JPH0452331A - Oil changing time indicator - Google Patents
Oil changing time indicatorInfo
- Publication number
- JPH0452331A JPH0452331A JP16055190A JP16055190A JPH0452331A JP H0452331 A JPH0452331 A JP H0452331A JP 16055190 A JP16055190 A JP 16055190A JP 16055190 A JP16055190 A JP 16055190A JP H0452331 A JPH0452331 A JP H0452331A
- Authority
- JP
- Japan
- Prior art keywords
- time
- hydraulic
- input
- breaker
- oil
- 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
- 230000006866 deterioration Effects 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 description 25
- 239000003921 oil Substances 0.000 description 7
- 239000010705 motor oil Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、油圧ショベルなど建設機械の作動油交換時期
表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hydraulic oil change time display device for construction machinery such as a hydraulic excavator.
（従来の技術）
第３図に示すように、建設機械の一種である油圧ショベ
ルＡは、走行体ａの上に上部旋回体すが旋回可能に装着
され、上部旋回体すには、ブームＣがブームシリンダ［
により上下に揺動可能に、またブームＣには、アームｄ
がアームシリンダｇにより前後に揺動可能に設けられて
いる。更にアームｄには、パケットの代わりに油圧ブレ
ーカ本体ｅが、パケットシリンダム１９２２機構ｉによ
り揺動可能に装着されている。(Prior Art) As shown in Fig. 3, a hydraulic excavator A, which is a type of construction machine, has an upper rotating body rotatably mounted on a traveling body a, and a boom C on the upper rotating body. is the boom cylinder [
The boom C is equipped with an arm d.
is provided so as to be swingable back and forth by an arm cylinder g. Furthermore, instead of the packet, a hydraulic breaker main body e is attached to the arm d so as to be swingable by a packet cylinder 1922 mechanism i.
上記のような各油圧アクチュエータには油圧ポンプ（図
示せず）により昇圧された作動油が使用されており、こ
の作動油は、稼働時間と共に汚染され、劣化するため所
定の稼働時間毎に交換されるべきものであり、従来は油
圧ショベルに設定された所定の時間が経過した作動油交
換時間などに基づき交換されていた。Each of the hydraulic actuators mentioned above uses hydraulic fluid that is pressurized by a hydraulic pump (not shown), and this hydraulic fluid becomes contaminated and deteriorates over time, so it must be replaced every predetermined operating time. Conventionally, the hydraulic oil was replaced based on a predetermined time period set in the hydraulic excavator, such as when the hydraulic oil was replaced.
父上記油圧ショベル等においては、油圧ブレーカが脱着
され、パケットと油圧ブレーカによる作業が交互に行わ
れることがあり、作業の種類により作動油の汚染度や、
劣化度が異なり、特に油圧ブレーカ作業はパケット作業
に比較し作動油の劣化が早いため取扱説明書では、第２
図に示したような油圧ブレーカの稼働率にもとずく作動
油の交換時間を設定表示していた。油圧ブレーカの稼働
率は次式で算出される。In the above-mentioned hydraulic excavators, etc., the hydraulic breaker may be attached and detached, and work using the packet and the hydraulic breaker may be performed alternately, and depending on the type of work, the degree of contamination of the hydraulic fluid,
The degree of deterioration is different, and in particular, hydraulic oil deteriorates faster in hydraulic breaker work than in packet work, so the instruction manual specifies that
As shown in the figure, the hydraulic oil replacement time was set and displayed based on the operating rate of the hydraulic breaker. The operating rate of the hydraulic breaker is calculated using the following formula.
ブレーカ稼働率＝〔（油圧ブレーカ稼働時間）÷（（油
圧ブレーカ稼働時間）＋（その他の稼働時間）））ｘｌ
ＯＯ（９６）
従って、運転者が油圧ショベルを充分整備された状態で
使用するには、逐次油圧ブレーカの稼働率を記録積算し
、稼働時間や前回の交換時期と対比し次回の作動油交換
時期をチエツクしなければならず、非常に煩雑であった
。Breaker operating rate = [(hydraulic breaker operating time) ÷ ((hydraulic breaker operating time) + (other operating hours))) xl
OO(96) Therefore, in order for the operator to use the hydraulic excavator in a well-maintained state, the operator must record and integrate the operation rate of the hydraulic breakers sequentially, compare the operating hours and the previous oil replacement time, and determine the next hydraulic oil replacement time. had to be checked, which was extremely troublesome.
