Dismounting device for boss shell cover of aircraft fuel component

Abstract

The utility model discloses a dismounting device for a boss shell cover of an airplane fuel oil component, which comprises a fixed base, a fixed base, a rotating shaft, a rotating shaft, a rotating shaft, a rotating shaft and a rotating shaft, wherein a base through hole is formed in the middle of the fixed base; the two overturning pin rollers are symmetrically distributed on the two sides of the upper surface of the fixed base, each overturning pin roller is provided with a pair of pin shafts and a pair of stop pins, and each overturning pin roller is further provided with a handle; the two sets of mounting supports are symmetrically fixed to the two sides of the upper surface of the fixed base, and the pin shafts of the overturning pin rollers are rotationally connected to the mounting supports; and the clamping combination plate comprises two separable clamping plates, and the middles of the two clamping plates are spliced and combined to form the clamping combination plate with a cylindrical hole matched with the shape of the shell cover to be disassembled. In the dismounting process, gentle and balanced lifting force is provided for the shell cover, and the dismounting process is safe and reliable.

Description

Technical Field

[0001] The utility model relates to a disassembly device for a boss shell cover of an aircraft fuel component. Background Art

[0002] The fuel system is an important component of the aircraft engine system, and fuel components are the main functional units that constitute the fuel system. Their reliability and maintenance quality are related to the safety and performance of the engine, and have always been the focus of aviation maintenance.

[0003] There are many types of shell covers for fuel components. Figure 1 and Figure 2 The figure shows a relatively common shell cover installation structure, in which a cylindrical annular shell cover 14 with a boss 15 is sealed and connected to the end 13 of the fuel component base, and a plurality of internal threaded holes 13a are provided at the bottom of the end 13 of the fuel component base. This shell cover structure is usually matched and sealed with the fuel component base through multiple sealing rings. When the component is working, the shell cover wraps the inner cavity of the component to ensure that the fuel runs safely in the specified cavity and pipeline. When the component is maintained, the shell cover and the component base need to be disassembled and disassembled. When the shell cover is disassembled, because the sealing ring becomes sticky due to being immersed in the fuel for a long time, and there is an adsorption force of a solidified oil film between the shell cover and the component base, it is necessary to overcome the dual resistance of the stickiness of the sealing ring and the solidified oil film when disassembling the shell cover, which makes it very difficult to disassemble the shell cover. During the disassembly process, it is very easy to damage the shell cover and the component base by excessive force. Utility Model Content

[0004] The utility model aims to provide a disassembly device for a boss shell cover of an aircraft fuel component, which provides a gentle and balanced lifting force to the shell cover boss during the disassembly process, separates the shell cover from the fuel component base, and improves the efficiency and reliability of the disassembly process.

[0005] The purpose of the utility model can be achieved through the following technical solutions.

[0006] A disassembly device for a boss cover of an aircraft fuel component, comprising:

[0007] A fixed base, wherein the bottom of the fixed base is provided with a support foot, and the middle of the fixed base is provided with a base through hole for facilitating a fastener to lock the end of the aircraft fuel component base from the bottom of the fixed base;

[0008] Two flip rollers are symmetrically distributed on both sides of the upper surface of the fixed base, and the flip rollers are provided with a pair of mutually symmetrical pins and a pair of mutually symmetrical stop pins on the circular end surfaces on both sides, and the flip rollers are also provided with a handle;

[0009] Two groups of mounting brackets are symmetrically fixed on both sides of the upper surface of the fixed base, and are respectively used to mount the corresponding flip rollers. The pin shaft of the flip roller is rotatably connected to the mounting bracket, and a stop platform for limiting and supporting the stop pin is provided on the mounting bracket. The pin shaft is eccentrically arranged relative to the circular end surface of the flip roller. In the initial state, the stop pin is located at the inner side of the pin shaft and supported on the stop platform. When the flip roller flips from the initial state to the outer side of the fixed base, the flip roller rotates around the pin shaft to make the center of gravity of the flip roller rise.

[0010] A clamping assembly plate includes two detachable clamping plates. The middle parts of the two clamping plates are spliced ​​and assembled into a clamping assembly plate with a cylindrical hole matching the shape of the shell cover to be removed. The upper surfaces of the two clamping plates are used to abut against the boss of the shell cover to be removed, and the lower surfaces of the two clamping plates are used to abut against the cylindrical surface of the flip roller.

