Screw transmission hoist with cylinder body and push rod

Abstract

Disclosed is a screw transmission hoist with a cylinder body and a push rod. The screw transmission hoist is mainly composed of a frame, a reducing motor, a coupler, a hollow shaft reducer, the cylinder body, a screw, a bearing nut, the hollow push rod and a hoist head. The frame is fixed onto a concrete foundation, and the cylinder body and the hollow shaft are connected through a cylinder body flange and vertically fixed onto the frame; the hollow shaft reducer and the reducing motor horizontally arranged on the frame are connected through the coupler; the upper end of the screw penetrates the hollow shaft reducer and is locked through locking nuts and vertically suspended in the center of the cylinder body; the bearing nut and the hollow push rod are connected into a whole, arranged between the screw and the inner wall of the cylinder body and threadedly matched with the screw to vertically move up and down; the lower end of the hollow push rod extends out of the cylinder body and is connected with the hoist head. A screw transmission pair is high in anti-corrosion and anti-dirt performance and strong in lubricating effects and prolongs the service life. The push rod can be chromeplated or sprayed with industrial ceramics, so that the anti-corrosion effects of the push rod can be enhanced, so that the screw transmission hoist with the cylinder body and the push rod can be applied to various water resource and hydropower projects.

Description

technical field [0001] The invention relates to a gate hoist in water conservancy and hydropower projects, in particular to a screw drive hoist with a cylinder body and a push rod. Background technique [0002] At present, hydraulic hoist, winch type hoist, and screw type hoist are mainly used for opening and closing plane gates in water conservancy and hydropower projects. In the occasions where the gate needs closing force but the water column force cannot be used, hydraulic hoist or screw hoist is usually selected. However, the screw of the screw hoist is exposed to the air or soaked in water, and the lubricating oil on the surface of the screw is easily polluted, which affects the lubrication effect. In the coastal salt spray environment, the screw is very easy to rust; at the same time, the rise of the screw when the gate is opened affects the building structure. Or landscape; In addition, the screw hoist has a slow opening and closing speed, and it is difficult to use...

AI Technical Summary

Problems solved by technology

However, the screw of the screw hoist is exposed to the air or soaked in water, and the lubricating oil on the surface of the screw is easily polluted, which affects the lubrication effect. In the coastal salt spray environment, the screw is very easy to rust; at the same time, the rise of the screw when the gate is opened affects the building structure. Or landscape; in addition, the screw hoist has a slow opening and closing speed, and it is difficult to use in some occasions that require a high opening and closing speed

Hydraulic hoists are difficult to apply in some projects due to their high cost, operation management, maintenance and maintenance.

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