Control range limiting mechanism

Abstract

The invention discloses a control range limiting mechanism and belongs to the technical field of aircraft control mechanism design. The control range limiting mechanism comprises a shell, a pin shaft, an outer rocker arm, an inner rocker arm, limiting blocks, a lead screw, a speed reducer and a motor. One end of the outer rocker arm is hinged to a control lever through double lugs, the other end of the outer rocker arm is connected with the inner rocker arm through the pin shaft, and one end of the pin shaft is fixed to the interior of the shell; one end of the lead screw is connected with the speed reducer, and the other end of the lead screw is connected to the shell; the lead screw is provided with two threaded sections which are opposite in rotating direction and symmetrical left and right, and the limiting blocks are installed on the threaded sections correspondingly; and one end of the inner rocker arm is limited between the two limiting blocks, a motor is started to drive the speed reducer to operate so that the two limiting blocks on the lead screw can make approaching or departing movement relative to the inner rocker arm, and thus the adjusting range of the inner rocker arm is adjusted. According to the control range limiting mechanism, the structure is simple, continuous limiting can be achieved easily, the rocker arm swing angles of the control range limiting mechanism can be limited to be any angle between the minimum swing angle and the maximum swing angle, and stepless adjusting for the angles of the swing rocker arms is achieved.

Description

technical field [0001] The invention belongs to the technical field of aircraft control structure design, and in particular relates to a control range limiting mechanism. Background technique [0002] The control range limiting mechanism is a key mechanism set up to limit the aircraft control system to a certain range. The traditional control range limiting mechanism is in the form of a stop pin, which limits the range of motion of the swing arm through the rigid contact between the swing arm and the stop pin. The limit angle is a fixed value. When manipulating the range, the limit angle needs to be manually adjusted, and cannot be changed at any time during use. Contents of the invention [0003] Purpose of the present invention: In order to solve the above-mentioned problems, the present invention proposes a control range limiting mechanism, which can overcome the shortcomings of traditional mechanism that the limit angle needs to be manually adjusted, and cannot be adj...

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Problems solved by technology

[0003] Purpose of the present invention: In order to solve the above-mentioned problems, the present invention proposes a control range limiting mechanism, which can overcome the shortcomings of traditional mechanism that the limit angle needs to be manually adjusted, and cannot be adjusted at any time, so that the swing angle of the rocker arm is between the minimum swing angle and The maximum swing angle can be adjusted steplessly at any time

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