Handrail device and handrail assembly for transportation type test aircraft

Abstract

The utility model relates to a handrail device used for a transportation type test airplane, the handrail device comprises a handrail and a handrail joint component, the handrail joint component is installed on the handrail device, the handrail device further comprises a first joint, and the first joint is installed on a fuselage structure of the transportation type test airplane; one end of the first pull rod is connected to the first connector, and the other end of the first pull rod is connected to the armrest connector component; the second joint is mounted on the fuselage structure; one end of the second pull rod is connected to the second connector, and the other end of the second pull rod is connected to the armrest connector component; the third joint is mounted on the fuselage structure; one end of the third pull rod is connected to the third connector, the other end of the third pull rod is connected to the handrail connector component, and the first pull rod, the second pull rod and the third pull rod are not coplanar. The utility model further relates to a handrail assembly comprising a plurality of handrail devices.

Description

Technical Field

[0001] The utility model relates to the field of transport test aircraft, and in particular to an armrest device for transport test aircraft. The utility model also relates to an armrest assembly for transport test aircraft. Background Art

[0002] A significant design difference between transport aircraft and fighter jets is that they lack emergency escape routes in the event of a loss of control. In particular, when conducting high-risk flight tests, transport aircraft must be equipped with emergency escape routes to ensure the crew can quickly evacuate the aircraft in the event of a loss of control.

[0003] Typically, the entire evacuation system includes indicator lights, auxiliary handrails, parachute devices, etc. The auxiliary handrails for emergency escape are installed on both sides of the top of the cabin escape passage to solve the problem of test flight crew members being unable to move quickly when the aircraft's attitude is unstable.

[0004] In the prior art, there is a handrail system that mainly consists of a mounting member and a handrail rod. The mounting member is installed on the wall on both sides, and the handrail rod and the mounting member are hinged. However, the disadvantage of this handrail system is that it can only provide support in a certain direction. The flight state of test aircraft is complex and the aircraft posture is not fixed. Therefore, the emergency escape handrail on the test aircraft needs to provide support in multiple directions.

[0005] There are also emergency exit handrails that are fixed to floor rails. However, this device has the drawback of being able to only be attached to flat surfaces such as the floor, which places it at a disadvantage. Furthermore, test aircraft carry out diverse mission requirements, and the cabin is equipped with various equipment, all of which must be fixed to floor rails. This makes it impossible to install emergency exit handrails on these rails, thus leaving cabin space unused.

[0006] Therefore, an emergency escape auxiliary handrail device for transport aircraft is currently desired, which can provide support in multiple directions and free up cabin space, no longer occupying slide rails, and meet the needs of test flight missions. Utility Model Content

[0007] In order to solve the problem that transport test aircraft do not have emergency escape devices for rapid evacuation of personnel, the utility model discloses an armrest assembly for transport test aircraft, which is adapted to the emergency escape auxiliary armrest structure of multiple models of domestic transport aircraft and can solve the problem of rapid and safe evacuation of test flight crew members when the aircraft attitude is unstable. In addition, this

[0008] Specifically, the armrest device includes an armrest and an armrest joint component, which is installed on the armrest. The armrest device also includes a first joint and a first tie rod, the first joint is installed on the fuselage structure of the transport test aircraft, one end of the first tie rod is connected to the first joint, and the other end is connected to the armrest joint component; a second joint and a second tie rod, the second joint is installed on the fuselage structure, and one end of the second tie rod is connected to the second joint, and the other end is connected to the armrest joint component; and a third joint and a third tie rod, the third joint is installed on the fuselage structure, and one end of the third tie rod is connected to the third joint, and the other end is connected to the armrest joint component, wherein the first tie rod, the second tie rod and the third tie rod are not coplanar.

[0009] In an embodiment of the present invention, the first and second joints are mounted on the frame of the fuselage structure, and the third joint is mounted on the stringer of the fuselage structure. This mounting method enables the combination of joints and tie rods to provide support in multiple directions, making the structure more stable.

[0010] Advantageously, at least one of the first joint, the second joint, and the third joint has multiple connection points. Designing multiple connection points can adjust the relative installation angles between the tie rods to adapt to fuselage panels with different curvatures.

