EP1383616B1 - Steuerung für eine unwucht-verstelleinrichtung einer bodenverdichtungsvorrichtung - Google Patents
Steuerung für eine unwucht-verstelleinrichtung einer bodenverdichtungsvorrichtung Download PDFInfo
- Publication number
- EP1383616B1 EP1383616B1 EP02732633A EP02732633A EP1383616B1 EP 1383616 B1 EP1383616 B1 EP 1383616B1 EP 02732633 A EP02732633 A EP 02732633A EP 02732633 A EP02732633 A EP 02732633A EP 1383616 B1 EP1383616 B1 EP 1383616B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- controller
- signal
- reference piston
- oil
- 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.)
- Expired - Lifetime
Links
- 239000002689 soil Substances 0.000 title description 9
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 1
- 230000008859 change Effects 0.000 description 6
- 238000005056 compaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
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
-
- 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
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2838—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT with out using position sensors, e.g. by volume flow measurement or pump speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/06—Details
- F15B7/08—Input units; Master units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/09—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
Definitions
- the invention relates to a controller for an imbalance adjustment in a vibration exciter.
- vibration exciters are in particular for use in soil compaction machines, like vibratory plates or rollers, known. It will be usually two - but also several - unbalanced shafts positive in opposite directions driven in rotation, being characterized by the superposition of centrifugal forces every single imbalance wave gives a resulting force, depending on the embodiment of the vibration exciter in terms of their amount and / or the direction can be adjusted.
- vibration exciter have long been known, in particular with vibrating plates, so that a further description is unnecessary.
- vibration exciters thus, the phase angles of imbalances to each other to reverse the direction of travel or to change the so-called "m r value". They are based on a hydraulic adjustment by means of a unilaterally acted upon Piston, which with decreasing oil pressure either via a spring device or via the restoring moment exerted by the imbalances is reset.
- EP-A-0 960 659 there is also a controller for an unbalance adjustment device described in which the adjusting piston hydraulically with a Reference piston is coupled.
- the position of the reference piston is over a switching valve regulated.
- the position of the switching valve in turn results by acting on the valve body from two sides forces, namely on one side by a predetermined by the operator and a spring in the Valve body introducible force, and on the other side by one of the reference piston via a spring on the valve body abandoned force.
- the known controller is difficult to tune and does not allow implement different control algorithms. To vote or change The vote would have every time the characteristics of the valve body acting spring sets are changed, which is either a high structural or a high installation effort means.
- the invention is based on the object, a control for an imbalance adjustment in a vibration exciter, in which a precise Detecting the adjusting piston position and a simple and reliable Activation is possible with changes in the adjusting piston position. Farther It should be possible, the respective position of the adjusting piston and to capture the imbalances or unbalanced shafts that it controls.
- a piston rod may be provided whose position corresponds to the position of the reference piston and thus precise conclusions on the position of the adjusting piston and thus of the adjusting piston acted upon imbalances or imbalance waves.
- the position signal is delivered to the controller, which is itself z. B. can act as an electronic control, and continue through an operable by an operator operating signal is applied.
- the Control means compares the position signal corresponding to an actual value for the Position of the imbalances in the vibration exciter corresponds, with the operating signal, that can be regarded as a target value.
- At the operating signal may be the operator's instructions regarding the direction of travel, but also act of the vibrating agent to be generated vibration intensity.
- the control device then generates a control signal, with a Switching valve is controlled to the ⁇ lzu- or outflow to or from the second side of the reference piston to control.
- a Switching valve is controlled to the ⁇ lzu- or outflow to or from the second side of the reference piston to control.
- controller Due to the presence of the position signal and thus the reliable Information about the position of the imbalances in the vibration exciter is possible to implement with the help of the control device arbitrary control algorithms. If the controller is an electronic controller This is only changes in the electronically stored Program required.
- a particularly advantageous embodiment of the invention is the Adjusting piston arranged on the vibration exciter, while the reference piston in a vibrationally decoupled from the vibration exciter Area is arranged.
