EP2213433A1 - Fahrmischer - Google Patents

Fahrmischer Download PDF

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Publication number
EP2213433A1
EP2213433A1 EP09015502A EP09015502A EP2213433A1 EP 2213433 A1 EP2213433 A1 EP 2213433A1 EP 09015502 A EP09015502 A EP 09015502A EP 09015502 A EP09015502 A EP 09015502A EP 2213433 A1 EP2213433 A1 EP 2213433A1
Authority
EP
European Patent Office
Prior art keywords
truck mixer
electric motor
mixer according
drive
water
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.)
Withdrawn
Application number
EP09015502A
Other languages
German (de)
English (en)
French (fr)
Inventor
Andreas Hüber
Martin Wittig
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.)
Liebherr Mischtecknik GmbH
Original Assignee
Liebherr Mischtecknik 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 Liebherr Mischtecknik GmbH filed Critical Liebherr Mischtecknik GmbH
Publication of EP2213433A1 publication Critical patent/EP2213433A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/421—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/421—Drives
    • B28C5/4213—Hydraulic drives

Definitions

  • the invention relates to a truck mixer with a water system and a water pump for generating the required water pressure in the water system and with other energy consumers.
  • Energy consumers or, in short, consumers who are mounted on the truck mixer are also referred to as additional consumers. These include, in addition to the water system, for example, the chute adjustment, the drum closure, an additive pump for providing additives that change the property of the concrete, and other electrical consumers, such as a camera, work lights or the like.
  • the biggest consumer is the water system. On the one hand, it serves to clean the truck mixer after use and, on the other hand, to improve the fluidity of the mixed material. It can also serve to process dry mix to concrete.
  • a 500 l or a 650 l water tank is provided, which can be filled via appropriate pipelines.
  • the tank is usually mounted by means of a console on the truck mixer gearbox. Schematically, such a structure is in the FIG.
  • a water tank 9 via a main line 11, which is externally mounted on the frame, via a riser, which optionally has a water meter 14 and a strainer 12, connected to an injection nozzle, which projects into the drum of the vehicle mixer.
  • a cleaning hose 16 goes away from the manifold on the main line 11 down.
  • a second injection pipe can be arranged above the inlet funnel.
  • FIG. 1 a compressed air water system is shown in which the pressure is generated via the compressed air connection to the vehicle.
  • a pressure tank 1 is arranged on the vehicle.
  • the compressed air is removed from the compressed air connection of the chassis.
  • protection and safety valves such as the four-circuit protection valve 2 and the overflow valve 3, the systems of the vehicle, such as the brake system, are protected. These systems have priority.
  • the air requirement of the secondary consumers must be checked to avoid damage to the pressure components, such as the compressor and the air dryer.
  • a safety valve 7 and a test port 8 are still present.
  • With 10 two Kugelabsperrschieber for filling the water tank 9 are designated.
  • Kugelabsperrschieber 13 and 15 are provided to turn on the cleaning hose 16 and the injection nozzle in the drum.
  • FIG. 1 illustrated embodiment operates the water system via a water pump, which is driven via the gear of the mixer drum.
  • the mixer gear has an additional connection flange on the side of the main flange.
  • the water tank is not designed here as a pressure tank.
  • the disadvantage is that the pump only promotes when the drum rotates. The delivery volume depends on the speed of the drum. It should be noted that the pump must not be operated with recycled water or water with additives. Furthermore Do not allow the pump to run dry. If there is a risk of frost, the water system must always be emptied, with the ball shut-off valve 10 in accordance with FIG. 1 to open.
  • the water pump can also be switched via hydraulic.
  • a gear pump is flanged, which drives the hydraulic motor.
  • This engine supplies the water pump.
  • the drive is only dependent on the speed of the drive motor of the vehicle, usually a diesel engine. By a valve block this drive is separately switchable.
  • An extension of the hydraulic circuit is necessary for this embodiment. Again, the water system is to dehydrate at the risk of frost.
  • Another drive option is that the water pump is driven by a V-belt drive from a separate motor.
  • the pump is mounted here on a tensioning station.
  • the delivery rate here, however, depends on the engine speed of the engine. All of the aforementioned drive variants show considerable disadvantages in terms of space requirements or the dependence on other operating systems of the truck mixer, so that there are not insignificant restrictions when operating the energy consumer.
  • the object of the invention is to develop a truck mixer such that potential energy consumers of the truck mixer can be used largely independently and as needed.
  • the water pump and / or at least one other consumer is driven by an electric motor in a truck mixer with a water system and a water pump to generate the required water pressure in the water system and with other energy consumers.
  • This embodiment of the invention has a number of advantages over the systems initially shown.
