Double-button sealing lock tapping device

Abstract

The utility model belongs to the technical field of aircraft assembly and connection, and relates to a double-button sealing lock tapping device on each maintenance covering cap on an aircraft. Comprising a bottom plate and a spring bolt assembly. The bottom plate is connected with the spring bolt assembly into a whole through welding, the spring bolt assembly comprises a boss and a supporting arm, the boss and the supporting arm are of an integrated structure, a connecting hole is formed in the edge of the bottom plate, the position of the connecting hole is set according to the position of an opening hole in a covering cap lock base, and a center hole is formed in the middle of the bottom plate. And the position of the central hole is determined according to the position of the covering cap lock button. By using the double-button sealing lock, the opening difficulty of the buttons of the double-button sealing lock is reduced, the opening position precision and the opening aperture precision are improved, the operation is simple, the use is convenient, and the installation efficiency is high. The installation period of double-button sealing is shortened, and the rejection rate of rubber rings on maintenance covering caps and double-button sealing lock buttons is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft assembly connection, and relates to a double-button sealing lock opening device on each maintenance cover on the aircraft. Background Art

[0002] In order to improve the sealing performance of each maintenance cover on a certain type of machine body, a new type of double-button sealing lock was used in the cover lock connecting the cover and the frame in the design drawings of each maintenance cover during the product development stage. The position accuracy and hole diameter tolerance of the two openings of the double-button sealing lock button on the cover are relatively high. The tolerance requirement for the hole diameter of the double-button sealing lock button is 0+0.25, and the position tolerance requirement for the two button openings of the double-button sealing lock on the cover is ±0.2. The double-button sealing lock is positioned on the inside of the cover by using the line drawing positioning process method, and the contour line of the double-button sealing lock is drawn. Then, the contour lines of the two button openings of the double-button sealing lock on the cover are drawn by the line drawing process method according to the specified size in the design drawing. The position accuracy tolerance requirements of the double-button sealing lock button openings cannot be met. At the same time, the double-button sealing lock openings are repaired by using a small amount of excess removal multiple times, which also cannot meet the hole diameter tolerance requirements of the double-button sealing lock button openings. This resulted in the opening on the cover being incompatible with the double-button sealed lock button and making it impossible to install, the gap around the double-button sealed lock button and the opening on the cover being uneven, and the diameter of the double-button sealed lock button opening on the cover exceeding the tolerance requirements in the design drawings. During the assembly process of each maintenance cover, the cover was scrapped and replaced many times due to the incompatibility between the double-button sealed lock button and the opening on the cover, the uneven gap, and the diameter of the double-button sealed lock button opening exceeding the tolerance requirements in the design drawings. At the same time, due to the incompatibility between the opening on the cover and the double-button sealed lock button, the rubber ring on the double-button sealed lock button partially interfered with the cover during the use of the double-button sealed lock, causing the rubber ring on the double-button sealed lock button to be damaged and unable to be used. Utility Model Content

[0003] Purpose of the utility model

[0004] The utility model aims to solve the problem that the position accuracy of the openings on the maintenance cover of the double-button sealed lock on the machine body and the hole diameter of the double-button sealed lock button exceed the tolerance requirements in the design drawing. The utility model solves the problem that the opening on the cover and the double-button sealed lock button are not coordinated due to the process method of drawing holes, reduces the difficulty of opening the double-button sealed lock, and improves the assembly accuracy and use requirements of the double-button sealed lock. Reduce the installation cycle of the double-button seal and reduce the scrap rate of the rubber rings on each maintenance cover and the double-button sealed lock button.

[0005] Technical Solution

[0006] A double-button sealed lock opening device comprises a base plate 1 and a lock tongue assembly 2; the base plate 1 is connected to the lock tongue assembly 2 as a whole by welding, the lock tongue assembly 2 comprises a boss and a support arm, the boss and the support arm are an integrated structure, a connecting hole 3 is provided on the edge of the base plate 1, the position of the connecting hole 3 is set according to the position of the opening on the cover lock base, a center hole 4 is opened in the middle of the base plate 1, and the position of the center hole 4 is determined according to the position of the cover lock button.

[0007] Furthermore, a bushing is provided on the connecting hole 3, and the bushing is used for anti-wear protection.

[0008] Furthermore, the number of the connecting holes 3 is 4, which are used to fix the bottom plate 1.

[0009] Furthermore, the number of the center holes 4 is two, and the center distance between the two center holes should be consistent with the center distance between the two buttons of the flap lock, so as to determine the center position of the flap lock button.

[0010] Furthermore, a bushing is provided on the central hole 4 for anti-wear protection.

[0011] Furthermore, the base plate 1 and the locking tongue assembly 2 are both made of No. 45 steel.

