JPH0529100Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for repainting the outer surface of a column of a bridge over a river, strait, etc., for example.

[Prior art and its issues] Conventionally, repainting of this type of tower pillar has involved building scaffolding along the tower pillar, manually blasting, cleaning, and cleaning the painted surface.
They were spray painting. Providing scaffolding in this way not only increases equipment costs, but also has many disadvantages, such as the need to ensure the safety of workers as they work at heights.

The purpose of the present invention was to solve the problems of the conventional technology by simple yet rational means, and to raise the tower pillar like an inchworm with two movable frames. The aim is to provide a device that can be repainted continuously.

[Means for Solving the Problems] The structure of the present invention that solves the problems of the prior art is to move two movable frames that can be raised separately along the walls of the tower pillars, each having a rectangular cross-sectional shape, up and down. The two movable frames are connected by a driving cylinder mechanism such as hydraulic pressure controlled externally, and the four corners of the two movable frames are fixed to the wall surface of the tower column. A fixing means is provided which is capable of being separated and capable of raising both movable frames like an inchworm by external operation of the drive cylinder mechanism, and which is externally controlled; Equipped with a repainting unit that has blasting equipment, cleaning equipment, and painting equipment that operate when the movable frame is in a stopped position.
In addition, a rope for preventing falling is connected to one of the movable frames.

[Example] The details of the embodiments will be explained with reference to the drawings.

FIG. 1 is a perspective view showing an example of a tower column using the device of the present invention, FIG. 2 is a perspective view of the device, and FIG. 3 is a partially cutaway perspective view of a repainting unit.

Reference numeral 1 in FIG. 1 indicates a tower pillar having a rectangular cross-sectional shape. Further, in the figure, 12 is a stiffening girder of the bridge, and 13 is a cross beam of the bridge.

Reference numeral 21 designates an upper movable frame having suction legs 22 at its four corners that are made of vacuum-structured suction cups or excitation magnet structures that can be suctioned to the wall surface of the tower column 1 by external control. Similarly, 23 is a lower movable frame having externally controlled suction cups or suction legs 24 made of an excitation magnet structure at the four corners, and both the upper and lower movable frames 21 and 23 have multiple externally controlled suction legs 24. It is connected by a hydraulic cylinder 25 in the vertical position of the book and an externally controlled diagonal hydraulic cylinder 26. In addition, both the hydraulic cylinders 25 and 26
Both ends of the movable frames 21 and 23 are pivotably connected to the movable frames 21 and 23, respectively, and the movable frames 21 and 23 are configured to be able to move up and down and move in the left and right directions, respectively.

A repainting unit B is fixed inside the lower movable frame 23. This repainting unit B is configured to be driven by support equipment 27 mounted on the movable frame 23. Further, a rope 28 for preventing falling is connected to the lower movable frame 23.

Next, the structure of the repainting unit B will be explained with reference to FIG.

In the upper part of the casing 15, there is provided a blast equipment 17 having a plurality of blast nozzles 16 for spraying blast onto the wall surface of the tower column 1 and removing old paint film, and in the lower part of this blast equipment 17, Cleaning equipment 18 is provided for blasting and vacuum suction for recovering the release coating. Further, in the lower part of this cleaning equipment 18, a plurality of painting nozzles 1 are installed.
A painting equipment 20 having 9 is provided. The repainting unit B is constructed as described above.
The blasting equipment 17, the cleaning equipment 18, and the painting equipment 20 are all driven and stopped by the support equipment.

[Description of operation] The operation will be explained based on the configuration of the embodiment described above.

In this embodiment, the wall surface of the tower pillar 1 is painted in a straight line from the bottom to the top with a predetermined width.
In the state shown in FIG. 2, the restraint of the suction legs 22 attached to the upper movable frame 21 against the wall surface of the tower column 1 is completely released by external control action, and the upper movable frame 21 is moved to a predetermined position by the externally controlled hydraulic cylinder 25. After the stroke is raised, the movable frame 21 is fixed to the column 1 by the external control action of the suction legs 22.
Next, the restraint of the suction legs 24 on the wall surface of the tower column 1 of the lower movable frame 23 is completely released by external control action, and the coating is applied while being pulled upward by the external control action of the hydraulic cylinder 25. The blasting equipment 17 and cleaning equipment 18 of the replacement unit B perform the removal work of the old paint film and the painting work of the column 1 wall from which the paint film has been removed, and the hydraulic cylinder 25 is fully retracted and the lower part is removed. After fixing the upper movable frame 23 to the wall surface of the tower column 1 by the external control action of the suction legs 24, the upper movable frame 21
The tower is raised and fixed, and the above-mentioned operation is repeated to repaint all the way to the top of the column.

After this work is completed, the entire repainting device can be lowered to the lower end of the column 1 in the reverse manner to the above, or the entire device can be lowered to the bottom of the column 1 using the cable 28.
lower to the bottom of the Then, after setting the repainting unit B on the untreated wall surface, the repainting work is repeated in the manner described above. In addition, in order to move the entire repainting device horizontally, one of the movable frames must be released from the wall, and the released movable frame can be moved to the right or left by externally controlling the hydraulic cylinder 26 in an oblique position. move it to By alternately moving both movable frames 21 and 23 in this manner, the stiffening girder 12 and the cross beam 13 can be avoided.

[Effects of the Invention] As described above, according to the configuration of the present invention, the following effects can be obtained.

(a) The inchworm-like upward movement of the device is performed smoothly by external control, and the column walls can be repainted reliably, and the device can be made smaller and lighter.

(b) Columns are generally equipped with stiffening girders and cross beams, but the equipment can be avoided by manipulating the cables, and fine-grained repainting up to the top of the column can be done efficiently.

(c) The device is equipped with a rope to prevent it from falling, so it can be used in case of an accident where the device falls off.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a tower column using the device of the present invention, FIG. 2 is a perspective view of the device, and FIG. 3 is a partially cutaway perspective view of a repainting unit. 1... Tower pillar, B... Repaint unit, 15...
Casing, 17... Blasting equipment, 18... Cleaning equipment, 20... Painting equipment, 21... Upper movable frame, 23... Lower movable frame, 24... Suction leg, 2
5, 26... Hydraulic cylinder, 27... Support equipment,
28... cable.

Claims (1)

[Scope of utility model registration request] Two movable frames that can be raised individually along the walls of the tower pillars, which have a rectangular cross-sectional shape, are arranged in combination above and below, and both movable frames are connected to a drive cylinder mechanism such as an externally controlled hydraulic pressure. On the other hand, the four corners of both movable frames can be fixed to and separated from the wall surface of the column, and both movable frames can be raised like an inchworm by external operation of the drive cylinder mechanism. and externally controlled fixing means, and further, a repainting unit having blasting equipment, cleaning equipment, and painting equipment that operates when both movable frames are in a stopped position is mounted on one of the movable frames. Also, a tower pillar repainting device characterized in that a rope for preventing falling is connected to one of the movable frames.