Aero-engine low-pressure control valve linear displacement sensor installation tool and method

Abstract

The application discloses an aero-engine low-pressure control valve linear displacement sensor mounting tool and method, and relates to the field of aero-engine part repair.The application has the beneficial effect that: the first positioning mechanism is used for positioning the angle between the mover of the mover assembly in the linear displacement sensor and the sensor support; the second positioning mechanism is used for positioning the installation angle between the mover assembly and the low-pressure control valve; and the problem of time-consuming positioning and inaccurate positioning during the assembly of the mover assembly is solved.

Description

Technical Field

[0001] This invention relates to the field of aircraft engine component repair, specifically to a fixture and method for installing a linear displacement sensor on a low-pressure control valve of an aircraft engine. Background Technology

[0002] The main fuel pump regulator is a core control accessory for aero engines. It is primarily used to precisely, rapidly, and stably control the fuel supply and certain geometric channels of the engine under varying flight altitudes, speeds, atmospheric temperatures, and pressures, ensuring the engine's efficient and stable operation. Its internal structure is complex, and the coordination and cooperation between its components require extremely high precision. Any deviation between these components can significantly impact the overall control and stable operation of the engine. For example, the low-pressure control valve linear displacement sensor of a certain type of main fuel pump regulator is used to control the angle of the low-pressure compressor inlet guide vanes. The assembly angle between the moving and stator components of the linear displacement sensor has strict requirements. If there is an angular deviation between the moving and stator components of the low-pressure control valve linear displacement sensor, it can severely lead to abnormal angle parameters of the low-pressure compressor inlet guide vanes, affecting aircraft combat performance and threatening flight safety.

[0003] The low-pressure control valve linear displacement sensor is divided into a moving part assembly and a stationary part assembly, such as... Figure 1 As shown, the mover assembly consists of a mover and a sensor bracket, which are fixed together by tightening nuts. During assembly, first, fit the hole of the sensor bracket onto the low-pressure control valve, then align the two long rod-shaped ends on the mover and insert them into the corresponding holes of the stator assembly, and finally tighten the fixing nuts between the mover and the sensor bracket with a certain torque.

[0004] In the past, the angle between the sensor bracket hole and the low-pressure control valve, and the angle between the mover and the sensor bracket, were all determined by the assembly personnel's experience. This was time-consuming, inaccurate, and could easily lead to potential quality problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fixture and method for installing a linear displacement sensor for a low-pressure control valve of an aero-engine, so as to solve the problems of time-consuming and inaccurate positioning during the assembly of the mover assembly, which involves two angle positioning installations.

[0006] To solve the above problems, the present invention employs the following technical means:

[0007] A fixture for mounting a linear displacement sensor on a low-pressure control valve of an aero-engine, comprising:

[0008] The first positioning mechanism is used to position the angle between the mover of the mover assembly in the linear displacement sensor and the sensor support.

[0009] The second positioning mechanism is used to position the installation angle between the actuator assembly and the low-pressure control valve.

[0010] The first positioning mechanism includes:

[0011] The mounting plate has a first positioning groove at one end for passing through the rotating connection section between the moving part and the sensor bracket, and a vertically penetrating arc groove at the other end. The arc groove is coaxially arranged with the rotating connection section. The bottom surface of the mounting plate has a bracket limiting plate for limiting the position of the sensor bracket.

[0012] The adjustment mechanism is constructed with a positioning channel for the rotating connecting section to pass through and a clamping part for clamping the insertion part of the mover. The adjustment mechanism is also constructed with an adjustment part that extends into the arc-shaped groove and slides against the inner arc sidewall and the outer arc sidewall of the arc-shaped groove.

[0013] The second positioning mechanism includes a positioning plate. The bottom surface of the positioning plate has a recessed moving part limiting groove. The top surface of the positioning plate is equipped with a moving part limiting block. The moving part limiting block has a vertical limiting channel that communicates with the moving part limiting groove. The plate surface of the positioning plate has a number of positioning holes for engaging with the protruding part on the top surface of the low-pressure control valve.

