Double-layer propeller, icebreaking test device and aircraft

Abstract

The invention discloses a double-layer propeller, an icebreaking test device and an aircraft, the double-layer propeller comprises a supporting assembly and a blade assembly, the supporting assembly comprises a connecting piece, a first supporting piece and a second supporting piece, the first supporting piece and the second supporting piece are coaxially arranged, and the first supporting piece and / or the second supporting piece can be relatively connected and slide; and the first supporting piece and the second supporting piece can stay at any position on the sliding track of the first supporting piece and the second supporting piece. The paddle assembly comprises a first rotary vane and a second rotary vane, the first rotary vane is arranged on the first supporting piece, and the second rotary vane is arranged on the second supporting piece. The first supporting piece is sleeved with the first rotary vane, the second supporting piece is sleeved with the second rotary vane, and the first rotary vane and the second rotary vane can be driven to rotate by driving the first supporting piece and the second supporting piece to rotate. When the distance between the first rotary blade and the second rotary blade is changed, the second supporting piece slides relative to the first supporting piece, and then the distance between the first rotary blade and the second rotary blade is changed, so that the distance between the rotary blades of the double-layer propeller can be adjusted to meet the use requirements of different scenes.

Description

Technical Field

[0001] The present invention relates to the field of marine equipment, and in particular to a double-layer propeller, an icebreaking test device and a navigation vehicle. Background Art

[0002] As the global climate warms, the Antarctic and Arctic glaciers are gradually melting, and the Arctic routes are receiving more and more attention. Many countries are building icebreakers, and my country is also developing polar heavy icebreakers.

[0003] Double-layer propellers are a common propeller type, and exploring their effectiveness on icebreakers is of great research value. Existing double-layer propellers can be found in patent application number CN201710422161.3. However, the pitch between the two blades of these double-layer propellers is fixed. However, double-layer propellers with different pitches have different propulsion capabilities and ice-breaking effects. Researchers need to conduct experiments with different blade pitches to find the most suitable one.

[0004] However, the existing technology is unable to adjust the spacing between the two layers of blades of a double-layer propeller, resulting in researchers having to replace the double-layer propeller with a different blade spacing every time they conduct an experiment, making the experimental operation process cumbersome and complicated. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a double-layer propeller, an icebreaking test device and a vehicle to solve the technical problem in the prior art that the spacing between the two layers of blades of a double-layer propeller cannot be adjusted.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In one aspect, the present invention provides a double-layer propeller comprising: A support assembly comprising a connecting member, a first supporting member, and a second supporting member, wherein the first supporting member and the second supporting member are coaxially arranged on the connecting member, the first supporting member and / or the second supporting member can slide relative to the connecting member, and the first supporting member and / or the second supporting member can stay at any position on their sliding trajectory; and The blade assembly includes a first rotary blade and a second rotary blade. The first rotary blade is arranged on the first support member, and the second rotary blade is arranged on the second support member.

[0007] In some embodiments, the first support member has a first rotating end rotatably connected to the first rotor blade and / or the second support member has a second rotating end rotatably connected to the second rotor blade, so as to adjust the misalignment angle between the first rotor blade and the second rotor blade.

[0008] In some embodiments, the first rotating end includes a rotating shaft, and the second supporting member includes a sliding shaft. One end of the rotating shaft is rotatably connected to the connecting member, and it can stay at any position on its rotating trajectory. The sliding shaft is axially slidably arranged on the connecting member, and it can stay at any position on its sliding trajectory, wherein the first rotating blade is arranged on the rotating shaft, and the second rotating blade is arranged on the sliding shaft.

[0009] In some embodiments, the support assembly further includes a dislocation driving member, which is mounted on the connecting member and is transmission-connected to the rotating shaft to drive the rotating shaft to rotate relative to the connecting member.

[0010] In some embodiments, the connecting member has a plurality of driving teeth, and the offset driving member includes a rotating motor and an offset gear, the offset gear is engaged with the driving teeth, the rotating motor is installed on the rotating shaft, and the rotating motor is transmission-connected to the offset gear to drive the connecting member to rotate relative to the rotating shaft through the offset gear.

[0011] In some embodiments, a slot is defined in the rotating shaft, and the rotating motor is received in the slot.

[0012] In some embodiments, a partition is provided in the connecting member, and the partition separates the sliding shaft and the driving tooth.

