JP4166200B2 - Mower - Google Patents

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Publication number
JP4166200B2
JP4166200B2 JP2004216064A JP2004216064A JP4166200B2 JP 4166200 B2 JP4166200 B2 JP 4166200B2 JP 2004216064 A JP2004216064 A JP 2004216064A JP 2004216064 A JP2004216064 A JP 2004216064A JP 4166200 B2 JP4166200 B2 JP 4166200B2
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dust removal
net
dust
mower
radiator
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JP2006037779A (en
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和夫 鮫島
弘典 土橋
輝郎 島村
義和 戸越
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Kubota Corp
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Kubota Corp
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Priority to JP2004216064A priority Critical patent/JP4166200B2/en
Priority to US11/180,296 priority patent/US7458434B2/en
Priority to FR0507812A priority patent/FR2875376B1/en
Publication of JP2006037779A publication Critical patent/JP2006037779A/en
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Description

本発明は、モーアを連結した走行機体の後部に、ラジエータを前方に位置させた水冷式のエンジンを搭載し、走行機体の前後中間に配置された運転座席の後方からラジエータへの冷却用外気を取り込むよう構成した草刈機に関する。   In the present invention, a water-cooled engine with a radiator positioned in front is mounted on the rear part of a traveling machine body connected to a mower, and the outside air for cooling from the rear of a driver seat arranged in the front and rear of the traveling machine body to the radiator is provided. The present invention relates to a mower configured to capture.

上記草刈機としては、ラジエータの前部に箱形に構成された除塵網を配備して、この除塵網を通過した清浄外気をラジエータに導くよう構成したものが知られている(例えば、特許文献1参照)。
特開2003−154857号公報
As the mower, there is known a mower that is configured to dispose a box-shaped dust removal net at the front of the radiator and guide the clean outside air that has passed through the dust removal net to the radiator (for example, Patent Documents). 1).
JP 2003-154857 A

上記のように構成された草刈機においては、機体全長を短くするためにエンジンを極力前方に位置させて配置しているために、運転座席とラジエータとの間隔は小さいものになり勝ちであり、この間隔に配備される箱型除塵網の吸気面積を大きく確保することが困難なものとなっていた。このために、除塵網を通過する冷却風の風速が早くなり、浮塵の多い作業環境においては浮塵が除塵網に吸引付着されて早期に目詰まり状態になることがあった。 In the mower configured as described above, because the engine is positioned as far as possible in order to shorten the overall length of the aircraft, the distance between the driver's seat and the radiator tends to be small, It has been difficult to secure a large intake area for the box-type dust nets arranged at this interval. For this reason, the wind speed of the cooling air passing through the dust removal net is increased, and in a work environment with a lot of dust floating, the dust floating is attracted and attached to the dust removal net and may become clogged early.

本発明は、このような点に着目してなされたものであって、運転座席とラジエータとの間隔を大きくすることなく除塵網の吸気面積を増大して早期の目詰まりなく連続作業を行えるようにすることを主たる目的としている。 The present invention has been made paying attention to such points, and it is possible to increase the intake area of the dust net without increasing the distance between the driver's seat and the radiator so that continuous work can be performed without early clogging. The main purpose is to make it.

第1の発明、モーアを連結した走行機体の後部に、ラジエータを前方に位置させた水冷式のエンジンを搭載し、走行機体の前後中間に配置された運転座席の後方から前記ラジエータへの冷却用外気を取り込むよう構成した草刈機において、ボンネットを、前記エンジンを覆うエンジンボンネットと、このエンジンボンネットの前側に配備された除塵網とを備えて構成すると共に、前記除塵網を通過した清浄外気を前記ラジエータに導くよう構成し、前記除塵網を、網面で構成された除塵網前面と、網面で構成された除塵網上面と、この除塵網上面につながる網面で構成された右及び左の除塵網側面とを備えて構成してあることを特徴とする。 The first invention, the rear portion of the traveling machine body linked to the mower, cooled radiator mounted water-cooled engine is located in front, from the rear of the driver's seat disposed back and forth in the middle of the traveling machine body to the radiator In a mower configured to take in outdoor air, the bonnet is configured to include an engine bonnet that covers the engine and a dust removal net disposed on the front side of the engine bonnet, and clean outside air that has passed through the dust removal net The dust removing net is configured to be guided to the radiator, and the dust removing net is configured by a dust removing net front constituted by a mesh surface, a dust removing net upper surface constituted by the mesh surface, and a right and left constituted by a mesh surface connected to the dust removing net upper surface. And a dust removing net side surface.

