A pressure plate assembly and assembly tool for high-pressure rotor end gear lock ring blind cavity assembly

Abstract

The present invention discloses a pressure plate assembly and assembly tooling for assembling a high-pressure rotor end tooth locking ring blind cavity. The pressure plate comprises a pressure plate for pressing the end tooth locking ring to be assembled; a base provided on the pressure plate, a synchronous belt provided on the base, one side of the base rotatably connected to a synchronous wheel assembly, and the synchronous wheel assembly capable of rotating circumferentially along the synchronous belt; and an image acquisition unit provided on the synchronous wheel assembly. The rotation of the image acquisition unit allows for real-time observation of the installation and alignment conditions within the blind cavity, visualizing the internal installation conditions. The installation position of the parts can then be adjusted based on the internal conditions. This accurately reflects the assembly position status in real time, precisely guiding the assembler's judgment of the assembly position and enabling timely and correct position adjustments. This improves the end tooth locking ring assembly qualification rate, enhances the assembly quality of the end tooth locking ring blind cavity, and reduces the need for repeated manual disassembly and installation.

Description

Technical Field

[0001] The invention belongs to the technical field of engine rotor support and fixation, and relates to a pressure plate assembly and an assembly tool for assembling a blind cavity of a high-pressure rotor end gear lock ring. Background Art

[0002] The aircraft engine is the heart of an aircraft and a key determinant of its performance. Due to its harsh operating environment, aircraft engines face repeated, long-term operation under high temperatures, high pressures, high speeds, and high loads. They are also required to deliver high thrust, high reliability, and a long service life. This places even higher demands on the reliable and effective operation of the engine's support components. These components must be securely connected to provide a robust support system, ensuring stable operation of the rotor components at high speeds and providing a tight connection between the rotor and stator.

[0003] At present, the engine support assembly is mostly fixed by nut tightening, clamps and locking rings. However, due to its structural characteristics and size limitations, the aircraft engine involved in this patent adopts the end tooth lock ring bite method to replace the commonly used nut + clamp fixation method when fixing its high-pressure rotor support assembly. However, since the teeth used in the bite are very small, the height × height of the teeth are only 1 mm × 1 mm. For engines with large structural dimensions, it is difficult to align the small teeth. In addition, when the end tooth lock ring is assembled in the blind cavity of the engine, the assembly position cannot be visually determined, resulting in repeated disassembly and assembly during the assembly process, low assembly efficiency, or, in order to avoid repeated disassembly and assembly during the bite, the end tooth lock ring teeth are engaged under a stress state to complete the assembly, affecting the assembly quality of the engine high-pressure rotor support assembly. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and provide a pressure plate assembly and an assembly tool for assembling a blind cavity of a high-pressure rotor end gear lock ring.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pressure plate assembly for blind cavity assembly of a high-pressure rotor end tooth locking ring comprises a pressure plate for pressing the end tooth locking ring to be assembled;

[0007] The pressure plate is provided with a base, and a synchronous belt is provided on the base. One side of the base is rotatably connected to a synchronous wheel assembly, and the synchronous wheel assembly can rotate along the circumference of the synchronous belt;

[0008] An image acquisition unit is provided on the synchronous wheel assembly.

[0009] A further improvement of the present invention is:

[0010] The synchronous wheel assembly includes a mounting block, and the mounting block is rotatably connected to the base;

[0011] The mounting block is located on one side of the synchronous belt, and a synchronous wheel is provided on the mounting block. The synchronous wheel is connected to the driving unit and meshes with the synchronous belt;

[0012] The image acquisition unit is installed on the installation block.

[0013] An annular groove is circumferentially formed on the side wall of the base, and a guide wheel is arranged in the annular groove. One end of the guide wheel is slidably connected to the annular groove, and the other end is connected to the mounting block.

[0014] The driving unit is a motor, the motor is connected to a turbine reducer, and the turbine reducer is arranged on a mounting block;

[0015] The lower end of the turbine reducer is connected to the synchronous wheel shaft, the lower end of the synchronous wheel shaft is connected to the bearing, and the synchronous wheel is installed on the synchronous wheel shaft.