[0013] In some embodiments, the first support member has a first receiving space therein, the first rotor has a first state in which it is at least partially hidden in the first receiving space, and a second state in which it completely protrudes from the first receiving space, the second support member has a second receiving space therein, the second rotor has a third state in which it is at least partially hidden in the second receiving space, and a fourth state in which it completely protrudes from the second receiving space.

[0014] In some embodiments, the support assembly includes a first telescopic drive member and a second telescopic drive member, the first receiving space includes a plurality of first receiving grooves, the first rotary vane includes a plurality of first blades, and the plurality of first blades are slidably arranged in the plurality of first receiving grooves in a one-to-one manner, the first telescopic drive member is transmission-connected to each of the first blades to drive the first blade to slide in the first receiving groove so that the first rotary vane switches between the first state and the second state, the second receiving space includes a plurality of second receiving grooves, the second rotary vane includes a plurality of second blades, and the plurality of second blades are slidably arranged in the plurality of second receiving grooves in a one-to-one manner, the second telescopic drive member is transmission-connected to each of the second blades to drive the second blade to slide in the second receiving groove so that the second rotary vane switches between the third state and the fourth state.

[0015] In some embodiments, a plurality of the first receiving grooves are arranged along the circumference of the rotating shaft, and the first receiving grooves extend along the radial direction of the rotating shaft, so that the first blades can slide along the radial direction of the rotating shaft.

[0016] In some embodiments, the first telescopic drive member includes the first electric push rod and the first connecting rod, the base of the first electric push rod is fixed to the rotating shaft, one end of the first connecting rod is hinged to the driving end of the first electric push rod, and the other end thereof is hinged to the first blade, and the first blade is driven to slide along the first storage groove by the first electric push rod.

[0017] In some embodiments, a plurality of the first connecting rods are hinged to the driving end of the same first electric push rod.

[0018] In some embodiments, a plurality of the second receiving grooves are arranged along the circumference of the sliding shaft body, and a plurality of the second receiving grooves extend along the radial direction of the sliding shaft body, so that the second blades can slide along the radial direction of the sliding shaft body.

[0019] In some embodiments, the second telescopic drive member includes the second electric push rod and the second connecting rod. The base of the second electric push rod is fixed inside the sliding shaft. One end of the second connecting rod is hinged to the driving end of the second electric push rod, and the other end is hinged to the second blade. The second blade is driven to slide along the second storage groove by the second electric push rod.

[0020] In some embodiments, a plurality of second connecting rods are hinged to the driving end of the same second electric push rod.

[0021] In some embodiments, the rotating shaft body also has a plurality of first baffles corresponding one-to-one to the plurality of first receiving grooves, and the first baffles are detachably installed at the openings of the first receiving grooves to close the first receiving grooves. The sliding shaft body also has a plurality of second baffles corresponding one-to-one to the plurality of second receiving grooves, and the second baffles are detachably installed at the openings of the second receiving grooves to close the second receiving grooves.

[0022] In some embodiments, the support assembly further includes a distance-adjusting driving member, which is transmission-connected to the first support member and the second support member to drive the first support member and the second support member to slide relative to each other.

[0023] In some embodiments, the distance-adjusting driving member includes a distance-adjusting electric push rod, which is built into the connecting member, and two ends of the distance-adjusting electric push rod are respectively connected to the connecting member and the first support member or the second support member.

[0024] On the other hand, the present invention also provides an icebreaking test device, which includes the above-mentioned double-layer propeller.

[0025] In yet another aspect, the present invention further provides an aircraft comprising the above-mentioned double-layer propeller.

