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Self-calibration thrust measurement device for engine test bench

A measuring device and self-calibration technology, applied in measuring devices, engine testing, force/torque/power measuring instruments, etc., can solve problems such as stiffness error, influence on thrust measurement accuracy, large deviation distance of test bench, etc., and improve the experimental results. Accuracy, guaranteed repeatability effect

Inactive Publication Date: 2014-03-05
BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the field of aerospace, the existing engine test bench has affected the accuracy of thrust measurement due to its own system stiffness error; in addition, the existing engine test bench has a large deviation distance after several tests, which makes it difficult to ensure The repeatability of the test

Method used

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  • Self-calibration thrust measurement device for engine test bench
  • Self-calibration thrust measurement device for engine test bench
  • Self-calibration thrust measurement device for engine test bench

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Embodiment Construction

[0015] Such as figure 1 As shown, the present invention includes a moving frame 1, a hydraulic cylinder 2, a force transmission device 3, a self-calibrating sensor 4, a measuring sensor 7, a guide system, a fixed frame 10, and a support block 11. The fixed frame 10 is fixedly connected to the ground; the movable frame 1 is located above the fixed frame 10; the support blocks 11 are located at both ends of the upper surface of the fixed frame 10, and are used to support the movable frame 1; the hydraulic cylinder 2 is fixed on the hydraulic base, and the hydraulic base Fixed on the fixed frame 10, the pressure output end of the hydraulic cylinder 2 is connected to the force transmission device 3, the force transmission device 3 is connected to the self-calibration sensor 4, the self-calibration sensor 4 is fixed on the self-calibration base 5, and the measurement sensor 7 is fixed on the measurement The base 6 is fixed on the moving frame 1 , and the self-calibration base 5 and...

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Abstract

The invention discloses a self-calibration thrust measurement device for an engine test bench, and relates to a mechanical measurement device. The self-calibration thrust measurement device comprises a movable frame, a hydraulic cylinder, a power transmission device, a self-calibration sensor, a measurement sensor, a guide system and a fixed frame, wherein the fixed frame is fixedly connected with the ground; the movable frame is arranged above the fixed frame; the pressure output end of the hydraulic cylinder is connected with the power transmission device; the power transmission device is connected with the self-calibration sensor; the self-calibration sensor and the measurement sensor are fixed on the movable frame; the hydraulic cylinder generates thrust, and then acts on the self-calibration sensor through the power transmission device; the self-calibration sensor exerts the thrust on the movable frame; the movable frame moves and transmits acting force to the measurement sensor; the guide system moves along with the movable frame and elastically deforms; the guide system drives the movable frame to restore to the normal position after the hydraulic cylinder stops working. By adopting the self-calibration thrust measurement device, an error on the measured numerical value caused by rigidity of the system can be calculated; meanwhile, the repeatability of a plurality of experiments is ensured; the test accuracy is greatly improved.

Description

technical field [0001] The invention relates to a mechanical measuring device. Background technique [0002] In the field of aerospace, the existing engine test bench has affected the accuracy of thrust measurement due to its own system stiffness error; in addition, the existing engine test bench has a large deviation distance after several tests, which makes it difficult to ensure The repeatability of the experiments. Contents of the invention [0003] The technical solution problem of the present invention is: overcome the deficiencies in the prior art, provide a kind of self-calibration thrust measuring device that is used for engine test bench, calculate the error that system stiffness produces to measured value, revise the experimental data of engine thrust, guarantee at the same time The repeatability of multiple tests improves the test accuracy. [0004] The technical solution of the present invention is: a self-calibrating thrust measuring device for an engine te...

Claims

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Application Information

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IPC IPC(8): G01L5/00G01M15/00
Inventor 孙涛蒋博黄景博陈良泽卜俊辉
Owner BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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