JP2016137955A - Climbing Crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable installation of a climbing crane even in a basement floor of a narrow space, and reduce construction of a building side associated with the installation of the climbing crane by changing a shape of a core base on the way in conformity to a construction progress, and further save labor and time of planning and construction by reducing restrictions concerning the installation of the climbing crane.SOLUTION: A climbing crane includes a core base 10 provided at a base end of a mast 1 and enabling direct sewing to a pile 50 independently, and a folding leg part or stretchable leg part 112 detachably provided in the core base 10. The climbing crane is configured so that a posture can be changed in the middle of floor climbing using a lifting/lowering device 5 between a first posture of enabling the core base 10 to perform direct sewing to the pile 50 and a second posture supported in the floor of a building via the folding leg part or stretchable leg part 112 by mounting the folding leg part or stretchable leg part 112 to the core base 10.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a climbing crane having a crane main body installed at the top of a mast stacked up and down and having a lifting device capable of raising the mast.

  Conventionally, for example, as shown in Patent Document 1, a mast having a height capable of constructing steel frames for the number of construction floors of this section and having a foundation frame at the lower end, and a lifting device for raising the mast, A floor climbing method is known in which a climbing crane including a crane main body provided at the upper end of the mast is replaced according to the progress of the steel frame construction. In this method, the lifting device is raised to a position directly below the crane body, and the steel frame is advanced by the number of floors in this section, and then the climbing reaction force is applied to the top floor in the number of floors in this section. A step of lowering and temporarily fixing the device, and a step of driving the lifting device to raise the mast and the crane body at the upper end of the mast, and the base frame at the lower end of the mast to the floor of the uppermost floor to be fixed. Repeat the steel frame construction and climb the climbing crane to the top floor of the building.

  In such a floor climbing method, as described in Patent Document 2, a support beam of a gantry is fixed to a steel cross beam of a building under construction to support its own weight or the like. In this construction method, the receiving beam is configured to be stretchable.

Japanese Patent No. 4354046 Japanese Patent No. 25991979

  However, in the conventional floor climbing method such as Patent Document 2, the receiving beam can be reduced when the mast is lifted, but in the first place, the foundation is directly fixed on the basement floor without sufficient strength. Can not. Also, since the space is limited, the mast cannot be lifted with the receiving beam attached. For this reason, in the case of underground construction in a narrow space, it is necessary to construct using a mobile crane.

  In addition, even if the beam of the building changes, the gantry cannot be changed to another type and must be used as it is. Replacing the gantry on the building under construction is difficult due to its large size and weight.

  The present invention has been made in view of the above points, and the object of the present invention is to enable installation of a climbing crane even in a narrow space underground floor, and to perform construction from the basement floor to the top floor with one climbing crane. There is in making it possible. Moreover, the construction of the building side accompanying the installation of the climbing crane is reduced by changing the shape of the core base in the middle of the construction progress. Furthermore, it is to reduce the time and effort of planning and construction by reducing the restrictions on the installation of the climbing crane.

  In order to achieve the above object, the present invention is configured such that the posture can be changed by attaching / detaching the attachment / detachment leg portion to / from the core base during the floor climbing using the lifting device.

Specifically, in the first invention, on the premise of a climbing crane having a crane body installed at the top of the mast stacked up and down, and having a lifting device for raising and lowering the crane body along the mast,
The climbing crane is
A core base that is provided at the base end of the mast and can be sewn directly to a pile;
A detachable leg portion detachably provided on the core base,
A first posture in which the core base is directly sewn to the pile, and a second posture in which the demountable leg is attached to the core base and supported on the floor of the building via the demountable leg. It can be changed in the middle of floor climbing.

