Special machine tool for testing noise of steering gear

By using a servo electric cylinder and adding a floating compensation mechanism in a special machine tool for steering gear noise testing, the problems of hydraulic power and servo electric cylinder response speed are solved, the equipment is miniaturized, noise and cost are reduced, and accurate simulation of steering gear noise testing is achieved.

CN223412984UActive Publication Date: 2025-10-03BOSCH HUAYU STEERING SYSTEMS (YANTAI) CO LTD
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Patent Information

Application Number
CN202422758794.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-10-03
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

The existing steering gear noise test machine tool uses hydraulic power, which has the problems of large equipment size, high cost, high noise, poor cleanliness and difficulty in achieving rapid acceleration and deceleration conditions. In addition, the force value response of the servo electric cylinder is too fast, resulting in insufficient PLC data acquisition speed.

Method used

A servo electric cylinder is used as the power source, and a floating compensation mechanism is added between the servo electric cylinder and the pressure sensor to slow down the speed of force change. Combined with the overall design of the machine tool, the abnormal working noise of the steering gear under loading conditions is simulated.

Benefits of technology

The device has been miniaturized, cost-reduced, and noise-reduced. It can sensitively identify and simulate the abnormal working noise of the steering gear under vehicle installation conditions, meeting noise test requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of steering gear testing, in particular to a special machine tool for testing noise of a steering gear, which comprises a base, a product supporting and sound receiving device, a sleeve position adjusting mechanism, a shell supporting structure, a rack ejector rod mechanism and a torque input mechanism. A product supporting and sound receiving device, shell supporting structures and steering engine rack ejector rod mechanisms are installed on the base, the two sides of the product supporting and sound receiving device are each provided with one shell supporting structure, one rack ejector rod mechanism is installed below each shell supporting structure, and a sleeve position adjusting mechanism is installed at the top of one shell supporting structure. The torque input mechanism is installed on the sleeve position adjusting mechanism. Compared with the prior art, the servo electric cylinder is adopted, and the floating compensation mechanism is additionally arranged between the servo electric cylinder and the pressure sensor, so that the change speed of a force value is slowed down; the abnormal working noise of the steering engine under the loading condition can be sensitively distinguished and simulated, so that the noise testing requirement is met.
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