Lifting mechanism for supporting ducted unmanned aerial vehicle and fire fighting truck

Abstract

The utility model relates to the technical field of fire-fighting unmanned aerial vehicles, and provides a lifting mechanism for supporting a ducted unmanned aerial vehicle and a fire fighting truck. The supporting platform is used for supporting the ducted unmanned aerial vehicle, a plurality of through holes are formed in the supporting platform, and the through holes are used for guiding airflow generated by the ducted unmanned aerial vehicle; the supporting frame is arranged between the supporting platform and the supporting base, one side of the end, connected with the supporting platform, of the supporting frame is rotationally connected with the supporting platform, and the other side is slidably connected with the supporting platform; one side of the end, connected with the supporting base, of the supporting frame is rotationally connected with the supporting base, and the other side is slidably connected; the supporting frame slides at the sliding joint of the supporting base and the supporting platform to drive the supporting platform to ascend or descend. According to the technical scheme, the method can be matched with the ducted unmanned aerial vehicle, the problem that turbulent flow occurs when the ducted unmanned aerial vehicle is started or landed is solved, and the ducted unmanned aerial vehicle can be stably started and landed.

Description

Technical Field

[0001] The present application relates to the technical field of fire-fighting drones, and more specifically, to a lifting mechanism and a fire truck for supporting a ducted drone. Background Art

[0002] There are some multi-rotor firefighting drones on the market, but their payload capacity is small and they can only carry a few fire-fighting bombs. They have a certain ability to extinguish fires in the early stages of buildings, but for fires in super-high-rise buildings, it is difficult for fire trucks / firefighting drones to arrive at the fire station to carry out firefighting work in the early stages of the fire. When the fire is large, their actual firefighting significance is not great.

[0003] Therefore, the use of ducted UAVs can improve the load capacity and achieve the purpose of high-altitude firefighting. However, due to the differences in the structure of ducted UAVs and rotary-wing UAVs, the lifting mechanism used in the existing technology to support rotary-wing UAVs cannot be directly used to support ducted UAVs. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a lifting mechanism and a fire truck for supporting ducted drones, which can be adapted to the ducted drones, avoid turbulence problems when the ducted drones start or land, enable the ducted drones to start and land smoothly, improve safety, and also provide support and lifting for the ducted drones.

[0005] To solve the above technical problems, this application adopts the following technical solutions:

[0006] In the first aspect, the present application provides a lifting mechanism for supporting a ducted UAV, comprising: a supporting base; a supporting platform for supporting the ducted UAV, wherein the supporting platform is provided with a plurality of through holes, and the through holes are used to guide the airflow generated by the ducted UAV; a supporting frame, arranged between the supporting platform and the supporting base, wherein one side of one end of the supporting frame connected to the supporting platform is rotatably connected to the supporting platform, and the other side is slidably connected; one side of one end of the supporting frame connected to the supporting base is rotatably connected to the supporting base, and the other side is slidably connected; the supporting frame drives the supporting platform to rise or fall by sliding at the sliding connection between the supporting base and the supporting platform.

[0007] During the implementation of the above scheme, the support base plays a supporting role for the entire lifting mechanism. The upper end of the support frame is connected to the support platform, and the lower end is connected to the support base. One side of the end of the support frame connected to the support platform is rotatably connected to the support platform, and the other side is slidably connected. One side of the end of the support frame connected to the support base is rotatably connected to the support base, and the other side is slidably connected. The support frame can rise or fall by sliding at the sliding connection between the support base and the support platform, that is, when the support frame slides relative to the support base, thereby changing the height position of the support platform. The support platform is used to support the ducted UAV and realizes the lifting function of the ducted UAV. There are multiple through holes on the support platform. Since the ducted UAV will generate vertical airflow when starting or landing, by setting multiple through holes, the airflow passes through the through holes, avoiding the airflow blowing onto the support platform and generating convection with the ducted UAV, improving the stability of the starting and landing of the ducted UAV, and also improving safety.

[0008] As an embodiment, the support frame includes a plurality of support assemblies, each of the support assemblies includes a first support member and a second support member, the first support member and the second support member are cross-arranged and rotatably connected at the cross position, wherein one end of the first support member is rotatably connected to the support base, and the other end is slidably connected to the support platform; one end of the second support member is slidably connected to the support base, and the other end is slidably connected to the support platform.

