JPS58177631U

JPS58177631U - Hydraulic clutch switching valve device

Info

Publication number: JPS58177631U
Application number: JP7343282U
Authority: JP
Inventors: 土肥　文夫
Original assignee: ヤンマーディーゼル株式会社
Priority date: 1982-05-21
Filing date: 1982-05-21
Publication date: 1983-11-28

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図は従来の油圧切換弁装置の概略縦断面図、第２図
は第１図の■−■方向の正断面図、°第３図は第１図の
■−■方向の正断面図、第４図は第１図のＩＶ−ＩＶ力
方向正断面図、第５図は本考案の実施例１における油圧
切換弁装置の概略縦断面図でありζ第６図は第５図の■
−■方向の正断面図、第７図は第５図の■−■方向の正
断面図、第８図は第５図のＩＶ−ＩＶ力方向正断面図、
第９図は第５第１図「トΔ６ ■４ん　　−ＬＬ　′Ｌ′＃図の油圧保持弁の油圧と時間との関係を示す特性線図、
第１０図は第５図の前進及び後進油圧クラッチの概略側
断面図、第１１図は第一１０図の前進及び後進油圧クラ
ッチのシリンダ内油圧と時間との関係を示す線図、第１
２図は本考案の実施例２−　　　−におシ）る油圧切換
弁装置の概略縦断面図である。１・・・・・・切換弁；２・・・・・・ボデー、３・・
・・・・スプール、５・・・・・・レバー、−１１−’
・・・・油圧ポンプ、１６・・・・・・緩嵌入装置、２
２・・・・・・予圧調圧弁、３０・・・・・・油圧解放
出口、３１．３１’・・・・・・前進及び後進油圧クラ
ッチ、６０・・・・・・油圧保持弁、６０　Ａ−、、−
・・予店保持弁。第２図３０′１′−Ｘ−４９価、鏝　聞（Ｊ３１”　　　　　’３１第６図　　　　　　　　第７図９　１９　　　　４６　　％） “”′Ａ３８　−　　第９図、　ｌ　　　　　　　　　　　　− 「−ト１６第１０図３　６４　−６２　６１Figure 1 is a schematic vertical sectional view of a conventional hydraulic switching valve device, Figure 2 is a front sectional view taken in the ■-■ direction of Figure 1, and Figure 3 is a front sectional view taken in the ■-■ direction of Figure 1. , FIG. 4 is a normal cross-sectional view in the IV-IV force direction of FIG. 1, FIG. 5 is a schematic longitudinal cross-sectional view of the hydraulic switching valve device in Example 1 of the present invention, and FIG.
7 is a front sectional view in the ■-■ direction of FIG. 5, FIG. 8 is a front sectional view in the IV-IV force direction of FIG. 5,
Figure 9 is a characteristic diagram showing the relationship between the oil pressure and time of the oil pressure holding valve shown in Figure 5.
FIG. 10 is a schematic side sectional view of the forward and reverse hydraulic clutches shown in FIG.
FIG. 2 is a schematic vertical sectional view of a hydraulic switching valve device according to a second embodiment of the present invention. 1...Switching valve; 2...Body, 3...
... Spool, 5 ... Lever, -11-'
... Hydraulic pump, 16 ... Loose fitting device, 2
2...Prepressure regulating valve, 30...Hydraulic pressure release outlet, 31.31'...Forward and reverse hydraulic clutch, 60...Hydraulic pressure holding valve, 60 A-,,-
・Pre-store holding valve. Fig. 2 30'1' - 3 64 -62 61

Claims

[Scope of utility model registration request]

A hydraulic clutch switching valve device characterized in that a hydraulic pressure holding valve is provided in a hydraulic oil passage that is released by the hydraulic pressure when the hydraulic clutch switching valve device is in neutral.