JPH06201092A - Lubricating oil feeder - Google Patents

Lubricating oil feeder

Info

Publication number
JPH06201092A
JPH06201092A JP4349318A JP34931892A JPH06201092A JP H06201092 A JPH06201092 A JP H06201092A JP 4349318 A JP4349318 A JP 4349318A JP 34931892 A JP34931892 A JP 34931892A JP H06201092 A JPH06201092 A JP H06201092A
Authority
JP
Japan
Prior art keywords
oil
lubricating oil
pressure
air
lubricated
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
Application number
JP4349318A
Other languages
Japanese (ja)
Other versions
JP3616113B2 (en
Inventor
Shuji Mitsuma
修司 三間
Yasushi Amano
靖 天野
Yukio Sato
幸夫 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP34931892A priority Critical patent/JP3616113B2/en
Priority to CA002112181A priority patent/CA2112181C/en
Priority to DE4344788A priority patent/DE4344788C2/en
Publication of JPH06201092A publication Critical patent/JPH06201092A/en
Application granted granted Critical
Publication of JP3616113B2 publication Critical patent/JP3616113B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
    • F16N7/32—Mist lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2250/00—Measuring
    • F16N2250/04—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N27/00—Proportioning devices
    • F16N27/005—Proportioning devices using restrictions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Rolling Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PURPOSE:To enable the detection of the abnormal supply state of oil air to a lubricated object with low-priced constitution in an oil air lubricating system. CONSTITUTION:An orifice 10 is formed at the intermediate part of a drain pipeline 8 for discharging lubricating oil from a bearing 7 lubricated by oil air, and a pressure sensor 11 is provided at the drain pipeline 8 upstream of the orifice 10. In the case of the detection value of the pressure sensor 11 being lower than the value in the normal state, the supply state of oil air to the bearing 7 is judged to be abnormal.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、圧延機や工作機械等の
回転軸を支持する軸受等の潤滑対象物に、潤滑油を、圧
縮空気を利用して管路の内壁面に沿って移動する状態
（オイルエア）として供給する潤滑油供給装置（オイル
エア潤滑システム）に関し、特に、安価な構成で、潤滑
対象物にオイルエアが供給されていない異常状態を検出
できるようにしたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a compressed air to move lubricating oil to an object to be lubricated, such as a bearing that supports a rotating shaft of a rolling mill or machine tool, along the inner wall surface of a pipeline. The present invention relates to a lubricating oil supply device (oil-air lubrication system) that supplies a lubricating oil (oil-air) in a state in which the oil-air is supplied to an object to be lubricated.

【０００２】[0002]

【従来の技術】潤滑油と圧縮空気とを適宜混合してなる
オイルエアを軸受等の潤滑対象物に供給する潤滑油供給
装置としては、例えば、本出願人が先に提案した特開平
２−２７１１９７号公報に開示されたものがある。かか
る従来の技術は、潤滑油と圧縮空気とを供給するメイン
ユニットと、それら潤滑油及び圧縮空気を混合してオイ
ルエア状態とする混合器と、オイルエアを多岐分配する
ための分配器とを基本構成としている。そして、特に上
記従来の技術にあっては、混合器の下流側に例えば光学
的に潤滑油の流れを検出する手段を設けることにより、
適量のオイルエアを供給しているか否かを監視できるよ
うにしていた。2. Description of the Related Art As a lubricating oil supply device for supplying an oil air, which is a mixture of lubricating oil and compressed air, to a lubrication object such as a bearing, for example, Japanese Patent Application Laid-Open No. 2-271197 previously proposed by the present applicant. There is one disclosed in the publication. Such a conventional technique has a basic configuration including a main unit that supplies lubricating oil and compressed air, a mixer that mixes the lubricating oil and compressed air into an oil-air state, and a distributor that distributes the oil-air in various ways. I am trying. And, in particular, in the above-mentioned conventional technique, by providing a means for optically detecting the flow of the lubricating oil, for example, on the downstream side of the mixer,
It was possible to monitor whether or not an appropriate amount of oil / air was being supplied.