[0011] The utility model fixes the fuel component base through the fixed base, and after the clamping combination plate clamps the shell cover, when the handle is pulled to make the flip roller flip to the outside of the fixed base, the center of gravity of the flip roller rises and presses against the clamping combination plate, and the clamping combination plate applies external force to the boss of the shell cover, and applies a gentle lifting force to the entire end surface of the boss to separate the shell cover from the fuel component base. During the disassembly process, the lifting force is evenly distributed, and the damage to the base component and the shell cover caused by the local force application method is avoided. The disassembly efficiency is high and the disassembly process is safe and reliable.

[0012] The utility model also has the following preferred designs:

[0013] In the initial state of the utility model, the line connecting the center of the pin shaft and the center of the circular end surface of the flip roller is a horizontal line and the handle is in a vertical state.

[0014] The two clamping plates of the clamping assembly plate of the utility model are provided with round bottom grooves at both ends of the middle joint for accommodating the handle of the flip roller, and the vertical handle in the initial state can be stuck in the round bottom groove.

[0015] In order to facilitate clamping and fixing the shell cover, one clamping plate of the clamping composite plate of the utility model is a through-hole plate with a through hole, and the other clamping plate is a threaded hole plate with a threaded hole, and the two clamping plates are detachably connected by screws.

[0016] The upper surface of the fixed base of the utility model is also provided with limiting components for limiting the outward turning travel of the handle of the turning roller, so as to control the effective distance of the rising center of gravity of the turning roller.

[0017] Preferably, when the handle contacts the limiting component, the center of gravity of the flip roller is at the highest point.

[0018] The utility model has the following beneficial effects:

[0019] The utility model fixes the fuel component base through the fixed base, and after the clamping combination plate clamps the shell cover, when the handle is pulled to make the flip roller flip to the outside of the fixed base, the center of gravity of the flip roller rises and presses against the clamping combination plate, and the clamping combination plate applies external force to the boss of the shell cover, and applies a gentle lifting force to the entire end surface of the boss to separate the shell cover from the fuel component base. During the disassembly process, the lifting force is evenly distributed, and the damage to the base component and the shell cover caused by the local force application method is avoided. The disassembly efficiency is high and the disassembly process is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the connection between the end of the fuel component base and the shell cover in the embodiment;

[0021] Figure 2 yes Figure 1 A perspective rendering showing the location of the internal sealing ring groove;

[0022] Figure 3 It is a three-dimensional diagram of a disassembly device of a boss shell cover of an aircraft fuel component of the utility model in an initial state, and the diagram does not include a clamping assembly plate;

[0023] Figure 4 yes Figure 3 A three-dimensional view of the disassembly device after the flip roller is flipped outward;

[0024] Figure 5 It is a three-dimensional diagram of a disassembly device for a boss shell cover of an aircraft fuel component of the utility model before the shell cover is disassembled;

[0025] Figure 6 It is a front view of a disassembly device for a boss shell cover of an aircraft fuel component of the utility model before the shell cover is disassembled;

[0026] Figure 7 It is a front view of a disassembly device for a boss shell cover of an aircraft fuel component of the utility model when the shell cover is completely disassembled;

[0027] Figure 8 It is an exploded view of the clamping combined plate of the utility model.

[0028] Explanation of the accompanying drawings: 1-fixed base, 2-support foot, 3-base through hole, 4-fastener, 5-flip roller, 6-pin shaft, 7-stop pin, 8-mounting bracket, 9-stop platform, 10-handle, 11-limiting component, 12-clamping combination plate, 12a-through hole plate, 12b-threaded hole plate, 12c-screw, 12d-round bottom groove, 12e-cylindrical hole, 12f-through hole, 12g-threaded hole, 13-base end, 13a-inner threaded hole, 14-shell cover, 15-boss, 16-sealing ring groove. DETAILED DESCRIPTION

[0029] The technical solution of the present utility model is described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can better understand and implement the technical solution of the present utility model.

[0030] like Figure 1 and Figure 2 A shell cover installation structure is shown, in which the end 13 of the fuel component base is provided with a plurality of internal threaded holes 13a, and the inner ring of the shell cover 14 to be removed is sealed with the fuel component base through the sealing rings at the upper and lower sealing ring grooves 16, and the upper and lower end diameters of the inner ring are different, and the lower end inner ring diameter is greater than the upper end inner ring diameter. As long as the shell cover 14 is moved in an upward direction relative to the base end 13, the upper and lower ends are respectively separated from the corresponding sealing rings, and the shell cover 14 can be smoothly withdrawn from the fuel component base to complete the removal.

