JPH0428429B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a coating device for coating steel structures such as high-rise chimneys.

Traditionally, steel structures such as high-rise chimneys were
On-site painting is carried out once in a while for maintenance purposes, but since all of this is dependent on human labor, maintenance costs are high. Also, since it was done manually, it was not possible to increase the painting speed very much. Also, working at heights poses great danger. Furthermore, the number of special workers who perform this type of work is decreasing, making it difficult to plan work.

The present invention addresses the above-mentioned problems, and includes a circular traveling device, a self-propelled trolley that runs on the circular traveling device, and a circular traveling device that is held movably up and down at intervals around an object to be painted. It is equipped with a holding device, an elevating drive device for raising and lowering the annular traveling device, and a painting device installed on the self-propelled truck, and the painting device can be raised and lowered on the self-propelled truck. an elevating table provided on the elevating table, a revolving table provided on the elevating table so as to be able to rotate in the horizontal direction, a positioning table provided on the same revolving table so as to be movable back and forth, and the object to be coated directed onto the same positioning table. This painting device is characterized by comprising a working head that is movable in the radial direction, and its purpose is to reduce maintenance costs for steel structures such as high-rise chimneys. can. Another object of the present invention is to provide an improved coating device that allows cleaning and coating operations to be carried out as planned and without danger.

Next, the coating apparatus of the present invention will be explained with reference to an embodiment shown in Figs. 1 to 7. 1 in Figs. It is installed on a split-type annular traveling device 2 that supports the object 3 so as to be movable in the circumferential direction. Three or more shaking and collision prevention devices 10 are installed inside the annular traveling device 2, so that the annular traveling device 2 can move the target object 3 by the collision prevention device 10.
It is held so as not to collide with the In addition, a plurality of hanging ropes 4 for raising and lowering the annular traveling device 2 are connected to a hanging rope winding device (Fig. (not shown), and by winding or unwinding the hanging rope 4 by this hanging rope winding device, the annular traveling device 2 can be raised or lowered to change its height position. can. This instruction is given by an operator using an operation panel (not shown) installed on the ground, and at this time, the drive device of the winding device is driven. On a stage 8 such as an inspection walkway provided for the object to be painted 3, there is provided an abrasive and coating material supply device 7 that supplies the abrasive material necessary for cleaning and the coating material necessary for painting. , a plurality of cables and hoses 9 including power lines for the coating device 1 and the annular traveling device 2 supply materials, electricity, air, etc. necessary for cleaning and painting. Next, the present coating device 1 will be explained in detail with reference to FIGS. 3 and 4. Reference numeral 11 is a polishing head, and the polishing head 11 has a cleaning nozzle 12 for discharging the abrasive material and a cleaning nozzle 12 for discharging the abrasive material, and a cleaning head 12 for discharging the abrasive material. A distance sensor 47 that detects the distance between the cleaning nozzle 12 for preventing the cleaning, a nozzle cover 13 surrounding it, and the object to be painted 3, an arm 14 that supports the nozzle cover 13, and a cylinder 15 for swinging the nozzle cover 13. It is made up of. The polishing head 11 moves back and forth on the guide rail 17 in the X direction by driving the head movement motor 16 and rotating the ball screw 18, so that the polishing nozzle 12 is moved back and forth in the X direction on the object to be painted 3. Facing each other at intervals. The painting head 19 also includes a distance sensor 48 and a nozzle for detecting the distance between a painting nozzle 20 for discharging a coating material, a nozzle cover 21 for preventing the coating material from scattering, and the object 3 to be painted. Arm 2 supporting cover 21
2 and a cylinder 23 for swinging the nozzle cover 21. Also, the same painting head 19
The guide rail 2 is moved by driving the head moving motor 24 and rotating the ball screw 23.
6 in the X direction, and the coating nozzle 20 is made to face the object 3 to be coated at a predetermined distance.

The positioning table 27 on which the above-mentioned grinding head 11 and painting head 19 are mounted moves on the guide rail 29 in the Y direction by driving the head positioning motor 28 and rotating the ball screw 30. Sweeping head 11 or painting head 19
is positioned relative to the object 3 to be painted. Also the third
Reference numeral 33 in the figure indicates a head rotating table. By driving the head rotating motor 31 and rotating the gears 32 and 32', the head rotating table 33 rotates to move the head 11 (or 19) onto the object to be painted 3. You can escape more. Reference numeral 34 denotes a lift table, which drives the head lift motor 35 and rotates a screw jack 38 provided on a traveling carriage 39, thereby moving the entire heads 11 and 19 to Z.
move up and down in the direction. Reference numeral 37 denotes a guide member when moving up and down. The traveling of the traveling truck 39 is controlled by the rotation of the traveling motor 40 via a speed reducer 41 and a pinion 42.
As a result, the traveling carriage 39 moves along the rack 43 provided on the annular traveling device 2. In order to assist the traveling of the traveling trolley 39 and prevent it from overturning, an instruction/traveling roller 44 serves as a guide member 49 of the circular traveling path.
comes into contact with from the top, bottom, left and right. Reference numeral 45 denotes a portion on the traveling truck side of the cables and hoses 9 that supply the materials, electricity, air, etc. necessary for cleaning and painting to the coating apparatus 1, and 46 monitors the cleaning and painting conditions and the movement of the mechanical equipment. This is a TV camera for.

