Large-scale structure test multifunctional bearing platform and test method thereof

Abstract

The application discloses a large-scale structure test multifunctional bearing platform and a test method thereof, and belongs to the technical field of structure strength test. The platform comprises a bearing frame, an inspection / maintenance device and a power supply system integrated on the bearing frame. A plurality of mounting positions for mounting loading equipment are arranged on the bearing frame; the inspection / maintenance device is fixedly connected to the bearing frame and is used for providing a work channel to the mounting positions; the power supply system comprises a power system oil path distribution device arranged on the bearing frame and a connecting pipeline, and the power system oil path distribution device is provided with standardized interfaces used for connecting the loading equipment. The inspection and maintenance function, the integrated power supply system and the bearing frame are designed integrally, so that the problems of difficult equipment inspection and maintenance, scattered power supply and long test preparation period in traditional large-scale structure test are effectively solved, and the test efficiency and safety are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of structural strength testing technology, specifically to a multi-functional load-bearing platform for static and fatigue testing of large structures in aerospace, shipbuilding, and large civil engineering structures, and its testing method. Background Technology

[0002] With the development of new-generation aircraft, launch vehicles, and other large equipment, their structural dimensions and loads are increasing, placing higher demands on the scale, complexity, and efficiency of ground structural strength tests. Large-scale structural tests (such as full-size wing and section tests) are a critical step before full-scale aircraft testing. The test pieces are in complex conditions with numerous loading points, requiring frequent installation and replacement of loading equipment and measuring instruments, as well as inspection and maintenance of hydraulic lines during the testing process.

[0003] Currently, traditional test load-bearing platforms typically have a single function, primarily serving as reaction walls or load-bearing frames. The power source for the loading equipment (such as a hydraulic station) is often independently located on the ground, connected to the actuators at the high-altitude work point via temporarily laid long hoses. Inspection and maintenance rely on temporary scaffolding or lifting platforms. This approach has significant drawbacks: 1. Low installation efficiency: Each test requires the repeated laying of numerous hydraulic lines and inspection channels, resulting in a long preparation period. 2. Inconvenient operation and maintenance: High-altitude operations pose high safety risks; access to the loading point and pipelines is difficult; inspection and maintenance are time-consuming and labor-intensive. 3. Poor system stability: Long-distance temporary pipelines result in significant pressure loss, easily causing vibration and leakage, affecting loading accuracy and test safety. 4. Low functional integration: Load-bearing, power, and maintenance functions are separated, occupying a large space and exhibiting poor coordination.

[0004] In existing technologies, there are some dedicated loading devices designed for specific structural components (such as rocket bodies and aircraft wings), whose core function is to apply complex loads. However, these devices are usually customized for specific test objects, have limited functionality, and lack integrated and safe inspection and maintenance channels for test personnel. Their power supply systems are also often temporary or separate from the load-bearing structure. Other test systems with reconfigurable frames focus on modularity to adapt to different test specimens, but similarly do not incorporate inspection and maintenance functions and distributed power systems as core components of an integrated design.

[0005] In summary, existing technologies generally suffer from common problems such as limited platform functionality, inconvenient inspection and maintenance, dispersed power supply, and low system integration. Therefore, there is an urgent need for a comprehensive solution that can integrate and modularize core test support functions such as load-bearing, maintenance, and power supply to systematically improve the efficiency, safety, and economy of large-scale structural testing. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a multifunctional load-bearing platform for large-scale structural testing and its testing method. This invention solves the systemic problems of difficult equipment inspection / maintenance, unstable power supply, and long test preparation cycles in large-scale structural testing by modularizing and integrating the load-bearing frame, dedicated inspection / maintenance device, and platform-integrated power supply system. This results in a comprehensive testing platform with strong load-bearing capacity, convenient operation, and a high degree of integration.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a large-scale structural test multi-functional bearing platform, including a bearing frame, an inspection / maintenance device, and a power supply system integrated on the bearing frame; The supporting frame is provided with multiple mounting positions for installing loading equipment; The inspection / maintenance device is fixedly connected to the support frame to provide a working passage to the installation position; The power supply system includes a power system oil circuit distribution device and connecting pipelines arranged on the load-bearing frame; the power system oil circuit distribution device is provided with a standardized interface for connecting the loading equipment, and is used to provide hydraulic power to the loading equipment.

