EP0999020A2 - Umwuchtrüttler für Steinformmaschinen - Google Patents
Umwuchtrüttler für Steinformmaschinen Download PDFInfo
- Publication number
- EP0999020A2 EP0999020A2 EP99121397A EP99121397A EP0999020A2 EP 0999020 A2 EP0999020 A2 EP 0999020A2 EP 99121397 A EP99121397 A EP 99121397A EP 99121397 A EP99121397 A EP 99121397A EP 0999020 A2 EP0999020 A2 EP 0999020A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- motors
- unbalance
- shafts
- vibrating table
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
-
- 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
Definitions
- the invention relates to an unbalance shaker for compacting concrete elements, especially of paving stones during their manufacture for Installation in a stone molding machine.
- Such an unbalance shaker usually has a vibrating table on which unbalanced shafts are arranged which are driven by at least one motor, one device is provided for controlling and / or regulating the speed or relative phase position of the unbalanced shafts.
- Such a device is known for example from DE-U-297 12 242.
- the object of the present invention is accordingly to provide a corresponding To further develop unbalance vibrators in such a way that none of them Residual vibrations occur more.
- the invention has the advantage that it uses the conventional cardan shafts with which the unbalanced shafts were previously driven by motors were decoupled from the vibrating table firmly on the bed of a stone molding machine were appropriate. Their bearings are also eliminated. By the The vibration device is eliminated from these mechanical components cheaper and less maintenance. Also required the cardan shafts as well the bearings themselves part of the drive power, so that by their Eliminating the power consumption of the motors is reduced because there are no unnecessary ones Mechanics must be moved. With the cardan shafts mentioned a slight non-uniformity occurs due to the gimbal error between the input and output of such a shaft, which are now bypassed becomes.
- the motors with the unbalanced shafts are provided in pairs on the vibrating table. Each pair can be arranged essentially symmetrically to the center of the vibrating table, it then lies essentially in a horizontal plane.
- each pair of motors essentially in one Vertical plane is arranged.
- the symmetrically arranged pairs both all can lie in one plane, as well as independently of the other pairs can be arranged in its own horizontal or vertical plane.
- the unbalanced shafts are the rotor shafts of the motor, and on both ends protrude from the motors, where they each are provided with a rectified unbalance weight. This is external unbalance shafts are no longer necessary, but by eliminating them and the elimination of their bearings, in turn, the power consumption the motors are reduced and the regulation can be carried out more quickly.
- the motors are equipped with a rotor position detection for fast control of the imbalance, which immediately delivers their results to the control.
- This rotor position detection can be, for example Sine-cosine encoder act that have a significantly higher resolution than conventional incremental encoders. For correspondingly demanding control tasks you get such Sine-cosine encoder with resolutions of over 65,000 increments per revolution. This means that even the smallest control deviations can be detected and immediately compensated for due to the good dynamics of the proposed unbalance shaker.
- resolver which is mounted on a shaft end and a voltage dependent on the rotational position with the rotation of the Wave generated sinusoidal shape, can be used with it It is also essential here that the electronics of the controller is able to Evaluation of a resolution of 65,000 increments per revolution and more.
- the motors are speed and power controlled via frequency converters, which are also designed as position controllers.
- a phase angle of 180 ° between the unbalances can be adjusted both motor pairs can be reached by + 90 ° or - 90 °.
- the frequency converters are coupled with each other that angular deviations between the motors due to signal propagation times be avoided.
- the leading axis gives its position information directly to the master drive assigned synchronously in a first pair running motor further.
- the master drive also indicates its position one of the other engines that are related to him from the angle information additionally transmitted to the control is tracked synchronously becomes. This tracked motor provides its position information again to the associated synchronously running motor in it second pair further.
- each motor is a slave drive designed and a virtual master drive is used, the speed setpoint from the higher-level controller.
- the virtual one Master drive gives the speed of rotation and rotor position to everyone Slave drives continue. This further improves the control properties and also the interchangeability of the electronic controllers.
- these unbalanced shafts have unbalanced weights each provided in pairs, namely in an outer pair, consisting of unbalanced shafts 2 and 5 or an inner pair from unbalanced shafts 3 and 4. These unbalanced shafts run in pairs each with the same speed by in opposite Directions according to arrows 10. This creates each pair Unbalance shafts 3, 4 and 2, 5 in total only one vibration component in Vertical direction, since each pair revolves in phase synchronization.
- FIG. 2 shows the bottom view of the vibrating table 1.
- the unbalanced shafts 2 to 5 are the rotor shafts of motors 12 to 15 and that the unbalance shafts 2 to 5 at both ends protrude from these motors 12 to 15.
