Lifting mechanism for air inlet fairing of engine

Abstract

The invention relates to a lifting mechanism for an air inlet fairing of an engine, which comprises a vehicle body for mounting the lifting mechanism, the lifting mechanism is mounted on the vehicle body, the lifting mechanism comprises a support plate mounting block, fairing support plates are arranged at two ends of the support plate mounting block, and a transverse fine adjustment assembly is arranged in the middle of the bottom end of the support plate mounting block. A first rotating hand wheel is arranged at the position, corresponding to the fairing supporting plate, of the side face of the supporting plate mounting block. By means of two-way adjustment of the pitching angle, the radial angle and the radial angle, various series of fairings of different sizes can be covered, the fairings are matched with the long and short fairings by adjusting the radial distance, the pitching angle and the radial angle are adjusted to be matched with curved surfaces of different curvatures, the number of special supporting pieces is reduced, the equipment purchase and inventory cost is reduced, cost reduction and efficiency improvement are achieved, and the fairings can be widely applied to the field of fairings. Dependence on high-tech workers due to the fact that manual disassembly and assembly are needed in a traditional mode is reduced, and meanwhile human errors are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of engine air inlet fairing lifting, and particularly relates to a lifting mechanism for an engine air inlet fairing. BACKGROUND

[0002] In the maintenance and assembly process of an aero-engine, the lifting operation of the engine air inlet fairing is a key and challenging link. The engine air inlet fairing is an important component for ensuring smooth engine air inlet and preventing foreign matter intrusion. The shape of the engine air inlet fairing is usually irregular, similar to the shape of a turtle shell, and different models of the fairing have obvious differences in shape. This feature makes it extremely difficult to design a special profiling clamp to fix the fairing.

[0003] In the prior art, the traditional lifting method of the engine air inlet fairing mainly relies on manual operation combined with simple tools. This method has many disadvantages, for example, a large amount of manpower and time cost is required during transportation, installation and disassembly of the fairing, and the whole process is time-consuming and laborious. Moreover, due to the difficulty in ensuring the precision and stability of manual operation, the fairing is easily damaged during lifting, and the proficiency of the operator is extremely high. Moreover, with the rapid development of the aviation industry, the number of aircraft is increasing, and this traditional lifting method relying on skilled workers cannot meet the maintenance and assembly requirements of a large number of aircraft. Therefore, there is an urgent need for a mechanism that can lift engine fairings of different shapes to meet the growing needs of the aviation field and improve the quality and efficiency of engine maintenance and assembly. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned problems. The present application provides a lifting mechanism for an engine air inlet fairing, which has stronger dynamic adaptability. A fine adjustment device for radial movement and angle adjustment is provided for the fairing support plate, so that the outer surface of the fairing support plate can closely fit the outer surface of the engine fairing, and the lifting purpose is achieved stably and reliably.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a lifting mechanism for an engine air inlet fairing, comprising a vehicle body for installing the lifting mechanism, a lifting assembly, a horizontal moving assembly, a longitudinal moving assembly, a horizontal rotating assembly and a left-right pitching swing assembly are installed on the vehicle body, the lifting mechanism is installed above the longitudinal moving assembly on the vehicle body, comprising a support plate mounting block, two ends of the support plate mounting block are provided with fairing support plates, a horizontal moving fine adjustment assembly is arranged at the middle position of the bottom end of the support plate mounting block, and a rotating handle one is arranged at the position corresponding to the fairing support plate on the side surface of the support plate mounting block.

[0006] Further, the lateral micro-adjusting assembly comprises a fixed block mounted on the vehicle body longitudinal moving assembly, a guide rail mounting plate is arranged on the fixed block, a guide rail is arranged above the guide rail mounting plate, limit blocks are arranged on the guide rail mounting plate at both ends of the guide rail, and a self-locking screw No.2 is further arranged on the guide rail mounting plate at the middle of the guide rail; and a rotating hand wheel No.2 is arranged on one side of the support plate mounting block and connected with the self-locking screw No.2.

[0007] Further, the lower end of the fairing support plate is connected with a rotating hand wheel No.1 through a self-locking screw No.1, the rotating hand wheel No.1 is used for adjusting the radial angle of the fairing support plate, the upper end of the fairing support plate is connected with a fixed connecting block on the support plate mounting block in a hinged manner, and the fixed connecting block is used for adjusting the pitch angle of the fairing support plate.

[0008] Further, a rotating hand wheel mounting block is arranged on the side surface of the support plate mounting block at a position for mounting the rotating hand wheel No.1, the rotating hand wheel mounting block is designed as a hollow structure at the middle position, and the self-locking screw No.1 penetrates through the rotating hand wheel mounting block, the support plate mounting block and the fairing support plate.

