EP3258013A1 - Rouleau de compactage d'asphalte, en particulier rouleau à pneu et procédé de pulvérisation d'un rouleau à pneu de compactage d'asphalte - Google Patents

Rouleau de compactage d'asphalte, en particulier rouleau à pneu et procédé de pulvérisation d'un rouleau à pneu de compactage d'asphalte Download PDF

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Publication number
EP3258013A1
EP3258013A1 EP17000988.0A EP17000988A EP3258013A1 EP 3258013 A1 EP3258013 A1 EP 3258013A1 EP 17000988 A EP17000988 A EP 17000988A EP 3258013 A1 EP3258013 A1 EP 3258013A1
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EP
European Patent Office
Prior art keywords
liquid
roller
tank
pump
mixing
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.)
Granted
Application number
EP17000988.0A
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German (de)
English (en)
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EP3258013B1 (fr
Inventor
Christian Berg
Tobias SCHÖNBERG
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Bomag GmbH and Co OHG
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Bomag GmbH and Co OHG
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Application filed by Bomag GmbH and Co OHG filed Critical Bomag GmbH and Co OHG
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    • 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
    • E01C19/002—Apparatus for preparing and placing the materials and for consolidating or finishing the paving
    • 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
    • E01C19/27—Rollers therefor; Such rollers usable also for compacting soil with elastically-deformable rolling elements, e.g. pneumatic tyres
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/16—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 distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
    • E01C19/17—Application by spraying or throwing
    • E01C19/178—Elements or attachments for spreading-out or smoothing-down the applied material, e.g. brushes
    • 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
    • E01C19/238—Wetting, cleaning or heating rolling elements, e.g. oiling, wiping, scraping
    • 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
    • E01C19/29—Rolling apparatus adapted to apply a rolling pressure less than its weight, e.g. roller finishers travelling on formrail combined with spread-out, strike-off or smoothing means; Rolling elements with controlled penetration or a controlled path of movement in a vertical plane, e.g. controlled by the formrails, by guides ensuring a desired configuration of the rolled surface
    • 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
    • E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4806—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
    • E01C19/4813—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being simultaneously but separately applied binders and granular or pulverulent 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/16—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 distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
    • E01C19/17—Application by spraying or throwing
    • E01C19/172—Apparatus with discharge by surpressure in tank
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
    • E01C19/185—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect for both depositing and spreading-out or striking-off the deposited mixture

Definitions

  • the present invention relates to a roller for asphalt compaction, in particular a rubber wheel, with a rubber wheel and a spraying device for spraying the rubber wheel with a release agent mixture and a method for spraying a rubber wheel of an asphalt compaction roller, in particular a Gummiradwalze, with a release agent mixture.
  • Such self-propelled rollers usually comprise a machine frame or a chassis, a chassis, at least one rubber wheel, a water tank and a driver's cab or a driver's cab, preferably with rollover protection. They also have a main drive motor, which is regularly an internal combustion engine, such as a diesel engine.
  • the rubber wheel roller belongs to the group of static rollers and causes by their weight alone a compaction of a substrate or floor covering.
  • An essential feature of a rubber wheel roller are the rubber wheels, which are usually suspended individually and compact with the help of their Walk and Knet Angel the ground.
  • rollers for asphalt compaction having at least one rubber wheel used in the compaction process.
  • rollers to provide for asphalt compaction with a metal bandage and at least one rubber wheel are also referred to as combination rolls.
  • An example of such a roll is the model BW 138 AC-5 of the applicant.
  • a "pure" Gummiradwalze is for example the model BW 27 RH of the applicant, which has exclusively rubber wheels for asphalt compaction. Insofar as information is thus provided below for the formation of the roller, this applies in particular to rubber-wheeled rollers, in particular those which have exclusively rubber wheels.
  • the release agent mixture is typically an emulsion formed from a release agent concentrate, often organic in nature, and water.
  • a known release agent concentrate is known, for example, under the name “BOMAG Bitumentrennstoff” or “BOMAG Separating Agent” or the trade name “BITU-TRENNKONZENT.GRÜN (Bomag)".
  • responsible for the release agent mixture is usually a roller guide that fills the release agent mixture in a machine-fixed tank.
  • the roller guide to pay attention to the correct mixing ratio between water and release agent concentrate, as this depends on the one hand by the particular application for which the roller is currently provided, and on the other hand from the particular release agent concentrate used.
