Assembled continuous lifting jack for finish-rolling threaded steel bar vertical columns

Abstract

The invention discloses an assembled continuous lifting jack for finish-rolling threaded steel bar vertical columns. The common prestress tensioning jack (1) is fixed on the finish-rolling threaded steel bar vertical columns (2) through a jack tail clamping plate (4) and a jack bearing steel plate (5); an upper tool anchor (8) is fixed on the head of a piston of the common prestress tensioning jack (1) through bolts; a lower tool anchor (9) is positioned on the lower part of the common prestress tensioning jack (1) and fixed on a lower tool anchor fixing steel plate (6) through an anchor plate clamping ring (15), a lower tool anchor plate clamping ring and a lower tool anchor fixing steel plate connection sleeve (16); threaded sleeves (10) are sleeved outside the finish-rolling threaded steel bar vertical columns (2) and positioned between the jack bearing steel plate (5) and the lower tool anchor fixing steel plate (6); a guide safety anchor (7) is positioned above the common prestress tensioning jack (1) and fixed with an upper guide safety anchor fixing steel plate (3) through bolts; and the upper guide safety anchor fixing steel plate (3) is fixed on the finish-rolling threaded steel bar vertical columns (2).

Description

technical field [0001] The invention relates to equipment for performing continuous lifting in civil construction engineering, and belongs to the field of construction machinery equipment in civil construction engineering. Background technique [0002] The "lifting method" is a construction method in which components or structures are continuously lifted obliquely or vertically to a certain height position by a lifter in the construction of civil engineering construction. What kind of lifting equipment is used is the key to the application of the lifting method. At present, the lifting equipment that is widely used in the construction of the lifting method at home and abroad is a special hydraulic continuous lifting jack developed on the basis of the prestressed steel strand anchor system and hydraulic jack tensioning equipment. The principle is to use the output flow and oil pressure of the hydraulic pump station to drive the jack cylinder to extend and shrink, and to ancho...

AI Technical Summary

Problems solved by technology

Currently known continuous lifting equipment, except for conventional hoists, electric or manual chain hoists, etc., the recognized lifting equipment with large lifting capacity and safe and reliable lifting equipment is the special continuous lifting hydraulic jack produced by the manufacturer. This set of lifting equipment can only be used for lifting construction. It cannot be generally used in prestressed steel strand tensioning in prestressed engineering construction, etc.

In addition, the purchase of special continuous lifting equipment is expensive and the utilization rate is low, so one machine cannot be used for multiple purposes. Especially when a multi-point jack cluster is required for overall lifting, the investment cost of the lifting equipment is expensive, which brings great difficulties to the undertaking project

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