Double-jaw grab bucket device of crane

Abstract

The invention relates to a double-jaw grab bucket device of a crane and particularly relates to a grab bucket device for loading and unloading mineral powder particles with the high water content. Theinvention provides a solution which is simple in structure and convenient to operate in order to overcome two defects that in the prior art, when a grab bucket of a crane is used for loading and unloading high-water-content mineral powder, material taking is insufficient, and unloading is not clear. For an improved device, on the basis of a grab bucket in the prior art, a controllable driving rolling bar set with a stirring function is additionally arranged between the grab bucket and powder, the binding power of the loaded and unloaded powder and a friction coefficient between the powder andthe grab bucket are reduced, and the improved device is characterized in that the grab bucket device comprises an open-close type grab bucket, a motor, a portable power source, a transmission chain wheel, a chain and the driving rolling bar set. Compared with the prior art, the grab bucket device is simple in structure and convenient to operate, the binding power of the powder and the friction coefficient between the powder and the grab bucket can be effectively reduced, and loading and unloading operation efficiency of the crane is improved.

Description

technical field [0001] The utility model relates to a double-jaw plate grab device for a crane, specifically a double-jaw plate grab device for loading and unloading mineral powder particles with high water content, and belongs to the field of hoisting machinery. Background technique [0002] Port portal cranes, referred to as portal cranes for short, are the most widely used equipment for loading and unloading operations in port enterprises, and are used for loading and unloading various general cargo and bulk cargo. When loading and unloading bulk cargo, such as coal, bauxite ore powder, nickel ore powder, iron powder, etc., the tools need to be equipped with grab buckets. The grab is a device that can automatically grab and unload bulk cargo or long materials by opening and closing the jaws. There are many types of grabs. According to the number of jaws, it can be divided into double-jaw grabs and multi-jaw grabs. fight. For powdery bulk cargo, especially bauxite ore po...

AI Technical Summary

Problems solved by technology

When the moisture content of the mineral powder is high, reaching 30%-50%, two problems are prone to occur: one is that when the double-jaw plates are closed to grab mineral powder goods, the adhesive force of the mineral powder is strong, so that the double-jaw plates cannot be inserted into the material. The capacity of the grab bucket to grab the goods is less than 30%, and it cannot be operated at full bucket. The material in the bucket, there is residual material in the grab bucket, which means that the unloading is not clear

The above two problems seriously affect the efficiency of loading and unloading operations

After reviewing relevant domestic and foreign literature in the past three years, no technical solutions and patent information to solve this problem have been found.

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