The present invention is composed of the upper body, the slide plate, the lower plate and the supporter in the milking machine body, by the rotation of the screw by the motor, the pressing plate is integrally screwed to the bottom of the moving head, and the pressing plate is radially That formed the flow path,;A milking tank lift control device is installed between the top plate and the milking barrel by spring and shaft. The upper part of the racket is rotatably inserted in the shaft, and the spring is always pushed inward in the middle part. The inclined position is formed by bulging inwardly facing pieces to be formed when the movement of the head and slack, and the mounting jaw at the bottom of the racket,;The lower surface of the piston installed in the hydraulic cylinder is wider and the upper surface is narrower, and the piston support plate is screwed on the upper surface of the hydraulic cylinder, but an upwardly inclined drain groove is formed on the inner surface of the oil supply pipe of the hydraulic cylinder so that the drain groove when the piston rises. The hydraulic oil is drained to the inclined portion of the piston, and the upper surface of the piston is inserted into the through hole of the piston support plate, respectively, so that it is supported. To provide a four-stock hydraulic milking machine that can.
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