Aircraft condenser core replacement positioning tool

Abstract

This application relates to the field of aircraft condenser core replacement technology, and proposes a positioning fixture for aircraft condenser core replacement, comprising: a base plate; a main positioning seat disposed on the base plate; a lug positioning assembly disposed on the base plate, including a longitudinal positioning mechanism and a lateral positioning mechanism; the longitudinal positioning mechanism is connected to the main positioning seat by a longitudinal lug positioning beam through a positioning shaft, and cooperates with multiple longitudinal lug positioning seats to form longitudinal positioning; the lateral positioning mechanism includes a lateral lug sliding seat, a lateral lug positioning shaft, and a lateral lug top rod; an interface docking assembly, including a hot air inlet docking assembly, an air outlet docking assembly, a cold air inlet docking assembly, and a cold air outlet docking assembly; and a positioning sleeve disposed on the interface docking assembly, the positioning sleeve being used to engage with the corresponding interface of the core. Through the synergistic action of the main positioning seat, the lug positioning assembly, and the interface docking assembly, precise positioning of the core is achieved, and the dimensional deviation meets the high-precision requirements of aviation maintenance.

Description

Technical Field

[0001] This application relates to the field of aircraft condenser core replacement technology, and more specifically, to a positioning fixture for replacing aircraft condenser cores. Background Technology

[0002] In the field of aviation maintenance, the replacement of the A320 aircraft condenser core requires high-precision positioning and welding of the hot / cold air inlet / outlet ports and lug assemblies. Existing traditional positioning fixtures have the following technical shortcomings:

[0003] Insufficient positioning accuracy: The lack of a dedicated positioning structure for the lug assembly (longitudinal / lateral) leads to poor interface sealing due to welding position deviation (such as dimensional deviation exceeding ±0.5mm), affecting condenser performance.

[0004] Structural design flaws: Traditional tooling is mostly an integral structure, which cannot adjust the positioning components according to the core model, and does not integrate movable parts (such as casters), requiring hoisting when moving, which increases the difficulty of operation.

[0005] Low operational efficiency: The positioning process relies on manual measurement and adjustment, which is time-consuming and lacks a quick locking mechanism. Displacement is prone to occur during welding, requiring repeated correction.

[0006] These problems seriously affect the quality and efficiency of aircraft condenser core replacement, and there is an urgent need to develop a new positioning tooling solution for aircraft condenser core replacement. Utility Model Content

[0007] To address at least one of the aforementioned technical problems, this application proposes a positioning fixture for replacing aircraft condenser cores.

[0008] In view of this, this application proposes a positioning fixture for replacing an aircraft condenser core, comprising: a base plate; a main positioning seat disposed on the base plate; a lug positioning assembly disposed on the base plate, including a longitudinal positioning mechanism and a lateral positioning mechanism; the longitudinal positioning mechanism is connected to the main positioning seat by a longitudinal lug positioning beam through a positioning shaft, and cooperates with multiple longitudinal lug positioning seats to form longitudinal positioning; the lateral positioning mechanism includes a lateral lug sliding seat, a lateral lug positioning shaft, and a lateral lug top rod; an interface docking assembly, including a hot air inlet docking assembly, an air outlet docking assembly, a cold air inlet docking assembly, and a cold air outlet docking assembly; and a positioning sleeve disposed on the interface docking assembly, the positioning sleeve being used to engage with the corresponding interface of the core.

[0009] In some feasible embodiments, the aircraft condenser core replacement positioning fixture also includes: a bent tube base, mounted on a base plate; a guide rail, mounted on the bent tube base, with the main positioning seat slidably mounted on the guide rail.

[0010] In some feasible implementations, the aircraft condenser core replacement positioning fixture also includes: adjusting shims and adjusting screws, located between the main positioning seat and the base plate, for adjusting the positioning height.

[0011] In some feasible methods, the aircraft condenser core replacement positioning fixture uses a cross roller guide.

