receives the gear shift output by the drive shaft 23 b, and further receives the reduced output through the differential mechanism 24. The power is transmitted to the transmission support portions 11, 11, and the traveling power is output to the rear wheel drive shaft 25 that is integral with the drive shaft 23 b and extends rearward of the transmission transmission portion 3.

また、変速入力軸２２の入力端側にはハット型ハブを有するプーリー３１ａによるベルト伝動機構３１を設ける。その従動プーリー３１ａを取付けたＰＴＯ軸３２は、一側方の伝動支持部１１に寄せて配置し、その先端側をモワー５と連結する。上記ＰＴＯ軸３２は、変速伝動部３および伝動支持部１１にそれぞれ設けた軸受３３ａ，３３ｂによって同ＰＴＯ軸３２を軸支する。この支持構成により、簡易なカバーパイプによる省スペース伝動構成が可能となるので、レイアウトの自由度を確保することができる。   Further, a belt transmission mechanism 31 by a pulley 31a having a hat-type hub is provided on the input end side of the transmission input shaft 22. The PTO shaft 32 to which the driven pulley 31 a is attached is disposed close to the transmission support portion 11 on one side, and the tip side is connected to the mower 5. The PTO shaft 32 supports the PTO shaft 32 by bearings 33a and 33b provided in the transmission unit 3 and the transmission support unit 11, respectively. With this support configuration, a space-saving transmission configuration using a simple cover pipe is possible, so that a degree of layout freedom can be ensured.

上記ベルト伝動機構３１は、Ａ矢視図を図４に示すように、入力側のプーリー３１ａからその直下に位置する前後進無段変速機構２３の側方からＰＴＯ軸３２に伝動し、ベルトの緩み側を外側として後部フレーム１２との間にベルトクラッチ３１ｃを構成する。このベルトクラッチ３１ｃを含むベルト伝動機構３１は、側面視で前後進無段変速機構２３の一部と重なるように構成することにより、伝動系の前後方向の構成寸法を抑えることができる。   As shown in FIG. 4, the belt transmission mechanism 31 is transmitted from the pulley 31a on the input side to the PTO shaft 32 from the side of the forward / reverse continuously variable transmission mechanism 23 located immediately below the pulley 31a. A belt clutch 31c is formed between the loose side and the rear frame 12 as an outside. By configuring the belt transmission mechanism 31 including the belt clutch 31c so as to overlap with a part of the forward / reverse continuously variable transmission mechanism 23 in a side view, it is possible to suppress the longitudinal dimension of the transmission system.

また、変速入力軸２２にクラッチ４１を設けるとともに、同変速伝動部３の前面側に集草ブロア７のブロワー軸７ａを軸支し、このブロワ軸７ａに伝動するギヤ列４２を変速入力軸２２の先端部に構成する。   In addition, a clutch 41 is provided on the transmission input shaft 22, and the blower shaft 7 a of the grass blower 7 is pivotally supported on the front side of the transmission transmission unit 3, and a gear train 42 transmitted to the blower shaft 7 a is connected to the transmission input shaft 22. The tip is configured.

次に集草系について説明すると、集草ダクト６は、図５（ａ）の拡大側面図およびそのＢ矢視図を同図（ｂ）に示すように、上下可動に支持されたモワー５と接続する回動口６ｂを集草ブロア７の前面部に備える。この回動口６ｂは、車幅方向配置の支軸６ｃによって軸支するとともに、トルクスプリング６ｄを取付けて同回動口６ｂを上向きに付勢する。このように構成することにより、モワー５を外して移動する際に回動口６ｂと地面との干渉を避けることができる。   Next, the grass collection system will be described. The grass collection duct 6 includes an upper side view of FIG. 5A and an arrow B view thereof as shown in FIG. A rotating port 6 b to be connected is provided on the front surface of the grass collecting blower 7. The rotation port 6b is supported by a support shaft 6c arranged in the vehicle width direction, and a torque spring 6d is attached to urge the rotation port 6b upward. By comprising in this way, when removing the mower 5 and moving, interference with the rotation opening 6b and the ground can be avoided.

