Helicopter landing on uneven ground aid

Abstract

The application provides a landing auxiliary device for a helicopter on uneven ground, which is divided into a left half-boat and a right half-boat, and each of the left half-boat and the right half-boat comprises a girder 7, a first-class hinge 6, a second-class hinge 4, a third-class hinge 2, a first-class truss 5, a second-class truss 3, a third-class truss 11, a clamping rod 1, a compensation port 17 and a mallet-shaped compensation plate 10; the left half-boat further comprises a left hull 9, an outer concave joint 12 and a threaded cylinder 8; the right half-boat further comprises a right hull 16, an inner concave joint 13, a threaded rocker 15 and a rocker cylinder 14, wherein the left half-boat and the right half-boat are in a half-boat structure, the threaded cylinder 8 of the left half-boat is threadedly matched with the threaded rocker 15 of the right half-boat, and the outer concave joint 12 on the left half-boat is butted and matched with the inner concave joint 13 on the right half-boat, so that the left half-boat and the right half-boat are combined into the auxiliary boat.

Description

Technical Field

[0001] This invention patent belongs to the field of aviation, specifically relating to an auxiliary device for helicopter landing on uneven ground. Background Technology

[0002] Helicopters, with their ability to soar high and reach virtually any terrain, are widely used in agriculture, forestry, fisheries, animal husbandry, tourism, transportation, and the military. However, helicopter landing conditions remain demanding, requiring at least a flat, appropriately sized helipad. Landing on uneven ground is generally discouraged, as the helicopter's handling principles dictate that uneven surfaces could cause it to roll over directly or force a rollover due to a punctured tire. While methods for non-stop single-point landings or hovering operations have been developed for special conditions, the transfer capabilities achievable are significantly reduced compared to traditional landing methods.

[0003] It can be said that the landing conditions of helicopters still limit their usability and the full utilization of their functions in different terrains. This invention aims to design a helicopter landing assistance device, which adds a portable and detachable auxiliary boat under the tires to assist helicopters in landing safely on uneven and easily collapsible ground such as snow, mudflats, soft ground, gravel, mountains, deserts, and unidentified grasslands. Summary of the Invention

[0004] This application provides a helicopter landing aid device for uneven ground, which can tightly wrap around and clamp the helicopter tires, and has good reliability.

[0005] Technical Solution: A helicopter landing aid for uneven ground, the device being divided into a left half-boat and a right half-boat. Both the left and right half-boats include a main beam 7, a primary hinge 6, a secondary hinge 4, a tertiary hinge 2, a primary truss 5, a secondary truss 3, a tertiary truss 11, a clamping rod 1, a compensation port 17, and a hammer-shaped compensation plate 10. The left half-boat also includes a left hull 9, an external concave joint 12, and a threaded cylinder 8. The right half-boat also includes a right hull 16, an internal concave joint 13, a threaded rocker arm 15, and a rocker arm cylinder 14. Wherein:

[0006] The left and right halves of the boat are half-boat shaped structures. The threaded cylinder 8 of the left half and the threaded rocker 15 of the right half are threaded together. The external concave joint 12 on the left half and the internal concave joint 13 on the right half are mated together to realize the combination of the left and right halves into an auxiliary boat.

[0007] The clamping rods 1 of both the left and right halves of the ship are fixed to the corresponding third-level trusses 11. The third-level trusses 11 are hinged to the second-level trusses 3 via the third-level hinges 2. The second-level trusses 3 are hinged to the first-level trusses 5 via the second-level hinges 4. The first-level trusses 5 are hinged to the main beam 7 via the first-level hinges 6. The trusses are symmetrical about the left and right sides with the hinges as the center. The main beam 7 is vertically fixed to the side wall of the ship.

[0008] The threaded cylinder 8 is fixed to the end of the main beam 7 of the left half of the ship, and the threaded rocker cylinder 14 is fixed to the end of the main beam 7 of the right half of the ship. The left and right main beams 7 are at the same level, and the threaded cylinder 8 and the threaded rocker cylinder 14 are at the same level and coaxial.

