Safety lifting platform device of geological survey unmanned aerial vehicle

Abstract

The invention belongs to the technical field of geological survey unmanned aerial vehicles, and particularly relates to a safety lifting platform device of a geological survey unmanned aerial vehicle, the safety lifting platform device comprises a platform assembly and a supporting assembly, the platform assembly comprises a first flat plate and a second flat plate which are mutually hinged, and the first flat plate and the second flat plate can be mutually folded and unfolded; the number of the supporting assemblies is two, and each supporting assembly comprises a rolling assembly, a locking assembly and an adjusting assembly. The two rolling assemblies are arranged on the left side and the right side of the first flat plate correspondingly, each rolling assembly comprises a roller supporting piece, a roller and a brake moving piece, the roller supporting pieces are fixedly connected to the first flat plate, the rollers are rotationally connected to the roller supporting pieces, and the brake moving pieces are fixedly connected to the sides, close to the first flat plate, of the rollers; the safe lifting platform device is of a foldable design, so that the size can be reduced, carrying is convenient, in addition, the safe lifting platform device can roll and move on the ground in a folded state, the carrying difficulty is reduced, and the portability of the whole safe lifting platform device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geological survey unmanned aerial vehicles, and in particular relates to a safety lifting platform device for a geological survey unmanned aerial vehicle. Background Art

[0002] Drones are commonly used tools in geological survey activities. For some complex geological conditions, drones are usually used in conjunction with geological survey cameras for remote control survey operations. This can greatly reduce the workload of surveyors and improve survey efficiency.

[0003] Due to the variety of outdoor terrain, when conducting drone surveys in rugged terrain where it is inconvenient to lift drones, drone lifting platforms are often used for takeoff and landing. However, common platform devices are mostly simple flat plates, and moving them requires the user to completely rely on their strength to overcome the weight of the entire platform, which is laborious to carry outdoors. Therefore, to address the above problems, we proposed a safe lifting platform device for geological survey drones. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present invention discloses a safe lifting platform device for a geological survey drone.

[0005] To achieve the above object, a technical solution adopted by the present invention is:

[0006] A safe lifting platform device for a geological survey drone, comprising a platform assembly and a support assembly, wherein the platform assembly comprises a first flat plate and a second flat plate hinged to each other, wherein the first flat plate and the second flat plate can be folded and flattened relative to each other;

[0007] The support assembly comprises two groups, each group of support assemblies comprises a rolling assembly, a locking assembly and an adjusting assembly;

[0008] The two rolling assemblies are respectively provided on the left and right sides of the first flat plate, and the rolling assemblies include a roller support, a roller, and a brake movable member. The roller support is fixedly connected to the first flat plate, the roller is rotatably connected to the roller support, and the brake movable member is fixedly connected to the side of the roller close to the first flat plate.

[0009] The two locking assemblies are respectively provided on the left and right sides of the first flat plate, and the locking assemblies include a braking fixed member and an elastic member. The braking fixed member is slidably connected to the roller support member, and the sliding direction of the braking fixed member is parallel to the rotation axis of the roller. The elastic member is used to push the braking fixed member toward the side of the braking movable member. When the braking fixed member and the braking movable member remain engaged under the pushing action of the elastic member, the roller will not be able to rotate relative to the roller support member.

[0010] The two adjustment components are respectively provided on the left and right sides of the second flat plate. When the first flat plate and the second flat plate are in a folded state, the adjustment components can be combined with the support component to lock the first flat plate and the second flat plate in the folded state.

[0011] When the adjusting assembly is combined with the supporting assembly, the braking fixed member will not be combined with the braking movable member. When the braking fixed member is not in contact with the braking movable member, the roller can rotate relative to the roller supporting member.

[0012] Furthermore, the platform assembly also includes a hinge, and hinge grooves are provided at opposite ends of the first plate and the second plate, and both ends of the hinge are hinged in the hinge grooves of the first plate and the second plate respectively.