[0012] In some feasible embodiments, the positioning fixture for replacing the aircraft condenser core also includes: a bracket, located below the base plate, for supporting the base plate; casters, located at the bottom of the bracket; and caster connecting plates, located on the casters, for locking the casters.

[0013] In some feasible embodiments, the aircraft condenser core replacement positioning fixture also includes: a locking assembly, located on the longitudinal positioning mechanism and the lateral positioning mechanism, for locking the longitudinal positioning mechanism and the lateral positioning mechanism.

[0014] In some feasible implementations, the locking assembly includes a locking washer and a locking nut for securing the longitudinal positioning mechanism and the lateral positioning mechanism.

[0015] In some feasible methods, the positioning fixture for replacing the aircraft condenser core also includes: a pipe bending clamp, which is set on the interface docking assembly to fix the pipeline.

[0016] In some feasible embodiments, the aircraft condenser core replacement positioning fixture also includes: a movable positioning seat, slidably mounted on a base plate, for adjusting the position of the condenser core.

[0017] In some feasible methods, the positioning tooling for replacing the aircraft condenser core includes: a large circular positioning sleeve, which is annular and has multiple positioning holes spaced apart; and a small circular positioning sleeve, which has one positioning hole.

[0018] Compared with related technologies, this application has the following technical advantages:

[0019] The positioning fixture for replacing aircraft condenser cores provided in this application reduces reliance on manual measurement and adjustment, and through reasonable structural design, makes the positioning process faster and more accurate.

[0020] 1. High-precision positioning: Through the coordinated action of the main positioning seat, longitudinal positioning mechanism and transverse positioning mechanism, the core is accurately positioned with dimensional deviation controlled within ±0.2mm, meeting the high-precision requirements of aviation maintenance.

[0021] 2. Modular design and easy adjustment: Tooling components, such as adjusting pads and adjusting screws, can be flexibly adjusted to adapt to different models of condenser cores; the combination of cross roller guides and fuma wheels enables smooth movement and positioning locking of the tooling, reducing the movement time to less than 5 minutes.

[0022] 3. High-efficiency welding assistance: Interface docking components (such as hot air inlet docking components and cold air outlet docking components) are precisely aligned with the interfaces through positioning sleeves (large round positioning sleeves and small round positioning sleeves), and the pipes are fixed with the bend pressure plate and bend top rod, which improves welding efficiency by more than 50% and reduces rework rate.

[0023] 4. High structural reliability: The main components are made of 45 steel or stainless steel. Key parts (such as positioning shafts and locking screws) are blackened or heat treated with HRC27-32, which has strong wear resistance and extends the service life to more than 5 years.

[0024] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This invention provides a schematic diagram of the structure of an aircraft condenser core replacement positioning fixture according to one embodiment of the present application.

[0027] Figure 2 A schematic diagram of the structure of the base plate in one embodiment of this application is shown;

[0028] Figure 3 A schematic diagram of the structure of the first longitudinal lug positioning beam in one embodiment of this application is shown;

[0029] Figure 4 A schematic diagram of the structure of the second longitudinal lug positioning beam in one embodiment of this application is shown;

[0030] Figure 5 A schematic diagram of the main positioning seat in one embodiment of this application is shown;

[0031] Figure 6 A schematic diagram of the longitudinal lug positioning seat in one embodiment of this application is shown;

[0032] Figure 7 This illustration shows one of the structural schematic diagrams of a transverse lug slide seat according to one embodiment of this application;

[0033] Figure 8This is a second schematic diagram of the structure of a transverse lug slide seat in one embodiment of this application;

[0034] Figure 9 A schematic diagram of the structure of the transverse lug positioning shaft in one embodiment of this application is shown;

[0035] Figure 10 A schematic diagram of the structure of the adjusting screw in one embodiment of this application is shown;

[0036] Figure 11 A schematic diagram of the structure of the large circular positioning sleeve in one embodiment of this application is shown;

[0037] Figure 12 A schematic diagram of the structure of the small circular positioning sleeve in one embodiment of this application is shown;

[0038] Figure 13 A schematic diagram of the structure of the adjustment pad in one embodiment of this application is shown;

[0039] Figure 14 It shows Figure 13 A sectional view;

[0040] Figure 15 This invention provides a schematic diagram of the main positioning support in one embodiment of the present application.

