A medium-sized launch vehicle launch platform loading test device and test method

Abstract

The application belongs to the technical field of rocket test device, and particularly relates to a medium-sized carrier rocket launching pad loading test device and a test method. The device comprises a test platform, a support structure, a loading structure and a test structure. The loading structure comprises a plurality of hydraulic jacks, an adapter ring and a stand. One end of the stand penetrates the launching pad and is fixedly connected with the foundation. The other end of the stand is fixedly connected with a cross beam. The adapter ring is sleeved on the outer side of the stand and is connected with the top of the plurality of rocket simulation legs. A plurality of hydraulic jacks are arranged on the surface of the adapter ring and are connected with the same pipeline. The experimental device provided by the application has the advantages of simple and reliable loading device, strong loading capacity, 1000-ton loading, high-precision loading of the plurality of hydraulic jacks connected with the same pipeline, small driving force value error of the hydraulic jacks, and measurement of the loading deformation.

Description

Technical Field

[0001] The present invention relates to the technical field of rocket test devices, and in particular to a medium-sized carrier rocket launch pad loading test device and a test method. Background Art

[0002] The launch pad is used to reliably support and fix the rocket body, cooperate to complete the vertical adjustment of the rocket, facilitate the installation and fixation of rocket-related accessories, and can smoothly discharge the gas flow.

[0003] The launch pad supports the rocket and has a load-bearing function. Static analysis is generally used to examine the load-bearing capacity of the launch pad. Static analysis can be used for the support arms, and loading tests can also be performed using a pressure testing machine. After the launch pad and support arms of a medium-sized carrier rocket are integrated, due to their large size, high loading loads, and high loading precision, relying solely on static analysis often results in a certain deviation between theoretical and actual values. Therefore, a medium-sized carrier rocket launch pad loading test device and test method with high loading loads and good load distribution is required. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology and provide a medium-sized carrier rocket launch platform loading test device and test method with large loading load and good load distribution to meet the needs of launch platform development.

[0005] To achieve the above-mentioned object, the present invention provides a medium-sized carrier rocket launch pad loading test device, comprising a test platform, the test platform comprising a foundation, a plurality of support blocks provided in the middle of the foundation surface, the support blocks being used to support the launch pad;

[0006] A support structure comprising a plurality of support arms and a plurality of rocket simulation legs, wherein the support arms are arranged in the middle of the upper surface of the launch platform, and the rocket simulation legs are installed on the top of the support arms;

[0007] The loading structure includes a plurality of hydraulic jacks, an adapter ring, and a column. One end of the column passes through the launch pad and is fixedly connected to the foundation. The other end of the column is fixedly connected to the cross beam. The adapter ring is sleeved on the outside of the column and is connected to the tops of the plurality of rocket simulation legs. The surface of the adapter ring is provided with a plurality of hydraulic jacks. The plurality of hydraulic jacks are connected to the same pipeline. The top of the jack is connected to the circumference of the bottom of the cross beam.

[0008] The test structure includes several dial indicators and a level. The several dial indicators are evenly fixed on the periphery of the foundation through a table frame and are used to test the height of the bottom surface of the launch platform. The level is set on one side of the foundation and is used to test the height of the upper surface of the support arm.

[0009] Preferably, the support blocks are uniformly distributed around the bottom of the launching platform, and the number of support blocks on each side of the bottom plane of the launching platform is equal.

[0010] Preferably, the bottom of the support arm is fixedly connected with the upper surface of the launching platform perpendicularly, and the height of the support arm is adjustable.

[0011] Preferably, the rocket simulation support legs are uniformly distributed at the lower part of the adapter ring, and the support arms are arranged at corresponding positions to support the rocket simulation support legs.

[0012] Preferably, the plurality of hydraulic jacks are arranged on the vertical straight line where the rocket simulation support legs are located.

