JP4324964B2 - Self-propelled riding mower - Google Patents

Self-propelled riding mower Download PDF

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JP4324964B2
JP4324964B2 JP2004006173A JP2004006173A JP4324964B2 JP 4324964 B2 JP4324964 B2 JP 4324964B2 JP 2004006173 A JP2004006173 A JP 2004006173A JP 2004006173 A JP2004006173 A JP 2004006173A JP 4324964 B2 JP4324964 B2 JP 4324964B2
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cutter
sub
vehicle body
diameter
main
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JP2005198524A (en
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登吉 毛利
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ATECS CORP
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Description

本発明は、果樹園や休耕田等の雑草刈りに用いる草刈機に関するものであり、詳しくは走行車体の腹部に刈取り装置を、又その側方へ開閉自在のサブカッターを設けた自走式乗用草刈機に関するものである。   The present invention relates to a mower used for cutting weeds such as orchards and fallow fields, and more specifically, a self-propelled riding mower provided with a cutting device on the abdomen of a traveling vehicle body and a sub-cutter that can be opened and closed laterally. Related to the machine.

特許文献１には車体腹部下方の左右中央に大径のメインカッターを設け、機体側方に固定サブカッターを設け、該固定サブカッターを中心に車体側方へ向けて開閉可能な移動サブカッターを備えた自走式乗用草刈機が記載されている。この固定サブカッターと移動サブカッターからなるサブカッターユニットは、固定サブカッターの基部を走行車体の側部に取着して一体的に上下揺動が可能である。
特開２００２−３１５４１７号公報 In Patent Document 1, a large-diameter main cutter is provided at the left and right center below the abdomen of the vehicle body, a fixed sub-cutter is provided at the side of the machine body, and a movable sub-cutter that can be opened and closed toward the vehicle body side around the fixed sub-cutter. A self-propelled riding mower provided is described. The sub-cutter unit comprising the fixed sub-cutter and the moving sub-cutter can swing up and down integrally by attaching the base of the fixed sub-cutter to the side of the traveling vehicle body.
JP 2002-315417 A

しかしながら、特許文献１のサブカッターユニットは、後方収納時にも車体幅より側方へ大きく突出しており、この時固定サブカッターの前方が障害物に接触した場合には、サブカッターユニットが破損する恐れのあるものであり、この車体幅よりも側方へ突出したサブカッターユニットは、トラック等への積み込み時にも邪魔になるという問題があった。
本発明は、上記問題を解決し、樹木等の周囲の雑草を容易に刈取ることができ、又、収納時にはサブカッターの車体側方への突出を極力少なくすることのできる自走式乗用草刈機を提供することを課題とする。 However, the sub-cutter unit of Patent Document 1 protrudes to the side larger than the vehicle body width even when stored rearward, and if the front of the fixed sub-cutter contacts an obstacle at this time, the sub-cutter unit may be damaged. The sub-cutter unit that protrudes to the side of the vehicle body has a problem in that it gets in the way when loaded onto a truck or the like.
The present invention solves the above-mentioned problem, can easily cut surrounding weeds such as trees, etc., and can reduce the protrusion of the sub cutter to the side of the body as much as possible during storage. It is an object to provide a machine.

