JP2008180016A - Self-climbing overhead crane - Google Patents

Abstract

[PROBLEMS] To reduce the work of replacing an overhead crane applied to construction of a building.
A crane main body 5 in which a trolley is movably mounted on a traversing beam 5a constructed so as to straddle the construction area 1 and both ends of the traversing beam so that the crane main body travels above the construction area. And a pair of traveling rails 4 that can be fixed to a scaffold such as the frame scaffolding 2, and are supported by the scaffolding so that the traveling rail can be moved up and down at predetermined intervals. A plurality of masts 3 having climbing cylinders 3b for raising and lowering the traveling rail are provided to enable self-climbing.
[Selection] Figure 2

Description

  The present invention relates to an overhead crane installed at the time of construction of a building, and more particularly to a self-climbing overhead crane that can be gradually rearranged by itself as construction progresses.

Lifting means for lifting various materials and equipment is indispensable for building construction, and tower cranes are the most common for large-scale building construction. In the case of a building of a scale, for example, as shown in Patent Document 1 and Patent Document 2, a simple overhead crane may be installed using a frame scaffold.
In Patent Document 1, an all-weather-type temporary roof is installed on the upper part of a frame scaffolding installed around a building to be constructed, and an overhead crane that travels below is installed between the frame scaffolds on both sides. It is what I did.
In the one shown in Patent Document 2, an opening is secured at a key point of the frame scaffolding, and an overhead crane is deployed through a support member on the inside, and materials and equipment are carried in and out of the site through the opening. Is.
JP-A-6-146609 JP 2001-336289 A

When using an overhead crane with a simple structure as described above when constructing a small or medium-sized building, it may be possible to expect improvement in construction efficiency and construction cost compared to using a large-scale tower crane. There are many issues to be improved.
In other words, the conventional general overhead cranes as shown in Patent Documents 1 and 2 naturally need to be rearranged upward as the construction progresses. It is necessary to repeat the work of disassembling and reassembling the entire equipment including rails. Then, such a reordering operation is performed by hand only with simple equipment such as an electric chain block, for example, or another crane must be prepared separately for that purpose. A large amount of labor and expense are required for the reordering work.

In addition, since the overhead crane is installed below the temporary roof and the traveling rail is attached to the inside of the frame scaffolding, the frame scaffolding is sufficient to ensure sufficient suspension for the overhead crane in the upper space of the construction area. In some cases, it may be necessary to increase the required height of the scaffold more than necessary, which may increase the construction costs related to the scaffolding.
Further, in the one shown in Patent Document 2, since an opening is provided in the frame scaffold, the original function of the frame scaffold is lost at the position of the opening. Therefore, another scaffold is appropriately provided there if necessary. This extra work is also required.

  From the above, overhead cranes such as those shown in Patent Documents 1 and 2 have not been widely used at the present time, although they are recognized as being useful for construction of small and medium-sized buildings. The actual situation is that various improvement measures are desired.

  The invention according to claim 1 is a self-climbing type overhead crane that is supported and installed on a scaffolding installed around a construction area during construction of a building, and is gradually relocated upward as construction progresses. A crane main body in which a trolley is mounted so as to be able to travel on a traverse beam laid so as to straddle the upper side of the area, and both ends of the traverse beam are supported to be able to travel so that the crane main body travels above the construction area And a pair of traveling rails that can be fixed to the scaffold, and supported by the scaffold so as to be able to move up and down at a predetermined interval on the upper portion of the traveling rail. And a plurality of masts each having a climbing cylinder.

  The invention according to claim 2 is the self-climbing type overhead crane according to claim 1, wherein the mast is supported at predetermined intervals on the scaffolds installed on both sides in the width direction of the construction area, and is erected. The upper end of the mast protrudes on the scaffold, and the traveling rail is supported on the upper end of the mast so that the traveling rail is installed along the longitudinal direction of the construction area at the top of both scaffolds. The crane main body is constructed in such a manner that the crane main body travels in the longitudinal direction of the construction area.

  The invention according to claim 3 is the self-climbing type overhead crane according to claim 2, wherein there is a loading area for lifting the object to be transported outside the scaffolding installed on both sides in the width direction of the construction area. As a crane body, a crane body for picking up the object to be transported from the loading area into the building and a crane body for transporting the object to be transported in the construction area are provided. Among these crane main bodies, at least the crane main body for loading is a suspension type crane main body that travels with the traverse beam suspended from the traveling rail and the trolley suspended from the traverse beam. The tip of the traverse beam is projected to the outside of the scaffold over the running rail and to the upper position of the loading area. Li wherein the is is configured to be run.

