CN114348271B - Stable lifting device for helicopter rescue - Google Patents
Stable lifting device for helicopter rescue Download PDFInfo
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- CN114348271B CN114348271B CN202210034378.8A CN202210034378A CN114348271B CN 114348271 B CN114348271 B CN 114348271B CN 202210034378 A CN202210034378 A CN 202210034378A CN 114348271 B CN114348271 B CN 114348271B
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Abstract
The invention discloses a stable lifting device for helicopter rescue, which comprises a base frame, wherein two symmetrical screw rods are arranged on two sides of the inside of the base frame, one end of each screw rod is provided with a rotating head, a rotating head thread penetrates through the side wall of the base frame to extend into the inside and is connected with the screw rods, a winding component is arranged on the base frame, a connecting component is arranged between the base frame and the winding component, a supporting component is arranged on the winding component and is used for driving the supporting component to move, so that the supporting component ascends or descends, and the supporting component is used for supporting survivors. According to the invention, the screw rods are enabled to move in the base frame through rotating the rotating head, the base frame is enabled to be fixed on the helicopter by supporting the upper side of the helicopter through the four screw rods, the supporting component is enabled to descend through the winding component, after the supporting component descends to the lowest position, the survivor is supported through the supporting component, when the survivor is stable in shape, the winding component is enabled to drive the supporting component to ascend, the survivor is enabled to ascend to a proper height, and the survivor is driven to move through the helicopter.
Description
Technical Field
The invention belongs to the technical field of rescue helicopter accessories, and particularly relates to a stable lifting device for helicopter rescue.
Background
The rescue helicopter is used for emergency rescue, can reach the operation site inaccessible to water and land more quickly, performs the work of searching and rescue, material transportation, aerial command and the like, is the most effective emergency rescue commonly adopted by a plurality of countries in the world, and needs to use a lifting device when a survivor needs to be rescued.
However, when the existing lifting device is installed, the lifting device can only be used in cooperation with a helicopter of a fixed type, the application range of the device is limited, and when a survivor is not needed to be rescued, the trafficability of the helicopter is greatly reduced due to the fact that the lifting device is installed at the bottom of the helicopter, so that when rescue work is not carried out, the lifting device is required to be disassembled, but the device is required to be disassembled only by disassembling a large number of fixed structures by the traditional device, the disassembling difficulty of the device is greatly increased, the disassembling efficiency of the device is reduced, the survivor cannot timely enter the carriage when physically is poor, a large amount of time is required to enter the carriage, the rescue difficulty is greatly increased, and the rescue efficiency is reduced.
Disclosure of Invention
The invention aims to provide a stable lifting device for helicopter rescue, which is used for solving the problems that the application range of the device provided in the background art is limited, the dismounting efficiency of the device is low and survivors cannot enter a carriage in time.
In order to achieve the above purpose, the present invention provides the following technical solutions: the stable lifting device for helicopter rescue comprises a base frame, wherein two symmetrical screw rods are arranged on two sides of the inside of the base frame, a rotating head is arranged at one end of each screw rod, and threads of the rotating head penetrate through the side wall of the base frame and extend to the inside to be connected with the screw rods;
install the rolling subassembly on the bed frame, and install coupling assembling between bed frame and the rolling subassembly, install supporting component on the rolling subassembly, and the rolling subassembly is used for driving the supporting component and removes, makes supporting component rise or descend, supporting component is used for supporting survivors.
Preferably, the coupling assembling includes two cardboard, and the bottom of two cardboard is symmetrical connection respectively in the both ends of bed frame outside bottom surface, two install the bottom plate between the bottom of cardboard, and offered the side groove on two cardboard, the curb plate is all installed to the tip that the bottom plate is close to two cardboard, the curb plate can insert side inslot joint and connect, the winding subassembly sets up the bottom surface at the bottom plate.
