Thrust propeller structure convenient to disassemble

Abstract

The utility model discloses a thrust propeller structure convenient to disassemble. The thrust propeller structure comprises a propeller body, a propeller seat, a connecting assembly, a connecting seat and a mounting seat, the mounting base is of a vertically-arranged hollow cylinder structure, and a hollow cylinder-shaped connecting base is coaxially arranged in the mounting base in a sleeved mode. The connecting seat is screwed and fixed with the mounting seat, and the upper end of the connecting seat vertically extends upwards out of the mounting seat; a cylindrical paddle seat is vertically and coaxially arranged right above the connecting seat, the cross section of the paddle seat is T-shaped, the lower end of the paddle seat is a small-diameter end matched with the interior of the connecting seat, and the lower end of the paddle seat is coaxially sleeved in the connecting seat and is fixedly connected with the connecting seat through a connecting assembly; the upper end of the propeller seat is a large-diameter end matched with the fixed end of the propeller body, the propeller body is horizontally and coaxially arranged on the upper surface of the propeller seat, and the fixed end of the propeller body is fixedly connected with the upper surface of the propeller seat. According to the utility model, the propeller body, the connecting seat and the mounting seat can be quickly mounted or dismounted, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to push force propeller technical field, concretely relates to a push force propeller structure convenient to dismount. BACKGROUND

[0002] With the increasingly serious energy crisis and environmental pollution, developing new energy aircraft is an inevitable trend, and electricity as a clean energy is the first choice. The propulsion power of electric motor gradually increases, and the propulsion efficiency is higher than that of fuel turbine fan engine, but the energy density of the battery is obviously inferior to aviation fuel. Therefore, a transition scheme is needed, and if a hybrid power of fuel engine and electric motor is used, the advantages of the two power sources can be combined to meet various performance indicators of the aircraft.

[0003] The propeller is an important component in the unmanned aerial vehicle power system, and is a component that generates pull or thrust in the unmanned aerial vehicle. In order to provide sufficient thrust, the diameter of the propeller is generally large, and the space occupied during storage, storage and transportation is also large.

[0004] The push force propeller refers to the direction of the force generated by the propeller, which is towards the power output device, for example, the propeller located below the power output device, which can drive the whole unmanned aerial vehicle to fly through the upward thrust generated by the rotation of the propeller.

[0005] In order to reduce the storage space of the unmanned aerial vehicle, the propeller can be removed and stored separately during storage, storage and transportation. However, the existing push force propeller has a complicated disassembly process, which is time-consuming and laborious, and is prone to looseness during use. Therefore, the above problems need to be solved. SUMMARY

[0006] The utility model solves the technical problem to provide a push force propeller structure convenient to dismount, which can quickly install or dismount the propeller body, the connecting seat and the mounting seat, save time and effort, and improve the work efficiency.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme: the utility model discloses a pusher propeller structure convenient to disassemble, and its innovation point lies in: including propeller body, paddle seat, connecting component, connecting seat and mounting seat, the mounting seat is vertically arranged hollow cylinder structure, and coaxially sleeved with the matching hollow cylindrical connecting seat is arranged in its inside, the connecting seat is fixed with the mounting seat, and the upper end vertically extends the upper surface of the mounting seat, the cylindrical paddle seat is vertically arranged coaxially in the upper of the connecting seat, and the cross section of the paddle seat is T-shaped, the lower end of the paddle seat is the small diameter end matched with the inside of the connecting seat, and is coaxially sleeved in the connecting seat and is fixedly connected with the connecting seat through the connecting component, the upper end of the paddle seat is the large diameter end matched with the fixed end of the propeller body, and the propeller body is horizontally arranged coaxially on the upper surface of the paddle seat and is fixedly connected with the upper surface of the paddle seat.

[0008] Preferably, the mounting plate is horizontally symmetrically arranged in cross shape on the outer circumferential surface of the mounting seat near the lower end, each mounting plate is arranged along the radial direction of the mounting seat, and the lower surface of each mounting plate is flush with the lower surface of the mounting seat, so that the mounting seat is fixedly installed through the mounting plate.

