A landing gear quickly replaceable inspection unmanned aerial vehicle

Abstract

This utility model discloses a patrol drone with a quick-change landing gear, relating to the field of drone equipment technology. The utility model includes a drone fuselage and a landing gear, with the fuselage and landing gear connected by a connector. The connector includes an upper threaded rod for screwing into a threaded hole in the drone fuselage and a lower threaded rod for passing through a screw hole on the landing gear. The upper and lower threaded rod portions are expanded outwards, with the lower end face of the expanded portion abutting against the upper surface of the landing gear. A hand-tightened bolt is also threaded onto the lower threaded rod to abut against the lower surface of the landing gear. This utility model breaks through the single form of existing bolt fixing, designing a split connector consisting of an upper threaded rod, an expanded portion, and a lower threaded rod. Using M-series metric threads, it can adapt to the preset threaded holes of different models of patrol drones without modifying the fuselage structure, solving the problem of "non-standard parts compatibility and universality".

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) equipment technology, specifically to an inspection UAV with a quick-change landing gear. Background Technology

[0002] With the widespread application of drone technology in fields such as power line inspection, oil and gas pipeline monitoring, municipal security, ecological and environmental protection, and mountain rescue, inspection drones have become a core tool for "aerial perception." Their operational scenarios are characterized by complex terrain, variable environments, and diverse tasks. As a key structure connecting the drone to the ground, the landing gear not only needs to fulfill the basic function of "supporting the fuselage and buffering takeoff and landing impacts," but also needs to adapt to the special requirements of different inspection scenarios. Therefore, the ability to quickly replace the landing gear is extremely important.

[0003] Existing methods for connecting the landing gear to the fuselage of drones are mainly "welding, one-piece injection molding, or multiple sets of bolts". The first two methods are more common. However, for inspection drones that need to meet different scenarios, bolts are used for fixing the landing gear due to the frequent replacement of the landing gear. As we know, bolts are the connecting parts that fix the landing gear to the fuselage. They are generally manufactured in a standard form. Obviously, frequent and rapid replacement of the landing gear will inevitably involve non-standard parts. Therefore, how to adapt the connecting bolts to different drones is the key to achieving rapid replacement of the landing gear (without changing the drone fuselage). Therefore, those skilled in the art have proposed an inspection drone with a quick-change landing gear. Utility Model Content

[0004] The purpose of this invention is to design a non-standard connector for quickly connecting the fuselage and landing gear of an inspection drone. This invention provides an inspection drone with a quick-change landing gear.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A quick-change landing gear inspection drone includes a drone fuselage and landing gear. The drone fuselage and landing gear are connected via a connector. The connector includes an upper threaded rod for screwing into a threaded hole in the drone fuselage and a lower threaded rod for passing through a screw hole on the landing gear. The upper and lower threaded rod portions are outwardly enlarged, and the lower end face of the enlarged portion abuts against the upper surface of the landing gear. A hand-tightened bolt is also threaded onto the lower threaded rod to abut against the lower surface of the landing gear.

[0007] Furthermore, the upper and lower lead screws are made of standard metric M-series threads.

[0008] Furthermore, the expansion section is externally constructed with an external hexagonal cup head, the specifications of which follow the specifications of the upper and lower lead screws.

[0009] Furthermore, the screw holes of the landing gear are machined into hexagonal through holes, the expanded diameter portion is cylindrical and has an internal hexagonal socket, the lower lead screw is welded to the end wall of the internal hexagonal socket, and the upper lead screw is located at the end of the cylindrical expanded diameter portion.

[0010] Furthermore, the lower lead screw sleeve is provided with an external hexagonal steel cylinder, which is inserted into the internal hexagonal socket and its extended end is placed in the hexagonal through hole of the landing gear screw through hole.

[0011] Furthermore, the hand-tightening bolt has a spring groove on the side that abuts against the landing gear, and a spring is placed in the spring groove, which abuts against the lower surface of the landing gear.

[0012] Furthermore, the free end of the lower lead screw is provided with a transverse through hole, and an iron pin that can be bent by external force is inserted into the through hole.

[0013] Furthermore, when the bottom of the expanded diameter cylindrical portion abuts against the upper surface of the landing gear, the length of the outer hexagonal steel cylinder placed in the internal hexagonal socket does not exceed the lower surface of the landing gear.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model breaks through the single form of existing bolt fixing and designs a split connector consisting of an upper lead screw, an expanded diameter part and a lower lead screw. It adopts M-series metric threads and can be adapted to the preset threaded holes of different models of inspection drones without modifying the engine structure, thus solving the problem of "compatibility and universality of non-standard parts".

