A test apparatus and test method for applying loads

Abstract

This application discloses a test apparatus and method for applying loads, including a test platform and a loading assembly for applying loads to quick-release caps. The upper surface of the test platform is provided with several support members. The loading assembly includes a loading block, connecting members, a thrust lever, and a loading clamp. The loading block is used to apply the load, and both ends of the loading block are connected to the rod wall of the thrust lever via connecting members, with the loading block positioned between the two ends of the thrust lever. Both ends of the thrust lever are connected to the loading clamp via connecting members, and the loading clamp is used to clamp the quick-release cap. The test apparatus and method for applying loads proposed in this application, through the combined action of the support members and the loading assembly, solves the technical problem of not being able to verify whether the deformation amount of the quick-release cap is qualified, thus verifying whether the quick-release cap meets the usage requirements and ensuring that the deformation amount of the used quick-release cap meets the qualified standard.

Description

Technical Field

[0001] This application relates to the field of aircraft structural design, and in particular to a test apparatus and test method for loading loads. Background Technology

[0002] The quick-release cover is a locking structure used on aircraft. According to development requirements, a curved metal quick-release cover with specified dimensions needs to be developed. Currently, the deformation of the quick-release cover is determined by computer software simulation. However, there are differences between simulation analysis and real data, and it is impossible to verify whether the quick-release cover meets the usage requirements. This can easily lead to the quick-release cover used on aircraft having unqualified deformation, causing major accidents.

[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of this application is to provide a test device and test method for loading load, which aims to solve the technical problem that the deformation of quick-release caps cannot be verified.

[0005] To achieve the above objectives, this application provides a test apparatus for applying loads, including a test platform and a loading component for applying loads to quick-release caps;

[0006] The upper surface of the test platform is provided with several support components for fixing the quick-release cap;

[0007] The loading assembly includes a loading block, a connector, a thrust lever, and a loading clamp;

[0008] The loading block is used to apply a load. Both ends of the loading block are connected to the rod wall of the thrust lever through the connector, and the loading block is located between the two ends of the thrust lever.

[0009] Both ends of the thrust lever are connected to the loading clamp via the connector, and the loading clamp is used to clamp the quick-release cap.

[0010] Optionally, the connector is a spherical bearing.

[0011] Optionally, the support includes a support rod and a clamping member for holding the quick-release cap. The support is vertically disposed on the upper surface of the test platform. The support rod has a groove along its length, and the clamping member is slidably engaged in the groove.

[0012] Optionally, the upper surface of the test platform is provided with a track, and the lower end of the support rod is provided with a movable part that cooperates with the track.

[0013] Optionally, the test platform is provided with the track around its upper surface.

[0014] Optionally, the upper surface of the quick-release cap is provided with ribs, and the loading clamp is clamped on the ribs.

[0015] Optionally, it also includes a displacement gauge for recording the deformation of the quick-release cap.

[0016] Furthermore, to achieve the above objectives, this application also provides a method for applying a load, using a load-applying testing apparatus, the method comprising:

[0017] The quick-release cap is fixed to the upper surface of the test platform by several of the aforementioned support members;

[0018] The loading component is clamped onto the upper surface of the quick-release cap by the loading fixture;

[0019] The actuator applies a load to the loading block.

[0020] Optionally, the loading assembly, clamped to the upper surface of the quick-release cap by the loading fixture, includes:

[0021] The loading clamp is mounted on the ribs of the quick-release cap.

[0022] Optionally, after the actuator applies a load to the loading block, the test method further includes:

[0023] Record the deformation of the quick-release cap to obtain test data;

[0024] Simulation analysis was performed on the quick-release cap to obtain simulation data for the quick-release cap.

[0025] The test data is compared with the simulation data to verify whether the quick-release cap meets the requirements.

