Pure electric power steering gear for heavy commercial vehicle
A technology for power steering and commercial vehicles, which is applied to electric steering mechanisms, power steering mechanisms, mechanical steering gears, etc., and can solve external leakage, hydraulic power assistance that cannot meet the requirements of timeliness and accuracy of steering, and changes in the installation and layout of steering gears and other problems, to achieve the effect of large output torque, high assemblability, and obvious advantages
Pending Publication Date: 2021-03-30
沙市久隆汽车动力转向器有限公司
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AI Technical Summary
Problems solved by technology
Due to its structural limitations, the electronically controlled hydraulic recirculating ball power steering has natural defects: in the steering process, hydraulic pressure is used as a power source as an unclean energy source, and it also needs to face external leakage, Fault phenomena such as card issuance; in intelligent driving control, the hysteresis of hydraulic power assist and the oil resistance of the cavity cannot meet the growing requirements for timeliness and accuracy of steering
Ordinary mechanical steering gears have limited output capacity and cannot meet the load requirements of heavy-duty commercial vehicles, and it is not expected to change the installation layout of the steering gear on the vehicle for the time being.
Method used
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Embodiment Construction
[0015] The present invention is further illustrated in conjunction with the accompanying drawings and examples.
[0016] See Figure 1-3 , A pure electric power boot converter for heavy commercial vehicles, including electronically controlled steering units, roller wire type mechanical steering
[0017] Roller wire mechanical steering, including a lead screw 14, a lead aperture, a reticulator, a roller 16, a screw drive plate, a roller 14, a razor 18, a rack 19, a retaining ring 20. The two-end bearing support is fixed within the housing 23 of the roller wire mechanical steering, and the screw 14 is connected to the nut 15, and the roller 17 has an outer gear structure, an outer gear and an internal gear 18. Meshing, the inner gear 18 is pressed in the nut 15 inner hole, and the inner bore is contained in the inner bore in the inner bore, and the roller 17 is connected to the inner hole on the planet carrier 19, and the planet carrier 19 is attached to the internal ring gear. The r...
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The invention discloses a pure electric power steering gear for a heavy commercial vehicle. The pure electric power steering gear comprises an electric control steering unit and a roller screw type mechanical steering gear; the roller screw type mechanical steering gear comprises a screw transmission pair composed of a screw, a nut, a roller, an inner gear ring, a planet carrier and a check ring,the two ends of the screw on the screw transmission pair are supported and fixed in the shell of the roller screw type mechanical steering gear through bearings, one end of a steering arm shaft is meshed with the nut through a gear, and the other end of the steering arm shaft is connected with the output end of the steering gear to transmit torque; the electric control steering unit is connected with the shell of the roller screw type mechanical steering gear through a valve body by using a bolt; a worm wheel shaft of the electric control steering unit is in rigid connection with a lead screwof the screw transmission pair through a spline to transmit torque. A hydraulic power assisting system is omitted, and the whole device is convenient to install, compact in structure and accurate in control.
Description
Technical field [0001] The present invention relates to an automobile steering system, and more particularly to a heavy commercial vehicle pure electric steering. Background technique [0002] The cancellation of the fuel engine has played forward the development of smart driving technology. In addition, the landing implementation of China's "Double Points" policy will force all host plants to accelerate the strategic transformation to electrification, and further promote the rapid development of intelligent driving technology. The front axle load of heavy-duty commercial vehicles is large. At present, domestic batch use is hydraulic circulating ball power steering. This type of steering is no electrically controlled steering unit, which cannot meet the needs of smart driving. Thus, many manufacturers have developed an electronically controlled hydraulic circulating ball power steering system, and an electric control unit is integrated based on the traditional hydraulic cycle bal...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B62D5/04B62D3/06
CPCB62D5/0421B62D5/0463B62D5/0454B62D5/0448B62D3/06
Inventor 李小明孔真斌侯学为王明珠彭维俊
Owner 沙市久隆汽车动力转向器有限公司