JP2643663B2 - Tower crane and climbing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tower crane used for constructing a building having a steel column and a climbing method thereof.

[0002]

2. Description of the Related Art Generally, a tower-type crane called a tower crane is used when building a building such as a high-rise building having an RC structure. This tower crane includes a pedestal installed on the ground, a mast erected from the pedestal, a crane body installed on the top of the mast, a climbing device that moves the crane body up and down along the mast, and the like. It is configured.

[0003] The climbing device is, for example,
A pair of upper and lower elevating frames removably attached to the mast, and telescopic driving means such as a hydraulic cylinder mounted between the pair of elevating frames. By alternately locking and releasing the lifting frame of the mast from the mast,
The crane body is climbed (elevated) as appropriate as the building construction progresses.

[0004] Generally, the tower crane is erected outside a high-rise building on which the mast is to be constructed, and is installed on the side of the tower, so that the effective working range of the tower crane itself is fully utilized. And the actual scope of work was narrowed significantly. In recent years, Japanese Patent Laid-Open No. 64-29
As disclosed in Japanese Patent Publication No. 94 (Int. Cl. B66C 23/32) and the like, by installing the mast inside the framework of a high-rise building, the effective working range of the tower crane can be widely utilized. On the other hand, the mast is supported on the lower floor after the curing is completed, and the support rigidity is increased.

[0005]

However, in such a conventional tower crane, a pedestal is provided on the ground regardless of which type is installed outside or inside a high-rise building on which a mast is to be constructed. Since the mast is erected on this mast, the mast becomes extremely long. Therefore, if the mast is given sufficient rigidity, the mast inevitably becomes extremely large, which not only necessitates a great increase in cost, but also requires a long time for its installation and a long construction period. There were various issues.

The present invention has been made in view of such a conventional problem, and an object of the present invention is to use a part of a steel frame of a building frame as a mast to secure a sufficient rigidity while securing sufficient rigidity. It is an object of the present invention to provide a tower crane and a climbing method thereof that can be simplified and can achieve a reduction in cost and a shortened construction period.

[0007]

In order to achieve the above object, a tower crane according to the present invention has a structure in which a part of a steel column of a building frame is constructed before another steel column, and the steel column of the preceding steel column is constructed. A guide frame is detachably mounted around the outside, and the steel column to which the guide frame is attached is used as a mast of the tower crane.The crane body is installed on the top of the mast, and the crane body and the guide frame are located between the mast and the guide frame. It is configured by providing a climbing device.

The climbing device is attached to the lower side of the crane main body and is vertically movable with respect to the guide frame. The climbing device is disposed at an appropriate distance below the upper and lower frame to move vertically with respect to the guide frame. A possible lower elevating frame, disengaging means for engaging and disengaging the upper elevating frame and the lower elevating frame with the guide frame, and telescopic driving means provided between the upper elevating frame and the lower elevating frame. It is desirable to configure it.

Further, in the climbing method for a tower crane according to the present invention, after the lower elevating frame is locked to the guide frame, the upper elevating frame is detached from the guide frame. Extend and raise the upper lifting frame, then lock the upper lifting frame to the guide frame, then detach the lower lifting frame from the guide frame, and in this state shorten the telescopic drive means to raise the lower lifting frame Let it.

[0010]

According to the tower crane of the present invention having the above-described structure, the steel column is used as a mast by attaching a guide frame to the outside of a part of the steel frame of the building frame. It is not necessary to install the components, so that the configuration can be greatly simplified and the number of parts can be reduced. By installing the crane main body on the top of the mast, which is a steel column, the effective working range of the crane main body can be utilized sufficiently effectively. The climbing of the crane body can be performed by a climbing device provided between the crane body and the guide frame.

The climbing device is mounted on the lower side of the crane main body, and is vertically movable with respect to the guide frame. The climbing device is disposed below the upper vertical frame with an appropriate space therebetween. A movable lower elevating frame, engaging and disengaging means for detachably attaching the upper elevating frame and the lower elevating frame to the guide frame, and telescopic driving means provided between the upper elevating frame and the lower elevating frame. With this configuration, climbing can be easily performed.

Further, in the method of climbing a crane body using the climbing device having the above-described structure, the lower elevating frame is locked to the guide frame, and then the upper elevating frame is detached from the guide frame. Extend the drive means to raise the upper lifting frame, and then, after locking the upper lifting frame to the guide frame, detach the lower lifting frame from the guide frame,
In this state, the crane body can be efficiently and quickly raised by shortening the telescopic drive means and raising the lower lifting frame.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 8 show an embodiment of a tower crane according to the present invention, FIG. 1 is an overall configuration diagram, FIG. 2 is an enlarged view of a main part, FIG. 3 is a main part configuration diagram of a steel column, and FIG. 2 is a sectional view taken along line AA, FIG. 5 is a sectional view taken along line BB in FIG. 2, and FIG.
7 is a sectional view taken along line DD in FIG. 2.
As shown in FIGS. 1 and 2, the tower crane 10 of the present embodiment is a building 1 as a building body under construction.
A part of the steel column 14 was constructed before the other steel column 14a, and a guide frame 16 was removably attached around the outside of the preceding steel column 14 and the guide frame 16 was attached. The steel column 14 is connected to the tower crane 10
Mast 18. Then, a crane body 20 is installed on the top of the mast 18, and a climbing device 22 is provided between the crane body 20 and the mast 18.