  • the water tank no longer needs to be located at a specific location of the truck mixer. Rather, on the one hand its shape can be chosen freely, so that it can be adapted to Störkonturen the vehicle chassis. Since gravity no longer depends on the water tank, it can be located at a low point of the chassis so that the center of gravity of the entire truck mixer can be lower. As a result, in particular the driving characteristics of the truck mixer and driving safety are improved.
  • a plastic tank can be used and, overall, the water pipes can be shortened.
  • the drive power of the electric motor can be provided via the electrical system of the truck mixer.
  • the drive energy of the electric motor can be provided via an additionally mounted energy source.
  • a controller between the electric motor or the electric motors and the power source.
  • a high-pressure cleaner and / or a linear drive and / or a drum closure and / or a chute adjustment and / or an additive pump can be provided.
  • chute adjustment and the drum closure can be driven by an effective chain of electric motor and hydraulic drive.
  • FIG. 2 a first embodiment of the invention is shown, wherein only a circuit detail is shown here. So here is designated by a water pump 100, which water from a not shown here but not shown on the vehicle mixer arranged water tank and a not shown here water nozzle or other consumer, such as a water hose, can be supplied.
  • the water pump is directly driven by an electric motor.
  • the electric motor will after the in FIG. 2 shown embodiment fed from the electrical system of the chassis of the truck mixer not shown here.
  • a battery 104 is shown, which is powered by a generator 106.
  • the generator 106 is driven by the diesel engine 108, which serves to drive the truck mixer. In the embodiment shown here, the diesel engine 108 serves both to propel the truck mixer and to drive the drum.
  • FIG. 3 a modified embodiment is shown, in which for the drum drive, which is schematically indicated here with 112, a separate drive 110 is provided. This is a drive shaft 114 with the drum drive 112 feeding generator 116 coupled. To the generator and the electric motor 102 is connected, which in turn drives the water pump 100.
  • a further modified embodiment of the invention results from the illustration according to FIG. 4 ,
  • the separate drive 110 is also coupled via a propeller shaft 114 with a generator 116.
  • the generator drives the drum drive 112 and the electric motor 102, which in turn supplies the water pump 100 with electrical energy.
  • upstream of the electric motor 102 is a controller 118 which controls the supply of electrical energy from the generator.
  • a separate drive 110 is initially coupled to a generator 116 via a cardan shaft 114.
  • the generator initially serves to supply the drum drive 112 and is further coupled via a controller 118 to an electric motor 102, which in turn drives a water pump 100.
  • a high-pressure cleaner is additionally connected, which is provided for cleaning the truck mixer.
  • the water pressure on up to 140 bar at 15 I / min is achieved, with the cleaning usually the water at a pressure of 80 bar to 100 bar is retrieved because it shows the best cleaning effect at this pressure.
  • a corresponding pump 120 which serves to pump the water supplied to the high-pressure cleaner, can be connected to the electric motor.
  • a linear drive 122 can be selectively connected to the electric motor.
  • a linear drive 122 can be selectively connected to the electric motor.
  • So are either different consumers 100, 120 and 122 simultaneously or separately from a single electric motor 102 drivable.
  • FIG. 6 one of the embodiment according to FIG. 5 similar version shown, in which again via a drive 110 and a propeller shaft 114, a generator 116 is driven, which serves to supply the drum drive 112 with electrical energy.
  • the generator 116 is connected via a controller 118 to a plurality of consumers.
  • the first consumer first a water pump 100 of the water system not otherwise shown here driven by a separate electric motor 102.
  • the other two consumers are each driven by their own electric motors 102 'and 102 ".
  • the consumer which is driven by its own electric motor 102', is an additive pump 124
  • the additives are agents which are added to the concrete to influence its behavior and have been injected into the mixing drum by means of a pressurized container or by gravity In the embodiment shown here they are driven by the electrically driven additive pump 124 promoted.
  • a hydraulic pump 126 is driven, which in each case further hydraulic consumers are connected via valves 128, 130.
  • the one hydraulic consumer is a chute adjustment 132.
  • the other consumer is the one via the valve 130 connected drum full closure 134.
  • each consumer can be independently powered by its own electric motor, so that can be targeted to the respective drive needs of each consumer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
EP09015502A 2009-01-28 2009-12-15 Fahrmischer Withdrawn EP2213433A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009001045U DE202009001045U1 (de) 2009-01-28 2009-01-28 Fahrmischer

Publications (1)

Publication Number Publication Date
EP2213433A1 true EP2213433A1 (de) 2010-08-04

Family

ID=42126442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015502A Withdrawn EP2213433A1 (de) 2009-01-28 2009-12-15 Fahrmischer

Country Status (5)