  • the invention proposes to provide a first liquid, preferably water, in a first tank and a second liquid, preferably a release agent concentrate in a second tank separately on the roller for asphalt compaction, in particular the rubber wheel.
  • the release agent concentrate is concretely generally a liquid comprising, for example, oil, in particular vegetable oils, and at least one additive, for example an emulsifier. Release agent concentrates per se are known.
  • the release agent mixture is thus mixed continuously over the working process on the roller in situ from the first and the second liquid. Accordingly, it is avoided by means of the roller according to the invention that after operation of the roller, a considerable remainder of release agent mixture remains in the roller. As a result, it is possible to prevent the reuse of the roller due to ignorance of the present mixing ratio, the release agent mixture still present in the roller must be disposed of. In addition, the re-use ratio can be accurately adjusted regardless of knowledge about the previous applications of the roller. Furthermore, the use of a first tank and a second tank allows a more flexible operation, since the first tank or second tank can be designed differently in terms of their size.
  • a capacity of the second tank is less than a capacity of the first tank, preferably less than half the capacity of the first tank, and more preferably less than one quarter of the capacity of the first tank.
  • the receiving volume ratio of the first tank to the second tank is therefore particularly preferably greater than 10: 1 and very particularly greater than 15: 1. Because of the smaller capacity, the second tank can be emptied faster and thus more flexibly or exchange its contents faster than is the case for a tank, which is provided for the release agent mixture according to the prior art. This makes the roller according to the invention more flexible in its operation, for example with regard to a change of the release agent concentrate. In addition, eliminates the previously required before the operation of mixing the release agent mixture.
  • a first pump for conveying a first liquid from the first tank to the mixing device and / or a separate second pump for conveying the second liquid from the second tank to the mixing device are provided.
  • the two liquids are thus particularly preferably conveyed via their own pump to the mixing device.
  • the roll for providing the first liquid comprises a first feed line which connects the first tank to the mixing device, and / or a second feed line which connects the second tank to the mixing device for providing the second liquid.
  • the first supply line and / or the second supply line preferably has a filter.
  • the filter can be advantageously remove foreign matter from the first or the second liquid before they reach the mixing device or any pumps. This has a positive effect on the life or functionality of the mixing device or a filter downstream of the pump.
  • a connecting line to the spray device is also provided, via which the release agent mixture produced can be applied to the at least one wheel.
  • no filter is preferably arranged.
  • the first and the second pump are ideally arranged in each case between the first or second tank and the mixing device.
  • a mixing device herein means a functional set of components that provide for combining the first liquid and the second liquid, for mixing the first liquid and the second liquid to form the release agent mixture, and for providing the release agent mixture at an outlet of the mixing device.
  • the mixing device is to, preferably via separate line connections, connected to the first and the second tank.
  • the mixing device ideally comprises a chamber, in particular a tubular chamber, in which the first liquid and the second liquid are mixed together.
  • a mixing tool in particular within the chamber, is present, for example a water jet pump or a static mixer, with which a mixing of the two liquids is improved.
  • the first liquid and the second liquid are preferably introduced into the chamber via a first opening and a second opening or a common opening.
  • the chamber has an outlet at the end which forms the outlet of the mixing device and to which the release agent mixture for the spray device is provided.
  • the mixing device is part of the spray device or forms a coherent module with it.
  • the spraying device directly adjoins the mixing device or that the mixing device is arranged in the engine compartment in the vicinity of the first tank and / or the second tank. To bridge any distance between the spray device and the mixing device, these are in particular connected to one another via a common supply line, via which the release agent mixture is guided from the mixing device to the spray device.
  • the roll in principle, it is also possible for the roll to comprise a plurality of mixing devices, for example for a forward-facing and a forward-downstream spraying device.
  • the mixing device provided that the roller has a plurality of spray devices, for example for different rubber wheels, supplies all the spray devices together with release agent mixture.
  • spraying bars are preferably provided as the spraying device which extend over one or more rubber wheels along a wheel axle, for example. It is preferably provided that the spray bar one or more outlet openings, preferably regularly, in particular equidistant, distributed along the wheel axle outlet openings. Preferably, the spray bar comprises one or more spray nozzles as outlet openings, wherein the spray nozzles are aligned such that their respective spray cone strikes at least and preferably exactly one or two rubber wheels. Furthermore, in a preferred embodiment it is provided that two spray bars are arranged via a front wheel axle viewed in the direction of travel (when driving forwards), while a single spray bar is arranged along a rear wheel axle viewed in the direction of travel (when driving forwards).
