JP2529067B2 - Crane flexible climbing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible climbing method for a crane, which is suitable for construction work of structures such as steel frame, steel frame reinforced concrete and reinforced concrete.

[0002]

2. Description of the Related Art In the conventional construction method, as shown in FIG. 12, for example, an extendable crane support beam B is supported on the first floor 1F, and a crane mast M of a crane C is mounted on a crane mast M standing on the support beam B. Support C1 and perform construction.

Next, when the strength development of the 6th floor 6F is confirmed, as shown in FIG. 13, the crane main body frame receiving temporary beam B1 is installed on the 6th floor 6F, and the crane main body frame C1 is lowered by the climbing device D attached to the main body. It is fixed to the temporary beam B1.

Then, as shown in FIG. 14, a reaction force is applied to the temporary beam B1 and the crane mast M and the crane receiving beam B are pulled up by the climbing device D attached to the main body.

Next, as shown in FIG. 15, a crane receiving beam B
Is fixed to a predetermined floor (3rd floor 3F in the example shown) and the temporary beam B
After removing 1 and raising the crane body frame C1 with the climbing device D attached to the body, 7th floor 7F, 8th floor 8F
I am trying to do the construction.

[0006]

In the conventional construction method, when the strength of the building on the uppermost floor (6F, 6F in FIG. 12) is not expressed, it is necessary to wait until the strength is expressed before climbing.

Therefore, the preceding work in the shaded area E in FIG. 13 is impossible, which causes a problem that the construction period is extended.

It is an object of the present invention to provide a flexible climbing construction method for a crane which enables a preceding construction and shortens the construction period.

[0009]

According to the present invention, when climbing a crane in which a crane mast and a crane body frame which are erected on a crane receiving beam are relatively moved up and down by a chlaming device, the structural concrete on the top floor is used. When climbing is required after placing, and when the strength of the uppermost floor or the lower floor is insufficient, the bottom of the temporary unit cradle is selectively supported on the lower floor where the strength is developed and the crane is mounted on the top. After connecting the main frame and pulling up the crane mast and crane receiving beam by applying a reaction force to the temporary unit receiving frame and supporting the crane receiving beam on a predetermined floor, connecting the top of the temporary unit receiving frame and the crane main frame Is solved to raise the crane main body frame.

[0010]

According to the present invention, even if there is an insufficient strength portion of the skeleton, the climbing work can be performed by avoiding this portion and always fixing the crane body frame to a fixed place.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a crane embodying the present invention.

In FIG. 1, a crane mast 3 is erected on a top of a self-expanding type crane receiving beam 1 via a plane mount 2. The crane mast 3 is attached to the crane 4 through a climbing device attached to the main body, which is indicated by reference numeral 5.
The crane body frame 4a is provided so as to be able to move up and down relatively.

The climbing device 5 attached to the main body comprises an upper frame 6 fixed to the main body frame 4a, a lower frame 7, and a plurality of jacks 8 interposed between the frames 6 and 7. When pulling up the mast 3 and the crane receiving beam 1, the bell beam 9 of the upper frame 6 is fixed to the bell beam 19, the jack 8 is extended to fix the lower frame 7 to the mast 3, and then the jack 8 is removed. It contracts and pulls up the mast 3 and the crane support beam 1 to fix the crane support beam 1 to the upper floor. Then, the lower frame 7
1 is released, the jack 8 is extended and fixed to the mast 3, and the mast 3 and the crane receiving beam 1 are pulled up in a so-called scale insect type in the same manner as described above. When raising the main body frame 4a, the lower frame 7 is fixed to the mast 3 and the jack 8 is expanded and contracted.

On the other hand, a temporary unit cradle generally designated 10 surrounding the mast 3 is selectively provided, and the bell beam 9 of the upper frame 6 when descending is selectively the top of the temporary unit cradle 10. The bell beam 19 is selectively bolted.

In FIG. 2 and FIG. 3, the temporary unit receiving stand 10 includes a pair of automatically expanding / contracting temporary receiving beams 11 supported by a pair of expanding / contracting portions 12 on a pair of main structure A, and the temporary receiving beams. A pair of unit frames 16 erected on both sides of the upper surfaces of 11, 11; a joint beam 17 connecting the unit frames 16 and 16; and a pair of connecting beams 18 connecting the upper sides of the unit frames 16, 16. The connecting beams 18 and 18 are formed by bell large beams 19 connecting both upper surfaces of the connecting beams. In the figure, reference numeral 13 is a hairpin, 14 is a hairpin bolt, and 19a is a bolt hole for mounting a bell beam.

Next, the mode of construction will be described.

In FIG. 4, the crane beam 1 is shown on the first floor 1F.
Installed on the 6th floor 6th floor with crane 4, and now 7
During the preceding construction of the 7th floor, the building strength of the 6th floor 6F is not manifested. Therefore, the temporary unit receiving stand 10 is installed on the 5th floor 5F where the strength is exhibited.

