US20030223817A1 - Compaction roller - Google Patents

Compaction roller Download PDF

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Publication number
US20030223817A1
US20030223817A1 US10/382,440 US38244003A US2003223817A1 US 20030223817 A1 US20030223817 A1 US 20030223817A1 US 38244003 A US38244003 A US 38244003A US 2003223817 A1 US2003223817 A1 US 2003223817A1
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US
United States
Prior art keywords
unbalance
piston
cylinder
compaction roller
actuating
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.)
Abandoned
Application number
US10/382,440
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English (en)
Inventor
Richard Stelbrink
Steffen Wachsmann
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.)
ABG Allgemeine Baumaschinen GmbH
Original Assignee
ABG Allgemeine Baumaschinen 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 ABG Allgemeine Baumaschinen GmbH filed Critical ABG Allgemeine Baumaschinen GmbH
Assigned to ABG ALLGEMEINE BAUMASCHINEN-GESELLSCHAFT MBH reassignment ABG ALLGEMEINE BAUMASCHINEN-GESELLSCHAFT MBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STELBRINK, RICHARD, WACHSMANN, STEFFEN
Publication of US20030223817A1 publication Critical patent/US20030223817A1/en
Abandoned legal-status Critical Current

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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
    • E01C19/23—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

Definitions

  • the invention relates to a compaction roller as it is used for the compaction of materials in earthwork and road construction.
  • vibratory rollers for compacting unbound soils and hydraulic or bituminous courses can be equipped with an eccentrically loaded rotating shaft.
  • at least one fixed unbalance is provided.
  • an additional changeover weight is additionally possible, as is usually the case, for an additional changeover weight to be provided in order to generate two different nominal amplitudes.
  • German document DE 69425111 T2 discloses a compaction roller whose unbalance, which is arranged so as to be rotatable transversely with respect to the rolling body axis, can be adjusted in an infinitely variable manner via a hydraulic cylinder and a connecting rod.
  • this is very expensive and complex.
  • a directional vibrator comprises at least two exciter shafts which run in opposite directions and whose resulting force can be rotated without moment in an infinitely variable manner from a horizontal direction into a vertical direction.
  • the nominal amplitude or unbalance is not changed in this system. It is also the case here, in particular where horizontal vibrations are concerned, that undesirable ripples, smoothing effects and pore closures can occur.
  • German Patent Application DE 100 31 617 A1 also discloses a vibration generator for a soil compaction machine in which an exciter shaft is provided with an unbalance, a cylinder arranged radially with respect to the exciter shaft and having a spring-loaded piston being used for the purpose of bringing about automatic adjustment of the unbalance by virtue of the centrifugal force changing through a change in the speed of rotation.
  • a vibration generator for a soil compaction machine in which an exciter shaft is provided with an unbalance, a cylinder arranged radially with respect to the exciter shaft and having a spring-loaded piston being used for the purpose of bringing about automatic adjustment of the unbalance by virtue of the centrifugal force changing through a change in the speed of rotation.
  • each frequency is assigned exactly one amplitude.
  • the unbalance shaft can only be accelerated with a high degree of unbalance.
  • the invention concerns a compaction roller having at least one rolling body with a vibratory drive which comprises a drivable exciter shaft with an unbalance, said shaft being mounted axially with respect to the rolling body and in said body, the unbalance comprising an unbalance cylinder which is arranged centrally with respect to the axis of the rolling body, is held by the exciter shaft and has an unbalance piston which can be adjusted hydraulically radially with respect to the axis of the rolling body and to which hydraulic fluid can be supplied in a controlled manner from outside by means of an external adjusting device via a bore in the exciter shaft, with infinitely variable adaptation of the nominal amplitude to paving situations, the adjusting device having an actuating cylinder with an actuating piston and a chamber of the actuating cylinder communicating with the unbalance cylinder, wherein the chamber of the actuating cylinder in communication with the unbalance cylinder is connected via a controllable valve to a hydraulic oil source for the purpose of leakage
  • an actuating cylinder is provided whose chamber of the actuating cylinder in communication with the unbalance cylinder is connected via a controllable valve to a hydraulic source for the purpose of leakage oil replacement, which valve shuts in a central or intermediate position between the two end positions of the unbalance piston, from which the nominal amplitude can be increased or reduced.
  • FIG. 1 shows a schematic side view of a tandem compaction roller.
  • FIG. 2 shows a rolling body of the tandem compaction roller of FIG. 1, in section.
  • FIG. 3 shows a detail of FIG. 2.
  • FIGS. 4 a and 4 b show two embodiments of an adjusting device for adjusting the nominal amplitude of the tandem compaction roller of FIG. 1.
  • FIGS. 5 a to 5 c show three different operating settings for an embodiment of the tandem compaction roller of FIG. 1.
  • FIGS. 6 a to 6 c show three different operating settings for a further embodiment of the tandem compaction roller of FIG. 1.
  • the tandem compaction roller shown in FIG. 1 comprises a superstructure 1 with driver's cab, a rolling body 2 and 3 being mounted via steerable swivel couplings 4 at the front and rear underneath said superstructure. Situated between the two rolling bodies 2 , 3 is an engine compartment 5 which houses a drive engine, usually a Diesel engine.
  • a drive engine usually a Diesel engine.
  • the front and/or rear rolling body 2 , 3 comprises two tire halves 6 a , 6 b arranged side by side in the axial direction and a respective radially extending tire endplate 7 with a central through-opening.
