JPH08226410A - Fairure detector for hydraulic device and the like, and detection method - Google Patents
Fairure detector for hydraulic device and the like, and detection methodInfo
- Publication number
- JPH08226410A JPH08226410A JP3270295A JP3270295A JPH08226410A JP H08226410 A JPH08226410 A JP H08226410A JP 3270295 A JP3270295 A JP 3270295A JP 3270295 A JP3270295 A JP 3270295A JP H08226410 A JPH08226410 A JP H08226410A
- Authority
- JP
- Japan
- Prior art keywords
- solenoid valve
- detection means
- detecting
- control device
- control
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、油圧或いは空圧装置
（以下「油圧装置等」という）の異常を検出する装置及
び方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for detecting an abnormality in a hydraulic or pneumatic device (hereinafter referred to as "hydraulic device").
【０００２】[0002]
【従来技術】図１は、油圧装置等に作動不良等の異常が
発生したときの点検方法の一例を示すもので、油圧装置
等に故障が発生したときには、先ず電磁弁を制御する信
号が送られているかどうかの調査を行い、制御信号が送
られている場合には、電磁弁の作動状態を点検する。こ
の点検により電磁弁が作動せず、電磁弁に異常があると
判明したときには、次に回路が短絡していないかどうか
の点検をテスター等を用いて行い、回路が短絡している
場合には、コイル部分の交換を行う一方、回路に異常が
ないときには、電磁弁スプール不良と断定し、電磁弁の
交換を行っていた。2. Description of the Related Art FIG. 1 shows an example of an inspection method when an abnormality such as a malfunction occurs in a hydraulic system. When a failure occurs in the hydraulic system, a signal for controlling a solenoid valve is first sent. If the control signal is sent, check the operating state of the solenoid valve. If the solenoid valve does not operate as a result of this inspection, and it is found that the solenoid valve is abnormal, then use a tester to check whether the circuit is short-circuited. While the coil portion was replaced, when there was no abnormality in the circuit, it was concluded that the solenoid valve spool was defective, and the solenoid valve was replaced.
【０００３】電磁弁に異常がない場合には次に、配管破
損及びポンプに異常がないかどうかを圧力計や目視等に
より調べ、配管やポンプに異常がない場合、アクチュエ
ータに異物噛み込み等がないかどうかを調べている。If there is no abnormality in the solenoid valve, then it is checked with a pressure gauge or visually to see if there is any damage to the piping or abnormality in the pump. If there is no abnormality in the piping or pump, foreign matter is caught in the actuator. I'm looking for it.
【０００４】[0004]
【発明が解決しようとする課題】油圧装置等に作動不良
等の異常が発生した場合、上述するような方法で原因箇
所を断定するのには多くの時間と人手を必要とする。本
発明は、油圧装置等に異常が発生した場合、容易に故障
箇所を知ることができるような装置及び方法を提供する
ことを目的とする。When an abnormality such as a malfunction occurs in the hydraulic system or the like, it takes a lot of time and manpower to determine the cause point by the above-mentioned method. It is an object of the present invention to provide a device and method that can easily find a failure location when an abnormality occurs in a hydraulic device or the like.
【０００５】[0005]
【課題の解決手段】本発明の異常検出装置はそのため、
電磁弁と、電磁弁に開閉のための制御信号を出力する制
御装置と、アクチュエータとを有する油圧装置等に、制
御装置から電磁弁に発信される制御信号の検出手段、電
磁弁の制御回路の電流検出手段及びヒューズトリップ検
出手段、電磁弁の入側及び出側に設けられる圧油或いは
圧縮空気の圧力検出手段のうち、少なくとも一つ以上を
設けると共に、上記制御装置が上記検出手段からの検出
信号に基づいて異常の有無を判定し、その出力により異
常表示する表示手段を設けたことを特徴とする。Therefore, the abnormality detection device of the present invention is, therefore,
A solenoid valve, a control device that outputs a control signal for opening and closing the solenoid valve, a hydraulic device having an actuator, and the like, detecting means for a control signal transmitted from the control device to the solenoid valve, and a control circuit for the solenoid valve. At least one of current detection means, fuse trip detection means, pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve is provided, and the control device detects from the detection means. It is characterized in that display means is provided for determining whether or not there is an abnormality on the basis of the signal and displaying the abnormality by the output thereof.
