Front artificial leg for helicopter

Abstract

The front artificial leg for the helicopter comprises a working box, a motor is fixedly installed at the top of an inner cavity of the working box, a first gear is fixedly installed at the output end of the motor, second gears are installed on the two sides of the front surface of the first gear in a meshed mode, threaded rods are fixedly installed on the inner surfaces of the second gears, and the threaded rods are connected with the first gear. Threaded sleeves are installed on the front surfaces of the threaded rods in a threaded mode, damping boxes are fixedly installed at the ends, close to each other, of the threaded sleeves, and springs are fixedly installed on one sides of inner cavities of the damping boxes. According to the technical scheme, the problems that an existing front artificial leg for the helicopter does not have an automatic adjusting function, if steps, pits or slopes exist at landing points, a landing gear with a fixed height may cause inclination of a helicopter body, even one side is suspended to lose balance, and when the helicopter moves on the ground (such as traction or short-distance sliding), the helicopter body cannot be adjusted automatically are solved. If encountering an obstacle, the robot needs to depend on external force to bypass and cannot directly cross by adjusting the height of the wheel.

Description

Technical Field

[0001] This utility model relates to the field of helicopter technology, specifically to a front prosthetic leg for helicopters. Background Technology

[0002] The outstanding features of helicopters are their ability to perform low-altitude (a few meters above the ground), low-speed (starting from hovering), and constant nose-direction maneuvering. In particular, they can take off and land vertically in small areas. Due to these characteristics, they have a wide range of applications and development prospects. In the military field, they have been widely used for ground attack, air assault, weapons transport, logistical support, battlefield medical care, reconnaissance and patrol, command and control, communications, anti-submarine warfare and mine clearance, electronic warfare, etc. However, the existing helicopters with front prosthetic legs do not have the function of automatic adjustment. If there are steps, potholes or slopes at the landing point, the fixed-height landing gear may cause the fuselage to tilt, or even lose balance due to one side being suspended in the air. When the helicopter is moving on the ground (such as towing or short-distance taxiing), if it encounters obstacles (such as rocks or cables), it must rely on external force to go around them and cannot directly cross them by adjusting the wheel height. Utility Model Content

[0003] The purpose of this invention is to provide a front prosthetic leg for helicopters, which has the advantage of automatic adjustment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a front prosthetic leg for helicopters, comprising a working box, a motor fixedly installed at the top of the inner cavity of the working box, a first gear fixedly installed at the output end of the motor, second gears meshing on both sides of the positive surface of the first gear, a threaded rod fixedly installed on the inner surface of the second gear, a threaded sleeve threadedly installed on the positive surface of the threaded rod, and a shock-absorbing box fixedly installed at one end of the threaded sleeve that is close to each other.

[0005] As a preferred embodiment, mounting plates are fixedly installed on all four sides of the top of the work box, and mounting holes are provided on the top of the mounting plates.

[0006] As a preferred embodiment, the work box has doors movably installed on both sides of its front surface, and handles are fixedly installed on the ends of the front surfaces of the doors that are close to each other.

[0007] As a preferred embodiment, guide rails are fixedly installed on both sides of the bottom of the working box cavity, and guide rods are slidably installed in the inner cavity of the guide rails, with the top of the guide rods fixedly installed on the bottom of the threaded sleeve.

[0008] As a preferred embodiment, a damper is fixedly installed on one side of the inner cavity of the shock absorber box, and the left end of the damper is fixedly installed on the right end of the support plate.

[0009] As a preferred embodiment, slide rails are fixedly installed on both sides of the inner cavity of the shock absorber box, and slide rods are slidably installed in the inner cavity of the slide rails, with one side of the slide rods fixedly installed on both sides of the support plate.

[0010] As a preferred embodiment, bearings are fixedly installed on both sides of the inner cavity of the working box, and the two sides of the threaded rod are movably installed in the inner cavity of the bearings.

