Landing lamp mouth frame positioning and line drawing device

Abstract

The utility model belongs to the technical field of aircraft assembly and connection, and relates to a device for mounting a landing lamp socket frame on a nacelle of a main landing gear and scribing skin allowance. The utility model particularly relates to a landing lamp mouth frame positioning and line drawing device. Comprising a support, a connecting plate and a positioning scribing disc. The connecting plate comprises a vertical plate and a transverse plate, the vertical plate and the transverse plate are connected through a fork lug and a threaded connecting pin, the support is of an L-shaped structure and is connected with the vertical plate of the connecting plate through a connecting bolt, a positioning hole is formed in the transverse plate, and the positioning scribing disc is connected with the transverse plate through the positioning hole by adopting a screw. By using the landing lamp socket frame positioning and line drawing device, the installation difficulty of landing lamp socket frame parts is reduced, the installation precision is high, the operation is simple, the use is convenient, the installation efficiency is high, and meanwhile, the position precision and the roundness precision of landing lamp socket frame skin trepanning are improved; the problems that the installation angle of the landing lamp deviates and the gap between the landing lamp and the periphery of the opening frame skin is not uniform are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft assembly connection, and relates to a device for installing a landing light port frame on a main landing gear nacelle and drawing lines for the skin allowance. Specifically, it is a positioning and line-drawing device for the landing light port frame. Background Technique

[0002] During the installation of the landing light on the main landing gear nacelle of a certain type of aircraft, faults such as uneven gaps around the opening of the landing light and the skin of the main landing gear nacelle and deviation in the installation angle of the landing light have been proposed many times.

[0003] The landing light port frame is installed in the sandwich of the partition and stringer and the skin of the main landing gear nacelle. The process method of line-drawing positioning is used to position the landing light port frame parts on the skin of the main landing gear nacelle. The installation position of the landing light port frame parts is the double-curved skin contour. When positioning the parts, it is necessary to coordinate with the positions of the skin, stringer and partition of the main landing gear nacelle many times, and it is impossible to effectively ensure the accuracy of positioning the landing light port frame parts on the main landing gear nacelle. During the installation of the landing light, the installation angle of the landing light is deviated many times due to the positioning error of the landing light port frame parts. To solve the fault of the deviation of the installation angle of the landing light, it is necessary to replace the landing light port frame parts again to ensure the installation angle of the landing light on the main landing gear nacelle.

[0004] The skin opening of the landing light port frame is completed after the main landing gear nacelle is assembled and removed from the rack. Based on the landing light installation holes on the landing light port frame parts, the process method of manual line-drawing is used to draw the allowance lines for the skin opening of the main landing gear nacelle port frame. This method cannot guarantee the position accuracy and circularity of the skin opening of the main landing gear nacelle port frame. During the installation of the landing light, the gaps between the landing light and the periphery of the skin opening are uneven many times due to the position deviation and circularity error of the opening. To solve the fault of the uneven gaps between the landing light and the periphery of the skin opening of the port frame, it is necessary to file the allowance of the skin opening of the main landing gear nacelle according to the finished shape of the landing light to ensure the evenness of the gaps between the landing light and the periphery of the skin opening of the port frame. Content of the Utility Model

[0005] Purpose of the Utility Model

[0006] It is to solve the problem of the deviation in the installation angle of the landing light caused by the manual line-drawing positioning error of the landing light port frame parts and the problem of the uneven gaps between the landing light and the periphery of the skin opening of the main landing gear nacelle port frame due to the inability to guarantee the position accuracy and circularity of the opening by manual line-drawing of the skin of the main landing gear nacelle port frame.

[0007] Technical Solution

[0008] A landing light socket frame positioning and scribing device, comprising a support 1, a connecting plate 2, and a positioning and scribing disc 3; the connecting plate 2 includes a vertical plate and a horizontal plate, the vertical plate and the horizontal plate are connected by a fork ear and connected by a threaded connection pin, the support 1 is of an L-shaped structure and is connected to the vertical plate of the connecting plate 2 through a connecting bolt 5, the horizontal plate is provided with a positioning hole, and the positioning and scribing disc 3 is connected to the horizontal plate through the positioning hole by screws.

[0009] Furthermore, the positioning and scribing disc 3 is a cylindrical boss, the large cylindrical boss surface is used for the longitudinal positioning of the socket frame part 4, and the small cylindrical boss surface is used for the radial positioning of the socket frame part 4.

[0010] Furthermore, the height of the cylindrical boss should be greater than the thickness of the socket frame part 4.

[0011] Furthermore, the relative angle between the positioning and scribing disc 3 and the connecting plate 2 is achieved by adjusting the threaded connection pin.

[0012] Furthermore, the support 1 and the connecting plate 2 are made of 45 steel.

[0013] Furthermore, the positioning and scribing disc 3 is made of aluminum material, with light structure while ensuring strength.

[0014] The beneficial effects of this application are as follows:

[0015] Using the landing light socket frame positioning and scribing device reduces the installation difficulty of the landing light socket frame parts, has high installation accuracy, is simple to operate, convenient to use, and has high installation efficiency. At the same time, the position accuracy and circularity accuracy of the opening of the landing light socket frame skin are improved, solving the problems of installation angle deviation of the landing light and uneven clearance between the landing light and the periphery of the socket frame skin. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Wherein: 1 - support, 2 - connecting plate, 3 - positioning and scribing disc, 4 - socket frame part, 5 - connecting bolt.