  • the release agent mixture refers to any liquid that is capable of reducing the chance of sticking of flooring to the rubber wheel or loosening the flooring from the rubber wheel. It is preferably provided that the release agent mixture, an emulsion, preferably a macroemulsion (droplet diameter> than 1 ⁇ m), mini-emulsion (droplet diameter in the range of a ⁇ m or a nano-emulsion (droplet diameter is ⁇ 100 nm).
  • a macroemulsion droplet diameter> than 1 ⁇ m
  • mini-emulsion droplet diameter in the range of a ⁇ m or a nano-emulsion (droplet diameter is ⁇ 100 nm.
  • BITU-TRENNKONZENT.GRÜN (Bomag) used release agent concentrate.
  • the mixing device has a regulating device for setting a mixing ratio in the release agent mixture between the first liquid and the second liquid.
  • the roller guide can easily change or adapt the mixing ratios between the first and the second fluid.
  • the regulating device may comprise, for example, a mechanical, electrical and / or radio-controlled first actuating element, via which the roller driver can set and change the mixing ratio predetermined by the regulating device.
  • this first actuating element is arranged in the driver's cab and / or in a side wall area accessible from outside the roller. It is ideal if the regulating device can be controlled during operation.
  • the regulating device is actuated during operation in order to keep the mixing ratio in the release agent mixture constant.
  • This can be counteracted by means of the controllable regulating device, for example, the circumstance that with increasing temperature, the viscosity of the first and the second liquid change differently and so the amount of supplied amount of first liquid and second liquid by any temperature fluctuations during operation, in particular in a period immediately after commissioning of the roll, occur or by Temperature fluctuations in the environment, unintentionally influenced.
  • the regulating device preferably designates a device with which an amount of first and / or second liquid provided to the mixing device can be controlled and with which the mixing ratio between first liquid and second liquid can be adjusted.
  • the regulating device is one or more valves or one or more fine regulating valves.
  • the amount of first liquid and / or the amount of second liquid can be controlled by means of a pump, in particular a variable displacement pump.
  • An essential element of the regulating device is a control device which controls the first and / or the second pump.
  • the controller may be part of a control loop that automatically adjusts the amount of first or second liquid provided to the mixing device to provide a mixed ratio release agent mixture during operation.
  • the control device thus preferably designates a control arrangement with control electronics in contrast to a purely mechanical solution. It can be provided, for example, that the control device, the first (preferred) and / or the second pump at intervals on and off. A dosage of the delivery volume is thus carried out via a change in the on and off intervals of the pump. However, when the pump is switched on, it promotes a substantially constant volume over the switched-on period.
  • control device may also (preferably) control the first and / or the second pump in such a way that its delivery volume is varied in the switched-on state. This can be done for example by adjusting the angular position of a swash plate, etc.
  • the pump can thus be operated continuously and at the same time a change in the delivery volume can be achieved.
  • the mixing ratio is thus achieved by a corresponding control of the two pumps by the control device according to the invention.
  • the control device for controlling the regulating device with a first actuating element in particular with a first actuating element arranged in a driver's cab of the roller, and / or for setting an operating mode of the spray device with a second actuating element, in particular with a arranged in the cab of the roller second actuator is connected.
  • the first and / or second actuating element is a switch, in particular a rotary or toggle switch, or a keypad. It is also conceivable that the first and / or second actuating element is integrated in a touch display.
  • an interval mode is preferably provided as a further operating mode during operation of the rubber roller in which the rubber wheel is sprayed with the release agent mixture for a first time interval and the spraying of the rubber wheel during a second time interval is interrupted. This is set in particular via the second actuating element and the mixing ratio of the two liquids via the first actuating element. Both actuators are connected to the control device.
  • the roller has the first pump for conveying the first fluid from the first tank to the mixing device and / or the second pump for conveying the second fluid from the second tank to the mixing device, both of which are controlled by the control device.
  • the first pump or the second pump advantageously ensure that the first liquid or second liquid are conveyed to the mixing device. It may be provided that the two liquids are brought together in the conveying direction before the mixing device or only be combined in the mixing device itself.
  • the first pump is designed to generate a first volume flow, for example 3.8 l / min
  • the second pump is designed to generate a second volume flow, for example between 0.2 l / min and 0.95 l / min
  • the first and / or second pump are designed as a variable displacement pump, in particular with variable displacement volume, and in this way contribute to setting the mixing ratio of the first and / or second pump.
