Test piece supporting system and experiment system

Abstract

The invention belongs to the technical field of heating tests, and particularly relates to a test piece supporting system and an experiment system, the test piece supporting system comprises an upper platform, a supporting column, an electric cylinder, a lower platform, an azimuth table and a support; the upper surface of the upper platform is used for fixedly installing a test piece, one position of the lower surface of the upper platform is hinged to the upper end of the supporting column, the other position is hinged to an actuating shaft of the electric cylinder, the fixed end of the electric cylinder is hinged to the lower platform, the lower end of the supporting column is fixed to the upper surface of the lower platform, and the electric cylinder actuates to incline the upper platform; the azimuth table is provided with a base and a rotating shaft, the base is fixedly installed on the support, the rotating shaft is connected with the lower platform, and the rotating shaft of the azimuth table rotates to enable the upper platform to rotate. When the test piece rotates around any direction, the test piece is controlled by only one motion branch chain, all the branch chains do not influence each other when the test piece rotates around the three-axis direction, and arbitrary combination of three-axis angles within a specified range can be achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heating test, and particularly relates to a test piece support system and an experimental system. BACKGROUND

[0002] Controlling the infrared radiation characteristics of a target is an important means to avoid the target from being discovered by infrared night vision equipment in a dark environment. To achieve infrared radiation control, the infrared radiation characteristic distribution of the target at different attitudes and different parts needs to be accurately measured first. The traditional method of obtaining the infrared characteristics of the target through flight test has problems such as complex test environment, limited site, high cost, and large attitude error. Therefore, a target support and heating method capable of accurately controlling the attitude and temperature field needs to be researched. SUMMARY

[0003] To solve the above problems, the application provides a test piece support system, which comprises:

[0004] The upper platform, the support column, the electric cylinder, the lower platform, the azimuth table and the support frame;

[0005] The upper surface of the upper platform is used for fixedly mounting a test piece, one position of the lower surface of the upper platform is hingedly connected with the upper end of the support column, and another position is hingedly connected with the actuating shaft of the electric cylinder, the fixed end of the electric cylinder is hingedly connected on the lower platform, the lower end of the support column is fixed on the upper surface of the lower platform, and the electric cylinder is actuated to tilt the upper platform.

[0006] The azimuth table has a base and a rotating shaft, the base is fixedly mounted on the support frame, and the rotating shaft is connected with the lower platform, and the rotating shaft of the azimuth table is rotated to rotate the upper platform.

[0007] Preferably, a motor is mounted on the base of the azimuth table, and the motor drives the rotating shaft to rotate through a gear system.

[0008] Preferably, the gear system adopts a planetary gear structure.

[0009] Preferably, the upper platform is hingedly connected with the support column through a spherical hinge, and the electric cylinder has two, and the two electric cylinders are respectively hingedly connected with the upper platform through a spherical hinge.

[0010] A thermal radiation experimental system has the test piece support system, and further comprises a heating device and a detection device.

[0011] The heating device comprises a cable and a heating patch, the test piece support system has a hole through which the cable passes, the cable passes through the test piece support system from the bottom of the test piece support system, is connected with the heating patch, and the heating patch is attached to the surface of the test piece to heat the corresponding position of the test piece.

[0012] The detection device is fixed on one side of the test piece and is used for detecting the thermal radiation of the test piece.

[0013] The test piece support system adjusts the posture of the test piece.

[0014] Preferably, a controller is further included, which is electrically connected with the electric cylinder and the azimuth table; the controller receives external instructions to control the extension and retraction amount and speed of the electric cylinder, and the rotation angle and speed of the azimuth table.

[0015] Preferably, the external instructions include instructions for simulating the real flight posture of an airplane.

[0016] The advantages of the present application include: the present application adopts the form of combination of an electric cylinder and a turntable, realizes that the test piece is controlled by only one motion branch chain when rotating around any direction, and the test piece is not affected by each branch chain when rotating around three axes, and the three-axis angles can be arbitrarily compounded within a specified range. And because of the form of combination of the electric cylinder and the turntable, although the system height is increased to a certain extent, the floor area is reduced as much as possible.

