A dual-linkage front wheel steering mechanism with large steering angle

Abstract

The invention belongs to the field of aviation, and in particular relates to a front wheel steering mechanism with double linkage and large control angle. The feature of this mechanism is that two push-pull actuators are superimposed through relay installation, so that the rotation angle is greatly increased. The upper sleeve (3) and the lower sleeve (7) equipped with the secondary actuator (2) are integrally pushed by the actuator (5) to realize the first stage of rotation. When the primary actuator (5) reaches After the limit position, the secondary actuator (2) can continue to push the output sleeve (4) to move to realize the second stage of movement. The primary actuator (5) and the secondary actuator (2) can move separately, and the stationary actuator is stopped and transmitted through a hydraulic oil lock, mechanism self-locking or electric phase-locking device. At the same time, double actuators can provide redundancy and improve reliability. Adopting the mechanism can realize high-power forward turning, and can realize the demand of carrier-based aircraft and civil aircraft for large turning angle of front wheel power.

Description

technical field [0001] The invention belongs to the field of aviation, and in particular relates to a front wheel steering mechanism with double linkage and large control angle. Background technique [0002] The push-pull front wheel steering drive method is widely used in various types of front wheel steering system drives due to its large moment arm, high efficiency, simple and reliable mechanism, etc. However, the conventional single-acting force arm driving method often cannot turn too large due to the limitation of the structural form, otherwise the force arm of the driving force of the actuator will be too small or cause structural collision interference. Due to the limitations of its mechanism characteristics, the structural form of using a special mechanism to enlarge the turning angle, the power turning angle cannot be too large, and there are many mechanisms involved, difficult to adjust, and difficult to maintain, so the reliability is not high. However, in field...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the structure, the conventional single-acting force arm driving method often cannot turn too large, otherwise the force arm of the driving force of the actuator will be too small or cause structural collision interference.

Due to the limitations of its mechanism characteristics, the structural form of using a special mechanism to enlarge the turning angle cannot be too large, and it involves many mechanisms, difficult adjustments, and difficult maintenance, so the reliability is not high.

However, in the fields of carrier-based aircraft and civil aircraft, the front wheel power control angle is often required to be greater than ±90°. At this time, it is even more difficult to achieve the required angle with a single-action driving method.

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