[0014] Preferably, the first positioning groove is a groove that extends through the mounting plate at both ends and is open on one side. The first positioning groove includes a first semi-circular groove disposed on the mounting plate and a first extension groove that communicates with the first semi-circular groove and is open from the side of the mounting plate. The width of the first extension groove is the same as the diameter of the first semi-circular groove.

[0015] Furthermore, both the inner and outer arc sides of the arc-shaped groove are coaxially arranged with the first semi-circular groove.

[0016] Furthermore, the bracket limiting plate includes an extension plate that is perpendicular to the bottom surface of the mounting plate. A horizontal bearing plate is installed at the bottom end of the extension plate. A second positioning groove for accommodating a cylindrical rod of the sensor bracket is constructed on the side of the bearing plate opposite to the extension plate. A mounting piece for accommodating the sensor bracket is located between the bearing plate and the mounting plate.

[0017] Furthermore, the second positioning groove is a groove that extends through the support plate at both ends and is open on one side. The second positioning groove includes a second semi-circular groove disposed on the support plate and a second extension groove that communicates with the second semi-circular groove and is open from the side of the support plate. The width of the second extension groove is the same as the diameter of the second semi-circular groove.

[0018] Furthermore, the opening of the second positioning groove is on the same plane as the opening of the first positioning groove.

[0019] Furthermore, the adjustment mechanism includes a first clamping mechanism and a second clamping mechanism that engage with each other;

[0020] The first clamping mechanism includes a first clamping block slidably disposed on the top surface of the mounting plate, a first baffle mounted on the top surface of the first clamping block, a first side wall of the first clamping block having a vertically penetrating first semi-column groove, a horizontal swing block serving as the adjustment part mounted on the second side wall of the first clamping block, the bottom surface of the swing block being in contact with the mounting plate, and a limiting mechanism mounted on the bottom surface of the end of the swing block opposite to the first clamping block, the limiting mechanism being slidably disposed within the arc-shaped groove;

[0021] The second clamping mechanism includes a second clamping block slidably disposed on the top surface of the mounting plate, a second baffle is installed on the top surface of the second clamping block, and a vertically penetrating second semi-column groove is constructed on the first side wall of the second clamping block;

[0022] The first half-cylinder groove and the second half-cylinder groove are joined together to form a complete cylindrical groove, which serves as the positioning channel. The first baffle and the second baffle are configured to form a clamping groove, which serves as the clamping part.

[0023] Furthermore, the first clamping block and the second clamping block are detachably connected by horizontal bolts.

[0024] Furthermore, the limiting mechanism includes a slide rod installed at the end of the swing block, the slide rod passing through the arc-shaped groove and abutting against the inner and outer arc walls of the arc-shaped groove, and a locking nut installed at one end of the slide rod extending out of the arc-shaped groove.

[0025] In addition, a method for installing a linear displacement sensor for a low-pressure control valve of an aero-engine, using the aforementioned mounting fixture for the linear displacement sensor of a low-pressure control valve of an aero-engine, includes the following steps:

[0026] S1. Attach the mounting plate of the sensor bracket to the spacer plate and the mounting plate, and embed the cylindrical rod of the sensor bracket into the second positioning groove, and align the through hole of the rotating connecting section on the sensor bracket for mounting the mover with the first positioning groove on the mounting plate.

[0027] S2. Install the rotating connecting section of the mover into the sensor bracket and make the rotating connecting section snap into the first positioning groove so that the rotating connecting section is completely in contact with the first semi-circular groove of the first positioning groove. Adjust the first clamping mechanism and the second clamping mechanism, and use the positioning channel formed by the splicing of the first clamping mechanism and the second clamping mechanism to clamp the rotating connecting section of the mover. At the same time, let the first baffle and the second baffle stably clamp the insertion part of the mover. Use bolts to stably position the first clamping mechanism and the second clamping mechanism.

[0028] S3. Keep the sensor bracket in position, loosen the locking nut on the adjustment part, and then turn the slide bar of the adjustment part to move the slide bar in the arc groove, so that the clamped moving part and the sensor bracket rotate relative to each other about the axis of rotation of the rotating connection section, so as to accurately adjust the angle between the moving part and the sensor bracket before the sensor is assembled.

