JPS59134279A - Method and apparatus for building iron tower shaped composite chimney - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technological Classification and Field> The disclosed technology provides a method for connecting multiple chimneys, for example, three chimneys, to one steel tower.
It belongs to the technical field where construction is done in a busy manner.

Explanation of the gist> The invention of this application is, for example, a frame i'u steel tower with a triangular plan cross section. When constructing a stack of stacked chimneys such as 3 chimneys, each curved smoke collecting part at the upper end is shifted and fixed to the cylindrical part 1 directly below it, and the lower cylindrical parts are successively connected to each stage. Pass through the support and build upwards,
This invention relates to a method for constructing a steel tower-type collective chimney, in which a plurality of curved smoke collection parts facing each other at the top of the tower are restored to their normal postures and fixed to the cylindrical parts directly below them, and a device for directly using the same. In particular, the cylindrical part (directly below the bent smoke collecting part) is slid back to the minimum amount of movement that can pass through the upper and lower double membrane cylindrical support provided in the steel tower through a device, Construction of a steel tower-type collective chimney in which the lower cylindrical part is connected, the support is passed through and raised, and after the uppermost support has passed, the bent smoke collection part is properly returned to the cylindrical part directly below and fixed via a device. This invention relates to a method and a device directly used therefor.

<Prior art> As is well known, many factories and plants these days are of a centralized type, and devices with smoke exhaust functions such as boilers are also concentrated, and therefore chimneys are often installed close to each other. For this reason, recently, so-called steel tower-type collective chimneys, in which three chimneys are grouped together and supported within a reinforcing steel tower, have been widely adopted.

As a design feature to deal with pollution problems such as air pollution, most of the tower-shaped collective chimneys have a curved smoke collection structure in which the top ends are brought together to achieve an atmospheric dilution effect.

By the way, as mentioned above, the seed collection chimney is reinforced by a steel frame tower and has a considerable height, so it is necessary to support the chimney body from wind pressure and earthquakes.

Therefore, instead of the steel tower directly supporting the chimney, a structure is adopted in which a short cylindrical support body is provided at each predetermined span in the height direction of the steel tower to support the chimney.

A safe and efficient method for constructing the seed tower-type collective chimney is to stack the units from bottom to top and add unit cylindrical bodies downward.

<Problems with the Prior Art> However, there are the following problems with the method of constructing a steel tower-type collective chimney having a bent smoke collection section above.

In other words, when the cylindrical part directly below the bent smoke collecting part is fixed in a fixed position and raised, and the lower cylindrical parts are fixed in sequence, the bent smoke collecting part and the directly below part are fixed to the bent smoke collecting part. Since the path of the cylindrical part becomes different, it becomes impossible to pass through the cylindrical support and rise. Therefore, in the reverse pile construction method, it is not possible to provide the cylindrical support in advance on the steel tower. The problem was that it was an afterthought and difficult to install.

To deal with this, a construction method has been devised in which the bent smoke collecting section is connected with a pin to the cylindrical section directly below and the stack is reversely raised. In order to do this, the bending assembly of heavy objects is a large block, and the work must be done at high places, which is inconvenient in terms of safety and workability.

<Objective of the Invention> The object of the present invention is to solve the problems of the reverse pile construction of steel tower-type collective chimneys based on the above-mentioned prior art, and to solve the problem of the reverse pile construction of steel tower-type collective chimneys based on the above-mentioned prior art, and to connect the upper end bent collecting part and the cylindrical part directly below to the inner support part of the steel tower. An excellent method for constructing a steel tower-type collective chimney, which enables reverse pile construction by temporarily holding a posture 1 that allows passage through the stack, and which is beneficial to chimney applications in various industries, and the construction method' The purpose of this invention is to provide a device for direct use of VC.

<Structure of the Invention> In accordance with the above-mentioned object, the structure of the present invention, which is summarized in the above-mentioned claims, is to solve the above-mentioned problems by integrally providing a vertically multilayer support for the cylindrical part of a collective chimney. Then, each of the bent smoke collecting parts at the upper end of a predetermined number of collective chimneys is temporarily attached to the cylindrical part directly below so that the support can pass from below. Each beam is inscribed inside the cylindrical part and temporarily attached, and a pole screw is screwed so that it can approach the free end of the bracket whose base is fixed to the beam, and the above-mentioned support passing position is bent. Slide bank the collection part to fix the relative posture, and in that state, sequentially join the lower cylindrical parts, raise 11ζ and bend the smoke collection part to pass the support, and bend the final support at the top of the tower. Once the smoke collection section has passed, rotate the pole screw of the above device and return it to the normal position via the bracket against the cylindrical section directly below the bent smoke collection section, fix it, remove the device, and hold the collective chimney on the steel tower. This was achieved by taking technical measures to

<Example> Next (Example of the invention of this application will be described below with reference to the drawings.

