The embodiment of the invention discloses a closed system, hoisting equipment and crawler-type travelling equipment. The closed system comprises a motor used for driving a hoisting mechanism or a travelling mechanism of mechanical equipment to work, a closed pump connected with the motor by means of a working pipeline and used for driving the motor, and an inching control valve arranged on the working pipeline or an oil port of the motor and used for conducting inching control when the mechanical equipment descends and/or preventing the motor from rotating reversely when the mechanical equipment ascends. The closed system is simple in structure, a speed of the mechanical equipment can be slightly increased from zero, a movement speed of the mechanical equipment is accurately controlled, controllability of the mechanical equipment is improved, opening impact is reduced, and therefore safety of the closed system is improved.
本发明实施例公开了一种闭式系统、起重设备和履带式行走设备。该闭式系统包括:马达,用于驱动机械设备的卷扬机构或行走机构工作;闭式泵,与马达通过工作管路连接,用于驱动马达;微动控制阀,设置于工作管路上或设置于马达的油口,用于在机械设备进行下降动作时进行微动控制和/或在机械设备进行上升动作时防止马达反转。该闭式系统结构简单,且可以实现机械设备速度从零开始的微动,对机械设备的运动速度精准控制,提升机械设备的操控性,降低开启冲击,从而提高闭式系统的安全性。
Closed system, hoisting equipment and crawler-type travelling equipment
闭式系统、起重设备和履带式行走设备
2022-01-14
Patent
Electronic Resource
Chinese