Flywheel energy storage device for electro-hydraulic hammer main hydraulic pump motor

Abstract

The invention discloses a flywheel energy storage device for an electro-hydraulic hammer main hydraulic pump motor. The flywheel energy storage device comprises a main hydraulic pump, the main hydraulic pump motor and an energy storage flywheel. A rotary shaft of the main hydraulic pump motor is provided with the energy storage flywheel. When the main hydraulic pump motor is in a non-load state, the flywheel stores energy; when a hammer head is lifted upwards, the main hydraulic pump motor and stored energy released by the energy storage flywheel are combined to drive the hydraulic pump to provide hydraulic oil, so that the hammer head is lifted to build gravitational potential energy, and meanwhile, gas in a gas chamber located above a piston rod of the hammer head is compressed; and when moving downwards to strike a forged piece, the hammer head falls through the self weight of the hammer head and the rebound force in the gas chamber above the piston rod of the hammer head, superimposed kinetic energy of the hammer head is formed, and in the process that the hammer head moves downwards to strike the forged piece, the main hydraulic pump motor conducts energy storage on the energy storage flywheel. According to the flywheel energy storage device, the power configuration amount of the main hydraulic pump motor is decreased by 50% or so, and thus the flywheel energy storage device has the advantages of being small in equipment investment, good in electricity saving effect, low in noise, small in impact current, few in fault quantity and the like.

Description

technical field [0001] The invention relates to an energy storage device, in particular to a flywheel installed on the motor shaft of the main hydraulic pump of the electro-hydraulic hammer for energy storage, and through the release of the flywheel energy and the superimposed transmission effect of the motor, the power of the main hydraulic pump motor is reduced. power. It belongs to the technical field of energy storage applications. Background technique [0002] Electro-hydraulic hammer is a new type of energy-saving and environment-friendly forging equipment. Because of its advantages of fast response, high reliability and convenient operation, it is recognized as an advanced forging equipment at home and abroad. The lifting and hitting forms of the hammer head of the electro-hydraulic hammer are various, but generally it is inseparable from the hydraulic power, that is, the power is obtained by driving the main hydraulic pump through the electric motor to obtain power ...

AI Technical Summary

Problems solved by technology

However, when we carefully analyze the actual working conditions of the entire working process of the electro-hydraulic hammer, and carefully study the energy consumption curve of the hammer head rising and falling in a working cycle, it is not difficult to find that the energy consumed by the traditional electro-hydraulic hammer varies greatly under different working conditions. Large, the peaks and valleys of energy consumption within a working cycle are also very obvious

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