An apparatus for horizontal assembly of an aircraft engine fan assembly

Abstract

A device for horizontal assembly of an aero-engine fan assembly, comprising a chassis assembly, and a clamping assembly for clamping the fan assembly, a supporting plate is arranged on the top of the chassis assembly; and the supporting plate is connected with the chassis assembly through a sliding mechanism so that the supporting plate can move along the X direction; a rotating disc and a lifting mechanism are arranged on the supporting plate; the rotating disc can rotate around its vertical axis, and the lifting mechanism is used for driving the rotating disc to perform lifting movement; a fixed base plate is arranged on the rotating disc, a sliding base plate is arranged on the top of the fixed base plate; and a driving mechanism is arranged between the fixed base plate and the sliding base plate, used for driving the sliding base plate to move back and forth along the long direction of the fixed base plate; a semi-ring-shaped ring track is slidably installed on the sliding base plate through a plurality of supporting seats, and the ring track can rotate around its axis A; the clamping assembly is installed on the top of both sides of the ring track through a rotating shaft, and the clamping assembly can rotate around the axis of the rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of aircraft engine assembly technology, and in particular to a device for horizontal assembly of aircraft engine fan components. Background Technology

[0002] Horizontal assembly of an aero-engine refers to the installation and connection of the various components that make up the engine. When the basic components of the engine assembly are docked and connected with other components to be installed, their axes are in a horizontal state. The horizontal assembly process requires the use of specific tooling fixtures to overcome the effect of gravity and align the axes of the components.

[0003] Compared to the currently common vertical assembly process for aero engines in China, the horizontal assembly process has advantages such as smaller operating space requirements and higher assembly efficiency. It is more suitable for the extremely limited space on the decks and hangars of aircraft carriers and amphibious assault ships, and can meet the requirements of maintaining and repairing aero engines within the projected area of ​​carrier-based fighter jets. However, to achieve horizontal centering of the fan assembly, the spatial structure of the fan rotor itself presents challenges such as difficulty in axial and radial positioning of the rotor and stator, and high positioning accuracy. In addition, existing auxiliary assembly devices cannot adjust the pitch angle or circumferential position of the fan assembly. Summary of the Invention

[0004] The main objective of this invention is to provide a device for the horizontal assembly of aero-engine fan assemblies, thereby addressing the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention proposes a device for horizontal assembly of an aircraft engine fan assembly, comprising a chassis assembly and a clamping assembly for clamping the fan assembly. A support plate is provided on the top of the chassis assembly; the support plate is connected to the chassis assembly via a sliding mechanism, allowing the support plate to move along the X direction; a turntable and a lifting mechanism are provided on the support plate; the turntable can rotate around its own vertical axis, and the lifting mechanism is used to drive the turntable to move up and down; a fixed seat plate is provided on the turntable, and a sliding seat plate is provided on the top of the fixed seat plate; a driving mechanism is provided between the fixed seat plate and the sliding seat plate, used to drive the sliding seat plate to move back and forth along the longitudinal direction of the fixed seat plate; a semi-circular ring rail is slidably mounted on the sliding seat plate via multiple support seats, and the ring rail can rotate around its own axis A; the clamping assembly is mounted on the top ends of both sides of the ring rail via a rotating shaft, and the clamping assembly can rotate around the axis of the rotating shaft.

[0006] Preferably, the chassis assembly is a frame structure consisting of two spaced-apart inverted U-shaped support frames; each inverted U-shaped support frame includes a crossbeam and columns at both ends of the crossbeam; the crossbeams of the two inverted U-shaped support frames are connected by two spaced-apart connecting beams; the sliding mechanism includes a guide rail mounted on the top of the connecting beam and a slider mounted on the bottom surface of the support plate; the slider slides in cooperation with the guide rail; a top seat is provided on each column, the top seat including a threaded rod screwed into a threaded hole in the column, a top plate located at the inner end of the threaded rod, and a handle rod located at the outer end of the threaded rod; the threaded rod is arranged parallel to the Y direction.

[0007] Preferably, the turntable is mounted on the tray via a bottom shell; the bottom shell has an open-topped inner cavity; a retaining ring is integrally formed at the outer edge of the opening of the bottom shell; a stepped through hole is provided at the center of the tray; the bottom shell is inserted into the stepped through hole of the tray, and the lower surface of the retaining ring abuts against the stepped surface of the stepped through hole; the turntable is rotatably mounted in the inner cavity of the bottom shell, and a plurality of universal balls are provided on the outer circumferential surface of the turntable, and the universal balls are in rolling contact with the inner wall of the bottom shell.

[0008] Preferably, a stop mechanism is provided on the tray to stop the turntable; the stop mechanism includes a mounting block, a V-shaped crank arm, a stop rod, and a first stop screw; the mounting block is fixedly mounted on the tray; the middle part of the V-shaped crank arm is rotatably mounted on the tray; the first stop screw is horizontally screwed onto the mounting block, and the inner end of the first stop screw is hinged to the first end of the V-shaped crank arm, and a rotating handle is provided on the outer end of the first stop screw; the outer end of the stop rod is hinged to the second end of the V-shaped crank arm, and the inner end of the stop rod is slidably inserted into the radial through hole of the retaining ring; the end face of the inner end of the stop rod can abut against the outer circumferential surface of the turntable; a second stop screw is vertically screwed onto the mounting block, and a rotating handle is provided at the top of the second stop screw. When the second stop screw is rotated to move downwards, the lower end of the second stop screw can abut against the sliding mechanism to achieve the stop function of the tray.

[0009] Preferably, the lifting mechanism includes an externally threaded shaft, an internally threaded sleeve, and a first bevel gear and a second bevel gear meshing with each other within the inner cavity of the bottom shell; the internally threaded sleeve is disposed in the inner hole of the turntable, and the outer circumferential surface of the internally threaded sleeve forms a rotational fit with the inner hole of the turntable; a limiting ring is integrally formed at the lower end of the internally threaded sleeve, and a retaining ring is disposed at the top end of the internally threaded sleeve; the turntable is located between the limiting ring and the retaining ring; the lower end of the externally threaded shaft is inserted into the through hole of the first bevel gear and connected by a flat key; the upper section of the externally threaded shaft... The external thread mates with the threaded hole of the internal thread sleeve; a first rod seat is provided on the bottom surface of the support plate, and a second rod seat is provided on the bottom wall of the inner cavity of the bottom shell; a gear rod that can rotate around its own axis is inserted between the first rod seat and the second rod seat; the inner end of the gear rod is connected to the second bevel gear, and the outer end is provided with a first handwheel; an anti-rotation plate is fixedly provided at the bottom end of the internal thread sleeve, and a vertical anti-rotation rod is provided on the bottom wall of the bottom shell, the upper end of the anti-rotation rod is a smooth rod structure, and extends upward to be inserted into the hole of the anti-rotation plate.

