Quick disassembly and assembly mechanism for arms of unmanned aerial vehicle

Abstract

The utility model provides an unmanned aerial vehicle arm quick dismounting and mounting mechanism which is used for solving the problems that in the prior art, a plant protection unmanned aerial vehicle arm is complex in structure and occupies storage and transportation space. The quick disassembly and assembly structure comprises an arm seat and an arm, the arm seat is fixed to a rack of the unmanned aerial vehicle, a blind hole larger than the arm is formed in one side of the arm seat, a limiting pin is fixed in the blind hole, an arm pin groove is formed in the connecting end of the arm, the limiting pin is slidably clamped with the arm pin groove, the arm pin groove is J-shaped, and the longer end of the arm pin groove is an open end. And the shorter end of the limiting pin is a fixed end. The space can be saved, the vehicle body and the vehicle arms can be stored and transported separately, and damage is not prone to being caused. And the operation convenience and efficiency of the unmanned aerial vehicle are greatly improved. And the structure is relatively simple in design and easy to manufacture and maintain, and the production cost and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a quick disassembly and assembly mechanism for an unmanned aerial vehicle arm. Background Art

[0002] Plant protection drones refer to drones that use drone technology to perform farmland plant protection operations, where the arms are used to hang spraying equipment or other agricultural tools. Currently, most of the arms of plant protection drones are fixed or folded for storage. This structure is relatively complex and heavy, and it takes up a certain amount of storage and transportation space. It is also easy to cause damage to the drone arms during transportation. In order to solve the above problems, it is urgent to design a quick disassembly and assembly mechanism for drone arms. Utility Model Content

[0003] The utility model provides a rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm, which solves the problem in the prior art that the arm of the plant protection unmanned aerial vehicle has a complex structure and occupies storage and transportation space.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm comprises an arm seat and an arm. The arm seat is fixed on a frame of the unmanned aerial vehicle. A blind hole larger than the arm is arranged on one side of the arm seat. A limit pin is fixed in the blind hole. An arm pin groove is arranged at a connecting end of the arm. The limit pin is slidably engaged with the arm pin groove. The arm pin groove is J-shaped. The longer end of the arm pin groove is an open end for the limit pin to enter, and the shorter end is a fixed end.

[0006] Furthermore, a baffle is slidably provided between the bottom end of the blind hole and the limit pin, and a spring is provided between the baffle and the bottom end of the blind hole. The spring and the baffle make the clamping connection between the limit pin and the arm pin slot more secure.

[0007] Furthermore, the arm is a hollow tube, a pipe inlet hole is provided on the side of the arm seat corresponding to the blind hole, and a through hole is provided on the baffle. The arm is provided as a hollow tube to reduce the weight of the arm. By providing the pipe inlet hole on the arm seat and the through hole on the baffle, the water and electricity pipelines of the drone can pass through the pipe inlet hole and the through hole, and the arm through the hollow tube can protect the water and electricity pipelines.

[0008] Furthermore, the diameters of the pipe inlet hole and the through hole are 0.3-2 cm.

[0009] Furthermore, the connecting end of the machine arm has two evenly distributed machine arm pin grooves in a circumferential array, and the limiting pins include two and are symmetrically arranged. By providing two machine arm pin grooves and limiting pins, the connection between the machine arm and the machine arm seat is more firmly established.

[0010] Furthermore, a through threaded hole is provided on the side wall of the arm seat, a bolt is threadedly connected, and a stop pin is formed at the end of the bolt. The stop pin connected by thread can be easily disassembled and repaired.

[0011] Furthermore, the arm pin slot is J-shaped, the longer end of the arm pin slot is an open end for the limit pin to enter, and the shorter end is a fixed end.

[0012] Furthermore, the machine arm is made of carbon fiber material, which can reduce the overall weight of the plant protection UAV.

[0013] Beneficial effects:

[0014] The utility model makes the connection between the machine arm and the machine arm seat stable by slidingly engaging the limit pin with the machine arm pin groove. In addition, the machine arm can be quickly disassembled and replaced without the help of tools, which greatly reduces the difficulty of maintenance and repair. The machine arm can be quickly and easily disassembled during storage and transportation, saving space, and the fuselage and the machine arm can be stored and transported separately, which is not easy to cause damage. The operation convenience and efficiency of the drone are greatly improved. In addition, the structural design is relatively simple, easy to manufacture and maintain, and reduces the production cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a quick disassembly and assembly mechanism for an unmanned aerial vehicle arm of the utility model;

[0017] Figure 2 It is a top view explosion diagram of the utility model;

[0018] Figure 3 for Figure 2 A cross-sectional view of

[0019] Figure 4 This is a schematic diagram of the internal structure of the machine arm base;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the machine arm.

[0021] Among them: 1. Arm seat, 2. Spring, 3. Baffle, 4. Arm, 5. Limit pin, 6. Arm pin slot, 7. Water and electricity pipelines, 8. Blind hole, 9. Through hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3 As shown, the embodiment of the utility model provides a rapid disassembly and assembly mechanism for the arm of a drone, including an arm seat 1 and an arm 4. The arm seat 1 is fixed on the frame of the drone. A blind hole 8 for the arm 4 to be inserted is provided on one side of the arm seat 1. A limit pin 5 is fixed in the blind hole 8. An arm pin slot 6 is provided at the connecting end of the arm 4. The limit pin 5 is slidably engaged with the arm pin slot 6, and the arm pin slot is provided with a bending section. The arm pin slot 6 is J-shaped, and the longer end of the arm pin slot 6 is an open end for the limit pin 5 to enter, and the shorter end is a fixed end. A baffle 3 is slidably provided between the bottom end of the blind hole 8 and the limit pin 5, and a spring 2 is provided between the baffle 3 and the bottom end of the blind hole 8.

