JPH0340223U - - Google Patents

Description

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

第１図はこの考案の第１の実施例を装備したト
ラクタの要部を示す一部展開縦断側面図、第２図
は同トラクタのトランスミツシヨン機構の全体を
示す模式的な縦断側面図、第３図は第１の実施例
要部の分解斜視図、第４図は第１の実施例要部の
縦断背面図、第５図は上記トラクタの油圧機構を
示す油圧回路図、第６図は第２の実施例を装備し
たトラクタの要部を示す一部展開縦断側面図、第
７図はこの考案に係る伝動構造を補助変速装置を
設けない仕様のものに転換した場合についてのト
ラクタ要部の縦断側面図である。 １……前部ハウジング、１ａ……中間壁、２…
…ミツシヨンケース、２ａ……中間壁、３……エ
ンジン、４……原動軸、５……変速軸、６……補
助変速装置、７……駆動軸、１８……従動軸、９
……主変速装置、１０……後側軸受板、１０ａ…
…ボルト挿通穴、１１……前側軸受板、１１ａ…
…油路受継筒部、１１ｂ……ねじ穴、１１ｃ……
軸支承筒部、１１ｄ……台座部、１２，１３……
油圧クラツチ、１４……切換弁装置、１５，１６
……油路、１７……中間軸、１８，１９……油路
、４４……ボルト、４５……ボルト、５９，６０
……歯車、６１，６２……歯車、６３……アイド
ラ歯車、６７……出力歯車、６８……歯車、６９
，６９，６９，６９……歯車、７０，
７０，７０，７０……歯車、７１Ａ，７１
Ｂ……複式同期クラツチ、７９Ｆ，７９Ｒ，７９
Ｌ_１，７９Ｌ_２……油分配室、８２……切換弁、
１１９……複式同期クラツチ。 FIG. 1 is a partially exploded vertical side view showing the main parts of a tractor equipped with a first embodiment of this invention, and FIG. 2 is a schematic vertical side view showing the entire transmission mechanism of the same tractor. Fig. 3 is an exploded perspective view of the main parts of the first embodiment, Fig. 4 is a longitudinal cross-sectional rear view of the main parts of the first embodiment, Fig. 5 is a hydraulic circuit diagram showing the hydraulic mechanism of the tractor, and Fig. 6 7 is a partially exploded vertical sectional side view showing the main parts of a tractor equipped with the second embodiment, and FIG. FIG. 1...Front housing, 1a...Intermediate wall, 2...
...Mission case, 2a...Intermediate wall, 3...Engine, 4...Driving shaft, 5...Transmission shaft, 6...Auxiliary transmission, 7...Drive shaft, 18...Driver shaft, 9
...Main transmission, 10...Rear bearing plate, 10a...
...Bolt insertion hole, 11...Front bearing plate, 11a...
...Oil passage connecting cylinder part, 11b...Screw hole, 11c...
Shaft support cylinder part, 11d... Pedestal part, 12, 13...
Hydraulic clutch, 14...Switching valve device, 15, 16
...Oil passage, 17...Intermediate shaft, 18, 19...Oil passage, 44...Bolt, 45...Bolt, 59,60
... Gear, 61, 62 ... Gear, 63 ... Idler gear, 67 ... Output gear, 68 ... Gear, 69
,69,69,69...gear, 70,
70, 70, 70...gear, 71A, 71
B...Double synchronized clutch, 79F, 79R, 79
L ₁ , 79L ₂ ... oil distribution chamber, 82 ... switching valve,
119...Double synchronization clutch.

Claims (1)

【実用新案登録請求の範囲】 １ トラクタの機体を構成する前部ハウジング１
及びミツシヨンケース２を前後に連設し、エンジ
ン３により駆動される原動軸４と変速軸５との間
で変速伝動を行なう補助変速装置６を前部ハウジ
ング１内の後半部に設置する一方、上記変速軸５
により駆動される駆動軸７と従動軸８との間で変
速伝動を行なう主変速装置９をミツシヨンケース
２内の前半部に設置するトラクタの伝動構造にお
いて、 ミツシヨンケース２を、前端を開放し主変速装
置９の後端側に中間壁２ａを有するものに形成し
て、このミツシヨンケース２の前端に装着する後
側軸受板１０と上記中間壁２ａとに前記した駆動
軸７及び従動軸８を支持させ、また前部ハウジン
グ１を、後端を開放し補助変速装置６の前端側に
中間壁１ａを有するものに形成して、この中間壁
１ａと上記後側軸受板１０の前面に装着する前側
軸受板１１とに前記した原動軸４及び変速軸５を
支持させ、変速軸５から駆動軸７に対し伝動する
中間軸１７を、上記した両軸受板１０，１１に支
持させて設けたことを特徴とする伝動構造。 ２ 前記補助変速装置６を、前記変速軸５上に複
数油圧クラツチ１２，１３を装備する油圧クラツ
チ式のものに構成し、該補助変速装置６用の切換
弁装置１４を前記前側軸受板１１の上面上に設置
する一方、該前側軸受板１１に、変速軸５に穿設
する上記油圧クラツチ１２，１３用の油路１５，
１６を位置固定側の油路に連通させるための油路
受継筒部１１ａを設けて、上記切換弁装置１４か
ら該油路受継筒部１１ａ内に導かれる油路１８，
１９を、前記した両軸受板１０，１１間に形成し
たことを特徴とする請求項１の伝動構造。[Claims for Utility Model Registration] 1. Front housing 1 constituting the body of the tractor
The transmission case 2 is arranged in a row in the front and rear, and the auxiliary transmission device 6 that performs speed change transmission between the driving shaft 4 driven by the engine 3 and the transmission shaft 5 is installed in the rear half of the front housing 1. , said speed change shaft 5
In a tractor transmission structure in which a main transmission device 9 that performs speed change transmission between a drive shaft 7 and a driven shaft 8 driven by a drive shaft 7 is installed in the front half of the transmission case 2, the transmission case 2 is opened at the front end. The main transmission 9 is formed to have an intermediate wall 2a on the rear end side, and the drive shaft 7 and driven shaft described above are attached to the rear bearing plate 10 attached to the front end of the transmission case 2 and the intermediate wall 2a. The front housing 1 is formed to have an open rear end and an intermediate wall 1a on the front end side of the auxiliary transmission 6, and this intermediate wall 1a and the front surface of the rear bearing plate 10 are connected to each other. The driving shaft 4 and the transmission shaft 5 described above are supported by the front bearing plate 11 mounted on the front bearing plate 11, and the intermediate shaft 17, which transmits power from the transmission shaft 5 to the drive shaft 7, is supported by the two bearing plates 10 and 11 described above. A transmission structure characterized by the following. 2. The auxiliary transmission 6 is configured as a hydraulic clutch type equipped with a plurality of hydraulic clutches 12 and 13 on the transmission shaft 5, and the switching valve device 14 for the auxiliary transmission 6 is installed on the front bearing plate 11. An oil passage 15 for the hydraulic clutches 12 and 13, which is installed on the upper surface and is bored in the front bearing plate 11 on the transmission shaft 5;
16 is provided with an oil passage transfer cylinder part 11a for communicating with the oil passage on the fixed position side, and the oil passage 18 is guided from the switching valve device 14 into the oil passage transfer cylinder part 11a.
2. The power transmission structure according to claim 1, wherein a bearing plate 19 is formed between the two bearing plates 10 and 11.