The steel column 14 is formed as a cylindrical body having a circular cross section as shown in FIGS. 3 and 4, and the guide frame 16 is surrounded by a square outside the steel column 14. . On the outside of the steel column 14, a plurality of four brackets 24 integrally projecting at right angles in the circumferential direction are provided at regular intervals in the vertical direction. On the other hand, the guide frame 16 is provided with a large number of rectangular frame units 16a formed to have a fixed length (for example, a length equal to the height of one floor). It is detachably attached to 24 via a pin 26.

The crane body 20 includes a crane body 2
0, a swing ring 30 that rotatably supports the crane body 20, and a crane boom 3.
2 and a hoisting mechanism 36 and the like. As shown in FIG. 5, the swing receiving frame 28 is formed in a girder shape along the outside of the guide frame 16, and four guide masts 38 are integrally suspended below the swing receiving frame 28. And this guide mast 3
The climbing device 22 is attached to the lower end of the climbing device 8.

The climbing device 22 is mounted on the guide mast 38 and is vertically movable with respect to the guide frame 16. The upper climbing frame 40 is disposed below the upper lifting frame 40 at appropriate intervals. And a lower elevating frame 42 that can move up and down. The upper lifting frame 40 and the lower lifting frame 42 are connected to the guide frame 16 so as to be removably attached to the upper latch 4 as an engaging / disengaging means.
4 and a lower latch 46 are provided. A hydraulic cylinder 48 is provided between the upper lifting frame 40 and the lower lifting frame 42 as a telescopic drive unit.

As shown in FIG. 6, the upper lifting frame 40 has an upper frame main body 50 formed in a cross-girder shape along the outside of the guide frame 16, and guides through the upper girder upper frame main body 50. The frame 16 is vertically movably fitted. 7, the lower lifting frame 42 includes a cross-shaped lower frame body 52 along the outside of the guide frame 16 as shown in FIG. Are fitted to the guide frame 16 so as to be vertically movable.

The upper latch 44 and the lower latch 46 are each configured as a hydraulic cylinder in this embodiment, and are provided to face the upper frame main body 50 and the lower frame main body 52. The operating stroke of the hydraulic cylinder 48 as the telescopic drive means is set to be substantially equal to the floor height of one floor. The upper and lower latches 44 and 46 and the hydraulic cylinder 48 include:
Control hydraulic pressure is supplied from a hydraulic control device 54 provided in the upper lifting frame 40. The guide frame 16 has the upper and lower latches 44 and 4 attached thereto.
6 engaging portions are provided.

In the tower crane 10 having the above configuration, first, a specific steel column 1 is preceded by another steel column 14a.
4 is constructed high, and a guide frame 16 is attached to the upper end of the steel column 14 over an appropriate length.
8 is assumed. Then, the crane main body 20 is installed on the top of the mast 18, and a climbing device 22 is attached below the crane main body 20. In this state, the crane body 20 is ready for work, and various materials are lifted from the ground to sequentially stack the building frames.
At this time, since the steel column 14 used for the mast 18 is located inside the building to be constructed, the crane body 20 can be fully utilized over the entire effective working range along the circumferential direction. It is possible to achieve a remarkable improvement in work efficiency such as lifting of materials.

When the crane body 20 needs to be lifted with the progress of the work, first, the steel column 12 is joined to the upper end of the mast 18 in a state where the crane body 20 is attached. The guide frame 16 is attached to the outside of the column 12. The guide frame 16 attached to the added steel column 12 can be used by removing the unnecessary guide frame 16 attached to the lower end of the steel column 12. Then, by operating the climbing device 22,
The climbing of the crane body 20 is performed.

The operation of the climbing device 22 is as follows. First, the lower latch 46 is engaged with the guide frame 16 to lock the lower lifting frame 42 to the guide frame 16, and then the upper latch 44 is detached from the guide frame 16. The upper lifting frame 40 is relatively movable with respect to the guide frame 16. In this state, the hydraulic cylinder 48 is extended to raise the crane body 20 together with the upper lifting frame 40. Next, after the upper lifting frame 40 is locked to the guide frame 16 via the upper latch 44, the lower latch 46 is detached so that the lower lifting frame 42 can be moved to the guide frame 16. In this state, the hydraulic cylinder 48 is shortened and the lower lifting frame 42 is raised. Thereafter, the lower lifting frame 42 is locked to the guide frame 16 via the lower latch 46. By repeating this climbing method, the crane body 20 can be raised each time.