[0016] This utility model uses the combination of "internal hexagonal socket (expanded diameter part), external hexagonal steel cylinder, and hexagonal screw through hole (landing gear)" to form an "anti-rotation constraint" between the connecting parts and the landing gear, avoiding loosening of the threads caused by fuselage vibration. At the same time, the "multiple sets of connecting parts" further improve stability and solve the problem of easy detachment of existing bolt connections. Attached Figure Description

[0017] Figure 1 This is an assembly drawing of the connector of this utility model;

[0018] Figure 2 This is a half-sectional view of the connector of this utility model;

[0019] Figure 3 This is a utility model Figure 1 Another viewpoint;

[0020] Figure 4This utility model relates to a landing gear connection scenario. Figure 1 ;

[0021] Figure 5 This utility model relates to a landing gear connection scenario. Figure 2 ;

[0022] Figure 6 This is a utility model Figure 4 Schematic diagram of the middle section;

[0023] Reference numerals: 1. UAV fuselage; 2. Landing gear; 3. Connector; 31. Upper lead screw; 32. Lower lead screw; 33. Expanded diameter; 4. Screw through hole; 5. Hand-tightening bolt; 51. Spring groove; 52. Spring; 6. External hexagonal socket head; 7. Internal hexagonal socket; 8. External hexagonal steel cylinder; 9. Through hole; 10. Iron pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] This embodiment provides an inspection drone with a quick-change landing gear. The main purpose is to design a non-standard connector for quickly connecting the drone's fuselage and landing gear, and the following technical solution is provided, which will be discussed below. Figures 1-6 Please provide a detailed explanation:

[0026] Example 1

[0027] A rapid-change landing gear inspection drone includes a drone fuselage 1 and landing gear 2. The drone fuselage 1 refers to the portion of an existing inspection drone (excluding landing gear 2), which is prior art. Due to the large variety and significant differences in existing inspection drones, only one typical structure is shown in the accompanying drawings. The improved structure of this application is as follows:

[0028] The drone fuselage 1 and landing gear 2 are detachably connected by a connector 3. The connector 3 includes an upper threaded rod 31 for screwing into the threaded hole of the drone fuselage 1 (it should be noted that if the fuselage and landing gear 2 of the inspection drone need to be replaceable, there must be a pre-drilled threaded hole on the fuselage, which is a known technology), and a lower threaded rod 32 for passing through the screw through hole 4 of the landing gear 2 (the screw through hole 4 on the landing gear 2 is similar to the threaded hole on the fuselage and is the basic structure required for connection).

[0029] An outwardly expanding diameter 33 structure (hereinafter referred to as "expanding diameter section") is provided between the upper lead screw 31 and the lower lead screw 32. The lower end face of the expanding diameter section is used to abut against the upper surface of the landing gear 2. A hand-tightening bolt 5 is also threaded onto the outer side of the lower lead screw 32. The hand-tightening bolt 5 is used to abut against the lower surface of the landing gear 2, forming a "top abutting and bottom locking" fixed structure.

[0030] Meanwhile, to better adapt to the threaded holes of the existing inspection drone fuselage 1 and to ensure standard compatibility, the upper lead screw 31 and the lower lead screw 32 adopt the standard metric M-series thread. Furthermore, to facilitate the screw 31's screwing into the fuselage threaded hole, an external hexagonal socket head cap 6 is constructed on the outer side of the expanded diameter section. The specifications of the external hexagonal socket head cap 6 match those of the upper lead screw 31 and the lower lead screw 32. In use, the external hexagonal socket head cap 6 is driven by an adjustable wrench, causing the upper lead screw 31 to rotate synchronously and screw into the threaded hole of the drone fuselage 1, thus fixing the connector 3 to the fuselage. Subsequently, the lower lead screw 32 is passed through the screw hole 4 of the landing gear 2, and the hand-tightened bolt 5 is tightened, clamping the landing gear 2 between the expanded diameter section and the hand-tightened bolt 5, ultimately achieving the connection between the fuselage and the landing gear 2.

[0031] The design of the connector 3 does not require major modifications to the drone fuselage 1. It can connect landing gear 2 adapted to different scenarios (such as thickened landing gear 2 for mountain rescue and lightweight landing gear 2 for municipal security) to the fuselage, which greatly shortens the replacement time of landing gear 2.

