EP2363212A2 - Accélérateur d'oscillations réglable en continu - Google Patents

Accélérateur d'oscillations réglable en continu Download PDF

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Publication number
EP2363212A2
EP2363212A2 EP11000185A EP11000185A EP2363212A2 EP 2363212 A2 EP2363212 A2 EP 2363212A2 EP 11000185 A EP11000185 A EP 11000185A EP 11000185 A EP11000185 A EP 11000185A EP 2363212 A2 EP2363212 A2 EP 2363212A2
Authority
EP
European Patent Office
Prior art keywords
imbalance
vibration
shaft
transmission
coupling
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
EP11000185A
Other languages
German (de)
English (en)
Other versions
EP2363212A3 (fr
EP2363212B1 (fr
Inventor
Jens Wagner
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.)
Bomag GmbH and Co OHG
Original Assignee
Bomag GmbH and Co OHG
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 Bomag GmbH and Co OHG filed Critical Bomag GmbH and Co OHG
Publication of EP2363212A2 publication Critical patent/EP2363212A2/fr
Publication of EP2363212A3 publication Critical patent/EP2363212A3/fr
Application granted granted Critical
Publication of EP2363212B1 publication Critical patent/EP2363212B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the invention relates according to the preamble of claim 1 a vibration exciter with a shaft and at least two arranged on the shaft imbalance weights, in which the radial distance of the common center of gravity of the imbalance weights of the axis of rotation of the shaft is infinitely adjustable by means of a transmission.
  • a pin is used for the purpose of adjusting the phase position of the imbalances, which engages in a helically extending groove of a hub.
  • a translational movement of the pin causes a rotational movement of the hub, so that a mutual rotation of the imbalances is made possible.
  • high adjusting forces must be applied.
  • the disadvantage is that a complex coupling between the imbalances must be provided. This not only leads to higher costs, but also to greater space requirements.
  • a reciprocating vibrator in which the excitation force can be adjusted continuously during operation.
  • a running as a flat push rocker, planar coupling gear is used.
  • a displacement of the push rod leads to a swinging movement of the coupling and the rocker, so that the center of gravity distance of the unbalance weights can be varied to the axis of rotation of the unbalanced shaft.
  • the vibration exciter principle inherent, since a swinging of the imbalance weights in the radial direction is required to increase the excitation force, a relatively large installation space in both the axial and radial direction of the unbalanced shaft claimed.
  • the invention is therefore based on the object to provide a vibration generator of the type mentioned, which overcomes the disadvantages of the known vibration exciter of the prior art.
  • the vibration exciter according to the invention has a transmission, which is a spatial coupling mechanism, for example, a spatial thrust transmission, is.
  • Coupling gearboxes have at least four gear members, which by sliding joints, d.
  • H. Joints such as push and pivot joints whose elements slide on each other or touch each other in surfaces are connected.
  • All coupling gears have at least one fixed coupling, which represents a not stored in the frame or guided transmission link.
  • the coupling or coupling members may be designed as connecting rods, drive rods, etc.
  • coupling gears allow easier and cheaper manufacture of the gear members.
  • coupling gears are considered to be more robust thanks to the higher load capacity of the sliding joints.
  • Level coupling gears are characterized in that the limbs of all members perform a planar movement, d. H. only tracks in a plane or parallel planes. To distinguish this are “spherical coupling mechanism", all of whose limbs can only pass through tracks on concentric spherical surfaces.
  • the transmission for adjusting the center of gravity of the imbalance weights is a spatial coupling mechanism.
  • at least one member to at least one other member can perform a spatial movement.
  • a spatial movement is understood to mean a movement in which at least one point of a body passes through a spatial path that is no longer in a plane.
  • the vibration exciter according to the invention With the aid of the vibration exciter according to the invention a stepless adjustment of the amplitude of the vibration or the excitation force during operation is possible in a simple and cost-effective manner. Thanks to the transmission kinematics according to the invention, the required adjustment forces are very low. In addition, the vibration exciter according to the invention can be built to save space.
  • the transmission comprises a variable slide and coupling members, each coupling member is connected by means of pivot connections with the adjusting slide and one of the imbalance weights.
  • the transmission according to the invention is a spatial coupling mechanism with a frame, a drive member designed as an adjusting slide, two coupling members and two output members, which are preferably connected to the imbalance weights or the imbalance weights themselves. It is therefore a parallel transmission with two four-link coupling gears.
  • Joint freedom degree is understood as the degree of freedom that a joint attaches to a member in relation to the other member connected to it by the joint. Since these are swivel joints, each swivel joint allows two rotational movements about two different axes of rotation.
  • the pivot joints each comprise a rotatably mounted clevis.
