Unmanned aerial vehicle rotor motor protection device and spraying operation unmanned aerial vehicle
By designing protective devices on the drone rotor motor, and utilizing a high-density material capture structure and a mesh flow channel to separate the fluid, the problems of overheating and stalling caused by exposed motor rotors were solved, enabling the motor to operate normally under liquid spraying conditions.
Patent Information
- Application Number
- CN202520556753.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The rotor of a drone's rotor motor is directly exposed to the air, causing the surface to become covered with dirt, leading to problems such as overheating and stalling.
A protective device for a drone rotor motor was designed, including a mounting bracket and a protective capture component. The device uses a high-density material capture structure to separate and capture droplets and particulate matter in the fluid entering the vent. The airflow is guided and diverted through a mesh channel to prevent foreign objects from entering the motor and ensure that the motor operates normally under liquid spraying conditions.
It effectively prevents fluid from entering the motor, alleviates overheating caused by foreign matter deposits, and ensures normal operation of the motor under liquid spraying conditions.
Smart Images
Figure CN223878219U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle rotor motor protection device and a spraying unmanned aerial vehicle. BACKGROUND
[0002] An unmanned aerial vehicle generally comprises a fuselage and a frame, a flight control system, a power system, etc. The power system mainly comprises a motor (i.e. an unmanned aerial vehicle rotor motor), an electronic speed controller, a battery, and a propeller, etc. The unmanned aerial vehicle rotor motor is usually a brushless direct current motor. The electronic speed controller receives signals from a flight controller to control the speed of the motor, thereby adjusting the rotation speed of the propeller and the generated lift. The battery is the energy source of the unmanned aerial vehicle, and the mainstream battery of the unmanned aerial vehicle is a lithium battery. The propeller is generally made of plastic, carbon fiber, etc. and is driven to rotate by the motor to generate lift and thrust. The shape, size and material of the propeller will affect the flight performance of the unmanned aerial vehicle. In the power system of the existing unmanned aerial vehicle, the motor rotor of the unmanned aerial vehicle rotor motor is directly exposed to the air, and dirt such as paint on the surface will cause problems such as overheating and locked rotor. SUMMARY
[0003] In view of this, the present application provides an unmanned aerial vehicle rotor motor protection device and a spraying unmanned aerial vehicle to solve the problem that the motor rotor of the existing unmanned aerial vehicle is directly exposed to the air, and dirt such as paint on the surface will cause problems such as overheating and locked rotor.
[0004] In the first aspect, the present application provides an unmanned aerial vehicle rotor motor protection device for protecting the air vent of an unmanned aerial vehicle rotor motor. The unmanned aerial vehicle rotor motor protection device comprises a mounting bracket and a protection and capture assembly fixed to the end of the mounting bracket. The protection and capture assembly comprises a heavy object capture structure. The mounting bracket is used to be sleeved on the protection shell of the unmanned aerial vehicle rotor motor to fix the positional relationship between the protection and capture assembly and the unmanned aerial vehicle rotor motor. The protection and capture assembly separates and captures liquid droplets and / or particulate matters in the fluid entering the air vent through the heavy object capture structure, thereby protecting the air vent of the unmanned aerial vehicle rotor motor, alleviating the overheating caused by the deposition of foreign matters in the fluid motor, and ensuring the normal operation of the motor under liquid spraying conditions.
[0005] In some embodiments, the heavy object capture structure comprises a plurality of flow channel turning structures, and the plurality of flow channel turning structures are staggered distributed at the air vent of the unmanned aerial vehicle rotor motor. The heavy object capture structure further comprises an upper sealing plate and a lower sealing plate. The upper sealing plate and the lower sealing plate are respectively connected to both ends of the flow channel turning structures to enclose a meshed flow channel communicating with the air vent of the unmanned aerial vehicle rotor motor and the external environment. The meshed flow channel is used to guide the airflow entering the air vent to be diverted and branched, thereby separating and capturing liquid droplets and / or particulate matters.
