US 5,645,395 AGranted

Building crane apparatus climbable on building walls

OwnerHsin-Tsung Huanginventor

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Abstract

A building crane apparatus includes: a gantry crane slidably held on a pair of guiding rails longitudinally juxtapositionally mounted on two side walls of a building, and an elevating device secured on the building side walls for lifting the gantry crane from on the building walls to subsequently raise the crane corresponding to the building height under construction to provide a crane climbable on the building walls for eliminating an additional supporting base for erecting the crane in order for unobstructedly moving the crane in the working area.

Claims8

Dependent claims

A crane apparatus comprising:

a crane means slidably held on a base rail means mounted on a building, said crane means including a pair of gantry stands disposed on two walls of the building each said stand having a roller means secured in a bottom groove recessed in a bottom of each said stand to be engageable with a rail of the base rail means, a girder transversely connected between the two gantry stands and horizontally positioned at an upper portion of the crane means, a trolley having a hoisting unit provided on the trolley slidably held on the girder for hoisting purpose, and at least one catching member formed on an inside surface of each said gantry stand and engageable with a head portion of a lifting elbow member of the elevating means to be lifted by the elbow member of the elevating means;
said base rail means including a pair of rails longitudinally disposed on the two walls of the building, each said rail defining a rail axis at a longitudinal center of each said rail and having a horizontal track on an upper portion of the rail for rotatably engaging the roller means of the crane means, and a plurality of brackets longitudinally distributed and secured on each said wall of the building for fixing each said rail on each said bracket;
and
a pair of elevating means fixed on the building and operatively lifting the crane means from a low standing position of the building to a high standing position of the building, each said elevating means including a pair of vertical columns parallelly vertically secured on each said wall of the building, at least a pair of lifting elbow members transversely secured on two opposite end portions of a frame for lifting each said catching member formed on each said gantry stand of the crane means, a pair of climbing leg members, each said leg member pivotally secured to each said lifting elbow member and normally inclinedly supported on each said vertical column and operatively extended as driven by a pair of driving means secured on the frame, a locking means normally locking each said lifting elbow member on each said vertical column, and a leg controller for locking and unlocking the climbing leg member on and from the vertical column, whereby upon an extending of the climbing leg member to raise the lifting elbow member, the gantry stand with the catching member engaged with the lifting elbow member will be lifted to raise the crane means corresponding to the rising of the building under construction.

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Dependencies are inferred from the claim text.

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Abstract

A crane apparatus comprising:

a crane means slidably held on a base rail means mounted on a building, said crane means including a pair of gantry stands disposed on two walls of the building each said stand having a roller means secured in a bottom groove recessed in a bottom of each said stand to be engageable with a rail of the base rail means, a girder transversely connected between the two gantry stands and horizontally positioned at an upper portion of the crane means, a trolley having a hoisting unit provided on the trolley slidably held on the girder for hoisting purpose, and at least one catching member formed on an inside surface of each said gantry stand and engageable with a head portion of a lifting elbow member of the elevating means to be lifted by the elbow member of the elevating means;
said base rail means including a pair of rails longitudinally disposed on the two walls of the building, each said rail defining a rail axis at a longitudinal center of each said rail and having a horizontal track on an upper portion of the rail for rotatably engaging the roller means of the crane means, and a plurality of brackets longitudinally distributed and secured on each said wall of the building for fixing each said rail on each said bracket;
and
a pair of elevating means fixed on the building and operatively lifting the crane means from a low standing position of the building to a high standing position of the building, each said elevating means including a pair of vertical columns parallelly vertically secured on each said wall of the building, at least a pair of lifting elbow members transversely secured on two opposite end portions of a frame for lifting each said catching member formed on each said gantry stand of the crane means, a pair of climbing leg members, each said leg member pivotally secured to each said lifting elbow member and normally inclinedly supported on each said vertical column and operatively extended as driven by a pair of driving means secured on the frame, a locking means normally locking each said lifting elbow member on each said vertical column, and a leg controller for locking and unlocking the climbing leg member on and from the vertical column, whereby upon an extending of the climbing leg member to raise the lifting elbow member, the gantry stand with the catching member engaged with the lifting elbow member will be lifted to raise the crane means corresponding to the rising of the building under construction.

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