JPH0478723A - Engine cooling structure of lawn mower - Google Patents
Engine cooling structure of lawn mowerInfo
- Publication number
- JPH0478723A JPH0478723A JP19155190A JP19155190A JPH0478723A JP H0478723 A JPH0478723 A JP H0478723A JP 19155190 A JP19155190 A JP 19155190A JP 19155190 A JP19155190 A JP 19155190A JP H0478723 A JPH0478723 A JP H0478723A
- Authority
- JP
- Japan
- Prior art keywords
- radiator
- rear bonnet
- bonnet
- engine
- fan
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Harvester Elements (AREA)
- Superstructure Of Vehicle (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、機体の前方にモーアを昇降可能に設けるとと
もに、駆動前輪と操向後輪との前後間にエンジン、ラジ
ェータ冷却用ファン、および縦置き型のラジェータをこ
の順に機体前方から後方に向けて配設してあり、かつ、
前記ファンを前方吹き出し型に構成してある乗用型芝刈
機のエンジン冷却構造に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention provides a mower that can be raised and lowered at the front of the aircraft body, and an engine, a radiator cooling fan, and a vertical The stationary radiators are arranged in this order from the front to the rear of the aircraft, and
The present invention relates to an engine cooling structure for a riding lawn mower, in which the fan is of a forward blowing type.
この種の乗用型芝刈機では、エンジンを前後輪間の機体
下腹部に配置して低重心化を図り、安定した走行ができ
るように構成されている。This type of riding lawn mower is configured such that the engine is placed in the lower abdomen between the front and rear wheels to lower the center of gravity and enable stable running.
そして、ラジェータ冷却用ファンは後吹き出しであって
、エンジン周りから外気を導入するのであるが、モーア
によって発生するホコリ等の塵埃を極力吸い込まないよ
うに、エンジン周りを防塵網を施したカバーで覆ってい
た。The radiator cooling fan is a rear blower, which introduces outside air from around the engine, but the area around the engine is covered with a dustproof net to prevent it from sucking in as much dust as possible generated by the mower. was.
しかしながら、前記防塵網は、塵埃の多く舞う地表面近
くに位置しているので、防塵機能上その目合いを小さく
せざるを得すその結果、外気の吸入面積が不足しがちで
吸入抵抗も多いため、冷却性能を充分にすることが難し
く改善の余地があった。However, since the dustproof net is located near the ground surface where there is a lot of dust, its mesh size has to be made small in order to prevent dust.As a result, the suction area for outside air tends to be insufficient and there is a lot of suction resistance. Therefore, it was difficult to achieve sufficient cooling performance, and there was room for improvement.
本発明は上記不都合を解消せんとする点に目的を有する
ものである。An object of the present invention is to solve the above-mentioned disadvantages.
上記目的を達成するために本発明は、冒頭に記載した乗
用型芝刈機のエンジン冷却構造において、機体前部の操
縦部の後側位置に、ラジェータの上部を覆う状態の後部
ボンネットを設け、この後部ボンネットの前部、および
エンジン配設部位の夫々にファンに対する外気取入口を
設けてあることを特徴とする。In order to achieve the above object, the present invention provides an engine cooling structure for a riding lawn mower described at the beginning, in which a rear bonnet that covers the upper part of the radiator is provided at a position behind the control section at the front of the machine body. It is characterized in that an outside air intake port for the fan is provided at the front part of the rear bonnet and at the engine installation site.
また、後部ボンネットの外気取入部とラジェータ上部と
の間となる状態で、機体に搭載される油圧装置に対する
オイルクーラを後部ボンネットに内装してあると好都合
である。Further, it is advantageous if an oil cooler for a hydraulic system mounted on the aircraft body is housed in the rear bonnet between the outside air intake part of the rear bonnet and the upper part of the radiator.
すなわち請求項1.の構成によれば外気の取入を、エン
ジン周りのみならず後部ボンネット前面からも可能とし
て吸入部を増加したことにより、必要な風量を確保する
ことが可能になるとともに、操縦部の後側に位置する後
部ボンネット前面部位は、地表面から上方へ遠ざかって
おり、かつ、操縦部がモーアで生じる塵埃に対する遮蔽
板的作用を発揮することによって、後部ボンネット前面
に設ける防塵網の目合いを比較的荒いものとして吸入抵
抗を小にすることができる。つまり、エンジン部位から
の吸入に比べて吸入効率を改善することができる。That is, claim 1. With this configuration, outside air can be taken in not only from around the engine but also from the front of the rear bonnet, and by increasing the intake area, it is possible to secure the necessary air volume, and it is possible to take in outside air not only from around the engine but also from the front of the rear bonnet. The front part of the rear bonnet is located away upward from the ground surface, and the control section acts as a shield against dust generated by the mower, making the mesh of the dustproof mesh on the front of the rear bonnet relatively small. As it is rough, the suction resistance can be reduced. In other words, the intake efficiency can be improved compared to intake from the engine part.
