Steering device for unmanned driving of new energy commercial vehicle and new energy commercial vehicle

Abstract

The invention discloses a steering device for unmanned driving of a new energy commercial vehicle. The new energy commercial vehicle comprises a steering column intermediate shaft assembly, a first steering universal joint, a steering shaft, a second steering universal joint, an electric power-assisted circulating ball steering gear, a main motor connected with the electric power-assisted circulating ball steering gear, a retarding mechanism arranged between the steering column intermediate shaft assembly and the first steering universal joint and used for transmitting rotating kinetic energy,an auxiliary motor connected with the retarding mechanism and used for driving the steering column intermediate shaft assembly and the steering shaft to rotate, and an EPS controller electrically connected with the steering column intermediate shaft assembly, the auxiliary motor, the electric power-assisted circulating ball steering gear and the main motor and used for controlling the switching operation of the auxiliary motor and the main motor which are connected in sequence. The invention further provides a new energy commercial vehicle. According to the scheme, the steering device and thenew energy commercial vehicle have the advantages of being simple in structure, stable in operation, small in occupied area, low in maintenance cost and the like.

Description

technical field [0001] The invention relates to the technical field of new energy commercial vehicles, in particular to an unmanned steering device for new energy commercial vehicles and the new energy commercial vehicles. Background technique [0002] At present, the existing mainstream steering method for unmanned driving of new energy commercial vehicles is electro-hydraulic assisted recirculating ball steering, such as figure 1 As mentioned above, its main structure includes mechanical steering column with intermediate shaft assembly, hydraulic power-assisted circulating ball deceleration mechanism, electric steering pump, steering controller, steering oil pot, various oil pipes and mounting brackets, etc. The electronic system is added on the basis, which makes the system more complicated, and the space layout and after-sales maintenance are inconvenient and costly. If and only if, when the electro-hydraulic booster fails, the whole vehicle will be very laborious to tu...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing mainstream steering method for unmanned driving of new energy commercial vehicles is electro-hydraulic assisted recirculating ball steering, such as figure 1 As mentioned above, its main structure includes mechanical steering column with intermediate shaft assembly, hydraulic power-assisted circulating ball deceleration mechanism, electric steering pump, steering controller, steering oil pot, various oil pipes and mounting brackets, etc. The electronic system is added on the basis, which makes the system more complicated, and the space layout and after-sales maintenance are inconvenient and costly

If and only if, when the electro-hydraulic booster fails, the vehicle will be hard to turn (mechanical steering is possible), and safety accidents will easily occur

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