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Continuous type transonic wind tunnel semi-flexible wall jet tube guide rail horizontal throat block driving device

A drive device, transonic technology, applied in the field of horizontal throat block drive device of semi-flexible wall nozzle guide rail, can solve the problems of inability to provide throat block and inconvenience, and achieve convenient mechanism maintenance, large driving force and long-term stability Good results

Active Publication Date: 2018-08-03
中国空气动力研究与发展中心设备设计及测试技术研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: accurate molding in the limited installation space and operating space; the throat block weighs hundreds of tons, and the current "frame swing type" used for throat block drive is not stable enough to provide stability for the throat block Continuous posture and shape; lateral force will affect the forming ability of the throat block; the drive mechanism of the throat block is complex and inconvenient to maintain

Method used

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  • Continuous type transonic wind tunnel semi-flexible wall jet tube guide rail horizontal throat block driving device
  • Continuous type transonic wind tunnel semi-flexible wall jet tube guide rail horizontal throat block driving device
  • Continuous type transonic wind tunnel semi-flexible wall jet tube guide rail horizontal throat block driving device

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Experimental program
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Effect test

Embodiment 1

[0028]The support platform (5) is a flat plate with slots placed horizontally, used for installing and precisely positioning the guide rail (702), and can fully bear the force of the guide rail (702) on it during work. Good rigidity is ensured by designing its structure, which will ensure the pose forming accuracy of the final throat block (1). Several drive units (7) are housed on the support platform (5), and each drive unit (7) includes: a servo motor (705) is connected with a right-angle reducer (706) to reduce the output speed of the motor, and the servo motor (705 ) and the reducer (706) are horizontally installed on the support platform (5) through the reducer support (709); Lead screw (703) is installed on the top of support platform (5) by lead screw support (701), the output of reducer (706) drives lead screw (703) to rotate through coupling (704), lead screw nut (707 ) converts the rotation of the leading screw (703) into linear motion in the horizontal direction. ...

Embodiment 2

[0030] The main structure of this embodiment is the same as that of Embodiment 1. Furthermore, in addition to bearing the weight of each component, the semi-flexible throat block of the nozzle section of the large-scale continuous transonic wind tunnel also needs to consider the complex and variable aerodynamic load. It is necessary to judge the layout of the guide rail slider according to the force of the specific mechanism. It is a double guide rail double slider arrangement or a multi guide rail multi slider arrangement, so as to ensure that the force is within the bearing range of the guide rail slider and make the guide rail slider normal. operation, and to ensure that it has a certain service life.

Embodiment 3

[0032] The main structure of this embodiment is the same as that of Embodiment 1. Furthermore, since the semi-flexible guide rail horizontal throat block driving device of the continuous transonic wind tunnel nozzle section will be subjected to lateral force, the guide rail horizontal throat block driving device is designed as A six-degree-of-freedom mechanism is used to obtain the ability to actively resist lateral forces, so the rotating hinge can choose a spherical hinge. However, since the displacement of the throat block in the longitudinal direction is very small, the space pose of the throat block is less than 5° at the lateral inclination angle, and since the joint bearing can rotate in three directions at a small angle, the joint bearing can also be used for the rotary hinge.

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Abstract

The invention discloses a continuous type transonic wind tunnel semi-flexible wall jet tube guide rail horizontal throat block driving device, which realizes precise control of a pose of a throat block in a jet tube section. The device comprises driving units each consisting of a horizontally-arranged motor, a speed reducer, a lead screw, a sliding table, guide rails and sliding blocks, executionunits each consisting of a two-force bar and joint bearings, and a supporting unit consisting of a supporting platform. The continuous type transonic wind tunnel semi-flexible wall jet tube guide railhorizontal throat block driving device has the advantages of being simple and compact in structure, realizing independent control of each driver, being high in stability of the overall driving device, being capable of realizing pose adjustment by using the surplus space in the horizontal direction when stroke in the vertical direction is limited, realizing space reuse through staggered arrangement of the guide rails, saving the space in the horizontal direction, significantly facilitating mechanism maintenance since all the driving units are arranged on the supporting platform, being capableof realizing six-degree-of-freedom pose adjustment so as to resist the influence of a lateral force on the throat block, and the like.

Description

technical field [0001] The invention relates to a continuous transonic wind tunnel nozzle section semi-flexible wall guide rail horizontal throat block drive device, which belongs to the field of special equipment for wind tunnel testing, and is a semi-flexible device for precise adjustment of different Mach numbers of the nozzle section in the wind tunnel. Horizontal throat block drive for wall nozzle guides. Background technique [0002] The wind tunnel is an important test device used to verify whether the aerodynamic shape of various types of aerospace vehicles and high-speed EMUs is reasonable. Its main principle is to simulate the external gas flow field characteristics (Mach number, Reynolds number, etc.) number, Prandtl number, etc.), and make a series of evaluations on the measured parameters of the tested object in the simulated flow field, so as to realize the prediction of its characteristics under real working conditions. Wind tunnels can be divided into subson...

Claims

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Application Information

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IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 宋代平胡知诿陈振华尹永涛廖文林张浩张志秋谢志江皮阳军刘飞
Owner 中国空气动力研究与发展中心设备设计及测试技术研究所
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