【０００３】[0003]

【発明が解決しようとする課題】確かに、上記従来の技
術によれば、混合器から適量のオイルエアが送りだされ
ているか否かを監視することは可能であるが、そのオイ
ルエアが各軸受等に確実に到達しているか否かを判断す
ることはできない。即ち、例えば軸受に至る直前の管路
等に破断等の異常が生じていても、圧縮空気が正常に供
給されている限りその混合器の下流側の潤滑油流量及び
空気流量に変化は生じないからである。Certainly, according to the above-mentioned conventional technique, it is possible to monitor whether or not an appropriate amount of oil / air is being sent out from the mixer, but the oil / air is used for each bearing or the like. It is not possible to determine whether or not That is, for example, even if an abnormality such as a break occurs in the pipe line immediately before reaching the bearing, the lubricating oil flow rate and the air flow rate on the downstream side of the mixer do not change as long as the compressed air is normally supplied. Because.

【０００４】従って、全ての潤滑対象物の直前に潤滑油
が確実に供給されているか否かを検出するセンサを設け
ることが望ましいのであるが、上記従来の技術に開示さ
れるような光学的センサは比較的高価であるため、例え
ば多数のガイドロール，ピンチロール等を有し潤滑箇所
が数百箇所に達する場合もある連続鋳造機のようなもの
に適用すると、費用が膨大になってしまうという問題点
がある。Therefore, it is desirable to provide a sensor for detecting whether or not the lubricating oil is surely supplied immediately before all the objects to be lubricated, but the optical sensor as disclosed in the above-mentioned prior art is provided. Is relatively expensive, so if it is applied to a continuous casting machine that has many guide rolls, pinch rolls, etc. and may reach several hundred lubrication points, the cost will be enormous. There is a problem.

【０００５】特に、オイルエア潤滑システムの一つの特
徴が微量の潤滑油を連続して確実に供給することにある
ため、そもそも流れている潤滑油は微量である場合が多
く、従って光学的センサ等であっても油の流動を正確に
検出することは困難な場合があった。そして、より正確
に検出するためには、それだけ高精度の高価なセンサが
必要となるから、上述のように配設位置が数百箇所にも
達すると、費用の大幅な増大を招いてしまうことにな
る。In particular, since one feature of the oil-air lubrication system is that a small amount of lubricating oil is continuously and reliably supplied, the lubricating oil that is flowing is often a small amount in the first place. Even then, it was sometimes difficult to accurately detect the oil flow. And in order to detect it more accurately, a highly accurate and expensive sensor is required, so if the number of installation positions reaches several hundreds as described above, it will cause a significant increase in cost. become.

【０００６】本発明は、このような従来の技術が有する
未解決の課題に着目してなされたものであって、潤滑対
象物にオイルエアが確実に供給されていない異常状態
を、安価な構成で、しかも下流側の配管の破断等による
異常であっても容易に検出することが可能な潤滑油供給
装置を提供することを目的としている。The present invention has been made by paying attention to the unsolved problems of the prior art as described above, and has an inexpensive structure for an abnormal state in which oil air is not reliably supplied to an object to be lubricated. Moreover, it is an object of the present invention to provide a lubricating oil supply device capable of easily detecting an abnormality such as a breakage of a downstream pipe.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、潤滑油を、圧縮空気を利用して管路の内
壁面に沿って移動させて潤滑対象物に供給する潤滑油供
給装置において、前記潤滑対象物から潤滑油を排出する
排油ラインにオリフィスを形成するとともに、前記潤滑
対象物に潤滑油を供給する給油ライン及び前記オリフィ
スよりも上流側の前記排油ラインの内の少なくとも一方
の圧力変化を検出する圧力変化検出手段を設けた。In order to achieve the above object, the present invention provides a lubricating oil which is supplied to an object to be lubricated by moving the lubricating oil along the inner wall surface of a pipe using compressed air. In the supply device, an orifice is formed in an oil discharge line for discharging lubricating oil from the object to be lubricated, and an oil supply line for supplying lubricating oil to the object to be lubricated and the oil discharge line upstream of the orifice are provided. A pressure change detecting means for detecting a pressure change of at least one of the above is provided.

