JPS60127944A - Oil-temperature monitor - Google Patents
Oil-temperature monitorInfo
- Publication number
- JPS60127944A JPS60127944A JP23361183A JP23361183A JPS60127944A JP S60127944 A JPS60127944 A JP S60127944A JP 23361183 A JP23361183 A JP 23361183A JP 23361183 A JP23361183 A JP 23361183A JP S60127944 A JPS60127944 A JP S60127944A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- oil
- machine
- time
- change
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は油圧作動機械の作動油の油温の異常上昇を監
視する油温監視装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil temperature monitoring device for monitoring an abnormal rise in the temperature of hydraulic oil in a hydraulically operated machine.
従来、精度を要求される油圧作動機械では作動油の油温
を常に一定にする様、油温を検出して低過ぎる時にはヒ
ータで温め、高過ぎる時には冷却ファンを働かせて冷や
すといった手段を講じている。またこのような機能のな
い機械でも、作動油の劣化を防ぐために油温の許容最高
温度を設定しＣおき、油温がそれ以上になる時には冷却
ファンを働かせて油温を下げ、あるいは機械を止めると
いった処置を行なっている。ところが、前者の場合には
油温を一定に保てる反面、油温上昇にＪ：る異常の検出
ができない問−がある。そして後者の場合には油温が許
容最高温度に上昇しないうちは異常の検出ができない問
題がある。Conventionally, in hydraulic machines that require precision, measures have been taken to keep the temperature of the hydraulic oil constant at all times, such as detecting the oil temperature and heating it with a heater when it is too low, and using a cooling fan to cool it when it is too high. There is. In addition, even in machines without such a function, in order to prevent deterioration of the hydraulic oil, the maximum allowable oil temperature is set at C, and when the oil temperature exceeds this temperature, a cooling fan is activated to lower the oil temperature, or the machine is stopped. We are taking measures to stop it. However, in the former case, although the oil temperature can be kept constant, there is a problem in that it is not possible to detect abnormalities caused by a rise in the oil temperature. In the latter case, there is a problem in that the abnormality cannot be detected until the oil temperature rises to the maximum allowable temperature.
この発明は、このような従来の問題に鑑みてなされたも
のであり、記憶装置に記憶されている１常運転時の油温
と気温との温度差の時間変化に適宜時点にお番プる現実
の油温と気温との温度差の時間変化を比較し、現実の温
度差の変化分が異常に大きい時に機械の異常として異常
信号を発するようにし、比較的低い温度において機械の
異常が検出（・きる？ｌＩＩ温蕎視装置を提供すること
を目的とする。This invention has been made in view of such conventional problems, and is based on the time change of the temperature difference between the oil temperature and the air temperature during normal operation, which is stored in a storage device. Compares the temporal change in the temperature difference between the actual oil temperature and air temperature, and when the change in the actual temperature difference is abnormally large, an abnormality signal is issued as a machine abnormality, and a machine abnormality is detected at a relatively low temperature. (・The purpose of the present invention is to provide a thermal imaging device.
以下、図に示づ一実施例について詳説する。第１図にこ
の発明の一実施例の油圧式シャー１を示し、作動油タン
ク３に油温センサ５が設置され、シャー１の外側に気温
レン４）７が設置され−Ｃいる。Hereinafter, one embodiment shown in the drawings will be explained in detail. FIG. 1 shows a hydraulic shear 1 according to an embodiment of the present invention, in which an oil temperature sensor 5 is installed in a hydraulic oil tank 3, and a temperature sensor 4) 7 is installed outside the shear 1.
第２図はこれらａｆｔ渇センリ５ど気温センサ７との温
度他日の処理装置部分を示し、油温センサ５と気温１了
ンリ７どはＡ ｙ’ Ｄ交換装置９に接続され（いる。FIG. 2 shows a part of the temperature processing device including the oil temperature sensor 5 and the temperature sensor 7, and the oil temperature sensor 5 and the temperature sensor 7 are connected to the Ay'D exchange device 9.
そし−ここの変換装置９は中央演算処理装置１１に接続
されている。この中央演算処理装置１１には、さらに記
憶装置１３と計時装置１５とが接続され、まｌｃ出力イ
ンターフエイス１７も接続されＣいる。The conversion device 9 here is connected to the central processing unit 11. A storage device 13 and a clock device 15 are further connected to the central processing unit 11, and an LC output interface 17 is also connected thereto.