- both ends of the unbalance shafts 2 to 5 rectified unbalance weights 6 to 9 are provided so that each individual motor is also symmetrical is with respect to the second central plane running transverse to the central plane 11 16 of the vibrating table 1. This ensures that also with respect to this There is a symmetrical force attack in the median plane and thus the resulting one Vibration force than at the intersection 17 of the two middle planes 11 and 16 can be assaulted.
- the motors 12 to 15 themselves have a rotor position detection and are in particular provided with resolvers, not shown, through which these Detection can be done very precisely.
- the motor 12 acts as Master drive, while motors 13, 14 and 15 are designed as slave drives are.
- the motor 15 always runs in opposite directions synchronously with the motor 12 while motors 13 and 14 are regulated as needed to achieve the to increase or decrease the resulting vibrating force.
- the engines 13, 14 each run in opposite directions synchronously.
- All motors are electrical asynchronous machines that may also be operated in normal operation on the normal power grid can. It is essential that the motors are only electronic Components are connected to each other, while no mechanical, components causing additional weight are present.
- the engines 12, 13, 14, 15 are frequency converters for their speed and power control 18, 19, 20 and 21 upstream which take the energy out of the normal Take out power supply 22.
- the frequency converter 18 from one superordinate controller 23 a speed setpoint 24 predetermined.
- the resulting rotation speed and position becomes from the frequency converter 18 to be assigned to the master drive 12 Frequency converter 19 and 21 passed on communication lines 25.
- the frequency converter 21 ensures that the motor 15 with the same speed but in opposite synchronism with the master motor 12 circulates.
- the frequency converter 19 receives an angle setpoint 26 via the higher-level controller 23, from which the motor 13 results in a phase difference to the master drive 12.
- the frequency converter 19 gives its rotational speed and rotational position via the Connection line 27 to the frequency converter 20 through which the Motor 14 is operated in synchronism with the motor 13.
- FIG. 4 An alternative electronic connection is shown in FIG. 4.
- the motors 12, 13, 14, 15 are again for their speed and power control Frequency converter 18, 19, 20 and 21 upstream, which the Take energy from the normal power grid 22.
- a speed setpoint 24 a virtual one Master drive 28 specified.
- the resulting rotation speed and position becomes from this virtual master drive 28 to the assigned frequency converters 18, 19, 20 and 21 passed on communication lines 25, the thus act as a slave drive to the virtual master drive 28.
- the virtual master drive 28, which is a correspondingly programmed, an engine simulating control element is now the Motors 12, 13, 14 and 15 via frequency converters 18, 19, 20 and 21 Rotation speed and rotor position.
- the frequency converter 20 and 21 ensure that motors 14 and 15 are the same Speed, however, in opposite synch with motors 12 and 13 circulate.
- the frequency converters 19 and 20 are still on Angle setpoint 26 predetermined by the higher-level controller 23 which is the phase difference for the motors 13 and 14 to the motors 12 or 15 results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Road Paving Machines (AREA)
- Control Of Multiple Motors (AREA)
Abstract
Description
- Figur 1
- die schematische Seitenansicht eines Unwuchtrüttlers;
- Figur 2
- die schematische Unteransicht eines Unwuchtrüttlers.
- Figur 3
- die schematische Verschaltung der Motoren eines Unwuchtrüttlers.
- Figur 4
- die schematische Verschaltung der Motoren eines Unwuchtrüttlers gemäß einer weiteren Ausführungsform.