【０００８】[0008]

【作用】潤滑対象物から潤滑油を排出する排油ラインに
オリフィスが形成されているため、かかるオリフィスよ
りも上流側の排油ライン及び給油ラインは、潤滑対象物
に潤滑油が適宜供給されている限り、所定圧力に保たれ
る。なぜならば、潤滑油は、圧縮空気によって給油ライ
ンを構成する管路の内壁面に沿って移動して潤滑対象物
に到達するのであり、圧縮空気が供給されていない状況
であれば、潤滑油は当然に供給されないから、給油ライ
ン又は排油ラインに潤滑油が供給されている状況であれ
ば、オリフィスよりも上流側は所定圧力を維持するから
である。そして、給油ライン又はその上流側に配設され
る分配器等において流路が閉塞し、オイルエアの移動が
妨げられると、その閉塞位置において圧力降下が生じる
ため、オリフィスよりも上流側の圧力は低下するから、
逆に、オリフィスよりも上流側が所定圧力に保たれてい
れば、潤滑対象物にオイルエアが適宜供給されていると
判断できるのである。Since the orifice is formed in the drain line for discharging the lubricating oil from the object to be lubricated, the lubricating oil is appropriately supplied to the object to be lubricated in the drain line and the oil supply line upstream of the orifice. The pressure is maintained as long as the This is because the lubricating oil moves along the inner wall surface of the pipeline that constitutes the oil supply line by compressed air to reach the object to be lubricated, and in the situation where compressed air is not supplied, the lubricating oil is This is because, of course, since the oil is not supplied, if the lubricating oil is being supplied to the oil supply line or the oil discharge line, the predetermined pressure is maintained on the upstream side of the orifice. Then, if the flow path is blocked in the oil supply line or a distributor or the like arranged upstream of the oil supply line and the movement of oil air is blocked, a pressure drop occurs at the closed position, so the pressure on the upstream side of the orifice decreases. Because
On the contrary, if the upstream side of the orifice is kept at a predetermined pressure, it can be determined that oil air is appropriately supplied to the object to be lubricated.

【０００９】具体的に説明すると、先ず、圧力変化検出
手段が給油ラインの圧力変化を検出可能の場合には、そ
の圧力変化検出位置よりも上流側で配管の破断や閉塞等
が生じれば、その異常は圧力の低下として検出され、そ
の圧力変化検出位置よりも下流側で配管の破断や閉塞が
生じると、破断は圧力の低下として検出され、閉塞は圧
力の上昇として検出される。More specifically, first, in the case where the pressure change detecting means can detect the pressure change of the oil supply line, if a break or blockage of the pipe occurs upstream of the pressure change detection position, The abnormality is detected as a decrease in pressure, and if the pipe is broken or blocked downstream of the pressure change detection position, the break is detected as a decrease in pressure and the block is detected as an increase in pressure.

【００１０】また、圧力変化検出手段がオリフィスより
も上流側の排油ラインの圧力変化を検出可能の場合に
は、例えば潤滑対象物のシール破断や給油ラインの破
断，閉塞等が生じれば、その異常は圧力の低下として検
出される。Further, when the pressure change detecting means can detect the pressure change in the oil drain line upstream of the orifice, for example, if the seal of the object to be lubricated is broken or the oil supply line is broken or blocked, The abnormality is detected as a decrease in pressure.

【００１１】[0011]

【実施例】以下、この発明の実施例を図面に基づいて説
明する。図１は、本発明の第１実施例を示す図である。
先ず、構成を説明すると、混合器１は、メインユニット
（図示せず）から供給される圧縮空気と潤滑油とを混合
してオイルエアを生成し、そのオイルエアを均等に分配
して各分配ポート１ａ〜１ｆから送り出す装置である。
なお、混合器１及びメインユニットの具体的な構造は公
知である（上記公開公報等参照）ため、ここでの説明は
省略する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of the present invention.
First, the configuration will be described. The mixer 1 mixes compressed air supplied from a main unit (not shown) with lubricating oil to generate oil air, and distributes the oil air evenly to distribute each distribution port 1a. It is a device for sending out from 1f.
Since the specific structures of the mixer 1 and the main unit are known (see the above-mentioned publication), the description thereof is omitted here.

