Quick disassembly and assembly structure for V-shaped empennage of unmanned aerial vehicle
The V-shaped tail fin design, which combines a pin hinge and a nut, solves the cumbersome problems of traditional installation methods, enabling quick assembly and disassembly of the UAV's V-shaped tail fin and a secure connection, thus improving efficiency and ease of transport.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional V-shaped tail wing installation methods require additional tools and parts, are cumbersome to operate, take up a lot of space, and affect efficiency and transportation convenience.
The V-shaped tail fin is clamped and installed on the left and right sides. Through a combination of pin hinges, pin linkage rods and nuts, it can be quickly disassembled and assembled by hand, and the signal line can be automatically connected, simplifying the operation process.
It enables quick installation and disassembly without additional tools, reducing the risk of lost parts and damage during transportation, and improving efficiency and convenience.
Smart Images
Figure CN224045486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of unmanned aerial vehicle structure, especially, relate to a quick dismounting structure of unmanned aerial vehicle V tail. BACKGROUND
[0002] In the field of fixed-wing unmanned aerial vehicle, V tail as an important aerodynamic layout form, is widely used in various small and medium-sized unmanned aerial vehicles. However, the traditional V tail mounting mode has many inconveniences, which limits the use efficiency and transportation convenience of unmanned aerial vehicle.
[0003] The existing V tail mounting mode mainly divides into two categories. Fixed connection: tail wing and fuselage fixed connection, cannot be disassembled, leading to large space occupation when transporting. Detachable connection: need additional tools (such as screwdriver) and connecting parts (such as screw) to install, and the operation is complicated.
[0004] The existing technology has the following specific defects: additional tools and spare parts are needed in the installation process, and the operation is fine and complicated; spare parts are easy to lose, affecting normal use; large space is occupied when transporting, difficult to fix, easy to be damaged by external force; the installation and disassembly take a long time, affecting the use efficiency.
[0005] In view of the above problems, the market urgently needs a V tail structure that can balance the connection strength and quick dismounting requirements to simplify the installation and dismounting process and improve the use convenience. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims at providing a quick dismounting structure of unmanned aerial vehicle V tail, which realizes hand operation without additional tools through simplified installation and dismounting process, and shortens the installation time to several seconds.
[0007] To solve the above technical problems, the utility model is realized by the following technical schemes:
[0008] The utility model discloses a kind of quick dismounting structure of unmanned aerial vehicle V-tail, including clamping installation in fixed wing unmanned aerial vehicle tail connecting rod V-tail left side portion and V-tail right side portion, and nut is set on tail connecting rod;The V-tail left side portion with the V-tail right side portion lower part connecting end is articulated by at least two bolt hinge;The V-tail left side portion with the V-tail right side portion upper part connecting end is pinned by bolt linkage rod;Positioning bolt is installed in the tail connecting rod and is penetrated radially;The V-tail left side portion with the V-tail right side portion are respectively provided with first positioning groove and second positioning groove matched with the positioning bolt;First half threaded tube and second half threaded tube that the V-tail left side portion front end with the V-tail right side portion front end are respectively fixed with closed complete external thread pipe;When the nut is pre-tightened and is connected on the first half threaded tube and the second half threaded tube, the nut is on the bolt linkage rod.
[0009] As a preferred technical scheme of the utility model, the bolt linkage rod includes a bolt round rod; one end of the bolt round rod is fixed with a linkage positioning plate; the end of the linkage positioning plate away from the bolt round rod is provided with a sharp head portion matched with the first half threaded tube threaded groove and the second half threaded tube threaded groove.
[0010] As a preferred technical scheme of the utility model, the V-tail left side portion includes a first semicircular groove body and a left tail wing fixed on the outer wall of the first semicircular groove body; the first half threaded tube is coaxially fixed at the front end of the first semicircular groove body; the first positioning groove is formed in the first semicircular groove body; a first circular tube matched with the bolt round rod is fixed on the outer wall of the upper end of the first semicircular groove body.