[0009] Furthermore, the threaded rocker arm 15 includes a threaded rod, a boss, and a rocker arm; the threaded rod is fitted inside the threaded rocker arm cylinder 14, and the threaded rod and the threaded rocker arm cylinder 14 are coaxial; the boss is a disc-shaped partition structure between the threaded rod and the rocker arm, and its diameter is larger than the outer diameter of the threaded rocker arm cylinder 14, and its function is to prevent the rocker arm from sinking into the threaded rocker arm cylinder 14.

[0010] Furthermore, the threaded cylinder 8 has internal threads and the threaded bar has external threads. The thread parameters of the threaded cylinder 8 and the threaded bar are the same. The rocker arm can be manually rotated to rotate the threaded bar, so as to achieve thread engagement between the threaded rocker arm 15 and the threaded cylinder 8.

[0011] Furthermore, the outer sides of the docking portions of the left and right halves of the boat are respectively a concave external joint 12 and a concave internal joint 13, which are connected and fitted together under the action of thread force to achieve the final assembly.

[0012] Furthermore, the inner side of the docking section between the left and right halves of the ship has a notch structure.

[0013] Furthermore, compensation ports 17 are arranged at the bottom of the left and right halves of the boat, and mallet-shaped compensation plates 10 are inserted into the compensation ports 17.

[0014] Furthermore, the hammerhead size of the hammer-shaped compensation plate 10 is larger than the size of the compensation port 17 to prevent the hammer-shaped compensation plate 10 from falling out of the ship.

[0015] Furthermore, the inner core of the clamping rod 1 is made of rigid material to ensure clamping rigidity, and the surface is covered with a soft material to protect the helicopter tire.

[0016] The technical advantages of the helicopter landing aid device provided in this application for uneven ground are as follows:

[0017] 1. This invention achieves the assembly of a helicopter-assisted landing craft by combining only two parts, the left and right halves of the boat, resulting in a simple structure. No additional tools or equipment are required, making it easy to maintain.

[0018] 2. The ingenious structure of this invention can tightly hug and clamp the helicopter tire, ensuring high reliability. The boat-shaped structure and compensation plate design achieve comprehensive tire protection, making it highly practical.

[0019] 3. This invention has low manufacturing complexity, simple assembly method, clear and easy-to-understand usage logic, small size and light weight, convenient loading and transportation, and can be quickly moved and used by a single person. Attached Figure Description

[0020] Figure 1 A schematic diagram of a helicopter landing aid device for uneven ground provided in this application;

[0021] Among them, 1-clamping rod, 2-third-level hinge, 3-second-level truss, 4-second-level hinge, 5-first-level truss, 6-first-level hinge, 7-main beam, 8-threaded cylinder, 9-left hull, 10-hammer-shaped compensation plate, 11-third-level truss, 12-outer concave joint, 13-inner concave joint, 14-rocker cylinder, 15-threaded rocker, 16-right hull, 17-compensation port. Detailed Implementation

[0022] Example 1

[0023] like Figure 1 As shown, this application provides a helicopter landing assistance device for uneven ground. The landing assistance device is divided into a left half-boat and a right half-boat. Both the left and right half-boats include a main beam 7, a primary hinge 6, a secondary hinge 4, a tertiary hinge 2, a primary truss 5, a secondary truss 3, a tertiary truss 11, a clamping rod 1, a compensation port 17, and a hammer-shaped compensation plate 10. The left half-boat also includes a left hull 9, an external concave joint 12, and a threaded cylinder 8. The right half-boat also includes a right hull 16, an internal concave joint 13, a threaded rocker arm 15, and a rocker arm cylinder 14, wherein:

[0024] The left and right halves of the boat are half-boat shaped structures. The threaded cylinder 8 of the left half and the threaded rocker 15 of the right half are threaded together. The external concave joint 12 on the left half and the internal concave joint 13 on the right half are mated together to realize the combination of the left and right halves into an auxiliary boat.

[0025] The clamping rods 1 of both the left and right halves of the ship are fixed to the corresponding third-level trusses 11. The third-level trusses 11 are hinged to the second-level trusses 3 via the third-level hinges 2. The second-level trusses 3 are hinged to the first-level trusses 5 via the second-level hinges 4. The first-level trusses 5 are hinged to the main beam 7 via the first-level hinges 6. The trusses are symmetrical about the left and right sides with the hinges as the center. The main beam 7 is vertically fixed to the side wall of the ship.

