JP2009007129A - Climbing crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a climbing crane suitably installable when a steel-frame building, a reinforced concrete building, or a steel-frame reinforced concrete building is constructed in a narrow space. <P>SOLUTION: A lift 4 is so structured as to be liftable along a mast 3 separately from a turning body 2. The lift 4 and a base 5 are extendable or foldable to retract to the length allowing them to pass between opening part beams 7, 7 on a pressure story and extend to the length necessary for placing them on the opening part beams 7 and supporting the load of the crane. The heights of crane frames are different to place and support the lift 4 and the base 5 on the opening part beams 7 on the same pressure story. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of a climbing crane in which a floor and a beam of a building are used as a reaction force and the entire climbing crane is transferred to an upper floor, and more specifically, a steel building, a reinforced concrete building, or a steel reinforced concrete building is constructed in a narrow area. The present invention relates to a climbing crane that can be suitably implemented.

In general, the climbing crane used at the construction site is a floor climbing method in which the entire climbing crane is transferred to the upper floor using the floor and beams of the building as a reaction force, and a mast climbing method in which the revolving body is raised while sequentially adding the mast. Is known.
In the mast climbing method, there are a case where the climbing crane is installed outside the building and a case where it is installed inside the building. When installing a climbing crane outside the building, a large crane with a large working radius that can cover the entire building is required, and the installation position is restricted depending on site conditions and building conditions, especially severe construction in narrow buildings . In addition, dismantling a large crane is time consuming and expensive and uneconomical. When installing a climbing crane in a building, there is a problem that a useless opening remains over the entire height of the building until the climbing crane is dismantled and removed.
On the other hand, the floor climbing method is excellent in that the installation location of the climbing crane can be selected at an advantageous position in the construction plan, and after the base is lifted together with the mast, the useless opening can be closed early. As a conventional technique of a climbing crane using this floor climbing method, for example, a climbing crane disclosed in Patent Document 1 below has a lifting device integrated with a revolving structure and a reaction force floor (N−) lower than the top floor (N floor). In the state where it is supported on the first floor), the base at the lower end of the mast is supported by a reaction force floor (N-2) below the support position of the revolving structure, and a load is alternately applied to the base and the lifting device. In this configuration, the mast, the base and the swivel body are lifted up.

  Moreover, the climbing crane described in Patent Document 2 is a temporary construction installed on the top floor of a steel frame construction, or on the top floor where a strength capable of supporting a climbing reaction force in a reinforced concrete construction or a steel reinforced concrete construction is developed. An elevating device that receives a climbing reaction force is temporarily fixed to the receiving beam, and the mast and the upper rotating body are raised by driving the elevating device, and the base at the lower end of the mast is raised to the floor of the uppermost floor. It is the structure fixed.

  Patent Document 3 below discloses a climbing crane in which a traveling carriage is attached to a revolving body separated from a mast, and a crane can be operated by traveling on a rail laid on an existing top floor. The mast separated from the revolving structure fixes and holds the base again on the existing lower floor.

  In the following Patent Document 4, the lifting wire provided on the jib is lifted and lifted by a lifting winch so that the same jib is lifted and locked by the winding wire suspended from the tip end side of the jib. Is moved up and down by winding or unwinding the hoisting wire with a hoisting winch, and at least one of the hoisting wire and the hoisting wire is supported and guided by a guide support, and the guide support is diverted to a jib of an auxiliary crane. However, a climbing crane configured to enable its own assembly and dismantling / removal work is disclosed.

JP 2004-59321 A JP 2000-327265 A Japanese Patent Publication No. 52-16288 Japanese Patent No. 3280662

  Since the climbing crane disclosed in the above-mentioned Patent Document 1 has a reaction force floor (N-1 floor) as a reaction force, the upper frame of the lifting device and the base are required as a lifting allowance, (N-3 floor) More useless openings remain. In addition, since the lifting device and the revolving structure are integrated, the revolving structure cannot be lifted unless the concrete strength of the reaction force floor (N-1 floor) is awaited, resulting in construction delay.

The climbing crane disclosed in Patent Document 2 is configured so that it can be moved up and down by separating the lifting device from the swiveling body. Therefore, the lifting device is lifted and supported so that the uppermost floor where the strength is expressed is supported as a reaction force floor. Can be made. In addition, because the base is raised to the same reaction force level as the lifting device, construction using the effective height of the mast can be advanced, the useless opening can be closed early, and the work period of finishing work can be shortened. .
However, since the elevating device and the base do not have, for example, an expansion / contraction or folding mechanism that can cope with various beam spans, when the mast, the base, and the swivel body are lifted, a temporary receiving beam that supports the elevating device and the base is provided in advance. It must be installed on the reaction floor. In addition, after climbing, it is necessary to remove the temporary support beam on the lower floor, which has been assigned to the base, and the cost and work process increase accordingly. Furthermore, climbing usually takes 1 to 2 days, and during that period, crane work is not possible. Therefore, the climbing is performed with the self-supporting height being increased to minimize the number of climbs. Therefore, the temporary opening usually exists over 5 to 6 floors, resulting in a delay in the start of finishing work on that floor.

