Airborne simulation rescue helicopter heavy load buffer structure and helicopter

Abstract

The application relates to an air simulation rescue helicopter heavy load buffering structure and a helicopter, and relates to the field of buffering devices. The air simulation rescue helicopter heavy load buffering structure is installed between a walking wheel shaft and a helicopter cabin body, and comprises a shock-absorbing guide sleeve connected to the top of the walking wheel shaft at the bottom and a cabin body welding plate connected to the bottom of the helicopter cabin body at the top. The bottom of the cabin body welding plate is connected with a landing gear spacing column slidably inserted into the shock-absorbing guide sleeve and a landing gear sleeve slidably sleeved outside the shock-absorbing guide sleeve. A polyurethane buffer layer is arranged at the bottom of the shock-absorbing guide sleeve. The air simulation rescue helicopter heavy load buffering structure can effectively improve the buffering effect, reduce the cost of the take-off and landing buffering equipment, increase the stability during landing and reduce the maintenance difficulty of the take-off and landing buffering equipment.

Description

Technical Field

[0001] This application relates to the field of buffer devices, and more specifically, to a heavy-load buffer structure for an aerial simulated rescue helicopter and the helicopter itself. Background Technology

[0002] Rescue helicopter simulation training is an important training subject in helicopter rescue training. The aerial simulated rescue helicopter is the core equipment for rescue helicopter simulation training, and the buffer stability of the aerial simulated rescue helicopter during takeoff and landing is an important parameter indicator.

[0003] Currently, most aerial simulated rescue helicopters use tires as cushioning devices for takeoff and landing, resulting in poor stability during landing and making it difficult to conduct stable and safe helicopter takeoff and landing simulation training for extended periods. A small number use aircraft landing gear, but this is too expensive and difficult to maintain. Utility Model Content

[0004] The purpose of this application is to provide a heavy-load buffer structure and helicopter for aerial simulated rescue helicopters, which can effectively improve the buffering effect, reduce the cost of take-off and landing buffer equipment, increase stability during landing, and reduce the maintenance difficulty of take-off and landing buffer equipment.

[0005] This application is implemented as follows: This application provides a heavy-load buffer structure for an aerial simulated rescue helicopter, installed between the travel wheel axle and the helicopter cabin. It includes a shock-absorbing guide sleeve with its bottom connected to the top of the travel wheel axle and a cabin welding plate with its top connected to the bottom of the helicopter cabin. The bottom of the cabin welding plate is connected to a landing gear spacer that is slidably inserted into the shock-absorbing guide sleeve and a landing gear sleeve that is slidably sleeved on the outside of the shock-absorbing guide sleeve. A polyurethane buffer layer is provided at the bottom of the shock-absorbing guide sleeve.

[0006] In some alternative implementations, a shock-absorbing pad is provided at the bottom of the shock-absorbing guide sleeve, and a polyurethane buffer layer is provided between the shock-absorbing pad and the landing gear spacer.

[0007] In some alternative implementations, the bottom surface of the landing gear spacer and the top surface of the shock-absorbing pad are respectively provided with upper and lower slots for engaging the top and bottom of the polyurethane buffer layer.

[0008] In some alternative implementations, the outer wall of the landing gear sleeve is provided with diagonal bracing for connecting to the bottom of the helicopter cabin.

[0009] In some alternative implementations, the outer wall of the shock-absorbing guide sleeve is hinged with a lower hinge plate, and the outer wall of the landing gear sleeve is hinged with an upper hinge plate, the lower hinge plate and the upper hinge plate being hinged by a pivot.

[0010] In some alternative implementations, weight reduction holes are provided on both the lower hinge plate and the upper hinge plate.

[0011] In some alternative implementations, a retaining pin is also included. The outer wall of the landing gear sleeve is provided with a connecting cylinder that communicates with its inner wall. A retaining hole is provided on the shock-absorbing guide sleeve. The retaining pin is used to connect and fix the landing gear sleeve and the shock-absorbing guide sleeve by passing through the connecting cylinder and the retaining hole in sequence.

[0012] In some alternative implementations, the landing gear spacers have cavities inside.

