Unmanned aerial vehicle storage and transportation take-off device based on chain

Abstract

The utility model discloses an unmanned aerial vehicle storage and transportation take-off device based on a chain, belongs to the technical field of unmanned aerial vehicle storage and transportation, and is used for solving the technical problem that the unmanned aerial vehicle storage and transportation take-off device cannot stably work in a complex working environment. The unmanned aerial vehicle storage and transportation take-off device comprises a storage box, a power unit, a chain lifting unit, a guide unit and a limiting unit. The chain lifting unit comprises a chain lifting assembly, a lifting platform and a chain tensioning assembly. The chain lifting assembly comprises a chain, a driving chain wheel, a driven chain wheel, an upper chain support and a lower chain support. The two ends of the chain are fixed to the upper surface and the lower surface of the lifting platform through an upper chain support and a lower chain support respectively. The upper chain support and the lower chain support are fixedly connected with the two ends of the chain through a first pin shaft and a second pin shaft respectively. The unmanned aerial vehicle storage and transportation take-off device can adapt to various severe environments and can stably and reliably work in high-temperature, humid, dusty and polluted environments and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of UAV storage and transportation, and relates to a UAV storage and transportation take-off device based on a chain. Background Technique

[0002] Due to its small size, fast speed and low cost, vehicle-mounted small UAVs have great application potential in many fields. At present, the lifting platforms of most UAV automatic storage and transportation take-off devices are driven by motor lead screws.

[0003] However, the structural layout of the lead screw drive occupies a large space. If the motor is arranged vertically, although the shaft can be directly connected to the lead screw, the longitudinal space occupied is large, resulting in too high a box body. If the motor is arranged horizontally, transmission components are required to achieve transmission connection, and the occupied space is also very large. In addition, the lead screw lift has high requirements for environmental conditions, relying on good lubrication conditions and frequent quality-assured maintenance. Too high or too low temperature, and sandy and dusty working environments may all cause poor lubricating oil performance, insufficient lubrication, increased friction, loud working noise of the device, and in severe cases, lead screw jamming and unstable operation of the lifting platform. Content of the Utility Model

[0004] In view of the above analysis, the utility model aims to provide a UAV storage and transportation take-off device based on a chain, which is used to solve the technical problems that the UAV storage and transportation take-off device occupies a large space and cannot work stably in a bad working environment.

[0005] The purpose of the utility model is mainly achieved through the following technical solutions.

[0006] The utility model provides a UAV storage and transportation take-off device based on a chain, which includes a storage box, a power unit, a chain lifting unit, a guiding unit and a limiting unit; the power unit includes a motor with a double output shaft; the chain lifting unit includes a chain lifting component, a lifting platform and a chain tensioning component; there are two groups of chain lifting components, which are symmetrically arranged on both sides of the lifting platform respectively; the chain lifting component includes a chain, a driving sprocket, a driven sprocket, an upper chain support and a lower chain support; the moving direction of the chain is perpendicular to the lifting platform, and both ends of the chain are fixed on the upper surface and the lower surface of the lifting platform through the upper chain support and the lower chain support respectively; both ends of the chain are installed on the upper chain support and the lower chain support through a first pin shaft and a second pin shaft respectively; the axis lines of the first pin shaft and the second pin shaft are perpendicular to each other and parallel to the lifting platform; the two output shafts of the motor can drive the two driving sprockets to rotate synchronously, so that the two chains drive the lifting platform to lift in the storage box, thereby controlling the UAV to move to the storage or take-off position.

[0007] Furthermore, both the upper chain support and the lower chain support are U-shaped supports, the bottom of the U-shaped support is fixed on the lifting platform, and through holes are opened on both side plates of the U-shaped support.

[0008] Further, the first pin shaft passes through the central hole of the roller at one end of the chain and the two through holes of the upper chain support; the second pin shaft passes through the gap between the two rollers at the other end of the chain and the two through holes of the lower chain support.

