Balanced cantilever feeding apparatus

Abstract

Balanced cantilevered feeding apparatus for depositing and removing load through opening in building wall. Rotatable jib mounted on or beside building defines longitudinal jib axis. Fly beam hangs from distal hoisting locations of jib along lateral axis crossing vertical projection of longitudinal jib axis. First hoisting element hanging from fulcrum hoisting location of first jib portion coupled to fly beam fulcrum location of fly beam. Second hoisting element hanging from counterbalance hoisting location of second jib portion coupled to fly beam counterweight location of fly beam, such that lateral distance between fly beam fulcrum location and fly beam counterweight location corresponds to lateral distance between fulcrum hoisting location and counterbalance hoisting location, such that fly beam fixedly aligned laterally of jib. Cantilever of fly beam securely receives load. When jib rotated for depositing and removing load through opening, cantilever extends from fly beam fulcrum location toward opening.

Description

[0001] BALANCED CANTILEVER FEEDING APPARATUS

[0002] TECHNICAL FIELD

[0003] The present disclosure relates generally to construction and building structures, and more particularly, to positioning of a load through an opening of a building.

[0004] BACKGROUND

[0005] Construction is the process of forming buildings and structures. Cranes, and particularly tower cranes, are commonly used in construction of buildings to move and transport materials in the construction site. Tower cranes are adapted to lift heavy loads to various heights. Buildings are generally constructed with framing and floors leaving an open floor gap at the external building envelop in between the floors and later, when enveloping the building with an external shell, the shell is commonly featured with portals, such as openings for panels or windows and the like. It is often required to lift, position, insert, offload, collect and pull bulky objects and heavy loads through the open floor gap or the portal, such as a vacant window opening, to various levels of a wall of a tall building under construction.

[0006] However, cumbersome, difficult to handle and elaborated maneuvers are often required for positioning the load within a confined or covered location, especially during windy conditions. A common technique to insert loads into a building, despite the substantial accompanied effort, time and expenses, an outward extension of the floor is built. Such an extension is built in order to offload materials at a specific level or floor by vertically lowering a load onto the floor extension, disconnected from the crane hooks, and thereafter moved into the building for use. Other solutions involve extending the hoisting of a beam of an overhead crane. The hoisting beam, which extends from its fulcrum such that the load is placed at one end of the beam, for allowing maneuvering, positioning and insertion of the load through the portals into the different stories of the building. Such beams usually incorporate a balancing counterweight, which requires its displacement along the beam to balance against the particular load which may differ from a hoisting task to another. Such solutions still require difficult and time-consuming maneuvers, and consumes the invaluable resources of the general hoisting apparatus, typically a tower crane, at the expense of its use for other hoisting tasks.

[0007] SUMMARY

[0008] In accordance with an aspect of the present disclosure, there is thus provided a balanced cantilevered feeding apparatus for depositing and removing of a load through an opening in a building wall. The apparatus includes a rotatable jib configured to be mounted on or beside the building and defining a longitudinal jib axis. The apparatus further includes a fly beam hanging from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal jib axis. A first hoisting element hanging from a fulcrum hoisting location of a first jib portion is coupled to a fly beam fulcrum location of the fly beam, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion is coupled to a fly beam counterweight location of the fly beam, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib. The fly beam is configured to connect to a counterweight at the fly beam counterweight location. The fly beam includes a cantilever extending from the fly beam fulcrum location away from the fly beam counterweight location, the cantilever configured for securely receiving the load. When the jib is rotated for depositing and removing the load through the opening, the cantilever extends from the fly beam fulcrum location toward the opening.

[0009] In some embodiments, the apparatus includes a support module for stabilizing the apparatus to the building or proximate to the building wall. The support module may include a frame for securing to the building wall or a building column and at least one diagonal support beam for supporting the module in a balanced position. The support module may include a tower crane mast mounted to the building wall, building column, and / or supported on the ground. The apparatus may include a slewing unit mounted on the support module for horizontally rotating the jib.

[0010] In some embodiments, the jib is mounted at a proximal side thereof on the support module, and a distal side of the jib protrudes from the vertical projection of the building wall beside the opening. In some embodiments, the jib includes a bifurcated jib including a first jib arm and a second jib arm, separated from the first jib arm, where the first jib portion is at a distal end of the first jib arm, and the second jib portion is at a distal end of the second jib arm, where the first jib arm and the second jib arm are pivotally mounted to the support module and operational for turning to retractably split apart for increasing the lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location.

[0011] In some embodiments, the first hoisting element and the second hoisting element are configured to change hoist height.

[0012] In some embodiments, the fly beam is movable along the jib.

[0013] In some embodiments, the fly beam is retractably extendable to accommodate a change of the lateral distance "f" between the two distal hoisting locations.

[0014] In some embodiments, the cantilever is retractably extendable for changing the distance between the fly beam fulcrum location and a load securing location in the cantilever.

[0015] In some embodiments, the apparatus includes a load securing member mounted on the cantilever at a load securing location, the load securing member operational for engaging and hoisting the load, for allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the jib to insert or retract the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member.

[0016] In some embodiments, the apparatus includes a counterweight coupled with the fly beam at the counterweight location.

[0017] In some embodiments, when the jib is rotated, the distal side of the jib protrudes from the vertical projection of the building wall beside the opening, and is moved along an arcuate path external to the building, spanning between (i) a distal arc location, for depositing, removing and hoisting a load away from the building wall, and (ii) a proximal arc location, for depositing and removing the load through the opening in the building wall.

[0018] In some embodiments, the jib is a tiltable luffing jib, configured to adjust an inclination thereof.

[0019] In some embodiments, the jib is retractably extendable.

[0020] In some embodiments, the jib includes a distal rotating beam which is rotatably mounted to the distal side of the jib, where the first jib portion and the second jib portion are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis, where rotation of the beam changes an angle between the longitudinal jib axis and the lateral axis. The distal rotating beam may be retractably extendable for changing the lateral distance between the two distal hoisting locations.

[0021] In accordance with another aspect of the present disclosure, there is thus provided an apparatus that includes: a support module for stabilizing the apparatus to the building or proximate to the building wall; a rotatable jib defining a longitudinal jib axis, the jib mounted at a proximal side thereof on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening; a slewing unit mounted on the support module for horizontally rotating the jib to move the distal side of the jib along an arcuate path spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall; two hoisting elements respectively hanging from two distal hoisting locations of the job spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the two hoisting elements including a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion; a fly beam hanging from the two distal hoisting locations of the jib, where the first hoisting element is coupled to a fly beam fulcrum location of the fly beam, and the second hoisting element is coupled to a fly beam counterweight location of the fly beam, such that a lateral distance "e" between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance "f" between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, the fly beam configured to connect to a counterweight at the fly beam counterweight location, the fly beam including: (i) a cantilever extending from the fly beam fulcrum location and away from the fly beam counterweight location, the cantilever configured for securely receiving the load, where when the jib is rotated by the slewing unit to move the distal side of the jib along the arcuate path toward the proximal arc location, the cantilever extends from the fly beam fulcrum location toward the opening; and (ii) a load securing member mounted on the cantilever at a load securing location positioned outwardly from the fly beam fulcrum location and operational for engaging and hoisting the load, allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the distal side of the jib to insert or retract a cantilever portion, which includes the load securing location, through the opening, into and out of the building, together with the load if secured to the load securing member, the apparatus including a counterweight, coupled with the fly beam at the fly beam counterweight location.

[0022] In accordance with a further aspect of the present invention, there is provided a method for depositing and removing of a load through an opening in a building wall. The method includes mounting a rotatable jib on or beside the building, where the jib defines a longitudinal jib axis. The method further includes hanging a fly beam from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal jib axis, and positioning, hoisting and balancing the fly beam by two hoisting elements hanging from the two distal hoisting locations, by coupling a fly beam fulcrum location of the fly beam to a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and coupling a fly beam counterweight location of the fly beam to a second hoisting element hanging from a counterbalance hoisting location of a second jib portion, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, the fly beam including a cantilever extending from the fly beam fulcrum location and away from the fly beam counterweight location, where when the jib is rotated for depositing and removing the load through the opening, the cantilever extends from the fly beam fulcrum location toward the opening. The method further includes coupling a counterweight to the fly beam at the fly beam counterweight location. The method further includes securing or releasing the load to or from the cantilever. The method further includes rotating the jib to insert or extract the cantilever through the opening into the building, together with the load if secured to the cantilever. The method further includes depositing or removing the load in or from the building.

[0023] In some embodiments, the method includes stabilizing the apparatus to the building or proximate to the building wall by a support module. In some embodiments, the stabilizing includes securing the support module to the building wall by a frame and supporting the frame in a balanced position by at least one diagonal support beam. In some embodiments, the support module includes a tower crane mast and the stabilizing includes mounting the mast to the building wall and / or supporting the mast on the ground.

[0024] In some embodiments, the mounting includes mounting the jib at a proximal side thereof on the support module, where a distal side of the jib protrudes from the vertical projection of the building wall beside the opening. In some embodiments, the rotating includes horizontally rotating the jib by a slewing unit which is mounted on the support module.

[0025] In some embodiments, the positioning, hoisting, and balancing includes changing hoist height by the two hoisting elements.

[0026] In some embodiments, the positioning, hoisting, and balancing includes moving the fly beam along the jib.

[0027] In some embodiments, the method further includes extending and retracting the fly beam to accommodate a change of the lateral distance "f" between the two distal hoisting locations.

[0028] In some embodiments, the jib includes a bifurcated jib including a first jib arm and a second jib arm separated from the first jib arm, where the first jib portion is at a distal end of the first jib arm, and the second jib portion is at a distal end of the second jib arm, where the first jib arm and the second jib arm are pivotally mounted to the support module and operational for turning to retractably split apart for increasing the lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location.

[0029] In some embodiments, the method includes extending and retracting the cantilever for changing the distance between the fly beam fulcrum location and a load securing location in the cantilever.

[0030] In some embodiments, the method includes mounting a load securing member on the cantilever at a load securing location, the load securing member operational for engaging and hoisting the load and allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the jib, and the method further includes inserting or retracting the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member, by moving the fly beam, by rotating the jib.

