Hydraulic system and tower crane

• Main Authors: XIANG XIAOHUI, CHEN QINGZHUAN
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• 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 invention discloses a hydraulic system and a tower crane. The hydraulic system comprises a plurality of hydraulic cylinders (1) and a hydraulic medium supply mechanism, wherein the hydraulic medium supply mechanism is connected to rod cavities and rodless cavities of the hydraulic cylinders (1) through hydraulic pipelines; high-pressure balance valves (17) are arranged on rodless cavity branches, connected to the hydraulic cylinders (1), of the hydraulic medium supply mechanism correspondingly, and the control ends of the high-pressure balance valves (17) are connected with the rod cavities of the corresponding hydraulic cylinders (1); and balance branches are connected to the portions, between the high-pressure balance valves (17) and the hydraulic cylinders (1), of the rodless cavity branches, and the balance branches communicate with one another. The balance branches communicate with the rodless cavity branches with the high-pressure balance valves so that pressures in the rodless cavity branches can b