Abstract: An auxiliary energy-accumulation and flow-enhancement device for a hydraulic system of a concrete pump is provided. The device includes a connection oil passage 1 having an input end P and an output end B. A check valve 11 is disposed in the oil passage between the input end P and the output end B, and an energy accumulator 10 is connected to the oil passage between the check valve 11 and the input end P Pressure oil enters from the input end P, the energy accumulator accumulates energy, and power oil is output through the check valve 11. An oil passage pressure of the output end B controls an energy accumulation state of the energy accumulator 10. In the course of reversing the oil passage of a distribution valve of a working oil passage device, the auxiliary energy-accumulation and flow-enhancement device releases a corresponding amount of power oil for supplementation.

Abstract: A boost valve for a concrete pump lubricating system is provided. The boost valve includes a valve body 1, a valve core 2, and a spring 3. An axial section of the valve core 2 is -shape, and a rear cylinder 22 of the valve core 2 is connected to a check valve 21; a front valve cavity 15 of the valve body 1 is connected to a check valve 13, and an air orifice 12 and a grease distributing orifice 11 are opened in the valve body 1. When a pressure of an outlet is lower than a pressure of an inlet, lubrication grease is discharged from check valves (21, 13); when the pressure of the outlet is higher than that of the inlet, the lubrication grease pushes the valve core 2 to move rightwards, and the lubrication grease in the cavity 15 is pressurized and then discharged from the check valve 13; when the valve core 2 moves rightwards to pass the grease distributing orifice 11, the lubrication grease at.

Abstract: An auxiliary energy-accumulation and flow-enhancement device for a hydraulic system of a concrete pump is provided. The device includes a connection oil passage 1 having an input end P and an output end B. A check valve 11 is disposed in the oil passage between the input end P and the output end B, and an energy accumulator 10 and an overflow valve 12 having an output end T are connected to the oil passage between the check valve 11 and the input end P. Pressure oil enters from the input end P, the energy accumulator accumulates energy, and power oil is output through the check valve 11. An oil passage pressure of the output end B controls an energy accumulation state of the energy accumulator 10. The overflow valve 12 sets an overflow pressure, and overflowed hydraulic oil flows back to an oil tank from an output end T.