左右一対の前輪１及び後輪２を懸架する走行車体３の腹部にメインカッター５と、走行車体３の一側方へ向け開閉可能のサブカッター６とを設けるに、両前輪幅Ｗ１に対し両後輪幅Ｗ２を幅狭に配置し、前後取付位置を異ならせて配置した後方大径カッター５ａと、該大径カッター５ａと略同径乃至小径の前方カッター５ｂからなるメインカッター５を設け、該前方カッター５ｂ後方に空間部Ｂを形成するとともに、前方カッター５ｂを中心にサブカッター６の略全体を両前輪幅Ｗ１内の後輪２外側部Ａへ向け収納可能にしてなる自走式乗用草刈機の構成とする。
又、前後取付位置を異ならせて配置した後方大径カッター５ａと、該大径カッター５ａと略同径乃至小径の前方カッター５ｂからなり、且つ、大径カッター５ａを車体３の一側方へ偏倚して配置するメインカッター５を設け、該前方カッター５ｂ後方に空間部Ｂを形成するとともに、前方カッター５ｂを中心にサブカッター６を空間部Ｂへ向け収納可能にしてなる自走式乗用草刈機の構成とする。 A main cutter 5 and a sub-cutter 6 that can be opened and closed toward one side of the traveling vehicle body 3 are provided on the abdomen of the traveling vehicle body 3 that suspends the pair of left and right front wheels 1 and rear wheels 2. The rear wheel width W2 is arranged narrowly, and a large rear cutter 5a arranged with different front and rear mounting positions, and a main cutter 5 consisting of a front cutter 5b having the same diameter or a small diameter as the large diameter cutter 5a are provided. Self-propelled riding that forms a space B behind the front cutter 5b and that allows the entire sub-cutter 6 to be housed toward the outer part 2 of the rear wheel 2 within the front wheel width W1 with the front cutter 5b as the center. The mower configuration.
Further, the rear large-diameter cutter 5a disposed at different longitudinal mounting position, Ri front cutter 5b Tona of the large diameter cutters 5a substantially equal径乃optimum diameter, and, one side of the large diameter cutter 5a vehicle body 3 the main cutter 5 which arranged offset to providing self-propelled riding along with forming the space B behind the front cutter 5b, formed by allowing housing toward the sub-cutter 6 around the front cutter 5b to space B The mower configuration.

請求項１に記載の発明は、左右一対の前輪１及び後輪２を懸架する走行車体３の腹部にメインカッター５と、走行車体３の一側方へ向け開閉可能のサブカッター６とを設けるに、両前輪幅Ｗ１に対し両後輪幅Ｗ２を幅狭に配置し、前後取付位置を異ならせて配置した後方大径カッター５ａと、該大径カッター５ａと略同径乃至小径の前方カッター５ｂからなるメインカッター５を設け、該前方カッター５ｂ後方に空間部Ｂを形成するとともに、前方カッター５ｂを中心にサブカッター６の略全体を両前輪幅Ｗ１内の後輪２外側部Ａへ向け収納可能に構成しているので、後輪２外側方Ａのスペースを有効に利用して、サブカッター６を車体３側方への突出部分を極力少なくして収納することができ、トラック等への積み込みの際にサブカッター６が邪魔になることがない。
又、サブカッター６を車体３側方へ開いた際には、車体３の重心位置はサブカッター６側へ移動するが、本発明では両後輪幅Ｗ２よりも広幅の両前輪幅Ｗ１の前輪１近傍に設けた前方カッター５ｂを中心に、サブカッター６を車体３側方へ向け開き、車体３重心位置がサブカッター６側へ移動しても、その重心移動による車体３左右バランスの悪化を広幅の前輪１で確実に支持するので、両後輪幅Ｗ２を狭く配置しても車体３の左右バランスが崩れてサブカッター６が接地したり、刈高さが変わったりすることがなく安定した草刈り作業が可能である。
更に、前方カッター５ｂ後方に形成した空間部Ｂと後輪２外側部Ａにサブカッター６が収納可能であるため、サブカッター６長さを長く構成することができ、メインカッター５とサブカッター６により、更に広い刈幅での作業が可能となる。 According to the first aspect of the present invention, a main cutter 5 and a sub-cutter 6 that can be opened and closed toward one side of the traveling vehicle body 3 are provided on the abdomen of the traveling vehicle body 3 that suspends the pair of left and right front wheels 1 and rear wheels 2. In addition, both the rear wheel width W2 are arranged narrower than the both front wheel widths W1, and the rear large-diameter cutter 5a is arranged with different front and rear mounting positions, and the large-diameter cutter 5a is substantially the same diameter or a small-diameter front cutter. A main cutter 5 comprising 5b is provided, a space B is formed behind the front cutter 5b, and substantially the entire sub-cutter 6 is directed toward the outer portion 2 of the rear wheel 2 within the front wheel width W1 with the front cutter 5b as the center. Since it is configured to be stowable, the space on the outer side A of the rear wheel 2 can be effectively used, and the sub cutter 6 can be stowed with as few protrusions as possible to the side of the vehicle body 3 as much as possible. Sub-cutter when loading It never gets in the way.
When the sub-cutter 6 is opened to the side of the vehicle body 3, the center of gravity of the vehicle body 3 moves to the sub-cutter 6 side, but in the present invention, the front wheels having both front wheel widths W1 wider than both rear wheel widths W2. 1 Even if the sub-cutter 6 is opened toward the side of the vehicle body 3 around the front cutter 5b provided in the vicinity of the vehicle 1 and the center of gravity of the vehicle body 3 moves to the side of the sub-cutter 6, the lateral balance of the vehicle body 3 is deteriorated due to the movement of the center of gravity. Since it is securely supported by the wide front wheel 1, even if both rear wheel widths W2 are arranged narrowly, the left and right balance of the vehicle body 3 is lost and the sub-cutter 6 is grounded and the cutting height does not change and is stable. Mowing work is possible.
Furthermore, since the sub cutter 6 can be stored in the space B formed at the rear of the front cutter 5b and the outer portion A of the rear wheel 2, the length of the sub cutter 6 can be increased, and the main cutter 5 and the sub cutter 6 can be configured. Thus, it is possible to work with a wider cutting width.