[0041] Figure 16 This is a second schematic diagram of the main positioning support in one embodiment of the present application;

[0042] Figure 17 A schematic diagram of the lug locking screw in one embodiment of this application is shown;

[0043] Figure 18 A schematic diagram of the structure of a bend pressure plate in one embodiment of this application is shown;

[0044] Figure 19 A schematic diagram of the aircraft condenser core replacement positioning fixture is shown in another embodiment of this application.

[0045] in, Figures 1 to 19 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0046] 100 Base plate, 102 Cross roller guide rail, 104 First longitudinal lug positioning beam, 106 Second longitudinal lug positioning beam, 110 Main positioning seat, 112 Longitudinal lug positioning seat, 114 Lateral lug sliding seat, 116 Lateral lug positioning shaft, 120 Adjusting screw, 122 Large round positioning sleeve, 124 Small round positioning sleeve, 126 Adjusting pad, 128 Main positioning support seat, 132 Cross beam locking nut, 134 Lug locking screw, 136 Bend plate, 138 Main positioning shaft, 140 Hot air inlet docking assembly, 142 Hot air outlet docking assembly, 146 Cold air inlet docking assembly, 148 Cold air outlet docking assembly, 150 Core bottom support assembly, 152 Top lug connecting assembly, 154 Side lug connecting assembly. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0049] The following reference Figures 1 to 19 This application describes a positioning fixture for replacing an aircraft condenser core according to some embodiments.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, this application proposes a positioning fixture for replacing an aircraft condenser core, comprising: a base plate 100; a main positioning seat 110 disposed on the base plate 100; a lug positioning assembly disposed on the base plate 100, including a longitudinal positioning mechanism and a lateral positioning mechanism; the longitudinal positioning mechanism is connected to the main positioning seat 110 by a longitudinal lug positioning beam through a positioning shaft, and cooperates with multiple longitudinal lug positioning seats 112 to form longitudinal positioning; the lateral positioning mechanism includes a lateral lug sliding seat 114, a lateral lug positioning shaft 116, and a lateral lug top rod; an interface docking assembly, including a hot air inlet docking assembly, an air outlet docking assembly, a cold air inlet docking assembly, and a cold air outlet docking assembly; and a positioning sleeve disposed on the interface docking assembly, the positioning sleeve being used to engage with the corresponding interface of the core.

[0051] The aircraft condenser core replacement positioning fixture provided in this application includes a base plate 100, a main positioning seat 110, a lug positioning assembly, an interface docking assembly, and a positioning sleeve. A dedicated lug positioning assembly is provided, comprising a longitudinal positioning mechanism and a lateral positioning mechanism. The longitudinal positioning mechanism engages with the main positioning seat 110 and multiple longitudinal lug positioning seats 112 via a longitudinal lug positioning beam and a positioning shaft. The lateral positioning mechanism consists of a lateral lug sliding seat 114, a lateral lug positioning shaft 116, and a lateral lug top rod, enabling precise longitudinal and lateral positioning of the condenser core's lug assembly, ensuring accurate core positioning during replacement.

[0052] The longitudinal lug positioning beam includes a first longitudinal lug positioning beam 104 and a second longitudinal lug positioning beam 106. The aircraft condenser core replacement positioning fixture also includes a main positioning shaft 138, which is used to connect the main positioning seat 110 and the first longitudinal lug positioning beam 104.

[0053] The transverse lug top rod and sliding seat design in the lug positioning assembly can firmly clamp the core body, preventing it from shifting or shaking during installation. The matching design of the interface docking assembly (including the hot air inlet, air outlet, cold air inlet, and cold air outlet docking assembly) and the positioning sleeve makes the docking of the core body interface more convenient and reduces manual adjustment time.