[0012] The beneficial effects of this application are:

[0013] The utility model reduces the difficulty of opening a double-button sealing lock button, improves the position accuracy and aperture accuracy of the opening, is simple to operate, convenient to use, and has high installation efficiency. It reduces the installation cycle of the double-button seal and reduces the scrap rate of the rubber rings on each maintenance cover and the double-button sealing lock button. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a working diagram of the double button sealing lock;

[0015] Figure 2 It is a working schematic diagram of a double-button sealed lock opening device;

[0016] Among them: 1-base plate, 2-lock tongue assembly, 3-connecting hole, 4-center hole. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the embodiments. The following are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Combined with Figure 1 , Attachment Figure 2, providing a double-button sealed lock opening device, which is provided with four Φ3.1mm center holes of the double-button sealed lock and the cover connection hole, two Φ5.1mm center holes of the double-button sealed lock button opening and a lock tongue assembly of the double-button sealed lock according to the double-button sealed lock product drawing.

[0019] During the installation of the double-button sealing locks of each maintenance cover of the fuselage, after the gap between the maintenance cover cover plate and the skin opening circle is repaired and the cover and the opening frame are connected, draw a line on the inner side of the cover cover plate to locate the double-button sealing lock opening device according to the size requirements specified in the design drawings of each maintenance cover, check the overlap position of the lock tongue assembly and the opening frame, drill the rivet holes for connecting the double-button sealing lock and the cover on the cover according to the four Φ3.1mm center holes of the double-button sealing lock and the cover connection holes on the double-button sealing lock opening device, and tighten and secure with the positioning pin. After confirming that the double-button sealing lock opening device is firmly fixed, drill the center hole of the opening according to the two Φ5.1mm center holes of the double-button sealing lock button opening on the double-button sealing lock opening device. Disassemble the positioning pin, remove the double-button sealing lock opening device, and then use a hole drill with a front guide rod diameter of Φ5.1mm and a final hole diameter of Φ22mm to expand to the two Φ22mm final holes of the double-button sealing lock opening, and remove the burrs around the opening. Press the double button sealing lock and the cover connection hole to position and rivet the double button sealing lock. Use of this device:

[0020] 1. Draw the margin line of the skin opening according to the cover plate of each maintenance cover of the fuselage, adjust the peripheral margin of the skin of the cover frame, ensure that the peripheral gap between the cover plate and the skin opening meets the requirements of the design drawings and technical conditions, and complete the connection between the cover and the frame;

[0021] 2. Draw a line on the inner side of the mouth cover after the margin of the mouth frame skin is trimmed and the mouth cover is connected to the mouth frame to locate the double-button sealing lock opening device, check the overlapping position of the lock tongue assembly and the mouth frame, press the four Φ3.1mm center holes of the double-button sealing lock and mouth cover connection holes on the double-button sealing lock opening device, drill the rivet holes for connecting the double-button sealing lock and the mouth cover on the mouth cover, and tighten and fix them with positioning pins;

[0022] 3. After the double-button sealing lock hole opening device is positioned on the mouth cover, press the double-button sealing lock button opening on the double-button sealing lock hole opening device to drill the two Φ5.1mm center holes of the opening on the mouth cover.

[0023] 4. Disassemble the positioning pin, remove the double button sealing lock opening device, press the double button sealing lock button opening center hole with a front guide rod diameter of Φ5.1mm and a hole diameter of Φ22mm to expand to two Φ22mm end holes of the double button sealing lock button opening, and remove the burrs around the opening. Position the double button sealing lock and the cover connection hole to rivet the double button sealing lock.

[0024] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries 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 implementation methods described above further explain the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A double button sealed lock opening device, characterized in that: It includes a base plate and a lock tongue assembly; the base plate is connected to the lock tongue assembly as a whole by welding, the lock tongue assembly includes a boss and a support arm, the boss and the support arm are an integrated structure, a connecting hole is provided on the edge of the base plate, the position of the connecting hole is set according to the position of the hole on the cover lock base, a center hole is opened in the middle of the base plate, and the position of the center hole is determined according to the position of the cover lock button.

2. The device according to claim 1, characterized in that The connecting hole is provided with a bushing, and the bushing is used for anti-wear protection.

3. The device according to claim 2, characterized in that There are four connection holes for fixing the bottom plate.

4. The device according to claim 3, characterized in that There are two center holes, and the center distance of the two center holes should be consistent with the center distance of the two buttons of the cover lock, which is used to determine the center position of the cover lock button.

5. The device according to claim 4, characterized in that A bushing is provided on the center hole for anti-wear protection.

6. The device according to claim 5, characterized in that The base plate and the locking tongue assembly are both made of No. 45 steel.

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