集草ブロア７は、分解斜視図付の正面図および平面図を図６、図７にそれぞれ示すように、前記ブロワ軸７ａに軸支されるブロワ羽根７ｂとブロワケース７ｃとを備え、前記変速入力軸２２、クラッチ４１、伝動ギヤ列４２を経て伝動されるブロア軸７ａの回転に伴いブロア羽根７ｂが回転し起風する構成である。また、ブロワケース７ｃは、その後壁部を前記変速伝動部３のケースに直接乃至該ケースと一体のスペーサ部材に対して着脱自在にボルト止めされる構成である。ブロワケース７ｃの前壁部には、ブロワ羽根７ｂ径よりもやや大きい形状の円板７ｄを着脱自在に設けて、該円板７ｄには集草ダクト６を嵌合させる庇部を形成した入口板７ｅを形成している。なお、集草ブロワ７は操縦座席９の下方に配置し、同集草ブロア７から集草ダクト６の排出部６ａを操縦座席９の側方に立ち上げるとともに、排出部６ａをその外側位置で適宜に着脱自在に固定する。   The grass-collecting blower 7 includes a blower blade 7b and a blower case 7c that are pivotally supported by the blower shaft 7a, as shown in FIGS. With the rotation of the blower shaft 7a transmitted through the input shaft 22, the clutch 41, and the transmission gear train 42, the blower blade 7b rotates and winds up. The blower case 7c is configured such that the rear wall portion thereof is detachably bolted directly to the case of the speed change transmission portion 3 or to a spacer member integrated with the case. A disc 7d having a shape slightly larger than the diameter of the blower blade 7b is detachably provided on the front wall portion of the blower case 7c, and an inlet formed with a flange portion into which the grass collecting duct 6 is fitted is formed on the disc 7d. A plate 7e is formed. The grass blower 7 is disposed below the control seat 9 and the discharge portion 6a of the grass collection duct 6 is raised from the grass blower 7 to the side of the control seat 9, and the discharge portion 6a is positioned at the outer side. Fix appropriately and detachably.

このような集草ブロワ７の支持構造により、集草ブロワ７の取付け作業が容易となる。すなわち、集草ブロワ７は、左右の駆動輪４，４、伝動支持部１１，１１及び変速伝動部３によって３方を囲まれる一方で、前側のモワー５を取り外すことによって前面側が開放されることから、正面側からブロワケース７ｃの前壁部の円板７ｅを外し、さらにはブロワ羽根７をブロワ軸７ａから外して詰った異物の除去等のメンテナンスが行える。また、操縦座席９のシート部９ａを着脱式とし、集草ブロワ７を側転回動可能に構成することによって、集草系に詰まった刈草の排除やメンテナンスが容易となる上に、サイドディスチャージモワーへの対応が容易となる。   Such a support structure of the grass blower 7 makes it easy to attach the grass blower 7. That is, the grass blower 7 is surrounded on three sides by the left and right drive wheels 4, 4, the transmission support portions 11, 11 and the transmission transmission portion 3, while the front side is opened by removing the front mower 5. Thus, the disk 7e on the front wall of the blower case 7c is removed from the front side, and the blower blade 7 is removed from the blower shaft 7a to perform maintenance such as removal of clogged foreign matter. In addition, the seat portion 9a of the control seat 9 is detachable, and the grass blower 7 is configured so as to be able to rotate sideways, thereby facilitating the removal and maintenance of the grass that is stuck in the grass collection system, and the side discharge motor. It becomes easy to handle.

