Gantry crane control system and method and portal crane

By introducing motor control modules and load detection modules into the gantry crane, the working status of the lifting motor is monitored and controlled in real time, ensuring that the wire rope is in a tightened state when the grab is lowered, solving the damage to parts and safety hazards caused by loose wire ropes, and improving the operating stability of the equipment.

CN119706616AInactive Publication Date: 2025-03-28HUNAN CHINA RAILWAY WUXIN HEAVY IND CO LTD
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Patent Information

Application Number
CN202411944345.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-03-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the gantry crane is lowered, the wire rope is prone to being fully relaxed, resulting in a large amount of downs, which can easily lead to damage to the wire rope, drum, reducer and other components, posing a major safety hazard.

Method used

By introducing a lifting motor control module, a first load detection module and a second load detection module into the crane, the working current of the lifting motor mechanism is monitored in real time. When the current reaches a specific reference value, the feedback signal is feedback to control the working state of the lifting motor mechanism, ensuring that the wire rope is in a tightening state with a certain load when the grab is lowered.

Benefits of technology

It effectively avoids excessive slack of wire ropes, reduces damage to wire ropes, drums, reducers and other components, improves the operating stability of crane equipment, and reduces safety hazards.

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Abstract

The invention discloses a portal crane control system and method and a portal crane. The portal crane control system comprises a crane foundation control system; the lifting motor mechanism is connected with the crane foundation control system and is used for driving the grab bucket to move up and down; the lifting motor control module is electrically connected with the lifting motor mechanism; the first load detection module and the second load detection module are electrically connected with the lifting motor mechanism; when the first load detection module detects that the working current of the lifting motor mechanism is at a first reference value, a first signal is fed back to the lifting motor control module; when the second load detection module detects that the working current of the lifting motor mechanism is at a second reference value, a second signal is fed back to the lifting motor control module; according to the scheme, the problems that due to the fact that the steel wire rope of the grab bucket of the gantry crane is in a fully-relaxed state, the steel wire rope, a winding drum, a speed reducer and other parts are prone to damage, normal work of equipment is affected, and large potential safety hazards exist can be solved, and stable operation of the crane equipment is guaranteed.
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