Power device for EHA control

Abstract

The utility model relates to a power device for EHA control, which is characterized in that a servo motor is connected with an oil pump block body through an oil pump end cover, a cylinder body is arranged in the pump block body, a plunger is arranged at one end of the cylinder body, the other end of the cylinder body is in close clearance fit with an oil distribution shaft to rotate, and the plunger is assembled in a radial hole of the cylinder body; the plunger ball head is meshed with the bearing, rotates along with the radial direction of the cylinder body and is used for absorbing and discharging oil; one end of the oil pump block body is provided with an oil distribution shaft, and the other end of the oil pump block body is provided with a pressurizing oil tank; the servo motor is connected with and drives the cylinder body to rotate through a coupler. The power device adopts a radial plunger pump structure of a plunger / cylinder pair, has a highly integrated design, and effectively reduces the size and the weight. And an overflow valve is arranged to protect the oil cylinder on the load side. The hydraulic lock is arranged, so that the position of the oil cylinder is bidirectionally locked. The pump system is supplemented with oil in time by arranging a pressurizing oil tank, an oil supplementing reversing valve and the like.

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