EP2901068A2 - Distributeur de lubrifiant pour distribuer du lubrifiant à au moins un point de lubrification ainsi que procédé pour le faire fonctionner - Google Patents

Distributeur de lubrifiant pour distribuer du lubrifiant à au moins un point de lubrification ainsi que procédé pour le faire fonctionner

Info

Publication number
EP2901068A2
EP2901068A2 EP13766533.7A EP13766533A EP2901068A2 EP 2901068 A2 EP2901068 A2 EP 2901068A2 EP 13766533 A EP13766533 A EP 13766533A EP 2901068 A2 EP2901068 A2 EP 2901068A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
lubricant distributor
metering piston
hall sensor
distributor
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Withdrawn
Application number
EP13766533.7A
Other languages
German (de)
English (en)
Inventor
Armin Guenther
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.)
SKF Lubrication Systems Germany GmbH
Original Assignee
SKF Lubrication Systems Germany AG
SKF Lubrication Systems Germany GmbH
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 SKF Lubrication Systems Germany AG, SKF Lubrication Systems Germany GmbH filed Critical SKF Lubrication Systems Germany AG
Publication of EP2901068A2 publication Critical patent/EP2901068A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16N25/00—Distributing equipment with or without proportioning devices
    • F16N25/02—Distributing equipment with or without proportioning devices with reciprocating distributing slide valve
    • 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
    • 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
    • F16N29/04—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 enabling a warning to be given; enabling moving parts to be stopped
    • 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
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication 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
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • F16N7/385—Central lubrication systems

