EP1893354A1 - Plaque de vibration a arbres a balourd a position angulaire - Google Patents

Plaque de vibration a arbres a balourd a position angulaire

Info

Publication number
EP1893354A1
EP1893354A1 EP06754536A EP06754536A EP1893354A1 EP 1893354 A1 EP1893354 A1 EP 1893354A1 EP 06754536 A EP06754536 A EP 06754536A EP 06754536 A EP06754536 A EP 06754536A EP 1893354 A1 EP1893354 A1 EP 1893354A1
Authority
EP
European Patent Office
Prior art keywords
imbalance
masses
mass
plate according
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Withdrawn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
EP06754536A
Other languages
German (de)
English (en)
Inventor
Otto W. Stenzel
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.)
Wacker Neuson Produktion GmbH and Co KG
Original Assignee
Wacker Construction Equipment 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 Wacker Construction Equipment AG filed Critical Wacker Construction Equipment AG
Publication of EP1893354A1 publication Critical patent/EP1893354A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses

Definitions

  • the invention relates to a vibrating plate according to the preamble of patent claim 1.
  • Vibration plates for soil compaction consist in principle of a bottom mass having a ground contact plate and a resiliently coupled to the lower mass, a drive (for example, a combustion or electric motor) having the upper mass.
  • the drive drives a belonging to the lower mass, the ground contact plate acting on vibration exciter device.
  • the vibrator induces directional vibration in the ground contact plate.
  • the vibrating ground contact plate acts in the ground to compact it. Furthermore, the resultant total force generated by the vibration exciter device can achieve a propulsion in the longitudinal direction and a steering of the vibrating plate. Since this structure has been known in principle for a long time, a more detailed description is unnecessary.
  • a so-called single-shaft exciter or towing oscillator in which the drive rotatably drives an imbalance shaft carrying an imbalance mass.
  • the imbalance shaft tears at its rotation, the ground contact plate upwards and forwards to achieve a forward movement. Thereafter, the ground contact plate is pressed by the action of the imbalance shaft down and strikes the soil to be compacted.
  • the vibration exciter device has two or three mechanically or positively coupled, parallel to each other unbalance shafts.
  • z. B. EP 0 358 744 Al two-wave exciter two each carrying an imbalance mass unbalanced shafts are positively coupled and arranged in opposite directions rotatable.
  • the phase position of the imbalance shafts relative to one another can be adjusted mechanically by means of a link mechanism or a differential gear. Hydraulic cylinders, Bowden cables or spindles are known as drives for the adjustment.
  • the phase position of the between shafts By adjusting the phase position of the between shafts, the direction of a resulting force vector can be changed, which leads to a change in the propulsive behavior. In particular, a forward and a reverse drive of the vibrating plate can be achieved in this way.
  • the imbalance mass is divided on one of the imbalance shafts into two or more part-imbalance masses which are adjustable relative to one another. If the partial imbalance masses on the imbalance shaft are adjusted asymmetrically with respect to each other, a yawing moment can be generated about the vertical axis of the vibration exciter, whereby the vibration plate can be steered.
  • a symmetrical adjustment in particular if, as in EP 0 358 744 A1, partial imbalance masses are fixedly mounted on the imbalance shaft concerned and other partial imbalance masses are movable relative thereto, the resulting imbalance effect can be adjusted, which results in an adjustment of the resulting Imbalance forces possible.
  • the imbalance shafts in known vibration exciter - devices are arranged parallel to each other. With modern vibration plates, it is thus possible to achieve a forward and a reverse drive and to turn the vibrating plate on the spot or to drive around a curve. In some applications, however, the user desires a transverse movement of the vibrating plate, e.g. B. to drive behind lateral projections. During soil compaction of laterally inclined surfaces, the vibrating plate often drifts down obliquely, requiring the operator to tilt the vibrating plate for compensation. However, the bottom is compacted at the top and bottom edge only by a corner of the ground contact plate, resulting in insufficient compaction results.
  • the invention has for its object to provide a vibrating plate which is movable with three degrees of freedom, ie in the longitudinal direction (main Direction of travel), in the transverse direction and rotating around the vertical axis, with at the same time a minimum number of unbalanced shafts.