[0026] The first rotor is sleeved on the first support member, and the second rotor is sleeved on the second support member. By driving the first and second support members to rotate, the first and second rotors can be driven to rotate. When the spacing between the first and second rotors needs to be changed, the second support member can be slid relative to the first support member, thereby driving the second rotor to move axially relative to the first rotor, changing the spacing between the first and second rotors. This allows the rotor spacing of the double-layer propeller to be adjusted to suit different usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of a double-layer propeller provided by an embodiment of the present invention; Figure 2 1 is a schematic structural diagram of another state of the double-layer propeller provided by an embodiment of the present invention; Figure 3 1 is a structural schematic diagram of a double-layer propeller provided by another embodiment of the present invention; Figure 4 1 is a schematic structural diagram of a double-layer propeller in another state provided by another embodiment of the present invention; Explanation of the accompanying drawings: support assembly 100, first support member 110, rotating shaft 111, first receiving groove 1112, first baffle 1113, second support member 120, sliding shaft 121, second receiving groove 1211, second baffle 1212, offset drive member 130, rotating motor 131, offset gear 132, first telescopic drive member 140, first electric push rod 141, first connecting rod 142, second telescopic drive member 150, second electric push rod 151, second connecting rod 152, pitch adjustment drive member 160, pitch adjustment electric push rod 161, connecting member 170, driving tooth 171, partition 172, blade assembly 200, first rotary blade 210, first blade 211, second rotary blade 220, second blade 221. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] In order to solve the technical problem of how to adjust the spacing between the two layers of blades of a double-layer propeller, the present invention provides a double-layer propeller, the blade spacing of the double-layer propeller can be adjusted to meet the usage requirements of different scenarios.

[0030] It should be noted that the double-layer propeller of the present invention is used for but not limited to icebreaking test equipment, etc. For the convenience of explanation, in the present invention, only the application of the double-layer propeller to the icebreaking test equipment is used as an example for explanation. The principle of applying the double-layer propeller to the aircraft is essentially the same as the principle of applying it to the icebreaking test equipment, and they will not be described one by one here.

[0031] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a double-layer propeller according to one embodiment of the present invention. The double-layer propeller includes a support assembly 100 and a blade assembly 200. The support assembly 100 includes a first support member 110, a second support member 120, and a connecting member 170. The first support member 110 and the second support member 120 are coaxially arranged. The first support member 110 and / or the second support member 120 can slide relative to the connecting member 170 and can remain at any position along their sliding path. The blade assembly 200 includes a first rotor 210 and a second rotor 220. The first rotor 210 is arranged on the periphery of the first support member 110, and the second rotor 220 is arranged on the periphery of the second support member 120.

[0032] In this embodiment, the first rotor 210 is mounted on the first support member 110, and the second rotor 220 is mounted on the second support member 120. By rotating the first support member 110 and the second support member 120, the first rotor 210 and the second rotor 220 can be driven to rotate. When the spacing between the first rotor 210 and the second rotor 220 needs to be changed, the second support member 120 can be slid relative to the first support member 110, thereby driving the second rotor 220 to move axially relative to the first rotor 210, thereby changing the spacing between the first rotor 210 and the second rotor 220. This allows the rotor spacing of the double-layer propeller to be adjusted to suit different usage scenarios.

[0033] It is understood that not only the pitch of the rotor blades of a double-layer propeller affects propulsion performance and icebreaking effectiveness, but also the misalignment angle of the rotor blades. In some embodiments, the first support member 110 has a first rotating end rotatably connected to the first rotor blade 210, and / or the second support member 120 has a second rotating end rotatably connected to the second rotor blade 220, so as to adjust the misalignment angle between the first rotor blade 210 and the second rotor blade 220.

[0034] It should be noted that any implementation method that can adjust the misalignment angle between the first and second rotor blades 210, 220 is feasible. For example, the first rotor blade 210 can be rotated about the axis of the first support member 110, or the second rotor blade 220 can be rotated about the axis of the second support member 120. Rotating the first or second rotor blade 210, 220 can adjust the misalignment angle between the first and second rotor blades 210, 220. However, it should be noted that once the misalignment angle between the first and second rotor blades 210, 220 is adjusted, the relative position of the first rotor blade 210 and the first support member 110, or the relative position of the second rotor blade 220 and the second support member 120, needs to be re-fixed so that the first and second supports 110, 120 can smoothly drive the first and second rotor blades 210, 220 to rotate.

[0035] In some embodiments, the first support member 110 includes a rotating shaft 111 and a connecting member 170, and the second support member 120 includes a sliding shaft 121. One end of the rotating shaft 111 is rotatably connected to the connecting member 170 and can remain at any position along its rotation trajectory. The sliding shaft 121 is axially slidably disposed on the connecting member 170 and can remain at any position along its sliding trajectory. The first rotor 210 is disposed on the rotating shaft 111, and the second rotor is disposed on the sliding shaft 121. Since the rotating shaft 111 can rotate relative to the connecting member 170, the rotation of the rotating shaft 111 can drive the first rotor 210 to rotate relative to the second rotor 220, and the sliding shaft 121 slides circumferentially relative to the connecting member 170, thereby driving the second rotor 220 to translate to adjust the spacing between the first rotor 210 and the second rotor 220. It should be emphasized here that once the relative rotation adjustment of the rotating shaft 111 and the connecting member 170 is completed, the rotating shaft 111 and the connecting member 170 need to be fixed to each other. Once the relative sliding of the sliding shaft 121 and the connecting member 170 is completed, the sliding shaft 121 and the connecting member 170 also need to be fixed to each other.

