Paddle limiting and buffering structure

Abstract

The utility model discloses a blade limit buffer structure, including cover plate and connecting seat, the two cover plate are provided, the two cover plate are respectively provided on connecting seat front and rear end face, connecting seat middle part is provided with connecting through hole, connecting through hole is in the clamping connection with propeller rotating shaft, connecting seat both side wall is provided with the bump, connecting seat middle part is provided with the connecting through hole, connecting seat middle part is provided with the connecting through hole, connecting seat middle part is provided with the connecting through hole, connecting seat middle part is provided with the bump, connecting seat middle part is provided with the connecting through hole. The buffering mechanism is arranged between the two cover plates to buffer the impact of centrifugal force on the propeller rotating shaft when the blades rotate, the rotating stability of the propeller rotating shaft is guaranteed, meanwhile, the propeller rotating shaft of the helicopter exerts certain force on the connecting block in the rotating process, the connecting block presses the first spring to generate displacement, and the propeller rotating shaft is prevented from rotating. Impact of centrifugal force is automatically adjusted in the using process, the service life of the propeller limiting structure is prolonged, the blades are installed on the clamping base, the fourth connecting hole and the two third connecting holes are distributed in a triangular mode, fixing is stable and firm, and the blades rotate more stably and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a blade limiting buffer structure. Background Art

[0002] The propeller is one of the most important parts in the UAV power system. During high-speed rotation, protecting the blades is crucial. During high-speed rotation of existing propellers, since the hub and the propeller shaft are fixed, the centrifugal force generated has a large impact on the propeller shaft, which can easily cause the shaft to wear and damage.

[0003] Therefore, it is necessary to provide a blade limiting buffer structure to solve the above technical problems. Utility Model Content

[0004] The purpose of the present invention is to provide a blade limiting buffer structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a blade limiting buffer structure, including a cover plate and a connecting seat, wherein two cover plates are provided, and the two cover plates are respectively arranged on the front and rear end surfaces of the connecting seat, a connecting through-hole is provided in the middle of the connecting seat, a propeller shaft is clamped in the connecting through-hole, protrusions are provided on both side walls of the connecting seat, and mounting posts are provided on the side walls of the two protrusions, a placement hole is provided in the mounting post, the placement hole passes through the connecting through-hole, a limiting post is provided in the placement hole, a limiting hole for the limiting post to pass through is provided on the outer circumference of the propeller shaft, and the two A buffer mechanism is provided on the side wall opposite to the cover plate, and the buffer mechanism covers the outer circumference of the propeller shaft. Connectors are provided at both ends between the two cover plates, and the connectors include a connecting portion and a clamping portion. A base is clamped on the outer circumference of the connecting portion, and a clamping hole is provided on the side wall of the base. A clamping joint is clamped in the clamping hole, and the end of the clamping joint away from the base is sleeved on the outer circumference of the connecting portion. A second groove is provided at one end of the base, and two third connecting holes and a fourth connecting hole are provided on the base. The fourth connecting hole and the two third connecting holes all pass through the second groove, and a blade is provided in the second groove.

[0006] As an optimal technical solution of the present invention, the buffer mechanism includes two connecting blocks, the two connecting blocks are arranged opposite to each other, and the side walls facing the two connecting blocks are provided with an arc groove, the arc groove is semicircular, and the two arc grooves cover the propeller shaft, the side wall of the connecting block is provided with two first sliding holes, the two first sliding holes are located on both sides of the arc groove, and buffer columns are provided in the two facing first sliding holes, and an insertion hole is provided in the middle of one side wall of the buffer column, and a second spring is provided in the insertion hole, one end of the buffer column can slide along the first sliding hole, and a boss is provided in the middle of the other side wall of the connecting block, and a second sliding hole is provided in the middle of the side wall of the boss, and a fixed column is slidably provided in the second sliding hole, and the end of the fixing column away from the boss is fixed on the side wall of the cover plate, and the side wall of the boss is provided with a placement groove, and a first spring is provided between the bottom of the placement groove and the side wall of the fixing column.

[0007] As a preferred technical solution of the present invention, two sliding grooves are provided on the inner wall of the second sliding hole, and two sliding protrusions are provided on the outer circumferential surface of the fixed column, and the sliding protrusions slide in cooperation with the sliding grooves.

