DE146819C - - Google Patents

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Publication number
DE146819C
DE146819C DENDAT146819D DE146819DA DE146819C DE 146819 C DE146819 C DE 146819C DE NDAT146819 D DENDAT146819 D DE NDAT146819D DE 146819D A DE146819D A DE 146819DA DE 146819 C DE146819 C DE 146819C
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DE
Germany
Prior art keywords
scale
discs
slots
disk
read
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.)
Active
Application number
DENDAT146819D
Other languages
German (de)
Publication of DE146819C publication Critical patent/DE146819C/de
Active legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/40Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Der Apparat beruht auf dem Prinzip der stroboskopischen Scheiben. Um mit demselben genaue Messungen vornehmen zu können, werden die durch den ungleichform igen Gang der einen Scheibe hervorgerufenen oszillierenden Bewegungen der Luftschlitze bei vorliegender Erfindung auf einer Skala abgelesen, und die beiden rotierenden Scheiben am Umfang mit einer großen Anzahl sehr schmaler Luftschlitze versehen.The device is based on the principle of stroboscopic discs. To with the same Accurate measurements can be made by the non-uniformity igen course of the oscillating movements of the louvers caused by a disc in the present invention read on a scale, and the two rotating Provided discs on the circumference with a large number of very narrow air slots.

Der den Gegenstand vorliegender Erfindung bildende Apparat besteht somit aus einer Scheibe A mit einer großen Anzahl in bekannter Weise angebrachter schmaler Schlitze oder sonstiger passender Ausschnitte am Umfang, welche an der Kraftmaschine angebracht wird, also mit ungleichförmiger Geschwindigkeit rotiert, und einer zweiten, mit > ebensovielen Schlitzen versehenen Scheibe B, welche unmittelbar vor A mit gleichförmiger Geschwindigkeit, aber entgegengesetzter Drehrichtung rotiert. Die Achsen beider Scheiben fallen in eine Gerade.The apparatus forming the subject of the present invention thus consists of a disk A with a large number of narrow slots or other suitable cutouts made in a known manner on the circumference, which is attached to the prime mover, i.e. rotates at a non-uniform speed, and a second, with> as many Slotted disc B, which rotates immediately in front of A at the same speed, but in the opposite direction of rotation. The axes of both disks fall into a straight line.

Zwischen der Scheibe A und der Kraftmaschine wird in der Höhe der Schlitze eine ruhende Scheibe mit Skala angebracht. Zur bequemen Ablesung wird dieselbe transparent gemacht und von hinten beleuchtet. Der Beschauer sieht parallel der Achse durch die Schlitze auf die. Skala. A stationary disk with a scale is attached between disk A and the prime mover at the level of the slots. It is made transparent and backlit for easy reading. The viewer sees through the slits parallel to the axis. Scale.

Sobald beide Scheiben dieselbe mittlere Geschwindigkeit besitzen, erscheint auf der Skala ein heller Streifen in dunklem Feld, der entsprechend der Winkelabweichungen auf der Skala hin und her pendelt. Bei Änderung der Tourenzahl einer Scheibe wandert der Streifen auf der Skala hin und her. Es läßt sich mit dem Apparat somit auch bequem die bekannte Variation der Tourenzahl nachweisen, welche bei Kraftmaschinen auftreten, die mit einem Ungleichförmigkeitsgrad behaftet sind.As soon as both discs have the same average speed, appears on the Scale a light stripe in a dark field, which corresponds to the angular deviations oscillates back and forth on the scale. When changing the number of revolutions of a disc the stripe moves back and forth on the scale. It can thus be used with the apparatus also conveniently prove the known variation of the number of revolutions, which in power machines occur, which are afflicted with a degree of nonuniformity.

Die. Scheiben können bei passender Form der Schlitze auch in gleichem Sinn rotieren. Statt beide Scheiben mit Schlitzen zu versehen, kann die eine am Umfang mit einer Skala versehen werden. Die dritte ruhende Scheibe fällt dann weg, und die Ausschläge werden mit einem Diopter abgelesen.The. Disks can also rotate in the same direction if the slots are of the right shape. Instead of providing both discs with slots, one can have a Be provided with a scale. The third dormant disk then falls away, and the rashes are read with a diopter.

Die an einer schnellaufenden Dampfdynamo, mit 360 Touren, vorgenommenen Versuche ergaben aber, daß sich für genaue Messungen eigentlich nur der oben beschriebene Apparat mit ruhender Skala eignet.Those made on a high-speed steam dynamo with 360 tours Tests have shown, however, that only the one described above is actually suitable for precise measurements Apparatus with a stationary scale is suitable.

Claims (1)

Patent-Anspruch :Patent claim: Ein Apparat zur Bestimmung des Ungleichförmigkeitsgrades und der Winkelabweichung von Kurbelkraftmaschinen mit Hilfe stroboskopischer Scheiben, dadurch gekennzeichnet, daß die beiden sich drehenden Scheiben derart mit einer Skala verbunden werden, daß die Größe der durch den. ungleichförmigen Gang der einen Scheibe hervorgerufenen oszillierenden Bewegungen der Luftschlitze an dieser Skala abgelesen werden kann.An apparatus for determining the degree of non-uniformity and the angular deviation of crank engines with the help of stroboscopic discs, thereby characterized in that the two rotating discs are connected to a scale so that the size of the through the. uneven motion of the oscillating caused by a disk Movements of the air slots can be read on this scale. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT146819D Active DE146819C (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959686C (en) * 1955-12-22 1957-03-07 Fortuna Werke Spezialmaschinen Method and device for measuring the elastic phase shift of two or more synchronously running, parallel shafts, motors or the like as a function of the changing load on the connection
US3276240A (en) * 1963-07-23 1966-10-04 F W Stewart Corp Speed comparator
US3654480A (en) * 1969-10-17 1972-04-04 Nat Res Dev Tachogenerators which determine the speed and acceleration of a rotating shaft by using two counter rotating shutters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959686C (en) * 1955-12-22 1957-03-07 Fortuna Werke Spezialmaschinen Method and device for measuring the elastic phase shift of two or more synchronously running, parallel shafts, motors or the like as a function of the changing load on the connection
US3276240A (en) * 1963-07-23 1966-10-04 F W Stewart Corp Speed comparator
US3654480A (en) * 1969-10-17 1972-04-04 Nat Res Dev Tachogenerators which determine the speed and acceleration of a rotating shaft by using two counter rotating shutters

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