JPH1046862A - Method and device for executing tank peripheral wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability at the execution of a tank peripheral wall even in a large-scale tank for waterworks, etc. SOLUTION: A movable carriage 25 movable along the internal surface of the peripheral wall of a tank on the side inner than the place of the disposal of the peripheral wall is installed to an execution device 11 on the peripheral wall of the tank. Supports 32 are disposed in upright onto the movable carriage 25, and a lifting-lowering mechanism 37 for lifting and lowering veneer 13a for the peripheral wall is arranged onto the supports 32. The veneer 13a for the peripheral wall is lifted by the lifting-lowering mechanism 37 whale the movable carriage 25 for the execution device 11 is moved along the internal surface of the peripheral wall from the inside of the place of the disposal of the peripheral wall, and the peripheral wall of the tank is formed gradually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for constructing a peripheral wall of a tank for forming a peripheral wall of a large tank for water supply or the like.

[0002]

2. Description of the Related Art Conventionally, when forming the peripheral wall of a large tank of this type, scaffolds are installed outside and inside the standing position of the tank peripheral wall, and a crane truck is placed outside the standing position of the tank peripheral wall. Had been installed. Then, while lifting the peripheral wall veneers one by one to a predetermined height position with a crane truck, the peripheral wall veneers are sequentially welded and fixed on a scaffold to form a tank peripheral wall.

[0003]

However, the inside of the upright position of the tank peripheral wall is leveled and concreted in order to install the tank bottom plate, but the outside of the upright position of the tank peripheral wall is leveled. Not done. Therefore, as in the above-described conventional method of constructing a tank peripheral wall, when a crane vehicle is installed outside the standing position of the tank peripheral wall and the work of lifting the veneer for the peripheral wall is performed by the crane vehicle, the crane vehicle Cannot be installed in a stable state, and the crane truck cannot be moved as the operation progresses.

[0004] Therefore, it is necessary to level not only the inside of the standing position of the tank peripheral wall but also the installation location of the crane vehicle outside the standing position of the tank peripheral wall. In addition, using a large crane truck, it is necessary to fix the crane truck at a fixed location outside the standing position of the tank peripheral wall, and to lift the veneer veneer without moving the crane truck. is there. For this reason, there has been a problem that work efficiency is significantly reduced. In particular, when the tank peripheral wall is erected on a slope such as a hillside, this problem has been prominent.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method and an apparatus for constructing a tank peripheral wall capable of improving work efficiency when constructing the tank peripheral wall. To provide.

[0006]

According to a first aspect of the present invention, there is provided a tank peripheral wall forming method in which a plurality of peripheral wall veneers are welded and fixed to form a tank peripheral wall. The gist of the present invention is to form a peripheral wall of a tank while moving a construction apparatus having an elevating mechanism for moving the tank from inside a standing position of the peripheral wall of the tank along the inner surface of the peripheral wall.

According to a second aspect of the present invention, in a tank peripheral wall construction apparatus for forming a peripheral wall of a tank by welding and fixing a large number of peripheral wall veneers, the tank peripheral wall is formed from the inside of the standing position of the tank peripheral wall. The gist is to have a moving table movable along the inner surface, a column erected on the table, and a lifting mechanism arranged on the column for raising and lowering the veneer for the peripheral wall. I do.

According to a third aspect of the present invention, in the apparatus for constructing a tank peripheral wall according to the second aspect, a supporting mechanism is provided inside a standing position of the tank peripheral wall, and the movable table is a cylindrical tank. The gist is that the movable table is rotatably supported by the support mechanism so as to be rotatable along the inner surface of the peripheral wall.

According to a fourth aspect of the present invention, in the apparatus for constructing a tank peripheral wall according to the third aspect, a balancer for maintaining a balance between the movable table, the support, and the elevating mechanism is provided.
The gist is that the balancer is attached to the support mechanism.

[0010] According to a fifth aspect of the present invention, in the construction apparatus for a tank peripheral wall according to any one of the second to fourth aspects,
The gist of the present invention is that a plurality of scaffolds are provided on the support and the auxiliary support.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 2, the tank peripheral wall construction apparatus 11 of this embodiment is used when the peripheral wall 13 is erected by welding and fixing a large number of peripheral wall veneers 13a during construction of the tank 12. used. That is, at the time of construction of the tank 12, the construction site is leveled flat, and the concrete installation base 14 is cast and formed. And this installation table 14
After the bottom plate 15 is disposed thereon, a cylindrical peripheral wall 13 is formed upright on the outer peripheral edge of the bottom plate 15. At this time, the construction device 11 is installed on the bottom plate 15 so as to be located inside the standing position of the peripheral wall 13. Further, after the standing of the peripheral wall 13 is completed, the construction device 11 is removed and the peripheral wall 13 is removed.
A roof 16 is formed at the upper end of the vehicle.