1 to 4 (the embodiments shown in FIGS. 1 to 4) are such that a device 1 for constructing a steel tower-type collective chimney, which constitutes the gist of the invention of this application, is interposed between a curved smoke collecting section 2 at the upper end of the chimney and a cylindrical section 3 immediately below it. A mode in which the bent smoke collection part 2 and the cylindrical part 3 are temporarily fixed is shown.
A bracket 5.5' is welded to the base of a pair of beams 4.4' which are brought into contact with each lower opening and an upper opening of the pair of beams 4.4'. is arm 6.
At 6', it is possible to fix the frame in a cross-shaped manner at a predetermined opposing interval by fastening the poles 1, 1.7', etc. to the holes 1, 1, 7', which are drilled in the longitudinal direction in a large number in the beam 4,4'. .

A pole screw 8 is screwed onto the female thread of the bracket 5.5', and a square shaft portion 9 at one end thereof has a
- The handle 10 is made detachable, making it a one-set device.

As shown in FIG. 4, the base stem 11 of the pole screw 8 is rotatably mounted on one bracket 5' and is restrained from moving in the axial direction.

When constructing a steel tower-type collective chimney, as shown in Fig. 5.6, predetermined multi-stage cylindrical support bodies 13, 13,... are set at locations 14, 14,... for the set area 12. 5. Then, as shown in FIG. 5, the construction equipment 1 is used to join the upper end smoke collecting section 2 and the cylindrical section 3 directly below it, and the three pieces are set inside the vaginal steel tower 15. .

The above-mentioned supports 13, 13... are the bent smoke collection parts 2 described later.
．． 2.2 has a sufficient inner diameter to pass through, and
Depending on the design, the supports 13, 13, . . . may have a polygonal shape inscribed in the setting portions 14, 14, .

That is, as shown in Figs. 1 to 3, the construction device 1.1 is prepared for one chimney, and the beam 4.4 is first placed in parallel with the inner circumferential surface 1 of the lower opening of the bent smoke collecting section 2. Also, the beams 4', 4' are inscribed in parallel to the inner peripheral surface of the upper opening of the cylindrical part 3 and fixed temporarily by welding, so that the bent smoke collection part 2 and the cylindrical part 3 are connected with a slight gap between them. After this work, the bent smoke collection section 2,
Attach the handle 10 to the corner core frame 9 at the end of the pole screw 8, which is screwed in advance to the bracket 5.5' of the cylindrical part 3 directly below, and rotate it, so that the bent smoke collecting part 2 is attached to the cylindrical part 3 directly below. Slide bank and displace to a preset relative posture in which both can pass through the cylindrical support 13 from below.

After that... remove the handle 10 and connect the tip to the opposing beam 4',
The bolt hole of the arm 6.6' and the beam 4
．． Screw bolts 7.7... into bolt holes 4' (2
, the bent smoke collecting section 2 and the cylindrical section 3 are temporarily fixed.

This state is shown in FIG.

Therefore, these set units were pulled up in the -L direction using an appropriate lifting device provided on the steel tower 15, and the bent smoke collection section 2.
2.2 to the first stage support 13.13.13...7
1 (under the cylindrical part 3.3.3 directly below).
As shown in FIG. 7, the second lower cylindrical portion 3.3.3 is welded and fixed integrally with the directly lower cylindrical portion 3.3.3 during ground work.

In this way, while sequentially pulling up each collective chimney 16 forming body, the bent smoke collection part 2 is passed through the supports 13.13... of each stage, and the lower cylindrical parts 3.3... are welded and joined. They will be integrated and constructed in reverse order.

As shown in FIG. 8 1/c, after the bent smoke collecting section 2 passes the uppermost support 13, the arm 6.6 of the construction equipment 1
', remove the bolts 7, 7..., attach the handle 10 to the corner core frame 9 at the end of the pole screw 8 again, and rotate it in the opposite direction. Move the smoke part 2 inward ((Advance) so that the circumferential parts of both sides match, remove the device 1, cut the weld on the beam 4.4',
The circumferential parts of both are fully welded, and the bent smoke collection part 2 and the cylindrical part 3 directly below are assembled.
and are integrated and fixed in the normal position.

Next, the support body 13.13... and the cylindrical part 3.3
A slide unit (not shown) is loaded between the cylindrical portions 3.

