Lifting structure, unmanned aerial vehicle platform and vehicle

Abstract

The invention relates to a lifting structure, an unmanned aerial vehicle platform and a vehicle, the lifting structure comprises two groups of cross pieces which are oppositely arranged, each group of cross pieces is arranged on the corresponding side of the lifting platform and used for driving the lifting platform to ascend and descend, and each group of cross pieces comprises at least two connecting rods which are hinged to each other; wherein the sectional area of the hinged part of at least one connecting rod is larger than that of the adjacent connecting rod part, so that the overall bearing capacity and the self strength of the cross piece are improved, and the cross piece can bear a parking apron, an unmanned aerial vehicle and the like which are large in size and weight.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted UAVs, and in particular to a lifting structure, a UAV platform and a vehicle. Background Art

[0002] In recent years, the UAV industry has developed rapidly. As an inevitable product of technological development, vehicle-mounted UAVs have an increasingly wide application market. As a take-off and landing platform for UAVs, UAV platforms can be set on vehicles, ships, and building walls. UAV platforms generally include a lifting structure for platform lifting. The lifting structure is generally composed of two fork arms, which has a simple structure and is conducive to production and manufacturing.

[0003] Since the lifting structure needs to carry the apron and drones, and also needs to lift the drones, the strength and load-bearing capacity of the lifting structure are important indicators for testing whether the quality of the lifting structure is qualified. Although the traditional lifting structure is simple in structure and easy to manufacture, as the size and weight of drones, aprons, etc. gradually increase, the load-bearing and strength requirements for the lifting structure are also gradually increasing. When the traditional lifting structure carries large-sized drones and aprons, there may be a risk that the lifting structure cannot be lifted or even cannot bear the weight and is damaged. Summary of the invention

[0004] The embodiments of the present application provide a lifting structure, a UAV platform and a vehicle, which improve the inherent strength and load-bearing capacity of the lifting structure, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, a lifting structure is provided, the lifting structure comprising two groups of cross members arranged opposite to each other, each group of cross members being arranged on a corresponding side of a lifting platform, and being used to drive the lifting platform to rise and fall;

[0006] Wherein, each group of the cross members comprises at least two connecting rods hinged to each other, wherein the cross-sectional area of ​​the hinged portion of at least one connecting rod is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto.

[0007] Optionally, the cross-sectional area of ​​the hinged portion of the connecting rod is larger than the cross-sectional areas of both ends of the connecting rod.

[0008] Optionally, the sum of the cross-sectional areas of the hinged parts of the two connecting rods in each group of the cross members is greater than the sum of the cross-sectional areas of the ends of the two connecting rods.

[0009] Optionally, the thickness of the end of one connecting rod in each group of cross members is greater than the thickness of the end of another connecting rod; and / or the thickness of the hinged portion of one connecting rod in each group of cross members is greater than the thickness of the hinged portion of another connecting rod.

[0010] Optionally, each group of the cross members includes two connecting rods, the two connecting rods have different thicknesses, and the connecting rod with a smaller thickness among the two connecting rods is located between the other connecting rod and the lifting platform.

[0011] Optionally, the connecting rod further includes a first section and a second section, and the first section is connected to the second section to form a hinged portion for rotationally connecting the two connecting rods.

[0012] Optionally, the connection between the first section and the second section forms a first angle, so that the shape formed by the lines connecting the end point of the first section away from the hinge part, the end point of the second section away from the hinge part, and the point where the hinge part is rotatably connected is a triangle.

[0013] Optionally, the connecting rod further includes a third section, the first section is suitable for being hinged to the base of the UAV platform or the driving mechanism of the UAV platform, and the third section is connected to the second section to form a second angle.

[0014] Optionally, the second angle is greater than 90°.

[0015] Optionally, the surface where the third section connects with the first section is a curved surface, or the surface where the third section connects with the second section is a curved surface.

[0016] Optionally, a guide rod is provided on the connecting rod, which is suitable for guiding the UAV to land and folding the rotor of the UAV.

[0017] Optionally, when the UAV lands on the lifting platform, the height at which the end of the guide rod away from the connecting rod is higher than the height at which the rotor of the UAV is located.

[0018] Optionally, the height difference between the height of the end of the guide rod away from the connecting rod and the height of the rotor of the UAV when it lands on the lifting platform is in the range of 2-3 cm.

[0019] Optionally, a guiding surface is provided at the end of the guide rod away from the connecting rod.

[0020] Optionally, a hinged portion of at least one group of the two groups of cross members is recessed in a direction away from the lifting platform to form an avoidance position.

[0021] Optionally, the lifting structure further includes a reinforcing rod connected between the two groups of cross members.

[0022] Optionally, the reinforcing rod is connected to a connecting rod in the two groups of cross members which is closer to the lifting platform.

[0023] Optionally, the cross-sectional area of ​​a portion where the reinforcing rod is connected to the connecting rod is larger than the cross-sectional area of ​​a portion of the connecting rod adjacent thereto.

[0024] Optionally, a plurality of reinforcing ribs are provided on the surface of the cross member.

[0025] According to a second aspect of the present application, there is provided a drone platform, comprising:

[0026] Base;

[0027] A lifting platform is arranged opposite to the base;

[0028] The lifting structure as described in the first aspect is rotatably connected to the base and the lifting platform; and

[0029] The driving mechanism is driven and connected to the lifting structure to cooperatively drive the lifting platform to rise and fall.

