JPH01285682A - Hydraulic system - Google Patents
Hydraulic systemInfo
- Publication number
- JPH01285682A JPH01285682A JP11049788A JP11049788A JPH01285682A JP H01285682 A JPH01285682 A JP H01285682A JP 11049788 A JP11049788 A JP 11049788A JP 11049788 A JP11049788 A JP 11049788A JP H01285682 A JPH01285682 A JP H01285682A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- hydraulic
- flow rate
- pump
- computer
- 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.)
- Pending
Links
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分腎〕
本発明は、油圧ポンプのビルトインテストを容易にした
油圧システムに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a hydraulic system that facilitates built-in testing of a hydraulic pump.
従来の油圧システムに於いては油圧システムのビルトイ
ンテストは行われているが、油圧ポンプのビルトインテ
ストは行われていない。しかし、油圧システムに於いて
油圧ポンプは重要でめシ、定期的に油圧ポンプ単体の性
能点検を行う必要かめる。In conventional hydraulic systems, a built-in test of the hydraulic system has been performed, but a built-in test of the hydraulic pump has not been performed. However, the hydraulic pump is important in a hydraulic system, and it is necessary to periodically check the performance of the hydraulic pump alone.
しかしながら、従来の油圧システムに於いては油圧ポン
プを油圧システムから外さないと油圧ポンプ単体の性能
点検が行えない几めく、全く点検されないま＼油圧シス
テムの作動不良や圧力が低下してから初めて油圧ポンプ
の性能の劣化や故障が発見される場合が６るなどの問題
を抱えている。However, in conventional hydraulic systems, the performance of the hydraulic pump itself cannot be inspected unless it is removed from the hydraulic system, and the hydraulic pump is not inspected at all. There are problems such as deterioration of pump performance and failures being discovered in some cases.
（＃Ｇｌを解決するための手段〕
本発明に係る油圧システムは上記の課題を解決すること
を目的にしており、油圧ポンプと、該油圧ポンプの吐出
圧力を検出する検出器と、上記油圧ポンプ以外の当該油
圧システムの構成品を制御して上記油圧ポンプの流量の
合計を予め設定された規定値にするとともに上記検出器
によシ検出された吐出圧力が予め規定されｔ吐出圧力の
範囲内にあるか否かを判定するコンピュータとを備えて
なる構成を特徴としている。(Means for Solving #Gl) A hydraulic system according to the present invention aims to solve the above-mentioned problem, and includes a hydraulic pump, a detector for detecting the discharge pressure of the hydraulic pump, and a hydraulic system for the hydraulic pump. The components of the hydraulic system other than the above are controlled to bring the total flow rate of the hydraulic pump to a preset specified value, and the discharge pressure detected by the detector is within a predefined range of discharge pressure. It is characterized by a configuration comprising a computer that determines whether or not it is present.
即ち、本発明に係る油圧システムに於いてはコンピュー
タにより油圧ポンプの性能点検に必要な油圧ポンプの吐
出流量が得られるように油圧システムの構成品であるア
クチエータや油圧モータなどの作動速度を制御し、その
ときの油圧ポンプの吐出圧力が予め設定されｔ規定値の
範囲内にあるかどうかを判定するよう釦なっているので
、油圧ポンプを油圧システムに装着し定ままで油圧ポン
プ単体の性能点検を容易に行うことができる。That is, in the hydraulic system according to the present invention, the operating speed of the actuator, hydraulic motor, etc., which are components of the hydraulic system, is controlled by a computer so that the discharge flow rate of the hydraulic pump necessary for checking the performance of the hydraulic pump is obtained. Since there is a button to determine whether the discharge pressure of the hydraulic pump at that time is within the preset specified value range, you can check the performance of the hydraulic pump alone while the hydraulic pump is installed in the hydraulic system. can be easily done.
本発明の実施例を第１図および第２図に基づき説明する
。第１図は本発明の一実施例に係る油圧システムのスケ
マチイック図である。図に於いて、本実施例に係る油圧
システムは油圧ポンプ１、油圧ポンプ１から圧油が供給
されるアクチエエータ３および油圧モータ４などの構成
品の外にこれらの構成品を制御するとともにその作動状
態を検知するコンピュータ２と油圧ポンプ１の吐出圧力
を検出する圧力センサ５とを備えており、各機器はそれ
ぞれ図に示すように結合されている。Embodiments of the present invention will be described based on FIGS. 1 and 2. FIG. 1 is a schematic diagram of a hydraulic system according to an embodiment of the present invention. In the figure, the hydraulic system according to this embodiment includes components such as a hydraulic pump 1, an actuator 3 to which pressure oil is supplied from the hydraulic pump 1, and a hydraulic motor 4, as well as controlling these components and controlling their operation. It is equipped with a computer 2 that detects the state and a pressure sensor 5 that detects the discharge pressure of the hydraulic pump 1, and each device is connected as shown in the figure.
