JP4374129B2 - crane - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crane installed at a construction site such as a building.
[0002]
[Prior art]
Conventionally, when building a building, a crane equipped with a post and a lifting mechanism is installed on the site to transport various materials and equipment to the upper floor. This crane has a structure in which the post is extended upward while adding the normal shape as the construction of the building extends upward.
[0003]
In addition, a working scaffold is provided on the side of the building under construction. At this time, if there is room in the work yard, a crane may be installed at the building construction position or in an open space nearby. However, in urban areas, from the viewpoint of effective use of land, there are many cases where a building having a cross-sectional area almost equal to the site area is built in a narrow place where existing buildings are adjacent to each other. It is very difficult to secure.
[0004]
[Problems to be solved by the invention]
However, if the building is a relatively high-rise building with many floors, it is possible to install a crane post there using the elevator shaft space provided in the building. Becomes complicated.
[0005]
In the case of a low-rise building, such a space may not be available. For this reason, installing the post of a crane using the space where the scaffold is installed is performed. However, since the post has a cylindrical shape, there is a problem that an operator's passage in the scaffold is hindered at the post position, and the workability of building construction is deteriorated.
[0006]
The present invention was developed in view of the above points, and each floor provided along a structure in a construction site of a structure such as a building subjected to restrictions such as a narrow place adjacent to a building. It is an object of the present invention to provide a crane that can be installed using the space of the scaffolding and does not obstruct the passage of workers.
[0007]
[Means for Solving the Problems]
In order to effectively achieve the above object, the present invention has the following configuration. That is, the crane of the present invention is disposed adjacent to the scaffold in the middle of a plurality of scaffolds having a fixed height and a floorboard provided along the side of the structure, and each time the scaffold is added upward. A post composed of a plurality of rectangular frames stacked upward in stages, with a work floor arranged at the same height as the scaffolding floor plate in each rectangular frame, and arranged on the top of the post It is the structure characterized by comprising the lifting mechanism provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is an explanatory view of a crane of the present invention provided at a construction site of a construction part, FIG. 2 is an explanatory view of the crane viewed from the side, and FIG. 3 is a partially enlarged view of the crane. 4 is a perspective view of an example of a rectangular frame body, FIG. 5 is a perspective view showing a connecting portion between a pillar member and a stopper member of the rectangular frame body, and FIG. 6 is a scaffold provided along a structure. FIG. 7 is an explanatory view in plan view of a pair of arranged rectangular frames, FIG. 7 is an explanatory view showing the connecting positions of column members of the rectangular frame arranged vertically, and FIG. 8 is a rectangular frame on the structure. It is explanatory drawing of the planar view which shows the state which supported the body.
[0009]
As shown in FIGS. 1 to 3, reference numeral 1 denotes a crane according to the present invention, which is arranged on two posts 3 formed by laminating a plurality of rectangular frame bodies 2 and an upper portion 4 of both posts 3. And a lifting mechanism 5 provided.
[0010]
First, the rectangular frame 2 (see FIG. 4) will be described. The rectangular frame 2 in the illustrated example has a rectangular parallelepiped shape as a whole, and column members 6a and 6b are arranged at four corners, and a wide column member 6a between the column members and The column member 6b is provided with beam members 7 at the upper, lower and intermediate portions thereof, and reinforcing members 8 are provided between the beam members 7 in a truss shape. Further, beam members 9a and 9b are provided at the upper and lower portions between the narrow column members 6a and 6a between the column members and between the column members 6b and 6b. A work floor 10 having hooks 11 that can be locked to the beam members 9b is suspended between the lower beam members 9b.
[0011]
Further, a stopper member 12 is provided in the vicinity of the beam members 9a and 9b between the column members 6a and 6a and between the column members 6b and 6b. The stopper member 12 (see FIGS. 4 and 5) is made of C-shaped steel, and is provided with a contact plate 14 provided with bolt insertion holes 13. On the other hand, a support plate 16 provided with a bolt insertion hole 15 is fixed to each column member 6a, 6b at a position where it can come into contact with the contact plate 14 of the stopper member 12. Each stopper member 12 can be detachably attached to each support plate 16 by bolts and nuts 17.
[0012]
Moreover, as shown in FIG. 7 (and FIG. 4), on the outer surface near the upper end and the lower end of each column member 6a, 6b, so that the rectangular frames 2 stacked on top can be connected and fixed, A gutter plate 19 provided with three through holes 18 for bolts is provided on the inward side of the rectangular frame 2.
[0013]
The rectangular frame 2 described above is stacked on the upper side, and the vertical plate 19 facing each column member 6a, 6b of the rectangular frame 2 positioned above and below is secured by a bolt 20 (see FIG. 7) and a nut (not shown). By connecting, the post 3 is constructed at the construction site of the structure A (see FIG. 1).
[0014]
