JP2022100935A - Ceiling surface grinding unit - Google Patents

Abstract

To provide a ceiling surface grinding unit capable of efficiently grinding a ceiling surface of a concrete structure using a dry-type grinder.SOLUTION: A ceiling surface grinding unit includes a base frame section 11 having a mobile rail 18 provided on a top surface thereof, a lifting jack 15 provided on four sides of the base frame section 11, a distance sensor 16 disposed on four sides of the base frame section 11 for measuring a distance from a ceiling surface 50, and a contact sensor 17 for detecting a contact with the ceiling surface 50. Lifting/lowering by the lifting jack 15 is controlled so that the distance from the ceiling surface 50 measured by a plurality of the distance sensors 16 would be the same for arranging the mobile rail 18 to be parallel with the ceiling surface 50, and then the ceiling surface grinding unit is lifted until the contact sensor 17 comes in contact with the ceiling surface 50 while maintaining the parallel state, so as to set a dry-type grinder 30 to be ready for grinding the ceiling surface 50.SELECTED DRAWING: Figure 1

Description

The present invention relates to a ceiling surface cleaning unit, and more particularly to a ceiling surface cleaning unit capable of cleaning a ceiling surface by a dry type sweeper.

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 ceiling surface of a concrete structure. 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 that guides the elevating and lowering of the elevating frame is limited, so that the height of the ceiling surface that can be applied is limited. It is difficult to use it in a work site where it is difficult to install the outrigger part because the outrigger part needs to adjust the loading platform of the transport vehicle to be horizontal or substantially horizontal.

INDUSTRIAL APPLICABILITY According to the present invention, the ceiling surface of a concrete structure can be efficiently cleaned by a dry sweeping device by allowing it to be installed and used on an arbitrary support base arranged below the ceiling surface to be cleaned. The purpose is to provide a ceiling surface cleaning unit that can be used.

The present invention includes a dry sweeper and a moving rail portion for moving the dry sweeper, and is used by installing it on a support stand arranged below the ceiling surface to be cleaned. It is a ceiling surface cleaning unit capable of cleaning the ceiling surface with a sweeper, and the moving rail portion is interposed between the base frame portion provided on the upper surface portion and the base frame portion and the support frame. The elevating jacks installed on the four sides of the base frame, the distance sancers arranged on the four sides of the base frame to measure the distance to the ceiling surface in a non-contact manner, and the dry sweeper are sandwiched between them. It is configured to include at least two contact sensors arranged on both sides to detect contact with the ceiling surface, so that the distance to the ceiling surface measured by the distance sensor at at least three points is the same. After controlling the ascent and descent by the elevating jack and arranging the traveling surface by the moving rail portion in parallel with the ceiling surface, the contact sensor is placed on the ceiling surface while holding the traveling surface in a state parallel to the ceiling surface. The above object is achieved by providing a ceiling surface cleaning unit that can be raised until it comes into contact and can be set in a state where the ceiling surface is cleaned by the dry type sweeper.

In the ceiling surface cleaning unit of the present invention, the base frame portion has a rectangular planar shape, and the distance sensor is arranged at the four corner portions of the base frame portion, and the contact thereof. It is preferable that the sensors are arranged at the end portions on both sides of the base frame portion in the long side direction.

Further, it is preferable that the ceiling surface cleaning unit of the present invention is provided with an air cylinder capable of pressing the cutting disk of the cleaning machine main body against the ceiling surface of the dry type sweeper.

Further, in the ceiling surface cleaning unit of the present invention, it is preferable that the moving rail portion includes a left-right direction rail member and a front-rear direction rail member.

Furthermore, in the ceiling surface cleaning unit of the present invention, it is preferable that the support frame arranged below the ceiling surface to be cleaned is a work deck of an aerial work platform.

According to the ceiling surface cleaning unit of the present invention, the ceiling surface of a concrete structure can be dry-cleaned by installing it on an arbitrary support stand arranged below the ceiling surface to be cleaned. It can be efficiently cleaned by the device.

It is a side view explaining the use state of the ceiling surface cleaning unit which concerns on one preferable embodiment of this invention. It is a side view of the ceiling surface cleaning unit which concerns on one preferable embodiment of this invention. It is a top view of the ceiling surface cleaning unit which concerns on one preferable embodiment of this invention. It is a front view of the ceiling surface cleaning unit which concerns on one preferable embodiment of this invention. (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 unit 10 according to a preferred embodiment of the present invention has, for example, a ceiling surface 50 of a box culvert type road tunnel that has become old 30 years or more after the start of operation as a ceiling surface of a concrete structure. It is used as a device for sweeping by the dry sweeper 30. The ceiling surface cleaning unit 10 of the present embodiment is used as a support stand 41 by installing it on the work deck 41 of a known high-altitude work vehicle 40, and the drywall cleaning machine 30 is used along the ceiling surface 50 to be cleaned. It has a function to enable the movement in a stable state and to efficiently clean the ceiling surface 50 of the box culvert type road tunnel, which is a concrete structure, by the dry sweeping device 30. ing.

