JPS62201134U - - Google Patents
Info
- Publication number
- JPS62201134U JPS62201134U JP9022686U JP9022686U JPS62201134U JP S62201134 U JPS62201134 U JP S62201134U JP 9022686 U JP9022686 U JP 9022686U JP 9022686 U JP9022686 U JP 9022686U JP S62201134 U JPS62201134 U JP S62201134U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- supply device
- load
- hydraulic pump
- discharge amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 claims 5
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Description
第１図はこの考案の第１実施例を示す系統図、
第２図は第１実施例の動作の説明に供する油圧ポ
ンプと吐出流量との関係を示すグラフ、第３図は
この考案に適用し得る制御回路の制御特性を示す
グラフ、第４図はこの考案に適用し得る圧力制御
弁の一例を示す断面図、第５図は第４図の圧力制
御弁の制御特性を示すグラフ、第６図はこの考案
の第２実施例を示す系統図、第７図は第２実施例
に適用し得るアンロード弁の制御特性を示すグラ
フ、第８図は従来例を示す系統図である。
図中、１はエンジン、２は出力軸、３は油圧ポ
ンプユニツト、３ａは主油圧ポンプ、３ｂは副油
圧ポンプ、３ｃはパワーステアリング用油圧ポン
プ、４はリリーフ弁、５は出力側油圧配管、６は
電磁方向切換弁、１０はアキユムレータ、１２は
吐出量制御装置、１３は圧力検出器、１４は制御
回路、１５は圧力制御弁、１８は油圧シリンダ、
３１はチエツク弁、３２はアンロード弁である。
FIG. 1 is a system diagram showing the first embodiment of this invention.
FIG. 2 is a graph showing the relationship between the hydraulic pump and the discharge flow rate to explain the operation of the first embodiment, FIG. 3 is a graph showing the control characteristics of the control circuit applicable to this invention, and FIG. 5 is a sectional view showing an example of a pressure control valve applicable to the invention; FIG. 5 is a graph showing control characteristics of the pressure control valve of FIG. 4; FIG. 6 is a system diagram showing a second embodiment of the invention; FIG. 7 is a graph showing control characteristics of the unload valve applicable to the second embodiment, and FIG. 8 is a system diagram showing a conventional example. In the figure, 1 is the engine, 2 is the output shaft, 3 is the hydraulic pump unit, 3a is the main hydraulic pump, 3b is the auxiliary hydraulic pump, 3c is the power steering hydraulic pump, 4 is the relief valve, 5 is the output side hydraulic piping, 6 is an electromagnetic directional control valve, 10 is an accumulator, 12 is a discharge amount control device, 13 is a pressure detector, 14 is a control circuit, 15 is a pressure control valve, 18 is a hydraulic cylinder,
31 is a check valve, and 32 is an unload valve.
Claims (1)
ンダと、該油圧シリンダに供給される油圧供給装
置からの作動油圧を制御する制御弁とを備えた油
圧サスペンシヨンにおいて、前記油圧供給装置は
、回転駆動源に連結された油圧ポンプと、その吐
出側に接続されたアキユムレータ及びリリーフ弁
と、前記油圧ポンプの１回転当たりの吐出量を、
当該油圧供給装置に対する負荷に応じて制御する
吐出量制御装置とを備えたことを特徴とする油圧
サスペンシヨンの油圧供給装置。 (2) 前記油圧ポンプは、共通の回転駆動源に連
結された複数の油圧ポンプで構成され、各油圧ポ
ンプの負荷状態及び無負荷状態を吐出量制御装置
で切換えるようにした実用新案登録請求の範囲第
１項記載の油圧サスペンシヨンの油圧供給装置。 (3) 前記油圧ポンプは、共通の回転駆動源に直
接連結された主油圧ポンプ及び副油圧ポンプで構
成され、各油圧ポンプが吐出量制御装置によつて
、油圧供給装置に対する負荷が大きいときには、
両油圧ポンプの吐出量を加えて出力し、油圧供給
装置に対する負荷が小さいときには、主油圧ポン
プのみの吐出量を出力するように制御される実用
新案登録請求の範囲第１項記載の油圧サスペンシ
ヨンの油圧供給装置。 (4) 吐出量制御装置は、回転駆動源及び油圧供
給装置間に介装された変速機を有し、該変速機は
油圧供給装置に対する負荷が大きいときに、高回
転数の出力を、油圧供給装置に対する負荷が小さ
いときに低回転数の出力をそれぞれ出力するよう
に構成されている実用新案登録請求の範囲第１項
記載の油圧サスペンシヨンの油圧供給装置。[Scope of Claim for Utility Model Registration] (1) A vehicle equipped with a hydraulic cylinder interposed between each wheel and the vehicle body, and a control valve that controls the working hydraulic pressure from a hydraulic pressure supply device supplied to the hydraulic cylinder. In the hydraulic suspension, the hydraulic supply device includes a hydraulic pump connected to a rotational drive source, an accumulator and a relief valve connected to the discharge side thereof, and a discharge amount per rotation of the hydraulic pump.
1. A hydraulic pressure supply device for a hydraulic suspension, comprising: a discharge amount control device that controls according to a load on the hydraulic pressure supply device. (2) The above-mentioned hydraulic pump is composed of a plurality of hydraulic pumps connected to a common rotary drive source, and the load state and no-load state of each hydraulic pump are switched by a discharge amount control device. A hydraulic supply device for a hydraulic suspension according to scope 1. (3) The hydraulic pump is composed of a main hydraulic pump and a sub-hydraulic pump that are directly connected to a common rotational drive source, and each hydraulic pump is controlled by a discharge amount control device so that when the load on the hydraulic supply device is large,
Hydraulic suspension according to claim 1, which is controlled so that the discharge amounts of both hydraulic pumps are added together and the output is controlled to output only the discharge amount of the main hydraulic pump when the load on the hydraulic supply device is small. Hydraulic supply device. (4) The discharge amount control device has a transmission interposed between the rotational drive source and the hydraulic pressure supply device, and when the load on the hydraulic pressure supply device is large, the transmission outputs a high rotational speed to the hydraulic pressure. A hydraulic supply device for a hydraulic suspension according to claim 1, which is configured to output an output at a low rotational speed when the load on the supply device is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986090226U JPH0512083Y2 (en) | 1986-06-13 | 1986-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986090226U JPH0512083Y2 (en) | 1986-06-13 | 1986-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62201134U true JPS62201134U (en) | 1987-12-22 |
| JPH0512083Y2 JPH0512083Y2 (en) | 1993-03-26 |
Family
ID=30949897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986090226U Expired - Lifetime JPH0512083Y2 (en) | 1986-06-13 | 1986-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512083Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017094808A (en) * | 2015-11-19 | 2017-06-01 | Ｋｙｂ株式会社 | Suspension device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067209U (en) * | 1983-10-17 | 1985-05-13 | トヨタ自動車株式会社 | Vehicle height adjustment device |
-
1986
- 1986-06-13 JP JP1986090226U patent/JPH0512083Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067209U (en) * | 1983-10-17 | 1985-05-13 | トヨタ自動車株式会社 | Vehicle height adjustment device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017094808A (en) * | 2015-11-19 | 2017-06-01 | Ｋｙｂ株式会社 | Suspension device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512083Y2 (en) | 1993-03-26 |
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