[0009] In the implementation of the above scheme, the support frame includes multiple support components, each support component includes a first support member and a second support member, the first support member and the second support member are cross-arranged, and the cross position is rotatably connected, one end of the first support member is rotatably connected to the support base, and the other end is slidably connected to the support platform; one end of the second support member is slidably connected to the support base, and the other end is rotatably connected to the support platform, so that the position where the first support member and the second support member are connected provides support for the first support member and the second support member, and the first support member and the second support member can slide relative to the support platform and the support base respectively. During the sliding process, the corresponding height of the support platform is also adjusted, and the height of the support platform will also change, thereby achieving the purpose of supporting the ducted UAV and rising or falling.

[0010] As an embodiment, the first support member includes two first support arms, the second support member includes two second support arms, and the two first support arms are located between the two second support arms; the support base is provided with a plurality of through areas, and the number of the through areas corresponds to the number of the support components; the length of the through area is greater than the length of the first support arm and the second support arm.

[0011] In the implementation process of the above-mentioned scheme, the first support member includes two first support arms, and the second support member includes two second support arms. The two first support arms are located between the two second support arms, thereby realizing the cross-connection between the first support member and the second support member, and also avoiding the first support member and the second support member from interfering with each other during the sliding process; the support base is provided with multiple through areas, and the number of through areas corresponds to the number of support components; the length of the through area is greater than the length of the first support arm and the second support arm, so that when the lifting mechanism is in the descending state, the first support member and the second support member can be in the through area, avoiding the interference of the support base on the first support member and the second support member, and also avoiding the first support member and the second support member protruding from the support base, so that the height occupied by the lifting mechanism in the descending state is the thickness of the support base, thereby reducing the space occupied by the lifting mechanism in the descending state, further improving the space utilization rate, and avoiding affecting the layout of other modules.

[0012] As an embodiment, the support base includes a plurality of connecting beams, which are arranged parallel to each other and extend along the length direction of the support base, and opposite sides of two adjacent connecting beams are respectively provided with first grooves with openings facing each other; a roller is provided at one end of the second support arm, and the roller can slide along the first groove.

[0013] In the implementation of the above-mentioned scheme, the support base includes a plurality of connecting beams, which are arranged parallel to each other and extend along the length direction of the support base. Two adjacent connecting beams are respectively provided with first grooves with openings facing each other. A roller is provided at one end of the second support arm, and the roller can slide along the first groove, so that the second support member can slide relative to the support base, and the height of the support platform is also adjusted at the same time.

[0014] As an embodiment, the support platform is provided with a support beam, the support beam is arranged toward the support base, the support beam extends along the length direction of the support platform, the support beam is provided with a second groove toward the side frame direction of the support platform, and the side frames of the two length directions of the support platform are also provided with a second groove toward the support beam direction; the roller is provided at one end of the first support arm, and the roller can slide along the second groove.

[0015] In the implementation of the above scheme, the support platform is provided with a support beam, which is arranged toward the support base and extends along the length direction of the support platform. The support beam is provided with a second groove in the direction of the frame of the support platform, and the two frames in the length direction of the support platform are also provided with a second groove in the direction of the support beam. A roller is provided at one end of the first support arm, and the roller can slide along the second groove, so that the first support member can slide relative to the support platform, and the height of the support platform is also adjusted. As an embodiment, a driving member is provided between the adjacent first support arm and the second support arm, one end of the driving member is connected to the first support member, and the other end is connected to the second support member, and the connection position is higher than the position where the first support member and the second support member are rotatably connected. The driving member has a telescopic stroke, which is used to drive the first support member and the second support member to slide relative to the support platform and the support base respectively.

