JPS6035512B2 - Erection equipment for tower-like structures - Google Patents

Description

[Detailed Description of the Invention] In construction work, it is the demand of the times to save labor and improve construction speed to shorten the construction period, but on the other hand, it is necessary to ensure thorough noise prevention, environmental conservation, safe work, etc. that accompany construction work. Strict regulations have been enacted year by year, and recently it has become a social obligation to implement these matters.

From this point of view, the construction of tower-like structures has recently become more prefabricated, and many ideas are being considered for assembling plate-like units, frame units, etc. manufactured in factories on-site. By the way, mobile cranes and tower cranes are the most typical construction machines traditionally used to erect such tower-like structures, but they are also used to construct large-diameter, high-rise tower-like structures such as cooling towers. When constructing,
Each of the above-mentioned erection machines had problems and was difficult to apply. In other words, mobile cranes have limitations on the height they can be erected, making it impossible to erect structures higher than a certain level, while tower cranes can be used to construct high-rise structures, but they are limited by the diameter of the plane. It is difficult to apply to tower-like structures with a diameter exceeding 80 to 100, and is particularly suitable for use in construction shoring to stabilize cranes during construction and to ensure wind resistance and seismic stability for external wall segments during construction. There was no suitable material available, and if an attempt was made to erect a prefabricated tower-like structure using existing machinery such as a large tower crane, it would require a large amount of scaffolding, which would result in an exaggerated construction.

The present invention relates to an improvement in an erection device used to construct such a large-diameter, high-rise tower-like structure, and includes a main tower for construction installed at the vertical axis of the tower-like structure to be constructed; A connecting structure that is formed into a mold when viewed from the front from a vertical member of a book and a horizontal member that connects the upper ends of the vertical member, and is made up of an erection unit that has already been constructed halfway to construct a tower-like structure. The first and second auxiliary racks are arranged alternately in the circumferential direction so that the upper peripheral wall can be re-erected upward at positions divided into 4 and 12 equal parts of the upper peripheral wall, and the sides of the second auxiliary racks. a unit lifting device that is movable to the member;
A platform supported by each of the auxiliary foundations so as to be connected in an annular manner at a position remote from the tower-like structure, and a hoisting rock at a lateral position of the second auxiliary frame, which can be raised and lowered from the top of the main tower. an elevating frame equipped with a cart that is suspended and supported by and movable in a horizontal direction toward the vertical axis; and a lifting frame that is suspended and supported so as to be able to be lifted and lowered from the top of the main tower from a hoisting rock at a horizontal position of the first auxiliary frame. an elevating pedestal and equipped with a crane, and respective guide rails provided vertically along the wall of the tower-like structure so that each of the elevating mounts can be moved up and down along the wall of the tower-like structure; The gist of the present invention is an apparatus for erecting a tethered structure, which is characterized by having an expandable and retractable horizontal support placed between the side of the auxiliary frame and the main tower, and is highly safe using inexpensive machinery. , and enables efficient construction work.

Next, one embodiment of the present invention will be described with reference to the drawings. The present invention provides a plate-like unit and a frame so that the outer wall surface forms a hyperboloid of revolution, a polygonal folded surface shape, a conical shape, a cylindrical shape, or a polygonal plane shape that is substantially inscribed or circumscribed in a hyperbolic curved surface of revolution. As shown in FIGS. 1 and 2, in this embodiment, the tower-like structure 1 to be constructed is a rotary twin structure. The case of a curved shape will be explained as an example. The tower-like structure 1 to be constructed consists of a tower-like structure la, which has already been partially constructed, and a tower-like structure lb, which is to be constructed from now on as shown by the two-dot chain line. A main tower 2 for construction is provided at the vertical axis of a tower-like structure 1 to be constructed.

The main construction tower 2 is a branch type steel tower having a restraining rope 3, and a hoisting rock 4 is provided at the bottom, and the main tower 2 is lifted from the top of the main tower 2 via a pulley 5 provided at the top of the main tower 2. The wire rope 6 for lifting is lowered, or a hoisting rock such as a winch is provided directly on the top of the main tower 2 for erection, and the wire rope 6 for lifting is lowered from there. The wire ropes 6 are used to raise and lower the elevating frames, which will be described later, and the number of wire ropes corresponding to the number of elevating frames are lowered from the top of the main tower 2 around the main tower 2. An elevating gondola 7 or a simple elevator is provided inside the main construction tower 2, and is used for inspections, elevating and descending workers, and the like.

The construction of the main tower 2 is carried out in the same manner as when constructing a normal truss-type independent steel tower or a branch-type steel tower. At the top of the peripheral wall on the circumference of the tower-like structure la under construction, respective first work sections 8 are provided at positions 4 to 1 percent apart from the circumference, and these first work sections A second working section 9 is provided between the sections 8. That is, the first
The working section 8 and the second working section 9 are provided alternately in all directions around the circumference at positions 4 and 14 times apart from each other. Next, an embodiment of the first working section 8 will be described with reference to FIGS. 3 and 4.