[0010] Preferably, a guide plate is provided on the top surface of the fixed seat plate, and a slide bar is fixedly connected to the bottom surface of the sliding seat plate; the slide bar is slidably installed in a groove formed between the guide plate and the fixed seat plate; the driving mechanism between the fixed seat plate and the sliding seat plate includes a driving rod, a screw seat, and a sleeve seat; a second handwheel is provided at both ends of the driving rod; the sleeve seat is sleeved on the driving rod near both ends, and the outer cylindrical surface of the driving rod forms a rotational fit with the inner hole of the sleeve seat; an annular groove is provided on the driving rod, and a limiting pin is provided on the sleeve seat, with the inner end of the limiting pin extending into the annular groove; a connecting plate is fixedly connected to the sleeve seat, and the connecting plate is fixedly installed on the sliding seat plate; the screw seat is fixedly installed on the fixed seat plate; a threaded section is provided in the middle of the driving rod; and the threaded section is screwed into the threaded hole of the screw seat.

[0011] Preferably, each support base includes two support plates fixedly installed on the sliding seat plate, and a support rod is provided between the two support plates; an arc-shaped hole is provided on the ring rail corresponding to the position of each support base, the support rod is inserted into the arc-shaped hole, and the outer cylindrical surface of the support rod slides in cooperation with the upper and lower arc-shaped surfaces of the arc-shaped hole; a stop pin is screwed onto the support plate of the support base to tighten the ring rail, so as to realize the stop function of the ring rail.

[0012] Preferably, the rotating shaft is installed at the top of the ring rail via a rotating shaft seat and a rotating shaft cover; a slot is provided on the rotating shaft seat; the top of the ring rail is inserted into the slot and fixed with bolts; the rotating shaft cover is fixedly installed on the top of the rotating shaft seat with screws; the rotating shaft is rotatably installed in the rotating shaft mounting hole formed by the rotating shaft cover and the rotating shaft seat; a friction block is provided on the top of the rotating shaft cover; a brake block is provided in the inner hole of the rotating shaft; an inverted conical hole is provided on the rotating shaft cover; a stop rod is provided on the friction block, the lower end of which extends downward and passes through the conical hole and the tube wall of the rotating shaft in sequence before being threadedly connected to the brake block; a stop handle is horizontally inserted at the top of the stop rod for rotating the stop rod; a stepped surface is provided on the stop rod for abutting against the top surface of the friction block; the diameter of the lowest end of the conical hole is larger than the outer diameter of the stop rod to form a swing space for the stop rod.

[0013] Preferably, the clamping assembly includes a mounting plate and support arms fixedly disposed at both ends of the mounting plate; the mounting plate and the two support arms together form a U-shaped support structure; the inner end of the rotating shaft is inserted into the support arm and fixed by a pin; a support claw is provided at the end of the support arm away from the mounting plate for connecting with the mounting edge of the fan stator casing; a positioning seat is fixedly installed on the right end face of the mounting plate, and a stepped limiting boss is provided on the right end face of the positioning seat, the limiting boss is used to be inserted into the inner hole of the journal of the fan stator, and the stepped surface of the limiting boss is used to abut against the end face of the journal of the fan stator; a plurality of stepped through holes are evenly distributed in a ring on the positioning seat, and a sleeve nut is provided in the stepped through hole for connecting with the stud on the fan stator; a T-shaped handle is connected to the sleeve nut.

[0014] Preferably, the clamping assembly further includes a support column assembly for supporting the fan rotor. This support column assembly includes a movable sleeve and a hollow outer column slidably inserted into the inner hole of the movable sleeve. The movable sleeve is mounted on the center holes of both the mounting plate and the positioning seat, and the outer cylindrical surface of the movable sleeve slides in conjunction with their center holes. An axial limiting structure is provided between the movable sleeve and the mounting plate to limit the axial position of the movable sleeve. The right end of the movable sleeve has an external thread section for connecting with the internal thread of the fan rotor's journal. Multiple first rotating... The hollow outer column has a columnar base welded to its right end and an adapter welded to its left end. A ring spline is installed on the right end of the columnar base to mate with the fan nut in the inner hole of the fan rotor. The columnar base is a hollow tubular structure with multiple strip grooves evenly distributed on its wall. A movable support plate is provided in each strip groove, and the right end of the movable support plate is hinged to the columnar base by a pin. A support plate drive structure is provided in the central through hole formed by the hollow outer column, the columnar base, and the adapter to drive the movable support plate to rotate around the pin, so that the left end of the movable support plate is supported in the inner hole of the fan rotor.

[0015] Preferably, a first handle seat is fixedly connected to the left end of the adapter, and multiple second rotating handles are provided on the first handle seat; the support plate driving structure includes a sliding body, an inner column, an external threaded rod, and multiple connecting rods; a connecting rod is correspondingly provided in each slot; the sliding body is slidably installed in the inner hole of the columnar seat; the external threaded rod is provided in the inner hole of the adapter; the inner column is provided in the inner hole of the hollow outer column, and the left end of the inner column is fixedly connected to the external threaded rod, and the right end of the inner column is fixedly connected to the sliding body; the connecting rods The left end is hinged to the sliding body, and the right end of the connecting rod is hinged to the left end of the movable support plate; the left end of the external threaded rod extends from inside the adapter seat and is screwed with a drive nut; the first handle seat is sleeved on the outside of the drive nut, and a limiting protrusion ring is integrally formed on the outer circumference of the right end of the drive nut, and the left end face of the first handle seat and the adapter seat together form an annular mounting groove; the limiting protrusion ring on the right end of the drive nut can be rotatably installed in the annular mounting groove; a second handle seat is fixed to the drive nut, and multiple third rotating handles are provided on the second handle seat.

[0016] Preferably, a limiting shaft is inserted into the inner hole at the right end of the cylindrical base, and a stepped ring is integrally formed on the outer circumferential surface of the limiting shaft; the annular spline is sleeved on the limiting shaft and is pressed against the left end face of the cylindrical base by the stepped ring; the limiting shaft and the cylindrical base are fastened together by multiple slotted conical screws; a guide sleeve is sleeved on the outer cylindrical surface of the right section of the limiting shaft, and a right end cap is provided on the right end face of the limiting shaft and locked by screws; the right end cap pushes the guide sleeve to press against the stepped ring.

[0017] Preferably, the axial limiting structure between the movable sleeve and the mounting plate includes an axial limiting groove on the outer cylindrical surface of the movable sleeve and a plurality of limiting blocks on the left end face of the mounting plate; the limiting blocks have limiting teeth, and the limiting teeth extend into the axial limiting groove, the width of the limiting teeth being smaller than the width of the axial limiting groove.

[0018] Preferably, an axial limiting boss is integrally formed on the external threaded shaft, and the lower end face of the axial limiting boss abuts against the top surface of the first bevel gear; a through hole is provided at the bottom of the bottom shell, and a lower end cover is fixedly installed at the through hole; a stepped through hole is provided at the center of the lower end cover, the lower end of the external threaded shaft extends into the stepped through hole of the lower end cover, and a lower limiting plate is provided on the lower end face of the external threaded shaft; the upper end face of the lower limiting plate can abut against the stepped surface of the stepped through hole of the lower end cover to restrict the upward movement of the external threaded shaft; the outer circumferential surface of the lower end of the external threaded shaft forms a clearance fit with the stepped through hole of the lower end cover; an upper limiting plate is provided at the top end of the external threaded shaft extending upward and protruding from the inner hole of the retaining ring, and the diameter of the upper limiting plate is larger than the inner hole diameter of the retaining ring.