[0029] S4. After the mover and sensor bracket are adjusted, fix the mover and sensor bracket with the positioning nut, then disassemble the entire first positioning mechanism, assemble the round hole of the sensor bracket onto the low-pressure control valve, insert the long rod-shaped end of the mover into the limiting channel of the second positioning mechanism, and let the insertion part of the mover embed into the mover limiting groove of the second positioning mechanism. Adjust the position of the second positioning mechanism as a whole, so that the sensor bracket rotates around the axis of its round hole. When the positioning hole engages with the protruding part on the top surface of the low-pressure control valve, the mover assembly completes the fixed angle assembly of the mover and sensor bracket and the fixed angle assembly of the mover assembly and the top surface of the low-pressure control valve.

[0030] S5. Finally, assemble the moving part assembly and the stationary part assembly to complete the overall assembly of the linear displacement sensor for the low-pressure control valve of the aero-engine.

[0031] The present invention has the following beneficial effects during use:

[0032] Using this device and method to install a linear displacement sensor allows for precise positioning of the end angle of the sensor's moving part assembly, preventing misalignment. Before installing the moving part assembly onto the product, a suitable assembly angle between the moving part and the sensor bracket is achieved, significantly improving assembly efficiency while ensuring the installation accuracy of the moving and stationary components. This enables accurate and rapid positioning when assembling linear displacement sensors for low-pressure control valves, solving the problems of time-consuming and inaccurate double angle positioning in this process. The average assembly time per unit is reduced from 30 minutes to 10 minutes, while maintaining the installation accuracy of the moving and stationary components and reducing quality risks. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the moving part component.

[0034] Figure 2 This is a schematic diagram of the assembly structure of the moving part and the first positioning mechanism.

[0035] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure.

[0036] Figure 4 This is a schematic diagram of the first positioning mechanism of the present invention.

[0037] Figure 5 for Figure 4 A top-view cross-sectional structural diagram.

[0038] Figure 6 This is a schematic diagram of the second positioning mechanism of the present invention.

[0039] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure.

[0040] Figure 8 This is a schematic diagram of the assembly structure of the moving part and the second positioning mechanism.

[0041] Figure 9 for Figure 8 A schematic diagram of the cross-sectional structure.

[0042] Figure 10 This is a schematic diagram of the mounting plate structure.

[0043] Figure 11 This is a schematic diagram of the first clamping mechanism of the present invention.

[0044] Figure 12 This is a schematic diagram of the second clamping mechanism of the present invention.

[0045] Among them, 1-moving element, 2-sensor bracket, 3-mounting plate, 4-first positioning groove, 5-rotation connecting section, 6-arc groove, 7-bracket limiting plate, 8-positioning plate, 9-moving element limiting block, 10-limiting channel, 11-positioning hole, 12-first semi-circular groove, 13-first extension groove, 14-extension plate, 15-bearing plate, 16-second positioning groove, 17-mounting piece, 18-second semi-circular groove, 19-second extension groove, 20-first clamping block, 21-first baffle, 22-first semi-column groove, 23-swinging block, 24-second clamping block, 25-second baffle, 26-second semi-column groove, 27-bolt, 28-slide rod, 29-locking nut. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] Please refer to Figures 1 to 12 As shown, a mounting fixture for a linear displacement sensor of a low-pressure control valve for an aero-engine includes:

[0053] The first positioning mechanism is used to position the angle between the mover 1 of the mover assembly in the linear displacement sensor and the sensor support 2.

[0054] The second positioning mechanism is used to position the installation angle between the actuator 1 assembly and the low-pressure control valve.

[0055] The first positioning mechanism includes:

[0056] Mounting plate 3 has a first positioning groove 4 at one end for passing through the rotating connection section 5 between the moving part 1 and the sensor bracket 2, and a vertically penetrating arc groove 6 at the other end. The arc groove 6 is coaxially arranged with the rotating connection section 5. The bottom surface of mounting plate 3 has a bracket limiting plate 7 for limiting the sensor bracket 2.

