Torsion multiplier for assembling aero-engine nut part

Abstract

The invention discloses a torque multiplier for aero-engine nut part assembly, which comprises a shell, a sealing ring and a reduction gearbox upper cover are fixedly mounted above the shell, an input shaft is movably mounted in the shell through a bearing, and a torque amplification mechanism is mounted in the shell; the torque amplifying mechanism comprises an input gear, a transmission shaft, a large transmission gear, a small transmission gear and an output shaft assembly, and the large-torque nut installation device has the beneficial effects that through structural optimization and application of the visual inspection technology, the problems that existing equipment is low in efficiency, difficult to assemble and the like are solved, and the installation efficiency is improved. The assembling process is easier, faster and more visual, and the effect is remarkable.

Description

Technical Field

[0001] This invention relates to the field of high-torque nut installation technology, specifically a torque multiplier for assembling nut parts for aero-engines. Background Technology

[0002] Aero-engines are a cutting-edge manufacturing technology, requiring precise assembly standards. The assembly requirements for each sub-component are quite stringent, and assembly quality is crucial for the future smooth operation of the engine. However, the domestic market lacks torque multipliers for mounting nuts on the main shaft of aero-engines, necessitating the import of foreign equipment. Since imported equipment is not well-suited to the needs of domestic enterprises, it is inefficient and difficult to use. With existing torque amplifiers, manual lifting and alignment of the holes are relied upon, with experience determining successful alignment, leading to assembly difficulties and prolonged adjustments without proper installation. To address these issues, this invention provides a torque multiplier for assembling nut components in aero-engines, making the assembly of such nuts easier, faster, and more intuitive. While existing technologies may already offer solutions to these problems, this invention aims to provide an alternative or replacement solution. Summary of the Invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solution: a torque multiplier for assembling nut parts for aero-engines, comprising a housing, a sealing ring and a gearbox cover fixedly installed on the top of the housing, an input shaft movably installed inside the housing via a bearing, and a torque amplification mechanism installed inside the housing;

[0004] The torque amplification mechanism includes: an input gear, a drive shaft, a large drive gear, a small drive gear, and an output shaft assembly;

[0005] The input gear is fixedly mounted on the input shaft, the transmission shaft is mounted on the housing via bearings, the large transmission gear is fixedly mounted on the rear end of the transmission shaft and meshes with the input gear, the small transmission gear is fixedly mounted on the front end of the transmission shaft, and the output shaft assembly is mechanically engaged with the small transmission gear.

[0006] Preferably, the output shaft assembly includes: an output shaft, an output gear, and a vision inspection system;

[0007] The output shaft is movably mounted in the housing via bearings, the output gear is mounted on the middle end of the output shaft via splines, and the output gear and the small transmission gear are mechanically coupled. The vision inspection system is fixedly mounted on the rear end of the output shaft.

[0008] Preferably, the visual inspection system includes: an encoder and a code disk;

[0009] The encoder is fixedly mounted on the top of the output shaft, and the code disk is fixedly mounted on the encoder.

[0010] Preferably, the front end of the output shaft has mating teeth that cooperate with the nut, and the middle end of the output shaft is connected to the output gear via a spline.

[0011] Preferably, the encoder has an inner ring connected to the output shaft and an outer ring connected to the fixed housing.

[0012] Preferably, the torque amplification mechanism is a gear set of a fixed-axis gear train.

[0013] Beneficial effects

[0014] This invention provides a torque multiplier for assembling nut parts for aero-engines, offering the following advantages: By employing a torque amplification mechanism composed of a fixed-axis gear train, this invention provides a stable and reliable torque amplification effect, enabling operators to complete the assembly of high-torque nuts with relatively small input torque, significantly reducing labor intensity. Simultaneously, an integrated vision inspection system monitors the output shaft's rotation angle and position in real time, providing precise data feedback and effectively avoiding assembly difficulties caused by traditional reliance on manual experience, greatly improving assembly accuracy and efficiency. Furthermore, the toothed and splined connection design at the output shaft's front end enhances transmission rigidity and alignment. Combined with the sealing structure and bearing configuration, this comprehensively improves the equipment's adaptability and reliability in the harsh working environment of aero-engines. This design not only fills a domestic technological gap and solves the problems of poor compatibility and difficulty in use with imported equipment, but also lays the foundation for intelligent upgrading and data traceability in the assembly process, making aero-engine nut assembly easier, faster, and more intuitive, demonstrating significant practical value and economic benefits. Attached Figure Description