[0006] In some embodiments, the flow channel turning structure comprises at least one sheet, which is arranged at an angle with respect to another radially adjacent sheet and is not connected to the other sheet, so that a plurality of the sheets form a turning and branched meshed flow channel, and the sheets are arranged in the same direction with respect to another circumferentially adjacent sheet, so that the meshed flow channel is uniform and regular.
[0007] In some embodiments, the inlet of the meshed flow channel is arranged at an angle with respect to the outer circumference, and the angle is between 30° and 60°.
[0008] In some embodiments, the width of the inlet of the meshed flow channel is arranged in proportion to the wall thickness of the flow channel turning structure, and the proportion is greater than 5:1.
[0009] In some embodiments, the shortest path of the fluid through the meshed flow channel is constrained by the plurality of flow channel turning structures to turn multiple times, the shortest path is defined as from a first inlet to a first outlet, the straight line distance from the first outlet to the first inlet is less than that of other inlets, the average of the inlet / outlet side wall angle is defined as the angle of the path at the inlet / outlet, the cumulative total turning angle of the multiple turns is between 120° and 450°, and the turning angle is counted into the total turning angle in absolute value regardless of the direction.
[0010] In some embodiments, the protective capture assembly comprises at least an upper protective capture structure; the upper protective capture structure comprises a first protective capture component and a second protective capture component, a first end of the first protective capture component is clamped to a second clamping portion on a second end of the second protective capture component, a first end of the second protective capture component is clamped to a first clamping portion on a second end of the first protective capture component, and the two ends of the first protective capture component and the two ends of the second protective capture component are clamped and connected to form a circular ring structure.
[0011] In some embodiments, the upper protective capture structure is connected to a first end of the mounting bracket; a second end of the mounting bracket is connected to an annular fixing structure, and when the unmanned aerial vehicle comprises coaxial dual rotors, the annular fixing structure is a lower protective capture structure.
[0012] A temperature sensor is further fixedly arranged on the protective capture structure.
[0013] In some embodiments, the lower protective capture structure comprises a third protective capture component and a fourth protective capture component, a first end of the third protective capture component is clamped to a fourth clamping portion on a second end of the fourth protective capture component, a first end of the fourth protective capture component is clamped to a third clamping portion on a second end of the third protective capture component, and the two ends of the third protective capture component and the two ends of the fourth protective capture component are clamped and connected to form a circular ring structure.
[0014] In a second aspect, the present application also provides a spraying unmanned aerial vehicle, comprising a liquid spraying assembly and the unmanned aerial vehicle rotor motor protection device as described in the first aspect and any possible embodiment thereof.
[0015] The unmanned aerial vehicle rotor motor protection device and the spraying unmanned aerial vehicle provided by the present application have the following beneficial effects: compared with the prior art, when the unmanned aerial vehicle rotor motor protection device in the present application is fixed at the position of the unmanned aerial vehicle rotor motor, the protection capturing assembly separates and captures the fluid in the airflow entering the air vent through the high specific gravity object capturing structure, so as to prevent the fluid from entering the interior of the motor and thus protect the air vent of the unmanned aerial vehicle rotor motor, alleviate the overheating of the motor interior caused by the deposition of foreign matters, and ensure the normal operation of the motor in the liquid spraying working condition. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows.