[0009] Preferably, the utility model further comprises a support plate and a second reinforcing plate, the support plate matched with the mounting seat is coaxially sleeved and arranged in the inside of the mounting seat at a position below the middle, the support plate is a horizontally arranged annular structure and is fixedly connected with the mounting seat, the upper surface of the support plate is in abutting contact with the upper surface of the connecting seat, so that the connecting seat is supported and limited, and a plurality of second reinforcing plates are vertically arranged along the circumferential direction between the lower surface of the support plate and the inner circumferential surface of the mounting seat, each second reinforcing plate is arranged along the radial direction of the support plate, is fixedly connected with the corresponding position of the lower surface of the support plate and the inner circumferential surface of the mounting seat, and does not extend out of the inner circumferential surface of the support plate, so that the support plate is fixedly reinforced through the second reinforcing plate.

[0010] Preferably, the utility model further comprises a bolt, a plurality of lock holes matched with the bolt are vertically embedded and arranged on the outer circumferential surface of the mounting seat at a position above the middle, each lock hole extends out of the inner circumferential surface of the mounting seat along the radial direction, an inner threaded hole matched with the bolt is vertically embedded and arranged on the outer circumferential surface of the connecting seat at a position corresponding to each lock hole, each inner threaded hole does not extend out of the inner circumferential surface of the connecting seat, and the connecting seat coaxially sleeved in the mounting seat is locked and fixed through the cooperation of the bolt, the lock hole and the corresponding inner threaded hole.

[0011] Preferably, the positioning block is further included; a plurality of positioning grooves are vertically embedded and evenly spaced along the circumferential direction of the lower surface of the connecting seat, and all the positioning grooves are arranged on the same circular track coaxial with the connecting seat, and each positioning groove is ensured not to extend beyond the inner and outer circumferential surfaces of the connecting seat; a positioning block matching the positioning groove is horizontally fixed on the upper surface of the support plate relative to each positioning groove, and through the cooperation of the positioning block and the positioning groove, when the connecting seat is supported on the support plate, each inner threaded hole is arranged coaxially with the corresponding lock hole, thereby positioning the screw connection between the connecting seat and the mounting seat.

[0012] Preferably, the fixing plate, spring and pressing plate are further included; a fixing plate matching the connecting seat is coaxially sleeved at the lower middle position in the connecting seat, and the fixing plate is a horizontally arranged circular ring structure, the outer circumferential surface of the fixing plate is fixedly connected with the inner circumferential surface of the connecting seat, and the inner diameter of the fixing plate is consistent with the inner diameter of the support plate; a pressing plate matching the connecting seat is coaxially sleeved at the upper middle position in the connecting seat, and the pressing plate is a horizontally arranged circular ring structure, the outer circumferential surface of the pressing plate is vertically slidably connected with the inner circumferential surface of the connecting seat, and the inner diameter of the pressing plate is consistent with the inner diameter of the fixing plate; a plurality of first springs are vertically arranged along the circumferential direction and evenly spaced between the pressing plate and the fixing plate, the upper end of each first spring is fixedly connected with the corresponding position on the lower surface of the pressing plate, and the lower end of each first spring is fixedly connected with the corresponding position on the upper surface of the fixing plate; the small diameter end of the paddle seat is larger than the inner diameter of the pressing plate and smaller than the inner diameter of the connecting seat, thereby supporting the small diameter end of the paddle seat on the pressing plate when the small diameter end of the paddle seat is coaxially sleeved in the connecting seat, and fixing the paddle seat through the connecting assembly and buffering and limiting the paddle seat through the first spring.

[0013] Preferably, the first reinforcing plate is further included; a plurality of first reinforcing plates are vertically arranged along the circumferential direction and evenly spaced between the lower surface of the fixing plate and the inner circumferential surface of the connecting seat, each first reinforcing plate is arranged along the radial direction of the fixing plate, and is fixedly connected with the corresponding position on the lower surface of the fixing plate and the inner circumferential surface of the connecting seat, respectively, and does not extend beyond the inner circumferential surface of the fixing plate, thereby supporting and strengthening the fixing plate through the first reinforcing plate.

