• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a dump truck or truck, having a diesel-electric drive system and a cooling system, two fans (130) for radiators and / or blowers for cooling the cooling system are driven by a hydraulic motor ( 120).
    公开号:FR3021998A1
    申请号:FR1554918
    申请日:2015-05-29
    公开日:2015-12-11
    发明作者:Sebastien Nicolas Hoffmann；Kai Kugelstadt；Burkhard Richthammer；Klaus Graner
    申请人:Liebherr Mining Equipment Colmar SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a dump truck or truck, comprising a diesel-electric drive system and a cooling system. Dump trucks or large dump trucks are used mainly for the extraction of coal or the extraction of ores for the transportation of coal, minerals and ores. These bulk material trucks are manufactured in sizes over 90 t (90,000 kg) up to multiples of 100 t in weight and load, so that they have very large overall dimensions. A diesel-electric engine is used as drive means, the mechanical energy 15 generated by a diesel engine being converted using a generator into electrical energy to power the electrical drive means. The reason for this is that diesel engines, like all internal combustion engines, can only operate with ideal efficiency in a very limited speed range and can not be started under load. AC motors for the drive shafts can produce the desired torque also in the lower part of the speed range to start. The internal combustion engine can operate continuously in the ideal speed range. Previously, all the auxiliary consumers of the vehicle have been electrically driven; thus, for example, all the components for the operation of an air cooling system of the working machine. The power supply of the motorized components of the cooling system has been provided by the generator of the diesel-electric drive system. The disadvantage of this way of proceeding is that circuits of different voltages have to be produced for different auxiliary consumers. For this purpose, at least one other power electronics module is required in addition to the power electronics for the control of the electric drive, the additional power electronics providing a DC voltage circuit suitable for power supply. any auxiliary consumer such as fan motor etc. The object of the invention is to present an innovative concept for the supply of energy to the auxiliary consumers of a dump truck of this type. This goal is achieved with a dump truck or truck, having a diesel-electric drive system and a cooling system, the cooling system as a radiator blower comprising two radial fans each of which is driven by a hydraulic motor . According to advantageous embodiments of the invention, the dump truck may also have at least one of the following additional features, considered alone or in combination: the electricity generated by the diesel-electric drive system serves exclusively to the power supply of the drive motor (s); the necessary hydraulic energy may be provided by at least one hydraulic pump drivable by means of at least one transmission unit associated with the internal combustion engine and / or with a generator of the diesel-electric system; the hydraulic motors are adapted to drive the radiator fans and / or the cooling fans, intended to cool other components than the radiators, at a constant speed or at a variable speed; the speed of the hydraulic motors of the radiator fans and / or the cooling fans can be set independently of the speed of the internal combustion engine; the radiator fans and / or the cooling fans supply air, through air guiding passages, to the electric motors of the driven vehicle shafts, in particular to the rear axle, and / or to one or more transmissions. planetary gears of the driven vehicle axis and / or one or more components of the power electronics, including frequency inverters and / or the diesel - electric drive system generator; - the radial fans are arranged, seen in the direction of travel, behind a top plate of the dump truck and / or on the generator of the diesel - electric drive system. The invention provides a mobile work machine, particularly in the form of a dump truck or a truck, having a diesel - electric drive system and a cooling system for cooling the components of any system. The components necessary to form the cooling system are hereinafter referred to as the auxiliary consumers. According to the invention, at least the auxiliary consumers of the cooling system, that is at least two radiator fans and / or cooling system cooling fans, which are in the form of radial fans , are hydraulically driven. The radiator fans or respectively the cooling fans each comprise at least one associated hydraulic motor, these hydraulic motors being supplied by a hydraulic circuit having the necessary pressure. Therefore, and according to the invention, the radiator fans and / or the cooling fans are no longer electrically powered by the generator but are hydraulically driven. Radiator fans are used to draw in cooling air while cooling fans are used to manage the flow of cooling air through the airflow passages. The invention results in a simplification of the power electronics, since power electronics components previously required to provide a separate DC voltage circuit for powering the electric