[0017] The present application solves the problem of coupling of motion degrees of freedom of a conventional parallel three-degree-of-freedom mechanism, so that the mechanism can decouple the pitch, roll and yaw when realizing three-degree-of-freedom rotation, and simultaneously realize the heating function of the test piece. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of a test piece support system according to a preferred embodiment of the present application.

[0019] Figure 2 is a schematic diagram of an azimuth table.

[0020] Figure 3 is a schematic diagram of an upper platform, a support column, an electric cylinder and a lower platform.

[0021] Figure 4 is another angle schematic diagram of an upper platform, a support column, an electric cylinder and a lower platform. DETAILED DESCRIPTION

[0022] In order to make the technical solutions of the present application and the advantages thereof clearer, the technical solutions of the present application will be further clearly and completely described below with reference to the drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present application, and are only used to explain the present application, but not to limit the present application. It should be noted that, for the purpose of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the usual design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0023] As shown in Figures 1-4 , it comprises:

[0024] The upper platform 1, the support column 3, the electric cylinder 4, the lower platform 6 and the azimuth table 7 and the support frame;

[0025] The upper surface of the upper platform 1 is used for fixing and installing the test piece, the lower surface of the upper platform 1 is hinged at one position to the upper end of the support column 3 and is hinged at another position to the actuating shaft of the electric cylinder 4, the fixed end of the electric cylinder 4 is hinged to the lower platform 6, the lower end of the support column 3 is fixed to the upper surface of the lower platform 6, and the electric cylinder 4 is actuated to make the upper platform 1 tilt; usually made of aluminum alloy material, and provided with reinforcing ribs inside to improve the rigidity while controlling the weight. The upper surface is provided with an array of uniformly distributed threaded holes or T-shaped grooves for fixing test pieces of different specifications by bolts or clamps. When the electric cylinder is preferably a servo electric cylinder, it will push the upper platform to rotate around the hinge point of the upper end of the support column, thereby realizing the tilting movement of the platform. This design constitutes a stable "right triangle" variable mechanism. The base of the azimuth table 7 is fixedly installed on the support frame 8. The rotating shaft of the azimuth table is usually a hollow shaft fixedly connected to the center of the lower surface of the lower platform 6. When the rotating shaft of the azimuth table rotates, it will drive the lower platform, the support column, the electric cylinder and the test piece on the upper platform to rotate as a whole around the vertical axis.

[0026] The azimuth table 7 has a base and a rotating shaft, the base is fixedly installed on the support frame, and the rotating shaft is connected to the lower platform 6. The rotating shaft of the azimuth table 7 rotates to rotate the upper platform 1.

[0027] Preferably, a motor is installed on the base of the azimuth table 7, which drives the rotating shaft to rotate through a gear system.

[0028] Preferably, the gear system adopts a planetary gear structure.

[0029] Preferably, the upper platform 1 is hinged to the support column 3 through a spherical hinge 2, and the electric cylinder 4 has two, and the two electric cylinders 4 are respectively hinged to the upper platform 1 through a spherical hinge 2.

[0030] A thermal radiation experiment system has the test piece support system, and further comprises a heating device and a detection device;

[0031] The heating device comprises a cable and a heating patch, the test piece support system has a hole through which the cable passes, the cable passes through the test piece support system from the bottom of the test piece support system and is connected to the heating patch, and the heating patch is attached to the surface of the test piece to heat the corresponding position of the test piece;

[0032] The detection device is fixed on one side of the test piece and is used for detecting the thermal radiation of the test piece;

[0033] The test piece support system adjusts the posture of the test piece.

[0034] Specifically, the test piece support system adjusts the tilt and rotation attitude of the test piece to change its orientation relative to the detection device and the thermal environment. The heating device heats a specific area of the test piece, and the detection device measures its thermal radiation characteristics. The system is suitable for studying the performance of spacecraft components, aviation brake materials, etc. in a thermal environment.