[0014] Preferably, the connecting assembly comprises positioning plates, clamping blocks and limiting blocks; the outer circumferential surface of the small-diameter end of the paddle base is provided with cross-shaped horizontal symmetrical positioning plates on the end surface, each of the positioning plates is an arc structure coaxial with the small-diameter end of the paddle base, the lower surfaces of the four positioning plates are flush with the end surface of the small-diameter end of the paddle base, and the outer diameters of the positioning plates are matched with the inner diameter of the connecting seat; the upper surface of each positioning plate is horizontally provided with an arc-shaped clamping block in the middle position along the arc direction, each clamping block is coaxial with the corresponding positioning plate, and the two ends of the clamping block are flush with the corresponding positioning plate; the inner circumferential surface of the connecting seat is horizontally provided with limiting blocks matched with the positioning plates at the upper end, the four limiting blocks are arc structures coaxial with the connecting seat, the upper surfaces of the limiting blocks are flush with the upper surface of the connecting seat, and the inner diameters of the limiting blocks are matched with the diameter of the small-diameter end of the paddle base; the lower surface of each limiting block is vertically embedded with a clamping groove matched with the clamping block at the position of each clamping block, each clamping groove is an arc coaxial with the corresponding limiting block, and the two ends of the clamping groove vertically extend beyond the two ends of the corresponding limiting block, so that the small-diameter end of the paddle base is coaxially limited and fixed with the connecting seat through the cooperation of the limiting blocks, the clamping grooves, the positioning plates and the clamping blocks.

[0015] Preferably, the spacing between adjacent limiting blocks ensures that the positioning plates can be coaxially inserted into the connecting seat from top to bottom with the small-diameter end of the paddle base; the spring force of each first spring ensures that each clamping block is clamped in the clamping groove of the corresponding limiting block, thereby preventing the paddle base from falling out of the connecting seat without external force.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) The present utility model can quickly install or dismount the propeller body, the connecting seat and the mounting seat, which saves time and effort and improves work efficiency.

[0018] (2) The present utility model uses the limiting blocks, the clamping grooves, the positioning plates and the clamping blocks in cooperation to limit the installed paddle base, thereby ensuring the connection stability between the paddle base and the connecting seat.

[0019] (3) The present utility model uses the pressing plate, the first spring and the fixing plate in cooperation to not only buffer the paddle base, but also ensure the connection stability between the paddle base and the connecting seat through the spring force of the first spring. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, obviously, the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is a structure schematic view of the utility model's push propeller structure convenient to disassemble.

[0022] Figure 2 It is a structure schematic view of the utility model's mounting seat part.

[0023] Figure 3 It is a structure schematic view of the utility model's connecting seat part.

[0024] Figure 4 It is Figure 3 A-A view in the utility model.

[0025] Figure 5 It is a structure schematic view of the utility model's propeller seat part.

[0026] Figure 6 It is Figure 5 B-B view in the utility model.

[0027] Wherein, 1-propeller body;2-propeller seat;3-positioning plate;4-clamping block;5-connecting seat;6-limiting block;7-clamping groove;8-pressing plate;9-first spring;10-fixing plate;11-first reinforcing plate;12-positioning groove;13-supporting plate;14-positioning block;15-second reinforcing plate;16-internal thread hole;17-mounting seat;18-bolt;19-lock hole;20-mounting plate. Specific implementation

[0028] The technical scheme of the utility model will be clearly and completely described below through specific implementation.

[0029] The utility model discloses a push propeller structure convenient to disassemble, which comprises a propeller body 1, a propeller seat 2, a connecting assembly, a connecting seat 5 and a mounting seat 17. Figures 1-6 As shown in the specific structure, the mounting seat 17 is a vertically arranged hollow cylindrical structure, and a hollow cylindrical connecting seat 5 matched with the mounting seat 17 is coaxially sleeved in the mounting seat 17; the connecting seat 5 is fixedly connected with the mounting seat 17 by screwing, and the upper end of the connecting seat 5 extends vertically upward beyond the upper surface of the mounting seat 17; a mounting plate 20 is horizontally symmetrically arranged in a cross shape on the outer circumferential surface of the mounting seat 17 close to the lower end of the mounting seat 17, each mounting plate 20 is arranged along the radial direction of the mounting seat 17, and the lower surface of each mounting plate 20 is flush with the lower surface of the mounting seat 17, so that the mounting seat 17 is fixedly installed through the mounting plate 20.