[0013] Furthermore, the platform assembly further comprises a handle, the handle comprising a sliding member, a pulling member and a limiting member, the pulling member being fixedly connected to the upper end of the sliding member, and the limiting member being fixedly connected to the side surface of the sliding member;

[0014] The first plate is provided with a handle assembly groove for assembling the handle, and the handle assembly groove includes a sliding member groove, a pulling member receiving groove, and a limiting member groove. The pulling member receiving groove is provided at one end of the first plate hinged to the second plate, the sliding member groove is provided at the bottom of the pulling member receiving groove, and the limiting member groove is provided on the back of the first plate and is connected to the sliding member groove.

[0015] The sliding member is slidably assembled in the sliding member sliding groove, the limiting member is slidably assembled in the limiting member sliding groove, and the pulling member accommodating groove is used to accommodate the pulling member.

[0016] Furthermore, a handle receiving groove for receiving the handle is formed at one end of the second plate hinged to the first plate. When the first plate and the second plate are in a mutually flattened state, the handle receiving groove will be aligned with the handle assembly groove.

[0017] Furthermore, the roller support member includes a roller shaft and a guide shaft, the two ends of the guide shaft are respectively fixed to the first flat plate and the guide shaft, the roller is rotatably connected to the roller shaft, and the brake fixed member is slidably connected to the outside of the guide shaft, and the brake fixed member cannot rotate relative to the guide shaft.

[0018] Furthermore, the roller support also includes a connecting member, which is used to connect to the first flat plate, the guide shaft is fixedly connected to the connecting member, and the elastic member is sleeved on the outside of the guide shaft and located between the connecting member and the brake stator.

[0019] Furthermore, the opposite sides of the brake fixed member and the brake movable member are both circular structures coaxial with the roller, and the brake fixed member has a plurality of fixed meshing teeth arranged in a circular row on the side close to the brake movable member, and the brake movable member has a plurality of movable meshing teeth arranged in a circular row on the side close to the brake fixed member, and the plurality of fixed meshing teeth and the plurality of movable meshing teeth can engage with each other.

[0020] Furthermore, the braking member has an outer edge plate protruding radially outward at one end away from the roller;

[0021] The adjustment assembly includes a rotation locking member and a locking plate, wherein the locking plate is rotatably connected to the end of the second flat plate, and the rotation locking member can lock the locking plate to the end of the second flat plate so that the locking plate cannot rotate relative to the second flat plate;

[0022] A brake stator receiving groove for receiving the brake stator is formed on the side of the lock plate, and the brake stator receiving groove extends along the rotation direction of the lock plate;

[0023] When the outer end of the outer edge plate abuts against the inner end of the lock plate, the braking fixed member will not be engaged with the braking movable member;

[0024] When the brake stator is accommodated in the brake stator accommodating groove, the opening of the brake stator accommodating groove faces the second flat plate.

[0025] Furthermore, the lock plate includes a plate body and a friction member, the plate body is fixedly connected to the side surface of the friction member, the brake stator receiving groove is provided on the plate body, and the friction member is provided with a rotation connection hole;

[0026] The rotation locking member includes an inner connecting column and an outer connecting column, the inner connecting column is fixedly connected to the second flat plate, the friction member is rotatably connected to the outer side of the inner connecting column through the rotation connecting hole, one end of the outer connecting column has an internal threaded hole, the outer connecting column is threadedly connected to the outer side of the inner connecting column through the internal threaded hole, and the friction member is located between the outer connecting column and the second flat plate.

[0027] Furthermore, the plate body is provided with a guide slope on one side of the opening of the brake stator accommodating groove. When the brake stator is combined with the brake movable member, the guide slope can rotate with the plate body until it abuts against the edge of the outer end of the outer edge plate.

