PROBLEM TO BE SOLVED: To enable a worker to perform lifting/lowering operation of a work machine while viewing the whole work machine from various angles in coupling the work machine and confirming operation of the work machine.SOLUTION: A crawler tractor T includes: a travel machine body 1 to which a work machine is coupled detachably in a rear part via a lifting/lowering link mechanism L a work machine lifting/lowering device 10 lifting/lowering the work machine a control section 19 controlling the work machine lifting/lowering device 10 a steering part 3 which a worker boards a machine inside lifting/lowering operation tool 20 arranged in the steering part 3 and inputting a work machine lifting/lowering operation signal to the control section 19 according to operation of the worker and a machine outside lifting/lowering operation tool 21 arranged outside the travel machine body 1 and inputting a work machine lifting/lowering operation signal to the control section 19 according to operation of the worker. The machine outside lifting/lowering operation tool 21 is disposed detachably in a rear part of the travel machine body 1.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】作業機の連結や作業機の動作確認に際し、作業機全体を様々な角度から見ながら作業機の昇降操作を可能にする。【解決手段】後部に昇降リンク機構Lを介して作業機が着脱可能に連結される走行機体1と、作業機を昇降させる作業機昇降装置10と、作業機昇降装置10を制御する制御部19と、作業者が乗車する運転部3と、運転部3に設けられ、作業者の操作に応じて制御部19に作業機昇降操作信号を入力する機内昇降操作具20と、走行機体1の外部に設けられ、作業者の操作に応じて制御部19に作業機昇降操作信号を入力する機外昇降操作具21と、を備えるクローラトラクタTであって、機外昇降操作具21は、走行機体1の後部に着脱可能に配置される。【選択図】図5