【０００６】本発明の異常検出方法は、電磁弁と、電磁
弁に開閉のための制御信号を出力する制御装置と、アク
チュエータとを有する油圧装置等に、制御装置から電磁
弁に発信される制御信号の検出手段、電磁弁の制御回路
の電流検出手段及びヒューズトリップ検出手段、電磁弁
の入側及び出側に設けられる圧油或いは圧縮空気の圧力
検出手段のうち、少なくとも制御装置から電磁弁に発信
される制御信号を検出する検出手段を設け、制御装置の
電磁弁切換えのための入力にもかゝわらず、検出手段が
電磁弁への制御信号を検出しないとき、制御装置が制御
系異常と判定し、表示手段に制御系異常を出力すること
を特徴とする。According to the abnormality detecting method of the present invention, a control device transmits a control signal to a solenoid valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the solenoid valve, and an actuator. Of the signal detecting means, the current detecting means and the fuse trip detecting means of the control circuit of the solenoid valve, the pressure oil or compressed air pressure detecting means provided on the inlet side and the outlet side of the solenoid valve, at least from the control device to the solenoid valve. When the detecting device does not detect the control signal to the solenoid valve in spite of the input for switching the solenoid valve of the control device, the detecting device detects the transmitted control signal. And outputs a control system abnormality to the display means.
【０００７】別の検出方法は、電磁弁と、電磁弁に開閉
のための制御信号を出力する制御装置と、アクチュエー
タとを有する油圧装置等に、制御装置から電磁弁に発信
される制御信号の検出手段、電磁弁の制御回路の電流検
出手段及びヒューズトリップ検出手段、電磁弁の入側及
び出側に設けられる圧油或いは圧縮空気の圧力検出手段
のうち、少なくとも制御装置から電磁弁に発信される制
御信号を検出する検出手段を設けると共に、電磁弁の制
御回路の電流を検出する検出手段を設け、制御装置に制
御信号検出手段から制御信号の検出が入力されても、電
流検出手段から入力された電流値が０であるとき、制御
装置が電磁弁の制御回路異常と判定し、表示手段に制御
回路異常を出力することを特徴とする。Another detection method is to control a control signal transmitted from a control device to a solenoid valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the solenoid valve, and an actuator. Of the detection means, the current detection means and the fuse trip detection means of the control circuit of the solenoid valve, the pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve, at least the control device transmits to the solenoid valve. In addition to the detection means for detecting the control signal, the detection means for detecting the current in the control circuit of the solenoid valve is provided, and even if the control signal detection is input to the control device from the control signal detection means, the control signal is input from the current detection means. When the applied current value is 0, the control device determines that the control circuit of the solenoid valve is abnormal, and outputs the control circuit abnormality to the display means.