[0016] In the implementation process of the above solution, a driving member is provided between the adjacent first support arm and the second support arm, one end of the driving member is connected to the first support member, and the other end is connected to the second support member, and the connection position is higher than the position where the first support member and the second support member are rotatably connected; the driving member has a telescopic stroke, which is used to drive the first support member and the second support member to slide relative to the support platform and the support base respectively. When the driving member is extended, the extended end exerts force on the second support member. At this time, using the lever principle, the sliding end of the second support member will slide relative to the support base, and the sliding direction is to slide toward the first support member. At the same time, due to the rotational connection between the first support member and the second support member, the first support member is synchronously pushed to slide, the first support member slides toward the second support member and the second support member slides toward the first support member, and the lifting mechanism is in an ascending state; when the driving member is retracted, it can push the first support member to slide away from the second support member and push the second support member to slide away from the first support member, and the lifting mechanism is in a descending state, thereby realizing the ascending or descending state of the lifting mechanism; in addition, the driving member is arranged in the gap between the adjacent first support arm and the second support arm, reducing the occupied volume and improving space utilization.

[0017] As an embodiment, the two driving members connected to the same first support member are coaxially arranged.

[0018] In the implementation of the above-mentioned scheme, one end of the two driving members connected to the same first support member is coaxially arranged, so that the two driving members can synchronously drive the first support member and the second support member to slide relative to the support platform and the support base respectively. At the same time, it also improves the smoothness of the first support member and the second support member during the sliding process, avoiding the first support member and the second support member from getting stuck.

[0019] As an embodiment, a limiting member is further provided between the adjacent first support arms and the second support arms, and the limiting member can abut against the driving member to limit the sliding position of the first support member and the second support member.

[0020] During the implementation of the above-mentioned scheme, a limit member is further provided between the adjacent first support arm and the second support arm. The limit member is coaxially connected to one end of the driving member, and when the driving member is gradually extended, the second support member slides toward the first support member, and one end of the first support member slides toward the second support member, but the first support member and the second support member must have a certain intersection angle to ensure the stability of the entire lifting mechanism. Therefore, when the first support member and the second support member slide to a certain position respectively, the driving member can abut against the limit member, and the limit member limits the driving member from continuing to extend, thereby limiting the sliding position of the first support member and the second support member, thereby meeting the stability of the lifting mechanism.

[0021] As an embodiment, a plurality of fixing members are provided on both sides of the support base, and the fixing members are used to be connected to the box body of the fire truck.

[0022] In the implementation of the above solution, a plurality of fixing members are provided on both sides of the support base, and the fixing members are used to connect with the box body of the fire truck, thereby improving the stability between the lifting mechanism and the box body.

[0023] In a second aspect, the present application provides a fire truck, comprising a box body, the box body comprising a frame body, and further comprising the lifting mechanism for supporting a ducted drone as described in the first aspect, wherein a support base is connected to the frame body;

[0024] The box body further comprises a top cover, and a plurality of holes are provided on the top cover.

[0025] In the process of implementing the above-mentioned scheme, the fire truck includes a box body, the box body includes a frame body, and the lifting mechanism for supporting the ducted drone provided by the first aspect is installed on the frame body, and the support base is fixedly connected to the frame body, thereby improving the stability between the lifting mechanism and the frame body; the box body also includes a top cover, and when the top cover is opened, the ducted drone is lifted by the lifting mechanism, which facilitates the start-up and flight of the ducted drone; multiple holes are also provided on the top cover, which also reduces the airflow around the ducted drone and can pass through the holes on the top cover, further increasing the stability of the ducted drone during startup and landing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of the lifting mechanism provided in an embodiment of the present application;

[0028] Figure 2 A structural diagram of a lifting mechanism provided in an embodiment of the present application from one perspective;

[0029] Figure 3 A schematic structural diagram of a fire truck box provided in an embodiment of the present application;

[0030] Figure 4 A schematic cross-sectional view of the lifting mechanism provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of the structure of the lifting mechanism in the descending state provided in an embodiment of the present application;

[0032] Figure 6 A top view of a fire truck provided in an embodiment of the present application.

[0033] Icon: 1-support base; 11-first groove; 12-connecting beam; 2-support frame; 21-first support member; 211-first support arm; 22-second support member; 221-second support arm; 3-roller; 4-support platform; 41-second groove; 42-through hole; 5-driving member; 6-limiting member; 7-frame; 8-fixing member; 9-top cover. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0036] In a first aspect, an embodiment of the present application provides a lifting mechanism for supporting a ducted drone. The lifting mechanism is used to support the ducted drone and can lift the ducted drone up or down, facilitating smooth startup or landing.