次に、上記集草系および伝動系の構成に必要な機体のフレーム構成の詳細について説明する。
機体のフレーム構成は、側面図、平面図、正面図を図１０〜図１２にそれぞれ示すように、前記左右の伝動支持部１１，１１の後部上側には夫々側面視Ｌ型の台座Ｈ，Ｈを固定する。このＬ型台座Ｈ，Ｈに断面コ型の中間フレームＩ，Ｉを一体的に構成し、Ｌ型台座Ｈ，Ｈの前側上向きに後部支持脚フレームＡ，Ａを取付けて前部フレームＢ，Ｂの後部側を支持構成する。伝動支持部１１，１１の前側には前部支持脚フレームＤ，Ｄを設け、前部フレームＢ，Ｂの前部側を支持構成している。そして、左右の前部フレームＢ，Ｂ間は、前端の連結フレームＣ、中間部の連結フレームＦで連結されて剛体化されている。なお、正面視Ｕ字型のフレームＧ，Ｋを前記中間フレームＩ，Ｉ間に設けて図外燃料タンクを支持できる構成としている。 Next, details of the frame structure of the airframe necessary for the grass collection system and the transmission system will be described.
As shown in FIGS. 10 to 12, the frame structure of the fuselage is shown in side views, plan views, and front views, respectively. To fix. An intermediate frame I, I having a U-shaped cross section is integrally formed on the L-shaped pedestals H, H, and rear support leg frames A, A are attached to the front sides of the L-shaped pedestals H, H, and front frames B, B are attached. The rear side is supported. Front support leg frames D, D are provided on the front side of the transmission support portions 11, 11, and the front side of the front frames B, B is supported. The left and right front frames B and B are connected to each other by a connecting frame C at a front end and a connecting frame F at an intermediate portion to be rigid. A U-shaped frame G, K in front view is provided between the intermediate frames I, I so as to support a fuel tank (not shown).

前記支持フレームＩの後端に該フレームＩと同形状の後部フレーム１２を設け、左右の後部フレーム１２，１２間には後端に配置された連結フレームＬ、操舵輪を支持する車軸フレームＮ、フライホイル下方を保護する第２下部フレームＭによって剛体化されている。以上のように構成されたフレーム構成のうち、前部フレームＢ，Ｂ間にはその上方側に操縦部を配置するもので、ステップ板、左右レバー操作部用カバー部材を配設するほか、座席フレームＰ，Ｐには座席を固定し、一方下方側には、モワー５、集草ブロワ７等を配置する。中間フレームＩ，Ｉ間には伝動ケース３、ＨＳＴ２３を配置する。後部フレーム１２，１２には前記のようにエンジンを搭載するものである。   A rear frame 12 having the same shape as the frame I is provided at the rear end of the support frame I, and a connecting frame L disposed at the rear end between the left and right rear frames 12, 12, an axle frame N for supporting the steering wheel, It is rigidized by a second lower frame M that protects the lower part of the flywheel. Among the frame configurations configured as described above, a steering part is arranged between the front frames B and B, and a step plate, a left / right lever operating part cover member, and a seat are arranged. Seats are fixed to the frames P and P, while a lower 5, a grass collecting blower 7 and the like are disposed on the lower side. A transmission case 3 and an HST 23 are disposed between the intermediate frames I and I. The engine is mounted on the rear frames 12 and 12 as described above.

次に、別の変速伝動部の構成例について説明する。以下において、前記同様の部材はその符号を付すことにより説明を省略する。
変速伝動部５１は、図８の要部拡大縦断側面図に示すように、変速入力軸２２の動力をギヤ列４２によってブロワー軸７ａの下方に設けたモワークラッチ５２まで伝動し、このモワークラッチ５２をモワー５のＰＴＯ軸５３と連結する。 Next, a configuration example of another speed change transmission unit will be described. In the following description, the same members as those described above are denoted by the same reference numerals, and description thereof is omitted.
As shown in the enlarged vertical sectional side view of the main part of FIG. 8, the transmission transmission unit 51 transmits the power of the transmission input shaft 22 to the work latch 52 provided below the blower shaft 7 a by the gear train 42. Is connected to the PTO shaft 53 of the mower 5.

