Bucket wheel machine movable beam deviation rectifying device and method thereof

By combining electromagnets and magnetorheological elastomer pads with antagonistic hydraulic cylinders, the correction process of the movable beam is dynamically adjusted, solving the problems of stick-slipping and stress concentration of the movable beam of the bucket wheel excavator under heavy load, and achieving a stable and safe correction effect.

CN122276469AActive Publication Date: 2026-06-26HUADIAN CAOFEIDIAN HEAVY IND +1
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Patent Information

Application Number
CN202610759460.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-29
Publication Date
2026-06-26
Estimated Expiration
2046-05-29

AI Technical Summary

Technical Problem

The existing bucket wheel excavator's movable beam is prone to stick-slip bouncing and stress concentration when it is laterally corrected under heavy load, making it difficult to achieve smooth and continuous correction and structural safety.

Method used

An electromagnet and magnetorheological elastomer pad are used in combination with left and right antagonistic hydraulic cylinders. The controller calculates the resistance-thrust-stiffness mismatch index and dynamically adjusts the electromagnetic attraction and pad stiffness. This, in conjunction with the main drive hydraulic cylinder, achieves the lateral repositioning of the movable beam.

Benefits of technology

It effectively reduces lateral correction resistance, eliminates stick-slip and jumping phenomena, improves the stability of correction and structural safety, and avoids equipment wear and cracking.

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Abstract

The invention relates to the field of large bulk material carrying machinery, in particular to a bucket wheel machine walking beam deviation rectifying device and method. The device comprises a movable beam, a trolley, a walking wheel carrier with an electromagnet, a magnetorheological elastomer base plate, a main driving hydraulic cylinder, antagonism hydraulic cylinders which are communicated in a crossed mode, a controller and the like. The system calculates a resistance thrust stiffness mismatch index through a controller, triggers an electromagnet to generate an upward suction force to reduce the contact positive pressure of a traveling wheel when the resistance thrust stiffness mismatch index exceeds a threshold value, and synchronously reduces the elastic modulus of a base plate to release transverse restraint; the core is that electromagnetic attraction and a variable-stiffness base plate are used for synergistically reducing resistance, and a main driving hydraulic cylinder is matched to push a movable beam to transversely reset; a traditional rigid transverse pushing mode under heavy load is abandoned, thrust needed by transverse resetting is remarkably reduced, the problems that stick-slip jumping and stress concentration are prone to being caused are effectively solved, and stable deviation rectification is achieved.
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