[0016] The image acquisition unit is a camera.

[0017] A blind cavity assembly tool for a high-pressure rotor end gear locking ring, comprising the pressure plate assembly of the present invention, wherein the end gear ring is provided on one side of the pressure plate assembly and the end gear locking ring is provided on the other side;

[0018] The side of the end gear ring away from the pressure plate assembly is connected to the torque transmission assembly;

[0019] The end tooth ring is provided with a first end tooth in a circumferential direction, and the end surface of the end tooth locking ring is provided with a partial second end tooth, and the first end tooth and the second end tooth are capable of meshing.

[0020] The further improvement of this assembly tool is:

[0021] The end tooth locking ring is installed on the end of the rotor to be fixed, the outer side of the rotor is provided with a locking sleeve, and the pressure plate assembly and the end tooth ring are both arranged in the locking sleeve;

[0022] The torque transmission component is connected to the locking sleeve.

[0023] The end gear ring is welded to the locking sleeve.

[0024] It also includes a torque limiting shaft, which sequentially passes through the rotor, the end gear locking ring, the pressure plate assembly, the end gear ring and the torque transmission assembly;

[0025] The end of the torque-limiting shaft is connected to the anti-torsion bracket.

[0026] The torque transmission assembly includes a wrench, and the wrench is arranged on the outside of the locking sleeve;

[0027] The wrench is connected to the torque transmission ring.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention discloses a pressure plate assembly for assembling a blind cavity of an end tooth locking ring of a high-pressure rotor, comprising a pressure plate for fixing the end tooth locking ring, the pressure plate being connected to a fixing seat, a synchronous belt being provided on the fixing seat, and the synchronous belt helping the synchronous wheel assembly to rotate along its circumference and thereby driving an image acquisition unit to rotate circumferentially. According to the rotation of the image acquisition unit, the installation alignment condition inside the blind cavity can be observed in real time, the internal installation condition can be visualized, and then the installation position of the parts can be adjusted according to the internal condition. The assembly position status can be accurately reflected in real time, the assembler can be accurately guided to judge the assembly position, and the correct position adjustment can be made in time, thereby improving the assembly qualification rate of the end tooth locking ring, improving the assembly quality of the blind cavity of the end tooth locking ring, and reducing the process of repeated manual disassembly and installation.

[0030] The present invention also discloses a blind cavity assembly tool for the end tooth locking ring of a high-pressure rotor, wherein force is applied to the end tooth locking ring through a pressure plate assembly, and torque is transmitted to the end tooth ring through a torque transmission assembly. During the fixing process, the relative installation positions of the end tooth ring and the end tooth locking ring can be observed in real time through an image acquisition unit in the pressure plate assembly, and correct position adjustments can be made in time to improve the assembly qualification rate; damage to the part surface caused by artificially applying external force to adjust the position of the end tooth locking ring when the rear end teeth are in poor engagement due to disassembly or assembly or blind cavity assembly of the end tooth locking ring are reduced without disassembling the parts, thereby improving the assembly quality of the blind cavity of the end tooth locking ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is an assembly diagram of the present invention;

[0033] Figure 2 is a front view of the pressure plate assembly of the present invention;

[0034] Figure 3 For the present invention Figure 2 AA section view;

[0035] Figure 4 is a top view of the pressure plate assembly of the present invention;

[0036] Figure 5 For the present invention Figure 3 AA section view;

[0037] Figure 6 This is a schematic diagram of the meshing assembly of the end tooth locking ring and the end tooth ring of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the end tooth locking ring and the end tooth ring during assembly of the present invention.