  • the first and / or the second pump are designed as constant pumps and a change in the delivery volume over the on and off intervals occurs during interval operation.
  • the first pump and / or the second pump for example, a peristaltic pump, a gear pump or a diaphragm pump.
  • the use of a cost peristaltic pump also proves to be advantageous in that it has a low influence on the viscosity and is relatively robust, since the first liquid or the second liquid has only contact with the hose.
  • a gear pump advantageously causes a comparatively low pulsation, while a diaphragm pump is comparatively favorable.
  • a pump of the same type of construction is used as the first pump and as the second pump. It is particularly preferred if the first and / or the second pump are connected to the electrical system of the roller for electrical power supply.
  • the second tank and the rest of the roller are detachably connected to each other via a coupling device.
  • a coupling device such as a reversibly detachable connection between the second tank and the roller also allows replacement of the second tank with another liquid containing another liquid, such as another release agent concentrate, or a second "filled" tank. This can be done by simply replacing the second tank in a straightforward way, a change of the release agent concentrate or a "replenishment".
  • This can be, in particular, the distributed trade container, such as a canister, so that it is possible to dispense with suitable special tanks.
  • it may be provided for removal that the connection via an immersion lance for suction or the like.
  • the lid of the retail package can be designed according to the removal.
  • a coupling device is to be understood in particular as one with which a change between a connected state and a non-connected state can be repeated in the same way and thus reversibly.
  • the coupling device preferably has tank-side and roller-side coupling elements, which, for example, positively and / or frictionally engage one another in the connected state.
  • a fixing element such as a belt, a holding cup or a bolt, ensures the temporary coupling between the roller and the second tank.
  • a Entrastschi or rotary motion is provided, for example, a bayonet closure, with the engagement between the Coupling elements is released.
  • the coupling device can be operated without tools or purely manually from a released to a securing position and vice versa.
  • the second tank preferably comprises a connection element which can be connected to an opening in the second supply line in such a way that the second liquid can pass from the second tank into the second supply line.
  • the roller has a drain for discharging the second liquid from the second tank. This allows the second liquid to be removed from the second tank as needed and to ensure that the second liquid does not freeze when the roll is not in use.
  • a leakage protection is provided in the outlet of the second tank.
  • This leakage protection is characterized in that it automatically closes the outlet of the second tank when the coupling device or the line connection of the second tank is released to the line system to the mixing device, or opens when the second tank is connected to the coupling device.
  • this can be used, for example, quick couplings whose operating principle, for example, in the DE2653976A1 is illustrated.
  • the second tank is arranged within a lining, in particular outer lining, of the roll.
  • the tank is mounted on an inside of the panel or chassis. This makes it possible to realize a stable arrangement in an advantageous manner by the second tank rests with at least one of its side walls on the inside of the panel surface.
  • the second tank is arranged in the engine compartment of the roller or in the region of the wheel house. Due to the arrangement in the region of the wheel well, easy access to the second tank - for example for the discharge of the second liquid - from outside the machine is advantageously possible.
  • the second tank is arranged outside the engine compartment, in particular below the driver's cab. With such an arrangement can be advantageously minimize a temperature influence by the engine on the second liquid and thus on the viscosity of the second liquid.
  • the second tank is, for example, on an outer panel the roller attached from the outside and therefore arranged easily accessible from the outside.
  • the second tank is arranged on a hood of the roller, in particular next to the first tank or next to a water tank.
  • the second tank engages in a recess in the outer lining and is there arranged non-slip because of a positive interaction with the recess.
  • the attached to the outer lining second tank has a viewing window, with the help of the roller guide directly obtains information about a level of the second tank.
  • a water jet pump or a static mixer are preferably provided. Basically usable, however, even if associated with a higher installation effort, moving or even driven mixing devices, such as propellers. If a water jet pump is used, a pump in the second supply line can advantageously be dispensed with, since the second liquid is sucked in by the negative pressure prevailing in the water jet pump. In addition, remain when using the water jet pump substantially no remnants of release agent mixture, which would have to be removed after operation or before restarting the roller again from the mixing device.
  • a static mixer usually comprises a pipe section and a flow-influencing mixing element arranged in this pipe section.
  • Known static mixers are known, for example, under the designations Kenics mixer and Sulzer SMV / SMX mixer.
