A large aero-engine accessory sub-packaging device

Abstract

The utility model provides a kind of large aero-engine accessory partial packing device, including control device and lift mechanism, translation mechanism and rotary fine adjustment mechanism installed on AGV full-automatic walking platform in turn, for realizing the movement in vertical direction, translation mechanism is installed on the moving part of lift mechanism, for realizing the movement in horizontal direction;Rotary fine adjustment mechanism is installed on the moving part of translation mechanism, and the accurate adjustment of engine accessory space position is realized by rotation;Through control device, lift mechanism, translation mechanism and rotary fine adjustment mechanism movement are automatically controlled, the automatic installation and disassembly of large aero-engine accessory are realized, the whole process not only does not need personnel to lift, and the installation accuracy of accessory is high, reduces the failure rate generated due to partial packing process of accessory.

Description

Technical Field

[0001] This utility model belongs to the field of aviation maintenance technology, specifically relating to a large aircraft engine accessory assembly device. Background Technology

[0002] An aircraft engine is a highly complex and precise thermodynamic machine whose normal operation depends on the coordinated work of numerous accessories. These accessories are typically concentrated in specific areas on the exterior of the engine, with the transmission housing serving as a critical mounting platform. Typically located at the bottom of the engine, the transmission housing's front and rear ends require the installation of essential engine accessories such as the air starter, fuel pump regulator, and constant speed transmission regulator. These accessories are usually secured with quick-release rings to enable rapid installation and removal (i.e., separate assembly), facilitating engine maintenance and repair.

[0003] However, the assembly of these accessories presents numerous technical challenges, specifically in the following aspects: 1. Operational difficulties arising from the accessory's own structure: The accessories to be installed, such as the air starter and fuel pump regulator, are all large and heavy components; for example, the fuel pump regulator can weigh approximately 50 kg, placing extremely high demands on handling and precise positioning. 2. These accessories are precision components with complex outer shell structures, and the external areas available for safe and effective force application are very limited. During operation, it is necessary to avoid impact damage to the accessory itself while overcoming its enormous weight, making operation extremely difficult. 3. The transmission housing and accessories are located under the engine, in an area with extremely limited space. This confined space severely restricts the operator's range of motion, posture, and the use of conventional tools, causing mutual interference and hindering the operation of multiple people working together.

[0004] Currently, due to the aforementioned difficulties, the on-site assembly of such large accessories necessitates the coordinated efforts of at least three operators. The process typically involves multiple people lifting the accessory manually or using simple tools, aligning it in a confined space, and simultaneously threading and tightening it through the quick-release ring. This operational mode results in extremely high labor intensity and very low work efficiency, severely impacting engine assembly and maintenance cycles. More importantly, this mode poses serious safety hazards. During multi-person coordination, uneven force, communication errors, or physical exhaustion can easily cause accessories to slip or collide, potentially damaging valuable precision components and threatening the personal safety of operators, such as causing industrial accidents like crushing or crushing injuries. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the large size, weight, and limited space of aero-engine accessories, which lead to high labor intensity and low efficiency in traditional accessory assembly. This invention provides a large-scale aero-engine accessory assembly device, comprising an AGV fully autonomous platform, a lifting mechanism, and a fine-tuning mechanism, enabling horizontal movement, vertical lifting, and rotation along the drive shaft of accessories. This solves the problem of assembling various accessories within the confined space under the aero-engine, providing a safe, efficient, and labor-saving assembly operation, thereby improving the overall level of engine maintenance.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A large aero-engine accessory assembly device includes: a control unit, an AGV (Automated Guided Vehicle) platform, a lifting mechanism, a translation mechanism, and a rotational fine-tuning mechanism. The lifting mechanism is mounted on the AGV platform and is used for vertical movement. The translation mechanism is mounted on the moving part of the lifting mechanism and is used for horizontal movement. The rotational fine-tuning mechanism is mounted on the moving part of the translation mechanism and is used for precise adjustment of the spatial position of the engine accessories. The control unit controls the movement of the lifting mechanism, translation mechanism, and rotational fine-tuning mechanism.

[0008] Furthermore, the lifting mechanism includes a first drive motor assembly, a first right-angle converter, a second right-angle converter, a drive shaft, four worm gear lifts, and a lifting mounting platform. The four worm gear lifts are divided into a first lifting group and a second lifting group, each group containing two worm gear lifts; a lifting mounting platform is fixedly installed on the top of each worm gear lift.