  • a vibrating plate according to the invention has an upper mass, which generally comprises a drive, a lower mass, which is elastically coupled to the upper mass and has at least one ground contact plate, and a vibration exciter device acting on the ground contact plate.
  • the vibration exciter device has at least four imbalance masses that can each be driven in rotation about an axis of rotation, wherein the axes of rotation of at least two of the imbalance masses are at an angle to the axes of rotation of the other imbalance masses.
  • the imbalance masses are usually each supported by an imbalance shaft, so that the axis of rotation of an imbalance mass is also the axis of rotation of the imbalance shaft carrying it simultaneously.
  • Angled arrangement of the axes of rotation means an arrangement which is not parallel or coaxial. While hitherto, the axes of rotation of the imbalance masses were usually arranged parallel to each other, an angular arrangement for at least two of the imbalance masses is now proposed according to the invention.
  • the angular arrangement of the axes of rotation on the ground contact plate means that the imbalance masses not only generate force effects in the longitudinal direction (main direction of travel of the vibration plate), but also force components in the transverse direction. With suitable control of the rotation of the imbalance masses, it is thus possible to generate a transverse movement of the vibrating plate. Furthermore, a yaw moment can still be generated around the vertical axis of the vibrating plate in order to steer the vibrating plate.
  • the imbalance masses arranged thereon each generate a centrifugal force vector which rotates in a plane which is perpendicular to the axis of rotation of the imbalance shaft. If the axes of rotation of the imbalance shafts are arranged at an angle to one another on the ground contact plate, the force vectors of the imbalance masses likewise act correspondingly. sen in different levels. Depending on the control of the unbalanced shafts force effects can be generated in different directions, which cause a corresponding movement behavior of the ground contact plate.
  • unbalanced masses can be provided, whose axes of rotation are arranged coaxially or parallel to each other.
  • any hybrid forms of arrangements are conceivable in order to achieve a desired driving, directional and compression behavior of the vibrating plate.
  • imbalance masses with different amounts of mass.
  • Such an embodiment carries z. B. recognizes that the vibration plate is used in the predominant case in forward and reverse drive, while rotations and cornering and oblique movements represent the exception or require less force effects. Accordingly, the imbalance masses, which serve for the forward and reverse drive, should have higher mass amounts than the imbalance masses, which are only intended to effect a curve or cross travel.
  • the lower mass may also be configured such that it has a plurality of ground contact plates, which are acted upon by the vibration exciter device. In this way, the vibrating plate has the opportunity to adapt to a wavy ground.
  • individual floor contact plates can be used for forward movement or steering of the entire vibration plate, while other floor contact plates serve exclusively for soil compaction.
  • the axes of rotation of the imbalance masses are not at an angle of 90 ° to one another, so that the term "angle Hg" amounts to angles between 0 ° and 90 ° or 90 ° and 180 ° (0 ⁇ ⁇ 90 ; 90 ⁇ ⁇ 180). Then, the axes of rotation of the imbalance masses are inclined relative to one another such that at least some of the imbalance masses generate both force components in the forward direction (main direction of travel X) and in the transverse direction.
  • At least a portion of the imbalance masses each have a phase adjusting device assigned to the phase position of the associated Unbalance mass with respect to the phase positions of the other imbalance masses to be able to adjust.
  • the phase positions By adjusting the phase positions, the direction and magnitude of the resulting force vectors can be changed to achieve the desired force effect. This allows the required steerability and transverse mobility of the vibrating plate.
  • one of the imbalance masses is regarded as a reference imbalance mass, which is not assigned its own phase adjusting device, while the other imbalance masses are each assigned their own phase setting device. In this way, the phase angles of these imbalance masses with respect to the reference imbalance mass are individually adjustable.
  • the reference imbalance mass does not require its own phase adjustment device, it can be driven directly by a drive, which minimizes the mechanical outlay.
  • the axes of rotation of the imbalance masses are arranged in a star shape to each other, wherein the angle between the axes of rotation may have the same angular amounts or different angle amounts.
  • At least four imbalance masses or unbalanced shafts carrying them are provided on the lower mass, the phase positions of each other by means of at least three individual Phaseneinstell boots (the reference imbalance mass does not require Phaseneinstell essential) can be adjusted to each other.
