An accessory assisted installation device for an aeroengine

Abstract

The utility model provides an accessory auxiliary installation device for aero -engine, the utility model discloses a vehicle body, the mac wheel, clamping device, piston push rod no.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an accessory auxiliary installation device for aero engines. Background Technology

[0002] As the core power component of an aircraft, the performance and reliability of the aero-engine directly affect flight safety and efficiency. Aero-engines have a wide variety of accessories, including fuel pumps, oil pumps, generators, and controllers. The installation accuracy and quality of these accessories have a crucial impact on the overall engine performance. Accessory installation is an extremely critical and complex step in the aero-engine assembly process. However, currently, the installation of aero-engine accessories mainly relies on manual operation or traditional simple tooling. During manual installation, due to the large size and weight of aero-engine accessories, operators not only experience extremely high labor intensity during handling and installation but also find it difficult to guarantee installation accuracy. Even slight deviations can lead to loose interfaces between the accessory and the engine body, affecting the normal operation of the accessory and even causing malfunctions such as increased vibration and oil leaks. While traditional simple tooling can assist installation to some extent, its function is relatively limited and cannot meet the diverse installation needs of accessories of different models and specifications. Moreover, its positioning and fixing effects are limited, and it cannot perform precise fine-tuning of accessories during installation, making it difficult to meet the stringent "zero-error" requirements for accessory installation in aero-engines. Therefore, we propose an auxiliary installation device for aero-engine accessories to solve the above problems. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides an auxiliary installation device for aircraft engine accessories, which can effectively improve installation accuracy, reduce the labor intensity of operators, meet the installation requirements of different accessory models, and can rotate at various angles while moving along three or more axes (X, Y, and Z). It can enable rapid installation and fine-tuning while ensuring human safety.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] An auxiliary mounting device for an aircraft engine includes a chassis, a roller, a clamping device, a piston push rod, a worm gear reducer motor, a rotating shaft, a motor, a piston push rod 2, and a motor 2. The rollers are mounted at all four corners of the chassis bottom. The clamping device is connected to the output end of the worm gear reducer motor via the rotating shaft. The output end of the piston push rod 1 is connected to the worm gear reducer motor. The motor 1 drives the piston push rod 1 to rotate. The piston push rod 2 is mounted on the upper end of the chassis, and the motor 2 drives the piston push rod 2 to rotate.

[0006] Furthermore, the Mecanum wheel is a Mecanum wheel.

[0007] Furthermore, the piston rod is vertically mounted on the top of the vehicle body and is driven by hydraulic or electric means.

[0008] Furthermore, the output shaft of the worm gear reducer motor is coaxially connected to the rotating shaft.

[0009] Furthermore, the clamping device includes two symmetrically arranged clamping arms, with rubber anti-slip pads provided on the inner side of the clamping arms. The clamping arms are opened and closed by electric or hydraulic drive, and are used to clamp and fix aircraft engine accessories.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] 1. High-precision multi-directional adjustment: The X and Y axes are translated and rotated in place by the Mecanum wheel, and the Z axis lifting and pitch angle adjustment is completed by the piston push rods one and two. The worm gear reducer motor and the rotating shaft are combined to achieve horizontal rotation. Multiple components work together to accurately control the three-dimensional spatial position and installation angle of the accessories, which greatly improves the installation accuracy.

[0012] 2. Highly efficient and safe operation: The electric or hydraulically driven clamping device, combined with rubber anti-slip pads, stably clamps heavy accessories, avoiding the safety hazards of manual handling and installation; the combination of remote control operation and manual fine adjustment reduces the time personnel spend near the engine, significantly reducing labor intensity and speeding up installation efficiency while ensuring personnel safety.

[0013] 3. Strong compatibility and flexibility: The modular structure design allows for flexible adjustment of clamping device parameters and equipment movement trajectory according to the size, weight, and installation requirements of different accessory models, adapting to various installation scenarios and meeting the diverse installation needs of aero-engine accessories.

[0014] In summary, this auxiliary installation device for aero-engine accessories has broad applicability, addressing the current reliance on manual operation or traditional simple tooling for aero-engine accessory installation, as mentioned in the background section. During manual installation, the large size and weight of aero-engine accessories result in extremely high labor intensity for operators during handling and installation, and it is difficult to guarantee installation accuracy. Even slight deviations can lead to loose interfaces between the accessory and the engine body, affecting the accessory's normal operation and even causing malfunctions such as increased vibration and oil leaks. While traditional simple tooling can assist installation to some extent, its function is relatively limited and cannot meet the diverse installation needs of accessories of different models and specifications. Moreover, its positioning and fixing effects are limited, and it cannot perform precise fine-tuning of accessories during installation, making it difficult to meet the stringent "zero-error" requirements for accessory installation in aero-engines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Explanation of key component symbols:

[0018] 1-Car body, 2-Wheat wheel, 3-Clamping device, 4-Piston push rod one, 5-Worm gear reducer motor, 6-Rotating shaft, 7-Motor one, 8-Piston push rod two, 9-Motor two. Detailed Implementation

[0019] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples, but the examples given are not intended to limit the present utility model.

