A drone propeller mounting structure

Abstract

This utility model discloses a drone propeller mounting structure, including two propeller hubs symmetrically arranged at both ends of a drive shaft; an angle adjustment plate, one end of which is fixed to the propeller hub, and the other end of which is connected to a pull rod at its bottom. Pulling down the pull rod via an external structure causes the pull rod to drive the angle adjustment plate, which in turn drives the propeller hub to rotate, thus adjusting the propeller angle; a support assembly is provided at the bottom of the angle adjustment plate, consisting of a mounting component and a connecting component; the mounting component is fitted onto the top of the pull rod; through the design of this utility model, an additional support assembly is constructed at the connection between the pull rod and the angle adjustment plate. This support assembly can bear part of the load and disperse stress concentration. When the drone is in high-frequency operation, it works with the connector and bolt at the end of the pull rod to form a double-point pull, effectively preventing the connection from breaking due to excessive force.

Description

Technical Field

[0001] This utility model belongs to the field of drone accessory technology, specifically relating to a drone propeller mounting structure. Background Technology

[0002] The drone propeller mounting structure is a key component connecting the motor and the propeller. Its core function is to generate lift and control flight attitude by precisely fixing the propeller position and transmitting the motor's rotational power.

[0003] Currently, the installation structure of drone propellers mainly relies on the tight fit between the connector and bolt at a single point on the rod end during rotation to assemble, pull, and fix the propeller. When drones frequently perform missions and the propellers are in a high-speed rotation state for a long time, pulling from only a single point will cause excessive stress on the connector and bolt, which may lead to breakage or other damage. Once the connection fails, it is impossible to temporarily adjust or lock the blade angle in time, resulting in unbalanced propeller power output, which in turn leads to flight attitude loss, violent shaking of the aircraft, and other safety hazards, seriously threatening the flight safety of drones. Utility Model Content

[0004] The purpose of this invention is to provide a drone propeller mounting structure to solve the problem mentioned in the background art that existing drone propellers rely solely on pulling down at a single point for angle adjustment, which can easily lead to breakage during frequent use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drone propeller mounting structure, comprising...

[0006] Two propeller hubs are symmetrically arranged at both ends of the drive shaft;

[0007] An angle adjustment plate is fixed to the propeller hub at one end and connected to a pull rod at the bottom of the other end. By pulling down the pull rod through an external structure, the pull rod drives the angle adjustment plate, which in turn drives the propeller hub to rotate, thereby adjusting the angle of the propeller blades.

[0008] The bottom of the angle adjustment plate is provided with a support assembly, which consists of mounting parts and connecting parts;

[0009] The mounting component is fitted onto the top of the tie rod, and the two are fixed together by bolts;

[0010] One end of the connector is fixed to the mounting component, and the other end is movably mounted at the bottom of the angle adjustment plate.

[0011] Preferably, both ends of the pull rod are equipped with a sleeve shaft, and the outer side of the angle adjustment plate is provided with a side groove for placing the sleeve shaft. The sleeve shaft is fixed to the angle adjustment plate by bolts.

[0012] After adjusting the blade angle, the sleeve shaft is pulled by the pull rod. At this time, the sleeve shaft pulls down the angle adjustment plate as a whole through the bolts, thereby causing the blade hub angle to deflect.

[0013] Preferably, the mounting component includes a collar with at least one threaded hole on its surface. A bolt that is threaded to the tie rod is screwed into the threaded hole. The tie rod has a threaded hole that matches the bolt, thereby achieving a stable installation of the collar.

[0014] Preferably, the bottom of the angle adjustment plate is provided with a bottom groove, one end of which is connected to the side groove of the angle adjustment plate; the connecting member includes an inner shaft rod installed in the bottom groove, and a ring sleeve is sleeved on the outside of the inner shaft rod. A diagonal brace rod is fixed between the ring sleeve and the collar. When the pull rod is pulled down, it will drive the diagonal brace rod to pull down synchronously through the collar. The diagonal brace rod will then drive the ring sleeve to descend. The ring sleeve will pull the angle adjustment plate through the inner shaft rod, thereby cooperating with the pull-down point at the sleeve shaft to achieve dual-point pull-down and reduce the stress of single-point pull-down.

[0015] Preferably, the ring sleeve rotates around the axis of the inner shaft, and the ring sleeve, diagonal brace, and collar are integrally formed.

[0016] Preferably, a connecting plate is provided between the ends of the two propeller hubs. A bearing seat is installed in the connecting plate. The bearing seat is used to support and limit the drive shaft and output the force generated by the drive shaft in the horizontal direction to both ends, thereby driving the propeller hub to rotate. Since this structure and principle are existing technologies and are not related to this improvement, they will not be described in detail here.

[0017] Preferably, the end of the propeller hub has an opening, and a propeller blade is installed in the opening. The propeller hub and the propeller blade are fixed together by bolts.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By designing this utility model, an additional support component is constructed at the connection between the pull rod and the angle adjustment plate. The support component can bear part of the load and disperse stress concentration. When the UAV is in a high-frequency use state, it works with the connector and bolt at the end of the pull rod to form a double-point pull, avoiding the potential risk of breakage due to excessive stress when pulled by a single point for a long time. This further reduces the probability of connection failure caused by mechanical vibration, thereby comprehensively improving the reliability and safety of the UAV propeller installation structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the angle adjustment plate and the support assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the angle adjustment plate and support assembly of this utility model when viewed from below.

[0023] In the picture:

[0024] 100. Propeller hub; 101. Connecting plate;

[0025] 200. Angle adjustment plate; 201. Pull rod; 202. Sleeve shaft;

[0026] 300, collar; 301, diagonal brace; 302, screw hole; 303, inner shaft; 304, ring sleeve; 305, bottom groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 3 This utility model provides a technical solution: a drone propeller mounting structure, including...

