Front wheel steering mechanism suitable for unmanned aerial vehicle

Abstract

The invention provides a front wheel steering mechanism suitable for an unmanned aerial vehicle, belongs to the technical field of unmanned aerial vehicles, and solves the problem of incapability of controlling and measuring the vibration in the prior art. A rotating shaft is fixedly connected with a front plate lifting spring; a bearing block is connected to an installation pedestal and connected with the rotating shaft through a thrust bearing and two rolling bearings, and the rotating shaft and the inner rings of the rolling bearings are compressed by a compression nut and a washer; a tapered pin is installed on the rotating shaft; the outer ring of damping rubber is sleeved in a square hole of a steering support; a steering block is installed in an inner hole of the damping rubber; the steering block and the front plate lifting spring are fixedly connected by steering block fixing bolts; a shaft sleeve is installed on the rotating shaft and positioned on the steering support; a steering rocker arm is installed on the shaft sleeve and connected with the steering support through a compression bolt, a spring and a steel ball; the steel ball is embedded into a tapered hole in the steering support; the spring is positioned on the steel ball and then compressed by the compression bolt; the steering rocker arm is connected with a steering engine rocker arm through a connecting rod to form a four-connecting rod mechanism, to drive the steering support to rotate; the steering engine rocker arm is connected with the output shaft of a steering engine.

Description

technical field [0001] The invention relates to a front wheel steering mechanism suitable for unmanned aerial vehicles, belonging to the technical field of unmanned aerial vehicles. Background technique [0002] The front wheel steering mechanism of the UAV is especially important for the take-off and landing process of the UAV. In order to prevent the UAV from rushing out of the runway before take-off, it is necessary to ensure that the UAV slides on the runway in a specified straight line. In order to realize that the drone glides in a straight line, it can be realized by various methods such as main wheel differential braking, front wheel steering, and rudder deviation correction, or a combination thereof. But in actual operation, the front wheel steering has the most obvious effect in ensuring that the drone glides in a straight line. For example, when using the main wheel differential brake to correct the deviation, when the two main wheels adjust the braking force, th...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the prior art cannot control and measure the angular vibration of the front wheel around the axis of rotation, the present invention provides a UAV front wheel that can realize mechanical limit, steering gear overload protection and damping and shock absorption during the front wheel steering process. steering mechanism

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