  According to the above configuration, for example, in underground construction, it is possible to work using a climbing crane by driving a highly rigid pile such as metal into the foundation and fixing the core base directly to the pile. . Then, when the building skeleton is completed to some extent, the core base is removed from the pile, the core base is lifted together with the lifting device, and the core base is joined to the detachable legs temporarily fixed to the floor of the building. Floor climbing can be done easily without changing. Thus, since a climbing crane can be used from an underground floor, working efficiency improves markedly compared with the past.

In the second invention, in the first invention,
The core base is integrally provided with a plurality of leg mounting portions to which the detachable leg portion can be coupled,
The upper surfaces of the plurality of leg mounting portions are processed as alignment surfaces processed horizontally,
The detachable leg portion is composed of a telescopic leg portion that is connected to the core base so as to be stretchable,
An alignment plate that comes into contact with the alignment surface can be attached to the upper surface of the end of the telescopic leg portion that is coupled to the leg attachment portion.

  According to said structure, since it is a telescopic leg part, when raising a mast, it can be raised to the upper floor | floor with the mast being contracted. In addition, since the telescopic legs need only be extended in accordance with the arrangement of the beams, it is easy to install the beams for fixing the core base. Further, the alignment plate facilitates the alignment of the folding leg.

In the third invention, in the second invention,
When aligning the telescopic leg part temporarily fixed and the leg mounting part during the floor climbing, at least one of all the alignment surfaces is aligned with the telescopic leg part. After that, the remaining alignment surfaces can be aligned.

  That is, the alignment between the core base and the telescopic leg portion is performed when the core base is raised, but it is difficult to align all of the plurality of leg portion attachment portions at once. However, according to the above configuration, it is only necessary to align the alignment surfaces of at least one of the plurality of leg mounting portions and sequentially align the remaining alignment surfaces. It becomes.

In the fourth invention, in the first invention,
The core base is integrally provided with a plurality of leg mounting portions to which the detachable leg portion can be coupled,
The upper surfaces of the plurality of leg mounting portions are processed as alignment surfaces processed horizontally,
The detachable leg part is composed of a foldable leg part foldably connected to the core base,
An alignment plate that comes into contact with the alignment surface can be attached to the upper surface of the end of the foldable leg that is coupled to the leg mounting portion.

  According to said structure, since it is a foldable leg part, when raising a mast, it can be folded and it can be raised to the upper floor with the mast. Further, the positioning of the folding leg portion is facilitated by bringing the positioning surface of the leg mounting portion into contact with the positioning plate.

In the fifth invention, in the fourth invention,
The folding leg is configured to be horizontally swingable by attaching a mounting jig to the flange part of the leg mounting part of the folding leg and inserting the swing pin vertically.
The folded leg portion is configured to be positioned by the positioning plate and the positioning surface when the folding leg portion is swung around the swing pin and connected to the leg mounting portion. .

  According to said structure, when raising a mast, it can fold centering on a rocking | fluctuation pin and can raise it to the upper floor | floor with every mast. When the connection position is set, the folding leg is swung around the rocking pin and positioned on the alignment surface of the leg mounting portion using the alignment plate, so that positioning is easy.

In a sixth invention, in any one of the second to fifth inventions,
An alignment through-hole is formed at a position spaced a predetermined distance from the alignment surface of the leg mounting portion,
A coupling pin that is inserted through the alignment through hole and couples the desorption leg portion to the core base,
A taper pin whose outer diameter narrows toward the tip;
The inner diameter increases toward the tip so as to correspond to the taper surface of the taper pin, and includes an outer cylinder having a continuous slit from the base end toward the tip.
By pushing the taper pin into the through hole of the core base and the alignment through hole corresponding to the through hole, the taper pin is fixed to the through hole while the slit is widened, and the detachable leg portion Is fixed to the core base.

  According to said structure, alignment is performed, as the slit of an outer cylinder spreads, as a taper pin is inserted in the through-hole for alignment. For this reason, the pin insertion operation becomes extremely easy, and after positioning, the coupling pin is firmly fixed to the alignment through hole, and the attachment / detachment leg portion is fixed to the leg attachment portion. .