Definitions

  • Lubricant distributor for the delivery of lubricant to at least
  • the invention relates to a lubricant distributor for the delivery of lubricant to at least one lubrication point, wherein the lubricant distributor has a lubricant distributor housing, in which a metering piston in a cylinder bore is arranged to move back and forth, wherein detector means are provided, with which the position of the metering piston at least in one Piston position can be detected, wherein the detector means comprise a Hall sensor, which is arranged in an adapter piece, wherein the adapter piece is arranged on the lubricant distributor housing, that the Hall sensor can detect the metering piston, if it is in the cylinder bore in one of its end positions located. Furthermore, the invention relates to a method for operating such a lubricant distributor.
  • Lubricant distributor of the generic type are well known as such. They serve to dispense the lubricant dosed to the lubrication points. They are often executed in block design and are designed to deliver different dosing volumes, each lubricant distributor at its two end faces z. B. may have two threaded holes for the optional connection of two main lines of a centralized lubrication system. To connect the lines to the lubrication points of the lubricant distributor z. B. eight threaded holes. The lubricant metering itself takes place by means of a metering piston, which is movably arranged in the lubricant distributor housing in a cylinder bore. Each time the metering piston strokes, a defined amount of lubricant is removed. given.
  • a control piston For the control of the dosing usually a control piston is provided.
  • the spool opens and closes the two main lines.
  • the control piston moves in one direction or the other and thus releases one of the two main lines, which moves in the sequence and the metering and emits a corresponding amount of lubricant.
  • a lubricant distributor of the type mentioned is disclosed in US 2006/0243529 AI.
  • Lubricant distributors of a similar type are known, for example, from US Pat. No. 5,926,018 A, from US 2010/0282542 A1, from DE 10 2006 012 810 A1 and from DE 10 2006 001 317 A1.
  • US Pat. No. 5,926,018 A from US 2010/0282542 A1
  • DE 10 2006 012 810 A1 from DE 10 2006 001 317 A1.
  • the general task of distributors is described in detail and the operation explained in detail. In this respect, reference is expressly made to these documents.
  • the invention has for its object to provide a lubricant distributor of the type mentioned above and to provide a method for its operation, so that it is possible with little effort and thus cost in a process-stable manner, the adjoining the distributor lubricant lines in terms of blockage and in terms of demolition chen. In addition, even without the presence of a blockage or a tear, the lubrication should be easily monitored for compliance by the distributor.
  • the solution to this problem by the invention is characterized in that the adapter piece has an inlet bore for the metering piston in the end region facing the metering piston.
  • Axially to the cylinder bore can connect in at least one axial end portion of a threaded portion into which a screw portion of the adapter piece is screwed.
  • the diameter of the cylinder bore is preferably smaller than the diameter of the threaded portion.
  • the adapter piece is preferably made of stainless steel.
  • the space formed by the inlet bore and a receiving space for the Hall sensor are separated from each other in a preferred embodiment by a continuous floor. This facilitates the sealing of the system.
  • the method for operating such a lubricant distributor comprises the following steps: a) Before the lubricant distributor is operated: definition of a time duration of a lubrication cycle and of a time proportion within which the metering piston is to be in one of its end positions during proper lubrication operation; b) During operation of the lubricant distributor: measuring the proportion of time during which the metering piston is in one of its end positions facing the Hall sensor, by evaluating the signal detected by the Hall sensor; c) comparison of the measured time component with the defined time component; d) output of an alarm signal if the measured time component deviates from the defined time component beyond a predetermined tolerance.
  • the steps b) to d) are preferably carried out periodically repeating so as to arrive at a continuous monitoring.
  • an alarm signal "line break” can be triggered if the measured time proportion is longer compared to the defined time part outside the tolerance, because then the metering piston finds too little resistance when it is actuated, so that it reaches the end position more quickly passes and accordingly a total of longer lubrication cycle remains in this.
  • an alarm signal "line blockage” can be triggered if the measured time component is shorter compared to the defined time component outside the tolerance, because then the metering piston does not come fast enough or even not at its end position, which is an indication of this provides that the line is added.
  • the definition of the duration of a lubrication cycle and / or the proportion of time within which the metering piston is to be in one of its end positions during proper lubrication operation can be adjusted when external environmental conditions change.
  • the background is the following: Slow changes - eg. As the transition from summer to fall and the associated temperature and speed change - can be compensated or taken into account in the evaluation of the sensor signals. To avoid false messages - if z. B. a system to be lubricated in winter is switched off and for this operating condition corresponding reference values are stored, which turn off to slower movements, but later in the summer, other reference values are required at startup, as correspondingly faster occur - it is necessary to perform a temperature compensation in the sensor or in the evaluation of its signals.
  • the Hall sensor according to the invention (also called Hall sensor or Hall sensor) is as such a standard available component that uses the Hall effect.
  • Hall sensor When a Hall sensor is swept by a current and brought into a perpendicular magnetic field, it provides an output voltage that is proportional to the product of magnetic field strength and current (Hall effect).
  • Hall sensor provides a signal even when the magnetic field in which it is located is constant.
  • the invention is based on a detection of an end position of the metering piston on the basis of the Hall principle, so that in a very stable manner and with few components, the function of the lubricant distributor can be monitored.
  • the connected lubrication lines from the distributor to the lubrication points, in particular to the bearings, can be monitored for incipient blockage and demolition.