[0031] In some embodiments, the method includes coupling a counterweight with the fly beam at the fly beam counterweight location.

[0032] In some embodiments, the rotating includes moving the distal side of the jib to protrude from the vertical projection of the building wall beside the opening, and to move along an arcuate path external to the building, spanning between (i) a distal arc location, for depositing, removing and hoisting a load away from the building wall, and (ii) a proximal arc location, for depositing and removing the load through the opening in the building wall.

[0033] In some embodiments, the method includes tilting the jib to change its inclination, where the jib includes a tiltable luffing jib.

[0034] In some embodiments, the method includes retracting and extending the jib.

[0035] In some embodiments, the method includes changing an angle between the longitudinal jib axis and the lateral axis, by rotating a distal rotating beam which is rotatably mounted to the distal side of the jib, where the first jib portion and the second jib portion are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis.

[0036] In some embodiments, the method includes retracting and extending the distal rotating beam for changing the lateral distance between the two distal hoisting locations. In accordance with another aspect of the present invention, the method includes the procedures of: stabilizing a support module to the building or proximate to the building wall; mounting a jib, defining a longitudinal jib axis, at a proximal side thereof on the support module, where a distal side of the jib can protrude from the vertical projection of the building wall beside the opening; hanging two hoisting elements respectively from two distal hoisting locations of the jib spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the two hoisting elements comprising a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion; hanging a fly beam from the two distal hoisting locations, and positioning, hoisting, and balancing the fly beam by the two hoisting elements hanging from the two distal hoisting locations, by coupling a fly beam fulcrum location of the fly beam to a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and coupling a fly beam counterweight location of the fly beam to a second hoisting element hanging from a counterbalance hoisting location of a second jib portion, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, where a cantilever of the fly beam extends beyond the fly beam fulcrum location and away from the fly beam counterweight location. When the fly beam is moved to approach the building, the cantilever extends from the fly beam fulcrum location toward the opening; coupling a counterweight to the fly beam at the fly beam counterweight location; hoisting and releasing the load, by a load securing member secured to the cantilever at a load securing location positioned outwardly from the fly beam fulcrum location; positioning, hoisting, and balancing the fly beam by rotating the jib horizontally with a slewing unit configured to move the distal side of the jib along an arcuate path spanning between (i) a distal arc location, for depositing, removing and hoisting the load in a distal location distanced away from the building wall, and (ii) a proximal arc location, for depositing, removing and hoisting the load withing the building, e.g., wherein the cantilever and the load are inserted and retracted through the opening; depositing the load in an internal location in the building or removing the load from the building by rotating the distal side of the jib to respectively insert or retract a cantilever portion which includes the load securing location, the load securing member, and a hoisted load, if secured to the load securing member, and respectively releasing the load when laid in the internal location from the load securing member for depositing the load in the building or securing the load to the load securing member for removing the load from the building; and removing the load from an external location outside the building wall or depositing the load in the external location by rotating the distal side of the jib to the distal location, and respectively securing the load to the load securing member for removal of the load from the external location or releasing the load when laid in the external location from the load securing member for depositing of the load in the external location.

[0037] In accordance with another aspect of the present invention, there is provided a spreadable hoisting apparatus including a support module for stabilizing the apparatus to the building or proximate to the building wall, a slewing unit, and a radial bifurcated jib. The slewing unit is mounted on the support module, for horizontally rotating the jib with respect to the support module. The slewing unit is located on the building or beside the building in close proximity to the building. The radial bifurcated jib is mounted at its proximal end to, and radially extending from, the slewing unit, such that an uninterrupted horizontal rotation of the jib outside the building, when disposed in close proximity beside the building, is allowed. The jib includes two pivotal arms, each arm is pivotally mounted at its proximal side to the slewing unit and includes a distal hoisting location at its distal side. The arms are operational to pivotally split apart for spreading the two respective distal hoisting locations and to pivotally converge for gathering the two respective distal hoisting locations.

[0038] BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present disclosure will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which:

[0040] Figures 1 A to 1 C illustrate views of a balanced cantilevered feeding apparatus mounted to a building undergoing construction, constructed and operative in accordance with an embodiment of the present invention. Figure 1 A is a schematic perspective view of an embodiment of the apparatus featuring a luffing jib mounted to a supporting tower which is secured to a column of a building wall, and featuring a cantilever of a hoisted fly beam. Figure 1 B is a schematic perspective view of the jib of the apparatus. Figure 1 C is a side view of the apparatus demonstrating the tilting of the luffing jib in different inclinations;

[0041] Figure 1 D is a side view of an embodiment of a fly beam constructed and operative in accordance with the invention in conjunction with the apparatus of Figures 1 A-1 C, featuring load and counterweight moving means;

[0042] Figure 1 E is a side view of an embodiment of a fly beam constructed and operative in accordance with the invention in conjunction with the apparatus of Figures 1 A-1 C, featuring a retractably extendable fly beam.

[0043] Figures 2A and 2B illustrate views of an apparatus constructed and operative in accordance with an embodiment of the present invention, featuring a climbing tower crane mounted to a column of a building undergoing construction and a jib having a spreading distal breadth. In Figure 2A the jib posture is almost erect and hoists a balanced feeding fly beam with its cantilever inserted into the building through an opening in the wall. In figure 2B, the jib in the same posture hoists a single hoisting assembly.

[0044] Figures 3A and 3B illustrate views of an apparatus constructed and operative in accordance with an embodiment of the present invention, featuring direct mounting to a column of a building undergoing construction and a jib having a spreading distal breadth. In Figure 2A the jib posture is inclined and hoists a balanced feeding fly beam with its cantilever inserted into the building through an opening in the wall. In figure 2B, the jib posture is almost erect and hoists a balanced feeding fly beam with its cantilever inserted into the building through an opening in the wall in a location closer to the building column.

[0045] Figures 4A and 4B illustrate views of an apparatus constructed and operative in accordance with an embodiment of the present invention, mounted to a wall disposed internally respective of the outer shell of a building undergoing construction and a jib having a spreading distal breadth. In Figure 2A the jib posture is almost erect and hoists a balanced feeding fly beam with its cantilever inserted to the top floor through an opening in the vertical projection of the building wall. In figure 2B, the jib in the same posture hoists a single hoisting assembly.

[0046] Figures 5A-5D are schematic views of a balanced feeding apparatus mounted to a column of building undergoing construction, featuring a retractably extendable jib and a distal rotating beam, constructed and operative in accordance with an embodiment of the present invention. In Figure 5A the jib is shown in an extended mode, and is rotated into a ready posture for picking up or releasing a load inside the building, wherein the lateral axis of the distal rotating beam is positioned at a right angle relative to the vertical projection of the longitudinal axis of the jib. In Figure 5B the jib of Figure 5A is shown a partially extended mode and positioned for picking up or releasing a load inside the building, wherein the lateral axis of the distal rotating beam is positioned at an acute angle relative to the vertical projection of the longitudinal axis of the jib. Figure 5C is a top view of the apparatus in the posture of Figure 5B. Figure 5D is a side view of the apparatus in the posture of Figure 5B;

[0047] Figures 6A-6D are schematic views of components of a balanced feeding apparatus which can be mounted to a building undergoing construction, featuring a retractably extendable and foldable luffing jib, constructed and operative in accordance with an embodiment of the present invention. Figure 6A is a side view of the apparatus wherein the jib is folded in a hibernate mode. Figure 6B is a side view of the apparatus wherein the jib is expanded in an operation mode. Figure 6C is a top view of the jib when expanded in an operation mode. Figure 6D is a distal front view of a distal lateral beam of the jib and a fly beam hanging thereon;

[0048] Figures 7A to 7E are schematic views of a multipurpose apparatus for mounting to a building undergoing construction, incorporating a multipurpose bifurcated jib, constructed and operative in accordance with an embodiment of the present invention. Figure 7A illustrates a perspective view of the apparatus wherein arms of the bifurcated jib are laterally converged and longitudinally expanded. Figure 7B illustrates a perspective view of the apparatus wherein peripheral arms of the bifurcated jib are longitudinally contracted and laterally spread apart to broaden the distal end for hoisting a balanced cantilevered fly beam. Figure 3B illustrates a top view of the apparatus wherein peripheral arms of the bifurcated jib are laterally split. Figure 7C is a zoomed in top view of the expansion mechanism of the apparatus wherein arms of the bifurcated jib are laterally split. Figure 7D illustrates a perspective top view of the apparatus wherein the bifurcated jib is laterally converged and the fly beam is displaced from the distal part of the jib. Figure 7E is a perspective view of the distal part of the bifurcated jib which is laterally converged to support a single hoisting assembly operational for conventional hoisting with a single cable;

[0049] Figures 8A to 8C are schematic views of a balanced feeding apparatus for mounting on the ground adjacent to a building undergoing construction, incorporating a dual use bifurcated jib, constructed and operative in accordance with an embodiment of the present invention. Figure 8A illustrates a side view of the apparatus wherein the bifurcated jib is laterally spread and a fly beam is hang therefrom. Figure 8B is a front view of the apparatus of Figure 8A. Figure 8C is a top view of the apparatus of Figure 8A.

[0050] Figures 9A-9E are schematic views of a multitask hoisting apparatus for mounting to a building undergoing construction, incorporating a dual use bifurcated jib, constructed and operative in accordance with an embodiment of the present invention. Figure 9A is a top view of an apparatus similar to that of Figure 8A featuring a climbing tower crane mast which can be secured to a column of the building wall, in a laterally converged state, featuring two distal expandable wings which can support a fly beam and other balanced element. Figure 9B is a front view of the apparatus of Figure 9A, wherein the fly beam hoists an elevator. Figure 9C a side view of the apparatus of Figure 9A, wherein the fly beam hoists an elevator and a fork lift mechanism, and further including another elevator hoisted by a mechanism secured to the tower crane mast. Figure 9C a side view of the apparatus of Figure 9A, further including an elevator movable by a toothed sprocket wheel gear mechanism along toothed bar or chain secured to the tower crane mast. Figure 9E is a front view of the apparatus of Figure 9A, wherein the fly beam hoists a load such as a fork lift mechanism and the counterweight is featured with a hoisting element for hoisting further objects that add weight to the counterweight; and Figure 10 is a block diagram of a method for facilitating the depositing of a load through an opening in a building using a cantilevered feeding apparatus, operative in accordance with an embodiment of the present invention.

