Ground transfer equipment for skid type undercarriage helicopter

Abstract

The utility model relates to ground transfer equipment for a skid-type undercarriage helicopter, belongs to the technical field of aerospace, and solves the problems that the posture of the helicopter cannot be corrected and the transfer is unsafe when the conventional skid-type undercarriage helicopter transfer equipment transfers the skid-type undercarriage helicopter on a complex road surface. The transfer device comprises an interface assembly and a transfer wheel set which are oppositely arranged, the interface assembly is arranged on a skid bar of the undercarriage; the interface assembly comprises a connecting piece; the connecting piece comprises an insertion hole; the transfer wheel set comprises a wheel frame, the wheel frame comprises an insertion pipe, the insertion pipe can be inserted into the insertion hole to connect the transfer wheel set to the connecting piece, and the transfer wheel set can move relative to the connecting piece in the circumferential direction of the insertion pipe. According to the helicopter transfer device, the movement of the transfer wheel set relative to the interface assembly in the circumferential direction is supplemented, the posture of a helicopter can be corrected during transfer, and the transfer safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, and in particular to a skid-type landing gear helicopter ground transfer device. Background Technology

[0002] Skid-mounted helicopters cannot be transported on the ground because they do not have wheels.

[0003] Existing ground transfer equipment uses a skid to fix transfer wheels to the landing gear, enabling the ground movement of helicopters with skid-type landing gear. However, the lack of space compensation between the transfer wheels and the landing gear can easily lead to the following problems:

[0004] 1) Uneven ground causes the vehicle to get stuck or tip over;

[0005] 2) Difficult to control posture when turning or under external interference;

[0006] 3) It can also lead to uneven stress on the landing gear and the fuselage, causing wear and tear on components and structural damage.

[0007] Therefore, it is necessary to provide a skid-type landing gear helicopter ground transfer device to solve the problem of insufficient space compensation between the existing transfer wheels and landing gear, which leads to unsafe transfer processes. Utility Model Content

[0008] Based on the above analysis, the present invention aims to provide a ground transfer device for skid-type landing gear helicopters to solve the problem of unsafe ground transfer of skid-type landing gear helicopters.

[0009] The objective of this utility model is mainly achieved through the following technical solutions:

[0010] A skid-type landing gear helicopter ground transfer device is provided, which includes an interface assembly and a transfer wheel set arranged opposite to each other;

[0011] The interface assembly is mounted on the landing gear skid bar; the interface assembly includes a connector, the connector includes a socket; the connector has a first anti-detachment hole.

[0012] The transfer wheel assembly includes a wheel frame and an anti-detachment pin. The wheel frame includes a tube, and a second anti-detachment hole is provided on the tube at a position opposite to the first anti-detachment hole. The tube can be inserted into the tube. The anti-detachment pin passes through the first anti-detachment hole and the second anti-detachment hole to connect the transfer wheel assembly to the connector.

[0013] In the vertical direction, the size of the first anti-detachment hole is larger than the size of the second anti-detachment hole; the anti-detachment pin can move up and down in the first anti-detachment hole to make the transfer wheel assembly rotate clockwise or counterclockwise relative to the connector.

[0014] Furthermore, it also includes a lifting assembly for lifting the interface assembly, thereby causing the skid to lift.

[0015] Furthermore, the lifting assembly includes a pry bar, a lifting end, and a base;

[0016] The pry bar serves as the force-applying end, using the base as a fulcrum, and lifts the interface assembly via the lifting end.

[0017] Furthermore, the pry bar includes a pry bar reinforcement plate, which is disposed on the pry bar.

[0018] Furthermore, it also includes retaining components;

[0019] When a force is applied to the pry bar, the pry bar moves to the skid bar, and the retaining assembly is used to lock the pry bar in that position.

[0020] Furthermore, the retaining assembly includes a retaining interface and a retaining plate;

[0021] The retaining interface component is mounted on the skid bar;

[0022] The retaining plate is disposed on the pry bar, and the retaining plate has a connecting hook; the connecting hook is used to hook the retaining interface to hold the pry bar in the current position.

[0023] Furthermore, the retaining plate is disposed on the pry bar reinforcement plate.

[0024] Furthermore, the connector also includes a mounting through hole and a tongue hole;

[0025] The connector is mounted on the skid rod through the mounting through hole; the tongue hole is used to connect to the lifting end.

[0026] Furthermore, the connector also includes a tongue hole;

[0027] The tongue hole is used to connect to the lifting end.

[0028] Furthermore, the transfer wheel assembly also includes wheels, which are disposed at both ends of the wheel frame.

[0029] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0030] This utility model discloses a skid-type landing gear helicopter ground transfer device, which includes an interface assembly and a transfer wheel assembly arranged opposite each other. The interface assembly is disposed on the skid rod of the landing gear. The interface assembly includes a connector. The connector includes a socket and a first anti-detachment hole. The transfer wheel assembly includes a wheel frame, which includes a tube and an anti-detachment pin. The tube has a second anti-detachment hole. The tube can be inserted into the socket. The anti-detachment pin passes through the first and second anti-detachment holes to connect the transfer wheel assembly to the connector. In the circumferential direction of the tube, the transfer wheel assembly can move relative to the connector. In the vertical direction, the size of the first anti-detachment hole is larger than the size of the second anti-detachment hole. The anti-detachment pin can cooperate with the transfer wheel assembly to move up and down in the first anti-detachment hole, so that the transfer wheel assembly can rotate clockwise or counterclockwise relative to the connector. The transfer wheel assembly and the landing gear can compensate for movement, thereby improving the safety of the transfer.

[0031] (2) The skid-type landing gear helicopter ground transfer equipment described in this utility model has multiple connecting parts symmetrically arranged between the two crossbeams of the landing gear skid rod. When the transfer wheel set is set on the interface assembly, the skid-type landing gear helicopter and the entire transfer equipment structure are stable, which is more conducive to smooth transfer.

[0032] (3) The skid-type landing gear helicopter ground transfer equipment of the present invention has a lifting shaft locked into the tongue hole of the connector, the lifting assembly lifts the connector, the transfer wheel set is connected to the insertion hole of the connector, and the transfer wheel set is set onto the skid rod of the landing gear through the connector; the connection, installation and disassembly process of the ground transfer equipment of the present invention is simple and convenient to operate, and can quickly transfer skid-type landing gear helicopters on the ground.

[0033] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0034] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0035] Figure 1 This is a structural schematic diagram of the skid-type landing gear helicopter ground transfer equipment described above.

[0036] Figure 2 This is one of the structural schematic diagrams of the transfer wheel assembly in the skid-type landing gear helicopter ground transfer equipment described above;

[0037] Figure 3 This is the second structural schematic diagram of the transfer wheel assembly in the skid-type landing gear helicopter ground transfer equipment.

[0038] Figure 4 This is a structural schematic diagram of the connecting component in the skid-type landing gear helicopter ground transfer equipment.

[0039] Figure 5 This is a structural schematic diagram of the transfer wheel assembly and connecting parts in the skid-type landing gear helicopter ground transfer equipment described above;

[0040] Figure 6 This is one of the structural schematic diagrams of the lifting component in the skid-mounted helicopter ground transfer equipment.

[0041] Figure 7 This is the second structural schematic diagram of the lifting component in the skid-type landing gear helicopter ground transfer equipment.

[0042] Figure 8 This is a schematic diagram of the base structure in the skid-type landing gear helicopter ground transfer equipment described above;

[0043] Figure 9 This is a schematic diagram of the structure of the interface component in the skid-type landing gear helicopter ground transfer equipment.

[0044] Figure label:

[0045] 1-Interface component, 11-Connector, 111-Socket, 112-First anti-dislodgement hole, 113-Mounting through hole, 114-Tongue hole;

[0046] 2-Transfer wheel assembly, 21-Wheel frame, 211-Insertion tube, 2111-Second anti-detachment hole, 212-Horizontal plate, 213-Second vertical plate, 22-Anti-detachment pin, 23-Wheel;

[0047] 3-Lifting assembly, 31-Pry bar, 311-Pry bar reinforcing plate, 32-Lifting end, 321-Lifting shaft, 322-Heavy shaft reinforcing plate, 323-Fulcrum, 3231-Axis, 3232-Handling shaft, 33-Base, 331-Support component, 3311-First upright plate, 3312-Support plate, 3313-Reinforcing plate, 332-Rotating shaft, 333-Connecting column;

[0048] 4-Retaining component, 41-Retaining interface component, 411-Connecting plate, 412-Retaining post, 42-Retaining plate, 421-Connecting hook body;