Country Link
US (1) US20100188925A1 (zh)
EP (1) EP2213433A1 (zh)
CN (1) CN101786295A (zh)
DE (1) DE202009001045U1 (zh)
RU (1) RU2561411C2 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103158677A (zh) * 2011-12-19 2013-06-19 北汽福田汽车股份有限公司 用于工程机械的清洗系统及具有其的工程机械
DE102012012619A1 (de) * 2012-06-26 2014-01-02 Liebherr-Elektronik Gmbh Vorrichtung und Verfahren zur elektrischen Energieversorgung einer industriellen Anlage
EP3023212A1 (en) * 2014-11-24 2016-05-25 Cifa S.P.A. Vehicle to project concrete
CN111546501A (zh) * 2020-04-29 2020-08-18 德清高盛交通科技有限公司 一种绞笼式砂浆罐水量调节方法、系统、装置及存储介质

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009001416U1 (de) * 2009-02-05 2010-06-24 Liebherr-Mischtechnik Gmbh Trommelantrieb für einen Fahrmischer
JP5798771B2 (ja) * 2011-03-24 2015-10-21 カヤバ工業株式会社 ミキサドラム駆動装置
US8911138B2 (en) * 2011-03-31 2014-12-16 Verifi Llc Fluid dispensing system and method for concrete mixer
EP2719510B1 (en) * 2012-10-11 2019-05-08 Mulder Europe B.V. Method for operating a mixer vehicle.
DE102018204561B3 (de) * 2018-03-26 2019-09-12 Zf Friedrichshafen Ag Trommelantrieb für einen Fahrmischer
DE102019204435A1 (de) * 2019-03-29 2020-10-01 Zf Friedrichshafen Ag Antriebsstrang für eine Mischertrommel und Steuergerät für einen solchen Antriebsstrang
CN111673909A (zh) * 2020-06-03 2020-09-18 河海大学 新型岩土工程用搅拌器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390282A (en) * 1976-07-06 1983-06-28 Bake Willem J H Container
US20030158638A1 (en) * 1999-07-30 2003-08-21 Oshkosh Truck Corporation Control system and method for electric vehicle
US20060048601A1 (en) * 2002-05-31 2006-03-09 Sheng Chiao System and method for powering accessories in a hybrid vehicle
EP1825981A2 (en) * 2006-02-27 2007-08-29 Mecbo S.r.l. Hopper and pump unit to be mounted on a cement mixer lorry
US20070263478A1 (en) * 2006-05-15 2007-11-15 Burch Leon A Hydraulic power system