[0009] The output shaft of the first drive motor unit is driven and connected to the input shaft of the first right-angle converter; the two output shafts of the first right-angle converter respectively drive the two worm gear lifts connected to the first lift unit.

[0010] The two output shafts of the second right-angle converter respectively drive the two worm gear lifts connected to the second lift unit.

[0011] The two ends of the drive shaft are connected to the output end of the first right-angle converter and the input end of the second right-angle converter, respectively, so that the power energy of the first drive motor assembly is transmitted to each worm gear jack in sequence through the first right-angle converter, the drive shaft and the second right-angle converter, so that all worm gear jacks can move vertically synchronously.

[0012] Furthermore, the translation mechanism includes translation brackets, a second drive motor assembly, a linear module, a fixed connecting plate, and an adjusting connecting plate. Multiple translation brackets are used to fix the entire translation mechanism to the lifting mounting platform of the lifting mechanism.

[0013] The second drive motor assembly is used to drive the moving part of the linear module to move horizontally.

[0014] The fixed connecting plate is installed on the top of the linear module to support the rotary fine-tuning mechanism;

[0015] The adjusting connecting plate is fixed to the moving part of the linear module and is fixedly connected to the rotary fine-tuning mechanism to drive the rotary fine-tuning mechanism to move horizontally.

[0016] Furthermore, it also includes two guide support shafts, which are arranged parallel and symmetrically on both sides of the linear module, and their axial direction is consistent with the movement direction of the moving part of the linear module; wherein, one end of the guide support shaft is fixedly connected to the adjustment connecting plate, and the other end is slidably engaged with the translation bracket, so as to provide double-sided guide support for the linear module.

[0017] Furthermore, it also includes two load guide shafts, which are arranged parallel and symmetrically on both sides of the linear module, with their axial direction consistent with the movement direction of the moving part of the linear module. The load guide shaft is located below the guide support shaft, with one end fixed to the bottom of the adjusting connecting plate and the other end slidingly engaged with the translation bracket, and is used to support the weight of the adjusting connecting plate, the rotary fine-tuning mechanism, and the aircraft engine accessories.

[0018] Furthermore, there are four translation brackets, symmetrically distributed on both sides of the linear module, with two translation brackets on each side. Each translation bracket includes a top plate and an inverted T-shaped base vertically fixed to the bottom of one end of the top plate.

[0019] The top plate is fixedly connected to the lifting platform of the lifting mechanism;

[0020] A first connecting block is fixedly installed on the top surface of the base plate of the inverted T-shaped base. The first connecting block has a first mounting through hole for the guide support shaft to pass through. A second connecting block is fixedly installed on the bottom surface of the base plate of the inverted T-shaped base. The second connecting block has a second mounting through hole for the load guide shaft to pass through.

[0021] Furthermore, the rotary fine-tuning mechanism includes a mounting bracket, a worm gear reducer, a connecting shaft, a bearing assembly, a support base, and an adjustable clamp assembly. The mounting bracket supports the worm gear reducer and is fixedly connected to the moving part of the translation mechanism.

[0022] The connecting shaft is positioned between the support base and the worm gear reducer, transmitting the rotational driving force output from the worm gear reducer to the support base, causing it to rotate. The bearing assembly supports the connecting shaft.

[0023] The adjustable clamp assembly is slidably mounted on the horizontal part of the support base for supporting and clamping engine accessories; the adjustable clamp assembly can achieve slight horizontal movement on the support base, and its movement direction is along the movement direction of the translation mechanism.

[0024] Furthermore, the adjustable clamp assembly includes a support frame, clamps, and slide rails; the bottom sides of the support frame slide against the horizontal part of the support base via the slide rails, allowing for fine-tuning of the horizontal displacement of the support frame. The clamps are fixedly mounted on the support frame and are used to clamp and secure the mounting base at the bottom of the engine accessory.

[0025] Furthermore, the support frame includes two vertically symmetrical right-angled triangular frames and several connecting rods fixedly connected between the two right-angled triangular frames. The hypotenuses of the right-angled triangular frames and the connecting rods connecting the two hypotenuses constitute the inclined section of the support frame. A clamp is fixedly installed at the bottom end of the inclined section, with its axis aligned with the horizontal movement direction of the translation mechanism.

[0026] Furthermore, the support base is an L-shaped support structure formed by fixing several rods together.