[0049] 5-Skipping bar. Detailed Implementation

[0050] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0051] A specific embodiment of this utility model is as follows: Figures 1 to 5 As shown, a skid-type landing gear helicopter ground transfer device is disclosed, which includes an interface assembly 1 and a transfer wheel set 2 arranged opposite to each other;

[0052] The interface assembly 1 is mounted on the skid bar 5 of the landing gear; the interface assembly 1 includes a connector 11, which includes a socket 111 and a first anti-detachment hole 112;

[0053] The transfer wheel assembly 2 includes a wheel frame 21 and an anti-detachment pin 22. The wheel frame 21 includes a tube 211, and a second anti-detachment hole 2111 is provided on the tube 211 at a position opposite to the first anti-detachment hole 112. The tube 211 can be inserted into the tube 111 with a clearance fit. The anti-detachment pin 22 passes through the second anti-detachment hole 2111 and the first anti-detachment hole 112, connecting the transfer wheel assembly 2 to the connector 11. In the vertical direction, the size of the first anti-detachment hole 112 is larger than the size of the second anti-detachment hole 2111. The anti-detachment pin 22 can move up and down in the first anti-detachment hole 112 to make the transfer wheel assembly 2 rotate clockwise or counterclockwise relative to the connector 11.

[0054] This utility model provides a skid-type landing gear helicopter ground transfer device. By inserting a tube 211 into the insertion hole 111, the transfer wheel set 2 is set on the skid rod 5 of the landing gear. This allows for moderate circumferential rotation between the tube 211 and the insertion hole 111. During the transfer process, the helicopter's attitude is corrected to ensure transfer safety.

[0055] In the embodiments, such as Figures 2 to 5 As shown, the size of the first anti-detachment hole 112 is larger than the size of the second anti-detachment hole 2111, and the anti-detachment pin 22 can move up and down within the first anti-detachment hole 112; for example, the first anti-detachment hole 112 is an elliptical hole or a rectangular hole.

[0056] During the transfer process, when the transfer road surface is bumpy or uneven, and it is necessary to correct the helicopter's attitude, the insertion tube 211 and the insertion hole 111 will rotate appropriately. When correcting the helicopter's attitude, the anti-detachment pin 22 can move in the first anti-detachment hole 112 to achieve circumferential compensation movement, adjust the distance between the landing gear and the transfer wheel set 2, and avoid collision damage to the transfer equipment or the occurrence of helicopter rollover.

[0057] In the embodiments, such as Figure 2As shown, the wheel frame 21 also includes a horizontal plate 212, a second vertical plate 213, and a tube 211. The horizontal plate 212 connects the two wheels 23. The upper end of the second vertical plate 213 is connected to the horizontal plate 212, and the lower end is connected to the tube 211, mainly serving a connecting function. The tube 211 is connected to the interface assembly 1.

[0058] like Figure 1 As shown, four transfer wheel sets 2 are symmetrically arranged on the two skids 5 of the landing gear through the interface component 1; the wheels 23 include omnidirectional wheels and directional wheels. In actual use, wheel frames 21 equipped with different wheels can be connected to the interface component 1 according to the actual use situation.

[0059] When it is necessary to turn in place within a small space or move along complex curves, or when multiple people need to push the wheel in multiple directions for transfer, all wheels 23 in the four transfer wheel sets 2 are casters. The specific structure of the wheel frame 21 and the wheels 23 (casters) is as follows: Figure 2 As shown, all four wheels 23 are swivel casters, which make it easier for multiple people to operate and provide better flexibility in operation.

[0060] When the helicopter needs to follow a predetermined route, and the route is mostly straight with only small-angle turns, then the first two wheels 23 in the four transfer wheel sets 2 are directional wheels (e.g., Figure 3 As shown), the two rear wheels are swivel wheels (as shown). Figure 2 As shown in the figure, the transfer route is highly controllable and accurate, making it easier for operators to control the helicopter to transfer along the predetermined route.

[0061] like Figure 4 As shown, the connector 11 includes a mounting through hole 113 and a tongue hole 114; the connector 11 is mounted on the skid rod 5 through the mounting through hole 113; the tongue hole 114 is used to connect the lifting assembly 3.