[0029] Two propeller hubs, 100, are symmetrically arranged at both ends of the drive shaft;

[0030] Angle adjustment plate 200 is fixed at one end to the rotor hub 100, and the bottom of the other end is connected to a pull rod 201. By pulling down the pull rod 201 through the external structure, the pull rod 201 drives the angle adjustment plate 200, and finally the angle adjustment plate 200 drives the rotor hub 100 to rotate, thereby realizing the adjustment of the blade angle.

[0031] The bottom of the angle adjustment plate 200 is provided with a support assembly, which consists of a mounting part and a connecting part;

[0032] The mounting piece is fitted onto the top of the tie rod 201, and the two are fixed together by bolts;

[0033] One end of the connector is fixed to the mounting piece, and the other end is movably mounted at the bottom of the angle adjustment plate 200.

[0034] In this embodiment, preferably, both ends of the pull rod 201 are equipped with a sleeve shaft 202, and the outer side of the angle adjustment plate 200 is provided with a side groove for placing the sleeve shaft 202. The sleeve shaft 202 and the angle adjustment plate 200 are fixed together by bolts.

[0035] After the blade angle is adjusted, the sleeve shaft 202 is pulled by the pull rod 201. At this time, the sleeve shaft 202 pulls down the angle adjustment plate 200 as a whole through the bolt, thereby causing the blade hub 100 to deflect.

[0036] In this embodiment, preferably, the mounting component includes a collar 300, the surface of which has at least one screw hole 302. A bolt that is threaded to the pull rod 201 is screwed into the screw hole 302. The pull rod 201 has a screw hole that matches the bolt, thereby achieving a stable installation of the collar 300.

[0037] In this embodiment, preferably, the bottom of the angle adjustment plate 200 is provided with a bottom groove 305, one end of which is connected to the side groove of the angle adjustment plate 200; the connecting member includes an inner shaft rod 303 installed in the bottom groove 305, and a ring sleeve 304 is sleeved on the outside of the inner shaft rod 303. A diagonal brace rod 301 is fixed between the ring sleeve 304 and the collar 300. When the pull rod 201 is pulled down, it will drive the diagonal brace rod 301 to pull down simultaneously through the collar 300. The diagonal brace rod 301 then drives the ring sleeve 304 to descend. The ring sleeve 304 will pull the angle adjustment plate 200 through the inner shaft rod 303, thereby cooperating with the pull-down point at the sleeve shaft 202 to achieve a two-point pull-down and reduce the stress of a single-point pull-down.

[0038] In this embodiment, preferably, the ring 304 rotates around the axis of the inner shaft 303, and the ring 304, the diagonal brace 301, and the collar 300 are integrated into one piece.

[0039] In this embodiment, preferably, a connecting plate 101 is provided between the ends of the two propeller hubs 100. A bearing seat is installed in the connecting plate 101, wherein the bearing seat is used to support and limit the transmission shaft and output the force generated by the transmission shaft in the horizontal direction to both ends, thereby driving the propeller hubs 100 to rotate. Since this structure and principle are existing technologies and are not related to this improvement, they will not be described in detail here.

[0040] In this embodiment, preferably, the end of the rotor hub 100 has an opening, and a rotor blade is installed in the opening. The rotor hub 100 and the rotor blade are fixed together by bolts.

[0041] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drone propeller mounting structure, comprising: Two propeller hubs (100) are symmetrically arranged at both ends of the drive shaft; Angle adjustment plate (200) is fixed at one end to the propeller hub (100) and the bottom of the other end is connected to a pull rod (201). Its features are: The bottom of the angle adjustment plate (200) is provided with a support assembly, which consists of a mounting component and a connecting component; The mounting component is sleeved on the top of the tie rod (201), and the two are fixed together by bolts; One end of the connector is fixed to the mounting component, and the other end is movably mounted at the bottom of the angle adjustment plate (200).

2. The unmanned aerial vehicle propeller mounting structure of claim 1, wherein: Both ends of the pull rod (201) are equipped with sleeve shafts (202). The outer side of the angle adjustment plate (200) is provided with a side groove for placing the sleeve shafts (202). The sleeve shafts (202) and the angle adjustment plate (200) are fixed together by bolts.

3. The unmanned aerial vehicle propeller mounting structure of claim 2, wherein: The mounting component includes a collar (300), the surface of which has at least one threaded hole (302), and a bolt that is threaded to the pull rod (201) is screwed into the threaded hole (302). The pull rod (201) has a threaded hole that is compatible with the bolt.

4. The unmanned aerial vehicle propeller mounting structure of claim 3, wherein: The bottom of the angle adjustment plate (200) is provided with a bottom groove (305), one end of which is connected to the side groove of the angle adjustment plate (200); the connecting member includes an inner shaft (303) installed in the bottom groove (305), a ring sleeve (304) is sleeved on the outside of the inner shaft (303), and a diagonal brace (301) is fixed between the ring sleeve (304) and the collar (300).

5. The unmanned aerial vehicle propeller mounting structure of claim 4, wherein: The ring sleeve (304) rotates around the axis of the inner shaft (303), and the ring sleeve (304), the diagonal brace (301), and the collar (300) are integrated.

6. The unmanned aerial vehicle propeller mounting structure of claim 1, wherein: A connecting plate (101) is also provided between the ends of the two hubs (100), and a bearing seat is installed in the connecting plate (101).

7. The unmanned aerial vehicle propeller mounting structure of claim 6, wherein: The end of the rotor hub (100) has an opening, and a rotor blade is installed in the opening. The rotor hub (100) and the rotor blade are fixed together by bolts.

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