- This embodiment can be particularly advantageous in a soil compacting device, e.g. B. a vibrating plate, implement defined in claim 12 and having a drive Upper mass and a vibration exciter bearing, with the upper mass Having a spring means coupled lower mass, wherein the adjusting piston of the control on the lower mass and the reference piston is arranged on the upper mass.
- a soil compacting device e.g. B. a vibrating plate, implement defined in claim 12 and having a drive Upper mass and a vibration exciter bearing, with the upper mass Having a spring means coupled lower mass, wherein the adjusting piston of the control on the lower mass and the reference piston is arranged on the upper mass.
- vibration-sensitive components are required, for.
- Fig. 1 shows a section of a soil compacting device, for. B. one Vibrating plate, in which the control according to the invention is used comes.
- a per se known, above-described vibration exciter 1 is at a Lower mass of the soil compaction device arranged. Furthermore, it is on the lower mass a soil contact plate, not shown, for compression of the soil.
- an adjusting piston 3 is arranged, whose one side is acted upon by a spring 4. His other side is over a hydraulic line 5 with a first side 6 of a on the upper mass. 2 arranged reference piston 7 is connected.
- a piston rod 10 is arranged, which via a spring 11 against a pressure sensor 12 is supported.
- the as signal generating device Serving pressure sensor 12 detects the of the spring 11 and thus of the Reference piston 7 applied pressure and converts it into a position of Piston rod 10 indicative position signal 13.
- the position signal 13 is transmitted to a controller 14.
- the control device 14 receives furthermore an operating signal 15, which results from operating procedures of the operator, z. As an operation of a lever or push buttons or by a remote control is caused.
- the position signal 13 can also be via an optical or acoustic display be issued to the operator information about the behavior to provide the soil compacting device.
- Control signal 16 which is supplied to magnetic coils 17 of a switching valve 18 becomes.
- the switching valve 18 shown in Fig. 1 with the magnetic coils 17 is used just the explanation.
- the control signal 16 in diverse Sent to a valve and can change its position.
- the switching valve 18 is a 3/3-way valve, the between three positions 18a, 18b and 18c can be switched. It serves for controlling an oil inflow from an oil pump serving as a pressure oil source 19 to the second side 8 of the reference piston 7 and an oil drain from the second side 8 to an oil return 20.
- the switching valve 18 is shown in the position 18 b, in which an oil inflow and an oil drain to or from the second side 8 of the reference piston 7 are interrupted.
- the position 18a allows the oil inflow while the position 18c allows the oil drain in the return 20.
- a safety valve 21 is provided between the pressure side of the oil pump 19 and the oil return 20 is above.
- the first side 6 of the reference piston 7 is via a check valve 22nd also connected to the oil return 20, wherein the check valve 22nd is installed so that there is an oil reflux from the first side 6 of the Reference piston 7 to the oil return 20 prevents.
- the controller 14 then routes in response to the operator's request and the resulting control signal 15 suitable measures by driving the switching valve 18 a. For example, an oil inflow to the second side of the reference piston 7 via the switching valve in position 18a connected, the displacement of the reference piston 7 - accordingly Fig. 1 - causes to the left. Also, the adjusting piston 3 shifts thereby to the left.
- the switching valve 18 is switched to the position 18c, so that the oil of the second side 8 of the reference piston 7 in the oil return 20 flow can.
- the oil in the hydraulic line 5 and on the first Page 6 of the reference piston 7 without pressure so that the adjusting piston 3 through the action of the spring 4 or by the inertia effect of the supported by him Unbalance is also shifted to the right until it stops at the mechanical stop of him receiving cylinder to a standstill comes.
- the reference piston 7 follows this movement as far as just this Standstill.
- the reference piston 7 does not reach its right extreme position.