[0027] The advantages of this utility model are:

[0028] 1. This utility model addresses the problem of large structure and heavy weight of accessories such as fuel pump regulators, air starters, and constant speed transmission device regulators by using an AGV fully autonomous walking platform to transport the accessories. This eliminates the need for personnel to move the accessories between the engine floor and the accessory area, greatly reducing the labor intensity of personnel.

[0029] 2. This utility model addresses the problem of limited space under aircraft engines by using a control device to automatically control the movement of the lifting mechanism, translation mechanism, and rotation fine-tuning mechanism to install accessories onto or disassemble them from the aircraft engine. The entire assembly process not only eliminates the need for personnel to lift the accessories, but also ensures high installation accuracy, reducing the failure rate of accessories caused by the assembly process.

[0030] 3. This utility model utilizes a control device to automatically control the movement of the lifting mechanism, translation mechanism, and rotation fine-tuning mechanism. By adjusting motion parameters such as lifting height and rotation angle, it can realize the sub-assembly operation of lower accessories of other engine models, and improve the automation level of sub-assembly of accessories such as fuel pump regulator, air starter, and constant speed transmission device regulator.

[0031] 4. The application prospects of this utility model aircraft engine accessory disassembly device are broad. It can be extended to the accessory replacement work scenario during field engine maintenance, thereby improving the efficiency of onboard engine accessory replacement. Attached Figure Description

[0032] Figure 1This is a three-dimensional structural diagram of the large aero-engine accessory assembly device of this utility model;

[0033] Figure 2 This is a front view of the large aero-engine accessory assembly device of this utility model;

[0034] Figure 3 This is a schematic diagram of the lifting mechanism in this utility model;

[0035] Figure 4 This is a schematic diagram of the translation mechanism in this utility model;

[0036] Figure 5 This is a schematic diagram of the rotary fine-tuning mechanism in this utility model.

[0037] In the diagram: 1-AGV fully autonomous walking platform, 2-control device, 3-lifting mechanism, 301-base, 302-worm gear reducer, 303-first drive motor assembly, 304-first right-angle commutator, 305-second right-angle commutator, 306-connecting shaft, 307-lifting mounting platform; 4-translation mechanism, 401-translation bracket, 402-second drive motor assembly, 403-linear module, 404-fixed connecting plate, 405-adjusting connecting plate, 406-guide support shaft, 407-load guide shaft; 5-rotation fine-tuning mechanism, 501-mounting bracket, 502-worm gear reducer, 503-connecting shaft, 504-bearing assembly, 505-support seat, 506-adjustable clamp assembly. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0039] Reference Figures 1-4 This utility model provides a large-scale aircraft engine accessory assembly device, including an AGV fully automated walking platform 1, a control device 2, a lifting mechanism 3, a translation mechanism 4, and a rotational fine-tuning mechanism 5. The control device 2 controls the movement of the lifting mechanism 3, the translation mechanism 4, and the rotational fine-tuning mechanism 5. The lifting mechanism 3 is mounted on the AGV fully automated walking platform and is used to achieve vertical movement; the translation mechanism 4 is mounted on the moving part of the lifting mechanism 3 and is used to achieve horizontal movement; the rotational fine-tuning mechanism 5 is mounted on the moving part of the translation mechanism 4 and is used to drive the engine accessories to rotate, thereby achieving precise adjustment of the spatial position of the engine accessories.

[0040] Reference Figure 3The lifting mechanism 3 includes a base 301, a worm gear lift 302, a first drive motor assembly 303, a first right-angle commutator 304, a second right-angle commutator 305, a drive shaft 306, and a lifting mounting platform 307. The base 301 is fixedly mounted on the AGV fully autonomous walking platform 1, serving as the mounting base for other components in the lifting mechanism. Four vertically arranged worm gear lifts 302 are symmetrically fixed on the base. The first drive motor assembly 303 provides the power source, and its output shaft is connected to the input shaft of the first right-angle commutator 304 via a key. The first right-angle commutator 304 has three output shafts; the two output shafts perpendicular to its input shaft are respectively connected to the input shafts of the two symmetrically arranged worm gear lifts via keys. The second right-angle commutator 304 is positioned between the other two worm gear jacks, and its output shaft is connected to the input shaft of the two worm gear jacks. The input shaft of the second right-angle commutator 304 is connected to the third output shaft of the first right-angle commutator 303 via a transmission shaft 306, enabling the first and second right-angle commutators to simultaneously drive the four worm gear jacks for lifting and lowering movements. Each worm gear jack has a fixed lifting mounting platform 307 on its moving part to support the fixed translation mechanism. During operation, the first drive motor assembly drives the worm gear jack through the right-angle commutator, causing the lifting mounting platform 307 to rise and fall vertically, thus achieving the lifting and lowering function of large accessories such as the fuel pump regulator. This lifting mechanism 3 has advantages such as high load-bearing capacity, smooth movement, and high repeatability. Specifically, the output shaft of the right-angle commutator is connected to the input shaft of the worm gear jack, and / or the transmission shaft is connected to the right-angle commutator via a universal coupling. The first drive motor assembly includes a first drive motor and a reducer connected to the first drive motor. The first drive motor is a servo motor.

