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    • 1. 发明申请
    • Hydraulic system for utility vehicles, in particular agricultural tractors
    • 多用途车辆液压系统,特别是农用拖拉机
    • US20070045032A1
    • 2007-03-01
    • US11472148
    • 2006-06-21
    • Andreas BrockmannMichael Martens
    • Andreas BrockmannMichael Martens
    • B60K25/00G01L25/00B60K17/00B60K26/00
    • F15B11/165F15B11/162F15B11/168F15B2211/253F15B2211/30535F15B2211/6054F15B2211/65F15B2211/7053F15B2211/7058
    • Disclosed is a hydraulic system for utility vehicles, in particular agricultural tractors, for supplying primary and/or auxiliary pressure medium consumers (6, 11, 12) with pressure medium, comprising a pump (1), sucking from a pressure medium tank (3), the pump being controlled as a function of the load pressure of the pressure medium consumers and supplying a pump pressure exceeding the load pressure by a predetermined control pressure differential. In order to produce a first control pressure differential for operating a primary pressure medium consumer (6) its load pressure acts upon a pressure and flow controller (13) of the pump and in order to produce a second higher control pressure differential for operating an auxiliary pressure medium consumer (11, 12) a pressure exceeding their load pressure is produced by means of an amplifying circuit (29). In order to obtain rapid response of an actuated primary pressure medium consumer and in order to prevent, under certain conditions due to thermal expansion, pressure medium from flowing to the pressure and flow controller of the pump and possibly causing unwanted restriction of the pump, it is proposed that the load pressure of a primary pressure medium consumer (6) and the pressure supplied by the amplifying circuit (29) can be fed via a shuttle valve (19) to the pressure and flow controller (13) of the pump (1) and that the load pressure reporting line (28) conducting the load pressure of an auxiliary pressure medium consumer (11, 12) is connected via a flow control valve (30) to the pressure medium tank (3).
    • 公开了一种用于多用途车辆,特别是农用拖拉机的液压系统,用于向压力介质​​供应初级和/或辅助压力介质消耗器(6,11,12),包括泵(1),从压力介质罐(3) ),作为压力介质使用者的负载压力的函数控制泵,并且通过预定的控制压力差提供超过负载压力的泵压力。 为了产生用于操作初级压力介质消耗器(6)的第一控制压力差,其负载压力作用在泵的压力和流量控制器(13)上,并且为了产生用于操作辅助件的第二较高控制压力差 压力介质消耗器(11,12)通过放大电路(29)产生超过其负载压力的压力。 为了获得致动的初级压力介质消耗者的快速响应,并且为了防止由于热膨胀而在某些条件下压力介质流入泵的压力和流量控制器并且可能导致泵的不期望的限制, 提出了一次压力介质消耗器(6)的负载压力和由放大电路(29)供应的压力可以经由梭阀(19)馈送到泵(1)的压力和流量控制器(13) ),并且进行辅助压力媒体消耗器(11,12)的负载压力的负载压力报告线路(28)经由流量控制阀(30)连接到压力介质箱(3)。
    • 3. 发明授权
    • Hydraulic system for utility vehicles, in particular agricultural tractors
    • 多用途车辆液压系统,特别是农用拖拉机
    • US07562525B2
    • 2009-07-21
    • US11472148
    • 2006-06-21
    • Andreas BrockmannMichael Martens
    • Andreas BrockmannMichael Martens
    • F15B11/16E02F9/22
    • F15B11/165F15B11/162F15B11/168F15B2211/253F15B2211/30535F15B2211/6054F15B2211/65F15B2211/7053F15B2211/7058
    • Disclosed is a hydraulic system for utility vehicles, in particular agricultural tractors, for supplying primary and/or auxiliary pressure medium consumers with pressure medium, comprising a pump, sucking from a pressure medium tank, the pump being controlled as a function of the load pressure of the pressure medium consumers and supplying a pump pressure exceeding the load pressure by a predetermined control pressure differential. The hydraulic system produces a first control pressure differential for operating a primary pressure medium consumer and a second higher control pressure differential for operating an auxiliary pressure medium consumer. The hydraulic system obtains rapid response of an actuated primary pressure medium consumer and prevents, under certain conditions due to thermal expansion, pressure medium from flowing to the pressure and flow controller of the pump and possibly causing unwanted restriction of the pump.
