Three chamber powered hydraulic pressure jars

The utility model discloses a three chamber powered hydraulic pressure jars, this pneumatic cylinder include earrings, front end housing, upper end cover, cylinder, one -level piston rod, second grade piston rod and earrings down, self -aligning bearing that this pneumatic cylinder passes through both ends with the support axle articulated and with the cooperation of pneumatic cylinder support, go up the earrings and pass through the screw and be connected with the one -level piston rod, have sealing washer and guide ring between one -level piston rod and the upper end cover for prevent that hydraulic oil from leaking and guaranteeing the concertina movement that stabilizes of one -level piston rod, finally realize three chamber powered hydraulic pressure jars's full -automatic meticulous position control control. The utility model discloses the occasions such as power cylinder of lifting up the medium -and -large -sized hydraulic equipment of trade such as hydro -cylinder and building that can be used to feed cylinder, robotic arm on the lathe. The utility model discloses can realize the fine adjustment, power is sufficient.