（発明が解決しようとする課題）
しかしながら、油圧ショベルの稼働現場では、パケット
と油圧ブレーカを頻繁に交換し使用することが多く、油
圧ブレーカの正確な稼働時間を把握することが不可能に
近く、実際に使われる油圧ブレーカの稼働率は運転者の
感覚による推定値によることが殆どで、適正な作動油交
換時間が守られることが少なかった。即ち、作動油交換
間隔が早過ぎる場合は資源の無駄使いとなり、遅過ぎる
と機械の故障を招く等の不具合を生じるもので、機械管
理者や、運転者からも油圧ブレーカ稼働率計装値の要求
が強い。(Problems to be Solved by the Invention) However, in the field where hydraulic excavators are operated, packets and hydraulic breakers are often replaced and used, and it is nearly impossible to grasp the exact operating time of the hydraulic breakers. The operating rate of hydraulic breakers actually used is mostly based on estimates based on the driver's intuition, and the appropriate hydraulic oil change time is rarely observed. In other words, if the hydraulic oil change interval is too early, it will be a waste of resources, and if it is too late, problems such as machine failure will occur. Strong demands.
本発明は上記問題に着目し、建設機械の作動油交換時間
に係わり、特には、建設機械の作動油の次回交換までの
残存稼働時間を算出表示を技術に関する。The present invention focuses on the above-mentioned problem, and relates to the time required to change the hydraulic oil of a construction machine, and particularly relates to a technique for calculating and displaying the remaining operating time until the next change of the hydraulic oil of a construction machine.
（課題を解決するだめの手段）
上記目的を達成するため、本発明では、油圧ブレーカを
装着した建設機械において、エンジン稼働時間とブレー
カ稼働時間をそれぞれ計測し、その比率を演算する演算
手段と、前記比率とオイルの劣化係数から油圧アクチュ
エータ用作動油交換時間間隔を算出し、次回の作動油交
換時期までの残存稼働時間を表示する表示手段を備える
ものである。(Means for Solving the Problem) In order to achieve the above object, the present invention provides a construction machine equipped with a hydraulic breaker, which includes a calculation means for measuring the engine operating time and the breaker operating time, and calculating the ratio thereof; The apparatus is provided with a display means that calculates a hydraulic oil replacement time interval for the hydraulic actuator from the ratio and the oil deterioration coefficient, and displays the remaining operating time until the next hydraulic oil replacement time.
（作用）
上記構成によれば、エンジンが稼働した実稼働時間（１
）と油圧ブレーカが稼働した実稼働時間（Δｔ）を計測
することにより、次式で油圧プレ力の稼働率（Ｒ）を計
算し表示器に表示できる。(Operation) According to the above configuration, the actual operating time (1
) and the actual operating time (Δt) in which the hydraulic breaker operated, the operating rate (R) of the hydraulic pressure pre-force can be calculated using the following formula and displayed on the display.
Ｒ＝（Δｔ／１）ｘｌｏｏ （９６） ・・・ （イ
）次に上記油圧ブレーカ稼働率（Ｒ）に対応する作動油
使用可能時間（Ｔ、）を次式により算出する。R=(Δt/1)xlooo (96) (a) Next, the hydraulic oil usable time (T, ) corresponding to the hydraulic breaker operating rate (R) is calculated using the following formula.
Ｔ、：ａ４Ｒ’ ＋ａｓ Ｒ３＋ａ、Ｒ’ ＋ａ、Ｒ＋
ａｏ ・・・ （ロ）
ａｓ ａｔ ａｌ ａｓ ａｎは定数である。T, :a4R' +as R3+a, R' +a, R+
ao ... (b) as at al as an is a constant.