また、請求項Zの構成によれば後部ボンネット前面から
の成人外気の流れを利用してオイルクーラを効率的に冷
却可能となる。Further, according to the structure of claim Z, the oil cooler can be efficiently cooled by using the flow of adult outside air from the front surface of the rear bonnet.
従って請求項1.記載の冷却構造では、機体後部の保護
および外観向上の図れる後部ボンネットを有効利用して
、効率良く単位時間当りの取込み外気量を増加でき、エ
ンジン冷却性能を向上し得た。Therefore, claim 1. In the described cooling structure, the rear bonnet, which protects the rear part of the fuselage and improves its appearance, can be effectively used to efficiently increase the amount of outside air taken in per unit time, thereby improving engine cooling performance.
請求項2.記載の冷却構造では、請求項1.による効果
に加えて、油圧装置の作動油の冷却性能も効率良(向上
できた。Claim 2. In the cooling structure described in claim 1. In addition to the effects of this, the cooling performance of the hydraulic oil in the hydraulic system was also efficient (improved).
第1図に、機体前方に昇降自在なモーア(M)を設け、
機体前部に操縦部(1)を、後部に後部ボンネット(2
)を夫々備えるとともに、駆動前輪(3)操向後輪(4
)を設けて走行可能とした乗用型芝刈機が示されている
。In Figure 1, a mower (M) that can be raised and lowered is installed at the front of the aircraft.
The control unit (1) is located at the front of the aircraft, and the rear bonnet (2) is located at the rear.
), as well as a driving front wheel (3) and a steering rear wheel (4).
) is shown, which shows a riding lawnmower that can be driven.
左右の前輪(3)、 (3)は機体フレーム(F)の前
端部に固定されたミッションケース(5)に軸支される
とともに、左右一対の後輪(4)、 (4)は機体フレ
ーム(F)後端部に、縦軸芯(P)周りで旋回操作自在
に取付けられている。第3図にも示すように、前フレー
ム(6)と後フレーム(7)とから成り、側面視段形状
で左右一対の主フレーム(8)、 (8)と下部フレー
ム(9)とから機体フレーム(F)が構成されている。The left and right front wheels (3), (3) are pivotally supported by a mission case (5) fixed to the front end of the fuselage frame (F), and the pair of left and right rear wheels (4), (4) are supported by the fuselage frame (F). (F) It is attached to the rear end so that it can be rotated freely around the vertical axis (P). As shown in Figure 3, the aircraft consists of a front frame (6) and a rear frame (7), and has a stepped shape when viewed from the side, consisting of a pair of left and right main frames (8), (8) and a lower frame (9). A frame (F) is constructed.
一対の主フレーム(8)、 (8)の前端どうしを前部
フレーム(10)で連結し、これにミッションケース(
5)をボルト止めして吊設するとともに、このミッショ
ンケース(5)の下部に左右一対の支持フレーム(11
)。The front ends of the pair of main frames (8), (8) are connected by the front frame (10), and the mission case (
5) is bolted and suspended, and a pair of left and right support frames (11) are installed at the bottom of this mission case (5).
).
(11)の前部をボルト連結し、これら支持フレーム(
11)、(11) $後端を連結する正面視U字状のパ
イプフレーム(12)を、後フレーム(7)、 (7)
夫々にボルト止めしてある。そして、バイブフレーム(
12)と両支持フレーム(11)、 (11)から構成
される下部フレーム(19)に、エンジン(E)を、後
方吹き出しの冷却ファン(23)、およびラジェータ(
21)を搭載し、このエンジン(E))の動力がミッシ
ョンケース(5)のH3T(13)に伝達される。The front parts of (11) are connected with bolts, and these support frames (
11), (11) $ Connect the rear end of the pipe frame (12), which is U-shaped in front view, to the rear frame (7), (7)
They are each bolted together. And the vibe frame (
The engine (E) is mounted on the lower frame (19), which is composed of the lower frame (12) and both support frames (11), (11), and the rear-blowing cooling fan (23) and the radiator (
21), and the power of this engine (E)) is transmitted to the H3T (13) of the mission case (5).
