Safety enhanced high-speed operation dynamic balance electric ducted flight propeller

Abstract

The invention relates to the field of ducted flight propellers, and discloses a safety enhanced high-speed operation dynamic balance electric ducted flight propeller, which comprises a motor, a rotor, a rotor and a rotor, the supporting ring is mounted in the mounting ring through a fixing assembly, a support is arranged in the middle of the supporting ring, and the blades are connected with the support through connecting assemblies; the installation ring and the support are connected through a plurality of supporting rods and auxiliary rods, the supporting rods and the auxiliary rods are distributed in a staggered mode and connected through barrier strips, the supporting rods, the auxiliary rods and the barrier strips are distributed in a #-shaped mode and used for blocking blades, and airflow enters the installation ring from the space among the supporting rods, the auxiliary rods and the barrier strips. The supporting rods and the auxiliary rods which are distributed in a staggered mode are arranged between the supporting ring and the support, and the blocking strips are arranged between the supporting rods and the auxiliary rods, so that the air inlet side of the mounting ring can be blocked, large sundries are prevented from entering the mounting ring, and meanwhile, when blades are exploded and fly out, the situation that fragments of the blades fly out and hurt surrounding personnel and objects can be prevented.

Description

Technical Field

[0001] The present invention relates to the field of ducted flight propulsion, and in particular to a safety-enhanced high-speed dynamically balanced electric ducted flight propulsion. Background Art

[0002] Electric ducted flight (EDF) is a propulsion system driven by an electric motor. Its core structure is a duct (or duct) and the fan blades located therein. Compared with traditional open propellers, the blades of the ducted propeller are surrounded by a circular or elliptical shell (the duct). This design can improve the efficiency of the airflow and reduce air resistance.

[0003] Existing electric ducted flight propulsors are composed of an electric motor, fan blades, ducts / ducts, guide rings and fairings. Their working principles are similar to those of turbojet engines, but their structures are simpler and their weights are lighter. Therefore, they are widely used in fields such as electric flying cars and model aircraft technology.

[0004] However, the current electric ducted flight thrusters only lock the blades directly from the motor shaft. Therefore, when running at high speeds, there are often problems such as centrifugal imbalance, shaking and eccentricity, damaged blades and easy propeller explosion, which seriously affect the safety and stability of flight. In addition, when a propeller explosion occurs, the blades are likely to fly out, posing a safety hazard to surrounding personnel and the environment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a safety-enhanced high-speed dynamically balanced electric ducted flight propulsor, which solves the problem in the prior art that when a propeller explosion occurs, the blades of the electric ducted flight propulsor are easily blown out, posing a safety hazard to surrounding personnel and the environment.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a safety-enhanced high-speed dynamic balance electric ducted flight propulsor, comprising:

[0007] A motor, which is used to drive the blades to rotate, and the motor is installed in the mounting ring through a mounting mechanism;

[0008] A support ring, which is installed in the mounting ring through a fixing assembly, a support is provided in the middle of the support ring, and the blades are connected to the support through a connecting assembly;

[0009] The mounting ring and the support are connected by a plurality of support rods and auxiliary rods, and the support rods and the auxiliary rods are staggered and connected by baffles. The support rods, auxiliary rods and baffles are arranged in a tic-tac-toe shape to block the blades, and the airflow enters the mounting ring through the three.

[0010] Preferably, a compression tail pipe is connected to a side of the mounting ring close to the motor, and a guide ring is connected to a side of the mounting ring close to the blades.

[0011] Preferably, the mounting mechanism includes a mounting plate, one side of the mounting plate is fixedly connected to the inner wall of the compression tail pipe, the other side of the mounting plate is fixedly connected to a mounting cylinder, the motor is located inside the mounting cylinder, and the motor and the mounting cylinder are connected by mounting screws.

[0012] Preferably, a plurality of the mounting plates are provided, the mounting cylinder is provided in a circular ring shape, and the plurality of mounting plates are evenly distributed in a star-shaped array with the mounting cylinder as the center.