このように、ブロワー軸７ａの下流側にＰＴＯ軸５３を連結する構成とすると、ブロワクラッチの操作のみでブロワー軸７ａおよびＰＴＯ軸５３ともに停止させることができ、単一操作で複数クラッチ操作をおこなうことができ、ブロワ停止状態で刈草を供給して詰まりを生じるといった事態を回避でき、効果的である。なお、ＰＴＯ軸５３を単独で入り切りすることもできるように構成して、モーアは停止してもブロアを駆動して刈草の搬送を円滑に行わせることもできる。   As described above, when the PTO shaft 53 is connected to the downstream side of the blower shaft 7a, the blower shaft 7a and the PTO shaft 53 can be stopped only by operating the blower clutch, and a plurality of clutch operations are performed by a single operation. Therefore, it is possible to avoid a situation where the cutting grass is supplied and the clogging is caused when the blower is stopped, which is effective. The PTO shaft 53 can be turned on and off independently, and even when the mower stops, the blower can be driven to smoothly carry the cut grass.

上記モワークラッチ５２は、図９の油圧回路図に示すように、ギャポンプ６１から減圧弁６２を介して作動油を受け、この減圧弁６２の油圧ブロックから作動油を分流した上で操向系油圧回路６３を含む作業機バルブを駆動するように油圧系を構成する。このような油圧系の構成により、アイドリングや高負荷による回転ダウンの際におけるモワークラッチ５２の昇圧不足を解消することができる。   As shown in the hydraulic circuit diagram of FIG. 9, the work latch 52 receives hydraulic fluid from the gear pump 61 via the pressure reducing valve 62, and distributes the hydraulic fluid from the hydraulic block of the pressure reducing valve 62 and then steers the hydraulic pressure. The hydraulic system is configured to drive the work implement valve including the circuit 63. With such a hydraulic system configuration, it is possible to eliminate insufficient pressurization of the work latch 52 during idling or rotation down due to a high load.

次に、カバーサイドの構成については、前部はパンチングメタル、後部は板金によって構成する。このようにカバーサイドを構成することにより、エンジン２のヒートバランスを改善しつつ、エンジン２の冷却風の吹き返し防止およびコスト高のパンチングメタルの限定配置によってコストダウンが可能となる。   Next, with respect to the structure of the cover side, the front part is constituted by punching metal and the rear part is constituted by sheet metal. By configuring the cover side in this way, the heat balance of the engine 2 can be improved, and the cost can be reduced by preventing the blowback of the cooling air of the engine 2 and by the limited arrangement of the costly punching metal.

本発明に係るフロントモワー型乗用芝刈機の側面図である。It is a side view of a front mower type riding lawn mower according to the present invention. 変速伝動部まわりの要部拡大平面図である。It is a principal part enlarged plan view around a transmission gearing part. 動力伝達系の要部拡大側面図である。It is a principal part enlarged side view of a power transmission system. 図３におけるＡ４矢視図である。It is A4 arrow line view in FIG. 集草ダクトの拡大側面図（ａ）およびそのＢ矢視図（ｂ）である。It is an enlarged side view (a) and its B arrow view (b) of a grass collection duct. 集草系の要部正面図（ａ）および要部分解斜視図（ｂ）である。It is the principal part front view (a) and principal part disassembled perspective view (b) of a grass collection system. 図６の集草系の平面図である。It is a top view of the grass collection system of FIG. 別構成の変速伝動部の要部拡大縦断側面図である。It is a principal part expansion vertical side view of the speed change transmission part of another structure. 油圧回路図である。It is a hydraulic circuit diagram. 機体のフレーム構成の側面図である。It is a side view of the frame structure of an airframe. 図１０のフレーム構成の平面図である。It is a top view of the frame structure of FIG. 図１０のフレーム構成の正面図である。It is a front view of the frame structure of FIG.

