JP4843327B2 - Construction method of temporary scaffolding inside a hollow structure - Google Patents

Description

Silos, repair of hollow structure in the portion of such chimney cleaning relates method for temporary scaffolding inside structure of the hollow structure to be used for maintenance work and the like.

Conventionally, the above work has been performed using a gondola. However, the gondola is operated only as a point reached by a worker's hand extending from the gondola and a cleaning tool when moving up and down the inner wall of the structure. The working range can be said to be a set of points where the gondola moves . Workers are working while being restricted by the movement of the gondola. In addition, the gondola work is dangerous and causes a fall accident due to the wire rope slipping or breaking. Higher safety is demanded by both owners and workers.

If it is scaffolds assembled in a single tube prior art method, the construction cost is in the case of hanging hunting, while Gondola respect gondola work, as described above, the bad of the work ability, linings, etc., of the paint moving the brush for recoating toward the inner wall in the coating operation, the line making the first brush does not match the brush lines for recoating, paint curing failure of the recoating portion, peeling The problem is occurring. In other words, since the gondola moves in one vertical line, the line for the lining work also becomes one vertical line, and there is a time difference in the coating, and the coating film deteriorates at the painted part between the lines. ing.

It has been pointed out that a scaffold constructed with a single pipe of a conventional construction method takes a work period for the scaffolding depending on the size of the structure. Reducing the construction period of the silo, which is the production line of the factory, has a great effect on reducing costs as well as improving productivity. In addition, in order to perform more accurate construction than the conventional construction method, work is performed on the inner wall as a surface, rather than work in a single vertical line constrained by raising and lowering the gondola. There is a demand for shortening.

In normal silo, the upper opening, both lower opening, the human is not only there barely pass by opening, to construct the lift normal shall be subject to carry many materials in the silo, according to the over payment There is a problem of increase in cost and extension of construction period, and improvement is demanded. Also, conventional lift installations have safety issues and are currently unusable.
JP-A-10-131479 [Claim 1] [0003] [0007] JP 2000-23440 [Claim 1] [0003] [0005] [0031] [0033]

As described above, in the gondola of the prior art, when carrying out the work along the inner wall of the structure, acts reaction force from the inner wall against the forces encourage for work, the silo or the like, structures such as wind always swinging from side to side effects, gondola reaction force rocking to Lugo handler and the inner wall in a circle around the interlocked engagement sealed wire rope and than the inner wall with the structure in section is in contact with a point. It is necessary to expand the point where the gondola touches to ensure work efficiency and secure scaffolding. Moreover, in the gondola work using a wire rope, the problem of the deviation and breakage of a wire rope has arisen. Produce a safer device with less physical constraints on workers.

In order to solve this problem, by changing the shape of the gondola into a donut shape, it is possible to work on the surface along the inner wall. However, to develop a toroidal gondola, the silo or the like, must open the opening on the vertical line of the gondola. In addition, since the gondola is suspended by a wire rope, in order to move the donut-shaped gondola up and down while maintaining the level, a plurality of wire ropes must be simultaneously wound and fed out at equal intervals. When the gondola forms a polyhedron shape further, more wire rope is required, complicated operations are required.

The scaffolds are assembled in a conventional single pipe, to temporary internal structure, bringing the structure in part from the lower opening of the structure to scaffold body, holding body provided with the scaffold body at the bottom of the structure Since tying to is fixed in one piece, there are some that cannot correspond to the shape of the holding body.

The sizes of the structures are also various, and thus the shape of the holding body is also various . In order to correspond to the scaffold main body according to this, it is necessary to prepare many kinds of scaffold main bodies in advance. As a result, there is a problem of increasing production costs, transportation costs, and storage costs.

Scaffold installed in structures at great effort is dark, dismantled over Tremendous effort within a narrow structure, it would be withdrawn, and lead to increased costs in terms of both installation and withdrawal ing.

On the other hand, gondola, because it suspended the cage with a wire rope, so that the workers in the gondola that it does not fall off from work in the cages, there is a height of the gondola of the cage to a height of almost chest of workers , working range with respect to work in the inner wall is made from the reach of the hand on the workers of the head to the part of the chest. If it is applied below, the brush will be reversed and excessive paint will adhere to the inner wall. When the scaffold is installed so that it is perpendicular to the inner wall of the structure as compared to the worker working on the scaffold, the work area of the worker is from the reach of the hand above the head to the foot and the inner wall. In the work range where attention is paid to the height, the work range is approximately double.