motors of the fans can be dispensed with. Manufacturing and maintenance of power electronics is simplified and less expensive. The hydraulic drive of the fan motors and / or the blower motors is instead of the electric drive characterized by greater stability and reliability, which proves to be a great advantage, especially for machines working under the form of dump trucks, due to environmental conditions at the operating site. In addition, the operation of the fan motors and / or the blower motors can be ensured substantially independently of the operating conditions of the internal combustion engine. According to a particularly preferred embodiment of the invention, the electricity generated by the diesel-electric drive system is used exclusively for feeding the drive motor or motors. The supply of all other auxiliary consumers, especially for the cooling system, is provided by integration of one or more hydraulic circuits. The hydraulic energy required to power the hydraulic motors for radiator fans or for cooling blowers is provided by one or more hydraulic pumps (s). The hydraulic pumps are driven by means of at least one gearbox which can be mounted directly on the internal combustion engine, for example by a belt connection or, alternatively, on the output shaft. of the combustion engine, or on the input or output side of a diesel-electric generator. It is important in this embodiment that the internal combustion engine drives the generator directly, in particular through a shaft passing through the transmission housing so that transmission losses of the transmission chain between the internal combustion engine and the generator are avoided as much as possible. A predetermined portion of the transmission housing torque is deflected by the transmission housing to drive the hydraulic pumps. Alternatively, one or more hydraulic pumps can also be coupled directly to the internal combustion engine by a belt connection.
    [0002] In a particularly preferred embodiment of the invention, the hydraulic drive respectively radiator fans or cooling fans can operate at constant speed or variable speed. The necessary speed adjustment may in particular be carried out independently of the operating point of the internal combustion engine or the generator. Radiator fans are radial fans driven by at least one hydraulic motor. According to a preferred embodiment of the invention, one or more air guiding passages extend in the direction of the electrical drive (s), that is to say in the direction of the electric motors of the vehicle shafts. driven, in particular from the rear axle, and / or in the direction of one or more components of the power electronics of the diesel-electric drive system, in particular frequency inverters, and / or to the generator of the 35 diesel-electric drive system itself. Sufficient cooling air may be supplied in the direction of the components to be cooled using one or more cooling fans within the air guide passages so that sufficient cooling is achieved. The radiator fans or the radial fans are arranged, seen in the direction of travel, behind an upper plate of the working machine and / or above or on the diesel-electric drive system generator. Other features, details and advantages of the invention are described with the aid of the embodiment shown in the drawings in which: FIGS. 1 to 4 are a plurality of representations of a dump truck according to the invention FIG. 5 is a detailed perspective view of the chassis of the truck according to the invention, and FIG. 6 is a diagrammatic representation of a hydraulic circuit for the supply of energy for at least one cooling circuit fan. . A dump truck 10 is shown in Figures 1 to 4. This is a large dump truck as used, for example, in ore mines. Front wheels 14 and rear wheels 16, driven by electric motors not shown in greater detail, are supported by a rigid frame 12. The rear wheels 16 are shown with double tires. A tipper 18 is pivotally mounted on the frame 12 and is adapted to be pivotable with hydraulic cylinders 20 disposed on both sides of the vehicle. The vehicle is bordered by a bumper 22 in the front part of the vehicle 10, seen in the direction of travel. A radiator module 24 is arranged above the bumper 22. An upper plate 26, on which an operator's cab 28 is provided, extends over the entire width of the dump truck 10 above the module. In the embodiment shown here, the operator's cab 28 is disposed on the side of the upper plate 26 of the left side, seen in the direction of travel. Thus, the operator's cabin is located above the left front wheel 14. The dump truck 10 comprises a diesel-electric drive system which is easily recognizable in the detailed perspective view of the frame 12 in FIG. The drive system comprises a diesel engine 40 mounted in the forward zone of the chassis 12, as seen in the direction of travel. The internal combustion engine 40 is in particular located in the zone of the front axle 14 below the upper plate 26 and the operator's cab 28. The radiator module 24 is located directly in front of the internal combustion engine 40. the front of the vehicle. The internal combustion engine 40 drives the generator 60 mechanically to generate the electrical energy necessary for the electric drives.