[0009] Furthermore, the supporting frame includes: The bottom supports the gantry frame, which is fixed to the load-bearing ground rail by anchor bolts; A square support column, the lower end of which is connected to the bottom support gantry frame; A load-bearing crossbeam is connected to the upper end of the square load-bearing column via a connecting single-ear base; the load-bearing crossbeam is provided with multiple mounting positions for installing the loading device; The load-bearing crossbeam is constructed by welding together an upper crossbeam panel, a lower crossbeam panel, a crossbeam stability support plate, and a crossbeam bending-bearing web.

[0010] Furthermore, the inspection / maintenance device includes: The inspection / maintenance platform is fixed to the load-bearing crossbeam by a combination of welding and bolting. An inspection / maintenance platform staircase, fixed to the load-bearing ground rail, leads to the inspection / maintenance platform.

[0011] Furthermore, the inspection / maintenance platform includes a platform triangular support, a platform vertical support steel pipe, a platform base plate, and a platform safety railing.

[0012] Furthermore, the power system oil circuit distribution device is welded and fixed to the load-bearing crossbeam via a fixed beam; the connecting pipeline includes a rigid oil circuit pipe and a flexible oil circuit pipe, the rigid oil circuit pipe connects multiple power system oil circuit distribution devices, and the flexible oil circuit pipe is used to connect at the parts of the rigid oil circuit pipe that need to be turned.

[0013] Furthermore, it also includes a power system pipeline fixing device, which is fixed to the square support column by a limiting bolt. The power system pipeline fixing device is provided with an oil pipe buffer pad for fixing and buffering the connecting pipeline.

[0014] Furthermore, the power system oil circuit distribution device includes an oil circuit inlet and outlet, a high-pressure oil outlet at the loading point, and a low-pressure oil inlet at the loading point. The high-pressure oil outlet at the loading point and / or the low-pressure oil inlet at the loading point are provided with quick-connect fittings, and the power system oil circuit distribution device is connected to an external loading device through the quick-connect fittings.

[0015] Furthermore, the power supply system also includes an accumulator connected to the power system oil circuit distribution device to reduce hydraulic system vibration.

[0016] Furthermore, it also includes a power system oil circuit pressurization device located on the ground, which is connected to the inlet and outlet of the power system oil circuit distribution device via a power oil circuit pipeline.

[0017] Secondly, the present invention provides a method for testing large structures, the method being implemented based on the aforementioned multifunctional load-bearing platform for testing large structures, the method comprising the following steps: Install the test loading equipment at the predetermined installation position on the load-bearing frame; The operator arrives at the predetermined installation location via a fixed inspection / maintenance device and connects the loading device to the standardized interface of the power system oil circuit distribution device; The power system oil circuit distribution device supplies hydraulic power to the loading device to conduct structural loading tests.

[0018] Beneficial effects: Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention integrates three major functional modules—load bearing, inspection and maintenance, and power supply—into a single design, realizing a "platform as a workstation." During test preparation, there is no need for temporary scaffolding or extensive hydraulic piping installation, which can shorten the test cycle by an average of over 20%.

[0019] 2. Fixed inspection / maintenance platforms and stairs provide operators with safe and convenient access to work at heights, reducing the average time for equipment installation, pipeline inspection, and routine maintenance by 30%. Platform safety railings further ensure personnel safety.

[0020] 3. The pre-integrated and fixedly arranged hydraulic piping system, along with piping fixing devices and accumulators, effectively absorbs hydraulic shocks, eliminates pressure pulsations, and significantly improves system pressure stability. Standardized quick-connect couplings and oil distribution devices ensure quick and reliable connection of loading equipment.

[0021] 4. The main structure of the platform is welded from high-strength materials. Through optimized design, its maximum vertical load-bearing capacity can reach 300 tons, which can meet the needs of most large-scale structural tests. Its modular design also gives it good versatility and scalability.