  • the magnetic field is formed or generated with a corresponding element (magnet).
  • the dosing piston or the control piston which is preferably made of mild steel (in particular mild steel), at least not made of stainless steel, changes this magnetic field, resulting in the Hall effect. This change detects the Hall sensor and is evaluated.
  • the sleeve-shaped holder for the Hall sensor is made of stainless steel.
  • the invention is preferably used in two-line systems and in progressive systems. As is known, in two-line systems alternately two supply lines - controlled by a reversing device - supplied with lubricant. In progressive systems, the lubricant is pumped to the progressive manifolds; from there, the lubrication points are supplied via distributor devices.
  • FIG. 1 shows schematically a lubricant supply system for lubrication points, in particular for bearings,
  • FIG. 2 shows a lubricant distributor in section A-A according to FIG. 3,
  • FIG. 3 shows the lubricant distributor according to FIG. 2 in front view
  • Fig. 4 is an adapter piece of the lubricant distributor in partially cut
  • FIG. 5 shows a time chart in which a number of lubrication cycles are shown, wherein for the lubrication cycles the signal detected by a Hall sensor and the pressure of the lubricant in the lubricant outlet are recorded.
  • a lubricant supply system is seen, with the lubrication points 2 in the form of bearings with lubricant, eg. As lubricating oil to be supplied.
  • lubricant eg. As lubricating oil to be supplied.
  • the lubricant is conveyed via two main lines, reference being made in this regard to the statements in the two publications cited above, where details are provided for this purpose.
  • the lubricant distributor 1 supplies the lubricating point (bearing point) 2 from a lubricant outlet 14 (see FIGS. 2 and 3) via a line 13.
  • the lubricant distributor 1 comprises a detector means with which the position of a metering piston or its stay at a defined location Location of its cylinder bore can be determined.
  • the lubricant distributor 1 to a lubricant distributor housing 3, in the - and the following statements relate only to the elements that are relevant in the present case for the inventive concept - a cylinder bore 5 is introduced, in which a metering piston 4 is arranged translationally movable.
  • a cylinder bore 5 is introduced, in which a metering piston 4 is arranged translationally movable.
  • a detector means 6 is arranged, that is screwed, is.
  • the detector means 6 is provided with a Hall sensor 7, with which it can be determined when the metering piston 4 has reached its axial end position in the cylinder bore 5. Accordingly, the Hall sensor 7 supplies a signal only when and only if the metering piston is in its one axial end position.
  • the detector means 6 is designed as a sleeve-shaped adapter piece 8 which (see Fig. 4) has a screw portion 10 at its one axial end. With this screw portion 10, the adapter piece 8 is screwed into a threaded portion 9, which is incorporated in the axial end portion of the cylinder bore 5.
  • the adapter piece 8 in the axial end region, which faces the cylinder bore 5, an inlet bore 1 1, which has a slightly larger diameter than the metering piston 4.
  • the dosing The sierkolben 4 can therefore enter into said inlet bore 1 1 to get into its axial end position.
  • the receiving space in which the Hall sensor 7 is arranged, and the space formed by the inlet hole 1 1, are separated by a bottom 12 from each other. This ensures tightness of the system in a simple manner.
  • FIG. 5 For the operation of the proposed monitoring method, reference is made to FIG. 5.
  • the case is schematically indicated that initially a proper lubrication operation is present.
  • the intact line 13 provides the lubricant with a certain resistance, so that the metering piston 4 takes its time to come to the end position. Accordingly, the time proportion t actual 0 (see Fig. 5, above) is relatively short; This is the time span which exists between reaching the axial end position of the metering piston 4 and reversing the lubricant in the main lines 15. If the line 13 tears off, however, it follows that the metering piston 4 now reaches the axial end position more quickly due to the reduced line resistance. Accordingly, the time component is extended to a value t actual A , which is significantly longer than the value t actual 0 .
  • a functional check of the lubricant distributor 1 takes place with a Hall sensor.
  • the Hall sensor 7 is screwed into the adapter piece 8, which is preferably made of stainless steel.
  • the end position of the metering piston 4 in the lubricant distributor 1 can be reliably detected by the sleeve-shaped adapter 8.
  • the Hall sensor or the detector means can be configured as a universal sensor.
  • the Hall sensor 7 and the adapter piece 8 can be designed so that, for example, at a switching output of the alarm output is output, which indicates that the lubrication line is defective or threatening incipient blockage.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un distributeur de lubrifiant (1) pour distribuer du lubrifiant à au moins un point de lubrification (2), le distributeur de lubrifiant (1) présentant un boîtier (3) dans lequel un piston de dosage (4) est disposé mobile selon un mouvement de va-et-vient dans un alésage (5) de cylindre, des moyens de détection (6) avec lesquels la situation du piston de dosage (4) au moins dans une position du piston peut être détectée. Pour pourvoir surveiller sans grande complexité et donc à peu de frais de manière stable les conduits de lubrifiants se raccordant au distributeur pour ce qui est d'un blocage ou d'une interruption, l'invention prévoit que les moyens de détection (6) comprennent un capteur à effet Hall (7) qui est disposé dans un adaptateur (8), l'adaptateur (8) étant disposé sur le boîtier (3) de manière que le capteur à effet Hall (7) puisse détecter le piston de dosage (4) quand celui-ci se trouve dans une de ses positions terminales dans l'alésage (5) de cylindre. L'invention concerne également un procédé pour faire fonctionner un tel distributeur de lubrifiant.
EP13766533.7A 2012-09-26 2013-09-25 Distributeur de lubrifiant pour distribuer du lubrifiant à au moins un point de lubrification ainsi que procédé pour le faire fonctionner Withdrawn EP2901068A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210217452 DE102012217452B4 (de) 2012-09-26 2012-09-26 Schmierstoffverteiler für die Abgabe von Schmierstoff an mindestens eine Schmierstelle sowie Verfahren zum Betrieb desselben
PCT/EP2013/069941 WO2014048973A2 (fr) 2012-09-26 2013-09-25 Distributeur de lubrifiant pour distribuer du lubrifiant à au moins un point de lubrification ainsi que procédé pour le faire fonctionner

