Cableway hydraulic driving system with pressure adjusted by energy accumulator

Abstract

The invention discloses a cableway hydraulic driving system with speed adjusted by an energy accumulator. The cableway hydraulic driving system consists of an electric machine, a variable-capacity oil pump, a motor and a hydraulic driving system, wherein the electric machine is connected with the variable-capacity oil pump; high-pressure oil ports A and B of the variable-capacity oil pump are connected with oil ports A and B of the motor; a hydraulic speed adjusting system comprises the variable-capacity oil pump; a filling pump opening PS in the variable-capacity oil pump is connected with a filter; the filter is connected with a throttling orifice of a pressure limiting valve bank; the throttling orifice of the pressure limiting valve bank communicates with the pressure limiting valve bank and a port P of a solenoid directional valve respectively; an oil return port of the pressure limiting valve bank, a port T of the solenoid directional valve and a pilot control port X2 of the variable-capacity oil pump are connected with an oil tank T; a port B of the solenoid directional valve is connected with the energy accumulator and a pilot control port X1 of the variable-capacity oil pump respectively through throttling orifices of the solenoid directional valve; and an oil inlet T1 and an oil outlet T2 of the variable-capacity oil pump communicate with the oil tank T. The cableway hydraulic driving system has the beneficial effects that the system is simple to control and is stable and reliable; the number of control valve banks and matched electrical control are reduced, costs are saved, and fault rate is reduced; and safety protection is complete.

Description

technical field [0001] The invention relates to a hydraulic drive system for a cableway, in particular to a hydraulic drive system for a cableway using an accumulator for speed regulation. Background technique [0002] The speed control system in the traditional hydraulic drive system is to adjust the control pressure through the electric proportional valve or the proportional handle, and then input the control oil to the control port of the hydraulic control variable oil pump through the reversing valve group to realize the change of the displacement of the variable pump and thus change The size of the output oil volume is adjusted. Since this control method uses a high-precision proportional valve and needs to be matched with electrical control, there are many fault points and maintenance points, which increases the difficulty of equipment maintenance and increases the cost. Contents of the invention [0003] The purpose of the present invention is to increase or decrea...

AI Technical Summary

Problems solved by technology

Since this control method uses a high-precision proportional valve and needs to be matched with electrical control, there are many fault points and maintenance points, which increases the difficulty of equipment maintenance and increases the cost.

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