[0022] 5. Each subsystem adopts a separate design, resulting in low processing costs, clear assembly logic, and easy on-site installation and implementation, demonstrating good practicality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall composition of the large-scale structural testing multifunctional bearing platform according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the composition of the support frame in an embodiment of the present invention; Figure 3 This is a schematic diagram of the composition of the inspection / maintenance device in an embodiment of the present invention; Figure 4 This is a schematic diagram of the power supply system in an embodiment of the present invention; Figure 5 This is a detailed structural diagram of the load-bearing crossbeam in an embodiment of the present invention; Figure 6 This is a detailed structural diagram of the bottom-supporting gantry frame in an embodiment of the present invention; Figure 7 This is a detailed structural diagram of the square support column in an embodiment of the present invention; Figure 8 This is a detailed structural diagram of the single-ear base in an embodiment of the present invention; Figure 9 This is a detailed structural diagram of the inspection / maintenance platform on the load-bearing crossbeam in an embodiment of the present invention; Figure 10 This is a detailed structural diagram of the inspection / maintenance platform staircase in an embodiment of the present invention; Figure 11 This is a detailed structural diagram of the energy storage device in an embodiment of the present invention; Figure 12 This is a detailed structural diagram of the power system oil circuit pressurization device in an embodiment of the present invention; Figure 13 This is a detailed structural diagram of the power system connection pipeline in an embodiment of the present invention; Figure 14This is a detailed structural diagram of the power system oil circuit distribution device in an embodiment of the present invention; Figure 15 This is a detailed structural diagram of the power system pipeline fixing device in an embodiment of the present invention.

[0024] Explanation of the labels in the diagram: 1-Bearing frame, 2-Inspection / maintenance device, 3-Power supply system, 4-Bottom bearing gantry, 5-Square bearing column, 6-Bearing crossbeam, 7-Connecting single-ear base, 8-Inspection / maintenance platform, 9-Inspection / maintenance platform stairs, 10-Power system oil circuit pressurization device, 11-Power system pipeline fixing device, 12-Oil circuit rigid pipe, 13-Power system oil circuit distribution device, 14-Oil circuit flexible hose, 15-Crossbeam upper panel, 15-1-Crossbeam lifting hole, 16-Crossbeam lower panel, 17-Crossbeam stability support plate, 18-Crossbeam bending web, 19-1-First top load-bearing plate, 20-1-First gantry support plate, 21-1-First gantry base, 19-2-Second top load-bearing plate, 20-2-Second gantry support plate, 21 -2-Second gantry base, 22-Platform triangular support, 23-Platform vertical support steel pipe, 24-Platform base plate, 25-Platform safety railing, 26-Staircase base plate, 27-Staircase railing, 28-Staircase transverse support beam, 29-Staircase vertical support beam, 30-Staircase tread, 31-Storage bottle, 32-Storage device hydraulic oil inlet, 33-Distribution oil circuit handle, 34-Hydraulic storage bottle, 35-High-pressure oil inlet, 36-Low-pressure oil outlet, 37-Oil storage tank, 38-Limit bolt, 39-Fixed stiffening plate, 40-Oil pipe buffer pad, 41-Power oil circuit pipeline, 42-Quick connector, 43-Fixed beam, 44-Distribution oil circuit inlet and outlet, 45-Loading point high-pressure oil outlet, 46-Loading point low-pressure oil inlet, 47-Oil receiving tank, 48-Installation lifting ring. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0028] like Figures 1 to 15 As shown, the present invention provides a large-scale structural testing multifunctional bearing platform, which includes a bearing frame 1, an inspection / maintenance device 2, and a power supply system 3 integrated on the bearing frame 1, thereby forming an organic whole.

[0029] Regarding load-bearing frame 1: like Figures 1-2 , Figures 5-8 As shown, the load-bearing frame 1 is the core load-bearing structure of the platform, including the bottom load-bearing gantry 4, the square load-bearing column 5 and the load-bearing beam 6. Preferably, the load-bearing frame 1 is made of Q345 steel.

[0030] In practice, the bottom load-bearing gantry 4 is first placed at the designated position on the load-bearing ground rail using a gantry crane, and then fixed to the load-bearing gantry 4 with anchor bolts. The bottom load-bearing gantry 4 consists of a first top load-bearing plate 19-1, a first gantry support plate 20-1, and a first gantry base 21-1. The first gantry support plate 20-1 is fixedly mounted on the first gantry base 21-1, and the first top load-bearing plate 19-1 is mounted on the first gantry support plate 20-1.