[0054] Specifically, such as Figure 19 As shown, the interface docking components include a hot air inlet docking component 140, a hot air outlet docking component 142, a cold air inlet docking component 146, and a cold air outlet docking component 148. The aircraft condenser core replacement positioning fixture also includes a core bottom support component 150, a top lug connection component 152, and a side lug connection component 154.

[0055] The modular design of the tooling (such as the cooperation between the longitudinal lug positioning beam and multiple positioning seats) allows for rapid positioning and fixing of the core, significantly shortening replacement time and improving maintenance efficiency. The socket design between the positioning sleeve and the core interface can be adapted to different models of condenser cores, enhancing the applicability and flexibility of the tooling.

[0056] The positioning fixture for replacing aircraft condenser cores provided in this application reduces reliance on manual measurement and adjustment, and through reasonable structural design, makes the positioning process faster and more accurate.

[0057] In some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: a bent tube base disposed on the base plate 100; a guide rail disposed on the bent tube base, and a main positioning seat 110 slidably disposed on the guide rail.

[0058] In this embodiment, the aircraft condenser core replacement positioning fixture also includes a bent tube base and a guide rail. The guide rail provides precise guidance, and the main positioning seat 110 slides stably, allowing for precise adjustment of its position as needed. This adapts to condenser cores of different specifications, reduces positioning deviations, avoids problems such as inaccurate welding positions and poor interface sealing, and ensures replacement quality.

[0059] The bent tube base provides stable support for the guide rail and main positioning seat 110, resulting in a compact and rational tooling layout. Operators have ample space to adjust the main positioning seat 110 without cumbersome disassembly, saving time and effort and improving operational efficiency. The adjustable sliding main positioning seat 110 allows this tooling to adapt to various aircraft models and different maintenance scenarios for condenser core replacement needs, eliminating the need for custom-made fixtures for specific situations, reducing maintenance costs and improving economic efficiency.

[0060] like Figure 1 , Figure 10 , Figure 13 and Figure 14 As shown in some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: an adjusting pad 126 and an adjusting screw 120, which are disposed between the main positioning seat 110 and the base plate 100 for adjusting the positioning height.

[0061] In this embodiment, the aircraft condenser core replacement positioning fixture also includes adjusting shims 126 and adjusting screws 120. The installation height of condenser cores of different models or batches may vary. By increasing or decreasing the number of adjusting shims 126 or rotating the adjusting screws 120, the height of the main positioning seat 110 can be precisely adjusted, ensuring the fixture accurately fits various cores, guaranteeing accurate positioning, avoiding installation deviations due to height mismatch, and ensuring welding quality and condenser performance.

[0062] The adjustment shim 126 and adjustment screw 120 make height adjustment simple and easy. Maintenance personnel can quickly complete the height adjustment without complicated tools or cumbersome operations, greatly reducing tooling preparation time and improving maintenance efficiency, especially suitable for emergency maintenance tasks.

[0063] like Figure 1 As shown, in some embodiments provided in this application, the guide rail is a cross roller guide rail 102.

[0064] In this embodiment, the crossed roller guide 102 possesses high rigidity, enabling it to withstand large loads and ensuring the stability of the main positioning seat 110 during sliding, reducing wobbling and deformation, and improving positioning accuracy. Simultaneously, the crossed roller guide 102 has a low coefficient of friction, allowing the main positioning seat 110 to slide smoothly, reducing operating effort and enabling rapid positioning, thus improving maintenance efficiency. Furthermore, the crossed roller guide 102 exhibits high motion accuracy and a long service life, reducing tooling maintenance costs, ensuring long-term stable use, and meeting the high precision and high reliability requirements of aircraft maintenance.

[0065] like Figure 1 As shown in some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: a bracket, disposed below the base plate 100, for supporting the base plate 100; a caster wheel, disposed at the bottom of the bracket; and a caster wheel connecting piece, disposed on the caster wheel, for locking the caster wheel.