前回の作動油交換時までの累積稼働時間を（Ｔ２）、現
在の累積稼働時間を（Ｔ、）として９次回の作動油交換
時期までの残存稼働時間（Ｔ）を次式により算出する。The remaining operating time (T) until the ninth hydraulic oil replacement time is calculated using the following formula, assuming that the cumulative operating time until the previous hydraulic oil change is (T2) and the current cumulative operating time (T,).
Ｔ＝Ｔ、−（Ｔ、−Ｔ、”） ・・・ （ハ）上記（
Ｔ）を表示器に表示することにより、運転者に、次回の
作動油交換時期までの残存稼働時間を知らせるものであ
る。T=T, -(T, -T,") ... (c) Above (
By displaying T) on the display, the driver is informed of the remaining operating time until the next hydraulic oil change time.
（実施例）
以下、本発明の一実施例を図面に基すいて説明する。第
１図においてｌはエンジン油圧検出器、２はブレーカ油
圧検出器、３．４は時間カウント回路、５は油圧ブレー
カ稼働率演算回路、６は次回の作動油交換時期までの残
存稼働時間を算出する残存稼働時間演算回路、７は表示
器、８はクロックパルス発生器である。エンジン油圧検
出器Ｉはエンジン油圧が昇圧している間、所定の電流を
時間カウント回路３に入力し、時間カウント回路３では
、前記電流の入力している時間を積算、記憶しその積算
値は常に油圧ブレーカ稼働率演算回路５に入力されてい
る。ブレーカ油圧検出器３は油圧ブレーカｅの作動油圧
回路に装着され、ブレーカ油圧が昇圧すると、所定の電
流を時間カウント回路４に入力し、時間カウント回路４
ではエンジン油圧の場合と同様に、前記電流が入力され
ている時間を積算、記憶し、その積算値を常に油圧ブレ
ーカ稼働率演算回路５に入力される。油圧ブレーカ稼働
率演算回路５では演算式（イ）により油圧ブレーカ稼働
率（Ｒ）を算出し、算出結果は残存稼働時間演算回路６
に入力される。残存稼働時間演算回路６では入力された
油圧ブレーカ稼働率（Ｒ）を基に演算式（ロ）により作
動油使用可能時間（Ｔ１）を算出し、既に残存稼働時間
演算回路６に記憶されている前回の作動油交換時間（Ｔ
、）と、累積稼働時間（Ｔ、）を基に演算式（ハ）によ
り、次回の作動油交換までの残存稼働時間（Ｔ）を算出
し、算出結果を、表示器７に入力する。また、油圧ブレ
ーカ稼働率演算回路５で算出された油圧ブレーカ稼働率
（Ｒ）も表示器７に入力される。かくして、表示器７に
は最新の油圧ブレーカ稼働率（Ｒ）と、次回の作動油交
換までの残存稼働時間（Ｔ）が表示されるものである。(Example) Hereinafter, an example of the present invention will be described based on the drawings. In Figure 1, l is the engine oil pressure detector, 2 is the breaker oil pressure detector, 3.4 is the time count circuit, 5 is the hydraulic breaker operating rate calculation circuit, and 6 is the remaining operating time until the next hydraulic oil change time. 7 is a display, and 8 is a clock pulse generator. The engine oil pressure detector I inputs a predetermined current to the time count circuit 3 while the engine oil pressure is increasing, and the time count circuit 3 integrates and stores the time during which the current is input, and the integrated value is It is always input to the hydraulic breaker operating rate calculation circuit 5. The breaker oil pressure detector 3 is attached to the working oil pressure circuit of the hydraulic breaker e, and when the breaker oil pressure increases, it inputs a predetermined current to the time count circuit 4, and
Then, as in the case of engine oil pressure, the time during which the current is input is integrated and stored, and the integrated value is always input to the hydraulic breaker operating rate calculation circuit 5. The hydraulic breaker operation rate calculation circuit 5 calculates the hydraulic breaker operation rate (R) using the calculation formula (a), and the calculation result is sent to the remaining operation time calculation circuit 6.
is input. The remaining operating time calculation circuit 6 calculates the usable hydraulic oil time (T1) based on the input hydraulic breaker operating rate (R) using the calculation formula (b), which is already stored in the remaining operating time calculation circuit 6. Last hydraulic oil change time (T
, ) and the cumulative operating time (T, ), the remaining operating time (T) until the next hydraulic oil change is calculated using the calculation formula (c), and the calculation result is input into the display 7. Further, the hydraulic breaker operating rate (R) calculated by the hydraulic breaker operating rate calculation circuit 5 is also input to the display 7. Thus, the display 7 displays the latest hydraulic breaker operating rate (R) and the remaining operating time (T) until the next hydraulic oil change.