[0041] Reference Figure 4The translation mechanism 4 includes a translation bracket 401, a second drive motor assembly 402, a linear module 403, a fixed connecting plate 404, an adjusting connecting plate 405, a load support shaft 406, and a guide support shaft 407. The translation mechanism 4 is fixedly connected to the lifting platform of the lifting mechanism 3 via four symmetrically arranged translation brackets 401. The linear module 403 is fixed between the four translation brackets with screws, and its input end is connected to the output shaft of the second drive motor assembly 402, driving the linear module to move horizontally. The fixed connecting plate 404 is fixedly disposed on the top of the linear module 403 to support the rotary fine-tuning mechanism 5; the adjusting connecting plate 405 is fixedly installed on the end face of the moving rod on the linear module 403 to drive the rotary fine-tuning mechanism to move horizontally. The linear module 403 has two parallel and symmetrically arranged guide support shafts 406 on both sides. The axial direction of the guide support shafts 406 is consistent with the movement direction of the moving part of the linear module. One end of the guide support shaft 406 is fixedly connected to the adjusting connecting plate 405, and the other end is slidably engaged with the translation bracket 401 through a slide rail. It is used to provide guidance and support on both sides for the moving part of the linear module to prevent the moving part of the linear module from tilting during movement, thereby ensuring smooth movement and positioning accuracy. It also includes two symmetrically arranged load guide shafts 407, which are located below the guide support shafts 406. One end of the load guide shaft 407 is fixedly connected to the bottom of the adjusting connecting plate 405, and the other end is slidably engaged with the translation bracket 401 through another slide rail. It is used to support the weight of the adjusting connecting plate 405, the rotary fine adjustment mechanism, and the aircraft engine accessories.

[0042] Reference Figure 5The rotary fine-tuning mechanism 5 includes a mounting bracket 501, a worm gear reducer 502, a connecting shaft 503, a bearing assembly 504, a support base 505, and an adjustable clamp assembly 506. The worm gear reducer 502 is fixedly mounted on the top of the mounting bracket 501, and the bottom of the mounting bracket 501 is supported on the fixed connecting plate of the translation mechanism 4, and is fixedly connected to the end face of the moving rod on the linear module 403 via a connector. One end of the connecting shaft 503 is connected to the output end of the worm gear reducer 502, and the other end is fixedly connected to the support base 505, with the shaft body passing through the bearing assembly 504. The adjustable clamp assembly 506 is slidably mounted on the horizontal part of the support base 505 and is used to clamp and fix large accessories such as the engine and fuel pump regulator. The adjustable clamp assembly 506 includes a support frame, clamps, and slide rails. The support base 505 is an L-shaped support structure fixed by several rods. The support frame consists of two vertically symmetrical right-angled triangular frames and several connecting rods connecting the right-angled triangular frames. The clamps are fixedly installed at the bottom end of the inclined section of the support frame, with their axis direction consistent with the horizontal movement direction of the translation mechanism. The inclined section of the support frame supports the engine accessory, and the clamps are used to fix the bottom mounting base of the engine accessory to the support frame. The bottom sides of the support frame slide with the horizontal part of the support base 505 through the slide rails, which are used to fine-tune the horizontal displacement of the support frame, thereby achieving a slight adjustment of the horizontal position of the engine accessory.

[0043] The worm gear reducer is used to drive the support base 505 to rotate via the connecting shaft, thereby adjusting the spatial position of large accessories such as the fuel pump regulator. During installation, the worm gear reducer is manually adjusted to fine-tune the spatial position of the accessories, ensuring accurate positioning of the accessories and the upper positioning pin of the engine housing. Manual adjustment allows for precise positioning even with small distances, making the operation more convenient. In addition, if there are errors in vehicle movement, fine-tuning can compensate for them, preventing damage to the product from large-scale vehicle movement.