[0030] As Figures 1-6 shown, in the inner middle position of the mounting seat 17, a support plate 13 matched with the mounting seat 17 is coaxially sleeved, and the support plate 13 is a horizontally arranged circular ring structure and is fixedly connected with the mounting seat 17, and then the upper surface of the support plate 13 abuts against the upper surface of the connecting seat 5 to support and limit the connecting seat 5; a plurality of second reinforcing plates 15 are vertically arranged along the circumferential direction of the inner circumferential surface of the mounting seat 17 between the lower surface of the support plate 13 and the inner circumferential surface of the mounting seat 17, and each second reinforcing plate 15 is arranged along the radial direction of the support plate 13 and is fixedly connected with the corresponding position of the lower surface of the support plate 13 and the inner circumferential surface of the mounting seat 17, and does not extend out of the inner circumferential surface of the support plate 13, and then the support plate 13 is fixed and reinforced by the second reinforcing plates 15.

[0031] As Figures 1-6 shown, a plurality of lock holes 19 matched with the bolts 18 are vertically embedded and arranged on the outer circumferential surface of the mounting seat 17 at the upper position and are uniformly and spaced apart along the circumferential direction, and each lock hole 19 extends out of the inner circumferential surface of the mounting seat 17 along the radial direction; and an inner threaded hole 16 matched with the bolt 18 is vertically embedded and arranged on the outer circumferential surface of the connecting seat 5 at the position corresponding to each lock hole 19, and each inner threaded hole 16 does not extend out of the inner circumferential surface of the connecting seat 5, and then the connecting seat 5 coaxially sleeved on the mounting seat 17 is locked and fixed by the cooperation of the bolt 18, the lock hole 19 and the corresponding inner threaded hole 16.

[0032] As Figures 1-6 shown, a plurality of positioning grooves 12 are vertically embedded and arranged on the lower surface of the connecting seat 5 along the circumferential direction and are uniformly and spaced apart, and all the positioning grooves 12 are arranged on the same circular track coaxial with the connecting seat 5, and it is ensured that each positioning groove 12 does not extend out of the inner circumferential surface and the outer circumferential surface of the connecting seat 5; and a positioning block 14 matched with the positioning groove 12 is horizontally fixedly arranged on the upper surface of the support plate 13 at the position corresponding to each positioning groove 12, and by the cooperation of the positioning block 14 and the positioning groove 12, it is ensured that each inner threaded hole 16 is coaxially arranged with the corresponding lock hole 19 when the connecting seat 5 is supported on the support plate 13, and then the screw connection and fixation of the connecting seat 5 and the mounting seat 17 are positioned.

[0033] The utility model still vertically coaxially arranges the cylindrical propeller base 2 above the connecting seat 5, and the cross section of the propeller base 2 is T-shaped, as Figures 1-6 shown, the lower end of the propeller base 2 is a small-diameter end matched with the inside of the connecting seat 5, and is coaxially sleeved in the connecting seat 5 and is fixedly connected with the connecting seat 5 through the connecting assembly; the upper end of the propeller base 2 is a large-diameter end matched with the fixed end of the propeller body 1, and the propeller body 1 is horizontally coaxially arranged on the upper surface of the propeller base 2 and is fixedly connected with the fixed end of the propeller body 1 and the upper surface of the propeller base 2.

[0034] As shown in Figures 1-6 The middle lower position of the inner part of the connecting seat 5 is coaxially sleeved with a fixed plate 10 matched with it, and the fixed plate 10 is horizontally arranged in a circular ring structure, the outer circumferential surface of the fixed plate 10 is fixedly connected with the inner circumferential surface of the connecting seat 5, and the inner diameter of the fixed plate 10 is consistent with the inner diameter of the supporting plate 13; the middle upper position of the inner part of the connecting seat 5 is coaxially sleeved with a pressing plate 8 matched with it, and the pressing plate 8 is horizontally arranged in a circular ring structure, the outer circumferential surface of the pressing plate 8 is vertically slidably connected with the inner circumferential surface of the connecting seat 5, and the inner diameter of the pressing plate 8 is consistent with the inner diameter of the fixed plate 10; a plurality of first springs 9 are vertically arranged along the circumferential direction between the pressing plate 8 and the fixed plate 10, the upper end of each first spring 9 is fixedly connected with the corresponding position of the lower surface of the pressing plate 8, and the lower end of each first spring 9 is fixedly connected with the corresponding position of the upper surface of the fixed plate 10; the small-diameter end of the paddle seat 2 is larger than the inner diameter of the pressing plate 8 and smaller than the inner diameter of the connecting seat 5, so that when the small-diameter end of the paddle seat 2 is coaxially sleeved in the connecting seat 5, the small-diameter end of the paddle seat 2 is supported on the pressing plate 8, fixed by the connecting assembly, and buffered and limited by the first spring 9.

