Ultrahigh-pressure automatic stretching pump

Abstract

The invention discloses an ultrahigh-pressure automatic stretching pump, and relates to the technical field of hydraulic pressure. The ultrahigh-pressure automatic stretching pump comprises a control box, a motor, a low-pressure pump, a high-pressure pump, a pilot electromagnetic valve, an ultrahigh-pressure control valve, a pressure transducer and a remote control handle; the motor is connected with the low-pressure pump and the high-pressure pump; the pilot electromagnetic valve controls connection and disconnection of an oil way between a low-pressure oil way and a control oil port of the ultrahigh-pressure control valve; the pressure transducer is arranged on an output oil way; the ultrahigh-pressure control valve includes a valve body, a control oil port, a piston, a piston rod and a return spring; a control cavity and a pressure relief cavity are formed in the valve body; two ends of the piston rod are separately positioned in the control cavity and the pressure relief cavity; the piston rod in the control cavity is provided with a control piston and the return spring; and a pressure relief piston is arranged on the piston rod in the pressure relief cavity. The ultrahigh-pressure automatic stretching pump adopts a double-speed design, is high in automation degree and efficiency, and can realize remote control.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to an ultra-high pressure automatic stretching pump. Background technique [0002] The stretching pump is suitable for electric power, petroleum, chemical industry, steel, mining, cement, transportation, machinery, military industry and other fields. It is mainly used in conjunction with the bolt tensioner to provide power for the bolt tensioner. At present, the hydraulic pumps used in supporting stretchers in my country are mainly divided into two types: manual pumps and electric pumps. Manual pumps have been gradually replaced by electric pumps due to their low efficiency and poor precision. At present, electric pumps used in supporting stretchers in China They are all manually controlled, and have problems such as poor precision, low efficiency, cumbersome operation, and insufficient intelligence. Contents of the invention [0003] In order to overcome the above-mentioned sh...

AI Technical Summary

Problems solved by technology

At present, the hydraulic pumps used in supporting stretchers in my country are mainly divided into two types: manual pumps and electric pumps. Manual pumps have been gradually replaced by electric pumps due to their low efficiency and poor precision. At present, electric pumps used in supporting stretchers in China They are all manually controlled, and have problems such as poor precision, low efficiency, cumbersome operation, and insufficient intelligence.

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