Replaceable aircraft nose landing gear ground comprehensive test bench

Abstract

The utility model relates to the technical field of test stands, and provides a replaceable airplane nose landing gear ground comprehensive test stand, which comprises a support frame body and a replaceable frame body, and a support assembly used for mounting a landing gear is connected to the replaceable frame body through a fastener. The supporting frame body is provided with a loading installation platform used for installing a loading power element. A plurality of upper connecting plates are arranged at the bottom of the replaceable frame body, lower connecting plates in one-to-one correspondence with the upper connecting plates are arranged at the top of the supporting frame body, and the upper connecting plates are detachably connected with the lower connecting plates. According to the utility model, different models or different structures of the same model can be adapted by integrally replacing the replaceable frame body, and the support frame body and some support assemblies can be reused, so that the manufacturing cost is greatly reduced, the production cycle of the test bed is shortened, and the test cycle is further conveniently shortened.

Description

Technical Field

[0001] This utility model relates to the field of test bench technology, and more specifically, to a replaceable aircraft nose landing gear ground integrated test bench. Background Technology

[0002] Tests such as the retraction and extension of the aircraft nose landing gear and loading verification cannot be separated from test bench testing. For different aircraft models or after structural optimization and upgrades, a large number of test bench tests are required for verification. At this time, the structure of the test bench also needs to change with the changes in aircraft model and structure, and the structure of the test bench also needs to be changed according to the requirements of test type, method and other factors.

[0003] Currently, most existing test benches are designed for the same generation of products on the same aircraft model. Therefore, a large number of test benches are needed to ensure the nose landing gear retraction and extension tests of various aircraft, increasing the manufacturing cost of the test benches. Furthermore, the design and production cycle of the test benches is long, leading to delays in later testing cycles. Therefore, how to solve these shortcomings is an urgent problem to be solved in this field. Utility Model Content

[0004] The purpose of this invention is to provide a replaceable aircraft nose landing gear ground integrated test bench to solve the above-mentioned defects of the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A replaceable aircraft nose landing gear ground integrated test bench includes a support frame and a replaceable frame. The support assembly for mounting the landing gear is connected to the replaceable frame by fasteners. The support frame is provided with a loading and mounting platform for mounting a loading power component. The bottom of the replaceable frame is provided with several upper connecting plates, and the top of the support frame is provided with lower connecting plates that correspond one-to-one with the upper connecting plates. The upper connecting plates and the lower connecting plates are detachably connected.

[0007] Optionally, the upper connecting plate and the lower connecting plate are connected by bolts.

[0008] Optionally, the bottom of the upper connecting plate is provided with a positioning post, the lower connecting plate is provided with a positioning hole that cooperates with the positioning post, and a steel shaft is connected between the positioning post and the support frame, the steel shaft being used to limit the relative vertical displacement of the two.

[0009] Optionally, the replaceable frame includes two long beams and two short beams, which together form a rectangular frame structure, and the upper connecting plate is located at each corner of the rectangular frame structure.

[0010] Optionally, the long beam and the short beam are a first structure and / or a second structure. The first structure includes two channel steels that are welded together. The second structure includes a main body and several reinforcing ribs. The main body includes an upper flange, a lower flange and a web. The web is located between the upper flange and the lower flange. The reinforcing ribs are symmetrically arranged on both sides of the web and are simultaneously welded and fixed to the upper flange, the web and the lower flange.

[0011] Optionally, the main body is an I-beam.

[0012] Optionally, the support frame includes a bottom frame, four columns and several connecting beams. The bottom frame has a rectangular frame structure, the four columns are located on the top of the bottom frame, the lower connecting plate is located on the top of the columns, and the connecting beams connect adjacent columns.

[0013] Optionally, each side of the column, the connecting beam, and the rectangular frame is a box-shaped structure formed by welding two channel steels together.

[0014] Optionally, the bottom of the base frame is provided with several foot mounting plates, and the foot mounting plates are provided with bolt holes for connection to the supporting site by bolts.

[0015] The technical solution of this utility model has at least the following advantages and beneficial effects: In this utility model, the support frame is divided into a lower support frame and an upper replaceable frame, which are detachably connected by a lower connecting plate and an upper connecting plate. At the same time, the loading and mounting platform for installing the loading power components is set on the support frame, and the support components for installing the landing gear are connected to the replaceable frame by fasteners. In this way, for different aircraft models or different structures of the same aircraft model, the entire replaceable frame can be replaced to adapt to the situation. The support frame and some support components can be reused, which greatly reduces the manufacturing cost, shortens the production cycle of the test bench, and thus facilitates the shortening of the test cycle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a replaceable aircraft nose landing gear ground integrated test bench provided in Example 1;