[0011] As a preferred technical scheme of the utility model, the V-tail right side portion includes a second semicircular groove body and a right tail wing fixed on the outer wall of the second semicircular groove body; the second half threaded tube is coaxially fixed at the front end of the second semicircular groove body; the second positioning groove is formed in the second semicircular groove body; a second circular tube matched with the bolt round rod is fixed on the outer wall of the upper end of the second semicircular groove body.
[0012] As a preferred technical scheme of the utility model, the bolt hinge includes a front blade with a circular hole, a rear blade with an internally threaded hole and a half-thread bolt; the front blade is fixed on the outer wall of the lower end of the first semicircular groove body; the rear blade is fixed on the outer wall of the lower end of the second semicircular groove body; the half-thread bolt is screwed with the rear blade after penetrating through the front blade.
[0013] As a preferred technical scheme of the utility model, the tail fin connecting rod tail end is provided with a coaxially arranged signal line connector; the signal line connector comprises a mounting seat which is inserted and mounted at the tail fin connecting rod tail end; a signal connection base is fixed to the outside end of the mounting seat; two rows of axisymmetrically arranged first signal contact heads are arranged on the outer wall of the signal connection base.
[0014] As a preferred technical scheme of the utility model, the first semicircular groove tail end inner wall and the second semicircular groove tail end inner wall are jointly provided with an annular groove; two axis directionally arranged signal connection terminals are fixed to the first semicircular groove inner wall and the second semicircular groove inner wall in an axisymmetric manner; a row of second signal contact heads which are electrically connected with the first signal contact heads are arranged on the end face of the signal line connector.
[0015] As a preferred technical scheme of the utility model, when the bolt round rod is inserted on the first circular pipe and the second circular pipe, the distance between the first circular pipe and the second circular pipe is not greater than 1mm; the length of the second circular pipe is not greater than twice the length of the first semithreaded pipe.
[0016] As a preferred technical scheme of the utility model, in order to enable the bolt linkage rod to pop out and simultaneously release the upper locking of the V-shaped tail wing left side portion and the V-shaped tail wing right side portion when the nut is disassembled, a locking bolt and a reset spring are further arranged; a slot with a length greater than the length of the locking bolt is arranged on the second circular pipe; a cylindrical groove for placing the reset spring is arranged on the half portion of the second circular pipe adjacent to the first circular pipe; the locking bolt is arranged on the reset spring and the second circular pipe; the bolt round rod is arranged on the end cap of the locking bolt; a limiting ring is arranged on the portion of the bolt round rod located in the slot.
[0017] The utility model has the following beneficial effects:
[0018] 1、 the utility model shortens the installation time to several seconds by simplifying the installation and disassembly process, and the operation steps are simplified to two to three steps, and the use efficiency is improved.
[0019] 2、 the utility model ensures the stable connection between the V-shaped tail wing and the fuselage through multiple locking mechanisms (including the bottom double hinge structure, the front locking nut and the upper bolt linkage rod), and meets the flight requirements.
[0020] 3、 the utility model realizes automatic signal line connection during structure installation through the automatic connection mechanism, and improves the reliability and convenience of signal connection.
[0021] 4. The V-shaped tail wing can be completely disassembled, and when the unmanned aerial vehicle V-shaped tail wing is in the "storage and transportation state", the V-shaped tail wing left side part and the V-shaped tail wing right side part are placed flat and unfolded, the occupied space during transportation is reduced, transportation and storage are facilitated, and the damage risk during transportation is reduced.
[0022] 5. The utility model discloses a simple operation process, reduces spare and accessory loss risk, reduces maintenance cost and other measures, significantly improves user experience, and makes the unmanned aerial vehicle more easy to use and maintain.
[0023] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0025] Figure 1 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0026] Figure 2 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. Figure 1 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0027] Figure 3 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0028] Figure 4 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. Figure 3 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0029] Figure 5 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. Figure 3 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0030] Figure 6 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. Figure 5 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0031] Figure 7 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0032] Figure 8 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. Figure 7 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0033] Figure 9 It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one. It is the structure schematic diagram of the disassembled state of the quick dismounting structure of the unmanned aerial vehicle V-shaped tail wing of embodiment one.