[0066] In this embodiment, the aircraft condenser core replacement positioning fixture also includes a bracket, casters, and caster connecting pieces. The bracket is located below the base plate 100, providing a stable support structure for the entire fixture, ensuring that the fixture remains stable during positioning and welding processes, reducing shaking and displacement, thereby improving positioning accuracy and ensuring the quality of condenser core replacement.

[0067] The casters mounted on the bottom of the bracket give the tooling excellent mobility. Maintenance personnel can easily push the tooling to different work positions without spending a lot of manpower on transportation, which is especially suitable for large maintenance workshops and greatly improves work efficiency.

[0068] The caster connecting plate can lock the moving wheels. When the tooling reaches the designated position, it can be locked to prevent the tooling from moving accidentally during use. This avoids positioning deviations and safety accidents caused by tooling displacement, enhances the safety and stability of tooling use, and provides a strong guarantee for the efficient and accurate replacement of aircraft condenser cores.

[0069] In some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: a locking assembly disposed on the longitudinal positioning mechanism and the lateral positioning mechanism, used to lock the longitudinal positioning mechanism and the lateral positioning mechanism.

[0070] In this embodiment, the aircraft condenser core replacement positioning fixture also includes a locking assembly. After completing the longitudinal and lateral positioning adjustments, the locking assembly can quickly and firmly lock the positioning mechanism, effectively preventing displacement of the positioning mechanism due to external forces during subsequent operations, such as welding. This ensures that critical components such as the lug assembly are always in a precise positioning state, avoiding problems such as poor sealing of the condenser interface due to positioning deviations, and guaranteeing the quality of condenser core replacement.

[0071] In some embodiments provided in this application, the locking assembly includes a locking washer and a locking nut for fixing the longitudinal positioning mechanism and the lateral positioning mechanism.

[0072] In this embodiment, the locking assembly includes a locking washer and a locking nut. The locking washer increases the contact area, distributes pressure, and prevents damage to the positioning mechanism during locking, while also enhancing friction to prevent loosening. The locking nut provides a reliable and stable locking force, precisely fixing the positioning mechanism in place. Together, they effectively ensure that the positioning mechanism will not shift due to external forces or vibrations during operations such as welding, greatly improving positioning accuracy, ensuring the quality of condenser core replacement, reducing the hassle of repeated calibrations, and improving maintenance efficiency.

[0073] like Figure 1 As shown, in some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: a pipe bending pressure plate 136, which is disposed on the interface docking assembly for fixing the pipeline.

[0074] In this embodiment, the positioning fixture for replacing the aircraft condenser core also includes a pipe bending clamp 136. The pipe bending clamp 136 effectively constrains the piping at the interface assembly, preventing movement or displacement of the piping during positioning and welding operations. This ensures precise alignment between the piping and the interface, avoiding problems such as poor sealing and welding misalignment caused by pipe displacement, thus guaranteeing condenser performance. Simultaneously, its fixing function makes the operation more stable, reducing the time and effort required for repeated manual adjustments of the piping, improving maintenance efficiency, and making the entire condenser core replacement process more precise, efficient, and reliable.

[0075] In some embodiments provided in this application, the aircraft condenser core replacement positioning fixture further includes: a movable positioning seat, which is slidably disposed on the base plate 100 for adjusting the position of the condenser core.

[0076] In this embodiment, the aircraft condenser core replacement positioning fixture also includes a movable positioning seat. The movable positioning seat can be flexibly slidably adjusted on the base plate 100 according to the actual size of the condenser core and installation requirements. This allows the fixture to accurately adapt to condenser cores of different specifications, ensuring the core is in the optimal position during positioning, reducing problems such as inaccurate interface docking and poor welding quality caused by positioning deviations, and effectively improving the accuracy of condenser core replacement.

[0077] Maintenance personnel do not need to perform complex disassembly and reassembly of the tooling; they can quickly adjust the position simply by pushing the movable positioning seat, which greatly saves operation time and labor costs and improves maintenance efficiency.