  • the first axis of rotation is located as in conventional fork joints in the pin axis, which runs through the cheeks of the clevis. Due to the rotatable mounting of the fork head, a second axis of rotation is formed as a Vertical axis of the fork head perpendicular to the first axis of rotation and runs centrally between the cheeks of the clevis.
  • the shaft has coaxial partial waves, which each have a rotationally and axially fixedly connected imbalance weight, wherein the partial waves are arranged adjacent to each other via rotational sliding surfaces.
  • the total weight of the vibrator can be reduced because the shaft need not be continuous.
  • the production of the exciter can be simplified by the coupling of the imbalance weights to the respective partial waves in a simple manner, for example by means of a casting process.
  • the two imbalance weights which are arranged adjacent to one another via rotational sliding surfaces, are coupled to one another and mounted in a common frame such that a single adjusting drive is sufficient to rotate the two imbalance weights relative to one another.
  • the two imbalance weights are arranged mirror-inverted with respect to the center of the wave. However, they are the same in shape and size, allowing easy manufacturing.
  • the imbalance weights extend axially substantially over the entire length of the shaft. This creates an extremely compact vibration exciter.
  • the invention further relates to a directional vibrator for generating a directional vibration with at least two vibration exciters according to the invention, wherein the phase between the waves of the vibration exciter is continuously displaceable.
  • a directional oscillator is created from two individual rotating orbiting agents, which can produce a directional vibration on a particular axis due to the superposition of individual vibrations.
  • devices for soil compaction for example, predominantly vertically directed vibrations are generated.
  • the phase between the individual vibration exciters is infinitely displaceable in the directional vibrator according to the invention.
  • the phase is understood to mean firstly the position of the exciter or imbalance shaft with respect to a freely determinable reference position and, secondly, the size ratio of the imbalances to one another.
  • Run the two unbalanced shafts in-phase ie they are around the respective axis of rotation rotating center of gravity vectors of the unbalanced shafts arranged in at least two positions parallel to each other and the imbalances of the two unbalanced shafts are the same size, then only forces are generated in the vertical direction.
  • the axis of the directed oscillation tilts at a certain angle with respect to the imbalance vertical. This may be advantageous, for example, to generate and adapt a propulsion of the directional vibrator in addition to the compaction of the soil.
  • the invention relates to a vibrating plate or roller with a directional vibrator with two vibrators according to the invention.
  • the vibrating plate or roller can thus be easily and inexpensively manufactured and adjusted with only small adjustment forces during operation. Not only the amplitude of the directed vibration, but also the inclination of the oscillation axis relative to the vertical can be adjusted continuously, so that depending on the application, the size of the imbalance and the speed and direction of the vibrating plate or roller can be adjusted.
  • FIG. 1 shows a kinematic scheme of the spatial coupling transmission according to the invention.
  • the transmission can be broken down into two four-membered transmissions, namely a first four-member with a frame 1, a drive member 2, a first coupling 3a and a first output member 4a and a second four-member with a frame 1, a drive member 2, a second coupling 3b and a second output member 4b.
  • the coupling 3a, 4a are connected via the joints g 2,3a and g 2,3b to the drive member 2 and the joints g 3a, 4a and g 3b, 4b with the output members 4a, 4b.
  • a translational movement of the drive member 2 along the axis Ax according to arrow T is converted into a swinging movement of the output members 4a, 4b about the axis Ax according to arrow R, wherein the directions of rotation of the output members 4a, 4b are opposite to each other.
  • the coupling 3a, 3b perform in the adjustment of each a spatial movement.
  • FIG. 2a shows a front view of an embodiment of the vibration exciter according to the invention in a position in which the partial imbalances generated by the imbalance weights 20, 30 cancel each other, so that the total imbalance is minimal, that is substantially zero.
  • the center of gravity S which is formed on the one hand from the partial center of gravity S1 of the first imbalance weight 20 and on the other from the partial center of gravity S2 of the second imbalance weight 30, lies in this position on the horizontal H, so that there is no radial distance to the axis of rotation Ax. Thus, no appreciable imbalance occurs.
  • FIG. 2b shows the front view of the vibration exciter Fig. 2a in a position in which the oscillation amplitude or the total imbalance is maximum.
  • the imbalance weights 20, 30 and thus also their centers of gravity S1, S2 are rotated along the arrow directions shown to each other, so that the center of gravity S now has a significant distance from the horizontal H or the axis of rotation Ax.
  • the distance of the center of gravity S from the axis of rotation can be between the in Fig. 2a shown, minimum value 0 and the in Fig. 2b shown, maximum value can be adjusted continuously.
  • FIG. 3 shows a perspective view of the vibrator 10 according to the invention for a better overview, in this case the housing is not shown.