Finally, as shown in FIG. 9, the collective chimney 16 is lifted to the set height, and the lowest cylindrical portion 3 is added and welded to complete the actual construction.

<Other Examples> It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments, and for example, as a set device.
・Instead of the handle, a simple reversible motor may be installed and remote control operation may be used. Many other aspects can be adopted.

<Effects of the Invention> Hereinafter, according to the invention of this application, basically in the construction of a steel tower-type collective chimney, when the reverse stacking method is used, the upper end bent smoke collecting part and the cylindrical part directly below the cylindrical part holder of the steel tower are moved downward. It becomes possible to pass through the tower from 5 to 5, and it becomes possible not only for the reverse pile construction section but also for the advance construction of the steel tower and the advance attachment of the holder, so that the steel tower collective chimney can be built smoothly and efficiently as designed.
It has the excellent effect of allowing safe construction.

In addition, since the bent cylinder part does not rotate relative to the cylindrical part directly below, but is displaced by forward and backward movement, the bent smoke collection part, which has a considerable weight, is displaced in a stable state, and the center of gravity moves on a straight line. It is easy to work at heights and has excellent safety effects.

Since the device used directly in the collective chimney construction method is formed as a unit, it can be easily installed and removed from the bent smoke collection section and the cylindrical section directly below it, and can be used repeatedly. Therefore, the same standard product can be used for a plurality of stacked chimneys, and therefore, the accuracy can be kept the same, and the excellent effect of guaranteeing high construction accuracy is achieved.

Furthermore, since the number of tasks required is small and efficient work is possible, there is an excellent effect of allowing work at heights to be carried out safely.

In addition, by attaching a pair of beams that abut the inner periphery of the curved smoke collecting section and the cylindrical section via a bracket, and further screwing a pole screw to the bracket, the bracket can be removed by rotating the pole screw. The bending smoke collecting part slides back and forth on its diameter relative to the cylindrical part directly below through the beam, and since it can be finely adjusted, the bending smoke collecting part moves stably and slowly. After passing through the support, the bent smoke collection section at the highest position can be returned to its original position at a slow speed.
This has the effect of allowing quiet, stable and accurate work without the chimney fluctuating.

[Brief explanation of the drawing]

The drawings are detailed explanatory drawings of the invention of this application, and FIG. 1 is an integral vertical sectional side view of the bent smoke collecting section and the cylindrical section attached to the device, and FIG.
Figure 3 is a longitudinal sectional front view of the same, Figure 3 is a cross-sectional plan view of the same, Figure 4 is an explanatory diagram of the operation of the pole screw, Figure 5 is a side view of the first set of chimneys relative to the steel tower, Figure 6 is a cross-sectional plan view of the support, and Figure 7 is a cross-sectional plan view of the same. The figure is a side view illustrating the joining of the second stage cylindrical part, FIG. 8 is a side view illustrating the repositioning of the bent smoke collecting part, and FIG. 9 is a side view illustrating the completed chimney. 15... Steel tower, 2... Bent smoke collection section, 3...
... Cylindrical part, 16... Collective chimney, 13...
・Support, 4.4'...beam, 5.5'...
Bracket, 8... Bowl screw Fig. 5 14 Fig. 8 Fig. 6 Fig. 9

Claims (2)

[Claims] (1) Shift the bent smoke collecting section to the plurality of upper end bent smoke collecting sections in the existing steel tower, connect the lower unit cylindrical section, build it in a reverse stack, and raise it. In a method of constructing a steel tower-type collective chimney in which a bent smoke collecting section is normally restored and fixed to a cylindrical section immediately below, the above bent smoke collecting section is installed in the cylindrical tower directly below the cylindrical section. Slide it into the supporting body passing position and fix it, then attach the above cylindrical part (
At the same time, the lower cylindrical part is joined to the upper cylindrical part and the upper end bent smoke collecting part, and the above support is passed through and raised.After passing through the uppermost support, the bent smoke collecting part is A method for constructing a steel tower-type collective chimney, characterized in that the cylindrical part directly below the chimney is fixed in its normal position. (2) In a device that is directly used in the method for constructing steel tower-type collective chimneys by back stacking within the steel tower, both ends can be fixed to each of the bent smoke collecting sections at the upper ends of a plurality of collective chimneys and the connecting cylindrical sections directly below them. A pair of beams fixes at least one pair of brackets at their proximal ends to each beam, and a ball screw is threaded onto the outlet end of each bracket to allow the brackets to approach each other relative to each other. A construction device for a steel tower-type collective chimney, characterized in that the two beams are connected together.