[0031] Subsequently, the lower ends of the two square bearing columns 5 are connected to the bottom bearing gantry 4 using M36 high-strength bolts. The square bearing columns 5 are composed of a second top load-bearing plate 19-2, a second gantry support plate 20-2, and a second gantry base 21-2. The second gantry support plate 20-2 (square) is fixedly mounted on the second gantry base 21-2, and the second top load-bearing plate 19-2 is mounted on the second gantry support plate 20-2. Specifically, the second gantry base 21-2 is fixedly connected to the first top load-bearing plate 19-1 using bolts. The square bearing columns 5 are used to bear vertical loads.

[0032] Then, the connecting single-ear base 7 is fixed to the top of the square bearing column 5 with bolts, that is, fixed to the second top load-bearing plate 19-2. Finally, a heavy-duty crane is used to connect and install the bearing beam 6 to the connecting single-ear base 7, so that the bearing beam 6 is connected to the upper end of the square bearing column 5 through the connecting single-ear base 7. The bearing beam 6 is provided with multiple mounting positions 6-1 for installing loading equipment. The mounting positions 6-1 can be standardized bolt holes, T-slots, guide rails, or special clamp interfaces for fixing various test actuators, sensor brackets, and other loading and measuring equipment. The bearing beam 6 itself, such as... Figure 5 As shown, the beam is constructed by welding together an upper beam panel 15, a lower beam panel 16, a beam stability support plate 17, and a beam bending-bearing web 18. Exemplarily, the various sub-parts are connected using a bevel welding process to form a high-strength box girder structure, capable of effectively transferring the enormous test load applied by the loading equipment to the square bearing column 5 and the bottom bearing gantry 4. The beam bending-bearing web 18 is welded in the middle between the upper beam panel 15 and the lower beam panel 16, and multiple beam stability support plates 17 are welded on both sides. Simultaneously, lifting holes 15-1 are provided on the upper beam panel 15 near both ends of the panel to allow a crane to lift the bearing beam.

[0033] Regarding inspection / maintenance device 2: like Figure 1 , Figure 3 , Figure 9 , Figure 10 As shown, the inspection / maintenance device 2 is fixedly connected to the supporting frame 1, providing operators with a safe working passage to the installation position. Specifically, the inspection / maintenance device 2 includes an inspection / maintenance platform 8 and an inspection / maintenance platform staircase 9.

[0034] The inspection / maintenance platform 8 is fixedly connected to the bottom of the supporting beam 6 via a square tube at the bottom, using on-site threaded connections. Its sides are welded to the side stiffeners of the supporting beam 6, forming a hybrid connection method of welding and threading. This method ensures a stable connection between the inspection / maintenance platform 8 and the supporting beam 6, while also facilitating on-site installation and adjustment. The inspection / maintenance device 8 is mainly used by hydraulic and installation personnel for on-site installation, inspection work, and movement. Figure 9 and Figure 10As shown, the inspection / maintenance platform 8 includes a platform triangular support 22, a platform vertical support steel pipe 23, a platform base plate 24, and a platform safety railing 25. The platform triangular support 22 and the platform vertical support steel pipe 23 form the core load-bearing structure of the entire platform, bearing the load generated by personnel and materials on the platform and ensuring the basic safety of personnel and materials. The platform base plate 24 is fixedly installed between the platform triangular support 22 and the platform vertical support steel pipe 23, facilitating personnel movement between platforms. The platform safety railing 25 is fixedly installed on the platform vertical support steel pipe 23 and can be used to suspend safety ropes for on-site personnel working at height. This forms a safe passageway with a stable structure, providing operators with a safe and spacious working space at height.

[0035] The inspection / maintenance platform staircase 9 is fixed to the load-bearing ground rail by locking bolts and is used to access the inspection / maintenance platforms 8 on each floor. The inspection / maintenance platform staircase 9 consists of a staircase base plate 26, staircase railings 27, staircase transverse support beams 28, staircase vertical support beams 29, and staircase steps 30. The staircase transverse support beams 28 and staircase vertical support beams 29 are vertically fixedly connected to form a frame. The staircase steps on different floors are connected by the staircase base plate 26, which is fixed to the formed frame. The staircase railings 27 are set on both sides of the staircase steps 30. This staircase facilitates the movement of personnel on site for hydraulic and installation work and the handling of items, ensuring the safety and convenience of personnel going up and down.