[0039] Wherein: 1-torque limiting plate; 2-wrench; 3-nut; 4-pressure plate; 5-torque limiting shaft; 6-lifting rope; 7-fixing pressure plate; 8-hexagonal nut; 9-anti-torque bracket; 10-torque transmission ring; 11-synchronous belt; 12-synchronous pulley; 13-turbine reducer; 14-motor; 15-mounting block; 16-camera; 17-synchronous pulley shaft; 18-bearing; 19-guide wheel; 20-end gear locking ring; 21-end gear ring; DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] The present invention is described in further detail below with reference to the accompanying drawings:

[0047] See also Figure 1 The embodiment of the present invention discloses a pressure plate assembly for the blind cavity assembly of the end tooth locking ring of the high-pressure rotor. The embodiment of the present invention can be applied to the blind cavity assembly field of the end tooth locking ring of the high-pressure rotor support assembly of the aircraft engine, so as to realize the assembly of the end tooth locking ring in the blind cavity, avoid the poor engagement position of the end tooth locking ring teeth and uneven engagement force, ensure the assembly quality of the engine high-pressure rotor support assembly, reduce the number of repeated disassembly and assembly, and improve the assembly efficiency of the end tooth locking ring.

[0048] In specific assembly applications, the locking fixture is installed into the engine rotor and secured to the aircraft engine intermediate casing via the torque limiting plate 1 and anti-torque bracket 9 for initial positioning. The torque limiting shaft at the other end of the fixture secures the fixture to the engine rotor shaft for secondary positioning. The torque limiting plate is then compressed with a hexagonal nut to secure the fixture to the engine.

[0049] Install the end gear lock ring onto the rotor end face and install it into the rotor mounting groove through the claws of the end gear lock ring. Press the end gear ring with both ends of the end gear ring pressure plate, making sure to avoid the end gear position.

[0050] The locking sleeve of the aircraft engine with a locking ring is installed on the tooling torque wrench 2, connected to the torque booster through the torque transmission ring 10, and the locking sleeve is tightened through the external thread on the engine rotor using the torque wrench 2 to ensure the design torque requirements.

[0051] Specifically:

[0052] See also Figures 2 to 5A pressure plate assembly for assembling a blind cavity of a high-pressure rotor end tooth locking ring includes a pressure plate 4, which is used to press the end tooth locking ring 20 to be assembled; a base is provided on the pressure plate 4, and a synchronous belt 11 is provided on the base. One side of the base is rotatably connected to a synchronous wheel assembly, and the synchronous wheel assembly can rotate circumferentially along the synchronous belt 11; an image acquisition unit is provided on the synchronous wheel assembly.

[0053] Furthermore, in an embodiment of the present invention, the synchronous wheel assembly includes a mounting block 15 and a base, a synchronous belt 11 is fixed on the base, a circumferential annular groove is opened on the side wall of the base, a guide wheel 19 is slidably connected in the annular groove, one end of the guide wheel 19 is slidably connected to the annular groove, and the other end is connected to the mounting block 15, a turbine reducer 13 is provided at the upper end of the mounting block 15, the upper end of the turbine reducer 13 is connected to the motor 14, the lower end of the turbine reducer 13 is connected to the synchronous wheel shaft 17, a synchronous wheel 12 is installed on the synchronous wheel shaft 17, the synchronous wheel shaft 17 is connected to the mounting block 15 through a bearing 18, and the synchronous wheel 12 is engaged with the synchronous belt 11.

[0054] Based on the pressure plate assembly disclosed in the embodiment of the present invention, see Figure 1 , the embodiment of the present invention also discloses a blind cavity assembly tool for a high-pressure rotor end tooth lock ring:

[0055] It includes the pressure plate assembly described in an embodiment of the present invention, wherein an end tooth ring 21 is provided on one side of the pressure plate assembly, and an end tooth locking ring 20 is provided on the other side; the end tooth ring 21 is connected to the torque transmission assembly on the side away from the pressure plate assembly; a first end tooth is provided on the circumferential direction of the end tooth ring 21, and a local second end tooth is provided on the end face of the end tooth locking ring 20, and the first end tooth and the second end tooth can engage with each other.

