PROBLEM TO BE SOLVED: To provide a sulky paddy implement which is composed such that its energizing force changing mechanism is easily operated in the case where the implement is provided with an energizing mechanism energizing down ward the front part of a sensor float, an energizing force changing mechanism and a lifting/lowering control means.SOLUTION: In the implement, a height sensor 68 is disposed at an upper part of a sensor float 9 in a working device, a linking member 55 is connected to the height sensor 68 and the front part of the sensor float 9 to detect with the height sensor 68 the vertical position of the sensor float 9 relative to the working device. A lifting/lowering means is provided so that the height from a paddy surface G to the working device is kept at a predetermined height based on a detected value of the height sensor 68. On a part of the linking member 55 front side and of the upper side of the sensor float 9 in the working device are disposed an energizing mechanism 57 energizing the linking member 55 to the lower side and an energizing force changing mechanism 56 changing the energizing force of the energizing mechanism 57.COPYRIGHT: (C)2013,JPO&INPIT【課題】センサーフロートの前部を下方に付勢する付勢機構及び付勢力変更機構、昇降制御手段を備えた場合、付勢力変更機構の操作が行い易くなるように構成する。【解決手段】作業装置におけるセンサーフロート9の上方の部分に高さセンサー68を備え、センサーフロート9の前部と高さセンサー68とに亘って連係部材55を接続して、作業装置に対するセンサーフロート9の上下位置を高さセンサー68により検出する。高さセンサー68の検出値に基づいて、田面Gから作業装置までの高さが設定高さに維持されるようにする昇降制御手段を備える。作業装置におけるセンサーフロート9の上側で且つ連係部材55の前側の部分に、連係部材55を下方側に付勢する付勢機構57と、付勢機構57の付勢力を変更する付勢力変更機構56とを備える。【選択図】図6
