JPH0322514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for erecting the top of a chimney.

In conventional tower-type chimneys, which are configured so that only the smoke collection part immediately protrudes from the top of the tower, the smoke collection member for the barrel is lifted up by a post crane, temporarily placed at the top of the tower, and then the post crane is dismantled. After removing it, a smoke collection section was installed on top of the cylinder.

The present invention provides a construction method for erecting the top of a chimney, which is suitable for cases where the protruding height of the cylinder from the top of the steel tower is large and there is no place to temporarily place a smoke collection member at the top of the steel tower, so that the conventional construction method cannot be applied. This was proposed for the purpose of erecting the final chimney top member, by installing a cable wire lifting device between the top of the post crane installed at the top of the chimney and the above ground. The boom of the post crane is removed and suspended by the upper device, then the final chimney top member is hoisted to the top of the chimney by the lifting device, and the post of the post crane is suspended through the inside of the cylinder. This relates to a method of erecting the top of a chimney, which is characterized by the following.

As described above, in the present invention, when the final member of the chimney top is erected, a lifting device using a cable wire is installed between the post top of the post crane installed at the top of the chimney and the ground part. After the boom of the post crane is removed and suspended by the upper device, the final member of the chimney top is hoisted to the top of the chimney by the same lifting device and erected in a predetermined position, and then the post crane is lifted by the lifting device. The crane post is suspended from the chimney barrel and taken out.
Therefore, according to the present invention, even when the barrel protrudes significantly above the top of the steel tower, it can be safely and efficiently done without requiring large-scale and difficult scaffolding around the top of the barrel or assembling or dismantling a parts storage area. The final part of the chimney top is often lifted and erected.

The present invention will be described below with reference to the illustrated embodiments.

1 and 2 are a steel tower built using a well-known construction method, and a chimney barrel that protrudes significantly upwards from the steel tower 1.
Reference numeral 3 denotes a post of a post crane installed on the top of the cylinder, a wire cable 5 is stretched from the post 3 to an anchor 4 on the ground, and a carrier 6 is attached to the wire cable 5. A lifting wire 7 and a load lifting wire 8 are connected to the upper and lower ends of the carrier 6, respectively, and the lifting wire 7 is connected to the guide pulleys 9 and 10 provided at the bottom of the post 3 and the barrel 2, as well as to the anchor 4. The load lifting wire 8 is connected to the winch 12 via a guide pulley 11 disposed on the anchor 4, and by operating the winch 12, the carrier 6 is is adapted to rise and fall along the wire cable 5. The wires 5, 7, 8, the carrier 6, the guide pulleys 9, 10, 11, 13, and the winch 12 constitute the cable wire lifting device described above.

After lowering the boom of the post crane using the lifting device, the smoke collection member 14 (the figure shows the state at this stage) is hung on the load lifting wire 8, and the winch 12 is operated. The carrier 6 is lifted up along the wire cable 5 by the lifting wire 7 and is erected at a fixed position around the post 3 on the cylinder body 2.

Next, the lifting device is removed, and the post 3 is suspended into the barrel 2, disassembled, and taken out.

In this way, according to the illustrated embodiment, even if the cylinder body 2 largely protrudes from the top end of the steel tower 1, there is no need to arrange large-scale scaffolding or parts storage around the top of the cylinder body 2, and the construction can be carried out safely and efficiently. smoke collection member 14
This involves hoisting and erecting.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

The drawing is a side view showing the implementation status of one embodiment of the chimney top construction method according to the present invention. 1... Steel tower, 2... Tube, 3... Post, 4...
... Anchor, 5 ... Wire cable, 6 ... Carrier, 7 ... Lifting wire, 8 ... Load lifting wire,
9, 10, 11... Guide pulley, 12... Winch, 13... Guide pulley, 14... Smoke collecting member.

Claims (1)

[Claims] 1. When erecting the final chimney top member, a cable wire lifting device is installed between the top of the post crane installed at the top of the chimney and the above ground.
The boom of the post crane is removed and suspended by the same lifting device, and then the final chimney top member is lifted and erected at the top of the chimney by the lifting device, and the post of the post crane is suspended through the inside of the cylinder. A construction method for the top of a chimney that is characterized by a drop.