[0056] Specifically, during installation, the aircraft engine is placed in a vertical position, and the crane lifts the tooling by connecting the lifting ring through the lifting rope 6. One end of the torque limiting shaft 5 passes through the engine rotor, the end tooth locking ring 20, the pressure plate assembly, the end tooth ring 21, the wrench 2 and the torque transmission ring 10 in sequence, and then the torque limiting plate 1, the fixed pressure plate 7 and the anti-torsion bracket 9 are installed on the torque limiting shaft 5. The anti-torsion bracket 9 is connected to the intermediate casing of the engine to prevent the tooling from rotating inside the engine, and the tooling is fixed by tightening the hexagonal nut 8.

[0057] Furthermore, during assembly, two symmetrical claws extend from both ends of the end tooth locking ring 20 , and the claws extended from both ends of the end tooth locking ring 20 are clamped into the grooves of the aircraft engine rotor for initial positioning.

[0058] For further information, see Figure 7A locking sleeve is provided on the outer side of the rotor, and the pressure plate assembly and the end tooth ring 21 are fixed in the locking sleeve. In the pressure plate assembly, the "ear-shaped" pressure blocks at both ends of the pressure plate 4 contact the back of the end tooth locking ring 20, and the pressure plate assembly is pressed by the nut 3. The arc-shaped end tooth locking ring 20 undergoes elastic deformation under the pressure of the pressure plate 4. The arc becomes flat under the action of pressure, and the end teeth located at the high point of the arc are displaced in the direction of pressure, that is, the distance between the end teeth of the end tooth locking ring 20 and the end tooth ring 21 becomes larger.

[0059] Furthermore, the locking sleeve is installed on the wrench 2, the wrench 2 is connected to the torque transmission ring 10, and the torque booster is connected through the torque transmission ring 10. The locking sleeve assembly is tightened through the external thread on the engine rotor using a torque wrench to ensure the torque requirement.

[0060] Furthermore, the camera 16 is turned on and the motor 14 is started, and the synchronous wheel 12 will rotate along the synchronous belt 11. When the synchronous wheel 12 rotates, it pushes the camera mounting block 15 to rotate together around the center axis of the pressure plate in the circular groove; during the rotation process, the camera 16 begins to observe the position of the end teeth, and when it reaches the ideal observation position, the motor stops rotating; by observing the relative position of the end tooth lock ring and the teeth on the end tooth ring, the position of the locking sleeve assembly is rotated so that the end teeth can be well engaged to prevent the locking sleeve from rotating.

[0061] Further, disengage the wrench 2 and loosen the nut 3. Since the end tooth locking ring 20 produces elastic deformation under pressure, when the pressure is removed, the locking ring will return to its original shape. At this time, the end tooth locking ring 20 will be affected by the elastic force of the material to realize the engagement of the teeth, thereby fixing the front axle locking sleeve.

[0062] Further, in the embodiment of the present invention, see Figure 6 A first end tooth is circumferentially opened on the end face of the end tooth ring 21, and the first end tooth is processed as a full circle of end teeth on the circumferential end face of the end tooth ring 21. A local second end tooth is opened on the end face of the end tooth locking ring 20, and the second end tooth is only processed at both ends of the local circumferential end face of the end tooth locking ring 20.

[0063] The embodiment of the present invention realizes the assembly of the end tooth lock ring in the blind cavity, improving the scientific nature and assembly accuracy of the end tooth lock ring assembly. It reduces the repeated disassembly and assembly process of parts and auxiliary tools such as tooling, saves time and labor, and improves the assembly efficiency of the end tooth lock ring of the high-pressure rotor support assembly; at the same time, it can accurately reflect the assembly position status, accurately guide the assembler to judge the assembly position, make correct position adjustments in time, and improve the assembly qualification rate; it reduces the damage to the part surface caused by artificially applying external force to adjust the position of the end tooth lock ring when the rear end teeth are not engaged in the disassembly or assembly of the end tooth lock ring blind cavity without disassembling the parts, thereby improving the assembly quality of the end tooth lock ring blind cavity.

