A multi-directional bearing sealed rotary shaft system for lidar scanning rotating mirror

Abstract

The invention provides a multi-item bearing seal rotary shaft system used for a laser radar scanning rotating mirror. The rotary shaft system comprises a base, the base is provided with shaft holes, the laser radar scanning rotating mirror rotary shaft and a drive rotary shaft are installed in the shaft holes, and the rotary shaft system further comprises a crossed pin roller shaft ring installed between the base and the laser radar scanning rotating mirror rotary shaft and the drive shaft. An outer bearing pressing ring is pressed on the crossed pin roller shaft ring. A radial fiber reinforcement oil seal is arranged between the outer bearing pressing ring and the laser radar scanning rotating mirror rotary shaft to achieve rotary sealing. The radial fiber reinforcement oil seal is adopted for obtaining the waterproof and dustproof shaft system in the natural environment, and gas exchanging between the inside of a cabin and the outside of the cabin can be prevented. The crossed pin roller shaft ring is adopted for bearing the radial load, axial load and torque load. An internal pressure bearing wedge-shaped ring and an external pressure bearing wedge-shaped ring are used for reinforcing the bearing pressure inside and outside the fiber reinforcement radial oil seal. The effects that the shaft system is convenient and rapid to lubricate and maintain, and sealing is good are achieved.

Description

technical field [0001] The invention relates to a rotary shaft, in particular to a sealed rotary shaft system used for multi-directional loading of a laser radar scanning rotary mirror. Background technique [0002] The rotary equipment of the lidar scanning mirror used in the outdoor natural environment, the external environment is waterproof and dustproof, and the labyrinth sealing method is usually adopted. The labyrinth sealing can achieve the purpose of preventing rainwater from entering, but because it is not isolated and sealed, there will still be a breathing effect. There is gas exchange inside and outside the equipment, so that external water vapor enters the inside of the equipment, which affects the equipment; the multi-directional bearing of the commonly used rotary shaft system usually adopts angular contact ball bearings installed in pairs, and the axial and radial dimensions are large, which is not conducive to the equipment. Miniaturization of structures. F...

AI Technical Summary

Problems solved by technology

[0002] The rotary equipment of the lidar scanning mirror used in the outdoor natural environment, the external environment is waterproof and dustproof, and the labyrinth sealing method is usually adopted. The labyrinth sealing can achieve the purpose of preventing rainwater from entering, but because it is not isolated and sealed, there will still be a breathing effect. There is gas exchange inside and outside the equipment, so that external water vapor enters the inside of the equipment, which affects the equipment; the multi-directional bearing of the commonly used rotary shaft system usually adopts angular contact ball bearings installed in pairs, and the axial and radial dimensions are large, which is not conducive to the equipment. structure miniaturization

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