Then, as shown in FIGS. 2 to 4, the ceiling surface cleaning unit 10 of the present embodiment includes a drywall sweeper 30 and a moving rail portion 18 for moving the drywall sweeper 30, and cleans the ceiling surface. For ceiling surface cleaning that can clean the ceiling surface 50 with the drywall sweeper 30 by installing it on the work deck 41 of the high-altitude work vehicle 40, which is a support stand arranged below the ceiling surface 50. The moving rail portion 18 is interposed between the base frame portion 11 provided on the upper surface portion, the base frame portion 11 and the support frame (work deck) 41, and is located on all sides of the base frame portion 11. The elevating jack 15 installed, the distance sancer 16 which is arranged on four sides of the base frame portion 11 and measures the distance to the ceiling surface 50 in a non-contact manner, and the drywall sweeper 30 are arranged on both sides of the drywall sweeper 30. , At least two contact sensors 17 for detecting contact with the ceiling surface 50 are included. The elevating jack 15 controls the elevating and lowering so that the distance to the ceiling surface 50 measured by the distance sancer 16 at at least three points is the same, and the traveling surface by the moving rail portion 18 is arranged parallel to the ceiling surface 50. Later, while holding the running surface parallel to the ceiling surface 50, the contact sensor 17 can be raised until it comes into contact with the ceiling surface 50, and the ceiling surface 50 can be set to be cleaned by the drywall sweeper 30. (See Fig. 1).

Further, in the present embodiment, the base frame portion 11 has a rectangular planar shape (see FIG. 3), and the distance sensor 16 is arranged at the four corner portions of the base frame portion 11, and is a contact sensor. 17 is arranged at both end portions of the base frame portion 11 in the long side direction X.

Further, in the present embodiment, the moving rail portion 18 includes a left-right direction rail member 18a and a front-rear direction rail member 18b.

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 a hollow rectangle formed by a known construction method using, for example, cast-in-place concrete or precast concrete. It is a tunnel with a cross-sectional shape. 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 vertical gradient, the ceiling surface 50 also has a similar or substantially similar vertical section. The ceiling surface 50 is constructed in a state of being inclined in the extending direction of the tunnel so as to have a slope. In a box culvert type road tunnel, when the road surface 51 formed at the bottom of a hollow rectangular cross section has a cross slope, the ceiling surface 50 preferably crosses without sloping at the same cross slope. It is constructed in a state where the ceiling surface 50 is formed horizontally or substantially horizontally in the 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 for a truck bed, and a worker can perform various aerial work using the flat work floor of the work deck 41 as a scaffold. 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. Even for the ceiling surface 50 located at a considerable height, the ceiling surface cleaning unit 10 installed on the work deck 41 can efficiently perform the cleaning work.

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. The moving rail portion 18 described later is 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 above 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 X 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 which are arranged on four 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 which is arranged on four sides of the base frame portion 11 and measures the distance to the ceiling surface 50 in a non-contact manner, for example, transmits 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 sancer 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 sancer 16 attached to the base end portion. By attaching to the tip of the erection rod 48, which stands from the tip of the above-mentioned overhanging support plate 47 provided at the four corners of the base frame portion 11, the dry sweeper 30 is preferably sandwiched. At least two locations are provided at four locations on both sides of the base frame portion in the long side direction. 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 unit 10 of the present embodiment having the above configuration, the work deck 41 of the aerial work platform 40 is not raised. In this state, the ceiling surface cleaning unit 10 is loaded on the work deck 41 and moved to the cleaning point on the ceiling surface 53. 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 for cleaning the ceiling surface 50 of the box calvert type road tunnel which is a concrete structure by the ceiling surface cleaning unit 10 of the present embodiment, as shown in FIG. 1, the ceiling surface cleaning unit After moving the aerial work platform 40 loaded with 10 to the cleaning point of the ceiling surface 50, four roller jacks 44 provided in the four corner regions of the loading platform portion 43 of the aerial work platform 40 are used. By extending it, the roller portion 44a at the lower end of the roller portion 44a is brought into contact with the road surface 51, and the aerial work platform 40 and the loading platform portion 43 thereof provided so that the work deck 41 can be raised and lowered are installed in a stable state. Will be possible.

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. Raise it to about 200 mm.

Here, since the loading platform portion 43 of the aerial work platform 40 is arranged on the slope of the road surface 51, for example, and is not necessarily arranged horizontally, the work deck 41 raised by the drive of the elevating mechanism 42. Further, it is necessary to adjust the traveling surface of the cleaning machine main body 36 by the moving rail portion 18 of the ceiling surface cleaning unit 10 mounted on the ceiling surface cleaning unit 10 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 confirming the distance from the ceiling surface 50 by the distance sancer 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 sancer 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.

