A loading structure for testing the strength of a frame beam structure

Abstract

The present application provides a loading structure for testing the strength of a frame beam structure, including: a primary loading structure, including two clamping components, a primary lever, and a loading actuator; a secondary loading structure, including four clamping components, a primary lever, a loading actuator, and a secondary lever; in the primary loading structure and the secondary loading structure, the clamping components are clamped on the main beam; both ends of the primary lever are respectively connected to a clamping component; in the primary loading structure, the clamping components connected to both ends of the primary lever are clamped on the main beams parallel to each other on one side, and are distributed on one side of the frame node; the middle of the primary lever is connected to the loading actuator; in the secondary loading structure, the clamping components connected to both ends of one primary lever are clamped on the same main beam and are distributed on both sides of the frame node; the clamping components connected to both ends of the other primary lever are clamped on the other main beam on one side and are distributed on both sides of the frame node; both ends of the secondary lever are respectively connected to the middle parts of the two primary levers, and the secondary lever is connected to the loading actuator.

Description

Technical Field

[0001] This application belongs to the field of loading structures for frame beam structure strength tests, and particularly relates to a loading structure for frame beam structure strength tests. Background Art

[0002] There are numerous frame beam structures in aircraft structures, mainly including four main beams arranged in a rectangle, and struts supported between the four main beams. The intersection points of the strut ends on the main beams form frame nodes.

[0003] For strength tests of frame beam structures, loads in the Y and Z directions are mostly applied near the frame nodes, including the Y-direction positive load F Y(+) , the Y-direction negative load F Y(-) , the Z-direction positive load F Z(+) , the Z-direction negative load F Z(-) . Currently, it is mostly bonded with adhesive tapes at the position of the main beam near the frame node and connected to the loading mechanism for loading. As shown in Figure 1 , this technical solution has the following defects:

[0004] 1) The adhesive tape is flexible. For the same bonding position on the main beam, only tensile loads can be applied, and compressive loads cannot be applied. If both tensile and compressive loads need to be applied, additional adhesive tapes and their loading mechanisms need to be arranged, resulting in a large number of required adhesive tapes, prone to interference. And when an inward compressive load needs to be applied to the main beam, due to the interference of the inward main beam and its struts on the same side, it is difficult to arrange the adhesive tape, and the loading line needs to be deflected, affecting the accuracy of load application.

[0005] 2) The adhesive tape bonded to the main beam occupies a large area. If multiple-direction loads need to be applied near a frame node, multiple adhesive tapes need to be bonded to the main beam in sequence, and the loading positions of some direction loads will deviate far from the frame node, making it difficult to ensure the accuracy of load application. And in the case of a narrow space size of the frame beam structure, it is difficult to apply symmetric loads to the frame node.

[0006] 3) The adhesive tape is bonded to the main beam, and it is difficult to adjust the load application position conveniently and in real time according to the actual needs of the test.

[0007] In view of the existence of the above technical defects, this application is proposed.

[0008] It should be noted that the disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solution of the present invention, and it does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this application, the above background art should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0009] The objective of this application is to provide a loading structure for testing the strength of a frame beam structure, so as to overcome or mitigate at least one aspect of the known technical defects.

[0010] The technical solution of this application is as follows:

[0011] A loading structure for testing the strength of a frame beam structure, comprising:

[0012] A primary loading structure, including two clamping components, a primary lever, and a loading actuator cylinder;

[0013] A secondary loading structure, including four clamping components, a primary lever, a loading actuator cylinder, and a secondary lever;

[0014] In the primary loading structure and the secondary loading structure, the clamping components are clamped on the main beam; both ends of the primary lever are respectively connected to one clamping component;

[0015] In the primary loading structure, the clamping components connected to both ends of the primary lever are clamped on the main beams that are parallel to each other on one side, and are distributed on one side of the frame node; the middle of the primary lever is connected to the loading actuator cylinder;

[0016] In the secondary loading structure, the clamping components connected to both ends of one primary lever are clamped on the same main beam and are distributed on both sides of the frame node; the clamping components connected to both ends of the other primary lever are clamped on the other main beam on one side and are distributed on both sides of the frame node; both ends of the secondary lever are respectively connected to the middle parts of the two primary levers, and the connection of the secondary lever is connected to the loading actuator cylinder.