[0015] Figure 1 This is a first front-view three-dimensional structural diagram of a torque multiplier for assembling nut parts for aero-engines according to the present invention.

[0016] Figure 2 This is a second main perspective three-dimensional structural diagram of a torque multiplier for assembling nut parts for aero-engines according to the present invention.

[0017] Figure 3 This is a top view of the torque multiplier for assembling nut parts for aero-engines, as described in this invention.

[0018] Figure 4 This is a front cross-sectional view of a torque multiplier for assembling nut parts for aero-engines, as described in this invention.

[0019] In the diagram: 1. Housing, 2. Gearbox cover, 3. Input shaft, 4. Input gear, 5. Drive shaft, 6. Large drive gear, 7. Small drive gear, 8. Output shaft, 9. Output gear, 10. Encoder, 11. Code disk. Detailed Implementation

[0020] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please refer to Figure 1-4 1. A torque multiplier for assembling nut parts for aero-engines, comprising a housing 1, a sealing ring and a gearbox cover 2 fixedly installed on the top of the housing 1, an input shaft 3 movably installed inside the housing 1 via a bearing, and a torque amplification mechanism installed inside the housing 1.

[0022] The torque amplification mechanism includes: an input gear 4, a drive shaft 5, a large drive gear 6, a small drive gear 7, and an output shaft 8 assembly;

[0023] The input gear 4 is fixedly mounted on the input shaft 3, the transmission shaft 5 is mounted on the housing 1 through bearings, the large transmission gear 6 is fixedly mounted on the rear end of the transmission shaft 5 and meshes with the input gear 4, the small transmission gear 7 is fixedly mounted on the front end of the transmission shaft 5, and the output shaft 8 assembly is mechanically engaged with the small transmission gear 7.

[0024] In use, the operator first moves the device to the designated position, and then fixes it to the rotor nut through the threaded hole on the outside of the housing 1. The housing 1 mainly serves to fix the external parts and also to fix the torque amplification mechanism internally. When the rotor nut needs to be tightened, the operator uses a tightening gun as a power element to connect to the input shaft 3. When the tightening gun rotates, it drives the input shaft 3 to rotate inside the housing 1 through the bearing, which drives the fixedly installed input gear 4 to start rotating. At the same time, the input gear 4 meshes with the large transmission gear 6, and the large transmission gear 6 rotates together, driving the fixedly connected belt drive shaft 5 and the small transmission gear 7 to rotate. The small transmission gear 7 drives the output shaft 8 assembly to rotate. When the device uses the small gear to drive the large gear twice, the speed will decrease and the torque will increase, thereby achieving a high torque to drive the output shaft 8 assembly to rotate.

[0025] In the specific implementation process, the output shaft 8 assembly includes: output shaft 8, output gear 9, and vision inspection system;

[0026] The output shaft 8 is movably mounted in the housing 1 via bearings, the output gear 9 is mounted in the middle of the output shaft 8 via splines, and the output gear 9 and the small transmission gear 7 are mechanically engaged. The vision inspection system is fixedly mounted at the rear end of the output shaft 8.

[0027] In use, the operator engages the mating teeth at the front end of the output shaft 8 with the nut. When the nut needs to be tightened, the small transmission gear 7 drives the output gear 9 to rotate. Because of the torque amplification in the previous two cycles, the output gear 9 drives the output shaft 8 to rotate, thereby tightening the rotor nut. When the output shaft 8 is rotating to tighten the nut, the vision inspection system fixedly installed at the rear end of the output shaft 8 also starts working simultaneously.

