JP2022101047A - Ceiling surface grinding method using vehicle for grinding ceiling surface - Google Patents

Abstract

To provide a ceiling surface grinding method using a vehicle for grinding a ceiling surface, capable of promptly and efficiently grinding a grinding location on a ceiling surface.SOLUTION: A ceiling grinding method includes the following steps for: driving a high place working vehicle 40 to a location of grinding; lifting a working deck 41 at the location of grinding for bringing a ceiling surface grinding unit 10 close to a ceiling surface; adjusting an inclination of the ceiling surface grinding unit 10 by controlling driving of a lifting jack 15 while making a non-contact measurement of a distance from the ceiling surface 50, so that a traveling surface of a dry-type grinder 30 would be parallel with the ceiling surface 50; lifting the ceiling surface grinding unit 10 until the contact sensor 17 comes in contact with the ceiling surface 50, by driving the lifting jack 15 installed on the four sides simultaneously and while maintaining the parallel state with the ceiling surface 50; and grinding the ceiling surface 50 by moving the dry-type grinder 30 on a mobile rail 18 while pressing a cutting disc 36a against the ceiling surface 50.SELECTED DRAWING: Figure 1

Description

The present invention relates to a ceiling surface cleaning method using a ceiling surface cleaning vehicle, and in particular, a ceiling configured by mounting a ceiling surface cleaning unit equipped with a dry type sweeper on a work deck that can be raised and lowered of an aerial work platform. Regarding the ceiling surface cleaning method using a surface cleaning vehicle.

For example, on the Metropolitan Expressway and other roads, many box culvert-type road tunnels have been constructed as concrete structures, many of which have been in service for more than 30 years. For this reason, various repair works including prevention of peeling of concrete pieces are being carried out on the ceiling surface of a concrete structure such as an old road tunnel.

On the other hand, when performing surface treatment work (base adjustment work) as repair work on the wall surface of a concrete structure, it is generally done by cleaning the surface of the concrete using a cleaning device using a water jet. Although it is a target (see, for example, Patent Document 1 and Patent Document 2), a surface cleaning device using these water jets generates a large amount of water, so that it is applied to the downward ceiling surface of the concrete structure. On the other hand, it is difficult to construct. For this reason, a ceiling surface cleaning device and a cleaning method have been developed that enable efficient cleaning of the ceiling surface of a box culvert type road tunnel using a known dry type cleaning device. (See, for example, Patent Document 3 and Patent Document 4).

Japanese Unexamined Patent Publication No. 2000-141354 Japanese Unexamined Patent Publication No. 2005-254156 Japanese Unexamined Patent Publication No. 2017-40103 Japanese Unexamined Patent Publication No. 2017-40104

However, in the ceiling surface cleaning device and the cleaning method described in Patent Document 3 and Patent Document 4, the height of the guide strut portion for guiding the elevating and lowering of the elevating frame mounted on the transport vehicle is limited by the Road Traffic Act. Therefore, the height of the applicable ceiling surface is restricted, and it is necessary to adjust the loading platform of the transport vehicle to be horizontal or substantially horizontal by the outrigger part, which makes it difficult to install the outrigger part. It is difficult to use at the work site.

For this reason, in Japanese Patent Application No. 2020-215265 filed on the same day, the applicant of the present application uses a dry sweeping device to construct a concrete structure even when the downward ceiling surface for cleaning work is at a considerable height. Disclosed is a vehicle for cleaning the ceiling surface, which can efficiently clean the ceiling surface of the concrete and can perform the cleaning work without adjusting the loading platform of the vehicle to be horizontal or substantially horizontal.

On the other hand, the ceiling surface cleaning vehicle described in Japanese Patent Application No. 2020-215265 is configured by mounting a ceiling surface cleaning unit equipped with a dry type cleaning machine on a work deck that can be raised and lowered of an aerial work platform. Therefore, in order to enable efficient cleaning of the ceiling surface, the cutting disk of the drywall sweeper was promptly stabilized along the ceiling surface to be cleaned at the cleaning point of the ceiling surface. It is necessary to be able to move while making contact in the state.

In the present invention, the cutting disk of the dry sweeper of the ceiling surface cleaning unit mounted on the work deck that can be raised and lowered of the aerial work platform can be quickly cleaned at the ceiling surface to be cleaned. It is an object of the present invention to provide a ceiling surface cleaning method using a ceiling surface cleaning vehicle that can efficiently perform ceiling surface cleaning work by making it possible to move the ceiling surface while making contact with it in a stable state. And.

The present invention is a ceiling surface cleaning method using a ceiling surface cleaning vehicle configured by mounting a ceiling surface cleaning unit equipped with a dry sweeper on a work deck that can be raised and lowered of a high-altitude work vehicle. The ceiling surface cleaning unit includes a base frame portion, the dry sweeper, a moving rail portion provided on the upper surface of the base frame portion to move the dry sweeper, the base frame portion, and the work. An elevating jack installed on all four sides of the base frame, intervening between the deck, and a distance sensor arranged on all four sides of the base frame to measure the distance to the ceiling surface in a non-contact manner. It is arranged on both sides of the dry sweeper and is configured to include at least two contact sensors that detect contact with the ceiling surface, and the height of the work deck is not raised. The process of moving the ceiling surface cleaning vehicle to the ceiling surface cleaning point by driving the work vehicle, and the ceiling surface cleaning unit by raising the work deck at the moved ceiling surface cleaning point. By controlling the drive of the elevating jack while measuring the distance to the ceiling surface in a non-contact manner by the step of arranging the above-mentioned close to the ceiling surface and the distance sensor, the dry sweeper by the moving rail portion. After adjusting the tilt of the ceiling surface cleaning unit so that the running surface is arranged parallel to the ceiling surface and the tilt of the ceiling surface cleaning unit, the elevating jacks installed in all directions are driven at the same time. Then, while maintaining the state in which the traveling surface of the dry sweeper is arranged parallel to the ceiling surface, the step of raising the ceiling surface cleaning unit until the contact sensor comes into contact with the ceiling surface, and then, after that, This includes a step of cleaning the ceiling surface at the cleaning point by moving the dry cleaning machine along the moving rail portion while the cutting disk of the dry cleaning machine is pressed against the ceiling surface. The above object has been achieved by providing a method for cleaning the ceiling surface using a vehicle for cleaning the ceiling surface.