  Since the climbing crane disclosed in Patent Document 3 is configured to leave the mast separated from the swivel body on the existing lower floor, a useless opening remains for a long time. Moreover, since it can drive | work only on the laid rail, a travel range is restrict | limited and usability is bad.

  The climbing crane disclosed in Patent Document 4 can be used only to the extent that the crane member in the vicinity of the auxiliary crane is lowered on the floor at the working radius as the auxiliary crane of the guide support that is diverted as a jib, and it is difficult to say that it is self-dismantling. In particular, it cannot contribute to the removal of jib.

  The objective of this invention is providing the climbing crane which can be implemented suitably when constructing a steel frame building, a reinforced concrete building, or a steel frame reinforced concrete building in a narrow ground.

  The next object of the present invention is to provide a climbing crane that can be easily traveled on the rooftop floor, can travel freely without being limited in travel range, and is extremely easy to use.

  It is a further object of the present invention to provide a climbing crane configured to be capable of self-disassembly when a steel building, a reinforced concrete building, or a steel reinforced concrete building is constructed in a narrow area.

As a means for solving the problems of the background art described above, a climbing crane according to the invention described in claim 1 is:
The crane 5 is operated by supporting the base 5 at the lower end of the mast 3 on the beam 7 'on the reaction force floor, and the lifting device 4 is supported on the opening beam 7 on the upper reaction force floor. In the climbing crane 1 that lifts the mast 3, the base 5, and the swivel body 2 by alternately receiving the load between the base 5 and the lifting device 4,
The lifting device 4 is configured to be lifted and lowered along the mast 3 separately from the swivel body 2.
The lifting device 4 and the base 5 are contracted to such a length that they can pass between the opening beams 7 and 7 of the reaction force floor, or are necessary to support the crane load by being moved onto the opening beams 7. It has a stretchable or foldable structure that extends to
The elevating device 4 and the base 5 are characterized in that the height of each crane mount 10 is configured to be long and short so as to be supported on the opening beam 7 of the same reaction force floor.

The invention described in claim 2 is a climbing crane according to the invention described in claim 1,
With the lifting device 4 attached to the rooftop and supported, the base 5 is raised to the rooftop together with the mast 3, and the rising mast 3 is sequentially disassembled and shortened. It is configured to be possible.

The invention described in claim 3 is a climbing crane according to the invention described in either claim 1 or 2,
The base 5 is raised to the rooftop floor together with the mast 3 while the lifting device 4 is supported on the rooftop floor, the mast 3 rising up is sequentially disassembled and shortened, and the crane 1 is further disassembled. The dismantling crane 12 is integrally attached to the crane 1 and can be self-dismantling.

  According to the climbing crane according to the first aspect of the present invention, the elevating device 4 and the base 5 are contracted to such a length that can pass between the opening beams 7 and 7 of the reaction floor, or the same opening beam. Since it has a telescopic or folding structure that extends up to the length necessary to support the crane load, even in a building where the space between the opening beams 7 and 7 is narrow, the space between the opening beams 7 and 7 It can be moved up and down, and can be suitably implemented when a steel building, a reinforced concrete building, or a steel reinforced concrete building is constructed, particularly in a confined narrow area. Of course, the lifting device 4 is configured so as to be lifted and lowered along the mast 3 separately from the revolving structure 2, so that the lifting device 4 can be lifted and supported on the reaction force floor. It is possible to proceed with construction utilizing the effective height of the mast 3. In addition, since the lifting device 4 and the base 5 are configured to be long and short so that each crane mount 10 can be supported on the opening beam 7 of the same reaction force floor, the opening is closed early. You can also

  According to the climbing crane according to the second and third aspects of the present invention, the base 5 is raised to the rooftop floor together with the mast 3, and the rising mast 3 is sequentially disassembled and shortened, and the wheel 11 is attached to the base 5. The mast 3 does not remain inside the building 13 and can be freely traveled on the rooftop floor without being limited in travel range, which is very convenient to use. . In addition, if the jib 6 is contracted or folded and traveled in a state where the overturning moment is reduced, it is possible to travel stably.