  • a static mixer can be discussed in an advantageous manner to the physical properties of the first and the second liquid.
  • a lattice mixer favors the mixing of liquids with a comparatively high viscosity.
  • Another advantage of using a static mixer is that the mixing process can be performed as controlled as possible.
  • the static mixer is preferably connected to a drain for discharging the release agent mixture from the static mixer.
  • the mixing device comprises a stirring tool to assist the mixing process.
  • the respective measuring device is either integrated directly into a line section and / or a separate measuring line, for example in the form of a bypass line, is provided.
  • the object is also achieved by a method for spraying a rubber wheel of a roller for asphalt compaction, in particular a roller according to the preceding embodiments. All features and advantages described for the roller according to the invention can be analogously also transferred to the inventive method and vice versa.
  • the inventive method for spraying a rubber wheel of the roller comprises, in particular demand-dependent, mixing a first liquid and a second liquid to form a release agent mixture in the mixing device and then spraying the at least one rubber wheel with the release agent mixture provided by the mixing device.
  • the first liquid in a first tank and the second liquid are provided in a second tank, wherein the first and the second tank are mounted or arranged in the operation of the roller.
  • a demand-dependent mixing is to be understood in particular as such mixing in which the mixture of first liquid and second liquid is mixed only during operation of the roll and preferably immediately before spraying depending on the current needs.
  • a mixing process in the mixing device and a spraying pass of the release agent mixture by means of the spray device less than 40 s, preferably less than 10 s and more preferably less than 5 s.
  • a quantity of first liquid or second liquid provided to the mixing device is adjusted by means of a regulating device.
  • the mixing device provided amount of first and / or second liquid by means, in particular in each case, a pump, in particular a variable displacement pump or in a manner described above, is set.
  • a control device of the regulating device which controls the operation of the two pumps during operation Roller controls.
  • both the first and second pumps are preferably independently controlled by the controller to provide the desired mixing ratio between the first and second fluids.
  • the regulating device during operation of the roller in particular in dependence on a viscosity or temperature of the second fluid, is pressed.
  • the release agent mixture does not lose its effect during operation due to a changed mixing ratio.
  • an ambient temperature has changed between two inserts of the roller and by means of the regulating device a variation of the mixing ratio caused thereby is counteracted.
  • the regulating device or the entire spraying device can also be operated as a function of a temperature of at least one rubber wheel or its surface and / or as a function of a temperature of the asphalt to be compacted and / or a temperature of the outside environment.
  • This also applies in particular to the automatic startup and / or the automatic switching off of the spray device and / or the changing of the mixing ratio of the first and the second liquid in the release agent mixture by the mixing device as a function of exceeding or falling below specified temperature threshold values.
  • the second liquid is discharged from the second tank or the second tank, in particular completely, is released from the roll .
  • the second tank is released from the roll and is replaced by another second tank with a further second liquid.
  • the tank is preferably the trading container, for example, a conventional canister.
  • FIG. 1 is a generic roller 1, specifically a rubber roller 1, in particular a self-propelled rubber roller 1, with a chassis 52, a driver's cab or a driver's cab 50, rubber wheels 2 and a motor 51 shown in a side view.
  • the in the Fig. 1 and in the other figures illustrated rubber wheels 1 are representative of generally rollers 1 for asphalt compaction, especially so-called combination rollers to understand.
  • the front wheels are recognizable.
  • both front and rear four rubber wheels 2 are arranged side by side, the front rubber wheels are arranged in known manner in the art in the direction of travel on the gap to the rear rubber wheels 2.
  • Such rubber tyred rollers 1 are typically intended for compacting in road construction, during operation they travel over a floor covering to be compacted.
  • a kneading and whetting effect emanating from the rubber wheels 2 in this case leads to a homogeneous compaction and a pore closure on a surface of a layer of the floor covering to be compacted.
  • During operation ie when compacting the floor covering, it happens regularly that to be compacted flooring adheres to the rubber wheels 2 and is carried, with such a tendency of the rubber wheel 2 material also significantly dependent on the temperature of the rubber wheel 2.
  • An adhesion of the floor covering takes place in particular at low temperatures of the rubber wheels, which prevail, for example, immediately after commissioning of the rubber wheel 2.
  • a release agent mixture 10 which is sprayed onto the rubber wheel 2 or all of the existing rubber wheels 2 via a spray device 70.