[0057] The adjustment mechanism is constructed with a positioning channel for the rotating connecting section 5 to pass through and a clamping part for clamping the insertion part of the moving part 1. The adjustment mechanism is also constructed with an adjustment part that extends into the arc-shaped groove 6 and slides against the inner arc sidewall and outer arc sidewall of the arc-shaped groove 6.

[0058] The second positioning mechanism includes a positioning plate 8. The bottom surface of the positioning plate 8 is constructed with a recessed moving part 1 limiting groove. The top surface of the positioning plate 8 is equipped with a moving part limiting block 9. The moving part limiting block 9 is provided with a vertical limiting channel 10 that communicates with the moving part 1 limiting groove. The plate surface of the positioning plate 8 is constructed with a plurality of positioning holes 11 for engaging with the protruding part on the top surface of the low-pressure control valve.

[0059] In this embodiment, before the sensor is installed into the low-pressure control valve of the air engine, the first positioning mechanism can be used to position and assemble the rotor 1 and sensor bracket 2 at the correct angles. Furthermore, the second positioning mechanism is used to adjust and limit the installation angle of the sensor bracket 2 on the low-pressure control valve, thereby ensuring the angle between the rotor 1 assembly and the low-pressure control valve after installation. After quickly adjusting the angles between the rotor 1 and sensor bracket 2, and between the rotor 1 assembly and the low-pressure control valve using the first and second positioning mechanisms, the stator assembly can be installed quickly and accurately. This allows for the rapid and accurate assembly of the entire sensor system with the low-pressure control valve of the air engine.

[0060] Specifically, the first positioning groove 4 on the mounting plate 3 is used to pass through the rotating connection section 5 between the mover 1 and the sensor bracket 2. The first positioning groove 4 is a groove that passes through the mounting plate 3 at both ends and is open on one side. The first positioning groove 4 includes a first semi-circular groove 12 provided on the mounting plate 3 and a first extension groove 13 that communicates with the first semi-circular groove 12 and is open from the side of the mounting plate 3. The width of the first extension groove 13 is the same as the diameter of the first semi-circular groove 12.

[0061] Thus, by utilizing the function of the first positioning groove 4, the rotating connecting section 5 of the mover 1 is stably limited, and by utilizing the open structure on the side of the first positioning groove 4, the rotating connecting part can be quickly removed from the mounting plate 3 after the mover 1 and the sensor bracket 2 are installed.

[0062] Furthermore, in order to ensure that the rotor can rotate accurately during the movement of the adjustment part along the arc groove 6, the rotation connection part is first made to fit against the first arc groove 6 when assembling the rotation connection part with the mounting plate 3. At the same time, the inner arc side and the outer arc side of the arc groove 6 are coaxially arranged with the first semi-circular groove 12.

[0063] Furthermore, for the installation of the sensor bracket 2, the bracket limiting plate 7 for installing the sensor bracket 2 includes an extension plate 14 that is perpendicular to the bottom surface of the mounting plate 3. A horizontal bearing plate 15 is installed at the bottom end of the extension plate 14. A second positioning groove for accommodating the cylindrical rod of the sensor bracket 2 is constructed on the side of the bearing plate 15 opposite to the extension plate 14. A mounting piece 17 for accommodating the sensor bracket 2 is located between the bearing plate 15 and the mounting plate 3.

[0064] Furthermore, the second positioning groove 16 is a groove that passes through the support plate 15 at both ends and is open on one side. The second positioning groove 16 includes a second semi-circular groove 18 provided on the support plate 15 and a second extension groove 19 that communicates with the second semi-circular groove 18 and is open from the side of the support plate 15. The width of the second extension groove 19 is the same as the diameter of the second semi-circular groove 18.

[0065] Furthermore, the opening of the second positioning groove 16 and the opening of the first positioning groove 4 are located on the same plane.