    [0003] Two AC motors 80, which are integrated left and right in the rear axle 16, are used to drive the vehicle. A power electronics 100 comprising the necessary components such as, for example, frequency converters, etc. is provided for the control and regulation of the electric motors 80 and the generator 60. An air cooling circuit serves in particular for the cooling of the generator 60, the power electronics 100 and the electric motors 80. The cooling air is sucked by two radial fans 130 which are mounted, seen in the direction of movement, behind the upper plate 26 above the generator 60 and centrally in the transverse direction. The sucked air is conveyed by air guiding passages to the generator 60, to the power electronics 100 and to the electric motors 80 and to the planet gears or transmissions of the driven rear axle 16. The radial fans 130 are not supplied with electricity but each rather comprise at least one hydraulic motor which is driven by the effect of a hydraulic pressure required via a hydraulic circuit. To this end, one or more hydraulic pumps are driven, as auxiliary consumers, via the transmission housing 50. In the embodiment shown, a hydraulic pump 65 is driven by the shaft passing through the generator 60. A schematic representation of the circuit The hydraulic pump 65 is mechanically driven, for example, via the transmission housing 50. It pumps hydraulic oil from a hydraulic reservoir 32 to the hydraulic motor 120 which generates the rotation torque. The hydraulic fluid sent to the engine 120 is then returned to the tank 32. The hydraulic motor 120 is secured by the non-return valve 110. The hydraulic pump 65 is designed as a variable element so as to control the speed of the fan, so that the speed of the fan motor 120 can be varied. An additional pump and a control valve can be connected upstream or downstream of the hydraulic pump 65. Due to the use, according to the invention, of hydraulic motors as radiator fan motors, additional components of Power electronics 100 for designing an electrical circuit for powering electric fan motors may be omitted. The power electronics 100 used here has a considerably simpler design. In addition, the speed of the fan motors 120 can be set independently of the operating point of the internal combustion engine 40 or the generator 60. In addition to the air cooling, a coolant circuit, in particular a common cooling circuit 5 for cooling the generator 60 and / or the power electronics 100 and / or the electric motors 80 and / or the transmission gear of the sun gear can also be provided. Hydraulic pumps required for this purpose are then also driven via the transmission housing 50.
    权利要求:
    Claims (7)
    [0001]
    REVENDICATIONS1. A dump truck (10) or truck having a diesel-electric drive system and a cooling system, characterized in that the cooling system as a radiator blower (24) comprises two radial fans (130) each of which is driven by a hydraulic motor (120).
    [0002]
    2. Dump truck or truck according to claim 1, characterized in that the electricity generated by the diesel-electric drive system is used exclusively for feeding the drive motor or motors (80).
    [0003]
    Dump truck or truck according to one of the preceding claims, characterized in that the required hydraulic energy can be provided by at least one hydraulic pump (65) which can be driven via at least one transmission housing. (50) associated with the internal combustion engine (40) and / or a generator (60) of the diesel-electric system.
    [0004]
    Truck or truck according to one of the preceding claims, characterized in that the hydraulic motors (120) are adapted to drive the radiator fans and / or cooling fans at a constant speed or at a variable speed.
    [0005]
    Dump truck or truck according to one of the preceding claims, characterized in that the speed of the hydraulic motors (120) of the radiator fans and / or the cooling fans can be regulated independently of the speed of the internal combustion engine. (40).
    [0006]
    Tipper or truck according to one of the preceding claims, characterized in that the radiator fans and / or the cooling fans supply air, via air-guiding passages, to the electric motors (80). ) driven vehicle shafts, in particular to the rear axle, and / or to one or more planetary transmissions of the driven vehicle axis and / or to one or more components of the power electronics (100), in particular to frequency inverters and / or the diesel-electric drive system generator.
