EP1212148B1 - Schwingungserreger für bodenverdichtungsgeräte - Google Patents
Schwingungserreger für bodenverdichtungsgeräte Download PDFInfo
- Publication number
- EP1212148B1 EP1212148B1 EP00965951A EP00965951A EP1212148B1 EP 1212148 B1 EP1212148 B1 EP 1212148B1 EP 00965951 A EP00965951 A EP 00965951A EP 00965951 A EP00965951 A EP 00965951A EP 1212148 B1 EP1212148 B1 EP 1212148B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phase position
- phase
- centrifugal
- vibration plate
- vibration
- 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.)
- Revoked
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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
- B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
-
- 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 vibration exciter, particularly in soil compaction equipment is used.
- Soil compactors especially vibration or vibrating plates, have a movable contact plate above the soil to be compacted, the acted upon by a vibration generated by a vibration exciter becomes.
- the shaking movement caused by this causes a mutual Moving and moving the soil particles, thereby closing gaps and the desired soil compaction can be achieved.
- phase relationship between the centrifugal weights or unbalanced shafts can be adjusted, whereby the alignment of the resulting Vibration or the resulting force the operator's wishes customizable.
- one of the unbalanced shafts can be rotated relative to a gear, which meshes with a gear of the other unbalanced shaft and generally for a fixed coupling of the rotary movement ensures.
- vibration exciters are in DE 36 09 360 and in DE 35 45 593 C2 described.
- FIG 5 shows a schematic side view of one from DE 29 09 204 C2 known vibration exciter.
- Fig. 5a shows the known vibration exciter, in which the phase position by a phase adjustment device, not shown, e.g. B. by that gear that can be rotated relative to one of the unbalanced shafts 1, 2 is set in such a way that the centrifugal forces 5, 6 diagonally upwards in one direction, that is with a Extend vertically and a forward horizontal component.
- a force diagram is also shown in FIG. 5a.
- FIG. 5b shows the vibration exciter with changed phase position.
- the unbalanced shaft 2 or the flyweight 4 relative to the unbalanced shaft 1 the centrifugal weight 3 rotated by an angle of 90 ° by the in FIG. to achieve the phase position shown.
- 7 shows a 180 ° cycle accordingly in 45 ° steps. From this it can be seen that in the case of FIGS. 7 shows no resulting horizontal forces, while the vertical forces add up to the maximum. At this phase consequently the vibrating plate remains in place and causes a maximum Soil compaction due to maximum vertical vibration.
- Fig. 5c shows the phase position of the unbalanced shafts 1, 2 for the Reverse travel of the vibrating plate (to the right in the figure).
- Vibrating plates with such vibration exciters prove to be problematic, which are used for asphalt or composite stone compaction should. If here the maximum vertical force acts in the reversing point, selective settlements can occur that can no longer be corrected. at Asphalt rolling is therefore usually the vibration in the reversing area switched off to prevent the roller from penetrating too deeply into the asphalt Avoid reversal of direction.
- From US-A-3,736,066 is a soil compacting device with two Vibrators known that are adjustable such that the vertical components the centrifugal forces generated by the centrifugal weights between 0 and a maximum value are adjustable while the horizontal components compensate the centrifugal forces at any time.
- the invention has for its object a vibration exciter for soil compaction equipment specify where a strong influence on certain Soils such as asphalt or composite stone when reversing or at a standstill the machine can be avoided.
- a vibration exciter according to the invention for soil compaction devices has parallel or coaxial to each other, in opposite directions at the same speed driven unbalanced shafts, each carrying at least one flyweight. It is a special feature of the invention that the phase position of the Flyweights can be adjusted by a phase adjustment device in such a way that the vertical components of the centrifugal forces generated by the centrifugal weights in any rotational position. According to the invention, it is thus possible to set a phase position in which the vertical components of the flyweights cancel so that the force resulting from the flow forces is not a vertical component and has no vertical vibration at all acts on the compacting surface. Despite continuous operation of the vibration exciter and thus rotation of the centrifugal forces can thus further compress of the underground can be avoided.
- the horizontal components of the centrifugal forces add up in rectified this phase position.
