JPH0949333A - Field assembly device for tank roof reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability and safety by gripping a reinforcement by opening and closing a claw of a reinforcement gripping device, turning, raising up-bringing down and raising-lowering the reinforcement gripping device by making a laterally traveling carriage laterally travel, and performing bar arrangement by opening the claw after the reinforcement is positioned. SOLUTION: A base machine 1 is made to travel, and a girder 2 is moved, and a laterally traveling carriage is made to travel to the base machine 1 side, and a claw is opened, and a central part of a reinforcement in a cartridge is held, and the claw is closed, and the reinforcement is gripped. Next, the laterally traveling carriage is made to laterally travel, and a reinforcement gripping device is turned, raised up- brought down and raised-lowered, and the reinforcement is positioned in a prescribed position, and the claw is opened, and the reinforcement is arranged in the prescribed position. Then, similar operation is repeated, and the reinforcement is assembled. When an obstacle exists on a domed roof B, the girder 2 is raised up and brought down by a raising-up and bringing-down wire 5, and interference is avoided. These works are all performed by operation of an operator in an operation room 7. Therefore, a construction work period can be shortened, and this can cope with a blast or the like by clamping the tip of the girder 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank roof reinforcing bar on-site assembly apparatus used for constructing a dome-shaped tank roof with reinforced concrete.

[0002]

2. Description of the Related Art Conventionally, the roof of a large tank is often made of steel even if the bottom plate and side walls are made of concrete. However, recently, reinforced concrete roofs have begun to appear due to their ease of maintenance. Further, the roof shape is often a dome shape due to its structure for supporting its own weight, drainage, and the like.

Since it is very difficult to support the weight of the roof of this large tank, it is difficult to mount a machine or the like on the roof. Therefore, the reinforcing bar assembly work at the site must be done manually one by one. There is.

[0004]

In the dome-shaped roof, the outermost peripheral portion where the roof is connected to the side wall has a cross section with a considerable slope, which is dangerous to workers. In addition, there is a load limit on the lower formwork of the roof (the lower formwork of reinforced concrete, which is the support plate of the installed reinforcing bar).

It is an object of the present invention to provide a tank roof rebar field assembly apparatus which improves safety and workability.

[0006]

According to the present invention, a self-propelled base machine arranged on the outer peripheral portion of a dome-shaped roof, and an undulation protruding from the base machine along a sectional curve of the dome-shaped roof. The garter comprises a free garter and a handling device that can traverse along the lower surface of the garter. The handling device includes a traverse carriage, a telescopic mast extending vertically from the traverse carriage, and a lower end of the telescopic mast. And a reinforcing bar gripping device equipped with a clamp device at both ends of an arm which is supported by and is swung by a swivel device.

In the tank roof rebar on-site assembly apparatus configured as described above, the rebar gripping device grips the rebar and the traverse carriage is traversed. After positioning, open the claws and arrange the reinforcing bars.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, an annular traveling base C is provided on the outer periphery of the dome-shaped roof B of the large tank A. On the traveling base C, the base machine 1
Are arranged so that they can drive around.

On the side of the tank A of the base machine 1, an arc-shaped garter 2 conforming to the cross-sectional shape of the dome-shaped roof B is pivotally attached by a pin 3 and is undulated by expansion and contraction of an undulating wire 5 guided by a mast 4. The counterweight 6 is provided at the other end of the base machine 1. Then, along the lower surface of the garter 2, the entire reference numeral 10
The handling device indicated by is provided so as to be traversable.
Reference numeral 7 in the drawing is a driver's cab. Further, the base machine 1 is provided with a small reinforcing rod carrying cartridge (not shown) for temporarily placing the reinforcing bar.

3 and 4, the transverse carriage 11 of the handling device 10 is supported by the lower beams 2a, 2a of the garter 2 by a pair of front and rear rollers 12 that sandwich the lower beam 2a of the garter 2 from above and below, The vehicle is traversed by a traveling device (not shown).

A telescopic mast 13 is hung from the central portion of the transverse carriage 11, and an undulating cylinder 14 is interposed between the upper portion of the mast 13 and the transverse carriage 11.
At the lower end of the telescopic mast 13, a rebar gripping device, generally designated by 20, is rotatably supported by a turning device 15.

Referring also to FIGS. 5 and 6, the reinforcing bar gripping device 2
Reference numeral 0 denotes an arm 21 supported on the lower end of the mast 13 and a clamp device 23 generally standing at both ends of the arm 21 with a space D (for example, about 2 m).

The clamp device 23 has bell crank-shaped pawls 24 and 24 pivotally mounted on a pair of pin portions 22 projecting from the end surface of the arm 21, and a link 25 whose one end is pivotally mounted to the pawl 24. A cylinder 26 in which the other ends of the links 25, 25 are pivotally attached to the operating end 27, and a bracket 28 for supporting the upper end of the cylinder 26 on the arm 21. When the cylinder 26 is contracted, the pawls 24, 24 are opened via the links 25, 25 as shown by the chain line, and when the cylinder 26 is extended, the pawls 24, 24 are closed as shown by the solid line. There is.

Next, a mode of assembling the reinforcing bar will be described.

First, the base machine 1 is run and the garter 2 is run.
To a position including a predetermined position, the traverse carriage 11 is traversed toward the base machine 1 side, the pawls 24 and 24 are opened, and the central portion of the rebar E housed in the cartridge is held, and then the pawls 24 and 24 are Close and grasp the rebar E. Next, the traverse carriage 11 is traversed and the reinforcing bar gripping device 20 is swung, raised and lowered, and moved up and down to position the reinforcing bar E at a predetermined position. So nail 2
After opening 4 and 24 to arrange the reinforcing bar E at a predetermined position, the same operation as described above is repeated to assemble the reinforcing bar E. When there is an obstacle on the dome-shaped roof B, the garter 2 is undulated by the undulating wire 5 to avoid interference. All of the above work is performed by the operator in the cab 7.

[0017]

Since the present invention is configured as described above, it is possible to improve safety and workability, shorten the construction period, and reduce construction costs.

Further, it is possible to install a plurality of units, is easy to divert, is easy to install and dismantle, is lighter than a conventional parent-child crane, and is a garter tip clamped to prevent storms. It's easy.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view showing a handling device.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view showing a reinforcing bar gripping device.

6 is a side view of FIG.

[Explanation of symbols]

 A ... Large tank B ... Dome roof C ... Traveling base D ... Interval E ... Reinforcing bar 1 ... Base machine 2 ... Garter 3 ... Pin 4 ... Mast 5 ... undulating wire 6 ... counterweight 7 ... driver's cab 10 ... handling device 11 ... traverse trolley 12 ... roller 13 ... telescopic mast 14 ... undulating cylinder 15 ... -Swivel device 20 ... Reinforcing bar gripping device 21 ... Arm 22 ... Pin part 23 ... Clamping device 24 ... Claw 25 ... Link 26 ... Cylinder 27 ... Operating end 28. ··bracket

Claims (1)

[Claims] 1. A self-propelled base machine arranged on an outer peripheral portion of a dome-shaped roof, and a garter which is erected from the base machine along a sectional curve of the dome-shaped roof and which can be undulated.
A handling device that can traverse along the lower surface of the garter, and the handling device includes a traverse carriage, a telescopic mast extending vertically from the traverse carriage, and a turning device supported at the lower end of the telescopic mast. A tank roof rebar on-site assembly apparatus, characterized in that a rebar gripping device equipped with a clamp device is provided at both ends of an arm swiveled by.