EP0070345A1 - Vibrateur à masse déséquilibrée variable - Google Patents

Vibrateur à masse déséquilibrée variable Download PDF

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Publication number
EP0070345A1
EP0070345A1 EP81710027A EP81710027A EP0070345A1 EP 0070345 A1 EP0070345 A1 EP 0070345A1 EP 81710027 A EP81710027 A EP 81710027A EP 81710027 A EP81710027 A EP 81710027A EP 0070345 A1 EP0070345 A1 EP 0070345A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
unbalanced shaft
unbalance
unbalanced
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Withdrawn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
EP81710027A
Other languages
German (de)
English (en)
Inventor
Johannes Ing. grad. Bäumers
Werner Lisken
Heinz Ing. Grad. Lietzke
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.)
Losenhausen Maschinenbau AG and Co KG
Losenhausen Maschinenbau AG
Original Assignee
Losenhausen Maschinenbau AG and Co KG
Losenhausen Maschinenbau AG
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 Losenhausen Maschinenbau AG and Co KG, Losenhausen Maschinenbau AG filed Critical Losenhausen Maschinenbau AG and Co KG
Priority to EP81710027A priority Critical patent/EP0070345A1/fr
Publication of EP0070345A1 publication Critical patent/EP0070345A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/162—Making use of masses with adjustable amount of eccentricity
    • B06B1/165—Making use of masses with adjustable amount of eccentricity with fluid masses or the like

Definitions

  • the invention relates to an unbalance vibrator with an adjustable centrifugal weight on a rotating unbalanced shaft.
  • Unbalance vibrators are known in which two mutually parallel unbalanced shafts, each with a centrifugal weight, rotate in opposite directions. Each of the centrifugal weights generates a centrifugal force rotating with the drive speed. Due to the opposite rotation, the centrifugal force components cancel each other out in one plane, while they add up in the plane perpendicular to it. Directed vibrations are generated in one plane. The position of this level depends on the mutual phase position of the rotating centrifugal weights. The resulting direction of oscillation can be changed by changing this phase position.
  • the invention is based on the object at an unbalanced mass vibration caused by an imbalance between two flyweight 180 0 mutually angularly displaced positions to make switchable.
  • the piston By applying pressure medium to one or the other cylinder chamber, the piston, which acts as a centrifugal weight, is displaced radially to one or the other side of the unbalanced shaft. This corresponds to an angle adjustment by 180 0 .
  • a variable imbalance in a circular oscillator can then be obtained by arranging the cylinder so asymmetrically with respect to the axis of the imbalance shaft that the amount of the two imbalances is different for the two end positions of the piston.
  • the unbalanced shaft also carries a fixed flyweight, the unbalance of which is additively or subtractively superimposed on the unbalance caused by the piston in its two end positions.
  • Fig. 1 denotes an unbalanced shaft on which a cylinder 12 closed at the ends sits.
  • the axis 14 of the cylinder 12 extends perpendicular to the axis 16 of the unbalanced shaft 10.
  • a piston 18 acting as a centrifugal weight is guided in the cylinder 12.
  • the piston 18 divides the cylinder 12 into a first cylinder chamber 20 and a second cylinder chamber 22.
  • a pressure medium control device 24 which is shown in FIG. 3 as a hydraulic circuit diagram, either the first cylinder chamber 20 or the second cylinder chamber 22 can be pressurized with pressure medium.
  • the pressure medium control device 24 which in the preferred exemplary embodiment shown works with a liquid as the pressure medium, contains a pump 26, the liquid to a flow line 28 promotes.
  • a return line 30 leads to a container 32.
  • a line 34 leads to the first cylinder chamber .20, and a line 36 leads to the second cylinder chamber 22.
  • the supply line 28 and the return line 30 on the one hand and the lines 34 and 36 on the other hand are operated 4/3-way valve 38 connected to each other.
  • the supply line 28 is connected to the line 36 and the cylinder chamber 22, and the cylinder chamber 20 is connected to the tank 32 via the line 34 and the return line 30.
  • the piston 18 is then pushed to the left in FIG. 3 (upward in FIG. 1) by the liquid conveyed by the pump 26, and the liquid from the cylinder chamber 20 is displaced into the container 32. If the 4/3-way valve remains in the right or left position, the piston 18 moves into one end position in each case. But it is it is also possible to return the 4/3-way valve 38 to the central position at a desired point in the piston stroke and to hydraulically lock the piston 18 in the position then reached. When the piston 18 has reached an end position, the liquid delivered by the pump 26 can flow off via a conventional pressure limiter 40.
  • the lines 34 and 36 each lead to a stationary connector 42 and 44, respectively.
  • Each of the connecting pieces 42 and 44 sits in front of an end face of the unbalanced shaft 10 and has an axial pin 46 or 48, which protrudes sealingly into a cylindrical recess 50 or 52 in the end face of the unbalanced shaft 10.
  • An axial channel 54 or 56 runs through the connecting piece 42 or 44 and its pin 46 or 48, which is connected to the line 34 or 36 and opens into the recess 50 or 52.
  • a channel 58 extends from the recess 50 and runs axially in the unbalanced shaft 10 and then in the wall of the cylinder 12 up to its closed end that closes the cylinder chamber 20.
  • a channel 60 extends from the recess 52, axially in the unbalanced shaft 10 and then in the wall of the cylinder 12 up to which the cylinder chamber 22 closes , closed end runs. There, the channel 60 opens into the cylinder chamber 22 on the end face of the cylinder 12.
  • a second unbalanced shaft 62 is arranged parallel to the unbalanced shaft 10 carrying the cylinder 12.
  • the second unbalanced shaft 62 carries a fixed flyweight 64, which here consists of two axially on both sides of the Cylinder 12 arranged parts 64 A and 64 B.
  • the second unbalanced shaft 62 carries a gearwheel 66 which is non-rotatably connected to the unbalanced shaft 62.
  • the gear 66 is in engagement with a gear 68 which sits on the unbalanced shaft 10 and is non-rotatably connected thereto.
  • the second unbalanced shaft 62 is driven by suitable drive means (not shown).
  • the unbalanced shaft 10 is then driven in the opposite direction to the unbalanced shaft 62 by the gear wheels 66, 68.
  • the mass distribution is selected such that the unbalance of the piston 18 acting as a flyweight, when it is in an end position, is just equal to the unbalance of the flyweight 64. In this way, vibrations occurring in one plane.
  • the displacement of the piston 18 from one end position to the other corresponds to a change in the unbalance on the unbalanced shaft by 180 °.
  • the plane of the resulting vibrations runs at 45 ° from the bottom left to the top right.
  • the centrifugal force of the centrifugal weight 64 acts downward, the centrifugal force of the piston 18 to the left, so that the resulting force is directed below 45 ° to the left below.
  • the centrifugal force of the centrifugal weight 64 acts upwards and the centrifugal force of the piston 18 acts to the right, and the resulting force is directed upwards to the right.
  • the vibrations accordingly act in one from the bottom right to the left 2 at the top in FIG.
  • the vibrating plate moves to the right in the former case and to the left in the latter case.
  • the piston 18 By actuating the 4/3-way valve 38, the piston 18 can also be hydraulically blocked in a central position in the cylinder 12, which is also shown in FIG. 2. In this case, there is no imbalance on the unbalanced shaft 10.
  • the unbalance vibrator then acts as a "circular oscillator" with the rotating centrifugal force caused by the centrifugal weight 64, and the vibrating plate works in the standing position
  • a reduced vibration force is more desirable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP81710027A 1981-07-18 1981-07-18 Vibrateur à masse déséquilibrée variable Withdrawn EP0070345A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81710027A EP0070345A1 (fr) 1981-07-18 1981-07-18 Vibrateur à masse déséquilibrée variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81710027A EP0070345A1 (fr) 1981-07-18 1981-07-18 Vibrateur à masse déséquilibrée variable