[0017] Figure 1 is a structural schematic diagram of an unmanned aerial vehicle rotor motor protection device provided by the present application;
[0018] Figure 2 is a structural schematic diagram of a high specific gravity object capturing structure in an unmanned aerial vehicle rotor motor protection device provided by the present application;
[0019] Figure 3A is a cross-sectional structural schematic diagram of a high specific gravity object capturing structure in an unmanned aerial vehicle rotor motor protection device provided by the present application;
[0020] Figure 3B is a cross-sectional structural schematic diagram of a high specific gravity object capturing structure in an unmanned aerial vehicle rotor motor protection device provided by the present application, showing the flow direction of the fluid in the net-shaped flow channel;
[0021] Figure 4 is a first structural schematic diagram of an unmanned aerial vehicle rotor motor protection device provided by the present application, showing that the unmanned aerial vehicle rotor motor protection device is sleeved on a protection shell of the unmanned aerial vehicle rotor motor;
[0022] Figure 5 is a second structural schematic diagram of an unmanned aerial vehicle rotor motor protection device provided by the present application, showing that the unmanned aerial vehicle rotor motor protection device is sleeved on a protection shell of the unmanned aerial vehicle rotor motor;
[0023] Figure 6 is a third structural schematic diagram of an unmanned aerial vehicle rotor motor protection device provided by the present application, showing that the unmanned aerial vehicle rotor motor protection device is sleeved on a protection shell of the unmanned aerial vehicle rotor motor;
[0024] Figure 7is a structural schematic diagram of a spraying operation unmanned aerial vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION
[0025] In the following description, for the purposes of explanation and not limitation, specific details are set forth, such as particular sequences of acts, techniques, etc., in order to provide a thorough understanding of the embodiments of the application. However, it will be apparent to those skilled in the art that the embodiments of the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the embodiments of the application with unnecessary detail.
[0026] It should also be understood that the term “and / or” as used herein, refers to a combination of at least one of the associated listed items, and all possible combinations of the associated listed items, and includes these combinations.
[0027] It should be noted that when an element is referred to as being “fixed to” or “set on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.
[0028] It should be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience of description and simplification of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
[0029] In addition, in the description of the present application and the appended claims, the terms “first”, “second”, “third” and the like are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.
[0030] In the present specification, the phrase “one embodiment” or “some embodiments” or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases “in some embodiments”, “in some embodiments”, “in other embodiments”, “in additional embodiments” and the like, in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specifically noted. The terms “comprise”, “comprises”, “comprising”, “include”, “includes”, “including” and the like mean “including but not limited to”, unless otherwise specifically noted. “Plural” means two or more.
[0031] The technical solutions of the present application are described below through specific embodiments.
[0032] With reference to Figure 1 and Figure 7 , Figure 1 is a structural schematic diagram of a UAV rotor motor protection device provided by an embodiment of the present application, Figure 7 is a structural schematic diagram of a spraying operation UAV with a UAV rotor motor protection device provided by an embodiment of the present application. As shown in Figure 1 and Figure 7 , the UAV rotor motor protection device 100 is used for protecting the air vent of the UAV rotor motor 210; the UAV rotor motor protection device 100 comprises a mounting bracket 110 and a protection capturing assembly 120 locked and fixed at the end of the mounting bracket 110, the protection capturing assembly 120 comprises a high specific gravity object capturing structure 1201; the mounting bracket 110 is used for sleeving on the UAV rotor motor protection shell 220 so as to fix the positional relationship between the protection capturing assembly 120 and the UAV rotor motor 210, and the protection capturing assembly 120 separates and captures liquid droplets and / or particulate matters in the fluid entering the air vent through the high specific gravity object capturing structure 1201 so as to protect the air vent of the UAV rotor motor, alleviate the overheating caused by the deposition of foreign matters in the fluid motor, and ensure the normal operation of the motor in the liquid spraying working condition.
[0033] In the present embodiment, when the above-mentioned UAV rotor motor protection device 100 is used for protecting the air vent of the UAV rotor motor 210, the number of the UAV rotor motor protection device 100 can be determined according to the number of the UAV rotor motors 210 arranged on the UAV 200. In the present application, the structure of the UAV rotor motor protection device 100 arranged on the air vent of one UAV rotor motor 210 on the UAV 200 is described in detail.