[0035] Preferably, a controller is further included, which is electrically connected with the electric cylinder 4 and the azimuth table 7; the controller receives external instructions to control the extension amount and extension speed of the electric cylinder 4, and the rotation angle and rotation speed of the azimuth table 7.

[0036] Preferably, the external instructions include instructions for simulating the actual flight attitude of an airplane. Embodiment details: the external instructions can be an attitude change curve calculated according to actual flight parameters of an airplane, such as climbing, diving, rolling, circling, etc.

[0037] The controller controls the coordinated movement of the electric cylinder and the azimuth table according to the curve, so that the test piece, such as a model of an airplane wing or a brake component, can reproduce the attitude change during flight in a laboratory environment, thereby studying the thermal distribution characteristics of the test piece under different flight attitudes and providing more accurate data support for thermal design of products.

[0038] The advantages of the present application include: the present application adopts the form of combination of an electric cylinder and a turntable, realizes that the test piece is controlled by only one motion branch chain when rotating around any direction, and the various branch chains do not affect each other when rotating around three axes, and the three-axis angles can be arbitrarily compounded within a specified range. And because of the form of combination of the electric cylinder and the turntable, although the system height is increased to a certain extent, the floor area is as small as possible.

[0039] The present application solves the problem of coupling of the motion degrees of freedom of the conventional parallel three-degree-of-freedom mechanism, so that the mechanism can decouple the pitch, roll and yaw when realizing three-degree-of-freedom rotation, and simultaneously realize the heating function of the test piece.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements easily thought of by those skilled in the art within the technical range disclosed in the present application 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 test specimen support system, characterized in that, include: Upper platform (1), support column (3), electric cylinder (4), lower platform (6), azimuth platform (7), and bracket; The upper surface of the upper platform (1) is used to fix the test piece. The lower surface of the upper platform (1) is hinged to the upper end of the support column (3) at one position and to the actuation shaft of the electric cylinder (4) at the other position. The fixed end of the electric cylinder (4) is hinged to the lower platform (6). The lower end of the support column (3) is fixed on the upper surface of the lower platform (6). The electric cylinder (4) actuates to tilt the upper platform (1). The azimuth platform (7) has a base and a rotating shaft. The base is fixedly installed on the bracket, and the rotating shaft is connected to the lower platform (6). The rotation of the rotating shaft of the azimuth platform (7) causes the upper platform (1) to rotate.

2. The test specimen support system as described in claim 1, characterized in that, A motor is installed on the base of the azimuth platform (7), and the motor drives the rotating shaft to rotate through a gear system.

3. The test specimen support system as described in claim 1, characterized in that, The gear system adopts a planetary gear structure.

4. The test specimen support system as described in claim 1, characterized in that, The upper platform (1) is hinged to the support column (3) by a ball joint (2). There are two electric cylinders (4), and each of the two electric cylinders (4) is hinged to the upper platform (1) by a ball joint (2).

5. A thermal radiation experimental system, characterized in that, The test specimen support system as described in any one of claims 1 to 4 further includes a heating device and a detection device; The heating device includes a cable and a heating patch. The test specimen support system has a hole through which the cable passes. The cable passes through the test specimen support system from the bottom and is connected to the heating patch. The heating patch is attached to the surface of the test specimen for heating the corresponding position of the test specimen. The detection device is fixed on one side of the test piece and is used to detect the thermal radiation of the test piece; The test specimen support system adjusts the posture of the test specimen.

6. The thermal radiation experimental system as described in claim 1, characterized in that it further includes a controller, which is electrically connected to the electric cylinder (4) and the orientation stage (7); the controller receives external commands to control the extension and retraction amount and speed of the electric cylinder (4), as well as the rotation angle and rotation speed of the orientation stage (7).

7. The thermal radiation experimental system as described in claim 1, characterized in that, It also includes a controller, and the external commands include those for simulating the aircraft's actual flight attitude.

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