[0030] Optionally, the cross member includes at least two connecting rods, the hinged parts of the two connecting rods are rotatably connected to each other, and the two ends of at least one connecting rod are respectively rotatably connected to one end of the lifting platform along the second direction and the driving mechanism, and the two ends of the other connecting rod are respectively rotatably connected to one end of the base away from the driving mechanism and the other end of the lifting platform along the second direction, so that the two connecting rods can cross and rotate to change the distance between the lifting platform and the base.

[0031] Optionally, the driving mechanism includes a power source and a transmission assembly, the output end of the power source is connected to the transmission assembly to transmit the output power of the power source to the transmission assembly, so that the transmission assembly can translate relative to the base, and the two sides of the transmission assembly are respectively rotatably connected to a connecting rod in the two groups of cross members, so as to drive the two connecting rods in the cross members to perform cross-rotational motion.

[0032] Optionally, a driven component is slidably provided on the lifting platform, and the driven component is located on a side of the lifting platform close to the driving mechanism. One end of one of the connecting rods in each group of the cross members away from the base is rotatably connected to the driven component, so that the driven component can slide on the lifting platform with the movement of the lifting structure.

[0033] Optionally, the driving mechanism further comprises an elastic member, two ends of which are respectively connected to the base and the transmission assembly, and movement of the transmission assembly can change the deformation amount of the elastic member.

[0034] Optionally, the UAV platform has a lifting state and a landing state, and the lifting state has at least one of the following characteristics compared with the landing state:

[0035] The distance between the transmission assembly and the power source is greater;

[0036] The elastic member has a smaller deformation degree;

[0037] The intersection angle formed by the two connecting rods toward the base is smaller.

[0038] According to a third aspect of the present application, a vehicle is also provided, comprising the UAV platform as described in the second aspect.

[0039] In the lifting structure of the embodiment of the present application, by setting the cross-sectional area of ​​the hinged part of the connecting rod to be larger than the cross-sectional area of ​​the adjacent connecting rod part, the overall load-bearing capacity and self-strength of the cross member are improved, and it can carry a helipad, drone, etc. with large size and weight. In detail, the lifting structure is composed of two groups of cross members, which maintains the advantage of the simple structure of the lifting structure, and then the hinged part of the connecting rod in the cross member is strengthened in a targeted manner to improve the load-bearing capacity and self-strength of the cross member in a targeted manner, so as to overcome the problem that the part used for cross rotation is more easily damaged due to excessive load-bearing than other parts.

[0040] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0042] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0043] Figure 1 is a schematic structural diagram of a drone platform carrying a drone and in a lifted state provided in an exemplary embodiment of the present disclosure;

[0044] Figure 2 is a schematic structural diagram of a drone platform carrying a drone and in a landing state provided in an exemplary embodiment of the present disclosure;

[0045] Figure 3 is a structural schematic diagram of a drone platform in a lifting state provided in an exemplary embodiment of the present disclosure;

[0046] Figure 4is a structural schematic diagram of a lifting structure provided in an exemplary embodiment of the present disclosure in a first perspective in a lifting state;

[0047] Figure 5 is a structural schematic diagram of a lifting structure provided in an exemplary embodiment of the present disclosure in a first perspective in a descending state;

[0048] Figure 6 is a structural schematic diagram of a lifting structure provided in an exemplary embodiment of the present disclosure from a second perspective;

[0049] Figure 7 is a structural schematic diagram from a second perspective of a cross member in a lifting structure provided in an exemplary embodiment of the present disclosure;

[0050] Figure 8 is a structural schematic diagram from a second perspective of another cross member in a lifting structure provided in an exemplary embodiment of the present disclosure;

[0051] Fig. 9 is a structural schematic diagram from a first perspective of a connecting rod in a lifting structure provided in an exemplary embodiment of the present disclosure;

[0052] Fig.10 is a structural schematic diagram of another connecting rod in a lifting structure provided in an exemplary embodiment of the present disclosure from a first perspective;

[0053] Fig.11 is a simulation diagram of a lifting structure in a vibration state provided in an exemplary embodiment of the present disclosure;

[0054] Fig.12 is a simulation diagram of a lifting structure provided in an exemplary embodiment of the present disclosure being stationary under different working conditions;

[0055] Fig.13 is a vibration fatigue simulation diagram of a lifting structure provided in an exemplary embodiment of the present disclosure.

[0056] Description of reference numerals:

[0057] 1. Lifting structure; 11. Cross member; 111. Connecting rod; 112. Guide rod; 113. Avoidance position; 114. Reinforcement rib; 115. First section; 116. Second section; 117. Articulated part; 118. Third section; 12. Reinforcement rod;

[0058] 2. Base;

[0059] 3. Lifting platform; 31. Driven component;

[0060] 4. driving mechanism; 41. power source; 42. transmission assembly; 43. elastic member;

[0061] 5. UAV; 51. Rotor;

[0062] α1, first angle; α2, second angle; α3, intersection angle;

[0063] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0065] In the description of the subsequent embodiments, the word "connected" or "connected" should be understood to mean direct connection, indirect connection, or integral molding.