[0034] Figure 10 For Figure 9 A-A is a sectional view.
[0035] Figure 11 For Figure 10 D is a local enlarged view.
[0036] In the drawings, the components represented by each reference numeral are listed as follows:
[0037] 1-tail connecting rod, 2-V tail left part, 3-V tail right part, 4-nut, 5-latch hinge, 6-positioning latch, 7-latch linkage rod, 8-signal line connector, 9-signal connection terminal, 10-locking latch, 11-reset spring, 12-limiting ring, 21-first positioning groove, 22-first half threaded tube, 23-first half circular groove body, 24-left tail wing, 25 first circular tube, 31-second positioning groove, 32-second half threaded tube, 33-second half circular groove body, 34-right tail wing, 35-second circular tube, 36-slot, 37-cylindrical groove, 51-front blade, 52-rear blade, 53-half silk latch, 71-latch round rod, 72-linkage positioning plate, 73-tipped portion, 81-mounting seat, 82-signal connection base, 83-first signal contact head, 91-second signal contact head. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one:
[0040] Please refer to Figures 1-6 The utility model discloses a kind of unmanned aerial vehicle V tail quick dismounting structure, including clamping installation in fixed wing unmanned aerial vehicle tail connecting rod 1 V tail left part 2 and V tail right part 3, and nut 4 of sleeve setting in tail connecting rod 1.
[0041] V tail left part 2 and V tail right part 3 lower part connecting end are hinged by at least two latch hinges 5. When unmanned aerial vehicle V tail is in "storage and transportation state", V tail left part 2 and V tail right part 3 are laid flat and unfolded, reduce the occupied space when transporting, facilitate transportation and storage, while reducing damage risk in transportation process.
[0042] The upper end of the V-tail left part 2 is connected with the upper end of the V-tail right part 3 through the pin joint of the latch linkage rod 7. The latch linkage rod 7 connects the V-tail left part 2 with the V-tail right part 3.
[0043] The positioning latch 6 is installed on the tail wing connecting rod 1 in the radial direction. The V-tail left part 2 and the V-tail right part 3 are respectively provided with a first positioning slot 21 and a second positioning slot 31 matched with the positioning latch 6. The positioning latch 6 matches with the first positioning slot 21 and the second positioning slot 31 to position the V-tail left part 2 and the V-tail right part 3 on the tail wing connecting rod 1.
[0044] The first half threaded pipe 22 and the second half threaded pipe 32 are respectively fixed on the front end of the V-tail left part 2 and the front end of the V-tail right part 3. When the nut 4 is pre-tightened and threaded on the first half threaded pipe 22 and the second half threaded pipe 32, the nut 4 is on the latch linkage rod 7. When the nut 4 is screwed on the first half threaded pipe 22 and the second half threaded pipe 32, the V-tail left part 2 and the V-tail right part 3 are clamped and fixed on the tail wing connecting rod 1, and the nut 4 is on the latch linkage rod 7 to ensure the stability of the butt joint of the V-tail left part 2 and the V-tail right part 3, and maintain the clamping and fixing effect of the V-tail.
[0045] The latch linkage rod 7 includes a latch round rod 71. The latch round rod 71 is fixed with a linkage positioning plate 72 at one end. The end of the linkage positioning plate 72 away from the latch round rod 71 is provided with a sharp head 73 matched with the threaded slots of the first half threaded pipe 22 and the second half threaded pipe 32, which enhances the stability of the connection.
[0046] The V-tail left part 2 specifically includes a first half circular groove body 23 and a left tail wing 24 fixed on the outer wall of the first half circular groove body 23. The first half threaded pipe 22 is coaxially fixed on the front end of the first half circular groove body 23. The first positioning slot 21 is formed on the first half circular groove body 23. The first half circular groove body 23 is fixed with a first circular pipe 21 matched with the latch round rod 71 at the upper end of the outer wall.