[0066] For the adjustment mechanism used to adjust the rotor angle, the adjustment mechanism includes a first clamping mechanism and a second clamping mechanism that engage with each other;

[0067] The first clamping mechanism includes a first clamping block 20 slidably disposed on the top surface of the mounting plate 3. A first baffle 21 is installed on the top surface of the first clamping block 20. A vertically penetrating first semi-column groove 22 is constructed on the first side wall of the first clamping block 20. A horizontal swing block 23 serving as the adjustment part is installed on the second side wall of the first clamping block 20. The bottom surface of the swing block 23 is in contact with the mounting plate 3. A limiting mechanism is installed on the bottom surface of the swing block 23 opposite to the first clamping block 20. The limiting mechanism is slidably disposed in the arc-shaped groove 6.

[0068] The second clamping mechanism includes a second clamping block 24 slidably disposed on the top surface of the mounting plate 3, a second baffle 25 is installed on the top surface of the second clamping block 24, and a vertically penetrating second semi-column groove 26 is constructed on the first side wall of the second clamping block 24.

[0069] The first semi-cylindrical groove 22 and the second semi-cylindrical groove 26 are joined together to form a complete cylindrical groove, which serves as the positioning channel. The first baffle 21 and the second baffle 25 are configured to form a clamping groove, which serves as the clamping part.

[0070] Furthermore, the first clamping block 20 and the second clamping block 24 are detachably connected by horizontal bolts 27.

[0071] Furthermore, the limiting mechanism includes a slide rod 28 installed at the end of the swing block 23. The slide rod 28 passes through the arc groove 6 and abuts against the inner and outer arc walls of the arc groove 6. A locking nut 29 is installed at one end of the slide rod 28 that extends out of the arc groove 6.

[0072] Specifically, a method for installing a linear displacement sensor for a low-pressure control valve of an aero-engine, using the aforementioned mounting fixture for the linear displacement sensor of a low-pressure control valve of an aero-engine, includes the following steps:

[0073] S1. Snap the mounting piece 17 of the sensor bracket 2 between the support plate 15 and the mounting plate 3, and embed the cylindrical rod of the sensor bracket 2 into the second positioning groove 16, and align the through hole of the rotating connecting section 5 on the sensor bracket 2 for mounting the mover 1 with the first positioning groove 4 on the mounting plate 3.

[0074] S2. Insert the rotating connecting section 5 of the mover 1 into the sensor bracket 2, and make the rotating connecting section 5 snap into the first positioning groove 4, so that the rotating connecting section 5 is completely in contact with the first semi-circular groove 12 of the first positioning groove 4. Adjust the first clamping mechanism and the second clamping mechanism, and use the positioning channel formed by the splicing of the first clamping mechanism and the second clamping mechanism to clamp the rotating connecting section 5 of the mover 1. At the same time, let the first baffle 21 and the second baffle 25 stably clamp the insertion part of the mover 1. Use bolts 27 to stably position the first clamping mechanism and the second clamping mechanism.

[0075] S3. Keep the sensor bracket 2 in position, loosen the locking nut 29 on the adjustment part, and then move the slide rod 28 of the adjustment part to move the slide rod 28 in the arc groove 6, so that the clamped moving part 1 and the sensor bracket 2 rotate relative to each other with the axis of rotation of the rotating connecting section 5 as the axis of rotation. Thus, before the sensor is assembled, the angle between the moving part 1 and the sensor bracket 2 can be accurately adjusted. Specifically, at the position of the mounting plate 3 corresponding to the arc groove 6, a mark is set along one side of the outer arc surface or inner arc surface of the arc groove 6. Slide the slide rod 28 to the mark to complete the accurate positioning.

[0076] S4. After the movement 1 and sensor bracket 2 are adjusted, fix the movement 1 and sensor bracket 2 with the positioning nut, then disassemble the entire first positioning mechanism, assemble the round hole of the sensor bracket 2 onto the low-pressure control valve, insert the long rod-shaped end of the movement 1 into the limiting channel 10 of the second positioning mechanism, and let the insertion part of the movement 1 be embedded in the movement 1 limiting groove of the second positioning mechanism. Adjust the position of the second positioning mechanism as a whole, so that the sensor bracket 2 rotates around the axis of its round hole. When the positioning hole 11 engages with the protruding part on the top surface of the low-pressure control valve, the movement 1 assembly completes the fixed angle assembly of the movement 1 and sensor bracket 2 and the fixed angle assembly of the movement 1 assembly with the top surface of the low-pressure control valve.