[0009] Further, threads are provided at the ends of the first pin shaft and the second pin shaft, and the threads cooperate with nuts to clamp and fix the upper chain support and the lower chain support to the two ends of the chain respectively.

[0010] Further, the chain lifting assembly further includes a driven sprocket shaft, one end of which is fixed to the storage box, and the other end is rotatably connected to the driven sprocket through a bearing.

[0011] Further, the chain lifting assembly further includes a sprocket box, which is located outside the driven sprocket and fixed to the storage box.

[0012] Further, the chain tensioning assembly includes a first gasket, a second gasket and an adjustment bracket. Further, it further includes a guiding unit, and the guiding unit includes a guide rail and a sliding bearing. The guide rail is arranged perpendicular to the horizontal direction, and the lifting platform is slidably connected to the guide rail through the sliding bearing.

[0013] Further, it further includes a limiting unit, and the limiting unit includes a sensor and a limiting piece. The limiting piece can trigger the sensor to send a signal to stop the motor from rotating.

[0014] Further, there are two sensors, and the limiting piece can trigger the two sensors respectively when the lifting platform is in the storage and take-off positions.

[0015] Compared with the prior art, the utility model can at least achieve one of the following beneficial effects:

[0016] 1. For the unmanned aerial vehicle storage, transportation and take-off device of the present invention, by arranging the chain lifting unit, there are fewer transmission components, the structure is compact, and it has better environmental adaptability, and can adapt to various harsh environments, and can work stably and reliably in environments such as high temperature, humidity, dust and pollution.

[0017] 2. For the unmanned aerial vehicle storage, transportation and take-off device of the present invention, by arranging two mutually perpendicular pin shafts, the swing of the lifting platform during the movement process can be effectively prevented, and the smoothness of the chain driving the lifting plate to move is increased.

[0018] 3. For the unmanned aerial vehicle storage, transportation and take-off device of the present invention, by setting the guiding unit, it can play a guiding role in the movement of the lifting platform and prevent the lifting platform from deflecting.

[0019] 4. For the unmanned aerial vehicle storage, transportation and take-off device of the present invention, by setting the sprocket box, the chain can be prevented from derailing, and the pollution of dust can also be prevented.

[0020] 5. In the UAV storage, transportation and take-off device of the present invention, by setting a chain tensioning component, not only can the tension of the chain be adjusted to avoid poor meshing or chain vibration caused by the elongation of the chain length after long-term operation, but also the space occupied by the chain tensioning components in the box can be reduced.

[0021] 6. In the UAV storage, transportation and take-off device of the present invention, by setting a limiting unit, the starting position of the lifting platform can be accurately controlled, enabling the device to smoothly store and take off the UAV.

[0022] 7. In the UAV storage, transportation and take-off device of the present invention, by setting a double-output shaft motor, the structure of the device is made compact and the occupied space is small.

[0023] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent description, and some advantages can be made obvious from the description or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained from the content specifically pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the external structure of the UAV storage, transportation and take-off device according to the embodiment of the present utility model;

[0025] Figure 2 is a schematic diagram of the internal structure of the UAV storage, transportation and take-off device according to the embodiment of the present utility model;

[0026] Figure 3 is a schematic diagram of a partial structure of the embodiment of the present utility model;

[0027] Figure 4 is a schematic diagram of another partial structure of the embodiment of the present utility model;

[0028] Figure 5 is a schematic diagram of the structure of the chain mounting member according to the embodiment of the present utility model;

[0029] Figure 6 is a schematic diagram of the structure of the limiting unit according to the embodiment of the present utility model;

[0030] Figure 7 is a schematic diagram of a partial structure of the chain tensioning component according to the embodiment of the present utility model.