[0008] As a preferred technical solution of the present invention, a first groove is provided on the side wall of the clamping part, two first connecting holes are provided on the front of the clamping part, the first connecting holes pass through the first groove, and four first mounting holes are provided on the front of the cover plate, the four first mounting holes are respectively opposite to the first connecting holes of the two clamping parts, and the two connecting heads are locked between the two cover plates by bolts passing through the first mounting holes and the first connecting holes in sequence, and a connecting column is provided on the bolt.

[0009] As an optimal technical solution of the present utility model, two connecting ears are provided in parallel on the front of the socket, and two second connecting holes are provided on each of the two connecting ears. A fixing block is clamped between the two connecting ears, and a resistance portion is provided at one end of the fixing block. The end face of the resistance portion is arc-shaped, and two fifth connecting holes are provided on the resistance portion. A second slot is provided at the other end of the fixing block, and a third mounting hole is provided on the side wall of the fixing block. A bolt is inserted into the third mounting hole, and the fixing block is fixedly connected to the component installed on the propeller shaft through the second slot.

[0010] As a preferred technical solution of the present invention, a hole is opened on the blade, which is opposite to the fourth connection hole and the two third connection holes, and the fourth connection hole and the two third connection holes are distributed in a triangular shape.

[0011] As an optimal technical solution of the present invention, a second mounting hole is provided on the front side of the cover plate, the mounting post passes through the second mounting hole, a movable clamp is sleeved on the mounting post, a clamping ring is sleeved on the outer circumference of the movable clamp, the clamping ring is clamped on the inner wall of the second mounting hole, a gasket is provided on the end face of the movable clamp, a limiting nut is sleeved on the end face of the limiting post, the limiting nut is pressed on the end face of the gasket, and a through hole is provided on the outer circumference of the limiting post.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model discloses a blade limiting buffer structure, which fixes the connecting seat and the propeller shaft of the drone together by inserting a limiting column on the connecting seat and the propeller shaft of the drone, and arranges a buffer mechanism between the two cover plates to buffer the impact of the centrifugal force on the propeller shaft when the blades rotate. The connecting block is pushed to slide by the first spring so that the arc grooves of the two connecting blocks are close to the outer circumferential surface of the propeller shaft, thereby ensuring the smooth rotation of the propeller shaft. At the same time, the propeller shaft of the helicopter applies a certain force to the connecting block during the rotation process, and the connecting block presses the first spring to cause displacement, thereby exerting pressure on the propeller shaft. The blade is fixed to the second slot by tightening the nut. The fourth connecting hole and the two third connecting holes are distributed in a triangle. This distribution makes the blade firm and secure after being locked. A fixing block is provided on the front of the holder, which is fixedly connected to the component installed on the propeller shaft through the second slot, thereby further fixing the holder. The fixing is stable and secure, making the rotation of the blade more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a three-dimensional exploded schematic diagram of the overall structure of the utility model;

[0017] Figure 3 This is a three-dimensional exploded schematic diagram of the buffer mechanism structure of the utility model;

[0018] Figure 4 It is a three-dimensional schematic diagram of the cover structure of the utility model;

[0019] Figure 5 This is a three-dimensional schematic diagram of the connecting seat structure of the utility model;

[0020] Figure 6This is a three-dimensional schematic diagram of the connection block structure of the utility model;

[0021] Figure 7 This is a three-dimensional schematic diagram of the connector structure of the utility model;

[0022] Figure 8 This is a three-dimensional schematic diagram of the card holder structure of the utility model;

[0023] Figure 9 It is a three-dimensional schematic diagram of the fixed block structure of the utility model.

[0024] In the figure: 1, cover plate; 101, first mounting hole; 102, second mounting hole; 2, connecting seat; 21, connecting through hole; 22, protrusion; 23, mounting column; 231, placement hole; 3, buffer mechanism; 31, connecting block; 311, arc groove; 312, first sliding hole; 313, protrusion; 3131, second sliding hole; 3132, placement groove; 3133, sliding groove; 32, fixing column; 321, sliding protrusion; 33, first spring; 34, second spring; 35, buffer column; 351, socket; 4, connecting Connector; 41. Connecting portion; 42. Clamping portion; 421. First slot; 422. First connecting hole; 5. Clamping seat; 51. Clamping hole; 52. Connecting ear; 521. Second connecting hole; 53. Second slot; 54. Third connecting hole; 55. Fourth connecting hole; 6. Fixing block; 61. Interference portion; 611. Fifth connecting hole; 62. Clamping slot; 63. Third mounting hole; 7. Connecting column; 8. Movable clamp; 9. Snap ring; 10. Limiting column; 11. Propeller shaft; 111. Limiting hole; 12. Clamping connector. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention with reference to the accompanying drawings. In the process, to ensure clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the drawings.

