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A kind of centroid three-point support redundant measurement equipment

A measuring equipment and three-point support technology, which is applied in the direction of measuring devices, weighing equipment testing/calibration, testing of machines/structural components, etc., can solve problems such as complicated processes and inability to make timely judgments, reduce the number of calibrations, and realize Automatic centering, avoiding the effect of recalibration

Active Publication Date: 2018-08-31
BEIJING INST OF SPACE LAUNCH TECH +1
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Problems solved by technology

[0004] At present, the equipment that uses the three-point support method to measure the mass center of mass cannot judge in time if the load cell fails during the measurement process, and can only confirm the equipment status through calibration before and after use.
When replacing a failed load cell, it is generally necessary to remove the product under test and recalibrate the device after replacement, which is a complicated process

Method used

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  • A kind of centroid three-point support redundant measurement equipment
  • A kind of centroid three-point support redundant measurement equipment
  • A kind of centroid three-point support redundant measurement equipment

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Embodiment Construction

[0026] The mass centroid three-point support redundant measurement equipment includes the mass centroid redundant test bench main structure, control system hardware and software, etc.

[0027] The main structure of the centroid redundant test bench is composed of three weighing components, a centroid disk and a base.

[0028] The 3 weighing components have the same structure, see figure 1 , each weighing assembly includes a top-down auxiliary load cell 3-2, a sphere centering assembly, and a main load cell 3-5, and the auxiliary load cell 3-2 is stacked through a sphere centering assembly To the main load cell 3-5, the sub-load cell 3-2 and the main load cell 3-5 are applied in opposite directions and have the same magnitude. The weighing assembly also includes a secondary load cell mounting plate 3-1, an upper positioning column, a main load cell mounting plate 3-6 and a lower positioning column; the lower surface of the secondary load cell mounting plate 3-1 is used to inst...

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Abstract

The invention relates to mass and center three-point supporting redundancy measuring equipment.The mass and center three-point supporting redundancy measuring equipment comprises three weighing assemblies, a center tray and a base.The center tray is used for carrying a tested object and provided with a positioning part for matched positioning of the tested object.The base supports a mass and center three-point supporting redundancy measuring equipment body.The three weighing assemblies are located between the center tray and the base and are evenly distributed in the circumferential direction.Each weighing assembly comprises an auxiliary weighing sensor, a sphere alignment assembly and a main weighing sensor which are arranged from top to bottom, wherein the auxiliary weighing sensor is stacked on the main weighing sensor through the sphere alignment assembly.According to the measuring equipment, test failures or test interruption caused by failures of weighing sensors is avoided in the process of a three-point supporting method, the other set of sensors can be used for reading numerical values if a certain sensor in one set of sensors breaks down, the phenomenon that the test process needs to be interrupted due to the failure of a certain sensor, and consequently repetition of the processes such as recalibration and reassembling is caused can be avoided, and the testing efficiency is improved.

Description

technical field [0001] The invention relates to a three-point support redundant measurement device for mass centroid, which belongs to the field of mass centroid measurement. Background technique [0002] According to different measurement principles, mass center of mass measurement methods are usually divided into three categories: suspension method, compound pendulum measurement method and mass response method. [0003] The three-point support method is a kind of mass response method. It is a widely used method for measuring the center of mass at present. It uses three load cells to support the test platform, and can simultaneously measure the mass, center of mass and mass of the test object through the principle of moment balance. Measured off-centre. The method has the advantages of simple structure, convenient measurement, high measurement efficiency and high measurement precision. [0004] At present, the equipment that uses the three-point support method to measure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/12G01D21/02G01G23/01
CPCG01D21/02G01G23/01G01M1/122
Inventor 赵立乔谢业波孙振莲霍卫星许学雷田青亚贺建华
Owner BEIJING INST OF SPACE LAUNCH TECH
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