[0036] Regarding power supply system 3: like Figure 1 , Figure 4 , Figures 11-15 As shown, the power supply system 3 is integrated into the load-bearing frame 1, and includes a power system hydraulic distribution device 13 and connecting pipelines arranged on the load-bearing frame 1. The power system hydraulic distribution device 13 is provided with a standardized interface for connecting loading equipment to provide hydraulic power to the external loading equipment. Specifically, the power system hydraulic distribution device 13 is welded and fixed to the load-bearing crossbeam 6 via a fixing beam 43, realizing the integration of power supply and load-bearing structure. During installation, this welding work is first completed on the ground.

[0037] The connecting pipeline includes a rigid oil pipe 12 (such as 304 stainless steel) and a flexible oil pipe 14. The rigid oil pipe 12 connects multiple power system oil distribution devices 13 in series. At the points where the rigid oil pipe 12 needs to turn (i.e., bends), the flexible oil pipe 14 is used to connect and accommodate structural deformation. This arrangement of a rigid main pipe and a flexible hose ensures the overall rigidity of the pipeline system, accommodates minor structural deformations, and facilitates installation.

[0038] To further stabilize the pipeline system, the power supply system 3 also includes a power system pipeline fixing device 11, which is fixed to the square support column 5 by limiting bolts 38. The power system pipeline fixing device 11 is equipped with an oil pipe buffer pad 40 for fixing and buffering the connecting pipelines. Specifically, the power system pipeline fixing device 11 includes a vertical plate and a horizontal plate, which are vertically fixedly connected. The vertical plate is fixed to the square support column 5 by limiting bolts 38, and the oil pipe buffer pad 40 is fixedly installed on the horizontal plate. Oil pipes near the square support column 5 are bolted to the oil pipe buffer pad 40. For example, the oil pipe buffer pad 40 can be made of high-pressure rubber. A fixing stiffening plate 39 is fixedly connected between the vertical plate and the horizontal plate to ensure the strength of the fixed power system pipeline fixing device 11. For example, the fixing stiffening plate 39 can be triangular. The oil pipe buffer pad 40 can effectively absorb pipeline vibrations caused by hydraulic oil pulsation and impact, greatly improving system stability.

[0039] The power system oil circuit distribution device 13 includes an oil circuit inlet / outlet 44, a high-pressure oil outlet 45 at the loading point, a low-pressure oil inlet 46 at the loading point, and a distribution device body. The oil circuit inlet / outlet 44, the high-pressure oil outlet 45 at the loading point, and the low-pressure oil inlet 46 at the loading point are all fixedly installed on the distribution device body. An oil receiving groove 47 is fixedly installed between the power system oil circuit distribution device 13 and the fixed beam 43. The top of the distribution device body is provided with a lifting ring 48 for easy hoisting.

[0040] The high-pressure oil outlet 45 and / or low-pressure oil inlet 46 of the loading point are equipped with quick-connect couplings 42, and the power system oil circuit distribution device 13 is connected to the external loading equipment through the quick-connect couplings 42. This quick-connect coupling 42 design makes the connection and disassembly of the loading equipment quick and easy, and can achieve a rapid docking capability covering up to 130 loading points, greatly shortening the test preparation time.

[0041] The oil distribution inlet / outlet 44 is also equipped with a quick-connect connector 42, which is connected to the power oil pipeline 41 by internal and external threads to form a power system connection pipeline. The power system connection pipeline is connected to the power system oil pipeline pressurization device 10 (i.e., hydraulic pump station) through the power oil pipeline 41 to ensure that the hydraulic oil of the hydraulic pump station can reach the power system oil distribution device 13.

[0042] The power supply system 3 also includes an accumulator connected to the power system oil circuit distribution device 13. Specifically, for example... Figure 11As shown, the accumulator includes an energy storage bottle 31 and an energy storage device hydraulic oil inlet 32 ​​connected to the bottom of the energy storage bottle 31. The energy storage device hydraulic oil inlet 32 ​​is connected via a pipeline to the downstream of the last branch oil outlet of the power system oil distribution device 13, for the purpose of mitigating hydraulic system vibration. The accumulator can store and release hydraulic energy, smoothing system pressure fluctuations, and plays a crucial buffering role, especially when the loading equipment suddenly starts or stops.

