Semi portal cantilever crane with operation trolley and lower cross beam

Abstract

This application discloses a semi-gantry cantilever crane with a running trolley and a lower beam. The end beam of the half-gantry is composed of a balanced end beam and an intermediate connecting rod; the lower beam on the leg frame of the half-gantry is composed of two balanced The ground beam and the intermediate connecting beam are composed; the end beam and the lower beam are equipped with trolley running devices; the two main beams are equipped with tracks above and connected to the running trolley; the outer sides of the main beam are equipped with side rails and safety hooks; the running trolley There is a rotating mechanism on the top; the boom shaft in the rotating mechanism is connected with the thrust bearing, bearing A and bearing B; the thrust bearing is connected inside the bearing seat, and the bearing A and bearing B are respectively connected to the two sides of the bearing seat through the fixed cover and the flange cover. end; the output shaft of the driving device is connected to the pinion gear, the pinion gear is meshed with the large gear, the large gear is connected to the upper part of the boom shaft, and the lower part of the boom shaft is connected to the cantilever member; the electric hoist is installed on the cantilever beam; the cantilever beam is placed on two Below the main girder and can be rotated.

Description

technical field [0001] The present application relates to the field of cranes, in particular to a semi-gantry jib crane with a running trolley and a lower beam. Background technique [0002] Existing bridge cranes are used in enterprise workshops. Some workshops are equipped with many machine tools for processing and production. Products and raw materials need to be transported to the next workshop or other departments in real time; the hooks of the cranes in the workshop are hung from the trolley. For hoisting goods, the trolley can only run back and forth along the double girders of the crane, and the crane can only run back and forth along the cart rails on the cross columns on both sides of the workshop, so that the range of goods that the crane hook can lift is within the distance between the two cart rails in the workshop. Within the plane surrounded by the two ends, when the goods at the edge of the plane need to be hoisted, the hook will be pulled obliquely, and the ...

AI Technical Summary

Problems solved by technology

[0002] Existing bridge cranes are used in enterprise workshops. Some workshops are equipped with many machine tools for processing and production. Products and raw materials need to be transported to the next workshop or other departments in real time; the hooks of the cranes in the workshop are hung from the trolley. For hoisting goods, the trolley can only run back and forth along the double girders of the crane, and the crane can only run back and forth along the cart rails on the cross columns on both sides of the workshop, so that the range of goods that the crane hook can lift is within the distance between the two cart rails in the workshop. Within the plane surrounded by the two ends, when the goods at the edge of the plane need to be hoisted, the hook will be pulled obliquely, and the items farther away from this plane (such as outside the workshop door, outside the span) cannot be hoisted. At this time, it can only be transferred with the help of other transportation equipment. Usually, the car drives into the workshop to lift the goods under the hook. Go to the hook to hand over the goods, and some set up a special cantilever crane at the workshop door (or workshop aisle) to transfer and dispatch the goods outside the workshop, first hoist the goods into the place where the crane hook of the workshop can reach , and then the cargo is hoisted by the crane to other stations in the workshop. The existing bridge crane used in this working condition cannot directly transfer the cargo with the workshop next door, and must use other transportation equipment to schedule operations, which brings considerable inconvenience. It also wastes manpower and material resources

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