Unmanned aerial vehicle centering device based on steering engine

Abstract

The unmanned aerial vehicle centering device comprises a centering bottom plate and a plurality of steering engine centering mechanisms, the steering engine centering mechanisms are distributed on the peripheral edge of the centering bottom plate, each steering engine centering mechanism comprises a steering engine, a steering wheel, a crank, a connecting piece, a connecting rod, a middle shaft, a sliding block and a shaft sleeve, the steering wheels are arranged on the left side and the right side of the steering engine respectively, and the crank is arranged on the steering engine centering mechanism. Each steering wheel is connected with a crank, each crank is connected with a connecting rod, one end of each crank is connected to the corresponding steering wheel, the other end of each crank is connected to one end of the corresponding connecting rod, the two cranks are connected through a connecting piece, the middle shaft is divided into a left part, a middle part and a right part, and the other ends of the two connecting rods are connected to the middle of the middle shaft. And the tail ends of the left and right parts of the middle shaft are locked by shaft sleeves. The utility model has the advantages of simple and reliable structure, small mechanism volume and low maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a centering device for unmanned aerial vehicles based on a steering gear. Background Art

[0002] A drone airport, also known as a drone nest or drone hangar, is a facility specifically used for drone takeoff and landing, maintenance, charging, storage, etc. It has a helipad inside, where drones land and wait after returning.

[0003] Due to the influence of wind interference, GPS positioning drift, airport displacement and other factors during the landing process of drones, drones often cannot land accurately at the designated location, which in turn affects the storage and restart of drones at the drone airport. Therefore, the apron needs a device to move and fix the drone to the designated location, which is collectively called a centering device.

[0004] The current drone centering device uses a motor to drive a synchronous belt, which drives the centering rod to center the drone. However, the synchronous belt has a short lifespan, is easily worn, and requires frequent replacement and maintenance. At the same time, drone airports often work in outdoor environments, and some environmental factors such as ultraviolet rays, temperature, and humidity may accelerate the aging of the synchronous belt, which affects the reliability of the equipment to a certain extent and has a high maintenance cost. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings and disadvantages of the prior art and provide a UAV centering device based on a servo, which has the characteristics of simple structure, strong stability and easy maintenance. By converting the rotational motion of the steering wheel of the servo into the linear motion of the slider, the UAV can be moved to the specified position, thereby realizing the centering of the UAV.

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a centering device for a UAV based on a servo, comprising a centering bottom plate and a servo centering mechanism, wherein the servo centering mechanism has multiple members distributed around the edges of the centering bottom plate, each servo centering mechanism comprises a servo, a steering wheel, a crank, a connecting piece, a connecting rod, a central axis, a slider and a bushing, there is a servo on the left and right sides of the servo, each servo is connected to a crank, each crank is connected to a connecting rod, one end of the crank is connected to the servo, and the other end is connected to one end of the connecting rod, and the two cranks are connected by a connecting piece to maintain synchronous movement, the central axis is divided into three parts: left, middle and right, the other ends of the two connecting rods are connected to the middle part of the central axis, the left and right parts of the central axis are both equipped with sliders, and the ends of the left and right parts of the central axis are both locked by bushings.

[0007] Preferably, a sliding block is mounted on the middle portion of the central shaft, and the sliding block is located between the two connecting rods.

[0008] Preferably, at least two sliding blocks are mounted on both the left and right parts of the central axis.

[0009] Preferably, the sliding block is a rectangular block, a circular through hole is passed through the center of the side surface, and a bearing is embedded inside.

[0010] Preferably, a pulley is provided at the bottom of the sliding block.

[0011] Preferably, the centering bottom plate is a square plate, and there are four servo centering mechanisms, which are respectively installed at the midpoints of the four sides of the centering bottom plate.

[0012] Preferably, the relative position between the central axis and the connecting rod is fixed.

[0013] Preferably, the crank is an L-shaped crank.

[0014] Preferably, the central axis is a linear optical axis.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The overall structure of the utility model is simple and reliable, the manufacturing and maintenance costs are lower, and it is economical and practical.

[0017] 2. The L-shaped crank used in the utility model makes the volume of the steering gear centering mechanism smaller when compressed, which can save space in the UAV airport and reduce the difficulty of installation.

[0018] 3. The coupling degree between the steering gear centering mechanism and the centering bottom plate of the utility model is low, and there is no need to design an additional structure for the centering bottom plate.

[0019] 4. The bottom of the slider used in the utility model is provided with a pulley, which does not require additional lubrication and improves the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the UAV centering device when compressed in this embodiment.

[0021] Figure 2 Schematic diagram of the structure of the drone centering device in this embodiment when extended.

[0022] Figure 3 Schematic diagram of the structure of the steering gear centering mechanism in this embodiment.

[0023] Figure 4 Schematic diagram of the structure of the pulley in this embodiment.