  As described above, according to the present invention, the first posture for fixing the core base to the pile, and the second posture in which the detachable leg portion is attached to the core base and supported by the floor of the building via the detachable leg portion. The posture can be changed in the middle of floor climbing using the lifting device, so that the construction of the climbing crane is reduced by changing the shape of the core base according to the progress of the construction. In addition, it is possible to reduce restrictions and restrictions on the installation of a climbing crane and save time and effort for planning and construction.

It is a front view showing the whole climbing crane concerning the embodiment of the present invention. It is a bottom view which shows the core base which concerns on embodiment of this invention. It is a front view which shows the state in which the core base was directly sewed on the pile. It is a top view which shows the state which extended the folding type leg part. It is a front view which shows the state which extended the folding type leg part. It is a top view which shows the state folded so that a pair of folding type leg part might face each other. It is a top view which shows the state which folded each folding type leg part. It is the VIII-VIII line expanded sectional view of FIG. The coupling pin is shown, (a) is a sectional view of the state in which the coupling pin is inserted, (b) is a front view of the outer cylinder in the state of insertion of the coupling pin, and (c) is the coupling when not in use It is sectional drawing which shows a pin, (d) is a front view which shows the outer cylinder at the time of non-use. It is a top view which shows a mode that the expansion-contraction type leg part was attached to the core base. It is a front view which shows a mode that the expansion-contraction type leg part was attached to the core base. It is a schematic front view which shows each process of the floor climbing of a climbing crane, (a) shows the state which directly sewed the core base to the pile, (b) climbs down the crane main body to the floor of a building, and is the middle floor Fig. 5 shows a state where the telescopic legs are temporarily fixed, (c) shows a state where the mast is raised and the telescopic legs are attached to the core base, and (d) shows a working posture where the crane is raised to the top of the mast. It is a schematic front view which shows each process of the floor climbing of a climbing crane, (a) shows the state which changed the folding leg part to the core base, (b) raised the mast and made the folding leg part a high-rise floor (C) shows the working posture in which the crane is raised to the top of the mast.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a climbing crane 6 according to an embodiment of the present invention. This climbing crane 6 has a mast 1 on a core base 10 and a crane body 4 is installed on the top. The climbing crane 6 can perform floor climbing and mast climbing. The crane body 4 includes a swivel body 4a that is rotatably supported by a swivel bearing (not shown) provided on the top of the mast 1, a jib 4b that is supported by the swivel body 4a in a undulating manner, and a swivel body 4a. A fixed hoist winch 4c, a hoisting rope 4d wound on the hoisting winch 4c, and a hook 4e attached to the tip of the hoisting rope 4d are provided.

  A core base 10 that can be sewn directly to the pile 50 is fixed to the base end of the mast 1. As shown in FIG. 2, the core base 10 is integrally provided with four leg attachment parts 11 to which a foldable leg part 12 or a telescopic leg part 112 as a detachable leg part can be attached and detached. The upper surfaces of the plurality of leg attachment portions 11 are processed as horizontal alignment surfaces 11a. Although details will be described later, the core base 10 includes a first posture in which the core base 10 shown in FIG. 12A is directly sewn to the pile 50, and a core shown in FIGS. 12D and 13C. Using the lifting / lowering device 5, the foldable leg 12 or the telescopic leg 112 is attached to the base 10 and the second posture supported by the foldable leg 12 or the telescopic leg 112 on the floor of the building is used. It can be changed during the floor climbing.