ここで、油圧作動機械は一般にその連続稼動により時間
と共に作動油の油温が上昇する。その油ｌＩ＋ａの」〕
４カーブは、稼＠時間を横軸にとり、油温ど温湿との温
度差Ｔｉ を縦軸にとるとぎ第３図に示づ−ようなもの
になる。そこで、機械の作動後一定時間経過毎の温度差
の時間変化△Ｔｉ を、１−１時点とｉ時点との温度差
から△Ｔｉ ＝Ｔｉ −１−ｉ−Ｎとして計算し、記憶
装置１３に比較値として記憶させである。尚、この比較
値は機械の種類や住棟、ざらにユーザーの使用状態によ
って変化するものであるから、実験的に定める必要があ
る。Generally, in a hydraulically operated machine, the temperature of the hydraulic oil increases over time due to its continuous operation. of that oil lI+a']
The four curves are as shown in FIG. 3, where the horizontal axis represents operating hours and the vertical axis represents the temperature difference Ti between oil temperature and humidity. Therefore, the time change △Ti in the temperature difference every certain period of time after machine operation is calculated from the temperature difference between time 1-1 and time i as △Ti = Ti -1-i-N, and stored in the storage device 13. It is stored as a comparison value. Note that this comparison value changes depending on the type of machine, the building in which it is lived, and the usage conditions of the user, so it must be determined experimentally.
油温センサ５と気温センナ７とによるｈ１測温度信号は
、８１時装置１５により定められた一定時間毎、例えば
３０分毎にＡ／Ｄ変換装置９を経て中央演算処理装置１
１に入力され、各時点１におりる温度差ｔ１が算出され
る。そして、この温度差ｔ１が記憶装置１３に記憶され
る。The h1 temperature signal from the oil temperature sensor 5 and the air temperature sensor 7 is sent to the central processing unit 1 via the A/D converter 9 at regular intervals determined by the 81 o'clock device 15, for example every 30 minutes.
1, and the temperature difference t1 at each time point 1 is calculated. This temperature difference t1 is then stored in the storage device 13.
中央演算処理装置１１はさらに、両センサ５．７からの
温度信号を処理して温度差ｔ、を算出する時、記憶装置
１３に記憶されている前回のｉ−７時点の温度差［１−
Ｉと比較し、油温上昇の時間変化分△ｔｉ （＝ｔｉ−
ｔ、−ｌ）をも算ｆｉｉ？ｌる。そして、この油温上昇
の時間変化△［、を記憶装置１３に予め記憶されている
前記の正當時の油温上昇の比較値へＴｉ と比較し、△
ｔ１が△Ｌ より大きい時に機械に異常が発生している
ものと判断し、出力インターフェイス１７を介して機械
の非常停止や異常警報の発令などを行なう、
こうしで、中央演算処理装置１１は計時装置１５が計時
する一定時間経過毎に上記の△（、と△Ｌとの比較をな
し、油温の異常上昇を監視するのＣある。When the central processing unit 11 processes the temperature signals from both sensors 5.7 to calculate the temperature difference t, the central processing unit 11 further calculates the temperature difference [1-
Compared to I, the time change of oil temperature rise △ti (=ti-
t, -l) also calculated fii? Ill. Then, this time change in oil temperature rise △
When t1 is larger than △L, it is determined that an abnormality has occurred in the machine, and an emergency stop of the machine or an abnormality alarm is issued via the output interface 17. In this way, the central processing unit 11 keeps time. The device 15 compares the above △(, and △L) every time a certain period of time elapses, and monitors for an abnormal rise in oil temperature.
この発明は、作動油の油温と周囲の気温とを測定し、そ
の温度差の時間変化を演算して正常運転状態Ｃの温度差
の時間変化と比較し、油室の異常上背を検知しく榔械の
異常信号を発するものなので、油温を常時監視しておく
ことができると共に油温自体が低い時であっても油温の
異常な上置傾向を察知りることににり機械の異常を発見
することがＣき、１幾械の異帛を早期に発見できる特長
を右りる。This invention measures the temperature of hydraulic oil and the ambient air temperature, calculates the change in temperature difference over time, and compares it with the change in temperature difference in normal operating state C over time to detect an abnormal upper back of the oil chamber. Since it emits an abnormal signal for the machine, it is possible to constantly monitor the oil temperature, and even when the oil temperature itself is low, it is possible to detect abnormal upward trends in the oil temperature. It has the advantage of being able to detect abnormalities in the machine at an early stage.