請求項２に記載の発明は、左右一対の前輪１及び後輪２を懸架する走行車体３の腹部にメインカッター５と、走行車体３の一側方へ向け開閉可能のサブカッター６とを設けるに、前後取付位置を異ならせて配置した後方大径カッター５ａと、該大径カッター５ａと略同径乃至小径の前方カッター５ｂからなり、且つ、大径カッター５ａを車体３の一側方へ偏倚して配置するメインカッター５を設け、該前方カッター５ｂ後方に空間部Ｂを形成するとともに、前方カッター５ｂを中心にサブカッター６を空間部Ｂへ向け収納可能に構成してあるので、大径カッター５ａと前方カッター５ｂとの配置により空間部Ｂが更に広く形成される。 According to the second aspect of the present invention, a main cutter 5 and a sub-cutter 6 that can be opened and closed toward one side of the traveling vehicle body 3 are provided on the abdomen of the traveling vehicle body 3 that suspends the pair of left and right front wheels 1 and rear wheels 2. in the rear large-diameter cutter 5a disposed at different longitudinal mounting position, Ri front cutter 5b Tona of the large diameter cutters 5a substantially equal径乃optimum diameter, and, one side of the large diameter cutter 5a vehicle body 3 the main cutter 5 which arranged offset to provided to form a space B behind the front cutter 5b, since the sub-cutter 6 around the front cutter 5b are accommodated capable configuration toward the space portion B, The space B is further formed wider by the arrangement of the large-diameter cutter 5a and the front cutter 5b.

次に、本発明について図面を参照に説明する。本発明の自走式乗用草刈機は走行車体３の前方に左右一対の前輪１と、後方に左右一対の後輪２を備え、左右両前輪幅Ｗ１に対し両後輪幅Ｗ２を狭く配置させてある。走行車体３の前後略中央には、操縦者が座るシート１０を設け、その前方に前輪１を操舵するハンドル１１を設けてある。該シート１０後方にはエンジン１２を配設し、エンジン１２上方をカバー１３で覆ってある。カバー１３内方には、エンジン１２の他に燃料タンク１４、排気マフラー１５等のエンジン関連部品を収納してある。
エンジン１２は出力軸１６を垂下したバーチカル型であり、該出力軸１６に取着のエンジンプーリ１７によって走行駆動及び回転刃駆動を行う。エンジンプーリ１７とその後方のプーリ１８にはＶベルト１９を巻き掛け、エンジン１２の駆動力はＨＳＴ（油圧無段変速装置）２０に伝達され、該ＨＳＴ２０と一体的なトランスミッション２１を介して後輪２へ伝達される。 Next, the present invention will be described with reference to the drawings. The self-propelled riding mower according to the present invention includes a pair of left and right front wheels 1 in front of the traveling vehicle body 3 and a pair of left and right rear wheels 2 in the rear, and the rear wheel width W2 is arranged narrower than the left and right front wheel widths W1. It is. A seat 10 on which a driver sits is provided at the front and rear center of the traveling vehicle body 3, and a handle 11 for steering the front wheels 1 is provided in front of the seat 10. An engine 12 is disposed behind the seat 10 and an upper portion of the engine 12 is covered with a cover 13. Inside the cover 13, in addition to the engine 12, engine-related parts such as a fuel tank 14 and an exhaust muffler 15 are accommodated.
The engine 12 is a vertical type in which an output shaft 16 is suspended, and travel and drive blades are driven by an engine pulley 17 attached to the output shaft 16. A V-belt 19 is wound around the engine pulley 17 and a pulley 18 behind the engine pulley 17, and the driving force of the engine 12 is transmitted to an HST (hydraulic continuously variable transmission) 20, and a rear wheel is connected via a transmission 21 integrated with the HST 20. 2 is transmitted.