[0026] The threaded cylinder 8 is fixed to the end of the main beam 7 of the left half of the ship, and the threaded rocker cylinder 14 is fixed to the end of the main beam 7 of the right half of the ship. The left and right main beams 7 are at the same level, and the threaded cylinder 8 and the threaded rocker cylinder 14 are at the same level and coaxial.

[0027] Specifically, the inner core of the clamping rod 1 is made of rigid material to ensure clamping rigidity, and the surface is covered with a soft material to protect the helicopter tires.

[0028] Specifically, the threaded rocker arm 15 includes a threaded rod, a boss, and a rocker arm; the threaded rod is fitted inside the threaded rocker arm cylinder 14, and the threaded rod and the threaded rocker arm cylinder 14 are coaxial; the boss is a disc-shaped partition structure between the threaded rod and the rocker arm, and its diameter is larger than the outer diameter of the threaded rocker arm cylinder 14, and its function is to prevent the rocker arm from sinking into the threaded rocker arm cylinder 14.

[0029] Specifically, the threaded cylinder 8 has internal threads and the threaded bar has external threads. The thread parameters of the threaded cylinder 8 and the threaded bar are the same. The threaded bar can be rotated by manually turning the rocker arm to achieve thread engagement between the threaded rocker arm 15 and the threaded cylinder 8.

[0030] Specifically, the rocker arm is compactly positioned in the right half of the boat, so that the assembly of the left and right halves of the boat does not rely on other tools and equipment, greatly improving the efficiency of use and maintenance.

[0031] It should be noted that the main function of the main beam 7 is to bear the weight of the structure above it and the internal forces of the structure. The clamping rod 1, through the first-level truss 5, the second-level truss 3, the third-level truss 11 and the hinge structure, first contacts the tire under the action of the thread force. Then the truss and hinge structure adapt to the shape of the tire. As the thread force is continuously applied, it eventually forms a tight embrace and clamps the helicopter tire.

[0032] Specifically, the outer sides of the docking parts of the left and right halves of the boat are respectively the external concave joint 12 and the internal concave joint 13. The joints are mated and fitted together under the action of thread force to achieve the final assembly.

[0033] Specifically, the inner side of the docking section between the left and right halves of the ship has a notch structure.

[0034] It should be noted that because helicopter tires are generally in contact with the ground, and due to the weight of the helicopter, it is impossible to easily lift the tires to achieve a completely seamless fit between the left and right halves of the ship. Therefore, the inner side of the docking section between the left and right halves of the ship has a notch structure.

[0035] Specifically, compensation ports 17 are arranged at the bottom of the left and right halves of the boat, and mallet-shaped compensation plates 10 are inserted into the compensation ports 17.

[0036] It should be noted that after the tire is lifted by the helicopter, the hammer-shaped compensation plate 10 is further inserted into the compensation port 17 under its own weight. The hammer-shaped compensation plates 10 of the left half and the right half of the boat then come into contact with each other and abut against each other, so as to achieve complete protection of the helicopter tire by the auxiliary boat in the landing direction.

[0037] Specifically, the hammerhead size of the hammer-shaped compensation plate 10 is larger than the size of the compensation port 17 to prevent the hammer-shaped compensation plate 10 from falling out of the ship.

[0038] The key features of the helicopter landing aid device on uneven ground provided in this application are:

[0039] 1. The multi-level truss and hinge structure allows the structure to adapt to the shape of the tire under the action of threaded force, and as the threaded force is continuously applied, it eventually forms a tight embrace and clamps the helicopter tire.

[0040] 2. The left and right halves of the boat are connected by threads and a rocker arm is installed inside the boat. The halves can be joined by manually turning the rocker arm. The assembly does not rely on any other tools or equipment.

[0041] 3. The design of the compensation port 17 and the hammer-shaped compensation plate 10 perfectly solves the problem of helicopter tires not being able to be manually lifted. After the tire is lifted with the helicopter, the hammer-shaped compensation plate 10, under its own weight, further inserts into the compensation port 17. The hammer-shaped compensation plates 10 on the left and right halves of the boat then come into contact with each other and abut against each other, thus achieving complete protection of the helicopter tires in the landing direction from the auxiliary vessel. The hammerhead size of the hammer-shaped compensation plate 10 is also larger than the size of the compensation port 17 to prevent the hammer-shaped compensation plate 10 from falling overboard.