Therefore, the construction device 11 for the tank peripheral wall will be described in detail. As shown in FIGS. 1 to 3, the support mechanism 20 is installed on the bottom plate 15. This support mechanism 20
Is fixed to the center of the upper surface of the bottom plate 15, and a pair of support arms 22 are rotatably supported around the support shaft 21. The two support arms 22 are extended in a symmetrical direction about the support shaft 21 and include a pair of rods 23 and a plurality of connecting rods 24 connecting the rods 23.

The moving table 25 is swingably supported at the tip of the one support arm 22 via a pin 26, and a plurality of wheels 28 are mounted on the lower surface thereof via a pair of mounting tables 27. The motors 29 for movement are arranged on the sides of each mounting stand 27, and the wheels 28 are rotated by these motors 29, so that the moving stand 25 is located inside the standing position of the peripheral wall 13 of the tank 12, It is rotated and moved along the inner surface. A pair of fixing cylinders 30 are disposed on the side of the moving table 25, and a pressing body 31 is provided at the tip of the piston rod.
Is attached. And, both fixing cylinders 30
Is operated, the pressing body 31 is pressed against the bottom plate 15 of the tank 12, and the movement of the movable table 25 is restricted.

A pair of columns 32 are erected at both ends of the upper surface of the movable table 25 via pins 33 so as to be foldable and rotatable.
A bracket 34 is erected between the upper ends, and a plurality of connecting rods 35 are connected and arranged between the intermediate parts. A pair of connecting bars 36 are provided continuously between both ends of the bracket 34 and the base end of the support arm 22, and the supporting bars 32 hold the two columns 32 on the movable table 25.

An elevating mechanism 37 is mounted on the bracket 34 via a mounting arm 38. This lifting mechanism 3
Numeral 7 denotes a hoist crane, a hook 39 for suspending the single plate 13a for the peripheral wall, a winding drum 40 for raising and lowering the hook 39, and a hoist motor 4 for rotating the winding drum 40.
1 is provided. As shown by a chain line in FIGS. 1 and 2, the single plate 13 a for the peripheral wall is suspended at the hook 39, and is rotated at a predetermined assembly height position by the rotation of the winding drum 40 by the hoisting motor 41. Can be lifted up.

A plurality of stages of scaffolds 42 are provided between the columns 32 at predetermined intervals. The stairs 43 are provided on the outer surfaces of the both columns 32, and the workers can reach the scaffold 42 at a predetermined position by using the stairs 43. Then, on each of the scaffolds 42, the worker receives the peripheral wall veneer 13 a from the elevating mechanism 37,
Can be performed.

The auxiliary carriage 44 is swingably supported at the tip of the other support arm 22 via a pin 26 so as to be arranged symmetrically with respect to the carriage 25. The auxiliary moving table 44 is configured to have the same structure as the moving table 25 described above, and includes a pair of mounting tables 27, a plurality of wheels 28, a moving motor 29, a pair of fixing cylinders 30, and a pressing body 31. ing.

A pair of auxiliary columns 45 are provided on the auxiliary moving table 44.
Are erected at both ends of the upper surface via pins 33 so that they can be folded and rotated. These auxiliary columns 45 are the columns 3 described above.
2 are connected to each other by a bracket 34 and a plurality of connecting rods 35, and are held upright by a pair of connecting bars 36. Also, a plurality of steps of scaffolds 42 and stairs 43 are arranged on the auxiliary support 45 as in the case of the support 32. The auxiliary moving table 44 and the auxiliary column 45 maintain the weight balance of the moving table 25 and the column 32 arranged at symmetric positions.