【００１２】そして、この実施例では、混合器１に対し
て六つの分配器２Ａ〜２Ｆが設けられていて、混合器１
の各分配ポート１ａ〜１ｆと各分配器２Ａ〜２Ｆの給油
ポート２ａとが、配管３ａ〜３ｆを介して接続されてい
る。各分配器２Ａ〜２Ｆは、オイルエアを供給する潤滑
対象物の数に応じた分配ポート４を有している。この実
施例では、各分配器２Ａ〜２Ｆ毎に四つの分配ポート４
が設けられている。In this embodiment, six distributors 2A to 2F are provided for the mixer 1, and the mixer 1
The respective distribution ports 1a to 1f and the oil supply ports 2a of the respective distributors 2A to 2F are connected to each other via pipes 3a to 3f. Each of the distributors 2A to 2F has a distribution port 4 according to the number of lubrication targets that supply oil air. In this embodiment, four distributor ports 4 are provided for each distributor 2A-2F.
Is provided.

【００１３】なお、各分配ポート４よりも先の構成は、
いずれの分配ポート４に関しても同様であるため、以下
の説明は、分配器２Ａに設けられた一の分配ポート４に
ついてのみ行うこととし、それ以外の図示及び説明は省
略する。即ち、分配ポート４には給油ラインとしての給
油配管５が接続され、この給油配管５の他端側が潤滑対
象物としての軸受７の潤滑油供給口７ａに接続されてい
る。一方、軸受７の潤滑油排出口７ｂとオイルタンク９
との間が、排油ラインとしてのドレン配管８を介して接
続されている。The configuration prior to each distribution port 4 is as follows.
Since the same applies to any of the distribution ports 4, the following description will be made only for one distribution port 4 provided in the distributor 2A, and the other figures and description will be omitted. That is, the distribution port 4 is connected to an oil supply pipe 5 as an oil supply line, and the other end of the oil supply pipe 5 is connected to a lubricating oil supply port 7a of a bearing 7 as an object to be lubricated. On the other hand, the lubricating oil discharge port 7b of the bearing 7 and the oil tank 9
Is connected via a drain pipe 8 as an oil drain line.

【００１４】そして、ドレン配管８の中途部にはオリフ
ィス１０が形成されるとともに、ドレン配管８のオリフ
ィス１０よりも上流側の位置の圧力を測定する圧力変化
検出手段としての圧力センサ１１が配設されている。次
に、本実施例の作用を説明する。即ち、ドレン配管８に
形成されたオイルエア１０の絞り効果によって、そのオ
リフィス１０よりも上流側のドレン配管８，軸受７内及
び給油配管５の圧力は、異常が発生していなければ、0.
２〜0.４kg/cm2に保たれている。An orifice 10 is formed in the middle of the drain pipe 8, and a pressure sensor 11 as a pressure change detecting means for measuring the pressure at a position upstream of the orifice 10 in the drain pipe 8 is provided. Has been done. Next, the operation of this embodiment will be described. That is, due to the throttling effect of the oil air 10 formed in the drain pipe 8, the pressures of the drain pipe 8, the bearing 7 and the oil supply pipe 5 upstream of the orifice 10 are 0 if there is no abnormality.
It is kept at 2 to 0.4 kg / cm 2 .

【００１５】そして、圧力センサ１１がそのような正常
時の圧力を示していれば、軸受７には適量の潤滑油が供
給されていると判断できる。なぜならば、オイルエア潤
滑システムにあっては、圧縮空気の流れによって潤滑油
が管路の内壁面に沿って移動するのであるから、圧縮空
気が供給されない状態で潤滑油のみが供給されるという
ことはあり得ないからである。なお、圧縮空気のみが供
給されているという状況は、混合器１における潤滑油の
供給が正常に行われていない場合であり、これは上記公
開公報に開示される技術によって容易に検出される。If the pressure sensor 11 indicates such a normal pressure, it can be determined that the bearing 7 is supplied with an appropriate amount of lubricating oil. This is because in the oil-air lubrication system, the lubricating oil moves along the inner wall surface of the pipeline due to the flow of compressed air, so it is not possible to supply only the lubricating oil without supplying compressed air. Because it is impossible. The situation where only compressed air is supplied is a case where the lubricating oil is not normally supplied in the mixer 1, and this is easily detected by the technique disclosed in the above-mentioned publication.