Then, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present invention, the ceiling surface cleaning unit is provided so that the traveling surface of the dry type sweeper by the moving rail portion is arranged in parallel with the ceiling surface. In the process of adjusting the inclination, the expansion and contraction of the two elevating jacks provided on one side is controlled, and the traveling surface in the direction parallel to the direction in which the two elevating jacks are lined up is the ceiling in the same direction. After adjusting so that it is arranged parallel to the surface, the expansion and contraction of the two elevating jacks provided on one side arranged in the direction perpendicular to the direction in which the two elevating jacks provided on one side are arranged. It is preferable to control so that the traveling surface in the direction perpendicular to the direction in which these two elevating jacks are lined up is arranged parallel to the ceiling surface in the same direction.

Further, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present invention, the contact sensor comes into contact with the ceiling surface while maintaining the state in which the traveling surface of the drywall sweeper is arranged parallel to the ceiling surface. In the step of raising the ceiling surface cleaning unit, it is preferable that when at least one of the contact sensors comes into contact with the ceiling surface, the drive of all the elevating jacks is automatically stopped at the same time.

Further, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present invention, the aerial work platform is provided with roller jacks provided in the four corner regions of the loading platform portion thereof, and the dry type polishing vehicle is provided. By moving the sweeper along the moving rail portion, after the step of sweeping the ceiling surface at the cleaning point, the running surface of the dry sweeper remains arranged parallel to the ceiling surface. With the roller portions at the lower ends of the four roller jacks in contact with the road surface, the ceiling surface cleaning unit installed on the work deck is operated at a low speed to the next adjacent cleaning location. It is preferable to include a step of moving to the next cleaning point.

According to the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present invention, the ceiling surface cleaning unit mounted on the work deck where the aerial work platform can be raised and lowered quickly at the ceiling surface cleaning location. The cutting disk of the dry sweeper can be moved along the ceiling surface to be cleaned while being in contact with the ceiling surface in a stable state, so that the ceiling surface can be efficiently cleaned.

It is a side view explaining the ceiling surface cleaning vehicle which carries out the ceiling surface cleaning method which concerns on one preferred embodiment of this invention. It is a side view of the ceiling surface cleaning unit constituting the ceiling surface cleaning vehicle. It is a top view of the ceiling surface cleaning unit constituting the ceiling surface cleaning vehicle. It is a front view of the ceiling surface cleaning unit constituting the ceiling surface cleaning vehicle. (A) is a side view, (b) is a rear view, and (d) is a plan view of the dry type sweeper.

The ceiling surface cleaning method according to a preferred embodiment of the present invention is a method for cleaning the ceiling surface 50 by the ceiling surface cleaning vehicle shown in FIG. 1, and is used as a ceiling surface of a concrete structure, for example, from the start of service. The downward ceiling surface 50 of a box calvert type road tunnel that has been old for more than 30 years is configured by mounting the ceiling surface cleaning unit 10 on the work deck 41 that can be raised and lowered of the high-altitude work vehicle 40. It is used as a method for cleaning by the dry type sweeper 30 of the ceiling surface cleaning vehicle 1. In the ceiling surface cleaning method of the present embodiment, the ceiling surface cleaning vehicle 1 performs the cleaning work by mounting the dry type cleaning machine 30 on the work deck 41 of the known high-altitude work vehicle 40. Even when the downward ceiling surface 50 is at a considerable height position, it has a function to efficiently clean the downward ceiling surface of a box calvert type road tunnel which is a concrete structure. .. Further, in the ceiling surface cleaning method of the present embodiment, the cutting disk 36a of the drywall sweeper 30 can be moved along the ceiling surface 50 to be cleaned in a stable state while being in contact with each other, so that the ceiling surface can be efficiently moved. It has a function to enable the cleaning work of.

In the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present embodiment, the ceiling surface cleaning unit 10 equipped with the drywall cleaning machine 30 is mounted on the work deck 41 that can be raised and lowered of the high-altitude work vehicle 40. It is a method of cleaning the ceiling surface by a vehicle for cleaning the ceiling surface, and the ceiling surface cleaning unit 10 is provided on the base frame portion 11, the dry type sweeper 30, and the upper surface portion of the base frame portion 11. An elevating jack 15 installed on all sides of the base frame portion 11 and a base frame portion are interposed between the moving rail portion 18 provided to move the dry sweeper 30, the base frame portion 11, and the work deck 41. A distance sensor 16 is arranged on all sides of 11 to measure the distance to the ceiling surface 50 in a non-contact manner, and is arranged on both sides of the drywall sweeper 30 to detect contact with the ceiling surface 50. It is configured to include at least two contact sensors 17. The ceiling surface cleaning method is a step of driving the high-altitude work vehicle 40 without raising the work deck 41 and moving the ceiling surface cleaning vehicle 1 to the cleaning point of the ceiling surface 50. At the cleaning point of the ceiling surface 50, the process of raising the work deck 41 and arranging the ceiling surface cleaning unit 10 close to the ceiling surface, and the distance sensor 16 measures the distance to the ceiling surface 50 in a non-contact manner. While controlling the drive of the elevating jack 15, the step of adjusting the inclination of the ceiling surface cleaning unit 10 so that the traveling surface of the dry cleaning machine 30 by the moving rail portion 18 is arranged in parallel with the ceiling surface 50. After adjusting the tilt of the ceiling surface cleaning unit 10, the elevating jacks 15 installed on all sides are driven at the same time, and the running surface of the dry type cleaning machine 30 is maintained in a state of being arranged parallel to the ceiling surface 50. The step of raising the ceiling surface cleaning unit 10 until the contact sensor 17 comes into contact with the ceiling surface 50, and after that, the dry cleaning machine 30 is pressed against the ceiling surface 50 with the cutting disk 36a of the dry cleaning machine 30 pressed against the ceiling surface 50. Includes a step of cleaning the ceiling surface 50 at the cleaning location by moving the ceiling surface 50 along the moving rail portion 18.