[0051] It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions and / or aspect ratio of some of the elements can be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals can be repeated among the figures to indicate corresponding or analogous elements throughout the serial views.

[0052] DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] Tower cranes are typically located beside a building undergoing construction so that the tower crane can reach different parts of the building with ability to lift and drop materials. Insertion of a load into openings confined between an upper and a lower floor is not possible with a regular hoisting assembly of the crane, and further means such as described by the prior art publications are used to facilitate maneuvering and insertion of the load.

[0054] A former solution of the present applicant is disclosed in international patent application No. PCT / IL2016 / 051282, International Publication No. WO 2017 / 094006. This publication teaches a balanced cantilevered feeding apparatus for coupling with a jib, including two spaced apart upright hoisting assemblies disposed on the jib, and a fly beam hoisted, balanced, and selectively positioned along a lateral axis by the two hoisting assemblies. A load securing member is mounted on a cantilevered extension portion of the fly beam, which extends beyond one of the two hoisting assemblies toward the building. The fly beam of this apparatus is moved along a “lateral axis” which is parallel to the jib longitudinal axis and therefore feeding of the load is limited to the positioning of the jib relative to the building wall. In particular, when the jib is mounted on the building, feeding of the load is limited to accessing a narrow strip of the building wall spanning right below the jib.

[0055] It is an object of the invention to provide a system, apparatus and method that is adapted for inserting a load onto a building structure through portals or openings of different levels. Such a needed apparatus selectively positions the load through the opening without requiring difficult balancing maneuvers, or complicated yaw, pitch, roll, panning, or other rotational maneuvers of the load and the hoisting apparatus. Feeding of a load by the technique disclosed herein is not limited to accessing a narrow strip of the building wall spanning right below the apparatus. Moreover, such an apparatus would be easier and safer to place the load through an opening in the building. Drawbacks and deficiencies associated with prior art hoist systems are alleviated by the present invention which provides a hoist system for placing a load onto a building structure at a jobsite. The building structure may comprise any structure including conventional residential and office buildings, and any other application wherein an object must be hoisted and maneuvered into position for final installation.

[0056] In its broadest sense, the present invention overcomes the disadvantages of the prior art by providing a balanced cantilevered feeding apparatus for depositing and removing of a load through an opening in a building wall. In the context of this disclosure, the term “building wall” is not limited to an already built wall, and refers, among others, also to the built or unbuilt external shell, envelop, or wall, of the building, outlining or wrapping building components such as skeleton, floors, ceilings, or inner walls. Accordingly, the opening can be a gap in the external wall between building components. The apparatus includes a rotatable jib mounted on or beside the building and defining a longitudinal jib axis. The apparatus further includes a fly beam hanging from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal axis of the jib. The two distal hoisting locations include a fulcrum location and a counterbalance location. The fly beam includes a cantilever to which the load can be secured, extending from the fulcrum location away from the counterweight location. When the jib is rotated for depositing and removing the load through the opening, the cantilever extends from the fulcrum location toward the building, e.g., toward the opening. The fly beam is configured to connect to a counterweight in the vicinity of the counterbalance location.

[0057] In some embodiments, the apparatus includes a support module for stabilizing the apparatus to the building or proximate to the building wall. The support module can feature a frame for securing to the building wall or building column and at least one diagonal support beam for supporting the module in a balanced position. The support module can feature a tower crane mast mounted to the building wall, building column, and / or supported on the ground. The support module can feature a slewing unit mounted on the support module for horizontally rotating the jib with respect to the support module. In some embodiments, the jib can be mounted at a proximal side thereof on the support module, wherein a distal side of the jib protrudes from the vertical projection of the building wall beside the opening. In some embodiments, the jib can include a bifurcated jib featuring two arms, wherein the two distal hoisting locations are respectively disposed on the distal side of the arms, wherein the arms are pivotally mounted to the support module and operational for turning to retractably split apart for increasing the spaced apart distancing of the two distal hoisting locations from one another along the lateral axis.

[0058] In some embodiments, the apparatus includes two hoisting elements respectively hanging from the two distal hoisting locations along a lateral axis crossing at an angle a vertical projection of the longitudinal jib axis at a distal side of the jib, wherein the fly beam is positioned, hoisted, and balanced by the two hoisting elements, and the cantilever extends beyond the fulcrum location toward the building when the jib is rotated. The hoisting elements can be configured to change hoist height.

[0059] In some embodiments, the fly beam is movable along the jib. For example, the hoisting elements can be designed to move the fly beam, wherein the hoisting elements are hanging from at least one trolley mechanism which can move along at least one rail spanning along the jib. Displacement of the fly beam changes horizontal distancing of the load from the proximal side of the jib and can also change hoist height if the jib is inclined.

[0060] In some embodiments, the fly beam is retractably extendable (adjustable in size) to accommodate a change of the lateral distance between the two distal hoisting locations.

[0061] In some embodiments, the cantilever is retractably extendable for changing the distance between the fulcrum location and a load securing location in the cantilever.

[0062] In some embodiments, the apparatus includes a load securing member mounted on the cantilever at a load securing location operational for engaging and hoisting the load, for allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating (the distal side of) the jib to insert or retract the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member.

[0063] In some embodiments, the apparatus includes a counterweight disposed on, or connected to the fly beam, in the vicinity of the counterbalance location.

[0064] In some embodiments, when the jib is rotated, the distal side of the jib protrudes from the vertical projection of the building wall beside the opening, and is moved along an arcuate path external to the building, spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall.

[0065] In some embodiments, the jib is a luffing jib which can tilt to change its inclination. Change of jib inclination can be applied to change hoist height or horizontal distancing of the load from the proximal side of the jib.

[0066] In some embodiments, the jib is retractably extendable. The jib may feature a retractably extendable boom. Boom extension or retraction can be applied to change hoist height or horizontal distancing of the load from the proximal side of the jib.

[0067] In some embodiments, the jib includes a distal rotating beam which is rotatably mounted to the distal side of the jib, where the two distal hoisting locations are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis, where rotation of the beam changes the angle between the longitudinal axis of the jib and the lateral axis. Changing of this angle can be applied to change horizontal distancing of the load from the proximal side of the jib. The distal rotating beam may be retractably extendable (adjustable in size) for changing the lateral distance between the two distal hoisting locations.

[0068] In accordance with an embodiment of the present invention, the apparatus includes a support module for stabilizing the apparatus to the building or proximate to the building wall. The apparatus may include a rotatable jib defining a longitudinal axis, the jib mounted at a proximal side thereof on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening. The apparatus may include a slewing unit mounted on the support module for horizontally rotating the jib to move the distal side of the jib along an arcuate path spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall. The apparatus may include two hoisting elements respectively hanging from two distal hoisting locations spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the distal hoisting locations including a fulcrum hoisting location and a counterweight hoisting location. The apparatus may include a fly beam positioned, hoisted, and balanced by the two hoisting elements at two respective fulcrum location and counterweight location in the fly beam. The fly beam may include a cantilever extending beyond the fulcrum location toward the building when the jib is rotated by the slewing unit to move the distal side of the jib along the arcuate path toward the proximal arc location. The fly beam may include a load securing member mounted on the cantilever at a load securing location positioned outwardly from the fulcrum location and operational for engaging and hoisting the load, allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the distal side of the jib to insert or retract a cantilever portion, which includes the load securing location, through the opening, into and out of the building, together with the load if secured to the load securing member. The apparatus may include a counterweight disposed on, or connected to, the fly beam in the vicinity of the counterweight location.

[0069] In accordance with another broad aspect of the present invention, there is provided a method for facilitating depositing and removing of a load through an opening in a building wall, the method includes the procedure of mounting a rotatable jib on or beside the building, wherein the jib defines a longitudinal jib axis. The jib distal side can rotate along an arcuate path external to the building. The method further includes hanging a fly beam from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal axis of the jib, the two distal hoisting locations comprising a fulcrum location and a counterbalance location, the fly beam comprising a cantilever to which the load can be secured, the cantilever extending from the fulcrum location toward the building when the jib is rotated for depositing and removing the load through the opening. The method further includes connecting a counterweight to the fly beam in the vicinity of the counterbalance location. The method further includes securing or releasing the load to or from the cantilever. The method further includes rotating the jib to insert or extract the cantilever through the opening into the building, together with the load if secured to the cantilever. The method further includes depositing or removing the load in or from the building.

[0070] In some embodiments, the method includes stabilizing the apparatus to the building or proximate to the building wall by a support module. In some embodiments, the stabilizing can include securing the support module to the building wall by a frame and supporting the frame in a balanced position by at least one diagonal support beam. In some embodiments, the support module features a tower crane mast and the stabilizing includes mounting the mast to the building wall and / or supporting the mast on the ground.

[0071] In some embodiments, the mounting of the rotatable jib includes mounting the jib at a proximal side thereof on the support module, wherein a distal side of the jib protrudes from the vertical projection of the building wall beside the opening. In some embodiments, the rotating includes horizontally rotating the jib by a slewing unit which is mounted on the support module, with respect to the support module.

[0072] In some embodiments, the method includes positioning, hoisting, and balancing the fly beam by two hoisting elements respectively hanging from the two distal hoisting locations, along a lateral axis crossing at an angle a vertical projection of the longitudinal jib axis at a distal side of the jib, wherein the cantilever extends beyond the fulcrum location toward the building when the jib is rotated. The positioning, hoisting, and balancing can include changing hoist height by the two hoisting elements.

[0073] In some embodiments, the positioning, hoisting, and balancing include moving the fly beam along the jib. The fly beam can be moved, for example, by moving at least one trolley mechanism which can move along at least one rail spanning along the jib and from which the hoisting elements are hanging. Displacement of the fly beam can change horizontal distancing of the load from the proximal side of the jib and can change load hoist height if the jib is inclined.