[0037] like Figure 1 、 2 As shown in , 5 and 6, the lifting mechanism includes a support base 1 located below the entire lifting mechanism, the support base 1 supports the entire lifting mechanism, the support base 1 supports the entire lifting mechanism, the upper end of the support frame 2 is connected to the support platform 4, and the lower end is connected to the support base 1, one side of the end of the support frame 2 connected to the support platform 4 is rotatably connected to the support platform 4, and the other side is slidably connected, one side of the end of the support frame 2 connected to the support base 1 is rotatably connected to the support base 1, and the other side is slidably connected, and the support frame 2 is slidably connected to the support base 1 and the support platform 4. That is, when the support frame 2 slides relative to the support base 1, the support frame 2 can rise or fall, thereby also changing the height position of the support platform 4. The support platform 4 is used to support the ducted UAV, realizing the lifting and lowering function of the ducted UAV, and a plurality of through holes 42 are provided on the support platform 4. Since the ducted UAV will generate vertical airflow when starting or landing, by providing a plurality of through holes 42, the airflow passes through the through holes 42, avoiding the airflow blowing onto the support platform 4 and generating convection with the ducted UAV, thereby improving the stability of the ducted UAV startup and landing, and also improving the safety.

[0038] like Figure 5 As shown, optionally, in the vertical direction, the ends of the support frame 2 that are rotatably connected to the support base 1 and the support platform 4 are at the same end, and the ends of the support frame 2 that are slidably connected to the support base 1 and the support platform 4 are also at the same end, so that the support frame 2 is more stable during the rising or falling process.

[0039] Optionally, when the support frame 2 slides the farthest distance, the lifting mechanism is in a descending state, and when one end of the support frame 2 gradually slides toward the end where the support frame 2 is rotatably connected to the support base 1, the lifting mechanism is in an ascending state.

[0040] Optionally, the shape of the through holes 42 is not limited, and can be a long strip, or a circle, etc.; and the arrangement of the through holes 42 is also not limited. While meeting the supporting force of the supporting platform 4, the through holes 42 can be arranged more densely to increase the amount of airflow.

[0041] Optionally, in some cases, both sides of one end where the support frame 2 is connected to the support base 1 can slide; both sides of one end where the support frame 2 is connected to the support platform 4 can slide.

[0042] like Figure 1 and 2As shown, as an embodiment, the support frame 2 includes a plurality of support assemblies, each support assembly includes a first support member 21 and a second support member 22, the first support member 21 and the second support member 22 are cross-arranged, and the cross position is rotatably connected, one end of the first support member 21 is rotatably connected to the support base 1, and the other end is slidably connected to the support platform 4; one end of the second support member 22 is slidably connected to the support base 1, and the other end is rotatably connected to the support platform 4, so that the position where the first support member 21 and the second support member 22 are connected provides support for the first support member 21 and the second support member 22, and the first support member 21 and the second support member 22 can slide relative to the support platform 4 and the support base 1 respectively. During the sliding process, the corresponding height of the support platform 4 is also adjusted, and the height of the support platform 4 will also change, thereby achieving the purpose of supporting the ducted UAV and rising or falling.

[0043] Optionally, two support assemblies may be provided, and of course, more support assemblies may also be provided.

[0044] Optionally, the first support member 21 and the support base 1 can be rotatably connected by a latch, and the second support member 22 and the support platform 4 can be connected by a latch.

[0045] Optionally, the connection relationship between the first support member 21 and the second support member 22 and the support base 1 and the support platform 4 respectively can be reversed, that is, one end of the first support member 21 can be slidingly connected to the support base 1, and one end of the second support member 22 can be rotatably connected to the support base 1.

[0046] Optionally, the intersection of the first support member 21 and the second support member 22 may also be connected by a latch.

[0047] Optionally, when the first support member 21 and the second support member 22 slide in directions away from each other, the lifting mechanism is in a descending state, and when the first support member 21 and the second support member 22 slide toward each other, the lifting mechanism is in an ascending state; that is, when the sliding end of the first support member 21 slides toward the end of the second support member 22 that is rotatably connected to the support platform 4, the lifting mechanism is in an ascending state; when the sliding end of the second support member 22 slides toward the end of the first support member 21 that is rotatably connected to the support base 1, the lifting mechanism is also in an ascending state.