前輪１と後輪２間の走行車体３下方腹部には、任意の高さに昇降させることの可能なメインカッター５を設けてある。メインカッター５は、走行車体３腹部の右後部に大径カッター５ａを設け、左前部の左側前輪１に接近させた位置に前方カッター５ｂを設け、該大径カッター５ａ及び前方カッター５ｂ上方をカバー２２で覆った構成である。大径カッター５ａ及び前方カッター５ｂ上方には各々を回転駆動するためのプーリ２３，２４を取着し、エンジン１２のプーリ１８の駆動がＶベルト２５，２６によって伝達される。又、プーリ１８とプーリ２３との間に巻き掛けたＶベルト２５にはクラッチ機構を介在し、シート１０左側方の操作ボックス２７に設けたクラッチレバー２８を前後方向に入、切操作することによって、メインカッター５の駆動を断続可能に構成してある。尚、これらの伝動形態についてはＶベルト構成に限定するものではなく、軸やギヤ、チェン等を用いた伝動構成でもよい。 A main cutter 5 that can be raised and lowered to an arbitrary height is provided at the lower abdomen of the traveling vehicle body 3 between the front wheel 1 and the rear wheel 2. The main cutter 5 is provided with a large diameter cutter 5a at the right rear portion of the abdomen of the traveling vehicle body 3, a front cutter 5b is provided at a position approaching the left front wheel 1 at the left front portion, and covers the upper portion of the large diameter cutter 5a and the front cutter 5b. 22 is covered. Pulleys 23 and 24 for rotationally driving each of them are attached above the large-diameter cutter 5a and the front cutter 5b, and the drive of the pulley 18 of the engine 12 is transmitted by V-belts 25 and 26. Further, a clutch mechanism is interposed in the V-belt 25 wound between the pulley 18 and the pulley 23, and a clutch lever 28 provided in an operation box 27 on the left side of the seat 10 is inserted in the front-rear direction and turned off. The main cutter 5 can be driven intermittently. These transmission modes are not limited to the V-belt configuration, but may be a transmission configuration using a shaft, a gear, a chain, or the like.