[0074] In some embodiments, the method includes extending and retracting (adjusting size of) the fly beam to accommodate a change of the lateral distance between the two distal hoisting locations.

[0075] In some embodiments, the jib includes bifurcated jib featuring two arms, wherein the two distal hoisting locations are respectively disposed on the distal side of the arms, the arms being pivotally mounted to the support module and operational for turning to retractably split apart for increasing the spaced apart distancing of the two distal hoisting locations from one another along the lateral axis.

[0076] In some embodiments, the method includes extending and retracting the cantilever for changing the distance between the fulcrum location and a load securing location in the cantilever.

[0077] In some embodiments, the method includes mounting a load securing member on the cantilever at a load securing location operational for engaging and hoisting the load and allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating (the distal side of) the jib. The method further includes inserting or retracting the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member, by moving the fly beam, by rotating the jib.

[0078] In some embodiments, the method includes disposing or connecting a counterweight on / to the fly beam in the vicinity of the counterbalance location.

[0079] In some embodiments, the rotating includes moving the distal side of the jib to protrude from the vertical projection of the building wall beside the opening, and to move along an arcuate path external to the building, spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall.

[0080] In some embodiments, the method includes tilting the jib to change its inclination (for changing hoist height or horizontal distancing of the load from the proximal side of the jib), wherein the jib comprises a luffing jib which can tilt. In some embodiments, the method includes retracting and extending the jib (for changing hoist height or horizontal distancing of the load from the proximal side of the jib). The jib may feature a retractably extendable boom, wherein the boom extension or retraction changes the hoist height or changes horizontal distancing of the load from the proximal side of the jib.

[0081] In some embodiments, the method includes changing the angle between the longitudinal axis of the jib and the lateral axis. Changing of the angle can change horizontal distancing of the load from the proximal side of the jib. The changing of this angel can include by virtue of rotating a distal rotating beam which is rotatably mounted to the distal side of the jib, wherein the two distal hoisting locations are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis.

[0082] In some embodiments, the method includes retracting and extending the distal rotating beam (for adjusting in size) for changing the lateral distance between the two distal hoisting locations.

[0083] In accordance with an embodiment of the present invention, the method includes stabilizing a support module to the building or proximate to the building wall. The method may further include mounting a jib, defining a longitudinal axis, at a proximal side thereof on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening. The method may further include hanging two hoisting elements respectively from two distal hoisting locations spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the distal hoisting locations including a fulcrum hoisting location and a counterweight hoisting location. The method may further include hanging a fly beam on the two hoisting elements at two respective fulcrum location and counterweight location in the fly beam, wherein a cantilever of the fly beam extends beyond the fulcrum location toward the building when the fly beam is moved to approach the building. The method may further include connecting or disposing a counterweight to the fly beam in the vicinity of the counterweight location. The method may further include hoisting and releasing the load, by a load securing member secured to the cantilever at a load securing location positioned outwardly from the fulcrum location. The method may further include positioning, hoisting, and balancing the fly beam by rotating the jib horizontally with a slewing unit configured to move the distal side of the jib along an arcuate path spanning between a distal arc location operational for depositing, removing and hoisting the load in a distal location distanced away from the building wall, and a proximal arc location operational for depositing, removing and hoisting the load withing the building, e.g., wherein the cantilever and the load are inserted and retracted through the opening. The method may further include depositing the load in an internal location in the building or removing the load from the building by rotating the distal side of the jib to respectively insert or retract a cantilever portion which includes the load securing location, the load securing member, and a hoisted load, if secured to the load securing member, and respectively releasing the load when laid in the internal location from the load securing member for depositing the load in the building or securing the load to the load securing member for removing the load from the building. The method may further include removing the load from an external location outside the building wall or depositing the load in the external location by rotating the distal side of the jib to the distal location, and respectively securing the load to the load securing member for removal of the load from the external location or releasing the load when laid in the external location from the load securing member for depositing of the load in the external location.

[0084] In accordance with another aspect of the present invention technique, there is provided a spreadable hoisting apparatus including a support module for stabilizing the apparatus to the building or proximate to the building wall, and a rotatable or a radial bifurcated jib mounted on the support module, e.g., via a slewing unit. The slewing unit may be mounted on the support module, for horizontally rotating the jib with respect to the support module. The slewing unit may be located on the building or beside the building in close proximity to the building. The bifurcated jib may be mounted at its proximal end to, and radially extending from, the slewing unit, and such that an uninterrupted horizontal rotation of the jib outside the building, when disposed in close proximity beside the building, is allowed. The jib features two pivotal arms, each arm is pivotally mounted at its proximal side, e.g., to the slewing unit, and includes a distal hoisting location at its distal side. The arms are operational to pivotally split apart for spreading the two respective distal hoisting locations and to pivotally converge for gathering the two respective distal hoisting locations. The spreadable hoisting apparatus is functional to hoist a balanced fly beam and balancing requiring elements in its spread state and to hoist elements which do not require balancing in its converged state.

[0085] In the following detailed description, specific details are set forth in order to provide a thorough understanding of the disclosure. However, it will be understood by those skilled in the art that the disclosure may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the present disclosure. Some features or elements described with respect to one system may be combined with features or elements described with respect to other systems. For the sake of clarity, discussion of same or similar features or elements may not be repeated.

[0086] Although the disclosure is not limited in this regard, the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more.” The terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like. The term “a plurality of” when referred to a quantity or a group of components, devices, elements, units, parameters, or the like, may refer to two or more or to all of such quantified or to all of such in the group. The term “one or more of” when referred to a quantity or a group of components, devices, elements, units, parameters, or the like, may refer to one or more or to all of such quantified or to all of such in the group.

[0087] Unless explicitly stated, the methods described herein are not constrained to a particular order or sequence. Additionally, some of the described methods or elements thereof can occur or be performed simultaneously, at the same point in time, or concurrently.

[0088] In the description herein, like numbers of elements in different embodiments and Figures are used to designate like parts.

[0089] Reference is now made to Figures 1 A to 1 C, which illustrate views of balanced cantilevered feeding apparatus 100 mounted to a building undergoing construction, constructed and operative in accordance with an embodiment of the present invention. Figure 1 A is a schematic perspective view of apparatus 100 featuring luffing jib 102 mounted to supporting tower 104 which is secured to column 106 of a building wall, and cantilever 108 of hoisted fly beam 110. Figure 1 B is a schematic perspective view of jib 102. Figure 1 C is a side view of apparatus 100 demonstrating the tilting of luffing jib 102 in different inclinations.

[0090] Apparatus 100 is operational for depositing and removing of a load 1 12 through an opening in a building wall. Apparatus 100 includes rotatable jib 102 which is mounted on or beside building 1 14, and which defines a longitudinal jib axis 1 16. Jib 102 can rotate in directions a which are best seen in horizontal postures as in Figs 1A and 1 B (Jib 102 can include a luffing jib, and still rotate in direction a in an inclined posture up to an almost erect position as in Figure 1 C). Apparatus 100 further includes fly beam 1 10 which is hanging from two distal hoisting locations 1 18, 120 of jib 102 along a lateral axis 154 crossing a vertical projection of longitudinal axis 1 16 by connection to fly beam 1 10 at fulcrum location 124 and counterbalance location 126 along a longitudinal axis 122 of fly beam 1 10. The two distal hoisting locations 118, 120 include fulcrum location 120 and counterbalance location 1 18. A first hoisting element 152 hangs from fulcrum location 120 of a first jib portion of jib 102, such as a first jib arm. A second hoisting element 150 hangs from counterbalance location 1 18 of a second jib portion of jib 102, such as a second jib arm. First hoisting element 152 is coupled to fulcrum location 124 of fly beam 1 10, and second hoisting element 150 is coupled to counterweight location 126 of fly beam 110. A lateral distance “e” between fulcrum location 124 and counterweight location 126 of fly beam 1 10 corresponds to a lateral distance “f” between fulcrum location 120 and counterbalance location 1 18, such that fly beam 1 10 is fixedly aligned laterally of jib 102. Fly beam 1 10 includes cantilever 108 to which load 1 12 can be secured at load securing location 128, extending from fulcrum location 124 toward building 1 14 when jib 102 is rotated for depositing and removing load 1 12 through the opening. Fly beam 110 is configured to connect to counterweight 130 in the vicinity of counterweight location 126.

[0091] Apparatus 100 includes support module 132 for stabilizing apparatus 100 to building 1 14 or proximate to the wall of building 114. Support module 132 can feature frames such as frames 134 for securing to the building wall or to building column 106 and at least one diagonal support beam such as beam 136 for supporting module 132 in a balanced position. Support module 132 can feature tower crane mast 138 which is mounted to the building wall, building column 106, and / or supported on the ground. Support module 132 can feature slewing unit 140 which is mounted on support module 132 for horizontally rotating jib 102. Jib 102 can be mounted at proximal side 142 thereof on support module 132, wherein distal side 144 of jib 102 protrudes from the vertical projection of the building wall beside the opening. Jib 102 includes a distal lateral jib beam 145 spanning along lateral axis 154 which is crossing, at an angle a, a vertical projection of longitudinal axis 1 16 at distal side 144 of jib 102. In some embodiments lateral jib beam 145 can be expanded or contracted to change breadth distance f, between distal hoisting location 118 and 120, and other embodiments do not incorporate a distal lateral jib beam.

[0092] Apparatus 100 optionally includes load securing member 146 (e.g., a hook, a forklift, a belt or a platform, which can hang on a cable secured to cantilever 108, or hoisted by a hoisting assembly which can lift and lower the load), which is operational for engaging and hoisting load 1 12. Member 146 is mounted on cantilever 108 at load securing location 128 or its vicinity (128’ in Figure 1 D), for allowing depositing and removing of load 1 12 through the opening in the building wall when fly beam 1 10 is moved by rotating distal side 144 of jib 102 to insert or retract cantilever 108, including load securing location 128 through the opening into and out of building 114 together with load 1 12 - if secured to load securing member 146.