また、ミッションケース(5)には操縦部(1)のハン
ドル(14)や、ステップ(15)を支持するフロアフ
レーム(16)をボルト止めしてある。Further, a floor frame (16) that supports the handle (14) of the control section (1) and the step (15) is bolted to the mission case (5).
前記支持フレーム(11)、 (11)には取付部材(
17)、 (17)を介してエンジン(E)を搭載する
が、それら取付部材(17)、 (17)に下カバ一部
材(18)。The support frames (11), (11) are provided with mounting members (
The engine (E) is mounted through the mounting members (17) and (17), and the lower cover member (18) is attached to these mounting members (17) and (17).
(18)が固定され、これら下カバ一部材(18)、
(18)と後フレーム(7)、 (7)とに亘ってサイ
ドカバー(19)、 (19)を着脱自在に取付けであ
る。すなわち、サイドカバー(19)と後フレーム(7
)とをビンと孔により連結し、サイドカバー(19)と
下カバ一部材(18)とを蝶ボルト(20)によって連
結してあるとともに、冷却風の外気取入部となる防塵網
(エキスバンドメタル) (19a)を枠体(19b)
に固着してサイドカバー (19)を構成してある。(18) are fixed, and these lower cover members (18),
Side covers (19), (19) are removably attached to (18) and rear frames (7), (7). That is, the side cover (19) and the rear frame (7)
) are connected by bottles and holes, and the side cover (19) and lower cover part (18) are connected by butterfly bolts (20). metal) (19a) to the frame (19b)
The side cover (19) is configured by being fixed to the side cover (19).
左右のサイドカバー(19)、 (19)の前端どうし
を前カバー(25)で連結し、かつ、各後端は冷却ファ
ン(23)のファン枠(24)に連結してファン(23
)の吸入側をほぼ密閉状としてあり、防塵網(19a)
のみから外気を取込可能にしてある。The front ends of the left and right side covers (19), (19) are connected to each other by the front cover (25), and the rear ends of each are connected to the fan frame (24) of the cooling fan (23).
) is almost sealed, and there is a dustproof screen (19a).
It is possible to take in outside air from the outside.
次に、後部ボンネット(2)部について説明する。Next, the rear bonnet (2) section will be explained.
第1図、第2図に示すように、機体前部の操縦部(1)
の後側位置に、ラジェータ(21)の上部を覆う状態の
後部ボンネット(2)を設け、この後部ボンネット(2
)の前部にもファン(23)に対する外気取入部(26
)を設けてある。As shown in Figures 1 and 2, the control section (1) at the front of the aircraft
A rear bonnet (2) that covers the upper part of the radiator (21) is provided at the rear position.
) also has an outside air intake part (26) for the fan (23).
) is provided.
すなわち、後フレーム(7)よりも上方に突出したラジ
ェータ(21)上部、後部の燃料タンク(27)、およ
びラジェータ(21)上部の前側にH3T(13)の作
動油に対するオイルクーラ(28)を立設し、これらを
覆う後部ボンネット(2)をその後部に設けた横軸心(
X)周りで開閉自在に装着してあるとともに、該ボンネ
ット(2)の前壁(29)を防塵網で構成してあり、シ
ート(30)後面との空間部より外気を吸入可能である
。前記シート(30)は前側の横軸心(Y)で開閉自在
である。That is, an oil cooler (28) for the hydraulic oil of the H3T (13) is installed in the upper part of the radiator (21) that protrudes above the rear frame (7), the rear fuel tank (27), and the front side of the upper part of the radiator (21). The horizontal axis (
The front wall (29) of the bonnet (2) is made of a dustproof net, and outside air can be sucked in from the space between it and the rear surface of the seat (30). The seat (30) can be opened and closed about the horizontal axis (Y) on the front side.
後部ボンネット(2)を閉じた状態で、その内部を前後
に仕切る仕切壁(31)をラジェータ(21)部位に設
けてあるとともに、この仕切壁(31)にエアクリーナ
(22)を前後に貫通して支持してある。A partition wall (31) is provided at the radiator (21) to partition the inside of the rear bonnet (2) into front and rear when the rear bonnet (2) is closed. I support it.
