Efficient hydraulic system for bale lifting

• Main Authors: NING BO, WANG XUN'AN, WU WEI, QIU MINGJUN, XIE TONGHU, PENG LIGUANG, WANG YAQIANG
• Format: Patent
• Language: Chinese; English
• Published: 06.02.2024
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model provides a bale lifting efficient hydraulic system which comprises a proportional valve, an emergency lifting valve and a lifting hydraulic cylinder. The proportional valve is a three-position four-way electromagnetic valve, a front port of the left side of the proportional valve is connected with an oil inlet pipeline, the oil inlet pipeline is connected with a normally-open second ball valve, and a front port of the right side of the proportional valve is connected with an oil return pipeline; the emergency lifting valve is a three-position four-way electromagnetic valve, a front end opening in the left side of the emergency lifting valve is connected with the oil inlet pipeline, and a front end opening in the right side of the emergency lifting valve is connected with the oil return pipeline; a rodless cavity of the lifting hydraulic cylinder is connected with left rear ports of the proportional valve and the emergency lifting valve through pipelines, and a rod cavity of the lifting hydra