[0026] The beneficial effects that this application can achieve are:

[0027] When using this application, first fix the quick-release hatch cover on the upper surface of the test platform through several support members, and then apply a loading load to the quick-release hatch cover through the loading component. The loading component includes a loading block, a connecting member, a thrust lever, and a loading fixture. By applying a pressure load to the loading block, the loading block transfers the force to the thrust lever through the connecting member. Since the loading block is arranged between the two ends of the thrust lever, according to the lever principle, depending on the specific position of the loading block between the two ends of the thrust lever, the loading block is equivalent to the midpoint of the lever, and thus different magnitudes of loads can be transmitted to the two ends of the thrust lever. Loading fixtures are provided at the two ends of the thrust lever, and the loading fixtures are used to clamp the quick-release hatch cover, so that the load applied to the loading block can be transmitted to the loading fixtures and finally act on the quick-release hatch cover. This application fixes the quick-release hatch cover on the test platform through the support members, then applies a specified magnitude of load to the quick-release hatch cover through the loading component, and then the deformation amount of the quick-release hatch cover can be obtained by observing, using measuring instruments, etc. According to the deformation amount obtained by the test device for loading the load of the quick-release hatch cover with a curved surface of this application, compare the experimentally obtained deformation amount with the ideal deformation amount, and thus it can be judged whether the tested quick-release hatch cover meets the requirements. If it is within the ideal deformation amount range, it meets the requirements, and at this time the deformation amount of the quick-release hatch cover is qualified; otherwise, it is unqualified. At the same time, it can also be compared with the simulation analysis, so as to further improve the simulation analysis. By using the test device of this application, it is verified whether the quick-release hatch cover meets the usage requirements, ensuring that the deformation amount of the used quick-release hatch cover reaches the qualified standard, and solving the technical problem that it cannot be verified whether the deformation amount of the quick-release hatch cover is qualified. It ensures that the deformation amounts of the quick-release hatch covers used in aircraft all reach the qualified standard.

[0028] An experimental device and experimental method for loading a load proposed in an embodiment of this application, through the combined action of the support member and the loading component, solve the technical problem that it cannot be verified whether the deformation amount of the quick-release hatch cover is qualified, realize that it is verified whether the quick-release hatch cover meets the usage requirements, and ensure that the deformation amount of the used quick-release hatch cover reaches the qualified standard. Brief Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of an experimental device for loading a load provided by an embodiment of this application;

[0030] Figure 2 It is a schematic structural diagram of the front of the quick-release hatch cover provided by an embodiment of this application;

[0031] Figure 3 It is a schematic structural diagram of the back of the quick-release hatch cover provided by an embodiment of this application;

[0032] 1-Test platform, 2-Support rod, 3-Quick release cap, 4-Thrust lever, 5-Spherical bearing, 6-Loading fixture, 7-Loading block, 8-Reinforcing rib.

[0033] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0038] Reference Figure 1This application provides a test apparatus for applying loads, including a test platform 1 and a loading component for applying loads to a quick-release cap 3;

[0039] The upper surface of the test platform 1 is provided with several support members for fixing the quick-release cap 3;

[0040] The loading assembly includes a loading block 7, a connector, a thrust lever 4, and a loading clamp 6;

[0041] The loading block 7 is used to apply load. Both ends of the loading block 7 are connected to the rod wall of the thrust lever 4 through the connector, and the loading block 7 is located between the two ends of the thrust lever 4.

[0042] Both ends of the thrust lever 4 are connected to the loading clamp 6 via the connector, and the loading clamp 6 is used to clamp the quick-release cap 3.

