CN205076044U - Oil moves four rotor unmanned aerial vehicle power - transmission system of displacement - Google Patents

Abstract

The utility model discloses a power-transmission system of an oil-driven variable-distance four-rotor unmanned aerial vehicle, which includes a power subsystem and a transmission subsystem, and the power subsystem and the transmission subsystem are connected through a synchronous belt of the transmission subsystem; the power subsystem The system includes the engine body and its related auxiliary systems; the transmission subsystem includes: the primary transmission system, the secondary transmission system, and the main transmission shaft connecting the primary transmission system and the secondary transmission system, the slave transmission shaft and the reversing gear; the The primary transmission system includes a small primary pulley, a large primary pulley, and a primary belt connecting the small primary pulley and the large primary pulley; the main drive shaft is connected to the large primary pulley, two small secondary belts The primary reversing gear of the wheel; the secondary transmission system includes a secondary small pulley, a secondary large pulley, and a secondary belt connecting the secondary small pulley and the secondary large pulley. The four secondary small pulleys are respectively The power is transmitted to the two-stage large pulley, and the four rotor shafts are respectively driven to realize power transmission.

Description

A power-transmission system of a four-rotor UAV with oil-driven variable pitch

technical field

The utility model relates to the field of aviation technology, in particular to a power-transmission system of a four-rotor unmanned aerial vehicle with oil-driven variable pitch.

Background technique

The main mechanical structure of conventional electric multi-rotor drones (as shown in Figure 4) is the frame (or frame plus foldable arms), and the main components are batteries, ESCs, motors, flight controllers, and propellers. The rotational speed realizes the control of the aircraft. Its biggest advantage is that the system is simple, the cost is low, and the technical threshold of manual flight control and flight control system is relatively low. However, due to the limitation of battery energy density, its flight time is generally only 10-30 minutes, and the way of increasing its flight time by simply increasing the number of batteries will greatly reduce its load capacity. Compared with oil-powered multi-rotor drones, the biggest problem with electric multi-rotor drones (including electric helicopters) is poor endurance performance.

Utility model content

In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a four-rotor UAV with variable pitch, which has the advantages of large load and long flight time, and at the same time reduces the purchase, use and maintenance costs and the technical threshold of use and maintenance. The oil-driven four-rotor UAV is powered by a single oil-powered engine, and its power-transmission system is its core technology. Therefore, the utility model solves the problem of power transmission from a single engine to four rotors of an oil-driven variable-pitch four-rotor UAV, and provides strong technical support for completely solving the problems of multi-rotor load and flight time.

The technical scheme adopted in the utility model is:

A power-transmission system of a four-rotor UAV with oil-driven variable pitch, which mainly includes a power subsystem and a transmission subsystem. The position connection relationship between them is: the power subsystem and the transmission subsystem are connected through the timing belt of the transmission subsystem.

The power subsystem includes: the engine body and its related auxiliary systems (radiation system, exhaust system and power generation system); the transmission subsystem includes: the primary transmission system, the secondary transmission system and the connection between the primary transmission system and the secondary transmission The main drive shaft, slave drive shaft and reversing gear of the system. The primary transmission system consists of a small primary pulley, a large primary pulley, and a primary belt connecting the small primary pulley and the large primary pulley. The main transmission shaft is connected with a first-stage large pulley, two second-stage small pulleys and a first-stage reversing gear. Part of the power is split to two secondary small pulleys, and the remaining power is transmitted to the slave transmission shaft through a pair of reversing gears, and then further transmitted to the other two secondary small pulleys. The secondary transmission system includes a secondary small pulley, a secondary large pulley, and a secondary belt connecting the secondary small pulley and the secondary large pulley. The four secondary small pulleys transmit power to the secondary large belt respectively. The four rotor shafts are respectively driven on the wheels to realize power transmission.

Advantages and effects: Compared with the prior art, the utility model has the beneficial effect of solving the problem of power transmission from a single engine to four rotors of an oil-operated pitch-variable four-rotor UAV, and in order to completely solve the load and flight time of multi-rotors The problem provides strong technical support.

Description of drawings

Figure 1 Typical structure diagram of conventional electric multi-rotor UAV.

Fig. 2 Structural diagram of four-rotor UAV with oil dynamic variable pitch.

Fig. 3 Schematic diagram of the power-transmission system of the four-rotor UAV with variable pitch.

Figure 4. Schematic diagram of the transmission subsystem of the four-rotor UAV with oil-driven variable pitch.

The reference signs are as follows:

1-rotor-manipulation system; 2-power system-transmission system; 3-frame system;

4-power subsystem, 5-transmission subsystem;

6-first-level small pulley; 7-first-level belt; 8-first-level large pulley; 9-main drive shaft; 10-secondary small pulley; 11-secondary belt; 12-secondary large pulley; 13-level reversing gear; 14-slave transmission shaft;

detailed description

The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

Referring to Fig. 1-Fig. 4, in order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a power-transmission system of an oil-operated pitch-variable four-rotor UAV, which solves the problem that the oil-operated pitch-variable quadrotor UAV is controlled by a single The problem of power transmission from the engine to the four rotors provides a strong technical support for completely solving the problems of multi-rotor load and flight time.

Referring to Fig. 3, the power-transmission system of the four-rotor unmanned aerial vehicle with variable pitch of the present embodiment comprises a power subsystem 4 and a transmission subsystem 5, and the power subsystem 4 includes an engine body and related auxiliary systems (cooling system, exhaust system and power generation system).

Referring to Fig. 4, the transmission subsystem 5 related to the power-transmission system of the four-rotor unmanned aerial vehicle with variable pitch in this embodiment mainly consists of the following: a primary belt 7 connects a primary small pulley 6 and a primary large pulley 8, The main transmission shaft 9 is connected with a primary pulley 8, two secondary pulleys 10 and a reversing gear 13. Part of the power is split to the two secondary small pulleys 10 , and the remaining power is transmitted to the secondary transmission shaft 14 through the primary reversing gear 13 , and then further transmitted to the other two secondary small pulleys 10 . The secondary belt 11 connects the secondary small pulley 10 and the secondary large pulley 12, and the four secondary small pulleys 10 transmit power to the secondary large pulley 12, respectively driving the four rotor shafts to realize power transmission .

The utility model has the beneficial effects of solving the problem of power transmission from a single engine to four rotors of an oil-driven variable-pitch four-rotor UAV, and providing strong technical support for completely solving the problems of multi-rotor load and flight time.

Claims (1)

1. an oil moves displacement four rotor wing unmanned aerial vehicle Power-drivetrain system system, and it is characterized in that: it comprises power sub-system and drive subsystem, power sub-system is connected with the Timing Belt of drive subsystem by drive subsystem;

This power sub-system comprises: engine body and associated satellite system thereof and cooling system, exhaust system and power generating system; This drive subsystem comprises: primary transmission system, secondary driving system and connect primary transmission system and secondary driving system main driving axle, from transmission shaft and reversing gear; This primary transmission system comprises one-level small pulley, the large belt wheel of one-level, and connects the one-level belt of one-level small pulley and the large belt wheel of one-level; Main driving axle connects the large belt wheel of one-level, two secondary small pulley one-level reversing gears; Part power is divided to two secondary small pulleys, and excess power is delivered to from transmission shaft by a pair reversing gear, thus is delivered to two other secondary small pulley further; This secondary driving system comprises the second belt of secondary small pulley, the large belt wheel of secondary and connection secondary small pulley and the large belt wheel of secondary, four secondary small pulleys respectively by transmission of power on the large belt wheel of secondary, drive four rotor shaft respectively, realize the transmission of power.