Rotor wing outer undercarriage structure and unmanned aerial vehicle

Abstract

The utility model discloses a rotor wing outer undercarriage structure and an unmanned aerial vehicle, a rotor wing is connected to a rack through a supporting arm, a protective frame is arranged on the periphery of the rotor wing, a foot stool assembly comprises landing rod pieces and further comprises locking pieces, and each landing rod piece is provided with one locking piece; the locking piece comprises a hoop and a locking sleeve, the hoop comprises a rib plate I, a hoop plate and an involution bolt I, the two ends of the rib plate I are connected to the upper end and the lower end of the front face of the hoop plate through the involution bolt I to form a sleeve opening, the sleeve opening of the hoop extends in the horizontal direction and is locked to the outer end of a protection frame or a supporting arm of the rotor wing, and the locking sleeve is arranged on the back face of the hoop plate. A sleeve opening of the locking sleeve extends in the vertical direction, and the locking sleeve is connected and locked to the upper end of the lifting rod piece through a bolt. The landing rod pieces are arranged on the rotor wing periphery protection frame on the more periphery through the locking pieces and locked to achieve load supporting, and therefore the area of the face defined by the landing rod pieces is relatively large, and the landing and supporting stability of the landing gear structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to an UAV equipped with a rotor outer landing gear. Background Art

[0002] With the development of drone technology, its application scope is becoming more and more extensive. For example, for photography, which is commonly used by ordinary people, a camera is installed on a rotary-wing drone, and the drone can be remotely controlled by a mobile phone to cruise and take pictures at the same time. For example, for building inspection and maintenance, it is necessary to install a probe arm on the rotary-wing drone, and even a suction cup structure is installed at the front end of the probe arm to fix it on the surface of the building by extension and adsorption and perform inspection operations. For example, for field environment monitoring, cameras and other monitoring equipment are placed on the drone, which then flies to a preset position and lands, and then continues to monitor the operation and returns after completing the task.

[0003] General drones on the market include a body, frame, tripod, support arm and rotor, etc., and are equipped with a control system and power supply. The drone can be remotely controlled to take off via a remote control or mobile phone, and then cruise to a preset position for hovering operations or ground operations, and land at the time of ground operations, when the operation is completed or the power supply needs to be replaced.

[0004] For example, the Chinese patent document "Compressed Air Landing UAV Landing Mechanism and UAV, Publication No. CN219313065U" describes a landing gear comprising a closed assembly and at least three tripod assemblies, with the at least three tripod assemblies evenly distributed around the circumference of the UAV body. Another example is the Chinese patent document "Press Rod Landing UAV Landing Mechanism and UAV, Publication No. CN219884123U," in which the tripod assembly comprises a downbar and a locking clamp. The downbar is arranged below the UAV body in a manner that allows it to slide up and down, and the locking clamp is arranged around the periphery of the downbar, and the locking clamp can lock or release the downbar.

[0005] As mentioned above, the UAV landing gear is generally provided with a separate crossbar or diagonal arm structure to connect to the UAV body. Therefore, the surface enclosed by each landing gear leg is greatly restricted, and the surface area enclosed by each landing gear leg is relatively small, which will cause its landing stability to be relatively poor. Utility Model Content

[0006] The purpose of the invention of the utility model is to provide a UAV in response to the above-mentioned problems, in which landing rods are arranged on the rotor protection frame, thereby relatively increasing the surface area enclosed by each landing rod, and improving the landing and support stability of the landing gear structure.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0008] The drone includes a drone body, which is equipped with a body, a frame, a tripod assembly, a support arm, a rotor and a protective frame. The rotor is connected to the frame through the support arm, and the protective frame is arranged on the outer periphery of the rotor. The tripod assembly includes a landing rod, and the tripod assembly also includes a locking piece. Each landing rod is equipped with a locking piece; the locking piece includes a clamp and a locking sleeve, and the clamp includes a rib plate I and a hoop plate, and a matching bolt I. The two ends of the rib plate I are respectively connected to the upper and lower ends of the front side of the hoop plate through the matching bolt I to form a sleeve. The sleeve of the clamp extends horizontally and is locked to the protective frame or the outer end of the support arm of the rotor. A locking sleeve is provided on the back of the hoop plate. The sleeve of the locking sleeve extends vertically, and the locking sleeve is locked to the upper end of the landing rod through a bolt connection.