[0009] Further, the rotating hand wheel No.2 is used for controlling the lateral movement of the support plate mounting block.

[0010] Further, the upper surface of the fairing support plate is designed as an arc shape, a plurality of support holes are arranged on the upper surface, and the fairing support plate is made of aluminum alloy.

[0011] Compared with the prior art, the present application has the following beneficial effects: The fairing support plate is designed as an arc shape, the fairing support plate is fixed on the support plate mounting block in a hinged manner, the rotating hand wheel No.1 and the self-locking screw No.1 are connected with the fairing support plate, the radial angle of the fairing support plate is adjusted, the fairing support plate is closely fitted to the curved surface of the engine fairing, the upper end of the fairing support plate is connected with the support plate mounting block in a hinged manner, the pitch angle is adaptively adjusted according to the actual situation, the support plate mounting block for mounting the fairing support plate can realize radial movement due to the arrangement of the lateral micro-adjusting assembly, the engine fairing reference point is aligned, the stress is evenly distributed to the entire support surface, the "point stress" is changed into "surface stress", and the structural integrity of the fairing is protected.

[0012] The present application can cover various series and different sizes of fairings through "pitch angle, radial angle" + "radial" two-way adjustment, the radial distance is adjusted to adapt to long and short fairings, the pitch angle is adjusted to adapt to curved surfaces with different curvatures, the number of special support pieces is reduced, the equipment procurement and inventory costs are reduced, the cost is reduced and the efficiency is increased, the dependence on high-skilled labor for traditional disassembly and assembly is reduced, and human errors are also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only for more clearly illustrating the technical solutions in the embodiments of the present invention or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an isometric view of the overall structure of the present invention; Figure 2 This is an isometric view of the overall structure of the present invention from another angle; Figure 3 This is a schematic plan view of the overall structure of the present invention; Figure 4 This is a layout diagram of the present invention installed on the longitudinal movement assembly of the vehicle body; Figure 5 This is a structural diagram of the invention installed on a vehicle body; In the diagram: 1-Support plate mounting block, 2-Fairing support plate, 3-Rotating handwheel one, 4-Rotating handwheel two, 5-Fixing block, 6-Guide rail, 7-Rotating handwheel mounting block, 8-Connecting block, 9-Self-locking screw two, 10-Guide rail mounting plate, 11-Limiting block, 12-Support hole. Detailed Implementation

[0015] To enable those skilled in the art to better understand and implement the technical solutions of the present invention, the present invention will be further described below with reference to specific embodiments. However, the embodiments are only for illustration and are not intended to limit the present invention.

[0016] like Figure 5 The illustrated lifting mechanism for an engine intake cowl includes a vehicle body for mounting the lifting mechanism. The vehicle body is equipped with a lifting assembly, a lateral movement assembly, a longitudinal movement assembly, a horizontal rotation assembly, and a left-right pitching and swinging assembly. The lifting mechanism is mounted above the longitudinal movement assembly on the vehicle body.

[0017] like Figure 1As shown in Fig. 4, the lifting mechanism comprises a support plate mounting block 1, both ends of the support plate mounting block 1 are provided with fairing support plates 2, the side of the support plate mounting block 1 is provided with a rotating hand wheel one 3 at a position corresponding to the fairing support plate 2, the lower end of the fairing support plate 2 is connected with the rotating hand wheel one 3 through a self-locking screw one, the side of the support plate mounting block 1 is provided with a rotating hand wheel mounting block 7 at a position for mounting the rotating hand wheel one 3, the rotating hand wheel mounting block 7 is designed as hollow at a middle position, the self-locking screw one penetrates through the rotating hand wheel mounting block 7, the support plate mounting block 1 and the fairing support plate 2, and the rotating hand wheel one 3 is used for adjusting the radial angle of the fairing support plate 2; the upper end of the fairing support plate 2 is connected with a connecting block 8 fixed on the support plate mounting block 1 in a hinged manner, and the hinged connecting manner is convenient for self-adaptive adjustment of the pitch angle of the fairing support plate according to actual needs.

[0018] A horizontal movement fine adjustment assembly is arranged at a middle position of the bottom end of the support plate mounting block 1, the horizontal movement fine adjustment assembly comprises a fixed block 5 mounted on a vehicle body longitudinal movement assembly, a guide rail mounting plate 10 is arranged on the fixed block 5, a guide rail 6 is arranged above the guide rail mounting plate 10, limit blocks 11 are arranged at both ends of the guide rail 6 on the guide rail mounting plate 10, and a self-locking screw two 9 is further arranged above the guide rail mounting plate 10 at a middle position of the guide rail 6, a rotating hand wheel two 4 is arranged on one side of the support plate mounting block 1 and connected with the self-locking screw two 9, and the rotating hand wheel two 4 is used for controlling the horizontal movement of the support plate mounting block 1.