  • the axes of rotation of the imbalance masses are arranged such that the force vectors generated by the imbalance masses during their rotation act in different planes. Only then is it possible to kompo ⁇ enten transversely to the longitudinal direction of the vibrating plate to achieve to move the vibrating plate in the transverse direction. At least part of the imbalance masses should have the force vectors generated during their rotation acting in planes which are not parallel to one another but at an angle to one another.
  • those imbalance masses which are adjacent to each other with respect to their centers of gravity, ie in relation to the other unbalanced masses comparatively small distances from one another, driven in opposite directions rotationally driven.
  • the resulting force vector can be adjusted in a conventional manner.
  • imbalance mass is used in a generalized manner and does not assume that the imbalance mass must be formed by a unitary mass element. Rather, an imbalance mass can also be formed by several partial imbalance masses. However, it is a prerequisite that the partial unbalance masses rotate on the same imbalance shaft with the same speed and phase relationship to each other. By contrast, different imbalance masses must be able to be rotated relative to one another in relation to their phase position or to be able to rotate in opposite directions.
  • a plurality of individual exciters are provided, each having at least one of the imbalance masses and an imbalance mass carrying the respective imbalance mass.
  • the individual exciters are individually controllable with regard to the rotational speed and / or the phase position of the imbalance mass.
  • small units are provided in the form of individual exciters, which in the simplest case have only a single imbalance wave.
  • the phase position and possibly the rotational speed of this imbalance shaft can be controlled individually, ie independently of the rotational speed or the phase position of further unbalanced shafts.
  • the entire vibration exciter device then has at least four of these individually controllable individual exciters, wherein at least two of the individual exciters are at an angle to the remaining individual exciters.
  • the phase of the imbalance shaft refers to their relative rotational position in relation to the other, with it cooperating unbalanced shafts.
  • the upper mass preferably has a drive for driving the vibration exciter device.
  • the drive can z. B. supply the hydraulic drive energy for hydraulic motors, each driving one or more unbalanced shafts on the lower mass.
  • each of the individual exciters have an imbalance shaft drivingly driving motor.
  • each of the individual exciters on a hydraulic motor which is arranged by the disposed on the upper mass drive, for. B. an internal combustion engine with hydraulic pump, can be driven.
  • the engine may also be an electric motor.
  • each of the imbalance shafts can be driven individually by the motor assigned to it, while on the other hand the actual position of the imbalance shaft is regularly or constantly monitored via the position transmitter.
  • the position sensor should determine the position of the imbalance shaft (or imbalance mass) at least in one position, ie. H. detect during a revolution of the imbalance shaft once, from which the speed of the imbalance shaft determined and intermediate positions can be interpolated.
  • the position transmitter can also be configured such that it permanently detects the rotational position of the imbalance shaft and thus its speed. The exact detection of the rotational position is important in order to derive the phase position of the unbalance shaft.
  • the individual exciters can be coordinated, so that each individual exciter reaches the setpoint speed and / or nominal phase position which it has specified individually.
  • the central controller evaluates one desired by an operator and / or predetermined by a work or driving program desire to achieve the desired behavior of the ground contact plate.
  • the unbalanced masses each carrying unbalanced shafts are coupled together by a gear and driven by a common drive.
  • the gear allows a positive coupling, so that the relative phase of the individual unbalanced shafts or imbalance masses to each other is always known and can be met.
  • the phase change devices then have to make only the required changes in the phase position with respect to a defined, known output phase position.
  • the imbalance shafts are arranged in a star shape around a center plate with respect to the vertical vertical axis such that intersect the axes of rotation of the imbalance masses with the central axis.
  • the transmission has two on the central axis coaxial superimposed, mutually directed and driven by the drive central bevel gears.
  • Each of the imbalance shafts carrying an imbalance mass is assigned a drive bevel gear which meshes with one of the central bevel gears in order to drive the respective imbalance shaft.
  • a central drive is provided, from which the imbalance shafts, which extend in a star shape away from the central axis, can obtain their drive energy.
  • a transmission can be realized, which distributes the drive energy from a single drive to the various unbalanced shafts.
  • the drive bevel gears meshes with one of the central bevel gears, while the next drive bevel gear seen in the circumferential direction of the central bevel gears with the other central bevel gears Bevel gear meshes.