[0031] Reference numerals:

[0032] 1 - Storage box; 11 - Box frame; 12 - Wall panel; 13 - Bottom plate; 2 - Power unit; 21 - Motor; 22 - Motor mounting bracket; 3 - Lifting unit; 31 - Chain lifting assembly; 311 - Chain; 312 - Driving sprocket; 313 - Driven sprocket; 314 - Driving sprocket shaft; 315 - Driven sprocket shaft; 316 - Sprocket box; 317 - Chain mounting piece; 3171 - Upper chain support; 3172 - Lower chain support; 3173 - First pin shaft; 3174 - Second pin shaft; 32 - Lifting platform; 33 - Chain tensioning assembly; 331 - First set of gaskets; 332 - Second set of gaskets; 333 - Adjusting bracket; 4 - Guiding unit; 41 - Guide rail; 411 - Annular boss; 42 - Sliding bearing; 5 - Limiting unit; 51 - Sensor; 52 - Limiting piece. Detailed implementation mode

[0033] The following combines the drawings to specifically describe the preferred embodiments of the present invention. Among them, the drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, and are not used to limit the scope of the present invention.

[0034] The present invention provides a chain-based storage and take-off device for unmanned aerial vehicles, including a storage box 1, a power unit 2, a chain lifting unit 3, a guiding unit 4, a limiting unit 5 and a controller. The power unit 2, the chain lifting unit 3, the guiding unit 4, the limiting unit 5 and the controller are all installed in the storage box 1. The chain lifting unit 3 includes a lifting platform 32, and a drone receiving cylinder is fixedly installed on the lifting platform 32 by screws. The drone is folded and stored in the receiving cylinder. The controller can control the operation of the power unit 2. The power unit 2 drives the chain lifting unit 3 to move the lifting platform 32 up and down. When the lifting platform 32 descends, it drives the receiving cylinder and the drone back to the bottom of the box to achieve storage. When the lifting platform 32 ascends, it drives the receiving cylinder and the drone to the top of the box, ready for take-off.

[0035] Specifically, as Figure 1 、 Figure 2 shown, the storage box 1 includes a box frame 11, a wall panel 12 and a bottom plate 13. The box frame 11 is a cubic frame. Preferably, the box frame 11 is integrally formed by stainless steel, aluminum alloy or other hard metals or formed by welding, riveting or screwing. The wall panel 12 and the bottom plate 13 are made of hard metal or composite materials and are fixed on the box frame 11 by screwing, welding or riveting. The wall panel 12 includes a front wall panel, a rear wall panel, a left wall panel and a right wall panel.

[0036] Specifically, as Figure 3As shown, the power unit 2 includes a motor 21, a motor mounting bracket 22, and a coupling. The motor 21 is mounted on the bottom plate 13 through the motor mounting bracket 22. The motor 21 has dual output shafts that rotate synchronously. The dual output shafts of the motor 21 are parallel to the bottom plate 13 and are used to synchronously drive two sets of transmission components of the chain lifting unit 3, which can make the structure of the device more compact and reduce the occupied space.

[0037] Specifically, as Figure 2 shown, the chain lifting unit 3 includes a chain lifting assembly 31 and a lifting platform 32; there are two sets of chain lifting assemblies 31, which are symmetrically arranged on both sides of the lifting platform 32.

[0038] Furthermore, the lifting platform 32 is located above the power unit 2 and is parallel to the bottom plate 13. Multiple screw holes for fixedly connecting with the drone accommodation cylinder are provided on the lifting platform 32.

[0039] Furthermore, as Figure 3 and Figure 4 shown, each set of transmission components includes a chain 311, a driving sprocket 312, a driven sprocket 313, a driving sprocket shaft 314, a driven sprocket shaft 315, a sprocket box 316, and a chain mounting member 317.

[0040] Preferably, as Figure 3 shown, the driving sprocket 312 is fixedly connected to the driving sprocket shaft 314, and the two driving sprocket shafts 314 are respectively connected to the two output shafts of the motor 21 through two couplings.

[0041] Preferably, as Figure 4 shown, the two driven sprocket shafts 315 are respectively located directly above the two driving sprocket shafts 314, and one end is fixedly connected to the upper part of the box body frame 11 through screws; the driven sprockets 313 are rotatably mounted on the driven sprocket shafts 315 through bearings.