[0043] The ground-based power system hydraulic pressurization device 10 (hydraulic pump station) is connected to the integrated system on the platform via a main pipeline, providing power for the entire test. Specifically, the power system hydraulic pressurization device 10 is placed on the ground near the hydraulic inlet. The power system hydraulic pressurization device 10 controls the inflow and outflow of hydraulic oil through the high-pressure oil inlet 35 and low-pressure oil outlet 36 via the distributor handle 33. The hydraulic pressure storage bottle 34 serves as a pressure storage device for the hydraulic circuit, pressurizing the hydraulic circuit. The pressurized hydraulic oil enters the power system hydraulic distribution device 13 through the distributor inlet / outlet 44, and then enters the loading equipment through the high-pressure oil outlet 45 and low-pressure oil inlet 46 at the loading point, providing power for the test. The bottom of the power system hydraulic pressurization device 10 also includes an oil sump 37 for collecting leaked hydraulic oil.

[0044] Through the above-mentioned high-strength structural design and integrated optimization, the vertical load-bearing capacity of the entire platform is no less than 300 tons, which can meet the stringent requirements of most large-scale structural tests.

[0045] This invention also provides a structural testing method based on the above-mentioned platform, comprising the following steps: First, the test loading device is installed at the predetermined installation position of the load-bearing frame 1, namely the preset installation position 6-1 on the load-bearing beam 6.

[0046] Next, the operator safely reaches the predetermined installation position via the fixed inspection / maintenance device 2 (including the inspection / maintenance platform stairs 9 and the inspection / maintenance platform 8) and connects the loading equipment to the standardized interface (i.e., quick-connect connector 42) of the power system oil circuit distribution device 13.

[0047] Finally, hydraulic power is centrally supplied to the loading device through the power system oil circuit distribution device 13 to conduct a structural loading test. Throughout the test, operators can check the status of the loading device, sensors, and hydraulic lines, read data, and perform necessary maintenance at any time through the inspection / maintenance platform 8, achieving high efficiency, safety, and controllability of the test process.

[0048] The following is a specific example of the workflow of the above platform: The workflow of this platform in the overall static test of a certain type of aircraft wing is as follows: First, the load-bearing frame 1, which was pre-assembled in the workshop (such as welding the inspection / maintenance platform 8 and the power system oil circuit distribution device 13 to the load-bearing beam 6), is hoisted to the test hall, and its bottom load-bearing gantry 4 is fixed to the load-bearing floor with anchor bolts.

[0049] Secondly, the test personnel safely reached the various preset loading equipment installation points via the stable inspection / maintenance platform stairs 9 and inspection / maintenance platform 8. Using the standard interfaces on the platforms, dozens of hydraulic actuators were efficiently installed onto the load-bearing crossbeam 6.

[0050] Next, the hydraulic interface of each actuator is connected to the quick-connect connector 42 on the nearest power system oil circuit distribution device 13. The whole process is quick and standardized, avoiding the messy and lengthy on-site piping work in the traditional way.

[0051] Furthermore, during the test, technicians can access any actuator or pipe joint at any time via the inspection / maintenance platform 8 to check its status, read sensor readings, or troubleshoot faults. The accumulator and buffer pad device of the integrated hydraulic system ensure a smooth loading process.

[0052] Finally, when it is necessary to change the test conditions, simply disconnect the quick-connect connectors 42 of some actuators on the inspection / maintenance platform 8 and replace or adjust the loading equipment without modifying the main platform structure and main pipelines.

[0053] Actual testing has verified that, after adopting this platform, the total preparation time for static testing of a certain type of aircraft wing has been reduced from the traditional 15 days to 12 days, a reduction of 20%; and the daily equipment inspection time has been reduced from 4 hours per inspection to 2.8 hours, a reduction of 30%.