- the check valve 22 can thus flow oil to the first side 6 of the reference piston 7 and compensate for any leakage. This compensation is made by the different pressurization surfaces on the first side 6 and the second side 8 of the reference piston 7 until this his reached right extreme position.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
- Fig. 1
- ein Blockschaltbild einer erfindungsgemäßen Steuerung.
Claims (12)
- Steuerung für eine Unwucht-Verstelleinrichtung in einem Vibrationserreger (1), miteinem hydraulisch betätigbaren Verstellkolben (3) zum Ändern der Relativstellung von Unwuchten in dem Vibrationserreger (1);einem Referenzkolben (7), dessen erste Seite (6) mit einer Seite des Verstellkolbens (3) hydraulisch gekoppelt ist;einer Signalerzeugungseinrichtung (12) zum Erzeugen eines Stellungssignals (13) in Abhängigkeit von einer Stellung des Referenzkolbens (7);einer durch das Stellungssignal (13) sowie durch ein von einem Bediener abgebbares Bediensignal (15) beaufschlagbaren Steuereinrichtung (14), die, im Gebrauch, in Abhängigkeit von dem Stellungssignal (13) und dem Bediensignal (15) ein Steuersignal (16) erzeugt; und miteinem mit dem Referenzkolben (7) gekoppelten Schaltventil (18) zum Steuern eines Ölzuflusses von einer Druckölquelle (19) oder eines Ölabflusses zu einem Ölrücklauf (20) an einer zweiten Seite (8) des Referenzkolbens (7), wobei die Stellung des Schaltventils (18) in Abhängigkeit von dem Steuersignal (16) der Steuereinrichtung (14) veränderbar ist.
- Steuerung nach Anspruch 1, dadurch gekennzeichnet, dass die Stellung des Verstellkolbens (3) nur über eine Änderung der Stellung des Referenzkolbens (7) veränderbar ist.
- Steuerung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das hydraulische Volumen zwischen dem Verstellkolben (3) und dem Referenzkolben (7) im Wesentlichen konstant ist.
- Steuerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Verstellkolben (3) an dem Vibrationserreger (1) angeordnet ist, und dass der Referenzkolben (7) in einem von dem Vibrationserreger (1) schwingungsmäßig entkoppelten Bereich (2) angeordnet ist.
- Steuerung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Signalerzeugungseinrichtung einen Näherungssensor, eine Induktionsspule, einen Drucksensor (12) oder einen optischen Sensor aufweist.
- Steuerung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Stellungssignal (13) von der Signalerzeugungseinrichtung (12) über eine optische oder akustische Anzeige ausgebbar ist.
- Steuerung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Stellungssignal (13) einen Ist-Wert und das Bediensignal (15) einen Soll-Wert für eine in der Steuereinrichtung vorhandene Regeleinrichtung bildet, die, im Gebrauch, in Abhängigkeit von dem Ist- und dem Soll-Wert das Steuersignal (16) erzeugt.
- Steuerung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die erste Seite (6) des Referenzkolbens (7) über ein Rückschlagventil (22) mit dem Ölrücklauf (20) verbunden ist, wobei das Rückschlagventil (22) derart angeordnet ist, dass es einen Ölabfluss von der ersten Seite (6) des Referenzkolbens (7) zum Ölrücklauf (20) verhindert.
- Steuerung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass in dem Ölrücklauf (20) ein Fließhindernis oder eine Drossel (23) angeordnet ist.
- Steuerung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Referenzkolben (7) mit einer Kolbenstange (10) versehen ist und dass die Signalerzeugungseinrichtung (12) zum Erzeugen des Stellungssignals (13) in Abhängigkeit von einer Stellung der Kolbenstange (10) ausgebildet ist.
- Steuerung nach Anspruch 10, dadurch gekennzeichnet, dass die Kolbenstange (10) an der zweiten Seite (8) des Referenzkolbens (7) angeordnet ist.