Claims (7)
- Unwuchtrüttler zur Verdichtung von Betonelementen, insbesondere von Pflastersteinen, während ihrer Fertigung, mit einem Rütteltisch (1), mit an dem Rütteltisch (1) angeordneten Unwuchtwellen (2, 3, 4, 5), mit den Unwuchtwellen (2, 3, 4, 5) zugeordneten Motoren (12, 13, 14, 15) zum Antrieb der Unwuchtwellen (2, 3, 4, 5) und mit einer Vorrichtung zur Steuerung und/oder Regelung der Drehzahl oder der relativen Phasenlage der Unwuchtwellen (2, 3, 4, 5),
dadurch gekennzeichnet,
daß die Unwuchtwellen (2, 3, 4, 5) die Rotorwellen der Motoren (12, 13, 14, 15) sind und daß die Motoren (12, 13, 14, 15) an dem Rütteltisch (1) montiert sind. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Motoren (12, 15; 13, 14) mit den Unwuchtwellen (2, 5; 3, 4) jeweils paarig an dem Rütteltisch (1) vorgesehen sind und jedes Paar im wesentlichen symmetrisch zur Mitte (17) des Rütteltisches (1) angeordnet ist. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Unwuchtwellen (2, 3, 4, 5) an ihren beiden Enden aus den Motoren (12, 13, 14, 15) herausragen und dort jeweils ein gleichgerichtetes Unwuchtgewicht (6, 7, 8, 9) tragen. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Motoren (12, 13, 14, 15) eine Rotorlageerfassung aufweisen. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß ein Motor (12) der Leitantrieb ist und die übrigen Motoren (13, 14, 15) als Folgeantriebe ausgelegt sind. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß ein virtueller Leitantrieb (28) vorgesehen ist und die Motoren (12, 13, 14, 15) als Folgeantriebe ausgelegt sind. - Unwuchtrüttler gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Motoren (12, 13, 14, 15) elektrische Asynchronmaschinen sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19850351 | 1998-11-02 | ||
DE1998150351 DE19850351A1 (de) | 1998-11-02 | 1998-11-02 | Unwuchtrüttler für Steinformmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0999020A2 true EP0999020A2 (de) | 2000-05-10 |
EP0999020A3 EP0999020A3 (de) | 2002-05-29 |
Family
ID=7886344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99121397A Withdrawn EP0999020A3 (de) | 1998-11-02 | 1999-10-27 | Umwuchtrüttler für Steinformmaschinen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0999020A3 (de) |
CA (1) | CA2287851A1 (de) |
DE (1) | DE19850351A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002038289A1 (de) * | 2000-11-12 | 2002-05-16 | GEDIB Ingenieurbüro und Innovationsberatung GmbH | Vorrichtung zur modulation der erregerenergie an masse-feder-schwingern |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10145825B4 (de) * | 2001-09-13 | 2005-11-17 | Institut für Fertigteiltechnik und Fertigbau Weimar e.V. | Anordnung zur Verdichtung und Formgebung von Gemengen |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1444020A (fr) * | 1965-05-05 | 1966-07-01 | Mini Transporturilor Si | Table à secousses |
GB2103333A (en) * | 1981-08-03 | 1983-02-16 | Richard Peter Bernard Davis | Improvements in vibrators |
EP0258171A2 (de) * | 1986-08-29 | 1988-03-02 | Alperin Technical Pty.Ltd | Verbundelement, Verfahren und Vorrichtung zu dessen Herstellung |
US5606231A (en) * | 1993-12-04 | 1997-02-25 | Netter Gmbh | Vibrating table for masses to be compacted and a vibratory method of compaction for the compaction of concrete |
DE29712242U1 (de) * | 1997-07-11 | 1997-09-18 | Lonz Industrieautomation GmbH, 65510 Hünstetten | Unwuchtrüttler |
NL1008725C2 (nl) * | 1998-03-27 | 1999-10-01 | Mason Europ B V | Werkwijze voor het regelen van een verdichtingsinrichting alsmede een dergelijke verdichtingsinrichting. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4116647C5 (de) * | 1991-05-22 | 2004-07-08 | Hess Maschinenfabrik Gmbh & Co. Kg | Rüttelvorrichtung |
DE4315344A1 (de) * | 1993-05-08 | 1994-11-10 | Siegfried Gebhart | Vorrichtung zum Erzeugen von Vibrationen |
-
1998
- 1998-11-02 DE DE1998150351 patent/DE19850351A1/de not_active Withdrawn
-
1999
- 1999-10-27 EP EP99121397A patent/EP0999020A3/de not_active Withdrawn
- 1999-11-01 CA CA 2287851 patent/CA2287851A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1444020A (fr) * | 1965-05-05 | 1966-07-01 | Mini Transporturilor Si | Table à secousses |
GB2103333A (en) * | 1981-08-03 | 1983-02-16 | Richard Peter Bernard Davis | Improvements in vibrators |
EP0258171A2 (de) * | 1986-08-29 | 1988-03-02 | Alperin Technical Pty.Ltd | Verbundelement, Verfahren und Vorrichtung zu dessen Herstellung |
US5606231A (en) * | 1993-12-04 | 1997-02-25 | Netter Gmbh | Vibrating table for masses to be compacted and a vibratory method of compaction for the compaction of concrete |
DE29712242U1 (de) * | 1997-07-11 | 1997-09-18 | Lonz Industrieautomation GmbH, 65510 Hünstetten | Unwuchtrüttler |
NL1008725C2 (nl) * | 1998-03-27 | 1999-10-01 | Mason Europ B V | Werkwijze voor het regelen van een verdichtingsinrichting alsmede een dergelijke verdichtingsinrichting. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002038289A1 (de) * | 2000-11-12 | 2002-05-16 | GEDIB Ingenieurbüro und Innovationsberatung GmbH | Vorrichtung zur modulation der erregerenergie an masse-feder-schwingern |
Also Published As
Publication number | Publication date |
---|---|
DE19850351A1 (de) | 2000-05-04 |
CA2287851A1 (en) | 2000-05-02 |
EP0999020A3 (de) | 2002-05-29 |
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