Electric hydraulic steering device for commercial vehicle

A technology for steering devices and commercial vehicles, applied in electric steering mechanisms, power steering mechanisms, automatic steering control components, etc., can solve the problems of inability to meet energy saving and driving comfort, high power consumption in steering, and achieve steering safety. requirements, the effect of meeting the requirements of driving comfort

Active Publication Date: 2016-04-20
沙市久隆汽车动力转向器有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] In order to meet the development requirements of vehicle energy saving, safety and driving comfort, the electric power steering system (EPS) is usually used to replace the existing hydraulic power steering. Motor technology is difficult to economically meet this requirement; that is, it cannot meet the requirements of energy saving and driving comfort, as well as safety during emergency steering

Method used

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  • Electric hydraulic steering device for commercial vehicle

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Embodiment Construction

[0019] The electrohydraulic steering device for commercial vehicles consists of a recirculating ball steering device, an intermediate shaft 1, a mandrel 2, a worm gear 3, a worm 4, a sensor, a support base 5, a motor 6 and a controller; the recirculating ball steering device includes an input shaft 7. Steering screw 8, steering nut 9, torsion bar 10, connecting valve body 11, steering gear housing 12 and steering arm shaft 13. One side of the connecting valve body 11 of the recirculating ball steering device is fixed with an intermediate housing 14 through a connecting screw, and the intermediate housing 14 is equipped with a mandrel 2 through a bearing A15, and one end of the mandrel 2 is connected to the input shaft 7 of the recirculating ball steering device. key connection, the other end of the mandrel 2 extends to the outer end of the intermediate housing 14 . An intermediate shaft 1 is movably fitted on the mandrel 2 in the intermediate housing 14 , and a bearing D19 is ...

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Abstract

The invention relates to an electric hydraulic steering device for a commercial vehicle and belongs to the field of automobile power-assisted steering gears. The electric hydraulic steering device is composed of a recirculating ball steering gear, an intermediate shaft, a spindle, a worm gear, a worm, a sensor, a supporting seat, a motor and a controller, an intermediate shell is fixedly mounted on one side of a connecting valve of the recirculating ball steering gear through a connecting screw, the spindle is mounted in the intermediate shell through a bearing A, one end of the spindle is connected with an input shaft key of the recirculating ball steering gear while the other end of the same extends to the outer end of the intermediate shell, the intermediate shaft is movably mounted on the spindle in the intermediate shell in a sleeving manner and connected with a steering screw of the recirculating ball steering gear. When a vehicle runs normally, the motor and hydraulic power assistance work jointly, so that hydraulic power assistance needed during steering is reduced and the objective of saving energy is achieved; an electronic control unit (ECU) does not provide or provides small electric power assistance according to vehicle speed signals at a high speed, so that requirements on driving stability and safety are met.

Description

technical field [0001] The invention relates to an electrohydraulic steering system for commercial vehicles, which belongs to the field of automobile power steering devices. Background technique [0002] In order to meet the development requirements of vehicle energy saving, safety and driving comfort, the electric power steering system (EPS) is usually used to replace the existing hydraulic power steering. Motor technology is difficult to economically meet this requirement; that is, it cannot meet the requirements of energy saving and driving comfort, as well as safety during emergency steering. Therefore, it is necessary to develop an electric hydraulic steering system that can meet the requirements of energy saving and driving comfort, and can also increase the safety of emergency steering; It is an electro-hydraulic steering device that provides steering assist together with electric power assist; in the event of hydraulic oil pump failure or engine failure, electric po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D5/04B62D6/00B62D5/30B62D101/00B62D111/00
CPCB62D5/0463B62D5/06B62D5/30B62D6/001
Inventor 傅早清李琦姜殿鑫艾涛徐刚春马经华夏甘露
Owner 沙市久隆汽车动力转向器有限公司
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