【００１６】具体的に説明すると、例えば配管３ａ，分
配器２Ａ及び給油配管５の何れかにおいて詰まりや配管
つぶれ等が生じて、軸受７にオイルエアが正常に搬送さ
れない状態となると、その詰まりやつぶれ等が生じた部
位で圧力降下が生じるため、ドレン配管８内の圧力は正
常状態よりも低下することになる。また、例えば配管３
ａや給油配管５で破断が生じたり、或いは、分配ポート
１ａと配管３ａとの接続部分のシール劣化による漏れ、
その他各接続部分の異常によって、オリフィス１０より
も上流側の配管等が開放されて軸受７にオイルエアが搬
送されない状態となると、やはりドレン配管８内の圧力
は正常状態よりも低下することになる。More specifically, for example, if any of the pipe 3a, the distributor 2A, and the oil supply pipe 5 is clogged or crushed, and the oil / air is not normally conveyed to the bearing 7, the clogging or crushing will occur. Since a pressure drop occurs at the portion where the above occurs, the pressure in the drain pipe 8 becomes lower than the normal state. Also, for example, the pipe 3
a or the oil supply pipe 5 may be broken, or leakage due to deterioration of the seal at the connecting portion between the distribution port 1a and the pipe 3a,
When the pipes and the like on the upstream side of the orifice 10 are opened and oil air is not conveyed to the bearing 7 due to the abnormality of the other connecting portions, the pressure in the drain pipe 8 also falls below the normal state.

【００１７】さらに、軸受７内のシールが破損する等し
たため、軸受７にオイルエアが到達しているにも関わら
ず、正常な潤滑が行われていない状況でも、やはりドレ
ン配管８内の圧力は正常状態よりも低下することにな
る。つまり、本実施例の構成であれば、軸受７にオイル
エアが正常に搬送されていない異常状態となると、ドレ
ン配管８の圧力が低下し、その圧力低下が圧力センサ１
１の測定値に現れるから、そのような異常は容易に検出
される。Further, since the seal inside the bearing 7 is damaged, the pressure inside the drain pipe 8 is still normal even when the oil is reaching the bearing 7 but the normal lubrication is not performed. It will be lower than the state. That is, according to the configuration of the present embodiment, when the bearing 7 is in an abnormal state where the oil air is not normally conveyed, the pressure in the drain pipe 8 is reduced, and the pressure drop is caused by the pressure sensor 1.
Such anomalies are easily detected as they appear in the measured value of 1.

【００１８】そして、このような作用を得るために必要
な構成は、オリフィス１０と圧力センサ１１のみである
から、安価で済む。よって、多数のガイドロール，ピン
チロール等を有し潤滑箇所が数百箇所に達する場合もあ
る連続鋳造機のようなものに適用しても、膨大な費用を
要することにならない。また、本実施例であれば、オイ
ルエア搬送の異常を配管内の圧力の変化によって検出す
る構成であるため、オイルエアとして搬送される潤滑油
の流量が微量の場合であっても、容易に異常を検出でき
るという利点がある。Since only the orifice 10 and the pressure sensor 11 are necessary for obtaining such an action, the cost is low. Therefore, even if it is applied to a continuous casting machine having a large number of guide rolls, pinch rolls, etc., and there may be several hundred lubrication points, enormous cost is not required. Further, according to the present embodiment, since the abnormality of the oil / air conveyance is detected by the change in the pressure in the pipe, the abnormality can be easily detected even when the flow rate of the lubricating oil conveyed as the oil air is very small. It has the advantage of being detectable.

【００１９】なお、本実施例の場合には、異常の場合に
圧力が低下することから、圧力センサ１１に代えて、所
定圧力以下になったことを検知する圧力スイッチを適用
してもよく、そうすれば、一般に圧力スイッチの方が安
価であるから、さらなる費用の低減が図られる。図２は
本発明の第２実施例を示す図である。図示しないその他
の構成は上記第１実施例と同様であるため、その重複す
る説明は省略する。In the case of this embodiment, since the pressure drops in the case of an abnormality, a pressure switch for detecting that the pressure has dropped below a predetermined pressure may be used instead of the pressure sensor 11. Then, since the pressure switch is generally cheaper, the cost can be further reduced. FIG. 2 is a diagram showing a second embodiment of the present invention. Other configurations not shown are the same as those of the above-described first embodiment, and thus their duplicated description will be omitted.