[0093] In some embodiments, the apparatus includes counterweight 130, which is disposed on, or connected to fly beam 1 10, in the vicinity of counterbalance location 126. In other embodiments, the counterweight is not part of the apparatus and any adequate counterweight can be attached to fly beam 1 10.

[0094] Reference is now also made to Figures 1 D and 1 E. Figure 1 D is a side view of an embodiment of a fly beam constructed and operative in accordance with the invention in conjunction with the apparatus 100, featuring load and counterweight moving means. Figure 1 E is a side view of an embodiment of a fly beam constructed and operative in accordance with the invention in conjunction with apparatus 100, featuring a retractably extendable fly beam. Optionally, cantilever 108 is retractably extendable for changing distance d between fulcrum location 124 and load securing location 128 (and load 1 12, if carried) in cantilever 108. Increase in distance d (into d’ in Figure 1 E, wherein load securing location 128 is moved) allows for deeper insertion, unloading, or picking up of load 1 12 within the interior of building 1 14, but also changes the moment respective of the fulcrum 124, and accordingly may requires increase in mass of counterweight 130 to provide a balancing weight against the same maximal weight of load 1 12 for maintaining fly beam 1 10 balanced. Fly beam 100 can includes means for displacing load 1 12 from load securing location 128 to another load securing location 128’ in Figure 1 D, along cantilever 108, to change distance d (into distance d’) and the moment with respect to fulcrum 124 (which is done in compatibility to the weight of counterweight 130 to maintain balancing of fly beam 1 10).

[0095] In some embodiments, fly beam 110 includes means for displacing counterweight 130 (e.g., from counterweight balance location 126 to counterweight balance location 126’ in Figure 1 D) along fly beam 110, to change distance e (into e’ in Figure 1 D) and the moment with respect to fulcrum 124 (which is done in compatibility to the weight of load 1 12 to maintain balancing of fly beam 110). In some embodiments fly beam 100 is retractably extendable, as seen in Figure 1 E, for changing distance e between counterweight balance location 126 (and counterweight 130) and fulcrum location 124 into distance e’, e.g., for adjusting the length of fly beam 100 to be compatible to distance f between distal hoisting locations 1 18 and 120, as distance f can vary among different jibs 1 10. If jib 1 10 incorporates means to displace distal hoisting locations 1 18 and 120 from each other (e.g., along a distal lateral jib beam 148, by adjustment of the length of beam 148, or by contracting and broadening the breadth of the jib as shown in other embodiments herein). Change of distance e changes the moment with respect to fulcrum 124 (which should be done in compatibility to the weight of counterweight 130 to maintain balancing of fly beam 1 10). Some embodiments in accordance with the invention include a combination of any of the adjustment means described above which change the distance between fulcrum location 124, and counterbalance location 126 (distance e) and / or load securing location 128 (distance d).

[0096] In accordance with an aspect of the invention, with reference to Figures 1 A-1 C, balanced cantilevered feeding apparatus 1 10 for depositing and removing of load 1 12 through an opening in a building wall of building 1 14, can be described to include:

[0097] • support module 132 for stabilizing apparatus 100 to building 1 14 or proximate to the building wall of building 1 14.

[0098] • rotatable jib 102 defining longitudinal axis 1 16, wherein jib 1 10 is mounted at proximal side 142 thereof on support module 132, wherein distal side 144 of jib 1 10 can protrude from the vertical projection of the building wall beside the opening.

[0099] • slewing unit 140 mounted on support module 132 for horizontally rotating jib in directions a to move distal side 144 of the jib along an arcuate path b spanning between distal arc location operational for depositing, removing and hoisting load 1 12 away from the building wall, and a proximal arc location for depositing and removing load 1 12 through the opening in the building wall.

[0100] • two hoisting elements 150, 152 respectively hanging from two distal hoisting locations 1 18, 120, which are spaced apart from one another along lateral axis 154 which is crossing, at an angle a, a vertical projection of longitudinal axis 1 16 at distal side 144 of jib 102, wherein distal hoisting locations 1 18, 120 include fulcrum hoisting location 120 and counterweight hoisting location 118.

[0101] • fly beam 110 positioned, hoisted, and balanced by the two hoisting elements 150, 151 , at two respective fulcrum location 124 and counterweight location 126 in fly beam 110. The fly beam including:

[0102] (i) cantilever 108 extending beyond fulcrum location 124 toward building 1 14 when jib 102 is rotated by slewing unit 140 to move distal side 144 of jib 102 along arcuate path b toward the proximal arc location; and

[0103] (ii) load securing member 146 mounted on cantilever 108 at load securing location 128 positioned outwardly from fulcrum location 124 and operational for engaging and hoisting load 1 12, allowing depositing and removing of load 1 12 through the opening in the building wall when fly beam 1 10 is moved by rotating distal side 144 of jib 102 to insert or retract a cantilever portion, which includes load securing location 128, through the opening, into and out of building 1 14, together with load 1 12 if carried (secured to load securing member 146).

[0104] • counterweight 13 disposed on, or connected to, fly beam 1 10 in the vicinity of counterweight location 126.

[0105] Reference is now made to Figures 2A and 2B which illustrate views of apparatus 200 constructed and operative in accordance with an embodiment of the present invention. Apparatus 200 is similar to apparatus 100 and demonstrates the possibility of removal of flying beam 1 10 and the possibility of varying distal breadth f. Apparatus 200 features climbing tower crane 104 which is mounted to column 106 of building 1 14 undergoing construction, and jib 202 having a spreading distal breadth f. In Figure 2A the posture of jib 202 is almost erect and jib 202 hoists balanced feeding fly beam 1 10 with its cantilever 108 inserted into building 114 through opening 160 in wall 162 (“wall” 162 can be the shell wrapping the structure of building 1 14, represented by striped patch fractures from a real wall or the virtual shell where a wall will eventually be built). In figure 2B, jib 200 in the same posture hoists single hoisting assembly 164. Substitution of fly beam 1 10 with single hosting assembly 164 is also possible in apparatus 100. Adjustment of distal breadth f is achieved by the bifurcated structure of jib 100, as further detailed with reference to Figures 7A-8C.

[0106] Reference is now made to Figures 3A and 3B which illustrate views of apparatus 300 constructed and operative in accordance with an embodiment of the present invention. Apparatus 300 is similar to apparatuses 100 and 200 and demonstrates direct mounting to a building without a tower crane mast and the operation of a luffing jib. Apparatus 300 includes frames 366 which directly mount to column 106 of building 1 14, which is undergoing construction, and jib 302 which features a spreading distal breadth f. Jib 302 is a luffing jib which can tilt to change its inclination. It is noted that displacement of fly beam 1 10 by a change in jib 302 inclination can be applied to change hoist height or horizontal distancing of the load from proximal side 142 of jib 302 (or from the mounting location of jib 302. A jib tilting apparatus represented by telescopic hydraulic arm 155 is operational for tilting jib 302 into a desired inclination. Arm 155 can also be seen in embodiments shown in Figures 1 A-2B, 4A-6C, and 9A-9E. In Figure 3A the posture of jib 302 is inclined, where jib 302 hoists balanced feeding fly beam 1 10 with its cantilever 108 inserted into building 1 14 through opening 160 in building wall 162. In figure 3B, jib 302 posture is almost erect and jib 302 hoists balanced feeding fly beam 1 10 with its cantilever 108 inserted into building 114 through opening 160 in wall 162 in a location closer to proximal side 142 and building column 106. Frames 366 embrace column 106 and include each a platform 368, and serve as the support module of apparatus 300. Slewing unit 140 is mounted to platforms 368 from above and below and supports and rotates jib 302.

[0107] Reference is now made to Figures 4A and 4B which illustrate views of apparatus 400 constructed and operative in accordance with an embodiment of the present invention. Apparatus 400 is similar to apparatuses 100, 200 and 300 and demonstrates direct mounting to an internally disposed building wall. Apparatus 400 is directly mounted to wall 170 which is disposed internally respective of the outer shell 162 (or the vertical projection of shell 162) of building 1 14 undergoing construction. Reference is now also made to Figures 5A-5D. Apparatus 400 (and apparatus 500 which is further discussed below) includes support module 432 featuring frame 466 which is secured to wall 170 (column 106 in Figures 5A-5D), and a slewing unit 140 which is supported by and mounted on frame 466. Support module 432 includes at least one diagonal support beam such as beams 174 for supporting module 432 in a balanced position. Beams 174 are mounted to wall 170 (or column 106) and to support frame 466 from below, and similar beams (not shown) can be mounted to wall 170 (or column 106) and frame 466 to support frame 466 from above. In addition, sideways diagonal support beam 176 can be mounted between wall 170 and frame 432 to provide sideway stabilization.

[0108] Apparatus 400 includes jib 402 which is mounted on and rotatable by slewing unit 140 and can feature a spreading distal breadth f. In Figure 4A the posture of jib 402 is inclined and jib 402 hoists a balanced feeding fly beam 1 10 with its cantilever directed to insert to top floor 172 through opening in the vertical projection of building wall 162. In figure 4B, jib 402 is in an almost erect posture and hoists single hoisting assembly 164.

[0109] When jib 402 is rotated, distal side 144 of jib 402 protrudes from the vertical projection of building wall 162 beside opening 160, as in Figure 4A, and can be rotated to move along an arcuate path external to building 104, spanning between a distal arc location operational for depositing, removing and hoisting a load away from building wall 162, and a proximal arc location for depositing and removing the load through opening 160 in building wall 162 or the vertical projection of building wall 162.