Next, a description will be given of a construction method when the peripheral wall 13 of the tank 12 is erected using the tank peripheral wall construction apparatus 11 configured as described above. Well, tank 1
At the time of construction 2, as shown in FIG. 2, the construction site is leveled and the surface of concrete
4 is formed by casting. Thereafter, the bottom plate 15 is disposed on the installation table 14, and the cylindrical peripheral wall 13 is formed upright on the outer peripheral edge of the bottom plate 15. At this time, the construction device 11 is installed on the bottom plate 15 so as to be located inside the standing position of the peripheral wall 13, and the peripheral wall 13 is formed upright using the construction device 11.

That is, as shown in FIGS. 2 and 3, when the support mechanism 20 of the construction apparatus 11 is installed at the center of the upper surface of the bottom plate 15, the movable table 25 and the auxiliary movable table 44 are located inside the standing position of the peripheral wall 13. Proximity arrangement. Then, the support 32 and the auxiliary support 4 are placed on the movable support 25 and the auxiliary support 44.
The elevating mechanism 37 is disposed at the upper end of the column 32 and supported.

In this state, when the moving motor 29 is started, the moving table 32 and the auxiliary moving table 44 are rotated along the inner surface of the peripheral wall 13, and the elevating mechanism 37 is disposed at the position where the peripheral wall 13 is formed. You. Then, the hook 3 of the lifting mechanism 37
When the winding drum 40 is rotated by the hoisting motor 41 with the peripheral wall veneer 13a hung on the peripheral wall veneer 9, the peripheral wall veneer 13
a is lifted to a predetermined assembly height position.

Then, when the operator moves the support 32 and the auxiliary support 4
The climber climbs the scaffold 42 of No. 5 and receives the peripheral wall veneer 13a from the elevating mechanism 37 on the scaffold 42 and sequentially assembles it by welding. In this manner, in a state where the movable table 25 is arranged inside the standing position of the peripheral wall 13 of the tank 12, while being moved along the inner surface of the peripheral wall 13, the lifting / lowering mechanism 37 on the support column 32 causes the single plate for the peripheral wall to be moved. 13a is lifted, and the peripheral wall 13 of the tank 12 is formed upright in order.

The effects that can be expected from the above embodiment will be described below. (A) In the method for constructing a tank peripheral wall in the above embodiment, the construction apparatus 11 is installed inside the standing position of the peripheral wall 13 of the tank 12 and the construction apparatus 11 is attached to the peripheral wall 1.
3 is lifted up by the elevating mechanism 37 while moving along the inner surface of the
Is formed. At this time, the tank 12
The inside of the standing position of the peripheral wall 13 of the
In order to set up, the ground is leveled flat, and a concrete setting base 14 is cast on the surface. For this reason, the construction apparatus 11 can be installed in a stable state.
Then, while smoothly moving the construction device 11 along the inner surface of the peripheral wall 13 of the tank 12, the lifting operation of the peripheral wall veneer 13a can be efficiently performed. That is, the place where the construction apparatus 11 is to be installed is leveled beforehand in order to install the bottom plate 15 of the tank 12, and a concrete installation base 14 is provided on the surface thereof. Therefore, the construction device 1
There is no need to provide a special step of leveling the place where the 1 is installed. Therefore, the work efficiency can be improved particularly when the tank peripheral wall is erected on a slope such as a hillside.

(B) The construction apparatus 11 is provided with a movable table 25 movable along the inner surface of the peripheral wall 13 from the inside of the standing position of the peripheral wall 13 of the tank 12, and is erected on the movable table 25. The column 32 includes a column 32 and an elevating mechanism 37 disposed on the column 32 to raise and lower the peripheral wall veneer 13a.
For this reason, in a state where the movable table 25 is arranged inside the standing position of the peripheral wall 13 of the tank 12, while moving along the inner surface of the peripheral wall 13, the lifting and lowering mechanism 37 on the column 32 moves the single plate for peripheral wall 13 a. By lifting, the peripheral wall 13 of the tank 12 can be easily formed.

(C) In the construction apparatus 11, the movable table 25 is rotatably supported by the support mechanism 20 so that the movable table 25 can be rotated and moved along the inner surface of the cylindrical peripheral wall 13. Therefore, when the peripheral wall 13 of the tank 12 has a cylindrical shape, the peripheral wall 13 of the tank 12 can be easily formed while rotating the moving table 25 via the support mechanism 20.