The temporary unit receiving stand 10 is installed in the following procedure. That is, the main body structures A, A on the fifth floor 5F
Temporary receiving beams 11 and 11 in which the stretchable portions 12 and 12 are extended
(Fig. 7). Next, the unit frames 16 and 16 are erected and connected by the connecting beams 17 and 17 (FIGS. 8 and 9). Next, the tops of the unit frames 16 and 16 are connected to the connecting beam 1
8 and 18, and the tops of the connecting beams 18 and 18 are connected by bell girders 19 and 19 (FIGS. 10 and 11). The crane 4 itself is used for this work, and other cranes are unnecessary. Further, since the members 11 and 16 to 19 are unitized, they can be easily assembled in a short time.
Can be removed and converted.

Next, as shown in FIG. 5, the upper frame 6 is lowered by the climbing device 5 attached to the main body, and the bell beams 9 and 9 are bolted to the bell beam 19 of the temporary unit receiving stand 10. Therefore, a reaction force is applied to the main body structures A, A on the 5th floor 5F through the temporary unit receiving stand 10 by the main body climbing device 5, the crane mast 3 and the crane receiving stand 1 are pulled up, and the crane receiving stand 1 is placed on the 3rd floor. It is supported by the main body structures A, A of 3F.

Finally, as shown in FIG. 6, the bolt connection between the bell beam 9 and the bell beam 19 is released, and the crane body frame 4a is lifted by the climbing device 5 attached to the body.
Perform preparatory work on the 7th and 8th floors.

[0022]

As described above, according to the present invention, a temporary unit receiving frame is arranged on the concrete strength manifesting floor of the lower floor, and the crane main frame is fixed to this frame, so that it is carried out immediately after placing concrete. Crane climbing work can be performed without hindrance to the preceding work. As a result, productivity can be improved and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a side view showing a crane for carrying out the present invention.

FIG. 2 is a perspective view showing the temporary unit receiving stand of FIG.

FIG. 3 is a plan view of the bottom of FIG.

FIG. 4 is a side view showing the installation state of the temporary unit cradle according to the embodiment of the present invention.

FIG. 5 is a side view showing a lifted state of the mast and the crane support beam.

FIG. 6 is a side view showing a lifted state of the crane body frame.

FIG. 7 is a perspective view showing a temporary receiving beam installed state in an assembly mode of a temporary unit receiving stand.

FIG. 8 is a perspective view showing a standing state of one unit frame.

FIG. 9 is a perspective view showing a connected state of both unit frames.

FIG. 10 is a perspective view showing an assembled state of connecting beams.

FIG. 11 is a perspective view showing a completed installation state.

FIG. 12 is a side view showing an initial state showing a conventional aspect.

FIG. 13 is a side view showing a temporary receiving beam installed state.

FIG. 14 is a side view showing a lifted state of the mast and the crane support beam.

FIG. 15 is a side view showing a lifted state of the crane body frame.

[Explanation of symbols]

 A ... Main body structure B ... Crane receiving beam B1 ... Crane main frame receiving temporary beam C ... Crane C1 ... Crane main frame D ... Climbing device attached to main body 1 ... Crane receiving Beam 2 ... Plane mount 3 ... Crane mast 4 ... Crane 4a ... Crane main body frame 5 ... Main body attached chlaming device 6 ... Upper frame 7 ... Lower frame 8 ... Jack 9 ... Bell beam 10 ... Temporary unit receiving stand 11 ... Temporary receiving beam 12 ... Expansion / contraction part 13 ... Hairpin 14 ... Hairpin bolt 15 ... Assembly unit scaffolding 16 ...・ Unit frame 17 ・ ・ ・ Joint beam 18 ・ ・ ・ Connecting beam 19 ・ ・ ・ Bell large beam 19a ・ ・ ・ Bolt hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-141962 (JP, A) JP-A-62-240297 (JP, A) JP-A-64-2994 (JP, A)

Claims (1)

(57) [Claims] 1. When climbing a crane in which a crane mast standing on a crane beam and a crane body frame are relatively moved up and down by a chlaming device when climbing is required after placing concrete on the top floor structure, When the strength of the lower floor of the uppermost floor is insufficient, the bottom of the temporary unit receiving frame is selectively supported on the lower floor where the strength is manifested and the crane main frame is connected to the top to connect the temporary unit receiving frame. After the reaction force is applied to the gantry and the crane mast and the crane receiving beam are pulled up to support the crane receiving beam on a predetermined lower floor of the temporary unit receiving frame, the connection between the temporary unit receiving frame and the crane main frame is released, A flexible climbing method for a crane, characterized in that the crane body frame is raised.