[0032] Example 2

[0033] This embodiment optimizes the stability design based on embodiment 1, reducing the risk of landing gear 2 detaching from the fuselage during flight. The specific improvements are as follows (the original fuselage structure is not changed; only the landing gear 2 and connecting parts 3 are adapted):

[0034] The screw through hole 4 of the landing gear 2 is machined into a hexagonal through hole; at the same time, the expanded diameter part in Embodiment 1 is constructed as a cylinder, with an internal hexagonal socket 7. The lower lead screw 32 is welded to the central end wall of the internal hexagonal socket 7, and the upper lead screw 31 and the cylindrical expanded diameter part are integral structures (which can be formed by integrally turning the thread during machining). In addition, an external hexagonal steel cylinder 8 is sleeved on the outside of the lower lead screw 32. One end of the external hexagonal steel cylinder 8 is inserted into the internal hexagonal socket 7, and the other end extends into the hexagonal screw through hole 4 of the landing gear 2. Through the cooperation between the external hexagonal steel cylinder 8 and the hexagonal hole, the rotational force of the upper lead screw 31 can be transmitted to the landing gear 2. At least two sets of connecting parts 3 are fixed on the landing gear 2 of each UAV to avoid the problem of the upper lead screw 31 thread loosening and the landing gear 2 falling off due to the vibration of the fuselage.

[0035] To further prevent the hand-tightening bolt 5 from retracting due to vibration, a spring groove 51 is provided on the side of the hand-tightening bolt 5 facing the landing gear 2, and a spring 52 is placed in the spring groove 51. One end of the spring 52 abuts against the hand-tightening bolt 5, and the other end abuts against the lower surface of the landing gear 2. At the same time, a transverse through hole 9 is provided at the free end of the lower lead screw 32, and an iron pin 10 that can be bent by external force is inserted into the through hole 9. The iron pin 10 can directly prevent the hand-tightening bolt 5 from retracting, while the spring 52 can provide an upward preload when the hand-tightening bolt 5 retracts slightly, ensuring a tight fit between the landing gear 2 and the connecting part 3.

[0036] It should be noted that (see reference) Figure 2 When the bottom of the cylindrical expanded section abuts against the upper surface of the landing gear 2, the outer hexagonal steel cylinder 8 inserted into the inner hexagonal socket 7 has a length not exceeding the lower surface of the landing gear 2 to avoid the steel cylinder protruding and affecting the landing stability of the landing gear 2.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rapid-change landing gear inspection drone, comprising a drone fuselage (1) and landing gear (2), characterized in that, The UAV fuselage (1) and landing gear (2) are connected by a connector (3). The connector (3) includes an upper screw (31) for screwing into a threaded hole in the UAV fuselage (1) and a lower screw (32) for passing through a screw through hole (4) on the landing gear (2). The upper screw (31) and the lower screw (32) are expanded outward (33). The lower end face of the expanded diameter (33) is used to abut against the upper surface of the landing gear (2). The lower screw (32) is also threaded with a hand-tightened bolt (5) for abutting against the lower surface of the landing gear (2).

2. The inspection drone with quick-change landing gear according to claim 1, characterized in that, The upper lead screw (31) and lower lead screw (32) adopt the standard metric M series thread.

3. The inspection drone with quick-change landing gear according to claim 1, characterized in that, The expansion section (33) has an external hexagonal cup head (6), the specifications of which follow the specifications of the upper lead screw (31) and the lower lead screw (32).

4. The inspection drone with quick-change landing gear according to claim 1, characterized in that, The screw through hole (4) of the landing gear (2) is machined into a hexagonal through hole. The expanded diameter (33) part is cylindrical and has an internal hexagonal socket (7). The lower screw (32) is welded to the end wall of the internal hexagonal socket (7). The upper screw (31) is located at the end of the cylindrical expanded diameter (33).

5. The inspection drone with quick-change landing gear according to claim 4, characterized in that, The lower lead screw (32) is fitted with an outer hexagonal steel cylinder (8), which is inserted into the inner hexagonal socket (7) and its extended end is placed in the hexagonal through hole (4) of the landing gear (2).

6. The inspection drone with quick-change landing gear according to claim 1, characterized in that, The hand-tightening bolt (5) has a spring groove (51) on one side that abuts against the landing gear (2). A spring (52) is placed in the spring groove (51) and the spring (52) abuts against the lower surface of the landing gear (2).

7. The inspection drone with quick-change landing gear according to claim 1, characterized in that, The free end of the lower lead screw (32) is provided with a transverse through hole (9), and an iron pin (10) that can be bent by external force is inserted into the through hole (9).

8. The inspection drone with quick-change landing gear according to claim 1, characterized in that, When the bottom of the cylinder of the expanded diameter (33) part abuts against the upper surface of the landing gear (2), the length of the outer hexagonal steel cylinder (8) placed in the inner hexagonal socket (7) does not exceed the lower surface of the landing gear (2).

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