(D) In the construction apparatus 11, an auxiliary moving table 44 for maintaining a weight balance is continuously provided on the support mechanism 20 so as to be arranged at a position symmetrical to the moving table 25. An auxiliary support 45 is provided upright. For this reason,
When the peripheral wall 13 of the tank 12 is formed while rotating the movable table 25 via the support mechanism 20, the weight balance of the movable table 25 and the column 32 is maintained by the auxiliary movable table 44 and the auxiliary column 45. In addition, the movable table 25 can be easily rotated and moved along the inner surface of the cylindrical peripheral wall 13.

(E) In the construction apparatus 11, a plurality of scaffolds 42 are provided on the support 32 and the auxiliary support 45. For this reason, there is no need to install a working scaffold at the standing position of the peripheral wall 13 of the tank 12, and the welding work of the peripheral wall veneer 13a is easily performed by using the scaffold 42 of the column 32 and the auxiliary column 45. be able to.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
Will be described with reference to FIG. In addition, this second
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

In the second embodiment, the moving table 2
One support column 32 is erected at the center of the upper surface of 5. Wires 46 are respectively mounted between both ends of the moving table 25 and upper ends of the columns 32. A connecting bar 36 is provided between the upper end of the support 32 and the proximal end of the pointing arm 22.
Are connected. Each of the wires 46 and the connecting bar 36
Thus, the column 32 is held on the movable table 25 in an upright state. A mounting arm 3 is provided at the upper end of the column 32.
The lifting mechanism 37 is supported via 8. Further, in addition to the lower portions of both mounting tables 27, a plurality of wheels 28 are also mounted at the lower center of the moving table 25, and the columns 32 and the lifting mechanism 3
7 is directly received.

Therefore, also in the second embodiment,
Almost the same functions and effects as those of the first embodiment can be achieved. In addition, according to the second embodiment, since the plurality of wheels 28 are also attached to the lower center of the movable base 25, the support 32 and the elevating mechanism 37 can be stably supported.

The present invention can be embodied with the following modifications. (1) The auxiliary carriage 44 and the auxiliary support 45 are connected to the carriage 25
And another mechanism for maintaining the balance of the column 32 is appropriately changed. For example, the scaffold 42 provided on the auxiliary support 45
By omitting the stairs 43 and the stairs 43 and attaching a balance weight corresponding to the weight of the stairs 43 to the auxiliary support 45, the configuration of the entire apparatus 11 is simplified. Alternatively, the entirety of the auxiliary moving base 44 and the auxiliary strut 45 is replaced with a balancer having an appropriate size and shape, and the balance of the auxiliary moving base 44 and the auxiliary strut 45 is maintained by the balancer.

(2) Lifting mechanism 37 and single plate 13a for peripheral wall
Is attached to the auxiliary support 45. In this way, even when the weight of the elevating mechanism 37 and the single plate 13a for the peripheral wall is large, the balance between the movable table 25 and the support columns 32 can be maintained. Conversely, when the weight of the lifting mechanism 37 and the peripheral wall veneer 13a is sufficiently small with respect to the weight of the movable base 25 and the support 32, the movable base 2 can be provided without providing the auxiliary support 45 with a balance weight.
5 and the support 32 can be kept in balance.

(3) Also in the first embodiment, similarly to the second embodiment, a plurality of wheels 28 are attached to the center of the lower part of the movable base 25. With this configuration, in the first embodiment, the column 32 and the elevating mechanism 37 can be more stably supported.

(4) In each of the above embodiments, the structure of the support mechanism 20, the moving table 25, the support 32, and the elevating mechanism 37 is appropriately changed. (5) The construction device for a tank peripheral wall of the present invention is configured to be applicable to erecting and forming a polygonal cylindrical tank peripheral wall.

Although the embodiments have been described above, technical ideas other than the claims that can be grasped from the embodiments will be described below together with their effects. (B) In the apparatus for constructing a tank peripheral wall according to claim 4, the balancer has the same configuration as the movable base, the support, and the elevating mechanism, and the balancer has a tank peripheral wall disposed symmetrically with the movable base. Construction equipment.

With this arrangement, the balance between the movable base, the support, and the lifting mechanism can be reliably maintained. (B) The apparatus for constructing a tank peripheral wall according to claim 4, wherein the balancer has the same configuration as the movable table and the support, and the balancer is arranged at a position symmetrical to the movable table.

In this way, when the weight of the elevating mechanism is sufficiently smaller than the weight of the moving table and the support, the balance between the moving table, the support and the elevating mechanism can be reliably maintained.