[0011] In an embodiment of the present invention, the first joint and the first pull rod, the second joint and the second pull rod, and the third joint and the third pull rod are rotatably connected via a rotating shaft, so that the installation angle of the pull rod can be easily adjusted after the joints are fixed.

[0012] In an embodiment of the present invention, the armrest joint assembly includes a first armrest joint and a second armrest joint, wherein the first, second, and third pull rods are connected to the first armrest joint. This configuration of the armrest joint assembly allows the three pull rods to be connected to the first armrest joint first, and then the second armrest joint 42 is connected to the first armrest joint 41, thereby facilitating installation of the armrest assembly.

[0013] Optionally, the first handrail joint and the second handrail joint are connected together by bolts.

[0014] In one embodiment, the handrail and the first pull rod, the second pull rod, and the third pull rod are made of stainless steel.

[0015] In one embodiment, the first joint, the second joint, the third joint and the armrest joint member are made of aluminum alloy.

[0016] The present invention also discloses a handrail assembly for a transport test aircraft, comprising a plurality of the aforementioned handrail devices for transport test aircraft. The modular handrail devices allow the total handrail length of the handrail assembly to be adjusted by installing different numbers of handrail devices, thereby meeting the requirements of emergency escape passages of varying lengths.

[0017] Preferably, the armrests of the armrest arrangement are mounted together via armrest joint members.

[0018] Additional features and advantages of the described sealing device for an aircraft aerodynamic surface will be set forth in the following detailed description, which includes the following detailed description and the accompanying drawings, and will become apparent to those skilled in the art from the following description or from practicing the embodiments described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] With reference to the above objects, the technical features of the present invention are clearly described in the following claims, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which show preferred embodiments of the present invention by way of example without limiting the scope of the concept of the present invention.

[0020] Figure 1 An axonometric view of an armrest device for a transport test aircraft according to an embodiment of the present invention is shown;

[0021] Figure 2 Shown Figure 1 A detailed axonometric view of the portion of the handrail assembly enclosed by circle A for a transport category test aircraft;

[0022] Figure 3 Shown Figure 1 A detailed axonometric drawing of the portion of the handrail assembly enclosed in circle B for a transport category test aircraft;

[0023] Figure 4 Shown Figure 1 A detailed axonometric view of the portion of the handrail assembly enclosed by circle C for a transport category test aircraft;

[0024] Figure 5 An axonometric view showing an armrest assembly for a transport-category test aircraft according to an embodiment of the present invention; and

[0025] Figure 6 Shown Figure 5 A detailed axonometric view of the portion in circle D of the armrest assembly for a transport category test aircraft.

[0026] Reference numerals

[0027] 1. Handrail device

[0028] 2 frames

[0029] 3 long stringers

[0030] 4 armrests

[0031] 11 First joint

[0032] 12 First tie rod

[0033] 13 connection points

[0034] 21 Second connector

[0035] 22 Second pull rod

[0036] 31 Third joint

[0037] 32 third tie rod

[0038] 40 handrail joint components

[0039] 41 First handrail joint

[0040] 42 Second handrail joint

[0041] 50 armrest assembly

[0042] 60 bolts. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.

[0044] The term "heading" used in this article refers to the direction in which an aircraft is heading during normal flight, and can also be understood as the longitudinal direction of the fuselage.

[0045] The term "lateral" as used herein refers to a direction perpendicular to the heading direction. Lateral may include vertical (along the direction of gravity) and transverse (perpendicular to the heading direction and vertical).

[0046] As used herein, the term "fuselage structure" refers collectively to the components that make up the fuselage of an aircraft, including panels, stringers, and frames. Those skilled in the art will appreciate that stringers are structural components along the heading direction, while frames are structural components perpendicular to the heading direction, i.e., lateral structural components.

[0047] As used herein, the term "horizontal joint" refers to a joint fixed to a stringer of the aircraft's fuselage structure, while "horizontal tie rod" refers to a tie rod connected to the vertical joint. Similarly, "lateral joint" refers to a joint fixed to a frame of the aircraft's fuselage structure, while "lateral tie rod" refers to a tie rod connected to the lateral joint.

[0048] The term "connected" as used herein may include a direct connection between two objects as well as an indirect connection between two objects via other components.