[0018] Figure 2 is the structural schematic diagram of the support 1;

[0019] Figure 3 is the structural schematic diagram of the connecting plate 2;

[0020] Figure 4 is the structural schematic diagram of the positioning and scribing disc 3; Detailed Implementation Modes

[0021] The present utility model will be further described in conjunction with embodiments. The following only describes some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0022] In order to solve the problems of the installation angle deviation of the landing light and the uneven gap around the landing light and the skin of the opening frame, the present utility model provides a device for positioning the landing light opening frame part on the main landing gear nacelle and drawing the allowance line for the opening of the main landing gear nacelle skin, which effectively guarantees the installation accuracy of the landing light opening frame part, the position accuracy of the landing light opening on the main landing gear nacelle skin and the roundness of the opening.

[0023] Add a device for positioning the landing light opening frame part and drawing the skin allowance line on the main landing gear nacelle assembly jig. The device for positioning the landing light opening frame part and drawing the skin allowance line needs to be light and easy to disassemble and assemble. Mark the course identification on the landing light opening frame positioning device to avoid misinstalling the direction of the landing light opening frame positioning device and causing mispositioning of the landing light opening frame part. Set positioning pins and locking nuts on the landing light opening frame positioning device that match the landing light installation holes on the landing light opening frame part for positioning and tightening and fixing the landing light opening frame part on the landing light opening frame part positioning device. The outer shape of the landing light opening frame positioning and skin allowance drawing device is consistent with the opening of the landing light on the main landing gear nacelle skin, and is used to draw the allowance line at the landing light opening on the main landing gear nacelle skin after the main landing gear nacelle assembly is completed, ensuring the position accuracy and roundness of the landing light opening on the skin, and facilitating the removal of the allowance for the landing light opening on the main landing gear nacelle skin. The use of this device:

[0024] 1. Before the main landing gear nacelle skin is positioned and installed on the assembly jig, install the connecting plate on the base of the main landing gear nacelle assembly jig according to the course identification and installation holes on the landing light opening frame part positioning device and tighten it with bolts. Install the landing light opening frame positioning and drawing device on the connecting plate and tighten it with fixing bolts;

[0025] 2. After the main landing gear nacelle skin is positioned and installed, position and install the landing light opening frame part on the main landing gear nacelle skin according to the positioning pins on the landing light opening frame positioning and drawing device and the landing light installation holes on the landing light opening frame part, and tighten and fix the landing light opening frame part with a locking nut on the positioning pin. After confirming that the positioning and installation are correct, continue to complete the positioning and connection of the main landing gear nacelle partition and stringer;

[0026] 3. Before the main landing gear nacelle is assembled and removed from the assembly jig, disassemble the bolts connecting the landing light opening frame positioning and drawing device and the connecting plate of the main landing gear nacelle assembly jig, and the landing light opening frame positioning and drawing device is removed from the assembly jig together with the main landing gear nacelle;

[0027] 4. After the lower part of the main landing gear nacelle is properly placed, draw the margin line for the landing light opening on the skin of the main landing gear nacelle according to the shape of the landing light opening frame positioning and marking device. Check the quality of the marking. After confirming that there are no problems, disassemble the tightening nut connecting the landing light opening frame positioning and marking device and the landing light opening frame parts, remove the landing light opening frame positioning device, and remove the opening margin of the main landing gear nacelle skin according to the margin line.

[0028] 5. After the opening margin of the landing light on the main landing gear nacelle skin is removed, install the connecting plate on the base of the main landing gear nacelle assembly jig according to the course mark and mounting holes on the landing light opening frame part positioning device and tighten it with bolts.

[0029] Those skilled in the art of this technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used here have the same meaning as the general understanding of those of ordinary skill in the art in the field to which this utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as here. The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of this utility model. It should be understood that the above is only the specific embodiment of this utility model and is not used to limit this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this utility model shall be included within the protection scope of this utility model.

Claims

1. A landing light frame positioning and marking device, characterized in that: It includes a support, a connecting plate, and a positioning marking disk; the connecting plate includes a vertical plate and a horizontal plate, the vertical plate and the horizontal plate are connected by fork ears and threaded connecting pins, the support is an L-shaped structure, connected to the vertical plate of the connecting plate by connecting bolts, the horizontal plate is provided with positioning holes, and the positioning marking disk is connected to the horizontal plate by screws through the positioning holes.

2. The device according to claim 1, characterized in that The positioning scoring disk is a cylindrical boss, the large cylindrical boss surface is used for the longitudinal positioning of the mouth frame parts, and the small cylindrical boss surface is used for the radial positioning of the mouth frame parts.

3. The device according to claim 2, characterized in that The height of the cylindrical boss should be greater than the thickness of the mouth frame part.

4. The device according to claim 3, characterized in that The relative angle between the positioning scoring disk and the connecting plate is achieved by adjusting the threaded connecting pin.

5. The device according to claim 4, characterized in that The support and connecting plate are made of grade steel.

6. The device according to claim 5, characterized in that The positioning and marking disk is made of aluminum material.

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