JPS6382625U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案に係る農用トラクターの走行用伝
動部の構造の実施例を示し、第１図は前輪用差動
機構及び前輪用変速装置の断面図、第２図前輪用
差動機構及び動力取出し装置の断面図、第３図は
蓋体の斜視図、第４図は前輪用変速装置の制御系
統図、第５図は農用トラクター全体の一部切欠き
側面図である。 １ａ，１ｂ……前車輪、２ａ，２ｂ……後車輪
、５……前輪用伝動ケース、８……走行用トラン
スミツシヨン、１０……前輪用変速装置、１２…
…前輪用差動機構、４１……入力軸、４２……差
動機構組込み孔、４３……蓋体、４４……リング
ギア、４７ａ，４７ｂ……サイドギア、４８……
差動機構本体、４９ａ，４９ｂ……ベアリング、
５３……左前輪用伝動軸、５４……右前輪用伝動
軸。 The drawings show an embodiment of the structure of the driving transmission part of an agricultural tractor according to the present invention, FIG. 1 is a sectional view of a front wheel differential mechanism and a front wheel transmission, and FIG. 2 is a front wheel differential mechanism and power extraction. FIG. 3 is a sectional view of the device, FIG. 3 is a perspective view of the lid, FIG. 4 is a control system diagram of the front wheel transmission, and FIG. 5 is a partially cutaway side view of the entire agricultural tractor. 1a, 1b...front wheel, 2a, 2b...rear wheel, 5...front wheel transmission case, 8...driving transmission, 10...front wheel transmission, 12...
... Front wheel differential mechanism, 41 ... Input shaft, 42 ... Differential mechanism assembly hole, 43 ... Lid, 44 ... Ring gear, 47a, 47b ... Side gear, 48 ...
Differential mechanism body, 49a, 49b...bearing,
53... Transmission shaft for left front wheel, 54... Transmission shaft for right front wheel.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 両端側に前車輪１ａ，１ｂを操向自在に取付け
た前輪用伝動ケース５の差動機構組込み孔４２に
対する蓋体４３に、前輪用差動機構１２における
差動機構本体４８を構成するリングギア４４の両
横側に分散させた一対のベアリング４９ａ，４９
ｂを介して前記差動機構本体４８を取付け、左右
一対の前車輪１ａ，１ｂの平均周速度を左右一対
の後車輪２ａ，２ｂの平均周速度と同一またはほ
ぼ同一にする標準伝動状態と、一対の前記前車輪
１ａ，１ｂの平均周速度を左右一対の後車輪２ａ
，２ｂの平均周速度より大にする増速伝動状態と
に切換え自在な前輪用変速装置１０を、走行用ト
ランスミツシヨン８の回転出力を逆転させて前記
前輪用差動機構１２に伝達する状態で着脱自在に
設けた農用トラクターにおける走行用伝動部の構
造であつて、一対の前記ベアリング４９ａ，４９
ｂを同一サイズに形成すると共に、前記差動機構
本体４８を構成する一対のサイドギア４７ａ，４
７ｂの一方のサイドギア４７ａが左前輪用伝動軸
５３に付き、かつ、前記リングギア４４が入力軸
４１の左右側の一方に位置する第１取付け姿勢と
、一方の前記サイドギア４７ａが右前輪用伝動軸
５４に付き、かつ、前記リングギア４４が入力軸
４１の左右側の他方に位置する第２取付け姿勢と
に、前記差動機構本体４８と前記ベアリング４９
ａ，４９ｂとの間または前記ベアリング４９ａ，
４９ｂと前記蓋体４３との間で付け換えられる状
態で前記差動機構本体４８を取外し自在に取付け
てある農用トラクターの走行用伝動部の構造。 A ring gear constituting the differential mechanism main body 48 of the front wheel differential mechanism 12 is attached to the cover body 43 for the differential mechanism installation hole 42 of the front wheel transmission case 5, which has front wheels 1a and 1b attached to both ends so as to be freely steerable. A pair of bearings 49a, 49 distributed on both sides of 44
a standard transmission state in which the differential mechanism main body 48 is attached via b, and the average circumferential speed of the pair of left and right front wheels 1a, 1b is the same or almost the same as the average circumferential speed of the pair of left and right rear wheels 2a, 2b; The average circumferential speed of the pair of front wheels 1a, 1b is the pair of left and right rear wheels 2a.
, 2b, the front wheel transmission 10 can be freely switched to an increased speed transmission state in which the speed is higher than the average circumferential speed of the driving transmission 8, and the rotational output of the driving transmission 8 is reversed and transmitted to the front wheel differential mechanism 12. This is a structure of a traveling transmission part in an agricultural tractor that is detachably provided with a pair of bearings 49a, 49.
a pair of side gears 47a, 4 constituting the differential mechanism main body 48.
7b, one of the side gears 47a is attached to the left front wheel transmission shaft 53, and the ring gear 44 is located on one of the left and right sides of the input shaft 41, and one of the side gears 47a is attached to the right front wheel transmission shaft. The differential mechanism main body 48 and the bearing 49 are attached to the shaft 54 and in a second mounting position in which the ring gear 44 is located on the other left and right sides of the input shaft 41.
a, 49b or the bearing 49a,
49b and the lid body 43, the differential mechanism main body 48 is removably attached.