(C) In the tank peripheral wall construction apparatus according to any one of claims 2 to 5, a tank mounting base is formed inside the standing position of the tank peripheral wall, and the tank mounting base is provided on the mounting base. A bottom plate of a tank is provided, and the moving table is a construction device for a tank peripheral wall installed on the bottom plate.

In this way, it is not necessary to provide a special step of leveling the place where the construction apparatus is installed, and the work efficiency can be improved.

[0041]

According to the first aspect of the present invention, it is possible to provide a method for constructing a tank peripheral wall capable of improving work efficiency when constructing the tank peripheral wall. That is, when constructing the tank peripheral wall, the construction device is installed inside the standing position of the tank peripheral wall. Then, while moving this construction apparatus along the inner surface of the tank peripheral wall, the peripheral wall veneer is lifted by the elevating mechanism to form the tank peripheral wall. At this time, the inside of the standing position of the tank peripheral wall is leveled and concreted to install the tank bottom plate. For this reason, the construction apparatus can be installed in a stable state. Then, while moving the construction device along the inner surface of the tank peripheral wall, the lifting operation of the peripheral wall veneer can be efficiently performed.

According to the invention described in any one of the second to fifth aspects, it is possible to provide a tank peripheral wall construction apparatus capable of improving work efficiency when constructing a tank peripheral wall.

In the tank peripheral wall construction apparatus according to the second aspect, the moving table is arranged inside the standing position of the tank peripheral wall, and the moving mechanism is moved along the inner surface of the peripheral wall while moving the moving table along the inner surface of the peripheral wall. Thus, the peripheral wall veneer can be lifted to form the peripheral wall of the tank.

In the tank peripheral wall construction apparatus according to the third aspect, when the tank peripheral wall is cylindrical, the tank peripheral wall is easily formed while rotating the movable table via the support mechanism. Can be.

In the apparatus for constructing a tank peripheral wall according to the fourth aspect, the balance between the movable table, the support, and the elevating mechanism can be maintained. In the construction device for a tank peripheral wall according to claim 5, a plurality of scaffolds are provided on the support and the auxiliary support. For this reason, the welding work of the veneer for the peripheral wall can be easily performed using these scaffolds.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a first embodiment of the present invention.

FIG. 2 is a side view of the first embodiment.

FIG. 3 is a top view of the first embodiment.

FIG. 4 is a perspective view of a main part of a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Tank peripheral wall construction apparatus, 12 ... Tank, 13 ... Peripheral wall, 13a ... Peripheral wall veneer, 20 ... Support mechanism, 21 ... Support shaft, 22 ... Support arm, 25 ... Movable table, 37 ... Elevating mechanism, 42 ... Scaffolding, 44 ... Auxiliary moving table as balancer, 45 ... Auxiliary support as balancer

Claims (5)

[Claims] 1. A tank peripheral wall forming method for forming a peripheral wall of a tank by welding and fixing a large number of peripheral wall veneers, wherein a construction apparatus having an elevating mechanism for elevating and lowering the peripheral veneer veneer is provided on a tank. A method for constructing a tank peripheral wall that forms a tank peripheral wall while moving along the inner surface of the peripheral wall from inside the standing position of the peripheral wall. 2. A tank peripheral wall construction apparatus for forming a peripheral wall of a tank by welding and fixing a number of peripheral wall veneers, wherein the apparatus is movable along the inner surface of the peripheral wall from inside the standing position of the tank peripheral wall. An apparatus for constructing a peripheral wall of a tank, comprising: a movable table; a column erected on the movable table; and an elevating mechanism arranged on the column to raise and lower the single plate for the peripheral wall. 3. The tank peripheral wall construction apparatus according to claim 2, further comprising a support mechanism installed inside a standing position of the tank peripheral wall, wherein the movable table rotates along an inner surface of the cylindrical tank peripheral wall. A construction device for a tank peripheral wall that rotatably supports a movable table with respect to a support mechanism so that the movable table can move. 4. The tank peripheral wall construction apparatus according to claim 3, further comprising a balancer for maintaining a balance between the movable table, the support, and the elevating mechanism, wherein the balancer constructs the tank peripheral wall attached to the support mechanism. apparatus. 5. The construction apparatus for a tank peripheral wall according to claim 2, wherein the tank peripheral wall includes a plurality of scaffolds disposed on the support column and the auxiliary column.