Single-plunger three-function high-pressure electric pump based on regular triangle cam

Abstract

The invention discloses a single-plunger three-function high-pressure electric pump based on a regular triangle cam. The single-plunger three-function high-pressure electric pump comprises a cam, a plunger and a roller bearing. A transmission shaft is arranged at the center position of the cam, one end of the plunger is located in a pump body, and the roller bearing is hinged to the other end of the plunger and located between the plunger and the cam. A lock spring is connected between the plunger and the outer wall of the pump body. The side wall of the pump body is connected with an oil discharging valve, and the bottom wall of the pump body is connected to an oil tank through an oil suction valve. A regular triangle disc-shaped cam structure is adopted, and the three-function oil suction and discharging manner is achieved. The motion law in which the denary polynomial function curve and the multi-arc section function curve are effectively combined is adopted as the outline curve ofthe regular rectangle cam. The problem about centrifugal force of eccentric wheels or common cams and the problem of the low pump volume efficiency due to too slow oil suction and discharging valve opening and closing are solved, and the beneficial effects that the volume efficiency is high, flexible impacts are weak, and vibration and noise are low are achieved. The alignment roller push rod technology is adopted, and the beneficial effects that abrasion is little, and the service life is long are achieved.

Description

technical field [0001] The invention relates to an electric pump specially used for the power part of a heavy-duty cab overturning hydraulic system, which can also be used in the general industrial hydraulic field of high pressure and small flow, and specifically relates to a single plunger three-action high-pressure electric pump based on a regular triangular cam. Background technique [0002] Hydraulic transmission has been widely used in engineering because of its advantages of high power density, wide speed range, small size and self-lubrication. The hydraulic pump is the core component of the hydraulic transmission, and its quality determines the performance of the entire hydraulic system. At present, the lifting system of the heavy truck cab uses hydraulic transmission technology. It uses a single-piston single-acting high-pressure electric pump with a flat-bottomed push rod eccentric wheel structure. It has the advantages of simple structure and easy use. It has been...

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Problems solved by technology

[0005] The present invention aims at the disadvantages of high rotational speed (up to 5000r / min), large centrifugal force, large impact and vibration, large recoil flow rate, low volumetric efficiency, and single-acting single-acting pump with a single-plunger eccentric wheel structure with a general flat-bottomed push rod. , proposed a single-plunger three-acting high-pressure electric pump based on a regular triangular cam, aiming to reduce the speed of the pump, reduce shock and vibration, reduce friction and wear, improve the volumetric efficiency of the pump, and prolong the service life of the pump and its driving motor. service life

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