[0031] like Figures 3 to 8 As shown, a disassembly device for a boss shell cover of an aircraft fuel component comprises:

[0032] A fixed base 1, a support foot 2 is provided at the bottom of the fixed base 1, and a base through hole 3 is provided in the middle of the fixed base 1 for fastening a fastener 4 to lock the end 13 of the aircraft fuel component base from the bottom of the fixed base 1;

[0033] Two flip rollers 5 are symmetrically distributed on both sides of the upper surface of the fixed base 1. A pair of mutually symmetrical pins 6 and a pair of mutually symmetrical stop pins 7 are arranged on the circular end surfaces on both sides of the flip roller 5. A handle 10 is also arranged on the flip roller 5.

[0034] Two groups of mounting brackets 8 are symmetrically fixed on both sides of the upper surface of the fixed base 1, and are respectively used to mount the corresponding flip rollers 5. The pin shaft 6 of the flip roller 5 is rotatably connected to the mounting bracket 8, and a stop platform 9 for limiting and supporting the stop pin 7 is provided on the mounting bracket 8. The pin shaft 6 is eccentrically arranged relative to the circular end surface of the flip roller 5. In the initial state, the stop pin 7 is located on the inner side of the pin shaft 6 and supported on the stop platform 9. When the flip roller 5 flips from the initial state to the outer side of the fixed base 1, the flip roller 5 rotates around the pin shaft 6 to raise the center of gravity of the flip roller 5;

[0035] A clamping assembly plate 12 includes two detachable clamping plates. The middle parts of the two clamping plates are spliced ​​and assembled into a clamping assembly plate having a cylindrical hole 12e matching the shape of the shell cover 14 to be removed. The upper surfaces of the two clamping plates are used to abut the boss 15 of the shell cover 14 to be removed, and the lower surfaces of the two clamping plates are used to abut the cylindrical surface of the flip roller 5.

[0036] As a preferred embodiment:

[0037] In the initial state, the line connecting the center of the pin 6 and the center of the circular end surface of the flip roller 5 is a horizontal line and the handle 10 is in a vertical state.

[0038] The two clamping plates of the clamping assembly plate 12 are provided with round bottom grooves 12d at both ends of the middle joint for circumventing the handle 10 of the flip roller 5. The vertical handle 10 in the initial state can be inserted into the round bottom grooves 12d.

[0039] The upper surface of the fixed base 1 is also provided with limiting components 11 for limiting the outward turning travel of the handle 10 of the turning roller 5, which can control the effective distance of the center of gravity of the turning roller 5. In this embodiment, when the handle 10 contacts the limiting component 11, the center of gravity of the turning roller 5 is at the highest point, wherein the limiting component 11 is a limiting column.

[0040] To facilitate the clamping and fixing of the shell cover, Figure 8 As shown, one of the clamping plates 12 is a through-hole plate 12a with a through hole 12f, and the other clamping plate is a threaded hole plate 12b with a threaded hole 12g. The two clamping plates are detachably connected via a screw 12c.

[0041] The working process of this utility model patent is as follows:

[0042] The embodiment of the present invention takes a simple aircraft fuel component with its upper end portion disassembled as an example for easy understanding.

[0043] (1) At the bottom of the fixed base 1, screw the fasteners 4 through the base through holes 3 into the plurality of threaded holes 13a of the end 13 of the fuel component base, so that the simplified aircraft fuel component whose upper end has been disassembled is locked on the fixed base 1;

[0044] (2) Roll the flip roller 5 toward the inside of the fixed base 1 until the stop pin 7 just contacts the stop platform 9 on the mounting bracket 8. At this time, the center of gravity of the flip roller 5 is low and the two handles 10 are in a vertical state. This is the initial state of the device.

