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DE922354C - Device for soil or concrete compaction - Google Patents

Device for soil or concrete compaction

Info

Publication number
DE922354C
DE922354C DEL11176A DEL0011176A DE922354C DE 922354 C DE922354 C DE 922354C DE L11176 A DEL11176 A DE L11176A DE L0011176 A DEL0011176 A DE L0011176A DE 922354 C DE922354 C DE 922354C
Authority
DE
Germany
Prior art keywords
soil
roller
frequency
exciter
unit
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
Application number
DEL11176A
Other languages
German (de)
Inventor
Max Dr-Ing Greiner
Heinz Dr-Ing Jordan
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL11176A priority Critical patent/DE922354C/en
Priority to GB3249352A priority patent/GB735898A/en
Priority to FR1068528D priority patent/FR1068528A/en
Application granted granted Critical
Publication of DE922354C publication Critical patent/DE922354C/en
Expired legal-status Critical Current

Links

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
    • B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
    • 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
    • E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
    • 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
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/063—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools
    • E04G21/066—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools acting upon the surface of the concrete, whether or not provided with parts penetrating the concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Soil Working Implements (AREA)
  • Road Paving Machines (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Description

Es ist bekannt, daß man eine Verdichtung des Erdbodens oder von Beton durch Walzen von entsprechendem Gewicht und durch Stampfvorrichtungen bzw. Vibrieraggregate oder Bodenrüttler erzielen kann. Sämtliche bekannten Geräte haben den Nachteil, daß die Tiefenwirkung zu gering bleibt. Dieser Nachteil ist zum Teil darin begründet, daß die Oberfläche der strahlenförmig wirkenden Verdichtungsgeräte zu klein im Verhältnis zurIt is known that a compaction of the ground or of concrete by rolling the appropriate Weight and can achieve by tamping devices or vibrating units or floor vibrators. All known devices have the disadvantage that the depth effect remains too low. Part of this disadvantage is due to that the surface of the radiating acting compaction equipment is too small in relation to the

ίο abgestrahlten Wellenlänge ist, die durch die Betriebsfrequenz und durch die Eigenschaften des Bodens bedingt ist, und andererseits darin, daß die statische Vorbelastung bei Rüttelgeräten zu klein ist, um eine wirksame Ankopplung des Bodens an die Rüttelfläche zu erzielen. Weder die statische Last einer langsam bewegten Walze noch die dynamische Wirkung eines mit konstanter Frequenz betriebenen Oberflächenrüttlers reichten bei den Wellenlängen der üblichen Bodenarten aus, um eine Verdichtung bis zu einer Tiefe von 50 bis 100 cm zu erzielen.ίο radiated wavelength is determined by the operating frequency and is conditioned by the properties of the soil, and on the other hand in that the static preload in vibrating devices is too small to effectively couple the floor to it to achieve the vibrating surface. Neither the static load of a slowly moving roller nor the The dynamic effect of a surface vibrator operated at a constant frequency was sufficient for the Wavelengths of the usual types of soil to allow compaction to a depth of 50 to 100 cm.

Die Eigenfrequenzen der verschiedenen Bodenarten liegen in der Größenordnung von etwa 15 bis 40 Hz, wie man aus Messungen weiß. Die Tiefenwirkung ist bekanntlich dann am größten, wenn der Boden bei entsprechender Vorbelastung in seiner Eigenfrequenz erregt wird. Die normalen Rüttelgeräte sind aber üblicherweise auf eine einzige Frequenz abgestimmt. Dieser Nachteil soll erfindungsgemäß nun dadurch vermieden werden, daß die Speisefrequenz des Erregers z. B. durch ein Leonardaggregat in den Grenzen moduliert wird, welche die Eigenfrequenzen des Bodens einschließen. The natural frequencies of the different types of soil are around 15 up to 40 Hz, as is known from measurements. The depth effect is known to be greatest when when the soil is excited in its natural frequency with a corresponding pre-load. The normal ones Vibrators are usually tuned to a single frequency. This disadvantage is supposed to according to the invention can now be avoided that the feed frequency of the pathogen z. B. by a Leonard unit is modulated within the limits that include the natural frequencies of the soil.