    • 公开了一种用于多用途车辆,特别是农用拖拉机的液压系统,用于向主要和/或辅助压力介质消耗者供应压力介质,包括泵,从压力介质罐抽吸,泵被控制为负载压力的函数 的压力介质消耗器,并且通过预定的控制压力差提供超过负载压力的泵压力。 液压系统产生用于操作初级压力介质消耗器的第一控制压力差和用于操作辅助压力介质消耗器的第二较高控制压力差。 液压系统获得致动的初级压力介质消耗者的快速响应,并且在由于热膨胀的某些条件下阻止压力介质流入泵的压力和流量控制器并且可能导致泵的不期望的限制。
    • 10. 发明申请
    • Hydraulic System For Utility Vehicles, In Particular Agricultural Tractors
    • 多用途车辆液压系统,特别是农用拖拉机
    • US20070199440A1
    • 2007-08-30
    • US11679720
    • 2007-02-27
    • Andreas BrockmanMichael Martens
    • Andreas BrockmanMichael Martens
    • F15B11/00
    • F15B21/085F15B11/05F15B11/162F15B2211/20523F15B2211/20553F15B2211/30535F15B2211/3111F15B2211/3127F15B2211/3144F15B2211/327F15B2211/328F15B2211/6054F15B2211/6333F15B2211/6346F15B2211/6652F15B2211/6656F15B2211/7053F15B2211/7058
    • A hydraulic system for utility vehicles, in particular agricultural tractors, with a regulated hydraulic pump (1) is disclosed for prioritised pressure medium supply to internal and external pressure medium consumers (6, 11, 12), which are fed via load sensing spool valves (20, 26), the external pressure medium consumers (11, 12) being supplied with pressure medium via a priority valve (17). In the case of known utility vehicles the lowest priority is assigned to the internal pressure medium consumers. Situations are known however, when operating an air seeder for example, in which it is not expedient with the pressure medium supply to give preference to the internal pressure medium consumers over the external because the power capacity of the hydraulic system is not then exploited to an optimum. Short supply to such implements leads to a negative influencing of the work pattern.In order to improve the work quality of an implement driven by an external pressure medium consumer, it is proposed that priority can be selectively assigned to the internal (6) or the external (11, 12) pressure medium consumers.It is thus possible for the driver, in order to ensure optimum operation of the utility vehicle in critical situations, to give priority to external pressure medium consumers. In this way during operation of an implement for dispersion of substances, seed for example, over a wide area, better work quality can be attained, as a reduced supply and thus slower function of the internal power lift are accepted for example.
    • 公开了一种用于多用途车辆的液压系统,特别是具有调节液压泵(1)的农用拖拉机的液压系统,用于将内部和外部压力介质消耗器(6,11,12)的优先压力介质供应给负载感测滑阀 (20,26),所述外部压力介质消耗器(11,12)经由优先阀(17)被供给压力介质。 在已知的多功能车的情况下,最低优先级被分配给内部压力介质消耗器。 然而,当操作例如空气播种机的情况是已知的,其中当压力介质供给不利于内部压力介质消耗者超过外部时,因为液压系统的功率容量未被利用到 最佳。 对这种工具的短缺导致工作模式的负面影响。 为了提高由外部压力媒体消费者驱动的工具的工作质量,建议优先选择性地分配给内部(6)或外部(11,12)压力介质消费者。 因此,为了在危急情况下确保多功能车的最佳运行,驾驶员可以优先考虑外部压力介质消耗者。 以这种方式,在用于分散物质,种子例如广泛区域的工具的操作中,可以获得更好的工作质量,因为例如减少的供应,因此内部动力升降机的功能较慢。