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发明公开
CN105263734A 液压传动设备 有权

液压传动设备
摘要：
一种液压传动设备(20)包括：可变排量泵(24)，其供给一个或多个液压马达(26A、26B)；以及控制单元(50)。在该设备中，上述马达的供给端口和排放端口被布置成使得当这些端口中的压力相等时，这些马达的输出转矩是零。为了在无需物理地绕过这些马达的前提下使该设备空转，控制单元能够通过调控泵的排量使得所述供给端口和排放端口处的压力保持基本相等，使该设备以“无转矩”模式操作。
摘要（英）：

A hydraulic transmission device (20) comprising a variable displacement pump (24) supplying one or a plurality of hydraulic motors (26A, 26B), and a control unit (50). In the device, the supply and exhaust ports of the motors are arranged such that when the pressures in these ports are equal, the output torque of the motors is zero. In order to make the device inactive without physically bypassing the motors, the control unit is capable of operating the device in a 'no torque' mode by regulating the displacement of the pump in such a way that the pressures at said supply and exhaust ports remain substantially equal.

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