Next, the operation of the coating device will be explained. When the annular traveling device 2 carrying the coating device 1 is lifted above the object 3 to be coated, it drives the head lifting motor 35 and screws the screw jacks 38 and 36.
The heads 11, 19 are raised to the upper limit position of the lifting stroke. Next, the head positioning motor 28 is driven to move the head moving table 25 onto the guide rail 29 via the ball screw 30 to align the center of the polishing head 11 with the center of the object to be painted 3, and then the polishing nozzle In order to make the polishing head 12 face the object 3 to be painted at a constant distance, the head moving motor 16 is driven, and the polishing head 11 is advanced via the ball screw 18 and the guide rail 17.
Position detection is performed by a distance sensor 47 provided on the cleaning cover 13, and when a predetermined distance L is reached, the head moving motor 16 is stopped to complete positioning. If the object to be painted 3 is oblique as shown in FIG. 5, the cover swinging cylinder 15 and the head moving motor 16 are used to detect distance sensors 47 provided above and below the abrasive cover 13 as shown in FIG. All of them should be spaced at a predetermined distance L. Further, when the polishing head 11 is opposed to the object 3 to be painted at a predetermined distance L, the traveling motor 40 is driven, the pinion 42 is rotated via the reducer 41, and the pinion 42 is driven in a circular manner. While moving the device 2 along the rack 43, the roller 44 provided at the bottom of the traveling carriage 39 is moved along the guide member 49 of the annular traveling device 2.
The traveling trolley 39 is moved along the object 3 to be painted.
run around. Simultaneously with the start of travel of the traveling trolley 39, the abrasive supply device 7 is activated, and the abrasive material is sprayed onto the surface of the object 3 to be coated via the cables/hoses 9 and 45 and the abrasive nozzle 12. The outer peripheral surface of object 3 is automatically polished. Traveling trolley 3
9 travels (360°+α) on the annular traveling device 2, the driving of the traveling cart 39 and the operation of the abrasive material supplying device 7 are stopped, the head lifting motor 35 is driven, and the screw jack 38 is moved through the screw 36. The head lifting table 34 is lowered by a certain stroke (sweeping width + β). When the head elevating table 34 has descended by a certain stroke, the abrasive supply device 7 is started again, and the drive motor 40 of the traveling cart 39 is driven in the reverse direction to make the traveling cart 39 travel in the opposite direction to perform automatic cleaning. . The purpose of traveling in the opposite direction here is to prevent the cables and hoses 45 from becoming entangled with the object 3 to be painted. TV attached to the traveling trolley 39 during the above-mentioned cleaning work
When the camera 46 finds a protrusion (for example, a ladder, etc.) 50 on the object 3 to be painted, the polishing operation is stopped before the protrusion 50 and the polishing head 11 is moved back ( (see Fig. 7), then drives the head rotation motor 31 and gears 32, 32'.
The head turning table 33 is rotated through the head (see Fig. 7), and then the traveling carriage 39 is moved to a position beyond the protrusion 50 while the head is turned (see Fig. 7).
After the grinding head 11 is rotated in the working direction, the grinding head 11 is repositioned with respect to the object 3 to be coated, and the grinding work is resumed (see FIG. 7).

As described above, the surface of the object to be painted 3 is automatically polished by repeatedly turning the abrasive material on and off, moving the traveling cart 39 forward and backward, and intermittent lowering of the polishing head lifting table 34. However, when the downward stroke of the head lifting table 34 is eliminated by repeating the same cleaning operation, the ground-mounted hanging rope winding device is driven to move the entire annular traveling device 2 through a constant stroke (the entire stroke of the head lifting table 34). equivalent amount) and at the same time lower the head lifting table 3.
4 to the upper limit of the stroke and perform the next cleaning.The above operation is repeated to automatically polish the entire surface of the object 3 to be painted, and when the polishing work is completed, the circular The traveling device 2 is lifted to the coating start position, and the positioning motor 28
Switch the polishing head 11 to the painting head 19,
Perform automatic painting. The painting procedure is the same as the cleaning process, so it will be omitted.

As described above, the coating device of the present invention includes a circular traveling device, a self-propelled trolley that runs on the circular traveling device, and a holding device that holds the circular traveling device so that it can be raised and lowered at intervals around the object to be painted. , comprising a lifting drive device for raising and lowering the annular traveling device, and a painting device installed on the self-propelled truck, and the painting device was installed on the self-propelled truck so that it can be moved up and down. An elevating table, a revolving table provided on the elevating table so as to be able to rotate horizontally, a positioning table provided on the same revolving table so as to be movable back and forth, and a radius oriented toward the object to be painted on the same positioning table. Since the cleaning and painting work is automatically performed by using a working head that is movable in different directions, maintenance costs for steel structures such as high-rise chimneys can be reduced. It also has the effect of allowing cleaning and painting work to be carried out as planned and without danger.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a side view schematically showing an embodiment of a coating apparatus according to the present invention, FIG. 2 is a plan view taken along the arrow line in FIG. 1, and FIG. 4
The figure is a front view, Figures 5 and 6 are explanatory diagrams of the operation of the head for spraying abrasive material, and Figure 7 shows the protrusions provided on the object to be painted by the head for spraying abrasive material and the head for painting material. FIG. 2...Annular traveling device, 3...Object to be painted, 4...
... Lifting drive device, 11, 19... Working head,
27...Positioning table, 33...Turning table, 34...Elevating table, 39...Self-propelled cart.

Claims (1)

[Claims] 1. An annular traveling device, a self-propelled trolley that runs on the annular traveling device, and a holding device that holds the annular traveling device so that it can be raised and lowered at intervals around the object to be painted;
It is equipped with an elevating drive device for elevating and lowering the annular traveling device, and a painting device installed on the self-propelled truck, and the painting device is installed on the self-propelled truck so that it can be raised and lowered. A rotating table provided on the same lifting table so as to be able to rotate in the horizontal direction, a positioning table provided on the same rotating table so as to be able to move forward and backward, and a radial direction directed toward the object to be painted on the same positioning table. 1. A painting device characterized by comprising a working head that can be moved to and from the painting device.