Center filament tensioning device for steel strand monofilament spraying

Abstract

The invention relates to a center filament tensioning device for steel strand monofilament spraying. The tensioning device comprises a portal, an inner guiding wheel I, an inner guiding wheel II, a center filament tensioning wheel, a tensioning wheel support, a supporting frame, a transmission shaft, synchronous chain wheels, a large tray, a small tray and a spindle head, wherein filament wires can penetrate through the large tray, the small tray and the spindle head, a supporting bearing is installed on the portal, the large tray is arranged in the supporting bearing, six guiding wheel fixing frames provided with external steel wire guiding wheels are arranged on the large tray, at least one guiding wheel fixing frame is connected with the spindle head through a connecting plate, the small tray is connected with the spindle head, the spindle head is installed on the supporting frame through a bearing, a small tray guiding wheel is arranged on the supporting frame, the small tray is placed in the small tray guiding wheel, the tensioning wheel support is connected between the large tray and the spindle head through the bearing, the center filament tensioning wheel, the inner guiding wheel I and the inner guiding wheel II are respectively installed on the tensioning wheel support, and the transmission shaft is connected with the spindle head through a chain and the synchronous chain wheels. The tensioning device has the advantages of being simple in structure, small in size, low in manufacturing cost and convenient to maintain.

Description

technical field [0001] The invention relates to a central wire tensioning device used in the steel strand monofilament spraying process. Background technique [0002] With the continuous development of prestressed engineering technology and the continuous expansion of application fields, steel strands are an important part of prestressed concrete structures and bridge structures, and their anti-corrosion performance plays a decisive role in the service life of structures. Therefore, The anti-corrosion requirements of the structure for steel strands are getting higher and higher, and the general anti-corrosion technology can no longer meet the current needs. In order to prevent the aging and corrosion of steel strands, enhance the safety and stability of buildings, and meet the high requirements and standards of prestressed engineering, epoxy-coated steel strands entered the construction market in the 1980s. Nowadays, epoxy-coated steel strands are widely used in long-term a...

AI Technical Summary

Problems solved by technology

[0005] However, in the domestic market, there are few manufacturers capable of producing monofilament-coated epoxy-coated prestressed steel strands, and the equipment is scarce. The central wire tensioning equipment used in the steel strand monofilament spraying process has a complex structure and a large volume, accounting for The land area is large, the cost is high, the maintenance and repair costs are high, and the production cost of epoxy steel strands also increases

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