JPH042310B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating machine for the outer walls of high-rise buildings.

[Prior Art] After the exterior walls of a high-rise building are newly constructed, if they are exposed to wind and rain for a certain number of years, the surface will become dirty and the aesthetic appearance will be significantly impaired, so it is necessary to repaint it at a selected time.

In this case, the work procedure is to erect a scaffold around the outside wall of the building, have workers climb onto the scaffold, repair cracks, etc. on the wall (by press-fitting resin liquid), and then spray high-pressure water onto the surface to wash it. remove moss, dirt),
Scrape off the floating paint with a brush (called keren work) and apply adhesive to the surface (sealer coat)
After that, apply the main coating with paint. Finally, the painted surface is held down with a roller (head presser) and the scaffolding board is removed to complete the work. Needless to say, painting is work at heights and requires extreme caution in terms of safety.

In addition, the initial scaffold assembly is a more dangerous task than the main one, and from an economic perspective, it is said to account for nearly half of the total cost.

It is also a problem that young people are not interested in working in this type of work due to the current trends of the time, as their bodies and clothes get extremely dirty during work.

As a conventional technique that improves the conventional painting method and aims to improve safety and efficiency, there is a "high-place painting device" (Japanese Utility Model Publication No. 57-28765, Fig. 5).

This invention is based on the coating device 24a as shown in FIG.
is mounted on the loading platform 32 so as to be able to move in and out toward the side surface of the structure 1a, and a hanging machine 23a is installed so that the loading platform 32 can be moved up and down along the side surface of the structure 1a.
It has a configuration in which it is mounted on a trolley.

Therefore, cleaning work and painting work can be performed simultaneously using the two upper and lower rollers while moving the painting device 24a up and down without directly accessing the high-placed surface of the structure 1a, improving the safety and work efficiency of painting work. I think you can get it.

Further, in the Japanese Utility Model Application Publication No. 59-162960 shown in Fig. 6, a pulley 13b installed on a wall, a gondola 40 for moving the wall, one end of which is fixed to the gondola, and the other end hanging down by winding the pulley. A wire rope 23b, a pressing body 41 that protrudes from the back side of the gondola to the side opposite to the wall surface and engages with the wire rope 23b to press the gondola toward the wall surface, and a material hopper placed on the ground, a pressure pump, and a pusher body 41 that suspends the gondola. It consists of a carriage 18b equipped with a drive device for lowering the carriage.

In particular, the problem with this idea is that in the past, when gondolas were suspended and workers rode on them to spray paint, the gondolas could move away from the wall due to wind pressure, etc. , a gondola equipped with a blowing ball gun is pressed against the wall so that painting work can be done unmanned.

Further, in Japanese Patent Application Laid-Open No. 60-147269 shown in FIG. 7, there is a fixed frame 51 that is fixed to an elevating arm 50 and moves up and down, a movable frame 52 that can move back and forth on this fixed frame, and a front upper part of this movable frame. The moving frame is equipped with an attached painting booth, a grinding drum, etc., and four telescopic devices each having a copying caster 53 at the tip are attached to the four front corners of the movable frame, and the caster 53 rolls to copy the wall surface. The distance between the paint booth and the moving frame is directly detected to appropriately control the position of the paint booth, and an operator rides on the device and operates the paint booth using the device panel 54.

[Problems to be Solved by the Invention] With the above-mentioned conventional technology, it is possible to perform the washing and main painting automatically without scaffolding when repainting a building. It is not possible to perform press-fitting (after removing the crack to a certain depth if necessary) and finishing by simply moving the coating device A up and down.

Currently, it is difficult to entrust all equipment to machines, and there are still parts that require manual adjustments and finishing.

In addition, the hanging machine 23a shown in Figure 5 has to be a huge structure in order to cover the entire height of a high-rise building, and even though it has wheels and can be moved, the work requires a large amount of space. This is a prerequisite, and during the work there will be major traffic obstacles, such as blocking off adjacent roads.

Furthermore, the biggest problem with the prior art shown in FIG. 6 is that the four wheels 42 are pressed against the wall in order to prevent the gondola suspended from above from swinging (swaying) against the wall. be. For this purpose, a pressing body 41 is provided on the back of the gondola, and a pressing force is applied to the wheels by tensioning the wire by the gondola's own weight via the pulley 13b on the ground and the upper part.

As we all know, painting is not enough simply by spraying paint onto the wall once; in some cases, it may require two or three coats, and the final step is always to finish by applying a roller over the paint film. There is a need.
This layering and roller application will not be effective unless the previous coating has completely dried, but if you use this method, the trajectory of the wheel will dig into the coating surface and create a vertical line. A fatal obstacle arises in that the lines are carved.