- the resulting force vector thus points a maximum horizontal component, which makes it possible to use the ground contact plate a high shear stress z. B. to bring into the asphalt surface, to smooth out small cracks or pores. Because during a 360 ° turn of the centrifugal weights resulting horizontal forces into one and generated in the other direction (forward and backward); emotional the soil compactor practically does not move.
- Phase position is adjustable so that the horizontal components of the Cancel centrifugal forces and add the vertical components in the same direction. This also allows a phase position to be set that has the advantages the vibration exciter already known from the prior art, in particular maximum compaction performance when the machine is at a standstill.
- phase adjuster at least one device for rotating one of each Centrifugal weights overlay relative to an associated other centrifugal weight to the opposite rotation of the unbalanced shafts.
- the phase adjustment device their structure and functionality in principle from the above cited publications are known from the prior art, can thus several units can be combined to provide the invention to satisfy versatile adjustment options of the phase position.
- vibration exciters come in a variety of forms known.
- phase adjustment devices e.g. B. from the cited prior art documents - known, through which the The phase position of the flyweights carried by the unbalanced shafts changed can be. Since the invention is not the detailed and concrete design a certain vibration exciter or a certain phase adjustment device, but rather a particularly suitable one, but so far Concerning unknown phase position is a description of a specific embodiment not mandatory.
- phase adjustment device does this must be suitable, the relative position of the flyweights on the unbalanced shafts in the superposition of the coupled, counter-rotating movement.
- the unbalanced shafts by meshing with each other Gears are coupled, the position of a gear with respect the associated unbalanced shaft can be changed, which also changes the Phase position of the flyweights changes.
- This principle has proven to be excellent in practice proven and - as already explained - z. B. in DE 29 09 204 C2, which in turn refers to further prior art, to which the present invention can be applied.
- vibration exciter In the vibration exciter, it can z. B. a pathogen with two act parallel shafts, each carrying a flyweight, the flyweights of the two unbalanced shafts are arranged opposite one another. On Such vibration exciter is also known from DE 29 09 204 C2.
- each of the unbalanced shafts carries two flyweights that are coaxially offset are.
- another vibration exciter it is possible to change the position the centrifugal weights arranged coaxially on an unbalanced shaft change, for example to cause a steering movement of the vibrating plate.
- the invention can be used with all of these vibration exciters come into use.
- FIG. 1 shows an overview of the phase positions provided according to the invention, where Fig. 1a) a forward drive of the vibrating plate (in the Fig. After left), Fig. 1b) a phase position in the state or reversing point and Fig. 1c) Phase position for the backward movement of the vibrating plate affects.
- FIGS. 1b) and 2 respectively concern the phase position in which the vibrating plate is in place.
- the 1b) and 2a) are the unbalanced shafts 1, 2 with the centrifugal weights 3, 4 so that the centrifugal forces 5, 6 in Horizontal direction and add up to a maximum value.
- the vibrating plate does not lift off the floor and no vertical vibration in the ground. Rather, the vibrating plate becomes alternate dragged forward and backward without significantly changing their point of view, so that shear forces act in the ground and z. B. pores or seal cracks.
- Fig. 3 shows the change in phase position when from the reversing point in Forward position is switched.
- the phase position is then determined by means of the phase adjustment device, not shown changed in that the unbalanced shaft 2 with the Flyweight 4 relative to the unbalanced shaft 1 with the flyweight 3 by one Angle of -90 ° (according to the mathematical sense of rotation). It was on it pointed out that this twist in addition to the permanent, coupled opposite rotation takes place, i.e. is superimposed.
- Unbalance shaft 2 instead of Unbalance shaft 2 also the unbalance shaft 1 simultaneously or exclusively turn to create the desired phase position.
- phase positions mentioned are set can be.
- the facilities required for this are known in principle, have so far not been used in the manner according to the invention.
- phase adjustment device usually consists of a single unit, the enables the desired adjustment of the phase position.
- the phase position over a certain range to change so that by adding all changes all desired Phase positions are adjustable.
- phase adjustment device when the phase adjustment device is not operated the phase position is constant over the entire rotation of the unbalanced shafts remains. 1a), 1b) and 1c) therefore show three different phase positions, 2 in the representations a) to e) only one phase position, but shows in different rotational positions.