第２図は本実施例に於ける油圧ポンプ１の性能特性図で
ある。図に於いて、コンピュータ２には予め点検する油
圧ポンプｌの成る吐出流量Ｑとその吐出流量Ｑ＃ｃ於け
る吐出圧力の規定範囲Ｐとが斜線で示すように設定され
ている。この吐出流量Ｑは複数の流量が設定される場合
もめる。コンピュータ２は油圧システムの構成品である
アクチュエータ３や油圧モータ４に作動コマンドを送っ
て制御する。即ち、油圧モータ４に対しては回転数を検
出してその回転数によシ油圧モータ４に流れる流量を求
め、アクチュエータ３に対してはストローク量を検出し
てそのストローク量の時間当九シの変化量などから作動
速度を検出してその速度にピストンの受圧面積を積算す
ることによシ流量を求める。そして、これらの流量の合
計が予め設定され次規定の吐出流ｆＱになるように制御
する。但し、規定の吐出流量Ｑは油圧ポンプ１の回転数
に応じて補正される。FIG. 2 is a performance characteristic diagram of the hydraulic pump 1 in this embodiment. In the figure, the discharge flow rate Q of the hydraulic pump l to be inspected and the specified range P of the discharge pressure at the discharge flow rate Q#c are set in the computer 2 in advance as indicated by diagonal lines. This discharge flow rate Q may be determined when a plurality of flow rates are set. The computer 2 sends operating commands to an actuator 3 and a hydraulic motor 4, which are components of the hydraulic system, to control them. That is, for the hydraulic motor 4, the number of revolutions is detected and the flow rate flowing to the hydraulic motor 4 is calculated based on the number of revolutions, and for the actuator 3, the stroke amount is detected and the time ratio of that stroke amount is calculated. The flow rate is determined by detecting the operating speed from the amount of change in the piston and integrating the pressure-receiving area of the piston with that speed. Then, the sum of these flow rates is set in advance and controlled so as to become the next prescribed discharge flow fQ. However, the specified discharge flow rate Q is corrected according to the rotation speed of the hydraulic pump 1.
さらに、フンピユータ２は油圧システムに流 ・れる流
量の合計と予め設定され次油圧ポンプの規定の吐出流Ｉ
Ｑとが一致したときの油圧ポンプの吐出圧力Ｐが図に示
す規定値Ｒ−Ｐ−の範囲内Ｂ≦Ｐ≦Ｐ、Ｋ ６るか否か
を判定し、吐出圧力Ｐが予め設定された規定値の範囲か
ら外れている場合は油圧ポンプ１の性能が劣化している
という情報を出力する。従って、本実施例に係る油圧シ
ステムに於込ては油圧ポンプを油圧システムに装着した
ままで定期的或いは始動時などに油圧ポンプ単体の性能
点検を、即ちビルトインテストを容易に行うことができ
る。Furthermore, the pump unit 2 calculates the total amount of flow flowing into the hydraulic system and the predetermined discharge flow I of the hydraulic pump.
It is determined whether the discharge pressure P of the hydraulic pump when Q coincides with B≦P≦P, K6 is within the range of the specified value RP- shown in the figure, and the discharge pressure P is set in advance. If the value is outside the specified value range, information indicating that the performance of the hydraulic pump 1 has deteriorated is output. Therefore, in the hydraulic system according to this embodiment, the performance of the hydraulic pump itself can be easily inspected periodically or at the time of startup, that is, a built-in test can be easily performed while the hydraulic pump is attached to the hydraulic system.
本発明に係る油圧システムは前記の通シ構成されており
、油圧〆ンプを油圧システムから取り外すことなく油圧
ポンプ単体の性能点検が容易にできるので、油圧ポンプ
の性能の劣化や故障によるシステムダウンが未然忙防止
されるなどの効果が奏せられる。The hydraulic system according to the present invention has the above-mentioned through-hole configuration, and the performance of the hydraulic pump itself can be easily inspected without removing the hydraulic pump from the hydraulic system, thereby preventing system downtime due to deterioration of hydraulic pump performance or failure. This will have the effect of preventing you from being too busy.
第１図は本発明の一実施例に係る油圧システムのスケマ
チイック図、第２図はその油圧ポンプの性能特性図であ
る。
ｌ・・・油圧ポンプ、 ２・・・コンピュータ、３・
・・アクチュエータ、 ４・・・油圧モータ、 ５
・・・圧力センサ。FIG. 1 is a schematic diagram of a hydraulic system according to an embodiment of the present invention, and FIG. 2 is a performance characteristic diagram of the hydraulic pump. l...Hydraulic pump, 2...Computer, 3.
...Actuator, 4...Hydraulic motor, 5
...Pressure sensor.
Claims (1)
器と、上記油圧ポンプ以外の当該油圧システムの構成品
を制御して上記油圧ポンプの流量の合計を予め設定され
た規定値にするとともに上記検出器により検出された吐
出圧力が予め規定された吐出圧力の範囲内にあるか否か
を判定するコンピュータとを備えてなることを特徴とす
る油圧システム。A hydraulic pump, a detector for detecting the discharge pressure of the hydraulic pump, and components of the hydraulic system other than the hydraulic pump are controlled to bring the total flow rate of the hydraulic pump to a preset specified value, and the A hydraulic system comprising: a computer that determines whether the discharge pressure detected by the detector is within a predefined discharge pressure range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11049788A JPH01285682A (en) | 1988-05-09 | 1988-05-09 | Hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11049788A JPH01285682A (en) | 1988-05-09 | 1988-05-09 | Hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01285682A true JPH01285682A (en) | 1989-11-16 |
Family
ID=14537258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11049788A Pending JPH01285682A (en) | 1988-05-09 | 1988-05-09 | Hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01285682A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625580U (en) * | 1991-02-27 | 1994-04-08 | 株式会社荏原製作所 | Pump protector for pressurizer |
| US6938455B2 (en) * | 2001-08-27 | 2005-09-06 | Nsk Ltd. | Grease supply confirming device and method |
-
1988
- 1988-05-09 JP JP11049788A patent/JPH01285682A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625580U (en) * | 1991-02-27 | 1994-04-08 | 株式会社荏原製作所 | Pump protector for pressurizer |
| US6938455B2 (en) * | 2001-08-27 | 2005-09-06 | Nsk Ltd. | Grease supply confirming device and method |
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