Preferably, the mounting grooves are formed in two sides, close to the side grooves, of the clamping plate, springs are mounted in the mounting grooves, one ends of the springs are connected to the bottom wall of the mounting grooves, the other ends of the springs are connected with inserting rods, pull rods are mounted on one sides of the inserting rods, slots are formed in two sides of the side plates, and the ends, away from the springs, of the inserting rods can be inserted into the slots to be connected in a clamping mode.
Preferably, the winding assembly comprises two motors which are symmetrically arranged, the two motors are fixed on the bottom surface of the bottom plate, each winding roller is arranged at the output end of each motor, a steel cable is wound on each winding roller, connecting rods are arranged at one ends of the steel cables, far away from the winding rollers, of the two winding rollers, connecting rings are arranged at one ends of the connecting rods, and the connecting rods are connected with the supporting assembly through the connecting rings.
Preferably, the support assembly comprises a carriage body, a base ring is arranged at the top of the carriage body, and two base rings are respectively connected with two connecting rings.
Preferably, two first electric putter are all installed to the both sides of the railway carriage or compartment body, four install the roof between the flexible end of first electric putter, the connecting plate that two symmetries set up is installed to the roof bottom, and two connecting plates all pass the railway carriage or compartment body and extend to the outside of railway carriage or compartment body bottom, two install the base plate between the connecting plate bottom.
Preferably, the auxiliary plates are arranged on two sides of the substrate, the bottoms of the two auxiliary plates are respectively hinged to two sides of the substrate, one sides of the two connecting plates are respectively hinged to two second electric push rods, the connecting frames are respectively arranged on two opposite side surfaces of the auxiliary plates, and the telescopic ends of the second electric push rods are connected with the connecting frames at the end portions, far away from the auxiliary plates, of the connecting frames.
Preferably, the ventilation plate is arranged on the carriage body, and a plurality of evenly distributed ventilation holes are formed in the ventilation plate.
Preferably, a rubber pad is arranged at the top end inside the base frame, and an anti-skid convex pattern is formed on the surface of the rubber pad.
Preferably, a guide ring is arranged on one side of the motor, and the steel cable penetrates through the guide ring to be connected with the connecting ring.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, the base frame is arranged below the helicopter, the rotating head is rotated, so that the rotating head drives the screw rod to rotate, the screw rod moves in the base frame, the screw rod props against the upper part of the helicopter, and the base frame is fixed on the helicopter, so that the device can be matched with different types of helicopters for use, and the effect of improving the application range of the device is achieved.
(2) According to the invention, the side plates are clamped with the side grooves, the inserting rods are pushed by the springs to be inserted into the slots in the side plates, so that the bottom plate is fixed between the two clamping plates, and when the bottom plate needs to be disassembled, the inserting rods are pulled to separate the inserting rods from the side plates, so that the bottom plate can be taken out from between the two clamping plates, and when a user needs to disassemble the lifting device, the user can disassemble the device without disassembling a large number of fixing structures, thereby greatly reducing the disassembling difficulty of the device and improving the disassembling efficiency of the device.
(3) According to the invention, the first electric push rod drives the top plate to move, so that the connecting plate drives the base plate to move, and the base plate drives the survivors to move into the carriage body, so that the survivors can enter the carriage body in time when the physical strength of the survivors is poor, the time is saved, the rescue difficulty is greatly reduced, and the rescue efficiency is improved.