エアクリーナ(22)の吸入口(32)とエンジン(E
)へのアウトレット(33)とを前室(34)に、かつ
、異物排出部(35)を後室(36)に夫々臨むように
エアクリーナ(22)を配設してある。The intake port (32) of the air cleaner (22) and the engine (E
) The air cleaner (22) is arranged so that the outlet (33) to the front chamber (34) faces the front chamber (34), and the foreign matter discharge part (35) faces the rear chamber (36).
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る乗用型芝刈機のエンジン冷却構造の
実施例を示し、第1図は芝刈機の全体側面図、第2図は
エンジン搭載部を示す断面正面図、第3図は機体フレー
ムの構造を示す斜視図である。
(1)・・・・・・操縦部、(2)・・・・・・後部ボ
ンネット、(3)・・・・・・前輪、(4)・・・・・
・後輪、(13)・・・・・・油圧装置、(19a)、
(26)・・・・・・外気取入口、(21)・・・・
・・ラジェータ、(23)・・・・・・冷却用ファン、
(28)・・・・・・オイルクーラ。The drawings show an embodiment of the engine cooling structure for a riding lawn mower according to the present invention, in which Fig. 1 is an overall side view of the lawn mower, Fig. 2 is a sectional front view showing the engine mounting section, and Fig. 3 is a machine frame. FIG. (1)...Control unit, (2)...Rear bonnet, (3)...Front wheel, (4)...
・Rear wheel, (13)...Hydraulic system, (19a),
(26)...Outside air intake, (21)...
...Radiator, (23) ... Cooling fan,
(28)・・・Oil cooler.
Claims (1)
もに、駆動前輪(3)と操向後輪(4)との前後間にエ
ンジン(E)、ラジエータ冷却用ファン(23)、およ
び縦置き型のラジエータ(21)をこの順に機体前方か
ら後方に向けて配設してあり、かつ、前記ファン(23
)を前方吹き出し型に構成してある乗用型芝刈機のエン
ジン冷却構造であって、機体前部の操縦部(1)の後側
位置に、前記ラジエータ(21)の上部を覆う状態の後
部ボンネツト(2)を設け、この後部ボンネツト(2)
の前部、および前記エンジン(E)配設部位の夫々に前
記ファン(23)に対する外気取入口(26)、(19
a)を設けてある乗用型芝刈機のエンジン冷却構造。 2、前記後部ボンネツト(2)の外気取入部(26)と
前記ラジエータ(21)上部との間となる状態で、機体
に搭載される油圧装置(13)に対するオイルクーラ(
28)を前記後部ボンネツト(2)に内装してある請求
項1記載の乗用型芝刈機のエンジン冷却構造。[Claims] 1. A mower (M) is provided in front of the aircraft so that it can be raised and lowered, and an engine (E) and a radiator cooling fan ( 23) and a vertical radiator (21) are arranged in this order from the front to the rear of the aircraft, and the fan (23) is arranged in this order from the front to the rear of the aircraft.
) is a front blow-out type engine cooling structure for a riding lawn mower, the engine cooling structure being a rear bonnet that covers the upper part of the radiator (21) at a position behind the control section (1) at the front of the machine body. (2), and this rear bonnet (2)
and outside air intake ports (26) and (19) for the fan (23) at the front of the engine (E) and at the engine (E) installation site, respectively.
An engine cooling structure for a riding lawn mower equipped with a). 2. The oil cooler (for the hydraulic system (13) mounted on the aircraft) is located between the outside air intake part (26) of the rear bonnet (2) and the upper part of the radiator (21).
28) is installed inside the rear bonnet (2).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19155190A JPH0478723A (en) | 1990-07-18 | 1990-07-18 | Engine cooling structure of lawn mower |
US07/689,197 US5199521A (en) | 1990-07-18 | 1991-04-22 | Lawn mower having passages for engine cooling air |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19155190A JPH0478723A (en) | 1990-07-18 | 1990-07-18 | Engine cooling structure of lawn mower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0478723A true JPH0478723A (en) | 1992-03-12 |
Family
ID=16276561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19155190A Pending JPH0478723A (en) | 1990-07-18 | 1990-07-18 | Engine cooling structure of lawn mower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0478723A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01211420A (en) * | 1988-02-17 | 1989-08-24 | Kubota Ltd | Cooling air intake for radiator in front mower |
-
1990
- 1990-07-18 JP JP19155190A patent/JPH0478723A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01211420A (en) * | 1988-02-17 | 1989-08-24 | Kubota Ltd | Cooling air intake for radiator in front mower |
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