上記構成によると、除塵網の除塵網前面、除塵網上面、並びに、右及び左の除塵網側面を網面で構成することで除塵網全体としての吸気面積を増大することができ、その分、除塵網を通過する冷却風の風速を抑制することができる。 According to the above configuration, the front surface of the dust removal net, the upper surface of the dust removal net, and the side surfaces of the right and left dust removal nets can be configured as a net surface , thereby increasing the intake area of the entire dust removal net. The wind speed of the cooling air passing through the dust net can be suppressed.

従って、第1の発明によると、運転座席とラジエータとの間隔を大ききしなくても除塵網の吸気面積を増大して早期の目詰まりなく連続作業を行うことが可能となった。 Therefore, according to the first aspect of the present invention, it is possible to increase the intake area of the dust removal net and perform continuous work without early clogging without increasing the distance between the driver seat and the radiator.

第2の発明は、上記第1の発明において、
前記除塵網の横側部を前記ラジエータの側部後方にまで延出してあることを特徴とする。
According to a second invention, in the first invention,
A lateral side portion of the dust net is extended to a rear side of the radiator.

上記構成によると、除塵網の後方延出部は運転座席から後方に離れた箇所に位置するので、吸気騒音が運転者に届きにくく、第1の発明の上記効果をもたらすとともに、運転環境を悪化させることがない。   According to the above configuration, since the rearward extension of the dust removal net is located at a position away from the driver's seat, intake noise is difficult to reach the driver, bringing about the effects of the first invention and deteriorating the driving environment. I will not let you.

第3の発明は、上記第2の発明において、
前記除塵網の後方延出部を、エンジンボンネットの側面に切欠き形成した凹部に臨設してあることを特徴とする。
According to a third invention, in the second invention,
The rear extending portion of the dust removing net is provided in a recess formed by cutting out a side surface of the engine bonnet.

上記構成によると、エンジンボンネットの側面の凹部に臨設された除塵網の後方延出部から冷外気を直接に吸引することができ、効率の良い冷却を行うことができる。   According to the said structure, cold external air can be directly attracted | sucked from the back extension part of the dust removal net erected in the recessed part of the side surface of an engine bonnet, and efficient cooling can be performed.

第4の発明は、上記第1〜3のいずれか一つの発明において、
エンジンルームと前記ラジエータの前部とを隔絶する仕切り板を固定配備するとともに、仕切り板の横側部位を後方に延出し、この仕切り板の横側部位に前記除塵網の前記後方延出部を接続してあることを特徴とする。
A fourth invention is the invention according to any one of the first to third inventions,
A partition plate that isolates the engine room from the front portion of the radiator is fixedly arranged, and a lateral side portion of the partition plate is extended rearward, and the rearward extension portion of the dust removing net is provided on the lateral side portion of the partition plate. It is connected.

上記構成によると、エンジンルームの熱気が除塵網に吸引されるのを仕切り板が阻止して効率の良い冷却を行うことができる。   According to the said structure, a partition plate prevents that the hot air of an engine room is attracted | sucked by a dust removal net | network, and can perform efficient cooling.

第5の発明は、上記第1の発明において、
前記除塵網の横側部を前記運転座席の横外側まで延出してあることを特徴とする。
According to a fifth invention, in the first invention,
The lateral side portion of the dust net is extended to the lateral outer side of the driver seat.

上記構成によると、運転座席の後方に配備されるエンジンボンネットを改造することなく、除塵網の吸気面積を拡大することができる。   According to the above configuration, the intake area of the dust removal net can be expanded without remodeling the engine bonnet provided behind the driver seat.

第6の発明は、上記第5の発明において、
前記除塵網の前方延出部の上面を前下がり傾斜させてあることを特徴とする。
In a sixth aspect based on the fifth aspect,
The upper surface of the front extension part of the dust removal net is inclined forward and downward.

