PROBLEM TO BE SOLVED: To reduce the cost of a power transmission mechanism of a twin rake by using an inexpensive gear mechanism and to reduce the cost of a power transmission mechanism for driving a roll baler connected to the twin rake.SOLUTION: A power distribution mechanism a for distributing power to a drive shaft from an input shaft of a twin rake comprises three bevel gears, i.e., a bevel gear of the input shaft and bevel gears of right and left drive shafts. Speed-reducing transmission gear mechanisms b between the drive shafts and rotating shafts of rotors comprise a pair of spur gears comprising a large-diameter spur gear of the rotor and a small-diameter spur gear engaging therewith, and a pair of bevel gears comprising a small-diameter bevel gear assembled to the small-diameter spur gear and a small-diameter bevel gear provided at the drive shafts. Of the speed-reducing transmission gear mechanisms b, in the speed-reducing transmission gear mechanism b assembled to one rotor, the small-diameter bevel gear at the rotating shaft of the small-diameter spur gear is assembled in an upward attitude, and in the speed-reducing transmission gear mechanism (b) of the other rotor, the small-diameter bevel gear at the rotating shaft of the small-diameter spur gear is assembled in a downward attitude.COPYRIGHT: (C)2013,JPO&INPIT【課題】安価なギヤ機構を用いて、ツインレーキの動力伝導機構を安価にすることと、ツインレーキに連結したロールベーラ駆動用の動力伝導機構を安価にする。【解決手段】ツインレーキの入力軸から、駆動シャフトに動力を分配する動力分配機構aを、入力軸のベベルギヤと左右の駆動シャフトのベベルギヤとの3枚のベベルギヤで構成し、駆動シャフトとロータの回転軸との間の減速伝導ギヤ機構bを、ロータの大径の平歯車と噛み合う小径の平歯車と一対の平歯車と、小径の平歯車に組み付ける小径のベベルギヤと駆動シャフトに設ける小径のベベルギヤとの一対のベベルギヤとで構成し、その減速伝導ギヤ機構bは、一方のロータに組み込む減速伝導ギヤ機構bは、小径の平歯車の回転軸の小径のベベルギヤを、上向きの姿勢で組み付け、他方のロータの減速伝導ギヤ機構bは、小径の平歯車の回転軸の小径のベベルギヤを、下向きの姿勢で組み付ける。【選択図】図16