  • a release agent mixture 10 is composed in particular of at least one first liquid 11, preferably water, and at least one second liquid 12, preferably a release agent concentrate.
  • the FIGS. 2 to 4 show embodiments of systems that are provided for mixing the two liquids and for spraying the rubber wheels 2.
  • FIG. 10 is a system for spraying a rubber wheel 2 for a rubber wheel 1 according to a first exemplary embodiment of the present invention.
  • a first tank 21 for the first liquid 11 a second tank 22 for the second liquid 12 and a mixing device.
  • the mixing device By means of the mixing device, the first liquid 11 and the second liquid 12 are mixed to the release agent mixture 10 and then passed as a release agent mixture via a common line to a spray device 70.
  • the spray device 70 is a spray bar 71 which extends horizontally and transversely to the working direction over the front or rear rubber wheels and to which spray nozzles 72, preferably individually adjustable spray nozzles 72, are arranged at regular intervals. These spray nozzles 72 are preferably directed towards the rubber wheel 2 or oriented so that their spray cone hits the rubber wheel 2.
  • spray devices 70 such as those which instead of spray nozzles 72 have simple outlet openings, are also possible and encompassed by the invention.
  • a water jet pump 5 is provided as a mixing device, which allows the first liquid 11 and the second liquid 12 can be mixed with each other as needed.
  • the first tank 21 are connected to the first liquid 11 via a first supply line to the mixing device and the second tank 22 to the second liquid 12 via a second supply line to the mixing device.
  • the water jet pump 5 in this case has in particular two inputs and one output.
  • a jet encompassing the first liquid 11 passes from a nozzle into a pipe of larger diameter under the highest possible line pressure.
  • the second liquid 12 receives from the second supply line, in particular because of the negative pressure prevailing in the tube, access to the tube with a larger diameter. Friction causes turbulence between the rapidly flowing jet of the first liquid 11 and the medium in the tube containing the second liquid 12, thereby mixing the first liquid 11 and the second liquid 12.
  • An advantage of using a water jet pump 5 is that none Residues remain from the composite release agent mixture 5 in the system or in the mixing device.
  • the second supply line has a regulating device in the form of a valve 3 and a fine regulation valve 4.
  • a change in the mixing ratio which is caused by temperature changes during startup of the rubber wheel or temperature changes in the vicinity of the rubber wheel 1, can be counteracted.
  • Such a change of the mixing ratio is to be expected, for example, if the first liquid 11 and the second liquid 12 have different temperature dependencies with regard to their viscosity and, as a result of a temperature change, the respective quantity of first liquid 11 and second liquid 12 fed to the mixing device change differently and so the mixing ratio is modified unintentionally.
  • the mixing ratio can be adjusted depending on the situation on the respective need for second liquid 12 or depending on the particular application for the rubber wheel 1 via the regulating device during operation of the rubber wheel.
  • the first supply line ie usually the water supply line
  • the first supply line as part of a regulating device
  • the filter 7 By means of the filter 7, the first liquid 11 supplied to the mixing device can advantageously be freed from unwanted foreign bodies.
  • a first pump 13 ' in particular a water pump, integrated, with which the required for the water jet pump pressure in the first line can be realized.
  • the filter 7 is arranged between the valve 3 and the water pump 5.
  • a pressure regulating device is furthermore provided, which in the illustrated embodiment is realized by a bypass bypassing the pump 13 ', wherein the bypass is a check valve with spring 6 ' having.
  • the system pressure is regulated purely in the water cycle.
  • Both the valves 3 and the pump 13 ' are controlled by a control device 60 via suitable control lines.
  • the control device 60 controls, for example, the open and closed positions of the valves 3 and / or the operation of the pump 13 ', for example with regard to startup and shutdown intervals and / or the delivery volume.
  • the set of valves 3, pump 13 ', control device 60 and control lines forms the regulating device. This receives operating instructions from the operator via appropriate actuation means, such as in Fig. 4 illustrated in more detail.
  • Fig. 10 is a system for spraying a rubber wheel 2 for a rubber wheel 1 according to a second exemplary embodiment of the present invention.
  • the second tank 22 is designed as a pressure tank 22 '.
  • the tank 22 can thus be placed under an overpressure against the outside environment.
  • the second liquid 21 is pressurized in the second tank 22 by means of compressed air from a compressed air reservoir 31, thus causing the transport of the second liquid 12 to the mixing device.