[0036] Based on the above embodiments, in some embodiments, the support assembly 100 includes a misalignment driver 130, which is mounted on the connecting member 170 and is in transmission connection with the rotating shaft 111 to drive the rotating shaft 111 to rotate relative to the connecting member 170. The misalignment driver 130 drives the rotating shaft 111 and the connecting member 170 to rotate, thereby driving the first rotor 210 to rotate, thereby adjusting the misalignment angle between the first rotor 210 and the second rotor 220. At the same time, the misalignment driver 130 can also be used to lock the rotating shaft 111 and the connecting member 170, thereby fixing the misalignment angle between the first rotor 210 and the second rotor 220.

[0037] It is understandable that the implementation of the dislocation driving member 130 is not unique. The dislocation driving member 130 only needs to drive the rotating shaft 111 and the connecting member 170 to rotate relative to each other, and lock the rotating shaft 111 and the connecting member 170 after the rotation is completed.

[0038] In some embodiments, the connecting member 170 has a plurality of driving teeth 171 therein, and the offset driving member 130 includes a rotating motor 131 and an offset gear 132. The offset gear 132 meshes with the driving teeth 171. The rotating motor 131 is mounted on the rotating shaft 111 and is in transmission connection with the offset gear 132, so that the connecting member 170 is driven to rotate relative to the rotating shaft 111 via the offset gear 132. The rotating motor 131 drives the offset gear 132 to rotate, and the rotating offset gear 132 drives the connecting member 170 to rotate, and after the rotation is completed, the rotating shaft 111 and the connecting member 170 are locked.

[0039] It should be emphasized that the rotating shaft 111 has a slot for accommodating the rotating motor 131 and the battery for powering it. Furthermore, a partition 172 should be provided within the connector 170 to isolate the sliding shaft 121 and the driving gear 171 from each other, preventing the sliding shaft 121 from obstructing the rotation of the driving gear 171.

[0040] In some embodiments, the first support member 110 has a first receiving space therein, the first rotor 210 has a first state in which it is at least partially hidden in the first receiving space, and a second state in which it completely protrudes from the first receiving space, the second support member 120 has a second receiving space therein, the second rotor 220 has a third state in which it is at least partially hidden in the second receiving space, and a fourth state in which it completely protrudes from the second receiving space.

[0041] In the above embodiment, by completely concealing the first rotor 210 within the first receiving space, the second rotor 220 remains solely for propulsion (or ice breaking). Similarly, by completely concealing the second rotor 220 within the second receiving space, the second rotor 220 remains solely for propulsion (or ice breaking). Alternatively, both the first and second rotors 210, 220 can be concealed for protection, preventing them from colliding with floating ice. Furthermore, the first rotor 210 (or second rotor 220) can be partially concealed within the first receiving space (or second receiving space), thereby varying the amount of the first rotor 210 (or second rotor 220) protruding from the first receiving space (or second receiving space). These embodiments allow for a greater variety of configurations in the double-layer propeller, adapting it to a wider range of usage scenarios.

[0042] See also Figure 1 and Figure 2 In some embodiments, the support assembly 100 includes a first telescopic drive member 140 and a second telescopic drive member 150, the first receiving space includes a plurality of first receiving grooves 1112, the first rotary vane 210 includes a plurality of first blades 211, and the plurality of first blades 211 are slidably arranged in the plurality of first receiving grooves 1112 in a one-to-one manner, the first telescopic drive member 140 is transmission-connected to each first blade 211 to drive the first blade 211 to slide in the first receiving groove 1112, so that the first rotary vane 210 switches between the first state and the second state, the second receiving space includes a plurality of second receiving grooves 1211, the second rotary vane 220 includes a plurality of second blades 221, and the plurality of second blades 221 are slidably arranged in the plurality of second receiving grooves 1211 in a one-to-one manner, the second telescopic drive member 150 is transmission-connected to each second blade 221 to drive the second blade 221 to slide in the second receiving groove 1211, so that the second rotary vane 220 switches between the third state and the fourth state.