  • the drive bevel gears should be arranged between the center bevel gears. Due to the change of sides on which the drive bevel gears mesh with the respective associated central bevel gear, it is possible to achieve an opposite, rotationally coupled rotational movement of the imbalance shafts adjacent to one another.
  • only one bevel gear is arranged as a central bevel gear on the vertical central axis.
  • the respective desired direction of rotation change from one shaft to the adjacent shaft is achieved by a reversing gear, which is assigned to each second shaft.
  • Particularly suitable for this planetary gear have proven. With them, the respective direction of rotation can be achieved by blocking the ring gear or the planet carrier carrying the planetary gears. The desired phase adjustment is then possible by rotating the blocked element (ring gear or planet carrier) in a known manner.
  • Fig. 1 in a schematic side view of an inventive
  • Fig. 2 is a plan view of a ground contact plate with a vibration exciter device in a vibration plate according to the invention according to a first embodiment of the invention
  • Fig. 3 is a schematic section through a used in the vibration exciter device of Fig. 2
  • Fig. 4 is a plan view of a ground contact plate with a
  • FIG. 5 is a plan view of a ground contact plate with a
  • Vibration generator according to a third embodiment of the invention.
  • Fig. 7 is a schematic plan view of a ground contact plate in a fourth embodiment of the invention.
  • FIG. 8 shows a section through the plan view of Fig. 7.
  • Fig. 1 shows a schematic side view of a vibrating plate for soil compaction with a lower mass 1 and an upper mass 2.
  • the lower mass 1 is coupled to the upper mass 2 via a spring means 3 elastically movable.
  • the spring device 3 can, for. B. rubber elements, which are mounted between the lower mass 1 and the upper mass 2.
  • the lower mass 1 has a ground contact plate 4, which is in contact with the soil to be compacted and carries a vibration excitation device 5.
  • the vibration exciter device 5 generates vibrations that are introduced into the ground contact plate 4 and on the one hand serve for soil compaction and on the other hand for steering and propulsion of the vibrating plate.
  • a drawbar 6 is mounted for guidance by an operator.
  • the vibrating plate may also be remotely controlled, so that no drawbar 6 is required.
  • Part of the upper mass 2 may also be a drive, for.
  • a drive for.
  • the energy is transmitted mechanically (eg via a belt drive), hydraulically (with the help of a hydraulic pump) or electrically (with the aid of a generator driven by the drive) to the vibration exciter 5, where unbalanced shafts are rotationally driven in a known manner.
  • a mechanical transmission of the drive energy it is sufficient to couple the output side of the belt drive with at least one of the unbalanced shafts, which is connected via transmission with the other unbalanced shafts.
  • a drive motor with a vertical output shaft explained later on with reference to FIGS. 7 and 8 it is possible to mount between the vertical output shaft coming out of the motor and a drive shaft on which at least one central bevel wheel explained later is to provide a compensating coupling. In this way, the central bevel gear can be driven directly by the engine.
  • a hydraulic pressure is generated by means of the hydraulic pump on the upper mass, which sets the respective unbalanced shafts in rotation via one or more hydraulic motors on the lower mass.
  • the electrical energy generated by the generator is transmitted to electric motors, which set the unbalanced shafts coupled with them in rotation.
  • Fig. 2 shows a schematic representation of a plan view of the ground contact plate 4, on which four individual exciters 7 are arranged at an angle to each other and form the vibration exciter device 5.
  • front individual exciter 7 are arranged at an obtuse angle to each other, while the respective successive individual exciters 7 with respect to their axes of rotation 17 form acute angles to each other.
  • FIG. 3 shows a sectional view of the schematic structure of an individual exciter 7.
  • an imbalance shaft 9 is rotatably mounted in a tubular housing 8 .
  • the imbalance shaft 9 carries an imbalance mass 10th
  • the imbalance shaft 9 is driven by a hydraulic motor 1 1 rotating.
  • Hydraulic fluid is supplied to the hydraulic motor 1 1 via a hydraulic line 12 from a hydraulic supply (not shown).
  • the hydraulic supply can be arranged at the vibrating plate substantially on the upper mass 2.
  • Part of the hydraulic supply is z.
  • the hydraulic pump generates a hydraulic pressure in a hydraulic fluid, which can be stored in a hydraulic accumulator.