  A fourth aspect of the present invention is the self-climbing overhead crane according to any one of the first to third aspects of the present invention, wherein an elevating bracket that can be moved up and down by a climbing cylinder is mounted on an upper portion of the mast. A travel rail is supported by the bracket, and a journal jack for supporting a lifting load can be interposed between the lifting bracket and the scaffold.

  The invention according to claim 5 is the self-climbing type overhead crane according to any one of claims 1 to 4, wherein the mast is erected while being supported by a constructed frame in place of the scaffold. It is characterized by.

  A sixth aspect of the present invention is the self-climbing overhead crane according to any one of the first to fifth aspects, wherein a guide frame that supports the mast is installed on the scaffold or an already constructed frame instead. The guide frame is provided with a guide roller for supporting the mast so as to be slidable in the vertical direction, and a hook engaging with the guide frame is detachably provided at the lower part of the mast. .

  According to the present invention, the mast capable of self-climbing is incorporated into the scaffold, and the entire overhead crane is lifted with respect to the scaffold by the self-climbing operation by the mast, so that it can be replaced. The work of disassembling and reassembling the crane body and the traveling rail every time the refilling is performed like a crane can be omitted, and the reworking work can be greatly reduced.

  In particular, by setting the cargo collection area on the wife side and running the crane body in the longitudinal direction of the construction area, it is possible to efficiently carry out the cargo collection work and the conveyance work over the entire construction area with a single crane body. it can.

  In addition, it is possible to set the loading area to the side of the construction area by using a suspension type crane body for loading, and use it together with the crane body for transportation to transport the entire construction area. It can be done without hindrance.

  In addition, by supporting the traveling rail via the lifting bracket on the upper part of the mast and interposing the journal jack between the lifting bracket and the scaffold, the lifting load can be stably supported by the scaffold, There is no concern that a large lifting load directly acts on the mast as an eccentric load, and the level of the entire running rail can be easily and accurately secured by adjusting each journal jack.

  In addition, by supporting the mast in place of the scaffold with respect to the already constructed frame, it is possible to install the overhead crane without any trouble even if there is no scaffold at the position where the mast should be installed or the scaffold is omitted. Is possible.

  Furthermore, the mast is supported by a guide frame with respect to the scaffold or the already constructed frame, a guide roller is provided on the guide frame, and a hook that engages with the guide frame is detachably provided on the lower part of the mast. The load can be stably supported via the guide frame, and can be raised as it is while supporting the mast during the refilling operation.

An embodiment of the overhead crane of the present invention will be described with reference to FIGS.
The overhead crane according to the present embodiment has a planar shape that is long in one direction (girder direction), and is applied at the time of construction of a medium-rise building having a height of, for example, about 10 stories. As shown in the figure, the structure itself is configured so that it can be reordered using a scaffold installed around the construction area 1 over the entire circumference.

In other words, when constructing a building, a temporary scaffolding is installed so as to surround the surrounding area, but as a scaffolding, a framework scaffolding mainly composed of a prescribed frame, cloth frame and brace is used, and the construction progresses. Accordingly, in the present embodiment, a plurality of masts 3 are predetermined on the frame scaffold 2 installed on both sides in the width direction (span direction) of the construction area 1. Basically, the traveling rails 4 are installed at intervals above the mast 3 so as to be movable up and down, and the crane body 5 is installed between the traveling rails 4 on both sides.
Then, the mast 3 is gradually raised in accordance with the start of the frame scaffold 2 as the construction progresses, and the traveling rail 4 and the crane body 5 are gradually raised as they are, and the entire overhead crane is refilled. As a result, the operation of disassembling and reassembling the traveling rail 4 and the crane body 5 each time the refilling is performed can be greatly reduced.

  As shown in FIGS. 1 to 2, the mast 3 is mainly composed of a mast main body 3a made of a square steel pipe or the like, and a climbing cylinder 3b is attached to the side of the mast body 3a. The upper / lower bracket 3d attached to the upper part of the mast main body 3a is connected to the upper part of the mast main body 3a, and the upper / lower bracket 3d is moved up and down with respect to the mast main body 3a by operating the climbing cylinder 3b. The required stroke of the climbing cylinder 3b needs to be at least the height of one step of the frame scaffold 2; however, when the multiple steps of the frame scaffold 2 are started up by one reworking operation, the number of steps is required. It is preferable to have a lifting stroke corresponding to the height of the minute.