【０００８】別の方法では、上記方法の電流検出手段が
電流検出リレーによってＯＮ−ＯＦＦされるスイッチ
で、電流検出の有無によってＯＮ−ＯＦＦに切換えられ
るようにされる。更に別の検出方法は、電磁弁と、電磁
弁に開閉のための制御信号を出力する制御装置と、アク
チュエータとを有する油圧装置等に、制御装置から電磁
弁に発信される制御信号の検出手段、電磁弁の制御回路
の電流検出手段及びヒューズトリップ検出手段、電磁弁
の入側及び出側に設けられる圧油或いは圧縮空気の圧力
検出手段のうち、少なくとも電磁弁の制御回路の電流を
検出する検出手段を設け、制御装置により電磁弁切換時
の電流値を監視し、立上げ後、定常電流に達するまでの
時間Ｔが予め設定した時間Ｔ1 を越えたとき、制御装置
が電磁弁スプール動作異常傾向と判定し、表示手段に電
磁弁スプール動作異常傾向を出力することを特徴とす
る。According to another method, the current detecting means of the above method is a switch which is turned on and off by a current detection relay and is turned on and off depending on the presence or absence of current detection. Still another detection method is a detection means for detecting a control signal transmitted from a control device to a solenoid valve to a hydraulic device having an solenoid valve, a control device for outputting a control signal for opening and closing the solenoid valve, and an actuator. At least the current of the solenoid valve control circuit is detected from among the current detection means and fuse trip detection means of the solenoid valve control circuit, and the pressure oil or compressed air pressure detection means provided on the inlet side and outlet side of the solenoid valve. When the control device monitors the current value at the time of switching the solenoid valve and the time T until the steady current is reached exceeds the preset time T 1 by the control device, the control device causes the solenoid valve spool operation. It is characterized in that it is judged as an abnormal tendency, and the electromagnetic valve spool operation abnormal tendency is output to the display means.
【０００９】更に別の検出方法は、電磁弁と、電磁弁に
開閉のための制御信号を出力する制御装置と、アクチュ
エータとを有する油圧装置等に、制御装置から電磁弁に
発信される制御信号の検出手段、電磁弁の制御回路の電
流検出手段及びヒューズトリップ検出手段、電磁弁の入
側及び出側に設けられる圧油或いは圧縮空気の圧力検出
手段のうち、少なくともヒューズトリップ検出手段を設
け、該検出手段からヒューズトリップＯＮが入力された
とき、制御装置が表示手段に電磁弁回路短絡を出力する
ことを特徴とする。Still another detecting method is a control signal transmitted from a control device to a solenoid valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the solenoid valve, and an actuator. Of the electromagnetic valve control circuit current detection means and fuse trip detection means, pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve, at least fuse trip detection means is provided, When the fuse trip ON is input from the detection means, the control device outputs a solenoid valve circuit short circuit to the display means.
【００１０】他の検出方法は、電磁弁と、電磁弁に開閉
のための制御信号を出力する制御装置と、アクチュエー
タとを有する油圧装置等に、制御装置から電磁弁に発信
される制御信号の検出手段、電磁弁の制御回路の電流検
出手段及びヒューズトリップ検出手段、電磁弁の入側及
び出側に設けられる圧油或いは圧縮空気の圧力検出手段
のうち、少なくとも制御装置から電磁弁に発信される制
御信号を検出する検出手段と、電磁弁の制御回路の電流
検出手段と、電磁弁の入側及び出側における圧油或いは
圧縮空気の圧力検出手段を設け、制御装置に制御信号検
出手段から検出信号が入力され、かつ電流検出手段から
入力された電流値が０以外であり、しかも入側の圧力検
出手段から入力された圧力が設定値を越えても、出側の
圧力検出手段から入力された圧力が設定値を越えないと
きに、制御装置が電磁弁スプール異常と判定し、表示手
段に電磁弁スプール異常を出力することを特徴とする。Another detection method is to control a control signal transmitted from a control device to a solenoid valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the solenoid valve, and an actuator. Of the detection means, the current detection means and the fuse trip detection means of the control circuit of the solenoid valve, and the pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve, at least the control device transmits to the solenoid valve. A control means for detecting the control signal, a current detection means for the control circuit of the solenoid valve, and a pressure oil or compressed air pressure detection means on the inlet side and the outlet side of the solenoid valve are provided. Even if the detection signal is input, the current value input from the current detection means is other than 0, and the pressure input from the input pressure detection means exceeds the set value, the output pressure detection means outputs it. When force pressure does not exceed the set value, the control device determines that the solenoid valve spool abnormal, and outputs a solenoid valve spool abnormality on the display means.