[0011] As a preferred embodiment, a spring is fixedly installed on one side of the inner cavity of the shock absorber box, a support plate is fixedly installed on the left end of the spring, a fixing rod is fixedly installed on the left end of the support plate, a connecting bracket is fixedly installed at the bottom of the fixing rod, and a caster wheel is movably installed at the bottom of the connecting bracket via the bracket.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention solves the problem that existing helicopter front prosthetic legs do not have an automatic adjustment function. If there are steps, potholes or slopes at the landing point, the fixed-height landing gear may cause the fuselage to tilt or even lose balance due to one side being suspended in the air. When the helicopter is moving on the ground (such as towing or short-distance taxiing), if it encounters obstacles (such as rocks or cables), it must rely on external force to bypass them and cannot directly cross them by adjusting the wheel height. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a perspective view of the working box structure of this utility model;

[0016] Figure 3 This is a partial sectional view of the working box of this utility model;

[0017] Figure 4 This is a cross-sectional view of the shock absorber box structure of this utility model.

[0018] In the diagram: 1. Work box; 2. Bracket; 3. Casters; 4. Handle; 5. Door; 6. Mounting hole; 7. Mounting plate; 8. First gear; 9. Second gear; 10. Guide rail; 11. Guide rod; 12. Shock absorber box; 13. Threaded rod; 14. Threaded sleeve; 15. Motor; 16. Damper; 17. Spring; 18. Slide rail; 19. Slide rod; 20. Support plate; 21. Fixing rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] Example 1:

[0022] Please see Figures 1-4 As shown, this utility model provides a front prosthetic leg for helicopters, including a working box 1. A motor 15 is fixedly installed on the top of the inner cavity of the working box 1. A first gear 8 is fixedly installed on the output end of the motor 15. A second gear 9 is meshed on both sides of the front surface of the first gear 8. A threaded rod 13 is fixedly installed on the inner surface of the second gear 9. A threaded sleeve 14 is threadedly installed on the front surface of the threaded rod 13. A shock absorber box 12 is fixedly installed at one end of the threaded sleeve 14 that is close to each other.

[0023] This technical solution solves the problems of existing helicopter front prosthetic legs lacking automatic adjustment capabilities, the fixed-height landing gear potentially causing the fuselage to tilt or even lose balance due to one side being suspended in the air if the landing point has steps, potholes, or slopes, and the helicopter needing to rely on external force to bypass obstacles such as rocks or cables when moving on the ground, such as towing or short-distance gliding, instead of being able to directly cross them by adjusting the wheel height.

[0024] Example 2:

[0025] Based on Embodiment 1, this utility model is as follows: Figure 1 and Figure 2 As shown, mounting plates 7 are fixedly installed on all four sides of the top of the work box 1. Mounting holes 6 are opened on the top of the mounting plates 7. Doors 5 are movably installed on both sides of the front surface of the work box 1. Handles 4 are fixedly installed on the close ends of the front surfaces of the doors 5. Guide rails 10 are fixedly installed on both sides of the bottom of the inner cavity of the work box 1. Guide rods 11 are slidably installed in the inner cavity of the guide rails 10. The top of the guide rods 11 is fixedly installed on the bottom of the threaded sleeves 14.

[0026] By adopting the above technical solution, the installation plate 7 and the installation hole 6 make it easy for users to install the device. The door 5 and the handle 4 make it easy for users to perform daily maintenance on the work box 1. The guide rail 10 and the guide rod 11 achieve the effect of limiting the threaded sleeve 14.

[0027] Example 3:

[0028] This utility model is as follows Figures 3-4 As shown, a damper 16 is fixedly installed on one side of the inner cavity of the shock absorber box 12. The left end of the damper 16 is fixedly installed on the right end of the support plate 20. Slide rails 18 are fixedly installed on both sides of the inner cavity of the shock absorber box 12. A slide rod 19 is slidably installed in the inner cavity of the slide rail 18. One side of the slide rod 19 is fixedly installed on both sides of the support plate 20. Bearings are fixedly installed on both sides of the inner cavity of the working box 1. The two sides of the threaded rod 13 are movably installed in the inner cavity of the bearings. A spring 17 is fixedly installed on one side of the inner cavity of the shock absorber box 12. A support plate 20 is fixedly installed on the left end of the spring 17. A fixing rod 21 is fixedly installed on the left end of the support plate 20. A connecting bracket 2 is fixedly installed at the bottom of the fixing rod 21. A caster wheel 3 is movably installed at the bottom of the connecting bracket 2 via the bracket.

[0029] By adopting the above technical solution, the slide rail 18 and slide rod 19 are set to achieve the effect of multiple support for the support plate 20. The damper 16 is set to reduce the vibration of the support plate 20. The bearing is set to reduce the wear of the threaded rod 13 and increase the service life of the threaded rod 13.