[0017] According to at least one embodiment of this application, in the above loading structure for testing the strength of a frame beam structure, in the primary loading structure and the secondary loading structure, both ends of the primary lever and the corresponding clamping components are connected by bolts, and the bolts cooperate with the primary lever through slotted holes;

[0018] In the secondary loading structure, both ends of the secondary lever and the corresponding primary levers are connected by bolts, and the bolts cooperate with the secondary lever through slotted holes.

[0019] According to at least one embodiment of this application, in the above loading structure for testing the strength of a frame beam structure, in the primary loading structure, the primary lever and the loading actuator cylinder are connected by a single and double ear structure cooperating with a pin shaft;

[0020] In the secondary loading structure, the secondary lever and the loading actuator cylinder are connected by a single and double ear structure cooperating with a pin shaft.

[0021] According to at least one embodiment of this application, in the above loading structure for testing the strength of a frame beam structure, in the primary loading structure and the secondary loading structure, the clamping components include:

[0022] Two clamping plates, arranged oppositely;

[0023] Two backing plates, each of which is correspondingly abutted against the outer side of a clamping plate;

[0024] Two connecting bolts for connecting the two clamping plates and the backing plates so that the two clamping plates cooperate to clamp the main beam.

[0025] According to at least one embodiment of the present application, in the above frame beam structure strength test loading structure, in the first-level loading structure and the second-level loading structure, a clamping groove is formed between the two clamping plates of the clamping assembly and is clamped on the main beam. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the existing frame beam structure strength test loading structure;

[0027] Figure 2 is a schematic diagram of the frame beam structure strength test loading structure provided by the embodiment of the present application;

[0028] Figure 3 is Figure 2 a partial assembly schematic diagram of

[0029] Figure 4 is an assembly schematic diagram of the clamping assembly provided by the embodiment of the present application;

[0030] Wherein:

[0031] 1 - clamping assembly; 2 - first-level lever; 3 - loading actuator; 4 - second-level lever; 5 - main beam; 6 - clamping plate; 7 - backing plate; 8 - connecting bolt; 9 - strut.

[0032] For better illustrating this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product. In addition, the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. Detailed Embodiments

[0033] To make the technical solutions of the present application and their advantages clearer, the technical solutions of the present application will be further described clearly and completely below with reference to the drawings. It can be understood that the specific embodiments described herein are only partial embodiments of the present application, which are only used to explain the present application and not to limit the present application. It should be noted that for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts can refer to the general design. Without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0034] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application pertains. The words indicating directions such as "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", etc. used in the description of this application are only used to indicate relative directions or positional relationships, rather than implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the object being described changes, its relative positional relationship may also change accordingly. Therefore, it should not be construed as a limitation to this application. The terms "first", "second", "third", and similar terms used in the description of this application are only for descriptive purposes to distinguish different components, and cannot be construed as indicating or implying relative importance. The similar words such as "a", "one", or "the" used in the description of this application should not be construed as an absolute limitation on the quantity, but should be understood as having at least one. The similar words such as "including" or "comprising" used in the description of this application are intended to mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects.

[0035] In addition, it should also be noted that, unless otherwise clearly specified and limited, the similar words such as "installed", "connected", and "coupled" used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can also be the communication inside two components. Those skilled in the art can understand its specific meaning in this application according to the specific situation.

[0036] The following further elaborates on this application in conjunction with the Figures 1 to 4 accompanying drawings.