[0043] When using this application, the test piece (quick-release cap 3) is first fixed to the upper surface of the test platform 1 by several support members. Then, a load is applied to the test piece (quick-release cap 3) by a loading assembly, which includes a loading block 7, a connecting member, a thrust lever 4, and a loading clamp 6. By applying a pressure load to the loading block 7, the loading block 7 transmits the force to the thrust lever 4 through the connecting member. Since the loading block 7 is positioned between the two ends of the thrust lever 4, according to the lever principle, the specific position of the loading block 7 between the two ends of the thrust lever 4 varies, and the loading block 7 is equivalent to the midpoint of the lever, thus... Loads of varying sizes can be transmitted to both ends of the thrust lever 4. Loading clamps 6 are provided at both ends of the thrust lever 4. These loading clamps 6 are used to clamp the test piece (quick-release cap 3). Thus, the load applied to the loading block 7 is transmitted to the loading clamps 6 and finally acts on the test piece (quick-release cap 3). By positioning the loading block 7 at a specific location on the thrust lever 4, the magnitude of the load transmitted to the loading clamps 6 can be changed, thereby adjusting the load applied to the quick-release cap 3 to ensure that the load applied to the quick-release cap 3 reaches a predetermined value. Furthermore, this application has multiple loading clamps 6, which can be located on the same plane or on a curved surface, allowing for the application of load forces on the curved quick-release cap 3. The lever structure also allows for the simultaneous application of different loads during the test. This application uses a support component to fix the quick-release cover 3 onto the test platform 1. Then, a load of a specified size is applied to the quick-release cover 3 using a loading assembly. The deformation of the quick-release cover 3 can then be determined by observation and measuring instruments. Based on the deformation obtained from the test device for loading the curved quick-release cover 3, the experimentally obtained deformation is compared with the ideal deformation to determine whether the tested quick-release cover 3 meets the requirements. If the deformation is within the ideal range, it meets the requirements and is considered qualified; otherwise, it is unqualified. Simultaneously, the deformation can be compared with simulation analysis to further improve the simulation analysis. By using the test device of this application, the usability of the quick-release cover 3 can be verified, ensuring that the deformation of the used quick-release cover 3 meets the qualified standard. This solves the technical problem of not being able to verify the qualification of the quick-release cover 3's deformation. It ensures that the deformation of the quick-release cover 3 used in aircraft meets the qualified standard.

[0044] The connecting component serves to connect the loading block 7 and the thrust lever 4, allowing the load of the loading block 7 to be transferred to the thrust lever 4. It also connects the thrust lever 4 and the loading fixture 6, allowing the load on the thrust lever 4 to be transferred to the loading fixture 6. This allows the load on the loading block 7 to be transferred to the loading fixture 6 and applied to the test piece, satisfying the requirement of simultaneous application of different loads during the test. The connecting component can be a connecting plate, a fixing component, a welded component, adhesive, a bearing, etc. In this embodiment, to ensure smooth load transfer, the connecting component is a spherical plain bearing 5. The spherical plain bearing 5 is existing technology. Spherical plain bearings are available in lubricated and self-lubricating types. A spherical plain bearing is a special type of sliding bearing. Its structure is simpler than that of a rolling bearing, mainly consisting of an outer ring with an inner spherical surface. It can withstand larger loads. Depending on the type and structure of the inner ring with its outer spherical surface, it can withstand radial loads, axial loads, or combined radial and axial loads. Because composite materials are inlaid on the outer spherical surface of the inner ring, the bearing can achieve self-lubrication during operation. Generally used for low-speed oscillating motion and low-speed rotation, it can also perform tilting motion within an angular range. It can still function normally when there is a large misalignment between the support shaft and the housing bore. The spherical plain bearing 5 can ensure stable and uniform load application through self-alignment.

[0045] The function of the support member is to support and fix the quick-release cap 3 to the upper surface of the test platform 1. It can be an existing support device, such as a support rod, support platform, or support plate. To facilitate the clamping and disassembly of the quick-release cap 3, and to easily adjust the height of the quick-release cap 3 on the test platform 1, thus enabling experiments at different heights of the quick-release cap 3 and collecting different experimental data, in this embodiment, the support member includes a support rod 2 and a clamping member for holding the quick-release cap 3. The support member is vertically arranged on the upper surface of the test platform 1. The support rod 2 has a groove along its length, and the clamping member slides within the groove. By providing a groove on the support rod 2 and sliding the clamping member within it, the height of the clamping member on the upper surface of the test platform 1 can be changed, allowing for variations in the height of the clamped quick-release cap 3. Furthermore, since multiple sets of support members are provided, the height of the clamping member within different support members can be adaptively adjusted to meet different experimental requirements, increasing experimental diversity and providing multiple sets of data.

[0046] The upper surface of the test platform 1 is provided with a track, and the lower end of the support rod 2 is provided with a movable component that cooperates with the track. By providing a track on the upper surface of the test platform 1, the movable component can move on the track, thereby adjusting the position of the support rod 2 on the upper surface of the test platform 1. This allows the support rod 2 to support quick-release caps 3 of different sizes, thus meeting the support requirements of quick-release caps 3 of different sizes.