[0035] As shown in Figures 1-6 A plurality of first reinforcing plates 11 are vertically arranged along the circumferential direction between the lower surface of the fixed plate 10 and the inner circumferential surface of the connecting seat 5, each first reinforcing plate 11 is arranged along the radial direction of the fixed plate 10, and is fixedly connected with the corresponding position of the lower surface of the fixed plate 10 and the inner circumferential surface of the connecting seat 5, respectively, and does not extend out of the inner circumferential surface of the fixed plate 10, so as to support and strengthen the fixed plate 10 by the first reinforcing plate 11.

[0036] The utility model discloses a connecting assembly, including locating plate 3, clamping block 4 and limit block 6, as shown in Figures 1-6As shown, the outer circumferential surface of the small-diameter end of the paddle seat 2 is also provided with a positioning plate 3 in cross-shaped horizontal symmetry relative to the end surface, and each positioning plate 3 is an arc-shaped structure coaxially arranged with the small-diameter end of the paddle seat 2, the lower surfaces of the four positioning plates 3 are flush with the end surface of the small-diameter end of the paddle seat 2, and the outer diameters thereof are matched with the inner diameter of the connecting seat 5; the upper surface of each positioning plate 3 is also horizontally provided with an arc-shaped clamping block 4 along the arc direction thereof, each clamping block 4 is coaxially arranged with the corresponding positioning plate 3, and the two ends thereof are flush with the corresponding positioning plate 3; the inner circumferential surface of the connecting seat 5 is also horizontally provided with a limiting block 6 matched with the corresponding positioning plate 3 relative to the position of each positioning plate 3, the four limiting blocks 6 are arc-shaped structures coaxially arranged with the connecting seat 5, the upper surfaces thereof are flush with the upper surface of the connecting seat 5, and the inner diameters thereof are matched with the diameter of the small-diameter end of the paddle seat 2; the lower surface of each limiting block 6 is also vertically embedded with a clamping groove 7 matched with the clamping block 4 relative to the position of each clamping block 4, each clamping groove 7 is an arc coaxially arranged with the corresponding limiting block 6, and the two ends thereof vertically extend out of the two ends of the corresponding limiting block 6, so that the small-diameter end of the paddle seat 2 is coaxially limited and fixed with the connecting seat 5 through the cooperation of the limiting block 6, the clamping groove 7, the positioning plate 3 and the clamping block 4.

[0037] The spacing between the adjacent limiting blocks 6 needs to ensure that the positioning plate 3 can be coaxially inserted into the connecting seat 5 from top to bottom along with the small-diameter end of the paddle seat 2, and the spring force of each first spring 9 needs to ensure that each clamping block 4 is clamped in the clamping groove 7 of the corresponding limiting block 6, thereby preventing the paddle seat 2 from falling out of the connecting seat 5 under the condition of no external force.

[0038] The working principle of the utility model is as follows: first, the lower half of the connecting seat 5 is coaxially sleeved in the mounting seat 17, the cooperation of the positioning block 14 and the positioning groove 12 ensures that each lock hole 19 is coaxially arranged with the corresponding internal thread hole 16, and then the connecting seat 5 and the mounting seat 17 are screw-fixed through the bolt 18; then, ensure that each positioning plate 3 is misaligned with the corresponding limiting block 6, insert the small-diameter end of the paddle seat 2 into the connecting seat 5 coaxially, abut against the pressing plate 8 and continue to press down, until the positioning plate 3 is located in the area below the corresponding limiting block 6, rotate the paddle seat 2 horizontally to make each positioning plate 3 aligned with the corresponding limiting block 6, then slowly release the paddle seat 2, at this time, under the spring force of the first spring 9, the paddle seat 2 slides upward along with the pressing plate 8 until the clamping block 4 is clamped in the corresponding clamping groove 7; then, fix the fixed end of the propeller body 1 to the upper surface of the paddle seat 2, and then install the mounting seat 17 on the rotating end of the motor assembly through the mounting plate 20.

