EP0301651B1 - Dispositif pour positionner un capteur - Google Patents

Dispositif pour positionner un capteur Download PDF

Info

Publication number
EP0301651B1
EP0301651B1 EP88201557A EP88201557A EP0301651B1 EP 0301651 B1 EP0301651 B1 EP 0301651B1 EP 88201557 A EP88201557 A EP 88201557A EP 88201557 A EP88201557 A EP 88201557A EP 0301651 B1 EP0301651 B1 EP 0301651B1
Authority
EP
European Patent Office
Prior art keywords
guide tube
positioning device
screw
adjusting screw
tube
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.)
Expired - Lifetime
Application number
EP88201557A
Other languages
German (de)
English (en)
Other versions
EP0301651A1 (fr
Inventor
Georg Callsen
Ulrich Dr. Kindler
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.)
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0301651A1 publication Critical patent/EP0301651A1/fr
Application granted granted Critical
Publication of EP0301651B1 publication Critical patent/EP0301651B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B5/00—Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus

Definitions

  • the invention relates to a positioning device for a transducer, which is attached to one end of a guide tube, through which a line connected to the transducer runs to an evaluation unit and the other end of which is coupled to a screwing device which is arranged in a stationary manner and is used for longitudinal displacement of the guide tube.
  • Positioning devices of this type are used, for example, to carry out speed measurements or vibration measurements on inaccessible rotating parts of a machine.
  • the positioning device mentioned at the outset is known from the "21 001 Proximity Probe Housing Kit” brochure from Bently Nevada, USA.
  • a housing in which a screwing device for longitudinal displacement of a guide tube is located is attached to the machine at an accessible location.
  • the guide tube has an external thread at one end and a transducer at its other end.
  • the transducer is brought to the rotating part of the machine by longitudinally displacing the guide tube.
  • the guide tube is rotated in a nut fastened in the housing, which has an internal thread that matches the external thread of the guide tube.
  • the measuring sensor is connected to an evaluation unit outside the housing via a line running in the guide tube.
  • the guide tube When the guide tube is rotated (longitudinal displacement), the line must be detached from the evaluation unit so that there is no twisting of the line and thus no destruction of the line.
  • the invention has for its object to provide a positioning device which is simple in construction and enables simple adjustment without detaching the line from the evaluation unit.
  • the longitudinal displacement of the guide tube which is not rotatably attached, is carried out by screwing an adjusting screw into or out of the guide tube. Since the guide tube does not turn, the line connecting the evaluation unit to the sensor cannot be turned. A plug contact is therefore not required on the evaluation unit.
  • the adjustment process is also simplified. Because when positioning, the adjustment process can take place depending on the received measurement signal from the transducer.
  • the guide tube In order to prevent rotation of the guide tube, it can have, for example, a polygonal cross-section (for example a square tube) which can be moved longitudinally in a stationary holder which has a suitable polygonal opening.
  • a second way of preventing the guide tube from rotating is to close a guide tube with a round cross section use to which a nozzle is attached, which is longitudinally displaceable within a fixed guide rail.
  • the adjusting screw is tubular.
  • a more complex way of leading the line to the evaluation unit than leading the line out of the adjusting screw designed as a tube would be through a lateral opening on the guide tube.
  • the adjusting screw is rotatably mounted in a stationary holder.
  • the holder has an opening in which the adjusting screw is rotatably mounted. So that the adjusting screw is not longitudinally displaceable, it can have a head at one end of the opening, the circumference of which is larger than the opening of the holder, and can be held on the other side with a snap ring. It is also possible to make the part of the tube that lies within the opening and also the opening itself smaller in scope than the part of the tube on which the external thread runs or that lies outside the opening.
  • a machine 1 which contains a rotating shaft 2.
  • the shaft 2 is encapsulated by a machine housing 3.
  • a positioning device 6 is used which is attached to the machine housing 3 and which contains an adjusting device and a guide tube 5 with a sensor 4 attached to the end of the guide tube 5.
