Electric push rod power-assisted steering device

Abstract

The invention discloses an electric push rod power-assisted steering device which comprises a steering pull rod with a tension-compression stress sensor, an electric push rod and a power-assisted steering controller. The tension-compression stress sensor is mainly used for detecting the size and the direction of force applied to the steering pull rod and mounted in the middle of the steering pullrod in a threaded connection manner. One end of the electric push rod is mounted at the middle right end of a steering linkage rod, and the other end of the electric push rod is mounted at the middleleft end of a front axle in a single-rod offset manner. The power-assisted steering controller mainly comprises a 51 single chip microcomputer, a signal acquisition and processing circuit, an electricpush rod driving circuit, a monitoring circuit, a protecting circuit and the like and is used for controlling expansion of the electric push rod and accordingly realizing power-assisted steering according to acquired stress of the steering pull rod. Energy consumption can be effectively reduced, environmental pollution is reduced, the device can adapt to various running conditions, steering characteristics of a vehicle are improved, and the device has good low-temperature working performance.

Description

technical field [0001] The invention relates to the field of automobile steering assist systems, in particular to an electric steering assist device. Background technique [0002] With the proposal of electric new energy, electric four-wheel vehicles have been developed and applied rapidly. At present, the power steering of vehicles is mainly divided into hydraulic type and electric type. Among them, the hydraulic power steering system mainly has problems such as high power consumption, complex structure, and poor environmental adaptability; the electric power steering system mainly relies on the motor as the driving force. The structure is complex, the failure rate is high, and the power steering is small. Contents of the invention [0003] The purpose of the present invention is to solve the above problems, the present invention mainly provides an electric push rod type power steering device with simple structure, high efficiency and energy saving, and light steering; t...

AI Technical Summary

Problems solved by technology

At present, the power steering of vehicles is mainly divided into hydraulic type and electric type. Among them, the hydraulic power steering system mainly has problems such as high power consumption, complex structure, and poor environmental adaptability; the electric power steering system mainly relies on the motor as the driving force. Problems such as complex structure, high failure rate, and small power steering

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