  Further, in a state where the lifting device 4 is supported on the roof floor, the base 5 is raised to the roof floor together with the mast 3, and the rising mast 3 is sequentially disassembled and shortened. Since the dismantling crane 12 having a working radius that can be dismantled is integrally attached to the crane 1 and configured to be capable of self dismantling, the dismantling crane 12 can dismantle and remove the crane 1 efficiently. it can. At this time, if the jib 6 is contracted or folded and then disassembled, the space required for disassembly can be reduced, and dismantling can be easily and quickly performed. Furthermore, if the climbing crane 1 configured to be able to travel is traveled to a place where it can be easily dismantled and the dismantling crane 12 is attached to the crane 1 to enable self disassembly, dismantling work can be further facilitated. .

  In the climbing crane of the present invention, the lifting device 4 is configured to be separated from the revolving body 2 and to be lifted and lowered along the mast 3. The lifting device 4 and the base 5 are contracted to such a length that they can pass between the opening beams 7 and 7 of the reaction force floor, or are moved onto the opening beams 7 to a length necessary to support the crane load. Extend or contract or fold structure. The height of each crane mount 10 is configured to be long and short so that the lifting device 4 and the base 5 can be supported on the opening beam 7 of the same reaction force floor.

Below, the climbing crane which concerns on a present Example is demonstrated based on drawing.
FIG. 1 is an overall view of a climbing crane 1 according to the present embodiment, and shows a state in which an elevating device 4 is supported on a roof floor and a base 5 is lifted up to the roof floor together with a mast 3.
The climbing crane 1 of the present embodiment also performs the crane work by supporting the base 5 at the lower end of the mast 3 on the beam 7 'on the reaction force floor, and also moves the lifting device 4 to the opening beam 7 on the upper reaction force floor. A floor climbing type climbing crane that lifts the mast 3, the base 5, and the swivel body 2 by alternately receiving the load between the base 5 and the lifting device 4 after being supported upward. The jib 6 that constitutes the climbing crane 1 is configured to be appropriately extendable or retractable when the crane 1 to be described later is run, when the crane 1 is disassembled, or when the revolving structure 2 is lifted.

  As shown in FIGS. 2A and 2B in an enlarged manner, the lifting device 4 includes a climbing frame 4a and a guide frame 4b that surrounds the mast 3, and a lifting cylinder 4c that connects the two. It is configured so as to be lifted and lowered along the mast separately from the revolving body 2. The climbing frame 4a and the base 5 are contracted to such a length that they can pass between the opening beams 7 and 7 of the reaction floor, or are necessary to move to the opening beams 7 to support the crane load. It is made into the expansion-contraction or folding structure extended to length. The elevating device 4 and the base 5 are configured so that the height of each crane mount 10 is long and short so as to be supported on the opening beam 7 of the same reaction force floor.

FIGS. 3A to 3D show a procedure for lifting the climbing crane 1 having the above-described configuration to an upper floor. FIG. 3A shows that the base 5 is supported by the crane mount 10 installed on the beam 7 'of the reaction force floor (N-2) and is directly above the reaction force floor (N-2). The stage where the crane mount 10 which supports the raising / lowering apparatus 4 and the base 5 was installed in the reaction force floor (N-1) is shown. The base 5 is firmly fixed on the crane mount 10 installed on the reaction force floor (N-2) by the anchor bolt 8 and the presser foot 9.
FIG. 3B shows that the contracted lifting device 4 is lowered along the mast 3 and extended at a height position where a space for installing the base 5 is provided, and the reaction force floor (N− The stage of 1) is fixed to and supported by an anchor bolt 8 and a presser foot 9 on the crane mount 10 on the opening beam 7.
FIG. 3 (c) shows that the contracted base 5 is lifted up to the height position of the space between the lifting device 4 and the opening beam 7 of the reaction floor (N-1) together with the mast 3, The figure shows a stage in which it is fixed to and supported by an anchor bolt 8 and a presser foot 9 on the crane mount 10 on the opening beam 7 of the reaction force floor (N-1).
FIG. 3 (d) shows a stage where the lifting device 4 from which the anchor bolt 8 and the presser foot 9 are removed is contracted and raised along the mast 3.
That is, by lowering the self-supporting height of the crane and making the temporary receiving beam unnecessary, the time required for climbing can be shortened to 1 to 2 hours as compared with the normal 1-2 days. As a result, the number of climbing operations increases, but it does not affect the overall construction process, and it is possible to close the useless opening earlier and start finishing work.
In addition, in FIG. 3 (a)-(d), the construction floor (N) is under construction of the structure and assumes a state that does not have the strength that can be supported by the crane. , This shows that you need to dive. Needless to say, if the construction floor (N) has a strength that can be supported, it is directly raised to the construction floor (N).