  First, the telescopic leg 112 will be described. As shown in FIGS. 10 and 11, the telescopic leg 112 has a telescopic rod 112b accommodated in a pair of cylinder housings 112a. For example, the rod 112b is driven by a power such as an electric motor by a ball jack (not shown). It is designed to expand and contract using. The cylinder accommodating portion 112a is connected by a connecting portion 112c, and a flange portion 112d of the connecting portion 112c is connected to the leg portion attaching portion 11. An alignment plate 15 that abuts on the alignment surface 11a can be attached to the upper surface of the flange portion 112d coupled to the leg attachment portion 11 of the connecting portion 112c. When aligning the telescopic leg portion 112 and the leg mounting portion 11 that are temporarily fixed during floor climbing, at least one of all the alignment surfaces 11a is aligned with the alignment plate 15 of the telescopic leg portion 112. After the alignment, the remaining alignment surface 11a can be aligned.

  Next, the folding leg 12 will be described. As shown in FIGS. 4 and 5, a foldable leg portion 12 can be coupled to the four leg mounting portions 11 of the core base 10. The folding leg portion 12 can be swingably mounted by a swing pin 13 with respect to the leg mounting portion 11. Specifically, by attaching the mounting jig 14 to the flange portion of the leg mounting portion 11 and inserting the swing pin 13 in the vertical direction, the folding leg portion 12 can swing horizontally, as shown in FIG. The posture can be changed between the posture extended in an X shape and the folded posture shown in FIGS. 6 and 7. And the alignment board 15 contact | abutted to the alignment surface 11a is attachable to the upper end of the flange part 12a couple | bonded with the leg part attaching part 11 of the folding-type leg part 12 with the volt | bolt 16 grade | etc.,. Each of the four folding legs 12 is aligned and attached using the alignment plate 15.

  As shown in FIG. 8 in an enlarged manner, an alignment through-hole 11b is formed at a position spaced a predetermined distance H from the alignment surface 11a in the flange portion of the leg mounting portion 11, and this alignment through-hole 11b The coupling pin 20 is inserted into a through hole (not shown) of the folding leg 12 to couple the folding leg 12 to the core base 10. Although not shown, the telescopic leg 112 is similarly inserted into the through hole 11b for alignment and the through hole of the telescopic leg 112 to insert the coupling pin 20 into the core base. 10 is connected.

  As shown in FIG. 9, the coupling pin 20 has a tapered pin 21 whose outer diameter becomes narrower toward the distal end, an inner diameter that increases toward the distal end so as to correspond to the tapered surface of the tapered pin 21, and from the proximal end side. And an outer cylinder 22 having a slit 22a continuous toward the distal end side. A screw portion 23 is formed on the tip end side of the taper pin 21, and a hitting portion 24 is formed on the tip end. For example, a flat washer 25, a nut 26, and an idling 27 are fastened to the screw portion 23, and the screw portion 23 is fastened to, for example, a reaction force receiving plate 28 inserted into the bracket 11d on the leg mounting portion 11 side. The reaction force receiving plate 28 is connected to the proximal end side of the taper pin 21 by a fall prevention chain 29.

  Then, by pushing the taper pin 21 into the through hole of the folding leg 12 or the extendable leg 112 and the alignment through hole 11b corresponding to the through hole, the gap of the slit 22a is changed from C0 to C1. The taper pin 21 is fixed to both through holes while spreading, and the foldable leg portion 12 or the extendable leg portion 112 is fixed to the core base 10.

  Next, a floor climbing method of the climbing crane 6 according to the present embodiment will be specifically described with reference to the drawings.

  First, a pile 50 made of steel plate is placed horizontally on a foundation 51 such as concrete on the basement floor and solidified with concrete. The pile 50 may be driven so as to be horizontal.

  Next, the core base 10 is fixed to the pile 50 as shown in FIG. 3 by inserting a bolt (not shown) through the bolt insertion hole 10a of the core base 10 shown in FIG.

  The mast 1 is assembled to the core base 10, and the elevator 5 and the crane body 4 are installed on the mast 1, and then the crane work on the underground floor is performed. At this time, the folding base 12 or the telescopic legs 112 are not connected to the core base 10. For this reason, the climbing crane 6 can be installed even in a narrow area such as an underground floor. Moreover, since the core base 10 is directly sewed on the highly rigid pile 50, the climbing crane 6 can be supported also on the concrete foundation 51 on the basement floor. Thus, since the climbing crane 6 can be used from an underground floor, work efficiency improves markedly compared with the past.