[0043] In the above embodiment, the first telescopic driving member 140 drives the first blade 211 to slide within the first receiving groove 1112, so that the first blade 211 can switch back and forth between a position protruding from the first receiving groove 1112 and a position hidden in the first receiving groove 1112. The second telescopic driving member 150 drives the second blade 221 to slide within the second receiving groove 1211, so that the second blade 221 can switch back and forth between a position protruding from the second receiving groove 1211 and a position hidden in the second receiving groove 1211.

[0044] It is understandable that the layout directions of the first receiving groove 1112 and the second receiving groove 1211 are various, and similarly, the implementation methods of the first telescopic driving member 140 and the second telescopic driving member 150 are also various.

[0045] In some embodiments, a plurality of first receiving grooves 1112 are arranged along the circumference of the rotating shaft 111 and extend radially along the rotating shaft 111, allowing the first blade 211 to slide radially along the rotating shaft 111. The first telescopic drive member 140 includes a first electric push rod 141 and a first connecting rod 142, wherein the base of the first electric push rod 141 is fixed inside the rotating shaft 111, one end of the first connecting rod 142 is hinged to the driving end of the first electric push rod 141, and the other end of the first connecting rod 142 is hinged to the first blade 211, thereby enabling the first electric push rod 141 to drive the first blade 211 to slide along the first receiving grooves 1112. A plurality of second receiving grooves 1211 are arranged along the circumference of the sliding shaft 121 and extend radially along the sliding shaft 121, allowing the second blade 221 to slide radially along the sliding shaft 121. The second telescopic driving member 150 includes a second electric push rod 151 and a second connecting rod 152, wherein the base of the second electric push rod 151 is fixed inside the sliding shaft 121, one end of the second connecting rod 152 is hinged to the driving end of the second electric push rod 151, and the other end thereof is hinged to the second blade 221, and the second electric push rod 151 can drive the second blade 221 to slide along the second storage groove 1211.

[0046] In addition, each first connecting rod 142 can be hinged to the driving end of the same first electric push rod 141, so that the first electric push rod 141 can drive the multiple first blades 211 to slide synchronously. Each second connecting rod 152 can be hinged to the driving end of the same second electric push rod 151, so that the second electric push rod 151 can drive the multiple second blades 221 to slide synchronously.

[0047] It is understandable that, see Figure 3 and Figure 4The first receiving groove 1112 does not need to be strictly aligned with the radial direction of the rotating shaft 111. Instead, the first receiving groove 1112 is tilted along the axial direction of the rotating shaft 111, allowing the rotating shaft 111 to accommodate a larger first blade 211. Similarly, the second receiving groove 1211 does not need to be strictly aligned with the radial direction of the sliding shaft 121. Instead, the second receiving groove 1211 is tilted along the axial direction of the sliding shaft 121, allowing the sliding shaft 121 to accommodate a larger second blade 221.

[0048] In addition, see Figure 3 The rotating shaft 111 also has a plurality of first baffles 1113 corresponding one-to-one to the plurality of first receiving grooves 1112. The first baffles 1113 are detachably mounted at the openings of the first receiving grooves 1112. The sliding shaft 121 also has a plurality of second baffles 1212 corresponding one-to-one to the plurality of second receiving grooves 1211. The plurality of second baffles 1212 are detachably mounted at the openings of the second receiving grooves 1211. When the first blade 211 protrudes from the first receiving groove 1112, the first baffles 1113 can be removed. When the first blade 211 is hidden in the first receiving groove 1112, the first baffles 1113 can be used to close the opening of the first receiving groove 1112. When the second blade 221 protrudes from the second receiving groove 1211, the second baffles 1212 can be removed. When the second blade 221 is hidden in the second receiving groove 1211 , the second baffle 1212 can be used to close the opening of the second receiving groove 1211 .

[0049] In some embodiments, the support assembly 100 further includes a distance-adjusting driver 160, which is in transmission connection with the first support member 110 and the second support member 120 to drive the first support member 110 and the second support member 120 to slide relative to each other. The embodiment of the distance-adjusting driver 160 is not limited, as long as it can drive the first support member 110 and the second support member 120 to slide relative to each other along the axial direction.

[0050] In one embodiment, the pitch-adjusting drive 160 includes a pitch-adjusting electric push rod 161, which is built into a connecting member 170. The ends of the pitch-adjusting electric push rod 161 are respectively connected to the connecting member 170 and the first support member 110 or the second support member 120. The first support member 110 and the second support member 120 can then be moved by the extension and retraction of the pitch-adjusting electric push rod 161.

[0051] On the other hand, the present invention provides an icebreaking test device comprising the aforementioned double-layer propeller. This device can simulate icebreaking scenarios for double-layer propellers with varying blade spacing, blade misalignment angles, and blade extension / retraction conditions. It is understood that in these icebreaking scenarios, the propulsion effects of the double-layer propellers in different states can be simulated, as can the ice-breaking effects of the double-layer propellers in different states. The operator can flexibly adjust the configuration of the double-layer propellers according to test requirements.

[0052] In another aspect, the present invention provides an aircraft comprising the aforementioned double-layer propeller. It is understood that double-layer propellers used in aircraft require excellent reliability and stability. While the double-layer propellers in some of the aforementioned embodiments are structurally complex, these embodiments are primarily intended for use as test platforms. However, the design principles of the double-layer propellers in this application also have considerable practical value for aircraft such as submarines and ships. Those skilled in the art may select and apply certain embodiments of this application to specific aircraft based on practical needs.

[0053] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the present invention is described in detail: The rotating motor 131 is connected to the offset gear 132, which drives the connecting member 170 to rotate relative to the rotating shaft 111. The rotating motor 131 drives the offset gear 132 to rotate, which in turn drives the connecting member 170 to rotate, thereby driving the first rotor 210 to rotate relative to the second rotor 220. After the rotating motor 131 completes its rotation, it locks the rotating shaft 111 and the connecting member 170, thereby fixing the offset angle between the first and second rotors 210, 220. The adjustable pitch electric push rod 161 is connected to the connecting member 170 and the sliding shaft 121 at both ends. The adjustable pitch electric push rod 161 can be extended or retracted to drive the rotating shaft 111 to slide relative to the connecting member 170, thereby adjusting the relative sliding of the first and second rotors 210, 220. After the spacing between the first and second rotor blades 210, 220 is adjusted, the pitch-adjustable electric push rod 161 can be used to fix the relative distance between the first and second rotor blades 210, 220. The double-layer propeller provided in this embodiment allows for flexible adjustment of the misalignment angle between the first and second rotor blades 210, 220, as well as the spacing between the first and second rotor blades 210, 220, allowing the double-layer propeller to adapt to different usage scenarios.

[0054] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A double-layer propeller, characterized in that: include: A support assembly comprising a connecting member, a first supporting member, and a second supporting member, wherein the first supporting member and the second supporting member are coaxially arranged on the connecting member, the first supporting member and / or the second supporting member can slide relative to the connecting member, and the first supporting member and / or the second supporting member can stay at any position along their sliding trajectory; and The blade assembly includes a first rotary blade and a second rotary blade. The first rotary blade is arranged on the first support member, and the second rotary blade is arranged on the second support member.

2. The double-layer propeller according to claim 1, characterized in that: The first support member has a first rotating end rotatably connected to the first rotor blade and / or the second support member has a second rotating end rotatably connected to the second rotor blade, so as to adjust the misalignment angle between the first rotor blade and the second rotor blade.

3. The double-layer propeller according to claim 2, characterized in that: The first rotating end includes a rotating shaft, and the second supporting member includes a sliding shaft. One end of the rotating shaft is rotatably connected to the connecting member, and it can stay at any position on its rotating trajectory. The sliding shaft is axially slidably arranged on the connecting member, and it can stay at any position on its sliding trajectory, wherein the first rotating vane is arranged on the rotating shaft, and the second rotating vane is arranged on the sliding shaft.

4. The double-layer propeller according to claim 3, characterized in that: The support assembly further includes a dislocation driving member, which is mounted on the connecting member and is transmission-connected to the rotating shaft to drive the rotating shaft to rotate relative to the connecting member.

5. The double-layer propeller according to claim 4, characterized in that: The connecting member has a plurality of driving teeth therein, and the offset driving member includes a rotating motor and an offset gear, the offset gear is engaged with the driving teeth, the rotating motor is installed on the rotating shaft, and the rotating motor is transmission-connected to the offset gear to drive the connecting member to rotate relative to the rotating shaft through the offset gear.

