Electric power-assisted steering tubing noise detection bench

Abstract

The invention relates to an electric power-assisted steering tubing noise detection bench, which comprises a first servo motor, a first ballscrew and a first linear guide pair that are arranged at the upper portion of a main rack, wherein a guard gate is arranged in front of the main rack, and a second sound insulation material is arranged on the guard gate; the detection bench also comprises a first sound insulation material that is arranged on the main rack; a first microphone in high sensitivity, a second microphone in high sensitivity, a first SKF stethoscope and a second SKF stethoscope are arranged on a second cylinder. The device detection environment is a semi-anechoic room, which can eliminate the influence of outside noise on a detection result; the assembly noise can be detected by simulating a whole vehicle running state and a rapid commutation state; three detection modes are provided, namely device, program detection and artificial detection are combined, thereby raising detection accuracy; and five detection positions cover all abnormal points of the assembly, thereby preventing detection leakage, and detecting abnormal member of the electric steering tubing effectively.

Description

technical field [0001] The invention relates to an electric power steering column noise detection platform, which belongs to the technical field of automobile detection. Background technique [0002] According to the applicant's understanding, the original noise detection method is to energize the column motor to drive the assembly to run, and listen to whether there is any abnormal noise in the assembly with the human ear; the inspection environment is open, and external noise has a great impact on the detection results; Direct power-on operation, not simulating the operation of the whole vehicle, the inspection results are false; the noise during fast reversing cannot be detected; the detection is only human judgment, which is prone to misjudgment; the detection only detects the abnormal sound at the casing of the column, and cannot cover all possibilities Noise. Contents of the invention [0003] The object of the present invention is to propose a noise detection platf...

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Problems solved by technology

[0002] According to the applicant's understanding, the original noise detection method is to energize the motor of the pipe column to drive the assembly to run, and listen to whether there is any abnormal noise in the assembly with the human ear; the inspection environment is open, and external noise has a great impact on the detection results; Direct power-on operation, not simulating the operation of the whole vehicle, the inspection result is false; the noise during fast reversing cannot be detected; the detection is only human judgment, which is prone to misjudgment; the detection only detects the abnormal sound at the casing of the pipe string, and cannot cover all possibilities Noise

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