PROBLEM TO BE SOLVED: To provide a working machine capable of inhibiting the occurrence of backlash of a gear constituting a driving system or uneven rotation of the driving system due to rattle caused by a gap between parts in manufacturing the driving system to stabilize the operation and improve the operability by a torque leveling mechanism for efficiently inhibiting torque fluctuation generated in the driving system using elastic force of an elastic body, the torque leveling mechanism being provided in a mechanical working device.SOLUTION: A driving system (a mechanical working device) to a planting claw 17, which takes out the driving force through a transmission case 4, is provided with a torque leveling mechanism 101. The torque leveling mechanism 101 is provided to inhibit the occurrence of backlash of a gear constituting the driving system or uneven rotation of the driving system due to rattling or torsion of the driving system caused by a gap between parts in manufacturing the driving system by using elastic force of a coil spring 103 (an elastic body).COPYRIGHT: (C)2014,JPO&INPIT【課題】駆動系に発生するトルク変動を、弾性体の弾性力を用いて効率的に抑えるトルク平準化機構を機械作業装置に設けることで、このトルク平準化機構により、駆動系を構成するギヤのバックラッシュまたは駆動系製造時に部品間に生じた隙間によるガタに起因した駆動系の回転ムラ発生を抑えて作業の安定化を図り、作業性を向上させた作業機を提供する。【解決手段】駆動力を、ミッションケース4を介して取り出すものであって、植付爪17に至るまでの駆動系(機械作業装置)にはトルク平準化機構101を設け、このトルク平準化機構101は、コイルバネ103(弾性体)の弾性力を用いて、駆動系を構成するギヤのバックラッシュまたは駆動系製造時に部品間に生じた隙間によるガタや駆動系のねじれに起因した駆動系の回転ムラ発生を抑えるために設けた。【選択図】図4