【００１１】別の方法では、上記方法における圧力検出
手段が設定圧に達するとＯＮになり、設定圧以下になる
と、ＯＦＦになる圧力スイッチであり、入側の圧力スイ
ッチからＯＮ信号が、出側の圧力スイッチからＯＦＦ信
号が入力されると、制御装置が表示手段に電磁弁スプー
ル異常を出力するようにされる。更に別の方法では、上
記方法の電流検出手段が電流検出リレーによってＯＮ−
ＯＦＦされるスイッチで、電流検出の有無によってＯＮ
−ＯＦＦに切換えられるようにされる。In another method, the pressure detecting means in the above method is turned on when the pressure reaches a set pressure and turned off when the pressure is lower than the set pressure. When the OFF signal is input from the pressure switch of No. 3, the control device outputs the solenoid valve spool abnormality to the display means. In still another method, the current detection means of the above method is turned on by a current detection relay.
It is a switch that is turned off, and it turns on depending on whether or not current is detected.
-It can be turned off.
【００１２】[0012]
【実施例】電磁弁１の入側及び出側には、圧力検出手段
としての圧力計２及び３が設けられ、計測した圧力値が
制御装置４に入力されるようにしてある。電磁弁１のコ
イルは、ヒューズＣＰ５と、リレー６の励磁によってＯ
Ｎ、励磁の解除によってＯＦＦとなるスイッチ７と、電
源とに直列に接続され、ヒューズ５がトリップすると、
ヒューズトリップ検出手段としてのスイッチ８がＯＮと
なって、その出力が制御装置４に入力されるようになっ
ており、リレー６は起動スイッチからのＯＮ入力に基づ
いて制御装置４より発信される制御信号によって検出手
段を構成するスイッチ１１がＯＮになると励磁され、ス
イッチ１１のＯＮにより、その出力が制御装置４に入力
されるようにしてある。Embodiments Pressure gauges 2 and 3 as pressure detecting means are provided on the inlet side and outlet side of a solenoid valve 1, and the measured pressure value is input to a control device 4. The coil of the solenoid valve 1 becomes O by the excitation of the fuse CP5 and the relay 6.
N, the switch 7 which is turned off by releasing the excitation and the power source are connected in series, and when the fuse 5 trips,
The switch 8 as fuse trip detecting means is turned on, and its output is input to the control device 4, and the relay 6 is a control signal transmitted from the control device 4 based on the ON input from the start switch. When the switch 11 constituting the detecting means is turned on by the signal, it is excited, and when the switch 11 is turned on, its output is input to the control device 4.
【００１３】電磁弁１を含む回路に流れる電流は、電流
検出手段としての電流検出器１２によって検出され、電
流が検出されると、リレー１３が励磁されてスイッチ１
４がＯＮとなり、その出力が制御装置４に入力され、ま
た電流検出器１２によって検出された電流値が制御装置
４に入力されるようにしてある。制御装置４は、スイッ
チ８がＯＮになると、その出力により表示手段としての
ＣＲＴ１５に電磁弁回路短絡を表示し、起動指令のＯＮ
入力にもかゝわらず、スイッチ１１のＯＮによる入力が
ないと、ＣＲＴ１５に制御系異常と出力する。A current flowing in a circuit including the solenoid valve 1 is detected by a current detector 12 as a current detecting means. When the current is detected, the relay 13 is excited and the switch 1 is activated.
4 is turned on, its output is input to the control device 4, and the current value detected by the current detector 12 is input to the control device 4. When the switch 8 is turned on, the control device 4 displays a solenoid valve circuit short circuit on the CRT 15 as a display means by the output, and turns on the start command.
Even if it is an input, if there is no input by turning on the switch 11, the control system abnormality is output to the CRT 15.