[0034] The mounting bracket 110 of the unmanned aerial vehicle rotor motor protection device 100 is used as the main frame structure of the unmanned aerial vehicle rotor motor protection device, which is sleeved on the unmanned aerial vehicle rotor motor protection shell 220 to fix the positional relationship between the protection capturing assembly 120 and the unmanned aerial vehicle rotor motor 210. In order to enable the unmanned aerial vehicle arm 230 to pass through the unmanned aerial vehicle rotor motor protection shell 220, a channel needs to be reserved on the unmanned aerial vehicle rotor motor protection shell 220, so that the unmanned aerial vehicle arm 230 can pass through. After the unmanned aerial vehicle rotor motor protection device 100 is sleeved on the unmanned aerial vehicle rotor motor protection shell 220 through the mounting bracket 110, in order to realize the protection function, the protection capturing assembly 120 needs to be locked and fixed at both ends of the mounting bracket 110, and the ventilation opening of the unmanned aerial vehicle rotor motor 210 is protected by the protection capturing assembly. In this way, when the unmanned aerial vehicle carries a task load system such as a liquid spraying assembly for spraying high-altitude vertical surfaces, the liquid droplets in the airflow entering the ventilation opening of the unmanned aerial vehicle rotor motor 210 can be captured to prevent entering the motor interior, thereby protecting the ventilation opening of the unmanned aerial vehicle rotor motor and ensuring the normal operation of the unmanned aerial vehicle rotor motor under the liquid spraying working condition. Moreover, the protection structure of the protection capturing assembly 120 is located at the position of the ventilation opening of the unmanned aerial vehicle rotor motor, which can also ensure the normal flow of gas in the motor interior.
[0035] In some embodiments, as shown in Figure 2 、 Figure 3A 、 Figure 3B and Figure 7 , the heavy object capturing structure 1201 includes a plurality of flow channel turning structures 12011, and the plurality of flow channel turning structures 12011 are staggered distributed at the ventilation opening of the unmanned aerial vehicle rotor motor. The heavy object capturing structure 1201 further includes an upper sealing plate 12012 and a lower sealing plate 12013, which are connected to the two ends of the flow channel turning structure 12011 to form a meshed flow channel 12014 connected to the ventilation opening of the unmanned aerial vehicle rotor motor and the external environment. The meshed flow channel 12014 is used to guide the airflow entering the ventilation opening to be diverted and separated to capture liquid droplets and / or particulate matter.
[0036] In the present embodiment, the specific structure of the large specific gravity capturing structure 1201 is described first. The large specific gravity capturing structure 1201 includes a plurality of flow channel turning structures 12011, which are distributed in the ventilation port of the unmanned aerial vehicle rotor motor in a staggered manner, so that the fluid in the airflow entering the ventilation port is captured by the flow channel turning structure 12011. Moreover, the large specific gravity capturing structure 1201 further includes an upper sealing plate 12012 and a lower sealing plate 12013, which are respectively connected to both ends of the flow channel turning structure 12011, and together with the flow channel turning structure 12011 form a mesh flow channel 12014 connected to the ventilation port of the unmanned aerial vehicle rotor motor 210 and the external environment. A plurality of mesh flow channels 12014 can be used to guide the airflow entering the ventilation port of the unmanned aerial vehicle rotor motor to be diverted and branched, thereby achieving the effect of separating and capturing the fluid in the airflow.
[0037] In some embodiments, as shown in Figure 2 、 Figure 3A 、 Figure 3B and Figure 7 When the ventilation port of the unmanned aerial vehicle rotor motor 210 is arranged in a ring shape at the end of the unmanned aerial vehicle rotor motor 210, the flow channel turning structure 12011 includes at least one sheet-shaped member 12011A, which is arranged at an angle with another sheet-shaped member 12011A adjacent in the radial direction and does not connect to each other, so that a plurality of sheet-shaped members form a mesh flow channel that is turned and has branches. The sheet-shaped member is arranged in the same direction as another sheet-shaped member adjacent in the circumferential direction, so that the mesh flow channel 12014 is uniform and regular.