In the present embodiment, the box culvert type road tunnel in which the ceiling surface 50 is cleaned by the ceiling surface cleaning unit 10 is formed by a known construction method using, for example, cast-in-place concrete or precast concrete, for example, height. It is a tunnel having a hollow rectangular cross-sectional shape having a size of about 5.0 to 7.0 m and a width of about 10.0 to 20.0 m. In a box culvert type road tunnel, if the road surface 51 (see FIG. 1) formed at the bottom of a hollow rectangular cross-sectional shape has a longitudinal gradient, the ceiling surface 50 is also similar or abbreviated. The ceiling surface 50 is constructed in a state of being inclined in the extending direction of the tunnel so as to have a similar longitudinal gradient. In the box culvert type road tunnel, when the road surface 51 formed at the bottom of the hollow rectangular cross-sectional shape has a cross slope, the ceiling surface 50 does not slope at the same cross slope, and is preferable. It is constructed in a state where the ceiling surface 50 is formed horizontally or substantially horizontally in the transverse direction.

Further, in the present embodiment, the aerial work platform 40 in which the ceiling surface cleaning unit 10 is installed on the work deck 41 has, for example, a work deck 41 that can be raised and lowered by a known lifting mechanism 42, as shown in FIG. It is a work vehicle provided in the truck bed portion 43, and the flat work floor of the work deck 41 can be used as a scaffold for workers to perform various aerial work. Further, by installing various devices and devices using the flat work floor of the work deck 41 as a support stand, for example, by operating with a remote controller (not shown) from the ground, work at a high place by these devices and devices can be performed. Can be done. In the present embodiment, the work deck 41 can be raised and lowered from the loading platform portion 43 of the aerial work platform 40 to a height of preferably about 0 to 3.4 m, for example, by operation by a remote controller from the ground. For example, the ceiling surface cleaning unit 10 installed on the work deck 41 efficiently cleans the ceiling surface 50 located at a considerable height of about 4.0 to 7.5 m from the road surface 51. You can do it.

In addition to the ceiling surface cleaning unit 10, a control panel, an air device, a generator, a dust collector, a compressor, and the like can be loaded on the work deck 41 of the aerial work platform 40. If all of these devices and equipment cannot be loaded onto the work deck 41 of the aerial work platform 40, for example, an auxiliary transport vehicle (not shown) by a 2t truck may be used, for example, a generator, a dust collector, or the like. With the compressor and the like loaded, the equipment is transported to the cleaning point on the ceiling surface 50, and at the cleaning point on the ceiling surface 50, these devices and the ceiling surface cleaning unit 10 are connected to, for example, a one-touch joint, a cam lock, a connector, or the like. The ceiling surface 50 can be cleaned by connecting using a known connection means.

In the present embodiment, the base frame portion 11 constituting the ceiling surface cleaning unit 10 is formed into a three-dimensional frame shape by assembling, for example, channel steel, angle steel, or the like, and is formed in a high-altitude work vehicle 40. As a size that can be accommodated in the work deck 41, it has a rectangular planar shape having a width of 1750 mm in the left-right direction Y and a length of about 3000 mm in the front-back direction X (see FIG. 3). The base frame portion 11 extends in the short side direction (horizontal direction Y) on both side portions in the long side direction (front-back direction X) in the rectangular frame-shaped upper frame portion 12 constituting the base frame portion 11. Moving rails described later on the upper end surface of the pair of side channel steels 12a attached and the upper end surface of the intermediate channel steel 12b provided in the intermediate portion of the pair of side channel steels 12a, respectively. The left-right direction rail members 18a constituting the portion 18 are laid in a state of extending in parallel with each other.

As shown in FIG. 3, the moving rail portion 18 provided on the upper surface portion of the upper frame portion 12 of the base frame portion 11 is a left-right direction rail member that moves the dry sweeper 30 in the left-right direction (short side direction) Y. It includes 18a and a front-rear direction rail member 18b for moving the dry-type sweeper 30 in the front-rear direction (long side direction) X. As described above, the left-right direction rail member 18a is laid on the upper end surfaces of the pair of side channel steels 12a and the intermediate channel steels 12b attached to the upper frame portion 12 forming the base frame portion 11. The upper frame portion 12 is provided in three rows extending parallel to the short side direction Y. On the left-right direction rail member 18a, a transverse frame portion 46 on which the front-rear direction rail member 18b is laid is placed so as to be movable in the left-right direction Y.

