丄州658 六、發明說明： 【發明所屬之技術領域】 本發明係關於聯合收穫機。 【先前技術】 習知之聯合收穫機中，如專利文獻1所揭示，存在構 成如下者’即’於引擎中所具備之冷卻用風扇之外側設置 散熱器’並於散熱器之外側設防塵網，於防塵網之内側設 有具有既定寬度之吸入風遮蔽板，且設有對該吸入風遮蔽 板進行旋轉驅動之凝動裝置。 藉由冷卻用風扇之吸入風將草屑等塵埃吸附於防塵網 之外表面上’但隨吸入風遮蔽板之旋轉驅動而依序局部遮 蔽通過防塵網之吸入風’使得塵埃對防塵網之吸附力喪失 而墜落，以防止防塵網堵塞從而防止引擎過熱。 【先行技術文獻】 【專利文獻】 【專利文獻1】日本特開2002-59748號公報 【發明内容】 [發明所欲解決之間題] '周係〜者政熱器之形狀或引擎室之形狀而 形成為矩形。然而，於μ y , 、’、 、上述專利文獻1記載之先行技術中， 形之防塵網之中央部分作為軸芯，對吸人風遮蔽板 進轉驅動’以依序局部遮蔽通過防塵網之吸引風，使 1361658 付塵埃對防塵網之吸附力喪失而墜落之構成。#即，由於 使吸入風遮蔽板相對於矩形之防塵網以描繪圓形執跡之方 式旋轉，故存在無法將吸附於防塵網之角落之塵埃除去， 通過防塵網之吸入風量減少，散熱器及引擎之冷卻效率降 低’導致引擎容易變得過熱之缺點。 [解決問題之技術手段] 本發明為了解決上述問題而採用如下之技術手段。 本發明請求項1記載之發明係於將行進裝置（2)設於機 體架（1)之下侧，將收割裝置（4)設於機體架（1)之前側，將脫 殼裝置、榖粒貯藏裝置（5)、引擎（12)設於機體架（1)之上 側之聯合收穫機中，以將以前述引擎（12)驅動之冷卻用風扇 (13)設於該引擎（12)之外側，將冷卻引擎（12)之散熱器（14) 設於冷卻用風扇（13)之外側，將過濾以前述冷卻用風扇（1 3) 吸入之吸入風以防止塵埃侵入之防塵網（30)設於散熱器（14) 之外側’將局部遮蔽通過該防塵網（3〇)之吸入風之吸入風遮 蔽板（35)設為接近防塵網（3〇)之内側面，並設置使該吸入風 遮蔽板（35)沿防塵網（30)之内側面直線狀往復移動之驅動裝 置（49)為特徵之聯合收穫機。 吸入風遮蔽板（35) —面局部遮蔽通過防塵網（3〇) 之吸入風一面進行移動，使於與該吸入風遮蔽板（35)相 向之防塵網（30 )之外側面之部位，塵埃之吸附力降低， 该塵埃容易脫落。又，因吸入風遮蔽板（35)以直線狀往 復移動’故與使吸入風遮蔽板（3 5 )以描繪圓形軌跡之方 式旋轉的構成相比’附著於防塵網（3〇 )之角部之塵埃亦 1361658 - 容易脫落。 清求項2記載之發明係以將以前述冷卻用風扇（13)吸 入之吸入風吸引防塵網（30)外側面上之塵埃之塵埃吸引口 (55) 於則述吸入風遮蔽板（35)之往復移動路徑之端部為特 徵之請求項1記載之聯合收穫機。 自防塵網（30 )之外側繞過吸入風遮蔽板（35 )之外 緣。卩而被吸引至防塵網（30 )之内側的吸入風，其流速高 於通過不與吸入風遮蔽板（35)相向之防塵網（30)之其 他°卩位的吸入風，該吸入風遮蔽板（35)之外緣部附近之 位之塵埃會與吸入風遮蔽板（35)—併移動於防塵網（3〇) 之外側面上。而且，與該吸入風遮蔽板（35 ) —併移動而 來之塵埃自設置於吸入風遮蔽板（35 )之往復移動路徑之 端部之塵埃吸引口（ 55 )被吸引。 請求項3記載之發明係以將以前述冷卻用風扇（13)吸 入之吸入風吸引防塵網（3〇)外側面上之塵埃之塵埃吸引口 (55)設於前述吸入風遮蔽板（35)之往復移動路徑之端部，並 將從該塵埃吸引口（55)至冷卻用風扇（丨3)之副吸引風路（58) 設為與從防塵網（3〇)通過散熱器（14)至冷卻用風扇（13)之主 吸引風路（59)分離為特徵之請求項丨記載之聯合收穫機。 自防塵網（30 )之外側繞過吸入風遮蔽板（35 )之外 緣部而被吸引至防塵網（3〇 )之内側之吸入風，其流速高 於通過不與吸入風遮蔽板（35)相向之防塵網（3〇)之其 他部位的吸入風，該吸入風遮蔽板（35 )之外緣部附近之 4位的塵埃會與吸入風遮蔽板（35) 一併移動於防塵網（3〇) 1361658 之外側面上。而且，與該吸入風遮蔽板（35) 一併移動而 來之塵埃’自設置於吸入風遮蔽板（35)之往復移動路徑 之端部之塵埃吸引口（55)被吸引。 此時’因將從該塵埃吸引口（55)至冷卻用風扇〇 3)之副 吸引風路（58)設為與從防塵網（3〇)通過散熱器（14)至冷卻用 風扇（13)之主吸引風路（59)分離，因此，自塵埃吸引口（55) 被吸引之塵埃難以附著於散熱器（14)。 [發明之效果] 根據本發明第1項’吸入風遮蔽板（3 5 ) 一面局部遮 蔽通過防塵網（30)之吸入風一面進行移動，使於與該吸 入風遮蔽板（35 )相向之防塵網（3〇 )之外側面之部位， 塵埃之吸附力降低，該塵埃容易脫落，因此能使防塵網（3〇 ) 之堵塞所導致之吸引風量之減少不易發生。而且，吸入風 遮蔽板（35)為直線狀往復移動，因此與使吸入風遮蔽板 以描繪圓形執跡之方式旋轉之構成相比，吸附於防塵網 (30 )之角部之塵埃亦容易脫落，過濾面積之減少被抑制， 確保通過該防塵網（30)之冷卻用之吸入風量，防止引擎 (12)之過熱，提南聯合收穫機之作業效率。 根據申請專利範圍第2項之發明，除了上述本發明第i 項之效果之外，於防塵網（3〇)之外側面上使吸附力減弱 之塵埃與吸入風遮蔽板（35) 一併移動可自設置於吸入 風遮蔽板（35)之往復移動路徑之端部之塵埃吸引口（55) 吸引並除去該塵埃。藉此，可更積極除去防塵網（3〇)上 之塵埃，確保通過該防塵網（3〇)之冷卻用之吸入風量， 1361658 » · '防止引擎（I2)過熱，進一步提高聯合收穫機之作業效率。 根據申請專利範圍第3項之發明，除上述本發明第i 項之效果之外’於防I網（3〇)之外側面上使吸附力減弱 之塵埃與吸入風遮蔽板（35) 一併移動可自設置於吸入 風遮蔽板（35 )之往復移動路徑之端部的塵埃吸引口（ 55 ) 吸引並除去該塵埃。藉此，可更積極除去防塵網上 之塵埃，確保通過該防塵網（30 )之冷卻用之吸入風量， 防止引擎（12)過熱，提高聯合收穫機之作業效率。 馨 又，藉由將從該塵埃吸引口（55)至冷卻用風扇（13)之副 吸引風路（58)設為與從防塵網（30)通過散熱器（14)至冷卻用 風扇（13)之主吸引風路（59)分離，可抑制自塵埃吸引口（ 55) 被吸引之塵埃附著於散熱器（14)，使散熱器（14)之冷卻 效率之降低減少’防止引擎（12 )過熱，進一步提高聯合 收穫機之作業效率。 【實施方式】 如圖1、圖2所示，本發明之聯合收穫機之機體構成如 下：於機體架1之下側設置履帶式之行進裝置2,於機體架 1之上側，左右並排地搭載脫殼裝置3與具備榖粒排出螺鑽 6之穀粒貯藏裝置5’於該毅粒貯藏裝置5之前側設置操縱 部7，於機體架1之前側升降自由地設置收割裝置4。 而且，於上述操縱部7之駕駛座席10之下方之機體架 1之上側搭載引擎12，利用間隔壁將該引擎12包圍而形成 弓丨擎室1 1。於比引擎12靠近機體外側方之機體架1上之部 7 1361658 位，設置由引擎12驅動之引擎冷卻用風扇I]。於比該引擎 冷卻用風扇13靠近機體外側方之機體架1上之部位，設置 引擎12之冷卻用之散熱器14。如圖8所示，於散熱器η 之上方’前後並排地設置油冷卻器15及中間冷卻器16。 如圖3所示’於比上述散熱器14靠近機體外側方之機 體架1上之部位，設置散熱器罩20。如圖4所示，散熱器 罩20之框體21係由前樞22及後框23、連結前框22^後 框23之上橫框24及下橫框25、及上橫框24及下橫框25 之間的中間上橫框26及中間下橫框27組成。於前框22之 上部形成往前下傾斜姿勢之斜框33。而且，於該等框之間 形成成為空間部之開口部28,於該開口部28上貼附設置:CHUZHOU 658 VI. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a combine harvester. [Prior Art] In the conventional combine harvester, as disclosed in Patent Document 1, there is a configuration in which a heat sink is provided on the outer side of the cooling fan provided in the engine, and a dustproof net is provided on the outer side of the heat sink. A suction air shielding plate having a predetermined width is provided inside the dustproof net, and a condensing device for rotationally driving the suction air shielding plate is provided. The dust such as grass clippings is adsorbed on the outer surface of the dustproof net by the suction wind of the cooling fan, but the suction air passing through the dustproof net is partially shielded by the rotation of the suction air shielding plate to make the dust adsorb to the dustproof net. The force is lost and falls to prevent the air filter from becoming clogged and preventing the engine from overheating. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-59748 [Summary of the Invention] [The problem between the invention and the solution] The shape of the system or the shape of the engine room It is formed into a rectangle. However, in the prior art described in the above-mentioned Patent Document 1, the central portion of the air-proof mesh is used as the axial core, and the suction-shield plate is driven to rotate in order to partially shield the dust-proof net. Attracting the wind, the 1361658 pays for the dust to absorb the suction force of the dust net and fall. #即, since the suction air shielding plate is rotated in a manner of depicting a circular shape with respect to the rectangular dustproof net, there is a possibility that the dust adsorbed to the corner of the dustproof net cannot be removed, and the amount of suction air passing through the dustproof net is reduced, the radiator and The cooling efficiency of the engine is reduced, which causes the engine to easily become overheated. [Technical means for solving the problem] In order to solve the above problems, the present invention employs the following technical means. The invention described in claim 1 is that the traveling device (2) is disposed on the lower side of the body frame (1), and the harvesting device (4) is disposed on the front side of the body frame (1), and the husking device and the granules are granulated. The storage device (5) and the engine (12) are disposed in the combine harvester on the upper side of the body frame (1) to set the cooling fan (13) driven by the engine (12) to the outside of the engine (12). The radiator (14) of the cooling engine (12) is disposed outside the cooling fan (13), and the dust-proof net (30) that sucks in the air by the cooling fan (13) to prevent dust from entering is filtered. On the outer side of the radiator (14), the suction air shielding plate (35) that partially shields the suction air passing through the air filter (3) is placed close to the inner side surface of the air filter (3〇), and is provided to make the suction air A combined harvester featuring a drive unit (49) in which the shield plate (35) linearly reciprocates along the inner side of the air filter (30). The suction air shielding plate (35) is partially shielded from the suction air passing through the air filter (3〇), and is placed on the outer side of the dustproof net (30) facing the suction wind shielding plate (35), and the dust The adsorption force is lowered, and the dust is easily peeled off. Further, since the suction air shielding plate (35) reciprocates linearly, it is attached to the corner of the dustproof net (3 〇) in comparison with the configuration in which the suction air shielding plate (35) is rotated so as to draw a circular trajectory. The dust of the Ministry is also 1361658 - easy to fall off. In the invention described in the second aspect, the dust suction port (55) for sucking the dust on the outer side surface of the dustproof net (30) by the suction wind sucked by the cooling fan (13) is used to introduce the air shielding plate (35). The end of the reciprocating path is characterized by the combine harvester described in claim 1. The outer edge of the suction air shielding plate (35) is bypassed from the outer side of the air filter (30). The suction air that is attracted to the inside of the air filter (30) has a higher flow rate than the suction air that passes through other degrees of the air filter (30) that does not face the suction air shielding plate (35). The dust near the outer edge of the plate (35) will move with the suction wind shield (35) and move to the outside of the air filter (3〇). Further, the dust moved from the suction air shielding plate (35) is sucked from the dust suction port (55) provided at the end of the reciprocating path of the suction air shielding plate (35). According to the invention of claim 3, the dust suction port (55) for sucking dust on the outer side of the dustproof net (3〇) by the suction fan sucked by the cooling fan (13) is provided in the suction air shielding plate (35). The end portion of the reciprocating movement path, and the sub-suction air passage (58) from the dust suction port (55) to the cooling fan (丨3) is set to pass from the air filter (3〇) through the radiator (14) The main harvesting air path (59) to the cooling fan (13) is separated into a combine harvester as described in the claims. The suction air that is attracted to the inner side of the air filter (3 〇) from the outer edge of the air suction shield (35) from the outer side of the air filter (30) has a flow velocity higher than that of the air leakage shield (35) The suction air of the other part of the air filter (3〇) facing the air, the dust of the four places near the outer edge of the suction air shielding plate (35) moves together with the suction air shielding plate (35) to the air filter ( 3〇) 1361658 on the outside. Further, the dust 'moved together with the suction air shielding plate (35) is sucked from the dust suction port (55) provided at the end portion of the reciprocating path of the suction air shielding plate (35). At this time, the sub-suction air passage (58) from the dust suction port (55) to the cooling fan 〇3 is set to pass through the radiator (14) from the air filter (3) to the cooling fan (13). The main suction air passage (59) is separated, so that the dust attracted from the dust suction port (55) is hard to adhere to the radiator (14). [Effects of the Invention] According to the first aspect of the present invention, the suction air shielding plate (3 5 ) is partially shielded from the suction air passing through the air filter (30), and is shielded from the suction air shielding plate (35). At the outer side of the net (3 〇), the dust adsorption force is lowered, and the dust is easily detached, so that the reduction of the suction air volume caused by the clogging of the air filter (3 〇) is less likely to occur. Further, since the suction air shielding plate (35) reciprocates linearly, the dust adsorbed to the corners of the air filter (30) is also easier than the configuration in which the suction air shielding plate is rotated in such a manner as to draw a circular shape. The falling off, the reduction of the filtration area is suppressed, and the amount of suction air for cooling by the air filter (30) is ensured to prevent overheating of the engine (12) and the working efficiency of the combiner. According to the invention of claim 2, in addition to the effects of the above item i of the present invention, the dust having weakened adsorption force is moved together with the suction wind shielding plate (35) on the outer side of the dustproof net (3〇). The dust can be sucked and removed from the dust suction port (55) provided at the end of the reciprocating path of the suction wind shielding plate (35). Thereby, the dust on the air filter (3〇) can be more actively removed, and the amount of suction air for cooling through the air filter (3〇) can be ensured, 1361658 » · 'Prevent the engine (I2) from overheating, further improving the combine harvester Work efficiency. According to the invention of claim 3, in addition to the effects of the above-mentioned item i of the present invention, the dust having weakened adsorption force on the outer side of the anti-I net (3〇) is combined with the suction wind shielding plate (35). The movement can attract and remove the dust from the dust suction port (55) provided at the end of the reciprocating path of the suction wind shielding plate (35). Thereby, the dust on the dustproof net can be more actively removed, and the amount of suction air for cooling by the air filter (30) can be ensured, and the engine (12) can be prevented from being overheated, thereby improving the work efficiency of the combine harvester. In addition, the sub-suction air passage (58) from the dust suction port (55) to the cooling fan (13) is set to pass from the air filter (30) through the radiator (14) to the cooling fan (13). ) The main suction air path (59) is separated, and the dust attracted to the dust (55) is attracted to the heat sink (14), and the cooling efficiency of the heat sink (14) is reduced. Preventing the engine (12) Overheating further improves the efficiency of the combine harvester. [Embodiment] As shown in Fig. 1 and Fig. 2, the body of the combine harvester of the present invention is configured such that a crawler type traveling device 2 is provided on the lower side of the body frame 1, and is mounted side by side on the upper side of the body frame 1. The hulling device 3 and the grain storage device 5' having the granule discharge auger 6 are provided with a manipulating portion 7 on the front side of the granule storage device 5, and the reaping device 4 is erected on the front side of the body frame 1. Further, the engine 12 is mounted on the upper side of the body frame 1 below the driver's seat 10 of the control unit 7, and the engine 12 is surrounded by the partition walls to form the bow chamber 11. The engine cooling fan I] driven by the engine 12 is disposed at a position 7 1361658 above the engine frame 1 on the outside of the engine 12. A radiator 14 for cooling of the engine 12 is provided at a portion of the engine frame 1 closer to the outside of the machine than the engine cooling fan 13. As shown in Fig. 8, the oil cooler 15 and the intercooler 16 are arranged side by side in front of and behind the radiator η. As shown in Fig. 3, a radiator cover 20 is provided at a portion on the machine body 1 closer to the outside of the body than the radiator 14. As shown in FIG. 4, the frame 21 of the radiator cover 20 is composed of a front pivot 22 and a rear frame 23, a front frame 22, a rear frame 23, a horizontal frame 24 and a lower horizontal frame 25, and an upper horizontal frame 24 and lower. The middle upper horizontal frame 26 and the middle lower horizontal frame 27 are formed between the horizontal frames 25. A slanted frame 33 is formed in the upper portion of the front frame 22 in a forwardly inclined posture. Further, an opening portion 28 which becomes a space portion is formed between the frames, and the opening portion 28 is attached to the opening portion 28:
中心鐵板構成之防塵網30。防塵網3G亦可為編織鐵 者。 X 該防塵網30將藉由上述冷卻用風扇13之吸引作用而 被吸入之外部氣體過遽防止塵埃之侵入並供給至 内。 1 形成自該防塵網3〇通過散熱器14而到達冷卻 U之主吸引風路59。 運v部用風扇 框體21以縱轴自由轉動之方式安裝於機體 疋。1^具體而言，如圖5、圖7 之口 ^ m ^ 所不，將支撐散熱器14之 231固定於機體架1上，將固定於後框23之縱向之ί 朴32、32轉動自由地插入安裝於使自該縱架3 : 側方向延伸之上下兩個標桿仏、3 機體 藉此，散熱器罩20便能自由 叫之孔内。 1361658 而且，於接近防塵網30之内側面之位置，配置具有140 mm〜150 mm程度之寬度且具有800 mm〜850 mm程度之 高度的吸入風遮蔽板35，將該吸入風遮蔽板35設置為沿著 防塵網30之内侧面以450 mm〜500 mm左右之行程沿機體 之前後方向自由地往復移動。 亦即，如圖8所示，於吸入風遮蔽板35與框體21之 間’設置支撐該吸入風遮蔽板35向機體之前後方向自由往 復移動之引導機構36。具體而言，於框體21之上橫框24 及中間下橫框27分別設置上側導執37u及下側導軌37d， 使該上側導執37u及下侧導轨37d支撐導輥38，該導輥38 介隔軸39而轉動自如地安裝於吸入風遮蔽板35之上端部 與下部。於該狀態下，吸入風遮蔽板35設置為接近防塵網 30之内側面。雖較佳為於防塵網3〇之内側面與吸入風遮蔽 板35之外側面之間並無間隙，但亦可設置】爪爪左右之間 隙以免因彼此之摩擦而產生磨耗。再者，吸入風遮蔽板h 之下側板40B之下端於由安裝於框體21側之引導體51所 夾持之狀悲下以前後自由移動之方式進行支撐。 該及入風遮蔽板3 5分割為上側板a與下側板 之兩部分’使固；t於下側板彻之上端部之銷42自由移動 地嵌合於上側板40A之下部所形成之長孔41。亦即，使吸 入風遮蔽板35為利用長孔41之部分，自由伸縮且自由脊 曲地連接上側板40A與下側板4〇B之構成。 因此’如圖17所示，在上側板40A之上端部之導輥％ 到達上側導軌37u之前端位晋後，< ⑴鲕位置後，上側板4〇Α以沿著斜框 1361658 33之方式轉動傾斜，即便於該斜框33之附近亦遮蔽吸入風。 又’於吸入風遮蔽板35之上側板40A與下側板40B之 間。又置拉伸彈簧44 ’一直施力以使該下側板4〇B與上侧板 4〇A成為直線狀（使上側板40A豎起）。因此，於吸入風 遮蔽板35向離開斜框33之往後方之移動行程中，吸入風 遮蔽板35為直線狀。 又’如圖8所示’於框體21之中間上橫框26之内侧 方，旋轉自由地支撐形成於導程凸輪軸之傳動轴45,於該 轴45女裝有因該傳動軸45之旋轉而沿軸心方向移動 馨 之移動構件46，且將該移動構件46安裝於吸入風遮蔽板 35之下側板40B之内側面之上部。而且，將從動齒輪48 固定於傳動軸45之後端部，使由電動馬達式之驅動裝置49 驅動之驅動齒輪50嚙合於該從動齒輪48。由於傳動軸Μ 係導私凸輪軸，因此僅將驅動裝置49向相同方向旋轉驅 動吸入風遮蔽板35便會重複向前方及後方之往復移動。 於5亥構成中，由於傳動軸45之外側方並不存在防塵網 30 ’故该傳動轴45不會成為冷卻用風扇13產生之吸入風鲁 阻力，引擎至U内之冷卻效果不會降低。 又，當吸入風遮蔽板35向前側移動時，伴隨下側板40B 之移動，上側板40A亦向前側移動並以沿著斜框33之方式 姿勢變更’因此無需獨立地設置使該上側板4〇A與下側板 移動之驅動機構，能簡單地構成吸人風遮蔽板35之移 動機構，可廉價地提供。 根據上述之構成，在啟動引擎12後，冷卻用風扇13 10 Φ： 1361658 旋轉’自散熱器罩20之防塵網30吸入外部氣體，所吸入 之外部氣體自主吸引風路59通過散熱器14之内部核心， 對引擎12之冷卻用之冷卻水進行冷卻，並且—面掠過引擎 1 2之外周一面對其進行冷卻。The air filter 30 formed by the center iron plate. The air filter 3G can also be a woven iron. X The air filter 30 prevents the external air from being sucked by the suction action of the cooling fan 13 and prevents the dust from entering and supplying it. 1 is formed from the air filter 3 through the radiator 14 to reach the main suction air path 59 of the cooling U. The fan frame 21 is attached to the body 自由 so that the vertical axis is freely rotatable. 1^ Specifically, as shown in FIG. 5 and FIG. 7, the 231 of the support heat sink 14 is fixed to the body frame 1, and the longitudinal direction of the rear frame 23 is rotated freely. The ground insertion is installed in the hole which extends from the side of the vertical frame 3 to the lower side of the two bars 仏, 3, and the radiator cover 20 can be freely called. 1361658 Further, a suction air shielding plate 35 having a width of about 140 mm to 150 mm and a height of about 800 mm to 850 mm is disposed at a position close to the inner side surface of the air filter 30, and the suction wind shielding plate 35 is set to The inner side of the air filter 30 is freely reciprocated along the front and rear directions of the body at a stroke of about 450 mm to 500 mm. That is, as shown in Fig. 8, between the suction wind shielding plate 35 and the casing 21, a guiding mechanism 36 for supporting the movement of the suction wind shielding plate 35 in the rear direction is provided. Specifically, the upper side guide 37u and the lower side rail 37d are respectively provided on the horizontal frame 24 and the middle lower horizontal frame 27 of the casing 21, and the upper guide 37u and the lower guide rail 37d support the guide roller 38. The roller 38 is rotatably attached to the upper end portion and the lower portion of the suction air shielding plate 35 via the shaft 39. In this state, the suction wind shielding plate 35 is disposed close to the inner side surface of the dustproof net 30. It is preferable that there is no gap between the inner side surface of the air filter 3 and the outer side surface of the suction air shielding plate 35, but the left and right gaps of the claws may be provided to prevent abrasion due to friction between each other. Further, the lower end of the lower side panel 40B of the suction windshield plate h is supported so as to be freely movable before and after being gripped by the guide body 51 attached to the side of the casing 21. The air inlet shielding plate 35 is divided into two parts of the upper side plate a and the lower side plate to be solid; t is a long hole formed by the pin 42 at the upper end portion of the lower side plate being movably fitted to the lower portion of the upper side plate 40A. 41. In other words, the air intake shielding plate 35 has a configuration in which the upper side plate 40A and the lower side plate 4B are freely stretched and freely slanted by the portion of the long hole 41. Therefore, as shown in Fig. 17, the guide roller % at the upper end portion of the upper side plate 40A reaches the upper side guide rail 37u before the end position is raised, and after the (1) 鲕 position, the upper side plate 4 〇Α follows the oblique frame 1361658 33. When the tilt is turned, the suction wind is blocked even in the vicinity of the oblique frame 33. Further, it is between the upper side plate 40A and the lower side plate 40B of the suction wind shielding plate 35. Further, the tension spring 44' is biased so that the lower side plate 4A and the upper side plate 4A are linear (the upper side plate 40A is erected). Therefore, in the moving stroke of the suction wind shield plate 35 away from the oblique frame 33, the suction air shielding plate 35 is linear. Further, as shown in FIG. 8 'on the inner side of the horizontal frame 26 in the middle of the frame 21, the drive shaft 45 formed on the lead cam shaft is rotatably supported, and the shaft 45 is worn by the drive shaft 45. The movable moving member 46 is moved in the axial direction, and the moving member 46 is attached to the upper side of the inner side surface of the lower side plate 40B of the suction wind shielding plate 35. Further, the driven gear 48 is fixed to the rear end portion of the propeller shaft 45, and the drive gear 50 driven by the electric motor type driving device 49 is engaged with the driven gear 48. Since the drive shaft 导 is a private camshaft, the reciprocating movement to the front and the rear is repeated only by rotating the drive unit 49 in the same direction to drive the suction wind shield 35. In the configuration of the 5H, since the air filter 30 is not present on the side of the drive shaft 45, the drive shaft 45 does not become the suction air resistance generated by the cooling fan 13, and the cooling effect in the engine to the U is not lowered. Further, when the suction wind shielding plate 35 is moved to the front side, the upper side plate 40A is also moved to the front side and moved in a posture along the oblique frame 33 as the lower side plate 40B moves. Therefore, it is not necessary to independently provide the upper side plate 4〇. The driving mechanism for moving the A and the lower side plate can easily constitute the moving mechanism of the suction wind shielding plate 35, and can be provided at low cost. According to the above configuration, after the engine 12 is started, the cooling fan 13 10 Φ: 1361658 rotates 'the air is sucked from the air filter 30 of the radiator cover 20, and the inhaled external air autonomously attracts the air passage 59 through the inside of the radiator 14. At the core, the cooling water for cooling of the engine 12 is cooled, and the surface is swept past the engine 1 2 to cool it.
此時，因收割脫殼作業而產生且懸浮於聯合收穫機之 周圍的草屑等塵埃，會因冷卻用風扇13產生之吸人風而易 於吸附於防塵網30之外側面 '然而，吸入風遮蔽板35局 部遮蔽通過防塵網3〇之吸人風並移動，使於與該吸入風遮 蔽板35相向之防塵網3〇之外側面之部位，塵埃之吸附力 降低，該塵埃易於脫落。藉&，受到機體之行進產生之風 之影響或振動之影響使該塵埃脫落，從而能使因防塵網3〇 «而導致之吸引風量減少不易發生。又，由於吸入風遮 敝板35係直線狀往復移動之構成，故與使吸入風遮蔽板以 描、’.s圓形執跡之方式鉍轉之構成相比，吸附於防塵網3 〇之 角部之塵埃亦容易脫落’過濾面積之減少被抑制，確保通 入風量，防止引擎12過熱， 過該防塵網3 0之冷卻用之吸 提高聯合收穫機之作業效率。 又，如圖5所示，於與吸入風遮蔽板35相向之防塵網 3〇之外側面之部位，被冷卻用風4 13吸入之吸入風之流 動，如圖中之箭頭L、箭頭R，自吸入風遮蔽板35之正面， 繞過該吸入風遮蔽板35之左右兩側之外緣部後，通過防塵 •周30亦即於吸人風遮蔽板35之正面暫時被堵住之大量 吸入風（碰到吸入風遮蔽板35《外側面之吸入風） 吸入防塵網3 0内，該吸 入風遮蔽板35之外緣部匯合並被 11 1361658 入風之流速提高。 而且’於與吸入風遮蔽板35之外緣部相向之防塵網3〇 之外側面上之部位，因通過之吸入風之流速提高而使吸引 塵埃之力增加’防塵網30之外側面上之塵埃被該吸入風遮 蔽板35之外緣部帶動，與該吸入風遮蔽板35 一併移動於 防塵網3 0之外側面上。藉此，防塵網3 〇之外側面上之吸 入風遮蔽板35之移動轨跡上之塵埃被向吸入風遮蔽板35 之移動方向下方側集中。 進而，於吸入風遮蔽板35之往復移動路徑之兩端部設 置塵埃吸引口 55。具體而言，如圖5、圖n、圖12所示， 於框體21之前框22及後框23之任一側或兩側安裝風洞罩 56，於該風洞罩56之内侧面與防塵網3〇之外側面之間設 置1 〇 mm左右之間隙，形成塵埃吸引口 5 5。 藉由該構成’可自吸入風遮蔽板35之往復移動路徑之 端部中設於防塵網30之外側部位之塵埃吸引口 55吸引除 去與吸入風遮蔽板35 —併移動於防塵網3〇之外側面上且 被集中於該吸入風遮蔽板35之移動端部之塵埃。藉此，可 積極除去防塵網30上之塵埃，可確保通過該防塵網3〇之 冷卻用之吸入風量，防止引擎12過熱，進一步提高聯合收 穫機之作業效率。 又，吸入風遮蔽板35之前後外緣部，構成為可移動至 於機體側面觀察時與框體2 1之前框22或後框23重疊之位 置。藉此，吸入風遮蔽板35確實地遮蔽通過防塵網3〇之 外部氣體，塵埃吸引口 55對塵埃之吸引效率提高。 12 1361658 亦即，假設，作為吸入風遮蔽板35之移動方向上流側 之外緣部並未移動至於機體側面觀察時與框體21之前框22 或後框23重疊之位置，冷卻用風扇13產生之吸入風會通 過吸入風遮蔽板35之移動方向上流側之外緣部與前框22 或後框23之間，因該吸引風而使塵埃吸附於防塵網30之 外側面上，從而會對塵埃吸引口 55吸引塵埃造成阻礙。然 而，根據上述之構成，便能確實地遮蔽塵埃吸引口 55附近 之冷卻用風扇13之吸引風，提高塵埃吸引口 55之塵埃吸 引效率。 又，如圖5、圖11、圖12所示，與塵埃吸引口 55相 連之吸引用風路F係設置於框體21之内部。 此時，吸引用風路F中之通過風洞罩56内之副吸引風 路58係與對散熱器14、油冷卻器15及中間冷卻器a等進 行冷卻之主吸引風路59分離，繞過該散熱器14、油冷卻器 15及中間冷卻器16而形成。亦即，副吸引風路5 $係於平 面觀察時由框體21之前框22之内側板6〇與風洞罩56所 包圍之空間，内側板60之内端側與縱架31密接，内側板 6〇成為間隔壁’將副吸引風路58與主吸引風路59分離， 遮蔽兩風路之間。 藉由該構成’將由塵埃吸引口 55至冷卻用風扇13之 副吸引風路58,與自防塵網30通過散熱器14到達冷卻用 風扇13之主吸引風路59分離’可抑制自塵埃吸引口 “被 吸引之塵埃附著於散熱器丨4,減少散熱器14之冷卻效率之 降低’防止引擎12過熱’進-步提高聯合收穫機之作業效 13 1361658 率。 且，如圖5、圖11、圖12所示，上述吸引用風路F， 形成為將形成於縱架31之外框31A與内框31B之間的固定 側吸引風路61連接至副吸引風路58之深側。62係副吸弓丨 風路58之出口，63係固定側吸引風路61之入口。 亦即’吸引用風路F之構成係分割形成為固定側之固 定側吸引風路61與移動側之副吸引風路58，固定側吸引風 路61連通至包圍冷卻用風扇13及引擎12之圍板64内， 使該圍板64之後端之開口部與引擎室u連通，使來自副 吸引風路58之吸入風通過固定側吸引風路61，吸入引擎室 又，吸引用風路F之構成係藉由關閉散熱器罩2〇而使 副吸引風路58與固定侧吸引風路61連通，使吸引風通到 圍板64之内側之引擎室丨i。 、'^即’於㈣21側安裝密封構# 65，在使散熱器罩 2〇以女裝軸32為中心向内側方轉動而關閉後，該密封構件 65密接於縱架31，使得副吸引風㉗58與固定侧吸引風路 61連通，形成吸引用風路F ^ 再者，圖5、® 1 1 側與後側設置塵埃及引示之實施例中’雖係於前 密封構件65 /，且於前側與後側各2處設置 之實施例中，僅於前側設置塵埃吸引 口 55’且密封構侔 、 僅於則側2處與後側1處設置。 藉由上述構成，利 板64内所產生之負壓白：風扇13之旋轉而於圍 壓’自塵埃吸引口 55吸引防塵網30之 丄測658At this time, dust such as grass clippings generated by the harvesting and unpacking operation and suspended around the combine harvester is easily attracted to the outer side of the dustproof net 30 by the suction wind generated by the cooling fan 13 The shielding plate 35 partially shields the suction air passing through the air filter 3 and moves, so that the suction force of the dust is lowered at a portion on the outer side of the air filter 3 facing the suction air shielding plate 35, and the dust is easily detached. By borrowing &, the dust is detached by the influence of the wind generated by the movement of the body or by the vibration, so that the suction air volume caused by the dust filter 3 is less likely to occur. Further, since the suction wind concealing plate 35 is configured to reciprocate linearly, it is adsorbed to the dustproof net 3 as compared with the configuration in which the suction air shielding plate is swung by the '.s circular shape. The dust at the corners is also easy to fall off. The reduction in the filtration area is suppressed, the air volume is ensured, and the engine 12 is prevented from being overheated. The suction of the air filter 30 improves the working efficiency of the combine harvester. Further, as shown in FIG. 5, the flow of the suction air sucked by the cooling air 413 at a portion on the outer surface of the air filter 3 facing the suction air shielding plate 35 is indicated by an arrow L and an arrow R in the figure. The front side of the suction air shielding plate 35 is bypassed by the outer edge portions of the left and right sides of the suction air shielding plate 35, and is temporarily infiltrated by the dustproof/week 30, that is, the front side of the suction air shielding plate 35. The wind (intakes the suction wind of the outer side of the suction air shielding plate 35) is sucked into the dustproof net 30, and the outer edge of the suction wind shielding plate 35 merges and the flow velocity of the air entering the air is increased by 11 1361658. Further, the portion on the outer side surface of the dustproof net 3 which faces the outer edge portion of the suction wind shielding plate 35 is increased in the flow rate of the suction air due to the increase in the flow rate of the suction air passing through the outer side of the dustproof net 30. The dust is driven by the outer edge portion of the suction wind shielding plate 35, and is moved together with the suction air shielding plate 35 on the outer surface of the dustproof mesh 30. Thereby, the dust on the movement path of the suction wind shielding plate 35 on the outer side surface of the air filter 3 is concentrated toward the lower side in the moving direction of the suction wind shielding plate 35. Further, a dust suction port 55 is provided at both end portions of the reciprocating path of the suction wind shielding plate 35. Specifically, as shown in FIG. 5, FIG. 12 and FIG. 12, a wind tunnel cover 56 is attached to either side or both sides of the frame 22 and the rear frame 23 of the frame body 21, and the inner side surface of the wind tunnel cover 56 and the air filter net are provided. A gap of about 1 〇 mm is provided between the outer sides of the three sides to form a dust suction port 55. The dust suction port 55 provided at the outer side of the dust-proof net 30 in the end portion of the reciprocating path of the self-inhalation air shielding plate 35 is sucked and removed by the dust suction panel 35 and moved to the dust screen 3 The outer side surface is concentrated on the dust of the moving end portion of the suction wind shielding plate 35. Thereby, the dust on the air filter (30) can be actively removed, and the amount of suction air for cooling through the air filter (3) can be ensured, and the engine 12 can be prevented from being overheated, thereby further improving the work efficiency of the joint receiver. Further, the front and rear outer edge portions of the air shielding panel 35 are configured to be movable to a position overlapping the front frame 22 or the rear frame 23 of the casing 21 when viewed from the side of the body. Thereby, the suction wind shield plate 35 surely shields the outside air passing through the air filter 3, and the dust suction port 55 improves the suction efficiency of the dust. In other words, it is assumed that the outer edge portion of the upstream side in the moving direction of the suction wind shielding plate 35 does not move to a position overlapping the front frame 22 or the rear frame 23 of the casing 21 when viewed from the side of the body, and the cooling fan 13 generates The suction air passes between the outer edge portion of the upstream side in the moving direction of the suction wind shielding plate 35 and the front frame 22 or the rear frame 23, and the dust is attracted to the outer side surface of the dustproof net 30 by the suction wind. The dust suction port 55 attracts dust and hinders it. However, according to the above configuration, the suction wind of the cooling fan 13 in the vicinity of the dust suction port 55 can be surely shielded, and the dust suction efficiency of the dust suction port 55 can be improved. Further, as shown in Figs. 5, 11, and 12, the suction air passage F connected to the dust suction port 55 is provided inside the casing 21. At this time, the sub-suction air passage 58 passing through the wind tunnel cover 56 in the suction air passage F is separated from the main suction air passage 59 that cools the radiator 14, the oil cooler 15, the intercooler a, and the like, and bypasses The radiator 14, the oil cooler 15, and the intercooler 16 are formed. That is, the sub-suction air passage 5 $ is a space surrounded by the inner side panel 6 框 of the front frame 22 of the frame 21 and the wind tunnel cover 56 in plan view, and the inner end side of the inner side panel 60 is in close contact with the vertical frame 31, and the inner side panel 6〇 becomes a partition wall' separating the sub-suction air passage 58 from the main suction air passage 59, and shielding between the two air passages. According to this configuration, the dust suction port 55 to the sub-suction air passage 58 of the cooling fan 13 is separated from the main suction air passage 59 of the cooling fan 13 through the radiator 14 through the radiator 14 to suppress the dust suction port. "The attracted dust adheres to the radiator 丨4, reducing the reduction in the cooling efficiency of the radiator 14 'preventing the engine 12 from overheating' and increasing the operating efficiency of the combine harvester 13 1361658. Moreover, as shown in Fig. 5 and Fig. 11, As shown in Fig. 12, the suction air passage F is formed to connect the fixed side suction air passage 61 formed between the outer frame 31A and the inner frame 31B of the vertical frame 31 to the deep side of the sub suction air passage 58. The exit of the sub-suction bow hurricane 58 and the entrance of the 63-series fixed-side suction duct 61. That is, the structure of the suction duct F is divided into a fixed-side suction air passage 61 on the fixed side and a sub-suction on the moving side. The air passage 58 and the fixed side suction air passage 61 communicate with each other in the enclosure 64 surrounding the cooling fan 13 and the engine 12, and the opening of the rear end of the enclosure 64 communicates with the engine room u to bring the auxiliary suction air passage 58. The suction air passes through the fixed side suction air path 61, sucks into the engine room, and sucks By the configuration of the air passage F, the sub-duct air passage 58 is communicated with the fixed-side suction air passage 61 by closing the radiator cover 2, and the suction air is passed to the engine room 丨i inside the enclosure 64. That is, the sealing member #65 is attached to the side of the (fourth) 21, and after the radiator cover 2 is turned inwardly around the center of the women's shaft 32, the sealing member 65 is in close contact with the vertical frame 31, so that the auxiliary suction wind 2758 is fixed. The side suction air passages 61 are connected to each other to form the suction air passage F ^. In the embodiment in which the dust and the dust are provided on the side and the rear side of FIG. 5 and the side, the front seal member 65 / is attached to the front side and In the embodiment in which the rear side is provided at two places, the dust suction port 55' is provided only on the front side, and the sealing structure is provided only at the side 2 and the rear side 1. With the above configuration, the inside of the slab 64 is generated. Negative pressure white: the rotation of the fan 13 and the confining pressure 'self-dust attracting port 55 to attract the dust net 30 speculation 658
外側面上之塵埃，因此防塵網30之塵埃除去構造可簡化。 此，’將各風路之剖面積等設定為自塵埃吸引口 55被吸引 之吸引風之流速，高於通過防塵網3〇之主吸引風路％之 吸引風之流速。 又，於將塵埃吸引口 55設置於框體21之前側或後側 之任一側時’亦可將吸入風遮蔽板35之移動速度設定為 月向離開塵埃吸引口 55之方向之移動速度快於向塵埃吸引 口 55側接近時之移動速度。 _作為改變吸入風遮蔽板35之移動速度之構成，如圖18 ::’使其為對驅動裝I 49之驅動旋轉速度進行變速控 ;吸入風遮蔽板3 5之往復移動路徑之端部設有限制 且藉由5亥限制開關70檢測到吸入風遮蔽板3 5已 到達往復移動路徑之端㈣A & 疋％。卩蚧，使其為驅動裝置49之旋轉速 度自動變速。 + 、可構成如下，即，根據散熱器14之水溫對吸入 。。'、Λ板35之移動速度進行變速控制。例如，設置對散熱 :14之水溫進行檢測之水溫感測器71，當散熱器μ之水 -時使吸入風遮蔽板35之移動速度減速。另一方面， 當散熱器14之水.、田^ ▲ 七 声增速 狐上升時’使吸入風遮蔽板35之移動速 又，亦可構成如下 進行驅動之作業離合器 自動開始移動。 又，亦可構成如下 ’即，當對脫殼裝置3及收割部4 72為啟動時，使吸入風遮蔽板35 ’即，當利用引擎旋轉感測器73檢 15 測到引擎12 $ #絲+ 戍者 旋轉時，吸入風遮蔽板35便自動開始移動。 ^ 亦可構成如下’即’當利用引擎旋轉感測器73檢測 引擎12旋轉，且，作業離合器72為啟動時，吸入風遮 蔽板35便自動開始移動。 ”再者雖構成為上述傳動轴45形成於導程凸輪軸，將 驅動裝置49沿固定方向驅動，但亦可代替該構成，而構成 為使傳動轴45為形成有單向螺旋槽之螺旋軸，並藉由使驅 動裝置49正反轉而使吸入風遮蔽板35前後往復移動。於 該情形時，藉由計時器控制驅動裝置49之驅動旋轉方向， 且於到達設定時間之後，將驅動裝置49之驅動旋轉方向切 換為逆向，藉此使吸引風遮蔽板35進行前後往復移動。又， 於傳動軸45之前後兩端部，設置該傳動軸45之螺旋槽與 移動構件46之卡合被解除之部分，即便傳動軸45向同一 方向繼續旋轉亦不會導致破損。 又’雖構成為上述吸入風遮蔽板35沿機體之前後方向 往復移動，但亦可代替此構成，而構成為使吸入風遮蔽板 35沿上下方向往復移動。 再者，為了使上下駕駛座席10變得容易，於框體21 之前側上部形成有斜框33 ’隨之，於散熱器罩2〇之開口部 2 8上存在傾斜部分《然而，吸入風遮蔽板3 5係上下分判妒 成’上側板40A以其之上部為支點轉動，相對下侧板4〇b 彎曲並移動。藉此，斜框33之内側之防塵網3〇亦能有效 清掃。 16 【圖式簡單說明】 圖1係聯合收穫機之右側視圖。 圖2係聯合收穫機之左側視圖。 圖3係引擎附近之說明用平面圖。 圖4係散熱器罩之左側視圖。 圖5係散熱器周邊之說明用平面圖。 圖6係散熱器罩之框體之右側視圖。 圖7係散熱器罩之框體之背面圖。 圖8係吸入風遮蔽板之移動機構之說明用右側視圖。 圖9係吸入風遮蔽板之移動機構之說明用背面圖。 圖1〇係吸入風遮蔽板之移動機構之說明用背面圖。 圖11係散熱器罩之前側之塵埃吸引口部分之說明用水 千剖面圖。 圖12係散熱器罩之後側之塵埃吸引口部分之說明用水 平剖面圖。 圖13係僅於散熱器罩之前側設置塵埃吸引口之實施例 之說明用水平剖面圖。 圖14係僅於散熱器罩之前側設置塵埃吸引口 、貫施例 之框體之右侧視圖。 圖15係僅於散熱器罩之前側設置塵埃吸引口 <實施例 之框體之正面圖。 圖16係散熱器罩之左側視圖。 圖17係表示吸入風遮蔽板之移動狀態之与 〈說明用側視 17 1361658 圖18係方塊電路圖。 【主要元件符號說明】 1 機體架 3 脫殼裝置 4 收割裝置 5 榖粒貯藏裝置 7 操縱部 10 駕駛座席 12 引擎 13 冷卻用風扇 14 散熱器 30 防塵網 35 吸入風遮蔽板 49 驅動裝置 55 塵埃吸引口 58 副吸弓丨風路 59 主吸引風路The dust on the outer side surface can simplify the dust removing structure of the air filter 30. Here, the cross-sectional area of each air passage or the like is set such that the flow velocity of the suction wind sucked from the dust suction port 55 is higher than the flow velocity of the suction wind passing through the main suction air passage % of the air filter 3〇. Further, when the dust suction port 55 is provided on either the front side or the rear side of the casing 21, the moving speed of the suction wind shielding plate 35 can be set to a speed in which the moon moves away from the dust suction port 55. The moving speed when approaching the side of the dust suction port 55. _ As a configuration for changing the moving speed of the suction wind shielding plate 35, as shown in Fig. 18: 'to make the shifting speed of the driving rotational speed of the driving device I 49; the end portion of the reciprocating moving path of the suction wind shielding plate 35 There is a limit and it is detected by the 5H limit switch 70 that the suction wind shielding plate 35 has reached the end (4) A &% of the reciprocating path. That is, it is automatically shifted at the rotational speed of the drive unit 49. + can be configured to be inhaled according to the water temperature of the radiator 14. . ', the moving speed of the seesaw 35 is used for shift control. For example, the water temperature sensor 71 that detects the water temperature of the heat radiation 14 is set to decelerate the moving speed of the suction wind shielding plate 35 when the water of the heat sink μ is used. On the other hand, when the water, the field ▲ and the seven-speed increasing speed fox of the radiator 14 are raised, the moving speed of the suction air shielding plate 35 is increased, and the working clutch that is driven as follows can be automatically started to move. Further, it may be configured such that when the husking device 3 and the harvesting unit 274 are activated, the suction wind shield plate 35' is used, and when the engine rotation sensor 73 is used, the engine 12 is detected. + When the player rotates, the suction wind shield 35 automatically starts moving. ^ It is also possible to construct a state in which the engine 12 is rotated by the engine rotation sensor 73, and when the operation clutch 72 is activated, the suction air shielding plate 35 automatically starts moving. Further, although the drive shaft 45 is formed on the lead cam shaft and the drive unit 49 is driven in the fixed direction, instead of this configuration, the drive shaft 45 may be a screw shaft formed with a unidirectional spiral groove. And the suction air shielding plate 35 is reciprocated back and forth by rotating the driving device 49 in the forward and reverse directions. In this case, the driving rotation direction of the driving device 49 is controlled by the timer, and after the set time is reached, the driving device is driven. The drive rotation direction of 49 is reversed, whereby the suction wind shielding plate 35 is reciprocated back and forth. Further, at the front and rear end portions of the transmission shaft 45, the engagement of the spiral groove of the transmission shaft 45 with the moving member 46 is In the canceled portion, even if the drive shaft 45 continues to rotate in the same direction, it does not cause damage. Further, the suction air shielding plate 35 reciprocates in the front-rear direction of the body, but may be configured to be inhaled instead of this. The windshield plate 35 reciprocates in the vertical direction. Further, in order to facilitate the upper and lower driver's seat 10, a slanted frame 33' is formed on the upper portion of the front side of the casing 21. There is an inclined portion on the opening portion 2 of the cover 2". However, the suction wind shielding plate 35 is divided into upper and lower sides, and the upper side plate 40A is rotated with the upper portion thereof as a fulcrum, and is bent and moved relative to the lower side plate 4b. Thereby, the dustproof net 3〇 on the inner side of the inclined frame 33 can also be effectively cleaned. 16 [Simple description of the drawing] Fig. 1 is a right side view of the combine harvester. Fig. 2 is a left side view of the combine harvester. Figure 4 is a left side view of the heat sink cover. Fig. 5 is a plan view showing the periphery of the heat sink. Fig. 6 is a right side view of the frame of the heat sink cover. Fig. 7 is a frame of the heat sink cover. Fig. 8 is a side view showing the moving mechanism of the suction air shielding plate. Fig. 9 is a rear view showing the moving mechanism of the suction air shielding plate. Fig. 1 is a description of the moving mechanism of the suction air shielding plate Fig. 11 is a cross-sectional view of a portion of the dust suction port on the front side of the radiator cover. Fig. 12 is a horizontal sectional view showing the portion of the dust suction port on the rear side of the radiator cover. Fig. 13 is only for the radiator cover. Setting dust on the front side A horizontal cross-sectional view of the embodiment of the suction port is shown in Fig. 14. Fig. 14 is a right side view of the frame in which the dust suction port is provided only on the front side of the radiator cover, and Fig. 15 is only provided on the front side of the radiator cover. Fig. 16 is a front view of the casing of the embodiment. Fig. 16 is a left side view of the radiator cover. Fig. 17 is a block diagram showing the movement state of the suction wind shielding plate and the side view of the description. Explanation of main components and symbols] 1 Body frame 3 Shelling device 4 Harvesting device 5 Grain storage device 7 Control unit 10 Driving seat 12 Engine 13 Cooling fan 14 Radiator 30 Air filter 35 Suction air shielding plate 49 Driving device 55 Dust suction port 58 Vice suction bow hurricane road 59 main suction wind road