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公开(公告)号:EP4001704A1
公开(公告)日:2022-05-25
申请号:EP21771135.7
申请日:2021-03-08
发明人: HYODO Koji , MIYAMOTO Yasunori , NUKII Masaki
IPC分类号: F16H61/425 , F16H61/46 , F16H61/47
摘要: Provided is a work vehicle capable of attaining a maximum vehicle speed specification value set in advance for each vehicle body even in the case where a device constituting an HST traveling drive system has deteriorated over time. In a wheel loader 1 equipped with an HST traveling drive system, a controller 5 is configured to, in the case where a detection pressure value P is equal to or less than a switching pressure value Ps corresponding to a switching point in the HST motor 42 between a maximum displacement volume qmax and a minimum displacement volume qmin, and a detection vehicle speed value V is less than an upper limit vehicle speed specification value Vmaxs, limit the minimum displacement volume qmin of the HST motor 42 to a first minimum displacement volume value qmin1 less than a minimum displacement volume specification value qmins that is associated with the upper limit vehicle speed specification value Vmaxs.
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公开(公告)号:EP3995721A1
公开(公告)日:2022-05-11
申请号:EP21204514.0
申请日:2021-10-25
发明人: PRÜLL, Thomas
IPC分类号: F16H61/4078 , F16H61/46
摘要: Die Erfindung betrifft eine Hydraulikanlage (10) für eine landwirtschaftliche Verteilmaschine, insbesondere pneumatische Sämaschine und/oder pneumatischer Düngerstreuer, umfassend wenigstens, eine erste Pumpe (14), welche eingerichtet ist, mittels einer Antriebswelle (16) einer Zugmaschine (18) antriebstechnisch gekoppelt und mittels dieser angetrieben zu werden, und einen Hydraulikantrieb (12), welcher eingerichtet ist, ein Gebläse in Abhängigkeit eines erhaltenen Volumenstrom eines Fluid, mit einer steuer- und/oder regelbaren Drehzahl anzutreiben. Um eine landwirtschaftliche Verteilmaschine mit einem Hydraulikantrieb (12) zu schaffen, welche auch mit älteren und geringeren Mengen an Fluid aufweisenden Zugmaschinen betrieben werden kann ist erfindungsgemäß vorgesehen, dass die erste Pumpe (14) und der Hydraulikantrieb (12) mittels eines Leitungssystem (22) einen, vorzugsweise geschlossenen Zirkulationskreislauf (24) bilden, und die erste Pumpe (14) eingerichtet ist, dass Fluid entlang des Zirkulationskreislauf (24) zu fördern.
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公开(公告)号:EP3889468A1
公开(公告)日:2021-10-06
申请号:EP21166589.8
申请日:2021-04-01
发明人: Gassner, Christof
摘要: Die Erfindung betrifft ein System zur Steuerung eines Bohrantriebs eines Spezialtiefbaugerätes umfassend wenigstens einen Hydromotor als Bohrantrieb, der über eine Bohrhydraulik mit der benötigten hydraulischen Energie versorgt ist, sowie ein elektronisches Steuergerät einen Signaleingang und/oder ein Erfassungsmittel zur mittelbaren oder unmittelbaren Bestimmung der Drehzahl des Bohrantriebs und einem Programmspeicher mit gespeicherten Steuerbefehlen, die konfiguriert sind, den Hydromotor in Abhängigkeit der Drehzahl des Bohrantriebs anzusteuern.
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公开(公告)号:EP3385536B1
公开(公告)日:2021-08-25
申请号:EP18165932.7
申请日:2018-04-05
发明人: FRANTZ, Stephen
IPC分类号: F04B49/00 , F03C1/06 , F03C1/40 , F16H61/46 , F16H61/4183 , F16H61/423
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公开(公告)号:EP3421845A1
公开(公告)日:2019-01-02
申请号:EP17898336.7
申请日:2017-03-28
发明人: KAYANE Masahiro , KODAKA Katsuaki
摘要: A wheel type hydraulic excavator 1 is provided with: an auto-cruise control condition determining section 62 that determines an auto-cruise control condition of the wheel type hydraulic excavator 1 based on an output signal of a traveling manipulated variable pressure sensor 35, an output signal of an auto-cruise switch 30, and an actual vehicle speed of the wheel type hydraulic excavator 1; a target vehicle speed changeover condition determining section 63 that determines a target vehicle speed changeover condition based on contents of a determination of the auto-cruise control condition determining section 62 and an input signal from a front manipulated variable pressure sensor 56; and a vehicle speed deviation-correction pressure calculator 67 that determines a correction pressure for the traveling manipulated variable pressure sensor 35 in a direction where a deviation of the actual vehicle speed of the wheel type hydraulic excavator 1 from a target vehicle speed for during front-combined operation reaches zero.