  • the vibration exciter essentially comprises the gear 11, which in turn comprises an adjusting slide 12, the two coupling links 13, 14, the imbalance weights 20, 30 and the four pivot joints 15.
  • the exciter housing not shown here corresponds to the in Fig. 1 shown frame 1.
  • the adjusting slide 12 corresponds to the drive member 2 from Fig. 1
  • the coupling links 13, 14 represent the coupling 3a, 3b Fig. 1
  • the imbalance weights 20, 30 correspond to the output members 4a, 4b Fig.
  • the four hinge joints 15 make the joints g 2,3a , g 2,3b , g 3a, 4ab g 3b, 4b Fig. 1
  • the shaft 18 of the vibration generator 10 is firstly composed of a first hollow-bored partial shaft 21, which carries the first imbalance weight 20, and on the other hand from a second hollow-drilled partial shaft 31, which carries the second imbalance weight 30. In the position shown, no unbalance is generated ( Fig. 2a ).
  • FIG. 4 shows a perspective view of the vibration exciter 10 Fig. 3 , but in a position where the generated imbalance is maximum ( Fig. 2b ).
  • the adjusting slide 12 is pushed in the direction of the imbalance weights 20, 30.
  • the articulated with the adjusting slide, rigid coupling members 13, 14 each perform a spatial movement, whereby the articulated weights also associated with them unbalanced weights 20, 30 together with the partial shafts 21, 31 perform a rotational movement about the axis of rotation Ax.
  • the vibration exciter caused by the gear 11 rotational movements of the imbalance weights 20, 30 of the excitation drive or vibration drive (not shown) caused rotational movement of the imbalance weights 20, 30 are superimposed.
  • FIGS. 5a, 5b the plan views of the vibrator 10 are shown before and after the adjustment.
  • one end of the adjusting slide 12 is at position X1.
  • FIG. 5b shown is the addressed end of the adjusting slide 12 via a hydraulic cylinder or a linear motor (both not shown) for the purpose of adjusting the unbalance by the amount X placed in the position X2.
  • the imbalance weights 20, 30 are rotated about the axis of rotation Ax to each other, so that in the plan view, a distance Y2, which is smaller than the distance Y1 from Fig. 5a . is recognizable. Any position of the adjusting slide 12 between X1 and X2 is infinitely adjustable.
  • FIG. 6 shows a part of the transmission 11 from Fig. 3 ,
  • the adjusting slide 12 essentially comprises a cylindrical part, which is guided in the bore of the partial shaft 31.
  • a shaft shoulder can be seen, which serves to receive a Wälziagerung (not shown).
  • the rigid coupling members 13, 14, which in each case again by means of hinge joints 15 with the imbalance weights 20, 30 (not shown here) are connected.
  • FIGS. 7 and 8 are the imbalance weights 20, 30 off Fig. 3 shown in detail.
  • the partial waves 21, 31 produced integrally with the imbalance weights 20, 30 are also clearly visible.
  • the imbalance weights 20, 30 are identical in construction.
  • the one end (with the larger bore) of the second imbalance weight 30 on the outer circumferential surface of the partial shaft 21 of the first imbalance weight 20 can rotate rotationally.
  • the one end of the first imbalance weight together with the part shaft 31 of the second imbalance weight also forms a rotary sliding surface.
  • the axial extent of the imbalance weights 20, 30 substantially corresponds to the axial extent of the shaft 18 with the partial shafts 21, 31.
  • FIG. 9 is a directional vibrator 50 with two vibrators according to the invention including excitation housing 19 and cover 17 is shown.
  • the directional vibrator 50 is off Fig. 9 shown, but without cover 17 and exciter housing 19.
  • the directional vibrator 50 includes two juxtaposed vibration exciters 10, 40, which means (not shown) for synchronously opposing rotation of the unbalanced shafts have.
  • a main adjusting cylinder 41 with an adjusting piston 42. That with the adjusting piston 42 connected connecting member 44 provides for a synchronous adjustment of the adjusting slide of the vibration exciter 10, 40.
  • the auxiliary cylinder 43 is provided to make a phase adjustment of the imbalance shaft of the vibration exciter 40 relative to the imbalance shaft of the vibration exciter 10.
  • the unbalance shafts of the vibration exciter 10, 40 in the same phase with maximum imbalance.
  • the excitation force generated by the directional oscillator 50 is directed vertically upwards or downwards.
  • FIG. 11 shows the directional oscillator 50 Fig. 10 , but with a phase shift.
  • the phase of the shaft of the first vibration exciter 10 relative to the shaft of the second vibration exciter 40 is displaced by the fact that the imbalance of the first vibration exciter 10 due to an adjusting movement has an eccentricity e1, which - as also schematically in Fig. 11
  • the eccentricity e2 of the imbalance of the second vibration exciter 40 is Unbalance of the first vibration exciter 10 is smaller than the imbalance of the second vibration exciter 40.
  • a directional vibration is generated whose axis A is not vertical, ie perpendicular to the horizontal H, but by a certain angle, For example, 15 °, is inclined relative to the vertical axis V, as well as in FIG. 12 good to see.
  • This may expediently be used for setting an independent forward or backward movement of a vibration plate, which comprises a directional vibrator 50 according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP11000185.6A 2010-03-03 2011-01-12 Générateur des vibrations réglable en continu Active EP2363212B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010010037.4A DE102010010037B4 (de) 2010-03-03 2010-03-03 Stufenlos verstellbarer Schwingungserreger