[0019] Preferably, the device further includes a disassembly assembly for disassembling the fan assembly from the main unit; the disassembly assembly includes a frame and a movable block slidably mounted inside the frame; a drive screw is provided on the frame, and the drive screw is threadedly engaged with the movable block for driving the movable block to move in the X direction within the frame; a rotary handle is provided on the drive screw; two pull rods are provided on the movable block, and the end of the pull rod away from the movable block is connected to the mounting plate; support rods are provided at both ends of the frame; and the support rods are located on the outer side of the support arm, with a clamp at the end of the support rod for connecting to the main unit frame.

[0020] Preferably, a plurality of limiting rods are provided on the first handle seat, and a limiting sleeve is movably sleeved on each limiting rod; a spring is sleeved on the limiting rod, and one end of the spring is connected to the bottom wall of the inner cavity of the limiting sleeve, and the other end is connected to the limiting head at the right end of the limiting rod; the spring is in a stretched and energy-storing state, forming a force along the positive X direction to push the limiting sleeve against the left end face of the movable sleeve.

[0021] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0022] (1) By employing the device for horizontal assembly of aero-engine fan components provided by the present invention, after the fan component is clamped, the support plate and the chassis assembly are connected by a sliding mechanism, allowing the support plate to move along the X direction, thus indirectly adjusting the position of the fan component in the X direction. Furthermore, since a turntable and a lifting mechanism are provided on the support plate, the turntable can rotate around its vertical axis, and the lifting mechanism drives the turntable to move up and down, thus indirectly driving the entire fan component to rotate around the axis of the turntable and to move up and down. Additionally, since a driving mechanism is provided between the fixed base plate and the sliding base plate, driving the sliding base plate to move back and forth along the longitudinal direction of the fixed base plate, it indirectly drives the entire fan component to move in the Y direction. Moreover, since the ring rail can rotate around its own axis A, it indirectly drives the entire fan component to rotate around the axis A of the ring rail. Furthermore, since the clamping assembly can rotate around the axis of the rotating shaft, it indirectly drives the fan component to perform pitch motion.

[0023] (2) The present invention can ensure the horizontal and precise centering of the aero-engine fan assembly, realize the horizontal assembly of the aero-engine fan assembly, greatly reduce the assembly space of the whole machine, and improve the assembly efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the device for horizontal assembly of an aircraft engine fan assembly provided by the present invention;

[0026] Figure 2 for Figure 1 Enlarged view at point M;

[0027] Figure 3 for Figure 1 Enlarged view at point N;

[0028] Figure 4 This is a schematic diagram of the pallet, turntable, and stop mechanism in this invention;

[0029] Figure 5 for Figure 4 A cross-sectional view along AA;

[0030] Figure 6 This is a schematic diagram of the drive mechanism between the fixed seat plate and the sliding seat plate, as well as the support seat and the ring rail;

[0031] Figure 7 This is a schematic diagram of the structure in which the drive rod and the sleeve seat cooperate in this invention;

[0032] Figure 8 This is a top view of the mounting structure of the rotating shaft at the end of the ring rail in this invention;

[0033] Figure 9 for Figure 8 A cross-sectional view along BB;

[0034] Figure 10 This is a top view of the clamping assembly in this invention;

[0035] Figure 11 for Figure 10 Enlarged view of point P in the middle;

[0036] Figure 12 This is a schematic diagram of the support column assembly in this invention;

[0037] Figure 13 This is a cross-sectional view of some parts of the support column assembly in this invention;

[0038] Figure 14 This is a schematic diagram of some parts of the disassembled component in this invention;

[0039] Figure 15 This is a schematic diagram of the fan assembly after it has been assembled with the clamping assembly in this invention.

[0040] Reference numerals: 1. Chassis assembly; 1a. Crossbeam; 1b. Column; 1c. Connecting beam; 2. Support plate; 2a. Stepped through hole; 3. Turntable; 4. Fixed base plate; 4a. Guide plate; 4b. Screw seat; 5. Sliding base plate; 5a. Sliding bar; 5b. Sleeve seat; 5c. Limit pin; 5d. Connecting plate; 6. Support base; 6a. Support rod; 6b. Stop pin; 7. Ring rail; 7a. Arc hole; 8. Rotating shaft; 8a. Pin; 9. Clamping assembly; 10. Sliding mechanism; 10a. Guide rail; 10b. Slider; 11. Top seat; 11a. Threaded rod; 11b. Top plate; 11c. Handle rod; 12. Bottom shell; 12a. 12b, Snap ring; 12c, First bevel gear; 12d, Second bevel gear; 12e, Gear rod; 12f, First rod seat; 12g, Second rod seat; 12h, Flat key; 13, External threaded shaft; 13a, Axial limiting boss; 13b, Upper limiting plate; 13c, Lower limiting plate; 13d, Lower end cover; 14, Internal threaded sleeve; 14a, Limiting ring; 14b, Anti-rotation plate; 14c, Anti-rotation rod; 15, Retaining ring; 16, First handwheel; 17, Stopping mechanism; 17a, Mounting block; 17b, V-shaped crank arm; 17c, Stopping rod; 17d, First stop screw; 18, Second stop screw; 19, Drive rod; 19a. Annular groove; 19b. Second handwheel; 19c. Threaded section; 20. Shaft seat; 20a. Slot; 21. Shaft cover; 21a. Tapered hole; 22. Friction block; 23. Brake block; 25. Stop rod; 25a. Stop handle; 25b. Stepped surface; 26. Mounting plate; 27. Support arm; 28. Support claw; 29. ​​Positioning seat; 30. Sleeve nut; 30a. T-shaped handle; 31. Movable sleeve; 31a. Axial limiting groove; 31b. First rotating handle; 32. Hollow outer column; 33. Support plate; 34. Limiting block; 34a. Limiting tooth; 35. Columnar seat; 35a. Strip groove; 36. Adapter seat 37. Annular spline; 38. First handle seat; 38a. Second rotating handle; 39. Movable support plate; 39a. Pin shaft; 40. Sliding body; 41. Inner cylinder; 42. External threaded rod; 43. Connecting rod; 44. Drive nut; 44a. Limiting protrusion ring; 44b. Annular mounting groove; 45. Second handle seat; 45a. Third rotating handle; 46. Limiting shaft; 46a. Stepped ring; 47. Slotted conical end screw; 48. Guide sleeve; 49. Right end cover; 50. Limiting rod; 51. Limiting sleeve; 60. Frame; 61. Movable block; 62. Drive screw; 63. Pull rod; 64. Support rod; 65. Collar; 66. Spring plate. Detailed Implementation

[0041] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0044] Combination Figure 15 As shown, the fan assembly of an aero-engine includes a fan stator and a fan rotor disposed inside the fan stator. A casing is disposed outside the fan stator, and there are mounting edges on the casing. The fan rotor has a hollow inner bore, and a fan nut is disposed in the inner bore of the fan rotor. A stud is disposed on the journal section of the fan stator.

