JPH11285585A - Method for constructing ferris wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a Ferris wheel constructing method high is safety without requiring a high place work. SOLUTION: Plural blocks 13 are assembled on the ground and successively supplied by mirror-symmetrically in the opposite directions so that the left and right blocks 13 are balanced, temporary equipments such as a bent equipment and a joint false work are drastically reduced and the high place work is reduced. Then, a heavy machine is made to small, safety and work efficiency are improved, a large accident is prevented, the high place work is unnecessitated and also high safety is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of erection of a ferris wheel.

[0002]

2. Description of the Related Art A conventional method of installing a ferris wheel will be described with reference to FIG.

As shown in FIGS. 9 (a) and 9 (b), a vent facility 2 is assembled from the ground around a support structure 1.
On the vent facility 2, the blocks 3 of the ferris wheel are assembled in order from below. In the erection method shown in FIGS. 9A and 9B, the work of assembling the block 3 at a high place is increased, and there is a problem in safety. In addition, a large amount of temporary equipment is required, and the cost is high.

Referring to FIGS. 10 and 11, a conventional method of erection of a ferris wheel that does not require work at a high place will be described.

As shown in FIGS. 10 (a), 10 (b) and 10 (c), the block 5 of the ferris wheel is assembled on the ground, and the drive unit 6 rotates the block 5 in one direction (clockwise). FIG.
(a) As shown in (b), a new block 5 is sequentially joined to the rotated block 5 and further rotated, and the blocks 5 are joined one after another to make the first block 5 go around to assemble the ferris wheel. Go. At this time, a biased force acts on one side of the support structure 7 due to the rotation of the block 5, so that the support structure 7 is supported by the cable member 8.

[0006]

In the conventional erection method shown in FIGS. 10 and 11, there is no need to work at a high place, but it is necessary to balance the support structure 7 with the cable material 8. After the completion of the ferris wheel, the pulling force of the cable member 8 is unnecessary, so that the support structure 7 needs to have rigidity that is unnecessary after the completion for installation.

If the driving device 6 is damaged in a state where the block 5 is biased to one side (such as the state shown in FIGS. 10B and 10C), a large group of blocks 5 returns (rotates counterclockwise).
However, there is a possibility that a serious accident may occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of erection of a ferris wheel which does not require work at a high place and is highly safe.

[0009]

In order to achieve the above-mentioned object, according to the structure of the present invention, an arc-shaped block is rotated in one direction, and then the next arc-shaped block is rotated in another direction.
The method is characterized in that a plurality of blocks are sequentially and alternately rotated in the opposite direction and a circumferential ferris wheel including a plurality of arc-shaped blocks is erected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall state of a state in which a method of erection of a ferris wheel according to an embodiment of the present invention is performed.
FIGS. 2 to 7 show the procedure for assembling the blocks, and FIG. 8 shows the structure of the rotating shaft.

As shown in FIG. 1, an arc-shaped block 1 is mounted on a ground work station 11 by using a crane 12 or the like.
Assembled 3 and left winch 14 installed at ground level
Then, the block 13 is alternately rotated and fed in the opposite direction by the right winch 15 to construct a circumferential ferris wheel 16 including a plurality of arc-shaped blocks 13.

The procedure for installing the ferris wheel 16 will be described with reference to FIGS.

As shown in FIG. 2 (a), an arc-shaped block 13a is assembled on the ground, and connected to a rotating shaft 17 by a heavy machine. After assembling the block 13a, the block 13a is rotated clockwise by the left winch 14 and pulled up as shown in FIG. 2 (b).

After the block 13a is lifted by the left winch 14, the block 13b is assembled on the ground as the next arc-shaped block as shown in FIG. 3 (a), and connected to the rotating shaft 17 by a heavy machine. After assembling the block 13b, as shown in FIG. 3B, the block 13b is rotated counterclockwise by the right winch 15 and pulled up.

After the block 13b is pulled up by the right winch 15, as shown in FIG. 4A, the block 13c is assembled, connected to the rotating shaft 17 by a heavy machine and connected to the left block 13a. After assembling and joining the blocks 13c, the blocks 13a and 13c are rotated clockwise by the left winch 14 and pulled up as shown in FIG.

After the blocks 13a and 13c are lifted by the left winch 14, as shown in FIG. 5, a block 13d is assembled and connected to the rotating shaft 17 by a heavy machine and to the right block 13b. At this time, since the sum of the left blocks 13a, 13c and the right blocks 13b, 13d is equal, even if the left winch 14 and the right winch 15 are removed, the left blocks 13a, 13c and the right blocks 13b, 13d are balanced and stable. As shown in FIG. 5 by a broken line,
The positions of the left winch 14 and the right winch 15 are changed.

