Hydrostatic driving movement gear shifting control method and system

• Main Authors: LIU BIN, CHEN YAN, SONG YAZHAO, ZHAO JINGUANG, WANG CUNLEI, WANG GAOFENG
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a hydrostatic driving movement gear shifting control method which comprises the steps of load reduction, neutral gear switching, synchronous control and target gear switching, wherein in the step of the load reduction, when gear shifting is required, differential pressure delta p between the high-pressure side and the low-pressure side of a motor is reduced; in the step of the neutral gear switching, a gear shifting actuator is switched to a neutral gear state when the delta p is reduced to preset differential pressure; in the step of the synchronous control, a rotating speed of the motor is controlled, and a rotating speed of an input shaft of a gearbox and a rotating speed of an output shaft of the gearbox are synchronized based on a target gear transmission ratio; and in the step of the target gear switching, the gear shifting actuator is switched to a target gear. The gearbox used in the hydrostatic driving movement gear shifting control method is not provided with a clutch or a sy