Publications (3)

Publication Number Publication Date
EP2363212A2 true EP2363212A2 (fr) 2011-09-07
EP2363212A3 EP2363212A3 (fr) 2016-11-09
EP2363212B1 EP2363212B1 (fr) 2019-10-02

Family

ID=44148895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11000185.6A Active EP2363212B1 (fr) 2010-03-03 2011-01-12 Générateur des vibrations réglable en continu

Country Status (4)

Country Link
US (1) US8881612B2 (fr)
EP (1) EP2363212B1 (fr)
CN (1) CN102189075B (fr)
DE (1) DE102010010037B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011112316B4 (de) * 2011-09-02 2020-06-10 Bomag Gmbh Schwingungserreger zur Erzeugung einer gerichteten Erregerschwingung
WO2013186739A2 (fr) * 2012-06-13 2013-12-19 Ozkan Aydin Dispositif de changement de position ayant un moment variable
DE102012025376A1 (de) 2012-12-27 2014-07-03 Wacker Neuson Produktion GmbH & Co. KG Schwingungserreger für lenkbare bodenverdichtungsvorrichtungen
US9039531B2 (en) * 2013-02-05 2015-05-26 Microsoft Technology Licensing, Llc Rumble motor movement detection
US9941779B2 (en) * 2015-05-08 2018-04-10 Dynamic Structures And Materials, Llc Linear or rotary actuator using electromagnetic driven hammer as prime mover

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE2409417A1 (de) 1974-02-27 1975-09-04 Wacker Werke Kg Schwingungserreger mit zwei relativ zueinander in der phasenlage kontinuierlich verstellbaren unwuchten
DD265113A1 (de) 1987-09-15 1989-02-22 Erfurt Wohnungsbau Gegenlaufvibrator mit waehrend des betriebes vornehmbarer kontinuierlicher erregerkrafteinstellung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2409417A1 (de) 1974-02-27 1975-09-04 Wacker Werke Kg Schwingungserreger mit zwei relativ zueinander in der phasenlage kontinuierlich verstellbaren unwuchten
DD265113A1 (de) 1987-09-15 1989-02-22 Erfurt Wohnungsbau Gegenlaufvibrator mit waehrend des betriebes vornehmbarer kontinuierlicher erregerkrafteinstellung

Also Published As

Publication number Publication date
US20120055276A1 (en) 2012-03-08
EP2363212A3 (fr) 2016-11-09
US8881612B2 (en) 2014-11-11
CN102189075A (zh) 2011-09-21
EP2363212B1 (fr) 2019-10-02
CN102189075B (zh) 2014-10-22
DE102010010037B4 (de) 2019-10-31
DE102010010037A1 (de) 2011-09-08

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