大径カッター５ａと前方カッター５ｂは帯板形状のカッター５ａ，５ｂを略水平回転させることで両前輪幅Ｗ１と略同幅の刈幅で草を刈取ることができる。両カッター５ａ，５ｂは各々の先端回転軌跡を離間させ、草刈作業時に上下に大きく撓む大径カッター５ａが前方カッター５ｂと接触しないようにしてある。又、両カッター５ａ，５ｂを離間させていることによる草の刈残しがないよう、各々の内方を前後延長線方向においては重合させて配置してある。
前方カッター５ｂには、この前方カッター５ｂを中心に車体３側方へ開閉可能のサブカッター６を設けてある。図１、図２に示すのはサブカッター６を２連の水平回転するカッター６ａで構成したものであり、サブカッター６を車体３側方へ開けばメインカッター５の刈幅よりも広い刈幅での草刈作業が可能となる。尚、サブカッター６のカッター６ａは単一でも良く、３連、４連に並設しても良い。
車体３腹部の右後部に大径カッター５ａと、左前部に前方カッター５ｂを配置し、左側前輪１に前方カッター５ｂを接近させると、サブカッター６を車体３左側方へ開き、車体３の重心位置がサブカッター６を開いた方向へ移動しても、幅広の前輪１がサブカッター６の重さを充分に支持し、左右バランスが崩れ車体３が傾きサブカッター６が接地したり、刈高さが変わったりすることがなく安定した草刈作業をすることができる。
又、両前輪幅Ｗ１よりも両後輪幅Ｗ２を幅狭に配置させると、前方カッター５ｂの後方に空間部Ｂと両後輪２外側部Ａにサブカッター６の収納スペースを形成することができる。この収納スペースにサブカッター６を収納すれば、サブカッター６の略全体を車体３腹部に収納させることが可能であり、収納時には、サブカッター６が側方へ大きく突出することがなく、トラック等への積み込みを容易に行うことができる。
更に、左側後輪２の外側部Ａに向けサブカッター６を延長させることが可能であり、広い刈幅の草刈作業を行うことができる。 The large-diameter cutter 5a and the front cutter 5b can cut grass with a cutting width that is substantially the same width as the front wheel width W1 by rotating the strip-shaped cutters 5a and 5b substantially horizontally. Both cutters 5a and 5b are arranged so that their tip rotation trajectories are separated from each other so that the large-diameter cutter 5a that greatly bends up and down during the mowing operation does not come into contact with the front cutter 5b. Further, the inner sides of the cutters 5a and 5b are overlapped in the front-rear extension line direction so that there is no uncut grass due to the spacing between the cutters 5a and 5b.
The front cutter 5b is provided with a sub-cutter 6 that can be opened and closed to the side of the vehicle body 3 around the front cutter 5b. FIG. 1 and FIG. 2 show that the sub-cutter 6 is composed of two series of horizontally-rotating cutters 6a. If the sub-cutter 6 is opened to the side of the vehicle body 3, the cutting width wider than the cutting width of the main cutter 5 is shown. Mowing work at can be done. In addition, the cutter 6a of the sub cutter 6 may be single, and may be arranged in parallel by three or four.
A large diameter cutter 5a in the right rear portion of the vehicle body 3 the abdomen, the front cutter 5b arranged left front portion and to approach the front cutter 5b on the left front wheel 1, to open the sub-cutter 6 to the vehicle body 3 left side, the center of gravity of the vehicle body 3 Even if the position moves in the direction in which the sub-cutter 6 is opened, the wide front wheel 1 sufficiently supports the weight of the sub-cutter 6, the left-right balance is lost, the vehicle body 3 is tilted, the sub-cutter 6 is grounded, and the cutting height Stable mowing work can be done without any change.
Further, when both rear wheel widths W2 are arranged narrower than both front wheel widths W1, a storage space for the sub-cutter 6 can be formed at the rear of the front cutter 5b and at the outer part A of both the rear wheels 2. it can. If the sub-cutter 6 is stored in this storage space, it is possible to store substantially the entire sub-cutter 6 in the abdomen of the vehicle body 3. During storage, the sub-cutter 6 does not protrude greatly to the side, and a truck or the like Can be easily loaded.
Furthermore, the sub-cutter 6 can be extended toward the outer side A of the left rear wheel 2, so that a mowing operation with a wide cutting width can be performed.

