An aircraft landing gear support structure suitable for a multi-environment

Abstract

The utility model relates to aviation airplane landing system technical field, concretely to a kind of airplane landing system support structure suitable for polytropic environment, it includes front lift column, wheel fork, front lift wheel, its technical key point is: the wheel axle both ends of front lift wheel are connected with snowshoe bracket, the bottom of two snowshoe brackets is connected with a composite snowshoe in common, composite snowshoe middle part is equipped with the avoidance groove corresponding to front lift wheel, the bottom surface of front lift wheel is lower than the bottom surface of composite snowshoe, the middle part of front lift column is equipped with front hanger, the upper surface of composite snowshoe front part is equipped with front installation rope buckle, rear part is equipped with rear installation rope buckle, front hanger front end and front installation rope buckle between connection have rubber band, the rear end of front hanger and rear installation rope buckle between connection have steel cable. This structure solves the problem that traditional airplane landing system is skidding, subsides in snow environment, so that airplane has the ability of taking off and landing on land and ice and snow pavement, and has good adaptability and stability.

Description

Technical Field

[0001] This utility model relates to the field of aircraft take-off and landing system technology, specifically to a support structure for aircraft take-off and landing systems suitable for amphibious environments. Background Technology

[0002] With the gradual opening up of my country's general aviation sector, the issue of how aircraft can safely take off and land in multi-purpose environments has become particularly prominent.

[0003] Traditional aircraft landing systems have the following problems: they are not capable of taking off and landing simultaneously on land and icy / snowy surfaces. Traditional aircraft tend to slip and their tires sink when taking off and landing in soft snow, which reduces landing stability. Meanwhile, skid-mounted aircraft, which are now widely used in snowy environments, are not suitable for taking off and landing on land or ice. Utility Model Content

[0004] The purpose of this invention is to provide a reasonable and reliable support structure for aircraft take-off and landing systems suitable for amphibious environments. It solves the problem of tire slippage and sinking in traditional aircraft take-off and landing systems in snowy environments, enabling aircraft to take off and land on both land and icy surfaces, with good adaptability and stability.

[0005] The technical solution of this utility model is: A support structure for an aircraft landing system suitable for amphibious environments includes a front landing strut for connection to the aircraft fuselage, a wheel fork connected to the lower end of the front landing strut, and a front landing wheel connected to the wheel fork. The key technical features are: two ends of the axle of the front landing wheel are respectively connected to ski brackets; the bottoms of the two ski brackets are connected to a composite ski; the composite ski has a clearance groove in the middle corresponding to the front landing wheel; the bottom surface of the front landing wheel is lower than the bottom surface of the composite ski; a front hanger is provided in the middle of the front landing strut; a front mounting rope buckle is provided at the front of the upper surface of the composite ski; a rear mounting rope buckle is provided at the rear; a rubber band is connected between the front end of the front hanger and the front mounting rope buckle; and a steel cable is connected between the rear end of the front hanger and the rear mounting rope buckle.

[0006] The aforementioned support structure for an aircraft landing system suitable for amphibious environments includes a clearance groove located on the central axis of a composite skid. Two skid supports are symmetrically arranged on both sides of the clearance groove. There are two front mounting rope buckles, symmetrically arranged on both sides of the central axis of the composite skid. The number of rubber bands is equal to and corresponds one-to-one with the number of front mounting rope buckles. One end of each rubber band is connected to the corresponding front mounting rope buckle, and the other end is connected to the mounting hole at the front end of the front attachment. There are two rear mounting rope buckles, symmetrically arranged on both sides of the central axis of the composite skid. The number of steel cables is equal to and corresponds one-to-one with the number of rear mounting rope buckles. One end of each steel cable is connected to the corresponding rear mounting rope buckle, and the other end is connected to the mounting hole at the rear end of the front attachment.

[0007] The aforementioned support structure for an aircraft landing system suitable for amphibious environments includes two mounting seats spaced apart on the upper outer side wall of the front landing strut. The outer side wall of each mounting seat is provided with mounting ears for connection to the aircraft fuselage, and a ball bearing is connected between the inner side wall of the mounting seat and the front landing strut.