[0044] In this utility model, the AGV fully autonomous walking platform is a purchased component, as described above. Figure 1The AGV fully autonomous walking platform includes Mecanum wheelsets, a drive unit, a control system, a power source, and a chassis. Mecanum wheelsets are omnidirectional wheelsets, allowing the mobile chassis to move in any direction without changing direction or turning. The drive unit consists of four independent servo motors, each driving and controlling the rotation of the Mecanum wheelsets. Because the four wheels are independently driven by motors, based on the characteristics of the motors themselves, when energized, the motors will lock their current position and maintain it. Based on this characteristic, unless an action command is sent, the entire vehicle will remain stationary. Even under certain external forces, the current wheel position will remain unchanged, achieving parking braking and ensuring the stability and reliability of the entire vehicle during assembly and disassembly. It is equipped with safety sensor edges at both the front and rear, and features an active brake to prevent accidental collisions between the vehicle and people or other objects, ensuring personnel safety during operation.

[0045] This utility model's disassembly device is also equipped with a wired adapter or a wireless adapter (remote control) for realizing omnidirectional movement, lifting, translation, and rotation mechanism posture adjustment of the entire vehicle, speed gear adjustment, control mode selection, reset, power source control, emergency stop, and other functions. The lifting mechanism is equipped with a power-off braking function.

[0046] The working principle of this dispensing device:

[0047] The disassembly process for accessories such as the fuel pump regulator is as follows: First, the support frame on the rotary fine-tuning mechanism is placed on the bottom of the accessory's mounting base, and the mounting base at the bottom of the accessory is secured with clamps. Then, the quick-release ring on the accessory is manually disconnected, allowing the accessory to detach from the accessory transmission housing. The translation mechanism is then controlled by a remote controller to move the accessory horizontally from under the engine to a safe position. Next, the lifting mechanism is controlled to lower the accessory to a height where it does not interfere with the aircraft engine's thrust reverser. Finally, the disassembled accessory is transported to the accessory storage area using an AGV (Automated Guided Vehicle) platform.

[0048] The installation process for accessories such as the fuel pump regulator is as follows: First, the accessory is fixed to the carrier frame of the rotary fine-tuning mechanism. The AGV fully autonomous walking platform is then moved to the accessory installation position below the aircraft engine using a remote control. The engine accessory is then lifted to a height parallel to the accessory transmission housing mounting base using a lifting mechanism. Next, the accessory is moved to the locating pin hole position on the accessory mounting base using a translation mechanism. Finally, the accessory is aligned with the accessory transmission housing mounting base using the rotary fine-tuning mechanism. During this process, the worm gear reducer can be manually adjusted to achieve fine-tuning of the spatial angle, and the carrier frame of the adjustable clamp assembly can be manually pushed to achieve fine-tuning of the accessory's horizontal position. Finally, the quick-release ring is manually installed to fix the accessory in the accessory transmission housing, completing the installation of accessories such as the fuel pump regulator.

[0049] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A large aero-engine accessory assembly device, characterized in that, Includes: control device, AGV fully automatic walking platform, lifting mechanism, translation mechanism and rotation fine adjustment mechanism; The lifting mechanism is installed on the AGV fully automatic walking platform and is used to realize vertical movement; The translation mechanism is mounted on the moving part of the lifting mechanism and is used to achieve horizontal movement; The rotary fine-tuning mechanism is mounted on the moving part of the translation mechanism and is used to achieve precise adjustment of the spatial position of the engine accessories; The control device is used to control the movement of the lifting mechanism, the translation mechanism, and the rotation fine-tuning mechanism.

2. The large aero-engine accessory assembly device according to claim 1, characterized in that, The lifting mechanism includes a first drive motor assembly, a first right-angle converter, a second right-angle converter, a drive shaft, four worm gear lifts, and a lifting installation platform; The four worm gear jacks are divided into a first jack group and a second jack group, each group containing two worm gear jacks; a lifting platform is fixedly installed on the top of each worm gear jack. The output shaft of the first drive motor unit is driven and connected to the input shaft of the first right-angle converter; the two output shafts of the first right-angle converter respectively drive the two worm gear lifts connected to the first lifting unit. The two output shafts of the second right-angle converter respectively drive the two worm gear lifts connected to the second lift unit; The two ends of the drive shaft are respectively connected to the output end of the first right-angle converter and the input end of the second right-angle converter, so that the power of the first drive motor assembly is transmitted to each worm gear jack in sequence through the first right-angle converter, the drive shaft and the second right-angle converter, so that all worm gear jacks can move vertically synchronously.