  Then, as shown in FIG. 12 (b), for example, at the stage where a steel frame or the like of the third floor of the building is assembled, the telescopic leg 112 is placed on the beam 52 made of H rope or the like and temporarily fixed.

  Next, the bell receiving beam 55 is temporarily placed on the beam 52 on the upper floor, and the crane body 4 is climbed down.

  Next, the bolts of the core base 10 are removed, and the fixing of the core base 10 and the pile 50 is released.

  Next, the mast 1 is raised together with the core base 10 by the lifting device 5. At this time, since the foldable leg 12 or the telescopic leg 112 is not connected to the leg mounting part 11 of the core base 10, the core base 10 can be easily pulled up even in a narrow area of the basement. .

  Next, as shown in FIG. 12C, when the core base 10 is moved up to the position of the telescopic leg 112 to which the core base 10 is temporarily fixed, the core base 10 and the telescopic leg 112 need to be aligned. . At this time, it is difficult to align all the flange portions of the four leg attachment portions 11 at a time, but in this embodiment, first, at least one position of the four leg attachment portions 11 is positioned. The alignment surface 11a is aligned. Specifically, the alignment plate 15 fastened to the upper surface of the flange portion 112d coupled to the leg portion attachment portion 11 of the four telescopic leg portions 112 is brought into contact with one alignment surface 11a. In this state, the core base 10 is raised little by little so that the remaining alignment surface 11a is brought into contact with the other alignment plate 15. In this way, it is only necessary to first align the at least one alignment surface 11a and sequentially align the remaining alignment surfaces 11a, which facilitates the alignment operation. The pile 50 may be left as it is on the foundation 51 or may be removed. Further, at this stage, the folding leg 12 may be prepared on the beam 52 and the folding leg 12 may be fixed to the core base 10.

  Next, the telescopic leg 112 is coupled to the core base 10 by the coupling pin 20. Even if the through hole on the telescopic leg 112 side and the alignment through hole 11b are not perfectly aligned, the tip of the taper pin 21 is tapered, so that the taper pin 21 becomes the alignment through hole 11b. Positioning is performed while the slit 22a of the outer cylinder 22 expands as it is inserted. In this way, by sequentially inserting all of the four coupling pins 20 into the alignment through hole 11b, alignment of the telescopic leg 112 and the core base 10 is performed. For this reason, the insertion operation of the connecting pin 20 becomes extremely easy, and after positioning, the connecting pin 20 is firmly fixed to the alignment through hole 11b.

  Next, by fastening a bolt (not shown) to a bolt fastening hole 11 c (shown in FIG. 8) of the leg attaching portion 11, the telescopic leg 112 is securely fixed to the core base 10.

  Next, as shown in FIG. 12 (d), the crane body 4 is raised to the top of the mast 1 and fixed, and the crane work up to a predetermined floor is performed.

  Then, floor climbing is repeated using the telescopic legs 112. When the mast 1 is raised, the telescopic leg 112 may be reduced, and the rod 112b of the telescopic leg 112 may be extended and fixed to the beam 52 according to at least the width of the pair of beams 52. The installation work of the beam 52 for fixing the core base 10 is easy.

  After this, floor climbing may be performed using the telescopic leg 112, but the telescopic leg 112 and the folding leg 12 are rearranged in accordance with the span of the beam 52 of the building, for example, on the middle high floor. May be.

  In this case, as shown in FIG. 13A, for example, a raising base 54 is fixed to a beam 53 on a higher floor, and a bell receiving beam 55 is temporarily fixed thereon. Then, the crane body 4 is climbed down and fixed to the bell receiving beam 55.