The mast 3 can be incorporated into and supported by the frame scaffold 2 using an appropriate temporary material such as a single pipe, and may be appropriately reinforced as necessary. In the present embodiment, FIG. As shown in detail in (c), a support mechanism is provided in which a guide frame 6 is installed between the building frames 2a of each step of the frame scaffold 2 and the mast 3 is arranged and supported inside the center portion thereof. Adopted.
In the support mechanism, a guide roller 6a for supporting the mast body 3a from the periphery is attached to the inside of the guide frame 6, and the guide roller 6a always effectively prevents the mast body 5a from being overturned while refilling. The mast body 5a can be raised as it is.
Further, as shown in FIG. 2 (c), a collar 6b is detachably attached to the lower end portion of the mast main body 5a. Normally, the collar 6b is engaged with the lowermost guide frame 6. The load of the entire overhead crane can be supported by the frame scaffold 2 from the mast body 5a via the eave 6a and the guide frame 6, and when the mast 3 is replaced, only the eave 6b is removed. The mast 3 can be easily raised.

  As shown in FIG. 1, the upper end portion of the mast 3 protrudes upward from the top portion of the frame scaffold 2, and the traveling rail 4 is integrally attached to the lifting bracket 3d attached thereto. The traveling rail is installed at the top of the frame scaffold 2. Then, by raising the lifting bracket 3d by the climbing cylinder 3b, the traveling rail 4 is also lifted together with the lifting bracket 3d, and the crane body 5 installed between the traveling rails 4 is also lifted as it is. .

As shown in FIG. 1, the crane body 5 includes a transverse beam 5a installed between the traveling rails 4 and a trolley 5b that travels along the transverse beam 5a.
The transverse beam 5a in the present embodiment is composed of a main beam 5aa made of a light steel truss of a simple assembly type and a trolley beam 5ab made of I-type steel or the like that is attached to the lower part of the beam 5a and supports the trolley 5b so that it can run. Both ends of the main beam 5aa are supported on the traveling rail 4 via an overhead saddle 5c so that the main beam 5aa can travel in the length direction (running direction), and the trolley 5b extends in the length direction (span of the trolley beam 5ab). 3) and lifting up and down by operating the winch 5d mounted on the main beam 5aa, the various materials are lifted from the cargo collection area 7 set on the wife side of the construction area 1 as shown in FIG. It can be efficiently transported to a desired position in 1.

As shown in FIG. 1, a journal jack 8 is interposed between the elevating bracket 3d attached to the upper portion of the mast 3 and the upper surface of the frame scaffold 2 so that a lifting load is applied from the traveling rail 4 to the elevating bracket 3d. In addition to being supported by the frame scaffold 2 via the journal jack 8, not only can the lifting load be stably supported by the entire frame scaffold 2, but the large lifting load is eccentric with respect to the mast 3. There is no concern of acting directly as a load, and therefore the strength and required cross section of the mast body 3a can be saved.
Even if the level of the upper surface level of the frame scaffold 2 is not sufficient, the level of the entire traveling rail 4 can be easily and accurately secured by adjusting the individual journal jacks 8 correspondingly. can do.

  The overhead crane of the present embodiment can be changed by self-climbing when the mast 3 itself operates in a so-called scale, and the change-over operation procedure is shown in FIGS.

FIG. 4 shows a state immediately before the crane main body 5 performs self-climbing, that is, a refilling operation for extending the frame scaffold 2 upward after completion of the construction on the predetermined floor and a reworking operation of the overhead crane associated therewith. It shows the state when it is time to do it.
In this state, the entire overhead crane including the mast 3 is supported by the frame scaffold 2, and the lifting bracket 3 d is positioned at the top of the mast body 3 a with the climbing cylinder 3 b extended. As described above, the journal jack 8 is interposed between the lifting bracket 3d and the frame scaffold 2. In order to prevent the crane body 5 from moving carelessly, the transverse beam 5a is locked to the traveling rail 4 at an appropriate position, and the trolley 5b is locked to the transverse beam 5a.