[0037] A loading structure for testing the strength of a frame beam structure, comprising:

[0038] A primary loading structure, including two clamping assemblies 1, a primary lever 2, and a loading actuator 3;

[0039] A secondary loading structure, including four clamping assemblies 1, a primary lever 2, a loading actuator 3, and a secondary lever 4;

[0040] In the primary loading structure and the secondary loading structure, the clamping assembly 1 clamps on the main beam 5; both ends of the primary lever 2 are respectively connected to a clamping assembly 1;

[0041] In the primary loading structure, the clamping assemblies 1 connected to both ends of the primary lever 2 clamp on the main beam 5 that is parallel on one side, distributed on one side of the frame node; the middle of the primary lever 2 is connected to the loading actuator 3;

[0042] In the secondary loading structure, the clamping assemblies 1 connected to both ends of one first-class lever 2 are clamped on the same main beam 5, distributed on both sides of the frame node; the clamping assemblies 1 connected to both ends of the other first-class lever 2 are clamped on the other main beam 5 on one side, distributed on both sides of the frame node; both ends of the secondary lever 4 are respectively connected to the middle parts of the two first-class levers 2, and the secondary lever 4 is connected to the loading actuator 3.

[0043] For the loading structure for the frame beam structure strength test disclosed in the above embodiments, those skilled in the art can understand that its design uses the clamping assembly 1 to clamp the main beam 5, and the loading actuator 3 applies load through the first-class lever 2 and the secondary lever 4. There is a rigid connection between them, and a tensile load or a compressive load can be applied at the same clamping position of the main beam 5. The structure is simple and can effectively reduce the possibility of interference.

[0044] For the loading structure for the frame beam structure strength test disclosed in the above embodiments, those skilled in the art can understand that the clamping assembly 1 can be designed to have a smaller size, and the clamping position on the main beam 5 is close to the frame node to ensure the accuracy of load application. The first-class loading structure can be used to apply load on one side of the frame node, and the secondary loading structure can apply symmetric load to the frame node.

[0045] In some alternative embodiments, in the above loading structure for the frame beam structure strength test, in the first-class loading structure and the secondary loading structure, both ends of the first-class lever 2 and the corresponding clamping assembly 1 are connected by bolts, and the bolts cooperate with the first-class lever 2 through the strip-shaped holes to facilitate the adjustment of their relative positions;

[0046] In the secondary loading structure, both ends of the secondary lever 4 and the corresponding first-class lever 2 are connected by bolts, and the bolts cooperate with the secondary lever 4 through the strip-shaped holes to facilitate the adjustment of their relative positions.

[0047] In some alternative embodiments, in the above loading structure for the frame beam structure strength test, in the first-class loading structure, the first-class lever 2 and the loading actuator 3 are connected by a single / double ear structure cooperating with a pin shaft;

[0048] In the secondary loading structure, the secondary lever 4 and the loading actuator 3 are connected by a single / double ear structure cooperating with a pin shaft.

[0049] In some alternative embodiments, in the above loading structure for the frame beam structure strength test, in the first-class loading structure and the secondary loading structure, the clamping assembly 1 includes:

[0050] Two clamping plates 6, arranged oppositely;

[0051] Two backing plates 7, each backing plate 7 is correspondingly abutted against the outer side of one clamping plate 6;

[0052] Two connecting bolts 8 connect two clamping plates 6 and a backing plate 7, so that the two clamping plates 6 cooperate to clamp the main beam 5.

[0053] For the frame beam structure strength test loading structure disclosed in the above embodiment, those skilled in the art can understand that the designed clamping assembly 1 is a detachable structure connected by two connecting bolts 8, which is convenient for disassembly and assembly on the main beam 5, and can be adjusted conveniently and in real time according to the actual needs of the test.

[0054] In some alternative embodiments, in the above frame beam structure strength test loading structure, in the first-stage loading structure and the second-stage loading structure, a clamping groove is formed between the two clamping plates 6 of the clamping assembly 1, which is stuck on the main beam 5 to limit the relative position.