[0008] The aforementioned support structure for an aircraft landing system suitable for amphibious environments includes a front attachment consisting of a first half-clamp and a second half-clamp that are interlocked. The front edge of the first half-clamp is provided with mounting holes for corresponding rubber bands, and the rear edge of the first half-clamp is provided with mounting holes for corresponding steel cables.

[0009] The aforementioned support structure for an aircraft landing system suitable for amphibious environments includes a composite sled plate comprising a polyethylene base plate, a carbon fiber lower plate located above the polyethylene base plate, and a carbon fiber upper plate located above the carbon fiber lower plate. The carbon fiber upper plate has a frame-shaped raised reinforcing structure. The edge of the carbon fiber upper plate is fixedly connected to the carbon fiber lower plate and the polyethylene base plate as a whole. The front mounting rope buckle, the rear mounting rope buckle, and the sled plate bracket are respectively connected and fixed to the frame-shaped raised reinforcing structure of the carbon fiber upper plate.

[0010] The aforementioned support structure for an aircraft landing system suitable for amphibious environments includes a front landing anti-torsion arm connected between the wheel fork and the front landing strut, and a front landing diagonal brace connected to the front landing strut. The other end of the front landing diagonal brace is provided with a connecting seat for connecting to the aircraft fuselage.

[0011] The aforementioned aircraft landing system support structure suitable for amphibious environments includes an aluminum alloy skid bracket with a weight-reducing groove. The upper part of the skid bracket has a support hole corresponding to the axle of the front landing wheel, and the bottom of the skid bracket has a fixing hole for connecting with the composite skid.

[0012] The beneficial effects of this utility model are: 1. The combination structure of the front strut, wheel fork, and front wheel is suitable for take-off and landing on land or ice. The tire of the front wheel can provide support.

[0013] 2. A combined structure consisting of a ski support frame, composite skis, a front attachment, elastic bands, and steel cables is added, suitable for takeoff and landing on snow. The elastic bands constrain the composite skis to be parallel to the fuselage axis during flight, allowing for a certain degree of rotation. During takeoff or landing, the composite skis provide support for gliding on soft snow and maintain low drag. During takeoff and landing, the composite skis, constrained by the elastic bands and steel cables, allow for pitch-direction rotation to maintain parallelism with the snow surface, adapting to varying snow conditions and exhibiting significant adaptability and stability.

[0014] In summary, this invention solves the problem of tire slippage and sinking in traditional aircraft landing systems in snowy environments, enabling aircraft to take off and land on both land and icy surfaces. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a two-dimensional plan view of the present invention; Figure 3 yes Figure 2 Top view; Figure 4 This is a schematic diagram of the connection between the rubber band and the front-mounted rope buckle of this utility model. Figure 5 This is a schematic diagram of the connection between the front-mounted component and the steel cable of this utility model.

[0016] In the diagram: 1. Mounting base, 2. Front support strut, 3. Rubber band, 4. Front wheel, 5. One-piece carbon fiber plate, 6. Ski board bracket, 7. Axle, 8. Wheel fork, 9. Steel cable, 10. Front hanger, 1001. First half clamp, 1002. Second half clamp, 11. Front anti-torsion arm, 12. Front diagonal brace, 13. Front mounting rope buckle, 14. Rear mounting rope buckle, 15. Polyethylene base plate, 16. Countersunk screw, 17. Double-ear bracket nut. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-5 As shown, the aircraft landing system support structure suitable for amphibious environments includes a front landing strut 2 for connection to the aircraft fuselage, a wheel fork 8 connected to the lower end of the front landing strut 2, and a front landing wheel 4 located on the lower inner side of the wheel fork 8 and connected to the wheel fork 8. A front landing anti-torsion arm 11 is connected between the wheel fork 8 and the front landing strut 2. A front landing diagonal brace 12 is also connected to the front landing strut 2, and the other end of the front landing diagonal brace 12 is provided with a connecting seat for connection to the aircraft fuselage.