  • a hydraulic storage tank must be provided for collecting and storing the hydraulic fluid. Due to the strong vibration effect in the lower mass 1, it is expedient for most of the components of the hydraulic supply to be arranged in the upper mass 2, which is decoupled vibrationally by the lower mass 1. As a result, it is only necessary to establish a connection from the hydraulic supply to the hydraulic motor 1 1 with the aid of the hydraulic line 12.
  • Downstream of the hydraulic motor 1 1 serving as an actuator hydraulic valve 13 is arranged, which controls the hydraulic flow to the hydraulic motor 11 and thus affects the speed of the hydraulic motor 11.
  • the hydraulic valve 13 can also be arranged upstream of the hydraulic motor 11.
  • a position sensor 14 On a hydraulic motor 1 1 opposite end of the imbalance shaft 9, a position sensor 14 is arranged.
  • the position sensor 14 - z. B. a rotation angle detecting device - is able to detect the position of the imbalance shaft 9 in at least one position.
  • This can be z. B. optical, magnetic, inductive or capacitive. From the possibility of detecting their position at least once during one revolution of the imbalance shaft 9, the rotational speed and the phase position of the imbalance shaft 9 can be determined. Furthermore, it is readily possible to determine by interpolation over time with sufficient accuracy, the position of the imbalance shaft 9 at any time.
  • the position of the imbalance shaft 9 is important because the unbalanced mass 10 carried by it generates a strong centrifugal force effect during rotation.
  • the centrifugal force of the unbalanced mass 10 interacts with the centrifugal forces of the further individual exciters 7 belonging to the vibration exciter device (FIG. 2) and thus produces a total resulting force effect which determines the movement behavior of the ground contact plate 4 acted upon by the individual exciters 7. Only if both the speed of the unbalanced shafts 9 and their phase positions are precisely coordinated with each other are, the ground contact plate 4 can move in the desired manner.
  • the vibration exciter device has at least four of these individual exciters 7, which are arranged in a suitable manner on the ground contact plate 4. Regarding the possible arrangement forms will be commented later.
  • the individual exciter 7 shown in FIG. 3 furthermore has a regulator 15, which evaluates a signal generated by the position sensor 14 and determines at least the rotational speed and / or the position of the unbalanced mass 10 with respect to a specific point in time (phase position).
  • the controller 15 receives beyond - as will be explained later - a setpoint signal 16, with which the required setpoint speed or target phase position is specified.
  • the controller 15 accordingly controls the hydraulic valve 13 in order to achieve the desired speed and phase position of the imbalance shaft 9 or imbalance mass 10 with the aid of the hydraulic motor 1 1.
  • the axes of rotation 17 of at least two of the unbalanced masses 10 and unbalanced shafts 9 must be at an angle to the axes of rotation 17 of the other unbalanced masses 10.
  • FIG. 2 it can be seen that in each case two individual exciters 7 are arranged such that the axes of rotation 17 of their respective unbalanced masses 10 are arranged parallel to one another and offset axially.
  • An angular arrangement requires that the axes of rotation 17 of two unbalanced shafts 9 are at an angle other than 0 ° or 180 ° to each other. This is the case for two pairs of individual exciters 7 in the embodiment of FIG. 2.
  • the arrangement shown in Fig. 2 is also regarded as "star-shaped", although the axes of rotation 17 of the individual exciter 7 do not intersect at one point.
  • the controller 15 of the individual exciter 7 can be coupled together via a central controller, not shown.
  • the central controller presets the setpoint signals 16 for the individual individual exciters 7.
  • Each regulator 15 then ensures, for the individual exciters 7 associated with it, that the unbalanced shaft 9 behaves in the desired manner.
  • the setpoint signals 16 predetermined by the central control can differ for each of the individual exciters 7.
  • Essential differentiation parameters are setpoint speed, setpoint phase position and setpoint direction of rotation.
  • the change in the direction of rotation is optional and requires additional construction costs in the realization of the hydraulic motor 1 1 and the hydraulic valve 13. Normally, a change in the direction of rotation will not be required.