[0047] The V-tail right part 3 specifically includes a second half circular groove body 33 and a right tail wing 34 fixed on the outer wall of the second half circular groove body 33. The second half threaded pipe 32 is coaxially fixed on the front end of the second half circular groove body 33. The second positioning slot 31 is formed on the second half circular groove body 33. The second half circular groove body 33 is fixed with a second circular pipe 35 matched with the latch round rod 71 at the upper end of the outer wall.
[0048] The latch hinge 5 specifically includes a front blade 51 with a round hole, a rear blade 52 with an internally threaded hole, and a half-latch 53. The front blade 51 is fixed to the outer wall of the lower end of the first semicircular groove body 23. The rear blade 52 is fixed to the outer wall of the lower end of the second semicircular groove body 33. The half-latch 53 is screwed to the rear blade 52 after passing through the front blade 51, realizing the hinging function and ensuring the stability of the tail wing during flight.
[0049] The V-tail left part 2 and the V-tail right part 3 are both equipped with rudders for adjusting the flight attitude. Wire grooves are arranged on the arms of the first semicircular groove body 23 and the walls of the second semicircular groove body 33. A coaxial signal connector 8 is installed at the tail end of the tail connecting rod 1. The signal connector 8 and the wires between the main machine of the unmanned aerial vehicle pass through the tail connecting rod 1. The signal connector 8 includes a mounting seat 81 installed at the tail end of the tail connecting rod 1. A signal connection base 82 is fixed to the outer side of the mounting seat 81. The signal connection base 82 is equipped with two rows of first signal contact heads 83 arranged symmetrically on the outer wall. The tail end inner walls of the first semicircular groove body 23 and the second semicircular groove body 33 are jointly provided with an annular groove. Two signal connection terminals 9 are fixed to the inner walls of the annular grooves of the first semicircular groove body 23 and the second semicircular groove body 33 in an axial direction. The wires connecting the signal connection terminals 9 and the rudders pass through the wire grooves. The end face of the signal connector 8 is provided with a row of second signal contact heads 91 electrically connected to the first signal contact heads 83. The second signal contact heads 91 and the first signal contact heads 83 are both made of elastic copper sheets. The two rows of second signal contact heads 91 and the two rows of first signal contact heads 83 are in contact with each other, realizing the communication and electrical control connection between the rudders on the V-tail left part 2 and the V-tail right part 3 and the main machine of the unmanned aerial vehicle. Through the automatic connection mechanism between the signal connector 8 and the two signal connection terminals 9 when the V-tail left part 2 and the V-tail right part 3 are closed and installed on the tail connecting rod 1, the signal line connection is automatically completed during structure installation, without the need for manual plugging and unplugging of the signal line, improving the reliability and convenience of signal connection.
[0050] When the latch round rod 71 is inserted into the first circular tube 21 and the second circular tube 35, the distance between the first circular tube 21 and the second circular tube 35 is not greater than 1mm. The length of the second circular tube 35 is not greater than twice the length of the first semicircular threaded tube 22, facilitating the quick extraction of the latch round rod 71 to realize the separation of the V-tail left part 2 and the V-tail right part 3.
[0051] Unmanned aerial vehicle V-tail installation process:
[0052] Initially assemble the unmanned aerial vehicle V-tail, and hinge the lower parts of the V-tail left part 2 and the V-tail right part 3 together through the latch hinge 5.
[0053] The first step, positioning and clamping, involves fitting the V-shaped tail wing onto the tail wing connecting rod 1, aligning the positioning pin 6 with the first positioning groove 21 and the second positioning groove 31. The second step, upper connection, involves connecting the upper parts of the left side portion 2 and the right side portion 3 of the V-shaped tail wing together via the pin linkage rod 7, inserting the pin rod 71 into the first round tube 21 and the second round tube 35. The third step, fixing and locking, involves pre-tightening the nut 4 by connecting the threaded parts of the first semi-threaded tube 22 and the second semi-threaded tube 32, so that the nut 4 rests against the pin linkage rod 7, completing the installation. This allows for manual operation without additional tools. The installation process is simplified to three steps, making it quick and convenient.