[0013] In some alternative implementations, the bottom of the walking wheel axle is connected to the walking wheel traction sleeve via a connecting plate.

[0014] This application also provides a helicopter that includes the aforementioned heavy-load buffer structure for an aerial simulation rescue helicopter.

[0015] The beneficial effects of this application are: The heavy-load buffer structure of the aerial simulated rescue helicopter provided by this application is installed between the walking wheel axle and the helicopter cabin, including a shock-absorbing guide sleeve connected to the top of the walking wheel axle at the bottom and a cabin welding plate connected to the bottom of the helicopter cabin at the top. The bottom of the cabin welding plate is connected to a landing gear spacer that is slidably inserted into the shock-absorbing guide sleeve and a landing gear sleeve that is slidably sleeved on the outside of the shock-absorbing guide sleeve. A polyurethane buffer layer is provided at the bottom of the shock-absorbing guide sleeve. The heavy-load buffer structure for aerial simulated rescue helicopters provided in this application connects a shock-absorbing guide sleeve and a cabin welding plate to the top of the traveling wheel axle and the bottom of the helicopter cabin, respectively. The cabin welding plate is slidably connected to the shock-absorbing guide sleeve through the landing gear spacers and landing gear sleeves. A polyurethane buffer layer is installed inside the shock-absorbing guide sleeve. When the traveling wheel axle is subjected to impact force, relative sliding can occur between the shock-absorbing guide sleeve and the landing gear spacers and landing gear sleeves. The polyurethane buffer layer buffers and reduces the stress transmitted from the shock-absorbing guide sleeve to the landing gear spacers and landing gear sleeves, thereby effectively improving the buffering effect, reducing the cost of takeoff and landing buffer equipment, increasing stability during landing, and reducing the maintenance difficulty of takeoff and landing buffer equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the heavy-load buffer structure of the aerial simulated rescue helicopter provided in the embodiments of this application; Figure 2This is a partial cross-sectional view of the heavy-load buffer structure of the aerial simulated rescue helicopter provided in an embodiment of this application.

[0018] In the diagram: 100, shock-absorbing guide sleeve; 110, cabin welding plate; 120, landing gear spacer; 121, upper slot; 130, landing gear sleeve; 140, polyurethane buffer layer; 150, shock-absorbing pad; 151, lower slot; 160, diagonal brace; 170, lower hinge plate; 180, upper hinge plate; 190, pivot; 200, weight-reducing hole; 210, fixing pin; 220, connecting cylinder; 230, fixing hole; 240, cavity; 250, connecting plate; 260, traveling wheel traction sleeve; 300, traveling wheel axle; 400, traveling wheel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following describes in further detail the heavy-load buffer structure of the aerial simulated rescue helicopter and the features and performance of the helicopter in this application, with reference to the embodiments.

[0027] like Figure 1 and Figure 2 As shown, this application embodiment provides a heavy-load buffer structure for an aerial simulated rescue helicopter, which is installed between the walking wheel axle 300 and the helicopter cabin to play a buffering role. A walking wheel 400 is connected to each end of the walking wheel axle 300. The heavy-load buffer structure of the aerial simulated rescue helicopter includes a shock-absorbing guide sleeve 100 connected to the top of the walking wheel axle 300 at the bottom, a cabin welding plate 110 connected to the bottom of the helicopter cabin at the top, and a fixing pin 210. The bottom of the cabin welding plate 110 is connected to a landing gear spacer 120 that is slidably inserted into the shock-absorbing guide sleeve 100 and a landing gear sleeve 130 that is slidably sleeved on the outside of the shock-absorbing guide sleeve 100. The landing gear spacer 120 has a cylindrical cavity 240 inside. The bottom of the shock-absorbing guide sleeve 100 has a shock-absorbing pad 150 and a polyurethane buffer layer 140 located above the shock-absorbing pad 150. The bottom surface of the landing gear spacer 120 and the top surface of the shock-absorbing pad 150 are respectively provided with an upper slot 121 and a lower slot 151 for engaging the top and bottom of the polyurethane buffer layer 140.