【００１４】制御装置４はまた、スイッチ１１のＯＮに
よる入力があっても、スイッチ１４のＯＮによる入力が
ないと、ＣＲＴ１５に電磁弁回路異常、すなわち断線と
出力し、スイッチ１１及び１４のＯＮによる入力があ
り、しかも入側の圧力計２によって検出された圧力が設
定値以上であっても、出側の圧力計３によって検出され
た圧力が設定値以下であるとき、ＣＲＴ１５に電磁弁の
スプール動作異常と出力する。The control device 4 also outputs an electromagnetic valve circuit abnormality, that is, disconnection, to the CRT 15 even if there is an input by turning on the switch 11 but no input by turning on the switch 14, and the switches 11 and 14 turn on. Even if there is an input and the pressure detected by the pressure gauge 2 on the input side is equal to or higher than the set value, but the pressure detected by the pressure gauge 3 on the output side is equal to or lower than the set value, the spool of the solenoid valve is attached to the CRT 15. Output as abnormal operation.
【００１５】一方、電磁弁切換時にスプールを動作する
際には、図３に示すように、起動時に大きな立上がり電
流が流れ、切換後、定常電流ＩO に維持される。図３の
実線は正常時における電磁弁切換時の電流曲線を示すも
ので、リレー６の励磁によりスイッチ７がＯＮになって
ＴO 時間に達すると、定常電流ＩO になる状態を示して
いる。制御装置４には、ＴO 時間より若干余裕を持たせ
た設定時間Ｔ1 が予め入力されており、電流検出器１２
によって検出された電流が実際に定常電流ＩOになった
時間Ｔがタイマー１６によってカウントされ、その時間
Ｔが設定時間Ｔ 1 を越えたときには、制御装置４よりＣ
ＲＴ１５に電磁弁スプール異常傾向と出力する。On the other hand, the spool is operated when switching the solenoid valve.
In this case, as shown in Fig. 3, a large power
Flow, and after switching, steady current IOMaintained at. Of FIG.
The solid line shows the current curve when the solenoid valve is switched under normal conditions.
Therefore, the switch 7 is turned on by the excitation of the relay 6.
TOWhen the time is reached, the steady current IOShowing the state
There is. The controller 4 has a TOAllow some time to spare
Set time T1Is previously input, and the current detector 12
The current detected by is actually the steady current IOBecame
The time T is counted by the timer 16 and the time
T is the set time T 1When the value exceeds C,
The solenoid valve spool abnormal tendency is output to RT15.
【００１６】図４は、上述するような制御装置４への入
力条件と出力との関係を示す。FIG. 4 shows the relationship between the input condition and the output to the control device 4 as described above.
【００１７】[0017]
【発明の効果】本発明は以上のように構成され、次のよ
うな効果を奏する。請求項１記載の装置によれば、油圧
装置等に制御系異常、電磁弁回路異常、スプール動作異
常、電磁弁回路短絡、電磁弁スプール動作異常傾向等の
うち、少なくとも一つ以上が生じたときには、表示手段
の表示によって直ちに、かつ容易にその異常箇所を知る
ことができる。The present invention is configured as described above and has the following effects. According to the apparatus of claim 1, when at least one of the control system abnormality, the solenoid valve circuit abnormality, the spool operation abnormality, the solenoid valve circuit short circuit, the solenoid valve spool operation abnormality tendency, etc. occurs in the hydraulic device or the like, The display of the display means makes it possible to immediately and easily know the abnormal portion.
【００１８】油圧装置等の制御系に異常があった場合に
は、請求項２記載の方法により、電磁弁の制御回路に異
常があった場合には、請求項３又は８記載の方法によ
り、電磁弁スプールの動作に異常傾向があるようなとき
には請求項４記載の方法により、電磁弁の回路が短絡し
たときには請求項５記載の方法により、また電磁スプー
ルに異常があるときには請求項６〜８記載の方法によ
り、それぞれその異常を直ちに、かつ容易に知ることが
できる。When there is an abnormality in the control system of the hydraulic device or the like, the method according to claim 2 is used. When there is an abnormality in the control circuit of the solenoid valve, the method according to claim 3 or 8 is used. When the operation of the solenoid valve spool tends to be abnormal, the method according to claim 4 is used. When the circuit of the solenoid valve is short-circuited, the method according to claim 5 is used. By the method described, each abnormality can be immediately and easily known.