[0054] The process of disassembling the V-tail fin of a drone:
[0055] Step 1: Unlock by loosening nut 4, disengaging it from the first semi-threaded tube 22 and the second semi-threaded tube 32. Step 2: Separate the upper part by pulling out the pin linkage rod 7, separating the upper parts of the left side portion 2 and the right side portion 3 of the V-shaped tail wing. Step 3: Unfold the lower part by separating the lower parts of the left side portion 2 and the right side portion 3 of the V-shaped tail wing, using the pin hinge 5 to unfold the hinged section. Step 4: Remove the tail wing by detaching the entire V-shaped tail wing from the tail wing connecting rod 1, completing the disassembly. Specific Implementation Example 2:
[0057] like Figures 7-11 As shown, based on Embodiment 1, the difference from Embodiment 1 is that, in order to allow the pin linkage rod 7 to pop out and simultaneously release the upper locking of the left side portion 2 and the right side portion 3 of the V-shaped tail fin when the nut 4 is disassembled, a locking pin 10 and a return spring 11 are also provided; a slot 36 with a length greater than the length of the locking pin 10 is opened on the second round tube 35; a cylindrical groove 37 for placing the return spring 11 is opened on the half of the second round tube 35 adjacent to the slot 36; the locking pin 10 passes through the return spring 11 and the second round tube 35; the pin rod 71 abuts on the end cap of the locking pin 10; a limit ring 12 is installed on the part of the pin rod 71 located in the slot 36 to prevent the pin linkage rod 7, the locking pin 10 and the return spring 11 from disengaging from the first round tube 25.
[0058] Installation process of the V-tail fin of the drone:
[0059] The initial assembly of the UAV's V-tail fin involves hinged the lower parts of the left side 2 and the right side 3 of the V-tail fin together using a pin hinge 5.
[0060] The first step is positioning and clamping, the V-tail is entirely sleeved on the tail connecting rod 1, the positioning pin 6 is positioned in the first positioning slot 21 and the second positioning slot 31. The second step is upper connection, the upper parts of the V-tail left part 2 and the V-tail right part 3 are pinned together through the pin linkage rod 7 and the locking pin 10, and the locking pin 10 is inserted on the first circular tube 21 and the second circular tube 35. The third step is fixed locking, the nut 4 is pre-tightened and threadedly connected on the first half threaded tube 22 and the second half threaded tube 32, and the nut 4 is abutted on the pin linkage rod 7, and the installation is completed. The installation is realized by hand operation, and no additional tool is needed. The installation steps are simplified into three steps, and the installation process is quick and convenient.
[0061] The unmanned aerial vehicle V-tail dismounting process is as follows:
[0062] The first step is to release locking and separate the upper part, the nut 4 is loosened and separated from the first half threaded tube 22 and the second half threaded tube 32. The pin linkage rod 7 and the locking pin 10 are bounced outwards under the action of the reset spring 11, the locking pin 10 is separated from the first circular tube 25, and the upper parts of the V-tail left part 2 and the V-tail right part 3 are separated. The second step is to expand the lower part, the lower parts of the V-tail left part 2 and the V-tail right part 3 are separated, and the hinge part is expanded through the pin hinge 5. The fourth step is to take off the tail, the V-tail is taken off from the tail connecting rod 1, and the dismounting is completed.
[0063] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0064] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that the persons skilled in the art can well understand and utilize the application. The application is limited by the claims and the entire scope and equivalents thereof.