[0013] The application also provides a test method of the launching platform loading test device of the medium-sized launch vehicle, and the specific steps are as follows:

[0014] S1: adjust the plurality of support arms to the middle positions, further adjust the top surfaces of the support arms through the plurality of levels, so that the levelness of the plane where the top surfaces of the support arms are located is less than or equal to 2', and record the level measurement values of the top surfaces of the support arms at this time;

[0015] S2: measure the height of the launching platform ground at each position through each dial gauge, and record the values;

[0016] S3: control the plurality of hydraulic jacks to load to the target load value through the control system;

[0017] S4: measure the height values of the top surfaces of the support arms again through the levels, and record the values;

[0018] S5: measure the height values of the lower bottom surfaces of the launching platform at each position again through the dial gauges;

[0019] S6: control the hydraulic jacks to unload through the control system, and calculate the subsidence amount of the launching platform foundation.

[0020] The experimental device provided by the application has the advantages that the loading device is simple and reliable, has strong loading capacity, can realize 1000-ton loading, the plurality of hydraulic jacks are connected through the same pipeline, high-precision loading is realized under the condition that the driving force value error of the hydraulic jack itself is small, and the measurement of the loading deformation amount can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the application;

[0022] Figure 2 It is a schematic diagram of the coordinate system of the launching platform of the application;

[0023] MARKED DESCRIPTION:

[0024] 1. foundation, 2. support block, 3. rocket simulation leg, 4. hydraulic jack, 5. cross beam, 6. upright, 7. adapter ring, 8. table, 9. level, 10. launch pad, 11. support arm. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described and discussed clearly and completely below in combination with the drawings of the present application. Obviously, only some examples of the present application are described here, and not all examples. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0026] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar terms as used herein are for purposes of description only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0028] Reference is made to Figure 1The application discloses a medium-sized carrier rocket launching platform loading test device, wherein a foundation 1 is a reinforced concrete structure, embedded steel parts are connected with the bottom of a stand 6, the other end of the stand 6 is connected with the central position of a cross beam 5, the lower end surface of the cross beam 5 in four directions is connected with four hydraulic jacks 4, the four hydraulic jacks are connected through the same hydraulic pipeline, the four hydraulic jacks 4 are provided with adapter rings 7 at the lower end, the adapter rings 7 are connected with four rocket simulation supporting legs 3 which are uniformly distributed at the lower part, each rocket simulation supporting leg 3 is arranged on the upper supporting surface of a launching platform 10, supporting arms are further connected between the rocket simulation supporting leg 3 and the upper supporting surface of the launching platform 10, the height of the supporting arm can be adjusted, and the supporting arm is vertically and fixedly connected with the launching platform, the launching platform 10 is arranged on the foundation 1 through 12 supporting blocks 2 which are uniformly distributed, four table frames 8 are uniformly arranged at the bottom of the launching platform 10, dial gauges are fixedly arranged on the table frames 8, the distance between the table frame 8 and the outer side door of the launching platform is more than 1.5 m, and level meters 9 are further arranged on the four directions of the outer side of the foundation, and each level meter is aligned with the position of the supporting arm.

[0029] The application further provides a test method of the medium-sized carrier rocket launching platform loading test device.

[0030] Referring to Figure 2 Figure 2 The launching platform coordinate is defined at the central position of the platform body, the Y positive direction points from the I quadrant (supporting arm I) of the launching platform to the III quadrant (supporting arm III), the Z positive direction points from the II quadrant (supporting arm II) to the IV quadrant (supporting arm IV), and the X direction is vertically upward.

[0031] S1: the height of the supporting arm is adjusted to the middle position, the supporting arm installation top surface is installed by means of the level meter, and the height of the supporting arm is adjusted, so that the levelness of the plane where the four supporting arm installation top surfaces are located is better than 2', the angle of RY is -asin((H14-H12) / 3350)*60 (') and the angle of RZ is -asin((H11-H13) / 3350)*60) according to the measurement values of the four supporting arm upper supporting surfaces H11, H12, H13 and H14.