  • Means of a controlled by the controller 60 pressure reducing valve 32, which is interposed between the compressed air reservoir 31 and the pressure tank 22 ', can be a preferred pressure, for example, between 1.5 and 2 bar set.
  • the second supply line which connects the second tank 22 to the mixing device, furthermore preferably comprises, as part of the regulation device, a 2/2-way valve 8, in particular an electrically actuatable 2/2-way valve, and a fine regulation valve 3, to control the mixing ratio between the first Liquid 11 and the second liquid 12 in the release agent mixture 10 depending on the situation and need to adjust or readjust.
  • a 2/2-way valve 8 in particular an electrically actuatable 2/2-way valve
  • a fine regulation valve 3 to control the mixing ratio between the first Liquid 11 and the second liquid 12 in the release agent mixture 10 depending on the situation and need to adjust or readjust.
  • the second supply line between the 2/2 - way valve 8 and the mixing device a check valve without spring 6 ", which prevents the first liquid 11 in the closed state in the second supply line.
  • the first liquid 11 passes, as is known from the first embodiment, via a first supply line with a filter 7 and driven by a first pump 13 'to the mixing device.
  • a bypass bypassing the pump 13 ' is furthermore connected to the first line as a pressure regulating device, the bypass having a check valve with spring 6 ".
  • valves 3, 4 and / or 8 can be carried out manually or in particular also via a suitable control device, which, for example, depending on determined characteristic values, such as temperature, viscosity, etc., corresponding control signals to the valves 3, 4 and /. or 8 are transmitted, controlled.
  • a suitable control device which, for example, depending on determined characteristic values, such as temperature, viscosity, etc., corresponding control signals to the valves 3, 4 and /. or 8 are transmitted, controlled.
  • a static mixer 15 is provided as a mixing device.
  • a static mixer 15 is understood by the person skilled in the art to mean, in particular, a device for mixing fluids in which only the flow movement of the Fluids, in this case the first and the second liquid, which causes mixing and has no moving elements.
  • the static mixer 15 consists of flow-influencing elements which are arranged in a chamber or a mixing tube. These flow-influencing elements alternately divide the material flow and then bring it together again, whereby the mixing is achieved.
  • the flow-influencing elements are, for example, a helical mixer or a lattice mixer.
  • Fig. 10 is a system for spraying a rubber wheel 2 for a rubber wheel 1 according to a third exemplary embodiment of the present invention.
  • the third embodiment as the second embodiment as a mixing device comprises a static mixer 15.
  • the first liquid 11 - as in the second embodiment - via a supply line with a first pump 13 ', in particular a water pump, and a filter 7 to the mixing device ,
  • the first supply line comprises a valve 3 between the filter 7 and the first tank 21.
  • the third embodiment provides, in particular, a second tank 22 having an outlet 25.
  • This drain 25 makes it possible to drain the second liquid 12 from the tank 22 advantageously after operation of the rubber wheel 1. If the second liquid 12 has, in particular, a comparatively low freezing point temperature, freezing of the second liquid 12 in the second tank 22 can thereby be avoided.
  • the common feed line between the static mixer 15 and the spray device 70 additionally or alternatively preferably comprises a drain 25 which allows a discharge or removal of the release agent mixture 10 from the common line and / or the static mixer 15.
  • the bottom side of the second tank 22 tapers in a funnel shape to the drain 25 or the common supply line between the static mixer 15 and spray device 70 downhill, d. H. in the direction of a bottom surface on which the rubber wheel roller stands, runs.
  • the second fluid 12 is conveyed to the static mixer 15 by means of a second pump 13 ", in particular a controllable variable displacement pump, controlled separately from the first pump 13 ', for which purpose such a second pump 13" is in the second Integrated supply line.
  • the second pump 13 is an electrically adjustable variable-displacement pump with the aid of which an electrical input voltage regulates the amount of second liquid 12 which is supplied to the static mixer 15 per unit of time .
  • the variable-displacement pump controlled by the control device forms For controlling, the variable displacement pump is connected to the control device 60.
  • a roller guide can preferably adjust the mixing ratio in the release agent mixture 10 or readjusting, for example, by adjusting an input voltage to the variable displacement pump so that the desired amount of second liquid 12 is provided to the static mixer 15.
  • the first pump 13 'integrated in the first supply line is connected to a second actuation element 62 via the control device 60.
  • an operating mode for the spraying device 70 can preferably be set by the roller guide.
