Actuator device for compressor intake valve, intake valve, and mining machine

The actuator device with a changing lever mechanism transmission ratio addresses the challenge of controlling intake valves in mining machines, providing stable and precise control for varying air demands.

JP2026523224APending Publication Date: 2026-07-13SANDVIK MINING & CONSTR OY
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Patent Information

Application Number
JP2025575847
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-06-30
Filing Date
2024-06-17
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

Existing mining machines face challenges in reliably controlling the gradual opening of intake valves to meet varying air demand requirements, particularly for different excavation unit sizes.

Method used

An actuator device for an intake valve that utilizes a linear actuator connected via a lever mechanism, where the transmission ratio of the lever mechanism changes during the movement of the movable element, allowing for progressive actuation and precise control of the intake valve.

Benefits of technology

Enables stable and precise control of intake valves, even at small flow channel openings, adapting to different air demands and ensuring consistent performance across varying operating conditions.

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Abstract

An actuator device (1) for the intake valve of a compressor system of a mining machine, the actuator device comprising a linear actuator (11) including a movable element (10) operably connected to the shaft (4) of the closing element (3) of the intake valve via lever mechanisms (6, 7, 8, 9; 6, 7, 8, 9, 91, 92). The linear motion of the movable element (10) of the linear actuator (11) is transmitted to the rotational motion of the shaft (4) of the closing element (3) of the intake valve via lever mechanisms, and the transmission ratio of the lever mechanisms is configured to change during the movement of the movable element (10) of the linear actuator (11).
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