[0032] S2: the height values of the lower bottom surface of the launching platform are measured by the dial gauges arranged on the table frames 8 and are h11, h12, h13 and h14.

[0033] S3: the hydraulic jacks 4 are controlled to load to the target load value through the control system.

[0034] S4: the height values of the four supporting arm upper supporting surfaces are measured by the level meters and are H21, H22, H23 and H24.

[0035] ​S5: Measure the height value of the lower bottom surface of the launching platform through the dial gauges on the table frame 8, which are h21, h22, h23 and h24 respectively;

[0036] S6: Control the hydraulic jack 4 to unload through the control system;

[0037] S7: The subsidence amount of the launching platform foundation is △h:

[0038] △h=1 / 4[|h21-h11|+|h22-h12|+|h23-h13|+|h24-h14|]

[0039] S8: The average deformation amount of the launching platform is △H:

[0040] △H=1 / 4[|H21-H11|+|H22-H12|+|H23-H13|+|H24-H14|]-△h

[0041] 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 deformation or replacement of the present application within the technical range disclosed by the present application should be covered in 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 medium-sized carrier rocket launch pad loading test device, characterized in that include A test platform, comprising a foundation, a plurality of support blocks provided in the middle of the foundation surface, the support blocks being used to support the launch platform; A support structure comprising a plurality of support arms and a plurality of rocket simulation legs, wherein the support arms are arranged in the middle of the upper surface of the launch platform, and the rocket simulation legs are installed on the top of the support arms; The loading structure includes a plurality of hydraulic jacks, an adapter ring, and a column. One end of the column passes through the launch pad and is fixedly connected to the foundation. The other end of the column is fixedly connected to the cross beam. The adapter ring is sleeved on the outside of the column and is connected to the tops of the plurality of rocket simulation legs. The surface of the adapter ring is provided with a plurality of hydraulic jacks. The plurality of hydraulic jacks are connected to the same pipeline. The top of the jack is connected to the circumference of the bottom of the cross beam. The test structure includes several dial indicators and a level. The several dial indicators are evenly fixed on the periphery of the foundation through a table frame and are used to test the height of the bottom surface of the launch platform. The level is set on one side of the foundation and is used to test the height of the upper surface of the support arm.

2. A medium-sized carrier rocket launch pad loading test device according to claim 1, characterized in that The support blocks are evenly distributed around the bottom of the launch platform, and the number of support blocks on each side of the bottom plane of the launch platform is equal.

3. A medium-sized carrier rocket launch pad loading test device according to claim 1, characterized in that The bottom of the support arm is vertically fixedly connected to the upper surface of the launch platform, and the height of the support arm can be adjusted.

4. A medium-sized carrier rocket launch pad loading test device according to claim 1, characterized in that The rocket simulation legs are evenly distributed at the lower part of the adapter ring, and the support arms are arranged at corresponding positions to support the rocket simulation legs.

5. A medium-sized carrier rocket launch pad loading test device according to claim 1, characterized in that The plurality of hydraulic jacks are arranged on a vertical line where the rocket simulation legs are located.

6. A test method using a medium-sized carrier rocket launch pad loading test device according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: S1: Adjust the support arms to the neutral position, and further adjust the top surfaces of the support arms using the levels so that the horizontality of the plane where the top surfaces of the support arms lie is less than or equal to 2′, and record the level measurement value of the top surface of each support arm at this time; S2: Measure the height of the launch pad ground at each location using each dial indicator and record the value; S3: Controlling a number of hydraulic jacks to load to a target load value through a control system; S4: Use the level again to measure the heights of the top surfaces of several support arms and record the values; S5: Use the dial indicator again to measure the height of the bottom surface of the launch pad at each location; S6: Through the control system, control the unloading of the hydraulic jack and calculate the sinking amount of the launch platform foundation.

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