[0048] Optionally, in the vertical direction, one end of the first support member 21 rotatably connected to the support base 1 and one end of the second support member 22 rotatably connected to the support platform 4 are the same end; one end of the first support member 21 slidably connected to the support base 1 and one end of the second support base 1 and the support platform 4 are the same end, so that the support platform 4 can be more stable when rising or falling, and the first support member 21 and the second support member 22 can synchronously control the rise or fall of the support platform 4.

[0049] like Figure 1 and 5 As shown, as an embodiment, the first support member 21 includes two first support arms 211, and the second support member 22 includes two second support arms 221. The two first support arms 211 are located between the two second support arms 221, thereby realizing a cross connection between the first support member 21 and the second support member 22, and also avoiding the first support member 21 and the second support member 22 from interfering with each other during the sliding process; the support base 1 is provided with a plurality of through areas, the number of which corresponds to the number of support assemblies; the length of the through area is greater than the length of the first support arm 211 and the second support arm 221, so that when the lifting mechanism is in the lowered state, the first support member 21 and the second support member 22 can be completely located in the through area, avoiding interference of the support base 1 with the first support member 21 and the second support member 22, and also avoiding the first support member 21 and the second support member 22 protruding from the support base 1, so that the height occupied by the lifting mechanism in the lowered state is equal to the thickness of the support base 1, which can reduce the space occupied by the lifting mechanism in the lowered state, further improve space utilization, and avoid affecting the layout of other modules.

[0050] Optionally, the direction of the through area is also the length direction of the support platform 4 and the support base 1 , that is, the sliding direction of the first support member 21 and the second support member 22 .

[0051] like Figure 1 and 2 As shown, as an embodiment, the support base 1 includes a plurality of connecting beams 12, which are arranged parallel to each other and extend along the length direction of the support base 1. Two adjacent connecting beams 12 are respectively provided with first grooves 11 with openings facing each other, and a roller 3 is provided at one end of the second support arm 221. The roller 3 can slide along the first groove 11, so that the second support member 22 can slide relative to the support base 1, and the height of the support platform 4 is also adjusted.

[0052] Optionally, in some cases, the first groove 11 and the roller 3 may also be configured in the form of a slideway and a slider.

[0053] Optionally, the support base 1 includes three connecting beams 12, two of which are located at the outermost sides and serve as the frame of the support base 1, and the other connecting beam 12 is located in the middle position, separating the support base 1 into two through areas, wherein the connecting beam 12 located in the middle position is provided with first grooves 11 on both sides of the two connecting beams 12 facing the outermost sides, so that the two rollers 3 connected to the same second support member 22 can slide in two different first grooves 11 respectively.

[0054] Optionally, the two first support arms 211 are connected by a connecting plate, thereby improving the structural stability of the first support member 21, and the first support arm 211 and the connecting plate can be connected by welding or integral molding; the two second support arms 221 are connected by a connecting plate, thereby improving the structural stability of the second support member 22, and the second support arm 221 and the connecting plate can be connected by welding or integral molding.

[0055] Optionally, both ends of the first support member 21 and the second support member 22 include two connecting plates.

[0056] Optionally, the thickness of the first support member 21 and the second support member 22 does not exceed the thickness of the support base 1 , so that the first support member 21 and the second support member 22 are prevented from protruding from the support base 1 when the lifting mechanism is in the descending state.

[0057] Optionally, the support base 1 may further include four connecting beams 12 , that is, the two middle connecting beams 12 may be welded together as a whole, and the first groove 11 is provided in a direction toward the other two connecting beams 12 .

[0058] Optionally, the second support arm 221 may be connected to the two rollers 3 via a connecting shaft.

[0059] like Figure 4 As shown, as an embodiment, the support platform 4 is provided with a support beam, the support beam is arranged toward the support base 1, the support beam extends along the length direction of the support platform 4, and the support beam is provided with a second groove 41 in the direction of the frame of the support platform 4. The two frames in the length direction of the support platform 4 are also provided with a second groove 41 in the direction of the support beam. A roller 3 is provided at one end of the first support arm 211, and the roller 3 can slide along the second groove 41, so that the first support member 21 can slide relative to the support platform 4, and the height of the support platform 4 is also adjusted.