サブカッター６への伝動は、前方カッター５ｂのプーリ２４からＶベルト２９，３０により行い、Ｖベルト２６，２９，３０はテンション３１によって常時張った状態に保持してある。従って、クラッチレバー２８を入操作すると、全てのカッター５ａ，５ｂ，６ａが同方向に回転し、刈草を車体３の右側へ搬送し、車体３の右側後方Ｃへ向け大部分を排出する。尚、サブカッター６と前方カッター５ｂとの間にクラッチ機構を介在し、サブカッター６を収納した際にはサブカッター６への伝動を切る構成とすることが好ましい。この排出口３１後方の後輪２は車体３内方に位置してあり、右側後輪２の外側部Ａに大きく開放した排出口３１は刈草をスムーズに排出できるとともに、後輪２が刈草を踏み散らかすことがなく、刈跡がきれいである。 Transmission to the sub-cutter 6 is performed by the V belts 29 and 30 from the pulley 24 of the front cutter 5 b, and the V belts 26, 29, and 30 are always held in tension by a tension 31. Accordingly, when the clutch lever 28 is turned on, all the cutters 5a, 5b, and 6a rotate in the same direction, convey the cut grass to the right side of the vehicle body 3, and discharge most of it toward the rear right side C of the vehicle body 3. It is preferable that a clutch mechanism is interposed between the sub-cutter 6 and the front cutter 5b so that transmission to the sub-cutter 6 is cut off when the sub-cutter 6 is stored. The rear wheel 2 behind the discharge port 31 is located inside the vehicle body 3, and the discharge port 31 that is largely open to the outer side A of the right rear wheel 2 can smoothly discharge the grass and the rear wheel 2 can remove the grass. There is no mess and the cuts are clean.

サブカッター６は開閉移動の中心を車体３に支持することも可能であるが、本実施の形態では、メインカッター５とサブカッター６を一体的に昇降可能に構成し、草の刈高さを調整することができる。その具体構成は、メインカッター５上方のカバー２２とその上方の車体３との間を２対の平行リンクロッド３２，３３で連結し、カバー２２上面に枢支した昇降ロッド３４を上下動させることで一体的に昇降する。尚、刈高さの調整は、操作ボックス２７に設けた調整レバー３５で調整し、昇降ロッド３４の昇降駆動については、手動レバーやアクチュエータ、モータ等を用いた手段によって行うことが可能である。   Although the sub cutter 6 can support the center of the opening and closing movement on the vehicle body 3, in this embodiment, the main cutter 5 and the sub cutter 6 are configured to be able to move up and down integrally, and the cutting height of the grass is increased. Can be adjusted. Specifically, the cover 22 above the main cutter 5 and the vehicle body 3 above the upper cutter 22 are connected by two pairs of parallel link rods 32 and 33, and the lifting rod 34 pivotally supported on the upper surface of the cover 22 is moved up and down. Ascend and descend as a unit. The cutting height is adjusted by an adjustment lever 35 provided in the operation box 27, and the lifting / lowering drive of the lifting / lowering rod 34 can be performed by means using a manual lever, an actuator, a motor, or the like.

サブカッター６の前方には障害物を検知する検知杆３６を設けてある。サブカッター６とメインカッター５のカバー２２とはシリンダーで連結（図示せず）してあり、シリンダーを伸縮させることにより、前方カッター５ｂを中心にサブカッター６を開閉可能に構成してある。図３は障害物となる樹木３７がサブカッター６前方に接触した際のサブカッター６の回避作動状態を示したものである。前進走行の草刈作業中に、車体３側方へ開いた状態のサブカッター６前方の検知杆３６に樹木３７が接触し、検知杆３６が後方へ押されると、サブカッター６を開方向に押圧しているシリンダーの圧力が抜け、車体３を更に前進させることによってサブカッター６が樹木３７に沿って後方へ回動しながら樹木３７を回避する。検知杆３６が樹木３７と非接触状態まで進むと、再びシリンダーに圧力が加わり、サブカッター６を開方向に押圧して開状態に復起させる。この構成で、樹木３７が車体３側へ接近した状態、すなわち前輪１に樹木３７を接近させて草刈作業を行った場合でも、サブカッター６は破損することがなく、樹木３７に傷を付けることもない。又、サブカッター６の略全体を車体３腹部の両前輪幅Ｗ１に収納可能なので、狭い場所での草刈作業も容易に行うことができ、草刈機運搬時の車両への積み込み作業を容易に行え、又、倉庫内保管時にもサブカッター６が邪魔にならない。 A detection rod 36 for detecting an obstacle is provided in front of the sub cutter 6. The sub cutter 6 and the cover 22 of the main cutter 5 are connected by a cylinder (not shown), and the sub cutter 6 can be opened and closed around the front cutter 5b by expanding and contracting the cylinder. FIG. 3 shows an avoidance operation state of the sub-cutter 6 when the tree 37 serving as an obstacle contacts the front of the sub-cutter 6. During the forward-moving mowing operation, when the tree 37 comes into contact with the detection rod 36 in front of the sub-cutter 6 that is open to the side of the vehicle body 3 and the detection rod 36 is pushed backward, the sub-cutter 6 is pushed in the opening direction. When the pressure of the cylinder is released and the vehicle body 3 is further advanced, the sub cutter 6 avoids the tree 37 while rotating backward along the tree 37. When the detection rod 36 advances to the non-contact state with the tree 37, pressure is applied to the cylinder again, and the sub-cutter 6 is pressed in the opening direction to return to the open state. With this configuration, even when the tree 37 is approaching the vehicle body 3 side, that is, when the tree 37 is approached to the front wheel 1 and the mowing operation is performed, the sub-cutter 6 is not damaged, and the tree 37 is damaged. Nor. Further, since the substantially entire sub-cutter 6 can be stored in the front wheel width W1 of the abdomen of the vehicle body 3, mowing work can be easily performed in a narrow place, and loading work on the vehicle when the mowing machine is transported can be easily performed. Also, the sub-cutter 6 does not get in the way during storage in the warehouse.

