PROBLEM TO BE SOLVED: To provide a working machine that can avoid the spreading of the constitution of an assist mechanism for assisting the bouncing up of an apron as shifting from a state before the apron bouncing-up to a state after the bouncing-up, in the working machine having a function of assisting the bouncing-up of the apron.SOLUTION: A working machine includes: a frame an apron and a compressive force member extended to a first length to increase compressive force as a distance between a first fulcrum provided at the frame and a second fulcrum provided at the apron becomes long, and triggering force in the direction for bouncing up the apron while shrinking in the second length being shorter than the first length to decrease the compressive force as a distance between the first fulcrum and the second fulcrum is shortened.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2018,JPO&INPIT【課題】エプロン跳ね上げをアシストする機能を有する作業機において、エプロン跳ね上がり前の状態から跳ね上がり後の状態へと移行するに従ってエプロンを跳ね上げるのをアシストするアシスト機構の構成が拡大するのを回避することができる作業機を提供する。【解決手段】フレームと、エプロンと、前記フレームに設けられる第1支点と前記エプロンに設けられる第2支点との間の距離が長くなるに従って第1長さに伸ばされて圧縮力が増加し、前記第1支点と前記第2支点との間の距離が短くなるに従って前記第1長さよりも短い第2長さに縮みながら圧縮力が減少しつつ前記エプロンを跳ね上げる方向に力を作用させる圧縮力部材と、を備える作業機。【選択図】図3