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949364A (en) * 1930-01-18 1934-02-27 Chain Belt Co Apparatus for supplying water to concrete mixers
US2338820A (en) * 1940-01-13 1944-01-11 T L Smith Co Concrete mixer
US2282694A (en) * 1941-02-10 1942-05-12 Chain Belt Co Water supply system for concrete mixers
US3107901A (en) * 1959-08-03 1963-10-22 Harold M Zimmerman Pre-mixed concrete system
US3622858A (en) * 1970-10-29 1971-11-23 Clair Emerson Mitchell Electrical generating system for an automotive vehicle
US3767171A (en) * 1971-07-09 1973-10-23 P Dunmire Small volume transit-mix
US3801074A (en) * 1971-08-30 1974-04-02 Montigny Mixing and dispensing apparatus
CA938698A (en) * 1972-04-17 1973-12-18 W. E. Hodgson Patrick Control for vehicular concrete mixer
US3902219A (en) * 1972-05-08 1975-09-02 Judson O Jones Artificial turf cleaner
DE2518084A1 (de) * 1975-04-23 1976-11-04 Gerhard Dr Hudelmaier Einrichtung zum steuern der betonherstellung in transportbetonmischern
US4034918A (en) * 1975-08-06 1977-07-12 Saturn Manufacturing, Inc. Drive arrangement for rotary shredding apparatus
US4276975A (en) * 1978-11-01 1981-07-07 Jenkins Eugene M Inclination maintaining system for a discharge chute
US4221331A (en) * 1979-02-26 1980-09-09 Goran Jr Leo Atomizing apparatus
US4341508A (en) * 1979-05-31 1982-07-27 The Ellis Williams Company Pump and engine assembly
US4489242A (en) * 1981-01-22 1984-12-18 Worst Marc T Stored power system for vehicle accessories
US4644207A (en) * 1985-04-15 1987-02-17 Rockwell International Corporation Integrated dual pump system
US4711334A (en) * 1986-08-28 1987-12-08 Barry Joseph A Telescopic chute for mixer discharge
CA1311468C (en) * 1989-06-28 1992-12-15 Gilles Lavoie Portable concrete mixer
US5103923A (en) * 1989-11-30 1992-04-14 Marathon Letourneau Company Method and apparatus for propelling and retarding off-road haulers
US5052630A (en) * 1990-02-27 1991-10-01 Mac Corporation Method and apparatus to reduce material
CN2172701Y (zh) * 1993-10-16 1994-07-27 秦月云 翻转式混凝土、砂浆搅拌机
CN2218118Y (zh) * 1994-11-25 1996-01-24 朱其胜 车携清洗装置
US6165283A (en) * 1998-10-23 2000-12-26 Dahlin; William G. Railcar cleaning method and apparatus
US6381801B1 (en) * 2000-05-10 2002-05-07 Clean Up America, Inc. Self-propelled brushless surface cleaner with reclamation
WO2001090490A1 (fr) * 2000-05-23 2001-11-29 Kobelco Construction Machinery Co., Ltd. Engin de construction
AU7736201A (en) * 2000-10-05 2002-04-11 Komatsu Mining Germany Gmbh Drive system for a hydraulic excavator
US6471194B2 (en) * 2000-12-14 2002-10-29 Bart Keeney Mist fan
US6625844B2 (en) * 2001-05-18 2003-09-30 Robert E. Savage Modular vacuum system and method
FI112050B (fi) * 2001-09-04 2003-10-31 Etelae Suomen Autotalo Oy Laitteisto ja menetelmä ajoneuvon apuhallintalaitteiden käyttämiseksi
JP3822826B2 (ja) * 2002-02-06 2006-09-20 カヤバ工業株式会社 ミキサ車
RU2255009C2 (ru) * 2002-08-12 2005-06-27 Солодовников Алексей Владимирович Передвижная смесительная установка
US20060000490A1 (en) * 2004-06-30 2006-01-05 Barragan Jorge C Method and apparatus for cleaning residual material from the dispensing elements of mixing trucks
US7572022B2 (en) * 2004-08-25 2009-08-11 Iwapi, Inc. Safety and construction trailer
RU51572U1 (ru) * 2004-08-27 2006-02-27 Павел Владимирович Черток Мобильная мастерская для ремонта и технического обслуживания транспортных средств
JP2006175715A (ja) * 2004-12-22 2006-07-06 Kikuya Kikai Sangyo:Kk セメントミルク製造装置
CN100339547C (zh) * 2005-05-25 2007-09-26 中国人民解放军后勤工程学院 车载式多功能混凝土施工设备
JP2007245758A (ja) * 2006-03-13 2007-09-27 Tonneru No Rental:Kk コンクリートミキサー車
US7530728B2 (en) * 2006-10-24 2009-05-12 Lars Rosaen Water control apparatus
CN100558524C (zh) * 2007-07-19 2009-11-11 北京东方建宇混凝土科学技术研究院有限公司 一种轻集料预处理方法及其装置
CN201126101Y (zh) * 2007-11-21 2008-10-01 深圳东风汽车有限公司 混凝土搅拌运输车的供水系统
CN201158327Y (zh) * 2008-02-02 2008-12-03 荆州市荆州区大丰建机设备厂 混凝土搅拌运输车传动机构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390282A (en) * 1976-07-06 1983-06-28 Bake Willem J H Container
US20030158638A1 (en) * 1999-07-30 2003-08-21 Oshkosh Truck Corporation Control system and method for electric vehicle
US20060048601A1 (en) * 2002-05-31 2006-03-09 Sheng Chiao System and method for powering accessories in a hybrid vehicle
EP1825981A2 (en) * 2006-02-27 2007-08-29 Mecbo S.r.l. Hopper and pump unit to be mounted on a cement mixer lorry
US20070263478A1 (en) * 2006-05-15 2007-11-15 Burch Leon A Hydraulic power system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103158677A (zh) * 2011-12-19 2013-06-19 北汽福田汽车股份有限公司 用于工程机械的清洗系统及具有其的工程机械
DE102012012619A1 (de) * 2012-06-26 2014-01-02 Liebherr-Elektronik Gmbh Vorrichtung und Verfahren zur elektrischen Energieversorgung einer industriellen Anlage
EP3023212A1 (en) * 2014-11-24 2016-05-25 Cifa S.P.A. Vehicle to project concrete
US9850671B2 (en) 2014-11-24 2017-12-26 Cifa Spa Vehicle to project concrete
CN111546501A (zh) * 2020-04-29 2020-08-18 德清高盛交通科技有限公司 一种绞笼式砂浆罐水量调节方法、系统、装置及存储介质
CN111546501B (zh) * 2020-04-29 2021-09-10 德清高盛交通科技有限公司 一种绞笼式砂浆罐水量调节方法、系统、装置及存储介质

Also Published As

Publication number Publication date
CN101786295A (zh) 2010-07-28
DE202009001045U1 (de) 2010-07-22
RU2561411C2 (ru) 2015-08-27
US20100188925A1 (en) 2010-07-29
RU2010102701A (ru) 2011-08-10

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