Single-motor two-section driving rotary actuator

Abstract

The invention discloses a single-motor two-section driving rotary actuator which comprises a first rotating shaft, a transmission shaft, a motor and a second rotating shaft, a first external connection gear is arranged on the first rotating shaft, the rotatable transmission shaft is sleeved with one end of the first rotating shaft, the motor connected with the transmission shaft is installed on one side of the first rotating shaft, and a sun gear is sleeved with the transmission shaft. A mounting part is formed on the first rotating shaft on the outer side of the sun gear, a plurality of rotatable planet gears are processed on the mounting part, the plurality of planet gears are meshed with the sun gear, a second rotating shaft in clearance fit sleeves the outer side of the first rotating shaft, an inner gear ring meshed with the plurality of planet gears is coaxially mounted at one end of the second rotating shaft, and a second external connection gear is arranged on the second rotating shaft; a first brake is installed on the first rotating shaft, and a second brake is installed on the second rotating shaft. The rotary actuator has the advantages of being small in occupied space and light in weight and can be installed in the wing, the influence of the wing structure is small, and the aerodynamic performance of the wing surface cannot be damaged.

Description

technical field [0001] The invention relates to the field of wing folding, in particular to a rotary actuator driven by a single motor in two stages. Background technique [0002] The wings of existing aviation equipment are mainly driven by hydraulic cylinders for folding. When the wings are folded, the output torque of the rotating mechanism that controls the folding of the wings needs to be large enough, and at the same time, it needs to be small in size and light in weight. However, there are the following problems in the existing hydraulic cylinders to drive the wing folding: 1. The hydraulic cylinders are large in size and heavy, which will increase the weight of aviation equipment; 2. The moment radius of the hydraulic cylinders is small. The size of the hydraulic cylinder needs to be further enlarged, so that the weight will increase again; 3. The hydraulic cylinder will occupy the spanwise dimension of the wing, which will affect the layout of the wing fuel tank on ...

AI Technical Summary

Problems solved by technology

However, there are the following problems in the existing hydraulic cylinders to drive the wing folding: 1. The hydraulic cylinders are large in size and heavy, which will increase the weight of aviation equipment; 2. The moment radius of the hydraulic cylinders is small. The size of the hydraulic cylinder needs to be further enlarged, so that the weight will increase again; 3. The hydraulic cylinder will occupy the spanwise dimension of the wing, which will affect the layout of the wing fuel tank on the one hand and destroy the aerodynamic performance of the wing on the other hand; 4. The hydraulic cylinder can only realize a single folding of the wing, and the hydraulic cylinder has poor ability to hold the position of the wing, which will affect the stability of the wing during the unfolding process

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