[0028] The present invention discloses a safety lifting platform device for a geological survey drone. The safety lifting platform device is foldable, which can reduce the volume and facilitate portability. In addition, the safety lifting platform device can be rolled on the ground in the folded state to reduce the difficulty of carrying and improve the portability of the entire safety lifting platform device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle;

[0032] Figure 3 for Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0033] Figure 4 This is a schematic diagram of a first cross-sectional structure of an embodiment of the present invention;

[0034] Figure 5 for Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0035] Figure 6 for Figure 5 A schematic diagram of the structure at D in the middle;

[0036] Figure 7 This is a schematic diagram of a second cross-sectional structure of an embodiment of the present invention;

[0037] Figure 8 for Figure 7 A magnified schematic diagram of the structure at E in the middle;

[0038] Figure 9 This is a schematic structural diagram of a roller support member in one embodiment of the present invention;

[0039] Figure 10 This is a schematic structural diagram of an internal connecting column in one embodiment of the present invention;

[0040] Figure 11 Schematic diagram of the structure of a locking plate in one embodiment of the present invention.

[0041] The meanings of the reference numerals in the accompanying drawings are:

[0042] Platform assembly 1, first plate 11, hinge slot 111, sliding member slot 112, pulling member receiving slot 113, limiting member slot 114, second plate 12, handle receiving slot 121, hinge 13, handle 14, sliding member 141, pulling member 142, limiting member 143, support assembly 2, rolling assembly 21, roller support member 211, roller 212, brake movable member 213, movable meshing tooth 2131, locking assembly 22. Brake fixed member 221, roller shaft 2211, guide shaft 2212, connecting member 2213, fixed meshing teeth 2214, outer edge plate 2215, elastic member 222, adjusting assembly 23, rotation locking member 231, inner connecting column 2312, outer connecting column 2313, locking plate 232, brake fixed member accommodating groove 2321, plate body 2322, friction member 2323, rotation connecting hole 2324, guide inclined surface 2325. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the accompanying drawings.

[0044] Reference Figures 1-11 As shown, a safe lifting platform device for a geological survey UAV in this embodiment includes a platform component 1 and a support component 2.

[0045] The platform assembly 1 specifically includes a first flat plate 11 and a second flat plate 12 that are hinged to each other. The first flat plate 11 and the second flat plate 12 can be folded and flattened relative to each other. In this embodiment, the specific structure that allows the first flat plate 11 and the second flat plate 12 to be hinged is a hinge 13. To be installed on the hinge 13, hinge grooves 111 are formed at opposite ends of the first flat plate 11 and the second flat plate 12. The two ends of the hinge 13 are respectively hinged within the hinge grooves 111 of the first flat plate 11 and the second flat plate 12, so that the first flat plate 11 and the second flat plate 12 can be folded and flattened relative to each other. It is worth mentioning that this embodiment has two hinges 13, which are spaced apart from each other in front and back, thereby improving the connection strength between the first flat plate 11 and the second flat plate 12.

[0046] There are two groups of support assemblies 2 , and each group of support assemblies 2 includes a rolling assembly 21 , a locking assembly 22 and an adjusting assembly 23 .

[0047] Two rolling assemblies 21 are respectively provided on the left and right sides of the first flat plate 11. The rolling assemblies 21 specifically include a roller support 211, rollers 212, and a brake member 213. In this embodiment, the roller support 211 includes a connector 2213, a guide shaft 2212, and a roller shaft 2211. The connector 2213 is specifically L-shaped and is fixedly connected to the corner of the first flat plate 11 via multiple bolts. The ends of the guide shaft 2212 are respectively fixedly connected to the connector 2213 and the roller shaft 2211. In addition, the cross-section of the guide shaft 2212 in this embodiment is a regular hexagon. In this embodiment, the rollers 212 on both sides are rotatably connected to the roller shafts 2211 on both sides, and bearings are also installed between the roller shafts 2211 and the rollers 212. In this way, the first flat plate 11 can be abutted against the ground via the two rollers 212, so that the first flat plate 11 can move on the ground in a rolling manner. The brake movable member 213 is fixedly connected to the side of the roller 212 close to the first plate 11 and has a cylindrical structure. In addition, the brake movable member 213 has a plurality of movable meshing teeth 2131 arranged in a circular array on the side close to the first plate 11.