[0049] The term "connection point" used herein refers to the portion of the joint that is connected to the tie rod. For example, the connection point of the joint can be a hole opened on the joint, such as Figure 2 The examples shown are not intended to be limiting.

[0050] In this document, when describing the "coplanarity" of several tie rods, these tie rods are considered to be line segments with mass along their lengths and their volumes are ignored.

[0051] The purpose of the utility model is to provide a quick and directional emergency passage from the cockpit or the cabin to the emergency exit during emergency leaving the aircraft, so as to assist the crew members to move in a turbulent environment and to enable them to quickly move from the working area to the parachuting position through the leaving passage.

[0052] The core technology of this utility model patent lies in the design of a set of truss-type emergency handrails, the height and strength of which meet the use requirements and load requirements for emergency exit. The emergency escape handrail structure is assembled and connected through articulated joints, and adopts a modular design concept. The total length of the handrail can be adjusted according to the number of sub-modules installed to meet the requirements of emergency escape passages of different lengths. Compared with existing patents, this solution does not require the design of complex special parts, the structure is quick to disassemble and assemble, and the cost is controllable. A "radial" pull rod assembly layout is adopted, and the handrail pull rod and fixed joint are connected to the upper fuselage wall panel in a suspended form. Three pull rods of different lengths are used at each handle rod fixing point to connect to the frame and long stringer of the fuselage structure. According to the actual scene requirements, the relative angles between the pull rods can be adjusted to adapt to fuselage wall panels with different curvatures.

[0053] Although the armrest device of the present invention is used for a transport test aircraft, those skilled in the art will appreciate that the armrest device can also be used in other types of aircraft. For the sake of simplicity, the armrest device of the present invention will be described below based on the environment of a transport test aircraft.

[0054] Figure 1 The isometric view of an armrest device 1 for a transport test aircraft according to an embodiment of the present invention is shown. The armrest device 1 is connected to a frame 2 and a long stringer 3 by means of three tie rods and corresponding joints. Figure 2-4 Describe these three sets of joints and tie rods separately.

[0055] Figure 2 The first joint 11 and the first tie rod 12 of the handrail device are shown. The first joint 11 is installed on the fuselage structure of the transport test aircraft. One end of the first tie rod 12 is connected to the first joint 11, and the other end is connected to the handrail 4 (as shown in FIG. Figure 6As shown, for example, via the armrest joint member 40, which will be described in detail below). Specifically, in this embodiment, the first joint 11 is mounted on the frame 2 of the fuselage structure as a lateral joint, for example, by a threaded connection, and the first tie rod 12 is connected to the first joint 11 as a lateral tie rod. The first joint 11 and the first tie rod 12 can be rotatably connected via a rotating shaft. Advantageously, the first joint 11 can have multiple connection points 13, and in the embodiment shown, there are two connection points 13 ( Figure 2 One of the connection points is hidden by the first tie rod 12. The first tie rod 12 can be connected to the first joint 11 at one of these connection points 13. Designing multiple connection points can adjust the relative installation angle between the first tie rod 12 and other tie rods, thereby adapting to fuselage panels with different curvatures.

[0056] Figure 3 The second joint 21 and the second tie rod 22 of the armrest device are shown. The second joint 21 is installed on the fuselage structure of the transport test aircraft. One end of the second tie rod 22 is connected to the second joint 21, and the other end is connected to the armrest 4 (such as through the armrest joint member 40). Figure 6 (as shown). Specifically, in this embodiment, the second joint 21 is mounted on the fuselage structure frame 2 as a lateral joint, for example, by a threaded connection, and the second tie rod 22 is connected to the second joint 21 as a lateral tie rod. The second joint 21 and the second tie rod 22 can be rotatably connected via a rotating shaft. Optionally, the second joint 21 can have multiple connection points, and the second tie rod 22 can be connected to the second joint at one of these connection points. Designing multiple connection points can adjust the relative installation angle between the second tie rod 22 and the other tie rods, thereby accommodating fuselage panels with different curvatures.

[0057] Since both the first joint 11 and the second joint 21 are mounted on the frame 2 , the first tie rod 12 and the second tie rod 22 are coplanar and perpendicular to the heading of the aircraft, thereby providing lateral support.