[0028] One outer wall of the landing gear sleeve 130 is provided with a diagonal brace 160 for connecting to the bottom of the helicopter cabin. The diagonal brace 160 is a hollow tubular structure. The other outer wall of the landing gear sleeve 130 is hinged to an upper hinge plate 180 via a rotating shaft. The outer wall of the shock-absorbing guide sleeve 100 is hinged to a lower hinge plate 170 via a rotating shaft. The lower hinge plate 170 and the upper hinge plate 180 are hinged to each other via a rotating shaft 190. Weight reduction holes 200 are respectively provided on the lower hinge plate 170 and the upper hinge plate 180.

[0029] The outer wall of the landing gear sleeve 130 is provided with a connecting cylinder 220 that communicates with its inner wall. The shock-absorbing guide sleeve 100 is provided with a fixing hole 230 that passes through its inner and outer walls. The fixing pin 210 is used to pass through the connecting cylinder 220 and the fixing hole 230 in sequence to connect and fix the landing gear sleeve 130 and the shock-absorbing guide sleeve 100. The bottom of the travel wheel axle 300 is connected to the travel wheel traction sleeve 260 through the connecting plate 250.

[0030] This application embodiment also provides a helicopter, which includes a helicopter cabin and the above-mentioned heavy-load buffer structure for air-simulated rescue helicopter. The cabin welding plate 110 and the diagonal brace 160 of the heavy-load buffer structure for air-simulated rescue helicopter are respectively connected to the bottom of the helicopter cabin. The shock-absorbing guide sleeve 100 of the heavy-load buffer structure for air-simulated rescue helicopter is connected to the top of the travel wheel axle 300. A travel wheel 400 is connected to each end of the travel wheel axle 300.

[0031] The heavy-load buffer structure for aerial simulated rescue helicopters provided in this application embodiment is installed between the running wheel axle 300 and the helicopter cabin to provide a buffering effect. Its working principle is as follows: When the helicopter equipped with the heavy-load buffer structure for aerial simulated rescue helicopters lands, the running wheel 400 contacts the ground and receives stress, which is transmitted to the running wheel axle 300. This causes the running wheel axle 300 and the shock-absorbing guide sleeve 100 connected to the top of the running wheel axle 300 to be subjected to stress. Subsequently, due to inertia, the helicopter cabin and the cabin welding plate 110 connected to the bottom of the helicopter cabin continue to drive the landing gear spacer 120 and the landing gear sleeve 130 to slide downward relative to the shock-absorbing guide sleeve 100. This causes the landing gear spacer 120 to press down on the polyurethane buffer layer 140 inside the shock-absorbing guide sleeve 100. Thus, the polyurethane buffer layer 140 absorbs the pressure energy during the helicopter landing process. At the same time, the shock-absorbing pad 150 on top of the polyurethane buffer layer 140 provides shock absorption and buffering, allowing the helicopter to land smoothly.

[0032] The landing gear sleeve 130 has a diagonal brace 160 on one side of its outer wall for connecting to the bottom of the helicopter cabin. The diagonal brace 160 can serve as an auxiliary buffer structure to provide shock absorption. When the polyurethane buffer layer 140 in the shock-absorbing guide sleeve 100 reaches its limit, the diagonal brace 160 can provide a certain amount of buffering. The landing gear sleeve 130 has an upper hinge plate 180 hinged to its outer wall, and the shock-absorbing guide sleeve 100 has a lower hinge plate 170 hinged to its outer wall. The lower hinge plate 170 and the upper hinge plate 180 are hinged together by a pivot 190. During helicopter landing, when the landing gear sleeve 130 slides downward relative to the shock-absorbing guide sleeve 100, it causes the lower hinge plate 170 and the upper hinge plate 180 to rotate relative to each other. This utilizes the rotational friction between the lower hinge plate 170 and the upper hinge plate 180 and the pivot 190 to distribute stress and dampen the impact force of the landing gear sleeve 130 sliding downward relative to the shock-absorbing guide sleeve 100, effectively improving the shock absorption and cushioning effect. The lower hinge plate 170 and the upper hinge plate 180 are respectively provided with weight-reducing holes 200, which can reduce the weight of the lower hinge plate 170 and the upper hinge plate 180; the landing gear spacer 120 has a cavity 240 inside, which can also reduce weight.