[0013] Preferably, a fairing is threadedly connected to a side of the support ring away from the blades, an anti-slip strip is fixedly connected to an outer wall of the fairing, and the anti-slip strip is configured in a thin sheet shape.

[0014] Preferably, the fixing assembly includes a swivel block, one side of the swivel block is fixedly connected to a swivel plate, the swivel plate is rotatably connected to the inside of a support away from a blade side, a middle outer portion of one side of the swivel plate is rotatably connected to a push rod, one end of the push rod is rotatably connected to a telescopic rod, the telescopic rod passes through the support, the support rod and the mounting ring in sequence, one end of the telescopic rod is threadedly connected to a nut, and the nut is located outside the mounting ring.

[0015] Preferably, the connecting assembly includes a transmission shaft, one end of which is fixedly connected to the output end of the motor, and the other end is provided with a top plate, the blade is threadedly connected to the middle part of the outer wall of the transmission shaft, a ball bearing is installed on the side of the outer wall of the transmission shaft close to the top plate, a thrust bearing is provided on one side of the top plate, and the ball bearing, top plate and thrust bearing are all located inside the support close to the blade side.

[0016] Preferably, cavity one and cavity two are respectively opened on both sides of the support, the rotating block, rotating plate, top rod and telescopic rod are all located in cavity one, the top plate, ball bearing and thrust bearing are all located in cavity two, and the thrust bearing is fixedly connected to the side wall of cavity two, and a slot is opened on the side of the rotating block close to the fairing, and the slot is arranged in a regular hexagon.

[0017] Preferably, the inner wall of the mounting ring is fixedly connected to a limiting strip on one side close to the guide ring, and the side of the support ring close to the blade is in contact with the limiting strip. A limiting groove is provided on the side of the limiting strip close to the support ring, and an insert is fixedly connected to the side of the support ring close to the limiting strip, and the insert is in the limiting groove.

[0018] Preferably, a baffle is fixedly connected to the side of the outer wall of the transmission shaft close to the motor, and the baffle contacts one side of the blade. A limiting ring is provided on the side of the outer wall of the transmission shaft away from the motor, and a bolt is installed on one side of the limiting ring, and the bolt passes through the transmission shaft.

[0019] Working principle: When in use, the driving motor can drive the transmission shaft to rotate, and the transmission shaft can drive the blades to rotate. Under the rotation of the blades, the airflow can enter the installation ring from the guide ring, and finally spray out from the compression tail pipe. In the process of blade rotation, the support rod and the auxiliary rod can filter the gas entering the installation ring, and can block the larger debris in the gas to prevent it from entering the installation ring. In addition, when the blade explodes, the support rod and the auxiliary rod are distributed in a tic-tac-toe shape, so the blade can be prevented from being thrown out of the guide ring and hurting people around. At the same time, the mounting plate in the mounting mechanism can block the thrown blades to prevent them from being thrown out directly from the compression tail pipe. When the support rod and the auxiliary rod need to be disassembled, first rotate the fairing to separate it from the support, then rotate the nut to remove it from the end of the telescopic rod, and finally rotate the rotating plate to drive the rotating plate to rotate. When the rotating plate rotates, it will pull the top rod, and the telescopic rod can be pulled by the top rod. At this time, the telescopic rod can be moved and close to the middle of the rotating plate. When the end of the telescopic rod enters the support ring, the support plate or the auxiliary rod can be grabbed. The auxiliary rod is used to pull the support and the support ring out of the mounting ring, so that the support rod, the auxiliary rod and the support ring can be replaced. During installation, the support ring is inserted into the interior of the mounting ring, and then the support ring is driven to rotate by rotating the pillar. After the support ring rotates, the insert block is inserted into the limit groove. At this time, the support ring and the limit strip will contact each other, so as to guide the position of the support ring. Then the rotating block is reversed to pull the push rod in the opposite direction, and the end of the telescopic rod is pushed out by the push rod to expose it from the outside of the mounting ring. Then the nut is installed, and finally the fairing is installed on the support. After the support is installed, the top plate will enter the second cavity and contact with the thrust bearing. Therefore, when the motor drives the transmission shaft and the blades to rotate, one end of the transmission shaft is connected to the motor and supports the transmission shaft through the mounting mechanism and the motor, and the other end is supported by the top plate and the pillar. Therefore, both sides of the transmission shaft can be limited at the same time, thereby improving the stability of the blades driven by the rotating shaft when rotating at high speed, avoiding deviation of the center of the blades and the transmission shaft, which causes the blades to swing when rotating at high speed.

[0020] The present invention provides a safety-enhanced high-speed dynamic-balance electric ducted flight propeller, which has the following beneficial effects:

[0021] 1. The present invention provides a support ring and a support seat on the side of the mounting ring close to the blade, and staggered support rods and auxiliary rods are provided between the two. Meanwhile, a retaining bar is provided between the support rod and the auxiliary rod, and the three are distributed in a tic-tac-toe shape. Therefore, the air inlet side of the mounting ring can be enclosed to prevent larger debris from entering the mounting ring. At the same time, when the blade explodes and flies out, it can also prevent blade fragments from flying out and causing harm to surrounding personnel and objects.

[0022] 2. The present invention installs the blades on the transmission shaft, connects one side of the transmission shaft to the motor, and connects the other side to the support through the top plate, so that both sides of the transmission shaft can be positioned and supported at the same time, thereby ensuring the dynamic balance and high-precision operation of the transmission shaft and the blades during work.

[0023] 3. The present invention installs cavity 2 on the support, installs the ball bearing and the top plate in cavity 2, and also arranges a thrust bearing on the side wall of cavity 2. Therefore, while maintaining the stability and low friction of the transmission shaft 3, the thrust generated by the rotation of the blades can be dispersed and absorbed to prevent the transmission shaft from being displaced or deformed due to excessive axial load, thereby improving the stability of the device during operation.

[0024] 4. The present invention removes the nut and then rotates the rotating block to pull the push rod to drive the telescopic rod to retract and make it close to the middle of the rotating plate. At this time, the support plate can be grasped to take out the support ring and replace it. During installation, the support ring is inserted into the interior of the installation ring, and the rotating block is reversed to make the push rod push out the telescopic rod, and finally the nut is installed. Therefore, the loading and unloading of the support rod, the auxiliary rod and the baffle becomes convenient, which is beneficial to the later maintenance.

[0025] 5. The present invention sets a limit strip inside the mounting ring. Therefore, when installing the support ring, the support ring is placed behind the mounting ring. At this time, the plug block will first contact the limit strip, and then the support ring is rotated to drive the plug block to rotate. Finally, the plug block enters the limit groove. Through the cooperation of the plug block and the limit groove, the position of the support ring can be easily guided, so that the telescopic rod can pass through the mounting ring smoothly, thereby greatly improving the convenience of loading and unloading the support ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the installation ring of the present invention;

[0028] Figure 3 for Figure 2 A in the enlarged view;

[0029] Figure 4 It is a schematic diagram of the structure of the blade part of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the blade portion of the present invention;

[0031] Figure 6 This is a partial structural exploded view of the fairing of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the telescopic rod part of the present invention;

[0033] Figure 8 for Figure 7 The enlarged view of point B in the figure;

[0034] Fig. 9 It is a front cross-sectional view of the support of the present invention;

[0035] Fig.10 It is a schematic diagram of the structure of the transmission shaft part of the present invention;

[0036] Fig.11 This is a partial structural diagram of the transmission shaft of the present invention.

[0037] Among them, 1. mounting ring; 101. compression tail pipe; 102. guide ring; 2. mounting mechanism; 201. mounting plate; 202. mounting cylinder; 203. mounting screws; 3. motor; 301. transmission shaft; 302. top plate; 303. ball bearing; 304. thrust bearing; 4. blade; 5. support ring; 501. support rod; 502. support; 503. auxiliary rod; 504. baffle; 6. fairing; 7. anti-skid strip; 8. rotating block; 801. slot; 9. rotating plate; 10. top rod; 11. telescopic rod; 12. nut; 13. insert block; 14. limit strip; 15. limit slot; 16. cavity one; 17. cavity two; 18. baffle; 1801. limit ring; 1802. bolt. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Please see attached Figure 1 , Figure 4 and Figure 6The embodiment of the present invention provides a safety-enhanced high-speed dynamically balanced electric ducted flight propulsor, comprising: a motor 3, which is used to drive the blades 4 to rotate, and the motor 3 is installed in the mounting ring 1 through the mounting mechanism 2; a support ring 5, which is installed in the mounting ring 1 through a fixing assembly, a support 502 is provided in the middle of the support ring 5, and the blades 4 are connected to the support 502 through a connecting assembly; the mounting ring 1 and the support 502 are connected by a plurality of support rods 501 and auxiliary rods 503, and the support rods 501 and the auxiliary rods 503 are staggered and connected by a baffle 504, and the support rods 501, the auxiliary rods 503 and the baffle 504 are arranged in a tic-tac-toe shape to block the blades 4, and the airflow enters the mounting ring 1 from between the three.

[0040] By providing rotational power to drive the blades 4 in the propeller to rotate at high speed, thrust is generated, and the motor 3 is installed in the mounting ring 1 through the mounting mechanism 2, which can help improve stability and ensure that the motor 3 will not be displaced or unbalanced due to vibration or asymmetric force during operation. At the same time, the support ring 5 can be fixedly installed in the mounting ring 1 by using a fixing component, and the support ring 5 and the support 502 are connected by a support rod 501 and an auxiliary rod 503, and the blade 4 is connected to one side of the support 502 by a connecting component, and the support 502 can play a role in supporting the blade 4. Therefore, the motor 3, the mounting mechanism 2, the support ring 5, the support 502, the support rod 501 and the auxiliary rod 503 can be used to support both sides of the blade 4 at the same time, which can ensure the stability and force balance of the blade 4 when it rotates at high speed. At the same time, the mounting ring 1 and the support 502 are connected by multiple support rods 501 and auxiliary rods 50 3 are connected, and the two are staggeredly distributed, and the two are firmly connected together by multiple baffles 504 in a tic-tac-toe structure, so the structural stability between the support rod 501, the auxiliary rod 503 and the baffle 504 can be improved, and the external impact force and the strong centrifugal force caused by the high-speed rotation of the blade 4 can be effectively resisted, and the shape structure of the mounting ring 1 can also play an auxiliary supporting role. Therefore, when the blade 4 fails, the support rod 501, the auxiliary rod 503 and the baffle 504 can play a physical blocking role on the flying debris, preventing the debris from flying out and hurting the surrounding personnel and equipment. At the same time, due to the gap between the support rod 501, the auxiliary rod 503 and the baffle 504, the airflow can smoothly pass through these components into the mounting ring 1, and then generate a stable thrust through the duct system, thereby ensuring the unimpeded flow of air.

[0041] Please see attached Figure 1 and Figure 2 A compression tail pipe 101 is connected to the side of the mounting ring 1 close to the motor 3 , and a guide ring 102 is connected to the side of the mounting ring 1 close to the blade 4 .

[0042] Since the diameter of the compression tail pipe 101 close to the installation side is larger than the diameter of the side away from the installation ring 1, that is, it is conical, the airflow can be efficiently discharged from the inside of the duct by narrowing the airflow channel, and the airflow can be further accelerated under the thrust generated by the rotation of the blades 4, thereby improving the thrust output and efficiency of the ducted propeller.

[0043] Please see attached Figure 1 , Figure 4 and Figure 5 The mounting mechanism 2 includes a mounting plate 201, one side of which is fixedly connected to the inner wall of the compression tail pipe 101, and the other side of the mounting plate 201 is fixedly connected to a mounting cylinder 202, the motor 3 is located inside the mounting cylinder 202, and the motor 3 and the mounting cylinder 202 are connected by mounting screws 203. There are multiple mounting plates 201, the mounting cylinder 202 is set in a circular shape, and the multiple mounting plates 201 are evenly distributed in a star-shaped array with the mounting cylinder 202 as the center.

[0044] Since the motor 3 is located in the mounting tube 202, and the mounting tube 202 is fixed on the inner wall of the mounting ring 1 through the mounting plate 201, it can be ensured that the motor 3 can be firmly embedded in the propeller system, and maintain the stability of its working state when running at high speed, while bearing the vibration and stress generated by the motor 3 during operation, and the material of the mounting plate 201 can be a high-strength and lightweight material, such as aluminum alloy or carbon fiber composite material, so as to minimize the overall weight of the system while ensuring strength; and multiple mounting plates 201 are radially arranged on the inner wall of the mounting ring 1 with the mounting tube 202 as the center, so that the force and vibration generated by the motor 3 can be evenly dispersed, and the overall rigidity and stability of the system can be greatly improved, preventing the motor 3 from shaking or deflecting, and ensuring that the motor 3 and the blades 4 maintain a stable dynamic balance during operation. At the same time, by setting the mounting tube 202 as a circular structure, the use of materials can be minimized while ensuring rigidity, thereby reducing the weight of the propeller. In addition, the circular ring structure can reduce air resistance, optimize the flow path of the airflow, and ensure that the airflow can be discharged more smoothly when passing through the duct, further improving the working efficiency of the ducted propeller.

[0045] Please see attached Figure 1 , Figure 4 and Figure 6 A fairing 6 is threadedly connected to one side of the support ring 5 away from the blade 4, and an anti-slip strip 7 is fixedly connected to the outer wall of the fairing 6, and the anti-slip strip 7 is set in a thin sheet shape.

[0046] By setting the shape of the fairing 6 to an elliptical shape, it can have a streamlined structure, which can effectively reduce air resistance and improve the distribution of airflow around the propeller. The fairing 6 is usually made of lightweight and high-strength materials, such as aluminum alloy or composite materials, to provide sufficient strength while minimizing weight. The fairing 6, as an external component of the aircraft, will be worn or damaged due to long-term operation or external environmental influences. The fairing 6 is fixed to the support ring 5 by a threaded manner, so the fairing 6 can be easily removed from the support 502, which is convenient for maintenance, inspection and replacement when necessary, and convenient for maintaining efficient operation of the system. At the same time, an anti-slip strip 7 is designed on the outer wall of the fairing 6. The anti-slip strip 7 can improve the physical properties of the fairing 6, and the anti-slip strip 7 is designed in a thin sheet shape, so the contact area with the airflow can be reduced. At the same time, when disassembling the fairing 6, the anti-slip strip 7 can also increase the friction between the hand and the fairing 6, thereby facilitating the disassembly of the fairing 6.

[0047] Please see attached Figure 1 , Figure 4 , Figure 7 and Figure 8 The fixing assembly includes a rotating block 8, one side of the rotating block 8 is fixedly connected to a rotating plate 9, the rotating plate 9 is rotatably connected to the inside of the support 502 away from the blade 4, the middle outer side of one side of the rotating plate 9 is rotatably connected to a push rod 10, one end of the push rod 10 is rotatably connected to a telescopic rod 11, the telescopic rod 11 passes through the support 502, the support rod 501 and the mounting ring 1 in sequence, one end of the telescopic rod 11 is threadedly connected to a nut 12, and the nut 12 is located outside the mounting ring 1.