[0019] In this embodiment, the axle 7 of the front starting wheel 4 is connected to two ski board brackets 6 at both ends. The bottoms of the two ski board brackets 6 are connected to a composite ski board. The composite ski board has a clearance groove in the middle corresponding to the front starting wheel 4, and the bottom surface of the front starting wheel 4 is lower than the bottom surface of the composite ski board. In this embodiment, the clearance groove is located on the central axis of the composite ski board, and the two ski board brackets 6 are symmetrically arranged on both sides of the clearance groove. The opening of the clearance groove makes the composite ski board U-shaped.

[0020] The front support column 2 has a front hanger 10 in the middle. The upper surface of the composite ski board has a front mounting rope buckle 13 at the front and a rear mounting rope buckle 14 at the rear. A rubber band 3 connects the front end of the front hanger 10 to the front mounting rope buckle 13, and a steel cable 9 connects the rear end of the front hanger 10 to the rear mounting rope buckle 14. In this embodiment, there are two front mounting rope buckles 13, symmetrically arranged on both sides of the central axis of the composite ski board. The number of rubber bands 3 is equal to the number of front mounting rope buckles 13 and corresponds one-to-one. One end of each rubber band 3 is connected to the corresponding front mounting rope buckle 13, and the other end is connected to the mounting hole at the front end of the front hanger 10. There are also two rear mounting rope buckles 14, symmetrically arranged on both sides of the central axis of the composite ski board. The number of steel cables 9 is equal to the number of rear mounting rope buckles 14 and corresponds one-to-one. One end of each steel cable 9 is connected to the corresponding rear mounting rope buckle 14, and the other end is connected to the mounting hole at the rear end of the front hanger 10. The front attachment 10 is formed by a first half-clamp 1001 and a second half-clamp 1002 fastened together. The front edge of the first half-clamp 1001 is provided with a mounting hole corresponding to the rubber band 3, and the rear edge of the first half-clamp 1001 is provided with a mounting hole corresponding to the steel cable 9. The distance between the front attachment 10 and the wheel fork 8 is 162mm.

[0021] Two mounting seats 1 are arranged at intervals on the upper outer side wall of the front strut 2. The outer side wall of the mounting seat 1 is provided with mounting ears for connecting to the fuselage of the aircraft. A ball bearing is connected between the inner side wall of the mounting seat 1 and the front strut 2.

[0022] The composite sled board includes a polyethylene base plate 15, a carbon fiber lower plate above the polyethylene base plate 15, and a carbon fiber upper plate 5 above the carbon fiber lower plate. The carbon fiber upper plate 5 has a frame-shaped raised reinforcing structure. The edge of the carbon fiber upper plate 5 is fixedly connected to the carbon fiber lower plate and the polyethylene base plate 15 as a whole. The front mounting rope buckle 13, the rear mounting rope buckle 14, and the sled board bracket 6 are respectively connected and fixed to the frame-shaped raised reinforcing structure of the carbon fiber upper plate 5. Taking the front mounting rope buckle 13 as an example, the front mounting rope buckle 13 is connected and fixed to the frame-shaped raised reinforcing structure of the carbon fiber upper plate 5 using countersunk screws 16 and double-eared bracket nuts 17 to ensure connection stability. See [link to documentation]. Figure 4 The sled support 6 is an aluminum alloy support with a weight-reducing groove. The upper part of the sled support 6 has a support hole corresponding to the axle 7 of the front starting wheel 4, and the bottom of the sled support 6 has a fixing hole for connecting with the composite sled.

[0023] The specific assembly process is as follows: 1. Connect mounting base 1 to the upper part of the front support column 2. After connection, the two can rotate relative to each other.

[0024] 2. Fasten the first half clamp 1001 and the second half clamp 1002 onto the front support column 2 and fix them together with bolts.

[0025] 3. Complete the connection and fixation of the composite sled boards.

[0026] 4. Install the wheel fork 8 to the lower end of the front support strut 2, place the front wheel 4 between the lower part of the wheel fork 8, and pass the wheel axle 7 through the ski bracket 6, wheel fork 8 and front wheel 4 and position it.

