The invention discloses a crane lifting protection device, which comprises a direct-current power supply converter, a first relay, a second relay, a programmable controller and a frequency converter, and is characterized in that one end of the direct-current power supply converter is electrically connected with an external alternating-current power supply; the positive electrode of the direct-current power converter is electrically connected with the first AD interface and one interface of the second relay simultaneously, the negative electrode of the direct-current power converter is electrically connected with the second AD interface and one interface of the second relay simultaneously, and the second relay and the torque switch are connected between the positive electrode and the negative electrode of the direct-current power converter in series. The second relay is electrically connected with the programmable slave controller and the first relay at the same time, the first relay is connected with the second relay and the torque switch in parallel, the first relay and the second relay are electrically connected with the frequency converter at the same time after being connected in parallel, and the frequency converter is electrically connected with the programmable controller; and the emergency stop function response speed is high.
本发明公开了一种起重机起升保护装置,所述起重机起升保护装置包括直流电源转换器、第一继电器、第二继电器、可编程控制器和变频器,直流电源转换器的一端与外部交流电源电连接,直流电源转换器的正极同时与第一AD接口以及第二继电器的一个接口电连接,直流电源转换器的负极同时和第二AD接口以及第二继电器的一个接口电连接,第二继电器和力矩开关串联在直流电源转换器的正极和负极之间,第二继电器同时和可编程从控制器和第一继电器电连接,第一继电器同时和第二继电器以及力矩开关并联,第一继电器和第二继电器并联后同时和变频器电连接,变频器和可编程控制器电连接;具有急停功能响应速度快的优点。
Crane lifting protection device
一种起重机起升保护装置
2024-03-29
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
Gantry crane lifting appliance cable protection device
Europäisches Patentamt | 2021
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