Axial force measuring device and method for centrifugal flyweight of aeroengine
An aero-engine and centrifugal flyweight technology, which is applied to the measurement of properties and forces of piezoelectric devices, can solve problems such as poor practicability, and achieve the effect of reducing experimental costs and reducing interference.
Inactive Publication Date: 2018-08-17
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0005] In order to overcome the shortcomings of poor practicability of existing aero-engine centrifugal flyweight axial force measuring devices, the present invention provides an aero-engine centrifugal flyweight axial force measuring device
Method used
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Embodiment Construction
[0027] The following examples refer to Figure 2-3 .
[0028] The centrifugal flyweight axial force measuring device of the aero-engine of the present invention comprises a short guide rod 7, a miniature planar thrust ball bearing 8, a force measuring member 9, a nut 10, a base 11, a load cell 12, a casing 13 and a lubricating oil injection port 14 . The upper end of the polished short guide rod 7 is used to contact the swing arm 6 of the centrifugal flyweight 3 . There is a boss at the lower end of the short guide rod 7, and the boss is stuck on the gasket on the miniature plane thrust ball bearing 8. Short guide rod 7 diameter 8mm. Miniature plane thrust ball bearing 8 inner diameter 4mm, outer diameter 10mm, thickness 4.5mm; steel ball diameter 2mm, quantity 8. The other end of the miniature plane thrust ball bearing 8 is connected to the boss of the force measuring member 9, and the boss is stuck on the gasket under the miniature plane thrust ball bearing 8. The diame...
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Abstract
The invention discloses a device and a method used for measuring axial aeroengine centrifugation flying weight force and solves a technical problem of poor practicality existing in a measurement device in the prior art. The device is characterized by comprising a short guide rod, a micro planar push force ball bearing, a force measurement member, a nut cap, a foundation, a force measurement sensor and a casing, wherein the upper end of the short guide rod contacts a swing arm of a centrifugation flying weight block, the lower end of the short guide rod is provided with a boss in transition matching with a pad at one end of the micro planar push force ball bearing, the other end of the micro planar push force ball bearing is connected with a boss of the force measurement member, the boss of the force measurement member is in transition matching with a lower pad of the micro planar push force ball bearing, the force measurement member is in thread connection with the casing, the short guide rod is fixed through the casing, the nut cap on the force measurement member is used for fixing the casing, the force measurement member is fixed through a circular groove of the foundation, and the force measurement sensor is fixed between the force measurement member and the foundation. The micro planar push force ball bearing is employed, the technical problem of frictional damage of the short guide rod and the swing arm to system structure integrity is solved, the method is simple, and cost is low.
Description
technical field [0001] The invention relates to a measuring device, in particular to an aeroengine centrifugal flyweight axial force measuring device. It also relates to a method for measuring the axial force of the centrifugal flyweight of an aeroengine by using the measuring device. Background technique [0002] Aeroengine fuel control systems usually choose the engine speed as the controlled variable, and the centrifugal flyweight is used as the speed sensitive element, which can be used to measure the speed of the engine in various states. It can convert the change of rotational speed into the change of displacement. [0003] refer to figure 1 . The document ""Aero-Engine Control (Volume 1)" (Northwestern Polytechnical University Press, published in June 2008) Chapter 3 Section 2 (98 pages)" discloses an aero-engine centrifugal flyweight axial force measuring device, including Transmission mechanism 1, bracket 2, centrifugal fly weight 3, guide rod 4, alignment sprin...
Claims
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IPC IPC(8): G01L1/16
CPCG01L1/16
Inventor 彭凯何苗康樊丁杨帆田放
Owner NORTHWESTERN POLYTECHNICAL UNIV