The transverse frame portion 46 is formed by assembling, for example, channel steel or angle steel, for example, the width in the left-right direction Y is about 600 mm, and the length in the front-rear direction X is slightly longer than the length of the base frame portion 11, for example. It has a rectangular plane shape that is vertically long in the front-rear direction X and has a size of about 3200 mm. Front-rear direction rail members 18b are laid on the upper end surfaces of the long-side grooved steel 46a arranged on the pair of left and right long-side portions forming the transverse frame portion 46. A drywall sweeper 30 is mounted on the front-rear direction rail member 18b so as to be movable in the front-rear direction X. A pair of surfaces including the upper end surfaces defined by the upper end surfaces of the front-rear rail members 18b form a running surface of the drywall sweeper 30.

Further, the traversing frame portion 46 includes traveling wheels 46b for moving the traversing frame portion 46 along the left-right direction rail member 18a laid on the upper surface portion of the upper frame portion 12 of the base frame portion 11. A traveling drive device 46c (see FIG. 4) is attached. In the present embodiment, the moving rail portion 18 includes a horizontal frame portion 46, a traveling wheel 46b, a traveling drive device 46c, and the like, in addition to the left-right direction rail member 18a and the front-rear direction rail member 18b.

The dry sweeper 30 provided so as to be movable in the long side direction (front-back direction X) and the short side direction (horizontal direction Y) of the upper frame portion 12 of the base frame portion 11 by the moving rail portion 18 is shown in FIG. As shown in a) to (c), the intermediate plate portion 33 arranged above the traveling base portion 31 with the load cell 32 interposed between the traveling base portion 31 and the traveling base portion 31. A sweeper mounting plate 35 arranged above the intermediate plate portion 33 with an air cylinder 34 interposed between the intermediate plate portion 33, and a sweeper supported and mounted by the sweeper mounting plate 35. It is configured to include the main body 36. Guide shafts 37 are provided vertically above the four corners of the traveling base portion 31, and these guide shafts 37 are provided at the four corners of the sweeper mounting plate 35. By mounting each of the linear bushes 38, the guide shafts 37 and the linear bushes 38 are guided to raise and lower the sweeper mounting plate 35 in a stable state as the air cylinder 34 expands and contracts. You can do it. The air cylinder 34 can press the cutting disc 36a of the sweeper main body 36 against the ceiling surface 50.

The grinder main body 36 can be used by appropriately improving various known grinders capable of sweeping a concrete floor surface or the like to form a flat working surface. As such a grinder, for example, the trade name "new tornado" (manufactured by CRT Co., Ltd.) can be preferably used. The sweeper main body 36 includes a cutting disk 36a, a suction dust collector 36b, a drive motor 36c, and the like. Further, a shatterproof member (not shown) made of a flexible spatula member, a brush-like member, or the like is provided so as to surround the cutting disk 36a. This effectively prevents dust generated when grinding by pressing against the ceiling surface 50 of the box culvert type road tunnel with the cutting disk 36a facing upward to leak out of the sweeper main body 36. It becomes possible to avoid it. A discharge pipe 49 is provided in connection with the sweeper main body 36 (see FIGS. 1 and 2).

On the traveling base portion 31 of the dry type sweeper 30, the dry type sweeper 30 is traveled and moved along the front-rear direction rail member 18b laid on the upper end surface of the long side channel steel 46a of the transverse frame portion 46. Therefore, a traveling wheel 31a and a traveling drive device 31b are attached. As a result, the drywall sweeper 30 can travel and move in the long side direction X of the upper frame portion 12 along the front-rear direction rail member 18b laid on the upper surface portion of the traverse frame portion 46. By moving the traversing frame portion 46 along the left-right direction rail member 18a laid on the upper surface portion of the upper frame portion 12 of the base frame portion 11, the traversing frame portion 46 can also be moved in the short side direction Y of the base frame portion 11. It has become.

The air cylinder 34, which is vertically arranged between the intermediate plate portion 33 of the dry sweeper 30 and the sweeper mounting plate 35, is attached to the front portion and the rear portion of the sweeper mounting plate 35, respectively. The pressing force of the sweeper main body 36 against the ceiling surface of the road tunnel, which is measured by the load cell 32 interposed between the traveling base portion 31 and the intermediate plate portion 33, is, for example, 0.3 to 0. The cutting disk 36a of the sweeper main body 36 can be pressed against the ceiling surface 50 in a state where the sweeper mounting plate 35 is raised and lowered so as to be 9 Mpa. By using an air cylinder 34 as a cylinder member for raising and lowering the sweeper mounting plate 35, it is possible to follow the unevenness of, for example, about ± 40 mm existing on the ceiling surface 50 of the road tunnel and absorb these unevenness. It will be possible.

In the present embodiment, the ceiling surface cleaning unit 10 is installed between the base frame portion 11 and the work deck 41 of the aerial work platform 40, which is a support stand, on all four sides of the base frame portion 11. The elevating jack 15 and the distance sensor 16 arranged on all sides of the base frame portion 11 to measure the distance to the ceiling surface 50 in a non-contact manner, and the drywall sweeper 30 are arranged on both sides of the ceiling. It is provided with at least two contact sensors 17 for detecting contact with the surface 50.

The elevating jack 15 is a rectangular frame-shaped lower frame portion 13 that is integrally assembled so as to form a three-dimensional frame shape via the upper frame portion 12 of the base frame portion 11 and the connecting frame portion 14 of the truss structure. It is attached to the four corner portions in a state of being joined to the lower frame portion 13 and the connecting frame portion 14 by bolt joining or welding joining. The lower frame portion 13 is formed so that the length in the long side direction X is shorter than that of the upper frame portion 12. As a result, the elevating jacks 15 are provided at four locations in the four corner regions of the base frame portion 11 in a state where they can be expanded and contracted in the vertical direction.