  • an individual exciter may be provided which has no individually assigned controller 15. Then the signals of the position sender 14 of the various individual exciters 7 are fed to a central controller (not shown), which evaluates all signals from all individual exciters 7. The central controller then controls individually corresponding to each of the hydraulic valves 13 to individually achieve the desired behavior of the imbalance shaft 9 for each of the individual exciter 7.
  • the central controller or the central controller contain suitable working or driving programs with which the operator by means of control elements (remote control, operating lever, buttons) given wishes for the driving and vibration behavior of the vibrating plate can be converted into control specifications for the individual exciters. Wishes the operator z.
  • the central controller or the central controller causes an adjustment of the phase position in at least one of the individual exciter 7, whereby the resulting total force changes its direction of action.
  • Six individual exciters 7 are arranged in a star shape around a central axis (vertical axis) in such a way that the axes of rotation 17 of the individual unbalanced shafts intersect at a point 18 ,
  • further individual exciters 19 are arranged on the ground contact plate 4, which in each case generate force effects in the main direction of travel X or in the opposite direction with their imbalance shafts in order to support the travel movement of the vibration plate.
  • the star-shaped individual excitation 7 it is possible to steer the vibrating plate by generating a yawing moment about the vertical axis passing through the point 18 or to move in a direction transverse or oblique to the main direction of travel X. With appropriate control, it is thus possible to move the vibrating plate in any direction with any orientation on the ground.
  • Fig. 5 shows another embodiment of the invention, in which the individual exciters 7 are arranged on the ground contact plate 4, that the axes of rotation 17 of the respective unbalanced shafts are parallel, perpendicular or at an angle to the main direction of travel X.
  • similar driving characteristics as in the vibration plate shown in FIG. 4 can be achieved.
  • the person skilled in almost any options are available because he is not bound by the hydraulically driven and individually controllable individual exciter 7 to a mechanical coupling. Rather, he can arbitrarily arrange each a complete unit representing individual exciter 7 on the ground contact plate 4.
  • the control in the form of the central control or the central controller is then to be programmed in a suitable manner to take into account the arrangement of the individual exciters 7 and 19, respectively.
  • Fig. 6 shows a schematic plan view of further possibilities of the arrangement of the individual exciter 7 on the ground contact plate 4.
  • the individual exciters 7 are shown only as lines that coincide with the axes of rotation of unbalanced shafts or imbalance masses.
  • the reinforced individual exciters 20 can be used primarily to achieve an increased compression effect or a more rapid forward and reverse travel.
  • the normal individual exciters 7 or the individual exciters with lower imbalance masses are provided for the steering of the vibration plate.
  • unbalanced shafts with increased imbalance masses can be replaced by "normal" individual exciter 7, if z. B.
  • several individual exciters 7 are arranged one behind the other parallel to each other.
  • five individual exciters are arranged on the ground contact plate 4, namely four "normal" individual exciters 7 and one amplified individual exciter 20 whose unbalanced mass corresponds to twice the mass of an unbalanced mass of a single exciter 7.
  • the individual exciters 7, 20, whose axis of rotation are perpendicular to the main direction of travel X, are responsible for the propulsion and the reverse drive of the vibrating plate, while the two individual exciters 7, whose axis of rotation extends in the direction of travel X, cause a transverse movement or steering of the vibrating plate ,
  • Fig. 7 shows, similar to Fig. 2, a schematic plan view of the ground contact plate 4, are placed on the four individual exciters 7 in a star-shaped arrangement.
  • the individual exciters 7 are not hydraulically driven, but are mechanically coupled to one another in a positive-locking manner via a gear 21.
  • Fig. 8 shows a sectional view of the vibrating plate of Fig. 7 along the section line A-B.
  • a vertical central axis 22 about which a drive shaft 23 rotates.
  • a drive shaft 23 On the drive shaft 23 are two coaxially stacked, zueinan- the directed central bevel gears, namely an upper central bevel gear 24 and a lower central bevel gear 25 are mounted.
  • the drive shaft 23 with the two central bevel gears 24, 25 are driven by an overlying hydraulic motor 26, the pressurized hydraulic fluid is supplied from the located on the upper mass 2 drive.
  • an internal combustion engine may be provided, whose preferably vertical output shaft is coupled directly to the drive shaft 23 via an elastic coupling. In this way, it is possible that the motor drives the drive shaft 23 with the central bevel gears 24, 25 without the interposition of a transmission or a hydraulic system.