[0009] The locking sleeve includes a locking bolt and at least two locking rings arranged vertically in sequence. Each locking ring is equipped with a locking bolt. The locking ring is axially hollow, serving as a sleeve opening. The sidewall of the locking ring is provided with a locking hole extending radially through the sleeve opening. The locking bolt is threadedly connected to the locking hole and, when tightened, can be pressed or inserted into the outer wall of the landing rod. The front sidewall of the locking ring is bolted to the back of the hoop plate. There are two locking rings, one at the top and one at the bottom of the hoop plate.

[0010] As described above, the landing rods are positioned on the outer rotor perimeter guards via locking members and locked to provide load support, thereby forming the landing gear structure. Consequently, the surface area enclosed by each landing rod is relatively large, enhancing the landing and support stability of the landing gear structure.

[0011] Based on the above solution, in an improved solution, fixing holes are provided on the front side wall of the locking ring at positions directly opposite the mating bolts 1. The front side wall of the locking ring is connected to the back side of the hoop plate via the mating bolts 1 and the fixing holes. Therefore, the use of extended mating bolts 1 simultaneously secures the rib plate and the locking ring when tightened, simplifying the connection structure and facilitating assembly and disassembly.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0013] 1. The UAV of the present invention arranges the landing rods on the outer peripheral rotor protection frame through locking members and locks them to achieve load support. Therefore, the area enclosed by each landing rod is relatively large, which can improve the landing and support stability of the landing gear structure.

[0014] 2. The use of a clamp and locking sleeve to achieve a detachable connection makes it easy to adjust the installation position according to the load conditions. In addition, the use of extended matching bolts I simultaneously fixes the rib plate and locking ring when tightened, simplifying the connection structure and facilitating disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view of the structure of the UAV example 1 of the present utility model.

[0016] Figure 2 yes Figure 1 Magnified view of part A.

[0017] Figure 3 yes Figure 1 side view.

[0018] Figure 4 yes Figure 3 Enlarged view of part B.

[0019] Figure 5 yes Figure 1 Top view of stiffener I.

[0020] Figure 6 yes Figure 1 Schematic diagram of the locking ring connecting the lifting and lowering rod structure.

[0021] Figure 7 yes Figure 6 Another perspective structural diagram.

[0022] Figure 8 yes Figure 1 Schematic diagram of the locking ring structure.

[0023] Figure 9 It is a schematic diagram of the top view of the structure of the UAV example 2 of the present utility model.

[0024] Figure 10 It is a schematic diagram of the top view of the structure of the UAV example 3 of the present utility model.

[0025] Figure 11 yes Figure 10 Enlarged view of part C.

[0026] Figure 12 It is a schematic diagram of the top view of the structure of the UAV example 4 of the present utility model.

[0027] In the accompanying drawings, 1 is the fuselage, 11 is the frame, 12 is the support arm, 13 is the rotor, 14 is the protective frame, and 15 is the landing gear. DETAILED DESCRIPTION

[0028] Example 1

[0029] See also Figure 1 and Figure 3 , it is defined that the drone body has horizontal x and longitudinal y, z is the vertical direction, xy is the horizontal direction, and z is the vertical plane.

[0030] See also Figures 1-8The drone of this embodiment 1 includes a drone body, which is configured with a body 1, a frame 11, a tripod assembly, a support arm 12, and a rotor 3. The rotor 13 is connected to the frame 11 via the support arm 12. Each rotor 13 is arranged with at most one tripod assembly. At least three tripod assemblies can form a landing gear, forming at least three support points. These support points are distributed as evenly as possible around the circumference of the drone body. As described below, this application uses a vertically arranged straight rod as an example of a landing rod. The straight rod can also be arranged on a vertical plane with its lower end tilted outward. The landing rod can also be an existing tripod structure such as a telescopic rod, which will not be explained in detail here.

[0031] The protective frame 14 is arranged on the outer periphery of the rotor 13, and the tripod assembly includes a landing rod (as shown in the figure, this application takes a straight rod as an example) 15. The tripod assembly also includes a locking piece, and each landing rod 15 is equipped with a locking piece; the locking piece includes a clamp 141 and a locking sleeve, and the clamp 141 includes a rib plate I and a hoop plate, and a matching bolt I. The two ends of the rib plate I are respectively connected to the upper and lower ends of the front of the hoop plate through the matching bolt I to form a sleeve. The sleeve of the clamp 141 is extended horizontally and locked to the circumferential tube of the protective frame 14 of the rotor. A locking sleeve is provided on the back of the hoop plate. The sleeve of the locking sleeve extends vertically, and the locking sleeve is locked to the upper end of the landing rod 15 through a bolt connection.