図４に示すのは、メインカッター５やサブカッター６の別実施例による構成を示すものである。どの実施例も両前輪幅Ｗ１に対し両後輪幅Ｗ２を狭幅に配置し、前、後輪１，２間の車体３腹部にメインカッター５を設け、車体３側方へ開閉可能のサブカッター６を設けてある。このサブカッター６は何れも後輪２の外側部Ａへ向け収納可能に構成してある。
（ａ）に示すのは、車体３の左右中央部に、車体３幅と略同幅の刈幅で草を刈取ることのできる単一の大径メインカッター５を設け、その外周部にサブカッター６を設けたものである。
（ｂ）に示すのは、メインカッター５を同径３連に構成し、端部のメインカッター５を中心に回動可能のサブカッター６を設けたものである。メインカッター５と１段目のサブカッター３８は同径のものを用いて、部品の共用化を図ってある。又、２段目のサブカッター３９は小径に形成し、後輪２外側部Ａへ収納させることができる。
（ｃ）に示すのは、メインカッター５のカッター５ａ，５ｂを同径とし、前後取付位置を異ならせて配設し、その前側の前方カッター５ｂを中心に３連のサブカッター６を開閉可能に構成したものである。
（ｄ）に示すのは、（ｃ）と同様のメインカッター５を設け、後輪２外側部Ａの両前輪幅Ｗ１内にサブカッター６全体を収納可能にした構成である。 FIG. 4 shows a configuration of another embodiment of the main cutter 5 and the sub cutter 6. In any of the embodiments, both rear wheel widths W2 are narrower than both front wheel widths W1, and a main cutter 5 is provided on the abdomen of the vehicle body 3 between the front and rear wheels 1 and 2 so that the vehicle body 3 can be opened and closed laterally. A cutter 6 is provided. Each of the sub cutters 6 is configured to be retractable toward the outer portion A of the rear wheel 2.
(A) shows that a single large-diameter main cutter 5 capable of cutting grass with a cutting width substantially the same as the width of the vehicle body 3 is provided at the center of the left and right of the vehicle body 3, and a sub A cutter 6 is provided.
In (b), the main cutter 5 is configured to have three identical diameters, and a sub-cutter 6 that can be rotated around the main cutter 5 at the end is provided. The main cutter 5 and the first stage sub-cutter 38 have the same diameter, and the parts are shared. Further, the second stage sub-cutter 39 can be formed in a small diameter and stored in the outer portion A of the rear wheel 2.
(C) shows that the cutters 5a and 5b of the main cutter 5 have the same diameter, are arranged with different front and rear mounting positions, and can open and close the three sub-cutters 6 around the front cutter 5b on the front side. It is configured.
(D) shows a configuration in which the same main cutter 5 as that in (c) is provided, and the entire sub cutter 6 can be accommodated in the front wheel width W1 of the outer portion A of the rear wheel 2.

全体平面図。Overall plan view. 全体側面図。Overall side view. サブカッターの作動を示す作動図。The operation diagram which shows the operation | movement of a sub cutter. 別実施例を示す要部平面図。The principal part top view which shows another Example.