[0048] Two locking assemblies 22 are disposed on the left and right sides of the first plate 11, respectively. The locking assemblies 22 specifically include a brake stator 221 and an elastic member 222. In this embodiment, the brake stator 221 has a regular hexagonal through-hole. The brake stator 221 is sleeved onto the outside of the guide shaft 2212 through this regular hexagonal through-hole, so that the sliding direction of the brake stator 221 is parallel to the rotation axis of the roller 212. Furthermore, this sleeved arrangement prevents the brake stator 221 from rotating relative to the guide shaft 2212. The brake stator 221 also has a plurality of circularly arranged fixed meshing teeth 2214 on the side facing away from the first plate 11. These fixed meshing teeth 2214 can mesh with the movable meshing teeth 2131, thereby coupling the brake stator 221 with the brake movable member 213. The brake stator 221 of this embodiment also has a radially outwardly projecting outer edge plate 2215 on the end facing away from the roller 212. The elastic member 222 of this embodiment is specifically a coil spring, which is sleeved outside the guide shaft 2212 and located between the brake fixed member 221 and the connecting member 2213. Under the elastic force of the elastic member 222, the brake fixed member 221 is pushed toward the brake movable member 213 until the brake fixed member 221 and the brake movable member 213 are engaged. In this way, the roller 212 cannot rotate relative to the roller support member 211, that is, cannot rotate relative to the first plate 11.

[0049] Two adjustment assemblies 23 are located on the left and right sides of the second plate 12, respectively. These assemblies specifically comprise a rotational locking member 231 and a locking plate 232. The locking plate 232 comprises a plate body 2322 and a friction member 2323. The plate body 2322 is secured to the side of the friction member 2323. The plate body 2322 defines a brake stator receiving slot 2321, and the friction member 2323 defines a rotational connection hole 2324. The rotational locking member 231 specifically comprises an inner connecting post 2312 and an outer connecting post 2313. The inner connecting post 2312 is hollow, its closed end secured to the second plate 12 via multiple screws. The friction member 2323 is rotationally connected to the outer side of the inner connecting post 2312 via the rotational connection hole 2324. The specific rotational connection method involves defining a retaining spring groove on the outer side of the inner connecting post 2312. The friction member 2323 is then inserted through the rotational connection hole 2324 onto the outer side of the inner connecting post 2312. An external retaining spring is then installed within the retaining spring groove. This prevents the friction member 2323 from disengaging from the rotational connection hole 2324, allowing the lock plate 232 to pivotally connect to the side of the second plate 12, thus allowing the lock plate 232 to rotate. In this embodiment, an internally threaded hole is defined at one end of the external connecting post 2313, through which the external connecting post 2313 is threadedly connected to the outer side of the inner connecting post 2312. Correspondingly, a retaining spring groove is also provided at the end of the internally threaded hole on the outer connecting post 2313 to provide clearance for the external retaining spring. It is important to emphasize that the friction member 2323 is located between the external connecting post 2313 and the second plate 12. Thus, when the user tightens the outer connecting post 2313 toward the second plate 12, the friction member 2323 is clamped between the outer connecting post 2313 and the second plate 12. Rotating the locking member 231 then locks the locking plate 232 at the end of the second plate 12, preventing it from rotating relative to the second plate 12. Conversely, when the outer connecting post 2313 is loosened, the locking plate 232 can rotate relative to the second plate 12.

[0050] It is worth mentioning that the brake stator accommodating groove 2321 extends along the rotation direction of the plate body 2322. In addition, the plate body 2322 is also provided with a guide slope 2325 on the opening side of the brake stator accommodating groove 2321. When the brake stator 221 is combined with the brake movable member 213, the guide slope 2325 can rotate with the plate body 2322 until it abuts against the edge of the outer end of the outer edge plate 2215.