上記構成によると、運転座席に着座した運転者の肘が除塵網の前方延出部に接触するようなことなく、除塵網の吸気面積を拡大することができ、第1の発明の上記効果をもたらすとともに、操縦操作性を損なうことがない。   According to the above configuration, the driver's elbow seated on the driver's seat can expand the intake area of the dust removal net without contacting the front extension of the dust removal net, and the above-described effect of the first invention can be achieved. In addition, it does not impair the maneuverability.

図1に本発明に係る草刈機の側面が、また、図2にその平面がそれぞれ示されている。この草刈機は、向き固定の前輪1と操向可能な後輪2を備えた四輪駆動型の走行機体3の前部に、3ブレード型のモーア4が油圧駆動されるリフトアーム5を介して昇降可能に連結して構成されている。   FIG. 1 shows a side view of the mower according to the present invention, and FIG. 2 shows its plane. This mower has a front end of a four-wheel drive type traveling machine body 3 having a front wheel 1 having a fixed orientation and a rear wheel 2 that can be steered, via a lift arm 5 in which a three-blade type mower 4 is hydraulically driven. And are configured to be movable up and down.

前記走行機体3の後部には、ラジエータ6を前方に位置させた水冷式のエンジン7が搭載されて、後部支点a周り上下に揺動開閉可能なエンジンボンネット8で覆われるとともに、走行機体3の前後中間部位に運転座席9およびアーチ形の転倒保護フレーム10が配備され、さらに、走行機体3の前部に後輪2を操向するステアリングハンドル11が配備されており、エンジン7からの出力が機体前部のミッションケース12に入力され、適宜変速されて前輪1に伝達されるとともに、ミッションケース12内で分岐された走行系動力が伝動軸13を介して後輪2に伝達されるようになっている。 A water-cooled engine 7 with a radiator 6 positioned forward is mounted at the rear of the traveling machine body 3 and is covered with an engine bonnet 8 that can swing up and down around the rear fulcrum a. A driver seat 9 and an arch-shaped fall protection frame 10 are provided at the front and rear intermediate parts, and a steering handle 11 for steering the rear wheels 2 is provided at the front part of the traveling body 3. It is input to the transmission case 12 at the front of the machine body, is appropriately shifted and transmitted to the front wheel 1, and the traveling system power branched in the transmission case 12 is transmitted to the rear wheel 2 via the transmission shaft 13. It has become.

本発明は、上記構成の草刈機におけるエンジン冷却構造に特徴を有しており、その例のいくつかを以下に説明する。   The present invention is characterized by the engine cooling structure in the mower having the above-described configuration, and some examples will be described below.

〔第1例〕   [First example]

図3〜6に、エンジン冷却構造の第1例が示されている。図示のように、ラジエータ6とエンジン7との間にはエンジン動力で駆動される冷却ファン15が配備され、運転座席9の後方から外気を吸引してラジエータ6に導くよう構成されるとともに、ラジエータ6の前部には箱型の除塵網16が配備され、この除塵網16を通過して浄化された外気を冷却風としてラジエータ6に吸引供給するようになっている。前記除塵網16は、網面で構成された除塵網前面16Aと、網面で構成された除塵網上面16Bと、この除塵網上面16Bにつながる網面で構成された右及び左の除塵網側面16C,16Cとを備えて構成されている。 3 to 6 show a first example of the engine cooling structure. As shown in the figure, a cooling fan 15 driven by engine power is disposed between the radiator 6 and the engine 7, and is configured to suck outside air from behind the driver seat 9 and guide it to the radiator 6. A box-type dust removal net 16 is provided at the front of 6, and the outside air that has passed through the dust removal net 16 and purified is sucked and supplied to the radiator 6 as cooling air. The dust removal net 16 includes a dust removal net front face 16A constituted by a mesh face, a dust removal mesh upper face 16B constituted by a mesh face, and right and left dust removal mesh side faces constituted by a mesh face connected to the dust removal mesh upper face 16B. 16C and 16C.