[0110] Reference is now made to Figures 5A-5D which are schematic views of balanced feeding apparatus 500, constructed and operative in accordance with an embodiment of the present invention, which mounted to column 106 of building 1 14 which is undergoing construction. Apparatus 500 is similar to apparatuses 100 to 400 and demonstrates direct mounting to a building, a retractably extendable jib, a luffing jib, and a distally rotatable fly beam. Apparatus 500 includes retractably extendable jib 502 and distal rotating beam 180. In Figure 5A, jib 502 is shown in an extended mode, and is rotated into a ready posture for picking up or releasing a load inside building 1 14, wherein the lateral axis 182 of distal rotating beam 180 is positioned at a right angle relative to the vertical projection of longitudinal axis 1 16 of jib 502. In Figure 5B jib 502 is shown in a partially extended mode and positioned for picking up or releasing a load inside the building, wherein lateral axis 182 of distal rotating beam 180 is positioned at an acute angle relative to vertical projection of longitudinal axis 1 16 of jib 502. Figure 5C is a top view of apparatus 500 in the posture of Figure 5B. Figure 5D is a side view of apparatus 500 in the posture of Figure 5B. Jib 502 is retractably extendable, and features a retractably extendable boom 184. Extension or retraction of boom 184 can be applied to change hoist height (when jib 502 is inclined in a non-horizontal inclination) or horizontal distancing of the load from proximal side 142 of jib 502, which is effective to varying the lateral distancing of the insertion location through an opening in the building shell.

[0111] Distal rotating beam 180 is rotatably mounted to distal side 144 of jib 502, which is also the distal side of boom 184. Two distal hoisting locations are disposed on distal rotating beam 180 and are spaced apart from one another along lateral axis 182. Rotation of beam 180 changes the angle a (best seen in Figure 5C) between longitudinal axis 1 16 of jib 502 and lateral axis 182 (which is parallel and above longitudinal axis 122). Changing of angle a can be applied to change horizontal distancing of the load from proximal side 142 of the jib. Distal rotating beam 180 may be retractably extendable (adjustable in size) for changing the lateral distance f between the two distal hoisting locations 1 18, 120.

[0112] Reference is now made to Figures 6A-6D, which are schematic views of components of a balanced feeding apparatus 600 which can be mounted to building 114 undergoing construction, featuring a retractably extendable and foldable luffing jib 602, constructed and operative in accordance with an embodiment of the present invention. Figure 6A is a side view of apparatus 600 wherein the jib is folded in a hibernate mode. Figure 6B is a side view of apparatus 600 wherein jib 602 is expanded in an operation mode. Figure 6C is a top view of jib 602 when expanded in an operation mode. Figure 6D is a distal front view of a distal lateral jib beam 142 of jib 602 and fly beam 1 10 hanging there from. It is noted that foldable luffing jib 602 is similar in structure to conventional concrete boom pumps which are used for concrete line pumping, and as such is particularly suitable to carry and support the hose which is used for application of liquid concrete to an exact location, such as hose 603. Similarly, a concrete hose of line pumping can be coupled to the jib of any of the other embodiments described herein. It is also noted that jib 602 is shown mounted on tower mast 104, however, jib 602 can be mounted a mast which is supported in a vertical bore in a building undergoing construction, as is known for conventional concrete boom pumps. Similarly, any of the other embodiments described herein can be mounted with a mast which is supported in a vertical bore in a building undergoing construction.

[0113] Reference is now Figures 7A to 7E are schematic views of a multipurpose apparatus 700 for mounting to a building undergoing construction, incorporating a multipurpose bifurcated jib 702, constructed and operative in accordance with an embodiment of the present invention. Figure 7A illustrates a perspective view of apparatus 700 wherein arms 156 of bifurcated jib 702 are laterally converged and longitudinally expanded. Figure 7B illustrates a perspective view of apparatus 700 wherein peripheral arms 156 of bifurcated jib 702 are longitudinally contracted and laterally spread apart to broaden the distal end 144 and distal breadth f for hoisting balanced cantilevered fly beam 1 10. Figure 3B illustrates a top view of apparatus 700 wherein peripheral arms 156 of bifurcated jib 702 are laterally split. Figure 7C is a zoomed in top view of the expansion mechanism 158 of the apparatus wherein arms 156 of bifurcated jib 702 are laterally split. Figure 7D illustrates a perspective top view of apparatus 700 wherein bifurcated jib 702 is laterally converged and fly beam 1 10 is displaced from distal part 144 of jib 702. Figure 7E is a perspective view of distal part 144 of bifurcated jib 702 which is laterally converged to support single hoisting assembly 764 operational for conventional hoisting of a load with a single cable 186.

[0114] Apparatus 700 is a spreadable hoisting apparatus which includes support module 732 for stabilizing apparatus 700 to a building or proximate to the building wall. Rotatable or radial bifurcated jib 702 is mounted on support module 732, but can be mounted on any other support module of other embodiments described in reference to any of the other Figures. Jib 702 features two pivotal arms 156, wherein each arm 156 is pivotally mounted at its proximal side 142 to slewing unit 140 which is mounted on support module 732. Slewing unit 140 is configured to horizontally rotate jib 702 with respect to support module 732. Slewing unit 140 may be located on the building or beside the building in close proximity to the building. Bifurcated jib 702 is mounted at its proximal end (e.g., end of proximal side 142) to, and radially extending from, slewing unit 140 such that an uninterrupted horizontal rotation of bifurcated jib 702 outside the building, when disposed in close proximity beside the building, is allowed. Each arm 156, includes a distal hoisting location 1 18 or 120 at its distal side 144. Arms 156 operational to pivotally split apart for spreading the two respective distal hoisting locations 118 and 120 (as in Figures 7B and 7C) and to pivotally converge for gathering the two respective distal hoisting locations 1 18 and 120 (as in Figures 7A, 7B and 7E). Accordingly, the two distal hoisting locations 1 18 and 120 are respectively disposed on the distal side 142 of arms 156, wherein arms 156, which are pivotally mounted to support module 732, are operational for turning to retractably split apart for increasing (or converge and decreasing) the spaced apart distancing fof two distal hoisting locations 1 18, 120 from one another along jib distal lateral axis 154.

[0115] Apparatus 700 includes two hoisting elements 150, 152 respectively hanging from the two distal hoisting locations 1 18, 120 along a lateral axis 154 crossing at an angle a a vertical projection of the longitudinal jib axis 1 16 at distal side 144 of jib 702, wherein fly beam 1 10 is positioned, hoisted, and balanced by two hoisting elements 150, 152. Cantilever 108 extends beyond fulcrum location 124 toward the building when jib 702 is rotated. Hoisting elements 150, 152 can be configured to change hoist height.

[0116] To meet a change of the lateral distance f between the two distal hoisting locations 1 18, 120, fly beam 1 10 can be retractably extendable (adjustable in size) between hoisting locations 124 and 126 such that distance e will accommodate such a change to match distance f. Alternatively, fly beam 110 includes means for displacing there along at least one of distal hoisting locations 124 and 126 and thereby allow the change of distance e. For example, hoisting elements 150, 152 can be slidingly connectable to fly beam 110 through rail 188 which allows their slide along fly beam 1 10. Rail 188 can span along the entirety of fly beam 1 10 or limited portion thereof.

[0117] Referring now to Figure 7D, fly beam 110 is shown to be movable along jib 702. For example, hoisting elements 150, 152 can be designed to move fly beam 100, wherein hoisting elements 150, 152 are hanging from at least one trolley mechanism which can move at least one hoisting element 150, 156 along at least one rail spanning along a jib. In the case of split jib 702, two such trolley mechanisms wherein each is movable along a rail in an arm 156, move hoisting elements 150, 152. Preferably, such movement is conducted when jib 702 is in a contracted mode to converge its breadth as in Figure 7D - thereby allowing movement of fly beam 100 along jib 702 with a constant contracted distance e. Movement along jib 702 in its expanded split mode is possible by allowing at least one hoisting elements 150, 152 to slide along rail 188 to accommodate distance e to the change of distance f along jib 702.

[0118] Displacement of fly beam 1 10 along jib 702 changes horizontal distancing of the load from proximal side 142 of jib 702 and can also change load hoist height if jib 702 is inclined in a non-horizontal inclination.

[0119] Reference is now made to Figures 8A to 8C, which are schematic views of multipurpose hoisting apparatus 800 constructed and operative in accordance with an embodiment of the present invention, for mounting on the ground adjacent to building 1 14 undergoing construction and featuring multitask bifurcated jib 802. Figure 8A illustrates a side view of apparatus 800 wherein bifurcated jib 802 is laterally spread and fly beam 1 10 is hang therefrom. Figure 8B is a front view of apparatus 800. Figure 8C is a top view of apparatus 800. Jib 802 features a bifurcated structure similar to the embodiment described with reference to Figures 7A-7E. Jib 802 is retractably extendable along its longitudinal axis 1 16, and is shown in a retracted mode (revealing one fixed-length proximal section 192 and two retractably expandable sections 194a, 194b) while expanded laterally by virtue of its split apart arms 156.

[0120] Reference is now also made to Figures 9A-9E which are schematic views of a multipurpose hoisting apparatus 900 operational for mounting to a building undergoing construction, incorporating a multitask bifurcated jib 902, constructed and operative in accordance with an embodiment of the present invention. Figure 9A is a top view of apparatus 900 which is similar to that of Figure 8A, featuring climbing tower crane mast 104 which can be secured to a wall or a column of building wall. Apparatus 900 is shown in a laterally converged state, while longitudinally extended, revealing additional retractably expandable sections 194c and 194d (in addition to sections 192, 194a, 194b). Jib 902 features two distal expandable wings 190 which can support fly beam 1 10 in a balanced posture and other balance requiring elements, such as balanced platform 196. Figure 9B is a front view of apparatus 900, wherein fly beam 110 hoists an elevator or elevators 198. Figure 9C a side view of apparatus 900, wherein platform 196 hoists elevator 198 and fork lift mechanism 199. Apparatus 900 optionally includes another elevator 197, hoisted by mechanism 195 which is secured to tower crane mast 104. Figure 9C a side view of apparatus 900, further including elevator 193 movable by a toothed sprocket wheel gear mechanism 191 along toothed bar or chain secured to tower crane mast 104. Figure 9E is a front view of apparatus 900, wherein fly beam 1 10 hoists a load such as fork lift mechanism 199 and counterweight 130 is featured with hoisting element 187 for hoisting further objects that add weight to the counterweight.