[0026] In addition, the following terms are defined based on the functions of the present invention and may vary depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire content of this specification.

[0027] like Figures 1 to 5As shown, a blade limiting and buffering structure includes a cover plate 1 and a connecting seat 2, wherein the cover plates 1 are provided with two, and the two cover plates 1 are respectively arranged on the front and rear end surfaces of the connecting seat 2, a connecting through hole 21 is provided in the middle of the connecting seat 2, and a propeller shaft 11 is clamped in the connecting through hole 21, and a protrusion 22 is provided on both side walls of the connecting seat 2, and two mounting columns 23 are provided on the side walls of the protrusions 22, and a placement hole 231 is provided in the mounting column 23, and the placement hole 231 passes through the connecting through hole 21, and a limiting column 10 is provided in the placement hole 231, and a limiting hole 111 is provided on the outer circumference of the propeller shaft 11 for the limiting column 10 to pass through, thereby fixing the connecting seat 2 on the propeller shaft of the drone, and a buffer mechanism 3 is provided on the side walls facing the two cover plates 1, and the buffer mechanism 3 covers the outer circumference of the propeller shaft 11 to prevent the propeller shaft 11 from shaking too much during rotation.

[0028] like Figure 3 and Figure 6 As shown, the buffer mechanism 3 includes two connecting blocks 31, the two connecting blocks 31 are arranged opposite each other, and the side walls facing the two connecting blocks 31 are each provided with an arc groove 311, the arc groove 311 is semicircular, and the two arc grooves 311 cover the propeller shaft 11 so that the propeller shaft 11 rotates between the two arc grooves 311, and the side wall of the connecting block 31 is provided with two first sliding holes 312, the two first sliding holes 312 are located on both sides of the arc groove 311. On the other side, a buffer column 35 is provided in the two opposite first sliding holes 312, and a plug hole 351 is opened in the middle of one side wall of the buffer column 35. A second spring 34 is provided in the plug hole 351. One end of the buffer column 35 can slide along the first sliding hole 312. A boss 313 is provided in the middle of the other side wall of the connecting block 31. A second sliding hole 3131 is opened in the middle of the side wall of the boss 313. A fixing column 32 is slidably provided in the second sliding hole 3131. The fixing column 32 is provided in the fixing hole 3131. When the locking cam 31 is unlocked, the locking cam 313 is unlocked and the winch 33 is unlocked, so that the winch 33 can be unlocked when the winch 33 is unlocked.

[0029] like Figures 7 to 9 As shown, a connector 4 is provided at both ends between the two cover plates 1, and the connector 4 includes a connecting portion 41 and a clamping portion 42. The side wall of the clamping portion 42 is provided with a first slot 421, and the front of the clamping portion 42 is provided with two first connecting holes 422. The first connecting holes 422 pass through the first slot 421. The front of the cover plate 1 is provided with four first mounting holes 101. The four first mounting holes 101 are respectively opposite to the first connecting holes 422 of the two clamping portions 42. The two connectors 4 are locked to the two cover plates 1 by bolts that pass through the first mounting holes 101 and the first connecting holes 422 in sequence. A connecting column 7 is sleeved on the bolt, and a card seat 5 is clamped on the outer circumference of the connecting part 41. A clamping hole 51 is provided on the side wall of the card seat 5, and a clamping joint 12 is clamped in the clamping hole 51. The end of the clamping joint 12 away from the card seat 5 is sleeved on the outer circumference of the connecting part 41, and the card seat 5 and the connector 4 are fixedly connected together through the clamping joint 12. Two connecting ears 52 are provided in parallel on the front of the card seat 5. Two second connecting holes 521 are provided on the two connecting ears 52. A fixing block 6 is clamped between the two connecting ears 52. A resistance portion 61 is provided at one end of the fixing block 6. The end surface of the contact portion 61 is arc-shaped, and two fifth connecting holes 611 are provided on the contact portion 61. The bolts pass through the second connecting hole 521 and the fifth connecting hole 611 in sequence and are locked by nuts, thereby locking the fixing block 6 on the base 5. A second card slot 62 is provided at the other end of the fixing block 6, and a third mounting hole 63 is provided on the side wall of the fixing block 6. A bolt is inserted into the third mounting hole 63, and the fixing block 6 is fixedly connected to the component installed on the propeller shaft 11 through the second card slot 62, further fixing the base 5, and fixing it stably and firmly. A second cut is provided at one end of the base 5 away from the connecting ear 52. Slot 53, two third connecting holes 54 and a fourth connecting hole 55 are provided on the card seat 5, the fourth connecting hole 55 and the two third connecting holes 54 all pass through the second slot 53, a blade is provided in the second slot 53, and a hole is provided on the blade that is opposite to the fourth connecting hole 55 and the two third connecting holes 54. Three bolts pass through the third connecting hole 54 and the fourth connecting hole 55 and the blade respectively, and the blade is fixed and locked in the second slot 53 by tightening the nut. The fourth connecting hole 55 and the two third connecting holes 54 are distributed in a triangle. This distribution makes the blade firm and secure after being locked.

