Middle plate of machine body of unmanned helicopter

Abstract

The invention discloses a middle plate of a machine body of an unmanned helicopter. The middle plate is used for matching with an upper plate of the machine body for fixing a main shaft to a machine body frame, and meanwhile, the middle plate is used for fixing a second-stage shaft; a first-stage lower bearing block installing hole is formed in one side of the middle plate; multiple lower bearing seat fixing screw holes are formed in the edge of the first-stage lower bearing block installing hole along the circumferential direction; a second-stage bearing block installing groove is formed in the other opposite side of the middle plate; multiple second-stage bearing block fixing screw holes are formed in two sides of the second-stage bearing block installing groove; symmetric planes of the first-stage lower bearing block installing hole and the second-stage bearing block installing groove are coplanar; installing bosses are arranged on the edges of other two sides of the middle plate, and welding grooves are formed in the installing bosses. The middle plate of the machine body of the unmanned helicopter, disclosed by the invention, is simple in structure, reasonable in design, convenient to install, large in bearing capacity and strong in structure stability, the main shaft and the second-stage shaft are fixed, and meanwhile, the installation reasonability of the main shaft and the second-stage shaft is ensured.

Description

technical field [0001] The invention relates to an unmanned helicopter component, in particular to a middle plate of an unmanned helicopter fuselage. Background technique [0002] The structural forms of unmanned helicopters are mainly divided into multi-rotor and single-rotor helicopters. For single-rotor unmanned helicopters, the power transmission form and propeller rotation performance are the decisive factors affecting the performance of the helicopter. Single-rotor helicopters provide lift through the main rotor and turn the helicopter through the tail rotor. There is therefore a need for a primary shaft which provides rotation of the main rotor and a secondary shaft which indirectly provides rotation of the tail rotor. Whether the installation and fixation of the main shaft and the secondary shaft is reasonable directly determines the flight stability of the helicopter. [0003] At present, the main shaft and the secondary shaft are mostly fixed on the fuselage fram...

AI Technical Summary

Problems solved by technology

[0003] At present, the main shaft and the secondary shaft are mostly fixed on the fuselage frame through different fixing plates. Due to installation and manufacturing errors, the central axes of the main shaft and the secondary shaft are easily not parallel to each other. , and the central axis of the main shaft or the central axis of the secondary shaft is not on the plane of symmetry of the fuselage frame

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