【図１】 従来の異常検出方法のプロセスを示す図。FIG. 1 is a diagram showing a process of a conventional abnormality detection method.
【図２】 本発明に係わる異常検出装置のブロック図。FIG. 2 is a block diagram of an abnormality detection device according to the present invention.
【図３】 電磁弁切換時の電流曲線を示す図。FIG. 3 is a diagram showing a current curve when switching solenoid valves.
【図４】 制御装置への入力条件と出力との関係を示す
図。FIG. 4 is a diagram showing a relationship between an input condition and an output to the control device.
１・・電磁弁 ２、３・・圧力計 ４・・制御装置 ５・・ヒューズ ６、１３・・リレー ７、８、１１、１４
・・スイッチ １２・・電流検出器 １５・・ＣＲＴ1 ... Solenoid valve 2, 3 ... Pressure gauge 4 ... Control device 5 ... Fuse 6, 13 ... Relay 7, 8, 11, 14
..Switches 12 ... Current detectors 15 ... CRTs
フロントページの続き (72)発明者 片山 俊明 広島県呉市昭和町11番１号 日新製鋼株式 会社呉製鉄所内Front Page Continuation (72) Inventor Toshiaki Katayama 11-1 Showa-cho, Kure-shi, Hiroshima Nisshin Steel Co., Ltd. Kure Steel Works
Claims (8)
号を出力する制御装置と、アクチュエータとを有する油
圧装置等に、制御装置から電磁弁に発信される制御信号
の検出手段、電磁弁の制御回路の電流検出手段及びヒュ
ーズトリップ検出手段、電磁弁の入側及び出側に設けら
れる圧油或いは圧縮空気の圧力検出手段のうち、少なく
とも一つ以上を設けると共に、上記制御装置が上記検出
手段からの検出信号に基づいて異常の有無を判定し、そ
の出力により異常表示する表示手段を設けたことを特徴
とする油圧装置等の異常検出装置。1. A means for detecting a control signal transmitted from a control device to an electromagnetic valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. At least one or more of the current detection means and the fuse trip detection means of the valve control circuit and the pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve are provided, and the control device is An abnormality detection device such as a hydraulic device, which is provided with display means for determining whether or not there is an abnormality on the basis of a detection signal from the detection means and displaying an abnormality based on the output thereof.
を出力する制御装置と、アクチュエータとを有する油圧
装置等に、制御装置から電磁弁に発信される制御信号の
検出手段、電磁弁の制御回路の電流検出手段及びヒュー
ズトリップ検出手段、電磁弁の入側及び出側に設けられ
る圧油或いは圧縮空気の圧力検出手段のうち、少なくと
も制御装置から電磁弁に発信される制御信号を検出する
検出手段を設け、制御装置の電磁弁切換えのための入力
にもかゝわらず、検出手段が電磁弁への制御信号を検出
しないとき、制御装置が制御系異常と判定し、表示手段
に制御系異常を出力することを特徴とする油圧装置等の
異常検出方法。2. A means for detecting a control signal transmitted from a control device to an electromagnetic valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. Of the current detection means and fuse trip detection means of the valve control circuit, and the pressure oil or compressed air pressure detection means provided on the inlet and outlet sides of the solenoid valve, at least the control signal transmitted from the control device to the solenoid valve is transmitted. When the detecting means is provided with a detecting means for detecting, and the detecting means does not detect the control signal to the solenoid valve in spite of the input for switching the solenoid valve of the controlling means, the control device judges that the control system is abnormal, and the displaying means A method for detecting an abnormality in a hydraulic device or the like, wherein the abnormality in the control system is output.