[0121] Reference is now made to Figure 10, which is a block diagram of a method 1000 for facilitating the depositing of a load through an opening in a building using a cantilevered feeding apparatus, operative in accordance with an embodiment of the present invention. Method 100 includes procedure 1002 of mounting a rotatable jib on or beside the building, where the jib defines a longitudinal jib axis. The jib distal side can rotate along an arcuate path external to the building.

[0122] Method 1000 further includes procedure 1004 of hanging a fly beam from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal axis of the jib, where the two distal hoisting locations include a fulcrum hoisting location and a counterbalance hoisting location, and the fly beam includes a cantilever to which the load can be secured, the cantilever extending from a fly beam fulcrum location toward a building opening when the jib is rotated for depositing and removing the load through the opening.

[0123] Method 1000 further includes procedure 1006 of coupling a counterweight to the fly beam at a fly beam counterweight location.

[0124] Method 1000 further includes procedure 1008 of securing or releasing the load to or from the cantilever.

[0125] Method 1000 further includes procedure 1010 of rotating the jib to insert or extract the cantilever through the opening into the building, together with the load if secured to the cantilever.

[0126] Method 100 further includes procedure 1012 of depositing or removing the load in or from the building.

[0127] In some embodiments, the method includes stabilizing the apparatus to the building or proximate to the building wall by a support module. In some embodiments, the stabilizing can include securing the support module to the building wall by a frame and supporting the frame in a balanced position by at least one diagonal support beam. In some embodiments, the support module features a tower crane mast and the stabilizing includes mounting the mast to the building wall and / or supporting the mast on the ground.

[0128] In some embodiments, the mounting of the rotatable jib includes mounting the jib at a proximal side thereof on the support module, wherein a distal side of the jib protrudes from the vertical projection of the building wall beside the opening. In some embodiments, the rotating includes horizontally rotating the jib by a slewing unit which is mounted on the support module.

[0129] In some embodiments, the method includes positioning, hoisting, and balancing the fly beam by two hoisting elements respectively hanging from the two distal hoisting locations, along a lateral axis crossing at an angle a vertical projection of the longitudinal jib axis at a distal side of the jib, wherein the cantilever extends beyond the fulcrum location toward the building when the jib is rotated. The positioning, hoisting, and balancing can include changing hoist height by the two hoisting elements.

[0130] In some embodiments, the positioning, hoisting, and balancing include moving the fly beam along the jib. The fly beam can be moved, for example, by moving at least one trolley mechanism which can move along at least one rail spanning along the jib and from which the hoisting elements are hanging. Displacement of the fly beam can change horizontal distancing of the load from the proximal side of the jib and can change load hoist height if the jib is inclined.

[0131] In some embodiments, the method can further include extending and retracting (adjusting size of) the fly beam to accommodate a change of the lateral distance between the two distal hoisting locations.

[0132] In some embodiments, the jib includes bifurcated jib featuring two arms, wherein the two distal hoisting locations are respectively disposed on the distal side of the arms, the arms being pivotally mounted to the support module and operational for turning to retractably split apart for increasing the spaced apart distancing of the two distal hoisting locations from one another along the lateral axis.

[0133] In some embodiments, the method includes extending and retracting the cantilever for changing the distance between the fulcrum location and a load securing location in the cantilever.

[0134] In some embodiments, the method includes mounting a load securing member on the cantilever at a load securing location operational for engaging and hoisting the load and allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating (the distal side of) the jib. The method further includes inserting or retracting the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member, by moving the fly beam, by rotating the jib.

[0135] In some embodiments, the method includes disposing or connecting a counterweight on / to the fly beam in the vicinity of the counterbalance location. In some embodiments, the rotating includes moving the distal side of the jib to protrude from the vertical projection of the building wall beside the opening, and to move along an arcuate path external to the building, spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall.

[0136] In some embodiments, the method includes tilting the jib to change its inclination (for changing hoist height or horizontal distancing of the load from the proximal side of the jib), wherein the jib comprises a luffing jib which can tilt.

[0137] In some embodiments, the method includes retracting and extending the jib (for changing hoist height or horizontal distancing of the load from the proximal side of the jib). The jib may feature a retractably extendable boom, wherein the boom extension or retraction changes the hoist height or changes horizontal distancing of the load from the proximal side of the jib.

[0138] In some embodiments, the method includes changing the angle between the longitudinal axis of the jib and the lateral axis. Changing of the angle can change horizontal distancing of the load from the proximal side of the jib. The changing of this angel can include by virtue of rotating a distal rotating beam which is rotatably mounted to the distal side of the jib, wherein the two distal hoisting locations are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis.

[0139] In some embodiments, the method includes retracting and extending the distal rotating beam (for adjusting in size) for changing the lateral distance between the two distal hoisting locations.

[0140] In accordance with an embodiment of the present invention, the method includes stabilizing a support module to the building or proximate to the building wall.

[0141] The method may further include mounting a jib, defining a longitudinal axis, at a proximal side thereof on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening.

[0142] The method may further include hanging two hoisting elements respectively from two distal hoisting locations spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the distal hoisting locations including a fulcrum location and a counterweight location.

[0143] The method may further include hanging a fly beam on the two hoisting elements, wherein a cantilever of the fly beam extends beyond the fulcrum location toward the building when the fly beam is moved to approach the building.

[0144] The method may further include connecting or disposing a counterweight to the fly beam in the vicinity of the counterweight location.

[0145] The method may further include hoisting and releasing the load, by a load securing member secured to the cantilever at a load securing location positioned outwardly from the fulcrum location.

[0146] The method may further include positioning, hoisting, and balancing the fly beam by rotating the jib horizontally with a slewing unit configured to move the distal side of the jib along an arcuate path spanning between a distal arc location operational for depositing, removing and hoisting the load in a distal location distanced away from the building wall, and a proximal arc location operational for depositing, removing and hoisting the load withing the building, e.g., wherein the cantilever and the load are inserted and retracted through the opening.

[0147] The method may further include depositing the load in an internal location in the building or removing the load from the building by rotating the distal side of the jib to respectively insert or retract a cantilever portion which includes the load securing location, the load securing member, and a hoisted load - if secured to the load securing member, and respectively releasing the load when laid in the internal location from the load securing member for depositing the load in the building or securing the load to the load securing member for removing the load from the building.

[0148] The method may further include removing the load from an external location outside the building wall or depositing the load in the external location by rotating the distal side of the jib to the distal location, and respectively securing the load to the load securing member for removal of the load from the external location or releasing the load when laid in the external location from the load securing member for depositing of the load in the external location. The illustrated components of the drawings are exemplary and variations are contemplated to be within the scope of the present disclosure. For example, the numbers of components may be greater or fewer than as described and the types of components may be different than as described. Other variations and applications are contemplated to be within the scope of the present disclosure.

[0149] Accordingly, systems, apparatuses, devices, and methods for depositing and removing of a load through an opening in a building wall have been described herein. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of aspects of the disclosed technology. However, it is apparent to one skilled in the art that the disclosed technology can be practiced without using every aspect presented herein.

[0150] Different aspects are disclosed herein. Features of certain aspects can be combined with features of other aspects, thus certain aspects can be combinations of features of multiple aspects.

[0151] While several embodiments of the disclosure have been described herein and / or shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.

Claims

CLAIMS1 . A balanced cantilevered feeding apparatus for depositing and removing of a load through an opening in a building wall, comprising a rotatable jib configured to be mounted on or beside the building and defining a longitudinal jib axis; and a fly beam hanging from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal jib axis, wherein a first hoisting element hanging from a fulcrum hoisting location of a first jib portion is coupled to a fly beam fulcrum location of the fly beam, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion is coupled to a fly beam counterweight location of the fly beam, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, and wherein the fly beam is configured to connect to a counterweight at the fly beam counterweight location; the fly beam comprising a cantilever, extending from the fly beam fulcrum location away from the fly beam counterweight location, the cantilever configured for securely receiving the load, wherein when the jib is rotated for depositing and removing the load through the opening, the cantilever extends from the fly beam fulcrum location toward the opening.

2. The balanced cantilevered feeding apparatus of claim 1 , comprising a support module for stabilizing the apparatus to the building or proximate to the building wall.

3. The balanced cantilevered feeding apparatus of claim 2, wherein the support module comprises a frame for securing to the building wall or column and at least one diagonal support beam for supporting the module in a balanced position.

4. The balanced cantilevered feeding apparatus of claim 2, wherein the support module comprises a tower crane mast mounted to the building wall or column and / or supported on the ground.

5. The balanced cantilevered feeding apparatus of claim 2, comprising a slewing unit mounted on the support module for horizontally rotating the jib.

6. The balanced cantilevered feeding apparatus of claim 2, wherein the jib is mounted at a proximal side thereof on the support module, and a distal side of the jib protrudes from the vertical projection of the building wall beside the opening.

7. The balanced cantilevered feeding apparatus of claim 2, wherein the jib comprises a bifurcated jib comprising a first jib arm and a second jib arm separated from the first jib arm, wherein the first jib portion is at a distal end of the first jib arm, and the second jib portion is at a distal end of the second jib arm, wherein the first jib arm and the second jib arm are pivotally mounted to the support module and operational for turning to retractably split apart for increasing the lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location.

8. The balanced cantilevered feeding apparatus of claim 7, wherein the first hoisting element and the second hoisting element are configured to change hoist height.

9. The balanced cantilevered feeding apparatus of claim 7, wherein the fly beam is movable along the jib.

10. The balanced cantilevered feeding apparatus of claim 1 , wherein the fly beam is retractably extendable to accommodate a change of the lateral distance "f" between the two distal hoisting locations.1 1 . The balanced cantilevered feeding apparatus of claim 1 , wherein the cantilever is retractably extendable for changing the distance between the fly beam fulcrum location and a load securing location in the cantilever.

12. The balanced cantilevered feeding apparatus of claim 1 , comprising a load securing member mounted on the cantilever at a load securing location, the load securing member operational for engaging and hoisting the load, allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the jib to insert or retract the cantilever including the load securing location through the opening into and out of the building together with the load if secured to the load securing member.

13. The balanced cantilevered feeding apparatus of claim 1 , comprising a counterweight coupled with the fly beam at the fly beam counterweight location.