As described above, the tower crane 1 of the present embodiment
In the case of No. 0, since the steel frame 14 is used as the mast 18 by attaching the guide frame 16 to the outside of a part of the steel frame 14 of the building 12, the original structure of the tower crane 10 itself is significantly reduced. By simplification, a significant reduction in the number of parts can be achieved. Since a part of the steel column 14 of the building 12 was used as the mast 18 in this way,
Crane body 20 installed on the top of the building 12
Can be efficiently used over the entire effective working range of the tower crane 10 to efficiently lift materials and the like. Furthermore, by simplifying the configuration of the tower crane 10, the installation of the tower crane 10 can be performed easily, and the construction period can be shortened.

The climbing of the crane body 20 is performed by a climbing device 22 provided between the crane body 20 and the mast 18. The climbing by the climbing device 22 is performed by the upper lifting frame 4
0 and the lower lifting frame 42 are alternately engaged with and disengaged from the guide frame 16 and the hydraulic cylinder 48 provided between the lifting frames 40 and 42 is expanded and contracted. Can be done well and quickly.

[0024]

As described above, the tower crane of the present invention utilizes the steel column as a mast by attaching a guide frame to the outside of a steel column of a part of the building frame, and uses the crane on the top of the mast. Since the main body is installed, the configuration as a tower crane is significantly simplified, and the number of parts can be significantly reduced. This also simplifies installation of the tower crane and shortens the construction period. Furthermore, by installing the crane main body on the top of the mast made of the steel column, the crane main body can be fully utilized over the entire effective working range of the crane body to efficiently lift materials and the like. it can.

The climbing device of the crane main body is attached to the lower side of the crane main body, and an upper elevating frame that can move up and down with respect to the guide frame, and is disposed below the upper elevating frame at appropriate intervals. Lower frame that can be moved up and down with respect to the upper and lower frames, engaging and disengaging means for attaching and detaching the upper and lower frames to and from the guide frame, and telescopic drive means provided between the upper and lower frames and the lower frame. The upper and lower lifting frames and the lower lifting and lowering frame are alternately engaged and disengaged from the guide frame, and the crane body can be climbed by a simple method of expanding and contracting the expansion and contraction drive means. Various advantages of easy and quick climbing It was an effect.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing one embodiment of a tower crane according to the present invention.

FIG. 2 is an enlarged view of a main part of one embodiment of the tower crane according to the present invention.

FIG. 3 is a main part configuration diagram of a steel column used in one embodiment of the tower crane according to the present invention.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 2;

FIG. 6 is a sectional view taken along line CC in FIG. 2;

FIG. 7 is a sectional view taken along line DD in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Tower crane 12 Building (building structure) 14 Steel column 14a Steel column 16 Guide frame 18 Mast 20 Crane main body 22 Climbing device 40 Upper lifting frame 42 Lower lifting frame 44 Upper latch (disengaging means) 46 Lower latch (disengaging means) ) 48 Hydraulic cylinder (telescopic drive means)

Continuation of front page (56) References JP-A-64-2994 (JP, A) JP-A-48-65644 (JP, A) JP-A-49-77343 (JP, A) JP-A-62-240297 (JP) , A) Japanese Utility Model Showa 55-113386 (JP, U) Japanese Patent Publication No. 50-18701 (JP, B1)

Claims (3)

(57) [Claims] 1. A tower crane for use in constructing a building frame having a steel column, wherein a part of the column of the building frame is constructed prior to another steel column, and A guide frame is removably attached around the outside, and the steel column to which the guide frame is attached is used as a mast of a tower crane. A crane body is installed on the top of the mast, and a crane body and the guide frame A tower crane comprising a climbing device. 2. The climbing device according to claim 1, wherein the climbing device is attached to a lower side of the crane main body, and is vertically movable with respect to the guide frame. A lower lifting frame that can be moved up and down with respect to the upper and lower lifting frames, and an engaging and disengaging means for engaging and disengaging the upper and lower lifting frames with the guide frame, respectively, between the upper lifting frame and the lower lifting frame. The tower crane according to claim 1, further comprising: a telescopic drive unit provided. 3. A tower crane for use in constructing a building frame having a steel column, wherein a part of the column of the building frame is constructed prior to another steel column, and A guide frame is removably attached around the outside, and the steel column to which the guide frame is attached is used as a mast of a tower crane. A crane body is installed on the top of the mast, and the guide frame is provided below the crane body. A vertically movable upper elevating frame is attached to the guide frame, and a lower elevating frame that is vertically movable with respect to the guide frame is provided below the upper elevating frame at appropriate intervals. An engaging and disengaging means is provided between the guide frame and the upper and lower elevating frames, and a telescopic driving means is provided between the upper and lower elevating frames. After the frame is locked to the guide frame, the upper elevating frame is detached from the guide frame, and in this state, the telescopic driving means is extended to raise the upper elevating frame. A climbing method for a tower crane, wherein the lower elevating frame is detached from the guide frame after being locked to the guide frame, and in this state, the telescopic driving means is shortened to raise the lower elevating frame.