[0045] Combination Figures 1 to 14 The diagram shows a specific embodiment of the device for horizontal assembly of an aircraft engine fan assembly provided by the present invention. The device includes a chassis assembly 1 and a clamping assembly 9 for clamping the fan assembly. A support plate 2 is provided on the top of the chassis assembly 1; the support plate 2 is connected to the chassis assembly 1 via a sliding mechanism 10, allowing the support plate 2 to move along the X direction. A turntable 3 and a lifting mechanism are provided on the support plate 2; the turntable 3 can rotate around its own vertical axis, and the lifting mechanism drives the turntable 3 to move up and down. A fixed seat plate 4 is provided on the turntable 3, and a sliding seat plate 5 is provided on the top of the fixed seat plate 4. A driving mechanism is provided between the fixed seat plate 4 and the sliding seat plate 5 to drive the sliding seat plate 5 to move back and forth along the longitudinal direction of the fixed seat plate 4, in the following direction: Figure 1As shown by arrow B; a semi-annular ring rail 7 is slidably mounted on the sliding base plate 5 via multiple support seats 6, and the ring rail 7 can rotate around its own axis A; the clamping assembly 9 is mounted on the top ends of both sides of the ring rail 7 via a rotating shaft 8, and the clamping assembly 9 can rotate around the axis of the rotating shaft 8, the axis of the rotating shaft 8 being as shown... Figure 1 As shown by the central axis C.

[0046] By adopting the above structure, after the fan assembly is clamped, the fan assembly can indirectly perform six movements by using the various motion mechanisms on the device: first, it moves along the X direction; second, it rotates around the axis of the turntable 3; third, it moves back and forth along the length of the fixed base plate 4, that is, it adjusts the position of the fan assembly in the Y direction; fourth, it rotates around the axis A of the ring rail 7; fifth, it performs lifting and lowering movements; and sixth, it performs pitching movements to adjust the pitch angle.

[0047] Combination Figure 1 As shown, the chassis assembly 1 is a frame structure consisting of two spaced-apart inverted U-shaped support frames; each inverted U-shaped support frame includes a crossbeam 1a and columns 1b at both ends of the crossbeam 1a; the crossbeams 1a of the two inverted U-shaped support frames are connected by two spaced-apart connecting beams 1c; the sliding mechanism 10 includes a guide rail 10a mounted on the top of the connecting beam 1c and a slider 10b mounted on the bottom surface of the support plate 2; the slider 10b slides with the guide rail 10a; a top seat 11 is provided on each column 1b, the top seat 11 including a threaded rod 11a screwed into a threaded hole in the column 1b, a top plate 11b located at the inner end of the threaded rod 11a, and a handle rod 11c located at the outer end of the threaded rod 11a; the threaded rod 11a is arranged parallel to the Y direction.

[0048] By adopting the above structure, the sliding mechanism 10 formed by the guide rail 10a and the slider 10b can realize the movement of the tray 2 in the X direction, thereby indirectly adjusting the position of the fan assembly in the X direction. In addition, since the top seat 11 is provided on the column 1b, the entire device can be initially positioned with the main assembly vehicle. Specifically, by rotating the handle rod 11c to rotate the threaded rod 11a, the threaded rod 11a is adjusted to move along the Y direction, and the position of the top plate 11b is adjusted so that the top plate 11b rests against the main assembly vehicle, thus completing the initial positioning of the entire device with the main assembly vehicle and placing the entire device and the main assembly vehicle on the same axis.

[0049] Combination Figure 4 , Figure 5As shown, the turntable 3 is mounted on the support plate 2 via a base shell 12. The base shell 12 has an open-topped inner cavity. A retaining ring 12a is integrally formed at the outer edge of the opening of the base shell 12. A stepped through hole 2a is provided at the center of the support plate 2. The base shell 12 is inserted into the stepped through hole 2a of the support plate 2, and the lower surface of the retaining ring 12a abuts against the stepped surface of the stepped through hole 2a. The turntable 3 is rotatably mounted in the inner cavity of the base shell 12, and a plurality of universal balls 12b are provided on the outer circumferential surface of the turntable 3, and the universal balls 12b roll in contact with the inner wall of the base shell 12. By providing universal balls 12b, the friction between the outer circumferential surface of the turntable 3 and the interior of the base shell 12 is reduced, making the turntable 3 rotate more smoothly, and the relative rotation of the turntable 3 and the base shell 12 can be easily achieved with the help of external force. In this embodiment, the base shell 12 and the support plate 2 are fastened together by screws and locating pins.

[0050] Combination Figure 1 , Figure 2 and Figure 4 As shown, a stop mechanism 17 is provided on the tray 2 to stop the turntable 3. The stop mechanism 17 includes a mounting block 17a, a V-shaped crank arm 17b, a stop rod 17c, and a first stop screw 17d. The mounting block 17a is fixedly mounted on the tray 2. The middle part of the V-shaped crank arm 17b is rotatably mounted on the tray 2. The first stop screw 17d is horizontally screwed onto the mounting block 17a, and the inner end of the first stop screw 17d is hinged to the first end of the V-shaped crank arm 17b. A rotating handle is provided on the outer end of the first stop screw 17d. The outer end of the stop rod 17c is hinged to the second end of the V-shaped crank arm 17b. The inner end of the stop rod 17c is slidably inserted into the radial through hole of the retaining ring 12a. The end face of the inner end of the stop rod 17c can abut against the outer circumferential surface of the turntable 3. By rotating the rotary handle on the first stop screw 17d, the first stop screw 17d is rotated, and the axial position of the first stop screw 17d is adjusted, which in turn drives the V-shaped crank arm 17b to rotate around the central pivot, thereby driving the stop rod 17c to move along its axial direction, tightening or loosening the turntable 3, and realizing the stop function of the turntable 3.

[0051] Furthermore, combined Figure 2As shown, a second stop screw 18 is vertically screwed onto the mounting block 17a. A rotating handle is provided at the top of the second stop screw 18. When the second stop screw 18 is rotated downwards, its lower end abuts against the sliding mechanism 10 to achieve the stopping function of the pallet 2. Specifically, when the pallet 2 needs to be stopped, the rotating handle on the second stop screw 18 is rotated, causing the second stop screw 18 to move downwards and abut against the guide rail 10a, thus achieving the stopping function of the pallet 2. When the pallet 2 needs to move along the X direction, the rotating handle on the second stop screw 18 is rotated, causing the second stop screw 18 to move upwards and disengage from the guide rail 10a. At this time, the pallet 2 can move on the guide rail 10a.

[0052] Combination Figure 4 , Figure 5 As shown, in this embodiment, the lifting mechanism includes an external threaded shaft 13, an internal threaded sleeve 14, and a first bevel gear 12c and a second bevel gear 12d that mesh with each other in the inner cavity of the bottom shell 12; the internal threaded sleeve 14 is disposed in the inner hole of the turntable 3, and the outer circumferential surface of the internal threaded sleeve 14 forms a rotational fit with the inner hole of the turntable 3; a limiting ring 14a is integrally formed at the lower end of the internal threaded sleeve 14, and a retaining ring 15 is provided at the top end of the internal threaded sleeve 14; the turntable 3 is located between the limiting ring 14a and the retaining ring 15, and through this structure, the axial position of the turntable 3 on the internal threaded sleeve 14 is restricted. The lower end of the external threaded shaft 13 is inserted into the through hole of the first bevel gear 12c and connected by a flat key 12h; the external thread of the upper section of the external threaded shaft 13 is engaged with the threaded hole of the internal threaded sleeve 14; a first rod seat 12f is provided on the bottom surface of the support plate 2, and a second rod seat 12g is provided on the bottom wall of the inner cavity of the bottom shell 12; a gear rod 12e that can rotate around its own axis is inserted between the first rod seat 12f and the second rod seat 12g; the inner end of the gear rod 12e is connected to the second bevel gear 12d, and a first handwheel 16 is provided on the outer end; an anti-rotation plate 14b is fixedly provided at the bottom end of the internal threaded sleeve 14, and a vertical anti-rotation rod 14c is provided on the bottom wall of the bottom shell 12. The upper end of the anti-rotation rod 14c is a smooth rod structure and extends upward into the hole of the anti-rotation plate 14b.

