Special joint of tension and compression pad lever system and tension and compression pad lever system

Abstract

The utility model belongs to the technical field of airplane strength tests, and particularly relates to a special joint for a tension-compression pad lever system and the tension-compression pad lever system. The special joint comprises a connecting bolt (1), a tension-compression pad aspheric single-lug joint (2) and a pressure-dividing plate (3), two sides of the pressure-dividing plate (3) are respectively provided with a through hole, the connecting bolt (1) penetrates through the through holes and then is connected with a tension-compression pad (200), the middle of the pressure-dividing plate (3) is connected with the tension-compression pad aspheric single-lug joint (2), and the pressure-dividing plate (3) is connected with the tension-compression pad aspheric single-lug joint (2). And a through hole is formed in the other end of the non-spherical single-lug connector (2) of the tension-compression pad and is used for being connected with a lever (300). The distance between the tension and compression pad and the lever is shortened, the tension and compression pad lever system can be used in a narrow space, and the use range of the tension and compression pad lever system is widened.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft strength test, and particularly relates to a special joint for a tension and pressure pad lever system and the tension and pressure pad lever system. BACKGROUND

[0002] The tension and pressure pad-lever system loading technology is a structural strength ground verification test technology for simulating the application of the aerodynamic and inertial tension and pressure bidirectional load of an aircraft structure on the outer surface of the aircraft. Unlike the adhesive tape-lever system which is only applicable to unidirectional loading, the tension and pressure pad-lever system solves the problem of applying bidirectional load, greatly saving the loading space and test efficiency.

[0003] At present, in static force test, the connection mode of the tension and pressure pad-lever system is to adopt three different specifications of joints for connection. However, in some special cases, such as the leading edge flap and other components, due to the limited space, the distance between the inner and outer tension and pressure pads is very limited, and the design of the secondary lever at this position will lead to assembly difficulty. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the application provides a special joint for a tension and pressure pad lever system and the tension and pressure pad lever system, which is used to control the distance between the two rows of tension and pressure pads, so as to reduce the overall height of the loading system, and is used for the installation of the tension and pressure pad-lever loading system in the limited space.

[0005] The first aspect of the application provides a special joint for a tension and pressure pad lever system, mainly comprising a connecting bolt, a tension and pressure pad non-spherical head single ear joint and a pressure distribution plate, one through hole is arranged on each side of the pressure distribution plate, the connecting bolt passes through the through hole and is connected with the tension and pressure pad, the middle of the pressure distribution plate is connected with the tension and pressure pad non-spherical head single ear joint, the other end of the tension and pressure pad non-spherical head single ear joint is provided with a through hole for connecting with the lever.

[0006] Preferably, the tension and pressure pad non-spherical head single ear joint has an ear plate and a screw rod, the middle of the pressure distribution plate has a threaded hole, the pressure distribution plate is connected with the tension and pressure pad non-spherical head single ear joint through threads, and the through hole of the tension and pressure pad non-spherical head single ear joint is arranged at the end of the ear plate away from the screw rod.

[0007] Preferably, a reinforcing flange is arranged between the ear plate and the screw rod of the tension and pressure pad non-spherical head single ear joint.

[0008] Preferably, a bolt assembly is installed at the through hole of the end of the tension and pressure pad non-spherical head single ear joint to be connected with the lever bolt.

[0009] Preferably, a protruding trapezoidal plate is arranged on each side of the side of the pressure distribution plate away from the tension and pressure pad non-spherical head single ear joint.

[0010] The second aspect of the present application provides a tension and pressure pad lever system, comprising the special joint of the tension and pressure pad lever system as described above, the tension and pressure pad and the lever, the first end of the lever being connected with the tension and pressure pad non-spherical head single ear joint of the special joint, the special joint being connected with one tension and pressure pad through two connecting bolts respectively, and the second end of the lever being connected with another tension and pressure pad.

[0011] Preferably, the tension and pressure pad is connected with a leading edge flap, and the tension and pressure pad lever system is used for loading load for tension and pressure test of the leading edge flap.

[0012] Preferably, the second end of the lever is connected with the tension and pressure pad through a tension and pressure pad spherical head single ear joint.

[0013] The present application shortens the distance between the tension and pressure pad and the lever, can be used in narrow space, and expands the use range of the tension and pressure pad lever system. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of a preferred embodiment of the special joint of the tension and pressure pad lever system of the present application.

[0015] Figure 2 is a structural schematic view of the tension and pressure pad lever system of the present application.

[0016] In the figure, 1 is a connecting bolt, 2 is a tension and pressure pad non-spherical head single ear joint, 3 is a pressure distribution plate, 100 is a special joint, 200 is a tension and pressure pad, 300 is a lever, and 400 is a tension and pressure pad spherical head single ear joint. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described in more detail below in combination with the drawings in the embodiments of the present application. In the drawings, the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application. The embodiments of the present application will be described in detail below in combination with the drawings.

[0018] The first aspect of the present application provides a special joint of a tension and pressure pad lever system, as Figure 1As shown, mainly includes connecting bolt 1, tension and compression pad non-spherical head single ear joint 2 and pressure plate 3, the two sides of the pressure plate 3 are respectively provided with a through hole, the connecting bolt 1 passes through the through hole and is connected with the tension and compression pad 200, the middle of the pressure plate 3 is connected with the tension and compression pad non-spherical head single ear joint 2, the other end of the tension and compression pad non-spherical head single ear joint 2 is provided with a through hole for connecting with the lever 300.