  • the transducer 4 is brought to the shaft 2 by the longitudinal displacement of the guide tube 5 at the desired distance.
  • the positioning device 6 has a cylindrical, largely closed housing 7, which consists of an upper housing part 8 and a lower housing part 9.
  • the upper housing part 8 and the lower housing part 9 are held together by a screw connection 10.
  • a circular opening 11 At the end of the housing 7, which forms the lower housing part 9, there is a circular opening 11, the diameter of which is approximately equal to the outer diameter of the circular guide tube 5.
  • a tubular connector 12 provided with an external thread is attached.
  • the inner diameter of the tubular connector 12 corresponds to the diameter of the opening 11.
  • the guide tube 5 extends into the housing 7.
  • a sealing ring 13 is inserted, which is to prevent a liquid or a gas can penetrate into the interior of the housing 7.
  • a nut 14 is provided which is rotated onto the socket 12.
  • the end 15 of the guide tube 5, which lies within the housing 7, has an internal thread 15a, into which a tubular adjusting screw 16 is screwed.
  • a plate 17 bent at right angles at its ends is arranged parallel to the guide tube 5 or to the adjusting screw 16.
  • the legs 27 and 28 formed by the bending of the plate 17 have the same length and are designed to be curved in accordance with the cylindrical housing 7 on the outer edge.
  • the leg 28 of the plate 17 is fastened to the lower housing part 9 by a screw 18.
  • the length of the plate 17, without the legs 27 and 28, is chosen so that there is a free space below the end of the upper housing part 8.
  • a bracket 20 is fastened to the plate 17 by means of a screw 19 and has an opening for receiving the adjusting screw 16.
  • the adjusting screw 16 is rotatably held on the one hand by a hexagon head 25 and on the other hand by a snap ring 21 in the opening.
  • the attachment point of the bracket 20 is selected so that there is a sufficient displacement length for the guide tube 5.
  • a pin 22 is attached at right angles to the guide tube 5 and can be displaced within a longitudinal gap 23 in the plate 17.
  • the length of the longitudinal gap 23 is chosen so that a sufficient displacement of the guide tube 5 is ensured.
  • the width of the longitudinal gap 23 is chosen so that the pin 22 just protrudes and thus no rotation of the guide tube 5 can occur.
  • the sensor 4 is connected to a line 24 which runs within the guide tube 5 and the tubular adjusting screw 16.
  • the line 24, which protrudes from the adjusting screw 16, is connected to electrical contacts of an evaluation unit 29 shown schematically. These electrical contacts are attached to the leg 27.
  • the evaluation unit 29 is accommodated within the space formed by the plate 17.
  • the guide tube 5 is displaced longitudinally by rotating the adjusting screw 16 which is mounted in a fixed manner in the holder 20. Twisting and destruction of the line 12 cannot occur. Plug contacts that connect the evaluation unit 29 to the line 24 are therefore not required.
  • the upper housing part 8 In order to be able to adjust the guide tube 5 by means of the adjusting screw 16, the upper housing part 8 must be separated from the lower housing part 9.

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Geophysics And Detection Of Objects (AREA)

Claims (3)

  1. Dispositif de positionnement pour un capteur (4) qui est fixé à une extrémité d'un tube de guidage (5) dans lequel passe un conducteur (24) conneeté au capteur (4) et s'étendant jusqu'à une unité d'évaluation, et dont l'autre extrémité (15) est couplée à un dispositif à vis monté fixe et servant à déplacer le tube de guidage (5) dans le sens de sa longueur, caractérisé en ce que le tube de guidage (5) pouvant être déplacé dans le sens de sa longueur et pourvu d'un taraudage (15a) est monté de manière à ne pas pouvoir tourner, tandis que le dispositif à vis comporte une vis d'ajustement (16) fixe montée à rotation dans le taraudage du tube de guidage (5).
  2. Dispositif de positionnement suivant la revendication 1, caractérisé en ce que la vis d'ajustement (16) est de forme tubulaire.
  3. Dispositif de positionnement suivant la revendication 1 ou 2, caractérisé en ce que la vis d'ajustement (16) est montée à rotation dans une monture fixe (20).
EP88201557A 1987-07-28 1988-07-18 Dispositif pour positionner un capteur Expired - Lifetime EP0301651B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873724897 DE3724897A1 (de) 1987-07-28 1987-07-28 Positioniervorrichtung fuer einen messwertaufnehmer
DE3724897 1987-07-28

Publications (2)

Publication Number Publication Date
EP0301651A1 EP0301651A1 (fr) 1989-02-01
EP0301651B1 true EP0301651B1 (fr) 1992-12-30

Family

ID=6332486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201557A Expired - Lifetime EP0301651B1 (fr) 1987-07-28 1988-07-18 Dispositif pour positionner un capteur

Country Status (4)

Country Link
US (1) US4876905A (fr)
EP (1) EP0301651B1 (fr)
JP (1) JPH0197815A (fr)
DE (2) DE3724897A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI84400C (fi) * 1989-04-20 1991-11-25 Janesko Oy Anordning foer foerflyttning av ett maethuvud i ett maetdon till ett processutrymme och bort fraon ett processutrymme.
DE4033064C2 (de) * 1990-10-18 1994-02-17 Opel Adam Ag Vorrichtung zur Einstellung des Abstandes eines Bewegungssensors
DE4109620C2 (de) * 1991-03-23 1994-08-11 Leo Roeckert Lagervorrichtung für Tauchbadwärmer
US5349850A (en) * 1992-11-19 1994-09-27 General Electric Company Instrumentation light probe holder
US5578772A (en) * 1993-12-01 1996-11-26 Kadis; Paul M. Method and fixture for holding threaded valve assemblies for testing
DE19505172A1 (de) * 1995-02-16 1996-08-22 Elster Produktion Gmbh Drehkolbenzähler zur Volumenmessung eines Fluides
US6227703B1 (en) * 1998-12-30 2001-05-08 Adaptive Instruments Corporation Variable length sensor probe system
DE102015006106A1 (de) * 2015-05-09 2016-11-10 Man Diesel & Turbo Se Fluidenergiemaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780094A (en) * 1954-04-22 1957-02-05 Standard Oil Co Pipeline mount for thermistor installation
US2946218A (en) * 1954-12-17 1960-07-26 Tinius Olsen Testing Mach Co Tunable pick-up
GB1283920A (en) * 1968-11-18 1972-08-02 Serck Industries Ltd Rotary actuator
US3859847A (en) * 1972-09-06 1975-01-14 Westinghouse Electric Corp Vibration monitoring device using accelerometer to measure displacement
DE2625265A1 (de) * 1976-06-04 1977-12-15 Siemens Ag Einbauarmatur fuer beruehrungslos messende messwertaufnehmer an schwer zugaenglichen maschinenteilen
SU752143A1 (ru) * 1977-04-04 1980-07-30 Специальное проектно-конструкторское бюро средств автоматизации нефтедобычи и нефтехимии "Нефтехимпромавтоматика" Устройство дл контрол параметров среды в трубопроводах
US4164864A (en) * 1978-07-31 1979-08-21 Allis-Chalmers Corporation Method and apparatus for supporting a sensor in a normally inacessible area of a machine
JPS6036298A (ja) * 1983-08-10 1985-02-25 富士電機株式会社 電動シリンダ
FR2567979B1 (fr) * 1984-07-18 1986-12-19 Somfy Actionneur lineaire a systeme vis-ecrou
JPS61144462A (ja) * 1984-12-17 1986-07-02 Seiko Instr & Electronics Ltd 産業用ロボツトの駆動装置

Also Published As

Publication number Publication date
DE3877080D1 (de) 1993-02-11
EP0301651A1 (fr) 1989-02-01
JPH0197815A (ja) 1989-04-17
US4876905A (en) 1989-10-31
DE3724897A1 (de) 1989-02-09

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