[0054] In summary, the embodiments of the present invention successfully integrate the three major functions of load bearing, maintenance, and power, with a maximum vertical load bearing capacity of 300 tons, a 20% reduction in test cycle, and an average 30% reduction in inspection time, significantly improving the efficiency, safety, and reliability of large-scale structural tests.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional load-bearing platform for large-scale structural testing, characterized in that, include: The load-bearing frame (1), the inspection / maintenance device (2), and the power supply system (3) integrated on the load-bearing frame (1); The supporting frame (1) is provided with multiple mounting positions (6-1) for installing loading equipment. The inspection / maintenance device (2) is fixedly connected to the support frame (1) to provide a working passage to the installation position; The power supply system (3) includes a power system oil circuit distribution device (13) and connecting pipelines arranged on the bearing frame (1); the power system oil circuit distribution device (13) is provided with a standardized interface for connecting the loading equipment, for providing hydraulic power to the loading equipment.

2. The large-scale structural testing multi-functional bearing platform according to claim 1, characterized in that, The supporting frame (1) includes: The bottom support gantry frame (4) is fixed to the load-bearing ground rail by anchor bolts; A square support column (5) is connected at its lower end to the bottom support gantry frame (4); The load-bearing beam (6) is connected to the upper end of the square load-bearing column (5) via a connecting single-ear base (7); the load-bearing beam (6) is provided with multiple mounting positions (6-1) for installing the loading device. The load-bearing crossbeam (6) is constructed by welding together the upper panel (15), the lower panel (16), the stability support plate (17), and the bending web (18).

3. The large-scale structural testing multi-functional bearing platform according to claim 2, characterized in that, The inspection / maintenance device (2) includes: Inspection / maintenance platform (8) is fixed to the load-bearing crossbeam (6) by a hybrid connection of welding and screwing; Inspection / maintenance platform stairs (9), which are fixed to the load-bearing ground rails, lead to the inspection / maintenance platform (8).

4. The large-scale structural testing multi-functional bearing platform according to claim 3, characterized in that, The inspection / maintenance platform (8) includes a platform triangular support (22), a platform vertical support steel pipe (23), a platform base plate (24), and a platform safety railing (25).

5. The large-scale structural testing multi-functional bearing platform according to claim 2, characterized in that, The power system oil circuit distribution device (13) is welded and fixed to the bearing beam (6) by a fixed beam (43); the connecting pipeline includes an oil circuit hard pipe (12) and an oil circuit flexible pipe (14). The oil circuit hard pipe (12) connects multiple power system oil circuit distribution devices (13), and the oil circuit flexible pipe (14) is used to connect the oil circuit hard pipe (12) at the part where the oil circuit hard pipe (12) needs to be turned.

6. The large-scale structural testing multi-functional bearing platform according to claim 5, characterized in that, It also includes a power system pipeline fixing device (11), which is fixed to the square bearing column (5) by a limiting bolt (38). The power system pipeline fixing device (11) is provided with an oil pipe buffer pad (40) for fixing and buffering the connecting pipeline.

7. The large-scale structural testing multi-functional bearing platform according to claim 5, characterized in that, The power system oil circuit distribution device (13) includes an oil circuit inlet / outlet (44), a high-pressure oil outlet (45) at the loading point, and a low-pressure oil inlet (46) at the loading point. The high-pressure oil outlet (45) and / or the low-pressure oil inlet (46) at the loading point are provided with quick-connect fittings (42). The power system oil circuit distribution device (13) is connected to an external loading device through the quick-connect fittings (42).

8. The large-scale structural testing multi-functional bearing platform according to any one of claims 1 to 7, characterized in that, The power supply system (3) also includes an accumulator connected to the power system oil circuit distribution device (13) for reducing hydraulic system vibration.

9. The large-scale structural testing multi-functional bearing platform according to any one of claims 1 to 7, characterized in that, It also includes a power system oil circuit pressurization device (10) located on the ground, which is connected to the oil circuit inlet and outlet (44) of the power system oil circuit distribution device (13) via a power oil circuit pipeline (41).

10. A method for testing large structures, characterized in that, The method is implemented based on the large-scale structural testing multi-functional load-bearing platform according to any one of claims 1-9, and the method includes the following steps: Install the test loading device at the predetermined installation position on the load-bearing frame; The operator arrives at the predetermined installation location via a fixed inspection / maintenance device and connects the loading device to the standardized interface of the power system oil circuit distribution device; The power system oil circuit distribution device supplies hydraulic power to the loading device to conduct structural loading tests.

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