イ１１図はこの発明の一実施例の用いられている？１ｌ
ＩＪＪ５式シ（１−の概略側面図、第２図は同上実施例
のブ［１ツク図、第３図は同上で用いられる油温上昇モ
デルカーブの一例である。
３・・・作動油タンク、５・・・油温センサ、７・・・
気温センサ、９・・・Ａ／Ｄ変換装置１１・・・中央演
算処理装置、１３・・・記憶装置、１５・・・計時装置
。
第１図
１
第３図
４隻づ動部間（）−１）Is Figure 11 used for one embodiment of this invention? 1l
IJJ5 type (1-) schematic side view, Figure 2 is a block diagram of the same example as above, Figure 3 is an example of the oil temperature rise model curve used in the same example. 3... Hydraulic oil tank , 5... Oil temperature sensor, 7...
Temperature sensor, 9...A/D conversion device 11...Central processing unit, 13...Storage device, 15...Clock device. Figure 1 Figure 3 Between the four moving parts ()-1)
Claims (1)
動機械の外周部分の温度（気温）を計測す゛る気温セン
サ、作動油の温度（油温）を計測する油温レンサ、記憶
装置、計時装置及び中央演算処理装置を備え、前記記憶
装置は前記油圧作動機械の正常運転時におりる油温と気
温との温度差の時間変化△Ｔを記憶し°Ｃおり、前記中
央演算処理装置は前記８１時装置が計時する適宜時間に
おりる前記油温センサと気温センサとにより計測された
温度の温度差の時間変化△ｔを算出して前記記憶装置に
記憶されている対応時点の前記温度差の時間変化へＴと
比較し、その実測温度差の時間変化△Ｌが異常に大きい
時に異常信号を発信することを特徴とする油温監視装置
。An oil temperature monitoring device for a hydraulically operated machine, which includes an air temperature sensor that measures the temperature (air temperature) of the outer peripheral portion of the hydraulically operated machine, an oil temperature sensor that measures the temperature (oil temperature) of hydraulic oil, a storage device, a timing device, and The central processing unit is provided with a central processing unit, the storage device stores the time change ΔT of the temperature difference between the oil temperature and the air temperature during normal operation of the hydraulically operated machine, and the central processing unit stores the time change ΔT of the temperature difference between the oil temperature and the air temperature during normal operation of the hydraulic machine. Calculate the time change Δt of the temperature difference between the temperatures measured by the oil temperature sensor and the air temperature sensor at an appropriate time measured by the device, and calculate the time of the temperature difference at the corresponding time point stored in the storage device. An oil temperature monitoring device characterized in that it transmits an abnormal signal when the time change ΔL of the measured temperature difference is abnormally large compared to the change T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23361183A JPS60127944A (en) | 1983-12-13 | 1983-12-13 | Oil-temperature monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23361183A JPS60127944A (en) | 1983-12-13 | 1983-12-13 | Oil-temperature monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60127944A true JPS60127944A (en) | 1985-07-08 |
| JPH0435300B2 JPH0435300B2 (en) | 1992-06-10 |
Family
ID=16957756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23361183A Granted JPS60127944A (en) | 1983-12-13 | 1983-12-13 | Oil-temperature monitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60127944A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5904457A (en) * | 1996-06-26 | 1999-05-18 | The Gleason Works | Detecting tool wear by thermal monitoring of workpiece |
| CN109405890A (en) * | 2018-12-17 | 2019-03-01 | 成都泛茂科技发展有限公司 | A kind of diesel generating set automatic oiling monitoring method and the system for realizing this method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112747A (en) * | 1979-02-13 | 1980-08-30 | Toyoda Mach Works Ltd | Work device with temperature control function |
-
1983
- 1983-12-13 JP JP23361183A patent/JPS60127944A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112747A (en) * | 1979-02-13 | 1980-08-30 | Toyoda Mach Works Ltd | Work device with temperature control function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5904457A (en) * | 1996-06-26 | 1999-05-18 | The Gleason Works | Detecting tool wear by thermal monitoring of workpiece |
| CN109405890A (en) * | 2018-12-17 | 2019-03-01 | 成都泛茂科技发展有限公司 | A kind of diesel generating set automatic oiling monitoring method and the system for realizing this method |
| CN109405890B (en) * | 2018-12-17 | 2021-01-26 | 四川泛茂科技股份有限公司 | Automatic oiling monitoring method for diesel generating set and system for realizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0435300B2 (en) | 1992-06-10 |
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