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Vertical forced synchronous electric drive device of semi-flexible throat block in continuous transonic wind tunnel nozzle section

A technology of forced synchronization and electric drive, which is applied in the direction of measuring devices, aerodynamic tests, and testing of machine/structural components, etc. It can solve the problems of not being able to provide high rigidity of lateral connections, large spatial movement range, and large overall swing quality. , so as to avoid collision accidents of side wall panels, reduce control difficulty, and drive large loads

Active Publication Date: 2021-01-26
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional working method of the throat block is the "frame swing type", which has the disadvantages of large overall swing mass, low control precision, large spatial movement range, and cannot provide high rigidity of lateral connection. Generally, it is only suitable for small and medium-sized wind tunnels

Method used

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  • Vertical forced synchronous electric drive device of semi-flexible throat block in continuous transonic wind tunnel nozzle section
  • Vertical forced synchronous electric drive device of semi-flexible throat block in continuous transonic wind tunnel nozzle section
  • Vertical forced synchronous electric drive device of semi-flexible throat block in continuous transonic wind tunnel nozzle section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: as figure 1 As shown, a vertical forced synchronous electric drive device for the semi-flexible throat block of the nozzle section of a continuous transonic wind tunnel is characterized in that it includes two units C, and each unit has two vertically arranged mounting seats (10), two groups of parallel driving devices arranged symmetrically before and after are fixed on each mounting seat (10); in each group of driving devices, there are two sets of guide rails (8) vertically parallel and symmetrically arranged on the left and right sides, and the guide rails ( 8) Fixed on the mounting base (10); each set of guide rails (8) includes two sets of guide rails (8) arranged vertically and in parallel, and two sliders (6) with a certain installation distance are arranged on each set of guide rails ; The slide table (5) is vertically and parallelly installed on the slide block (6); the motor (9) is connected through the reducer (11) and the lead screw (7) throug...

Embodiment 2

[0035]Embodiment 2: The main structure of this example is the same as that of Embodiment 1. In order to ensure the synchronization accuracy of the drives within the group, each group has a slide table (5) for forced synchronization. The slide table forces the motors (9) of each group to move together, reducing the motion error and lateral force among the motors (9) of the same group.

Embodiment 3

[0036] Embodiment 3: The main structure of this example is the same as Embodiment 1. In order to optimize each group of driving forces, four groups of motors (9) are used to drive to form a planar mechanism, and redundant drives are used. Three groups are position control, and one group is force control. The design of the planar mechanism reduces the difficulty of kinematic control and improves the reliability of control; driven by three sets of position-controlled motors (9), the throat block can accurately form the required profile, adding a set of force control The motor (9) of the motor (9) greatly reduces the driving force required by the remaining three groups of position control motors without changing the throat block. Each group is synchronously driven by two motors, and the driving force required by each group of motors is equally divided between the two motors of each group, which reduces the driving force.

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Abstract

The invention discloses a vertical forced synchronous electric driving device for a semi-flexible throat block of a nozzle section of a continuous transonic wind tunnel. The invention is used to realize the plane three-degree-of-freedom movement of the semi-flexible-wall throat block of the nozzle section of the continuous transonic wind tunnel. The guide element guide rail slider and the drive element servo motor of the invention are arranged vertically, and an integrated sliding table is used on the mechanical level. The synchronization of the same group of drives is mandatory, and the mechanism principle of the vertical forced synchronous motor drive device in the longitudinal plane of the semi-flexible throat block of the entire continuous transonic wind tunnel nozzle section is a planar three-degree-of-freedom mechanism. The invention has the characteristics of good overall rigidity, simple structure, space reuse, side force elimination, high synchronization precision, large driving load, high stability, strong impact resistance, high safety and reliability, and the like.

Description

technical field [0001] The invention belongs to the technical field of continuous transonic wind tunnel tests, and relates to a vertical forced synchronous electric drive device for a semi-flexible throat block of a nozzle section of a continuous transonic wind tunnel. The device is used to realize a continuous transonic wind tunnel Planar three-degree-of-freedom motion of a semi-flexible throat block in a nozzle section. 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. [0003] According to the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 谢志江邓红俊冯超张志峰刘飞谷家伟
Owner CHONGQING UNIV