  • the spraying device 70 can be switched on or off via the second actuating element 61 or operated in an interval mode, in particular during the operation of the rubber wheel roller 1.
  • the control device 60 preferably switches on and / or off the first pump 13 'in the first supply line.
  • a bypass line 57 to the pump 13 'and another check valve 6 in the line part behind the bypass line 57 is present to prevent inadvertent promotion of release agent in the water path.
  • either the front and the rear rubber wheels each have a corresponding arrangement is provided. however, it is preferred if the front and rear rubber wheels are wetted together by a system for spraying the rubber wheels with release agent mixture.
  • a venting bypass 57 ' is provided which connects the line section lying downstream of the pump 13' via a valve 3 '(in the present case a 2/2-way valve) to the second tank 12. Via this bypass line it is possible for the pump 13 "to be connected. , For example, after filling and / or insertion of the second tank 12, for venting purposes first depressurized into the tank 12 promotes. If the pump 13 "vented, the blocking of the vent bypass 57 'takes place by means of the valve.
  • FIGS. 5 to 7 show various arrangements of the second tank 22.
  • the second tank 12 in the in FIG. 4 illustrated arrangement in a free space 55, in particular in the region of the wheel well 56, arranged.
  • the frame or the outer panel was partially hidden in the figure.
  • Such an arrangement proves to be advantageous in that it allows free access to the second tank 22 via the clearance between rubber wheel 2 and wheel arch 56 - for example for draining the second fluid 12 - and at the same time the second tank 22 through the fairing of the rubber wheel roller 1 is protected from external environmental influences.
  • the second tank 22 is arranged comparatively close to the spray device 70, whereby installation space and costs for otherwise necessary supply lines can be saved.
  • the second tank 22 is arranged on the outside of the outer lining of the rubber wheel 1 from the outside.
  • the second tank 22 is arranged in an assembled state on or next to a cover of the rubber wheel 1.
  • the second tank 22 is in the mounted state with at least one of its sides flush with a general course of the outer lining.
  • the second tank 22 is temporarily mountable via a coupling device to the rubber wheel roller.
  • the coupling device is a latching or bracing device with which the coupling device can be temporarily or reversibly mounted on the outer lining. This advantageously permits removal and intermediate storage of the second tank 22 when the rubber wheel 1 is not in operation.
  • the second tank 22 comprises a viewing window, which advantageously provides the roller guide with information about the fill level of the second tank 22.
  • the second tank 22 is disposed in a space close to the wheel well or below / next to the water tank and / or the water tank and the driver's cab 50 or below the driver's cab. In such an arrangement, the second tank 22 is protected from external environmental influences.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP17000988.0A 2016-06-13 2017-06-09 Rouleau de compactage d'asphalte, en particulier rouleau à pneu et procédé de pulvérisation d'un rouleau à pneu de compactage d'asphalte Active EP3258013B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016007166.4A DE102016007166A1 (de) 2016-06-13 2016-06-13 Walze zur Asphaltverdichtung, insbesondere Gummiradwalze, und Verfahren zum Besprühen eines Gummirads einer Walze zur Asphaltverdichtung

Publications (2)

Publication Number Publication Date
EP3258013A1 true EP3258013A1 (fr) 2017-12-20
EP3258013B1 EP3258013B1 (fr) 2019-04-17

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US (1) US20170356141A1 (fr)
EP (1) EP3258013B1 (fr)
CN (1) CN107489086B (fr)
BR (1) BR102017012430A2 (fr)
DE (1) DE102016007166A1 (fr)

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EP3492655A1 (fr) * 2017-12-01 2019-06-05 BOMAG GmbH & Co. OHG Rouleau à pneus destiné au compactage d'un sol et procédé de commande d'une installation d'irrigation de surface d'un rouleau à pneus
EP3786361A1 (fr) 2019-08-26 2021-03-03 Hamm AG Compacteur de sol

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JP7005540B2 (ja) * 2019-01-18 2022-01-21 日立建機株式会社 転圧機械
JP7086042B2 (ja) * 2019-09-24 2022-06-17 日立建機株式会社 転圧機械
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Also Published As

Publication number Publication date
CN107489086B (zh) 2020-05-22
BR102017012430A2 (pt) 2018-03-13
DE102016007166A1 (de) 2017-12-14
CN107489086A (zh) 2017-12-19
EP3258013B1 (fr) 2019-04-17
US20170356141A1 (en) 2017-12-14

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