EP0085271A1 - Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation - Google Patents

Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation Download PDF

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Publication number
EP0085271A1
EP0085271A1 EP82710002A EP82710002A EP0085271A1 EP 0085271 A1 EP0085271 A1 EP 0085271A1 EP 82710002 A EP82710002 A EP 82710002A EP 82710002 A EP82710002 A EP 82710002A EP 0085271 A1 EP0085271 A1 EP 0085271A1
Authority
EP
European Patent Office
Prior art keywords
shaft
locking
speed
unbalance
movable
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
EP82710002A
Other languages
German (de)
English (en)
Other versions
EP0085271B1 (fr
Inventor
Heinz Baier
Hans Werner Kürten
Hans-Georg Waschulewski
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 EP82710002A priority Critical patent/EP0085271B1/fr
Priority to DE8282710002T priority patent/DE3261088D1/de
Priority to US06/454,951 priority patent/US4515027A/en
Publication of EP0085271A1 publication Critical patent/EP0085271A1/fr
Application granted granted Critical
Publication of EP0085271B1 publication Critical patent/EP0085271B1/fr
Expired 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
    • B06B1/164—Making use of masses with adjustable amount of eccentricity the amount of eccentricity being automatically variable as a function of the running condition, e.g. speed, direction
    • 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
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18344—Unbalanced weights
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18544—Rotary to gyratory
    • Y10T74/18552—Unbalanced weight

Definitions

  • the invention relates to an unbalance exciter with a rotating shaft and a flywheel rigidly connected to it, with at least one generally sector-shaped, movable flywheel which is freely rotatable relative to the shaft and with a driver which interacts with the movable flywheel during the rotation of the shaft and which moves the movable flywheel in the Takes way that in one direction of rotation of the shaft, the imbalance is greater and in the other direction of rotation of the shaft, the imbalance is smaller.
  • Imbalance exciters of this type are used, for example, in road construction machines to generate vibrations.
  • a shaft with a swing piece rigidly connected thereto is mounted in a housing.
  • Movable swing pieces which are generally semicircular sector-shaped, are freely rotatable on both sides of the swing piece Shaft mounted.
  • the rigidly connected flywheel carries a driver in a vibrating metal bearing, which runs axially parallel to the shaft and comes into contact with the movable flywheels in semi-cylindrical recesses when the shaft rotates and takes them with them.
  • the excitation force is greater or smaller, depending on how the centrifugal force of the swing piece rigidly connected to the shaft is geometrically added to the centrifugal force of the movable swing pieces.
  • the object of the invention is accordingly to provide an imbalance exciter of the aforementioned type, in which no harmful changes in the resulting centrifugal force are caused by the inertia of the movable swinging pieces.
  • this object is achieved in that a speed-dependent locking member is provided in a locking position and in a release position and in the locking position of the locking member the movable swing piece is held in contact with the driver and that the locking member is arranged in the locked position as long as the speed the shaft is greater than a switching speed at which the larger unbalance generates the same excitation force as the smaller unbalance at its operating speed.
  • the load speed is the speed at which the excitation force of the unbalance exciter is no longer sufficient to overcome the axle load of the construction machine and cause the roller body to jump.
  • the switching speed is advantageously less than the load speed in order to reliably exclude harmful effects when the movable swinging elements are adjusted due to inertia.
  • the locking member can be a hysteresis-loaded, spring-loaded locking bolt which can be adjusted radially outward and radially inward under the force of a spring in a radial recess in the shaft.
  • the switching speed can then be determined in that the centrifugal force acting on the locking pin is the same as the spring force acting on the locking pin.
  • the hysteresis is caused by the fact that the centrifugal force acting on the locking pin is greater than in the release position due to its different radial position, so that the adjustment of the movable swinging piece in the start-up phase of the unbalance exciter is certainly not hindered by the adjustment of the locking pin.
  • the installation of the movable swinging piece on the locking pin during the phase-out phase of the unbalance exciter also has a favorable effect, since the transverse force thus created enables the locking pin to be released under the action of the spring only at a relatively lower speed.
  • Fig. 1 shows a bearing housing 1, in which a shaft 2 with a rigidly connected swing piece 3 is mounted in bearings 4. One end of the shaft 2 is led out of the bearing housing 1 and connected to a drive motor (not shown). Movable swing pieces 5, which are freely rotatable on the shaft 2, are located on both sides of the rigidly connected swing piece 3.
  • Each movable swing piece 5 (see FIG. 2) has an inner bore which is adapted to the outer diameter of the shaft 2 and extends eccentrically with respect to the shaft 2.
  • the movable flywheel 5 forms in part a massive, approximately semi-circular flywheel 6 in cross-section and the other partly parallel, also approximately semi-circular guide rings 7 between the end faces of the flywheel 6.
  • An axial displacement of the movable flywheel 5 on the shaft 2 becomes prevented by a driver 8 in the form of a driver bolt, which projects between the guide rings 7 and is screwed into a radial threaded bore 9 on the circumference of the shaft 2.
  • the radial bore 9 is offset by 90 ° against the central plane of the rigidly connected swing piece 3.
  • the driving pin for shock absorption is provided with a buffer ring 10 made of an elastic material.
  • the shaft 2 On the diametrically opposite side of the driving pin, the shaft 2 is provided with a stepped radial recess in the form of a blind bore 11.
  • the blind bore 11 receives a locking member 12 which is designed as a locking bolt with a head 13 which is movable in the blind bore 11.
  • the blind bore 11 widens on the circumference of the shaft 2 to an extension 14 into which a guide member 15 is inserted and secured with a locking ring 16.
  • the locking member 12 is guided in the guide member 15. Between the guide member 15 and the head 13 there is a spring 17 which biases the locking member 12 in the retracted position shown.
  • the springs 17 are dimensioned such that the locking members 12 are only retracted at a switching speed which is 80% of the load speed. This ensures that the inertia-related adjustment of the movable swinging pieces takes place independently of the respective operating speed only when this adjustment no longer influences the effect exerted by the road construction machine; a further security is obtained in that a transverse force is created by the contact of the movable swing piece 5 on the locking member 12, which inhibits the retraction of the locking member 12.
  • the locking member 12 In the retracted release position, the locking member 12 is located at a smaller distance from the axis of rotation of the shaft 2; To generate a centrifugal force that overcomes the force of the spring 17, a rotational speed is therefore required which is greater than the rotational speed for the withdrawal from the locked position.
  • the hysteresis caused thereby ensures that the transition of the S p err limbs 12 into the blocking position only takes place when the movable swing pieces 5 have assumed their operating position. This hysteresis is reinforced by the above-mentioned transverse force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
EP82710002A 1982-01-29 1982-01-29 Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation Expired EP0085271B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82710002A EP0085271B1 (fr) 1982-01-29 1982-01-29 Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation
DE8282710002T DE3261088D1 (en) 1982-01-29 1982-01-29 Vibrator with movable centrifugal parts adjustable in dependence upon the rotation speed
US06/454,951 US4515027A (en) 1982-01-29 1982-12-30 Unbalance vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82710002A EP0085271B1 (fr) 1982-01-29 1982-01-29 Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation

Publications (2)

Publication Number Publication Date
EP0085271A1 true EP0085271A1 (fr) 1983-08-10
EP0085271B1 EP0085271B1 (fr) 1984-10-31

Family

ID=8190008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82710002A Expired EP0085271B1 (fr) 1982-01-29 1982-01-29 Excitateur à balourd dèséquilibré avec volants mobiles, réglable en fonction de la vitesse de rotation

Country Status (3)

Country Link
US (1) US4515027A (fr)
EP (1) EP0085271B1 (fr)
DE (1) DE3261088D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639376A1 (fr) * 1988-11-24 1990-05-25 Albaret Travaux Publics Sa Engin compacteur vibrant a amplitude modifiable

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830534A (en) * 1987-10-21 1989-05-16 Hyster Company Dual amplitude vibration generator for compaction apparatus
ATE270403T1 (de) * 1999-10-19 2004-07-15 Magna Steyr Powertrain Ag & Co Ausgleichswelleneinheit für hubkolbenmaschinen
US7588389B1 (en) 2006-12-19 2009-09-15 Humphrey John L Greensroller with variable vibration amplitude
US7786633B2 (en) * 2006-12-27 2010-08-31 Motorola, Inc. Electric motor with a retractable shaft
JP6401649B2 (ja) * 2015-03-31 2018-10-10 酒井重工業株式会社 起振軸
EP3243573B1 (fr) * 2016-05-09 2018-07-18 Eurodrill GmbH Dispositif de production de vibrations

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE529896A (fr) *
US2860783A (en) * 1956-04-23 1958-11-18 Louis W Johnson Vibrating apparatus for handling loose material
DE1285777B (de) * 1967-03-10 1968-12-19 Losenhausen Maschb Ag Unwuchtruettler
FR1601552A (fr) * 1967-10-27 1970-08-31
FR2382950A1 (fr) * 1977-03-10 1978-10-06 Wacker Werke Kg Generateur d'oscillations a balourd

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240649A (en) * 1937-09-15 1941-05-06 Hermes Patentverwertungs Gmbh Driving device for mills
US2673651A (en) * 1950-06-29 1954-03-30 Leland G Plant Hopper car evacuator
FR1593562A (fr) * 1968-08-12 1970-06-01
DE2553800A1 (de) * 1975-11-29 1977-06-02 Koehring Gmbh Bomag Division Unwuchtantriebseinrichtung
US4262549A (en) * 1978-05-10 1981-04-21 Schwellenbach Donald D Variable mechanical vibrator
US4353261A (en) * 1981-02-24 1982-10-12 The Koehring Company Multi-position amplitude device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE529896A (fr) *
US2860783A (en) * 1956-04-23 1958-11-18 Louis W Johnson Vibrating apparatus for handling loose material
DE1285777B (de) * 1967-03-10 1968-12-19 Losenhausen Maschb Ag Unwuchtruettler
FR1601552A (fr) * 1967-10-27 1970-08-31
FR2382950A1 (fr) * 1977-03-10 1978-10-06 Wacker Werke Kg Generateur d'oscillations a balourd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639376A1 (fr) * 1988-11-24 1990-05-25 Albaret Travaux Publics Sa Engin compacteur vibrant a amplitude modifiable

Also Published As

Publication number Publication date
EP0085271B1 (fr) 1984-10-31
US4515027A (en) 1985-05-07
DE3261088D1 (en) 1984-12-06

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