(4) On the basis of the beneficial effects, the auxiliary plate rotates around the base plate by pulling the connecting frame through the second electric push rod, so that the auxiliary plate is unfolded, survivors enter the carriage body respectively, the survivors enter the carriage body quickly by lifting the base plate, the time for the survivors to enter the carriage body is further saved, the rescue difficulty is reduced, and the rescue efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention with the auxiliary plate removed;
FIG. 3 is a side view of the car of the present invention;
FIG. 4 is a side view of the auxiliary plate of FIG. 3 after deployment;
FIG. 5 is an internal structural view of FIG. 3;
FIG. 6 is a top view of the base frame of the present invention;
fig. 7 is an enlarged view of the portion a in fig. 1;
fig. 8 is an enlarged view of the portion B in fig. 2;
FIG. 9 is a top view of the guide ring of the present invention attached to a steel cord;
FIG. 10 is a side view of the card of the present invention attached to a base plate;
FIG. 11 is an internal structural view of FIG. 10;
in the figure: 1. a rod; 2. a carriage body; 3. a connecting ring; 4. a motor; 5. a top plate; 6. a connecting plate; 7. a bottom plate; 8. a screw; 9. turning the head; 10. a base frame; 11. a connecting rod; 12. a base ring; 13. a first electric push rod; 14. a ventilation plate; 15. an auxiliary plate; 16. a substrate; 17. a connecting frame; 18. a second electric push rod; 19. a rubber pad; 20. a side groove; 21. a clamping plate; 22. a pull rod; 23. a side plate; 24. a wire rope; 25. a guide ring; 26. a wind-up roll; 27. a slot; 28. a mounting groove; 29. and (3) a spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, the present invention provides the following technical solutions:
the utility model provides a helicopter rescue is with stable elevating gear, includes bed frame 10, and the inside both sides of bed frame 10 all are equipped with two screw rods 8 of two symmetries, and swivel 9 is installed to the one end of every screw rod 8, and swivel 9 screw thread runs through the lateral wall of bed frame 10 and extends to inside and be connected with screw rod 8.
Install the rolling subassembly on the bed frame 10, and install coupling assembling between bed frame 10 and the rolling subassembly, install supporting component on the rolling subassembly, and the rolling subassembly is used for driving the supporting component and removes, makes supporting component rise or descend, and supporting component is used for supporting the survivor. Wherein, the top inside the base frame 10 is provided with a rubber pad 19, and the surface of the rubber pad 19 forms anti-skid convex lines.
When the device is used, the base frame 10 is placed below a helicopter, the rotating head 9 is rotated, the screw rod 8 is driven to rotate through the rotating head 9, the screw rod 8 moves in the base frame 10, the four screw rods 8 are propped against the upper part of the helicopter, the screw rods 8 are matched, the base frame 10 is fixed on the helicopter, the base frame 10 is fastened after being fixed under the action of the rubber pad 19 and the anti-slip convex patterns, the support assembly is enabled to descend through the work of the rolling assembly, after the support assembly descends to the lowest position, a survivor is supported by the support assembly, after the survivor is stable in shape, the rolling assembly drives the support assembly to ascend, the survivor is enabled to ascend to a proper height, and the survivor can be driven to move through the helicopter.
Specifically, coupling assembling includes two cardboard 21, and the bottom of two cardboard 21 is symmetrical connection respectively at the both ends of bed frame 10 outside bottom surface, installs bottom plate 7 between the bottom of two cardboard 21, and has seted up side groove 20 on two cardboard 21, and bottom plate 7 is close to the tip of two cardboard 21 and all installs curb plate 23, and curb plate 23 can insert side groove 20 internal joint and connect, and the winding subassembly setting is in the bottom surface of bottom plate 7. The bottom plate 7 is placed between the two clamping plates 21, and is inserted into the side grooves 20 through the side plates 23 to be clamped, so that the bottom plate 7 is fixed between the two clamping plates 21, and the winding assembly is fixed on the bottom surface of the bottom plate 7, so that the winding assembly is fixed.
Mounting grooves 28 are formed in two sides, close to the side grooves 20, of the clamping plate 21, springs 29 are mounted in the mounting grooves 28, one end of each spring 29 is connected to the bottom wall of the mounting groove 28, the other end of each spring 29 is connected with an inserting rod 1, a pull rod 22 is mounted on one side of each inserting rod 1, slots 27 are formed in two sides of each side plate 23, and the ends, far away from the springs 29, of each inserting rod 1 can be inserted into the slots 27 to be connected in a clamping mode. The spring 29 is supported by the mounting groove 28, so that the spring 29 presses and pushes the inserting rod 1, the end part of the inserting rod 1 far away from the spring 29 is inserted into the slot 27 in the side plate 23, and the bottom plate 7 is more firmly connected with the clamping plate 21.
