A Parallel Elastic Connecting Device for Engine Thrust Measuring Bench

An elastic connection and parallel technology, applied in measuring devices, force/torque/power measuring instruments, measuring traction/propulsion power of vehicles, etc. Thrust measurement accuracy and other issues, to achieve the effect of simplifying the thrust evaluation and correction process, improving the thrust measurement accuracy, and reducing the stiffness of the stand

Active Publication Date: 2018-04-10
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the stiffness of the bench was corrected during the thrust evaluation process, the stress on the bench was complicated during the test, and the stiffness of the bench fluctuated greatly, which affected the thrust measurement accuracy

Method used

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  • A Parallel Elastic Connecting Device for Engine Thrust Measuring Bench
  • A Parallel Elastic Connecting Device for Engine Thrust Measuring Bench
  • A Parallel Elastic Connecting Device for Engine Thrust Measuring Bench

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Embodiment Construction

[0023] The invention relates to a high-sensitivity and high-flexibility parallel elastic connecting device for an engine thrust measuring bench. By combining multiple spring pieces in parallel, the connecting device has both pressure-bearing elastic elements and tension-bearing elastic elements. The sensitivity and flexibility of the connection device are improved, and the precision of the thrust measurement bench is indirectly improved.

[0024] The present invention is designed to be used for the flexible connection device of engine thrust measurement test, comprises fixed end, moving end, rigid connection section, three equal-length spring pieces, has various structural forms, such as Figure 1 to Figure 4 shown. figure 1 Schematic diagram of the flexible connection device for the engine support platform; figure 2 Schematic diagram of the flexible connection device for the engine hanging platform; image 3 Schematic diagram of the thickened flexible connection device fo...

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Abstract

The invention discloses a parallel elastic connecting device used for an engine thrust measurement rack. The parallel elastic connecting device comprises a rigid connecting segment 35, a first spring piece 36, a second spring piece 38, a third spring piece 39 and a fixing bolt 37. The cross section of the rigid connecting segment 35 has a convex symmetrical structure. One end of each of the first spring piece 36, the second spring piece 38 and the third spring piece 39 is fixedly connected with the rigid connecting segment 35. The first spring piece 36 and the third spring piece 39 are connected with the two symmetrical sides of the rigid connecting segment 35. The second spring piece 38 is fixedly connected at the middle convex position of the rigid connecting segment 35. The first spring piece 36 and the third spring piece 39 are symmetrically distributed. When the first spring piece 36 and the third spring piece 39 are connected with a fixed frame 1, the second spring piece 38 is connected with a moving frame 21; and when the first spring piece 36 and the third spring piece 39 are connected with the moving frame 21, the second spring piece 38 is connected with the fixed frame 1, the fixed frame 1 is fixed on the foundation and the moving frame 21 is connected with tested equipment.

Description

Technical field: [0001] The invention belongs to the field of engine thrust testing, and in particular relates to a parallel elastic connection device used for an engine thrust measuring bench. Background technique: [0002] Thrust is one of the most important performance indicators of an engine. Accurately measuring engine thrust during the test is of great significance for engine development and performance evaluation. As a key component in thrust measurement, thrust bench has a great influence on the precision of thrust measurement. All aero-engine thrust platforms use flexible connection devices as elastic elements to support and guide the system. For the thrust measurement bench, the support element needs to have small resistance in the whole range of engine thrust measurement, so as to ensure the accuracy of thrust measurement. At the same time, it needs to have good hysteresis characteristics, especially for test subjects that need to have transient thrust measureme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/13
CPCG01L5/133
Inventor 张有吴锋何培垒陈鹏飞耿卫民
Owner AECC SICHUAN GAS TURBINE RES INST
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