[0032] Among them, the drone body includes a body 1, a frame 11, a landing gear, a support arm 12 and a rotor 13, etc. The rotor motor and the transmission shaft used have a solid structure or a hollow structure. The body 1 is equipped with a lithium battery pack and a controller circuit board, etc., which are connected and controlled by standard cables to start and stop the rotor. The drone body and its control are existing technologies and will not be described in detail here; for example, the DJI drone on the market; for example, the Chinese patent document "A crack detection drone, announcement number CN216509120U" takes the four-rotor drone to perform crack detection on a building as an example to illustrate. The drone body is provided with a probe arm and a crack detection mechanism. The crack detection mechanism includes a mechanical working arm and a crack detector, etc., which can slide back and forth and extend outward along the probe arm, and then realize crack detection through the crack detector. It is equipped with a landing gear for landing; for example, the Chinese patent document "Pressure rod type landing drone landing mechanism and drone, announcement number CN219884123U" states that the tripod assembly includes a down-pressure rod and a locking clamp. The down-pressure rod is arranged below the drone body so as to be able to slide up and down, and the locking clamp is arranged on the periphery of the down-pressure rod, and the locking clamp can lock and fix the down-pressure rod or release the down-pressure rod. The present application is to improve the landing gear structure of the existing drone body. This embodiment is explained by taking the four groups of rotor protection frames of the quadcopter drone as an example in which four straight rods are arranged respectively.

[0033] The locking sleeve includes a locking bolt and at least two locking rings 151. The at least two locking rings 151 are arranged in sequence along the vertical direction. Each locking ring 151 is equipped with a locking bolt. The locking ring 151 is axially hollow as a sleeve. The side wall of the locking ring 151 is provided with a locking hole that radially penetrates the sleeve. The locking bolt is threadedly connected to the locking hole and can be pressed or inserted into the outer wall of the lifting rod when tightened. The positive side wall of the locking ring 151 is connected to the back of the hoop plate by bolts. In order to provide greater load support, the protective frame can adopt a pipe frame structure of the same material and model as the support arm, such as a carbon fiber tube. The clamp and locking ring are made of the same existing materials as the support arm or frame, such as carbon fiber plate, carbon fiber tube, etc., or made of conventional materials such as stainless steel and aluminum alloy, which will not be explained in detail here.

[0034] like Figure 4 As shown, taking the example of two locking rings arranged at the upper and lower ends of the hoop plate, locking holes are respectively provided on the front side wall and the back side wall of the locking ring 151, the locking bolt on the front side wall is inserted into the lifting rod 15, and the locking bolt on the back side wall is tightly pressed against the outer wall of the lifting rod 15. Figure 2 .

[0035] When in use, first put the locking ring on the lifting rod, then align the clamp with the corresponding position of the protective frame, insert the bolts, align the lifting rod and the clamp, tighten the bolts to complete the locking and fixing.

[0036] As mentioned above, the landing rod is arranged on the rotor peripheral protection frame at a more peripheral position through a locking member and locked and fixed. The vertical extension landing rod is fixed under the horizontal extension protection frame to achieve load support and form the landing gear structure of the UAV. Therefore, compared with the original arrangement on the internal body, the area enclosed by each landing rod is relatively large, which can improve the landing and support stability of the landing gear structure. Increasing the area enclosed by the UAV landing bracket improves the UAV's ability to resist the risk of rollover when landing in the field. In addition, a clamp and a locking sleeve are used to achieve a detachable connection, which makes it easy to adjust the installation position according to the load conditions.

[0037] Example 2

[0038] Based on the aforementioned embodiment 1, this embodiment 2 is improved to simplify the connection structure between the locking ring and the clamp, as follows.

[0039] See also Figures 1-8 In the drone of Example 2, fixing holes are provided on the front side wall of the locking ring, directly opposite the mating bolts 1. The front side wall of the locking ring is connected to the back of the hoop plate via the mating bolts 1 and the fixing holes. Therefore, the use of extended mating bolts 1 simultaneously secures the rib plate and the locking ring when tightened, simplifying the connection structure and facilitating assembly and disassembly.

[0040] Example 3

[0041] The difference between this embodiment 3 and the aforementioned embodiment 1 or embodiment 2 lies in the locking sleeve structure. For other matters not fully described, please refer to the aforementioned embodiment 1 and embodiment 2.

[0042] See also Figure 1 and Figure 8 In the drone of this embodiment 3, the locking ring is replaced by a rib plate structure of a clamp. Due to the differences in size, model and arrangement position, it is defined as rib plate II for the convenience of distinction and explanation.