[0038] In the present embodiment, the mesh flow channel can be arranged in the following ways during implementation: (1) The inlet of the mesh flow channel is arranged at an angle with the outer circumference, and the angle is between 30° and 60° (for reference Figure 3B(1) the angle a, a between the tangent line at the intersection of the direction line of the inlet of the mesh flow channel and the outer circle and the tangent line at the intersection of the direction line of the outlet of the mesh flow channel and the outer circle, and the value range is 30°-60°); (2) the inlet width of the mesh flow channel is proportionally set with the wall thickness of the flow channel turning structure, and the proportion is greater than 5:1; (3) the shortest path of the fluid through the mesh flow channel 12014 is constrained to occur multiple turns by the plurality of flow channel turning structures 12011, the shortest path is defined as from the first inlet 120141 to the first outlet 120142, the straight line distance from the first outlet 120142 to the first inlet 120141 is less than other inlets, the average value of the inlet / outlet side wall angle is defined as the angle of the path at the inlet / outlet, the cumulative total turning angle of multiple turns is between 120°-450°, and the turning angle is counted into the total turning angle without considering the direction (for details, refer to Figure 3B ). Through the above setting mode, the mesh flow channel can be used to guide the airflow diversion of the air inlet of the unmanned aerial vehicle rotor motor, so as to realize the effect of separating and capturing liquid droplets and / or particulate matter in the fluid.
[0039] In some embodiments, as shown in Figure 1 and Figure 7 , the mounting bracket 110 includes an upper mounting portion 111, a lower mounting portion 112, a first locking fixing member 113, and a second locking fixing member 114; the upper mounting portion 111 and the lower mounting portion 112 are respectively sleeved on the unmanned aerial vehicle rotor motor protection shell 220; one end of the first locking fixing member 113 is connected with the upper mounting portion 111, and the other end of the first locking fixing member 113 is connected with the lower mounting portion 112; one end of the second locking fixing member 114 is connected with the upper mounting portion 111, and the other end of the second locking fixing member 114 is connected with the lower mounting portion 112, and the second locking fixing member 114 is arranged opposite to the first locking fixing member 113.
[0040] In the embodiment, in order to realize the stable fixing of the unmanned aerial vehicle rotor motor protection device 100 on the unmanned aerial vehicle rotor motor protection shell 220, the mounting bracket 110 can be specifically provided with an upper mounting portion 111, a lower mounting portion 112, a first locking fixing member 113 and a second locking fixing member 114; the upper mounting portion 111 and the lower mounting portion 112 are respectively sleeved on the unmanned aerial vehicle rotor motor protection shell 220; and the first locking fixing member 113 is connected at one end to the upper mounting portion 111 and at the other end to the lower mounting portion 112; the second locking fixing member 114 is connected at one end to the upper mounting portion 111 and at the other end to the lower mounting portion 112. Through this structure, the mounting bracket 110 formed by the upper mounting portion 111, the lower mounting portion 112, the first locking fixing member 113 and the second locking fixing member 114 can be fixed on the unmanned aerial vehicle rotor motor protection shell 220, and the fixing of the unmanned aerial vehicle rotor motor protection device 100 is completed. Moreover, the protection and capture assembly 120 at the end of the mounting bracket 110 protects the air vent of the unmanned aerial vehicle rotor motor 210.
[0041] The first locking fixing member 113 and the second locking fixing member 114 are in close contact with the outer wall of the unmanned aerial vehicle rotor motor protection shell 220, and the lengths of the first locking fixing member 113 and the second locking fixing member 114 are slightly longer than the length of the unmanned aerial vehicle rotor motor protection shell 2202, so that the two ends of the first locking fixing member 113 and the second locking fixing member 114 extend to the upper mounting portion 111 and the lower mounting portion 112, respectively. After the locking fixing member with the above structure is arranged, it is convenient to subsequently install and fix the protection and capture assembly.
[0042] In some embodiments, as shown in Figures 1-7 The protection and capture assembly 120 at least includes an upper protection and capture structure 121; the upper protection and capture structure 121 includes a first protection and capture component 1211 and a second protection and capture component 1212, the first end of the first protection and capture component 1211 is clamped on the second clamping portion 1212a of the second end of the second protection and capture component 1212, the first end of the second protection and capture component 1212 is clamped on the first clamping portion 1211a of the second end of the first protection and capture component 1211; and the two ends of the first protection and capture component 1211 and the two ends of the second protection and capture component 1212 are respectively clamped and connected to form a circular ring structure.
[0043] In the embodiment, the upper protection capturing structure 121 is sleeved on the upper mounting portion 111, so two protection capturing components with semicircular cross sections are spliced to form a complete circular ring structure, specifically, the first protection capturing component 1211 and the second protection capturing component 1212 are used to complete the splicing, wherein the first end of the first protection capturing component 1211 is clamped on the second clamping portion 1212a of the second end of the second protection capturing component 1212, and the first end of the second protection capturing component 1212 is clamped on the first clamping portion 1211a of the second end of the first protection capturing component 1211. Moreover, the first protection capturing component 1211 is fixedly connected with the first end of the first locking fixing member 113, and the second protection capturing component 1212 is fixedly connected with the first end of the second locking fixing member 114. The upper protection capturing structure with the above structure can be more stably locked and fixed on the upper mounting portion of the mounting bracket and the locking fixing member.
[0044] Of course, the second end of the mounting bracket 110 is connected with a ring-shaped fixing structure, and when the unmanned aerial vehicle includes coaxial double rotors, the ring-shaped fixing structure is the lower protection capturing structure 122. That is, in this case, the upper protection capturing structure 121 is connected to the first end of the mounting bracket 110, and the lower protection capturing structure 122 is connected to the second end of the mounting bracket 110.
[0045] More specifically, the upper protection capturing structure 121 is sleeved on the upper mounting portion 111, the lower protection capturing structure 122 is sleeved on the lower mounting portion 112, and the first locking fixing member 113 or the protection capturing structure 120 (specifically, the upper protection capturing structure 121 or the lower protection capturing structure 122) in the mounting bracket 110 is further provided with a temperature sensor 1131.
[0046] In the embodiment, when the upper protection capturing structure 121 is sleeved on the upper mounting portion 111 and the lower protection capturing structure 122 is sleeved on the lower mounting portion 112, in order to achieve more stable fixing, the upper protection capturing structure 121 can be fixedly connected with the first end of the first locking fixing member 113 and also fixedly connected with the first end of the second locking fixing member 114, and at the same time, the lower protection capturing structure 122 can be fixedly connected with the second end of the first locking fixing member 113 and also fixedly connected with the second end of the second locking fixing member 114. Through the temperature sensor 1131 fixedly arranged on the first locking fixing member 113 in the mounting bracket 110, the ambient temperature of the area near the unmanned aerial vehicle rotor motor can be detected to determine whether the unmanned aerial vehicle rotor motor is overheated due to entering liquid drops.
[0047] In some embodiments, as Figures 1-7As shown, the lower protection capturing structure 122 includes a third protection capturing component 1221 and a fourth protection capturing component 1222, the first end of the third protection capturing component 1221 is clamped on the fourth clamping portion 1222a on the second end of the fourth protection capturing component 1222, and the first end of the fourth protection capturing component 1222 is clamped on the third clamping portion (not shown) on the second end of the third protection capturing component 1221; and the two ends of the third protection capturing component 1221 and the two ends of the fourth protection capturing component 1222 are clamped and connected to form a circular ring structure.