As each elevating jack 15, for example, a screw jack can be preferably used in the present embodiment. The elevating jack 15 can be expanded and contracted, for example, by a driving force of a driving motor (not shown), preferably by an operation from a remote controller. The elevating jack 15 is attached in a state where the drive main body portion 15a to which the drive motor is connected is joined to the lower frame portion 13 and the connecting frame portion 14 and the telescopic portion 15b (see FIG. 4) is extended in the vertical direction. ing. Further, an installation board portion 15c is attached to the lower end portion of the telescopic portion 15b of the elevating jack 15. By placing these four installation board portions 15c in close contact with the work floor of the aerial work platform 40 by placing them in close contact with each other, the ceiling surface cleaning unit 10 can be placed on the work deck of the aerial work platform 40. It can be installed in the 41 in a stable state. By expanding and contracting each of the elevating jacks 15 arranged in the four corner regions, the traveling surface by the moving rail portion 18 attached to the base frame portion 11 and the upper frame portion 12 on the upper surface portion thereof can be moved up and down. The inclination of the running surface can be easily adjusted so that the traveling surface is arranged in parallel or substantially parallel to the ceiling surface 50 to be cleaned up or down.

In the present embodiment, the distance sensor 16 arranged on four sides of the base frame portion 11 and measuring the distance to the ceiling surface 50 in a non-contact manner, for example, emits a reflected wave when an electromagnetic wave is radiated toward the ceiling surface 50. By detecting it, it is a known non-contact type sensor capable of detecting the distance from the ceiling surface 50 of the road tunnel. In the present embodiment, the distance sensor 16 is provided at the base end portion of the erection rod 48 erected from the tip end portion of the overhanging support plate 47, which is provided so as to project from the four corner portions of the base frame portion 11 in the front-rear direction X. It is attached to four places so as to project from the base end portion (see FIGS. 2 and 3).

In the present embodiment, the contact sensors 17 arranged on both sides of the drywall sweeper 30 and detecting contact with the ceiling surface 50 have a non-contact distance sensor 16 attached to the base end portion. By attaching to the tip of the erection rod 48, which stands up from the above-mentioned overhanging support plate 47 provided at the four corners of the base frame portion 11, it is preferable that the base frame portion sandwiches the dry sweeper 30. At least two locations are provided at four locations at the end portions on both sides in the long side direction of 11. The contact sensor 17 is arranged at a position higher than the cutting disk 36a of the sweeper main body 36 of the drywall sweeper 30, for example, at a position about 5 cm higher than the cutting disk 36a. When the contact sensor 17 comes into contact with the ceiling surface 50, the elevating jack 15 can stop the ascent of the sweeper main body 36 and the cutting disk 36a.

The contact sensor 17 is a known sensor including, for example, a sensor body provided in a state of being urged upward by a spring member, a limit switch, a switch adjuster, and the like, and the sensor body is preferably a spring member. By being pushed against the urging force of the ceiling surface 50, contact with the ceiling surface 50 can be detected.

In order to clean the ceiling surface 50 of the box culvert type road tunnel by using the ceiling surface cleaning vehicle 1 of the present embodiment having the above configuration, the work deck 41 of the aerial work platform 40 is raised. In the absence state, the ceiling surface cleaning unit 10 is loaded on the work deck 41 and moved to the cleaning point on the ceiling surface 50. Since the aerial work platform 40 can travel on the road in the same manner as a general vehicle, the ceiling surface cleaning unit 10 can be speedily moved to the cleaning point of the ceiling surface 50 in the road tunnel.

At the cleaning point of the ceiling surface 50 of the box culvert type road tunnel, auxiliary equipment such as a generator, a dust collector, a compressor, etc. loaded on the following auxiliary transport vehicle as needed, and the ceiling surface cleaning unit 10 are used. Are connected using, for example, a one-touch joint, a cam lock, a connector, or other connecting means. After that, the ceiling surface 50 is cleaned as follows by using a remote controller such as a pendant switch connected to a control panel (not shown) provided in the aerial work platform 40, for example. Will be.

That is, in the cleaning method of cleaning the downward ceiling surface 50 of the box culvert type road tunnel which is a concrete structure by using the ceiling surface cleaning vehicle 1 of the present embodiment, as shown in FIG. The ceiling surface cleaning vehicle 1 in which the ceiling surface cleaning unit 10 is loaded on the work deck 41 of the high-altitude work vehicle 40 is moved to the cleaning point on the ceiling surface 50. After that, by extending the four roller jacks 44 provided in the four corner regions of the loading platform portion 43 of the aerial work platform 40, the roller portions 44a at the lower end thereof are brought into contact with the road surface 51. Then, the aerial work platform 40 on which the work deck 41 is provided so as to be able to move up and down and the loading platform portion 43 thereof are installed in the work place in a stable state. In the ceiling surface cleaning vehicle 1 of the present embodiment, it is not necessary to adjust the loading platform portion 43 of the installed aerial work platform 40 to be horizontal or substantially horizontal.

Next, by operating the remote controller and preferably looking at the monitor screen provided on the control panel, the aerial work platform 40 can be checked for the distance from the ceiling surface 50 detected by each distance sensor 16. By driving and controlling the elevating mechanism 42, the work deck 41 on which the ceiling surface cleaning unit 10 is installed is separated from the ceiling surface 50 of the cutting disk 36a of the cleaning machine main body 36 of the drywall cleaning machine 30, for example, 170. The ceiling surface cleaning unit 10 is arranged close to the ceiling surface 50 by raising the ceiling surface to about 200 mm. In the present embodiment, the ceiling surface 50 is arranged at a considerably high position of about 4.0 to 7.5 m from the road surface 51, but the work deck 41 is driven and controlled by the elevating mechanism 42 of the aerial work platform 40. By raising the ceiling surface cleaning unit 10, the ceiling surface cleaning unit 10 can be brought close to the ceiling surface 50 and smoothly arranged.

