Combined screw hoist

Abstract

The invention discloses a hydraulic gate hoist, and in particular relates to a combined screw hoist. The combined screw hoist mainly comprises a power machine, a variable transmission system, lead screws, nuts, a machine base and a hand crank, wherein, the lead screws are driven by a drive component to rotate. The combined screw hoist is characterized in that a plurality of lead screws are coaxially and horizontally arranged along the direction of the gate on the machine base at the center of a plurality of pairs of lifting points, wherein, the lead screws are conjoined screws, namely two lead screws which are coaxially connected together and are opposite in rotation directions of threads, and optical levers are arranged in the middle of two threads of the conjoined screws; and the two threads are equipped with the nuts, the nuts are respectively equipped with mechanical devices, and the mechanical devices are connected with the gate through mechanical facilities and connection piecesmatched with the mechanical devices. By utilizing the combined screw hoist, the porous gate can be lifted up and down by one power machine and one main variable transmission system, which obviously lowers the manufacturing cost of single machine; and for medium and small-sized hydraulic gates which are not frequently opened and closed, the combined screw hoist can fully replace an expensive winchhoist, thus achieving great economic significance.

Description

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AI Technical Summary

Benefits of technology

This patented combination screw hoist solves problems with longer screws used for lifting heavy loads due to its increased size but also has certain technical benefits such as improved workability or reduced costs compared to other types like electric winches.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the design for screw-type lifts used on industrial sites that have large openings without requiring excessive maintenance costs due to longer leadscrews and reduced efficiency caused by direct connection between the rotating parts and the guide rails. Additionally, there may be issues where regular shutdowns can cause these components to become stuck together during operation causing them to break down quickly overall.

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