[0047] The track can be set at any position on the upper surface of the test platform 1 to adjust the specific position of the support rod 2 so that the support rod 2 can match the size of the quick-release cap 3 being clamped. In this embodiment, in order to firmly clamp the quick-release cap 3 and ensure that the quick-release cap 3 is subjected to uniform force and the stability of the quick-release cap 3, the track is set around the upper surface of the test platform 1.

[0048] The loading clamp 6 can be held at any position on the quick-release cover 3, facilitating the application of loads to any location on the quick-release cover 3 and thus collecting corresponding deformation data. However, due to the structural characteristics of the quick-release cover 3, the ribs 8 of the quick-release cover 3 mainly serve to support the entire quick-release cover 3. The ribs 8 are the supporting components of the quick-release cover 3. Therefore, in this embodiment, the upper surface of the quick-release cover 3 is provided with ribs 8, and the loading clamp 6 is clamped onto the ribs 8. The load is applied to the ribs 8 of the quick-release cover 3 before the experiment is conducted to meet the experimental requirements.

[0049] The deformation of the quick-release cap 3 can be determined by observation or by instrument measurement. In this embodiment, in order to accurately obtain the deformation data, a displacement meter is also included to record the deformation of the quick-release cap 3.

[0050] This application also provides a method for applying a load, using a load-applying testing apparatus, the method comprising:

[0051] The quick-release cap 3 is fixed to the upper surface of the test platform 1 by several of the aforementioned support members;

[0052] The loading component is clamped onto the upper surface of the quick-release cap 3 by the loading clamp 6;

[0053] The actuator applies a load to the loading block 7.

[0054] The testing method of this application involves fixing the quick-release cover 3 to the upper surface of the test platform 1, then clamping the quick-release cover 3 to the upper surface of the test platform 1 using a loading fixture 6, and finally applying a load to the loading block 7 using an actuator. This applies a load to the quick-release cover 3, and the deformation of the quick-release cover 3 can be obtained by observation and using measuring instruments. The experimentally obtained deformation is compared with the ideal deformation to determine whether the tested quick-release cover 3 meets the requirements. If the deformation is within the ideal range, it meets the requirements and is considered qualified; otherwise, it is unqualified. Simultaneously, the results can be compared with simulation analysis to further improve the simulation analysis. By using the testing device of this application, the usability of the quick-release cover 3 can be verified, ensuring that the deformation of the used quick-release cover 3 meets the qualified standard. This solves the technical problem of not being able to verify whether the deformation of the quick-release cover 3 is qualified, ensuring that the deformation of the quick-release cover 3 used in aircraft meets the qualified standard.

[0055] The loading component is clamped onto the upper surface of the quick-release cap 3 by the loading fixture 6, including:

[0056] The loading clamp 6 is mounted on the rib 8 of the quick-release cover 3. The loading clamp 6 can be clamped at any position of the quick-release cover 3, which facilitates the application of load to any position of the quick-release cover 3, thereby collecting the corresponding deformation data. However, due to the structural characteristics of the quick-release cover 3, the rib 8 of the quick-release cover 3 mainly serves to support the entire quick-release cover 3. The rib 8 is a support member of the quick-release cover 3. Therefore, in the method of this embodiment, the load is applied to the rib 8 of the quick-release cover 3 before the experiment is conducted to meet the experimental requirements.

[0057] After the actuator applies a load to the loading block 7, the test method further includes:

[0058] Record the deformation of the quick-release cap 3 to obtain test data;

[0059] Simulation analysis was performed on the quick-release cap 3 to obtain simulation data for the quick-release cap 3.

[0060] The test data is compared with the simulation data to verify whether the quick-release cap 3 meets the requirements. In this test method, the test data is applied and recorded by the actuator, and the deformation is recorded by arranging displacement gauges. By comparing the test results with the simulation data, it is easy to correct the calculation of the simulation data, verify whether the quick-release cap 3 meets the usage requirements, and optimize the design of the quick-release cap 3.