[0066] See also Figures 1 to 3 , an embodiment of the present application provides a drone platform, which can be a drone platform for vehicle-mounted drones, or a drone platform used by drones 5 in other fields, and is not limited here. The drone platform includes a base 2, a lifting platform 3, a lifting structure 1, and a driving mechanism 4. Among them, the lifting platform 3 is arranged relative to the base 2, and the lifting structure 1 is rotated to connect the base 2 and the lifting platform 3, so that the lifting structure 1 can change the distance between the lifting platform 3 and the base 2, that is, drive the lifting platform 3 to rise and fall. Furthermore, the driving mechanism 4 drives the lifting structure 1 to provide power for the movement of the lifting structure 1, so that the lifting structure 1 can cooperatively drive the lifting platform 3 to rise and fall.

[0067] In some embodiments, the lifting structure 1 includes two groups of cross members 11 arranged opposite to each other, and each group of cross members 11 is respectively arranged on a corresponding side of the lifting platform 3, and is used to drive the lifting platform 3 to rise and fall. The corresponding side here refers to that the two groups of cross members 11 are arranged on different sides of the lifting platform 3. For example, the lifting platform 3 is rectangular, and the cross members 11 can be arranged on two of the four sides of the lifting platform 3. In this embodiment, the two groups of cross members 11 are arranged on the opposite sides of the lifting platform 3, so that the cross members 11 are arranged relative to each other, which is conducive to improving the stability of the lifting platform 3 during the lifting process. Among them, each group of cross members 11 includes at least two connecting rods 111 hinged to each other, and the cross-sectional area of ​​the hinged part of at least one connecting rod 111 is larger than the cross-sectional area of ​​the connecting rod part adjacent to it, so that the overall load-bearing capacity and self-strength of the cross member 11 are improved, and it can carry a helipad, drone 5, etc. with larger size and weight.

[0068] It should be noted that there are three situations in which the cross-sectional area of ​​the hinged portion of a connecting rod 111 is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto. The first situation is that the width of the hinged portion of a connecting rod 111 in the height direction is larger than the width of the connecting rod portion adjacent thereto in the height direction, so that the cross-sectional area of ​​the hinged portion is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto. The second situation is that the thickness of the hinged portion of a connecting rod 111 in the thickness direction, i.e., the first direction X, is larger than the thickness of the connecting rod portion adjacent thereto in the thickness direction, so that the cross-sectional area of ​​the hinged portion is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto. The third situation is that the width of the hinged portion of a connecting rod 111 in the height direction is larger than the width of the connecting rod portion adjacent thereto in the height direction, and the thickness of the hinged portion in the thickness direction, i.e., the first direction X, is larger than the thickness of the connecting rod portion adjacent thereto in the thickness direction, so that the cross-sectional area of ​​the hinged portion is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto.

[0069] In some embodiments, see Figure 4 , two groups of cross members 11 are respectively arranged on opposite sides of the lifting platform 3 along the first direction X. The cross member 11 includes at least two connecting rods 111. The hinged parts 117 of the two connecting rods 111 are rotatably connected to each other, and one end of at least one connecting rod 111 is rotatably connected to one end of the lifting platform 3 along the second direction Y, and the other end is rotatably connected to the driving mechanism 4, and one end of the other connecting rod 111 is rotatably connected to one end of the base 2 away from the driving mechanism 4, and the other end is rotatably connected to the other end of the lifting platform 3 along the second direction Y, so that the two connecting rods 111 can cross and rotate to change the distance between the lifting platform 3 and the base 2. By connecting the two ends of the two connecting rods 111 to the obliquely opposite corners respectively, when the angle between the two connecting rods 111 is changed, the distance between one end of the two connecting rods 111 located on the lifting platform 3 and the other end located on the base 2 can be changed, thereby realizing the lifting and lowering of the lifting platform 3. When the driving mechanism 4 drives one end of one of the connecting rods 111 to move, since the connecting rod 111 is rotationally connected to the driving mechanism 4, the connecting rod 111 will rotate, and the other connecting rod 111 will also rotate under the drive of the rotation of the connecting rod 111, so that the predetermined ends of the two connecting rods 111 are close to each other or away from each other. When the predetermined ends of the two connecting rods 111 are close to each other, the lifting platform 3 rises, and when the predetermined ends of the two connecting rods 111 are away from each other, the lifting platform 3 falls.

[0070] For further information, see Figure 1 and Figure 3The driving mechanism 4 includes a power source 41 and a transmission assembly 42. The output end of the power source 41 is connected to the transmission assembly 42 to transmit the output power of the power source 41 to the transmission assembly 42, so that the transmission assembly 42 can move on the base 2, for example, it can slide in a specific embodiment, and the two sides of the transmission assembly 42 are respectively connected to a connecting rod 111 in the two groups of cross members 11 for driving the two connecting rods 111 in the cross member 11 to do cross rotation movement. When the transmission assembly 42 is pushed toward the connecting rod 111, one end of the connecting rod rotatably connected to the transmission assembly 42 will be pushed and move closer to the other end thereof. Based on the rigidity of the connecting rod 111 and the other end of the connecting rod 111 being rotatably connected to the lifting platform 3, the other end of the connecting rod 111 will convert the horizontal translational motion away from the transmission assembly 42 into a translational motion that drives the lifting platform 3 to rise. The overall rise of the lifting platform 3 will drive the connecting rod 111 rotatably connected to the other end thereof to rise in the height direction, and then drive the end of the connecting rod 111 connected to the base 2 to rotate with the hinged part of the connecting rod 111 as the rotation center. Similarly, when the transmission assembly 42 moves in the direction away from the connecting rod 111, it will pull the connecting rod 111 toward the transmission assembly 42, so that the height of the two connecting rods 111 in the vertical direction is reduced, which is converted into the length in the horizontal direction, thereby achieving the purpose of lowering the height of the lifting platform 3.