[0078] like Figure 11 and Figure 12As shown, in some embodiments provided in this application, the positioning sleeve includes: a large circular positioning sleeve 122, which is annular and has multiple positioning holes spaced apart; and a small circular positioning sleeve 124, which has one positioning hole.

[0079] In this embodiment, the inner diameter tolerance of the positioning sleeve is strictly controlled within H7 (+0.02mm), which can greatly improve the tightness and accuracy of the connection, control the interface coaxiality error within the range of ≤0.03mm, effectively ensure the precise docking of the condenser core interface, avoid problems such as poor sealing and fluid leakage caused by coaxiality deviation, and improve the overall performance and reliability of the condenser.

[0080] The large circular positioning sleeve 122 has multiple positioning holes, enabling multi-directional positioning and fixation, enhancing the stability and robustness of the positioning. The small circular positioning sleeve 124 has one positioning hole, which, while meeting positioning requirements, results in a simpler structure and easier operation. Together, they can adapt to the positioning needs of different interface specifications while ensuring positioning accuracy and consistency, improving the efficiency and quality of aircraft condenser core replacement, reducing maintenance costs and risks, and providing reliable support for aircraft maintenance work.

[0081] like Figures 1 to 19 As shown in the specific embodiment, the overall structure of the tooling is as follows:

[0082] Basic support layer: base plate 100, made of 6061-T6 aluminum alloy, serves as the tooling base, with cross roller guides 102 machined on the surface to enable lateral movement; four casters and caster connecting pieces are installed at the bottom to facilitate tooling movement and fixation.

[0083] Core positioning layer:

[0084] Ear positioning assembly: The first longitudinal ear positioning beam 104 and the second longitudinal ear positioning beam 106 are connected to the main positioning seat 110 through the positioning shaft, and cooperate with the longitudinal ear positioning seat 112 to form longitudinal positioning; the transverse ear sliding seat 114, the transverse ear positioning shaft 116 and the transverse ear top rod form a transverse positioning structure, and the ear spacing is adjusted by adjusting the screw 120 to achieve three-dimensional positioning of the ear.

[0085] Interface docking components: The hot air inlet and outlet and the cold air inlet and outlet correspond to dedicated docking components (such as the hot air inlet docking component). They are precisely fitted with the core interface through the large circular positioning sleeve 122 and the small circular positioning sleeve 124. The inner diameter tolerance of the positioning sleeve is controlled within H7 (+0.02mm) to ensure that the coaxiality error of the interface is ≤0.03mm.

[0086] Auxiliary adjustment layer: Adjustment pad 126 and adjustment screw 120 are installed between main positioning support 128 and base plate 100 to finely adjust the positioning height; locking pad and crossbeam locking nut 132 are used to fix each positioning component to prevent displacement during welding.

[0087] The working principle is as follows:

[0088] 1. Positioning process:

[0089] Move the tooling under the condenser core and lock it in position using the fuma wheel;

[0090] Adjust the transverse lug sliding seat 114, the first longitudinal lug positioning beam 104 and the second longitudinal lug positioning beam 106 to align the lug positioning seat with the core lug, and fix it with the lug locking screw 134.

[0091] Adjust the height of the interface assembly using the adjusting pad 126 to ensure precise engagement between the hot / cold circuit interface and the positioning sleeve, and fix the pipeline using the bend pressure plate 136.

[0092] 2. Welding process:

[0093] After confirming that all positioning components are locked, perform full welding around the core interface;

[0094] After welding, the position of the core is finely adjusted by moving the positioning seat to ensure that the welding deformation is ≤0.1mm.

[0095] Technical parameters and standards

[0096] All unspecified chamfers are 0.5×45°, and the unspecified fillet radius is R0.2, to ensure the surface finish of the parts.

[0097] Key dimensional tolerances: length ±0.2mm, positioning shaft mating dimensions (e.g., 25f7, tolerance -0.02 / -0.04mm) to ensure assembly accuracy.