[0017] Figure 2 This is a structural schematic diagram of the replaceable frame in Example 1;

[0018] Figure 3 A schematic diagram of a structure using a second structure for a long beam;

[0019] Figure 4 This refers to the support frame in Example 1;

[0020] Figure 5 This is a structural schematic diagram of the replaceable frame in Example 2;

[0021] Figure 6 This refers to the support frame in Example 2;

[0022] Reference numerals: 100-Support frame, 101-Column, 1011-Second shaft hole, 102-Bottom frame, 103-Connecting beam, 104-Lower connecting plate, 1041-Positioning hole, 105-Anchor plate, 200-Replaceable frame, 201-Long beam, 2011-Upper wing plate, 2012-Lower wing plate, 2013-Web plate, 2014-Strengthening rib, 202-Short beam, 203-Upper connecting plate, 2031-Positioning column, 2032-First shaft hole, 300-Loading installation platform, 400-Support assembly. Detailed Implementation

[0023] Example 1

[0024] refer to Figure 1 A replaceable aircraft nose landing gear ground integrated test bench includes a support frame 100 and a replaceable frame 200. The replaceable frame 200 has several upper connecting plates 203 at its bottom, and the support frame 100 has lower connecting plates 104 corresponding to the upper connecting plates 203 at its top. The upper connecting plates 203 and lower connecting plates 104 are detachably connected. In this embodiment, the support bench is divided into the lower support frame 100 and the upper replaceable frame 200, and the replaceable frame 200 can be replaced as a whole.

[0025] Based on the above, and referring to Figure 4 In this embodiment, the support assembly 400 for mounting the landing gear is connected to the replaceable frame 200 using fasteners (such as screws and bolts). The support assembly 400 includes the landing gear mounting bracket, loading mounting bracket, door mounting plate, lock mounting plate, etc. Those skilled in the art should be able to set the corresponding support assembly 400 according to actual test requirements, so further details are omitted here. The support frame 100 is provided with a loading mounting platform 300 for mounting loading power components (such as hydraulic cylinders). In this way, for different aircraft models or different structures of the same aircraft model, the replaceable frame 200 can be replaced as a whole to adapt to different aircraft models. The support frame 100, the loading power components on the support frame 100, and some support assemblies 400 can be reused, which greatly reduces manufacturing costs, shortens the production cycle of the test bench, and thus facilitates a shorter test cycle.

[0026] Alternatively, in this embodiment, the upper connecting plate 203 and the lower connecting plate 104 are connected by bolts (not shown), that is, there are several bolt holes on the upper connecting plate 203 and the lower connecting plate 104, and the bolts are installed in the bolt holes and locked by nuts.

[0027] Refer again Figure 4In this embodiment, the support frame 100 includes a base frame 102, four columns 101, and several connecting beams 103. The base frame 102 has a rectangular frame structure. The four columns 101 are located at the top of the base frame 102, and a lower connecting plate 104 is located at the top of the columns 101. The connecting beams 103 connect adjacent columns 101 to ensure the supporting strength of the columns 101. Of course, connecting beams 103 can also be provided inside the base frame 102 to improve the structural strength of the base frame 102.

[0028] As an alternative, the columns 101, connecting beams 103, and each side of the rectangular frame are all box-shaped structures formed by interlocking and welding two channel steels, i.e., directly using structural steel, which facilitates a shorter manufacturing cycle. In practical applications, channel steel that meets the strength requirements is directly purchased, cut to a fixed length, and interlocked and welded to form the columns 101, connecting beams 103, and each side of the rectangular frame. The columns 101, connecting beams 103, and rectangular frame are then welded together to form the support frame 100. In other embodiments, the support frame 100 can of course also use other structural steels for support, or adopt other self-designed structures.

[0029] Furthermore, the bottom of the base frame 102 is provided with a plurality of foot mounting plates 105, and the foot mounting plates 105 are provided with bolt holes for bolt connection to the supporting site. In this embodiment, in order to ensure connection strength, there are eight foot mounting plates 105, four of which are located at the corners of the base frame 102 and the other four are located in the middle of the base frame 102.

[0030] refer to Figure 2 In this embodiment, the replaceable frame 200 includes two long beams 201 and two short beams 202, which together form a rectangular frame structure. Upper connecting plates 203 are located at each corner of the rectangular frame structure. In this embodiment, the long beam 201 and one of the short beams 202 constitute a second structure, while the other short beam 202 constitutes a first structure. The first structure includes two interlocking welded channel steels. (See reference...) Figure 3 The second structure includes a main body and several reinforcing ribs 2014. The main body includes an upper flange 2011, a lower flange 2012, and a web 2013. The web 2013 is located between the upper flange 2011 and the lower flange 2012. The reinforcing ribs 2014 are symmetrically arranged on both sides of the web 2013 and are simultaneously welded and fixed to the upper flange 2011, the web 2013, and the lower flange 2012. It is worth noting that the first structure facilitates rapid manufacturing, while the second structure ensures support strength. In other embodiments, both the long beam 201 and the short beam 202 can adopt the first structure; of course, both the long beam 201 and the short beam 202 can also adopt the second structure.