[0071] Furthermore, a driven assembly 31 is slidably provided on the lifting platform 3, and the driven assembly 31 is located at one end of the lifting platform 3 along the second direction Y. The end of at least one connecting rod 111 in each set of cross members 11 away from the base 2 is rotatably connected to the driven assembly 31, so that the driven assembly 31 can slide on the lifting platform 3 with the cross rotation movement of the connecting rod 111. When the driving mechanism 4 drives the lifting structure 1 to move, the part of the lifting structure 1 connected to the driven assembly 31 will drive the driven assembly 31 to slide on the lifting platform 3 to adapt to the position change of the end of the connecting rod 111 in the lifting structure 1, thereby realizing the lifting and lowering of the lifting platform 3.

[0072] In some embodiments, see Figure 3, the driving mechanism 4 also includes an elastic member 43, the two ends of which are connected to the base 2 and the transmission assembly 42 respectively, and the sliding of the transmission assembly 42 can change the deformation of the elastic member 43. By setting the elastic member 43, it is beneficial to improve the transmission assembly 42 to push the cross member 11 to move, so as to increase the weight that the cross member 11 can lift. Exemplarily, during the landing process of the lifting platform 3, the power source 41 drives the transmission assembly 42 to move in the direction of the power source 41, and the elastic member 43 is deformed by the pulling force of the transmission assembly 42, and the two connecting rods 111 of the cross member 11 are gradually closed to reduce the height of the lifting platform 3, because during the landing process, there is no need to overcome the gravity of the lifting platform 3 and / or the drone 5, that is, compared with lifting the lifting platform 3 and / or the drone 5, the required power is lower, and gravity will further assist the landing of the lifting platform 3, etc. In order to avoid the landing speed being too fast and causing damage to the drone 5, the lifting platform 3, etc., the deformation of the elastic member 43 can slow down the landing speed and improve the landing stability of the lifting platform 3. When the lifting platform 3 is in the lifting state, the power source 41 drives the transmission component 42 to move in the direction away from the power source 41. At this time, the elastic member 43 will further drive the transmission component 42 to move in the direction away from the power source 41 due to the elastic force of restoring the deformation, thereby increasing the power and adapting to the various components that need to be overcome in the lifting state, such as the gravity of the lifting platform 3, the drone 5, etc., thereby playing a role in assisting the lifting structure 1 to lift the lifting platform 3.

[0073] In some embodiments, the drone platform has a lifting state and a landing state, and the lifting state has at least one of the following characteristics compared to the landing state:

[0074] The distance between the transmission assembly 42 and the power source 41 is greater;

[0075] The elastic member 43 has a smaller deformation degree;

[0076] The crossing angle α3 formed by the two connecting rods 111 toward the base 2 is smaller.

[0077] Exemplarily, during the process of switching the UAV platform from a lifting state to a landing state, the power source 41 drives the transmission assembly 42 to slide toward the power source 41, and the elastic member 43 is stretched and deformed as the transmission assembly 42 slides. The angle of the crossing angle α3 formed by the two connecting rods 111 toward the base 2 gradually increases with the sliding of the transmission assembly 42 to reduce the distance between the base 2 and the lifting platform 3.

[0078] During the process of switching the UAV platform from the landing state to the lifting state, the power source 41 drives the transmission assembly 42 to slide in the direction away from the power source 41, and the elastic member 43 deforms in the direction away from the driving source. The angle of the intersection angle α3 formed by the two connecting rods 111 toward the base 2 gradually decreases with the sliding of the transmission assembly 42 to increase the distance between the base 2 and the lifting platform 3.

[0079] In some embodiments, see Figure 4 and Figure 5 Each group of cross members 11 includes at least two connecting rods 111, and the middle parts of at least two connecting rods 111 are hinged to each other to form a hinged part, so that the two connecting rods 111 can cross and rotate. When one end of the two connecting rods 111 is subjected to thrust, the two connecting rods 111 will respectively drive the other end of each to rotate around the hinged part 117, thereby changing the distance between the two ends of one connecting rod 111 and the other connecting rod 111, realizing the switching of the length of the cross member 11 in the horizontal direction and the height direction, thereby realizing the lifting function of the cross member 11. The lifting structure 1 only needs to use four connecting rods 111, of which two connecting rods 111 form a cross member 11 to realize the lifting of the lifting platform 3, and has a simple structure and good movement synchronization.

[0080] In other embodiments, each group of cross members 11 may be composed of three connecting rods 111, wherein two connecting rods 111 are fixedly connected to form a connecting rod group, thereby improving the strength of the connecting rod group. The hinged portion of the connecting rod group and the hinged portion of another connecting rod 111 are rotatably connected to each other, so that the connecting rod 111 and the connecting rod group can cross-rotate, which can not only improve the overall strength and load-bearing capacity of the cross member 11, but also achieve the purpose of the cross member 11 driving the lifting platform 3 to rise and fall.