[0019] Reference Figure 2 , the application connects two tension and compression pads 200 through the special joint 100, and then connects the third tension and compression pad 200 through the lever 300. Therefore, only one lever 300 can realize the connection of three tension and compression pads, avoiding the problem of high space requirement in the traditional method of first connecting two tension and compression pads through a primary lever and then connecting the primary lever with another tension and compression pad through a secondary lever. The structure greatly shortens the distance between the tension and compression pad and the lever, and the special joint is simple in design and strong in operability, easy to use and convenient to install, so that it can be used in narrow space and expand the use range of the tension and compression pad-lever system.

[0020] In some optional embodiments, the tension and compression pad non-spherical head single ear joint 2 has an ear plate and a screw rod, the middle of the pressure plate 3 has a threaded hole, the pressure plate 3 is connected with the tension and compression pad non-spherical head single ear joint 2 through the threaded hole, and the through hole of the tension and compression pad non-spherical head single ear joint 2 is arranged at the end of the ear plate away from the screw rod. When using the special joint 100 of the application, first, two connecting bolts 1 are used to fix the pressure plate 3 and the tension and compression pad 200 together, then the tension and compression pad non-spherical head single ear joint 2 is screwed into the hole in the middle of the pressure plate 3, and finally the lever end is connected with the tension and compression pad non-spherical head single ear joint 2 through a bolt.

[0021] In some optional embodiments, a reinforcing flange is arranged between the ear plate and the screw rod of the tension and compression pad non-spherical head single ear joint 2, which can improve the structural strength of the tension and compression pad non-spherical head single ear joint 2.

[0022] In some optional embodiments, a bolt assembly is installed at the through hole of the end of the tension and compression pad non-spherical head single ear joint 2 to be bolted with the lever 300.

[0023] In some optional embodiments, the pressure plate 3 is provided with a protruding trapezoidal plate on both sides of the side away from the tension and compression pad non-spherical head single ear joint 2. This embodiment can improve the structural strength of the pressure plate 3 and prevent the pressure plate 3 from breaking at the middle stress concentration position.

[0024] The second aspect of the present application provides a tension and compression pad lever system, comprising the special joint 100 of the tension and compression pad lever system as described above, the tension and compression pads 200, the lever 300, the first end of the lever 300 being connected to the tension and compression pad non-spherical head single ear joint 2 of the special joint 100, the special joint 100 being connected to one tension and compression pad 200 through two connecting bolts 1 respectively, and the second end of the lever 300 being connected to another tension and compression pad 200.

[0025] In some optional embodiments, the tension and compression pad 200 is connected to a leading edge flap, and the tension and compression pad lever system is used for load loading of the tension and compression test of the leading edge flap. The present application is especially suitable for the application of tension and compression load in the narrow space of the leading edge flap.

[0026] In some optional embodiments, the second end of the lever 300 is connected to the tension and compression pad 200 through the tension and compression pad spherical head single ear joint 400. This embodiment ensures that the lever 300 has a certain space for movement, avoiding the problem of inaccurate test load caused by the pre-tightening force introduced in the assembly process.

[0027] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A special purpose union joint for a tension and compression pad lever system, characterized by, It comprises connecting bolt (1), tension and compression pad non-spherical head single ear joint (2) and pressure distribution plate (3), one perforation is arranged on both sides of the pressure distribution plate (3) respectively, the connecting bolt (1) is connected with the tension and compression pad (200) after passing through the perforation, the middle of the pressure distribution plate (3) is connected with the tension and compression pad non-spherical head single ear joint (2), the other end of the tension and compression pad non-spherical head single ear joint (2) is provided with a through hole for connecting with the lever (300).

2. The special union joint for tension and compression pad lever system as claimed in claim 1, wherein, The tension and compression pad non-spherical head single ear joint (2) has an ear plate and a screw rod, the middle of the pressure distribution plate (3) has a threaded hole, the pressure distribution plate (3) is connected with the tension and compression pad non-spherical head single ear joint (2) through screw thread, and the through hole of the tension and compression pad non-spherical head single ear joint (2) is arranged at one end of the ear plate away from the screw rod.

3. The special union joint for tension and compression pad lever system as claimed in claim 2, wherein, The tension and compression pad non-spherical head single ear joint (2) is provided with a reinforcing flange between the ear plate and the screw rod.

4. The special union joint for tension and compression pad lever system as claimed in claim 2, wherein, The end through hole of the tension and compression pad non-spherical head single ear joint (2) is provided with a bolt assembly for bolt connection with the lever (300).

5. The specialized union joint for tension and compression pad-lever systems of claim 1, wherein, The pressure distribution plate (3) is provided with protruding trapezoidal plates on both sides of the side away from the tension and compression pad non-spherical head single ear joint (2).

6. A pull and push pad lever system characterized by, The special joint (100) comprising the tension and compression pad lever system of any one of claims 1-5, the tension and compression pad (200) and the lever (300), the first end of the lever (300) is connected with the tension and compression pad non-spherical head single ear joint (2) of the special joint (100), the special joint (100) is connected with one tension and compression pad (200) through two connecting bolts (1) respectively, and the second end of the lever (300) is connected with another tension and compression pad (200).

7. The tensioning pad lever system of claim 6, wherein, The tension and compression pad (200) is connected with a leading edge flap, and the tension and compression pad lever system is used for load loading of tension and compression test of the leading edge flap.

8. The tensioning pad lever system of claim 6, wherein, The second end of the lever (300) is connected with the middle of the tension and compression pad (200) through the tension and compression pad ball head single ear joint (400).

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