PROBLEM TO BE SOLVED: To provide a paddy work machine having a leveling device arranged between a working device and a machine body, in which a transmission system can properly be arranged in the leveling device.SOLUTION: A paddy work machine is provided with an input shaft 45 supported forward in the front surface part of a rear axle case 23 and having power of an engine transmitted, a rear wheel transmission shaft arranged in the inside of the rear axle case 23 and transmitting the power of the input shaft 45 to rear wheels, and an output shaft supported backward in the rear surface part of the rear axle case 23 so that a rear end may be arranged in the position lower than the front end 45b of the input shaft 45 and outputting the power of the input shaft 45, in the rear axle case 23. A leveling input shaft supported diagonally upward/forward and transmitting the power to the drive shaft of a leveling device 26 is provided in the leveling device 26. The rear end of the output shaft and a front part of a leveling transmission shaft 71 are connected through the universal joint 78, and the leveling input shaft and the rear of the leveling transmission shaft 71 are connected through the universal joint 79.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2020,JPO&INPIT【課題】整地装置を作業装置と機体との間に配置した水田作業機において、整地装置への伝動系を適切に配置することができるようにする。【解決手段】後車軸ケース２３に、後車軸ケース２３の前面部に前向きに支持されてエンジンの動力が伝達される入力軸４５と、後車軸ケース２３の内部に配置されて入力軸４５の動力を後輪に伝達する後輪伝動軸と、後端部が入力軸４５の前端部４５ｂよりも低い位置に配置されるように後向きに後車軸ケース２３の後面部に支持されて入力軸４５の動力を出力する出力軸とが設けられる。整地装置２６に、斜め上向きの前向きに支持されて動力を整地装置２６の駆動軸に伝達する整地入力軸が設けられる。出力軸の後端部と整地伝動軸７１の前部とが自在継手７８を介して接続され、整地入力軸と整地伝動軸７１の後部とが自在継手７９を介して接続される。【選択図】図４