[0048] By removing the nut 12 from the end of the telescopic rod 11, and then rotating the rotating block 8 to pull the push rod 10 to drive the telescopic rod 11 to retract, so that it is close to the middle of the rotating plate 9. When the end of the telescopic rod 11 enters the support ring 5, the support plate or the auxiliary rod 503 can be gripped at this time, and the support 502 and the support ring 5 can be pulled out from the mounting ring 1, and then the support rod 501, the auxiliary rod 503 and the support ring 5 can be replaced. During installation, by inserting the support ring 5 into the interior of the mounting ring 1, and then reversing the rotating block 8 to drive the rotating plate 9 to reverse, the push rod 10 will push the telescopic rod 11 out to expose it from the outer wall of the mounting ring 1. Finally, the nut 12 can be installed to fix the telescopic rod 11. At this time, the support ring 5, the support rod 501, the auxiliary rod 503 and the support 502 can be installed.

[0049] Please see attached Figure 1 and Figure 5The connecting component includes a transmission shaft 301, one end of which is fixedly connected to the output end of the motor 3, and the other end is provided with a top plate 302. The blade 4 is threadedly connected to the middle part of the outer wall of the transmission shaft 301, and a ball bearing 303 is installed on the side of the outer wall of the transmission shaft 301 close to the top plate 302, and the ball bearing 303, the top plate 302 and the thrust bearing 304 are all located inside the support 502 close to the blade 4.

[0050] The transmission shaft 301 can be used to transmit the power of the motor 3 to the blade 4, and the blade 4 is threadedly connected to the middle part of the outer wall of the transmission shaft 301, so that the transmission shaft 301 can evenly withstand the centrifugal force and vibration generated by the rotation of the blade 4, ensuring the stability and balance of the system, and a ball bearing 303 is fixedly connected to the side of the outer wall of the transmission shaft 301 close to the top plate 302. The ball bearing 303 can be used to support the transmission shaft 301. At the same time, it can also reduce the friction and vibration of the transmission shaft 301 during rotation, maintain the stability and low friction of the transmission shaft 301, and reducing the friction coefficient can reduce energy loss and wear of the transmission shaft 301. In addition, a thrust bearing 304 is also provided on one side of the top plate 302. The main function of the thrust bearing 304 is to bear Under axial force, that is, force applied in the direction of the transmission shaft 301, a large axial thrust will be generated due to the rotation of the blade 4, and the thrust bearing 304 can effectively disperse and absorb these forces to prevent the transmission shaft 301 from being displaced or deformed due to excessive axial load; thereby, a support system is formed by the ball bearing 303, the top plate 302 and the thrust bearing 304, and all three are located inside the support 502 on the side close to the blade 4, so one end of the transmission shaft 301 can be positioned and supported, and the other end of the transmission shaft 301 is connected to the motor 3, and the motor 3 and the mounting mechanism 2 can be used to position and support the other end of the transmission shaft 301, thereby ensuring the dynamic balance and high-precision operation of the transmission shaft 301 and the blade 4 during work.

[0051] Please see attached Figure 1 , Figure 4 , Figure 5 and Fig. 9 A cavity 16 and a cavity 2 17 are respectively provided on both sides of the support 502, the rotating block 8, the rotating plate 9, the top rod 10 and the telescopic rod 11 are all located in the cavity 16, the top plate 302, the ball bearing 303 and the thrust bearing 304 are all located in the cavity 2 17, and the thrust bearing 304 is fixedly connected to the side wall of the cavity 2 17, and a slot 801 is provided on the side of the rotating block 8 close to the fairing 6, and the slot 801 is set to be a regular hexagon.

[0052] Cavity 16 can provide working space for the rotating block 8, rotating plate 9, top rod 10 and telescopic rod 11, and after the fairing 6 is installed on the support 502, it can prevent dust, moisture and the like in the external environment from entering the interior of the component, thereby extending its service life. Cavity 2 17 can provide working space for the top plate 302, the ball bearing 303 and the thrust bearing 304. A slot 801 is provided on the side of the rotating block 8 close to the fairing 6, and the slot 801 is set to a regular hexagon, so that the rotating block 8 can be rotated. The slot 801 can also be set to a triangle, a square or a pentagon, that is, a non-circular shape.