  In order to perform climbing from this state, first, the climbing cylinder 3b is slightly extended to remove the journal jack 8, the lifting bracket 3d and the traveling rail 4 are slightly lifted, the journal jack 8 is removed, and then the climbing cylinder 3b. Is retracted, the lifting bracket 3d is pulled down, and it is directly supported on the frame scaffold 2 and connected and fixed as appropriate.

Next, the collar 6b is pulled out from the lower part of the mast body 5a to release the support of the mast 3 by the frame scaffold 2 and the load of the mast 3 is deposited on the upper part of the frame scaffold 2 through the lifting bracket 3d.
When the climbing cylinder 3b is retracted in this state, the climbing cylinder 3d connected to the tip of the piston rod 3c is fixedly connected to the frame scaffold 2, so that the climbing cylinder as shown in FIG. The mast main body 3a is pulled up together with 3b and rises relative to the frame scaffold 2.

Each mast body 3a is lifted by a predetermined stroke (at least a distance corresponding to the height of one step of the frame scaffold 2), a flange 6b is attached to the lower end of the mast body 3a, and the load is again applied to the frame scaffold 2 Support by. Then, after all the masts 3 are brought into that state, if all the climbing cylinders 3b are extended simultaneously in synchronism, a reaction force is taken from the frame scaffold 2 as shown in FIG. Are pushed up all at once in synchronism with each other, and as a result, the traveling rails 4 on both sides and the entire crane body 5 installed between them are raised in a horizontal posture.
Therefore, as shown in FIG. 7, a new frame scaffold 2 having a predetermined number of steps (only one in the illustrated example) is assembled on the existing frame scaffold 2 and assembled to extend the frame scaffold 2 upward. If a journal jack 8 is interposed between the brackets 3d and the entire load is stored in the post-replacement frame scaffold 2 via the journal jack 8, the remodeling operation is completed as in FIG. A sufficient suspension allowance is newly secured below the crane body 5.

  As described above, the overhead crane according to the present embodiment incorporates the mast 3 capable of self-climbing into the frame scaffold 2 and raises the entire overhead crane as it is with respect to the frame scaffold 2 by the self-climbing operation by the mast 3. Since it is configured to be replaced, the work of disassembling and reassembling the crane body 5 and the traveling rail 4 each time when reordering is performed as in this type of conventional overhead crane can be omitted, greatly reducing the reordering work. be able to.

  In addition, when dismantling the frame scaffold 2 after the completion of construction, it may be possible to start dismantling the frame scaffolding 2 after dismantling and removing all of the crane body 5, the running rail 4, and each mast 3. If only 5 is dismantled, each mast 3 and traveling rail 4 can be lowered simultaneously in parallel with the dismantling and removal of the frame scaffold 2 by the reverse procedure of the above, There is no need to dismantle and dismantle at high altitudes, and it can be done easily and safely on the surface. Of course, the traveling rail 4 as well as the crane main body 5 is dismantled and removed at a high place, and only each mast 3 can be lowered to the ground surface.

  In addition, the overhead crane according to the present embodiment can not only reduce the refilling work but also support the traveling rail 4 on the top of the frame scaffold 2 so that it is naturally sufficient above the construction area 1. The suspension allowance can be secured, and therefore the required height of the frame scaffold 2 is not increased more than necessary to secure the suspension allowance as in the conventional ones shown in Patent Documents 1 and 2, and the frame scaffold 2 Therefore, it is not necessary to provide an opening for picking up the cargo at this important point, and efficient construction is possible in this respect.

  Moreover, except that the mast 3 is provided with the climbing cylinder 3b, the components of the conventional general overhead crane and general-purpose temporary materials can be used as they are, and the support of the mast 3 with respect to the frame scaffold 2 and the reinforcement thereof are also simplified. Because it can be done, the cost increase by installing this is insignificant, and the construction cost can be reduced and the construction period can be shortened by greatly improving the workability compared to using a tower crane or a conventional overhead crane. We can plan enough.

  Although one embodiment of the present invention has been described above, the above embodiment is merely a preferred example, and the present invention is not limited to the above embodiment, and various design modifications such as those listed below are possible. Application is possible.

