Double circuit double accumulator hydraulic system and hydraulic compactor

Abstract

The invention provides a double-circuit double-energy accumulator hydraulic system which comprises a lifting oil cylinder, a control valve group piece, two accumulators and a plurality of oil pipes, wherein two rod chamber hydraulic fluid ports are formed in the rod chamber of the lifting oil cylinder, two rodless cavity hydraulic fluid ports are formed in the rodless cavity of the lifting oil cylinder, the control valve group piece is respectively connected with the two rod chamber hydraulic fluid ports, the control valve group piece is respectively connected with the two rodless cavity hydraulic fluid ports through the two accumulators, the two ends of one accumulator is respectively connected with the control valve group piece and one rodless cavity hydraulic fluid port, and the two ends of the other accumulator are respectively connected with the control valve group piece and the other rodless cavity hydraulic fluid port. The invention further provides the hydraulic tamper using the double-circuit double- accumulator hydraulic system. According to the invention, the maximal tamping effect is reached, the work efficiency is improved, the energy consumption is lowered, and a hydraulic radiator and a hydraulic oil tank are protected.

Description

technical field [0001] The invention relates to the field of hydraulic devices, in particular to a double-circuit double-accumulator hydraulic system and a hydraulic compactor. Background technique [0002] The tamping machine is an important tamping machine in the field of construction machinery, and it is widely used in foundation treatment. Such as figure 1 As shown, the existing tamping machine includes a chassis, a frame, a hydraulic device, a hammer, a hammer cushion, a tamping plate and a pile cap seat, the chassis is connected with the frame, the hydraulic device is arranged on the frame, and the hammer is respectively connected with the frame and the hydraulic pressure. The device is connected, the tamping plate is arranged under the frame corresponding to the position of the hammer, the hammer cushion is arranged on the tamping plate, and the pile cap seat is connected with the tamping plate. At present, the tamping machine adopts a hydraulic device with a single...

AI Technical Summary

Problems solved by technology

Since the maximum drop speed of the hammer can be close to 5 m / s, and the flow rate of the oil port A (small cavity) of the rod chamber of the oil cylinder can reach up to about 700 liters / minute, the single-channel oil discharge resistance of the prior art is very large and cannot be timely The oil is returned to the rodless cavity (large cavity) of the oil cylinder, which reduces the hammer's descending speed and reduces the compacting capacity

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