Semi-portal cantilever crane with reverse-rolling-wheel travelling trolley and exposed drive

Abstract

This application discloses a semi-gantry cantilever crane with anti-roller running trolley and open transmission, including a half-gantry composed of an end beam, two main beams, and a leg frame; the leg frame includes a ground beam ;The outer side of one of the main girders is equipped with a walking platform and a pick-up frame, and a hanging cable is installed on the pick-up rack; the running trolley is connected to the track above the main girder; rails are set on the outside of the main girder; both sides of the running trolley are connected The anti-roller device is hooked to run on the rail; the running trolley adopts a "three-in-one" reducer and a driving device connected with a floating shaft; the running trolley is equipped with a rotating mechanism with open gear transmission; the boom in the rotating mechanism The shaft is connected with the cantilever member; the cantilever member is equipped with a rotation limit device; the electric hoist is installed on the cantilever member and can move back and forth along the cantilever beam horizontally; the cantilever beam is under the main beam and can rotate; the cantilever end connection position of the cantilever beam is adjustable car gear.

Description

technical field [0001] The present application relates to the field of cranes, in particular to a semi-gantry jib crane with a trolley running on reverse rollers and an open transmission. 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...

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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