【００２０】即ち、本実施例では、圧力センサ１１を、
ドレン配管８ではなく、給油配管５に設けたものであ
る。このような構成であると、圧力センサ１１よりも上
流側で詰まりや破断が生じると、その詰まりや破断部位
よりも下流側の圧力が低下するから、圧力センサ１１の
測定値低下によって異常が検出される。That is, in this embodiment, the pressure sensor 11 is
The oil supply pipe 5 is provided instead of the drain pipe 8. With such a configuration, when clogging or breakage occurs on the upstream side of the pressure sensor 11, the pressure on the downstream side of the clogging or breakage site decreases, so an abnormality is detected by a decrease in the measured value of the pressure sensor 11. To be done.

【００２１】また、圧力センサ１１よりも下流側で詰ま
り等による閉塞が生じると、その詰まった位置よりも上
流側の圧力が上昇するから、圧力センサ１１の測定値上
昇によって異常が検出される。さらに、圧力センサ１１
よりも下流側で破断等による開放が生じると、給油配管
５の圧力が低下するから、圧力センサ１１の測定値低下
によって異常が検出される。Further, if blockage occurs due to clogging or the like on the downstream side of the pressure sensor 11, the pressure on the upstream side of the clogged position rises, so an abnormality is detected by an increase in the measured value of the pressure sensor 11. Furthermore, the pressure sensor 11
When the opening occurs due to breakage or the like on the downstream side, the pressure in the oil supply pipe 5 decreases, so that the abnormality is detected by the decrease in the measured value of the pressure sensor 11.

【００２２】このように、本実施例の構成であっても、
上記第１実施例と同様に圧力センサ１１の測定値の変化
によって、軸受７にオイルエアが正常に供給されていな
い状態を検出することができる。しかも、本実施例の場
合には、異常の種類によって圧力センサ１１の圧力が上
昇する場合と低下する場合とがあるため、圧力センサ１
１の測定値の変化状況から、ある程度の異常の種類を判
別することも可能である。Thus, even with the configuration of this embodiment,
Similar to the first embodiment, the change in the measured value of the pressure sensor 11 can detect the state in which the oil is not normally supplied to the bearing 7. Moreover, in the case of the present embodiment, the pressure of the pressure sensor 11 may increase or decrease depending on the type of abnormality.
It is also possible to determine the type of abnormality to some extent from the change state of the measured value of 1.

【００２３】なお、本実施例の場合にも、圧力センサ１
１に代えて圧力スイッチを適用してもよい。ただし、本
実施例の場合には、異常の種類によっては圧力が上昇す
る場合と低下する場合とがあるため、正常状態に比べて
圧力が上昇したことを検知する圧力スイッチと正常状態
に比べて圧力が低下したことを検知する圧力スイッチと
の二種類の圧力スイッチ、または、二つの接点を有する
圧力スイッチが必要となる。In the case of this embodiment as well, the pressure sensor 1
Instead of 1, a pressure switch may be applied. However, in the case of the present embodiment, the pressure may increase or decrease depending on the type of abnormality, so the pressure switch that detects that the pressure has increased compared to the normal state and the pressure switch compared to the normal state Two types of pressure switches, one with a pressure switch that detects when the pressure has dropped, or a pressure switch with two contacts are required.

【００２４】また、上記各実施例では、給油配管５又は
ドレン配管８の何れか一方に圧力センサ１１を設けた場
合について説明したが、検出精度を向上させるために、
それら両方に圧力センサ１１又は圧力スイッチを設けて
もよい。さらに、上記各実施例では、潤滑対象物として
軸受７を示しているが、これに限定されるものではな
い。In each of the above embodiments, the case where the pressure sensor 11 is provided on either one of the oil supply pipe 5 and the drain pipe 8 has been described, but in order to improve the detection accuracy,
A pressure sensor 11 or a pressure switch may be provided on both of them. Further, although the bearing 7 is shown as the object to be lubricated in each of the above-mentioned embodiments, it is not limited to this.

【００２５】[0025]

【発明の効果】以上説明したように、本発明によれば、
排油ラインにオリフィスを形成し、そのオリフィスより
も上流側の圧力変動を検出可能な構成としたため、安価
な構成で、潤滑対象物にオイルエアが正常に供給されて
いない状態を検出することができ、しかも、オイルエア
として搬送される潤滑油の流量が微量の場合であっても
容易に異常を検出できるという効果がある。As described above, according to the present invention,
Since an orifice is formed in the oil drain line and pressure fluctuations on the upstream side of the orifice can be detected, it is possible to detect the state where oil air is not normally supplied to the lubrication target with an inexpensive configuration. Moreover, there is an effect that an abnormality can be easily detected even when the flow rate of the lubricating oil conveyed as oil air is very small.