[0058] Figure 4 The third joint 31 and the third tie rod 32 of the handrail device are shown. The third joint 31 is installed on the fuselage structure of the transport test aircraft. One end of the third tie rod 32 is connected to the third joint 31, and the other end is connected to the handrail 4 (such as the handrail joint member 40) via the handrail joint member 40. Figure 6 Specifically, in this embodiment, the third joint 31 serves as a panning joint, for example, mounted on the stringer 3 of the fuselage structure via a threaded connection, while the third tie rod 32 serves as a panning tie rod connected to the third joint 31. The third joint 31 and the third tie rod 32 may be rotatably connected via a rotating shaft. Similarly, the third joint 31 may have multiple connection points to adjust the relative angle between the third tie rod 32 and the other tie rods.

[0059] Since the first joint 11 and the second joint 21 are lateral joints, and the third joint 31 is a heading joint, the first joint 11, the second joint 21 and the third joint 31, and thus the first tie rod 12, the second tie rod 22 and the third tie rod 32 are not coplanar, forming a "radial" arrangement to provide sufficient support in both the heading and lateral directions, thereby meeting the strength requirements for test pilots to leave the aircraft in an emergency.

[0060] It should be understood that although the first joint 11 and the second joint 21 are installed on the frame 2 and the third joint 31 is installed on the long stringer 3, this is not restrictive, and in other embodiments, these joints can be installed on the frame 2 and the long stringer 3 in different combinations. For example, the first joint 11 and the second joint 21 can be installed on the long stringer 3, and the third joint 31 can be installed on the frame 2. This installation method can also provide multi-directional support.

[0061] It should also be understood that although the present invention describes an armrest device with three sets of joints and tie rods, in other embodiments, the armrest device may include more sets of joints and tie rods without departing from the scope of the present invention, as long as the combination of these joints and tie rods can provide support in the heading and lateral directions.

[0062] like Figure 6 As shown, in order to facilitate installation, the armrest device 1 may include an armrest joint member 40, which is installed on the armrest 4 so that one end of the first pull rod 12 is connected to the first joint 11 ( Figure 2 ) and the other end is connected to the handrail joint member 40, and one end of the second pull rod 22 is connected to the second joint 21 ( Figure 3 ) and the other end is connected to the handrail joint member 40, and one end of the third pull rod 32 is connected to the third joint 31 ( Figure 4 ) and the other end is connected to the armrest joint member 40. Therefore, when installing the armrest device 1, one end of the first pull rod 12, the second pull rod 22, and the third pull rod 32 can be connected to the corresponding joints respectively, and then the other ends of these three pull rods can be connected to the armrest joint member 40, for example, via a rotating shaft. Finally, the armrest joint member 40 can be installed on the handrail 4.

[0063] In this embodiment, the handrail joint member 40 includes a first handrail joint 41 and a second handrail joint 42, wherein the first tie rod 12, the second tie rod 22, and the third tie rod 32 are connected to the first handrail joint 41. After the three tie rods are connected to the first handrail joint 41, the second handrail joint 42 can be connected to the first handrail joint 41 via bolts 60 to complete the installation of the handrail assembly.

[0064] It should be understood that in Figure 6The figure shows three connection points of the first armrest joint 41 for connecting three tie rods respectively, but the first armrest joint 41 can have four or more connection points, so that the relative installation angles between the tie rods can be adjusted to adapt to fuselage panels with different curvatures.

[0065] It should also be understood that in an embodiment of the present invention, the armrest device includes an armrest joint component 40, but in other embodiments, the armrest device may include multiple armrest joint components, which can be installed at different positions of the armrest, and multiple pull rods can also be connected to any one or more of the multiple armrest joint components, as long as the pull rods can provide support in the heading and lateral directions.

[0066] In the embodiment of the present invention, the handrail 4 and the first, second and third rods 12, 22 and 32 are made of stainless steel, while the first, second and third joints 11, 21 and 31 and the handrail joint member 40 are made of aluminum alloy.

