JPS60135225U

JPS60135225U - Hydraulic supply system for mobile work vehicles

Info

Publication number: JPS60135225U
Application number: JP2355884U
Authority: JP
Inventors: 入倉　晃二; 疋嶋　啓作; 富士崎　康一郎
Original assignee: 株式会社　神崎高級工機製作所
Priority date: 1984-02-20
Filing date: 1984-02-20
Publication date: 1985-09-09

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図はこの考案の一実施例を装備した走行作業車の一
部切欠き概略側面図、第２図は同作業車の要部の部材の
配置を示す模式的平面図、第３図は同作業車要部の一部
展開縦断側面図、第４図は同作業車に設けられた油圧機
構を示す回路図、第５図は上記実施例の作用を説明する
グラフであ゛る。７・・・・・・油圧伝導装置、８・・・・・・ミッショ
ンケース、２０・・・・・・油圧ポンプ、２１・・・・
・・ポンプ軸、２２・・・・・・油圧モ、−タ、２３・
・・・・・モータ軸、３０・・・・・・伝動軸、３２・
・・・・・クラッチ軸、３３・・・・・・油圧クラッチ
、３８・・・・・・リターンばね、３９・・・・・・ピ
ストン、３５，３６・・・・・・歯車、４２・・・・・
・ブレーキ、４３・・・・・・スプリング、４４・・・
・・・ピストン、４６，４７・・・・・・油圧給排回路
、４９・・・・・・チャージポンプ、５０・・・・・・
油補給回路、５４・・・・・・第１の調圧弁、５５・・
・・・・給油回路、５６・・・・・・方向切換弁、５８
・・・・・・被潤滑部、５９・・・・・・ＩＪ　ＩＪ−
フ回路、６０・・・・・・第２の調圧弁、６１・・・・
・・潤滑油供給回路、６３・・・・・・第３の調圧弁、
６３ａ・・・・・・スプリング、６３ｂ・・・・・・制
御ピストン、６４・・・・・・油圧作用回路、６５・・
・・・・絞り弁、６５ａ、６５ｂ・・・・・・絞り、６
６・・・・・・スプリング、６７・・・・・・パイロッ
ト回路、６８・・・・・・逆止弁。Fig. 1 is a partially cutaway schematic side view of a traveling working vehicle equipped with an embodiment of this invention, Fig. 2 is a schematic plan view showing the arrangement of the main parts of the working vehicle, and Fig. 3 is a schematic plan view showing the arrangement of the main parts of the working vehicle. FIG. 4 is a circuit diagram showing a hydraulic mechanism provided in the working vehicle, and FIG. 5 is a graph illustrating the operation of the above embodiment. 7...Hydraulic transmission device, 8...Mission case, 20...Hydraulic pump, 21...
...Pump shaft, 22...Hydraulic motor, -ta, 23.
...Motor shaft, 30...Transmission shaft, 32.
...Clutch shaft, 33...Hydraulic clutch, 38...Return spring, 39...Piston, 35, 36...Gear, 42...・・・・・・
・Brake, 43...Spring, 44...
... Piston, 46, 47 ... Hydraulic supply and discharge circuit, 49 ... Charge pump, 50 ...
Oil supply circuit, 54...First pressure regulating valve, 55...
... Oil supply circuit, 56 ... Directional switching valve, 58
... Lubricated part, 59 ... IJ IJ-
F circuit, 60...Second pressure regulating valve, 61...
...Lubricating oil supply circuit, 63...Third pressure regulating valve,
63a... Spring, 63b... Control piston, 64... Hydraulic action circuit, 65...
... Throttle valve, 65a, 65b... Throttle, 6
6...Spring, 67...Pilot circuit, 68...Check valve.

Claims

[Scope of utility model registration request]

In a traveling work vehicle in which a hydraulic transmission device 7 and a hydraulic clutch β3 are disposed in a power transmission path, the supply of hydraulic oil to the hydraulic clutch 33 is carried out between the hydraulic pump 20 and the hydraulic motor 22 in the hydraulic transmission device 7. A hydraulic pressure supply device configured to be supplied with hydraulic oil to the closed circuit by a charge pump 49, and a first pressure regulating valve for setting the hydraulic pressure of the hydraulic oil to be supplied to the closed circuit. A second pressure regulating valve to 60 for setting the lubricating oil pressure is inserted and installed in the IJ IJ-F circuit 59 of 54, and the second pressure regulating valve 6
A lubricating oil supply circuit 61 connected to the lubricated part 58 is led out from the relief circuit 59 on the primary side of 0, and
The relief pressure of the first pressure regulating valve 54 is set to be slightly lower than the maximum relief pressure of the third pressure regulating valve 63 of the hydraulic pressure gradual increase type for setting the working oil pressure for the hydraulic clutch 33. , Hydraulic supply system for traveling work vehicles.