Movable arm potential energy recovery device and excavator

• Main Authors: LI CHENGYU, WANG FEI, ZHANG XITIAN, ZHAO JINGUANG, CHE WENCHAO
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DREDGING; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; FOUNDATIONS; HEATING; HYDRAULIC ENGINEERING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SOIL SHIFTING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model relates to the technical field of engineering machinery, in particular to a movable arm potential energy recovery device and an excavator. The movable arm potential energy recovery device comprises a movable arm oil cylinder, a main valve and a generator set, a rodless cavity and a rod cavity of the movable arm oil cylinder are communicated with the main valve, the generator set comprises a power generation unit and an electric energy storage unit, the electric energy storage unit is electrically connected with the power generation unit, and the power generation unit is arranged on an oil way where the rodless cavity of the movable arm oil cylinder is connected with the main valve. The power generation unit and the hydraulic oil act to mutually convert potential energy and electric energy, and the electric energy storage unit is used for storing and releasing electric energy. When the movable arm descends, the hydraulic oil acts on the generator set so that the generator set can convert pote