[0045] (3) The clamping assembly plate 12 is split into a through-hole plate 12a and a threaded hole plate 12b, and the lower surfaces of the two clamping plates are respectively and simultaneously in contact with the top of the cylindrical surfaces of the two flip rollers 5, and they are spliced ​​together along a direction parallel to the axis of the flip roller 5. The semicircular notches of the two clamping plates are relatively formed into a cylindrical hole 12e. When the two clamping plates are in contact with each other, two long hexagonal screws 12c are used to lock the two clamping plates from the side to form the clamping assembly plate 12. At this time, the cylindrical hole 12e just clamps the outer ring of the shell cover 14 to clamp the shell cover 14. At the same time, the upper surface of the clamping assembly plate 12 just sticks to the end surface of the boss 15 of the shell cover 14, and the handle 10 in the vertical position just touches the bottom of the round bottom groove 12d.

[0046] (4) Hold the two vertical handles 10 with both hands and apply force in the direction of the notch of the circular bottom groove 12d to flip the two flip rollers 5 toward the outside of the fixed base 1. The center of gravity of the two flip rollers 5 gradually increases, and the top cylindrical surfaces of the two flip rollers 5 generate a continuous symmetrical lifting force on the clamping assembly plate 12. The clamping assembly plate 12 that obtains the continuous lifting force transfers the force to the end face of the boss 15 on the shell cover 14, forming a balanced lifting force on the shell cover 14. When the flip roller 5 rolls until the two handles 10 contact the limiting component 11, the center of gravity of the flip roller 5 reaches the highest point. At this time, the shell cover 14 overcomes the adsorption force of the solidified oil film between the component matrix under the action of the balanced lifting force of the clamping assembly plate 12, and breaks away from the sticky sealing ring in the sealing ring groove 16. The disassembly of the shell cover 14 is completed.

[0047] The above embodiments are only preferred embodiments of the utility model, but cannot be used as limitations of the utility model. Any modifications and improvements based on the concept of the utility model should fall within the protection scope of the utility model. The specific protection scope shall be subject to the claims.

Claims

1. A disassembly device for a boss cover of an aircraft fuel component, characterized in that: include: A fixed base, wherein the bottom of the fixed base is provided with a support foot, and the middle of the fixed base is provided with a base through hole for facilitating a fastener to lock the end of the aircraft fuel component base from the bottom of the fixed base; Two flip rollers are symmetrically distributed on both sides of the upper surface of the fixed base, and the flip rollers are provided with a pair of mutually symmetrical pins and a pair of mutually symmetrical stop pins on the circular end surfaces on both sides, and the flip rollers are also provided with a handle; Two groups of mounting brackets are symmetrically fixed on both sides of the upper surface of the fixed base, and are respectively used to mount the corresponding flip rollers. The pin shaft of the flip roller is rotatably connected to the mounting bracket, and a stop platform for limiting and supporting the stop pin is provided on the mounting bracket. The pin shaft is eccentrically arranged relative to the circular end surface of the flip roller. In the initial state, the stop pin is located at the inner side of the pin shaft and supported on the stop platform. When the flip roller flips from the initial state to the outer side of the fixed base, the flip roller rotates around the pin shaft to make the center of gravity of the flip roller rise. A clamping assembly plate includes two detachable clamping plates. The middle parts of the two clamping plates are spliced ​​and assembled into a clamping assembly plate with a cylindrical hole matching the shape of the shell cover to be removed. The upper surfaces of the two clamping plates are used to abut against the boss of the shell cover to be removed, and the lower surfaces of the two clamping plates are used to abut against the cylindrical surface of the flip roller.

2. The disassembly device for the boss cover of an aircraft fuel component according to claim 1, characterized in that: In the initial state, the line connecting the center of the pin shaft and the center of the circular end surface of the flip roller is a horizontal line and the handle is in a vertical state.

3. The disassembly device for the boss cover of an aircraft fuel component according to claim 2, characterized in that: The two clamping plates of the clamping combined plate are provided with round bottom grooves at both ends of the middle joint for avoiding the handle of the flip roller.

4. The disassembly device for the boss cover of an aircraft fuel component according to claim 3, characterized in that: One clamping plate of the clamping combined plate is a through-hole plate with through holes, and the other clamping plate is a threaded hole plate with threaded holes. The two clamping plates are detachably connected by screws.

5. The disassembly device for the boss cover of an aircraft fuel component according to any one of claims 1 to 4, characterized in that: Limiting components for limiting the outward turning travel of the handle of the turning roller are also arranged on both sides of the upper surface of the fixed base.

6. The disassembly device for the boss cover of an aircraft fuel component according to claim 5, characterized in that: When the handle contacts the limiting component, the center of gravity of the flip roller is at the highest point.

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