Here, the loading platform portion 43 of the aerial work platform 40 is arranged, for example, on the slope of the road surface 51, and is not necessarily arranged horizontally. Therefore, in the present embodiment, the elevating mechanism 42 is driven. It is necessary to adjust the raised work deck 41 and the traveling surface of the sweeper main body 36 by the moving rail portion 18 of the ceiling surface cleaning unit 10 mounted therein so as to be arranged in parallel with the ceiling surface 50. ..

To adjust the traveling surface of the sweeper main body 36 in the ceiling surface cleaning unit 10 mounted on the work deck 41 so as to be arranged parallel to the ceiling surface 50, for example, first, the short side of the base frame portion 11 The short side direction perpendicular to the axial direction of the tunnel is preferable while controlling the expansion and contraction of the two elevating jacks 15 provided on one side in the direction Y and checking the distance from the ceiling surface 50 by the distance sensor 16. In Y, the traveling surface of the sweeper main body 36 and the ceiling surface 50 are adjusted so as to be arranged in parallel.

After that, for example, it is preferable to control the expansion and contraction of the two elevating jacks 15 provided on one side in the long side direction X of the base frame portion 11 and confirm the distance to the ceiling surface 50 by the distance sensor 16. Adjusts so that the traveling surface of the sweeper main body 36 and the ceiling surface 50 are arranged in parallel in the long side direction X along the axial direction of the tunnel. These make it possible to arrange the entire traveling surface parallel to or substantially parallel to the ceiling surface 50.

When the entire traveling surface is arranged parallel to or substantially parallel to the ceiling surface 50, for example, the elevating jacks 15 arranged in the four corner regions of the base frame portion 11 are controlled to be extended at the same time to control the traveling surface. The base frame portion 11 and the sweeper main body attached to the base frame portion 11 until the contact sensor 17 detects contact with the ceiling surface 50 while maintaining the state in which the entire surface is arranged parallel to or substantially parallel to the ceiling surface 50. Raise 36.

By simultaneously extending the four elevating jacks 15, the base frame portion 11 and the sweeper main body 36 are raised, and when the contact sensor 17 detects contact with the ceiling surface 50, the base frame portion 11 and the sweeper By controlling the rise of the main body 36 automatically by the remote controller, the automatically stopped base frame portion 11 is preferably the cutting disk 36a of the sweeper main body 36 of the dry sweeper 30. The entire running surface is parallel to or substantially parallel to the ceiling surface 50 so that the sweeper main body 36 can move vertically and horizontally while maintaining a predetermined gap of about 5 cm between the ceiling surface 50 and the ceiling surface 50. It becomes possible to arrange so as to be.

In this way, the traveling surface of the moving rail portion 18 is parallel to or parallel to the ceiling surface 50 while maintaining a predetermined gap of about 5 cm between the cutting disk 36a of the sweeper main body 36 and the ceiling surface 50. After arranging them so as to be substantially parallel to each other, for example, with the drywall cleaner 30 installed at the start position on the traveling surface, the cutting disk 36a of the cleaner body 36 is rotationally driven by the drive motor 36c, and is driven by the air cylinder 34. For example, with a pressing force of 0.3 to 0.9 Mpa, a shatterproof member (not shown) by a spatula member, a brush-like member, or the like around the cutting disk 36a is pressed against the ceiling surface 50 together with the cutting disk 36a.

When the cutting disk 36a is rotated and pressed against the ceiling surface 50 together with the anti-scattering member around it, for example, a dry type is used along the front-rear direction rail member 18b laid in the traversing frame portion 46 while maintaining this state. The sweeper 30 is automatically driven from the start position of one end of the long side direction X toward the other end. Since the front-rear rail member 18b is preferably provided with limit switches at both ends thereof, when the drywall sweeper 30 travels on the front-rear rail member 18b to reach the other end, Running stops automatically.

When the drywall sweeper 30 automatically stops at the other end of the front-rear rail member 18b, the traversing frame portion 46 is moved along the left-right rail member 18a, for example, about 200 to 300 mm in the short side direction Y. Stop it. After that, in the same manner as described above, the drywall sweeper 30 is automatically driven from the other end portion in the long side direction X toward one end portion along the front-rear direction rail member 18b of the traversing frame portion 46. In this way, while rotating the cutting disk 36a, the drywall sweeper 30 travels and stops in the long side direction along the front-rear direction rail member 18b, and runs along the left-right direction rail member 18a of the traversing frame portion 46. By repeating the traveling movement and the stop in the short side direction Y, it becomes possible to efficiently clean the entire ceiling surface 50 at the cleaning point where the aerial work platform 40 is installed.

Therefore, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present embodiment, the high-altitude work vehicle 40 is operated with the work deck 41 not raised, and the ceiling surface cleaning vehicle 1 is mounted on the ceiling surface. The process of moving to the cleaning point of 50, the process of raising the work deck 41 and arranging the ceiling surface cleaning unit 10 close to the ceiling surface at the cleaned point of the moved ceiling surface 50, and the distance sensor 16. By controlling the drive of the elevating jack 15 while measuring the distance to the ceiling surface 50 in a non-contact manner, the traveling surface of the dry sweeper 30 by the moving rail portion 18 is arranged parallel to the ceiling surface 50. After adjusting the tilt of the ceiling surface cleaning unit 10 and the tilt of the ceiling surface cleaning unit 10, the elevating jacks 15 installed on all sides are simultaneously driven to raise the running surface of the dry cleaning unit 30 to the ceiling. The process of raising the ceiling surface cleaning unit 10 until the contact sensor 17 comes into contact with the ceiling surface 50 while maintaining the state of being arranged parallel to the surface 50, and then the cutting disk 36a of the dry cleaning machine 30 is placed on the ceiling. By moving the dry sweeper 30 along the moving rail portion 18 in a state of being pressed against the surface 50, it is configured to include a step of cleaning the ceiling surface 50 at the cleaning point. ..

