Heavy-load piston pump

Abstract

The invention provides a heavy-load piston pump. A left pump unit is arranged at the left end in an inner cavity of a pump housing, a right pump unit is arranged at the right end in the inner cavity of the pump housing, and the pump housing is used for liquid feeding and liquid discharging through the left pump unit and the right pump unit; the left pump unit comprises a left pump body coaxially arranged at the left end in the inner cavity of the pump housing, and the right pump unit comprises a right pump body coaxially arranged at the right end in the inner cavity of the pump housing; and aleft pump core is coaxially arranged in the left pump body, a right pump core is coaxially arranged in the right pump body, and the left pump core and the right pump core are connected through a firstrotating synchronous device which allows the left pump core and the right pump core to keep synchronous rotation and can relatively independently move in the axial direction. According to the heavy-load piston pump, a guide rail is fixedly connected with the left pump core or the right pump core, so that the guide rail becomes a moving part; and compared with the prior art that a roller is used as the moving part, as the guide rail is used as the moving part, a large-load bearing can be selected, so that the heavy-load piston pump is capable of bearing a large load, and therefore the heavy-load piston pump can be used as a heavy-load pump.

Description

technical field [0001] The invention belongs to the field of energy and power components, in particular to a heavy-duty piston pump. Background technique [0002] Hydraulic pumps, as energy and power components, have played a decisive role in the performance, efficiency and application fields of hydraulic or fuel systems, especially axial piston pumps with high pressure, high speed and large flow characteristics, in the development and application of high hydraulic power density Requirements to become a symbol of modern hydraulic technology. [0003] The pressure level of the axial piston pump can reach 35-40MPa at present, the maximum flow rate can reach 1000L / min, the maximum speed applied to construction machinery can reach 4500r / min, and it can also realize various electro-hydraulic variable control. The traditional axial piston pump is limited by its own working principle. Each plunger can only absorb and discharge oil once when the transmission shaft rotates one revol...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present application provides a heavy-duty piston pump to solve the problem that the two-dimensional duplex axial piston pump in the prior art cannot be used as a heavy-duty pump, and realize that it can be used as a heavy-duty pump while working efficiently The beneficial effect of

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