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Capacitive coupling-based rotating part torque testing device

A technology of torque testing and capacitive coupling, used in measuring devices, torque measurement, power measurement, etc.

Inactive Publication Date: 2013-09-04
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve many problems existing in the existing rotating part torque test, the present invention provides a rotating part torque testing device based on capacitive coupling

Method used

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  • Capacitive coupling-based rotating part torque testing device
  • Capacitive coupling-based rotating part torque testing device
  • Capacitive coupling-based rotating part torque testing device

Examples

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Embodiment 1

[0027] A torque testing device for a rotating part based on capacitive coupling, comprising a first inductive element pasted on the measured part of the rotating part 1 in a power mechanical device, a second inductive element arranged in the power mechanical device,

[0028] The first inductive element is composed of resistance strain gauge Ra3a and resistance strain gauge Rb3b, one end of resistance strain gauge Ra3a and resistance strain gauge Rb3b is respectively connected to the rotating part 1 through lead wires 2a and 2b, the rotating part 1 is grounded, and the resistance The mutual positional relationship between the strain gauge Ra3a and the resistance strain gauge Rb3b ensures that each resistance strain gauge produces torsional deformation as the rotating member 1 rotates;

[0029]Described second inductive element is made of movable support 6, static support 7, the movable polar plate that is located on the dynamic support 6 and the static polar plate that is locate...

Embodiment 2

[0036] A torque testing device for a rotating part based on capacitive coupling, comprising a first inductive element pasted on the measured part of the rotating part 1 in a power mechanical device, a second inductive element arranged in the power mechanical device,

[0037] The first inductive element is composed of resistance strain gauge Ra3a and resistance strain gauge Rb3b, one end of resistance strain gauge Ra3a and resistance strain gauge Rb3b is respectively connected to the rotating part 1 through lead wires 2a and 2b, the rotating part 1 is grounded, and the resistance The mutual positional relationship between the strain gauge Ra3a and the resistance strain gauge Rb3b ensures that each resistance strain gauge produces torsional deformation as the rotating member 1 rotates;

[0038] Described second inductive element is made of movable support 6, static support 7, the movable polar plate that is located on the dynamic support 6 and the static polar plate that is locat...

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Abstract

The invention relates to the rotary part torque testing field of power mechanical devices, in particular to a capacitive coupling-based rotating part torque testing device. The capacitive coupling-based rotating part torque testing device comprises a first sensing element which is bonded to the to-be-tested part of a rotating part in the power mechanical device, and a second sensing element which is arranged in the power mechanical device. The structure and the principle of the capacitive coupling-based rotating part torque testing device disclosed by the invention are different from the structure and the principle for reflecting the torque by utilizing the bridge voltage output of the conventional construction electrical bridge, and are also different form the structure and the principle for solving the torque by utilizing a phase difference in the conventional two groups of capacitive grids, magnetic grids and optical grids. According to the torque testing device disclosed by the invention, not the construction electrical bridge but only one group of capacitance plate is required, and the torque testing is realized by detecting torque information acquired by the first sensing element and the second sensing element by a circuit through capacitive coupling.

Description

technical field [0001] The invention relates to the field of torque testing of rotating parts of power machinery devices, in particular to a torque testing device for rotating parts based on capacitive coupling. Background technique [0002] Torque is an important parameter to characterize the power of rotating parts such as transmission shafts, road wheels, gears, connecting rods, etc. of power machinery such as vehicles and ships. Torque testing is divided into contact method and non-contact method according to the transmission method. The contact method is mainly to build a DC bridge with resistance strain gauges and use brush-type collector rings for power supply. However, due to excessive vibration, the brushes are in poor contact and cause signal fluctuations. , resulting in large measurement errors or even unsuccessful measurements; the non-contact method mainly uses magnetoelastic, magnetoelectric and photoelectric sensors, and wireless telemetry signal wireless tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00
Inventor 马铁华靳鸿陈昌鑫禹健裴东兴武耀艳母燕芳沈大伟谢锐刘双红
Owner ZHONGBEI UNIV