- the unbalance in the reversing point only generate a resulting horizontal force vector that increases with increasing Running speed decreases and when changing the phase position and thereby pivoting the force vector, for example to a value from 45 ° forwards or backwards the value 1 / ⁇ 2 ⁇ C for the horizontal (VH) and vertical (VV) component reached, where C is the maximum achievable force value equivalent.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Road Paving Machines (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
- Fig. 1
- in schematischer Seitenansicht einen Schwingungserreger gemäß der Erfindung in verschiedenen Phasenlagen;
- Fig. 2
- verschiedene Drehstellungen des Schwingungserregers bei der in Fig. 1b) gezeigten Phasenlage;
- Fig. 3
- einen Übergang aus der in Fig. 1b) gezeigten Phasenlage in die in Fig. 1a) gezeigte Phasenlage;
- Fig. 4
- einen Übergang aus der in Fig. 1b) gezeigten Phasenlage in die in Fig. 1c) gezeigte Phasenlage:
- Fig. 5
- verschiedene Phasenlagen bei einem aus dem Stand der Technik bekannten Schwingungserreger;
- Fig. 6
- verschiedene Drehstellungen für die in Fig. 5a) gezeigte Phasenlage;
- Fig. 7
- verschiedene Drehstellungen für die in Fig. 5b) gezeigte Phasenlage.
Claims (6)
- Vibrationsplatte zur Bodenverdichtung, mit einem Schwingungserreger. der parallel zueinander stehende, gegenläufig mit gleicher Drehzahl antreibbare Unwuchtwellen (1, 2) aufweist, die jeweils wenigstens ein Fliehgewicht (3. 4) tragen, wobei die Phasenlage der Fliehgewichte durch eine Phaseneinstelleinrichtung derart einstellbar ist, daß sich die Vertikalkomponenten der durch die Fliehgewichte erzeugten Fliehkräfte (5, 6) in jeder Drehstellung aufheben, dadurch gekennzeichnet, daß sich in dieser Phasenlage die Horizontalkomponenten der Fliehkräfte (5, 6) gleichgerichtet addieren.
- Vibrationsplatte nach Anspruch 1, dadurch gekennzeichnet, daß zum Bewirken einer Fortbewegung des Bodenverdichtungsgeräts in eine erste Richtung die in Anspruch 1 definierte Phasenlage um einen positiven Winkel verstellbar ist.
- Vibrationsplatte nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß zum Bewirken einer Fortbewegung des Bodenverdichtungsgeräts in eine der ersten Richtung entgegengesetzte zweite Richtung die in Anspruch 1 definierte Phasenlage um einen negativen Winkel verstellbar ist.
- Vibrationsplatte nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß bei einem Wechsel zwischen den in den Ansprüchen 2 und 3 definierten Phasenlagen die in Anspruch 1 definierte Phasenlage übergangsweise einnehmbar ist.
- Vibrationsplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Phasenlage durch die Phaseneinstelleinrichtung derart einstellbar ist, daß sich die Horizontalkomponenten der Fliehkräfte (5, 6) aufheben und sich die Vertikalkomponenten gleichgerichtet addieren.
- Vibrationsplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Phaseneinstelleinrichtung wenigstens eine Einrichtung zum Verdrehen von jeweils einem der Fliegewichte (3) relativ zu einem zugehörigen anderen Fliehgewicht (4) in Überlagerung zu der gegenläufigen Drehung der Unwuchtwellen (1, 2) aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19943391 | 1999-09-10 | ||
DE19943391A DE19943391A1 (de) | 1999-09-10 | 1999-09-10 | Schwingungserreger für Bodenverdichtungsgeräte |
PCT/EP2000/008806 WO2001019535A1 (de) | 1999-09-10 | 2000-09-08 | Schwingungserreger für bodenverdichtungsgeräte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1212148A1 EP1212148A1 (de) | 2002-06-12 |
EP1212148B1 true EP1212148B1 (de) | 2004-07-21 |
Family
ID=7921542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00965951A Revoked EP1212148B1 (de) | 1999-09-10 | 2000-09-08 | Schwingungserreger für bodenverdichtungsgeräte |
Country Status (5)
Country | Link |
---|---|
US (1) | US6655871B1 (de) |
EP (1) | EP1212148B1 (de) |
JP (1) | JP2003509192A (de) |
DE (2) | DE19943391A1 (de) |
WO (1) | WO2001019535A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10306791A1 (de) * | 2003-02-18 | 2004-08-26 | Bomag Gmbh | Schwingungserregervorrichtung |
DE102005029432A1 (de) * | 2005-06-24 | 2006-12-28 | Wacker Construction Equipment Ag | Bodenverdichtungsvorrichtung mit automatischer oder bedienerintuitiver Verstellung des Vorschubvektors |
US7938595B2 (en) * | 2007-04-30 | 2011-05-10 | Caterpillar Paving Products Inc. | Surface compactor and method of operating a surface compactor |
DE102013021494B4 (de) | 2012-12-28 | 2023-11-30 | Bomag Gmbh | Vibrationsplatte mit einem Schwingungserreger |
DE102017000193A1 (de) * | 2017-01-11 | 2018-07-12 | Bomag Gmbh | Walze zur Bodenverdichtung sowie Verfahren zum Erzeugen eines Schwingungsbildes einer Walze zur Bodenverdichtung |
CN111715503A (zh) * | 2020-07-21 | 2020-09-29 | 武汉海德力液压技术有限公司 | 一种4d型振动结构 |
DE102022109299A1 (de) | 2022-04-14 | 2023-10-19 | Wacker Neuson Produktion GmbH & Co. KG | Unwuchterreger für Bodenverdichtungsvorrichtungen |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3736066A (en) | 1971-03-15 | 1973-05-29 | Pettibone Corp | Vibratory earth compacting apparatus |
US3878733A (en) * | 1974-01-15 | 1975-04-22 | Stone Construction Equipment | Compactor with directional control for eccentric weights |
DE2909204C2 (de) * | 1979-03-09 | 1982-08-19 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Schwingungserreger mit zwei Unwuchten |
US4398431A (en) * | 1979-04-09 | 1983-08-16 | Melnick Harry S | Mechanical power transmitting system |
US4499779A (en) * | 1982-06-07 | 1985-02-19 | M-B-W Inc. | Vibratory compactor |
DE3545593C2 (de) * | 1985-12-21 | 1994-05-05 | Ammann Duomat Verdichtung | Vibrationsplatte zur Verdichtung des Bodens |
DE3609360A1 (de) * | 1986-03-20 | 1987-09-24 | Ammann Duomat Verdichtung | Vibrationsplatte zur verdichtung des bodens |
JPH0444506A (ja) * | 1990-06-11 | 1992-02-14 | Mikasa Sangyo Kk | 振動締固め機の起振装置 |
DE19529115A1 (de) * | 1995-08-08 | 1997-03-06 | Wacker Werke Kg | Vibrationsmechanismus, insbesondere zur Verwendung zur Verdichtung von Böden |
DE19629324C1 (de) * | 1996-07-20 | 1997-10-16 | Wacker Werke Kg | Vibrationsplatte mit Besohlung |
US5825663A (en) * | 1996-11-04 | 1998-10-20 | Gec-Marconi Aerospace Inc. | Vibration control system |
-
1999
- 1999-09-10 DE DE19943391A patent/DE19943391A1/de not_active Ceased
-
2000
- 2000-09-08 US US10/070,891 patent/US6655871B1/en not_active Expired - Fee Related
- 2000-09-08 JP JP2001523150A patent/JP2003509192A/ja active Pending
- 2000-09-08 WO PCT/EP2000/008806 patent/WO2001019535A1/de not_active Application Discontinuation
- 2000-09-08 DE DE50007146T patent/DE50007146D1/de not_active Revoked
- 2000-09-08 EP EP00965951A patent/EP1212148B1/de not_active Revoked
Also Published As
Publication number | Publication date |
---|---|
JP2003509192A (ja) | 2003-03-11 |
WO2001019535A1 (de) | 2001-03-22 |
DE50007146D1 (de) | 2004-08-26 |
EP1212148A1 (de) | 2002-06-12 |
DE19943391A1 (de) | 2001-04-12 |
US6655871B1 (en) | 2003-12-02 |
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