Four-rotor aircraft rack with capacity of automatic folding and spreading

A four-rotor aircraft and frame technology, which is applied in the direction of rotorcraft, aircraft, motor vehicles, etc., can solve the problems of reduced structural size, large geometric size, and inconvenient portability, and achieve reduced geometric size, light weight, and energy saving. Effect

Inactive Publication Date: 2015-01-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the supporting arms of the common quadrotor aircraft are mostly integral structures, and are integrated with the fuselage. The geometric size is large and it is not easy to carry.
Even though some quadrotors use a foldable support arm structure to reduce the size of the structure, these structures require operators to fold and unfold them during use, causing inconvenience

Method used

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  • Four-rotor aircraft rack with capacity of automatic folding and spreading
  • Four-rotor aircraft rack with capacity of automatic folding and spreading
  • Four-rotor aircraft rack with capacity of automatic folding and spreading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as Figure 1-7 As shown, the self-folding quadrotor frame consists of figure 1 Parallelogram mechanism; figure 2 Support arm, center plate part; image 3 A system that integrates the rotor baffle and the limit buckle.

[0018] Such as figure 1 , is a parallelogram mechanism: 2 lower center plates, 3 crank upper discs, 5 short sleeves, 6 crank middle discs, 7 crank lower discs, 8 connecting rods, 11 connectors, 12 long steel shafts, 13 long sleeves, 18 worm gears Worm geared motor. The rack of parallelogram mechanism is determined by the connecting line of the center of 2 lower central plates and the axis of 11 connectors. The crank is composed of 3 crank upper plates, 6 crank middle plates, 7 crank lower plates and short steel shafts and short sleeves in the middle. The 8 connecting rods of the support arms A and B are between the 3 crank upper plates and the 6 crank middle plates. Plane; the plane between the connecting rod 8 of the support arms C and D bet...

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Abstract

The invention acquires design inspiration from a mechanical aperture tuning mechanism of a camera lens, and designs an automatic folding rack comprising a central worm and gear speed reduction motor, an upper center plate, a lower center plate, a crank, connecting rods, support arms and rotor baffles. Therefore, a four-rotor aircraft can be folded to a compact square structure under the driving of the motor distributed in the center of the rack, end parts of adjacent rotors are close to the peak of the square as far as possible, positions of the rotors are relatively fixed, and accordingly, the geometric dimensioning of the four-axis aircraft is greatly reduced; and the four-rotor support arms can be spread automatically when the central motor rotates reversely.

Description

technical field [0001] The invention belongs to the field of aircraft design, and in particular relates to a four-rotor aircraft frame capable of autonomous folding and unfolding. Background technique [0002] Quadrotor aircraft is a relatively common and classic small aircraft, which is widely used in technical fields such as military reconnaissance, resource survey, and civil aerial photography. The aircraft is compact in structure and flexible in movement, and is suitable for use in narrow spaces or complex environments. However, the support arms of common quadrotor aircraft are mostly integral structures, and are integrated with the fuselage. The geometric size is relatively large, and it is not easy to carry. Even though some quadrotor aircraft adopt a foldable support arm structure to reduce the size of the structure, these structures require operators to fold and unfold them during use, causing inconvenience. In order to improve the convenience and flexibility in ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/08B64C27/32
Inventor 罗庆生孙泽源高枫刘弘扬卢宛萱马红涛冯雪贝
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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