[0039] The utility model has the advantages of:

[0040] (1) The utility model discloses a propeller body 1, connecting seat 5 and the quick installation or dismounting of mounting seat 17 can be carried out, and save time and labour, improve work efficiency;

[0041] (2) The utility model discloses the cooperation of limiting block 6, card slot 7, positioning plate 3 and card block 4, is convenient for the limiting of the propeller seat 2 after installation to ensure the connecting stability between propeller seat 2 and connecting seat 5;

[0042] (3) The utility model discloses the cooperation of pressing plate 8, first spring 9 and fixed plate 10, not only can buffer propeller seat 2, but also can through the spring force of first spring 9 and ensure the connecting stability between propeller seat 2 and connecting seat 5.

[0043] The above-described embodiments are merely preferred embodiments of the utility model for description, and do not limit the design concept and scope of the utility model, and various modifications and improvements of the technical scheme of the utility model made by ordinary engineering technicians in the art without departing from the design concept of the utility model shall fall within the protection scope of the utility model, and the technical content of the utility model claimed for protection has been all recorded in the technical requirements.

Claims

1. A detachable pusher propeller structure, characterized by: Including propeller body, paddle seat, connecting assembly, connecting seat and mounting seat; the mounting seat is a hollow cylindrical structure arranged vertically, and a hollow cylindrical connecting seat matched with it is coaxially sleeved in the inside thereof; the connecting seat is fixedly connected with the mounting seat by screwing, and the upper end thereof extends vertically upward beyond the upper surface of the mounting seat; a cylindrical paddle seat is also vertically and coaxially arranged above the connecting seat, and the cross section of the paddle seat is T-shaped, the lower end of the paddle seat is a small-diameter end matched with the inside of the connecting seat, and is coaxially sleeved in the connecting seat and fixedly connected with the connecting seat by the connecting assembly; the upper end of the paddle seat is a large-diameter end matched with the fixed end of the propeller body, and the propeller body is horizontally and coaxially arranged on the upper surface of the paddle seat and fixedly connected with the upper surface of the paddle seat by the fixed end.

2. A detachable pusher propeller structure according to claim 1, characterized in that: A mounting plate is also horizontally and symmetrically arranged on the outer circumferential surface of the mounting seat near the lower end thereof, and each mounting plate is arranged along the radial direction of the mounting seat and needs to be arranged with the lower surface flush with the lower surface of the mounting seat, so as to fix the mounting seat by the mounting plate.

3. A detachable pusher propeller structure according to claim 2, characterized in that: A support plate and a second reinforcing plate are also coaxially sleeved in the inside of the mounting seat at an intermediate position below, and the support plate is a horizontally arranged ring structure and is fixedly connected with the mounting seat, so as to support and limit the connecting seat by the abutting contact between the upper surface of the support plate and the upper surface of the connecting seat; a plurality of second reinforcing plates are also vertically arranged along the circumferential direction between the lower surface of the support plate and the inner circumferential surface of the mounting seat, and each second reinforcing plate is arranged along the radial direction of the support plate and is fixedly connected with the corresponding position of the lower surface of the support plate and the inner circumferential surface of the mounting seat, and does not extend beyond the inner circumferential surface of the support plate, so as to fix and reinforce the support plate by the second reinforcing plate.

4. A detachable pusher propeller structure according to claim 3, characterized in that: A bolt is also vertically embedded and arranged in a plurality of lock holes matched with the bolt and arranged at an upper position along the circumferential direction of the outer circumferential surface of the mounting seat, and each lock hole extends beyond the inner circumferential surface of the mounting seat along the radial direction thereof; an inner threaded hole matched with the bolt is also vertically embedded and arranged on the outer circumferential surface of the connecting seat relative to each lock hole, and each inner threaded hole does not extend beyond the inner circumferential surface of the connecting seat, so as to lock and fix the connecting seat coaxially sleeved in the mounting seat by the cooperation of the bolt, the lock hole and the corresponding inner threaded hole.

