A multi-purpose single arm portal crane

Abstract

The invention discloses a multi-purpose single-arm gantry crane, comprising a gantry, a traveling mechanism is arranged below the gantry, and a turntable capable of rotating relative to the gantry is arranged above the gantry. The main points of the technical solution are Yes, there is a plate beam type column above the turntable, a balance block is arranged on the rear side, a lifting arm is hinged on the lower end and the front side of the plate beam type column, and a boom frame is arranged at the front end of the lifting arm. Lifting pulley, the upper end of the plate beam type column is provided with a column lifting pulley, a luffing mechanism is arranged between the middle part of the plate beam type column and the lifting arm, and the turntable is provided with In the machine room, a wire rope is wound around the hoisting drive device, and the wire rope goes around the column hoisting pulley and the boom hoisting pulley in turn and is connected with a hoisting device at the rear end.

Description

【Technical field】 [0001] The invention relates to a working equipment, more specifically a single arm portal crane. 【Background technique】 [0002] The single-arm portal crane is a typical loading and unloading equipment for the port's general wharf. The existing single-arm portal crane's jib support point is set on the turntable. In order to meet the lifting height requirements, the turntable and the mechanism set on the turntable must be With the rise of the metal structure, this leads to the rise of the center of gravity of the single-arm portal crane, which affects the rationality of the metal structure of the crane and the overall stability of the crane. At the same time, the herringbone frame structure of the existing single-arm portal crane also limits the winding of the hoisting wire rope from the hoisting drum to the hoisting pulley block of the herringbone frame to pass through a reverse winding pulley, so that the hoisting wire rope Reverse bending occurs during ...

AI Technical Summary

Problems solved by technology

[0002] The single-arm portal crane is a typical loading and unloading equipment for the port's general wharf. The existing single-arm portal crane's jib support point is set on the turntable. In order to meet the lifting height requirements, the turntable and the mechanism set on the turntable must be And the metal structure rises, which leads to the rise of the center of gravity of the single-arm portal crane, which affects the rationality of the metal structure of the crane and the overall stability of the crane

At the same time, the herringbone frame structure of the existing single-arm portal crane also limits the winding of the hoisting wire rope from the hoisting drum to the hoisting pulley block of the herringbone frame to pass through a reverse winding pulley, so that the hoisting wire rope Reverse bending occurs during the winding process, which greatly aggravates the bending fatigue of the wire rope, shortens the service life of the wire rope, and is basically not suitable for crane grab operations

Just because the existing single-arm portal cranes have the above-mentioned problems, the existing single-arm portal cranes are generally only used for container and general cargo loading and unloading operations.

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