In addition, the wall surface of a building is not always a single, smooth surface due to window frames and incidental objects, so determining the position of a paint gun such as a gondola by directly contacting the wall surface is an actual task. There are considerable restrictions on this.

Building walls are usually wide horizontally, so once a certain width has been painted, work can move on to adjacent areas. According to this method, the upper support (pulley 13b) must be moved laterally, and the cart 18b on the ground must also be moved in parallel. If there is a discrepancy in the upper and lower positions, the wire rope 23b will be tensioned diagonally, resulting in an unstable state in which the pressing force against the four wheels is not uniform and biased. However, it is rather rare that the ground directly beneath the walls of high-rise buildings is smooth, and there are various unevenness such as shrubbery, grooves, and flower beds. It is thought that there are restrictions.

Next, in the prior art shown in FIG. 7, the two copying casters 53 on the top and bottom trace the wall surface to detect the position, so the copying casters roll again from the top of the wall after spraying the paint and trace the trajectory. It is thought that it marks on the paint film and leaves vertical streaks. In addition, in this case, a lifting device with a structure similar to a large ground crane is required, and the larger the total height of the high-rise building, the larger the device, and the larger the area it occupies on the ground. As with the previous cited example, there are many concerns that it may be difficult to apply or cause traffic congestion, and it is thought that there are restrictions on its application in areas other than new construction.

In order to solve the above-mentioned problems, the present invention is a device that can be applied consistently after building painting, including ancillary work.Moreover, the structure is relatively small-scale, and the impact of construction work on the surrounding area is minimal. The purpose is to provide a building coating machine that lasts.

[Means for Solving the Problems] The building coating machine according to the present invention has three support rods 11A, 11 that protrude forward from the end surface of the roof of a high-rise building.
An upper trolley 7 on which the wheels B and 11A are movably mounted is placed movably along the side wall 1 of a high-rise building, and the motor 10 on the trolley moves the two guide ropes 14, 14 on the guide drum 9 on both sides. Support rods 11A, 11
A fixed weight 15A and a chain weight 15B beyond the fixed weight 15A are suspended from the lower end so that they can rise and fall freely, by inserting and restraining the hollow opposing side walls of the painting unit 24 from the front through the pulleys 13A and 13A at the tip of A. In the painting cart 18, which is located separately and movably to an appropriate position, a pressure feeding rope 23, which collectively forms a hose and a wire rope that supply desired fluids such as pressurized fluid and paint, is connected via a pulley 13B at the tip of a central support rod 11B. The above problem was solved by suspending the coating unit so that it could be raised and lowered.

Here, the coating unit is specifically equipped with one of an automatic gun for pressurized water or a mixture of pressurized air and paint, a brushing roller, or a presser roller, and is connected to a means for pumping the desired fluid. can achieve the following effects.

[Function] With the above structure, the present invention allows separate mechanisms to move the position of the coating unit and the automatic gun for coating the tip thereof and to prevent lateral vibration. In other words, in order to prevent shaking, a
Connect the two wires 14, 14 using the pulleys 13A, 13A attached to the two support rods on both sides.
A fixed weight 15A and a chain weight 15B are attached to the bottom end of the coating unit by inserting them through both sides thereof. Both weights move up and down as the wire goes up and down, and the chain weight 15
B reaches the ground and crawls on the ground. By winding up and lowering the guide rope, the length of the chain running on the ground and the overall weight of the weight are adjusted, and the tension applied to the guide rope and the frictional resistance between the chain weight running on the ground and the ground are variable. It has the effect of preventing vibrations caused by the effects of paint work and the work of the coating unit.

On the other hand, the wire 23 that suspends the coating unit
is unwound from the painting cart 18 via the center 13B of the support rod, but since the cart and the anti-swinging device are not directly connected, there is the freedom to place the cart anywhere. For example, if it can be transported in an elevator, it can be lifted to the roof of a building and painted without any negative impact on the ground (road).

Distance between painting unit and building wall (projection distance)
The coating unit can be applied to the desired area by adjusting the fluid as appropriate and force-feeding the desired fluid (for example, pressurized water, pressurized air, paint liquid, etc.) to the coating unit in the desired manner (amount, pressure, viscosity, etc.). Start painting work.

The work begins at the top end of the building, and the painting unit is suspended via a pulley at the end of the support rod, and as the work progresses, it descends downward until it reaches the ground.