    [0007]
    Truck or truck according to one of the preceding claims, characterized in that the radial fans (130) are arranged in the direction of travel behind an upper platform of the dump truck and / or the generator of the truck. diesel-electric drive system.
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    同族专利:
    公开号 | 公开日
    DE102014008477B4|2019-07-04|
    DE102014008477A1|2015-12-17|
    AU2015202608A1|2015-12-24|
    AU2015202608B2|2018-08-02|
    ZA201503934B|2016-04-28|
    FR3021998B1|2019-12-13|
    CA2891817A1|2015-12-05|
    US9718345B2|2017-08-01|
    RU2015121217A3|2018-12-13|
    RU2684816C2|2019-04-15|
    US20150352944A1|2015-12-10|
    RU2015121217A|2016-12-27|
    CN204900045U|2015-12-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20090145121A1|2005-09-01|2009-06-11|Hitachi Construction Machinery Co., Ltd.|Hydraulic Drive Device for Dump Truck|
    WO2008055216A2|2006-10-31|2008-05-08|Enviro-Cool, Inc.|Air management system for truck|
    US20080238607A1|2007-03-30|2008-10-02|Caterpillar Inc.|Fan speed control system|
    US20100065355A1|2008-09-15|2010-03-18|Caterpillar Inc.|Cooling system for an electric drive machine and method|
    DE887917C|1943-06-23|1953-08-27|Siemens Ag|Cooling of combustion-electric vehicle drives, in particular tracked vehicles|
    FR1574912A|1968-06-05|1969-07-18|
    SU953308A1|1977-04-19|1982-08-23|Ворошиловградское Производственное Объединение Тепловозостроения|Mechanism hydraulic drive|
    US4325451A|1977-12-28|1982-04-20|Kabushiki Kaisha Komatsu Seisakusho|Electric power plant for vehicles|
    DE19538899A1|1995-10-19|1997-04-24|Rexroth Mannesmann Gmbh|Cooler fan hydrostatic drive e.g. for diesel engine of heavy goods vehicle|
    US6142213A|1997-11-25|2000-11-07|Siemens Canada Limited|Ducted cooling system with radial-flow fan|
    RU2201353C2|2001-04-17|2003-03-27|Федеральное государственное унитарное предприятие "Конструкторское бюро транспортного машиностроения"|Watercraft|
    DE102004028354A1|2004-06-11|2006-01-05|Siemens Ag|Device for operating a fan|
    JP4329864B2|2008-02-12|2009-09-09|トヨタ自動車株式会社|Control device for vehicle power transmission device|
    DE102010031835A1|2010-07-22|2012-01-26|Liebherr-Werk Nenzing Gmbh|fan control|
    DE102011114354B3|2011-09-27|2012-11-22|Voith Patent Gmbh|Underfloor cooling system for a rail vehicle|DE102014003155A1|2014-03-03|2015-09-03|Liebherr-Mining Equipment Colmar Sas|Work machine, in particular dump truck or truck|
    DE102014003203A1|2014-03-06|2015-09-10|Liebherr-Mining Equipment Colmar Sas|Work machine, in particular dump truck or truck|
    US10414266B1|2017-04-28|2019-09-17|Oshkosh Defense, Llc|Vehicle cooling systems and methods|
    US20190292975A1|2018-03-20|2019-09-26|Oshkosh Corporation|Hydraulic fan arrangement|
    RU199960U1|2019-12-30|2020-09-29|федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана " |Electric traction drive for hybrid articulated work machine|
    法律状态:
    2016-05-12| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-25| PLFP| Fee payment|Year of fee payment: 3 |
    2018-01-19| PLSC| Search report ready|Effective date: 20180119 |
    2018-05-17| PLFP| Fee payment|Year of fee payment: 4 |
    2019-05-24| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-23| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-22| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014008477.9|2014-06-05|
    DE102014008477.9A|DE102014008477B4|2014-06-05|2014-06-05|Dump truck or truck with a diesel-electric traction drive, a cooling system and a hydraulic motor|
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