[0060] Optionally, the first support arm 211 may be connected to the two rollers 3 via a connecting shaft.

[0061] like Figure 1 and 2As shown, as an embodiment, a driving member 5 is provided between the adjacent first support arm 211 and the second support arm 221, one end of the driving member 5 is connected to the first support member 21, and the other end is connected to the second support member 22, and the connection position is higher than the position where the first support member 21 and the second support member 22 are rotatably connected; the driving member 5 has a telescopic stroke, which is used to drive the first support member 21 and the second support member 22 to slide relative to the support platform 4 and the support base 1 respectively. When the driving member 5 is extended, the extended end applies force to the second support member 22. At this time, using the principle of leverage, the sliding end of the second support member 22 will slide relative to the support base 1, and the sliding direction is to slide toward the first support member 21, and at the same time When the first support member 21 is rotated and connected to the second support member 22, the first support member 21 is pushed to slide synchronously, the first support member 21 slides toward the second support member 22 and the second support member 22 slides toward the first support member 21, and the lifting mechanism is in an ascending state; when the driving member 5 contracts, it can push the first support member 21 to slide away from the second support member 22 and push the second support member 22 to slide away from the first support member 21, and the lifting mechanism is in a descending state, thereby realizing the ascending or descending state of the lifting mechanism; in addition, the driving member 5 is arranged in the gap between the adjacent first support arm 211 and the second support arm 221, which reduces the occupied volume and improves space utilization.

[0062] Optionally, the end of the driving member 5 connected to the second support arm 221 is higher than the position where the first support arm 211 and the second support arm 221 are rotatably connected, so that the lever principle can be used to facilitate the driving member 5 to push the second support member 22 to slide.

[0063] Optionally, the driving member 5 can be a single-acting cylinder, and the single-acting cylinder is connected to the hydraulic system on the fire truck. The hydraulic system injects oil into the single-acting cylinder to extend the single-acting cylinder. Since the second support arm 221 is connected to one end of the cylinder through a connecting shaft, using the lever principle, when the cylinder is extended, the sliding end of the second support member 22 slides toward the first support member 21; of course, the driving member 5 can also be a complete hydraulic system to realize the rising or falling of the lifting mechanism through the hydraulic system.

[0064] like Figure 1 and 2 As shown, as an embodiment, one end of the two driving members 5 connected to the same first support member 21 is coaxially arranged, so that the two driving members 5 can synchronously drive the first support member 21 and the second support member 22 to slide relative to the support platform 4 and the support base 1 respectively, and at the same time, it also improves the smoothness of the first support member 21 and the second support member 22 during the sliding process, avoiding the first support member 21 and the second support member 22 from getting stuck.

[0065] like Figure 2As shown, as an embodiment, a limit member 6 is further provided between the adjacent first support arm 211 and the second support arm 221. The limit member 6 is coaxially connected to one end of the driving member 5, and when the driving member 5 is gradually extended, the second support member 22 slides toward the first support member 21, and one end of the first support member 21 slides toward the second support member 22. However, the first support member 21 and the second support member 22 must have a certain intersection angle to ensure the stability of the entire lifting mechanism. Therefore, when the first support member 21 and the second support member 22 slide to a certain position respectively, the driving member 5 can abut against the limit member 6, and the limit member 6 limits the driving member 5 from continuing to extend, thereby limiting the sliding position of the first support member 21 and the second support member 22, thereby meeting the stability of the lifting mechanism.

[0066] Optionally, the limit member 6 is coaxially connected to the end of the driving member 5 that can be extended, and can be connected by a connecting shaft. The limit member 6 can be fixed on one side of the second support arm 221, that is, the relative position of the limit member 6 and the second support arm 221 remains unchanged. When the driving member 5 is extended to the extreme position, the piston rod can abut against the limit member 6. At this time, the second support member 22 cannot continue to slide, which plays a limiting role.

[0067] Optionally, the limiting member 6 is provided with a notch, and the piston rod of the driving member 5 can be embedded in the notch to achieve abutment.

