A kind of multiple cam pump

Abstract

The invention discloses a multi-connected cam pump, belonging to a mechanical rotor pump. According to the technical scheme, the multi-connected cam pump comprises a driving cam (1), driven cams (2), a driving gear (3), a driven gear (4), a pump body (7) and a flow distribution disc (8), wherein the driving cam (1) and the driving gear (3) operate coaxially; the driven cams (2) and the driven gear (4) operate coaxially; the four driven cams (2) are simultaneously matched with the driving cam (1) to form four groups of parallel cam pumps; the flow distribution disc (8) can be used for finishing flow distribution of each group of the cam pump; and a plurality of oil discharging openings are formed in the part, corresponding to each group of the cam pump, on the pump body (7) to form a multi-connected pump with one oil suction opening and a plurality of oil discharging openings. The multi-connected cam pump has the advantages that the displacement is great and fluid properties of a plurality of outlets have good consistency, and is applied to a multi-loop hydraulic system with high requirements on consistency or synchronism.

Description

Technical field [0001] The invention relates to a multi-connected lobe pump, belonging to the field of mechanical rotor pumps, and particularly relates to the technical scope of the multi-connected lobe pump. Background technique [0002] Hydraulic transmission is widely used in various industrial and agricultural production industries. As the power source of the hydraulic transmission system, the hydraulic pump's output characteristics have a great influence on the control accuracy of the hydraulic system. In construction machinery, agricultural and forestry machinery, special military vehicles and other traveling devices, or mechanical equipment with high synchronization requirements, hydraulic transmission accounts for an increasing proportion. If these devices or equipment use a single pump to drive multiple motors or hydraulic cylinders, they need to connect valves in series on the oil circuit of each actuator. The debugging of the equipment is cumbersome, problems are pron...

AI Technical Summary

Problems solved by technology

If these devices or equipment adopt the method of single-pump oil supply to drive multiple motors or hydraulic cylinders, it is necessary to adjust the valves in series on the oil circuit of each actuator. The one-to-one oil supply method of the motor usually adopts multiple pumps. At this stage, the structure of the multiple pumps is "through-shaft type", that is, one shaft connects multiple pumps in series. The defect of this multiple pump is: The number of pumps should not be too many, the output characteristics of each pump are poor in consistency, and the adjustment is cumbersome, which brings inconvenience to system control and maintenance

Cam pumps have the advantages of large displacement, high volumetric efficiency, low vibration and noise, long life, and good overall performance. However, they are often used in gas, viscous liquid, and material transportation, and have not been used in hydraulic transmission.

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