【図面の簡単な説明】[Brief description of drawings]

【図１】第１実施例の構成を示す図である。FIG. 1 is a diagram showing a configuration of a first embodiment.

【図２】第２実施例の構成を示す図である。FIG. 2 is a diagram showing a configuration of a second exemplary embodiment.

【符号の説明】[Explanation of symbols]

１ 混合器 ２Ａ〜２Ｆ 分配器 ５ 給油配管（給油ライン） ７ 軸受（潤滑対象物） ８ ドレン配管（排油ライン） １０ オリフィス １１ 圧力センサ（圧力変化検出手段） 1 Mixer 2A to 2F Distributor 5 Oil supply pipe (oil supply line) 7 Bearing (object to be lubricated) 8 Drain pipe (oil discharge line) 10 Orifice 11 Pressure sensor (pressure change detection means)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 潤滑油を、圧縮空気を利用して管路の内
壁面に沿って移動させて潤滑対象物に供給する潤滑油供
給装置において、前記潤滑対象物から潤滑油を排出する
排油ラインにオリフィスを形成するとともに、前記潤滑
対象物に潤滑油を供給する給油ライン及び前記オリフィ
スよりも上流側の前記排油ラインの内の少なくとも一方
の圧力変化を検出する圧力変化検出手段を設けたことを
特徴とする潤滑油供給装置。1. A lubricating oil supply device for supplying lubricating oil to an object to be lubricated by moving the lubricating oil along an inner wall surface of a pipe using compressed air, and exhausting the lubricating oil from the object to be lubricated. An orifice is formed in the line, and a pressure change detection means for detecting a pressure change in at least one of the oil supply line for supplying lubricating oil to the object to be lubricated and the drain oil line upstream of the orifice is provided. A lubricating oil supply device characterized by the above.
JP34931892A 1992-12-28 1992-12-28 Lubricating oil supply device and abnormality detection method for lubricating oil supply device Expired - Lifetime JP3616113B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP34931892A JP3616113B2 (en) 1992-12-28 1992-12-28 Lubricating oil supply device and abnormality detection method for lubricating oil supply device
CA002112181A CA2112181C (en) 1992-12-28 1993-12-22 Lubricant supplying apparatus
DE4344788A DE4344788C2 (en) 1992-12-28 1993-12-28 lubricator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34931892A JP3616113B2 (en) 1992-12-28 1992-12-28 Lubricating oil supply device and abnormality detection method for lubricating oil supply device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2002135769A Division JP2002333096A (en) 2002-05-10 2002-05-10 Lubricant feeder and abnormality detecting method for the same

Publications (2)

Publication Number Publication Date
JPH06201092A true JPH06201092A (en) 1994-07-19
JP3616113B2 JP3616113B2 (en) 2005-02-02

Family

ID=18402967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34931892A Expired - Lifetime JP3616113B2 (en) 1992-12-28 1992-12-28 Lubricating oil supply device and abnormality detection method for lubricating oil supply device

Country Status (3)

Country Link
JP (1) JP3616113B2 (en)
CA (1) CA2112181C (en)
DE (1) DE4344788C2 (en)

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DE102005031770B4 (en) * 2005-07-07 2014-05-28 Rebs Zentralschmiertechnik Gmbh Apparatus and method for distributing viscous lubricant delivered by an air flow
DE102012106187B4 (en) * 2012-07-10 2015-05-28 Rebs Zentralschmiertechnik Gmbh Device for supplying a lubricating point with a viscous lubricant
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JP2009024763A (en) * 2007-07-19 2009-02-05 Daido Metal Co Ltd Oil air lubrication system
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US11432670B2 (en) 2020-03-11 2022-09-06 PROPERTY AGENT Inc. Delivery object reception device

Also Published As

Publication number Publication date
CA2112181C (en) 1999-02-16
DE4344788C2 (en) 2003-02-20
JP3616113B2 (en) 2005-02-02
DE4344788A1 (en) 1994-07-07
CA2112181A1 (en) 1994-06-29

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