The first work sections 8 are provided on the circumferential wall above the tower-like structure la in the part where the construction has been completed, at positions 4 to 14 times the circumference, on the outside and inside of the wall.

For example, when the peripheral wall is divided into 12 equal parts, the two vertical members 10a, 10a and the rock member 10b that connects the upper ends are placed at six locations in each division. One auxiliary rack side 10 is provided, and the first auxiliary rack side 1 is provided.
The vertical members 10a, 10a of 0 are the tower-like structures la that have already been erected.
In the construction unit 18 (segment) that constitutes the wall surface of
Temporarily fasten firmly with the odor of tightening bolts, etc. A bracket 11 is extended from the side 10 of the first auxiliary rack to support a working platform 12. The working platform 12 is connected in a circular ring shape at a position remote from the tower-like structure la that has already been erected. Incidentally, this platform 12 is also used to form the second work section 9. In the first work area 8, there is an elevating platform 14 equipped with a simple crane (or derrick) 13 and a scaffold.
Wall of tower-like structure la (consisting of each erection unit 18)
Guide rail 1 installed vertically along the surface of
It is possible to go up and down along 5.

When raising and lowering the lifting platform 14 along the guide rail 15, the simple crane 13 is folded upward as shown at 13' in FIG.
to raise and lower it. The elevating frame 14 is fixed to the wall of the tower-like structure la at a predetermined position by a locking device (not shown). When the elevating frame 14 is raised to the highest level, the platform 2 is inserted between the wall of the tower-like structure la so as to form a working scaffold together with the working platform 12, and this elevating frame 14 , the tower-like structure 1 is constructed by a simple crane 13.
Segment erection work and the weight of miscellaneous materials to construct the structure, work to replace the first auxiliary rack side 10 and the second auxiliary rack side 10 above as the tower-like structure 1 construction progresses,
Used for incidental work such as dismantling work scaffolding after construction.
In addition, the up and down work of the elevating frame 14 is carried out using the hoisting rock 4.
This is done by hoisting it up and lowering it through a rope sheave 24 provided at the top of the vessel. Next, an embodiment of the second working section 9 will be described with reference to FIG.

This work section 9 is provided between the first work section 8 described above, and is provided with a second auxiliary frame side 10' configured in the same manner as the first auxiliary frame 10, and is further provided with a guide rail 15.
It has an elevating frame 16 (equipped with a locking device) that is raised and lowered by a lifting wire rope 6 along the vertical axis.

This elevating frame 16 is arranged so as to directly face the inside of the work platform 12, and is mainly used to transport the unit 18, which is a component of the tower-like structure 1, from the ground to the height of the erection assembly position. , miscellaneous equipment, lifting and lowering of workers,
Used for hot water heavy work. The elevating platform 16 includes a movable cart 1 that can move horizontally in the direction of the vertical axis (tower core) of the tower-like structure 1.
7 is provided, and the construction unit 18 and the provided work scaffold are placed thereon, and together with the elevating frame 16, the construction unit 18 and the attached work scaffold are loaded with a wire rope 6 for lifting from the ground to the height of the construction assembly position.

The movable cart 17 is provided with a back plate 17' to prevent the construction unit 18 and the like from falling, and is formed into an L-shape when viewed from the side. When the elevating frame 16 rises to a predetermined position, the movable carriage 17 is moved horizontally toward the tower core as shown in FIG. be located close together.

A chain block 19 as a unit lifting device is movably attached to the horizontal member 10' of the auxiliary rack.
Alternatively, the above-mentioned erection unit 18 can be installed using an electric hoist.
A tower-like structure la is constructed by lifting the tower. At this time, the movable trolley 17 is returned to its original position as shown in the opening in FIG. 7, and the erection unit 18 is safely and accurately installed at the determined position. When the lifting frame 16 is raised to the highest level, it enters the inside of the work platform 12 and lifts the platform 1.
Together with 2, it forms a work scaffold.

In FIG. 4, 16' indicates a state located below. In addition, the hook 20 shown in FIG.
This is for lifting with the simple crane 13 mentioned above. The installation work of the construction unit 18 performed by the above-mentioned elevating frame 16, movable trolley 17, and chain block 19 can be performed simultaneously at a plurality of locations surrounding the tower-like structure la. The installation of the construction unit 18 in the first work section 8 is carried out using a simple crane 13.
As shown in FIG. 3, the construction unit 18 on the movable trolley 17 is suspended and moved to the first work section 8 side by a worker by pulling a rope or the like.

The guide rail 15 is used to guide the lifting frames 14 and 16 mentioned above when raising and lowering them.
It is installed in the vertical direction along the outer surface of the wall of the tower-like structure la that has already been constructed, in accordance with the arrangement of the work section 9.