[0053] The lifting and lowering adjustment principle of the turntable 3 is as follows: A rotational fit is formed between the outer circumferential surface of the internal threaded sleeve 14 and the inner hole of the turntable 3, allowing the turntable 3 to rotate relative to the internal threaded sleeve 14. However, the limiting structure formed by the limiting ring 14a and the retaining ring 15 restricts axial movement between the turntable 3 and the internal threaded sleeve 14. Simultaneously, the mutual cooperation between the anti-rotation rod 14c and the anti-rotation plate 14b prevents the internal threaded sleeve 14 from rotating around its own axis. Therefore, when the first handwheel 16 is rotated, the second bevel gear 12d is driven to rotate via the gear rod 12e. The first bevel gear 12c, meshing with it, rotates accordingly, thereby driving the external threaded shaft 13 to rotate. Since the internal threaded sleeve 14 cannot rotate around its own axis, the internal threaded sleeve 14, threadedly engaged with the external threaded shaft 13, can move up and down while the external threaded shaft 13 rotates, thus driving the turntable 3 to move up and down. Furthermore, a bushing is provided between the inner hole of the turntable 3 and the internal threaded sleeve 14 to reduce mutual wear between the turntable 3 and the internal threaded sleeve 14.

[0054] Furthermore, an axial limiting boss 13a is integrally formed on the external threaded shaft 13, and the lower end face of the axial limiting boss 13a abuts against the top surface of the first bevel gear 12c; a through hole is provided at the bottom of the bottom shell 12, and a lower end cover 13d is fixedly installed at the through hole; a stepped through hole is provided at the center of the lower end cover 13d, and the lower end of the external threaded shaft 13 extends into the stepped through hole of the lower end cover 13d, and a lower limiting plate 1 is provided on the lower end face of the external threaded shaft 13. 3c; The upper end face of the lower limiting plate 13c can abut against the stepped surface of the stepped through hole of the lower end cover 13d to restrict the upward movement of the external threaded shaft 13; the outer circumferential surface of the lower end of the external threaded shaft 13 forms a clearance fit with the stepped through hole of the lower end cover 13d; an upper limiting plate 13b is provided at the top end of the external threaded shaft 13, the diameter of which is larger than the inner diameter of the retaining ring 15. The maximum rising height of the turntable 3 can be limited by using the upper limiting plate 13b. The axial position of the external threaded shaft 13 is limited by the limiting structure formed by the axial limiting boss 13a and the lower limiting plate 13c.

[0055] Combination Figure 1 , Figure 6 ,as well as Figure 7As shown, a guide plate 4a is provided on the top surface of the fixed seat plate 4, and a slide bar 5a is fixedly connected to the bottom surface of the sliding seat plate 5; the slide bar 5a is slidably installed in a groove formed between the guide plate 4a and the fixed seat plate 4; the driving mechanism between the fixed seat plate 4 and the sliding seat plate 5 includes a driving rod 19, a screw seat 4b, and a sleeve seat 5b; a second handwheel 19b is provided at both ends of the driving rod 19; the sleeve seat 5b is sleeved on the driving rod 19 near both ends, and the outer cylindrical surface of the driving rod 19... The drive rod 19 is rotated into the inner hole of the sleeve seat 5b; an annular groove 19a is provided on the drive rod 19, and a limiting pin 5c is provided on the sleeve seat 5b, with the inner end of the limiting pin 5c extending into the annular groove 19a; a connecting plate 5d is fixedly connected to the sleeve seat 5b, and the connecting plate 5d is fixedly installed on the sliding seat plate 5; the screw seat 4b is fixedly installed on the fixed seat plate 4; a threaded section 19c is provided in the middle of the drive rod 19, and the threaded section 19c is screwed into the threaded hole of the screw seat 4b.

[0056] Combination Figure 6 As shown, the driving principle for the sliding seat plate 5 to move back and forth along the length of the fixed seat plate 4 is as follows: by rotating the second handwheel 19b, the drive rod 19 rotates around its own axis. Since the screw seat 4b is fixed on the fixed seat plate 4, under the action of the threaded section 19c and the screw seat 4b, the entire drive rod 19 moves along its axial direction. Under the action of the limiting pin 5c, the sleeve seat 5b also moves along the axial direction of the drive rod 19, thereby driving the sliding seat plate 5 to move.

[0057] Combination Figure 3 and Figure 6 As shown, each support base 6 includes two support plates fixedly mounted on the sliding base plate 5, with a support rod 6a positioned between the two support plates. An arc-shaped hole 7a is provided on the ring rail 7 at the position corresponding to each support base 6. The support rod 6a is inserted into the arc-shaped hole 7a, and the outer cylindrical surface of the support rod 6a slides in contact with the upper and lower arc-shaped surfaces of the arc-shaped hole 7a. A stop pin 6b is screwed onto the support plate of the support base 6 to tighten the ring rail 7, thus achieving the stop function of the ring rail 7. During the fan assembly process, only a small rotation around the axis A of the ring rail 7 is required. Therefore, by utilizing the sliding contact between the arc-shaped hole 7a and the support rod 6a, a small rotation of the ring rail 7 around its axis A can be achieved. The stop pin 6b is mainly used to prevent the ring rail 7 from rotating freely and affecting the assembly during fan assembly installation.

[0058] Combination Figure 6 , Figure 8 and Figure 9As shown, the rotating shaft 8 is mounted at the top of the ring rail 7 via a rotating shaft seat 20 and a rotating shaft cover 21; a slot 20a is provided on the rotating shaft seat 20; the top of the ring rail 7 is inserted into the slot 20a and fixed with bolts; the rotating shaft cover 21 is fixedly mounted on the top of the rotating shaft seat 20 with screws; the rotating shaft 8 is rotatably mounted in the rotating shaft mounting hole formed by the rotating shaft cover 21 and the rotating shaft seat 20; a friction block 22 is provided on the top of the rotating shaft cover 21; a brake block 23 is provided in the inner hole of the rotating shaft 8; The shaft cover 21 is provided with an inverted conical hole 21a; a stop rod 25 is provided on the friction block 22, and the lower end of the stop rod 25 extends downward and passes through the conical hole 21a and the tube wall of the rotating shaft 8 in sequence before being threadedly connected to the brake block 23; a stop handle 25a is inserted laterally at the top of the stop rod 25 for rotating the stop rod 25; a stepped surface 25b is provided on the stop rod 25 for abutting against the top surface of the friction block 22; the diameter of the lowest end of the conical hole 21a is larger than the outer diameter of the stop rod 25 to form a swing space for the stop rod 25.

