Half-portal crane with lifting trolley and cantilever beam hanging balance weight

Abstract

The invention discloses a half-portal crane with a lifting trolley and a cantilever beam hanging balance weight. A half portal is composed of an end beam, two main beams and a support frame; walking boards are arranged on the outer side faces of the two main beams, and the outer portion of one walking board is connected with a supporting power frame; rails at the upper portions of the two main beams are connected with the lifting trolley and a running trolley; the lifting trolley is provided with a lifting-hook craning lifting device; the outer sides of the two main beams are each provided with a steel rail with the rail face formed downwards, and the steel rails are parallel to the rails; the two sides of the running trolley are connected with two reverse rolling wheel devices respectively, and the reverse rolling wheel devices are hooked and overlapped on the steel rails to run; a rotating mechanism is arranged on the running trolley; the lower end of a derrick shaft in the rotatingmechanism is connected with a cantilever member, and the upper end of the derrick shaft in the rotating mechanism is connected with a safety rule; the balance weight is hung at the end, close to a hanging base, of a cantilever beam in the cantilever member, the other end, close to a hanging base, of the cantilever beam in the cantilever member is connected with an electric hoist, the electric hoist can horizontally move along the cantilever beam, and the cantilever beam is located at the lower portions of the main beams, can extend out of a workshop to work, and can rotate on the horizontal plane.

Description

Technical field [0001] The application relates to the field of cranes, in particular to a semi-gantry crane with a lifting trolley and a cantilever beam hanging counterweight. Background technique [0002] Existing bridge cranes are used in enterprise workshops. In some workshops, many machine tools and equipment are arranged for processing and production. Products and raw materials need to be transported to the next workshop or other departments in real time; the crane hook on the workshop is suspended from the trolley For hoisting goods, the trolley can only run back and forth along the double beams of the crane, and the crane can only run back and forth along the cart rails on the span columns on both sides of the workshop, so that the range of goods that the crane hook can lift is within the two cart rails of the workshop In the plane enclosed by the two end points, when the goods on the edge of this plane need to be hoisted, the hook will be inclined, and the goods far away ...

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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