[0027] 5. Connect the rubber band 3 between the front installation rope buckle 13 and the front hanging piece 10, and connect the steel cable 9 between the rear installation rope buckle 14 and the front hanging piece 10 to complete the installation.

[0028] The elastic deformation of the rubber band 3 keeps the composite skis parallel to the aircraft's longitudinal axis during flight. For takeoffs and landings on land or ice, the combined structure of the front landing strut 2, wheel fork 8, and front landing wheel 4 provides support. For takeoffs and landings on snow, the composite skis provide support for gliding on soft snow and maintain low drag. The composite skis' gliding angle is constrained by the rubber band 3 and steel cable 9, and the skis can maintain parallelism to the snow surface by rotating in the pitch direction, adapting to the undulating snow conditions.

[0029] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A support structure for an aircraft landing system suitable for amphibious environments, comprising a nose landing strut for connection to the aircraft fuselage, a wheel fork connected to the lower end of the nose landing strut, and a nose landing wheel connected to the wheel fork, characterized in that: The front starting wheel's axle is connected to two ski board brackets at both ends. The bottom of the two ski board brackets is connected to a composite ski board. The composite ski board has a clearance groove in the middle corresponding to the front starting wheel. The bottom surface of the front starting wheel is lower than the bottom surface of the composite ski board. The front support is provided with a front hanger in the middle. The upper surface of the composite ski board has a front mounting rope buckle at the front and a rear mounting rope buckle at the rear. A rubber band is connected between the front end of the front hanger and the front mounting rope buckle, and a steel cable is connected between the rear end of the front hanger and the rear mounting rope buckle.

2. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: The clearance groove is located on the central axis of the composite ski board. Two ski board supports are symmetrically arranged on both sides of the clearance groove. There are two front mounting rope buckles, symmetrically arranged on both sides of the central axis of the composite ski board. The number of rubber bands is equal to the number of front mounting rope buckles and corresponds one-to-one. One end of each rubber band is connected to the corresponding front mounting rope buckle, and the other end is connected to the mounting hole at the front end of the front hanger. There are two rear mounting rope buckles, symmetrically arranged on both sides of the central axis of the composite ski board. The number of steel cables is equal to the number of rear mounting rope buckles and corresponds one-to-one. One end of each steel cable is connected to the corresponding rear mounting rope buckle, and the other end is connected to the mounting hole at the rear end of the front hanger.

3. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: Two mounting seats are arranged at intervals on the upper outer side wall of the front strut. The outer side wall of the mounting seat is provided with mounting ears for connecting to the aircraft fuselage. A ball bearing is connected between the inner side wall of the mounting seat and the front strut.

4. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: The front attachment is formed by a first half clamp and a second half clamp being fastened together. The front edge of the first half clamp is provided with a mounting hole for a corresponding rubber band, and the rear edge of the first half clamp is provided with a mounting hole for a corresponding steel cable.

5. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: The composite sled includes a polyethylene base plate, a carbon fiber lower plate located above the polyethylene base plate, and a carbon fiber upper plate located above the carbon fiber lower plate. The carbon fiber upper plate has a frame-shaped protruding reinforcing structure. The edge of the carbon fiber upper plate is fixedly connected to the carbon fiber lower plate and the polyethylene base plate as a whole. The front rope buckle, the rear rope buckle, and the sled bracket are respectively connected and fixed to the frame-shaped protruding reinforcing structure of the carbon fiber upper plate.

6. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: A front start anti-torsion arm is connected between the wheel fork and the front start strut. A front start diagonal brace is also connected to the front start strut, and the other end of the front start diagonal brace is provided with a connecting seat for connecting to the aircraft fuselage.

7. The aircraft takeoff and landing system support structure suitable for amphibious environments according to claim 1, characterized in that: The sled support is an aluminum alloy support with a weight-reducing groove. The upper part of the sled support has a support hole corresponding to the axle of the front starting wheel, and the bottom of the sled support has a fixing hole for connecting with the composite sled.

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