Automatic pressure maintaining system and control method

• Main Authors: JING JUNQING, XU MING, QI ZHENHONG, SUN JIAN, DAI JINMING
• Format: Patent
• Language: Chinese; English
• Published: 21.06.2024
• 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 automatic pressure maintaining system comprises a main system oil way, the main system oil way is connected with a rod cavity and a rodless cavity of a working hydraulic cylinder, the main system oil way is rigidly connected with a motor and a hydraulic pump, and the oil outlet end of the hydraulic pump is connected with a two-position three-way hydraulic control reversing valve. The oil outlet end of the two-position three-way hydraulic control reversing valve is connected with a rodless cavity of the hydraulic cylinder and the hydraulic oil tank, a one-way valve is arranged between the two-position three-way hydraulic control reversing valve and the rodless cavity of the hydraulic cylinder, and a sequence valve is arranged between the hydraulic control end of the two-position three-way hydraulic control reversing valve and the rodless cavity of the hydraulic cylinder. And an overflow valve is arranged between the hydraulic pump and the hydraulic oil tank. According to the automatic pressure maintaining