号を出力する制御装置と、アクチュエータとを有する油
圧装置等に、制御装置から電磁弁に発信される制御信号
の検出手段、電磁弁の制御回路の電流検出手段及びヒュ
ーズトリップ検出手段、電磁弁の入側及び出側に設けら
れる圧油或いは圧縮空気の圧力検出手段のうち、少なく
とも制御装置から電磁弁に発信される制御信号を検出す
る検出手段を設けると共に、電磁弁の制御回路の電流を
検出する検出手段を設け、制御装置に制御信号検出手段
から制御信号の検出が入力されても、電流検出手段から
入力された電流値が０であるとき、制御装置が電磁弁の
制御回路異常と判定し、表示手段に制御回路異常を出力
することを特徴とする油圧装置等の異常検出方法。3. A means for detecting a control signal transmitted from a control device to an electromagnetic valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. Of the current detection means and fuse trip detection means of the valve control circuit, and the pressure oil or compressed air pressure detection means provided on the inlet and outlet sides of the solenoid valve, at least the control signal transmitted from the control device to the solenoid valve is transmitted. In addition to providing the detection means for detecting, the detection means for detecting the current of the control circuit of the solenoid valve is provided, and even if the detection of the control signal is input to the control device from the control signal detection means, the current value input from the current detection means Is 0, the control device determines that the control circuit of the solenoid valve is abnormal, and outputs the control circuit abnormality to the display means.
号を出力する制御装置と、アクチュエータとを有する油
圧装置等に、制御装置から電磁弁に発信される制御信号
の検出手段、電磁弁の制御回路の電流検出手段及びヒュ
ーズトリップ検出手段、電磁弁の入側及び出側に設けら
れる圧油或いは圧縮空気の圧力検出手段のうち、少なく
とも電磁弁の制御回路の電流を検出する検出手段を設
け、制御装置により電磁弁切換時の電流値を監視し、立
上げ後、定常電流に達するまでの時間Ｔが予め設定した
時間Ｔ1 を越えたとき、制御装置が電磁弁スプール動作
異常傾向と判定し、表示手段に電磁弁スプール動作異常
傾向を出力することを特徴とする油圧装置等の異常検出
方法。4. A means for detecting a control signal transmitted from a control device to an electromagnetic valve, to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. Of the current detection means and fuse trip detection means of the valve control circuit, the pressure oil or compressed air pressure detection means provided on the inlet side and the outlet side of the solenoid valve, at least a detection means for detecting the current of the solenoid valve control circuit. The current value at the time of switching the solenoid valve is monitored by the control device, and when the time T until the steady current is reached after the start-up exceeds the preset time T 1 , the control device causes the solenoid valve spool operation abnormal tendency. The method for detecting an abnormality in a hydraulic device or the like is characterized by outputting the electromagnetic valve spool operation abnormality tendency to the display means.
号を出力する制御装置と、アクチュエータとを有する油
圧装置等に、制御装置から電磁弁に発信される制御信号
の検出手段、電磁弁の制御回路の電流検出手段及びヒュ
ーズトリップ検出手段、電磁弁の入側及び出側に設けら
れる圧油或いは圧縮空気の圧力検出手段のうち、少なく
ともヒューズトリップ検出手段を設け、該検出手段から
ヒューズトリップＯＮが入力されたとき、制御装置が表
示手段に電磁弁回路短絡を出力することを特徴とする油
圧装置等の異常検出方法。5. A means for detecting a control signal transmitted from a control device to an electromagnetic valve to a hydraulic device having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. Of the current detection means and fuse trip detection means of the valve control circuit, the pressure oil or compressed air pressure detection means provided on the inlet and outlet sides of the solenoid valve, at least fuse trip detection means is provided, and the fuse is detected from the detection means. A method for detecting an abnormality in a hydraulic device or the like, wherein the control device outputs a solenoid valve circuit short circuit to the display means when trip ON is input.