[0081] In some embodiments, the cross-sectional area of ​​the hinged portion of the connecting rod 111 is larger than the cross-sectional area of ​​the two ends of the connecting rod 111, so as to specifically strengthen the strength of the connecting rod 111 at the hinged portion, which can not only improve the load-bearing capacity of the connecting rod 111, but also minimize the increase in the mass of the connecting rod 111.

[0082] In some embodiments, the sum of the thicknesses of the hinged parts 117 of the two connecting rods 111 in each group of cross members 11 is greater than the sum of the thicknesses of the ends of the two connecting rods 111. Since the hinged parts 117 of the two connecting rods 111 are rotatably connected to each other and are used to support the ends of the connecting rods 111 to make rotational movements around the hinged parts 117, the forces on the hinged parts 117 of the connecting rods 111 are more complex, the strength is lower, and it is more likely to be damaged due to overloading. Therefore, in this embodiment, the thickness of the hinged parts 117 of the two connecting rods 111 is thickened, which is conducive to improving the load-bearing capacity of the hinged parts 117 of the two connecting rods 111, and then improving the load-bearing capacity and strength of the cross member 11 as a whole.

[0083] In some embodiments, the thickness of the end of one connecting rod 111 in each group of cross members 11 is greater than the thickness of the end of another connecting rod 111, so that when the two connecting rods 111 are combined to form a cross member 11, the overall strength of the cross member 11 can be improved. And which of the two connecting rods 111 has the thicker end thickness can be selected according to actual conditions.

[0084] Furthermore, the thickness of the hinged portion 117 of one connecting rod 111 in each group of cross members 11 is greater than the thickness of the hinged portion 117 of the other connecting rod 111, further improving the overall strength of the cross member 11. As for the thickness relationship between the two connecting rods 111, the thickness of the end portion and the thickness of the hinged portion 117 of one connecting rod 111 may be respectively greater than the thickness of the end portion and the thickness of the hinged portion 117 of the other connecting rod 111. Alternatively, the thickness of the end portion of one connecting rod 111 may be greater than the thickness of the end portion of the other connecting rod 111, and the thickness of the hinged portion 117 may be less than the thickness of the hinged portion 117 of the other connecting rod 111.

[0085] In some embodiments, the thickness of the hinge portion 117 of one connecting rod 111 in each group of cross members 11 is greater than the thickness of the hinge portion 117 of another connecting rod 111, which is beneficial to improving the strength of the connecting rod 111 alone, and can also improve the overall strength of the cross member 11. In addition, because the thickened portion is the hinge portion 117 where the two connecting rods 111 are rotatably connected, the strength of the rotating connection portion that is subjected to more complex forces and has lower strength is specifically improved, which is beneficial to saving material costs.

[0086] In some embodiments, the two connecting rods 111 have different thicknesses, and the connecting rod 111 with a smaller thickness is located between the other connecting rod 111 and the lifting platform 3, which is conducive to protecting the connecting rod 111 with a smaller thickness and preventing the connecting rod 111 with a smaller thickness from being damaged due to being exposed to the outside. In addition, reducing the thickness of the inner connecting rod 111 is conducive to reducing the overall mass of the lifting structure 1, meeting the lightweight requirements.

[0087] In some embodiments, see Figure 6 The lifting structure 1 also includes a reinforcing rod 12 , which is connected between the two groups of cross members 11 to further improve the strength of the lifting structure 1 .

[0088] Furthermore, the reinforcing rod 12 is connected to a connecting rod 111 of the two sets of cross members 11 that is closer to the lifting platform 3. In addition, a connecting rod 111 with a smaller thickness, that is, a lower strength, is arranged between the lifting platform 3 and the other connecting rod 111, so that both ends of the reinforcing rod 12 are respectively connected to the connecting rod 111 with a smaller thickness of the two sets of cross members 11, which is conducive to compensating for the insufficient strength of the connecting rod 111 with a smaller thickness.

[0089] Furthermore, the cross-sectional area of ​​the portion where the reinforcing rod 12 is connected to the connecting rod 111 is larger than the cross-sectional area of ​​the portion of the connecting rod adjacent thereto, which is beneficial for specifically enhancing the strength and load-bearing capacity of the lifting structure 1 .

[0090] In some embodiments, see Fig. 9 and Fig.10 The connecting rod 111 includes a first section 115 and a second section 116. The first section 115 and the second section 116 are connected to form a hinged portion 117 for rotationally connecting the two connecting rods 111. The connection between the first section 115 and the second section 116 is an integrally formed connection, which improves the overall strength of the connecting rod 111.

[0091] Furthermore, a first angle α1 is formed at the connection between the first section 115 and the second section 116, so that the shape formed by the lines connecting one end point of the first section 115 away from the hinge part 117, one end point of the second section 116 away from the hinge part 117, and the points where the hinge part 117 is rotatably connected to each other is a triangle, which is beneficial to improving the overall strength of the connecting rod 111.