[0042] Preferably, as Figure 4 shown, the sprocket box 316 is located outside the driven sprocket 313, which can prevent the chain 311 from derailing and can also prevent dust pollution. The sprocket box 316 is fastened to the wall plate 12 through screws. The other end of the driven sprocket shaft 315 is a flattened shaft, which is matched and fixed with the central hole of the sprocket box 316, which can not only fix the other end of the driven sprocket shaft 315 but also prevent the driven sprocket shaft 315 from rotating.

[0043] Preferably, as Figure 3 and Figure 4 shown, each set of driving sprockets 312 and driven sprockets 313 are engaged with a chain 311, and the central connection line of the driving sprocket 312 and the driven sprocket 313 is perpendicular to the plane of the bottom plate 13, so that the moving direction of the chain 311 is also perpendicular to the plane of the bottom plate 13.

[0044] Preferably, as Figure 5 shown, the chain mounting member 317 includes an upper chain support 3171, a lower chain support 3172, a first pin shaft 3173 and a second pin shaft 3174. The upper chain support 3171 and the lower chain support 3172 are respectively fixed on the upper surface and the lower surface of the lifting platform 32. Preferably, both the upper chain support 3171 and the lower chain support 3172 are U-shaped supports. A bottom center through hole is provided at the center of the bottom of the U-shaped support for screwing and fixing with the lifting platform 32. The connection line of the bottom center through holes of the upper chain support 3171 and the lower chain support 3172 is perpendicular to the lifting platform 32 so that the positions are opposite when the two ends of the chain 311 are fixed.

[0045] Preferably, fastening through holes are provided on both side plates of the upper chain support 3171 and the lower chain support 3172. The first pin shaft 3173 and the second pin shaft 3174 respectively pass through the upper chain support 3171 and the lower chain support 3172. Threads are provided at one ends of the first pin shaft 3173 and the second pin shaft 3174, and nuts are used to clamp and fix both sides of the upper chain support 3171 and the lower chain support 3172.

[0046] It should be noted that the connection line of the bottom center through holes of the upper chain support 3171 and the lower chain support 3172 is located on the middle plane of the two gear end faces of the driving sprocket 312 and the driven sprocket 313 on the same side, so that the centers of all the rollers of the chain 311 after installation are on a plane, thereby ensuring that the chain 311 always runs on a plane.

[0047] For the UAV storage, transportation and take-off device of this embodiment, two driving sprockets 312 are driven to rotate synchronously by the two output shafts of the motor 21, so that the two chains 311 drive the lifting platform 32 to move up and down in the storage box 1, thereby controlling the UAV to move to the position for storage, transportation or take-off.

[0048] Furthermore, as Figure 5As shown in the figure, in order to increase the stability of the lifting platform 32 when driven by the chain 311, preferably, the first pin shaft 3173 passes through the central hole of the chain roller at one end of the chain 311, and the second pin shaft 3174 passes through the gap between the two chain rollers at the other end of the chain 311, so that the axis lines of the first pin shaft 3173 and the second pin shaft 3174 are perpendicular to each other. This can effectively prevent the lifting platform 32 from swinging during movement, thereby increasing the stability of the chain driving the lifting plate. At the same time, since the first pin shaft 3173 passes through the central hole of the chain roller at one end of the chain 311, this chain roller can still rotate around the first pin shaft 3173, while the second pin shaft 3174 passes through the gap between the two chain rollers at the other end of the chain 311. When the chain 311 is tensioned, one chain roller located inside the lower chain support 3172 is mutually limited with the second pin shaft 3174, and there is a gap between the other chain roller located outside the lower chain support 3172 and the second pin shaft 3174, and it can still rotate freely. Further, in order to ensure the tension of the chain 311, especially to avoid poor meshing or chain vibration phenomena caused by the elongation of the chain 311 after long-term operation, the chain lifting unit 3 of this embodiment further includes a chain tensioning assembly 33. The chain tensioning assembly 33 includes a first group of gaskets 331, a second group of gaskets 332, and an adjustment bracket 333. The first group of gaskets 331 is thicker for adjustment at a larger distance, and the second group of gaskets 332 is thinner for fine adjustment during installation.