[0043] The locking sleeve comprises at least two ribs II and mating bolts II. The two ribs II are arranged vertically in sequence. The two ends of the ribs II are connected to the left and right sides of the front of the hoop plate via mating bolts II, forming a loop. The loop of the locking sleeve can be locked to the upper end of the landing rod. Two locking rings are provided, one at the top and one at the bottom of the hoop plate. This ensures the landing rod is locked and secured, thereby supporting the drone.

[0044] Example 4

[0045] The difference between this embodiment 4 and the aforementioned embodiments 1-3 is that the installation position of the lifting and lowering rod is changed. For details not explained in detail, please refer to the aforementioned embodiments 1-3.

[0046] See also Figure 1 , the above-mentioned embodiments 1-3 form a rectangular structure, which is optimized to obtain the following Figure 9 Equal spacing and large area optimization solution to achieve better and more stable performance.

[0047] Example 5

[0048] The difference between this embodiment 5 and the aforementioned embodiments 1-4 lies in the change of the connection structure of the lifting and lowering rods. For details not fully explained, please refer to the aforementioned embodiments 1-4.

[0049] See also Figure 10-11 The lifting rod is arranged between the two protective frames, and clamps are arranged on the front side wall and the back side wall of the locking ring to connect to the two adjacent protective frames. The front and back side walls are locked to prevent it from rotating around the protective frame, thereby providing a more stable support.

[0050] Example 6

[0051] The difference between this embodiment 6 and the aforementioned embodiments 1-5 lies in the change of the connection structure of the lifting and lowering rods. For details not fully explained, please refer to the aforementioned embodiments 1-5.

[0052] In the aforementioned embodiments 1-5, the landing rod is connected to the protective frame. However, some existing drone protective frames adopt a detachable structure or are made of thin plastic material, and the connection strength thereof is insufficient to support the load.

[0053] See also Figure 12 In this embodiment 6, extension arms are added, and four extension arms are vertically assumed on the supporting arms, and the ends of the extension arms are connected to each other to form a rectangular or square extension frame structure, and then the landing rods are locked and fixed at the four corners of the extension frame, so that the landing rods are fixedly installed at the outer periphery of the rotor. Among them, the extension arms and the supporting arms are arranged in a cross shape, similar to the cross shape arrangement of the landing rods and the peripheral rods of the protective frame. Therefore, they can be used as a locking and fixing structure, that is, the locking member (including the clamp 141 and the locking sleeve) is applied to the extension arms and the supporting arms for locking and fixing; Figure 12 In the example shown, the hoop 141 is coupled to the extension arm, while the locking ring is sleeved on the support arm. In this way, the applicability of the landing gear structure can be improved.

[0054] Example 7

[0055] The drones of the aforementioned embodiments 1-6 include a rotor external landing gear structure solution, which is briefly described in this embodiment 7. For any incomplete description, please refer to the aforementioned embodiments 1-6.

[0056] See also Figures 1-12 The rotor outer landing gear structure of this embodiment 6 includes a landing rod and a locking member, and each landing rod is equipped with a locking member; the locking member includes a clamp and a locking sleeve, the clamp includes a rib plate 1 and a hoop plate, and a matching bolt 1, and the two ends of the rib plate 1 are respectively connected to the upper and lower ends of the front of the hoop plate through the matching bolt 1 to form a sleeve, the sleeve of the clamp extends horizontally and can be locked to the protective frame of the rotor, and a locking sleeve is provided on the back of the hoop plate, the sleeve of the locking sleeve extends vertically, and the locking sleeve is locked to the upper end of the landing rod by a bolt connection.

[0057] In a specific example, the locking sleeve includes a locking bolt and at least two locking rings, and the at least two locking rings are arranged in sequence along the vertical direction. Each locking ring is equipped with a locking bolt, and the locking ring is axially hollow as a sleeve. The side wall of the locking ring is provided with a locking hole that radially penetrates to the sleeve. The locking bolt is threadedly connected to the locking hole and can be pressed or inserted into the outer wall of the lifting rod when tightened. The front side wall of the locking ring is provided with a fixing hole at the position opposite to the matching bolt I, and the front side wall of the locking ring is connected to the back of the hoop plate through the matching bolt I and the fixing hole.

[0058] In another specific example, the locking sleeve includes at least two ribs II and matching bolts II. The at least two ribs II are arranged vertically in sequence. The two ends of the ribs II are respectively connected to the left and right sides of the front face of the hoop plate through matching bolts II to form a sleeve. The sleeve of the locking sleeve can be locked to the upper end of the lifting rod.

