Double hydraulic system and hydraulic machine

Abstract

The invention discloses a hydraulic machine and a double hydraulic system. The double hydraulic system comprises a first route of hydraulic system body and a second route of hydraulic system body. The double hydraulic system is of a logic linkage structure, and therefore the first route of hydraulic system body is used when the hydraulic machine is in the idle stroke (fast advancing) and the return stroke (fast retreating), and the large-flow rapid movement is achieved; high-pressure hydraulic oil is directly driven by the second route of hydraulic system body when the hydraulic machine is in the feeding stroke, and therefore the high-pressure system pressure can be directly obtained by the hydraulic machine, the higher working force can be obtained, and the overall weight of the hydraulic machine is reduced at a large proportion. By means of the double hydraulic system, the hydraulic machine can be applied under the power of 40 Mpa or higher, for instance, 40 Mpa, 55 Mpa, 70 Mpa, 100 Mpa, 120 Mpa, 150 Mpa and 200 Mpa, the overall weight of the hydraulic machine can be greatly reduced, all types of use efficiency, such as the running speed, of the hydraulic machine can be kept, and the production efficiency can be ensured.

Description

technical field [0001] The present application relates to a hydraulic machine, in particular to a hydraulic machine capable of high-pressure operation and a hydraulic system thereof. Background technique [0002] A hydraulic press is a machine that uses liquid as a working medium and is made according to Pascal's principle to transfer energy to realize various processes. [0003] A hydraulic press is a machine that uses hydrostatic pressure to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing process and pressing forming process, such as: forging, stamping, cold extrusion, straightening, bending, flanging, sheet drawing, powder metallurgy, pressing and so on. Its principle is to use the mechanical transmission of liquid pressure made by Pascal's law, and there are many types. Of course, the usage is also varied according to needs. [0004] The hydraulic press is generally composed of three parts: the main engine, the power syste...

AI Technical Summary

Problems solved by technology

[0007] However, due to the limitations of technology and materials, it has not been found that the hydraulic press controlled by the direct drive of the pressure pump valve can be applied to the hydraulic system exceeding 35Mpa

[0008] Although there are individual hydraulic machines with a system pressure exceeding 35Mpa, they are all realized by superchargers, which brings about the disadvantages of slow pressure, complex structure, and the inability to significantly reduce self-weight and energy consumption.

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