[0077] S5. Finally, assemble the moving part 1 assembly with the stationary part assembly to complete the overall assembly of the linear displacement sensor for the low-pressure control valve of the aero-engine.

[0078] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An aircraft engine low pressure control valve wire displacement sensor installation tool, characterized by, include: The first positioning mechanism is used to position the angle between the mover (1) of the mover assembly in the linear displacement sensor and the sensor support (2); The second positioning mechanism is used to position the installation angle between the actuator assembly and the low-pressure control valve. The first positioning mechanism includes: The mounting plate (3) has a first positioning groove (4) at one end for passing through the rotating connection section (5) between the mover (1) and the sensor bracket (2), and a vertically penetrating arc groove (6) at the other end. The arc groove (6) is coaxially arranged with the rotating connection section (5). The bottom surface of the mounting plate (3) has a bracket limiting plate (7) for limiting the sensor bracket (2). The adjustment mechanism is constructed with a positioning channel through which the rotating connecting section (5) passes and a clamping part for clamping the insertion part of the moving part (1). The adjustment mechanism is also constructed with an adjustment part that extends into the arc groove (6) and slides against the inner arc sidewall and outer arc sidewall of the arc groove (6). The second positioning mechanism includes a positioning plate (8), the bottom surface of which has a recessed moving part (1) limiting groove, the top surface of which is equipped with a moving part limiting block (9), the moving part limiting block (9) has a vertical limiting channel (10) communicating with the moving part (1) limiting groove, and the plate surface of the positioning plate (8) has a plurality of positioning holes (11) for engaging with the protruding part on the top surface of the low-pressure control valve.

2. The low pressure control valve linear displacement sensor installation tooling for an aero-engine as claimed in claim 1, wherein, The first positioning groove (4) is a groove that passes through the mounting plate (3) at both ends and is open on one side. The first positioning groove (4) includes a first semi-circular groove (12) provided on the mounting plate (3) and a first extension groove (13) that communicates with the first semi-circular groove (12) and is open from the side of the mounting plate (3). The width of the first extension groove (13) is the same as the diameter of the first semi-circular groove (12).

3. The mounting fixture for the linear displacement sensor of the low-pressure control valve of an aero-engine according to claim 2, characterized in that, The inner and outer arc sides of the arc groove (6) are coaxially arranged with the first semi-circular groove (12).

4. The aircraft engine low pressure control valve linear displacement sensor installation tool of Claim 1, wherein, The bracket limiting plate (7) includes an extension plate (14) that is perpendicular to the bottom surface of the mounting plate (3). A horizontal bearing plate (15) is installed at the bottom end of the extension plate (14). A second positioning groove (16) for accommodating the cylindrical rod of the sensor bracket (2) is constructed on the side of the bearing plate (15) opposite to the extension plate (14). A mounting piece (17) for accommodating the sensor bracket (2) is located between the bearing plate (15) and the mounting plate (3).

5. The aero-engine low pressure control valve linear displacement sensor installation tooling of claim 4, wherein, The second positioning groove (16) is a groove that passes through the bearing plate (15) at both ends and is open on one side. The second positioning groove (16) includes a second semi-circular groove (18) provided on the bearing plate (15) and a second extension groove (19) that communicates with the second semi-circular groove (18) and is open from the side of the bearing plate (15). The width of the second extension groove (19) is the same as the diameter of the second semi-circular groove (18).

6. The aero-engine low pressure control valve linear displacement sensor installation tooling of claim 4 or 5, wherein, The opening of the second positioning groove (16) and the opening of the first positioning groove (4) are located on the same plane.