  Next, when the mast 1 is raised, the telescopic leg 112 is removed from the leg attaching part 11, and the folding leg 12 is fixed to the leg attaching part 11. In this case, after attaching the attachment jig 14 to each mating surface, first, the swing pin 13 is inserted to attach each folding leg 12 to the leg attachment 11. At this time, the folding posture shown in FIG. 6 or 7 is adopted. This posture may be properly used according to the span of the beams 52 and 53 arranged. By raising the mast 1 in the folded state as described above, the core base 10 can be raised together with the folding legs 12 between the beams 52.

  Next, as shown in FIG. 13 (b), the core base 10 is lifted up to the raising base 54 using the lifting device 5, and then each folding leg 12 is swung around the swing pin 13. The folding leg portion 12 is aligned with the leg attachment portion 11. At this time, the alignment plate 15 attached to the base end side of the folding leg 12 is brought into contact with the positioning surface 11a for positioning so that the leg mounting can be ensured even if the folding leg 12 is tilted. Aligned with the part 11.

  Next, the foldable leg portion 12 is securely fixed to the core base 10 by inserting the coupling pin 20 and fastening the bolt in the same manner as the telescopic leg portion 112.

  The foldable legs 12 are fixed to the beam 53 on the higher floor in a state where the four foldable legs 12 are expanded in an X shape. Since the four folding legs 12 are fixed to the respective beams 53, unlike the telescopic legs 112 that need only be fixed to the pair of beams 52, in the case of the folding legs 12, the beams 53 are connected to the wells. Need to be placed in the mold. Thus, in a place where the beam 53 can be arranged in the “well” shape, the folding leg portion 12 having a simple and inexpensive configuration can be used.

  Next, the crane body 4 is lifted up to the top of the mast 1 by the lifting device 5 to obtain the working posture of FIG. Thereby, crane work is performed. Floor climbing may be repeated with the foldable leg 12 fixed.

  As described above, according to the present invention, after the core base 10 in the basement is pulled up and attached to the telescopic leg 112, the construction is performed by the climbing crane 6, and then the core base 10 is detached from the telescopic leg 112. Then, the core base 10 is pulled up and attached to the folding leg 12 or the telescopic leg 112 prepared for the next beam 52.

  Then, the folding leg 12 may pull up the mast 1 with the core base 10 attached (see FIGS. 6 and 7), or once the core base 10 is removed from the folding leg 12 and the next beam In some cases, the foldable leg 12 is prepared in 52 and the core base 10 is pulled up and attached to the foldable leg 12. In that case, the prepared folding leg part 12 does not need to be bent like FIG.6 and FIG.7.

  In addition, the core base 10 is mounted on the folding leg 12 from the telescopic leg 112, mounted on the telescopic leg 112 from the telescopic leg 112, or next on the folding leg 12. The mounting procedure is appropriately changed depending on the construction procedure such as mounting on the telescopic leg 112 or mounting on the folding leg 12 from the folding leg 12 to the next.

  Although not shown, in mast climbing, the core base 10 may be fixed to a pile provided near the building, or may be fixed to the beam using the folding leg 12 or the extendable leg 112. . In mast climbing, it is not necessary to change the posture in the middle of the core base 10.

  Therefore, according to the climbing crane 6 according to the present embodiment, the first posture for fixing the core base 10 to the pile 50 of the foundation 51 and the folding leg portion 12 or the telescopic leg portion 112 are attached to the core base 10. Progress of construction by configuring the second posture supported on the floor of the building via the folding leg 12 or the telescopic leg 112 so that it can be changed during the floor climbing using the lifting device 5 The construction of the core base 10 can be changed to reduce the construction on the building side that accompanies the installation of the climbing crane 6, and the constraints and time required for the installation and installation of the climbing crane 6 can be reduced. Can be saved.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  For example, in the above-described embodiment, the leg attachment portions 11 are provided on the squares of the core base 10 having a rectangular shape in plan view, but the attachment location and the number of the leg attachment portions 11 are not limited thereto.