[0092] In some embodiments, see Fig. 9 and Fig.10, the connecting rod 111 also includes a third section 118, the first section 115 is suitable for being hinged with the base 2 of the drone platform or the driving mechanism 4 of the drone platform, and the third section 118 is connected to the second section 116 and forms a second angle α2. The third section 118 and the second section 116 are connected at an angle, so that when the third section 118 is connected to the lifting platform 3, the second section 116 can form an angle with the third section 118 to avoid the second section 116 from interfering with certain components on the lifting platform 3, such as the apron, the drone 5, etc. In contrast, if the third section 118 is not provided, and the second section 116 is directly connected to the lifting platform 3, during the lifting process, a part of the second section 116 close to the lifting platform 3 may be located above the lifting platform 3. If the load on the lifting platform 3 exceeds the edge of the lifting platform 3 at this time, the second section 116 may interfere with the part of the load, and even cause damage to the lifting structure 1 and the load during lifting.

[0093] Furthermore, the second angle α2 is greater than 90°, so that the angle between the second section 116 and the third section 118 is an obtuse angle, thereby expanding the avoidance space between the second section 116 and the third section 118, and further avoiding interference between the second section 116 or the third section 118 and the load on the lifting platform 3.

[0094] Furthermore, the surface where the third section 118 and the second section 116 are connected is a curved surface, which is beneficial to improving the connection strength and smoothness between the third section 118 and the second section 116, and can also slightly improve the avoidance space compared to the sharp-angle turning between the second section 116 and the third section 118.

[0095] In some embodiments, in a group of cross members 11, the third section 118 in one connecting rod 111 is connected to the second section 116, and the third section 118 in another connecting rod 111 is connected to the second section 116, and then the two connecting rods 111 are mirror-set, so that the third sections 118 in the two connecting rods 111 can be respectively located at two corners of the lifting platform 3, thereby improving the stability and balance of the lifting platform 3 during the lifting process.

[0096] In some embodiments, a guide rod 112 is provided on the connecting rod 111 to guide the drone 5 to land and fold the rotor 51 of the drone 5. When the drone 5 is landing on the lifting platform 3, the drone 5 can determine the position where it needs to land according to the position of the guide rod 112, and the edge of the rotor 51 of the drone 5 can contact the guide rod 112, thereby guiding the drone 5 to land on the lifting platform 3. When the lifting platform 3 switches from the lifting state to the landing state, the guide rod 112 moves toward the lifting platform 3, gradually exceeds the height of the lifting platform 3, and the guide rod 112 is inserted between two of the multiple rotors 51 of the drone 5. After the power of the rotation of the rotor 51 of the drone 5 is turned off, the multiple rotors 51 will continue to rotate under the action of inertia, and then touch the guide rod 112, stop rotating and fold. It should be noted that for the disc-shaped diagram of the rotor 51 of the drone 5 in the figure, the rotor 51 is actually not disc-shaped, but strip-shaped, and the disc diagram is a diagram of the rotor 51 rotating.

[0097] Furthermore, in a set of cross members 11, guide rods 112 are arranged on the first sections 115 of the two connecting rods 111, and the two connecting rods 111 are arranged in a mirror image. The two guide rods 112 in a set of cross members 11 can be arranged close to two corners of the lifting platform 3, respectively, so that one guide rod 112 corresponds to a flight arm in the drone 5, and each flight arm is provided with a plurality of rotors 51, so that the plurality of rotors 51 on each flight arm are assisted by the corresponding guide rods 112 to be folded.

[0098] In some embodiments, when the UAV 5 lands on the lifting platform 3, the height at which the end of the guide rod 112 away from the connecting rod 111 is higher than the height at which the rotor 51 of the UAV 5 is located, so as to ensure that the guide rod 112 of the UAV 5 can play a role in guiding and retracting the rotor 51.

[0099] Further, the height difference between the height of the end of the guide rod 112 away from the connecting rod 111 and the height of the rotor 51 when the UAV 5 lands on the lifting platform 3 is in the range of 2-3 cm. In this embodiment, the height difference between the height of the end of the guide rod 112 away from the connecting rod 111 and the height of the rotor 51 when the UAV 5 lands on the lifting platform 3 is 2 cm, so as to ensure that the guide rod 112 of the UAV 5 can play the role of guiding and retracting the rotor 51.

[0100] Furthermore, a guide surface is provided at the end of the guide rod 112 away from the connecting rod 111. When the rotor 51 of the UAV 5 contacts the guide rod 112, the UAV 5 can accurately land on the lifting platform 3 under the guidance of the guide rod 112. The guide surface is a smooth arc shape. For example, a mushroom-shaped end cap is provided at the end of the guide rod 112, and the guide surface is the surface of the end cap, which is conducive to reducing friction damage and collision damage between the guide rod 112 and the rotor 51.