When Hanging scaffolding in word ear rope as gondola, by operating a plurality of wire rope at the same speed, but will keep the scaffolding horizontally, a difficult but Hanawa.

The present invention has been made in view of the above problems, its object is repaired inside the hollow structure, cleaning, utilizing the scaffolding for work such as maintenance. For this purpose, the drive carriage to move in power along the rack rail suspended from the upper opening of the structure, thereby lifting the the locked scaffolding. It is a Riashi field by this thing, and to develop those to ensure the ease of temporary gondola.

Scaffolding of the present invention to achieve the above object, the temporary hollow structure inside the unit.

Scaffolds along rack suspended from the upper opening of the hollow structure for vertically driving carriage developing with structural material in part. The scaffold is installed in a single tube holding mechanism that is locked to the drive carriage, and a single tube scaffolding plate holding material is fitted to the single tube receiving portion, and the scaffolding plate is attached to the single tube scaffolding plate holding material. by locking the can change its shape. By deploying the scaffold I suited to the inner wall, stable and secure scaffolding of work workers, greatly contribute to the reduction of the constraints of the work range of the cage of the gondola.

Function foot field, locks the upper end of the rack rails tower-shaped fixing supporting mechanism provided on the outside top of the hollow structure, vertically rack rails from the upper opening of the structure to a structure within the unit hung, engages the drive carriage to the rack rails, the motor engaged with the transverse beam of the drive carriage is rotated, it is possible to raise and lower the carriage rotates the pinion which meshes with by Lira Kkureru the rotational driving force transducer The single pipe holding mechanism is locked to the carriage, the single pipe is fitted to the single pipe holding mechanism, and the scaffolding plate is locked on the single pipe. Expand the scaffold structure in part, to create a scaffolding that can be moved by the motor.

Without suspending the scaffold by wire rope, the lifting structure of a rack-pinion type for holding the load of the scaffold, thereby lifting the scaffolding. Thus, one of the Iashi field such fully support the wire rope deployed within the structure, it is possible to lift the.

By using the rack rail, the horizontal scaffold can be raised and lowered as it is without operating a plurality of wire ropes.

In the gondola, the maximum number of workers is 2, but up to 5 people can work. As a result, work efficiency can be improved.

As an example, the stability of the gondola and to compare the stability of the scaffolding, the gondola, the support whereas a fixed support mechanism at the top opening, the scaffolding, the upper opening fixed support It is a stopper installed at the tip of the mechanism and single pipe. By using a stopper, a significant improvement can be achieved with respect to left and right swinging.

Stopper, a di Yakki installed in single tube distal end which is held in a single tube holding mechanism, the inner wall of the structure from a single tube was pressed with a jack, to secure the scaffold.

For support of the upper and lower, there is a fixed support mechanism and the stopper, against falling scaffold, a brake to the drive carriage, to ensure a double safety using the block technique having the function of preventing under drop.

From the viewpoint of reduction of load of the rack rails, dare lower rack rails not fixed during the lifting scaffold keeping the swingable state, by applying a constantly pressurized downward, the deflection of the rack rails Preventing and smoothing up and down the drive cart.

The drive carriage and the rack rails fit can Idaku, by providing a backlash, thereby self-aligning. This makes it possible to smoothly lift and lower the drive carriage with a long rack rail.

In a hollow structure, it is assumed that airtightness inside the structure is high and dust such as grains is flying . In order to prevent dust explosions from being triggered by sparks generated by the motor , the motor was provided with an explosion-proof device.

The fixed support mechanism for locking the upper end of the rack rails, set the steel on the outside of the upper opening of the structure was placed in tower-like manner to sandwich the upper opening.

The rack rail is suspended vertically inside the structure while being coupled downward from an upper opening having a fixed support mechanism.

Originally, the rack rail cannot be applied unless the position of the upper opening of the structure is always on the center line of the structure. That is, efforts to stabilize the scaffold by matching the center line of the structure, the center of gravity of the scaffolding.

If the single upper opening is on the top of the structure and is on the center line of the structure, the rack rail can be hung without any problem, but there are two or more upper openings at positions that do not pass through the center line. if that line connecting an upper opening of each through the center line of the structure creation, established a fixed support mechanism to the upper opening of each carries the beam to internals, each both ends of the beams fixed support structure internally locked in mechanism to obtain the center line of the structure creation on the beam passed from internals, locking the rack rail upper with a grid pattern of anchor fitting to the beam, a rack rail vertical by hanging disposed, to place the center of gravity of the scaffolding to the center line of the structure with the rack rails.