[0064] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pressure plate assembly for high-pressure rotor end gear lock ring blind cavity assembly, characterized in that: It comprises a pressing plate (4), wherein the pressing plate (4) is used to press the end tooth locking ring (20) to be assembled; The pressure plate (4) is provided with a base, a synchronous belt (11) is provided on the base, one side of the base is rotatably connected to a synchronous wheel assembly, and the synchronous wheel assembly can rotate circumferentially along the synchronous belt (11); The synchronous wheel assembly is provided with an image acquisition unit; An end tooth ring (21) is provided on one side of the pressure plate assembly, and an end tooth locking ring (20) is provided on the other side; The end tooth ring (21) is provided with a first end tooth in the circumferential direction, and the end surface of the end tooth locking ring (20) is provided with a partial second end tooth, wherein the first end tooth and the second end tooth are capable of meshing; The ear-shaped pressing blocks at both ends of the pressing plate (4) contact the back side of the end tooth locking ring (20).

2. A pressure plate assembly for blind cavity assembly of high-pressure rotor end gear lock ring according to claim 1, characterized in that: The synchronous wheel assembly comprises a mounting block (15), and the mounting block (15) is rotatably connected to the base; The mounting block (15) is located on one side of the synchronous belt (11), a synchronous wheel (12) is provided on the mounting block (15), the synchronous wheel (12) is connected to the drive unit, and the synchronous wheel (12) is engaged with the synchronous belt (11); The image acquisition unit is mounted on a mounting block (15).

3. A pressure plate assembly for blind cavity assembly of high-pressure rotor end gear lock ring according to claim 2, characterized in that: An annular groove is provided on the side wall of the base in the circumferential direction, and a guide wheel (19) is provided in the annular groove. One end of the guide wheel (19) is slidably connected to the annular groove, and the other end is connected to the mounting block (15).

4. The pressure plate assembly for blind cavity assembly of high-pressure rotor end gear lock ring according to claim 2, characterized in that: The driving unit is a motor (14), the motor (14) is connected to a turbine reducer (13), and the turbine reducer (13) is arranged on a mounting block (15); The lower end of the turbine reducer (13) is connected to a synchronous wheel shaft (17), the lower end of the synchronous wheel shaft (17) is connected to a bearing (18), and the synchronous wheel (12) is mounted on the synchronous wheel shaft (17).

5. The pressure plate assembly for blind cavity assembly of high-pressure rotor end gear lock ring according to claim 2, characterized in that: The image acquisition unit is a camera (16).

6. A blind cavity assembly tool for a high-pressure rotor end gear lock ring, characterized in that: comprising the pressure plate assembly according to claim 1, The side of the end tooth ring (21) away from the pressure plate assembly is connected to the torque transmission assembly.

7. The blind cavity assembly tool for the high-pressure rotor end gear lock ring according to claim 6, characterized in that: The end tooth locking ring (20) is installed on the end of the rotor to be fixed, the outer side of the rotor is provided with a locking sleeve, and the pressure plate assembly and the end tooth ring (21) are both arranged in the locking sleeve; The torque transmission component is connected to the locking sleeve.

8. The blind cavity assembly tool for the high-pressure rotor end gear lock ring according to claim 7, characterized in that: The end gear ring (21) is welded to the locking sleeve.

9. The blind cavity assembly tool for the high-pressure rotor end gear lock ring according to claim 7, characterized in that: It also includes a torque limiting shaft (5), which sequentially passes through the rotor, the end gear locking ring (20), the pressure plate assembly, the end gear ring (21), and the torque transmission assembly; The end of the torque-limiting shaft (5) is connected to the anti-torsion bracket (9).

10. The blind cavity assembly tool for the high-pressure rotor end gear lock ring according to claim 7, characterized in that: The torque transmission assembly comprises a wrench (2), and the wrench (2) is sleeved on the outside of the locking sleeve; The wrench (2) is connected to the torque transmission ring (10).

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