There are several steps in the building painting procedure, so once the first step is completed upon reaching the ground, the painting tool in the painting unit used for that step is replaced, and the fluid supplied to the tool is changed to the desired level for the second step. I switched to something else, lifted it up again from the top end of the building, and completed the second step while descending downwards.

Next, to describe the function of the related invention, a work gondola is suspended from a pulley, and pressurized water, pressurized air, paint, etc. can be fed to this gondola under pressure, so the gondola can be suspended to the bottom of a building and workers can It is possible to transfer from the ground and carry out replenishment work such as repairing cracks before painting (resin liquid injection), finishing work on the painting unit, and retouching, and then ascend upwards and reach the top where you can perform incidental work before and after painting. can.

[Example] A preferred example of the present invention will be described based on FIGS. 1 to 4.

In FIG. 1, a backing plate 4 is fixed onto a parapet 3 on a roof 2 of a high-rise building 1 with fixing screws 8, and a rail 5 is laid on top of this backing plate 4.

On the other hand, the upper truck 7 is pivoted by rollers 6,
Since the rollers 6 hold the rails 5, the upper carriage 7
can be moved back and forth on the contact plate 4.

The upper truck 7 has three support rods 11A, 11B that can move forward and backward to the left and right (direction perpendicular to the building wall).
11A protrudes in parallel, and a handle 12 is attached to one end of the roof of the building, and pulleys 13A, 13B, and 13A are attached to the other end, so when the handle 12 is turned, the three pulleys move left and right. The distance between the pulley and the high-rise building wall 1 can be adjusted by

A motor 10 for driving a guide drum 9 is built in the upper truck 7, and two guide ropes 14, 14 are suspended from the guide drum via two pulleys 13A, 13A on both sides, and are used for painting as described below. While inserting and restraining both sides of the unit, it further hangs down and before reaching the ground 16, a fixed weight 15A is inserted in the space, and a chain weight 15B is attached as a variable weight to this fixed weight 15A, and it reaches the ground. Make the top crawl.

When the motor 10 is activated, the weights 15A and 15B
moves up and down to change the length of the chain weight 15B on the ground, so the tension applied to the painting unit can be adjusted.

In the method often seen in the prior art, in which the coating unit contacts the side wall of the building to be coated using some member to adjust the position of the coating equipment, streaks on the coating film are unavoidable. An important requirement for building painting is how to stabilize the suspended painting unit without contact and prevent it from shaking. Furthermore, when this effect is sought simply by using a fixed weight, it is not possible to make adjustments before and after the grounding, and therefore it is not possible to effectively prevent rocking.

On the other hand, there is a painting truck 18 on the ground 16 that is moved by casters 17, and on this platform there are a compressor 19, a pump 20, a painting motor 21, a painting drum 22, a water hose 23A, and a paint hose 23.
B. A pressure feeding rope 23 made up of an air hose 23C and a wire rope is wound around another pulley 13B attached to the tip of the support rod 11 to suspend the painting unit.

Therefore, when the coating motor 21 operates, the coating drum 22 rotates, and a desired fluid can be pumped through the pulley 13B while moving the coating unit up and down.

Note that this painting trolley 18 may be placed on the roof of a building if circumstances permit.

To explain the coating unit with reference to FIG. 2, a pressure feeding rope 23 suspends the coating unit 24 via a holding plate 25 and a hanging chain 26.
automatic gun 27 and hood 28 facing building wall 1
is attached.

This automatic gun 27 has a pressure water injection nozzle 27.
A. Pressurized air and paint mixture injection nozzle 27B;
Tools such as the brushing roller 31 and the presser roller 29 can be freely replaced, and can be freely connected to any of the desired fluid hoses 23A, 23B, and 23C to complete the painting process.

3A, B, and C are diagrams showing an example of painting work. A guide rod 34 and a guide plate 35 are attached to both sides of the painting unit 24, and a guide rope 14 is inserted through a circular hole in the guide rod to coat the building wall. It maintains a stable position facing 1.

To explain the outline of this procedure, first, the brushing roller 31 is rotated and pressed against the wall of the building to scrape off paint and debris floating on the surface, and then the cleaning pump 30 is turned to high pressure and sucks water from the inlet. High-pressure water is jetted from an automatic gun 27A (for water) through a water hose 23A, and the wall surface is cleaned by vertical movement, and is further washed with low-pressure water.

The compressor 19 is rotated and the pump 20 is driven to supply adhesive through the hose 23B and pressurized air through the hose 23C to the automatic gun 27B, respectively, and spray the adhesive in a mist form from the nozzle of the gun (sealer coating). ).