[0030] like Figure 2As shown, the cover plate 1 is provided with a second mounting hole 102 on the front side, the mounting column 23 passes through the second mounting hole 102, and a movable clamp 8 is sleeved on the mounting column 23. The outer circumference of the movable clamp 8 is sleeved with a clamping ring 9, and the clamping ring 9 is clamped on the inner wall of the second mounting hole 102. A gasket is provided on the end face of the movable clamp 8, and a limiting nut is sleeved on the end face of the limiting column 10. The limiting nut is pressed on the end face of the gasket. A through hole is provided on the outer circumference of the limiting column 10, and a limiting clamp is inserted in the through hole to limit the limiting nut.

[0031] The specific implementation method is as follows: the limiting column 10 is inserted into the connecting seat 2 and the drone propeller shaft 11 to fix the two together, and a buffer mechanism 3 is set between the two cover plates 1 to buffer the impact of the centrifugal force on the propeller shaft 11 when the blades rotate. The first spring 33 pushes the connecting block 31 to slide, so that the arc grooves 311 of the two connecting blocks 31 are close to the outer circumferential surface of the propeller shaft 11, ensuring the smooth rotation of the propeller shaft 11. At the same time, the propeller shaft 11 of the helicopter applies a certain force to the connecting block 31 during the rotation process, and the connecting block 31 presses the first spring 33 to cause displacement, thereby exerting a force on the propeller shaft 11. The buffering effect enables it to automatically adjust the impact of centrifugal force during use, thereby extending the service life of the propeller limiting structure. The blade is installed on the base 5, and three bolts are respectively passed through the third connecting hole 54 and the fourth connecting hole 55 and the blade. The blade is fixed and locked in the second slot 53 by tightening the nut. The fourth connecting hole 55 and the two third connecting holes 54 are distributed in a triangular shape. This distribution makes the blade firm and secure after being locked. A fixing block 6 is provided on the front of the base 5, which is fixedly connected to the component installed on the propeller shaft 11 through the second slot 62, further fixing the base 5, fixing it stably and firmly, and making the blade rotate more smoothly and reliably.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A blade limiting buffer structure, comprising a cover plate (1) and a connecting seat (2), wherein two cover plates (1) are provided, and the two cover plates (1) are respectively provided on the front and rear end surfaces of the connecting seat (2), characterized in that: A connecting through hole (21) is provided in the middle of the connecting seat (2), a propeller shaft (11) is clamped in the connecting through hole (21), protrusions (22) are provided on both side walls of the connecting seat (2), mounting posts (23) are provided on the side walls of the two protrusions (22), a placement hole (231) is provided in the mounting posts (23), the placement hole (231) passes through the connecting through hole (21), a limiting post (10) is provided in the placement hole (231), a limiting hole (111) for the limiting post (10) to pass through is provided on the outer circumference of the propeller shaft (11), a buffer mechanism (3) is provided on the side walls facing the two cover plates (1), the buffer mechanism (3) covers the outer circumference of the propeller shaft (11), and the two A connecting head (4) is provided at both ends of the cover plate (1), and the connecting head (4) includes a connecting portion (41) and a clamping portion (42). A clamping seat (5) is clamped on the outer circumference of the connecting portion (41), a clamping hole (51) is provided on the side wall of the clamping seat (5), a clamping joint (12) is clamped in the clamping hole (51), and the end of the clamping joint (12) away from the clamping seat (5) is sleeved on the outer circumference of the connecting portion (41). A second groove (53) is provided at one end of the clamping seat (5), and two third connecting holes (54) and a fourth connecting hole (55) are provided on the clamping seat (5). The fourth connecting hole (55) and the two third connecting holes (54) all pass through the second groove (53), and a paddle is provided in the second groove (53).