7. The aero-engine low pressure control valve linear displacement sensor installation tooling of claim 1, wherein, The adjustment mechanism includes a first clamping mechanism and a second clamping mechanism that are interlocked with each other; The first clamping mechanism includes a first clamping block (20) slidably disposed on the top surface of the mounting plate (3). A first baffle (21) is installed on the top surface of the first clamping block (20). A vertically penetrating first semi-column groove (22) is constructed on the first side wall of the first clamping block (20). A horizontal swing block (23) serving as the adjustment part is installed on the second side wall of the first clamping block (20). The bottom surface of the swing block (23) is in contact with the mounting plate (3). A limiting mechanism is installed on the bottom surface of the swing block (23) opposite to the first clamping block (20). The limiting mechanism is slidably disposed in the arc groove (6). The second clamping mechanism includes a second clamping block (24) slidably disposed on the top surface of the mounting plate (3), a second baffle (25) is installed on the top surface of the second clamping block (24), and the first side wall of the second clamping block (24) is constructed with a vertically penetrating second semi-column groove (26). The first semi-cylindrical groove (22) and the second semi-cylindrical groove (26) are spliced ​​together to form a complete cylindrical groove, which serves as the positioning channel. The first baffle (21) and the second baffle (25) are constructed to form a clamping groove, which serves as the clamping part.

8. The aircraft engine low pressure control valve linear displacement sensor installation tool of Claim 7, wherein, The first clamping block (20) and the second clamping block (24) are detachably connected by horizontal bolts (27).

9. The aero-engine low pressure control valve linear displacement sensor installation tooling of claim 7 or 8, wherein, The limiting mechanism includes a slide rod (28) installed at the end of the swing block (23). The slide rod (28) passes through the arc groove (6) and abuts against the inner and outer arc walls of the arc groove (6). A locking nut (29) is installed at one end of the slide rod (28) extending out of the arc groove (6).

10. An aircraft engine low pressure control valve wire displacement sensor installation method, characterized by, The mounting fixture for the linear displacement sensor of the low-pressure control valve of an aero-engine, as described in any one of claims 1 to 9, includes the following steps: S1. Snap the mounting piece (17) of the sensor bracket (2) between the support plate (15) and the mounting plate (3), and let the cylindrical rod of the sensor bracket (2) be embedded in the second positioning groove (16), and let the through hole of the rotating connecting section (5) on the sensor bracket (2) for mounting the mover (1) be aligned with the first positioning groove (4) on the mounting plate (3). S2. Insert the rotating connecting section (5) of the mover (1) into the sensor bracket (2) and make the rotating connecting section (5) snap into the first positioning groove (4) so ​​that the rotating connecting section (5) and the first semi-circular groove (12) of the first positioning groove (4) are completely fitted. Adjust the first clamping mechanism and the second clamping mechanism, and use the positioning channel formed by the splicing of the first clamping mechanism and the second clamping mechanism to clamp the rotating connecting section (5) of the mover (1). At the same time, let the first baffle (21) and the second baffle (25) stably clamp the insertion part of the mover (1). Use bolts (27) to stably position the first clamping mechanism and the second clamping mechanism. S3. Keep the sensor bracket (2) in position, loosen the locking nut (29) on the adjustment part, and then move the slide bar (28) of the adjustment part to move the slide bar (28) in the arc groove (6), so that the clamped moving part (1) and the sensor bracket (2) rotate relative to each other with the axis of rotation of the rotating connecting section (5) as the axis of rotation, so that the angle between the moving part (1) and the sensor bracket (2) can be accurately adjusted before the sensor is assembled. S4. After the movement (1) and sensor bracket (2) are adjusted, the movement (1) and sensor bracket (2) are fixed by the positioning nut. Then the entire first positioning mechanism is disassembled, the round hole of the sensor bracket (2) is assembled onto the low-pressure control valve, the long rod end on the movement (1) is inserted into the limiting channel (10) of the second positioning mechanism, and the insertion part of the movement (1) is embedded into the movement (1) limiting groove of the second positioning mechanism. The position of the second positioning mechanism is adjusted as a whole, so that the sensor bracket (2) rotates around the axis of its round hole. When the positioning hole (11) engages with the protruding part on the top surface of the low-pressure control valve, the movement assembly completes the fixed angle assembly of the movement (1) and sensor bracket (2) and the fixed angle assembly of the movement assembly and the top surface of the low-pressure control valve. S5. Finally, assemble the moving part assembly and the stationary part assembly to complete the overall assembly of the linear displacement sensor for the low-pressure control valve of the aero-engine.

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