JPH02212U

JPH02212U -

Info

Publication number: JPH02212U
Application number: JP7722788U
Authority: JP
Priority date: 1988-06-13
Filing date: 1988-06-13
Publication date: 1990-01-05

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例の油圧回路図、第
２図は同上第１実施例の概略構成図、第３図はレ
ベリングバルブ駆動用油圧アクチユエータの構成
図、第４図は操舵連動流体シリンダの構成図、第
５図は制動連動流体シリンダの構成図、第６図は
本考案の第２実施例の要部油圧回路図、第７図は
本考案の第３実施例の油圧回路図、第８図は同上
第３実施例に適用した操舵連動流体シリンダの構
成図、第９図は同上第３実施例に適用した制動連
動流体シリンダの構成図、第１０図は第８図の操
舵連動流体シリンダの車速一通路面積の関係を示
す図、第１１図は第９図の制動連動流体シリンダ
の車速―通路面積の関係を示す図である。１……前輪、２……前軸、３……後輪、４……
後軸、５〜８……油空圧サスペンシヨン、９〜１
２……給排油パイプ、１３〜１５……レベリング
バルブ、１６……オイルポンプ、１７……給油パ
イプ、１８……オイルタンク、１９……排油パイ
プ、２０……開閉バルブ、２３〜２５……油圧ア
クチユエータ、２６……ステアリング、２７……
ブレーキペダル、５０……操舵連動流体シリンダ
、６２，６３……給排油パイプ、７０……制動連
動流体シリンダ、７９……給排油パイプ。 Fig. 1 is a hydraulic circuit diagram of the first embodiment of the present invention, Fig. 2 is a schematic configuration diagram of the first embodiment of the same, Fig. 3 is a configuration diagram of a hydraulic actuator for driving a leveling valve, and Fig. 4 is a steering interlocking diagram. 5 is a configuration diagram of a brake-linked fluid cylinder, FIG. 6 is a main hydraulic circuit diagram of the second embodiment of the present invention, and FIG. 7 is a hydraulic circuit of the third embodiment of the present invention. 8 is a configuration diagram of the steering-linked fluid cylinder applied to the third embodiment of the same, FIG. 9 is a configuration diagram of the brake-linked fluid cylinder applied to the third embodiment of the same, and FIG. FIG. 11 is a diagram showing the relationship between vehicle speed and passage area of the steering-linked fluid cylinder, and FIG. 11 is a diagram showing the relationship between vehicle speed and passage area of the brake-linked fluid cylinder of FIG. 1...Front wheel, 2...Front axle, 3...Rear wheel, 4...
Rear shaft, 5-8...Hydraulic pneumatic suspension, 9-1
2... Oil supply and drain pipe, 13-15... Leveling valve, 16... Oil pump, 17... Oil supply pipe, 18... Oil tank, 19... Oil drain pipe, 20... Opening/closing valve, 23-25 ... Hydraulic actuator, 26 ... Steering, 27 ...
Brake pedal, 50... Steering-linked fluid cylinder, 62, 63... Oil supply/drainage pipe, 70... Brake-linked fluid cylinder, 79... Oil supply/drainage pipe.

Claims

[Scope of utility model registration request]

In a vehicle hydropneumatic suspension device that suspends each wheel of a vehicle with a hydropneumatic suspension consisting of a hydraulic cylinder and an accumulator, there is a steering-linked fluid cylinder that is linked to steering operation, and a braking-linked fluid cylinder that is linked to brake pedal operation. and a fluid actuator for driving each leveling valve that controls oil supply and drainage for each of the left and right hydro-pneumatic suspensions on the rear wheel side in response to changes in vehicle height, and the above-mentioned steering-linked fluid cylinder. A fluid actuator for driving a leveling valve that drives a leveling valve that controls oil supply/drainage of the front wheel side hydropneumatic suspension in response to a change in vehicle height and the brake-linked fluid cylinder are in communication with each other. For a vehicle, characterized in that a communication oil passage communicating between the left and right hydro-pneumatic suspensions on the front wheel side is provided with an opening/closing valve that opens and closes the communication oil passage in response to the steering interlocking cylinder. Hydraulic pneumatic suspension device.