Bei der praktischen Durchbildung des Erfindungsgedankens kann beispielsweise die statische Bodenvorbelastung durch eine Hohlwalze erzielt werden, die langsam über den zu verdichtendenIn the practical implementation of the idea of the invention For example, the static floor pre-load can be achieved by a hollow roller be that slowly over the to be compacted

Boden hinwegbewegt wird. Die Vor- bzw. Rückwärtsbewegung der Walze kann dabei etwa durch einen vorgespannten Rad- bzw. Raupenschlepper erfolgen oder vermittels Trossen oder ähnlicher Zugvorrichtungen zwischen zwei stationären Winden.Floor is moved away. The forwards and backwards movement of the roller can be carried out by a pre-tensioned wheel or caterpillar tractor or by means of cables or similar Pulling devices between two stationary winches.

Zur Schwingungserregung der Walze dient eine in ihrem Innern angeordnete Wuchtmasse, die von einem Drehstrommotor angetrieben wird, dessenA balancing mass arranged in its interior serves to excite vibrations from the roller a three-phase motor is driven, whose

ίο Speisefrequenz moduliert ist. Natürlich kann der Antrieb der Wuchtmasse auch durch einen Gleichstrommotor erfolgen, dessen Erregung und damit dessen Drehzahl periodisch oder aber von Hand zwischen zwei Grenzen geändert werden. Diese Grenzen werden so gewählt, daß die vermuteten Eigenfrequenzen des Bodens innerhalb des erwähnten Frequenzbereiches liegen. Selbstverständlich kann die Schwingungserregung der Hohlwalze auch durch einen elektromagnetischen Schwingmotor erfolgen, dessen Erregerwicklung durch Frequenzteilung mit Subharmonischen der Netzfrequenz gespeist wird.ίο the feed frequency is modulated. Of course he can The balancing mass is also driven by a direct current motor, its excitation and thus whose speed can be changed periodically or manually between two limits. These limits are chosen so that the assumed natural frequencies of the soil are within the mentioned Frequency range. Of course, the oscillation excitation of the hollow roller can also by means of an electromagnetic vibrating motor, the field winding of which is divided by frequency is fed with subharmonics of the network frequency.

Die Lieferung der variablen Speisefrequenz des Schwingungserregers kann z.B. durch ein Leonardaggregat erfolgen, das man zweckmäßigerweise auf dem Schlepper für die Bewegung der Walze anordnen wird. Natürlich kann man auch das Aggregat ortsfest aufstellen und die Stromversorgung des Erregers bzw. seines Antriebes über Kabel od. dgl. vornehmen. Andererseits kann es auch für die Verdichtung von großen Flächen zweckmäßig sein, den Antrieb der Walze in ihrem Hohlraum unterzubringen, wobei das Antriebsaggregat für die Walze gleichzeitig auch den Antrieb des Generators für den Schwingungserreger bewirkt.The delivery of the variable feed frequency of the vibration exciter can e.g. by a Leonard unit take place, which is expediently arranged on the tractor for the movement of the roller will. Of course, you can also set up the unit and the power supply of the exciter or its drive via cables or the like. On the other hand, it can also be used for the compaction of large areas may be useful, the drive of the roller in its cavity accommodate, the drive unit for the roller at the same time also driving the Generators for the vibration exciter causes.

An Stelle der Walze kann natürlich auch einInstead of the roller, a

schrittweise vorwärts bewegter Platten- oder Flächenverdichter gewählt werden, der z. B. durch einen elektromagnetischen Vibrator in Schwingungen versetzt wird, wobei der letztere wieder eine modulierte Speisefrequenz erhält.stepwise moving forward plate or surface compactor can be selected, the z. B. by an electromagnetic vibrator is vibrated, the latter again receives a modulated feed frequency.