In the same way, this device also sprays a mist of paint from the gas nozzle, and finally presses the painted surface with the head presser roller 29 and, if necessary, applies coloring with the automatic gun 27B to complete the application. .

3A and 3B are a plan view and a front view of the presser roller 29. Further, Figure C is a front view of the brushing roller 31 in use.

In addition, in this embodiment, the lowest weight 15
By removing the gondola and replacing it with a working gondola, workers can safely and reliably perform pre-painting crack repairs and post-painting detail finishing and retouching, which cannot be done with automatic painting, by hand.

In addition to repainting the walls of high-rise buildings, we also use a combination of high-pressure water jets and polish rollers (rollers made of felt, etc.) to achieve our goals, not only when we polish walls to remove dirt. You can also do it.

[Effects of the Invention] As described above, the present invention is capable of automatically carrying out most of the painting with relatively simple equipment, without fear of causing traffic obstruction on the road, and while occupying only a small space.

The dangers of constructing scaffolding and continuing all work at heights as in the past have been largely alleviated, and manual work has been reduced to the bare minimum that cannot be supplemented by mechanization.

The working environment for workers has also been greatly improved, and the chances of their bodies and clothes getting dirty have been drastically reduced.

Also, compared to conventional techniques that attempt to mechanize hand-painting, there is no need for any parts to come into contact with the painted surface, so there is no chance of leaving marks such as streaks on the paint film. This is the biggest advantage.

Also, you only need to choose the right location for the painting trolley.
In particular, since it is not restricted by the positional relationship with the painted surface, favorable working conditions can be ensured.

In particular, it can be expected to have effects that clearly surpass conventional technology, such as not causing traffic congestion, not being affected by the topography directly beneath the building, and being superior in terms of safety and health.

If the work specifications of the painting unit are set numerically accurately, subsequent work can proceed automatically and uniformly, so there is no need to rely on the experience or intuition of particularly skilled workers, and unevenness with little individual variation can be achieved. You can expect a finish without any scratches.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention as a whole, FIG. 2 is a front view showing an embodiment of the coating unit, FIGS. 3A and B are a plan view and a front view of the presser roller, and FIG. A front view of the brushing roll, FIG. 4 is a perspective view of the same embodiment, FIG. 5 is a front view of the prior art, FIG. 6 is a perspective view of another prior art, and FIG. 7 is yet another prior art. front view. 1...Wall surface of a high-rise building, 2...Rooftop, 7...Upper truck, 9...Guide drum, 10...Motor, 1
1... Support rod, 13... Pulley, 14... Guide rope, 15A... Fixed weight, 15B... Chain weight,
18... Painting trolley, 23... Pressure feeding rope, 24...
...painting unit.

Claims (1)

[Scope of Claims] 1. An upper truck 7 on which three support rods 11A, 11B, 11A protruding forward from the end surface of the roof of a high-rise building can be moved forward and backward is placed movably along the side wall 1 of the high-rise building. , the motor 10 on the truck connects two guide ropes 14, 14 on the guide drum 9 to pulleys 13A, 13 at the ends of support rods 11A, 11A on both sides.
A weight 1 is inserted into the side wall of the hollow opposing painting unit 24 from the front through A and fixed at the lower end.
5A and the chain weight 15B beyond it are suspended so as to be able to rise and fall freely, and a painting trolley 18, which is located separately and can be moved to an appropriate position, is equipped with hoses and wire ropes for supplying desired fluids such as pressure fluid and paint, respectively. The pressure feeding rope 23 formed together is the central support rod 11B.
A building coating machine characterized in that a coating unit is suspended via a pulley 13B at the tip so that it can be raised and lowered. 2. The building coating machine according to claim 1, wherein the coating unit is selectively equipped with any one of an automatic gun for pressurized water or a mixture of pressurized air and paint, brushing, or a press roller. 3. An upper trolley 7 on which three support rods 11A, 11B, and 11A protruding forward from the end surface of the roof of a high-rise building can be moved forward and backward is placed movably along the side wall 1 of the high-rise building, and the motor 10 on the trolley The two guide ropes 14, 14 on the guide drum 9 are connected to the pulleys 13A, 13 at the ends of the support rods 11A, 11A on both sides.
A gondola is suspended from the lower end of the painting unit 24, which is hollow and faces the side wall from the front, and is suspended from the side wall A, and is movable up and down. A building painting system characterized in that a pressure feeding rope 23, which is made up of a hose and a wire rope that respectively supply desired fluids such as paint, suspends a painting unit so as to be able to rise and fall via a pulley 13B at the tip of a central support rod 11B. Machine.