The required number of masts 3 and their installation intervals, the climbing stroke of the climbing cylinder 3b, and other specifications are the overall size and lifting load of the overhead crane, the length of the traveling rail 4 and the strength of its members, the structure of the entire scaffold and its reordering Needless to say, considering the work plan and other various conditions, it may be set as appropriate so that safe and efficient replacement is possible while stably supporting the entire overhead crane.
If the climbing cylinders 3b are provided in all the masts 3 as in the above embodiment, the capacity of the individual climbing cylinders 3b can be minimized, but the whole can be moved up and down with good balance and stability. For example, the climbing cylinder 3b may be attached to only a part of the mast 3, for example, the climbing cylinder 3b is installed on every other mast 3, or two masts that support both ends of the running rail 4 are supported. It is also conceivable to install a large-capacity climbing cylinder 3 b only in 3. In that case, since the mast 3 to which the climbing cylinder 3b is not attached cannot perform self-climbing by itself, the upper end of the mast 3 is connected to the traveling rail 4 and the other mast 3 is connected. The mast 3 may be lifted through the traveling rail 4 that is moved up and down by the movement.

In the above embodiment, the most common framework scaffold 2 is used as a scaffold for installing and supporting the mast 3, which is usually realistic and optimal, but the scaffold in the present invention incorporates the mast 3. As long as it can support and can support the load of the entire overhead crane, the structure and form of the scaffolding are arbitrary as long as it is supported, and is not necessarily limited to the use of the frame scaffolding 2 but is erected from the ground surface. The present invention can be similarly applied not only to the scaffolding but also to the suspended scaffolding that is installed by being supported by being hung from the installed frame.
In addition, depending on the size and form of the building to be constructed, the type of scaffolding and its installation pattern, it is possible to install the mast 3 on a pre-constructed frame (for example, a column, beam or slab). For example, an appropriate support mechanism such as the guide frame 6 in the above-described embodiment may be interposed between the completed frame and the mast 3 so as to support the mast 3 so as to be movable up and down with respect to the completed frame. If the mast 3 is to be supported on the already constructed frame, the scaffold cannot support the mast 3 stably, the scaffold cannot be installed at the position where the mast 3 should be installed, or the scaffold is omitted. Even so, it is possible to install the overhead crane without hindrance.

The crane body 5 in the above embodiment is of a type in which the transverse beam 5a travels on the traveling rail 4 by the overhead saddle 5c, and the traveling range of such an overhead crane body 5 is restricted by the mast 3. However, instead of this, the traverse beam 5a is suspended from the traveling rail 4 by a suspension type (suspension type) saddle 5e as shown in FIG. It is also possible to employ a suspension type crane main body 5 of a type that is driven in the manner described above.
However, in such a suspension type crane main body 5, the traveling range is limited due to interference with the mast 3 when the tip of the traverse beam 5 a protrudes outside the traveling rail 4, as shown in FIG. 9. The traverse beam 5a needs to be long enough to fit inside the mast 3.

On the other hand, when the overhead crane main body 5 is caused to travel in the longitudinal direction (girder direction) of the construction area 1 as in the above embodiment, the travel range of the trolley 5b is restricted between the travel rails 4 on both sides. Unloading can be performed only from the wife side, and therefore the position of the unloading area 7 can only be set on the wife side of the construction area 1 as in the above embodiment, and unloading from the side is impossible.
However, since the suspension type crane main body 5 as shown in FIG. 8 is adopted, it is possible to carry out loading from the side, and examples thereof are shown in FIGS. 11, the overhead crane body is denoted by reference numeral 5A, and the suspension crane body is denoted by reference numeral 5B.

In the embodiment shown in FIGS. 10 to 11, the loading area 7 is set outside the frame scaffold 2 installed on the side of the building, and the distal end portion of the transverse beam 5 a of the suspension type crane main body 5 </ b> B is used as the frame scaffold 2. Projecting outward and extending up to above the loading area 7. According to this, since the trolley 5b of the suspension type crane main body 5B can travel up to the upper side of the load pickup area 7, the load can be picked up without any trouble.
However, in this case, the traveling range of the crane body 5B is limited between two adjacent masts 3 due to the interference between the traverse beam 5a and the mast 3, and naturally the object to be conveyed can be conveyed over the entire construction area 1. Therefore, the suspension type crane main body 5B is mainly used for loading, and in addition, a general transport crane main body 5 for covering the entire construction area 1 is additionally provided.
That is, in addition to the suspension type crane main body 5B for loading, an overhead type crane main body 5A as shown in FIG. 10 or a suspension type crane main body 5B as shown in FIG. The suspension-type crane body 5B for loading is used to pick up the cargo from the loading area 7, transport the object to be transported within the travelable range and take it into the construction area 1, and then the other crane for general transportation. The crane main body 5 (overhead type crane main body 5A or suspension type crane main body 5B) is configured to further convey it to a desired position.
In this way, by using two crane bodies 5 for unloading and general transport together, and wrapping a part of the traveling range in the direction of traversing and delivering the object to be transported, It is possible to achieve both loading and transportation over the entire construction area, and the loading area 7 can be set to an optimum position according to the site shape and building shape.