[0059] It should be noted that the examples of the above embodiments can be combined with one or more of them according to actual needs, and multiple examples use a set of combined technical features in the accompanying drawings, which will not be described in detail here. While the drone landing mechanism in the above embodiments is mainly used for drones, it is also applicable to other equipment in the same / equivalent scenarios.

[0060] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction.

[0061] The above description is a detailed description and illustration of the preferred embodiments of the present invention, but these descriptions are not intended to limit the scope of protection claimed by the present invention. All equivalent changes or modifications completed under the technical teachings suggested by the present invention should fall within the scope of patent protection covered by the present invention.

Claims

1. A rotor outer landing gear structure, comprising a landing rod, characterized in that: It also includes a locking piece, and each landing rod is equipped with a locking piece; the locking piece includes a clamp and a locking sleeve, the clamp includes a rib plate I and a hoop plate, and a matching bolt I, the two ends of the rib plate I are respectively connected to the upper and lower ends of the front side of the hoop plate through the matching bolt I to form a sleeve, the sleeve of the clamp is extended horizontally and can be locked to the protective frame of the rotor, the back of the hoop plate is provided with a locking sleeve, the sleeve of the locking sleeve extends vertically, and the locking sleeve is locked to the upper end of the landing rod through a bolt connection.

2. The rotor outer landing gear structure according to claim 1, characterized in that: The locking sleeve includes a locking bolt and at least two locking rings, and the at least two locking rings are arranged in sequence along the vertical direction. Each locking ring is equipped with a locking bolt. The locking ring is axially hollow as a sleeve. The side wall of the locking ring is provided with a locking hole that radially penetrates to the sleeve. The locking bolt is threadedly connected to the locking hole and can be pressed or inserted into the outer wall of the lifting rod when tightened. The front side wall of the locking ring is provided with a fixing hole at the position opposite to the matching bolt I. The front side wall of the locking ring is connected to the back side of the hoop plate through the matching bolt I and the fixing hole.

3. The rotor outer landing gear structure according to claim 1, characterized in that: The locking sleeve includes at least two ribs II and matching bolts II. The at least two ribs II are arranged vertically in sequence. The two ends of the ribs II are respectively connected to the left and right sides of the front face of the hoop plate through matching bolts II to form a sleeve. The sleeve of the locking sleeve can be locked to the upper end of the lifting rod.

4. A drone comprising a drone body, the drone body being configured with a body, a frame, a tripod assembly, a supporting arm, a rotor, and a protective frame, the rotor being connected to the frame via the supporting arm, the protective frame being disposed on the periphery of the rotor, the tripod assembly including a landing rod, and characterized in that: The tripod assembly also includes a locking piece, and each landing rod is equipped with a locking piece; the locking piece includes a clamp and a locking sleeve, and the clamp includes a rib plate I and a hoop plate, and a matching bolt I. The two ends of the rib plate I are respectively connected to the upper and lower ends of the front of the hoop plate through the matching bolt I to form a sleeve, and the sleeve of the clamp is extended horizontally and locked to the protective frame or the outer end of the support arm of the rotor. A locking sleeve is provided on the back of the hoop plate, and the sleeve of the locking sleeve extends vertically, and the locking sleeve is locked to the upper end of the landing rod through a bolt connection.

5. The drone according to claim 4, characterized in that: The locking sleeve includes a locking bolt and at least two locking rings. The at least two locking rings are arranged in sequence along the vertical direction. Each locking ring is equipped with a locking bolt. The locking ring is axially hollow as a sleeve. The side wall of the locking ring is provided with a locking hole that radially penetrates to the sleeve. The locking bolt is threadedly connected to the locking hole and can be pressed or inserted into the outer wall of the lifting rod when tightened. The positive side wall of the locking ring is connected to the back of the hoop plate by bolts.

6. The drone according to claim 5, characterized in that: The front side wall of the locking ring is provided with a fixing hole at the position opposite to the matching bolt 1, and the front side wall of the locking ring is connected to the back side of the hoop plate through the matching bolt 1 and the fixing hole.

7. The drone according to claim 5, characterized in that: The number of the locking rings is 2, and the 2 locking rings are arranged at the upper and lower ends of the hoop plate.

8. The drone according to claim 4, characterized in that: The locking sleeve includes at least two ribs II and matching bolts II. The at least two ribs II are arranged vertically in sequence. The two ends of the ribs II are respectively connected to the left and right sides of the front face of the hoop plate through matching bolts II to form a sleeve. The sleeve of the locking sleeve can be locked to the upper end of the lifting rod.

9. The drone according to claim 7, characterized in that: The number of the locking rings is 2, and the 2 locking rings are arranged at the upper and lower ends of the hoop plate.

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