Variable-stroke high-and-low-beam travelling crane for crane machine room

Abstract

The invention discloses a variable-stroke high-and-low-beam travelling crane for a crane machine room. The variable-stroke high-and-low-beam travelling crane comprises an upper track beam, a lower track beam, an electric hoist and a plurality of running blocks, wherein the plurality of running blocks include first running blocks and second running blocks; the upper track beam and the lower track beam are in sliding fit through the first running blocks; the lower track beam and the electric hoist are in sliding fit through the second running blocks; the upper track beam comprises a movable beam and a fixed beam; the fixed beam is located in the machine room; the machine room is located on a turntable of a gate seat crane; the right end of the fixed beam is fixed on an upright post; the upright post is arranged on the turntable of the gate seat crane; the left end of the fixed beam is supported by a support beam located on the turntable and connected with the right end of the movable beam through a hinge; and the left end of the movable beam extends out of the machine room and is detachably connected with the upright post of the gate seat crane through a digging line. The travelling crane is convenient to operate and high in loading capacity, has a large outreach and can be completely fixed in the machine room when not used.

Description

technical field [0001] The invention belongs to the technical field of hoisting equipment, and in particular relates to a variable stroke high and low beam crane used in a crane machine room. Background technique [0002] The hoisting mechanism, luffing mechanism and slewing mechanism of the crane are usually installed in the machine room, and the machine room is higher than the ground. Or reducer and other equipment for maintenance, and the weight of motor or reducer and other equipment is relatively large, they must be hoisted to the ground with special lifting equipment for maintenance. At present, two schemes are usually adopted: one is to set up a skylight on the roof of the machine room, and use large lifting equipment to lift the equipment to be repaired from the skylight; The hoist lifts the equipment from the lifting hole to the ground. For the first solution, other lifting equipment must be borrowed, and due to the limitation of the size of the skylight, it is di...

AI Technical Summary

Problems solved by technology

For the first solution, other lifting equipment must be borrowed, and due to the limitation of the size of the skylight, it is difficult for the hook of the lifting equipment to reach a position far from the skylight; for the second solution, due to the limitation of the turning radius of the turntable tail, The layout space is limited, and opening a hanging hole that can pass through large equipment such as reducers will inevitably increase the activity space in the machine room, and the bottom of the machine room often has structures such as round platforms and door frames, which are easy to collide with during the lifting process of equipment

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