Further, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present embodiment, the ceiling surface cleaning unit is arranged so that the traveling surface of the dry type sweeper 30 by the moving rail portion 18 is arranged in parallel with the ceiling surface 50. In the step of adjusting the inclination of 10, preferably, the expansion and contraction of the two elevating jacks 15 provided on one side in the short side direction Y is controlled, and the direction in which the two elevating jacks 15 are arranged side by side (long side direction). After adjusting so that the traveling surface in the direction perpendicular to X) (short side direction Y) is arranged parallel to the ceiling surface in the same direction, the length is the direction in which the two elevating jacks 15 are lined up. The traveling surface in the long side direction X, which is the direction perpendicular to the direction in which the two elevating jacks 15 provided on one side in the side direction X are lined up (short side direction Y), is the ceiling surface in the same direction. It is designed to be arranged in parallel with.

Further, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present embodiment, the contact sensor 17 keeps the state where the running surface of the drywall sweeper 30 is arranged parallel to the ceiling surface 50, and the contact sensor 17 is attached to the ceiling surface 50. In the process of raising the ceiling surface cleaning unit 10 until it comes into contact with the ceiling surface, when at least one contact sensor 17 comes into contact with the ceiling surface, the drive of all the elevating jacks 15 is controlled to be automatically stopped at the same time. ing.

When the entire ceiling surface 50 at the cleaning location where the aerial work platform 40 is installed has been cleaned, the elevating jacks 15 arranged at the four corner regions of the base frame portion 11 are simultaneously contracted. Controlled, preferably, the drywall sweeper 30 is lowered together with the base frame portion 11 by, for example, about 10 cm while maintaining a state in which the traveling surface of the moving rail portion 18 is parallel to or substantially parallel to the ceiling surface 50. When the drywall sweeper 30 is lowered together with the base frame portion 11 to separate the scattering prevention member of the cutting disk 36a from the ceiling surface 50, it is preferably provided in the four corner regions of the loading platform portion 43 of the aerial work platform 40. The roller portions 44a at the lower ends of the four roller jacks 44 are brought into contact with the road surface 51, and the aerial work platform 40 and the loading platform portion 43 thereof are maintained in a stable state for aerial work. The vehicle 40 is driven at a low speed to move the ceiling surface cleaning unit 10 installed on the work deck 41, which is a support stand, to the next cleaning point adjacent to the cleaning point.

That is, in the ceiling surface cleaning method using the ceiling surface cleaning vehicle of the present embodiment, the aerial work platform 40 is provided with a roller jack 44 provided in the four corner regions of the loading platform portion 43 thereof. By moving the drywall sweeper 30 along the moving rail portion 18, the running surface of the drywall sweeper 30 is arranged parallel to the ceiling surface 50 after the step of sweeping the ceiling surface 50 at the cleaning point. With the roller portions 44a at the lower ends of the four roller jacks 44 in contact with the road surface 51, the work deck 41 is driven to the next cleaning location adjacent to the ground at a low speed. It includes a step of moving the installed ceiling surface cleaning unit 10 to the next cleaning location.

After moving the ceiling surface cleaning unit 10 to the next cleaning location, the same steps as described above are repeated at the next cleaning location to clean the entire ceiling surface 50 at the next cleaning location.

Further, when the ceiling surface cleaning unit 10 is moved and the ceiling surface 50 is repeatedly cleaned at the moved cleaning location, for example, when the cleaning of the ceiling surface 50 at the entire construction site of the cleaning work is completed. Preferably, the elevating jacks 15 arranged in the four corner regions of the base frame portion 11 are fully contracted to lower the ceiling surface cleaning unit 10 and the dry cleaning machine 30 is placed in the central portion of the traveling surface. By moving and fixing it, and further driving and controlling the elevating mechanism 42 of the aerial work platform 40, the work deck 41 on which the ceiling surface cleaning unit 10 is installed is lowered to the storage position in the loading platform 43, thereby lowering the ceiling. The aerial work platform 40 equipped with the surface cleaning unit 10 can be brought into a state where it can be moved to another construction site.

Therefore, according to the ceiling surface cleaning method using the ceiling surface cleaning vehicle 1 of the present embodiment, the ceiling surface cleaning unit 10 includes a base frame portion 11 in which the moving rail portion 18 is provided on the upper surface portion and a base frame. Intervening between the portion 11 and the work deck 41, the elevating jacks 15 installed on the four sides of the base frame portion 11 are arranged on the four sides of the base frame portion 11 so that the distance between the ceiling surface 50 and the ceiling surface 50 is non-contact. It is configured to include a distance sensor 16 to be measured in the above, and at least two contact sensors 17 arranged on both sides of the drywall sweeper 30 to detect contact with the ceiling surface 50. The cleaning unit 10 is supported by the work deck 41 and is installed below the ceiling surface 50 in close proximity to the ceiling surface 50. It will be equipped with a function that allows it to be arranged in parallel or substantially parallel at intervals. As a result, the cutting disk of the dry-type sweeper of the ceiling surface cleaning unit mounted on the work deck that can be raised and lowered of the aerial work platform can be quickly transferred to the ceiling surface to be cleaned at the cleaning point of the ceiling surface. It is possible to move the ceiling surface while making contact with it in a stable state along the line, and it is possible to efficiently clean the ceiling surface. Further, since the work deck 41 on which the ceiling surface cleaning unit 10 is installed is raised by driving and controlling the elevating mechanism 42 of the aerial work platform 40, the downward ceiling surface 50 for performing the cleaning work is considerably high. Even when it is in the position, the cutting disk 36a of the dry type sweeper 30 can be easily reached to clean the ceiling surface 50.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the concrete structure whose ceiling surface is cleaned by the ceiling surface cleaning method of the present invention does not necessarily have to be a box calvert type road tunnel, and the concrete girder of a concrete bridge is used as a concrete structure. The bottom surface can be cleaned by the ceiling surface cleaning method of the present invention as the ceiling surface to be cleaned. In addition, of the four distance sensors arranged on the four sides of the base frame, three distance sensors can be used to control the ascent and descent by the elevating jack so that the distance to the ceiling surface is the same. can.

