JPS6447481U

JPS6447481U -

Info

Publication number: JPS6447481U
Application number: JP14325587U
Authority: JP
Priority date: 1987-09-18
Filing date: 1987-09-18
Publication date: 1989-03-23

Description

[Brief explanation of the drawing]

第１図は本考案の操向クラツチ・操向ブレーキ
装置の部分の拡大後面断面図、第２図は操向クラ
ツチシリンダー７と操向ブレーキアーム４の部分
の拡大側面図、第３図はミツシヨンケースＭの全
体後面図、第４図は操向クラツチ回路のリリーフ
バルブＬＶ１のセカンド圧を操向ブレーキ装置に
用に利用した実施例の油圧回路図、第５図は第１
図の実施例に用いる操作部の図面、第６図はその
スイツチ回路図、第７図は操向ブレーキシリンダ
ー１７Ｌ，１７ＲをミツシヨンケースＭの外部に
別に配置した実施例の側面図、第８図は第７図の
構成において用いる操向クラツチと操向ブレーキ
の油圧回路図、第９図は操向クラツチバルブＶＣ
のソレノイドｓｏｉａを操作するスイツチ回路図
、第１０図は操向クラツチレバー２５Ｌの側面図
、第１１図は油圧回路の他の実施例を示す図面、
第１２図はソレノイドｓｏｌａと自動操向バルブ
ａｕｔｏＶのソレノイドｓｏｌｃのスイツチ回路
図、第１３図は微調整操向レバー２３の実施例を
示す後面図である。ＬＶ１……リリーフバルブ、ＬＶ２……可変リ
リーフバルブ、Ｍ……ミツシヨンケース、１……
クラツチ係合体、２……操向軸、３Ｌ，３Ｒ……
押圧体、４Ｌ，４Ｒ……操向ブレーキアーム、５
Ｌ，５Ｒ……ブレーキ回動軸、６Ｌ，６Ｒ……操
向クラツチアーム、７Ｌ，７Ｒ……操向クラツチ
シリンダー、８Ｌ，８Ｒ……制動圧油路８Ｌ，８
Ｒ、９Ｌ，９Ｒ……固定側ブレーキケース。 Fig. 1 is an enlarged rear sectional view of the steering clutch/steering brake device of the present invention, Fig. 2 is an enlarged side view of the steering clutch cylinder 7 and the steering brake arm 4, and Fig. 3 is a cross-sectional view of the steering clutch/steering brake device of the present invention. 4 is a hydraulic circuit diagram of an embodiment in which the second pressure of the relief valve LV1 of the steering clutch circuit is used for the steering brake device, and FIG. 5 is a rear view of the entire steering case M.
6 is a circuit diagram of the switch, FIG. 7 is a side view of an embodiment in which the steering brake cylinders 17L and 17R are separately arranged outside the transmission case M, and FIG. The figure is a hydraulic circuit diagram of the steering clutch and steering brake used in the configuration shown in Figure 7, and Figure 9 is a hydraulic circuit diagram of the steering clutch valve VC.
FIG. 10 is a side view of the steering clutch lever 25L, FIG. 11 is a drawing showing another embodiment of the hydraulic circuit,
FIG. 12 is a switch circuit diagram of the solenoid sola and the solenoid solc of the automatic steering valve autoV, and FIG. 13 is a rear view showing an embodiment of the fine adjustment steering lever 23. LV1... Relief valve, LV2... Variable relief valve, M... Mission case, 1...
Clutch engaging body, 2... Steering shaft, 3L, 3R...
Pressing body, 4L, 4R...Steering brake arm, 5
L, 5R... Brake rotation shaft, 6L, 6R... Steering clutch arm, 7L, 7R... Steering clutch cylinder, 8L, 8R... Brake pressure oil path 8L, 8
R, 9L, 9R...Fixed side brake case.

Claims

[Scope of utility model registration request]

In a steering system in which a hydraulic steering clutch device and a hydraulic steering brake device are installed side by side, pressure oil from a hydraulic pump P is sent to the circuit between the steering clutch valve VC and the steering cylinders 7L and 7R. Relief valve L installed in the steering clutch valve VC circuit
Pressure oil ejected from V1 is controlled by a variable relief valve LV2 that is linked to change the relief value according to the amount of operation of the steering clutch lever, and is introduced into the steering brake valve VB to be connected to the steering brake cylinder 9L. ,9R,17L,17R
A steering device for a vehicle, characterized in that it is configured to send oil to.