  • a respective bearing flange 8 is fastened on the tire endplate 7 .
  • the two tire halves 6 a , 6 b are connected to one another so as to be rotatable about the rolling body axis via the two bearing flanges 8 and a spacer tube 9 , by a bearing 10 , for instance a roller bearing, being arranged between a bearing flange 8 and the spacer tube 9 .
  • the swivel coupling 4 connected steerably to the superstructure 1 is connected elastically on both sides to a respective hollow hydraulic travel motor 12 via damping elements 11 , for example rubber-metal elements, and a flange plate 39 .
  • damping elements 11 for example rubber-metal elements
  • a flange plate 39 On the output side the travel motors 12 are connected via a flange 13 to the adjacent bearing flange 8 and thus drive the respective tire halves 6 a , 6 b.
  • an exciter shaft 14 which is driven by a hydraulic vibration motor 15 and is mounted opposite the bearing flanges 8 via bearings.
  • An unbalance cylinder 16 is mounted centrally in a bore in the exciter shaft 14 .
  • the unbalance cylinder 16 has a corresponding collar and, on the opposite side, a threaded section for clamping by means of a clamping ring and a pair of nuts.
  • the unbalance cylinder 16 accommodates an unbalance piston 17 such that it can be adjusted hydraulically radially with respect to the rolling body axis.
  • the unbalance in the exciter shaft 14 which is sufficient to achieve the smallest nominal amplitude of the rolling body, can be added in an infinitely variable manner.
  • the unbalance piston 17 may be filled with lead in order that where there is minimal construction space as large an adjustment range as possible for the nominal amplitude can be achieved.
  • the unbalance piston 17 is equipped with guide bands and a piston sealing ring. Deformations of the exciter shaft 14 (bending caused by centrifugal forces) are not transmitted to the unbalance cylinder 16 , as a result of sufficient play.
  • the required amount of oil for displacing the unbalance piston 17 is made available through a bore 18 in the exciter shaft 14 .
  • the oil pressure is transmitted to the head of the piston via a taper of the unbalance piston 17 and bores 19 .
  • the required oil volume for changing the position of the unbalance piston 17 using the adjusting piston 34 and its piston rod 30 is modified on the piston rod side by a variable oil volume.
  • electromagnets of a 3/3-way valve 35 are activated cyclically in such a way that the adjusting piston 34 can be displaced by very small distances.
  • the adjusting piston 34 moves in the piston side direction and when tank-connected, because of the centrifugal force of the unbalance piston 17 , in the piston rod side direction.
  • the locking zero position of the 3/3-way valve 35 here replaces the self-locking action of the screw drive 31 of FIG. 4 a .
  • the sole function of the adjusting piston 34 with piston rod 30 here is incremental travel measurement for the purpose of setting the eccentricity of the unbalance piston 17 or the nominal amplitude.
  • the calibration and leakage oil compensation correspond to those of FIG. 4 a.
  • FIGS. 5 a to 5 c depict various positions of the unbalance piston 17 in combination with an adjusting device according to FIG. 4 a (the same applies to the adjusting device of FIG. 4 b ).
  • the unbalance piston 17 is in the position shown in FIG. 5 a during the following four operating states:
  • the unbalance piston 17 is in the position shown in FIG. 5 b only with the nominal amplitude set manually or automatically to maximum and with minimum operating frequency.
  • the 2/2-way valve 33 is here connected to flow and the oil pressure corresponds to the inlet pressure of the directional valve. In this operating state, leakage oil can be replaced and the system calibrated. As soon as the adjusting piston 34 has reached the position of FIG. 5 b , the 2/2-way valve 33 is immediately automatically closed. The nominal amplitude from this operating state can subsequently be reduced in an infinitely variable manner.
  • the operating frequency is subject to follow-up control in the direction of smaller nominal amplitude, for example by means of characteristic map control, to avoid exceeding the permissible centrifugal force of the unbalance piston 17 .
  • the vibration frequency is matched to the nominal amplitude, as described above. It is possible at the same time to automatically set the optimum rolling speed as a function of the vibration frequency and for this to be displayed to the roller driver.
  • the position of the unbalance piston 17 can either be adjusted manually or automatically controlled as a function of the density (stiffness) of the ground.
  • tandem vibratory rollers it is possible for either only the front or only the rear or for both rolling bodies 2 , 3 to be fitted with an unbalance which can be adjusted in the manner described above.
  • a directional valve 35 is provided instead of the hydraulic motor 32 of FIGS. 5 a to 5 c , this valve being connected to the chamber of the actuating cylinder 34 on the piston rod side while the directional valve 33 , in this case a three-way valve, is again connected to the chamber of the actuating cylinder 40 upstream of the adjusting piston 34 .
  • the unbalance cylinder 16 is filled up with oil from the hydraulic source via a pump 37 .
  • the directional valve 33 is connected as shown in FIG. 6 a .
  • a pressure-limiting valve 36 is connected to the line from the pump 37 to the directional valve 33 . If said valve 36 responds, this means that the unbalance cylinder 16 is completely filled with oil.
  • the directional valves 33 , 35 are closed and the vibration can be switched on, FIG. 6 c . If then a certain frequency, for example 28 Hz, is reached, the amplitude is adjusted from the position of smallest amplitude shown in FIG. 6 c by corresponding opening of the directional valve 35 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
US10/382,440 2002-03-07 2003-03-06 Compaction roller Abandoned US20030223817A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10210049.7 2002-03-07
DE10210049A DE10210049B4 (de) 2002-03-07 2002-03-07 Verdichtungswalze

