JP2011251562A

JP2011251562A - Prime mover section structure of working vehicle

Info

Publication number: JP2011251562A
Application number: JP2010124870A
Authority: JP
Inventors: Kazuki Mitsuyama; 和樹光山
Original assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Current assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2011-12-15

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration of cooling efficiency of a radiator and an engine by preventing clogging of a dust preventing filter body, and to improve working efficiency of a working vehicle.SOLUTION: The prime mover section structure of the working vehicle includes a cooling suction fan (33) on an inner side of the radiator (34), and the filter body (39) filtering the outside air sucked by suction action of the suction fan (33) on an outer side of the radiator (34). A rotating type suction duct (49) having a suction port (50) sucking dust deposited on an outer side surface of the filter body (39) is arranged on the outer side of the filter body (39), and a portion in the prime mover section in which a negative pressure is generated by the suction fan (33) and the suction duct (49) are connected with each other through a suction air passage (60).

Description

この発明は、コンバイン等の作業車輌の原動部構造に関するものである。 The present invention relates to a driving part structure of a working vehicle such as a combine.

従来より、コンバイン等の作業車輌の原動部は、ラジエータの内側に吸引ファンを備え、該ラジエータの外側には前記吸引ファンの吸引作用によって吸入される外気を濾過する防塵網を備えた構成である。
しかしながら、作業中に発生する藁屑等の塵埃が、この防塵網の外側面に吸着されてこの濾過孔を塞ぎ、外気の吸入が阻害されてエンジンがオーバーヒートする問題があった。
そこで、下記特許文献１に開示されているように、ラジエータの内側に冷却用の吸引ファンを備え、ラジエータの外側には吸引ファンの吸引作用によって吸入される外気を濾過する円形の防塵網を回転自在に備え、この防塵網の外側面に付着した塵埃を吸い取る吸引口を備えた吸引ダクトをこの防塵網の外側の部位に固定設置し、吸引ファンによって負圧の発生する原動部内の部位と吸引ダクトとを吸引風路で接続した作業車輌の原動部構造が試みられている。
この構造により、防塵網を常時回転駆動しながら、この防塵網の外側面に吸着された藁屑等の塵埃を、吸引ダクトの吸引口から吸い取って除去しようとするものである。 2. Description of the Related Art Conventionally, a driving part of a work vehicle such as a combiner has a configuration in which a suction fan is provided inside a radiator, and a dustproof net that filters outside air sucked by the suction action of the suction fan is provided outside the radiator. .
However, dust such as saw dust generated during the operation is adsorbed on the outer surface of the dust screen and closes the filter hole, thereby obstructing the intake of outside air and causing the engine to overheat.
Therefore, as disclosed in the following Patent Document 1, a cooling suction fan is provided inside the radiator, and a circular dust-proof net that filters outside air sucked by the suction action of the suction fan is rotated outside the radiator. A suction duct equipped with a suction port that sucks up dust adhering to the outer surface of the dust screen is fixedly installed at the outer site of the dust screen, and the suction part and the site in the prime mover where negative pressure is generated An attempt has been made to provide a structure for a driving part of a working vehicle in which a duct is connected by a suction air passage.
With this structure, the dust net is constantly driven to rotate, and dust such as saw dust adsorbed on the outer surface of the dust net is sucked from the suction port of the suction duct to be removed.

特開２０１０−５８６１３号公報JP 2010-58613 A

しかしながら、上述の特許文献１に開示された技術では、防塵網自体を回転させる構造であるため、この防塵網の外周部と、原動部を覆うエンジンカバーの側壁との間の隙間をなくすには、この防塵網を円形に形成せざるを得ない。
一方、原動部を覆うエンジンカバーは、通常、箱型に形成されるため、このエンジンカバーの外側部に防塵網を設ける場合、矩形を呈するエンジンカバーの外側面に対して円形の防塵網を設けることとなる。これにより、エンジンカバーの外側面の隅部には防塵網を設けることができず、エンジンカバーの外側面における外気の吸入面積が小さく制限され、外気の吸入量が低下してエンジンの冷却効率が低下しやすくなる問題がある。 However, in the technique disclosed in Patent Document 1 described above, since the structure is such that the dust screen is rotated, there is no gap between the outer periphery of the dust screen and the side wall of the engine cover that covers the prime mover. This dust net must be formed in a circle.
On the other hand, since the engine cover that covers the prime mover is normally formed in a box shape, when a dustproof net is provided on the outer side of the engine cover, a circular dustproof net is provided on the outer surface of the rectangular engine cover. It will be. As a result, a dust-proof net cannot be provided at the corner of the outer surface of the engine cover, the outside air suction area on the outer surface of the engine cover is limited to a small size, the amount of outside air sucked down, and the engine cooling efficiency is reduced. There is a problem that tends to decrease.

この発明は、上記課題を解決するために、以下の技術的手段を講じる。
請求項１記載の発明は、ラジエータ（３４）の内側に冷却用の吸引ファン（３３）を備え、ラジエータ（３４）の外側には前記吸引ファン（３３）の吸引作用によって吸入される外気を濾過する濾過体（３９）を備えた作業車輌の原動部構造であって、前記濾過体（３９）の外側面に付着した塵埃を吸い取る吸引口（５０）を備えた回転式の吸引ダクト（４９）を該濾過体（３９）の外側の部位に配置し、前記吸引ファン（３３）によって負圧の発生する原動部内の部位と吸引ダクト（４９）とを吸引風路（６０）で接続したことを特徴とする作業車輌の原動部構造としたものである。
請求項２記載の発明は、前記吸引口（５０）を濾過体（３９）の外側面の近傍に配置し、該濾過体（３９）を隔てて前記吸引ダクト（４９）と対向する濾過体（３９）の内側の部位に、前記吸引ファン（３３）によって吸引される外気を遮蔽可能な遮風板（５２）を配置し、該遮風板（５２）と吸引ダクト（４９）とを略同じ位相で回転させる構成としたことを特徴とする請求項１記載の作業車輌の原動部構造としたものである。
請求項３記載の発明は、前記吸引ダクト（４９）と遮風板（５２）とを回転中心となる回転軸（４５）に固着し、該回転軸（４５）を回転駆動する電動モータ（５４）を設けたことを特徴とする請求項２記載の作業車輌の原動部構造としたものである。
請求項４記載の発明は、前記回転軸（４５）を支持する支持部材（４２）に、該回転軸（４５）を回転駆動する電動モータ（５４）を支持させたことを特徴とする請求項３記載の作業車輌の原動部構造としたものである。
請求項５記載の発明は、前記回転軸（４５）を支持する支持部材（４２）に、吸引ファン（３３）によって吸引される外気が通過可能な孔（４４）を形成したことを特徴とする請求項３または請求項４記載の作業車輌の原動部構造としたものである。
請求項６記載の発明は、前記吸引風路（６０）を、ラジエータ（３４）の下側を迂回させて配置したことを特徴とする請求項１〜請求項５のいずれか一項に記載の作業車輌の原動部構造としたものである。
請求項７記載の発明は、前記吸引ダクト（４９）の回転軸（４５）を中空軸とし、該回転軸（４５）内の風路を介して吸引ダクト（４９）と吸引風路（６０）とを接続したことを特徴とする請求項３〜請求項６のいずれか一項に記載の作業車輌の原動部構造としたものである。
請求項８記載の発明は、前記吸引口（５０）における吸引ダクト（４９）の回転方向上手側の部位に、濾過体（３９）の外側面に当接する掃除具（６１）を設けたことを特徴とする請求項１〜請求項７のいずれか一項に記載の作業車輌の原動部構造としたものである。 In order to solve the above problems, the present invention takes the following technical means.
According to the first aspect of the present invention, a cooling suction fan (33) is provided inside the radiator (34), and outside air sucked by the suction action of the suction fan (33) is filtered outside the radiator (34). Rotating suction duct (49) having a suction part (50) for sucking up dust adhering to the outer surface of the filter body (39), which is a driving part structure of a working vehicle provided with a filter body (39). Is disposed at a site outside the filter body (39), and the site in the driving part where the negative pressure is generated by the suction fan (33) and the suction duct (49) are connected by the suction air passage (60). This is a moving part structure of the working vehicle.
According to a second aspect of the present invention, the suction port (50) is disposed in the vicinity of the outer surface of the filter body (39), and the filter body (50) facing the suction duct (49) across the filter body (39) is provided. 39), a wind shielding plate (52) capable of shielding the outside air sucked by the suction fan (33) is disposed on the inner portion of the suction fan (33), and the wind shielding plate (52) and the suction duct (49) are substantially the same. 2. The structure according to claim 1, wherein the structure is configured to rotate in phase.
According to a third aspect of the present invention, the suction duct (49) and the wind shielding plate (52) are fixed to a rotating shaft (45) serving as a rotation center, and the electric motor (54) that rotationally drives the rotating shaft (45). ) Is provided. The driving part structure of the working vehicle according to claim 2 is provided.
The invention according to claim 4 is characterized in that an electric motor (54) for rotationally driving the rotary shaft (45) is supported by a support member (42) for supporting the rotary shaft (45). The working part structure of the working vehicle according to the item 3 is used.
The invention according to claim 5 is characterized in that a hole (44) through which the outside air sucked by the suction fan (33) can pass is formed in the support member (42) that supports the rotating shaft (45). According to a third aspect of the present invention, there is provided a prime mover structure for a working vehicle.
Invention of Claim 6 has arrange | positioned the said suction air path (60) by detouring the lower side of a radiator (34), It is described in any one of Claims 1-5 characterized by the above-mentioned. This is a driving part structure of a working vehicle.
According to a seventh aspect of the present invention, the rotary shaft (45) of the suction duct (49) is a hollow shaft, and the suction duct (49) and the suction air passage (60) are connected via the air path in the rotary shaft (45). And a driving part structure for a working vehicle according to any one of claims 3 to 6, wherein
According to the eighth aspect of the present invention, a cleaning tool (61) that comes into contact with the outer surface of the filter body (39) is provided at a position on the upper side in the rotational direction of the suction duct (49) in the suction port (50). It is set as the drive part structure of the working vehicle as described in any one of Claims 1-7 characterized by the above-mentioned.

請求項１記載の発明によると、吸引ファン（３３）によって発生する負圧により、濾過体（３９）の外側面に付着した塵埃を、吸引ダクト（４９）の吸引口（５０）から外気と共に吸い込んで除去することができる。しかも、この吸引ダクト（４９）を回転させることで、濾過体（３９）の外側面を広範囲にわたって掃除できるものでありながら、濾過体（３９）自体は回転させる必要がないため、この濾過体（３９）を矩形として吸気面積を大きくでき、ラジエータ（３４）およびエンジンの冷却効率の低下を防止して作業車輌の作業能率を高めることができる。
請求項２記載の発明によると、上記請求項１記載の発明の効果を奏するうえに、吸引ファン（３３）によって吸入される外気の流速を、濾過体（３９）の内側の部位に設けた遮風板（５２）によって部分的に低下させ、この流速の低下によって吸着力が弱まった濾過体（３９）の外側面上の部位から塵埃を吸引することで、塵埃を容易に除去することができる。
請求項３記載の発明によると、上記請求項２記載の発明の効果を奏するうえに、電動モータ（５４）によって吸引ダクト（４９）と遮風板（５２）とを一体で回転させることができ、該遮風板（５２）と吸引ダクト（４９）とを略同位相で回転させるための構造を簡素化し、耐久性を向上させることができる。
請求項４記載の発明によると、上記請求項３記載の発明の効果を奏するうえに、回転軸（４５）に固着した吸引ダクト（４９）および遮風板（５２）と、この回転軸（４５）を回転駆動する電動モータ（５４）とを、支持部材（４２）に支持させた状態で、一体的に着脱することができ、メンテナンスを容易に行うことができる。
請求項５記載の発明によると、上記請求項３または請求項４記載の発明の効果を奏するうえに、吸引ファン（３３）によって吸入される外気が、支持部材（４２）に形成した孔（４４）を通過できるため、この支持部材（４２）による通風抵抗を少なくしてラジエータ（３４）およびエンジンの冷却効率を高めることができる。
請求項６記載の発明によると、上記請求項１〜請求項５のいずれか一項に記載の発明の効果を奏するうえに、吸引風路（６０）をラジエータ（３４）の下側を迂回させて配置することで、原動部の前後幅をコンパクトに形成することができる。
請求項７記載の発明によると、上記請求項３〜請求項６のいずれか一項に記載の発明の効果を奏するうえに、吸引ダクト（４９）の吸引口（５０）から塵埃と共に吸引された外気が、この吸引ダクト（４９）を固着した回転軸（４５）内の中空部を通じて吸引風路（６０）側へ吸い出されるため、この吸引風路（６０）から吸引ダクト（４９）までの風路を簡素に構成して安価に提供することができる。
請求項８記載の発明によると、上記請求項１〜請求項７のいずれか一項に記載の発明の効果を奏するうえに、吸引ダクト（４９）の回転に伴ない、吸引口（５０）における吸引ダクト（４９）の回転方向上手側の部位に設けた掃除具（６１）によって、濾過体（３９）の外側面に付着した塵埃を脱落させながら吸引口（５０）から吸い込んで除去することができ、濾過体（３９）の塵埃除去効率を高めることができる。 According to the first aspect of the present invention, dust adhering to the outer surface of the filter body (39) is sucked together with outside air from the suction port (50) of the suction duct (49) by the negative pressure generated by the suction fan (33). Can be removed. In addition, by rotating the suction duct (49), the outer surface of the filter body (39) can be cleaned over a wide range, but the filter body (39) itself does not need to be rotated. 39) can be made rectangular to increase the intake area, and the cooling efficiency of the radiator (34) and the engine can be prevented from being lowered, and the working efficiency of the work vehicle can be increased.
According to the second aspect of the invention, in addition to the effects of the first aspect of the invention, the flow rate of the outside air sucked by the suction fan (33) is blocked at the inner part of the filter body (39). The dust can be easily removed by sucking the dust from the portion on the outer surface of the filter body (39), which is partially reduced by the wind plate (52) and whose adsorption power is weakened by the reduction of the flow velocity. .
According to invention of Claim 3, in addition to having the effect of the invention of Claim 2, the suction duct (49) and the wind shielding plate (52) can be integrally rotated by the electric motor (54). The structure for rotating the wind shielding plate (52) and the suction duct (49) in substantially the same phase can be simplified and the durability can be improved.
According to the invention described in claim 4, in addition to the effects of the invention described in claim 3, the suction duct (49) and the wind shielding plate (52) fixed to the rotating shaft (45), and the rotating shaft (45 The electric motor (54) that rotates and supports the support member (42) can be attached and detached integrally, and maintenance can be easily performed.
According to the invention described in claim 5, in addition to the effects of the invention described in claim 3 or 4, the outside air sucked by the suction fan (33) is formed in the hole (44) formed in the support member (42). ) Can be reduced, the ventilation resistance by the support member (42) can be reduced, and the cooling efficiency of the radiator (34) and the engine can be increased.
According to the invention described in claim 6, in addition to the effects of the invention described in any one of claims 1 to 5, the suction air passage (60) is bypassed below the radiator (34). By arranging them, the front-rear width of the prime mover can be made compact.
According to the invention described in claim 7, in addition to the effects of the invention described in any one of claims 3 to 6, it is sucked together with dust from the suction port (50) of the suction duct (49). Since the outside air is sucked out to the suction air passage (60) through the hollow portion in the rotating shaft (45) to which the suction duct (49) is fixed, the air from the suction air passage (60) to the suction duct (49). The air path can be simply configured and provided at low cost.
According to the invention described in claim 8, in addition to the effects of the invention described in any one of claims 1 to 7, in the suction port (50) as the suction duct (49) rotates. The cleaning tool (61) provided on the upper side in the rotational direction of the suction duct (49) can suck and remove dust adhering to the outer surface of the filter body (39) from the suction port (50) while dropping off. It is possible to increase the dust removal efficiency of the filter body (39).

コンバインの右側面図Combine right side view コンバインの平面図Top view of the combine コンバインの左側面図Combine left side view ラジエータカバーを内側から視た説明図Explanatory drawing of the radiator cover viewed from the inside ラジエータカバー周辺をコンバインの正面から視た説明図Explanatory drawing of the radiator cover as seen from the front of the combine 要部の断面図Cross section of the main part 要部の断面図Cross section of the main part ラジエータカバーをコンバインの背面から視た説明図Explanatory drawing of the radiator cover as seen from the back of the combine ラジエータカバーの底面図Bottom view of radiator cover 脱穀装置の説明用正面図Front view for explanation of threshing device 脱穀装置の説明用側面図Side view for explanation of threshing device

この発明を実施するコンバインの構成について説明する。尚、以下の記述における「左側」および「右側」とは、コンバインの前進方向に沿う方向を基準とするものであり、操縦部に搭乗した操縦者の視線に沿う表現としている。 The structure of the combine which implements this invention is demonstrated. In the following description, “left side” and “right side” are based on the direction along the forward direction of the combine, and are expressed along the line of sight of the operator who has boarded the control unit.

図１〜図３に示すように、コンバインの機体は、走行装置１を備えた機台２の左側の部位に脱穀装置３を搭載し、機台２の右側の部位には穀粒貯留装置４を搭載し、この穀粒貯留装置４の前側に操縦部５を設け、この操縦部５と脱穀装置３の前側に刈取装置６を設けて構成する。 As shown in FIGS. 1 to 3, the combine body has a threshing device 3 mounted on a left side portion of a machine base 2 provided with a traveling device 1, and a grain storage device 4 on a right side portion of the machine base 2. Is mounted, a control unit 5 is provided on the front side of the grain storage device 4, and a cutting device 6 is provided on the front side of the control unit 5 and the threshing device 3.

前記走行装置１は、機台２の前部に取り付けたミッションケース７から駆動される左右の駆動輪８，８と、左右の転輪フレーム９に軸受された多数の転輪１０にわたってクローラ１１，１１を巻き掛けて構成する。 The traveling device 1 includes crawlers 11 extending over left and right drive wheels 8 and 8 driven from a transmission case 7 attached to the front of the machine base 2 and a large number of wheels 10 supported by left and right wheel frames 9. 11 is wound around.

前記機台２は、角パイプを平面視で矩形状に枠組みして構成する。 The machine base 2 is configured by a rectangular pipe framed in a rectangular shape in plan view.

前記脱穀装置３は、扱胴１２や排塵処理胴１３および２番処理胴１４を備えた上側の扱室１５と、揺動選別棚１６と唐箕１７と１番移送螺旋１８と２番移送螺旋１９を備えた下側の選別室２０とから構成する。前記扱室１５の左外側には、刈取装置６側の引継搬送装置の終端部から刈取穀稈を引き継いで搬送するフィードチェン２１および該フィードチェン２１の上側に対向する挟扼杆２２を備える。尚、この脱穀装置３の後部には、脱穀後の排藁を細かく切断して排出する排藁カッター２３を設ける。
前記穀粒貯留装置４は、底部に排出螺旋を備えた容器である。前記脱穀装置３の１番移送螺旋１８によって回収された穀粒を、１番揚穀筒２４内の１番揚穀螺旋２５を介して該穀粒貯留装置４に投入して貯留する。また、この穀粒貯留装置４の後側には、縦軸中心に旋回自在の揚穀筒２６を設け、この揚穀筒２６の上端部に排出筒２７の基部を上下回動自在に接続する。尚、上記揚穀筒２６と排出筒２７には、移送用の螺旋を夫々内装している。
前記操縦部５は、機台２の右側前部に搭載したエンジン２８を覆う原動部カバー２９の上部に、操縦者が着座する操縦席Ｓを取り付け、この操縦席Ｓの前方に前部操作台を設け、操縦席Ｓの左側には側部操作台を設けて構成する。（前部操作台、側部操作台はいずれも図示省略）前記操縦席Ｓと前部操作台と側部操作台を一体的に覆うキャビン３０を形成し、該キャビン３０における操縦席Ｓと前部操作台の前後間隔部の右側に、操縦者が乗り降りするドア３１を設けている。尚、前記前部操作台の上部には、操舵レバーと、モニターを備えたメータパネルと、ハンドルを設ける。また、前記側部操作台の上部には、前側から後側へ向かって、副変速レバーと、主変速レバーと、刈取クラッチレバーと、脱穀クラッチレバーを設ける。（操舵レバー、メータパネル、ハンドル、副変速レバー、刈取クラッチレバー、脱穀クラッチレバーは図示省略）前記操舵レバーは、左右方向へ倒すことで左右の駆動輪８，８の回転速度に差を生じさせて機体を旋回させるように連繋している。また、操舵レバーを前後方向へ倒すことで、油圧シリンダ（図示省略）を伸縮させて刈取装置６を昇降させるように連繋している。
しかして、図４、図５に示すように、エンジン２８を、その出力軸が左右方向を向く姿勢で、前記機台２の右側前部に防振マウント３２を介して搭載する。これによって、エンジン２８に備えた吸引ファン３３が機体外側（エンジン２８の右側）に配置され、エンジン２８の出力軸に備えたフライホールが機体内側（エンジン２８の左側）に配置される。
そして、前記吸引ファン３３の機体外側（右側）の部位には、エンジン２８冷却用のラジエータ３４を、その長辺部を機体前後方向に沿わせて縦姿勢で搭載する。該ラジエータ３４は、機台２および該機台２に固定したフレームによって支持され、その注水口を上部に備え、冷却水の出入り口を上部および下部に備えている。
前記原動部カバー２９は、エンジン２８およびラジエータ３４の前側を覆う前側壁体と、エンジン２８およびラジエータ３４の上側を覆う上側壁体３６と、エンジン２８およびラジエータ３４の後側を覆う後側壁体と、ラジエータ３４の外側方を覆うラジエータカバー３８とを一体に備えて構成する。（前側壁体と後側壁体は、図示省略）
前記上側壁体３６の上面には操縦席Ｓを取り付ける。
前記ラジエータカバー３８は、鉄板または合成樹脂によって風洞状に構成し、図４に示すように、その上部側ほど前後方向幅が狭くなるように上部を傾斜させて形成する。そして、該ラジエータカバー３８の外側面には、その下端部から上端部にかけて、目抜き板（多孔板）状の矩形に形成した濾過体（防塵網）３９を設ける。該濾過体３９の上部も、ラジエータカバー３８の形状に沿って、その上部側ほど前後方向幅が狭くなるように上部を傾斜させて形成する。濾過体３９とラジエータ３４と吸引ファン３３とエンジン２８とを、機体側面視で重合するように配置する。該ラジエータカバー３８は、前記前側壁体、上側壁体３６、後側壁体とは独立して、機体外側方（右側方）へ横方向回動して開放可能に、上下方向の軸４０で機台２側の固定部材に軸着して取り付ける。
そして、図４、図５に示すように、前記ラジエータカバー３８の内部において、濾過体３９のない上下の無孔板部４１，４１の内側面に固着したステー４３，４３に、板状の支持部材４２の上端部と下端部とを夫々締結固定する。この支持部材４２には、長手方向に沿って、吸引ファン３３によって吸入された外気が通過する矩形の孔４４を形成する。
そして、図５、図６に示すように、前記支持部材４２の下部に丸穴４６を形成し、この丸穴４６に中空パイプ状の回転軸４５を遊嵌状態に貫通させ、該回転軸４５の外周を、丸穴４６の周囲の支持部材４２側の部位に固定したベアリング４７に軸受けさせる。該ベアリング４７は、支持部材４２の裏側と表側との両側に設ける。
そして、前記回転軸４５の外側端部を、濾過体３９に形成した丸穴４７ｈを貫通させて外側部へ突出させ、該回転軸４５の突出端部に吸引ダクト４９の基部を固着する。これにより、吸引ダクト４９の内側の空間部は、回転軸４５の内部の空間に連通する。該吸引ダクト４９は、内側面のみを開放させて吸引口５０を形成した断面コ字状の箱型の部材であり、吸引口５０を濾過体３９の外側面との間に僅かな隙間を有して配置する。また、この吸引口５０における吸引ダクト４９の回転方向上手側の部位に、ブラシ状の掃除具６１の基部を取り付け、この掃除具６１の先端部を濾過体３９の外側面に当接させる。
また、前記回転軸４５の濾過体３９よりも内側の部位に歯車５１を固着し、該歯車５１の外側部に、吸引ファン３３によって吸引される外気を遮蔽可能な遮風板５２を固定する。この大径に形成する歯車５１は、回転軸４５と外周のギヤ部とをアームで支持した構成とし、通風可能な空間を形成する。また、前記遮風板５２は、回転軸４５に対して前記吸引ダクト４９と同じ位相で取り付け、濾過体３９を隔てて吸引ダクト４９と対向する濾過体３９の内側の部位に配置する。
そして、前記歯車５１に噛み合う出力歯車５３を備えた電動モータ５４を、支持部材４２の上部に取り付ける。
上記の構成によって、支持部材４２に取り付けられた回転軸４５と吸引ダクト４９と遮風板５２と電動モータ５４とがＡＳＳＹ化され、一体で着脱することができる。
尚、図７に示すように、前記回転軸４５に代えて、支持部材４２に固定軸５５を固着し、この固定軸４２の先端部外周にベアリング５６，５６を嵌合させ、このベアリング５６，５６によって吸引ダクト４９と歯車５１を回転自在に軸受けする構成としてもよい。
そして、前記回転軸４５（固定軸５５）の内側端部を、上下方向の位置固定された上下方向の上部ダクト５７の上端部で囲い、該回転軸４５内部の空間を上部ダクト５７に連通させる。
また、該上部ダクト５７の下端部を内側方へ向けて屈折させ、ラジエータ３４の下側を迂回する下部ダクト５８を形成する。この下部ダクト５８の内側端部は、吸引ファン３３の外周を囲うシュラウド５９内に開口させる。即ち、このシュラウド５９の内部が、吸引ファン３３によって負圧の発生する原動部内の部位であり、前記回転軸４５の内部の空間と、上部ダクト５７の内部の空間と、下部ダクト５８の内部の空間とから、この負圧の発生する原動部内の部位と吸引ダクト４９とを接続する吸引風路６０が形成される。
以上のように、ラジエータ３４の内側に冷却用の吸引ファン３３を備え、ラジエータ３４の外側には前記吸引ファン３３の吸引作用によって吸入される外気を濾過する濾過体３９を備えた作業車輌の原動部構造とし、前記濾過体３９の外側面に付着した塵埃を吸い取る吸引口５０を備えた回転式の吸引ダクト４９を該濾過体３９の外側の部位に配置し、前記吸引ファン３３によって負圧の発生する原動部内の部位と吸引ダクト４９とを吸引風路６０で接続したので、吸引ファン３３によって発生する負圧により、濾過体３９の外側面に付着した塵埃を、吸引ダクト４９の吸引口５０から外気と共に吸い込んで除去することができる。しかも、この吸引ダクト４９を回転させることで、濾過体３９の外側面を広範囲にわたって掃除できるものでありながら、濾過体３９自体は回転させる必要がないため、この濾過体３９を矩形として吸気面積を大きくでき、ラジエータ３４およびエンジンの冷却効率の低下を防止して作業車輌の作業能率を高めることができる。
また、前記吸引口５０を濾過体３９の外側面の近傍に配置し、該濾過体３９を隔てて前記吸引ダクト４９と対向する濾過体３９の内側の部位に、前記吸引ファン３３によって吸引される外気を遮蔽可能な遮風板５２を配置し、該遮風板５２と吸引ダクト４９とを略同じ位相で回転させる構成としたので、吸引ファン３３によって吸入される外気の流速を、濾過体３９の内側の部位に設けた遮風板５２によって局部的に低下させ、この流速の低下によって吸着力が弱まった濾過体３９の外側面上の部位から塵埃を吸引することで、塵埃を容易に除去することができる。
また、前記吸引ダクト４９と遮風板５２とを回転中心となる回転軸４５に固着し、該回転軸４５を回転駆動する電動モータ５４を設けたので、電動モータ５４によって吸引ダクト４９と遮風板５２とを一体で回転させることができ、該遮風板５２と吸引ダクト４９とを略同位相で回転させるための構造を簡素化し、耐久性を向上させることができる。
また、前記回転軸４５を支持する支持部材４２に、該回転軸４５を回転駆動する電動モータ５４を支持させたので、回転軸４５に固着した吸引ダクト４９および遮風板５２と、この回転軸４５を回転駆動する電動モータ５４とを、支持部材４２に支持させた状態で、一体的に着脱することができ、メンテナンスを容易に行うことができる。
また、前記回転軸４５を支持する支持部材４２に、吸引ファン３３によって吸引される外気が通過可能な孔４４を形成したので、吸引ファン３３によって吸入される外気が、支持部材４２に形成した孔４４を通過することで、この支持部材４２による通風抵抗を少なくしてラジエータ３４およびエンジンの冷却効率を高めることができる。
また、前記吸引風路６０を、ラジエータ３４の下側を迂回させて配置したので、原動部の前後幅をコンパクトに形成することができる。
また、前記吸引ダクト４９の回転軸４５を中空軸とし、該回転軸４５内の風路を介して吸引ダクト４９と吸引風路６０とを接続したので、吸引ダクト４９の吸引口５０から塵埃と共に吸引された外気が、この吸引ダクト４９を固着した回転軸４５内の中空部を通じて吸引風路６０側へ吸い出されるため、この吸引風路６０から吸引ダクト４９までの風路を簡素に構成して安価に提供することができる。
また、前記吸引口５０における吸引ダクト４９の回転方向上手側の部位に、濾過体３９の外側面に当接する掃除具６１を設けたので、吸引ダクト４９の回転に伴ない、吸引口５０における吸引ダクト４９の回転方向上手側の部位に設けた掃除具６１によって、濾過体３９の外側面に付着した塵埃を脱落させながら吸引口５０から吸い込んで除去することができ、濾過体３９の塵埃除去効率を高めることができる。
次に、前記脱穀装置３の一例について説明する。
図１０、図１１に示すように、扱胴１２を軸支する扱胴軸６２を中空軸とし、この扱胴軸６２の一端部にパイプ６３の端部を回転自在に連通させる。このパイプ６３は、その基部を脱穀装置３の前壁から前方へ突出させ、この突出端部６４に、エアコンプレッサーまたは水道を接続できる構成とする。また、このパイプ６３は、脱穀装置３の内部においてニ方向に分岐させ、分岐した一方を前記扱胴軸６２に接続すると共に、分岐した他方を脱穀装置３の内側壁から引き出し、この端部に清掃用のノズル６５を備えた構成とする。
そして、前記扱胴軸６２の中間部から放射方向に噴出パイプ６６，６６を延出させ、この噴出パイプ６６，６６の先端部を扱胴１２の外周面から外部へ突出させ、該突出部にノズル６７，６７を設ける。
この構成により、扱胴１２を回転駆動しながら、パイプ６３の突出端部６４からエアコンプレッサーの高圧空気を送り込むことで、この高圧空気がノズル６７，６７から噴出し、扱室１５内の受網６８等に付着した藁屑を除去することができる。
また、刈取脱穀作業中に、高圧空気をノズル６７，６７から噴出させれば、扱室１５内および揺動選別棚１６上の処理物の乾燥を促進することができ、濡れ扱ぎ適応性を高めることができる。 The threshing device 3 includes an upper handling chamber 15 provided with a handling cylinder 12, a dust removal treatment cylinder 13 and a second treatment cylinder 14, a swing sorting shelf 16, a red pepper 17, a first transfer spiral 18 and a second transfer spiral. And a lower sorting chamber 20 provided with 19. On the left outer side of the handling chamber 15, there are provided a feed chain 21 that takes over and transports the harvested cereal rice cake from the terminal end of the take-up and transport device on the mowing device 6 side, and a clip 22 that faces the upper side of the feed chain 21. In addition, the rear part of this threshing apparatus 3 is provided with a waste cutter 23 for finely cutting and discharging the waste after the threshing.
The grain storage device 4 is a container having a discharge spiral at the bottom. The grains collected by the first transfer helix 18 of the threshing device 3 are put into the grain storage device 4 via the first helix helix 25 in the first hull cylinder 24 and stored. Further, on the rear side of the grain storage device 4, there is provided a swivelable milling cylinder 26 centered on the vertical axis, and a base portion of the discharge cylinder 27 is connected to an upper end portion of the milling cylinder 26 so as to be rotatable up and down. . The cerealing cylinder 26 and the discharging cylinder 27 are each provided with a transfer spiral.
The control unit 5 has a pilot seat S on which a driver sits attached to an upper part of a driving unit cover 29 that covers an engine 28 mounted on the right front portion of the machine base 2. And a side operation table is provided on the left side of the cockpit S. (The front operation table and the side operation table are not shown in the figure.) A cabin 30 that integrally covers the pilot seat S, the front operation table, and the side operation table is formed, and the cockpit S and the front in the cabin 30 are formed. A door 31 on which the operator gets on and off is provided on the right side of the front-rear spacing portion of the unit operation table. A steering lever, a meter panel provided with a monitor, and a handle are provided on the upper part of the front operation console. Further, an auxiliary transmission lever, a main transmission lever, a mowing clutch lever, and a threshing clutch lever are provided on the upper side of the side operation table from the front side to the rear side. (The steering lever, meter panel, handle, auxiliary transmission lever, mowing clutch lever, and threshing clutch lever are not shown.) The steering lever tilts in the left-right direction to cause a difference in rotational speed between the left and right drive wheels 8, 8. Connected to make the aircraft turn. Further, by tilting the steering lever in the front-rear direction, the hydraulic cylinder (not shown) is expanded and contracted so that the reaping device 6 is raised and lowered.
As shown in FIGS. 4 and 5, the engine 28 is mounted on the right front portion of the machine base 2 via the anti-vibration mount 32 in such a posture that its output shaft faces the left-right direction. As a result, the suction fan 33 provided in the engine 28 is arranged on the outer side of the machine body (on the right side of the engine 28), and the fly hole provided on the output shaft of the engine 28 is arranged on the inner side of the machine body (on the left side of the engine 28).
A radiator 34 for cooling the engine 28 is mounted in a vertical posture on the portion of the suction fan 33 on the outer side (right side) of the suction fan 33 with its long side portion along the longitudinal direction of the body. The radiator 34 is supported by the machine base 2 and a frame fixed to the machine base 2, and has a water inlet at the upper part and a cooling water inlet / outlet at the upper part and the lower part.
The prime mover cover 29 includes a front side wall covering the front sides of the engine 28 and the radiator 34, an upper side wall 36 covering the upper sides of the engine 28 and the radiator 34, and a rear side wall covering the rear sides of the engine 28 and the radiator 34. A radiator cover 38 that covers the outer side of the radiator 34 is integrally provided. (The front and rear side walls are not shown)
A cockpit S is attached to the upper surface of the upper wall body 36.
The radiator cover 38 is formed in a wind tunnel shape with an iron plate or synthetic resin, and is formed with an upper portion inclined so that the width in the front-rear direction becomes narrower as shown in FIG. The radiator cover 38 is provided with a filter body (dustproof net) 39 formed in a rectangular shape of a cut-out plate (perforated plate) from the lower end portion to the upper end portion thereof. The upper part of the filter body 39 is also formed by inclining the upper part along the shape of the radiator cover 38 so that the width in the front-rear direction becomes narrower toward the upper part side. The filter body 39, the radiator 34, the suction fan 33, and the engine 28 are arranged so as to be superposed in a side view of the airframe. The radiator cover 38 is independent of the front side wall body, the upper side wall body 36, and the rear side wall body, and can be opened by rotating in the lateral direction to the outside (right side) of the machine body. Attached to the fixing member on the base 2 side.
As shown in FIGS. 4 and 5, plate-like support is provided on stays 43, 43 fixed to the inner side surfaces of the upper and lower non-perforated plate portions 41, 41 without the filter 39 inside the radiator cover 38. The upper end portion and the lower end portion of the member 42 are fastened and fixed, respectively. A rectangular hole 44 through which the outside air sucked by the suction fan 33 passes is formed in the support member 42 along the longitudinal direction.
As shown in FIGS. 5 and 6, a round hole 46 is formed in the lower portion of the support member 42, and a hollow pipe-shaped rotary shaft 45 is passed through the round hole 46 in a loosely fitted state. Is supported by a bearing 47 fixed to a portion on the support member 42 side around the round hole 46. The bearings 47 are provided on both the back side and the front side of the support member 42.
Then, the outer end of the rotating shaft 45 passes through a round hole 47 h formed in the filter body 39 and protrudes to the outer portion, and the base of the suction duct 49 is fixed to the protruding end of the rotating shaft 45. Thereby, the space inside the suction duct 49 communicates with the space inside the rotation shaft 45. The suction duct 49 is a box-shaped member having a U-shaped cross section in which only the inner surface is opened to form the suction port 50, and there is a slight gap between the suction port 50 and the outer surface of the filter 39. And place it. Further, a base of a brush-like cleaning tool 61 is attached to a portion of the suction port 50 on the upper side in the rotation direction of the suction duct 49, and the tip of the cleaning tool 61 is brought into contact with the outer surface of the filter body 39.
In addition, a gear 51 is fixed to a portion inside the filter body 39 of the rotating shaft 45, and a wind shielding plate 52 capable of shielding the outside air sucked by the suction fan 33 is fixed to the outer portion of the gear 51. The gear 51 formed to have a large diameter has a configuration in which the rotating shaft 45 and the outer peripheral gear portion are supported by an arm, and form a space allowing ventilation. Further, the wind shield plate 52 is attached to the rotating shaft 45 in the same phase as the suction duct 49 and is disposed at a portion inside the filter body 39 facing the suction duct 49 with the filter body 39 therebetween.
An electric motor 54 having an output gear 53 that meshes with the gear 51 is attached to the upper portion of the support member 42.
With the above configuration, the rotating shaft 45, the suction duct 49, the wind shielding plate 52, and the electric motor 54 attached to the support member 42 are ASSY and can be attached and detached integrally.
As shown in FIG. 7, instead of the rotary shaft 45, a fixed shaft 55 is fixed to the support member 42, and bearings 56, 56 are fitted to the outer periphery of the distal end portion of the fixed shaft 42. The suction duct 49 and the gear 51 may be rotatably supported by 56.
The inner end of the rotary shaft 45 (fixed shaft 55) is surrounded by the upper end of the upper duct 57 in the vertical direction whose position is fixed in the vertical direction, and the space inside the rotary shaft 45 is communicated with the upper duct 57. .
Further, a lower duct 58 that refracts the lower end portion of the upper duct 57 inwardly and bypasses the lower side of the radiator 34 is formed. The inner end of the lower duct 58 is opened in a shroud 59 that surrounds the outer periphery of the suction fan 33. That is, the inside of the shroud 59 is a portion in the driving portion where negative pressure is generated by the suction fan 33, and the space inside the rotating shaft 45, the space inside the upper duct 57, and the inside of the lower duct 58. From the space, a suction air passage 60 is formed that connects the suction duct 49 and a portion in the driving part where the negative pressure is generated.
As described above, the working vehicle is provided with the cooling suction fan 33 inside the radiator 34 and the filter 34 that filters the outside air sucked by the suction action of the suction fan 33 outside the radiator 34. A rotary suction duct 49 having a suction structure 50 that sucks dust adhering to the outer surface of the filter body 39 is disposed at a portion outside the filter body 39, and a negative pressure is generated by the suction fan 33. Since the portion in the driving section that is generated and the suction duct 49 are connected by the suction air passage 60, the dust adhering to the outer surface of the filter body 39 due to the negative pressure generated by the suction fan 33 is removed from the suction port 50 of the suction duct 49. It can be removed by sucking together with outside air. Moreover, by rotating the suction duct 49, the outer surface of the filter body 39 can be cleaned over a wide range, but the filter body 39 itself does not need to be rotated. The working efficiency of the work vehicle can be increased by preventing the cooling efficiency of the radiator 34 and the engine from being lowered.
Further, the suction port 50 is disposed in the vicinity of the outer surface of the filter body 39 and is sucked by the suction fan 33 into a portion inside the filter body 39 that faces the suction duct 49 across the filter body 39. Since the wind shielding plate 52 capable of shielding the outside air is arranged and the wind shielding plate 52 and the suction duct 49 are rotated at substantially the same phase, the flow rate of the outside air sucked by the suction fan 33 is set to the filter 39. The dust is easily removed by sucking dust from the portion on the outer surface of the filter body 39, which is locally reduced by the wind shield 52 provided at the inner portion of the filter, and whose suction force is weakened by the decrease in the flow velocity. can do.
Further, since the suction duct 49 and the wind shielding plate 52 are fixed to the rotation shaft 45 serving as the rotation center and the electric motor 54 for rotationally driving the rotation shaft 45 is provided, the suction duct 49 and the wind shielding are provided by the electric motor 54. The plate 52 can be rotated integrally, the structure for rotating the wind shielding plate 52 and the suction duct 49 in substantially the same phase can be simplified, and the durability can be improved.
In addition, since the electric motor 54 that rotationally drives the rotating shaft 45 is supported on the support member 42 that supports the rotating shaft 45, the suction duct 49 and the wind shielding plate 52 fixed to the rotating shaft 45, and the rotating shaft The electric motor 54 that rotationally drives 45 can be attached and detached integrally with the support member 42 being supported, and maintenance can be easily performed.
Further, since the hole 44 through which the outside air sucked by the suction fan 33 can pass is formed in the support member 42 that supports the rotating shaft 45, the outside air sucked by the suction fan 33 is formed in the hole formed in the support member 42. By passing through 44, the ventilation resistance by the support member 42 can be reduced, and the cooling efficiency of the radiator 34 and the engine can be increased.
In addition, since the suction air passage 60 is disposed around the lower side of the radiator 34, the front-rear width of the driving portion can be made compact.
Further, since the rotation shaft 45 of the suction duct 49 is a hollow shaft, and the suction duct 49 and the suction air passage 60 are connected via the air passage in the rotation shaft 45, the suction duct 49 together with dust from the suction port 50 of the suction duct 49 is connected. Since the sucked outside air is sucked out to the suction air passage 60 through the hollow portion in the rotary shaft 45 to which the suction duct 49 is fixed, the air passage from the suction air passage 60 to the suction duct 49 is simply configured. And can be provided at low cost.
In addition, since the cleaning tool 61 that comes into contact with the outer surface of the filter body 39 is provided at a position on the upper side in the rotation direction of the suction duct 49 in the suction port 50, the suction in the suction port 50 is accompanied by the rotation of the suction duct 49. With the cleaning tool 61 provided on the upper side of the rotation direction of the duct 49, dust attached to the outer surface of the filter body 39 can be sucked and removed from the suction port 50 while dropping off. Can be increased.
Next, an example of the threshing device 3 will be described.
As shown in FIGS. 10 and 11, a handling cylinder shaft 62 that supports the handling cylinder 12 is a hollow shaft, and an end portion of a pipe 63 is rotatably connected to one end portion of the handling cylinder shaft 62. The pipe 63 has a base projecting forward from the front wall of the threshing device 3, and an air compressor or water supply can be connected to the projecting end 64. In addition, the pipe 63 is branched in two directions inside the threshing device 3, and one of the branched branches is connected to the barrel cylinder 62, and the other branched branch is pulled out from the inner wall of the threshing device 3. It is set as the structure provided with the nozzle 65 for cleaning.
Then, the ejection pipes 66 and 66 are extended in the radial direction from the intermediate portion of the handling cylinder shaft 62, and the distal ends of the ejection pipes 66 and 66 are projected from the outer peripheral surface of the handling cylinder 12 to the outside. Nozzles 67 and 67 are provided.
With this configuration, the high pressure air of the air compressor is blown out from the nozzles 67 and 67 by feeding the high pressure air of the air compressor from the projecting end portion 64 of the pipe 63 while rotationally driving the handling cylinder 12. Swarf adhering to 68 etc. can be removed.
In addition, if high-pressure air is ejected from the nozzles 67 and 67 during the mowing and threshing operation, drying of the processed material in the handling chamber 15 and the swing sorting shelf 16 can be promoted, and wet handling adaptability is improved. Can be increased.

３３吸引ファン
３４ラジエータ
３９濾過体
４２支持部材
４４孔
４５回転軸
４９吸引ダクト
５０吸引口
５２遮風板
５４電動モータ
６０吸引風路
６１掃除具 33 Suction fan 34 Radiator 39 Filter body 42 Support member 44 Hole 45 Rotating shaft 49 Suction duct 50 Suction port 52 Wind shielding plate 54 Electric motor 60 Suction air path 61 Cleaning tool

Claims

A cooling fan (33) for cooling is provided inside the radiator (34), and a filter body (39) for filtering outside air sucked by the suction action of the suction fan (33) is provided outside the radiator (34). And a rotary suction duct (49) having a suction port (50) for sucking dust adhering to the outer surface of the filter body (39). The driving part of the working vehicle, which is arranged at an outer part and connects the part in the driving part where the negative pressure is generated by the suction fan (33) and the suction duct (49) by a suction air passage (60). Construction.

The suction port (50) is disposed in the vicinity of the outer surface of the filter body (39), and the filter body (39) is separated from the suction duct (49) across the filter body (39). A wind shielding plate (52) capable of shielding the outside air sucked by the suction fan (33) is disposed, and the wind shielding plate (52) and the suction duct (49) are rotated in substantially the same phase. The driving part structure of the working vehicle according to claim 1.

The suction duct (49) and the wind shielding plate (52) are fixed to a rotating shaft (45) serving as a rotation center, and an electric motor (54) for rotating the rotating shaft (45) is provided. The working part structure of the working vehicle according to claim 2.

The driving part of the working vehicle according to claim 3, wherein an electric motor (54) for rotationally driving the rotating shaft (45) is supported by a support member (42) for supporting the rotating shaft (45). Construction.

The hole (44) through which the outside air sucked by the suction fan (33) can be formed in the support member (42) that supports the rotating shaft (45). The structure of the driving part of the working vehicle.

The work part drive structure according to any one of claims 1 to 5, wherein the suction air passage (60) is arranged around the lower side of the radiator (34).

The rotation axis (45) of the suction duct (49) is a hollow shaft, and the suction duct (49) and the suction air path (60) are connected via an air passage in the rotation shaft (45). The motive part structure of the working vehicle according to any one of claims 3 to 6.

The cleaning tool (61) which contacts the outer surface of the filter body (39) is provided at a site on the upper side in the rotational direction of the suction duct (49) in the suction port (50). The prime mover structure of the working vehicle according to any one of Items 7.