前記ラジエータ6の背面には、前記冷却ファン15を囲むファンシュラウド17が設けられるとともに、ボンネット内を前後に区画する仕切り板18がファンシュラウド17に取付けられ、エンジンルーム19の熱気がラジエータ6の前方に逆流することが阻止されている。そして、仕切り板18の左右横側部位18aが、ラジエータ6から後方に突出するように屈曲延出されている。   A fan shroud 17 surrounding the cooling fan 15 is provided on the rear surface of the radiator 6, and a partition plate 18 that divides the inside of the hood into the front and rear is attached to the fan shroud 17. Backflow is prevented. The left and right lateral portions 18 a of the partition plate 18 are bent and extended so as to protrude rearward from the radiator 6.

前記除塵網16の左右両横側部が仕切り板18の形状に対応して後方に延出され、除塵網16の後方延出部16aが仕切り板18の横側部位18aに接続されることで、除塵網16の平面視での全体形状が後向きに開放されたコの字状に形成されて吸気面積の増大が図られている。そして、コの字状に構成された除塵網16の全体横幅はエンジンボンネット8の前部横幅と同等に設定されており、エンジンボンネット8における左右側面の前部に切欠き形成した凹部8aに除塵網16の後方延出部16aが臨設され、後方延出部16aの横外側面から外気が直接吸引されるようになっている。 By left and right lateral sides of the Jochirimo 16 is extended rearward so as to correspond to the shape of the partition plate 18, the rearward extension portion 16a of the Jochirimo 16 is connected to the lateral side portion 18a of the partition plate 18 In addition, the entire shape of the dust removal net 16 in a plan view is formed in a U-shape opened rearward so as to increase the intake area. Then, the entire width of Jochirimo 16 configured in a U-shape is set equal to the front horizontal width of the engine bonnet 8, dividing the concave portion 8a that the notch forming the front of the left and right sides of the engine hood 8 Dust A rearward extending portion 16a of the net 16 is provided so that outside air is directly sucked from the lateral outer surface of the rearward extending portion 16a.

上記のように構成された除塵網16は上方に引き外すことが可能となっており、これによってラジエータ6への注水や除塵網16の清掃が可能となっている。 The dust removal net 16 configured as described above can be pulled upward, so that water can be poured into the radiator 6 and the dust removal net 16 can be cleaned.

なお、前記除塵網16の吸気面積を増大する上からは前記後方延出部16aをできるだけ大きくすることが望ましいが、図7に示すように、仕切り板18の横側部位18aをラジエータ6よりも斜め後方に延出して除塵網16を接続することによっても吸気面積の増大に充分有効となる。 In order to increase the intake area of the dust net 16, it is desirable to make the rear extension 16 a as large as possible. However, as shown in FIG. It is sufficiently effective to increase the intake area by extending diagonally backward and connecting the dust removal net 16.

〔第2例〕   [Second example]

図8,9にエンジン冷却構造の第2例が示されている。この例では前記除塵網16の全体横幅がエンジンボンネット8の前端横幅と同等に設定されるとともに、その左右両横側部が運転座席9の横外側まで延出されて、除塵網16の吸気面積の増大が図られている。また、この除塵網16における前方延出部16bの上面Sが前下がり傾斜されて、運転座席9への乗り降りや着座状態での肘の移動の妨げにならないようになっている。 8 and 9 show a second example of the engine cooling structure. With the overall width of the Jochirimo 16 in this example is set equal to the front horizontal width of the engine bonnet 8, the left and right lateral sides are extended up to the lateral outside of the driver's seat 9, the intake area of Jochirimo 16 The increase of is planned. Further, the upper surface S of the front extension portion 16b in the dust removal net 16 is inclined forward and downward so that it does not interfere with getting on and off the driver's seat 9 or moving the elbow when seated.

草刈機の全体側面図Overall side view of mower 草刈機の全体平面図Overall plan view of mower 冷却用外気取り入れ構造の側面図Side view of outside air intake structure for cooling 冷却用外気取り入れ構造の平面図Plan view of outside air intake structure for cooling 冷却用外気取り入れ構造の背面図Rear view of cooling air intake structure 除塵網の斜視図Perspective view of dust removal net 冷却用外気取り入れ構造の変形例を示す平面図The top view which shows the modification of the external air intake structure for cooling 別実施例の冷却用外気取り入れ構造を備えた草刈機の全体側面図Whole side view of a mower equipped with an outside air intake structure for cooling according to another embodiment 別実施例の冷却用外気取り入れ構造を備えた草刈機の全体平面図Overall plan view of a mower equipped with an outside air intake structure for cooling according to another embodiment.