Publications (1)

Publication Number Publication Date
EP0070345A1 true EP0070345A1 (fr) 1983-01-26

Family

ID=8188620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81710027A Withdrawn EP0070345A1 (fr) 1981-07-18 1981-07-18 Vibrateur à masse déséquilibrée variable

Country Status (1)

Country Link
EP (1) EP0070345A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042010A1 (fr) * 2000-11-22 2002-05-30 Wacker Construction Equipment Ag Dispositif de reglage continu de masses non equilibrees de plaques vibrantes orientables
ES2233129A1 (es) * 2002-07-04 2005-06-01 Uma Hermanos Alquezar, S.A. Sistema vibrador por masa rotativa excentrica.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB838479A (en) * 1957-08-08 1960-06-22 Vincent Gabriel Bernard Dupouy A vibrator for sieves, screens and shaker tables and for other uses
DE1874260U (de) * 1961-09-12 1963-06-20 Motorenfabrik Otto Wimmer Ruettlunwucht.
DE2828290A1 (de) * 1977-07-23 1979-02-08 Lionel Arthur Reynolds Vibrator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB838479A (en) * 1957-08-08 1960-06-22 Vincent Gabriel Bernard Dupouy A vibrator for sieves, screens and shaker tables and for other uses
DE1874260U (de) * 1961-09-12 1963-06-20 Motorenfabrik Otto Wimmer Ruettlunwucht.
DE2828290A1 (de) * 1977-07-23 1979-02-08 Lionel Arthur Reynolds Vibrator
FR2397890A1 (fr) * 1977-07-23 1979-02-16 Reynolds Lionel Dispositif a vibrations pour rouleaux compresseurs notamment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042010A1 (fr) * 2000-11-22 2002-05-30 Wacker Construction Equipment Ag Dispositif de reglage continu de masses non equilibrees de plaques vibrantes orientables
US7017679B2 (en) 2000-11-22 2006-03-28 Wacker Construction Equipment Ag Device for the continuous adjustment of unbalance of steerable vibration plates
ES2233129A1 (es) * 2002-07-04 2005-06-01 Uma Hermanos Alquezar, S.A. Sistema vibrador por masa rotativa excentrica.

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT DE SE

RBV Designated contracting states (corrected)

Designated state(s): AT DE SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840104

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LIETZKE, HEINZ, ING. GRAD.

Inventor name: LISKEN, WERNER

Inventor name: BAEUMERS, JOHANNES, ING. GRAD.