  • the imbalance shafts 9 of the individual drives 7 have at their end facing the housing 21 in each case a drive bevel gear 27.
  • the individual drives 7 can be alternately slightly increased with their unbalanced shafts 9 about the circumference of the central axis 22 and slightly lowered (each offset by the module of the toothing) on the ground contact plate 4, so that the drive bevel gears alternately with the upper central cone - Rad 24 and the lower central bevel gear 25 comb.
  • the imbalance shafts 9, which are each viewed on the circumference rotate in opposite directions.
  • phase position of the imbalance masses 10 of the remaining individual exciters 7 with respect to the phase position of the drive shaft 23 and thus with respect to the reference imbalance mass 28 by means of the respective Phaseneinstell be changed.
  • Each of the remaining individual exciters 7 thus has a phase adjustment device assigned to it individually.
  • phase adjustment z. B swirl sleeves, as known from the prior art (eg., EP 0 358 744 Al).
  • phase position of the imbalance shaft or unbalanced mass in question can be adjusted individually with respect to the phase position of the central drive shaft 23.
  • the phase adjustment can z. B. have an actuator 29, via the mechanical, electrical or hydraulic a change in the phase position of the imbalance mass inside the respective individual exciter 7 is made.
  • a phase adjusting device via the interposition of a planetary gear and targeted blocking or rotation of blocked elements (ring gear, planet carrier).
  • the coordination of the Phaseneinstell Steinen can be performed manually by the operator, but also by a central controller or a central controller already described above.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Architecture (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Plaque de vibration pour le compactage du sol, qui possède une masse supérieure (2), une masse inférieure (1) élastiquement couplée à la masse supérieure (2) et comportant au moins un plaque de contact (4) avec le sol et un dispositif de production de vibrations (5, 7) agissant sur la plaque de contact (4) avec le sol. Le dispositif de production de vibrations (5) comporte au moins quatre balourds (10) pouvant chacun être entraînés en rotation autour d'un axe de rotation (17), l'axe de rotation (17) d'au moins deux des balourds (10) présentant une position angulaire par rapport aux axes de rotation (17) des autres balourds. L'un (28) des balourds représente un balourd de référence qui ne nécessite pas de dispositif d'ajustement de phase propre. Par contre, chaque autre balourd (10) est associé à un dispositif d'ajustement de phase propre, de manière telle que la position de phase de ces balourds (10) peut être ajustée individuellement par rapport au balourd de référence (28).
EP06754536A 2005-06-24 2006-06-23 Plaque de vibration a arbres a balourd a position angulaire Withdrawn EP1893354A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029433A DE102005029433A1 (de) 2005-06-24 2005-06-24 Vibrationsplatte mit winklig angeordneten Unwuchtwellen
PCT/EP2006/006087 WO2006136446A1 (fr) 2005-06-24 2006-06-23 Plaque de vibration a arbres a balourd a position angulaire

Publications (1)

Publication Number Publication Date
EP1893354A1 true EP1893354A1 (fr) 2008-03-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754536A Withdrawn EP1893354A1 (fr) 2005-06-24 2006-06-23 Plaque de vibration a arbres a balourd a position angulaire

Country Status (6)

Country Link
US (1) US8721218B2 (fr)
EP (1) EP1893354A1 (fr)
JP (1) JP2008546933A (fr)
CN (1) CN101203331B (fr)
DE (1) DE102005029433A1 (fr)
WO (1) WO2006136446A1 (fr)

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CN103033330B (zh) * 2012-12-20 2016-02-24 苏州苏试试验仪器股份有限公司 用于高加速寿命试验和应力筛选设备的工作台面
DE102013021494B4 (de) 2012-12-28 2023-11-30 Bomag Gmbh Vibrationsplatte mit einem Schwingungserreger
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Also Published As

Publication number Publication date
JP2008546933A (ja) 2008-12-25
DE102005029433A1 (de) 2006-12-28
CN101203331A (zh) 2008-06-18
CN101203331B (zh) 2011-12-07
US20100199774A1 (en) 2010-08-12
US8721218B2 (en) 2014-05-13
WO2006136446A1 (fr) 2006-12-28

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