Fixing device for control surface static test

Abstract

The utility model discloses a fixing device for a control surface static test, which comprises a bottom plate and two clamping plates symmetrically arranged on the bottom plate, the clamping plates comprise a first clamping plate and a second clamping plate, and the distance between the first clamping plate and the second clamping plate is equal to the thickness of a control surface mounting position. Limiting holes are further formed in the first clamping plate and the second clamping plate, and the positions of the limiting holes correspond to mounting holes in the mounting position of the control plane. For the static test of the control surface, the connection between the control surface and the cabin body is canceled, the control surface is directly mounted on the wall rail or the ground rail through the fixing device, and the designed fixing device is matched with the mounting position of the control surface, so that a large amount of time can be saved, the loading is more convenient, and the test result is more accurate. By adopting the device, the control surface is directly fixed with the ground, and the deformation strain and deflection of the control surface can be more accurately obtained.

Description

Technical Field

[0001] The utility model belongs to the field of aerospace technology, and in particular relates to a fixing device for a static force test of a rudder surface. Background Art

[0002] When conducting static tests on the control surfaces of various similar aircraft models, such as Figure 1 As shown, generally speaking, the static test of the rudder surface requires the corresponding aircraft cabin as a connecting piece tooling, but when the aircraft cabin is large or heavy, using the cabin as a connecting piece tooling is very cumbersome. Not only must the cabin be fixed, but also whether the rigid connection between the cabin and the rudder surface is stable must be considered, which affects the test results. In addition, the installation efficiency of the static test of the rudder surface is low and cumbersome.

[0003] The publication number is CN206318040U, which is a device for replacing a distribution mechanism in a control system test, and belongs to the technical field of aviation test device design. It includes: a mounting support and a rocker arm; the rocker arm is a triangular plate structure, and each vertex of the rocker arm is respectively provided with a first mounting hole, a second mounting hole and a third mounting hole; the top of the rocker arm is movably connected to the mounting support by a bolt passing through the third mounting hole; one bottom end of the rocker arm is connected to the control mechanism through the first mounting hole, and the other bottom end is connected to the rudder surface through the second mounting hole; the rocker arm can rotate around the mounting support, and the motion trajectory of the rocker arm is the same as the motion trajectory of the replacement mechanism. The utility model can replace the distribution mechanism in the control system test, meet the strength and rigidity requirements of the test, and avoid the influence of the hydraulic oil in the distribution mechanism on the test; the structure is simple, the processing cost is low, the test cost can be saved, and the requirements of different test conditions can be met. The mounting structure is also a tooling designed to meet the test requirements, but it cannot solve the problems raised by this scheme. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to provide a fixing device for static test of rudder surface.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing device for static test of rudder surface, comprising a base plate, two plywoods arranged on the base plate and symmetrically placed, the plywoods comprising a first plywood and a second plywood, the spacing between the first plywood and the second plywood is equal to the thickness of the rudder surface at the installation position, and limiting holes are also provided on the first plywood and the second plywood, and the positions of the limiting holes correspond to the installation holes at the installation position of the rudder surface.

[0006] Preferably, the shape of the bottom plate includes but is not limited to an ellipse and a rectangle, and the shape and thickness of the bottom plate are matched according to the site of the rudder surface static test.

[0007] Preferably, a through mounting hole is opened on the bottom plate, and anchor bolts are passed through the mounting hole to connect and fix with the ground rail or wall rail.

[0008] Preferably, four positioning holes are formed on the first clamping plate and the second clamping plate, and the positions of the four positioning holes correspond one-to-one to the positions of the mounting holes of the rudder surface mounting position.

[0009] Preferably, the mounting of the clamping plate and the rudder surface is performed by bolts passing through the limiting holes of the clamping plate and the mounting holes of the rudder surface in sequence and tightening them with nuts for fixing.

[0010] Preferably, the clamping plate and the base plate are integrally connected.

[0011] Preferably, the fixing device is made of 45 steel as a whole, and the bolts and nuts are made of stainless steel A2-70.