[0051] When the first flat plate 11 and the second flat plate 12 are in a folded state, if the adjustment component 23 is not combined with the support component 2, the brake fixed member 221 will remain engaged with the brake movable member 213 under the elastic force of the elastic member 222, and the roller 212 will not be able to rotate relative to the roller support member 211 in this state. When the locking plate 232 is rotated to abut against the outer end of the outer plate 2215 through the inner end, the fixed meshing teeth 2214 on the brake stator 221 will no longer mesh with the movable meshing teeth 2131, so that the roller 212 is unlocked and the roller 212 can be rotated. In this position, the brake member receiving groove 2321 is locked outside the brake member 213, meaning that the brake member 213 is contained within the brake member receiving groove 2321. Furthermore, in this position, the opening of the brake member receiving groove 2321 faces the second plate 12. At this point, if the outer connecting post 2313 is tightened, the side locking plate 232 will not rotate, and the brake member 213 will remain in the brake member receiving groove 2321. This prevents the first and second plates 11, 12 from opening relative to each other, thereby maintaining their folded position. This means that when the adjustment assembly 23 is engaged with the support assembly 2, the first and second plates 11, 12 are locked in their folded position. In this position, the entire safety lifting platform device can be rolled on the ground via the two rollers 212. The user only needs to control the entire device to move it, without having to carry the entire device with the weight of the device, making it convenient to carry outdoors.

[0052] To facilitate the user's control of the entire device for movement, this embodiment also makes the following improvements. Specifically, the platform assembly 1 also includes a handle 14, which includes a sliding member 141, a pulling member 142, and a limiting member 143. In this embodiment, the sliding member 141 and the pulling member 142 are respectively a vertical rod and a horizontal rod. The horizontal rod is fixed to the upper end of the vertical rod and has a threaded hole on the lower side of the vertical rod. The limiting member 143 is a bolt threaded into the threaded hole. The first plate 11 is also provided with a handle assembly groove for assembling the handle 14. The handle assembly groove specifically includes a sliding member groove 112, a pulling member receiving groove 113, and a limiting member groove 114. The pulling member receiving groove 113 is provided at one end of the first plate 11 where the second plate 12 is hinged. The sliding member groove 112 is provided at the bottom of the pulling member receiving groove 113. The limiting member groove 114 is provided on the back of the first plate 11 and is connected to the sliding member groove 112. The sliding member 141 is slidably assembled in the sliding member slot 112 , the limiting member 143 is slidably assembled in the limiting member slot 114 , and the pulling member receiving slot 113 is used to receive the pulling member 142 .

[0053] When the safety lifting platform device is in a vertical or vertically tilted position with the roller 212 touching the ground, the handle 14 will sink into the handle assembly slot under the action of gravity. In this state, the pull member 142 will be located in the pull member receiving slot 113. At this time, if the user needs to move the entire device, they can pull the pull member 142 upward from the pull member receiving slot 113, thereby allowing the entire handle 14 to extend upward from the handle assembly slot. In this way, the movement of the entire device can be controlled by pulling the handle 14, making it easier for the user to control the movement of the entire device. It is worth mentioning that the limit member 143 will cooperate with the limit member slide slot 114 to limit the upward sliding travel of the handle 14, thereby preventing the handle 14 from completely sliding out of the handle assembly slot.

[0054] When the safety lifting platform device needs to be deployed for drone takeoff and landing, the user can loosen the external connecting columns 2313 on both sides and then rotate the lock plate 232 to disengage the brake stator 221. The brake stator 221 then slides outward under the elastic force of the elastic member 222 to engage with the brake movable member 213, thereby braking the roller 212. In this way, after the second plate 12 is deployed relative to the first plate 11, one end of the first plate 11 can be supported by the two non-rotating rollers 212. Since the rollers 212 cannot rotate, the first plate 11 can maintain a relatively stable contact with the ground. After the second plate 12 is unfolded relative to the first plate 11, the locking plates 232 on either side, due to their rotational connection with the second plate 12, automatically descend under the action of gravity. In this state, the two locking plates 232 and the two rollers 212 are kept in contact with the ground. The height of the first plate 11 and the second plate 12 is then adjusted so that they are nearly horizontal. After adjustment, the external connecting columns 2313 on both sides are tightened to lock the locking plates 232 to the sides of the second plate 12. In this way, the platform formed by the first plate 11 and the second plate 12 can be stably placed on the ground. Because the locking plates 232 can change the support height of the second plate 12 according to the changes in their own rotation angle, the safe lifting platform device can also be placed horizontally on uneven ground without the support of other additional objects. It is suitable for use when a drone is conducting geological surveys in rugged terrain, allowing the geological survey drone to be safely raised and lowered in such environments.

[0055] It's worth noting that, in this embodiment, the second panel 12, hinged to the first panel 11, also features a handle-receiving slot 121 for accommodating the handle 14. When the first and second panels 11, 12 are flattened, the handle-receiving slot 121 aligns with the handle assembly slot. This allows the flattened first and second panels 11, 12 to be tilted toward the second panel 12, allowing the handle 14 to slide into the handle-receiving slot 121 under gravity. This allows the handle 14 to rest within the two panels, stabilizing their flattened state. To fold the two panels, the panels are tilted in opposite directions, allowing the handle 14 to exit the handle-receiving slot 121.

[0056] In summary, the present invention discloses a safety lifting platform device for a geological survey drone. The safety lifting platform device is foldable, which can reduce the volume for easy carrying. In addition, it can roll on the ground in the folded state to reduce the difficulty of carrying and improve the portability of the entire safety lifting platform device.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A safe lifting platform device for a geological survey drone, characterized by: The platform assembly comprises a platform component and a support component, wherein the platform assembly comprises a first flat plate and a second flat plate hinged to each other, and the first flat plate and the second flat plate can be folded and flattened relative to each other; There are two groups of support assemblies, each group of support assemblies includes a rolling assembly, a locking assembly and an adjusting assembly; Two rolling assemblies are respectively provided on the left and right sides of the first flat plate, and the rolling assemblies include a roller support, a roller, and a brake movable member. The roller support is fixedly connected to the first flat plate, the roller is rotatably connected to the roller support, and the brake movable member is fixedly connected to the side of the roller close to the first flat plate; Two locking assemblies are respectively provided on the left and right sides of the first flat plate. The locking assemblies include a brake fixed member and an elastic member. The brake fixed member is slidably connected to the roller support member. The sliding direction of the brake fixed member is parallel to the rotation axis of the roller. The elastic member is used to push the brake fixed member toward the brake movable member. When the brake fixed member and the brake movable member are kept engaged under the pushing action of the elastic member, the roller will not be able to rotate relative to the roller support member. Two adjustment components are respectively provided on the left and right sides of the second flat plate. When the first flat plate and the second flat plate are in a folded state, the adjustment components can be combined with the support component to lock the first flat plate and the second flat plate in the folded state. When the adjusting assembly is combined with the supporting assembly, the braking fixed piece will not be combined with the braking movable piece. When the braking fixed piece is not in contact with the braking movable piece, the roller can rotate relative to the roller supporting piece.

2. A safety lifting platform device for a geological survey UAV according to claim 1, characterized in that: The platform assembly also includes a hinged member. The opposite ends of the first plate and the second plate are each provided with a hinged groove. Both ends of the hinged member are hinged in the hinged grooves of the first plate and the second plate respectively.

3. A safety lifting platform device for a geological survey UAV according to claim 1, characterized in that: The platform assembly further includes a handle, which includes a sliding member, a pulling member, and a limiting member, wherein the pulling member is fixed to the upper end of the sliding member, and the limiting member is fixed to the side of the sliding member; The first plate is provided with a handle assembly groove for assembling the handle, and the handle assembly groove includes a sliding member groove, a pulling member receiving groove, and a limiting member groove. The pulling member receiving groove is provided at one end of the first plate hinged to the second plate, the sliding member groove is provided at the bottom of the pulling member receiving groove, and the limiting member groove is provided on the back of the first plate and is connected to the sliding member groove. The sliding member is slidably assembled in the sliding member sliding groove, the limiting member is slidably assembled in the limiting member sliding groove, and the pulling member accommodating groove is used to accommodate the pulling member.

4. A safety lifting platform device for a geological survey UAV according to claim 3, characterized in that: One end of the second flat plate hinged to the first flat plate is provided with a handle receiving groove for receiving the handle. When the first flat plate and the second flat plate are in a mutually flattened state, the handle receiving groove will be aligned with the handle assembly groove.

5. A safety lifting platform device for a geological survey UAV according to claim 1, characterized in that: The roller support comprises a roller shaft and a guide shaft. Both ends of the guide shaft are fixedly connected to the first plate and the guide shaft respectively. The roller is rotatably connected to the roller shaft. The brake fixed piece is slidably connected to the outside of the guide shaft. The brake fixed piece cannot rotate relative to the guide shaft.

6. A safety lifting platform device for a geological survey UAV according to claim 5, characterized in that: The roller support also includes a connecting piece, which is used to be connected to the first flat plate. The guide shaft is fixedly connected to the connecting piece. The elastic piece is sleeved on the outside of the guide shaft and is located between the connecting piece and the brake fixed piece.

7. A safety lifting platform device for a geological survey UAV according to claim 1, characterized in that: The opposite sides of the brake stator and the brake movable member are both circular structures coaxial with the roller. The brake stator has a plurality of fixed meshing teeth arranged in a circular row on the side close to the brake movable member, and the brake movable member has a plurality of movable meshing teeth arranged in a circular row on the side close to the brake stator. The plurality of fixed meshing teeth and the plurality of movable meshing teeth can mesh with each other.

8. A safety lifting platform device for a geological survey UAV according to claim 1, characterized in that: The brake stator has an outer edge plate protruding radially outward at one end away from the roller; The adjustment assembly includes a rotation locking member and a locking plate, wherein the locking plate is rotatably connected to the end of the second flat plate, and the rotation locking member can lock the locking plate at the end of the second flat plate so that the locking plate cannot rotate relative to the second flat plate; A brake stator receiving groove for receiving the brake stator is provided on the side of the lock plate, and the brake stator receiving groove extends along the rotation direction of the lock plate; When the outer end of the outer edge plate abuts against the inner end of the lock plate, the brake fixed member will not be engaged with the brake movable member; When the brake stator is accommodated in the brake stator accommodating groove, the opening of the brake stator accommodating groove faces the second flat plate.

9. A safety lifting platform device for a geological survey UAV according to claim 8, characterized in that: The lock plate includes a plate body and a friction member, wherein the plate body is fixedly connected to the side of the friction member, a brake stator receiving groove is provided on the plate body, and a rotation connection hole is provided on the friction member; The rotation locking member includes an inner connecting column and an outer connecting column. The inner connecting column is fixedly connected to the second plate. The friction member is rotatably connected to the outer side of the inner connecting column through a rotation connection hole. One end of the outer connecting column has an internal threaded hole. The outer connecting column is threadedly connected to the outer side of the inner connecting column through the internal threaded hole. The friction member is located between the outer connecting column and the second plate.

10. A safety lifting platform device for a geological survey UAV according to claim 9, characterized in that: The plate body is further provided with a guide slope on one side of the opening of the brake fixed member receiving groove. When the brake fixed member is combined with the brake movable member, the guide slope can rotate with the plate body to abut against the edge of the outer end of the outer edge plate.

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