Publications (1)

Publication Number Publication Date
US20030223817A1 true US20030223817A1 (en) 2003-12-04

Family

ID=27740680

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/382,440 Abandoned US20030223817A1 (en) 2002-03-07 2003-03-06 Compaction roller

Country Status (5)

Country Link
US (1) US20030223817A1 (ja)
EP (1) EP1342849B1 (ja)
JP (1) JP4203725B2 (ja)
CN (1) CN100529263C (ja)
DE (2) DE10210049B4 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110158745A1 (en) * 2009-12-31 2011-06-30 Caterpillar Paving Products Inc. Vibratory system for a compactor
CN113846540A (zh) * 2021-10-22 2021-12-28 李亚辉 一种道路桥梁工程路面修复装置
CN115369720A (zh) * 2022-07-29 2022-11-22 许慧保 一种无极变频定向液压振动压路机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030628B4 (de) * 2006-07-03 2021-03-04 F. Weyhausen Ag & Co. Kg Maschinenfabrik Vorrichtung zur Verdichtung eines Baugrundes
CN105268621B (zh) * 2015-11-11 2018-06-05 王存伟 无级变幅振动器
DE102021200285A1 (de) 2021-01-14 2022-07-14 Robert Bosch Gesellschaft mit beschränkter Haftung Verdichtungsfahrzeug, bei welchem ein Fahrantrieb und eine Vibrationseinheit von einer gemeinsamen Versorgungstelle her mit Druckfluid versorgt werden
CN115157717B (zh) * 2022-06-29 2024-02-09 中化工程沧州冷却技术有限公司 一种冷却塔用玻璃钢管道的生产工艺

