Double-super cantilever type electromagnetic gantry crane with large base distance

Abstract

The invention discloses a double-super cantilever type electromagnetic gantry crane with a large base distance. The double-super cantilever type electromagnetic gantry crane comprises main beams, wherein the main beams are supported with support legs, and a small vehicle is arranged on the main beams. The small vehicle comprises a vehicle frame. A hoisting mechanism and a walking mechanism are arranged on the vehicle frame. A rotary electromagnetic hanging frame is connected to the hoisting mechanism of the small vehicle through a steel wire rope, and the double-super cantilever type electromagnetic gantry crane is characterized in that each support leg is a bracket of which at the least a top end is provided with a cross beam; the two main beams are respectively fixed on bottom surfaces of cross beams which are fixed on top ends of the support legs. Sections of the main beams are right trapezoids, upper end surfaces of the main beams which are narrow are contacted with the bottom surfaces of the cross beams on the top ends of the support legs, and inclined surfaces of the two main beams are oppositely arranged. Support plates are arranged at lower parts of the inclined surfaces of the main beams, rails are arranged on the support plates, and the small vehicle is arranged on the rails. Trusses are arranged on tops of the main beams, and crossed pulling rods are respectively arranged between the trusses and the support legs. A relationship between a span S of the crane and cantilevers L of the main beams is L is larger than 1.4S, and the relationship between the base distance B and height H from the crane to a bottom part of the beam is B is greater than or equal to 1.75H. The crane has a large cantilever and a large base distance, and can directly hoist steel products to a storage yard in span through inner parts of the support legs.

Description

technical field [0001] The invention specifically relates to an electromagnetic gantry crane, in particular to an electromagnetic gantry crane with double super cantilever and large base distance. Background technique [0002] Electromagnetic gantry crane is a device that uses electromagnetic principles to move steel objects. [0003] The technical solution of prior art 1: a general-purpose electromagnetic gantry crane. [0004] Structural type: This kind of crane is mainly composed of main girder, outriggers, trolley, electromagnetic hanger, etc., which can meet the handling of steel plates or steel materials. The relationship between the cantilever L of this kind of crane and the span S is generally: L=(0.25~0.35)S, that is, the cantilever is generally smaller than the span; secondly, the base distance of this kind of crane is small, because the height H of the beam bottom of this kind of crane is mostly in the ten In the range of several meters, the base distance B is g...

AI Technical Summary

Problems solved by technology

[0007] 1. The cantilever is small, which cannot be used for loading and unloading steel at the wharf. The feature of loading and unloading steel at the wharf with a gantry crane is that the cantilever is large enough to drive the trolley to the center of the barge

[0008] 2. The base distance is small. In order to avoid the steel hitting the outrigger, the steel needs to turn when passing the outrigger, and the spreader needs to increase the rotation action, which reduces the working efficiency

[0013] 1. This type of crane has high cost, various mechanisms, complex structure, poor reliability, poor stability of the whole machine, and needs to add counterweight and other facilities, and the weight of the whole machine is relatively heavy

[0014] 2. The working efficiency of this type of crane is low, and the crane must make a rotary motion to transport the steel from the water side to the land side, which lengthens the lifting path of the steel, prolongs the time of one working cycle, and lowers the working efficiency

[0015] 3. The safety of this type of crane is low when it is in slewing motion, and the slewing motion will cause a large inertial force when braking, and the structural parts of the crane are under severe stress, so the structure needs to be strengthened to increase the crane's self-weight; in addition, the slewing motion causes the steel to shake Large amount, which will lengthen the alignment time during loading and unloading, and increase the corresponding danger caused by shaking

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