[0068] like Figure 1 As shown, as an embodiment, a plurality of fixing members 8 are provided on both sides of the support base 1, and the fixing members 8 are used to connect with the box body of the fire truck, thereby improving the stability between the lifting mechanism and the box body.

[0069] like Figure 3 、 5 As shown in Figure 6, in the second aspect, the present application provides a fire truck, which includes a box body, which includes a frame body 7, and the frame body 7 is equipped with a lifting mechanism for supporting the ducted drone provided in the first aspect, and the support base 1 is fixedly connected to the frame body 7, thereby improving the stability between the lifting mechanism and the frame body 7; the box body also includes a top cover 9, and when the top cover 9 is opened, the ducted drone is lifted by the lifting mechanism, which facilitates the start-up and flight of the ducted drone; a plurality of holes are also provided on the top cover 9, which also reduces the airflow around the ducted drone and can pass through the holes on the top cover 9, further increasing the stability of the ducted drone during startup and landing.

[0070] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0071] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0072] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A lifting mechanism for supporting a ducted UAV, characterized in that: include: Support base; A support platform for supporting the ducted UAV, wherein the support platform is provided with a plurality of through holes for guiding the airflow generated by the ducted UAV; A support frame is arranged between the support platform and the support base, one side of the end of the support frame connected to the support platform is rotatably connected to the support platform, and the other side is slidably connected; one side of the end of the support frame connected to the support base is rotatably connected to the support base, and the other side is slidably connected; the support frame drives the support platform to rise or fall by sliding at the sliding connection between the support base and the support platform.

2. The lifting mechanism according to claim 1, characterized in that: The support frame includes multiple support assemblies, each of the support assemblies includes a first support member and a second support member, the first support member and the second support member are arranged crosswise and rotatably connected at the cross position, wherein one end of the first support member is rotatably connected to the support base, and the other end is slidably connected to the support platform; one end of the second support member is slidably connected to the support base, and the other end is slidably connected to the support platform.

3. The lifting mechanism according to claim 2, characterized in that: The first support member includes two first support arms, the second support member includes two second support arms, and the two first support arms are located between the two second support arms; The support base is provided with a plurality of through areas, the number of which corresponds to the number of the support components; the length of the through area is greater than the length of the first support arm and the second support arm.

4. The lifting mechanism according to claim 3, characterized in that: The support base includes a plurality of connecting beams, which are arranged parallel to each other and extend along the length direction of the support base, and two adjacent connecting beams are respectively provided with first grooves with openings facing each other; A roller is provided at one end of the second supporting arm, and the roller can slide along the first groove.

5. The lifting mechanism according to claim 4, characterized in that: The support platform is provided with a support beam, which is arranged toward the support base and extends along the length direction of the support platform. The support beam is provided with a second groove in the direction of the frame of the support platform, and the two frames in the length direction of the support platform are also provided with a second groove in the direction of the support beam. The roller is provided at one end of the first supporting arm, and the roller can slide along the second groove.

6. The lifting mechanism according to any one of claims 3 to 5, characterized in that: A driving member is provided between the adjacent first support arm and the second support arm, one end of the driving member is connected to the first support member, and the other end is connected to the second support member, and the connection position is higher than the position where the first support member and the second support member are rotatably connected. The driving member has a telescopic stroke, which is used to drive the first support member and the second support member to slide relative to the support platform and the support base respectively.

7. The lifting mechanism according to claim 6, characterized in that: The two driving members connected to the same first supporting member are coaxially arranged.

8. The lifting mechanism according to claim 6, characterized in that: A limiting member is further provided between the adjacent first supporting arms and the second supporting arms, and the limiting member can abut against the driving member to limit the sliding position of the first supporting member and the second supporting member.

9. The lifting mechanism according to claim 7 or 8, characterized in that: A plurality of fixing parts are provided on both sides of the support base, and the fixing parts are used to be connected to the box body of the fire truck.

10. A fire truck, characterized in that: The fire truck includes a box body, the box body includes a frame body, and further includes a lifting mechanism for supporting a ducted drone according to any one of claims 1 to 9, wherein a support base is connected to the frame body; The box body further comprises a top cover, and a plurality of holes are provided on the top cover.

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