6. The double-layer propeller according to claim 5, characterized in that: A slot is provided in the rotating shaft, and the rotating motor is received in the slot.

7. The double-layer propeller according to claim 5, characterized in that: A partition is provided in the connecting member, and the partition separates the sliding shaft and the driving teeth.

8. The double-layer propeller according to claim 1, characterized in that: The first support member has a first receiving space therein, the first rotor has a first state in which it is at least partially hidden in the first receiving space, and a second state in which it completely protrudes from the first receiving space, the second support member has a second receiving space therein, the second rotor has a third state in which it is at least partially hidden in the second receiving space, and a fourth state in which it completely protrudes from the second receiving space.

9. The double-layer propeller according to claim 8, characterized in that: The support assembly includes a first telescopic drive member and a second telescopic drive member, the first receiving space includes a plurality of first receiving grooves, the first rotary vane includes a plurality of first blades, and the plurality of first blades are slidably arranged in the plurality of first receiving grooves in a one-to-one manner, the first telescopic drive member is transmission-connected to each of the first blades to drive the first blades to slide in the first receiving groove so that the first rotary vane switches between the first state and the second state, the second receiving space includes a plurality of second receiving grooves, the second rotary vane includes a plurality of second blades, and the plurality of second blades are slidably arranged in the plurality of second receiving grooves in a one-to-one manner, the second telescopic drive member is transmission-connected to each of the second blades to drive the second blades to slide in the second receiving groove so that the second rotary vane switches between the third state and the fourth state.

10. The double-layer propeller according to claim 9, characterized in that: A plurality of the first receiving grooves are arranged along the circumferential direction of the rotating shaft body, and the first receiving grooves extend along the radial direction of the rotating shaft body, so that the first blades can slide along the radial direction of the rotating shaft body.

11. The double-layer propeller according to claim 10, characterized in that: The first telescopic driving member includes the first electric push rod and the first connecting rod. The base of the first electric push rod is fixed to the rotating shaft. One end of the first connecting rod is hinged to the driving end of the first electric push rod, and the other end is hinged to the first blade. The first blade is driven to slide along the first storage groove by the first electric push rod.

12. The double-layer propeller according to claim 11, characterized in that: A plurality of the first connecting rods are hinged to the driving end of the same first electric push rod.

13. The double-layer propeller according to claim 9, characterized in that: A plurality of the second receiving grooves are arranged along the circumferential direction of the sliding shaft body, and a plurality of the second receiving grooves extend along the radial direction of the sliding shaft body, so that the second blades can slide along the radial direction of the sliding shaft body.

14. The double-layer propeller according to claim 13, characterized in that: The second telescopic driving member includes the second electric push rod and the second connecting rod. The base of the second electric push rod is fixed inside the sliding shaft. One end of the second connecting rod is hinged to the driving end of the second electric push rod, and the other end is hinged to the second blade. The second blade is driven to slide along the second storage groove by the second electric push rod.

15. The double-layer propeller according to claim 14, characterized in that: A plurality of the second connecting rods are hinged to the driving end of the same second electric push rod.

16. The double-layer propeller according to claim 9, characterized in that: The rotating shaft body also has a plurality of first baffles corresponding one-to-one to the plurality of first receiving grooves, and the first baffles are detachably installed at the openings of the first receiving grooves to close the first receiving grooves. The sliding shaft body also has a plurality of second baffles corresponding one-to-one to the plurality of second receiving grooves, and the second baffles are detachably installed at the openings of the second receiving grooves to close the second receiving grooves.

17. The double-layer propeller according to claim 1, characterized in that: The support assembly further includes a distance-adjusting driving member, which is transmission-connected to the first support member and the second support member to drive the first support member and the second support member to slide relative to each other.

18. The double-layer propeller according to claim 17, characterized in that: The distance-adjusting driving member includes a distance-adjusting electric push rod, which is built into the connecting member, and two ends of the distance-adjusting electric push rod are respectively connected to the connecting member and the first support member or the second support member.

19. An ice breaking test device, characterized in that: Comprising the double-layer propeller according to any one of claims 1-18.

20. An aircraft, characterized in that: Comprising the double-layer propeller according to any one of claims 1-18.

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