US 2026/0291329 A1Published application

Crankshaft-based dual-axis scanning drive mechanism

AssigneeViettel Group

InventorsXUAN BACH LUU, THI HANG LE, HOAI SON NGUYEN

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Abstract

A crankshaft-based dual-axis scanning drive mechanism is disclosed. The mechanism is configured to generate controlled scanning rotational motion about two substantially perpendicular axes, including a horizontal axis and a vertical axis. Rotational motion is transmitted through a crankshaft-connecting rod linkage system, wherein the horizontal and vertical rotation shafts intersect to define a common rotational center, and the driving motors are positioned away from the rotational center. The drive mechanism comprises a base assembly, a rotating assembly, and a device assembly, with motors arranged away from the rotational center to reduce structural mass and improve spatial efficiency. Position sensors and angular velocity sensors are arranged concentrically with the rotation shafts to provide accurate motion feedback. The disclosed mechanism is suitable for use in scanning, tracking, communication, radar, and meteorological devices requiring compact size, smooth motion, and high positional accuracy.

Claims6

Dependent claims

A crankshaft-based dual-axis scanning drive mechanism, comprising:

a base assembly including a main base and a hollow frame;
a horizontal-axis motor mounted to the base assembly and configured to generate rotational motion about a horizontal axis;
a vertical-axis motor configured to generate rotational motion about a vertical axis;
a main support pedestal mounted on the hollow frame;
a horizontal rotation shaft supported at opposite ends by the main support pedestal;
a vertical rotation shaft arranged perpendicular to and intersecting the horizontal rotation shaft;
a device assembly;
a coupling having two cylindrical shaft ends arranged perpendicular to each other;
a connecting rod driven by the vertical-axis motor and configured to oscillate through a predetermined angular range;
a first crankshaft and a second crankshaft, each crankshaft comprising an upper end and a lower end,
wherein each lower end is coupled to a corresponding end of the connecting rod via the coupling so as to be driven by the connecting rod, and
wherein each upper end is coupled to the device assembly via the coupling so as to drive the device assembly to rotate about the vertical axis.

9 more elements

Dependencies are inferred from the claim text.