  Moreover, in the said embodiment, although the alignment board 15 is attached to the telescopic leg part 112 side or the folding-type leg part 12 side, this alignment board 15 is not limited to this, The core base 10 side is provided. It may be provided.

  Moreover, in the said embodiment, although the folding leg part 12 can be bent using the attachment jig | tool 14, when not folding the folding leg part 12, this attachment jig | tool 14 does not need to be attached. . That is, when the mast 1 with the folding legs 12 is pulled up, the space is narrow, so it is necessary to fold and pull it up as shown in FIGS. 6 and 7, but it is necessary to pull up the mast 1 on the top floor or the like. There is no need to bend the foldable leg 12 because it is not. In such a case, it is not necessary to attach the attachment jig 14.

1 mast
4 Crane body
5 Lifting device
6 Climbing crane
10 Core base
10a Bolt insertion hole
11 Leg mounting part
11a Alignment surface
11b Through hole for alignment
12 Folding legs (removable legs)
12a Flange
13 Swing pin
14 Mounting jig
15 Alignment plate
20 Connecting pin
21 Tapered pin
22 outer cylinder
22a Slit 112 Telescopic leg (detachable leg)

Claims (6)

In a climbing crane having a lifting and lowering device that lifts and lowers the crane body along the mast, the crane body is installed at the top of the mast stacked up and down,
A core base that is provided at the base end of the mast and can be sewn directly to a pile;
A detachable leg portion detachably provided on the core base,
A first posture in which the core base is directly sewn to the pile, and a second posture in which the demountable leg is attached to the core base and supported on the floor of the building via the demountable leg. A climbing crane characterized in that it can be changed in the middle of floor climbing. The climbing crane according to claim 1,
The core base is integrally provided with a plurality of leg mounting portions to which the detachable leg portion can be coupled,
The top surfaces of the plurality of leg mounting portions are processed as horizontal alignment surfaces, and the detachable leg portion is composed of a telescopic leg portion that is extendably connected to the core base,
The climbing crane according to claim 1, wherein an alignment plate abutting on the alignment surface is attachable to an upper surface of an end portion of the telescopic leg portion that is coupled to the leg attachment portion. The climbing crane according to claim 2,
When aligning the telescopic legs and the leg mountings during floor climbing, after aligning at least one of all alignment surfaces with the telescopic legs, the remaining A climbing crane characterized in that the alignment surface can be aligned. The climbing crane according to claim 1,
The core base is integrally provided with a plurality of leg mounting portions to which the detachable leg portion can be coupled,
The upper surfaces of the plurality of leg mounting portions are processed as alignment surfaces processed horizontally,
The detachable leg part is composed of a foldable leg part foldably connected to the core base,
A climbing crane characterized in that an alignment plate abutting on the alignment surface can be attached to an upper surface of an end portion of the foldable leg portion that is coupled to the leg attachment portion. The climbing crane according to claim 4,
The folding leg is configured to be horizontally swingable by attaching a mounting jig to the flange part of the leg mounting part of the folding leg and inserting the swing pin vertically.
The folded leg portion is configured to be positioned by the positioning plate and the positioning surface when the folding leg portion is swung around the swing pin and connected to the leg mounting portion. Climbing crane characterized by that. In the climbing crane as described in any one of Claim 2 to 5,
An alignment through-hole is formed at a position spaced a predetermined distance from the alignment surface of the leg mounting portion,
A coupling pin that is inserted through the alignment through hole and couples the desorption leg portion to the core base,
A taper pin whose outer diameter narrows toward the tip;
The inner diameter increases toward the tip so as to correspond to the taper surface of the taper pin, and includes an outer cylinder having a continuous slit from the base end toward the tip.
By pushing the taper pin into the through hole of the core base and the alignment through hole corresponding to the through hole, the taper pin is fixed to the through hole while the slit is widened, and the detachable leg portion The climbing crane is configured to be fixed to the core base.

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