[0101] In some embodiments, see Figure 7 and Figure 8 , Figure 7 is a structural schematic diagram from a second perspective of a cross member in a lifting structure provided in an exemplary embodiment of the present disclosure; Figure 8 1 is a schematic structural diagram of another cross member in a lifting structure provided in an exemplary embodiment of the present disclosure from a second perspective. It should be noted that the second perspective refers to a perspective perpendicular to the thickness direction of the connecting rod 111, and Figure 7 and Figure 8 The shaft for connecting the two connecting rods 111 is omitted. The hinged portion 117 of at least one of the two groups of cross members 11 is recessed in the direction away from the lifting platform 3 to form an avoidance position 113 for avoiding other loads on the lifting platform 3 to avoid interference between the cross members 11 and the loads. In one example, the hinged portion 117 of one of the two groups of cross members 11 is recessed in the direction away from the lifting platform 3, and the hinged portions 117 of the two connecting rods 111 in the cross member 11 can both be recessed in the direction away from the lifting platform 3, or the hinged portion 117 of the connecting rod 111 close to the lifting platform 3 can be recessed in the direction away from the lifting platform 3. In another example, the hinged parts 117 of the two groups of cross members 11 are both recessed in the direction away from the lifting platform 3, and the hinged parts 117 of the two connecting rods 111 in the cross member 11 can be recessed in the direction away from the lifting platform 3, or the hinged part 117 of the connecting rod 111 close to the lifting platform 3 can be recessed in the direction away from the lifting platform 3. In this embodiment, the hinged parts 117 of a group of cross members 11 are recessed in the direction away from the lifting platform 3 to form the avoidance position 113, and the two connecting rods 111 in the cross member 11 are recessed in the direction away from the lifting platform 3.

[0102] In some embodiments, a plurality of reinforcing ribs 114 are disposed on the surface of the cross member 11 to improve the overall strength and load-bearing capacity of the cross member 11 .

[0103] This application has carried out simulation experiments on the lifting structure, see Figures 11 to 13 , the results are as follows:

[0104] First, a vibration simulation is performed on a specific model of lifting structure. Under the vibration simulation conditions, the maximum stress in the X direction of the lifting structure is 122.11MPa, the maximum stress in the Y direction is 5.28MPa, and the maximum stress in the Z direction is 66.74MPa. The X direction is the thickness direction of the lifting structure, the Y direction is the length direction of the lifting structure, and the Z direction is the width direction of the lifting structure. It can be seen that the maximum stress in the thickness direction of the lifting structure under vibration is much greater than the maximum stress in the Y and Z directions. Therefore, the improvement of the lifting structure in the thickness direction can specifically improve the strength and load-bearing capacity of the lifting structure.

[0105] Then, a static state simulation was performed on a specific model of the lifting structure mentioned above. Three connection conditions of the two connecting rods in the lifting structure were simulated in the static state. The three connection conditions can be the conditions in which the lifting structure is in when the UAV platform is in the lifting state, the landing state, and the transition state between the lifting state and the landing state. The maximum stresses of the three connection conditions are 43.44MPa, 55.63MPa, and 29.72MPa, respectively. It can be seen that the maximum stresses of the simulation of the lifting structure in the static state are similar, and are all within a reasonable range, meeting the strength requirements.

[0106] Finally, a vibration fatigue analysis was performed on a specific model of the lifting structure mentioned above. The maximum damage of the lifting structure was 8.470E-04=0.000847. Compared with the traditional lifting structure, the maximum damage limit of the lifting structure of the present application is improved, so that the lifting structure is less prone to fatigue damage.

[0107] The embodiment of the present application provides a vehicle, including the drone platform as described in any of the above embodiments, and the drone platform is a vehicle-mounted drone platform. Because the vehicle includes the drone platform in the above embodiments, it also has the structure and beneficial effects related to the drone platform, which will not be repeated here.

[0108] It is understandable that the vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and the present disclosure does not make any specific limitation on this.

[0109] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0110] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0112] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A lifting structure, characterized in that: It comprises two groups of cross members (11) arranged opposite to each other, each group of cross members (11) is arranged on a corresponding side of the lifting platform (3) and is used to drive the lifting platform (3) to move up and down; Each group of the cross members (11) comprises at least two connecting rods (111) hinged to each other, wherein the cross-sectional area of ​​the hinged portion of at least one connecting rod (111) is larger than the cross-sectional area of ​​the connecting rod portion adjacent thereto.

2. The lifting structure according to claim 1, characterized in that: The cross-sectional area of ​​the hinged portion of the connecting rod (111) is larger than the cross-sectional areas of both ends of the connecting rod (111).

3. The lifting structure according to claim 1, characterized in that: The sum of the cross-sectional areas of the hinged parts of the two connecting rods (111) in each group of the cross members (11) is greater than the sum of the cross-sectional areas of the ends of the two connecting rods (111).

4. The lifting structure according to claim 1, characterized in that: The thickness of the end of one of the connecting rods (111) in each group of the cross members (11) is greater than the thickness of the end of another of the connecting rods (111); and / or the thickness of the hinged portion (117) of one of the connecting rods (111) in each group of the cross members (11) is greater than the thickness of the hinged portion (117) of another of the connecting rods (111).

5. The lifting structure according to claim 1, characterized in that: Each group of the cross members (11) comprises two connecting rods (111), the two connecting rods (111) have different thicknesses, and the connecting rod (111) with the smaller thickness among the two connecting rods (111) is located between the other connecting rod (111) and the lifting platform (3).

6. The lifting structure according to claim 1, characterized in that: The connecting rod (111) further comprises a first section (115) and a second section (116), wherein the first section (115) is connected to the second section (116) to form a hinged portion (117) for rotational connection of the connecting rod (111).