号を出力する制御装置と、アクチュエータとを有する油
圧装置等に、制御装置から電磁弁に発信される制御信号
の検出手段、電磁弁の制御回路の電流検出手段及びヒュ
ーズトリップ検出手段、電磁弁の入側及び出側に設けら
れる圧油或いは圧縮空気の圧力検出手段のうち、少なく
とも制御装置から電磁弁に発信される制御信号を検出す
る検出手段と、電磁弁の制御回路の電流検出手段と、電
磁弁の入側及び出側における圧油或いは圧縮空気の圧力
検出手段を設け、制御装置に制御信号検出手段から検出
信号が入力され、かつ電流検出手段から入力された電流
値が０以外であり、しかも入側の圧力検出手段から入力
された圧力が設定値を越えても、出側の圧力検出手段か
ら入力された圧力が設定値を越えないときに、制御装置
が電磁弁スプール異常と判定し、表示手段に電磁弁スプ
ール異常を出力することを特徴とする油圧装置等の異常
検出方法。6. A means for detecting a control signal transmitted from a control device to an electromagnetic valve to a hydraulic device or the like having an electromagnetic valve, a control device for outputting a control signal for opening and closing the electromagnetic valve, and an actuator, and an electromagnetic device. Of the current detection means and fuse trip detection means of the valve control circuit, and the pressure oil or compressed air pressure detection means provided on the inlet and outlet sides of the solenoid valve, at least the control signal transmitted from the control device to the solenoid valve is transmitted. Detecting means for detecting, current detecting means for control circuit of solenoid valve, pressure detecting means for pressure oil or compressed air at inlet side and outlet side of solenoid valve are provided, and the detecting signal is inputted from the control signal detecting means to the control device. And the current value input from the current detection means is other than 0 and the pressure input from the pressure detection means on the input side exceeds the set value, the pressure input from the pressure detection means on the output side remains A method for detecting an abnormality of a hydraulic device, wherein the control device determines that the solenoid valve spool is abnormal when the set value is not exceeded and outputs the solenoid valve spool abnormality to the display means.
に達するとＯＮになる圧力スイッチであり、入側の圧力
スイッチからＯＮ信号が、出側の圧力スイッチからＯＦ
Ｆ信号が入力されると、制御装置が表示手段に電磁弁ス
プール異常を出力するようにされる請求項７記載の油圧
装置等の異常検出方法。7. A pressure switch that is turned on when the pressure detecting means in the above method reaches a set pressure, and an ON signal is sent from the pressure switch on the input side and an OF signal is sent from the pressure switch on the output side.
The abnormality detection method for a hydraulic device or the like according to claim 7, wherein the control device outputs an abnormality of the solenoid valve spool to the display means when the F signal is input.
ーによってＯＮ−ＯＦＦされるスイッチで、電流検出の
有無によってＯＮ−ＯＦＦに切換えられるようにされる
請求項３又は７記載の油圧装置等の異常検出方法。8. A hydraulic system or the like according to claim 3, wherein the current detecting means of the method is a switch which is turned on and off by a current detecting relay and is turned on and off depending on the presence or absence of current detection. Anomaly detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3270295A JPH08226410A (en) | 1995-02-21 | 1995-02-21 | Fairure detector for hydraulic device and the like, and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3270295A JPH08226410A (en) | 1995-02-21 | 1995-02-21 | Fairure detector for hydraulic device and the like, and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08226410A true JPH08226410A (en) | 1996-09-03 |
Family
ID=12366191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3270295A Withdrawn JPH08226410A (en) | 1995-02-21 | 1995-02-21 | Fairure detector for hydraulic device and the like, and detection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08226410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310282A (en) * | 2001-04-12 | 2002-10-23 | Honda Motor Co Ltd | Abnormality detecting device and method for linear solenoid valve, and hydraulic device using the same |
-
1995
- 1995-02-21 JP JP3270295A patent/JPH08226410A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310282A (en) * | 2001-04-12 | 2002-10-23 | Honda Motor Co Ltd | Abnormality detecting device and method for linear solenoid valve, and hydraulic device using the same |
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