JPS58142439U

JPS58142439U - Hydraulic transmission for work vehicles

Info

Publication number: JPS58142439U
Application number: JP4054882U
Authority: JP
Inventors: 健一小川
Original assignee: 株式会社クボタ
Priority date: 1982-03-23
Filing date: 1982-03-23
Publication date: 1983-09-26
Also published as: JPS6139146Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はコンバイン品側面図、第２図は伝動構造の概略
線図、第３図は油圧回路図、第４図は変速レバー装着部
の正面図、第５図は同部の側面図、第６図は弁体操作用
アームの装着部を示す切欠き正面図、第７図は同部の切
欠き側面図、第８図はレバー係止枠の平面図、第９図は
ボール係合状態の展開断面図である。１８・・・側御弁、１８Ａ・・・弁体、３２・・・変速
レバー、３９・・・融通機構、４０・・・弾性機構、４
４・・・係止機構、Ａ・・・多板伝動クラッチ、Ｓａ・
・・流体圧ピストン。Fig. 1 is a side view of the combine harvester, Fig. 2 is a schematic diagram of the transmission structure, Fig. 3 is a hydraulic circuit diagram, Fig. 4 is a front view of the gear shift lever mounting part, Fig. 5 is a side view of the same part, Fig. 6 is a cutaway front view showing the attachment part of the valve actuation arm, Fig. 7 is a cutout side view of the same part, Fig. 8 is a plan view of the lever locking frame, and Fig. 9 is the ball engagement state. FIG. 18... Side control valve, 18A... Valve body, 32... Speed change lever, 39... Accommodation mechanism, 40... Elastic mechanism, 4
4... Locking mechanism, A... Multi-plate transmission clutch, Sa.
...Fluid pressure piston.

Claims

[Scope of utility model registration request]

In a state in which the fluid pressure operated piston Sa... which individually presses and engages each of the plurality of multi-disc transmission clutches A... is biased to return to the clutch disengagement position, and when the fluid pressure operated piston Sa... A control valve 18 is provided to be moved to the clutch engagement operation position by supply, and to switch the operating state of each piston Sa as the valve body 18A, which is reciprocally movable, changes the operating state of the piston Sa. lever 32,
This is a hydraulic transmission for a working vehicle, which is interlocked and connected to the valve body 18A by a mechanical interlocking mechanism so that it can be moved and operated, and during the interlocking mechanism, the speed change lever 32 is moved from the speed change operation position to the In the initial movement range when moving to the adjacent shift operation position, the shift lever 32
is allowed to move in advance relative to the valve body 18A,
In a final movement range in which the shift lever 32 is moved from a shift operating position to an adjacent shift operating position, the valve body 18A is allowed to return to the shift lever 32 that has been previously moved. A flexible mechanism 39 connects the speed change lever 32 and the valve body 18A so that they move together, and as the speed change lever 32 moves in advance relative to the valve body 18A, the valve body 18A
The flexible mechanism 39 of the interlocking mechanism incorporates an elastic mechanism 40 that accumulates the elastic force for operating the valve body 18A to return to the gear shift lever 32 that has been previously moved. The locking mechanism 44, which locks a portion closer to the valve body than the elastic mechanism 40, is maintained in a locking state against the accumulated elastic force in the initial movement range of the shift lever 32, and A hydraulic transmission device for a work vehicle, characterized in that the gear shift lever 32 is operated to be switched to an unlocked state in the final movement range of the gear shift lever 32.