[0055] In a specific embodiment, it is necessary to apply a positive Z-direction load F Z(+) and a negative Z-direction load F Z(-) near the first frame node of the frame beam structure, apply a positive Y-direction load F Y(+) and a negative Y-direction load F Y(-) near the second frame node, and apply a positive Z-direction load F Z(+) and a negative Z-direction load F Z(-) , and apply a positive Z-direction load F Z(+) and a negative Z-direction load F Z(-) for symmetric loading, as Figure 2 shown.

[0056] Using the frame beam structure strength test loading structure provided by the embodiment of the present application, for applying a positive Z-direction load F Z(+) and a negative Z-direction load F Z(-) near the first frame node, one first-stage loading structure can be used, and its two clamping assemblies 1 are respectively clamped at positions near the first frame node on the upper two main beams 5 for loading;

[0057] For applying a positive Y-direction load F Y(+) and a negative Y-direction load F Y(-) near the second frame node, one first-stage loading structure can be used, and its two clamping assemblies 1 are respectively clamped at positions near the first frame node on the right two main beams 5 for loading;

[0058] For applying a positive Z-direction load F Z(+) and a negative Z-direction load F Z(-)For the symmetric load, a two-stage loading structure can be used. Two clamping components 1 on a first-class lever 2 clamp a main beam 5 below. The two clamping components 1 are distributed near both sides of the second frame node. Two clamping components 1 on another first-class lever 2 clamp another main beam 5 below. The two clamping components 1 are distributed near both sides of the second frame node to perform symmetric loading on the second frame node.

[0059] The various embodiments in the specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0060] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A loading structure for testing the strength of a frame beam structure, characterized in that, Comprising: A primary loading structure, including two clamping assemblies (1), a primary lever (2), and a loading actuator (3); A secondary loading structure, including four clamping assemblies (1), a primary lever (2), a loading actuator (3), and a secondary lever (4); In the primary loading structure and the secondary loading structure, the clamping assembly (1) clamps on the main beam (5); both ends of the primary lever (2) are respectively connected to a clamping assembly (1); In the primary loading structure, the clamping assemblies (1) connected to both ends of the primary lever (2) clamp on the main beam (5) that is parallel on one side and are distributed on one side of the frame node; the middle of the primary lever (2) is connected to the loading actuator (3); In the secondary loading structure, the clamping assemblies (1) connected to both ends of one primary lever (2) clamp on the same main beam (5) and are distributed on both sides of the frame node; the clamping assemblies (1) connected to both ends of the other primary lever (2) clamp on the other main beam (5) on one side and are distributed on both sides of the frame node; both ends of the secondary lever (4) are respectively connected to the middle parts of two primary levers (2), and the secondary lever (4) is connected to the loading actuator (3); In the primary loading structure and the secondary loading structure, the two ends of the primary lever (2) and the corresponding clamping assembly (1) are connected by bolts, and the bolts cooperate with the primary lever (2) through slotted holes; In the secondary loading structure, both ends of the secondary lever (4) and the corresponding primary lever (2) are connected by bolts, and the bolts cooperate with the secondary lever (4) through slotted holes; In the primary loading structure, the primary lever (2) and the loading actuator (3) are connected by a single / double ear structure and a pin shaft; In the secondary loading structure, the secondary lever (4) and the loading actuator (3) are connected by a single / double ear structure and a pin shaft.

2. The frame beam structure strength test loading structure according to claim 1, characterized in that In the primary loading structure and the secondary loading structure, the clamping assembly (1) includes: Two clamping plates (6), arranged oppositely; Two backing plates (7), each backing plate (7) is correspondingly abutted against the outer side of a clamping plate (6); Two connecting bolts (8), connecting the two clamping plates (6) and the backing plates (7) so that the two clamping plates (6) cooperate to clamp the main beam (5).

3. The frame beam structure strength test loading structure according to claim 2, characterized in that In the primary loading structure and the secondary loading structure, a clamping groove is formed between the two clamping plates (6) of the clamping assembly (1) and is clamped on the main beam (5).

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