The winding assembly comprises two motors 4 which are symmetrically arranged, the two motors 4 are fixed on the bottom surface of the bottom plate 7, winding rollers 26 are arranged at the output end of each motor 4, steel ropes 24 are wound on the winding rollers 26, connecting rods 11 are arranged at one ends, far away from the winding rollers 26, of the two steel ropes 24, connecting rings 3 are arranged at one ends of the two connecting rods 11, and the connecting rods 11 are connected with the supporting assembly through the connecting rings 3. The motor 4 drives the wind-up roller 26 to change the extending length of the steel cable 24, so as to lift the supporting component.
The support assembly comprises a carriage body 2, two base rings 12 are arranged at the top of the carriage body 2, and the two base rings 12 are respectively connected with the two connecting rings 3. Two first electric putter 13 are all installed to the both sides of railway carriage or compartment body 2, install roof 5 between the flexible end of four first electric putter 13, and connecting plate 6 that two symmetries set up are installed to roof 5 bottom, and two connecting plates 6 all pass railway carriage or compartment body 2 and extend to the outside of railway carriage or compartment body 2 bottom, install base plate 16 between two connecting plate 6 bottoms, and base plate 16 is used for supporting the survivor. The height of the top plate 5 is changed by extending or shortening the extension shaft of the first electric push rod 13, and the substrate 16 is lifted and lowered.
The both sides of base plate 16 all are equipped with auxiliary plate 15, and the bottom of two auxiliary plates 15 is articulated respectively in the both sides of base plate 16 and is connected, and one side of two connecting plates 6 all articulates and is connected with two second electric putter 18, and link 17 is all installed to two opposite sides of two auxiliary plates 15, and the flexible end and the link 17 of second electric putter 18 keep away from the end connection of auxiliary plate 15. The extension of the extension shaft of the second electric push rod 18 enables the two auxiliary plates 15 to be unfolded, so that survivors can enter the device conveniently; the retraction of the second electric push rod 18 to extend the shaft allows the two auxiliary plates 15 to retract, thereby protecting survivors from falling.
Further, the carriage body 2 is provided with a ventilation plate 14, a plurality of evenly distributed ventilation holes are arranged on the ventilation plate 14,
further, a guide ring 25 is installed at one side of the motor 4, and a wire rope 24 is connected with the connection ring 3 through the guide ring 25. The guide ring 25 guides the wire rope 24 to prevent the wire rope 24 from shaking.
When the anti-skid screw device is used, the base frame 10 is placed below a helicopter, the rotating head 9 is rotated, the screw rod 8 is driven to rotate through the rotating head 9, the screw rod 8 moves in the base frame 10, the four screw rods 8 prop against the upper part of the helicopter, the base frame 10 is fixed on the helicopter, and the base frame 10 is fastened after being fixed under the action of the rubber pad 19 and the anti-skid ribs; then, the bottom plate 7 is placed between the two clamping plates 21, the bottom plate 7 is clamped with the side plates 23 through the side grooves 20, the bottom plate 7 is fixed between the two clamping plates 21, the springs 29 are supported through the mounting grooves 28, the springs 29 are used for pushing the inserting rods 1 in a pressing mode, the inserting rods 1 are inserted into the inserting grooves 27 in the side plates 23, the bottom plate 7 and the clamping plates 21 are connected more firmly, the motor 4 is fixed below the bottom plate 7, the winding roller 26 is driven to rotate through the motor 4, the winding roller 26 is used for unwinding, the steel ropes 24 are stretched, and therefore the connecting rings 3, the connecting rods 11 and the base rings 12 are lowered, and after the carriage body 2 is lowered to the lowest position; then drive link 17 through second electric putter 18 and remove, make accessory board 15 rotate around base plate 16 and expand, make the survivor stand on base plate 16, drive roof 5 through first electric putter 13 and remove, and then drive connecting plate 6 and remove to make base plate 16 rise, make the survivor remove to the carriage body 2 inside, the helicopter removes, can drive the survivor and remove.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A stable lifting device for helicopter rescue is characterized in that: the device comprises a base frame (10), wherein two symmetrical screw rods (8) are arranged on two sides of the inside of the base frame (10), a rotating head (9) is arranged at one end of each screw rod (8), and threads of the rotating head (9) penetrate through the side wall of the base frame (10) and extend to the inside to be connected with the screw rods (8);