符号の説明Explanation of symbols

１ フロントモワー型乗用芝刈機
２ エンジン
３ 変速伝動部
４ 駆動輪
５ モワー
６ 集草ダクト
６ａ 排出部
７ 集草ブロア
８ 操縦部
１１ 伝動支持部
１２ 後部フレーム DESCRIPTION OF SYMBOLS 1 Front mower type riding lawn mower 2 Engine 3 Shifting transmission part 4 Drive wheel 5 Mower 6 Grass collecting duct 6a Discharge part 7 Grass collecting blower 8 Steering part 11 Transmission support part 12 Rear frame

Claims (2)

変速伝動部（３）を介してエンジン動力を受けつつ機体を走行支持する左右の駆動輪（４,４）と、この左右の駆動輪（４，４）の前方に支持したモワー（５）と、このモワー（５）から刈草を集める集草ダクト（６）および集草ブロア（７）と、これらの機器を操作するための操縦部（８）とを備えるフロントモワー型乗用芝刈機において、
上記変速伝動部（３）には、左右の駆動輪（４，４）をそれぞれ伝動支持する左右の伝動支持部（１１）を前方に一体に延設し、この左右の伝動支持部（１１）に操縦部（８）を架設するとともに、上記変速伝動部（３）からその後方に走行支持用の後輪（１３）を備えた後部フレーム（１２）を一体に延設し、この後部フレーム（１２）に原動用のエンジン（２）を装架してなることを特徴とするフロントモワー型乗用芝刈機。 Left and right drive wheels (4, 4) that support the vehicle body while receiving engine power via the speed change transmission section (3), and a mower (5) supported in front of the left and right drive wheels (4, 4); In the front mower type riding lawn mower equipped with a grass collecting duct (6) and a grass collecting blower (7) for collecting cut grass from this mower (5), and a control unit (8) for operating these devices,
The transmission transmission section (3) is provided with a left and right transmission support section (11) for transmitting and supporting the left and right drive wheels (4, 4), respectively. And a rear frame (12) provided with a rear wheel (13) for running support on the rear side thereof is integrally extended from the speed change transmission portion (3) to the rear transmission frame (8). 12) A front mower type riding lawn mower characterized by mounting a driving engine (2) on 12). 前記操縦部（８）の下方範囲で左右の伝動支持部（１１）の間にモワー（５）から接続する集草ダクト（６）およびこの集草ダクト（６）に介設する集草ブロア（７）を支持したことを特徴とする請求項１記載のフロントモワー型乗用芝刈機。
A grass collection duct (6) connected from the mower (5) between the left and right transmission support portions (11) in the lower range of the control section (8), and a grass collection blower interposed in the grass collection duct (6) ( 7) The front mower type riding lawn mower according to claim 1, wherein the lawn mower is supported.
JP2007008470A 2007-01-17 2007-01-17 Front mower type riding lawn mower Expired - Fee Related JP5168908B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2850931A1 (en) * 2013-09-19 2015-03-25 Iseki & Co., Ltd. Riding mower
JP2017006141A (en) * 2016-09-01 2017-01-12 井関農機株式会社 Riding type mower
JP2017169586A (en) * 2017-05-30 2017-09-28 井関農機株式会社 Sulky lawn mower

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JPH0576228A (en) * 1991-09-24 1993-03-30 Honda Motor Co Ltd Riding lawn mower
JP2006014621A (en) * 2004-06-30 2006-01-19 Iseki & Co Ltd Front mower
JP2006320231A (en) * 2005-05-18 2006-11-30 Iseki & Co Ltd Mower
JP2006325555A (en) * 2005-05-30 2006-12-07 Iseki & Co Ltd Riding lawn mower

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JPH0576228A (en) * 1991-09-24 1993-03-30 Honda Motor Co Ltd Riding lawn mower
JP2006014621A (en) * 2004-06-30 2006-01-19 Iseki & Co Ltd Front mower
JP2006320231A (en) * 2005-05-18 2006-11-30 Iseki & Co Ltd Mower
JP2006325555A (en) * 2005-05-30 2006-12-07 Iseki & Co Ltd Riding lawn mower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2850931A1 (en) * 2013-09-19 2015-03-25 Iseki & Co., Ltd. Riding mower
JP2015057983A (en) * 2013-09-19 2015-03-30 井関農機株式会社 Riding type mower
JP2017006141A (en) * 2016-09-01 2017-01-12 井関農機株式会社 Riding type mower
JP2017169586A (en) * 2017-05-30 2017-09-28 井関農機株式会社 Sulky lawn mower

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