The invention discloses a semi-integral type hydraulic power-assisted multi-axle steering system and a control method thereof. The steering system comprises a steering wheel, a semi-integral type hydraulic power-assisted steering device, a full-hydraulic steering device, a first steering pump, a second steering pump, an oil tank and at least two steering axles; the semi-integral type hydraulic power-assisted steering device comprises a mechanical steering device and a sliding valve, the sliding valve is connected with a first steering power-assisted cylinder and a first steering pump of the first front axle, and an input screw connected with a valve element of the sliding valve and a piston in threaded connection with the input screw through a steel ball are arranged in an outer shell of the mechanical steering device; the full-hydraulic steering device is connected with a second steering power-assisted cylinder and a second steering pump of the second front axle, an output screw is in threaded connection to the piston through the steel ball, a lower cover is fixed to the outer shell of the mechanical steering device, and the output screw is installed on the lower cover through a bearing and is connected with the full-hydraulic steering device. By means of the structure, the piston is matched with the output screw to transmit power to the full-hydraulic steering device, and simultaneous steering of the front axle and the back axle can be guaranteed.
Semi-integral type hydraulic power-assisted multi-axle steering system and control method thereof
2015-06-17
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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