[0048] In the embodiment, since the upper protection capturing structure 122 needs to be sleeved on the lower mounting portion 112, two protection capturing components with semicircular cross sections can be spliced to form a complete circular ring structure, specifically, the third protection capturing component 1221 and the fourth protection capturing component 1222 with semicircular cross sections are used to complete the splicing, wherein the first end of the third protection capturing component 1221 is clamped on the fourth clamping portion 1222a on the second end of the fourth protection capturing component 1222, and the first end of the fourth protection capturing component 1222 is clamped on the third clamping portion (not shown) on the second end of the third protection capturing component 1221. Moreover, the third protection capturing component 1221 is connected and fixed with the second end of the first locking and fixing member 113, and the fourth protection capturing component 1222 is connected and fixed with the second end of the second locking and fixing member 114. The lower protection capturing structure with the above structure can be more stably locked and fixed on the lower mounting portion of the mounting bracket and the locking and fixing member.
[0049] The utility model also provides a kind of unmanned plane of spraying operation, such as Figure 7 As shown, the unmanned plane 200 includes a liquid spraying assembly (not shown) and the unmanned plane rotor motor protection device 100 as described in any of the above embodiments.
[0050] In the embodiment, please refer to Figures 1-6 When the above unmanned plane rotor motor protection device 100 is used to protect the air vent of the unmanned plane rotor motor 210, the number of unmanned plane rotor motor protection devices 100 can be determined according to the number of unmanned plane rotor motors 210 arranged on the unmanned plane 200. In this application, the structure of the unmanned plane rotor motor protection device 100 arranged on the air vent of one unmanned plane rotor motor 210 on the unmanned plane 200 is described in detail.
[0051] The mounting bracket 110 of the unmanned aerial vehicle rotor motor protection device 100 is used as a main frame structure of the unmanned aerial vehicle rotor motor protection device, is sleeved on the unmanned aerial vehicle rotor motor protection shell 220, and is used to fix the position relationship between the protection capturing assembly 120 and the unmanned aerial vehicle rotor motor 210. In order to enable the unmanned aerial vehicle arm 230 to pass through the unmanned aerial vehicle rotor motor protection shell 220, a channel needs to be reserved on the unmanned aerial vehicle rotor motor protection shell 220, so that the unmanned aerial vehicle arm 230 passes through. After the unmanned aerial vehicle rotor motor protection device 100 is sleeved on the unmanned aerial vehicle rotor motor protection shell 220 through the mounting bracket 110, in order to realize the protection function, the protection capturing assembly 120 needs to be locked and fixed at both ends of the mounting bracket 110, and the ventilation opening of the unmanned aerial vehicle rotor motor 210 is protected by the protection capturing assembly. In this way, when the unmanned aerial vehicle carries a task load system such as a liquid spraying assembly to perform a spraying operation on a high-altitude vertical surface, the liquid droplets in the airflow entering the ventilation opening of the unmanned aerial vehicle rotor motor 210 can be captured by the protection capturing assembly 120 to prevent the liquid droplets from entering the motor, so that the ventilation opening of the unmanned aerial vehicle rotor motor is protected, and normal operation of the unmanned aerial vehicle rotor motor under the liquid spraying working condition is ensured. Moreover, the protection structure of the protection capturing assembly 120 is located at the position of the ventilation opening of the unmanned aerial vehicle rotor motor, and the normal flow of the gas in the motor can also be ensured.
[0052] In summary, the unmanned aerial vehicle rotor motor protection device and the spraying operation unmanned aerial vehicle provided by the utility model are characterized in that the unmanned aerial vehicle rotor motor protection device comprises a mounting bracket and a protection capturing assembly locked and fixed at the end of the mounting bracket, and the protection capturing assembly comprises a heavy object capturing structure; the mounting bracket is used to be sleeved on the unmanned aerial vehicle rotor motor protection shell, so as to fix the position relationship between the protection capturing assembly and the unmanned aerial vehicle rotor motor. When the unmanned aerial vehicle rotor motor protection device in the embodiment of the application is fixed at the position of the unmanned aerial vehicle rotor motor, the protection capturing assembly separates and captures the fluid in the airflow entering the ventilation opening through the heavy object capturing structure, so as to prevent the fluid from entering the motor, protect the ventilation opening of the unmanned aerial vehicle rotor motor, relieve the overheating of the motor caused by the deposition of foreign matters in the motor, and ensure normal operation of the motor under the liquid spraying working condition.