[0061] In summary, the test apparatus and method for loading load of this application, when in use, firstly, the quick-release cap 3 is fixed to the upper surface of the test platform 1 by several support members. Then, the load is applied to the quick-release cap 3 by the loading assembly. By applying pressure load to the loading block 7, the loading block 7 transmits the force to the thrust lever 4 through the connecting member. Since the loading block 7 is located between the two ends of the thrust lever 4, according to the lever principle, the specific position of the loading block 7 between the two ends of the thrust lever 4 is different. The loading block 7 is equivalent to the midpoint of the lever, so different loads can be transmitted to the two ends of the thrust lever 4. The two ends of the thrust lever 4 are provided with loading clamps 6, which are used to clamp the quick-release cap 3. Thus, the load applied to the loading block 7 can be transmitted to the loading clamps 6, and finally act on the test piece quick-release cap 3. By setting the loading block 7 at a specific position on the thrust lever 4, this application can change the load size transmitted to the loading clamps 6, thereby adjusting the load size applied to the quick-release cap 3 to ensure that the load size applied to the quick-release cap 3 reaches a predetermined value. Meanwhile, this application has multiple loading clamps 6, which can be located on the same plane or on a curved surface, thereby enabling this application to apply load force to the curved quick-release cap 3. This application uses a support component to fix the quick-release cover 3 onto the test platform 1. Then, a load of a specified size is applied to the quick-release cover 3 using a loading assembly. The deformation of the quick-release cover 3 can then be determined by observation and measuring instruments. Based on the deformation obtained from the test device for loading the curved quick-release cover 3, the experimentally obtained deformation is compared with the ideal deformation to determine whether the tested quick-release cover 3 meets the requirements. If the deformation is within the ideal range, it meets the requirements and is considered qualified; otherwise, it is unqualified. Simultaneously, the deformation can be compared with simulation analysis to further improve the simulation analysis. By using the test device of this application, the usability of the quick-release cover 3 can be verified, ensuring that the deformation of the used quick-release cover 3 meets the qualified standard. This solves the technical problem of not being able to verify the qualification of the quick-release cover 3's deformation. It ensures that the deformation of the quick-release cover 3 used in aircraft meets the qualified standard.

[0062] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A test device for loading a load, characterized by, The test platform and a loading assembly for loading the quick-release cap are included; The upper surface of the test platform is provided with a plurality of support members for fixing the quick-release cap; the support member includes a support rod and a clamping member for clamping the quick-release cap, the support member is vertically arranged on the upper surface of the test platform, the support rod is provided with a sliding groove along the length direction of the support rod, and the clamping member is slidingly fitted in the sliding groove; the upper surface of the test platform is provided with a track, and the lower end of the support rod is provided with a moving member matched with the track; The loading assembly includes a loading block, a spherical bearing, a thrust lever and a loading clamp; The loading block is used for loading, and the two ends of the loading block are connected to the rod wall of the thrust lever through the spherical bearing, and the loading block is located between the two ends of the thrust lever; The two ends of the thrust lever are connected to the loading clamp through the spherical bearing, and the loading clamp is used for clamping the quick-release cap.

2. A load testing device as claimed in claim 1, wherein, The track is arranged around the upper surface of the test platform.

3. A load testing device as claimed in claim 1, wherein, The upper surface of the quick-release cap is provided with a rib, and the loading clamp is clamped on the rib.

4. A load testing device as claimed in claim 1, wherein, A displacement meter is further included for recording the deformation amount of the quick-release cap.

5. A test method for loading a load, characterized by, The method comprises: The quick-release cap is fixed on the upper surface of the test platform through a plurality of support members; The loading assembly is clamped on the upper surface of the quick-release cap through the loading clamp; The loading block is loaded by an actuator.

6. A method of testing a load according to claim 5, wherein, The loading assembly is clamped on the upper surface of the quick-release cap through the loading clamp, which comprises: The loading clamp is clamped on the rib of the quick-release cap.

7. A method of testing a load according to claim 5, wherein After the loading block is loaded by the actuator, the test method further comprises: Recording the deformation amount of the quick-release cap to obtain test data; Through simulation analysis on the quick-release cap, simulation data of the quick-release cap are obtained; The test data and the simulation data are compared to verify whether the quick-release cap meets the requirements.

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