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[CN 201820544520.2] Pull rod pre-tightening device of hydraulic press
[CN 201820544520.2] Title of Pull Rod Pre-tightening Device for Hydraulic Press: Application Number of Pull Rod Pre-tightening Device for Hydraulic Press: CN 201820544520.2 Applicant: Diss Hydraulic Industry (Kunshan) Co., Ltd. Application Date: 2018-4-17 Patent Type: Utility Model The utility model discloses a pull rod pre-tightening device for hydraulic press. The hydraulic press includes an upper beam and a pull rod vertically connected to the upper beam, and the upper shaft side of the pull rod also penetrates outside the upper beam; the tie rod pre-tightening device includes a pre-tightening nut, a pre-tightening cylinder, a piston ring, a pre-tightening gasket and a fixing plate, wherein the positioning sleeve of the pre-tightening nut is connected to the outer side of the upper shaft of the tie rod, and the pre-tightening cylinder is installed On the upper beam, the piston ring is slidably installed in the pre-tightening cylinder, and at the same time the piston ring is also connected to the positioning sleeve outside of the pre-tightening nut; the pre-tightening washer can be tightly inserted between the bottom side of the pre-tightening nut and the upper cross beam, the fixing plate is installed on the top surface of the pull rod, and at the same time, the fixing plate is detachably locked and fixedly connected with the top side of the pre-tightening nut; The tie rod pre-tightening device occupies a small space, which is convenient for the position arrangement, installation, maintenance and processing of the entire hydraulic press system.
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