[0031] Furthermore, in this embodiment, the main body is an I-beam, which facilitates shortening the manufacturing cycle. The second structure can be formed simply by symmetrically welding the reinforcing ribs 2014 on both sides of the I-beam.

[0032] Example 2

[0033] refer to Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the detachable connection between the upper connecting plate 203 and the lower connecting plate 104 is different in this embodiment. Specifically, the bottom of the upper connecting plate 203 is provided with a positioning post 2031, and the lower connecting plate 104 is provided with a positioning hole 1041 that cooperates with the positioning post 2031. Based on the box-shaped structure formed by two channel steels interlocking and welding the column 101, the positioning post 2031 can also be a box-shaped structure formed by two channel steels interlocking and welding. It is easy to understand that the channel steel that constitutes the positioning post 2031 is smaller than the channel steel that constitutes the column 101. The positioning hole 1041 on the lower connecting plate 104 matches the size of the positioning post 2031, so as to realize the positioning of the support frame 100 and the replaceable frame 200. At the same time, the positioning post 2031 is inserted into the column 101.

[0034] Furthermore, a steel shaft connects the positioning column 2031 and the support frame 100. The steel shaft is used to limit the relative vertical displacement between the two. Based on this, it is easy to understand that the positioning column 2031 has a first shaft hole 2032 on its side, and the column 101 has a second shaft hole 1011 on its side corresponding to the first shaft hole 2032. The steel shaft is installed in the first shaft hole 2032 and the second shaft hole 1011. It is worth noting that the connection method of the upper connecting plate 203 and the lower connecting plate 104 according to this embodiment facilitates the reduction of the assembly and disassembly time of the support frame 100 and the replaceable frame 200.

[0035] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A replaceable aircraft nose landing gear ground integrated test bench, characterized in that, It includes a support frame and a replaceable frame. The support assembly for mounting the landing gear is connected to the replaceable frame by fasteners. The support frame is provided with a loading and mounting platform for mounting the loading power component. The bottom of the replaceable frame is provided with several upper connecting plates, and the top of the support frame is provided with lower connecting plates that correspond one-to-one with the upper connecting plates. The upper connecting plates and the lower connecting plates are detachably connected.

2. The replaceable aircraft nose landing gear ground integrated test bench according to claim 1, characterized in that, The upper connecting plate and the lower connecting plate are connected by bolts.

3. The replaceable aircraft nose landing gear ground integrated test bench according to claim 1, characterized in that, The bottom of the upper connecting plate is provided with a positioning post, and the lower connecting plate is provided with a positioning hole that cooperates with the positioning post. A steel shaft is connected between the positioning post and the support frame, and the steel shaft is used to limit the relative vertical displacement of the two.

4. The replaceable aircraft nose landing gear ground integrated test bench according to any one of claims 1-3, characterized in that, The replaceable frame includes two long beams and two short beams, which together form a rectangular frame structure. The upper connecting plate is located at each corner of the rectangular frame structure.

5. The replaceable aircraft nose landing gear ground integrated test bench according to claim 4, characterized in that, The long beam and the short beam constitute a first structure and / or a second structure. The first structure includes two channel steels that are welded together. The second structure includes a main body and several reinforcing ribs. The main body includes an upper flange, a lower flange, and a web. The web is located between the upper flange and the lower flange. The reinforcing ribs are symmetrically arranged on both sides of the web and are simultaneously welded and fixed to the upper flange, the web, and the lower flange.

6. The replaceable aircraft nose landing gear ground integrated test bench according to claim 5, characterized in that, The main body is an I-beam.

7. The replaceable aircraft nose landing gear ground integrated test bench according to any one of claims 1-3, characterized in that, The support frame includes a bottom frame, four columns and several connecting beams. The bottom frame has a rectangular frame structure, the four columns are located on the top of the bottom frame, the lower connecting plate is located on the top of the columns, and the connecting beams connect the adjacent columns.

8. The replaceable aircraft nose landing gear ground integrated test bench according to claim 7, characterized in that, The columns, the connecting beams, and each side of the rectangular frame are all box-shaped structures formed by welding two channel steels together.

9. The replaceable aircraft nose landing gear ground integrated test bench according to claim 7, characterized in that, The bottom of the base frame is provided with several foot mounting plates, and the foot mounting plates are provided with bolt holes for connection to the supporting site by bolts.

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