3. The large aero-engine accessory assembly device according to claim 2, characterized in that, The translation mechanism includes a translation bracket, a second drive motor assembly, a linear module, a fixed connecting plate, and an adjusting connecting plate; The plurality of the aforementioned translation brackets are used to fix the translation mechanism as a whole to the lifting mounting platform of the lifting mechanism; The second drive motor assembly is used to drive the moving part of the linear module to move horizontally; The fixed connecting plate is installed on the top of the linear module to support the rotary fine-tuning mechanism; The adjusting connecting plate is fixed to the moving part of the linear module and is fixedly connected to the rotary fine-tuning mechanism to drive the rotary fine-tuning mechanism to move horizontally.

4. The large aero-engine accessory assembly device according to claim 3, characterized in that, It also includes two guide support shafts, which are arranged parallel and symmetrically on both sides of the linear module, and their axial direction is consistent with the movement direction of the moving part of the linear module; wherein, one end of the guide support shaft is fixedly connected to the adjusting connecting plate, and the other end is slidably engaged with the translation bracket, so as to provide double-sided guide support for the linear module.

5. The large aero-engine accessory assembly device according to claim 4, characterized in that, It also includes two load guide shafts, which are arranged parallel and symmetrically on both sides of the linear module, and their axial direction is consistent with the movement direction of the moving part of the linear module; The load guide shaft is located below the guide support shaft. One end of the shaft is fixed to the bottom of the adjusting connecting plate, and the other end is slidably engaged with the translation bracket. It is used to support the weight of the adjusting connecting plate, the rotary fine-tuning mechanism, and the aircraft engine accessories.

6. The large aero-engine accessory assembly device according to claim 5, characterized in that, The number of translation brackets is four, symmetrically distributed on both sides of the linear module, with two translation brackets on each side; Each of the translation brackets includes a top plate and an inverted T-shaped base that is vertically fixed to the bottom of one end of the top plate; The top plate is fixedly connected to the lifting platform of the lifting mechanism; A first connecting block is fixedly installed on the top surface of the base plate of the inverted T-shaped base. The first connecting block has a first mounting through hole for the guide support shaft to pass through. A second connecting block is fixedly installed on the bottom surface of the base plate of the inverted T-shaped base. The second connecting block has a second mounting through hole for the load guide shaft to pass through.

7. The large aero-engine accessory assembly device according to claim 1, characterized in that, The rotary fine-tuning mechanism includes a mounting bracket, a worm gear reducer, a connecting shaft, a bearing assembly, a support base, and an adjustable clamp assembly; The mounting bracket is used to support the worm gear reducer and is fixedly connected to the moving part of the translation mechanism; The connecting shaft is disposed between the support base and the worm gear reducer, and is used to transmit the rotational driving force output by the worm gear reducer to the support base, thereby driving the support base to rotate. The bearing assembly is used to support the connecting shaft; The adjustable clamp assembly is slidably mounted on the horizontal part of the support base for supporting and clamping engine accessories; the adjustable clamp assembly can achieve slight horizontal movement on the support base, and its movement direction is along the movement direction of the translation mechanism.

8. The large aero-engine accessory assembly device according to claim 7, characterized in that, The adjustable clamp assembly includes a support frame, a clamp, and a slide rail; the bottom two sides of the support frame slide against the horizontal part of the support base via the slide rail, which is used to fine adjust the horizontal displacement of the support frame; The clamp is fixedly mounted on the support frame and is used to clamp and fix the mounting base at the bottom of the engine accessory.

9. The large aero-engine accessory assembly device according to claim 8, characterized in that, The support frame includes two vertically symmetrical right-angled triangular frames and several connecting rods fixedly connected between the two right-angled triangular frames; The hypotenuse of the right-angled triangular frame and the connecting rod connecting the two hypotenuses constitute the inclined part of the support frame; The clamp is fixedly installed at the bottom end of the inclined surface, and its axial direction is consistent with the horizontal movement direction of the translation mechanism.

10. The large aero-engine accessory assembly device according to claim 7, characterized in that, The support base is an L-shaped support structure formed by fixing several rods together.

Images