[0053] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A drone rotor motor protection device, characterized in that, The application discloses a protection device for the air vent of a drone rotor motor, which comprises a mounting bracket and a protection and capture assembly fixed to the end of the mounting bracket, wherein the protection and capture assembly comprises a heavy substance capture structure; the mounting bracket is used for sleeving on the protection shell of the drone rotor motor so as to fix the position relationship between the protection and capture assembly and the drone rotor motor, and the protection and capture assembly separates the liquid drops and / or particles in the fluid entering the air vent through the heavy substance capture structure, thereby protecting the air vent of the drone rotor motor, relieving the overheating caused by the deposition of foreign matters in the fluid motor, and ensuring the normal operation of the motor under the liquid spraying working condition.
2. The drone rotor motor guard of claim 1, wherein, The heavy substance capture structure comprises a plurality of flow channel turning structures which are staggered distributed at the air vent of the drone rotor motor, and the heavy substance capture structure further comprises an upper sealing plate and a lower sealing plate which are connected to the two ends of the flow channel turning structures respectively to form a meshed flow channel which is connected to the air vent of the drone rotor motor and the external environment, and the meshed flow channel is used for guiding the airflow entering the air vent to be diverted and separated to capture the liquid drops and / or particles.
3. The drone rotor motor guard of claim 2, wherein, The air vent is arranged at the end of the motor in a ring shape, the flow channel turning structure comprises at least one sheet, the sheet is arranged at an angle with another sheet which is adjacent in the radial direction and is not connected to each other, so that a plurality of the sheets form a meshed flow channel which is turned and has branches, and the sheet is arranged in the same direction with another sheet which is adjacent in the circumferential direction, so that the meshed flow channel is uniform and regular.
4. The drone rotor motor guard of claim 3, wherein, The inlet of the meshed flow channel is arranged at an angle with the outer circumference of the meshed flow channel, and the angle is between 30° and 60°.
5. The drone rotor motor guard of claim 3, wherein, The inlet width of the meshed flow channel is arranged in proportion to the wall thickness of the flow channel turning structure, and the proportion is greater than 5:
1.
6. The drone rotor motor guard of claim 3, wherein, The cumulative total turning angle of the shortest path of the fluid through the meshed flow channel is between 120° and 450°.
7. The drone rotor motor guard of any one of claims 1-6, wherein, The protection and capture assembly comprises at least an upper protection and capture structure, the upper protection and capture structure comprises a first protection and capture component and a second protection and capture component, the first end of the first protection and capture component is clamped to the second clamping part on the second end of the second protection and capture component, the first end of the second protection and capture component is clamped to the first clamping part on the second end of the first protection and capture component, and the two ends of the first protection and capture component and the two ends of the second protection and capture component are clamped and connected respectively to form a circular ring structure.
8. The drone rotor motor guard of claim 7, wherein, The upper protection and capture structure is connected to the first end of the mounting bracket, the second end of the mounting bracket is connected with a ring-shaped fixing structure, and when the drone is a coaxial double-rotor drone, the ring-shaped fixing structure is a lower protection and capture structure. The protection and capture structure is further provided with a temperature sensor.
9. The drone rotor motor guard of claim 8, wherein, The lower protection capturing structure comprises a third protection capturing component and a fourth protection capturing component, a first end of the third protection capturing component is clamped on a fourth clamping part on a second end of the fourth protection capturing component, a first end of the fourth protection capturing component is clamped on a third clamping part on a second end of the third protection capturing component; and two ends of the third protection capturing component and two ends of the fourth protection capturing component are respectively clamped and connected to form a circular ring structure.
10. A spraying job drone, characterized in that, The unmanned aerial vehicle rotor motor protection device comprises a liquid spraying assembly and the unmanned aerial vehicle rotor motor protection device as claimed in any one of claims 1-9.