Single rod equal area double acting hydraulic cylinder capable of balancing weight
A technology of double-acting hydraulic cylinder and balancing weight, applied in the direction of fluid pressure actuating device, etc., can solve the problems of poor stiffness, slender hydraulic cylinder, complex structure, etc., and achieve the effects of high stiffness, high vibration frequency and simple structure
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[0010] As shown in the drawings, the present invention includes a piston rod 2, a cylinder 3, an air storage tank or an accumulator 4, a constant pressure controller 5, an end cover 8, an inner plunger 9, and a three-position four-way electro-hydraulic servo / proportional valve 10. Hydraulic source 11, piston 12; the lower end surface of the cylinder 3 is connected to the end cover 8, the center of the end cover 8 in the cylinder 3 is equipped with an inner plunger 9 with a through hole 13 in the center, and one end of the hollow piston rod 2 The upper end of the cylinder 3 is sleeved outside the inner plunger 9, and a piston 12 is installed on one end surface of the hollow piston rod 2. It is a sealed sliding fit with the cylinder 3 hole, the sealed sliding fit between the outer cylindrical surface of the piston 12 and the inner cylindrical surface of the cylinder 3, and the sealed sliding fit between the inner circular hole of the piston 12 and the outer cylindrical surface of...
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