5. A detachable pusher propeller structure as claimed in claim 4, wherein: The positioning block is also arranged on the lower surface of the connecting seat and is uniformly and spacedly arranged along the circumferential direction of the connecting seat. The positioning slots are arranged on the same circular track coaxial with the connecting seat. Each positioning slot does not extend beyond the inner and outer circumferential surfaces of the connecting seat. The positioning block is horizontally fixed on the upper surface of the supporting plate corresponding to each positioning slot. The positioning block and the positioning slot are matched. When the connecting seat is supported on the supporting plate, each inner threaded hole is coaxial with the corresponding lock hole, thereby positioning the screw connection between the connecting seat and the mounting seat.

6. A detachable pusher propeller structure as claimed in claim 3, wherein: The fixing plate, the spring and the pressing plate are also arranged. The fixing plate is coaxially sleeved on the lower part of the connecting seat and is matched with the connecting seat. The fixing plate is horizontally arranged in a circular ring structure. The outer circumferential surface of the fixing plate is fixedly connected with the inner circumferential surface of the connecting seat. The inner diameter of the fixing plate is consistent with the inner diameter of the supporting plate. The pressing plate is coaxially sleeved on the upper part of the connecting seat and is matched with the connecting seat. The pressing plate is horizontally arranged in a circular ring structure. The outer circumferential surface of the pressing plate is vertically and slidably connected with the inner circumferential surface of the connecting seat. The inner diameter of the pressing plate is consistent with the inner diameter of the fixing plate. A plurality of first springs are vertically arranged along the circumferential direction between the pressing plate and the fixing plate. The upper end of each first spring is fixedly connected with the lower surface of the pressing plate. The lower end of each first spring is fixedly connected with the upper surface of the fixing plate. The small-diameter end of the paddle seat is larger than the inner diameter of the pressing plate and smaller than the inner diameter of the connecting seat. When the small-diameter end of the paddle seat is coaxially sleeved in the connecting seat, the small-diameter end of the paddle seat is supported on the pressing plate. The paddle seat is fixed by the connecting assembly and is buffered and positioned by the first spring.

7. A detachable pusher propeller structure as claimed in claim 6, characterized in that: The first reinforcing plate is also vertically arranged along the circumferential direction between the lower surface of the fixing plate and the inner circumferential surface of the connecting seat. Each first reinforcing plate is arranged along the radial direction of the fixing plate and is fixedly connected with the lower surface of the fixing plate and the inner circumferential surface of the connecting seat. Each first reinforcing plate does not extend beyond the inner circumferential surface of the fixing plate. The first reinforcing plate supports and strengthens the fixing plate.

8. A detachable pusher propeller structure as claimed in claim 6, wherein: The connecting assembly comprises positioning plates, clamping blocks and limiting blocks; cross-shaped horizontal symmetrical positioning plates are arranged on the outer circumferential surface of the small-diameter end of the paddle base, and each positioning plate is an arc structure coaxial with the small-diameter end of the paddle base; the lower surfaces of the four positioning plates are flush with the end surface of the small-diameter end of the paddle base, and the outer diameters of the positioning plates match the inner diameter of the connecting seat; an arc-shaped clamping block is horizontally arranged on the upper surface of each positioning plate along the arc direction; each clamping block is coaxial with the corresponding positioning plate, and the two ends of the clamping block are aligned with the corresponding positioning plate; a limiting block matching the positioning plate is horizontally arranged on the inner circumferential surface of the connecting seat relative to the position of each positioning plate; the four limiting blocks are arc structures coaxial with the connecting seat, and the upper surfaces of the limiting blocks are flush with the upper surface of the connecting seat, and the inner diameters of the limiting blocks match the diameter of the small-diameter end of the paddle base; a clamping groove matching the clamping block is vertically embedded on the lower surface of each limiting block relative to the position of each clamping block; each clamping groove is an arc coaxial with the corresponding limiting block, and the two ends of the clamping groove vertically extend beyond the two ends of the corresponding limiting block; the small-diameter end of the paddle base and the connecting seat are coaxially limited and fixed through the cooperation of the limiting blocks, clamping grooves, positioning plates and clamping blocks.

9. A detachable pusher propeller structure as claimed in claim 8, characterized in that: The spacing between adjacent limiting blocks ensures that the positioning plates can be coaxially inserted into the connecting seat from top to bottom with the small-diameter end of the paddle base; the spring force of each first spring ensures that each clamping block is clamped in the clamping groove of the corresponding limiting block, thereby preventing the paddle base from falling out of the connecting seat without external force.

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