Device and method for contact resistance measuring and detecting
A detection device and contact resistance technology, which is applied in measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve problems such as high operator requirements, overvoltage or insufficient pressure, and low pressure control accuracy, and achieve the principle Simple structure, accurate and effective measurement, and guaranteed service life
Inactive Publication Date: 2013-03-27
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0002] The resistivity of parts under a certain pressure is the measurement of contact resistance. At present, there is no corresponding measurement device. Similar detection devices are manually hydraulically applied, and the pressure range is not easy to adjust.
During the working process, the pressure control accuracy is not high and the error is large, it is easy to produce overpressure or insufficient pressure, the requirements for the operator are high, and the detection process is not easy to control
Method used
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Embodiment 1
[0024] The invention provides a contact resistance measurement and detection device, which is characterized in that: the contact resistance measurement and detection device includes a pressurized cylinder 1, an initial pressurization solenoid valve 2, an accurate pressurization solenoid valve 3, an electrical control system 4, a lower Electrode 5, upper electrode 6, force limiting spring 7, DC double-arm bridge 8;
[0025] Among them: the pressurized cylinder 1 is connected to the lower electrode 5 through the initial pressurization solenoid valve 2 and the precise pressurization solenoid valve 3 respectively, the upper part of the upper electrode 6 is connected to the force limiting spring 7, the lower electrode 5 and the upper electrode 6 are connected to the DC double arm The electric bridge 8 is connected, and the electric control system 4 is connected with the power system composed of the pressurized cylinder 1, the initial pressurized solenoid valve 2 and the precise pres...
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Abstract
A device for contact resistance measuring and detecting comprises a pressurizing air cylinder, a primary pressurized electromagnetic valve, an accurate pressurizing electromagnetic valve, an electric control system, a lower electrode, an upper electrode, a force-limiting spring and a direct-current double-arm bridge. The pressurizing air cylinder is connected with the lower electrode respectively through the primary pressurizing electromagnetic valve and the accurate pressurizing electromagnetic valve, the upper electrode and the lower electrode are connected with the direct-current double-arm bridge, and the electric control system is connected with a dynamic system formed by the pressurizing air cylinder, the primary pressurizing electromagnetic valve and the accurate pressurizing electromagnetic valve. A method for contact resistance measuring and detecting includes: dividing a workpiece into a plurality of areas, adjusting pressure value, utilizing the direct-current double-arm bridge to measure resistance, mounting the workpiece between the upper electrode and the lower electrode, loading to a limited pressure value, measuring resistance, recording reading, and repeatedly measuring other positions on the workpiece; and when pressure value is within a measuring pressure range required by the workpiece, starting detecting. The device and the method for contact resistance measuring and detecting have the advantages that principle and structure are simple, the pressure value can be automatically controlled, and blade contact resistance can be measured accurately and effectively.
Description
technical field [0001] The invention relates to the field of measuring the resistance value between an oxide film on the surface of a metal plate and a metal substrate, in particular to a contact resistance measuring and detecting device and method. Background technique [0002] There is currently no corresponding measuring device for the measurement of the resistivity of a part under a certain pressure, that is, the contact resistance. Similar detection devices are manually hydraulically applied, and the pressure range is not easy to adjust. During the working process, the pressure control accuracy is not high and the error is large, and it is easy to produce overpressure or insufficient pressure. It has high requirements for the operator and the detection process is not easy to control. Contents of the invention [0003] The object of the present invention is to realize accurate and convenient detection, and especially provides a contact resistance measurement and detect...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01R27/02
Inventor 刘淞宁王俊涛巴晓玉
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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