[0098] Material requirements: The base plate 100, pressure plate, etc. are made of 6061-T6 aluminum alloy, the positioning shaft, support seat, etc. are made of No. 45 steel, and some parts are blackened or heat treated with HRC27-32 to meet the strength requirements of aviation maintenance equipment.

[0099] Summary of technological innovations:

[0100] Multi-dimensional positioning structure: Through the collaboration of the main positioning base 110, the longitudinal positioning mechanism / lateral positioning mechanism and the interface docking component, the core body achieves dual-reference positioning of "ear-interface", breaking through the limitation of single reference positioning in the existing technology;

[0101] Modular and adjustable design: Components such as the adjustment pad 126 and sliding seat support dynamic adjustment of positioning parameters, adapting to different models of condenser cores and improving tooling versatility;

[0102] High-precision tolerance control: The dimensional tolerance of key components is controlled within ±0.2mm, and the positioning sleeve fit tolerance reaches H7 level, meeting the high-precision requirements of aerospace welding;

[0103] Movable and locking integration: The combination of the fuma wheel and the cross roller guide 102 enables the tooling to move, position and lock in an integrated manner, improving maintenance efficiency.

[0104] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0105] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0106] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An aircraft condenser core replacement positioning fixture, characterized by, include: Base plate; The main positioning seat is located on the base plate; The lug positioning assembly is disposed on the base plate and includes a longitudinal positioning mechanism and a transverse positioning mechanism. The longitudinal positioning mechanism is connected to the main positioning seat by a longitudinal lug positioning beam through a positioning shaft, and cooperates with multiple longitudinal lug positioning seats to form longitudinal positioning. The transverse positioning mechanism includes a transverse lug sliding seat, a transverse lug positioning shaft, and a transverse lug top rod. Interface docking components, including hot air inlet docking components, air outlet docking components, cold air inlet docking components and cold air outlet docking components; A positioning sleeve is disposed on the interface docking component, and the positioning sleeve is used to engage with the corresponding interface of the core.

2. The aircraft condenser core replacement positioning fixture of Claim 1, wherein, Also includes: A bend-pipe base is mounted on the base plate; A guide rail is mounted on the bent pipe base, and the main positioning seat is slidably mounted on the guide rail.

3. The aircraft condenser core replacement positioning fixture of Claim 2, wherein, Also includes: Adjusting shims and adjusting screws are disposed between the main positioning seat and the base plate to adjust the positioning height.

4. The aircraft condenser core replacement positioning fixture of Claim 2, wherein, The guide rail is a cross roller guide rail.

5. The aircraft condenser core replacement positioning fixture of Claim 1, wherein, Also includes: A bracket, located below the base plate, is used to support the base plate; Casters are provided at the bottom of the bracket; A caster connecting piece is provided on the movable wheel and is used to lock the movable wheel.

6. The aircraft condenser core replacement positioning fixture of any one of claims 1 to 5, wherein, Also includes: A locking component is provided on the longitudinal positioning mechanism and the transverse positioning mechanism for locking the longitudinal positioning mechanism and the transverse positioning mechanism.

7. The aircraft condenser core replacement positioning fixture of Claim 6, wherein, The locking assembly includes a locking washer and a locking nut for fixing the longitudinal positioning mechanism and the transverse positioning mechanism.

8. The aircraft condenser core replacement positioning fixture of any one of claims 1 to 5, wherein, Also includes: A pipe bending clamp is installed on the interface docking assembly to fix the pipe.

9. The aircraft condenser core replacement positioning fixture of any one of claims 1 to 5, wherein, Also includes: A movable positioning seat is slidably mounted on the base plate for adjusting the position of the condenser core.

10. The aircraft condenser core replacement positioning fixture of any one of claims 1 to 5, wherein, The positioning sleeve includes: A large circular positioning sleeve, wherein the large circular positioning sleeve is annular and has multiple positioning holes spaced apart on the large circular positioning sleeve; The small circular positioning sleeve has a positioning hole.

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