[0033] The bottom surface of the landing gear spacer 120 and the top surface of the shock-absorbing pad 150 are respectively provided with upper slots 121 and lower slots 151 for engaging the top and bottom of the polyurethane buffer layer 140. The upper slots 121 and lower slots 151 on the bottom surface of the landing gear spacer 120 and the top surface of the shock-absorbing pad 150 can be used to engage and limit the position of the polyurethane buffer layer 140, ensuring that the polyurethane buffer layer 140 can stably withstand pressure deformation and play a buffering role.

[0034] The outer wall of the landing gear sleeve 130 is provided with a connecting cylinder 220 that communicates with its inner wall. The shock-absorbing guide sleeve 100 has a fixing hole 230 that penetrates its inner and outer walls. A fixing pin 210 is used to connect and fix the landing gear sleeve 130 and the shock-absorbing guide sleeve 100 by passing through the connecting cylinder 220 and the fixing hole 230 in sequence. When the helicopter is parked and not being used for simulation experiments, the fixing pin 210 can be passed through the connecting cylinder 220 and the fixing hole 230 in sequence to lock the landing gear sleeve 130 and the shock-absorbing guide sleeve 100 in a fixed position. When a take-off and landing simulation experiment is required, the fixing pin 210 can be pulled out of the connecting cylinder 220 and the fixing hole 230 to release the locking of the landing gear sleeve 130 and the shock-absorbing guide sleeve 100. The bottom of the traveling wheel axle 300 is connected to a traveling wheel traction sleeve 260 through a connecting plate 250, which allows vehicles to easily use the traveling wheel traction sleeve 260 to connect to the traction axle and move the helicopter.

[0035] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A heavy-load buffer structure for an aerial simulated rescue helicopter, installed between the walking wheel axle and the helicopter cabin, characterized in that, It includes a shock-absorbing guide sleeve with its bottom connected to the top of the walking wheel axle and a cabin welding plate with its top connected to the bottom of the helicopter cabin. The bottom of the cabin welding plate is connected to a landing gear spacer that is slidably inserted into the shock-absorbing guide sleeve and a landing gear sleeve that is slidably sleeved on the outside of the shock-absorbing guide sleeve. A polyurethane buffer layer is provided at the bottom of the shock-absorbing guide sleeve.

2. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, The bottom of the shock-absorbing guide sleeve is provided with a shock-absorbing pad, and the polyurethane buffer layer is provided between the shock-absorbing pad and the landing gear spacer.

3. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 2, characterized in that, The bottom surface of the landing gear spacer and the top surface of the shock-absorbing pad are respectively provided with upper and lower slots for engaging the top and bottom of the polyurethane buffer layer.

4. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, The outer wall of the landing gear sleeve is provided with diagonal bracing for connecting to the bottom of the helicopter cabin.

5. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, The outer wall of the shock-absorbing guide sleeve is hinged with a lower hinge plate, and the outer wall of the landing gear sleeve is hinged with an upper hinge plate. The lower hinge plate and the upper hinge plate are hinged together by a pivot.

6. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 5, characterized in that, Weight reduction holes are respectively provided on the lower hinge plate and the upper hinge plate.

7. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, It also includes a fixing pin, and the outer wall of the landing gear sleeve is provided with a connecting cylinder that communicates with its inner wall. The shock-absorbing guide sleeve is provided with a fixing hole. The fixing pin is used to pass through the connecting cylinder and the fixing hole in sequence to connect and fix the landing gear sleeve and the shock-absorbing guide sleeve.

8. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, The landing gear spacer has a cavity inside.

9. The heavy-load buffer structure for aerial simulated rescue helicopters according to claim 1, characterized in that, The bottom of the walking wheel axle is connected to the walking wheel traction sleeve via a connecting plate.

10. A helicopter, characterized in that, It includes a heavy-load buffer structure for an aerial simulated rescue helicopter as described in any one of claims 1 to 9.

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