This guide rail 15 not only serves as a guide for the elevating frames 14 and 16, but also serves as a reinforcement for the tower-like structure la under construction. It is fastened to the wall surface of the connecting structure la by bolting or the like. The guide rails 15 are made into blocks of appropriate length, and can be sequentially added upward as the tower-like structure 1 is constructed. Further, in the case of the first work section 8, the guide rail 15 at the lower part where construction has been completed may be removed and sequentially attached upward. Such attachment and detachment of the guide rail 15 is performed using the simple crane 13, the working platform 12, the movable cart 17, and the like. Main tower for erection 2
As shown in Figs. 1 to 4, a horizontal support 21 is provided between the auxiliary frame transverse body 10 or 10' to ensure the horizontal rigidity of the tower-like frame transverse body la during erection. , serves as reinforcement and as a communication deck between the main construction tower 2 and the construction site.

The horizontal support 21 can expand and contract according to the shape of the tower-like structure 1.

Furthermore, the end of the horizontal support 21 on the side of the main construction tower 2 is pivoted to a ring beam 22 that is lifted up by a lifting wire lobe 6 and surrounds the main tower 2, as shown in FIGS. 5 and 6. It is designed so that it can move upward together with the ring beam 22 as the construction progresses. (Note that 23 in FIG. 3 indicates a fixing pin or bolt.) According to the apparatus for constructing a tower-like structure of the present invention, the following excellent effects can be achieved.

'i} Since the first and second auxiliary rack sides are installed alternately along the circumference in 4 to 12 equally divided positions on the upper peripheral wall of the tower-like structure that is currently under construction (completed), multiple Units can be erected at the same time in several locations.

Therefore, work efficiency is increased and the construction period is shortened, and since the construction period is shortened, the period during which pollution such as noise occurs can be reduced, and favorable results in terms of environmental conservation can be obtained. The rigid elevating frame has good wind resistance and stability because it is raised and lowered along guide rails provided on the walls of the traditional structure.

[ii0 The guide rail can be used to supplement the outer wall of the tower-like structure, so it has great structural and construction stability against earthquakes, typhoons, etc., and can maintain relatively accurate installation accuracy. .

'W By aligning the sides of the supplementary ribs, guide rails, main tower for erection, horizontal support, platform, etc., a very stable frame system can be constructed, so safe work can be expected.

M From the above clause, and from the fact that the lifting platform is suspended from the top of the main construction tower by a hoisting rock so that it can be moved up and down along the guide rail on the wall of the structure,
It is also possible to deal with tower-like structures having a large planar diameter.

M - From the above-mentioned point, and as the work progresses, it is possible to add guide rails and move the sides of the auxiliary racks, platforms, etc. upwards, so it is possible to cope with the increase in the height of tower-like structures. can.

Tsuyoshi: Since there is no need for large tower cranes or large amounts of scaffolding as in the past, the entire device is inexpensive and construction costs can be reduced.

[Brief explanation of drawings]

Figure 1 is a plan view of the tower-like structure under construction, Figure 2 is a vertical sectional view taken along the Rolo line in Figure 1, Figure 3 is an enlarged view of the main parts of Figure 2, and Figure 4 is a diagram of the work area. 5 is a partial front view of the horizontal support, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a partial explanatory view showing the working process. 1... Tower-like structure, la... Tower-like structure, 2... Main tower for construction, 8... First work section, 9... ...Second work area, 10.
....First auxiliary rack side, 10'...Second auxiliary rack side, 14,16...Elevating rack, 15...
Guide rail, 21...Horizontal support. Figure 1 Figure 2 Figure 5 Figure 6 Figure 3 Figure 7

Claims (1)

[Claims] 1. A main tower for erection installed at the vertical axis of a tower-like structure to be constructed, two vertical members, and a horizontal member connecting the upper ends of the vertical members, formed into a ■ shape when viewed from the front,
In order to construct a tower-like structure, they are arranged alternately in the circumferential direction at positions divided into 4 to 12 equal parts on the upper peripheral wall of a tower-like structure consisting of erection units that have already been constructed halfway. A first and second auxiliary frame, a unit lifting device movably provided on a horizontal member of the second auxiliary frame, and each of the auxiliary units connected in a ring at a position remote from the tower-like structure. a platform supported by the frame; and a dolly that is suspended from the top of the main tower so that it can be raised and lowered by a hoist at the second auxiliary frame position, and that is movable in the horizontal direction toward the vertical axis. an elevating frame that is suspended from the top of the main tower at the first auxiliary frame position by a hoist and is equipped with a crane; each of the elevating frames is a tower-like structure; A husband's guide rail that can be added upward along the wall of the tower-like structure so that it can be moved up and down along the wall, and an expandable horizontal support that is arranged between the auxiliary frame and the main tower. , A tower-like structure erection device comprising: