PROBLEM TO BE SOLVED: To prevent a transmission pulley and a transmission belt arranged in a side of an engine from being blowed by radiator cooling air and prevent their deterioration.SOLUTION: An exhaust pipe 53 of an engine E passes between the engine E and a pretreatment transmission belt 49(transmission belt) and extends backward, the side near the pretreatment transmission belt 49 of the exhaust pipe 53 is covered by a heat shield plate 63. The heat shield plate 63 is installed so that it can slope in the direction approaching the pretreatment transmission belt 49 as an inclined plane 63b which is a face in the side near the pretreatment transmission belt 49 of the heat shield plate 63 proceeds rearward of a machine body 3.COPYRIGHT: (C)2015,JPO&INPIT【課題】エンジンの一側に配置される伝動プーリや伝動ベルトに、ラジエータ冷却風が当たることを防止し、その劣化を防止する。【解決手段】エンジンEの排気管53は、エンジンEと前処理伝動ベルト49(伝動ベルト)との間を通って後方に延出し、該排気管53の前処理伝動ベルト49側を遮熱板63によって覆う。該遮熱板63は、該遮熱板63の前処理伝動ベルト49側の面である傾斜面63bが、機体3後方に向かうに従って、前処理伝動ベルト49に近づく方向に傾斜して設けられている。【選択図】図7
