Integrated involute rocker arm electric steering gear

Abstract

The invention discloses an integrated involute rocker arm electric steering gear which comprises a steering gear housing, a motor stator, a planetary roller screw reducer, a motor front bearing, a front end cover, a motor rear bearing, a rear end cover, an involute rocker arm and an integrated rudder. The electric steering gear adopts an integrated steering gear shell design, and the motor, the planetary roller screw reducer, a screw driving shaft and control surface mounting holes are all disposed on the integrated steering gear housing; a motor rotor is also a screw nut of the planetary roller screw reducer, so that the problems that a previous control surface driving mechanism has complex structure, large size and large mass are solved; in addition, a linear rocker arm is changed into the involute rocker arm, thereby ensuring that an acting force between the screw driving shaft and the involute rocker arm is constant, and also ensuring that a stroke of the screw driving shaft and adeflection angle of a control surface are in a linear relationship; the problem of nonlinear fluttering of conventional control surface driving is solved. Compared with the structural design of a traditional steering gear, the structural design of the electric steering gear has a length reduction of about 20% and a weight reduction of about 20%.

Description

technical field [0001] The invention relates to the technical field of deceleration transmission of aircraft and missile rudder surface drive mechanisms, in particular to an integrated involute rocker electric steering gear. Background technique [0002] It is known that the existing aircraft and missile rudder drive deceleration and transmission structures are composed of discrete components such as motors, reducers, lead screws, and linear rocker arms, which have problems such as complex structure, large volume, and high quality. The force between the rocker arms and the deflection angle of the rudder surface has a nonlinear relationship, and there is a problem of nonlinear flutter in the process of driving the rudder surface deflection; and with the development of aircraft and missile technology, the rudder surface drive mechanism has a large volume, Higher and higher requirements are put forward for quality and nonlinear flutter, and the traditional rudder surface drive ...

AI Technical Summary

Problems solved by technology

[0002] It is known that the existing aircraft and missile rudder drive deceleration and transmission structures are composed of discrete components such as motors, reducers, lead screws, and linear rocker arms, which have problems such as complex structure, large volume, and high quality. The force between the rocker arms and the deflection angle of the rudder surface has a nonlinear relationship, and there is a problem of nonlinear flutter in the process of driving the rudder surface deflection; and with the development of aircraft and missile technology, the rudder surface drive mechanism has a large volume, Higher and higher requirements are put forward for quality and nonlinear flutter, and the traditional rudder surface drive mechanism can no longer meet the design requirements

Images