[0042] The technical advantages of the helicopter landing aid device provided in this application for uneven ground are as follows:

[0043] 1. This invention achieves the assembly of a helicopter-assisted landing craft by combining only two parts, the left and right halves of the boat, resulting in a simple structure. No additional tools or equipment are required, making it easy to maintain.

[0044] 2. The ingenious structure of this invention can tightly hug and clamp the helicopter tire, ensuring high reliability. The boat-shaped structure and compensation plate design achieve comprehensive tire protection, making it highly practical.

[0045] 3. This invention has low manufacturing complexity, simple assembly method, clear and easy-to-understand usage logic, small size and light weight, convenient loading and transportation, and can be quickly moved and used by a single person.

Claims

1. A helicopter landing aid for uneven ground, characterized in that, The device is divided into a left half-ship and a right half-ship. Both the left and right half-ships include a main beam (7), a primary hinge (6), a secondary hinge (4), a tertiary hinge (2), a primary truss (5), a secondary truss (3), a tertiary truss (11), a clamping rod (1), a compensation port (17), and a hammer-shaped compensation plate (10). The left half-ship also includes a left hull (9), an external concave joint (12), and a threaded cylinder (8). The right half-ship also includes a right hull (16), an internal concave joint (13), a threaded rocker arm (15), and a rocker arm cylinder (14), wherein: The left and right halves of the boat are half-boat shaped structures. The threaded cylinder (8) of the left half and the threaded rocker of the right half are threaded together. The external concave joint (12) on the left half and the internal concave joint (13) on the right half are docked together to realize the combination of the left and right halves as an auxiliary boat. The clamping bars (1) of the left and right halves of the ship are fixed to the corresponding third-level truss (11). The third-level truss (11) is hinged to the second-level truss (3) through the third-level hinge (2). The second-level truss (3) is hinged to the first-level truss (5) through the second-level hinge (4). The first-level truss (5) is hinged to the main beam (7) through the first-level hinge (6). The trusses are symmetrical about the hinges. The main beam (7) is vertically fixed to the side wall of the ship. The threaded cylinder (8) is fixed to the end of the main beam (7) of the left half of the ship, and the threaded rocker cylinder is fixed to the end of the main beam (7) of the right half of the ship. The left and right main beams (7) are horizontal, and the threaded cylinder (8) and the threaded rocker cylinder are horizontal and coaxial.

2. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, A threaded rocker arm includes a threaded rod, a boss, and a rocker arm. The threaded rod is fitted inside a threaded rocker arm cylinder, and the threaded rod and the threaded rocker arm cylinder are coaxial. The boss is a disc-shaped partition structure between the threaded rod and the rocker arm, and its diameter is larger than the outer diameter of the threaded rocker arm cylinder. Its function is to prevent the rocker arm from sinking into the threaded rocker arm cylinder.

3. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The threaded cylinder (8) has internal threads and the threaded bar has external threads. The thread parameters of the threaded cylinder (8) and the threaded bar are the same. The rocker arm is manually rotated to make the threaded bar rotate so as to achieve thread engagement between the threaded rocker arm and the threaded cylinder (8).

4. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The left and right halves of the boat have an external concave joint (12) and an internal concave joint (13) on their outer sides, respectively. The joints are engaged and fitted together under the action of thread force to achieve the final assembly.

5. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The inner side of the docking section between the left and right halves of the ship has a notch structure.

6. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The bottom of the left and right halves of the boat is provided with compensation ports, and a hammer-shaped compensation plate (10) is inserted into the compensation port.

7. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The hammerhead of the hammer-shaped compensation plate (10) is larger than the size of the compensation port to prevent the hammer-shaped compensation plate (10) from falling out of the ship.

8. The helicopter landing aid device for uneven ground according to claim 1, characterized in that, The inner core of the clamping rod (1) is made of rigid material to ensure clamping rigidity, and the surface is wrapped with a soft material to protect the helicopter tire.

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