Claims (7)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Vorrichtung zur Boden- oder Betonverdichtung, gekennzeichnet durch eine auf den Boden bzw. Beton wirkende und vorbelastete Erregerfläche, die durch einen oder mehrere Schwingungserreger in mechanische Schwingungen versetzt wird, deren Frequenz zwischen zwei Grenzen moduliert ist, welche die Eigenfrequenzen des Bodens einschließen.1. Device for soil or concrete compaction, characterized by one on the Soil or concrete acting and preloaded pathogen area caused by one or more Vibration exciter is set in mechanical vibrations, the frequency of which is between two boundaries is modulated, which include the natural frequencies of the soil. 2. Vorrichtung nach Anspruch 1, gekennzeichnet durch eine als Erregerfläche dienende, bewegte Walze, die mit dem Erreger gekoppelt ist.2. Apparatus according to claim 1, characterized by a moving roller that serves as the exciter surface and is coupled to the exciter is. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Schwingungserregung der Walze durch eine in ihrem Innern angeordnete Wuchtmasse oder einen elektromagnetischen Schwingmotor bewirkt wird.3. Apparatus according to claim 1 and 2, characterized in that the vibration excitation of the roller by one in its interior arranged balancing mass or an electromagnetic oscillating motor is effected. 4. Vorrichtung nach Anspruch 1 und 3, dadurch gekennzeichnet, daß die Erregerwicklung des Schwingmotors mit Subharmonischen der Netzfrequenz gespeist wird. 6g4. Apparatus according to claim 1 and 3, characterized characterized in that the excitation winding of the oscillating motor with subharmonics the mains frequency is fed. 6g 5. Vorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die modulierte Frequenz einem Leonardaggregat entnommen wird, das auf einem zur Bewegung der Walze dienenden Schlepper angeordnet ist.5. Apparatus according to claim 1 to 4, characterized characterized in that the modulated frequency is taken from a Leonard unit, which is arranged on a tractor used to move the roller. 6. Vorrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß die Bewegung der Walze durch ein in ihrem Innern angeordnetes Antriebsaggregat erfolgt.6. Apparatus according to claim 1 to 5, characterized in that the movement of the Roll takes place by a drive unit arranged in its interior. 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das die Bewegung der Walze bewirkende Antriebsaggregat gleichzeitig den Antrieb des Leonardaggregats sicherstellt.7. Apparatus according to claim 6, characterized in that the movement of the roller causing drive unit at the same time ensures the drive of the Leonard unit. 1 9579 12.541 9579 12.54
DEL11176A 1951-12-27 1951-12-27 Device for soil or concrete compaction Expired DE922354C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEL11176A DE922354C (en) 1951-12-27 1951-12-27 Device for soil or concrete compaction
GB3249352A GB735898A (en) 1951-12-27 1952-12-22 A device for densifying material such as soil or concrete
FR1068528D FR1068528A (en) 1951-12-27 1952-12-23 Device for compaction of soil or concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL11176A DE922354C (en) 1951-12-27 1951-12-27 Device for soil or concrete compaction

Publications (1)

Publication Number Publication Date
DE922354C true DE922354C (en) 1955-01-13

Family

ID=32787650

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL11176A Expired DE922354C (en) 1951-12-27 1951-12-27 Device for soil or concrete compaction

Country Status (3)

Country Link
DE (1) DE922354C (en)
FR (1) FR1068528A (en)
GB (1) GB735898A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005034153A1 (en) 2005-07-19 2007-01-25 Kobra Formen Gmbh Device for the production of concrete moldings
US8439598B2 (en) * 2010-12-15 2013-05-14 Caterpillar Inc. Oscillatory compaction method

Also Published As

Publication number Publication date
GB735898A (en) 1955-08-31
FR1068528A (en) 1954-06-25

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