[0059] The rotating shaft 8 is rotatably mounted within the rotating shaft mounting hole formed by the rotating shaft cover 21 and the rotating shaft seat 20, enabling the pitch swing of the clamping assembly 9, and thus the pitch movement of the fan assembly. During the fan assembly assembly process, only a small pitch movement is required. Therefore, the swing space formed by the tapered hole 21a can limit the swing amplitude of the stop rod 25, thereby limiting the rotation amplitude of the rotating shaft 8 around its own axis. When the required pitch angle is reached, rotating the stop rod 25 presses against the friction block 22, locking the shaft 8 and preventing it from rotating.

[0060] Combination Figures 10 to 13 ,as well as Figure 15 As shown, the clamping assembly 9 includes a mounting plate 26 and support arms 27 fixedly disposed at both ends of the mounting plate 26; the mounting plate 26 and the two support arms 27 together form a U-shaped support structure; the inner end of the rotating shaft 8 is inserted into the support arm 27 and fixed by a pin 8a; a support claw 28 is provided on the end of the support arm 27 away from the mounting plate 26 for connecting with the mounting edge of the fan stator casing; a positioning seat 29 is fixedly installed on the right end face of the mounting plate 26, and a stepped limiting boss is provided on the right end face of the positioning seat 29, which is used to be inserted into the inner hole of the journal of the fan stator, and the stepped surface of the limiting boss is used to abut against the end face of the journal of the fan stator; a plurality of stepped through holes are evenly distributed in a ring on the positioning seat 29, and a sleeve nut 30 is provided in the stepped through holes for connecting with the stud on the fan stator; a T-shaped handle 30a is connected to the sleeve nut 30.

[0061] Furthermore, the clamping assembly 9 also includes a support column assembly for supporting the fan rotor. This support column assembly includes a movable sleeve 31 and a hollow outer column 32 slidably inserted into the inner hole of the movable sleeve 31. The movable sleeve 31 is mounted on the center holes of both the mounting plate 26 and the positioning seat 29, and the outer cylindrical surface of the movable sleeve 31 slides in conjunction with the center holes of both. An axial limiting structure is provided between the movable sleeve 31 and the mounting plate 26 to limit the axial position of the movable sleeve 31. This axial limiting structure includes an axial limiting groove 31a on the outer cylindrical surface of the movable sleeve 31 and multiple limiting blocks 34 on the left end face of the mounting plate 26. Each limiting block 34 has a limiting tooth 34a, which extends into the axial limiting groove 31a, and the width of the limiting tooth 34a is less than the width of the axial limiting groove 31a. The right end of the movable sleeve 31 is provided with an external thread section for connecting with the internal thread of the fan rotor's journal. Multiple first rotating handles 31b are evenly distributed around the outer circumference of the left end of the movable sleeve 31. Rotating the first rotating handles 31b drives the movable sleeve 31 to rotate, so that the external thread section of the right end of the movable sleeve 31 is connected to the internal thread of the journal of the fan rotor. A columnar seat 35 is welded to the right end of the hollow outer column 32, and an adapter seat 36 is welded to the left end. An annular spline 37 is installed on the right end of the columnar seat 35 for cooperating with the fan nut in the inner hole of the fan rotor. The columnar seat 35 is... The fan rotor has a hollow tubular structure with multiple strip grooves 35a evenly distributed on its wall. A movable support plate 39 is installed within each strip groove 35a, and the right end of the movable support plate 39 is hinged to the columnar base 35 via a pin 39a. A support plate drive structure is installed in the central through hole formed by the hollow outer column 32, the columnar base 35, and the adapter 36. This structure drives the movable support plate 39 to rotate around the pin 39a, so that the left end of the movable support plate 39 is supported in the inner hole of the fan rotor. A first handle seat 38 is fixed to the left end of the adapter 36, and multiple second rotating handles 38a are provided on the first handle seat 38. Rotating the second rotating handles 38a drives the hollow outer column 32 to rotate around its own axis, which in turn drives the annular spline 37 to rotate, thus pre-tightening the fan nut.

[0062] The support plate driving structure includes a sliding body 40, an inner column 41, an external threaded rod 42, and multiple connecting rods 43. Each slot 35a contains a corresponding connecting rod 43. The sliding body 40 is slidably installed in the inner hole of the columnar seat 35. The external threaded rod 42 is located in the inner hole of the adapter seat 36. The inner column 41 is located in the inner hole of the hollow outer column 32, with its left end fixedly connected to the external threaded rod 42 and its right end fixedly connected to the sliding body 40. The left end of the connecting rod 43 is hinged to the sliding body 40, and its right end is hinged to the left end of the movable support plate 39. A spring plate 66 is provided on the sliding body 40 to generate a radial force on the connecting rod 43, pushing it out of the slot 35a. This prevents the connecting rod 43 from failing to extend when retracted to its limit position.

[0063] The left end of the external threaded rod 42 extends from the inside of the adapter 36 and is screwed with a drive nut 44; the first handle seat 38 is sleeved on the outside of the drive nut 44, and a limiting protrusion ring 44a is integrally formed on the outer circumference of the right end of the drive nut 44. The first handle seat 38 and the left end face of the adapter 36 together form an annular mounting groove 44b; the limiting protrusion ring 44a at the right end of the drive nut 44 is rotatably mounted in the annular mounting groove 44b; a second handle seat 45 is fixedly connected to the drive nut 44, and multiple third rotating handles 45b are provided on the second handle seat 45.

[0064] A limiting shaft 46 is inserted into the inner hole at the right end of the columnar base 35, and a stepped ring 46a is integrally formed on the outer circumferential surface of the limiting shaft 46. The annular spline 37 is sleeved on the limiting shaft 46 and is pressed against the left end face of the columnar base 35 by the stepped ring 46a. The limiting shaft 46 and the columnar base 35 are fastened together by a plurality of slotted conical screws 47. A guide sleeve 48 is sleeved on the outer cylindrical surface of the right section of the limiting shaft 46, and a right end cap 49 is provided on the right end face of the limiting shaft 46 and locked by screws. The right end cap 49 pushes the guide sleeve 48 to press against the stepped ring 46a.

[0065] Combination Figure 1 As shown, the device for horizontal assembly of an aircraft engine fan assembly provided in this embodiment also includes a disassembly assembly for disassembling the fan assembly from the main unit; the disassembly assembly includes a frame 60 and a movable block 61 slidably mounted inside the frame 60; a drive screw 62 is provided on the frame 60, and the drive screw 62 is threadedly engaged with the movable block 61 for driving the movable block 61 to move in the X direction within the frame 60; a rotating handle is provided on the drive screw 62; two pull rods 63 are provided on the movable block 61, and the end of the pull rod 63 away from the movable block 61 is connected to the mounting plate 26; support rods 64 are respectively provided at both ends of the frame 60; and the support rods 64 are located on the outer side of the support arm 27, and a clamp 65 is provided at the end of the support rod 64 for connecting to the main unit frame.