[0024] In the figure: 1. centering bottom plate; 2. steering gear centering mechanism; 3. steering gear; 4. steering wheel; 5. crank; 6. connecting piece; 7. connecting rod; 8. center shaft; 9. slider; 10. bushing; 11. pulley. DETAILED DESCRIPTION

[0025] The present invention is preferably described below in conjunction with specific embodiments.

[0026] See also Figures 1 to 4 As shown, the present embodiment discloses a centering device for a UAV based on a steering gear, comprising a centering bottom plate 1 and a steering gear centering mechanism 2. The centering bottom plate 1 is a square plate. There are four steering gear centering mechanisms 2, which are respectively installed at the midpoints of the four sides of the centering bottom plate 1; each steering gear centering mechanism 2 comprises a steering gear 3, a steering disc 4, a crank 5, a connecting piece 6, a connecting rod 7, a central axis 8, a slider 9 and a sleeve 10. There is a steering disc 4 on the left and right sides of the steering gear 3, each steering disc 4 is connected to a crank 5, the crank 5 is an L-shaped crank, and each crank 5 is connected to a connecting rod 7. One end of the crank 5 is connected to the steering wheel 4, and the other end thereof is connected to one end of the connecting rod 7, and the two cranks 5 are connected by a connecting piece 6 to maintain synchronous movement. The central axis 8 is a linear optical axis, which is divided into three parts: left, middle and right. The other ends of the two connecting rods 7 are connected to the middle of the central axis 8, and the relative positions between the central axis 8 and the connecting rod 7 are fixed. A slider 9 is installed on the middle of the central axis 8, and the slider 9 is located between the two connecting rods 7. The left and right parts of the central axis 8 are both equipped with two sliders 9, and the ends of the left and right parts of the central axis 8 are locked by bushings 10.

[0027] Specifically, the slider 9 is a rectangular block, a circular through hole is passed through the center of the side surface, a bearing is embedded inside, and a pulley 11 is arranged at the bottom.

[0028] During use, when the UAV lands on the return bottom plate 1, the steering wheel 4 of the servo 3 rotates and drives the crank 5, and then the connecting rod 7 connected to the other end of the crank 5 moves with the crank 5. Since the middle shaft 8 is connected to the other end of the connecting rod 7, the middle shaft 8 also moves with the connecting rod 7. Since the slider 9 is installed on the middle shaft 8, the slider 9 also moves with the middle shaft 8, thereby converting the rotation of the steering wheel 4 of the servo 3 into the sliding of the slider 9, thereby moving the UAV to the specified position.

[0029] The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A UAV centering device based on a steering gear, characterized by: The invention comprises a centering bottom plate (1) and a steering gear centering mechanism (2), wherein the steering gear centering mechanism (2) has a plurality of members distributed at the edges of the centering bottom plate (1), and each steering gear centering mechanism (2) comprises a steering gear (3), a steering disc (4), a crank (5), a connecting piece (6), a connecting rod (7), a central shaft (8), a slider (9) and a shaft sleeve (10), and the steering gear (3) has a steering disc (4) on both the left and right sides, and each steering disc (4) is connected to a crank (5), and each crank (5) is connected to a A connecting rod (7) is connected to the crank (5), one end of which is connected to the steering wheel (4), and the other end of which is connected to one end of the connecting rod (7), and the two cranks (5) are connected by a connecting piece (6) to maintain synchronous movement, the central axis (8) is divided into three parts: left, middle and right, the other ends of the two connecting rods (7) are connected to the middle part of the central axis (8), the left and right parts of the central axis (8) are both equipped with sliders (9), and the ends of the left and right parts of the central axis (8) are locked by sleeves (10).

2. The UAV centering device based on a steering gear according to claim 1, characterized in that: A sliding block (9) is mounted on the middle portion of the central shaft (8), and the sliding block (9) is located between the two connecting rods (7).

3. The UAV centering device based on a steering gear according to claim 1, characterized in that: At least two sliding blocks (9) are mounted on the left and right parts of the central axis (8).

4. A UAV centering device based on a steering gear according to any one of claims 1 to 3, characterized in that: The sliding block (9) is a rectangular block, a circular through hole is passed through the center of the side surface, and a bearing is embedded inside.

5. The UAV centering device based on a steering gear according to claim 4, characterized in that: A pulley (11) is provided at the bottom of the slider (9).

6. The UAV centering device based on a steering gear according to claim 1, characterized in that: The centering bottom plate (1) is a square plate, and there are four steering gear centering mechanisms (2), which are respectively installed at the midpoints of the four sides of the centering bottom plate (1).

7. The UAV centering device based on a steering gear according to claim 1, characterized in that: The relative position between the central axis (8) and the connecting rod (7) is fixed.

8. The UAV centering device based on a steering gear according to claim 1, characterized in that: The crank (5) is an L-shaped crank.

9. The UAV centering device based on a steering gear according to claim 1, characterized in that: The central axis (8) is a linear optical axis.

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