（発明の効果）
以上説明したように、本発明によれば、油圧ブレーカの
稼働率を運転者の勘や記憶にたよることなく正確に算出
され、次回の作動油交換までの残存稼働時間と共に表示
器に、常に表示されるので、適切な時期に作動油を、交
換することができる。(Effects of the Invention) As explained above, according to the present invention, the operating rate of a hydraulic breaker can be accurately calculated without relying on the operator's intuition or memory, and the operating rate can be calculated accurately along with the remaining operating time until the next hydraulic oil change. Since it is always displayed on the display, the hydraulic oil can be replaced at an appropriate time.
従って、交換時期が早過ぎたための、作動油の無駄な消
費も無く、交換時期が遅すぎたための、油圧機器の損傷
も防止出来るものである。Therefore, there is no wasteful consumption of hydraulic fluid due to premature replacement, and damage to hydraulic equipment due to late replacement can also be prevented.
第１図は本発明の作動油交換時期を算出表示するブロッ
ク図、
第２図は作動油交換時間と油圧ブレーカ稼働率の関係を
示す図、
第３図は油圧ショベルの概略図。
エンジン油圧検出器
油圧ブレーカ油圧検出器
・・時間カウント回路
油圧ブレーカ稼働率演算回路
残存稼働時間演算回路
表示器FIG. 1 is a block diagram for calculating and displaying the hydraulic oil change time of the present invention, FIG. 2 is a diagram showing the relationship between the hydraulic oil change time and hydraulic breaker operating rate, and FIG. 3 is a schematic diagram of a hydraulic excavator. Engine oil pressure detector Hydraulic breaker Oil pressure detector...Time count circuit Hydraulic breaker operating rate calculation circuit Remaining operating time calculation circuit indicator
Claims (1)
稼働時間とブレーカ稼働時間をそれぞれ計測し、その比
率を演算する演算手段と、前記比率とオイルの劣化係数
から油圧アクチュエータ用オイル交換間隔を算出し、次
回のオイル交換時期までの時間を表示する表示手段とを
備えたことを特徴とするオイル交換時期表示装置In construction machinery equipped with a hydraulic breaker, there is a calculation means that measures the engine operating time and breaker operating time and calculates the ratio, and calculates the oil change interval for the hydraulic actuator from the ratio and the oil deterioration coefficient, and calculates the next time. An oil change time display device comprising a display means for displaying the time until oil change time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16055190A JPH0452331A (en) | 1990-06-19 | 1990-06-19 | Oil changing time indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16055190A JPH0452331A (en) | 1990-06-19 | 1990-06-19 | Oil changing time indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0452331A true JPH0452331A (en) | 1992-02-20 |
Family
ID=15717438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16055190A Pending JPH0452331A (en) | 1990-06-19 | 1990-06-19 | Oil changing time indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5696331A (en) * | 1992-06-26 | 1997-12-09 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for detecting metal powder amount in hydraulic circuit |
| US6484127B1 (en) | 2000-11-27 | 2002-11-19 | Volvo Trucks North America, Inc. | Oil maintenance indicator |
-
1990
- 1990-06-19 JP JP16055190A patent/JPH0452331A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5696331A (en) * | 1992-06-26 | 1997-12-09 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for detecting metal powder amount in hydraulic circuit |
| US6484127B1 (en) | 2000-11-27 | 2002-11-19 | Volvo Trucks North America, Inc. | Oil maintenance indicator |
| WO2002042118A3 (en) * | 2000-11-27 | 2003-02-13 | Volvo Trucks North America Inc | Oil maintenance indicator |
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