符号の説明Explanation of symbols

１ 前輪
２ 後輪
３ 車体
５ メインカッター
５ａ 大径カッター
５ｂ 前方カッター
６ サブカッター
Ａ 外側部
Ｂ 空間部 DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Car body 5 Main cutter 5a Large diameter cutter 5b Front cutter 6 Sub cutter A Outer part B Space part

Claims (2)

左右一対の前輪（１）及び後輪（２）を懸架する走行車体（３）の腹部にメインカッター（５）と、走行車体（３）の一側方へ向け開閉可能のサブカッター（６）とを設けるに、両前輪幅（Ｗ１）に対し両後輪幅（Ｗ２）を幅狭に配置し、前後取付位置を異ならせて配置した後方大径カッター（５ａ）と、該大径カッター（５ａ）と略同径乃至小径の前方カッター（５ｂ）からなるメインカッター（５）を設け、該前方カッター（５ｂ）後方に空間部（Ｂ）を形成するとともに、前方カッター（５ｂ）を中心にサブカッター（６）の略全体を両前輪幅（Ｗ１）内の後輪（２）外側部（Ａ）へ向け収納可能に構成してなる自走式乗用草刈機。 A main cutter (5) on the abdomen of the traveling vehicle body (3) that suspends the pair of left and right front wheels (1) and rear wheels (2), and a sub-cutter (6) that can be opened and closed toward one side of the traveling vehicle body (3) And a rear large diameter cutter (5a) in which both rear wheel widths (W2) are arranged narrowly with respect to both front wheel widths (W1) and the front and rear mounting positions are different, and the large diameter cutter ( 5a) is provided with a main cutter (5) consisting of a front cutter (5b) having a diameter substantially the same as or smaller than that of the front cutter (5b). A space (B) is formed behind the front cutter (5b), and the front cutter (5b) is the center. A self-propelled riding mower configured such that substantially the entire sub-cutter (6) can be accommodated toward the rear wheel (2) and the outer portion (A) in both front wheel widths (W1) . 左右一対の前輪（１）及び後輪（２）を懸架する走行車体（３）の腹部にメインカッター（５）と、走行車体（３）の一側方へ向け開閉可能のサブカッター（６）とを設けるに、前後取付位置を異ならせて配置した後方大径カッター（５ａ）と、該大径カッター（５ａ）と略同径乃至小径の前方カッター（５ｂ）からなり、且つ、大径カッター（５ａ）を車体（３）の一側方へ偏倚して配置するメインカッター（５）を設け、該前方カッター（５ｂ）後方に空間部（Ｂ）を形成するとともに、前方カッター（５ｂ）を中心にサブカッター（６）を空間部（Ｂ）へ向け収納可能に構成してなる自走式乗用草刈機。 A main cutter (5) on the abdomen of the traveling vehicle body (3) that suspends the pair of left and right front wheels (1) and rear wheels (2), and a sub-cutter (6) that can be opened and closed toward one side of the traveling vehicle body (3) to provide the door, the rear large-diameter cutter disposed at different longitudinal mounting position (5a), Ri front cutter (5b) Tona having substantially the same径乃optimal diameter and large-diameter cutter (5a), and large-diameter cutter main cutter placing (5a) the vehicle body (3) and biased to one side towards the (5) is provided, said front cutter (5b) space the rear (B) to form a front cutter (5b) A self-propelled riding mower configured so that the sub-cutter (6) can be stored toward the space (B) with a center.
JP2004006173A 2004-01-14 2004-01-14 Self-propelled riding mower Expired - Fee Related JP4324964B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020113777A1 (en) * 2018-12-06 2020-06-11 赵延辉 Folding chassis of lawn mower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009136236A (en) * 2007-12-10 2009-06-25 Atex Co Ltd Riding-type mower
CN106797747A (en) * 2016-12-14 2017-06-06 苏州润弘贸易有限公司 Herbage hay mover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020113777A1 (en) * 2018-12-06 2020-06-11 赵延辉 Folding chassis of lawn mower

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