As described above, the position of the upper opening, how to find a point to match the center of gravity of the center line and the scaffold structure is located by the method to only rod a beam, this method, more stable foot an installation place, the use of the structure with diverse upper opening is achieved.

A single-pipe scaffolding plate holding member having a single-pipe holding mechanism locked to a drive carriage engaged with a rack rail as a holding body is held by being fitted into a receiving portion of the single-pipe holding mechanism. When the tubes are coupled, they are coupled by a coupling means such as pin coupling. The scaffolding plate holding material single pipe lock the scaffolding board can leg crossing field. By this method, the shape of the scaffold can be changed regardless of the size of the structure.

Single pipes, etc., used for scaffolding shall be developed using the ones that meet the standards after investigating the structure in advance. Structures such as silos and chimneys to be planted have the same standard. The assembly procedure is clarified by securing the members in advance as a kit. As a result, safety is ensured and work efficiency is improved by preventing scattering of members in high-altitude work.

Scaffolding the work is over, dismantled, is easily withdrawn from the lower opening of the structure.

In the case of a structure such as a chimney, the scaffolding is configured such that a single pipe is locked to the outer periphery of the chimney in the shape of a cross and the scaffolding plate is installed so as to cover the chimney upper opening. Provided curb-like hole in the center of the upper opening, installing a fixed support mechanism thereon.

The rack rails engaged with the hanging member using the bearings in a fixed support mechanism, to I Ri Damping rack rails engaged causes the turntable to the fixed support mechanism to rotate the rack rail by a power or manually, single pipe An air gun or the like can be installed at the other end of the single tube held by the holding mechanism to clean the inner wall of the chimney, or to perform an operation such as spraying a deterioration preventing material unattended.

Gore handler, by cage is suspended by the rope, the cage swings some force. Moreover , it can move easily by making it swingable. However, when working, the scaffold of the worker is oscillated, causing problems in terms of both work quality and work efficiency. In particular the structure in the section vertical line becomes long to perform the work to move in a line, and poor curing of the coating film, thereby the problem of a peeling. According to the present invention , a worker can work in a face-to-face manner toward the inner wall. Line work can Rukoto taken vertically and horizontally, by this, the quality of the work, the work efficiency is greatly improved.

This onset Ming, it takes a long time to multiplied only pay, the time of withdrawal and the installation of scaffolding that has led to an increase in the cost can be greatly reduced. The present invention is ease and mobility of temporary gondola, providing a device comprising both functions of scaffolding.

As an example, in the case of a cylindrical grain main bottle silo, as shown in FIG. 1, the rack rail 1b is suspended, and the scaffold 2a is built in a circular shape centering on the rack rail 1b .

In the case of a cross-shaped grain sub-bore silo, as shown in FIG. 2, a cross-shaped scaffold 2b is built on the rack rail 1b on the axis.

Repair of the inner wall of the hollow structure, cleaning, as a scaffold for work performed by humans, such as maintenance, and as the body in the future to attach the non-human machinery, construction, cleaning, repair, be utilized in the fields such as maintenance Can do.

1 is an overall view according to an embodiment. It is a plan installation diagram according to an embodiment of the scaffolding. It is a detailed installation drawing of the fixed locking mechanism of a single rail or a plurality of rails. It is detail drawing of a drive trolley | bogie.

1a roof tower-shaped fixing locking mechanism 1b, 2e, 4a rack rails 1c, 2a scaffolding <br/> 1d safety wire 1e jack-like stopper 1f, 2f drive carriage 1g, 2f, 4c brake 2b for cereal Fukubin silos Cross- shaped scaffolding 2c Scaffolding plate 2d Single tube 3a Roof rack-shaped fixed locking mechanism 3b for single rack rail Roof-shaped fixed locking mechanism 3c for single rack rail Multiple, single rack rail common roof-shaped fixed locking mechanism plane 3d Multiple rack rails 3e Single rack rail 4b Pinion 4d Motor

Claims (1)

When cleaning, repairing and maintaining the inside of a structure with an upper opening such as a silo,
A fixed support mechanism was installed in each of the upper openings where the line connecting the upper openings passes through the center line of the structure among the two or more upper openings that do not pass through the center line, and was carried into the structure. Supporting both ends of the beam inside the structure by each of the fixed support mechanisms,
The rack rail is suspended vertically from the cross-girder-shaped locking tool provided on the center line of the structure obtained on the beam,
Method for temporary scaffold to internals empty structure in deploying the scaffold towards the drive carriage to the inner wall of the structure for vertically on the rack rails.

Images