[0020] like Figures 1-2 As shown, the embodiment of this utility model includes a vehicle body 1, a wheel 2, a clamping device 3, a piston push rod 4, a worm gear reducer motor 5, a rotating shaft 6, a motor 7, a piston push rod 8, and a motor 9.

[0021] Mecanum wheels 2 are installed at the four corners of the bottom of the vehicle body 1. The vehicle body frame is welded from high-strength aluminum alloy (such as 6061-T6) with a load-bearing capacity of ≥500kg. The Mecanum wheels are arranged with inclined rollers, which can realize lateral translation, rotation and arbitrary angle movement, adapting to the precise positioning in the narrow space inside the aircraft engine compartment (such as the passage width ≤1.2m), with a movement accuracy of ±10mm.

[0022] The aluminum alloy body balances lightweight (weight ≤150kg) and rigidity (bending strength ≥200MPa). The four corner pulley layout forms a stable support surface, preventing the device from shaking during installation and ensuring the safety of accessory installation.

[0023] The clamping device 3 includes two symmetrical clamping arms with a 5mm thick rubber anti-slip pad with a Shore A hardness of 70A attached to the inside. The clamping arms are driven to open and close by an electric push rod (or hydraulic cylinder), with a maximum clamping force ≥1000N. The opening and closing range of the clamping arms is 0-300mm, which can accommodate aviation accessories of different sizes (such as fuel pumps, starters, etc.). The rubber anti-slip pads increase friction (friction coefficient ≥0.8) through a toothed design (tooth depth 1.5mm), preventing accessories from sliding and avoiding surface scratches caused by direct metal contact (protection accuracy ≤Ra1.6μm).

[0024] Electric (or hydraulic) drive can achieve closed-loop control of clamping force. Real-time monitoring by pressure sensor ensures uniform distribution of clamping force and avoids deformation of accessories due to local overload (e.g., clamping deformation of thin-walled parts ≤0.1mm).

[0025] Piston push rod 28 is vertically mounted on the top of the vehicle body and is driven by an electro-hydraulic hybrid drive (stroke 0-500mm, speed 5-20mm / s), with a positioning accuracy of ±0.5mm; Piston push rod 14 is horizontally set and is driven to rotate by motor 17 (servo motor) (angle range 0-90°), which, together with worm gear reducer motor 5 (reduction ratio 10:1), realizes the horizontal displacement and angle adjustment of the clamping device;

[0026] The output shaft of the worm gear reducer motor 5 is coaxially connected to the rotating shaft 6, driving the clamping device 3 to achieve 360° continuous rotation with a rotation accuracy of ±0.1°. It has a self-locking function to prevent accidental rotation. The three-dimensional adjustment system can accurately align the accessories to the installation interface (X / Y / Z axis positioning error ≤0.5mm, angle error ≤0.3°), meeting the high-precision installation requirements of aero-engine accessories (such as bolt hole coaxiality ≤0.2mm).

[0027] Power transmission reliability: The self-locking characteristics of the worm gear reducer motor (efficiency ≥60%) ensure stable angular position during installation and avoid displacement caused by vibration; the hydraulic buffer design of the piston push rod (buffer stroke 20mm) absorbs the impact during adjustment and improves the smoothness of operation.

[0028] All electrical components mentioned in the text are electrically connected to an external controller and power supply, and the controller can be a conventional known device such as a computer that provides control.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary mounting device for an aircraft engine accessory, comprising a chassis (1), a wheel (2), a clamping device (3), a piston push rod (4), a worm gear reducer motor (5), a rotating shaft (6), a motor (7), a piston push rod (8), and a motor (9), characterized in that, The four corners of the bottom of the vehicle body (1) are equipped with the wheat wheels (2). The clamping device (3) is connected to the output end of the worm gear reducer motor (5) through the rotating shaft (6). The output end of the piston push rod (4) is connected to the worm gear reducer motor (5). The motor (7) drives the piston push rod (4) to rotate. The upper end of the vehicle body (1) is equipped with a piston push rod (8). The motor (9) drives the piston push rod (8) to rotate.

2. The accessory auxiliary installation device for an aircraft engine as described in claim 1, characterized in that, The Mecanum wheel (2) is a Mecanum wheel.

3. The accessory auxiliary installation device for an aircraft engine as described in claim 2, characterized in that, The piston push rod 2 (8) is vertically mounted on the top of the vehicle body (1) and is driven by hydraulic or electric means.

4. The accessory auxiliary installation device for an aircraft engine as described in claim 3, characterized in that, The output shaft of the worm gear reducer motor (5) is coaxially connected to the rotating shaft (6).

5. The accessory auxiliary installation device for an aircraft engine as described in claim 4, characterized in that, The clamping device (3) includes two symmetrically arranged clamping arms. The inner side of the clamping arms is provided with a rubber anti-slip pad. The clamping arms are opened and closed by electric or hydraulic drive, and are used to clamp and fix aircraft engine accessories.

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