[0024] During use, slowly insert the arm 4 into the circular hole of the arm to ensure that the pin slot opening on the arm 4 is aligned with the stop pin 5 in the arm seat. Continue to push the arm 4 so that the arm 4 compresses the spring 2 through the baffle 3. When the stop pin 5 hits the edge of the arm pin slot 6, stop pushing and rotate the arm 4 so that the stop pin 5 slides along the arm pin slot 6 to the fixed end. Slowly release the arm 4, the spring 2 rebounds and acts on the arm 4 through the baffle 3, pushing the arm 4 outward. When the stop pin 5 hits the end of the arm pin slot 6, a stable locking structure is achieved. At this time, each degree of freedom of the arm 4 is restricted, achieving a stable fastening state, thereby realizing the rapid installation of the arm. When disassembling the arm 4, compress the spring 2 so that the stop pin 5 slides along the fixed end of the arm pin slot 6 to the open end, and the stop pin 5 is disconnected from the arm pin slot 6. When the spring 2 is not used, the side wall of the fixed end is connected with the stop pin 5 to realize the rapid disassembly and installation of the arm 4.

[0025] The arm 4 is a hollow tube, and a pipe inlet hole is provided on one side of the arm seat 1 corresponding to the blind hole 8, and a through hole 9 is provided on the baffle plate 3. The diameter of the pipe inlet hole and the through hole 9 is 0.3-2cm. The arm 4 is set as a hollow tube to reduce the weight of the arm 4. By setting the pipe inlet hole on the arm seat 1 and the through hole 9 on the baffle plate 3, the water and electricity pipeline 7 of the drone can pass through the pipe hole and the through hole 9, and the arm 4 through the hollow tube can protect the water and electricity pipeline 7. When installing the arm 4, the water and electricity pipeline 7 is inserted into the arm 4, and the arm 4 is fixed by the clamping of the arm pin groove 6 and the limit pin 5. The water and electricity pipeline 7 is taken out from the arm 4 and connected to the corresponding equipment through the plug connector at the end of the water and electricity pipeline 7. When disassembling the arm 4, the plug connector at the end of the water and electricity pipeline 7 is removed, and then the arm 4 is disassembled. During the transportation of the drone, the water and electricity pipeline 7 is fixed to the frame of the drone by a cable tie.

[0026] The connecting end of the arm 4 has two evenly distributed arm pin grooves 6 in a circumferential array, and the stop pins 5 include two and are symmetrically arranged. By providing two arm pin grooves 6 and stop pins 5, the connection between the arm 4 and the arm base 1 is made more secure.

[0027] The side wall of the arm seat 1 is provided with a through threaded hole, which is threadedly connected with a bolt, and the end of the bolt forms a limit pin 5. When the arm 4 collides during operation and causes the arm pin slot 6 to deform, the limit pin 5 connected by the thread can be easily disassembled and repaired.

[0028] The arm 4 is made of carbon fiber. The arm 4 made of carbon fiber is light in weight but high in strength. The arm 4 made of carbon fiber can reduce the overall weight of the drone, improve its carrying capacity and flight efficiency. In addition, carbon fiber has good chemical corrosion resistance and is not easily corroded and oxidized by chemical substances, which prolongs the service life of the arm 4 and reduces maintenance costs.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm, comprising an arm base (1) and an arm (4), wherein the arm base (1) is fixed on a frame of the unmanned aerial vehicle. Features: A blind hole (8) larger than the machine arm (4) is provided on one side of the machine arm seat (1), a limit pin (5) is fixed in the blind hole (8), an machine arm pin groove (6) is provided at the connecting end of the machine arm (4), and the limit pin (5) is slidably engaged with the machine arm pin groove (6).

2. A quick disassembly and assembly mechanism for an unmanned aerial vehicle arm according to claim 1, Features: A stop plate (3) is slidably disposed between the bottom end of the blind hole (8) and the limit pin (5), and a spring (2) is disposed between the stop plate (3) and the bottom end of the blind hole (8).

3. The quick disassembly and assembly mechanism for the drone arm according to claim 1, Features: The machine arm (4) is a hollow tube, a tube inlet hole is provided on a side of the machine arm seat (1) corresponding to the blind hole (8), and a through hole (9) is provided on the baffle plate (3).

4. The quick disassembly and assembly mechanism for the drone arm according to claim 3, Features: The diameters of the pipe inlet hole and the through hole (9) are 0.3-2 cm.

5. The rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm according to claim 1, Features: The connecting end of the machine arm (4) has two evenly distributed machine arm pin grooves (6) in a circumferential array, and the limiting pins (5) include two and are symmetrically arranged.

6. A quick disassembly and assembly mechanism for an unmanned aerial vehicle arm according to claim 1 or 5, Features: A through threaded hole is provided on the side wall of the machine arm seat (1), and a bolt is connected via the thread, with the end of the bolt forming a limit pin (5).

7. The rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm according to claim 1, Features: The arm pin slot (6) is J-shaped, the longer end of the arm pin slot (6) is an open end for the limit pin (5) to enter, and the shorter end is a fixed end.

8. The rapid disassembly and assembly mechanism for an unmanned aerial vehicle arm according to claim 1, Features: The machine arm (4) is made of carbon fiber.

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