JPS58119648U

JPS58119648U - Hydraulic operated friction clutch power transmission

Info

Publication number: JPS58119648U
Application number: JP1695882U
Authority: JP
Inventors: 原田　伝三郎
Original assignee: 株式会社クボタ
Priority date: 1982-02-08
Filing date: 1982-02-08
Publication date: 1983-08-15
Also published as: JPS6139144Y2

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 the drawing]

第１図ｃ８作業車の側面図、第２図は油圧回路図、第３
図イ、町ま弁オース内の一部展開横断平面図である。１０・・・・・・変速操作弁、１１・・・・・・変速操
作動力用ポンプ、１２・・・・・・開閉弁、１３・・・
・・・絞り弁、１４・・・・・・リリーフ弁、１５・・
・・・・流体圧シリンダ、１６・・・・・・流路切換弁
、Ｒ１・・・・・・第１流路、Ｒ２・・・・・・第２流
路、Ｒ３・・・・・・戻り流路、ｒ・・・・・・パイロ
ット圧流路。Figure 1 is a side view of the c8 work vehicle, Figure 2 is a hydraulic circuit diagram, and Figure 3 is a hydraulic circuit diagram.
Figure A is a partially expanded cross-sectional plan view of the town. 10... Speed change operation valve, 11... Speed change operation power pump, 12... Open/close valve, 13...
... Throttle valve, 14... Relief valve, 15...
...Fluid pressure cylinder, 16...Flow path switching valve, R1...First flow path, R2...Second flow path, R3...・Return flow path, r...Pilot pressure flow path.

Claims

[Scope of utility model registration request]

A first flow path R1 provided with a pilot pressure type on-off valve 12 between the speed change operation power pump 11 and the speed change operation valve 10, and
In order to make the flow resistance larger than that of the first flow path R□, a second flow path R2 equipped with a throttle valve 13 is provided in parallel, and the opening/closing valve 1
The pilot pressure flow path r of No. 2 is connected to the downstream side of the throttle valve of the second flow path R2 or the downstream side of the on-off valve of the first flow path R1 (7), so that the on-off valve 12 is closed and closed as the pilot pressure increases. When the on-off valve 12 is closed, a spring-restored single-acting fluid pressure cylinder 15 is configured to open as the pilot pressure decreases and increases the relief pressure of the relief valve 14 to the pump 11 as the flow path is supplied. a flow path switching valve 1 configured to be connected to the pump 11 when the switch is opened, and to the return flow path R3 when the on-off valve 12 is opened;
Fluid pressure operated friction clutch type power transmission transmission b characterized by being connected to 6.