2. The blade limiting buffer structure according to claim 1, characterized in that: The buffer mechanism (3) includes two connecting blocks (31), the two connecting blocks (31) are arranged opposite to each other, and the side walls of the two connecting blocks (31) facing each other are each provided with an arc groove (311), the arc groove (311) is semicircular, and the two arc grooves (311) cover the propeller shaft (11), and the side wall of the connecting block (31) is provided with two first sliding holes (312), the two first sliding holes (312) are located on both sides of the arc groove (311), and a buffer column (35) is provided in the two facing first sliding holes (312), and a plug hole (351) is provided in the middle of one side wall of the buffer column (35), and the plug hole (351) is provided in the middle of the one side wall of the buffer column (35). 51) is provided with a second spring (34), one end of the buffer column (35) can slide along the first sliding hole (312), a boss (313) is provided in the middle of the other side wall of the connecting block (31), a second sliding hole (3131) is provided in the middle of the side wall of the boss (313), a fixing column (32) is slidably provided in the second sliding hole (3131), one end of the fixing column (32) away from the boss (313) is fixedly provided on the side wall of the cover plate (1), a placement groove (3132) is provided on the side wall of the boss (313), and a first spring (33) is provided between the bottom of the placement groove (3132) and the side wall of the fixing column (32).

3. The blade limiting buffer structure according to claim 2, characterized in that: Two sliding grooves (3133) are provided on the inner wall of the second sliding hole (3131), and two sliding protrusions (321) are provided on the outer circumferential surface of the fixing column (32). The sliding protrusions (321) slide in cooperation with the sliding grooves (3133).

4. The blade limiting buffer structure according to claim 1, characterized in that: The side wall of the clamping portion (42) is provided with a first slot (421), the front of the clamping portion (42) is provided with two first connection holes (422), the first connection holes (422) pass through the first slot (421), the front of the cover plate (1) is provided with four first mounting holes (101), the four first mounting holes (101) are respectively opposite to the first connection holes (422) of the two clamping portions (42), and the two connectors (4) are locked between the two cover plates (1) by bolts passing through the first mounting holes (101) and the first connection holes (422) in sequence, and the bolts are provided with a connection column (7).

5. The blade limiting buffer structure according to claim 1, characterized in that: Two connecting ears (52) are provided in parallel on the front of the card seat (5), and two second connecting holes (521) are provided on the two connecting ears (52). A fixed block (6) is clamped between the two connecting ears (52), and a resistance portion (61) is provided at one end of the fixed block (6), and the end surface of the resistance portion (61) is arc-shaped. Two fifth connecting holes (611) are provided on the resistance portion (61). A second card slot (62) is provided at the other end of the fixed block (6), and a third mounting hole (63) is provided on the side wall of the fixed block (6). A bolt is inserted into the third mounting hole (63), and the fixed block (6) is fixedly connected to a component installed on the propeller shaft (11) through the second card slot (62).

6. The blade limiting buffer structure according to claim 1, characterized in that: The blade is provided with a hole that is directly opposite to the fourth connection hole (55) and the two third connection holes (54), and the fourth connection hole (55) and the two third connection holes (54) are distributed in a triangular shape.

7. The blade limiting buffer structure according to claim 1, characterized in that: The cover plate (1) is provided with a second mounting hole (102) on the front side, the mounting column (23) passes through the second mounting hole (102), a movable clamp (8) is sleeved on the mounting column (23), a clamping ring (9) is sleeved on the outer circumference of the movable clamp (8), the clamping ring (9) is clamped on the inner wall of the second mounting hole (102), a gasket is provided on the end face of the movable clamp (8), a limiting nut is sleeved on the end face of the limiting column (10), the limiting nut is pressed on the end face of the gasket, and a through hole is provided on the outer circumference of the limiting column (10).

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