符号の説明Explanation of symbols

3 走行機体
4 モーア
6 ラジエータ
7 エンジン
8 エンジンボンネット
9 運転座席
16 除塵網
16a 後方延出部
16b 前方延出部
16A 除塵網前面
16B 除塵網上面
16C 除塵網側面
18 仕切り板
18a 横側部位
19 エンジンルーム
s 上面
DESCRIPTION OF SYMBOLS 3 Traveling machine body 4 Moore 6 Radiator 7 Engine 8 Engine bonnet 9 Driver's seat 16 Dust removal net 16a Back extension part 16b Front extension part
16A front of dust net
16B Top surface of dust removal net
16C Dust removal side surface 18 Partition plate 18a Lateral part 19 Engine room s Upper surface

Claims (6)

モーアを連結した走行機体の後部に、ラジエータを前方に位置させた水冷式のエンジンを搭載し、走行機体の前後中間に配置された運転座席の後方から前記ラジエータへの冷却用外気を取り込むよう構成した草刈機において、
ボンネットを、前記エンジンを覆うエンジンボンネットと、このエンジンボンネットの前側に配備された除塵網とを備えて構成すると共に、前記除塵網を通過した清浄外気を前記ラジエータに導くよう構成し、
前記除塵網を、網面で構成された除塵網前面と、網面で構成された除塵網上面と、この除塵網上面につながる網面で構成された右及び左の除塵網側面とを備えて構成してあることを特徴とする草刈機。
A water-cooled engine with a radiator positioned at the front is mounted on the rear of the traveling aircraft connected to the mower, and is configured to take in outside air for cooling to the radiator from the rear of the driver's seat arranged in the middle of the traveling aircraft In the mower
The hood, the engine hood covering the engine, as well as configuration and a deployed dust network in front of the engine hood, configured to direct the clean outside air that has passed through the dust removing network to said radiator,
The dust removal net comprises a dust removal net front constituted by a mesh surface, a dust removal net upper surface constituted by a mesh surface, and right and left dust removal net sides constituted by a mesh surface connected to the dust removal net upper surface. A mower characterized by being constructed .
前記除塵網の横側部を前記ラジエータの側部後方にまで延出してあることを特徴とする請求項1記載の草刈機。   2. The mower according to claim 1, wherein a lateral side portion of the dust net is extended to a rear side of the radiator. 前記除塵網の後方延出部を、エンジンボンネットの側面に切欠き形成した凹部に臨設してあることを特徴とする請求項2記載の草刈機。   The mowing machine according to claim 2, wherein a rearward extending portion of the dust removal net is provided in a recess formed in a side surface of the engine bonnet. エンジンルームと前記ラジエータの前部とを隔絶する仕切り板を固定配備するとともに、仕切り板の横側部位を後方に延出し、この仕切り板の横側部位に前記除塵網の前記後方延出部を接続してあることを特徴とする請求項1〜3のいずれか一項に記載の草刈機。   A partition plate that isolates the engine room from the front portion of the radiator is fixedly installed, and a lateral side portion of the partition plate is extended rearward, and the rearward extension portion of the dust removal net is provided on the lateral side portion of the partition plate. The mower according to claim 1, wherein the mower is connected. 前記除塵網の横側部を前記運転座席の横外側まで延出してあることを特徴とする請求項1記載の草刈機。   The mower according to claim 1, wherein a lateral side portion of the dust net is extended to a lateral outer side of the driver seat. 前記除塵網の前方延出部の上面を前下がり傾斜させてあることを特徴とする請求項5記載の草刈機。   The mower according to claim 5, wherein an upper surface of the front extension portion of the dust net is inclined forward and downward.
JP2004216064A 2004-07-23 2004-07-23 Mower Active JP4166200B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004216064A JP4166200B2 (en) 2004-07-23 2004-07-23 Mower
US11/180,296 US7458434B2 (en) 2004-07-23 2005-07-13 Lawn mower having an engine disposed rearwardly of a driver's seat
FR0507812A FR2875376B1 (en) 2004-07-23 2005-07-22 LAWN MOWER WITH ENGINE HAVING REAR OF THE DRIVER SEAT

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