7. The lifting structure according to claim 6, characterized in that: The connection between the first section (115) and the second section (116) forms a first angle (α1), so that the shape formed by the lines connecting the end point of the first section (115) away from the hinged part (117), the end point of the second section (116) away from the hinged part (117), and the point where the hinged part (117) is rotatably connected to each other is a triangle.

8. The lifting structure according to claim 6, characterized in that: The connecting rod (111) also includes a third section (118), the first section (115) is suitable for being hinged to the base (2) of the drone platform or the driving mechanism (4) of the drone platform, and the third section (118) is connected to the second section (116) to form a second angle (α2).

9. The lifting structure according to claim 8, characterized in that: The second angle (α2) is greater than 90°.

10. The lifting structure according to claim 8, characterized in that: The surface where the third section (118) is connected to the first section (115) is a curved surface, or the surface where the third section (118) is connected to the second section (116) is a curved surface.

11. The lifting structure according to claim 6, characterized in that: The connecting rod (111) is provided with a guide rod (112) suitable for guiding the drone to land and folding the rotor of the drone.

12. The lifting structure according to claim 11, characterized in that: When the UAV lands on the lifting platform (3), the height at which the end of the guide rod (112) away from the connecting rod (111) is located is higher than the height at which the rotor of the UAV is located.

13. The lifting structure according to claim 12, characterized in that: The height difference between the height of the end of the guide rod (112) away from the connecting rod (111) and the height of the rotor of the UAV when it lands on the lifting platform (3) is in the range of 2-3 cm.

14. The lifting structure according to claim 11, characterized in that: The end of the guide rod (112) away from the connecting rod (111) is provided with a guide surface.

15. The lifting structure according to any one of claims 1 to 14, characterized in that: The hinged portion (117) of at least one of the two groups of cross members (11) is recessed in a direction away from the lifting platform (3) to form an avoidance position (113).

16. The lifting structure according to any one of claims 1 to 14, characterized in that: The lifting structure (1) further comprises a reinforcing rod (12), wherein the reinforcing rod (12) is connected between the two groups of cross members (11).

17. The lifting structure according to claim 16, characterized in that: The reinforcing rod (12) is connected to a connecting rod (111) closer to the lifting platform (3) in the two groups of cross members (11).

18. The lifting structure according to claim 16, characterized in that: The cross-sectional area of ​​the portion where the reinforcing rod (12) is connected to the connecting rod (111) is larger than the cross-sectional area of ​​the portion of the connecting rod adjacent thereto.

19. The lifting structure according to any one of claims 1 to 14, characterized in that: A plurality of reinforcing ribs (114) are provided on the surface of the cross member (11).

20. An unmanned aerial vehicle platform, characterized in that: include: Base (2); A lifting platform (3) is arranged opposite to the base (2); The lifting structure according to any one of claims 1 to 19, rotatably connecting the base (2) and the lifting platform (3); and A driving mechanism (4) is driven and connected to the lifting structure (1) to cooperatively drive the lifting platform (3) to rise and fall.

21. The UAV platform according to claim 20, characterized in that: Two groups of cross members (11) are respectively arranged on opposite sides of the lifting platform (3) along the first direction (X); the cross member (11) comprises at least two connecting rods (111), the hinged parts (117) of the connecting rods (111) are rotatably connected to each other, and the two ends of at least one connecting rod (111) are respectively rotatably connected to one end of the lifting platform (3) along the second direction (Y) and the driving mechanism (4), and the two ends of at least one connecting rod (111) are respectively rotatably connected to one end of the base (2) away from the driving mechanism (4) and the other end of the lifting platform (3) along the second direction (Y), so that the connecting rods (111) can cross and rotate to change the distance between the lifting platform (3) and the base (2).

22. The UAV platform according to claim 21, characterized in that: The driving mechanism (4) comprises a power source (41) and a transmission assembly (42); the output end of the power source (41) is connected to the transmission assembly (42) so as to transmit the output power of the power source (41) to the transmission assembly (42), so that the transmission assembly (42) can translate relative to the base (2); the two sides of the transmission assembly (42) are respectively rotatably connected to a connecting rod (111) in the two groups of cross members (11), so as to drive the connecting rod (111) in the cross member (11) to perform cross rotational motion.

23. The UAV platform according to claim 21, characterized in that: A driven component (31) is slidably provided on the lifting platform (3), and the driven component (31) is located at one end of the lifting platform (3) along the second direction (Y). At least one connecting rod (111) in each group of the cross members (11) is rotatably connected to the driven component (31) at one end away from the base (2), so that the driven component (31) can slide on the lifting platform (3) along the cross rotation movement of the connecting rod (111).

24. The UAV platform according to claim 22, characterized in that: The driving mechanism (4) further comprises an elastic member (43), two ends of which are respectively connected to the base (2) and the transmission assembly (42), and the movement of the transmission assembly (42) can change the deformation amount of the elastic member (43).

25. The UAV platform according to claim 24, characterized in that: The UAV platform has a lifting state and a landing state. Compared with the landing state, the lifting state has at least one of the following characteristics: The distance between the transmission assembly (42) and the power source (41) is greater; The elastic member (43) has a smaller deformation degree; The crossing angle (α3) formed by the two connecting rods (111) in the direction toward the base (2) is smaller.

26. A vehicle, characterized in that: Comprising a drone platform as described in any one of claims 20 to 25.

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