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Wide-range high-rigidity loading head used for balance calibration system

A balance calibration and loading head technology, which is used in measuring devices, testing of machine/structural components, instruments, etc., can solve the problems of insufficient stiffness of the loading head, large contact stress between the tip and the tip seat, etc., and achieve the effect of fast and accurate positioning

Active Publication Date: 2016-01-06
AVIC SHENYANG AERODYNAMICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a large-scale high-rigidity loading head used in a balance calibration system, which solves the problems of insufficient stiffness of the loading head and large contact stress between the tip and the tip seat in the balance calibration system

Method used

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  • Wide-range high-rigidity loading head used for balance calibration system
  • Wide-range high-rigidity loading head used for balance calibration system
  • Wide-range high-rigidity loading head used for balance calibration system

Examples

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Embodiment Construction

[0016] Below according to the accompanying drawing of the description, give an example to further illustrate:

[0017] Such as Figure 1~3 As shown, a large-scale high-rigidity loading head for a balance calibration system includes an inner sleeve 1, an outer sleeve 2, an inner sleeve positioning device 3, a high-precision joint bearing 4 and a curved rod 5; the inner sleeve 1 Connect with the model end of the balance to be calibrated through the corresponding taper sleeve, the outer sleeve 2 is installed on the outside of the inner sleeve 1, the inner sleeve positioning device is installed on the outer sleeve, and the inner sleeve is fixed by the tightening force of the screw To limit its freedom in all directions, one end of the high-precision spherical bearing 4 is connected to the loading head, the other end of the high-precision spherical bearing 4 is connected to the force transmission part of the calibration system, and the curved rod 5 is connected to the inner sleeve ...

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PUM

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Abstract

The invention provides a wide-range high-rigidity loading head used for a balance calibration system. The wide-range high-rigidity loading head comprises an inner sleeve, an outer sleeve, an inner sleeve positioning device, a high-precision joint bearing and a cranked lever. The inner sleeve is connected with a model end of a calibrated balance through a corresponding taper sleeve. The outer sleeve is arranged outside the inner sleeve. The inner sleeve positioning device is installed on the outer sleeve, fixes the inner sleeve through a screw tightening force and limiting the free degree of the inner sleeve in each direction. The other end of the high-precision joint bearing is connected with a calibration system force transmitting member. The cranked lever is connected with the inner sleeve. The loading head is high in bearing capability, high in rigidity and capable of rapidly and accurately positioning the inner sleeve.

Description

technical field [0001] The invention relates to a calibration test device, in particular to a large-scale and high-rigidity loading head used in a balance calibration system. Background technique [0002] The wind tunnel balance is one of the key equipments in the wind tunnel force test, and the accuracy of the balance directly affects the accuracy of the wind tunnel test data. The balance is a measuring instrument, and it cannot be used without calibration. The calibration of the balance is completed through the balance calibration system, and the loading head is an important part of the balance calibration system. It must have sufficient rigidity and can accurately determine the position of the loading point. . For many years, the loading head has been used to simulate the working state of the balance in balance calibration and loading to obtain the formula of the balance. However, with the successive construction of wind tunnels with large test sections and high Reynolds...

Claims

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Application Information

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IPC IPC(8): G01M9/06
Inventor 王晨赵长辉冯强李小刚周阳孙以心
Owner AVIC SHENYANG AERODYNAMICS RES INST
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