[0062] The process of installing the transfer wheel assembly 2 onto the connector 11 is as follows: The lifting shaft 321 in the lifting assembly 3 is engaged with the tongue hole 114 in the connector 11. The support plate 3312 in the base 33 is brought into contact with the ground. The end of the pry bar 31 is pressed down, causing the lifting shaft 321 to lift the connector 11. The connector 11 then lifts the skid bar 5, maintaining its tilted position. Next, the insertion tube 21 is inserted into the insertion hole 111, and the anti-detachment pin 22 is passed through the second anti-detachment hole 2111 and the first anti-detachment hole 112 in sequence, completing the installation of the wheel frame 21.

[0063] In the embodiments, such as Figure 6 , Figure 7 and Figure 8As shown, it also includes a lifting assembly 3, which includes a pry bar 31, a lifting end 32, and a base 33; the pry bar 31 serves as the force-applying end, and the interface assembly 1 is lifted by the lifting end 32 with the base 33 as the fulcrum.

[0064] The base 33 includes support members 331, a rotating shaft 332, and a connecting column 333. Support members 331 are located at both ends of the connecting column 333, with two support members 331 straddling the skid rod 5. Each support member 331 includes a first upright plate 3311, a support plate 3312, and a reinforcing plate 3313. The rotating shaft 332 is located on the upper part of the first upright plate 3311, which is vertically mounted on the support plate 3312. The reinforcing plate 3313 is located between the first upright plate 3311 and the support plate 3312. The lower end face of the support plate 3312 abuts against the ground, transmitting the supporting force to the ground. This ensures that the force borne by the base 33 and all components of the transfer equipment is within the design limits, preventing damage due to excessive force. The base 33 provides a support point for the skid rod 31 to apply force, and by raising the skid rod 5 based on the height of the base 33, sufficient installation space is provided for the transfer wheel assembly 2.

[0065] like Figure 6 As shown, the lifting end 32 includes a lifting shaft 321, a shaft reinforcement plate 322, and a fulcrum portion 323; the lifting shaft 321 is disposed at one end of the shaft reinforcement plate 322, and the fulcrum portion 323 is disposed at the other end of the shaft reinforcement plate 322; the lifting shaft 321 is used to connect to the interface assembly 1; the pry bar 31 is disposed on the fulcrum portion 323.

[0066] The fulcrum 323 in the lifting assembly 3 can rotate around the pivot 332, lifting the pry bar 31 upward and causing the lifting end 32 to move downward, so that the lifting shaft 321 is connected to the interface assembly 1, applying a downward force to the pry bar 31. With the fulcrum 323 as the fulcrum, the lifting end 32 moves upward, and the lifting shaft 321 lifts the interface assembly 1 upward, lifting the skid bar 5, providing installation space for the transfer wheel set 2, making it convenient for workers to install the transfer wheel set 2 onto the interface assembly 1.

[0067] In this embodiment, the fulcrum 323 includes a pivot shaft 3231 and a connecting shaft 3232; the pivot shaft 3231 is rotatably mounted on the rotating shaft 332; and the connecting shaft 3232 is disposed between the pivot shaft 3231 and the lifting shaft 321.

[0068] The pry bar 31 is fixed on the pivot shaft 3231 and the connecting shaft 3232, increasing the area of ​​the fulcrum 323. The larger fulcrum area can reduce the pressure per unit area and prevent the components at the fulcrum from deforming due to excessive pressure. At the same time, it can ensure that the force direction of the pry bar 31 is more accurate, thereby lifting the helicopter more stably and ensuring the safety of equipment use.

[0069] To save manpower and facilitate the installation of the transfer wheel assembly 2, when the lifting assembly 3 raises the skid bar, the skid bar 5 needs to be fixed at the raised height. Furthermore, this utility model also includes a retaining assembly 4, such as... Figure 9 As shown, the retaining assembly 4 includes a retaining interface 41 and a retaining plate 42; the retaining interface 41 is disposed on the skid bar 5; the retaining plate 42 is disposed on the pry bar 31, the pry bar 31 is provided with a pry bar reinforcing plate 311, and the retaining plate 42 is disposed on the pry bar reinforcing plate 311; the retaining plate 42 has a connecting hook 421; when the pry bar 31 moves the skid bar 5, the connecting hook 421 hooks the retaining interface 41, holding the pry bar 31 in the current position.