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公开(公告)号:EP2530208A4
公开(公告)日:2017-08-09
申请号:EP11737089
申请日:2011-01-27
发明人: KARASAWA HIDEO , ARIGA NOBUEI , NAKAMURA TSUYOSHI
IPC分类号: E02F9/22 , F15B11/028 , F15B11/04 , F16H61/4017 , F16H61/4061 , F16H61/4148 , F16H61/421 , F16H61/423 , F16H61/44 , F16H61/448 , F16H61/46 , F16H61/47
CPC分类号: E02F9/2253 , E02F9/2282 , E02F9/2285 , E02F9/2292 , F15B2211/20576 , F15B2211/3116 , F15B2211/50518 , F15B2211/528 , F15B2211/5753 , F15B2211/6309 , F15B2211/7135 , F15B2211/763 , F16H61/4017 , F16H61/4061 , F16H61/4148 , F16H61/421 , F16H61/423 , F16H61/44 , F16H61/47
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公开(公告)号:EP2895742B1
公开(公告)日:2016-07-13
申请号:EP14713232.8
申请日:2014-02-25
IPC分类号: F04B1/053 , F03C1/053 , F03C1/40 , F03D7/02 , F04B1/06 , F04B11/00 , F04B17/02 , F16H61/431 , F16H61/46
CPC分类号: F16H39/16 , F03C1/0447 , F03C1/045 , F03C1/053 , F03C1/0531 , F03D7/0296 , F03D9/25 , F03D9/28 , F03D9/32 , F03D15/00 , F04B1/053 , F04B1/0531 , F04B1/06 , F04B1/063 , F04B11/00 , F04B11/0075 , F04B17/02 , F04B49/065 , F04B49/22 , F05B2260/406 , F16H61/4183 , F16H61/431 , Y02E10/722 , Y02E10/723 , Y02P80/158
摘要: A hydraulic transmission comprising a variable displacement pump and motor, at least one having cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a valve control module which determines a displacement of the pump and the motor by specifying a displacement demand. The pump and/or motor valve control module determine the frequency of intensity peaks in the frequency spectrum of the pattern of cylinders carrying out active and inactive cycles of cylinder working volume using a first procedure and, if these will fall within disallowed frequency bands including the resonant frequency of components with which the transmission is in mechanical communication, the displacement demand, or another input, is periodically modified to suppress generation of those frequencies. The hydraulic transmission is useful for example in a wind turbine generator, or a vehicle.
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公开(公告)号:EP2354601B1
公开(公告)日:2013-09-04
申请号:EP10013215.8
申请日:2003-04-15
发明人: Mares, Riccardo
IPC分类号: F16H61/46 , B60K17/10 , F16H61/4035 , F16H61/433 , F16H61/452
CPC分类号: F16H61/4035 , B60K17/10 , F16H61/4052 , F16H61/433 , F16H61/439 , F16H61/452
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公开(公告)号:EP2169276B1
公开(公告)日:2012-10-24
申请号:EP09171521.9
申请日:2009-09-28
申请人: CNH Italia S.p.A.
IPC分类号: F16H61/662 , F16H61/46 , F16H59/06
CPC分类号: F16H61/16 , B60W2720/10 , B60Y2200/221 , F16H59/06 , F16H59/36 , F16H61/462 , F16H61/47 , F16H61/66259 , F16H63/065 , F16H2059/065 , F16H2059/363 , F16H2059/366 , F16H2061/6617
摘要: A method is described for operating a vehicle fitted with a continuously variable transmission (CVT) 12 and having a lever 32 for varying the transmission ratio of the CVT 12 to permit the vehicle operator to vary the vehicle wheel speed. In the invention, the transmission ratio of the CVT 12 is limited to a value dependent upon at least one of the prevailing engine speed and the rate of change of the engine speed.
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