[0019] Preferably, the upper surface of the fairing support plate 2 is designed as an arc shape and is provided with a plurality of support holes 12, and the fairing support plate 2 is made of aluminum alloy.

[0020] Preferably, a scale is arranged on the guide rail mounting plate 10 of the horizontal movement fine adjustment assembly, the moving distance of the support plate mounting block 1 is monitored in real time, and the alignment with the reference point of the engine fairing is ensured; a plurality of (usually two) pressure sensors are arranged at high points and low points on the upper surface (i.e. the support surface) of the fairing support plate 2, the pressure value is monitored when the fairing contacts the surface of the fairing support plate 2 in the lifting mechanism, and the uniform distribution of the force on the reference point is ensured.

[0021] When adjustment is needed, the radial angle of the fairing support plate is adjusted by rotating the rotating hand wheel one, so that the fairing support plate is closely combined with the outer surface of the engine intake fairing, the pitch angle is self-adaptively adjusted according to the situation, and the fairing support plate is contacted with the outer surface of the fairing in the axial coaxial state; the fairing support plate is moved horizontally by rotating the rotating hand wheel two, and the intake fairing support plate is closely combined with the outer surface of the fairing in the radial direction.

[0022] The application can cover various series and different sizes of fairing through "pitch angle, radial angle" + "radial" two-way adjustment, the length of the fairing is adjusted by adjusting the radial distance, the pitch angle and the radial angle are adjusted to adapt to the curved surface with different curvatures, the number of special supporting parts is reduced, the equipment procurement and inventory cost are reduced, the cost is reduced and the efficiency is increased, the dependence on high technical labor for traditional manual disassembly and assembly is reduced, and human errors are also reduced.

[0023] The contents not described in detail in the application are prior art.

[0024] The above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation modes are not required or can not be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting mechanism for an engine intake cowling, comprising a vehicle body for mounting the lifting mechanism, wherein a lifting assembly, a lateral movement assembly, a longitudinal movement assembly, a horizontal rotation assembly, and a left-right pitching and swinging assembly are mounted on the vehicle body, characterized in that: The lifting mechanism is installed above the longitudinal movement component on the vehicle body and includes a support plate mounting block (1). The two ends of the support plate mounting block (1) are provided with fairing support plates (2). The middle position of the bottom end of the support plate mounting block (1) is provided with a transverse fine adjustment component. The side of the support plate mounting block (1) is provided with a rotating handwheel (3) at the position corresponding to the fairing support plate (2).

2. The lifting mechanism for an engine intake cowling according to claim 1, characterized in that: The lateral fine-tuning component includes a fixing block (5) installed on the longitudinal movement component of the vehicle body. The fixing block (5) is provided with a guide rail mounting plate (10). A guide rail (6) is provided above the guide rail mounting plate (10). Limiting blocks (11) are provided at both ends of the guide rail (6) on the guide rail mounting plate (10). A self-locking screw (9) is also provided above the guide rail mounting plate (10) in the middle of the guide rail (6). A rotating handwheel (4) is provided on one side of the support plate mounting block (1) and connected to the self-locking screw (9).

3. A lifting mechanism for an engine intake cowling according to claim 1, characterized in that: The lower end of the fairing support plate (2) is connected to a rotating handwheel (3) via a self-locking screw. The rotation of the rotating handwheel is used to adjust the radial angle of the fairing support plate. The upper end of the fairing support plate (2) is connected to the connecting block (8) fixed on the support plate mounting block (1) in a hinged manner, which is used to adjust the pitch angle of the fairing support plate (2).

4. A lifting mechanism for an engine intake cowling according to claim 3, characterized in that: The side of the support plate mounting block (1) is provided with a rotating handwheel mounting block (7) at the position for mounting the rotating handwheel (3). The rotating handwheel mounting block (7) is hollow in the middle. The self-locking screw passes through the rotating handwheel mounting block (7) and the support plate mounting block (1) and connects to the fairing support plate (2).

5. A lifting mechanism for an engine intake cowling according to claim 2, characterized in that: The rotation of the second rotating handwheel (4) is used to control the lateral movement of the support plate mounting block (1).

6. A lifting mechanism for an engine intake cowling according to any one of claims 1 to 5, characterized in that: The upper surface of the fairing support plate (2) is arc-shaped and has several support holes (12). The fairing support plate (2) is made of aluminum alloy.

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