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059483A (en) * 1960-05-31 1962-10-23 Continental Oil Co Vibrator with hydraulically controlled eccentricity
US3656419A (en) * 1969-04-01 1972-04-18 American Hoist & Derrick Co Vibratory roller
US4105356A (en) * 1977-05-19 1978-08-08 Koehring Corporation Vibratory roller
US4586847A (en) * 1984-02-10 1986-05-06 Raygo, Inc. Vibratory mechanism
US4759659A (en) * 1987-07-01 1988-07-26 Fernand Copie Variable vibrator system
US6386794B1 (en) * 1999-07-13 2002-05-14 Bitelli Spa Perfected vibrating drum for soil tamping machines
US6409425B1 (en) * 1999-10-28 2002-06-25 Sakai Heavy Industries, Ltd. Hand guided vibrating roller
US6460006B1 (en) * 1998-12-23 2002-10-01 Caterpillar Inc System for predicting compaction performance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE426719B (sv) * 1980-12-03 1983-02-07 Thurner Geodynamik Ab Forfarande och anordning for packning av ett materialskikt
DE4129182A1 (de) * 1991-09-03 1993-03-04 Bomag Gmbh Verdichtungsgeraet
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
FI107365B (fi) * 1998-04-27 2001-07-13 Nokia Mobile Phones Ltd Menetelmä ja järjestelmä muuttuvan datankäsittelyn ilmaisemiseksi tiedonsiirtoyhteydessä
DE10031617A1 (de) * 2000-06-29 2002-01-17 Wacker Werke Kg Vibrationserreger mit Amplitudenverstellung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059483A (en) * 1960-05-31 1962-10-23 Continental Oil Co Vibrator with hydraulically controlled eccentricity
US3656419A (en) * 1969-04-01 1972-04-18 American Hoist & Derrick Co Vibratory roller
US4105356A (en) * 1977-05-19 1978-08-08 Koehring Corporation Vibratory roller
US4586847A (en) * 1984-02-10 1986-05-06 Raygo, Inc. Vibratory mechanism
US4759659A (en) * 1987-07-01 1988-07-26 Fernand Copie Variable vibrator system
US6460006B1 (en) * 1998-12-23 2002-10-01 Caterpillar Inc System for predicting compaction performance
US6386794B1 (en) * 1999-07-13 2002-05-14 Bitelli Spa Perfected vibrating drum for soil tamping machines
US6409425B1 (en) * 1999-10-28 2002-06-25 Sakai Heavy Industries, Ltd. Hand guided vibrating roller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110158745A1 (en) * 2009-12-31 2011-06-30 Caterpillar Paving Products Inc. Vibratory system for a compactor
CN113846540A (zh) * 2021-10-22 2021-12-28 李亚辉 一种道路桥梁工程路面修复装置
CN115369720A (zh) * 2022-07-29 2022-11-22 许慧保 一种无极变频定向液压振动压路机

Also Published As

Publication number Publication date
EP1342849A2 (de) 2003-09-10
EP1342849A3 (de) 2004-12-01
JP2004003296A (ja) 2004-01-08
EP1342849B1 (de) 2008-07-02
CN100529263C (zh) 2009-08-19
DE10210049A1 (de) 2003-10-09
DE10210049B4 (de) 2004-03-25
CN1445415A (zh) 2003-10-01
DE50310053D1 (de) 2008-08-14
JP4203725B2 (ja) 2009-01-07

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AS Assignment

Owner name: ABG ALLGEMEINE BAUMASCHINEN-GESELLSCHAFT MBH, GERM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STELBRINK, RICHARD;WACHSMANN, STEFFEN;REEL/FRAME:014256/0415

Effective date: 20030618

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION