The invention relates to a crane luffing mechanism driving loop and a crane, and belongs to the technical field of motor driving, the crane luffing mechanism driving loop comprises a relay driving circuit, a relay control circuit, a relay delay circuit and a frequency converter; the relay driving circuit is used for receiving and responding to an externally input state instruction so as to output a control signal group; the control signal group comprises an amplitude control signal and a speed regulation control signal; the frequency converter is connected to the relay driving circuit and responds to the control signal group to control the working state of a driving motor M1 in the luffing mechanism; and the relay time delay circuit is connected to the frequency converter and the relay driving circuit, and responds to the amplitude control signal so as to control a brake M2 in the luffing mechanism to open or control the brake M2 in the luffing mechanism to brake after delaying a preset delay duration. The crane jib luffing mechanism has the effect of reducing impact on a mechanical structure when the crane jib luffing mechanism is driven.
本申请涉及一种起重机变幅机构驱动回路及起重机,属于电机驱动技术领域,起重机变幅机构驱动回路包括继电器驱动电路、继电器控制电路、继电器延时电路以及变频器;继电器驱动电路,用于接收并响应于外部输入的状态指令,以输出控制信号组;所述控制信号组包括幅度控制信号以及调速控制信号;变频器,连接于继电器驱动电路,响应于所述控制信号组以控制变幅机构中的驱动电机M1的工作状态;继电器延时电路,连接于变频器以及继电器驱动电路,响应于幅度控制信号,以控制变幅机构中的制动器M2开闸或延迟预设延迟时长后控制变幅机构中的制动器M2抱闸。本申请具有减小驱动起重机变幅机构时对机械结构的冲击的效果。
Crane luffing mechanism driving loop and crane
一种起重机变幅机构驱动回路及起重机
2023-10-24
Patent
Electronic Resource
Chinese
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