[0067] Figure 5 The handrail assembly 50 for a transport test aircraft of the present invention is shown. The handrail assembly 50 includes a plurality of handrail devices 1 for a transport test aircraft. The handrails 4 of the handrail devices 1 are mounted together via handrail joint members 40. Specifically, as shown in FIG. Figure 6 As shown, the armrest joint member 40 can receive the ends of the armrests 4 of the two armrest devices 1 and then fix the two armrests 4 together by connecting the first armrest joint 41 and the second armrest joint 42 together.

[0068] The modular handrail device 1 allows the total handrail length of the handrail assembly 50 to be adjusted by installing different numbers of handrail devices 1 to meet the requirements of emergency escape passages of different lengths.

[0069] Compared to existing technologies, the armrest system of this utility model utilizes mature finished parts, designed with two simple joints, and is installed on the frame and stringer in a modular and adjustable manner. The armrest is connected to the joints by bolts; the pull rod is connected to the frame and stringer by joints. This solution does not require the design of complex custom parts, making parts easy to purchase, easy to assemble and disassemble, and low in cost. The structure has support in the heading, vertical, and lateral directions, and can simultaneously support three people weighing 95 kg, meeting the strength requirements of test pilots for emergency exits.

[0070] Although the structure and operation of the present invention have been described above in conjunction with preferred embodiments, those skilled in the art will recognize that the above examples are for illustration only and are not intended to limit the present invention. Therefore, modifications and variations may be made to the present invention, and such modifications and variations will fall within the scope of the claims appended hereto.

Claims

1. An armrest device (1) for a transport test aircraft, characterized in that: The handrail device (1) comprises a handrail (4) and a handrail joint component (40), wherein the handrail joint component (40) is mounted on the handrail (4). Characterized in that the armrest device (1) further comprises: a first joint (11), the first joint (11) being mounted on the fuselage structure of the transport test aircraft; a first pull rod (12), one end of the first pull rod (12) being connected to the first joint (11), and the other end being connected to the handrail joint member (40); a second joint (21), the second joint (21) being mounted on the fuselage structure; a second pull rod (22), one end of the second pull rod (22) being connected to the second joint (21), and the other end being connected to the handrail joint member (40); a third joint (31), the third joint (31) being mounted on the fuselage structure; and a third pull rod (32), one end of the third pull rod (32) being connected to the third joint (31), and the other end being connected to the handrail joint member (40), Wherein, the first pull rod (12), the second pull rod (22) and the third pull rod (32) are not coplanar.

2. The armrest device (1) for a transport test aircraft according to claim 1, characterized in that: The first joint (11) and the second joint (21) are mounted on a frame (2) of the fuselage structure, and the third joint (31) is mounted on a stringer (3) of the fuselage structure.

3. The handrail device (1) for a transport test aircraft according to claim 1, characterized in that: At least one of the first joint (11), the second joint (21), and the third joint (31) has a plurality of connection points.

4. The handrail device (1) for a transport test aircraft according to claim 1, characterized in that: The first joint (11) and the first pull rod (12), the second joint (21) and the second pull rod (22), and the third joint (31) and the third pull rod (32) are rotatably connected via a rotating shaft.

5. The handrail device (1) for a transport test aircraft according to claim 1, characterized in that: The handrail joint component (40) includes a first handrail joint (41) and a second handrail joint (42), wherein the first pull rod (12), the second pull rod (22) and the third pull rod (32) are connected to the first handrail joint (41).

6. The handrail device (1) for a transport test aircraft according to claim 5, characterized in that: The first handrail joint (41) and the second handrail joint (42) are connected together by bolts (60).

7. The handrail device (1) for a transport test aircraft according to claim 1, characterized in that: The handrail (4) and the first pull rod (12), the second pull rod (22) and the third pull rod (32) are made of stainless steel.

8. The handrail device (1) for a transport test aircraft according to claim 1, characterized in that: The first joint (11), the second joint (21), the third joint (31) and the handrail joint component (40) are made of aluminum alloy material.

9. An armrest assembly (50) for a transport test aircraft, characterized in that: The armrest assembly (50) for a transport-category test aircraft comprises a plurality of armrest devices (1) for a transport-category test aircraft according to any one of claims 1 to 8.

10. The handrail assembly (50) for a transport-type test aircraft according to claim 9, characterized in that: The handrails (4) of the handrail device (1) are mounted together via the handrail joint member (40).

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