- Bodenverdichtungsvorrichtung, miteiner einen Antrieb aufweisenden Obermasse (2);einer einen von dem Antrieb angetriebenen Vibrationserreger (1) aufweisenden, mit der Obermasse (2) über eine Federeinrichtung gekoppelten Untermasse; und miteiner Steuerung gemäss einem der Ansprüche 1 bis 11 zum Steuern des Vibrationserregers (1);
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10121383 | 2001-05-02 | ||
DE10121383A DE10121383C2 (de) | 2001-05-02 | 2001-05-02 | Steuerung für eine Unwucht-Verstelleinrichtung in einem Vibrationserreger einer Bodenverdichtungsvorrichtung |
PCT/EP2002/004260 WO2002087789A1 (de) | 2001-05-02 | 2002-04-17 | Steuerung für eine unwucht-verstelleinrichtung einer bodenverdichtungsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1383616A1 EP1383616A1 (de) | 2004-01-28 |
EP1383616B1 true EP1383616B1 (de) | 2005-05-18 |
Family
ID=7683402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732633A Expired - Lifetime EP1383616B1 (de) | 2001-05-02 | 2002-04-17 | Steuerung für eine unwucht-verstelleinrichtung einer bodenverdichtungsvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1383616B1 (de) |
JP (1) | JP4058346B2 (de) |
DE (2) | DE10121383C2 (de) |
WO (1) | WO2002087789A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004015589A1 (de) * | 2004-02-29 | 2005-09-15 | Bomag Gmbh | Steuerung und Steuerungsverfahren für eine Vibrationsmaschine |
EP1568420B1 (de) | 2004-02-29 | 2018-08-15 | BOMAG GmbH | Steuerung und Steuerungsverfahren für eine Vibrationsmaschine |
CN102590865B (zh) * | 2012-03-12 | 2013-09-11 | 杭州电子科技大学 | 用于水下地质勘测的水压驱动激振器 |
US20160290505A1 (en) * | 2016-06-14 | 2016-10-06 | Caterpillar Inc. | Cylinder-piston assembly |
DE102016124341A1 (de) | 2016-12-14 | 2018-06-14 | Hamm Ag | Baumaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2692523B1 (fr) * | 1992-06-19 | 1994-10-07 | Procedes Tech Construction | Dispositif pour la commande d'un vibrateur à moment variable. |
AU692479B2 (en) * | 1993-11-30 | 1998-06-11 | Sakai Heavy Industries, Ltd. | Vibrating mechanism and apparatus for generating vibrations for a vibration compacting roller with a variable amplitude |
DE4425905A1 (de) * | 1994-07-21 | 1996-01-25 | Bald Hubert | Vorrichtung und Verfahren zur Kompensation von Querschwingungen an Unwuchtvibratoren mit vorgegebener Schwingrichtung |
JP3318528B2 (ja) * | 1998-05-13 | 2002-08-26 | 三笠産業株式会社 | 振動締固め機の前後進操作機構 |
DE20008553U1 (de) * | 2000-05-12 | 2000-08-31 | Weber Maschinentechnik GmbH, 57334 Bad Laasphe | Verstelleinheit für Bodenverdichter |
-
2001
- 2001-05-02 DE DE10121383A patent/DE10121383C2/de not_active Expired - Fee Related
-
2002
- 2002-04-17 JP JP2002585122A patent/JP4058346B2/ja not_active Expired - Fee Related
- 2002-04-17 WO PCT/EP2002/004260 patent/WO2002087789A1/de active IP Right Grant
- 2002-04-17 EP EP02732633A patent/EP1383616B1/de not_active Expired - Lifetime
- 2002-04-17 DE DE50203150T patent/DE50203150D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2002087789A1 (de) | 2002-11-07 |
JP4058346B2 (ja) | 2008-03-05 |
EP1383616A1 (de) | 2004-01-28 |
JP2004524154A (ja) | 2004-08-12 |
DE10121383A1 (de) | 2002-11-14 |
DE10121383C2 (de) | 2003-04-03 |
DE50203150D1 (de) | 2005-06-23 |
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