[0012] Compared with the prior art, the utility model has the following advantages: for the static test of the rudder surface, the utility model cancels the connection between the rudder surface and the cabin, and directly installs the rudder surface on the wall rail or the ground rail through the fixing device. The designed fixing device matches the installation position of the rudder surface, which can save a lot of time, make loading more convenient, and make the test results more accurate. By using this device to directly fix the rudder surface to the ground, the strain and deflection of the rudder surface deformation can be obtained more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the rudder structure of the utility model;

[0015] Figure 2 This is a front view of the static test fixture of the rudder surface of the utility model;

[0016] Figure 3 It is a side view of the static test fixture of the rudder surface of the utility model;

[0017] Figure 4 It is a top view of the static test fixture of the rudder surface in the utility model;

[0018] In the figure, 1-first clamping plate; 2-second clamping plate; 3-bottom plate. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0020] Reference Figure 2-Figure 4 A fixing device for a static test of a rudder surface comprises a circular base plate 3, two clamping plates arranged on the base plate 3 and symmetrically placed, the clamping plates comprising a first clamping plate 1 and a second clamping plate 2, both of which are rectangular, the spacing between the first clamping plate 1 and the second clamping plate 2 is equal to the thickness of the rudder surface at the installation position, and limiting holes are also provided on the first clamping plate 1 and the second clamping plate 2, and the positions of the limiting holes correspond to the installation holes at the installation position of the rudder surface.

[0021] The first clamping plate 1 and the second clamping plate 2 cooperate to clamp the rudder surface installation position. The distance between the first clamping plate 1 and the second clamping plate 2 is the thickness of the rudder surface installation position, which can be slightly larger; the first clamping plate 1 and the second clamping plate 2 are each provided with four holes, which are arranged in a rectangular shape. The four holes are used to create space for nuts and screws to fix the device and the rudder surface; the nuts and screws are connected. There are two mounting holes on the bottom plate 3. The two mounting holes are used to create space for the anchor bolts so that they can be fixed on the wall rail for easy installation.

[0022] The static test has high requirements on the strength of the device, otherwise the device will be damaged before the test piece during loading. Therefore, the whole device is made of 45 steel, and the bolts and nuts are made of stainless steel A2-70, with the same diameter as the rudder surface mounting hole.

[0023] The operator first places the static test device on the wall and fixes it with two anchor bolts. Then, the rudder installation position is embedded between two plywood and fixed with four bolts. Finally, the static test loading device and measuring device can be used for testing.

[0024] The size of the limiting holes on the first plywood 1 and the second plywood 2 of the device and the distance between the two plates are matched with the rudder surface to ensure that the static test can reduce the assembly gap as small as possible, and further reduce the assembly gap through preliminary tests, so that the deflection generated by the rudder surface test can be ignored. The size of the two holes in the bottom plate 3 ensures that the device itself can be fixed on the ground rail or wall rail, and can be appropriately increased or decreased according to needs. A simulated cabin can be used to rigidly connect the rudder surface and the cabin through a connecting device to achieve the purpose. However, compared with this fixed tooling, directly fixing the rudder surface to the ground can more accurately obtain the strain and deflection of the rudder surface deformation.

[0025] The above is a detailed introduction to a fixing device for static test of rudder surface provided by the utility model. The structure and working principle of the utility model are described in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A fixing device for static test of rudder surface, characterized in that: The invention comprises a bottom plate (3), and two clamping plates arranged on the bottom plate (3) and symmetrically disposed, wherein the clamping plates comprise a first clamping plate (1) and a second clamping plate (2), wherein the spacing between the first clamping plate (1) and the second clamping plate (2) is equal to the thickness at the rudder surface installation position, and limiting holes are also provided on the first clamping plate (1) and the second clamping plate (2), and the positions of the limiting holes correspond to the installation holes at the rudder surface installation position.

2. The fixing device for static test of rudder surface according to claim 1, characterized in that: The shape of the bottom plate (3) includes, but is not limited to, an ellipse and a rectangle. The shape and thickness of the bottom plate (3) are matched according to the site of the rudder surface static test.

3. The fixing device for static test of rudder surface according to claim 1, characterized in that: The bottom plate (3) is provided with a through mounting hole, through which anchor bolts are passed to connect and fix to the ground rail or the wall rail.

4. The fixing device for static test of rudder surface according to claim 1, characterized in that: Four positioning holes are provided on the first clamping plate (1) and the second clamping plate (2), and the positions of the four positioning holes correspond one to one with the positions of the mounting holes at the rudder surface mounting positions.

5. The fixing device for static test of rudder surface according to claim 1, characterized in that: The mounting of the clamping plate and the rudder surface is performed by bolts passing through the limiting holes of the clamping plate and the mounting holes of the rudder surface in sequence and tightening them with nuts for fixing.

6. The fixing device for static test of rudder surface according to claim 1, characterized in that: The clamping plate and the bottom plate (3) are integrally connected.

7. The fixing device for static test of rudder surface according to claim 1, characterized in that: The fixture is made entirely of 45-gauge steel, and the bolts and nuts are made of stainless steel A2-70.

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