1 Ceiling surface cleaning vehicle 10 Ceiling surface cleaning unit 11 Base frame part 12 Upper frame part 12a Side part channel steel 12b Intermediate part channel steel 13 Lower frame part 14 Connecting frame part 15 Elevating jack 15a Drive body part 15b Expansion and contraction Part 15c Installation board part 16 Distance sensor 17 Contact sensor 18 Moving rail part 18a Left-right direction rail member 18b Front-rear direction rail member 30 Dry-type sweeper 31 Traveling base 31a Traveling wheel 31b Traveling drive 32 Road cell 33 Intermediate plate 34 Air Cylinder 35 Cleaner mounting plate 36 Cleaner body 36a Cutting disk 36b Suction dust collector 36c Drive motor 40 Aerial work platform 41 Work deck (support stand)
42 Lifting mechanism 43 Loading platform part 44 Roller jack 44a Roller part 46 Traverse frame part 46a Long side grooved steel 46b Traveling wheel 46c Traveling drive 47 Overhanging support plate 48 Standing rod 50 Ceiling surface 51 Road surface X Long side direction ( Longitudinal direction)
Y Short side direction (horizontal direction)

Claims (4)

It is a ceiling surface cleaning method using a ceiling surface cleaning vehicle that is configured by mounting a ceiling surface cleaning unit equipped with a drywall sweeper on the work deck that can be raised and lowered on aerial work platforms.
The ceiling surface cleaning unit includes a base frame portion, a dry type sweeper, a moving rail portion provided on the upper surface portion of the base frame portion to move the dry type sweeper, the base frame portion, and the above. An elevating jack installed on all four sides of the base frame and a distance sensor arranged on all four sides of the base frame to measure the distance to the ceiling surface in a non-contact manner, intervening between the work deck and the work deck. , Which is arranged on both sides of the drywall sweeper and includes at least two contact sensors for detecting contact with the ceiling surface.
The process of driving the aerial work platform with the work deck not raised and moving the vehicle for cleaning the ceiling surface to the cleaning point on the ceiling surface.
At the moved ceiling surface cleaning point, the process of raising the work deck and arranging the ceiling surface cleaning unit close to the ceiling surface, and the distance sensor measures the distance to the ceiling surface in a non-contact manner. While controlling the drive of the elevating jack, the step of adjusting the inclination of the ceiling surface cleaning unit so that the traveling surface of the dry cleaning machine by the moving rail portion is arranged parallel to the ceiling surface. After adjusting the tilt of the ceiling surface cleaning unit, the elevating jacks installed on all sides are simultaneously driven to maintain the state in which the running surface of the dry type cleaning machine is arranged parallel to the ceiling surface, and the contact is made. The process of raising the ceiling surface cleaning unit until the sensor comes into contact with the ceiling surface, and then, with the cutting disk of the dry cleaning machine pressed against the ceiling surface, the dry cleaning machine is attached to the moving rail portion. A method of cleaning the ceiling surface using a vehicle for cleaning the ceiling surface, which includes a process of cleaning the ceiling surface at the cleaning location by moving along the surface. In the step of adjusting the inclination of the ceiling surface cleaning unit so that the traveling surface of the dry cleaning machine by the moving rail portion is arranged parallel to the ceiling surface, two elevating jacks provided on one side are provided. After adjusting the expansion and contraction so that the running surface in the direction perpendicular to the direction in which the two elevating jacks are lined up is arranged parallel to the ceiling surface in the same direction, it is provided on one side. By controlling the expansion and contraction of the two elevating jacks provided on one side in the direction in which the two elevating jacks are lined up, the traveling surface in the direction parallel to the direction in which these two elevating jacks are lined up is formed. The method for cleaning a ceiling surface using a vehicle for cleaning the ceiling surface according to claim 1, wherein the method is adjusted so as to be arranged parallel to the ceiling surface in the same direction. In the step of raising the ceiling surface cleaning unit until the contact sensor comes into contact with the ceiling surface while maintaining the state in which the traveling surface of the drywall sweeper is arranged parallel to the ceiling surface, the contact is at least one place. The method for cleaning a ceiling surface by a vehicle for cleaning the ceiling surface according to claim 1 or 2, wherein when the sensor comes into contact with the ceiling surface, the drive of all the elevating jacks is controlled to be automatically stopped at the same time. The aerial work platform is equipped with roller jacks provided in the four corner regions of the loading platform portion of the aerial work platform.
By moving the drywall sweeper along the moving rail portion, after the step of cleaning the ceiling surface at the sweeping point, the running surface of the drywall sweeper is arranged parallel to the ceiling surface. While holding it, with the roller portions at the lower ends of the four roller jacks in contact with the road surface, it is operated at low speed to the next adjacent cleaning location, and the ceiling surface grinding installed on the work deck. The method for cleaning a ceiling surface using a vehicle for cleaning the ceiling surface according to any one of claims 1 to 3, which comprises a step of moving the sweep unit to the next cleaning location.

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