After the positions of the left winch 14 and the right winch 15 have been changed, as shown in FIGS.
The assembly of No. 3 and joining to the adjacent blocks 13 and alternately rotating and feeding in the opposite direction are repeated, and the ferris wheel 16 is erected while maintaining the balance between the left and right blocks 13 group. Finally, as shown in FIG. 6C, the block 13 is closed to complete the entire Ferris wheel 16.

After the block 13 is closed, as shown in FIG. 7A, the cable 18 is connected between the rotating shaft 17 and the block 13 while rotating the entire ferris wheel 16 clockwise.
I will attach. After all the cables 18 have been attached, as shown in FIG. 7 (b), the erection shape holding material 19 is removed, and prestress is introduced into the cables 18 to complete them.

FIG. 7A and FIG. 8 showing the structure of the rotating shaft 17.
As shown in FIG. 5, after the block 13 is closed, the hub 23 that rotates clockwise during the erection and the hub 24 that rotates counterclockwise during the erection both rotate around the spindle 20 in the clockwise direction. While attaching the cable 18. Thereafter, the erection shape holding material 19 is removed. As a result, after completion, the ferris wheel 16 is rotated clockwise via the bearing 21 using only the hub 23 that rotates clockwise.

In the above-described method of erection of the ferris wheel, since the block 13 is assembled on the ground and sequentially rotated and fed in the opposite direction, temporary facilities such as vent facilities and joint scaffolds can be greatly reduced, and the height can be reduced. By reducing work,
The heavy machinery can be miniaturized, and a factory with safety and work efficiency can be realized. In addition, since the block 13 is symmetrically rotated and fed by rotation, even if the wires of the left winch 14 and the right winch 15 are cut, the left and right blocks 13
Thus, a major accident can be prevented by balancing, and safety is improved in this respect as well.

[0021]

According to the method of erection of a ferris wheel according to the present invention, after rotating an arc-shaped block in one direction and then rotating the next arc-shaped block in another direction, a plurality of the arc-shaped blocks are sequentially and alternately turned in opposite directions. Since a circular ferris wheel consisting of a plurality of arc-shaped blocks is erected by rotating the block, temporary equipment such as vent equipment and joint scaffolds can be significantly reduced, and work at heights is reduced. Thus, the size of the heavy equipment can be reduced, and a factory with safety and work efficiency can be realized. In addition, since the blocks are rotated and sent symmetrically, the left and right blocks are balanced so that a large accident can be prevented. In this respect, safety is improved. As a result, it is possible to provide a method of erection of a ferris wheel that does not require high-place work and is highly safe. Furthermore, by using a bearing between the hub and the spindle that rotates in the opposite direction to the rotation direction of the completed ferris wheel without using a bearing, it is rotated by surface contact between irons,
It is possible to reduce the cost of the bearing.

[Brief description of the drawings]

FIG. 1 is an overall situation diagram of a state in which a method of erection of a ferris wheel according to an embodiment of the present invention is performed.

FIG. 2 is an explanatory diagram of a block assembly procedure.

FIG. 3 is an explanatory diagram of a procedure for assembling a block.

FIG. 4 is an explanatory view of a procedure for assembling a block.

FIG. 5 is an explanatory view of a procedure for assembling a block.

FIG. 6 is an explanatory view of a procedure for assembling a block.

FIG. 7 is an explanatory diagram of a block assembly procedure.

FIG. 8 is a configuration diagram of a rotating shaft.

FIG. 9 is an explanatory view of a conventional method of erection of a ferris wheel.

FIG. 10 is an explanatory view of a conventional ferris wheel erection method.

FIG. 11 is a diagram illustrating a conventional method of erection of a ferris wheel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Workstation 12 Crane 13 Block 14 Left winch 15 Right winch 16 Ferris wheel 17 Rotation axis 18 Cable 19 Construction shape holding material 20 Spindle 21 Bearing 23, 24 Hub

Claims (1)

[Claims] 1. After rotating an arc-shaped block in one direction, the next arc-shaped block is rotated and fed in the other direction, and a plurality of blocks are sequentially rotated and fed alternately in the opposite direction to form a plurality of arc-shaped blocks. A method of erection of a ferris wheel, comprising erection of a circumferential ferris wheel composed of the above blocks.