the device comprises a base frame (10), a winding component, a connecting component, a supporting component and a supporting component, wherein the winding component is arranged on the base frame (10), the connecting component is arranged between the base frame (10) and the winding component, the supporting component is arranged on the winding component and used for driving the supporting component to move so as to enable the supporting component to ascend or descend, and the supporting component is used for supporting survivors;
the connecting assembly comprises two clamping plates (21), the bottom ends of the two clamping plates (21) are respectively and symmetrically connected to two ends of the outer bottom surface of the base frame (10), a bottom plate (7) is arranged between the bottom ends of the two clamping plates (21), side grooves (20) are formed in the two clamping plates (21), side plates (23) are arranged at the end parts, close to the two clamping plates (21), of the bottom plate (7), the side plates (23) can be inserted into the side grooves (20) to be connected in a clamping mode, and the winding assembly is arranged on the bottom surface of the bottom plate (7);
the winding assembly comprises two symmetrically arranged motors (4), the two motors (4) are fixed on the bottom surface of a bottom plate (7), a winding roller (26) is arranged at the output end of each motor (4), a steel cable (24) is wound on the winding roller (26), connecting rods (11) are arranged at one ends, far away from the winding roller (26), of the two steel cables (24), connecting rings (3) are arranged at one ends of the two connecting rods (11), and the connecting rods (11) are connected with the supporting assembly through the connecting rings (3);
the support assembly comprises a carriage body (2), two base rings (12) are arranged at the top of the carriage body (2), and the two base rings (12) are respectively connected with the two connecting rings (3); two first electric putter (13) are all installed to the both sides of railway carriage or compartment body (2), four install roof (5) between the flexible end of first electric putter (13), connecting plate (6) that two symmetries set up are installed to roof (5) bottom, and two connecting plates (6) all pass railway carriage or compartment body (2) and extend to the outside of railway carriage or compartment body (2) bottom, two install base plate (16) between connecting plate (6) bottom.
2. The stabilized elevating device for helicopter rescue as claimed in claim 1, wherein: mounting grooves (28) are formed in two sides, close to the side grooves (20), of the clamping plate (21), springs (29) are arranged in the mounting grooves (28), one ends of the springs (29) are connected to the bottom wall of the mounting grooves (28), inserting rods (1) are connected to the other ends of the springs, pull rods (22) are arranged on one sides of the inserting rods (1), inserting grooves (27) are formed in two sides of each side plate (23), and the ends, far away from the springs (29), of the inserting rods (1) can be inserted into the inserting grooves (27) respectively to be connected in a clamping mode.
3. The stabilized elevating device for helicopter rescue as claimed in claim 1, wherein: the utility model discloses a motor vehicle, including base plate (16), auxiliary plate (15), connecting plate (17) are all installed to both sides that auxiliary plate (16) both sides all are equipped with auxiliary plate (15), two the bottom of auxiliary plate (15) is articulated in the both sides of base plate (16) respectively and is connected, two one side of connecting plate (6) all articulates and is connected with two second electric putter (18), two connecting frame (17) are all installed to the both sides that auxiliary plate (15) are relative, the expansion end and the connecting frame (17) of second electric putter (18) keep away from the end connection of auxiliary plate (15).
4. The stabilized elevating device for helicopter rescue as claimed in claim 1, wherein: the novel car is characterized in that the car body (2) is provided with a ventilation plate (14), and a plurality of ventilation holes which are uniformly distributed are formed in the ventilation plate (14).
5. The stabilized elevating device for helicopter rescue as claimed in claim 1, wherein: a rubber pad (19) is arranged at the top end inside the base frame (10), and anti-skid ribs are formed on the surface of the rubber pad (19).
6. The stabilized elevating device for helicopter rescue as claimed in claim 1, wherein: a guide ring (25) is arranged on one side of the motor (4), and the steel cable (24) penetrates through the guide ring (25) to be connected with the connecting ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210034378.8A CN114348271B (en) | 2022-01-13 | 2022-01-13 | Stable lifting device for helicopter rescue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210034378.8A CN114348271B (en) | 2022-01-13 | 2022-01-13 | Stable lifting device for helicopter rescue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114348271A CN114348271A (en) | 2022-04-15 |
| CN114348271B true CN114348271B (en) | 2023-08-04 |
Family
ID=81109339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210034378.8A Active CN114348271B (en) | 2022-01-13 | 2022-01-13 | Stable lifting device for helicopter rescue |
Country Status (1)
| Country | Link |
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| CN (1) | CN114348271B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537679A (en) * | 2022-04-02 | 2022-05-27 | 中国人民解放军陆军特色医学中心 | Helicopter rescue is with stabilizing elevating gear |
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| US5190250A (en) * | 1991-09-04 | 1993-03-02 | United Technologies Corporation | Autonomous, heliborne-mobile construction/emergency pod system |
| CN102781779A (en) * | 2010-02-01 | 2012-11-14 | 达特航天有限公司 | Helicopter cargo basket mounting assembly and method of using same |
| JPWO2013035174A1 (en) * | 2011-09-07 | 2015-03-23 | 三菱電機株式会社 | Elevator equipment |
| JP2018057613A (en) * | 2016-10-06 | 2018-04-12 | エアボーンシステムス株式会社 | Basket for helicopter to transport person |
| CN109866934A (en) * | 2019-02-15 | 2019-06-11 | 广州市石门国家森林公园管理处(广州市大岭山林场) | Helicopter fire-fighting gondola for forest fire protection |
| CN111015690A (en) * | 2019-12-31 | 2020-04-17 | 三峡大学 | High-voltage transmission line rescue robot and using method thereof |
| CN212709996U (en) * | 2020-08-06 | 2021-03-16 | 大连欧亚直升机有限公司 | A but, corner hanging flower basket for helicopter rescue |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5780043B2 (en) * | 2011-08-05 | 2015-09-16 | ブラザー工業株式会社 | Liquid ejection device |
| US11858636B2 (en) * | 2018-11-09 | 2024-01-02 | The Government of the United States of America, as represented by the Secretary of Homeland Security | Rescue basket |
-
2022
- 2022-01-13 CN CN202210034378.8A patent/CN114348271B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190250A (en) * | 1991-09-04 | 1993-03-02 | United Technologies Corporation | Autonomous, heliborne-mobile construction/emergency pod system |
| CN102781779A (en) * | 2010-02-01 | 2012-11-14 | 达特航天有限公司 | Helicopter cargo basket mounting assembly and method of using same |
| JPWO2013035174A1 (en) * | 2011-09-07 | 2015-03-23 | 三菱電機株式会社 | Elevator equipment |
| JP2018057613A (en) * | 2016-10-06 | 2018-04-12 | エアボーンシステムス株式会社 | Basket for helicopter to transport person |
| CN109866934A (en) * | 2019-02-15 | 2019-06-11 | 广州市石门国家森林公园管理处(广州市大岭山林场) | Helicopter fire-fighting gondola for forest fire protection |
| CN111015690A (en) * | 2019-12-31 | 2020-04-17 | 三峡大学 | High-voltage transmission line rescue robot and using method thereof |
| CN212709996U (en) * | 2020-08-06 | 2021-03-16 | 大连欧亚直升机有限公司 | A but, corner hanging flower basket for helicopter rescue |
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| Publication number | Publication date |
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| CN114348271A (en) | 2022-04-15 |
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