[0070] In the embodiments, such as Figure 1 and Figure 9 As shown, the retaining interface component 41 includes a connecting plate 411 and a retaining post 412. The connecting plate 411 is semi-hugging and fixed on the sliding bar. Both ends of the connecting plate 411 extend towards the upper end of the sliding bar 5. The retaining post 412 is located at both ends of the connecting plate 411. A certain installation space is left between the retaining post 412 and the sliding bar to facilitate the connecting hook 421 to hook the retaining post 412.

[0071] The lifting assembly 3 includes a pry bar 31, which serves as the force-applying end of the lifting assembly 3, applying a force to the pry bar 31 to move it towards the skid bar 5. Figure 6 As shown, the pry bar 31 is provided with a retaining plate 42 having a connecting hook 421. When the pry bar 31 moves to the position of the sliding pry bar, the retaining plate 42 is positioned opposite to the retaining interface 41, and the connecting hook 421 hooks the retaining interface 41, locking the pry bar 31 in the current position and maintaining the lifting height of the sliding pry bar 5, which facilitates the installation of the rotating wheel assembly onto the interface assembly 1.

[0072] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A skid-type landing gear helicopter ground handling apparatus, characterized in that, The interface assembly (1) and the transfer wheel set (2) are oppositely arranged. The interface assembly (1) is arranged on the skid bar (5) of the landing gear. The interface assembly (1) comprises a connecting piece (11), and the connecting piece (11) comprises a socket (111) and a first anti-falling hole (112). The transfer wheel set (2) comprises a wheel frame (21) and an anti-falling pin (22), the wheel frame (21) comprises a plug pipe (211), and a second anti-falling hole (2111) is arranged on the plug pipe (211) at a position opposite to the first anti-falling hole (112).

2. The skid-type landing gear helicopter ground handling apparatus according to claim 1, characterized in that, The plug pipe (211) can be inserted into the socket (111), and the anti-falling pin (22) passes through the second anti-falling hole (2111) and the first anti-falling hole (112) to connect the transfer wheel set (2) to the connecting piece (11).

3. The skid-type landing gear helicopter ground handling apparatus according to claim 2, characterized in that, In the vertical direction, the size of the first anti-falling hole (112) is greater than the size of the second anti-falling hole (2111), and the up-and-down movement of the anti-falling pin (22) in the first anti-falling hole (112) can make the transfer wheel set (2) rotate clockwise or counterclockwise relative to the connecting piece (11). The hoisting assembly (3) is further arranged for lifting the interface assembly (1) and then lifting the skid bar (5).

4. The skid-type landing gear helicopter ground handling apparatus according to claim 3, characterized in that, The hoisting assembly (3) comprises a crowbar (31), a hoisting end (32) and a base (33).

5. The skid-type landing gear helicopter ground handling apparatus according to claim 4, characterized in that, The crowbar (31) serves as a force applying end, and the base (33) serves as a fulcrum to lift the interface assembly (1) through the hoisting end (32). The crowbar (31) comprises a crowbar reinforcing plate (311) arranged on the crowbar (31).

6. The skid-type landing gear helicopter ground handling apparatus according to claim 5, characterized in that, The retaining assembly (4) is further arranged. When an acting force is applied to the crowbar (31), the crowbar (31) moves to the skid bar (5), and the retaining assembly (4) is used for locking the crowbar (31) at this position. The retaining assembly (4) comprises a retaining interface piece (41) and a retaining plate (42).

7. The skid-type landing gear helicopter ground handling apparatus according to claim 6, characterized in that, The retaining interface piece (41) is arranged on the skid bar (5).

8. The ski-jet helicopter ground transfer device of claim 1, wherein, The retaining plate (42) is arranged on the crowbar (31) and has a connecting hook body (421), and the connecting hook body (421) is used for hooking the retaining interface piece (41) to retain the crowbar (31) at the current position. The retaining plate (42) is arranged on the crowbar reinforcing plate (311).

9. The ski-jet helicopter ground handling apparatus of claim 3, wherein, The connecting piece (11) further comprises a mounting through hole (113). The connecting piece (11) is arranged on the skid bar (5) through the mounting through hole (113).

10. The ski-jet helicopter ground transfer device of claim 1, wherein, The connecting piece (11) further comprises a tongue hole (114). The tongue hole (114) is used for connecting the hoisting end (32). The transfer wheel set (2) further comprises wheels (23) arranged at both ends of the wheel frame (21).

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