Publications (1)

Publication Number Publication Date
EP2901068A2 true EP2901068A2 (fr) 2015-08-05

Family

ID=49237216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13766533.7A Withdrawn EP2901068A2 (fr) 2012-09-26 2013-09-25 Distributeur de lubrifiant pour distribuer du lubrifiant à au moins un point de lubrification ainsi que procédé pour le faire fonctionner

Country Status (4)

Country Link
US (1) US10113693B2 (fr)
EP (1) EP2901068A2 (fr)
DE (1) DE102012217452B4 (fr)
WO (1) WO2014048973A2 (fr)

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DE102013214425B4 (de) 2012-07-24 2025-02-27 Ifm Electronic Gmbh Magnetoresistiver Näherungsschalter und Verfahren zum Betreiben desselben sowie Anordnung eines Adapters für einen Schmierstoffverteiler
DE102014205975B4 (de) * 2014-03-31 2018-03-15 Skf Lubrication Systems Germany Gmbh Schmiermittelinjektor
DE102016106213A1 (de) * 2016-04-05 2017-10-05 Baier & Köppel GmbH & Co. KG Schmierstoffverteiler mit magnetoresistivem Sensor und Verfahren zur Überwachung eines Schmierstoffverteilers
DE102017200481B4 (de) * 2017-01-13 2025-12-04 Skf Lubrication Systems Germany Gmbh Verfahren zu einem Betrieb eines Schmierstoffverteilsystem
DE102018101772B4 (de) 2018-01-26 2022-06-23 Ifm Electronic Gmbh Schmierstoffverteileranordnung
CN110319332B (zh) * 2018-03-30 2021-12-17 宝山钢铁股份有限公司 一种热轧曲柄式飞剪多点同步润滑系统
CN110925583A (zh) * 2019-12-12 2020-03-27 重庆安特瑞润滑设备有限公司 具有堵塞检测功能的分配器
DE102021204619A1 (de) * 2021-05-06 2022-11-10 Skf Lubrication Systems Germany Gmbh Schmiersystem
DE102021204617A1 (de) * 2021-05-06 2022-11-10 Skf Lubrication Systems Germany Gmbh Schmiersystem
CN114165716B (zh) * 2021-11-18 2023-05-26 山东科技大学 一种润滑脂加注系统及其加注量监测方法
CN115962404A (zh) * 2022-12-30 2023-04-14 其胜威纳(上海)润滑设备有限公司 一种分配器给油器柱塞监控装置

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Also Published As

Publication number Publication date
DE102012217452B4 (de) 2015-05-07
US10113693B2 (en) 2018-10-30
WO2014048973A2 (fr) 2014-04-03
WO2014048973A3 (fr) 2015-01-15
US20160033079A1 (en) 2016-02-04
DE102012217452A1 (de) 2014-03-27

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