Claims
1.Quick disassembly structure of V-tail of unmanned aerial vehicle, characterized in that: it comprises a V-tail left part (2) and a V-tail right part (3) clamped and installed on a tail connecting rod (1) of a fixed-wing unmanned aerial vehicle, and a nut (4) sleeved on the tail connecting rod (1); the V-tail left part (2) and the V-tail right part (3) are hinged through at least two pin hinges (5) at lower connecting ends; the V-tail left part (2) and the V-tail right part (3) are pinned through a pin linkage rod (7) at upper connecting ends; a positioning pin (6) is installed through a radial direction on the tail connecting rod (1); the V-tail left part (2) and the V-tail right part (3) are respectively provided with a first positioning groove (21) and a second positioning groove (31) matched with the positioning pin (6); first and second half threaded pipes (22, 32) closed into complete external threaded pipes are respectively fixed at front ends of the V-tail left part (2) and the V-tail right part (3); the nut (4) is pre-tightened and threadedly connected on the first and second half threaded pipes (22, 32), and the nut (4) is abutted on the pin linkage rod (7). The pin linkage rod (7) comprises a pin round rod (71); a linkage positioning plate (72) is fixed at one end of the pin round rod (71); a pointed head (73) is arranged at an end of the linkage positioning plate (72) away from the pin round rod (71) and matched with threaded grooves of the first and second half threaded pipes (22, 32). The V-tail left part (2) comprises a first half circular groove body (23) and a left tail wing (24) fixed on an outer wall of the first half circular groove body (23); the first half threaded pipe (22) is coaxially fixed at a front end of the first half circular groove body (23); the first positioning groove (21) is arranged on the first half circular groove body (23); a first circular pipe (25) is fixed on an outer wall of an upper end of the first half circular groove body (23) and insertedly matched with the pin round rod (71). The V-tail right part (3) comprises a second half circular groove body (33) and a right tail wing (34) fixed on an outer wall of the second half circular groove body (33); the second half threaded pipe (32) is coaxially fixed at a front end of the second half circular groove body (33); the second positioning groove (31) is arranged on the second half circular groove body (33); a second circular pipe (35) is fixed on an outer wall of an upper end of the second half circular groove body (33) and insertedly matched with the pin round rod (71). The pin hinge (5) comprises a front blade (51) with a circular hole, a rear blade (52) with an internally threaded hole, and a half wire pin (53); the front blade (51) is fixed on an outer wall of a lower end of the first half circular groove body (23); the rear blade (52) is fixed on an outer wall of a lower end of the second half circular groove body (33); the half wire pin (53) is threadedly connected with the rear blade (52) after passing through the front blade (51). 2.The quick detachable structure of the UAV V-tail according to claim 1, wherein, 3.The quick detachable structure of the UAV V-tail according to claim 2, characterized in that, 4.The quick detachable structure of the UAV V-tail according to claim 3, characterized in that, 5.The quick detachable structure of the UAV V-tail according to claim 4, characterized in that, 6.The quick detachable structure of the UAV V-tail according to claim 5, wherein, The tail wing connecting rod (1) tail end is provided with coaxially arranged signal line connector (8); the signal line connector (8) includes the mounting seat (81) inserted in the tail end of the tail wing connecting rod (1); the signal connection base (82) is fixed to the outside end of the mounting seat (81); the outer wall of the signal connection base (82) is provided with two rows of axisymmetrically arranged first signal contact heads (83). 7.The quick detachable structure of the UAV V-tail according to claim 6, characterized in that, The tail end inner wall of the first semicircular groove body (23) and the tail end inner wall of the second semicircular groove body (33) are provided with an annular groove; the inner walls of the annular grooves of the first semicircular groove body (23) and the second semicircular groove body (33) are fixed with two axially arranged signal connection terminals (9) in an axisymmetric manner; the end face of the signal connection terminal (9) adjacent to the signal line connector (8) is provided with a row of second signal contact heads (91) electrically connected with the first signal contact heads (83). 8.The quick detachable structure of the UAV V-tail according to claim 7, wherein, When the plug-in round rod (71) is inserted into the first circular tube (25) and the second circular tube (35), the distance between the first circular tube (25) and the second circular tube (35) is not greater than 1mm; the length of the second circular tube (35) is not greater than twice the length of the first semithreaded tube (22). 9.The quick detachable structure of the UAV V-tail according to claim 8, wherein, It also includes a locking plug (10) and a return spring (11); the second circular tube (35) is provided with a slot (36) with a length greater than that of the locking plug (10); the half of the second circular tube (35) adjacent to the first circular tube (25) is provided with a cylindrical groove (37) for placing the return spring (11); the locking plug (10) is arranged on the return spring (11) and the second circular tube (35); the plug-in round rod (71) is arranged on the end cap of the locking plug (10); the part of the plug-in round rod (71) located in the slot (36) is provided with a limiting ring (12).