  Since the climbing crane 1 of the present embodiment has the above-described configuration, even if the gap between the opening beams 7 and 7 is narrow, the climbing crane 1 can be moved up and down between the opening beams 7 and 7. It can be suitably implemented when constructing a steel-frame building, a reinforced concrete building, or a steel-framed reinforced concrete building in a narrow and narrow area. The climbing crane 1 is preferably implemented with a configuration in which the number of masts 3 is reduced and the height is made as low as possible in order to further shorten the construction period and reduce the construction cost.

  FIG. 4 repeats the procedure of FIGS. 3A to 3D described above, raises the base 5 together with the mast 3 to the rooftop floor, with the lifting device 4 moved to the rooftop and supported. The mast 3 is a climbing crane which is sequentially disassembled and shortened, and is configured so that wheels 11 are attached to the base 5 and can freely travel on the rooftop floor. That is, the climbing crane 1 configured to be able to travel can be disassembled and removed after being moved to a place where the jib 16 of the dismantling mobile crane 15 installed outside the building 13 can reach and easily disassemble. , Dismantling work can be done easily, construction period can be shortened and construction cost can be reduced. Moreover, since the crane 1 can perform crane work even after moving, the construction area is expanded. Of course, the wheel 11 can be easily and quickly attached, and it is not necessary to lay a rail for traveling on the rooftop (the invention according to claim 2).

  FIG. 5A repeats the procedure of FIGS. 3A to 3D described above, and raises the base 5 together with the mast 3 to the rooftop floor in a state where the lifting device 4 is moved to the rooftop and supported. The climbing mast 3 is disassembled and shortened, and a dismantling crane 12 for disassembling the crane 1 is attached to the crane 1 in an integrated manner so that self-disassembling is possible. . Specifically, the jib 6 of the crane 1 is contracted or folded (see FIG. 5b), the dismantling crane 12 disassembles the crane 1, the mast 3 and the lifting device 4 (see FIG. 5c), and the outriggers. The dismantling crane 12 is dismantled by the grandchild crane 14 attached to 17 (see FIG. 5d), and the crane 1 can be dismantled and removed efficiently by the dismantling crane 12. Described invention).

  3 (a) to 3 (d) described above is repeated, and the base 5 is raised to the roof floor together with the mast 3 in a state where the lifting device 4 is moved to the roof floor and supported, and the mast 3 rising up. Are disassembled and shortened sequentially, and are configured to be able to run by attaching wheels 11 to the base 5, and further, a dismantling crane 12 for disassembling the crane 1 can be integrally attached to the crane 1 and can be self-disassembled. It is also possible to implement with the configuration described above. That is, the crane 1 configured to be able to travel is traveled to a place where it can be easily disassembled, the dismantling crane 12 is attached to the crane 1 and self disassembly is possible, and the dismantling work can be further facilitated.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments and can be implemented in various forms without departing from the gist of the present invention.

It is a front view which shows the climbing crane which concerns on this invention. A is an enlarged view taken along line II-II in FIG. B is a front view of A. FIG. It is process drawing which shows the procedure which raises the whole crane. (A) is explanatory drawing which shows the outline of the crane comprised so that driving | running | working was possible. (B) is the IV-IV arrow directional view of (a). (A)-(d) is explanatory drawing which shows the process of the dismantling operation | work of the crane comprised so that self-disassembly is possible.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Climbing crane 2 Revolving body 3 Mast 4 Lifting device 5 Base 6 Jib 7, 7 'Beam 10 Crane mount 11 Wheel 12 Crane for dismantling

Claims (3)

The crane is operated by supporting the base at the lower end of the mast on the beam on the reaction force floor, and the lifting device is supported on the opening beam on the upper reaction force floor. In a climbing crane that alternately receives loads and raises the mast, base, and swivel,
The lifting device is configured to be lifted and lowered along the mast separately from the swivel body,
The elevating device and the base are contracted to a length that can pass between the opening beams of the reaction force floor, or extend or extend to a length necessary to support the crane load by being moved onto the opening beams. is being done,
The climbing crane is characterized in that the lifting device and the base are configured so that the height of each crane mount is long and short so as to be supported on the opening beam of the same reaction force floor.   With the lifting device attached to the rooftop and supported, the base is raised to the rooftop together with the mast, and the rising mast is sequentially disassembled and shortened, and it is configured to be able to run with wheels attached to the base. The climbing crane according to claim 1, wherein the climbing crane is characterized.   With the lifting device attached to the rooftop and supported, the base is raised with the mast to the rooftop floor, the rising mast is sequentially disassembled and shortened, and a dismantling crane that further disassembles the crane, The climbing crane according to claim 1, wherein the climbing crane is integrally attached to the crane and can be self-disassembled.

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