[0049] Preferably, as Figure 3 shown, the first group of gaskets 331 is located at the lower part of the motor 21. Reducing the number of gaskets in the first group of gaskets 331 can increase the distance between the driving sprocket shaft 314 and the driven sprocket shaft 315, thereby achieving the purpose of tensioning the chain.

[0050] Preferably, as Figure 7 shown, the second group of gaskets 332 and the adjustment bracket 333 are fixed on the top of the storage box 1. The adjustment bracket 333 is an L-shaped bracket. The side of the adjustment bracket 333 is fixed to the wall panel 12 by screws. The screws pass through the side of the adjustment bracket 333, the waist-shaped hole on the wall panel 12, and the mounting point on the driven sprocket shaft 315 or the sprocket box 316 and are then tightened and fixed on the wall panel; the upper surface of the adjustment bracket 333 is tightened and fixed on the upper surface of the box body 1. The second group of gaskets 332 is located between the adjustment bracket 333 and the upper surface of the box body 1. By adjusting the number of gaskets in the second group of gaskets 332, the up and down movement of the driven sprocket shaft 315 and the sprocket box 316 can be realized, thereby adjusting the distance between the driving sprocket shaft 314 and the driven sprocket shaft 315 to ensure the tension of the chain 311. Compared with the design of the traditional tensioning wheel, the chain tensioning assembly 33 of this embodiment can reduce the space occupied by the chain tensioning components in the box body.

[0051] Specifically, asFigure 2 and Figure 3 As shown in Figure 3 , the guiding unit 4 includes a guide rail 41 and a sliding bearing 42, which are used to prevent the lifting platform 32 from deflecting during the up and down movement.

[0052] Furthermore, the guide rail 41 is a cylindrical rod perpendicular to the lifting platform 32, and both ends are fixedly connected to the bottom plate 13 and the upper part of the box frame 11 respectively. Optionally, four guide rails 41 are provided. There are four mounting holes 321 at the four corners of the lifting platform 32, and sliding bearings 42 are installed in all four mounting holes 321. The four guide rails 41 respectively pass through the sliding bearings 42. The guide rail 41 can play a guiding role in the movement of the lifting platform 32, so that the lifting platform 32 moves smoothly up and down in a straight line.

[0053] Preferably, as Figure 3 shown, an annular boss 411 is provided at the lower section of the guide rail 41, which is used to limit the lowest starting position of the lifting platform 32.

[0054] Specifically, as Figure 2 , Figure 3 , Figure 4 and Figure 6 shown, the limiting unit 5 includes two groups of sensors 51 and limiting pieces 52. The sensors 51 are electrically connected to the motor 21. The two sensors 51 are respectively fixed at preset positions on the upper and lower parts of the box frame 11; the two limiting pieces 52 are respectively fixedly connected to the upper surface and the lower surface of the lifting platform 32 correspondingly.

[0055] When the lifting platform 32 moves to the position for the UAV to take off, the upper limiting piece 52 triggers the upper sensor 51. The upper sensor 51 sends a signal to the motor 21, and the motor 21 stops rotating. The lifting platform 32 stops rising. At the same time, since the motor 21 is locked, the sprocket chain stops moving, and the lifting platform 32 will stay at the upper limit position and will not fall. When the lifting platform 32 moves to the lower limit position, the lower limiting piece 52 triggers the lower sensor 51. The lower sensor 51 sends a signal to the motor 21, and the motor 21 stops rotating. The lifting platform 32 stops descending, so that the UAV is parked at the storage and transportation position.

