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An electrohydraulic steering device for commercial vehicles

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

Active Publication Date: 2017-12-01
沙市久隆汽车动力转向器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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  • An electrohydraulic steering device for commercial vehicles

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Embodiment Construction

[0019] The electric hydraulic steering device for commercial vehicles consists of a recirculating ball steering gear, an intermediate shaft 1, a core shaft 2, a worm gear 3, a worm 4, a sensor, a support seat 5, a motor 6 and a controller; the recirculating ball steering gear 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. The connecting valve body 11 side of the recirculating ball steering gear is fixedly equipped with an intermediate housing 14 through a connecting screw. The intermediate housing 14 is equipped with a core shaft 2 through a bearing A15. One end of the core shaft 2 is connected to the input shaft 7 of the recirculating ball steering gear. The key connection, the other end of the mandrel 2 extends to the outer end of the intermediate casing 14. An intermediate shaft 1 is movably sleeved on the core shaft 2 in the intermediate housing 14, and a bearing D19 ...

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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 electric hydraulic steering system for commercial vehicles, and belongs to the field of automobile power steering gears. Background technique [0002] In order to meet the development requirements of vehicle energy saving, safety and driving comfort, electric power steering system (EPS) is usually used to replace the existing hydraulic power steering. However, due to the high power consumption of medium and heavy commercial vehicles, the current stage Motor technology is difficult to meet this requirement economically; that is, it cannot meet the requirements of energy saving, driving comfort, and safety during emergency steering. For this reason, it is necessary to develop a system that can not only meet the requirements of energy saving and driving comfort, but also increase the safety during emergency steering; and under normal working conditions, the electro-hydraulic steering system is operated by hydraulic pressure accordin...

Claims

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Application Information

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Patent Type & Authority Patents(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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