[0053] Please see attached Figure 1 , Figure 2 and Figure 3 The inner wall of the mounting ring 1 is fixedly connected to the limiting strip 14 on one side close to the guide ring 102, and the side of the support ring 5 close to the blade 4 is in contact with the limiting strip 14. The limiting strip 14 is provided with a limiting groove 15 on one side close to the support ring 5, and the side of the support ring 5 close to the limiting strip 14 is fixedly connected to an insert block 13, and the insert block 13 is in the limiting groove 15.

[0054] When installing the support ring 5, the support ring 5 is inserted into the interior of the installation ring 1, and the insert block 13 is in contact with the limit strip 14, and then the support pillar is rotated to drive the support ring 5 to rotate. As the support ring 5 rotates, the insert block 13 can be inserted into the limit groove 15. At this time, the support ring 5 and the limit strip 14 will fit each other, so that the position of the support ring 5 can be guided. Then the rotating block 8 can be reversed to pull the top rod 10 in the opposite direction. When the airflow enters the interior of the installation ring 1, the airflow will contact the support rod 501, the auxiliary rod 503 and the baffle 504, and the impact force of the airflow on the three will act on the support ring 5. At this time, the support ring 5 has a tendency to move to the middle of the installation ring 1. At this time, the telescopic rod 11 will bear this pressure, and the limit strip 14 can be used to guide the position of the support ring 5 while also playing a role of auxiliary support for the support ring 5, and can bear the impact force of the airflow, so that the pressure on the telescopic rod 11 can be reduced, thereby improving the compressive strength of the support rod 501, the auxiliary rod 503 and the baffle 504.

[0055] Please see attached Fig.10 and Fig.11 A baffle 18 is fixedly connected to the side of the outer wall of the transmission shaft 301 close to the motor 3, and the baffle 18 contacts one side of the blade 4. A limit ring 1801 is provided on the side of the outer wall of the transmission shaft 301 away from the motor 3, and a bolt 1802 is installed on one side of the limit ring 1801, and the bolt 1802 passes through the transmission shaft 301.

[0056] After the fairing 6 and the support 502 are removed, the support 502 can remove the top plate 302, the ball bearing 303 and the thrust bearing 304, and then the guide ring 102 and the compression tail pipe 101 are separated from the mounting ring, and then the bolt 1802 is removed by using a tool, and the limit ring 1801 can be pulled out from the transmission shaft 301, and finally the blade 4 can be removed, and the blade 4 can be rotated to remove it for replacement. When the replacement is completed, the blade 4 is installed first, and the upper limit ring 1801 is installed last, and then the limit ring 1801 is locked with the bolt 1802, so that the loading and unloading of the blade 4 becomes convenient, and it is convenient for later The blade 4 is replaced, and the blade 4 is threadedly connected to the transmission shaft 301, and the tightening direction of the blade 4 is opposite to the rotation direction of the blade 4. Therefore, when the transmission shaft 301 rotates, the reaction force of its inertia will make the blade 4 and the transmission shaft 301 tighter and tighter, thereby avoiding loosening between the blade 4 and the transmission shaft 301, and the limit ring 1801 and the baffle 18 on the transmission shaft are in contact with the two sides of the blade 4 respectively. Therefore, when the blade 4 loses its dynamic balance due to an impact or sudden situation such as a propeller explosion, the limit ring 1801 and the baffle 18 can be used to limit the blade 4, so that it will not shake greatly when it loses its dynamic balance.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Safety-enhanced high-speed dynamic-balance electric ducted flight propulsor, characterized in that: include: A motor (3) for driving the blades (4) to rotate, and the motor (3) is installed in the mounting ring (1) via a mounting mechanism (2); A support ring (5) is installed in the mounting ring (1) via a fixing assembly, a support seat (502) is provided in the middle of the support ring (5), and the blade (4) is connected to the support seat (502) via a connecting assembly; The mounting ring (1) and the support (502) are connected via a plurality of support rods (501) and auxiliary rods (503), and the support rods (501) and the auxiliary rods (503) are arranged in a staggered manner and connected via blocking bars (504). The support rods (501), the auxiliary rods (503) and the blocking bars (504) are arranged in a tic-tac-toe pattern to block the blades (4), and airflow enters the mounting ring (1) from between the three.

2. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 1, characterized in that: The side of the mounting ring (1) close to the motor (3) is connected to a compression tail pipe (101), and the side of the mounting ring (1) close to the blade (4) is connected to a guide ring (102).

3. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 2, characterized in that: The mounting mechanism (2) comprises a mounting plate (201), one side of the mounting plate (201) is fixedly connected to the inner wall of the compression tail pipe (101), the other side of the mounting plate (201) is fixedly connected to a mounting cylinder (202), the motor (3) is located inside the mounting cylinder (202), and the motor (3) and the mounting cylinder (202) are connected via mounting screws (203).

4. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 3, characterized in that: A plurality of the mounting plates (201) are provided, the mounting cylinder (202) is provided in a circular ring shape, and the plurality of mounting plates (201) are evenly distributed in a star-shaped array with the mounting cylinder (202) as the center.

5. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 1, characterized in that: A fairing (6) is threadedly connected to the side of the support ring (5) away from the blades (4); an anti-slip strip (7) is fixedly connected to the outer wall of the fairing (6); and the anti-slip strip (7) is configured in the form of a thin sheet.

6. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 1, characterized in that: The fixing assembly comprises a rotating block (8), one side of the rotating block (8) is fixedly connected to a rotating plate (9), the rotating plate (9) is rotatably connected to the inside of a side of a support (502) away from the blade (4), a middle outer side of one side of the rotating plate (9) is rotatably connected to a push rod (10), one end of the push rod (10) is rotatably connected to a telescopic rod (11), the telescopic rod (11) passes through the support (502), the support rod (501) and the mounting ring (1) in sequence, one end of the telescopic rod (11) is threadedly connected to a nut (12), and the nut (12) is located outside the mounting ring (1).

7. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 6, characterized in that: The connection assembly comprises a transmission shaft (301), one end of which is fixedly connected to the output end of the motor (3), and the other end of which is provided with a top plate (302); the blade (4) is threadedly connected to the middle part of the outer wall of the transmission shaft (301); a ball bearing (303) is installed on the side of the outer wall of the transmission shaft (301) close to the top plate (302); a thrust bearing (304) is provided on one side of the top plate (302); and the ball bearing (303), the top plate (302) and the thrust bearing (304) are all located inside the support (502) on the side close to the blade (4).

8. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 7, characterized in that: The support (502) is provided with a cavity one (16) and a cavity two (17) on both sides respectively; the rotating block (8), the rotating plate (9), the top rod (10) and the telescopic rod (11) are all located in the cavity one (16); the top plate (302), the ball bearing (303) and the thrust bearing (304) are all located in the cavity two (17); and the thrust bearing (304) is fixedly connected to the side wall of the cavity two (17); and a slot (801) is provided on a side of the rotating block (8) close to the fairing (6), and the slot (801) is arranged in a regular hexagon.

9. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 2, characterized in that: A side of the inner wall of the mounting ring (1) close to the guide ring (102) is fixedly connected to a limiting strip (14); a side of the support ring (5) close to the blade (4) is in contact with the limiting strip (14); a side of the limiting strip (14) close to the support ring (5) is provided with a limiting groove (15); a side of the support ring (5) close to the limiting strip (14) is fixedly connected to an insert block (13), and the insert block (13) is located in the limiting groove (15).

10. The safety-enhanced high-speed dynamically balanced electric ducted flight propulsor according to claim 7, characterized in that: A baffle (18) is fixedly connected to a side of the outer wall of the transmission shaft (301) close to the motor (3), and the baffle (18) contacts one side of the blade (4). A limit ring (1801) is provided on a side of the outer wall of the transmission shaft (301) away from the motor (3), and a bolt (1802) is installed on one side of the limit ring (1801), and the bolt (1802) passes through the transmission shaft (301).

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