Further, the lifting mechanism 5 (see FIGS. 1 to 3) disposed on the upper part 4 of the pair of posts 3 constructed with a predetermined interval is capable of moving up and down via the transfer member 21. A lifting / lowering device 26 attached to and detached from the crane 3, a crane support 23 standing at the center of the transfer member 21, and a crane portion provided on the top of the crane support 23 so as to be turned by a rotary drive mechanism (not shown). 24, and a lifting support frame 25 that can be attached to and detached from each post 3, and a lifting device 26 that lifts and lowers the support frame 22, the crane support 23, and the crane portion 24 at the same time. The elevating device 26 is provided on the support frame 22 and the hanging member 21 of each post 3. In addition, the lifting mechanism 5 is assembled on the upper portion 4 of the post 3 by lifting each member by another crane (not shown) at the time of the initial assembly (assembly on a lower floor).
[0015]
The lifting device 26 includes a hydraulic cylinder 26 a and the like. The rear portion 27 of the hydraulic cylinder 26 a is fixed to the transfer member 21, and the tip end of the cylinder rod 28 is connected to the lifting assist frame 25. When the lifting mechanism 5 is raised, the support frame 22 is not fixed to each post 3 and can be freely raised and lowered, and each lifting auxiliary frame 25 is fixed to the stopper member 12 of the rectangular frame 2. The lifting mechanism 5 can be moved upward by extending each cylinder rod 28 simultaneously. Thereafter, each support frame 22 is fixed to the post 3 at that position, and each lift assisting frame 25 is released from the post 3 so that it can freely move up and down, and each cylinder rod 28 is contracted and each lift assist is supported. The frame body 25 is moved to a position above the post 3, each lifting auxiliary frame body 25 is fixed to the post 3 again, and the support frame body 22 fixed to each post 3 is unfixed to freely move up and down. Put it in a state. In this way, each cylinder rod 28 is extended again and the lifting mechanism 5 is moved upward. The above operation is repeated as the rectangular frame 2 is constructed upward, the lifting mechanism 5 is moved upward, and the crane 24 lifts the construction material and the like at a desired height.
[0016]
The crane 1 described above is provided at a location of a scaffold B provided along the side surface of the structure A along with the construction of the structure A at the construction site. And lifting mechanism 5 is moved upward as described above.
[0017]
When the rectangular frames 2 are stacked upward, the rectangular frame 2 is a multi-stage scaffold B having a constant height and a floor plate 29 (see FIGS. 6 and 8) provided along the side surface of the structure A. Is provided adjacent to the scaffold B in the middle. Further, in order to stably fix each rectangular frame 2 constituting the post 3, a locking fitting 32 is provided on the side wall 30 of the structure A via an anchor bolt 31, and the locking fitting 32 and the rectangular frame are provided. The two column members 6a and 6b on the side wall 30 side are connected and supported by a connecting tool 33 whose length can be adjusted. This support can be performed for each rectangular frame 2 or for each stacked rectangular frame 2 at predetermined intervals.
[0018]
If the height of the rectangular frame 2 is the same as the height of one layer of the scaffold B, the height of the work floor 10 is fixed in a state where the work floor 10 is fixedly attached to the lower end or the upper end of the rectangular frame 2. And the height of the floor plate 29 of the scaffold B can be matched, and the post can be suitably arranged.
[0019]
【The invention's effect】
Thus, in the crane of the present invention, it can be installed using the space of the scaffolding of each floor provided along the structure, such as a low-rise building or a high-rise building subject to restrictions such as a narrow place where the building is adjacent. Useful in construction sites of structures. In addition, in a post constructed by stacking rectangular frames upward, the rectangular frames provided on each scaffold do not hinder the passage of workers and do not hinder the progress of construction work. Moreover, when removing from a completed structure, it can be performed in parallel with the removal of the scaffold, and the removal work can be performed more easily than in the past.
[0020]
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a crane according to the present invention provided at a construction site of a construction part.
FIG. 2 is an explanatory diagram of a crane as viewed from the side.
FIG. 3 is a partially enlarged view of the crane.
FIG. 4 is a perspective view of an example of a rectangular frame.
FIG. 5 is a perspective view showing a connection portion between a column member of a rectangular frame and a stopper member.
FIG. 6 is an explanatory diagram viewed from above a pair of rectangular frames disposed on a scaffold provided along a structure.
FIG. 7 is an explanatory view showing a connecting portion of pillar members of a rectangular frame body arranged vertically.
FIG. 8 is an explanatory diagram in plan view showing a state in which a rectangular frame is supported on the structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crane 2 Square frame 3 Post 4 Upper part 5 Lifting mechanism 10 Work floor 29 Floor board A Structure B Scaffold

Claims (1)

Located in the middle of a multi-stage scaffolding having a fixed height and a floorboard provided along the side of the structure, it is disposed adjacent to this scaffold, and is layered upward in stages for each additional extension of the scaffold. A post composed of a plurality of rectangular frames and having a working floor disposed at the same height as the floor plate of the scaffold in each rectangular frame, and a lifting mechanism disposed on the top of the post A crane
Each of the rectangular frames is configured to have a height equal to the height of one layer of the scaffold, and a work floor is fixedly attached to the lower end or the upper end of the rectangular frame. Crane to do.

Images