HYDRAULIC TURNING SYSTEM, CONSTRUCTION MACHINE AND METHOD OF STEERING CONTROL Russian patent published in 2024 - IPC B66C23/86 

FIELD: hoisting cranes.

SUBSTANCE: hydraulic turning system comprises a first pipeline configured to transport hydraulic oil, a second pipeline configured to transport hydraulic oil, motor (5) provided with first oil hole (51) and second oil hole (52), first oil hole (51) is connected to the first end of the first pipeline, and second oil hole (52) is connected to the first end of the second pipeline, proportional safety valve (3) provided with an inlet and an outlet, input of proportional safety valve (3) is connected to the first pipeline and the second pipeline, respectively, and the output of proportional safety valve (3) is communicated with the first pipeline and the second pipeline, respectively, first one-way valve (2) located between the output of proportional safety valve (3) and the first pipeline, first one-way valve (2) is configured to direct the output of proportional safety valve (3) into the first pipeline, and second one-way valve (6) located between the output of proportional safety valve (3) and the second pipeline, second one-way valve (6) is configured to direct the outlet of the proportional safety valve (3) into the second pipeline.

EFFECT: possibility to avoid overpressure during turning and improvement of smoothness of turning process.

10 cl, 1 dwg