JPH0411707U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例に係る油圧回路た
るアクテイブサスペンシヨンシステムを示す回路
構成図、第２図はパイロツトシヤツト弁の一実施
例を示す断面図、第３図は従来例としての油圧回
路たるアクテイブサスペンシヨンシステムを示す
回路構成図である。 符号の説明、Ｃ……油圧シリンダ、Ｃ１……油
室、Ｌ……油路、１……油圧源、３……制御弁、
４……タンク、５ａ……供給路、５ｅ……アキユ
ムレータ、５ｊ，１０ａ……絞り、６ａ……排出
路、７，１０……連通路、７ａ……電磁比例リリ
ーフ弁、９……パイロツトシヤツト弁、９ａ……
パイロツト油路。 Fig. 1 is a circuit configuration diagram showing an active suspension system as a hydraulic circuit according to an embodiment of this invention, Fig. 2 is a sectional view showing an embodiment of a pilot shaft valve, and Fig. 3 is a circuit diagram showing an active suspension system as a hydraulic circuit according to an embodiment of this invention. FIG. 1 is a circuit configuration diagram showing an active suspension system that is a hydraulic circuit. Explanation of symbols, C...Hydraulic cylinder, C1...Oil chamber, L...Oil passage, 1...Hydraulic source, 3...Control valve,
4... Tank, 5a... Supply path, 5e... Accumulator, 5j, 10a... Throttle, 6a... Discharge path, 7, 10... Communication path, 7a... Electromagnetic proportional relief valve, 9... Pilot shirt To valve, 9a...
Pilot oil road.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧源からの油圧を供給路、それぞれの制御弁
及びそれぞれの油路を介して複数の油圧シリンダ
の各油室に供給し該各油圧シリンダにおけるシリ
ンダ圧力を上昇させると共に、上記各油室からの
油圧を各油路、各制御弁及び排出路を介してタン
クに排出し各油圧シリンダにおけるシリンダ圧力
を低下させるように形成されてなる油圧回路にお
いて、供給路と排出路とを連通する連通路には供
給路における油圧を設定する電磁比例リリーフ弁
が配設されると共に、各油路には供給路に連通さ
れるパイロツト油路を介してのパイロツト油圧で
作動するパイロツトシヤツト弁が配設され、かつ
、各油路間を連通する連通路には絞りが配設され
、さらに、供給路には絞りを介してのアキユムレ
ータが連通されてなることを特徴とする油圧回路
。 Hydraulic pressure from a hydraulic source is supplied to each oil chamber of a plurality of hydraulic cylinders via a supply path, each control valve, and each oil path to increase the cylinder pressure in each hydraulic cylinder, and the hydraulic pressure from each oil chamber is increased. In a hydraulic circuit configured to discharge hydraulic pressure into a tank via each oil passage, each control valve, and a discharge passage to reduce the cylinder pressure in each hydraulic cylinder, a communication passage that communicates the supply passage and the discharge passage is provided. An electromagnetic proportional relief valve is provided to set the oil pressure in the supply path, and each oil path is provided with a pilot shaft valve operated by pilot oil pressure via a pilot oil path communicating with the supply path. A hydraulic circuit characterized in that a throttle is disposed in a communication path that communicates between the oil passages, and an accumulator is further communicated with the supply path via the throttle.