[0030] The working principle of this utility model is as follows: When the helicopter needs to adjust the working state of the front prosthetic leg, the motor 15 at the top of the inner cavity of the working box 1 is started. The motor 15 starts to run, and its output end drives the fixedly installed first gear 8 to rotate. Since both sides of the front surface of the first gear 8 are meshed with the second gear 9, the rotation of the first gear 8 will drive the two second gears 9 to rotate synchronously in opposite directions. When the second gear 9 rotates, the threaded rod 13 fixedly installed inside it also rotates. Because the threaded rod 13 and the threaded sleeve 14 are threadedly connected, the rotation of the threaded rod 13 causes the threaded sleeve 14 to move along the axial direction of the threaded rod 13. The two threaded sleeves 14 move closer or further away from each other, thereby driving the shock absorber 12 fixed at one end to move, realizing the adjustment of the length of the front prosthetic leg to suit the needs of the helicopter. To adapt to different working scenarios, such as adjusting the height of the prosthetic leg when a helicopter takes off and lands in different terrains, when the helicopter encounters bumps during takeoff, landing, or flight, the impact force is transmitted to the fixed rod 21 through the connecting bracket 2. The fixed rod 21 pushes the support plate 20 to compress the spring 17 in the shock absorber box 12. The spring 17 deforms under force, converting mechanical energy into elastic potential energy, which plays a role in buffering and shock absorption, reducing the impact of bumps on the helicopter fuselage, and protecting the internal equipment and structure of the helicopter. The universal wheels 3, which are movably installed at the bottom of the connecting bracket 2, allow the front prosthetic leg of the helicopter to move flexibly on the ground, facilitating short-distance position adjustments of the helicopter on the ground. Furthermore, during helicopter takeoff and landing, the universal wheels 3 can also assist in adjusting the attitude, improving the stability and operational flexibility of the helicopter.

[0031] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A prosthetic leg for helicopters, comprising a work box (1), characterized in that: A motor (15) is fixedly installed on the top of the inner cavity of the working box (1). A first gear (8) is fixedly installed on the output end of the motor (15). A second gear (9) is meshed on both sides of the front surface of the first gear (8). A threaded rod (13) is fixedly installed on the inner surface of the second gear (9). A threaded sleeve (14) is threaded on the front surface of the threaded rod (13). A shock absorber box (12) is fixedly installed at one end of the threaded sleeve (14) that is close to each other.

2. The prosthetic leg for helicopters according to claim 1, characterized in that: Mounting plates (7) are fixedly installed on all four sides of the top of the work box (1), and mounting holes (6) are provided on the top of the mounting plates (7).

3. The prosthetic leg for helicopters according to claim 1, characterized in that: Both sides of the front surface of the work box (1) are movably installed with doors (5), and handles (4) are fixedly installed at the ends of the front surfaces of the doors (5) that are close to each other.

4. The prosthetic leg for helicopters according to claim 1, characterized in that: Guide rails (10) are fixedly installed on both sides of the bottom of the inner cavity of the work box (1). A guide rod (11) is slidably installed in the inner cavity of the guide rail (10). The top of the guide rod (11) is fixedly installed on the bottom of the threaded sleeve (14).

5. A prosthetic leg for helicopters according to claim 1, characterized in that: A damper (16) is fixedly installed on one side of the inner cavity of the shock absorber box (12), and the left end of the damper (16) is fixedly installed on the right end of the support plate (20).

6. A prosthetic leg for helicopters according to claim 1, characterized in that: The shock absorber box (12) has slide rails (18) fixedly installed on both sides of its inner cavity. A slide rod (19) is slidably installed in the inner cavity of the slide rail (18). One side of the slide rod (19) is fixedly installed on both sides of the support plate (20).

7. A prosthetic leg for helicopters according to claim 1, characterized in that: Bearings are fixedly installed on both sides of the inner cavity of the working box (1), and the two sides of the threaded rod (13) are movably installed in the inner cavity of the bearings.

8. A prosthetic leg for helicopters according to claim 1, characterized in that: A spring (17) is fixedly installed on one side of the inner cavity of the shock absorber box (12). A support plate (20) is fixedly installed on the left end of the spring (17). A fixing rod (21) is fixedly installed on the left end of the support plate (20). A connecting bracket (2) is fixedly installed at the bottom of the fixing rod (21). A caster wheel (3) is movably installed at the bottom of the connecting bracket (2) via a bracket.

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