It is a front view which shows schematic structure of the overhead crane which is one Embodiment of this invention. It is sectional drawing which shows a side view and the principal part detail same as the above. FIG. It is a figure which shows a reordering work procedure similarly. It is a figure which shows a reordering work procedure similarly. It is a figure which shows a reordering work procedure similarly. It is a figure which shows a reordering work procedure similarly. It is a side view which shows schematic structure of the overhead crane which is other embodiment of this invention. FIG. It is a figure which shows the installation pattern of the overhead crane which is further another embodiment of this invention. It is a figure which shows the installation pattern of the overhead crane which is further another embodiment of this invention.

Explanation of symbols

1 Construction area 2 Framework scaffolding (scaffolding)
2a Building frame 3Mast 3a Mast body 3b Climbing cylinder 3c Piston rod 3d Lifting bracket 4 Traveling rail 5 (5A, 5B) Crane body 5a Traverse beam 5aa Main beam 5ab Trolley beam 5b Trolley 5c Saddle (overhead type)
5d winch 5e saddle (suspension type)
6 Guide frame 6a Guide roller 6b ７ 7 Unloading area 8 Journal jack

Claims (6)

It is a self-climbing overhead crane that is supported and installed on a scaffolding installed around the construction area during construction of the building, and that is gradually relocated upward as construction progresses,
A crane body that has a trolley mounted on a traversing beam constructed so as to straddle the construction area; and
A pair of running rails that can be fixed to the scaffolding, while supporting the both ends of the traverse beam to run the crane body above the construction area,
A plurality of masts that are supported by the scaffolding and that support the traveling rail so that the traveling rail can be raised and lowered at a predetermined interval and that have climbing cylinders for raising and lowering the traveling rail are provided. A self-climbing overhead crane characterized by A self-climbing overhead crane according to claim 1,
The mast is supported by standing on the scaffolds installed on both sides in the width direction of the construction area at a predetermined interval, the upper end of the mast protrudes on the scaffold, and the running rail is supported on the upper end of the mast. The running rail is installed along the longitudinal direction of the construction area at the top of both scaffolds,
A self-climbing overhead crane, wherein the crane main body is constructed between the traveling rails so that the crane main body travels in the longitudinal direction of the construction area. A self-climbing overhead crane according to claim 2,
A loading area is set up to lift the object to be transported outside the scaffolding installed on both sides in the width direction of the construction area.
As the crane main body, a crane main body for taking in the object to be conveyed from the loading area into the building and a crane main body for conveying the object to be conveyed in the construction area are provided.
Among these crane bodies, at least the crane body for loading is a suspension-type crane body that travels with a traverse beam suspended from a traveling rail and a trolley suspended from the traverse beam. A self-climbing overhead crane, characterized in that the tip of the traverse beam protrudes beyond the running rail and protrudes to the outside of the scaffold so that the trolley can travel to a position above the loading area. A self-climbing overhead crane according to any one of claims 1 to 3,
A lifting bracket that can be lifted and lowered by a climbing cylinder is attached to the upper part of the mast, and a traveling rail is supported by the lifting bracket, and a journal jack for supporting a lifting load is provided between the lifting bracket and the scaffold. A self-climbing overhead crane characterized by being capable of being intervened. A self-climbing overhead crane according to any one of claims 1 to 4,
A self-climbing type overhead crane characterized in that a mast is supported and erected on a completed frame instead of a scaffold. A self-climbing overhead crane according to any one of claims 1 to 5,
A guide frame that supports the mast is installed in the scaffolding or a frame that has been constructed in place of the scaffold, and the guide frame is provided with a guide roller that supports the mast while being slidable in the vertical direction.
A self-climbing overhead crane, wherein a hook engaging with a guide frame is detachably provided at a lower portion of the mast.

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