[0066] Combination Figure 10 , Figure 12 and Figure 13 As shown, a plurality of limiting rods 50 are provided on the first handle seat 38, and a limiting sleeve 51 is movably sleeved on each limiting rod 50; a spring is sleeved on the limiting rod 50, and one end of the spring is connected to the bottom wall of the inner cavity of the limiting sleeve 51, and the other end is connected to the limiting head at the right end of the limiting rod 50; the spring is in a stretched and energy-storing state, forming a force in the positive X direction to push the limiting sleeve 51 against the left end face of the movable sleeve 31. By setting the limiting sleeve 51, during the disassembly of the fan assembly, the limiting sleeve 51 moves in the negative X direction, simultaneously pushing the first handle seat 38 and the various components connected thereto to move synchronously.

[0067] The working principle of the device provided by this invention includes the following process:

[0068] (1) Initial positioning: First, the entire device is initially positioned with the main assembly vehicle. By adjusting the top seat 11 on the chassis component 1, the entire device can be initially positioned with the main assembly vehicle, so that the entire device and the main assembly vehicle are on the same axis.

[0069] (2) Pre-adjustment: Manually push the disassembly assembly to move the pallet 2 and all the components above it along the positive X direction, and determine whether the support column assembly can be aligned with the spline bushing on the main unit. If there is a deviation, the height can be adjusted by using the lifting mechanism consisting of the external threaded shaft 13, the internal threaded sleeve 14, and the first bevel gear 12c and the second bevel gear 12d meshing with each other in the inner cavity of the bottom shell 12, and the rotation adjustment can be achieved by using the rotation of the turntable 3. The position adjustment in the Y direction can be achieved by using the drive mechanism between the fixed seat plate 4 and the sliding seat plate 5, and the pitch angle adjustment can be achieved by using the rotating shaft 8 until the guide sleeve 48 at the front end of the support column assembly can be inserted into the spline bushing on the main unit. The support column assembly and the clamping assembly 9 can be kept horizontal by manually applying force. The rotating stop rod 25 is rotated to press the friction block 22 and lock the rotating shaft 8.

[0070] (3) Install parts: The assembled fan assembly is horizontally hoisted to the position of the clamping assembly 9 for installation. Specifically, the front end face of the fan stator is engaged with the positioning seat 29 on the clamping assembly 9, the support claw 28 on the support arm 27 is connected to the mounting edge of the fan stator casing, the inner journal thread of the fan rotor is engaged with the outer thread section of the right end of the movable sleeve 31, and the external thread rod 42 is moved in the positive direction of the X direction by rotating the drive nut 44, so that the sliding body 40 moves while the connecting rod 43 drives the movable support plate 39 to extend and be supported in the inner hole of the fan rotor. The sleeve nut 30 is rotated and connected to the stud on the fan stator to complete the installation of the fan assembly on the clamping assembly 9.

[0071] (4) Assembly of the fan assembly and the host: Manually push the disassembled assembly to indirectly drive the fan assembly. If there is a positional difference between the fan assembly and the host, fine adjustments can be made according to the operation steps in the pre-adjustment process. In addition, if the mounting holes of the fan assembly and the mounting holes on the host are not aligned, the fan assembly can be rotated slightly around its own axis by rotating the fine-tuning ring rail 7 around its axis A, so that the mounting holes of the fan assembly and the mounting holes on the host are aligned, and the final assembly is completed.

[0072] (5) Disassembly: The disassembly component is mainly to disassemble the fan assembly from the host. During disassembly, the support rod 64 is connected to the host frame through the clamp 65. The rotating drive screw 62 drives the movable block 61 to move along the negative X direction, thereby driving the clamping component 9 to move along the negative X direction, so that the fan assembly gradually detaches from the host, and finally the fan assembly is horizontally disassembled on the host.

[0073] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An apparatus for horizontally assembling an aircraft engine fan assembly, comprising a chassis assembly (1) and a clamping assembly (9) for clamping the fan assembly, characterized in that, A tray (2) is provided on the top of the chassis assembly (1); and the tray (2) is connected to the chassis assembly (1) by a sliding mechanism (10) so that the tray (2) can move along the X direction; A turntable (3) and a lifting mechanism are provided on the tray (2); the turntable (3) can rotate around its own vertical axis, and the lifting mechanism is used to drive the turntable (3) to perform lifting and lowering movements; A fixed seat plate (4) is provided on the turntable (3), and a sliding seat plate (5) is provided on the top of the fixed seat plate (4); and a driving mechanism is provided between the fixed seat plate (4) and the sliding seat plate (5) for driving the sliding seat plate (5) to move back and forth along the long direction of the fixed seat plate (4); A semi-circular ring rail (7) is slidably installed on the sliding seat plate (5) via multiple support seats (6), and the ring rail (7) can rotate around its own axis A; The clamping assembly (9) is mounted on the top of both sides of the ring rail (7) via a rotating shaft (8), and the clamping assembly (9) can rotate around the axis of the rotating shaft (8); The turntable (3) is mounted on the tray (2) via the bottom shell (12); The bottom shell (12) has an open inner cavity at the top; a retaining ring (12a) is integrally formed at the outer edge of the opening of the bottom shell (12); a stepped through hole (2a) is provided in the center of the tray (2); the bottom shell (12) is inserted into the stepped through hole (2a) of the tray (2), and the lower surface of the retaining ring (12a) abuts against the stepped surface of the stepped through hole (2a); The turntable (3) is rotatably installed in the inner cavity of the bottom shell (12), and the outer peripheral surface of the turntable (3) is provided with a plurality of universal balls (12b), and the universal balls (12b) are in rolling contact with the inner wall of the bottom shell (12); A stop mechanism (17) is provided on the tray (2) to realize the stop function of the turntable (3); the stop mechanism (17) includes a mounting block (17a), a V-shaped crank arm (17b), a stop rod (17c), and a first stop screw (17d). The mounting block (17a) is fixedly mounted on the tray (2); the middle part of the V-shaped crank arm (17b) is rotatably mounted on the tray (2); The first stop screw (17d) is horizontally screwed onto the mounting block (17a), and the inner end of the first stop screw (17d) is hinged to the first end of the V-shaped crank arm (17b). A rotating handle is provided on the outer end of the first stop screw (17d). The outer end of the stop rod (17c) is hinged to the second end of the V-shaped crank arm (17b), and the inner end of the stop rod (17c) is slidably inserted into the radial through hole of the retaining ring (12a); the end face of the inner end of the stop rod (17c) can abut against the outer circumferential surface of the turntable (3). A second stop screw (18) is vertically screwed onto the mounting block (17a). A rotating handle is provided at the top of the second stop screw (18). When the second stop screw (18) is rotated to move downward, the lower end of the second stop screw (18) can abut against the sliding mechanism (10) to realize the stopping function of the tray (2).

2. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, The chassis component (1) is a frame structure consisting of two spaced-apart inverted U-shaped support frames; Each inverted U-shaped support frame includes a crossbeam (1a) and columns (1b) set at both ends of the crossbeam (1a); The crossbeams (1a) of the two inverted U-shaped support frames are connected by two spaced connecting beams (1c); The sliding mechanism (10) includes a guide rail (10a) mounted on the top of the connecting beam (1c) and a slider (10b) mounted on the bottom surface of the tray (2); the slider (10b) is in sliding engagement with the guide rail (10a); Each column (1b) is provided with a top seat (11), which includes a threaded rod (11a) screwed into a threaded hole of the column (1b), a top plate (11b) provided on the inner end of the threaded rod (11a), and a handle rod (11c) provided on the outer end of the threaded rod (11a); the threaded rod (11a) is arranged parallel to the Y direction.

3. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, The lifting mechanism includes an external threaded shaft (13), an internal threaded sleeve (14), and a first bevel gear (12c) and a second bevel gear (12d) that mesh with each other in the inner cavity of the bottom shell (12). An internal threaded sleeve (14) is disposed in the inner hole of the turntable (3), and the outer circumferential surface of the internal threaded sleeve (14) forms a rotational fit with the inner hole of the turntable (3); a limiting ring (14a) is integrally formed at the lower end of the internal threaded sleeve (14), and a retaining ring (15) is provided at the top end of the internal threaded sleeve (14); the turntable (3) is located between the limiting ring (14a) and the retaining ring (15); The lower end of the external threaded shaft (13) is inserted into the through hole of the first bevel gear (12c) and connected by a flat key (12h); the external thread of the upper section of the external threaded shaft (13) is engaged with the threaded hole of the internal threaded sleeve (14); A first rod seat (12f) is provided on the bottom surface of the tray (2), and a second rod seat (12g) is provided on the inner wall of the bottom cavity of the bottom shell (12); a gear rod (12e) that can rotate around its own axis is inserted between the first rod seat (12f) and the second rod seat (12g); the inner end of the gear rod (12e) is connected to the second bevel gear (12d), and the outer end is provided with a first handwheel (16). An anti-rotation plate (14b) is fixedly installed at the bottom end of the internal threaded sleeve (14), and a vertical anti-rotation rod (14c) is installed on the bottom wall of the bottom shell (12). The upper end of the anti-rotation rod (14c) is a smooth rod structure and extends upward to be inserted into the hole of the anti-rotation plate (14b).

4. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, A guide plate (4a) is provided on the top surface of the fixed seat plate (4), and a slide bar (5a) is fixedly connected to the bottom surface of the sliding seat plate (5); the slide bar (5a) is slidably installed in a groove formed between the guide plate (4a) and the fixed seat plate (4); The driving mechanism between the fixed seat plate (4) and the sliding seat plate (5) includes a driving rod (19), a screw seat (4b) and a sleeve seat (5b); a second handwheel (19b) is provided at both ends of the driving rod (19). The sleeve seat (5b) is sleeved on the drive rod (19) near both ends. The outer cylindrical surface of the drive rod (19) and the inner hole of the sleeve seat (5b) form a rotational fit. An annular groove (19a) is provided on the drive rod (19). A limit pin (5c) is provided on the sleeve seat (5b), and the inner end of the limit pin (5c) extends into the annular groove (19a). A connecting plate (5d) is fixedly connected to the sleeve seat (5b), and the connecting plate (5d) is fixedly installed on the sliding seat plate (5). The screw seat (4b) is fixedly mounted on the fixed seat plate (4); a threaded section (19c) is provided in the middle of the drive rod (19); and the threaded section (19c) is screwed into the threaded hole of the screw seat (4b).

5. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, Each support base (6) includes two support plates fixedly installed on the sliding base plate (5), and a support rod (6a) is provided between the two support plates. An arc-shaped hole (7a) is provided on the ring rail (7) at the position corresponding to each support seat (6). The support rod (6a) is inserted into the arc-shaped hole (7a), and the outer cylindrical surface of the support rod (6a) slides in cooperation with the upper and lower arc surfaces of the arc-shaped hole (7a). A stop pin (6b) is screwed onto the support plate of the support base (6) to tighten the ring rail (7) so as to realize the stop function of the ring rail (7).

6. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, The rotating shaft (8) is installed at the top of the ring rail (7) via a rotating shaft seat (20) and a rotating shaft cover (21); a slot (20a) is provided on the rotating shaft seat (20); the top of the ring rail (7) is inserted into the slot (20a) and fixed with bolts; The shaft cover (21) is fixedly installed on the top of the shaft seat (20) by screws; the shaft (8) is rotatably installed in the shaft mounting hole formed by the shaft cover (21) and the shaft seat (20); A friction block (22) is provided on the top of the shaft cover (21); a brake block (23) is provided in the inner hole of the shaft (8); an inverted conical hole (21a) is provided on the shaft cover (21); a stop rod (25) is provided on the friction block (22), the lower end of the stop rod (25) extends downward and passes through the conical hole (21a) and the tube wall of the shaft (8) in sequence, and is threadedly connected to the brake block (23); a stop handle (25a) is inserted horizontally at the top of the stop rod (25) for rotating the stop rod (25); a stepped surface (25b) is provided on the stop rod (25) for abutting against the top surface of the friction block (22); the diameter of the lowest end of the conical hole (21a) is larger than the outer diameter of the stop rod (25) to form a swing space for the stop rod (25).

7. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 1, characterized in that, The clamping assembly (9) includes a mounting plate (26) and support arms (27) fixedly disposed at both ends of the mounting plate (26); the mounting plate (26) and the two support arms (27) together form a U-shaped support structure; the inner end of the rotating shaft (8) is inserted into the support arm (27) and fixed by a pin (8a); A support claw (28) is provided at one end of the support arm (27) away from the mounting plate (26) for connecting with the mounting edge of the fan stator casing; A positioning seat (29) is fixedly installed on the right end face of the mounting plate (26). A stepped limiting boss is provided on the right end face of the positioning seat (29). The limiting boss is used to be inserted into the inner hole of the journal of the fan stator, and the stepped surface of the limiting boss is used to abut against the end face of the journal of the fan stator. Multiple stepped through holes are evenly distributed in a ring on the positioning seat (29), and a sleeve nut (30) is provided in the stepped through hole for connection with the stud on the fan stator; a T-shaped handle (30a) is connected to the sleeve nut (30).

8. The apparatus for horizontal assembly of an aircraft engine fan assembly as described in claim 7, characterized in that, The clamping assembly (9) further includes a support column assembly for supporting the fan rotor. The support column assembly includes a movable sleeve (31) and a hollow outer column (32) slidably inserted into the inner hole of the movable sleeve (31). The movable sleeve (31) is installed on the center holes of the mounting plate (26) and the positioning seat (29), and the outer cylindrical surface of the movable sleeve (31) slides in cooperation with the center holes of both. An axial limiting structure is provided between the movable sleeve (31) and the mounting plate (26) to limit the axial position of the movable sleeve (31). The right end of the movable sleeve (31) is provided with an external thread section for engaging with the inner journal of the fan rotor. Threaded connection; multiple first rotating handles (31b) are evenly distributed around the left end of the movable sleeve (31); a columnar seat (35) is welded to the right end of the hollow outer column (32), and an adapter seat (36) is welded to the left end; an annular spline (37) is installed on the right end of the columnar seat (35) for cooperating with the fan nut in the inner hole of the fan rotor; the columnar seat (35) is a hollow tubular structure, and multiple strip grooves (35a) are evenly distributed on its tube wall; a movable support plate (39) is provided in each strip groove (35a), and the right end of the movable support plate (39) is hinged to the columnar seat (35) by a pin (39a); A support plate drive structure is provided in the central through hole formed by the hollow outer column (32), the columnar seat (35) and the adapter seat (36) to drive the movable support plate (39) to rotate around the pin shaft (39a), so that the left end of the movable support plate (39) is supported in the inner hole of the fan rotor.

Images