14. The balanced cantilevered feeding apparatus of claim 1 , wherein when the jib is rotated, the distal side of the jib protrudes from the vertical projection of the building wall beside the opening, and is moved along an arcuate path external to the building, spanning between (i) a distal arc location, for depositing, removing and hoisting a load away from the building wall, and (ii) a proximal arc location, for depositing and removing the load through the opening in the building wall.

15. The balanced cantilevered feeding apparatus of claim 1 , wherein the jib comprises a tiltable luffing jib, configured to adjust an inclination thereof.

16. The balanced cantilevered feeding apparatus of claim 1 , wherein the jib is retractably extendable.

17. The balanced cantilevered feeding apparatus of claim 1 , wherein the jib comprises a distal rotating beam which is rotatably mounted to the distal sideof the jib, wherein the first jib portion and the second jib portion are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis, wherein rotation of the beam changes an angle between the longitudinal axis of the jib and the lateral axis.

18. The balanced cantilevered feeding apparatus of claim 17, wherein the distal rotating beam is retractably extendable for changing the lateral distance between the two distal hoisting locations.

19. A balanced cantilevered feeding apparatus for depositing and removing of a load through an opening in a building wall, comprising: a support module for stabilizing the apparatus to the building or proximate to the building wall; a rotatable jib defining a longitudinal jib axis, the jib mounted at a proximal side thereof on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening; a slewing unit mounted on the support module for horizontally rotating the jib to move the distal side of the jib along an arcuate path spanning between a distal arc location operational for depositing, removing and hoisting a load away from the building wall, and a proximal arc location for depositing and removing the load through the opening in the building wall; two hoisting elements respectively hanging from two distal hoisting locations of the jib spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the two hoisting elements comprising a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion; a fly beam hanging from the two distal hoisting locations of the jib, wherein the first hoisting element is coupled to a fly beam fulcrum location of the fly beam, and the second hoisting element is coupled to a fly beam counterweight location of the fly beam, such that a lateral distance "e"between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance "f" between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, the fly beam configured to connect to a counterweight at the fly beam counterweight location, the fly beam comprising:(i) a cantilever extending from the fly beam fulcrum location and away from the fly beam counterweight location, the cantilever configured for securely receiving the load, wherein when the jib is rotated by the slewing unit to move the distal side of the jib along the arcuate path toward the proximal arc location, the cantilever extends from the fly beam fulcrum location toward the opening; and;(ii) a load securing member mounted on the cantilever at a load securing location positioned outwardly from the fly beam fulcrum location and operational for engaging and hoisting the load for allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the distal side of the jib to insert or retract a cantilever portion, which includes the load securing location, through the opening, into and out of the building, together with the load if secured to the load securing member; and a counterweight, coupled with the fly beam at the fly beam counterweight location.

20. A method for depositing and removing of a load through an opening in a building wall, the method comprising: mounting a rotatable jib on or beside the building, wherein the jib defines a longitudinal jib axis; hanging a fly beam from two distal hoisting locations of the jib along a lateral axis crossing a vertical projection of the longitudinal jib axis, and positioning, hoisting and balancing the fly beam by two hoisting elements hanging from the two distal hoisting locations, by coupling a fly beam fulcrum location of the fly beam to a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and coupling a fly beam counterweightlocation of the fly beam to a second hoisting element hanging from a counterbalance hoisting location of a second jib portion, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, and the fly beam comprising a cantilever extending from the fly beam fulcrum location away from the fly beam counterweight location, wherein when the jib is rotated for depositing and removing the load through the opening, the cantilever extends from the fly beam fulcrum location toward the opening; coupling a counterweight to the fly beam at the fly beam counterweight location; securing or releasing the load to or from the cantilever; rotating the jib to insert or extract the cantilever through the opening into the building, together with the load if secured to the cantilever; and depositing or removing the load in or from the building.21 . The method of claim 20, comprising stabilizing the apparatus to the building or proximate to the building wall by a support module.

22. The method of claim 21 , wherein the stabilizing comprises securing the support module to the building wall by a frame and supporting the frame in a balanced position by at least one diagonal support beam.

23. The method of claim 21 , wherein the support module comprises a tower crane mast and wherein the stabilizing comprises mounting the mast to the building wall and / or supporting the mast on the ground.

24. The method of claim 21 , wherein the mounting comprises mounting the jib at a proximal side thereof on the support module, wherein a distal side of the jib protrudes from the vertical projection of the building wall beside the opening.

25. The method of claim 21 , wherein the rotating comprises horizontally rotating the jib by a slewing unit which is mounted on the support module.

26. The method of claim 20, wherein the positioning, hoisting, and balancing comprises changing hoist height by the two hoisting elements.

27. The method of claim 20, wherein the positioning, hoisting, and balancing comprises moving the fly beam along the jib.

28. The method of claim 20, comprising extending and retracting the fly beam to accommodate a change of the lateral distance "f" between the two distal hoisting locations.

29. The method of claim 21 , wherein the jib comprises a bifurcated jib comprising a first jib arm and a second jib arm separated from the first jib arm, wherein the first jib portion is at a distal end of the first jib arm, and the second jib portion is at a distal end of the second jib arm, wherein the first jib arm and the second jib arm are pivotally mounted to the support module and operational for turning to retractably split apart for increasing the lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location.

30. The method of claim 20, comprising extending and retracting the cantilever for changing the distance between the fly beam fulcrum location and a load securing location in the cantilever.31 . The method of claim 20, comprising: mounting a load securing member on the cantilever at a load securing location, the load securing member operational for engaging and hoisting the load and allowing depositing and removing the load through the opening in the building wall when the fly beam is moved by rotating the jib; and inserting or retracting the cantilever including the load securing location through the opening into and out of the building together with the load ifsecured to the load securing member, by moving the fly beam, by rotating the jib.

32. The method of claim 20, comprising coupling a counterweight with the fly beam at the fly beam counterweight location.

33. The method of claim 20, wherein the rotating comprises moving the distal side of the jib to protrude from the vertical projection of the building wall beside the opening, and to move along an arcuate path external to the building, spanning between (i) a distal arc location, for depositing, removing and hoisting a load away from the building wall, and (ii) a proximal arc location, for depositing and removing the load through the opening in the building wall.

34. The method of claim 20, comprising tilting the jib to change its inclination, wherein the jib comprises a tiltable luffing jib.

35. The method of claim 20, comprising retracting and extending the jib.

36. The method of claim 20, comprising changing an angle between the longitudinal jib axis and the lateral axis, by rotating a distal rotating beam which is rotatably mounted to the distal side of the jib, wherein the first jib portion and the second jib portion are disposed on the distal rotating beam and are spaced apart from one another along the lateral axis.

37. The method of claim 36, comprising retracting and extending the distal rotating beam for changing the lateral distance between the two distal hoisting locations.

38. A method for depositing and removing of a load through an opening in a building wall, the method comprising: stabilizing a support module to the building or proximate to the building wall;mounting a jib, defining a longitudinal jib axis, at a proximal side of the jib on the support module, wherein a distal side of the jib can protrude from the vertical projection of the building wall beside the opening; hanging two hoisting elements respectively from two distal hoisting locations of the jib spaced apart from one another along a lateral axis crossing, at an angle, a vertical projection of the longitudinal axis at a distal side of the jib, the two hoisting elements comprising a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and a second hoisting element hanging from a counterbalance hoisting location of a second jib portion; hanging a fly beam from the two distal hoisting locations, and positioning, hoisting, and balancing the fly beam by the two hoisting elements hanging from the two distal hoisting locations, by coupling a fly beam fulcrum location of the fly beam to a first hoisting element hanging from a fulcrum hoisting location of a first jib portion, and coupling a fly beam counterweight location of the fly beam to a second hoisting element hanging from a counterbalance hoisting location of a second jib portion, such that a lateral distance “e” between the fly beam fulcrum location and the fly beam counterweight location corresponds to a lateral distance “f” between the fulcrum hoisting location and the counterbalance hoisting location, and such that the fly beam is fixedly aligned laterally of the jib, wherein a cantilever of the fly beam extends beyond the fly beam fulcrum location and away from the fly beam counterweight location, wherein when the fly beam is moved to approach the building, the cantilever extends from the fly beam fulcrum location toward the opening; coupling a counterweight to the fly beam at the fly beam counterweight location; hoisting and releasing the load, by a load securing member secured to the cantilever at a load securing location positioned outwardly from the fly beam fulcrum location; positioning, hoisting, and balancing the fly beam by rotating the jib horizontally with a slewing unit configured to move the distal side of the jib along an arcuate path spanning between (i) a distal arc location, fordepositing, removing and hoisting the load in a distal location distanced away from the building wall, and (ii) a proximal arc location, for depositing, removing and hoisting the load withing the building; depositing the load in an internal location in the building or removing the load from the building by rotating the distal side of the jib to respectively insert or retract a cantilever portion which includes the load securing location, the load securing member, and a hoisted load, if secured to the load securing member, and respectively releasing the load when laid in the internal location from the load securing member for depositing the load in the building or securing the load to the load securing member for removing the load from the building; and removing the load from an external location outside the building wall or depositing the load in the external location by rotating the distal side of the jib to the distal location, and respectively securing the load to the load securing member for removal of the load from the external location or releasing the load when laid in the external location from the load securing member for depositing of the load in the external location.

39. A spreadable hoisting apparatus, comprising: a support module for stabilizing the apparatus to a building; a slewing unit mounted on the support module, for horizontally rotating the jib with respect to the support module, the slewing unit located on the building or beside the building in close proximity to the building; and a radial bifurcated jib mounted at its proximal end to, and radially extending from, the slewing unit such that an uninterrupted horizontal rotation of the jib outside the building, when disposed in close proximity beside the building, is allowed, the jib comprising two pivotal arms, each arm is pivotally mounted at its proximal side to the slewing unit and comprising a distal hoisting location at its distal side, the arms are operational to pivotally split apart for spreading the two respective distal hoisting locations and to pivotally converge for gathering the two respective distal hoisting locations.

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