[0056] Optionally, an opening mechanism is provided at the top of the storage box 1 to further prevent dust or other foreign objects from contaminating.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A chain-based UAV storage, transportation and take-off device, characterized in that, It includes a storage box (1), a power unit (2), a chain lifting unit (3), a guiding unit (4), and a limiting unit (5); The power unit (2) includes a motor (21), and the motor (21) has a double output shaft; The chain lifting unit (3) includes a chain lifting assembly (31), a lifting platform (32), and a chain tensioning assembly (33); There are two sets of the chain lifting assemblies (31), which are symmetrically arranged on both sides of the lifting platform (32) respectively; The chain lifting assembly (31) includes a chain (311), a driving sprocket (312), a driven sprocket (313), an upper chain support (3171), a lower chain support (3172), a first pin shaft (3173), and a second pin shaft (3174); The moving direction of the chain (311) is perpendicular to the lifting platform (32), and both ends of the chain (311) are fixed on the upper surface and the lower surface of the lifting platform (32) through the upper chain support (3171) and the lower chain support (3172) respectively; Both ends of the chain (311) are installed on the upper chain support (3171) and the lower chain support (3172) through the first pin shaft (3173) and the second pin shaft (3174) respectively; The axis lines of the first pin shaft (3173) and the second pin shaft (3174) are perpendicular to each other and parallel to the lifting platform (32); The two output shafts of the motor (21) can drive the two driving sprockets (312) to rotate synchronously, so that the two chains (311) drive the lifting platform (32) to lift in the storage box (1), thereby controlling the UAV to move to the storage / transport or take-off position.

2. The chain-based UAV storage, transportation and take-off device according to claim 1, characterized in that Both the upper chain support (3171) and the lower chain support (3172) are U-shaped supports, the bottom of the U-shaped support is fixed on the lifting platform (32), and through holes are opened on both side plates of the U-shaped support.

3. The chain-based UAV storage, transportation and take-off device according to claim 2, wherein, The first pin shaft (3173) passes through the center hole of the drum at one end of the chain (311) and the two through holes of the upper chain support (3171); the second pin shaft (3174) passes through the gap between the two drums at the other end of the chain (311) and the two through holes of the lower chain support (3172).

4. The chain-based UAV storage, transportation and take-off device according to claim 3, wherein, Threads are provided at the ends of the first pin shaft (3173) and the second pin shaft (3174), and the threads cooperate with nuts to clamp and fix the upper chain support (3171) and the lower chain support (3172) to both ends of the chain (311) respectively.

5. The chain-based UAV storage, transportation and take-off device according to claim 4, wherein, The chain lifting assembly (31) further includes a driven sprocket shaft (315), one end of the driven sprocket shaft (315) is fixed on the storage box (1), and the other end is rotatably connected to the driven sprocket (313) through a bearing.

6. The chain-based UAV storage, transportation and take-off device according to claim 5, characterized in that, The chain lifting assembly (31) further includes a sprocket box (316), the sprocket box (316) is located outside the driven sprocket (313) and fixed on the storage box (1).

7. The chain-based unmanned aerial vehicle storage, transportation and take-off device according to claim 1, characterized in that, The chain tensioning assembly (33) includes a first set of gaskets (331), a second set of gaskets (332), and an adjustment bracket (333).

8. The chain-based UAV storage, transportation and take-off device according to any one of claims 1 to 7, characterized in that, It further includes a guiding unit (4). The guiding unit (4) includes a guide rail (41) and a sliding bearing (42). The guide rail (41) is arranged perpendicular to the horizontal direction, and the lifting platform (32) is slidably connected to the guide rail (41) through the sliding bearing (42).

9. The chain-based UAV storage, transportation and take-off device according to any one of claims 1 to 7, characterized in that, It further includes a limiting unit (5). The limiting unit (5) includes a sensor (51) and a limiting piece (52). The limiting piece (52) can trigger the sensor (51) to send a signal to stop the motor (21) from rotating.

10. The chain-based UAV storage, transportation and take-off device according to claim 9, characterized in that, There are two of the sensors (51), and the limiting piece (52) can trigger the two sensors (51) respectively when the lifting platform (32) is in the storage and take-off positions.

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