[0028] In practical implementation, the visual inspection system includes: encoder 10 and code disk 11;

[0029] The encoder 10 is fixedly mounted on the top of the output shaft 8, and the code disk 11 is fixedly mounted on the encoder 10.

[0030] When the output shaft 8 is rotated to tighten the nut, the vision inspection system fixedly installed at the rear end of the output shaft 8 also starts working simultaneously. The encoder 10 has its inner ring connected to the rotating shaft and its outer ring connected to the fixed housing. It is used to monitor the rotation angle of the output end in real time, realize angle feedback and precise control. The code disk 11 makes it easy to see the rotation angle of the structure during operation, and can better provide feedback to the workers for easy observation and fine adjustment, ensuring output stability and operation accuracy.

[0031] In practical implementation, the front end of the output shaft 8 has mating teeth that cooperate with the nut, and the middle end of the output shaft 8 is connected to the output gear 9 via a spline. During use, the mating teeth at the front end of the output shaft 8 cooperate with the nut, and the middle end of the output shaft 8 is connected to the output gear 9 via a spline to transmit torque and allow axial movement.

[0032] In practical implementation, the encoder 10 has its inner ring connected to the output shaft 8 and its outer ring connected to the fixed housing. During use, it monitors the rotation angle of the output end in real time, enabling angle feedback and precise control, and dynamically adjusting the torque amplification factor to ensure output stability and operational accuracy.

[0033] In practical implementation, the torque amplification mechanism is a gear set of a fixed-axis gear train. Using a fixed-axis gear train as the torque amplification mechanism provides a stable, constant transmission ratio, high efficiency, and reliable torque amplification solution. It ensures that the output result of each tightening operation is precise and controllable.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torque multiplier for aircraft engine nut part assembly comprising a housing (1), characterized in that, The shell (1) is fixedly installed with a sealing ring and a reduction box upper cover (2), an input shaft (3) is movably installed in the shell (1) through a bearing, and a torque amplification mechanism is installed in the shell (1); The torque amplification mechanism comprises an input gear (4), a transmission shaft (5), a large transmission gear (6), a small transmission gear (7) and an output shaft (8) assembly; The input gear (4) is fixedly installed on the input shaft (3), the transmission shaft (5) is installed on the shell (1) through a bearing, the large transmission gear (6) is fixedly installed on the rear end of the transmission shaft (5), and the large transmission gear (6) is engaged with the input gear (4), the small transmission gear (7) is fixedly installed on the front end of the transmission shaft (5), and the output shaft (8) assembly is mechanically matched with the small transmission gear (7).

2. A torque multiplier for use in assembling a nut component of an aeroengine according to claim 1, wherein, The output shaft (8) assembly comprises an output shaft (8), an output gear (9) and a visual detection system; The output shaft (8) is movably installed in the shell (1) through a bearing, the output gear (9) is installed in the middle end of the output shaft (8) through a spline, and the output gear (9) is mechanically matched with the small transmission gear (7), and the visual detection system is fixedly installed on the rear end of the output shaft (8).

3. A torque multiplier for use in assembling a nut component of an aeroengine according to claim 2, wherein, The visual detection system comprises an encoder (10) and a code disc (11); The encoder (10) is fixedly installed on the top end of the output shaft (8), and the code disc (11) is fixedly installed on the encoder (10).

4. A torque multiplier for use in assembling a nut component of an aeroengine as claimed in claim 2, wherein, The front end of the output shaft (8) has a matching tooth matched with a nut, and the middle end of the output shaft (8) is connected with the output gear (9) through a spline.

5. A torque multiplier for use in assembling a nut component of an aeroengine as claimed in claim 3, wherein, The inner ring of the encoder (10) is connected with the output shaft (8), and the outer ring is connected with a fixed shell.

6. A torque multiplier for aircraft engine nut part assembly as claimed in claim 1, wherein, The torque amplification mechanism is a fixed shaft gear train gear set.

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