While rotating the cutting disk 36a, when the anti-scattering member around the cutting disk 36a is pressed against the ceiling surface 50, 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.

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 operated 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.

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 movement of the ceiling surface cleaning unit 10 and the cleaning work of the ceiling surface 50 at the cleaning location are repeated, for example, when the cleaning work 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 move the dry cleaning machine 30 to the central portion of the traveling surface. 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 by driving and controlling the elevating mechanism 42 of the aerial work platform 40. The aerial work platform 40 equipped with the cleaning unit 10 can be moved to another construction site.

Therefore, according to the ceiling surface cleaning unit 10 of the present embodiment and the cleaning method using the ceiling surface cleaning unit 10, the ceiling surface cleaning unit 10 includes a base frame portion 11 having a moving rail portion 18 provided on the upper surface portion and a base. The elevating jacks 15 installed on the four sides of the base frame portion 11 and the ceiling surface 50 are arranged on the four sides of the base frame portion 11 so as to be interposed between the frame portion 11 and the support stand (work deck) 41. It is configured to include a distance sensor 16 that measures the distance of the above in a non-contact manner, and at least two contact sensors 17 that are arranged on both sides of the drywall sweeper 30 and detect contact with the ceiling surface 50. Therefore, the ceiling surface cleaning unit 10 is supported by the support stand (working deck) 41, and after being installed below the ceiling surface 50 in close proximity to the ceiling surface cleaning unit 10, the dry type cleaning machine 30 is provided with a moving rail portion 18. It will be provided with a function of allowing the traveling surface to be arranged in parallel or substantially parallel to the ceiling surface 50 at a predetermined distance. As a result, the ceiling surface cleaning unit 10 of the present embodiment is installed and used on the work deck 41 of the high-altitude work vehicle 40 as an arbitrary support stand arranged below the ceiling surface 50 to be cleaned. The ceiling surface 50 of a box culvert type road tunnel, which is a concrete structure, can be efficiently cleaned by the dry cleaning device 30.

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 unit of the present invention does not necessarily have to be a box calvert type road tunnel, and the concrete girder of a concrete bridge or the like is used as a concrete structure. The bottom surface can be cleaned by the ceiling surface cleaning unit of the present invention as the ceiling surface to be cleaned. In addition, the support pedestal placed below the ceiling surface to be cleaned, where the ceiling surface cleaning unit is installed, does not necessarily have to be the work deck of the aerial work platform, but below the ceiling surface to be cleaned. It may be an assembled temporary scaffold, a work platform movably provided below the ceiling surface to be cleaned, or the like. Furthermore, of the four distance sansers arranged on the four sides of the base frame, three distance sansers 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.

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 Telescopic part 15c Installation board part 16 Distance Sancer 17 Contact sensor 18 Moving rail part 18a Left-right direction rail member 18b Front-back direction rail member 30 Dry sweeper 31 Traveling base 31a Traveling wheel 31b Traveling drive 32 Load cell 33 Intermediate plate 34 Air cylinder 35 Abrasive mounting plate 36 Cleaner body 36a Cutting disk 36b Suction dust collector 36c Drive motor 40 High-altitude work vehicle 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 (5)

The drywall sweeper is equipped with a drywall sweeper and a moving rail portion for moving the drywall sweeper, and by installing and using it on a support stand arranged below the ceiling surface to be cleaned, the drywall sweeper can be used to ceiling the ceiling. It is a ceiling surface cleaning unit that can clean the surface.
An elevating jack installed on all sides of the base frame portion with the moving rail portion interposed between the base frame portion provided on the upper surface portion, the base frame portion and the support frame portion, and the base frame portion. A distance sensor that measures the distance to the ceiling surface in a non-contact manner, and at least two locations that are arranged on both sides of the drywall sweeper to detect contact with the ceiling surface. Consists of including a contact sensor,
After controlling the elevating and lowering by the elevating jack so that the distances to the ceiling surface measured by the distance sensors at at least three places are the same, the traveling surface by the moving rail portion is arranged parallel to the ceiling surface. The ceiling can be set to a state in which the contact sensor is raised until it comes into contact with the ceiling surface while the traveling surface is held parallel to the ceiling surface, and the ceiling surface is cleaned by the dry type sweeper. Surface cleaning unit. The base frame portion has a rectangular planar shape, the distance sensor is arranged at four corner portions of the base frame portion, and the contact sensor is located in the long side direction of the base frame portion. The ceiling surface cleaning unit according to claim 1, which is arranged at both end portions. The ceiling surface cleaning unit according to claim 1 or 2, wherein the dry type cleaner is provided with an air cylinder capable of pressing a cutting disk of the cleaner body against the ceiling surface. The ceiling surface cleaning unit according to any one of claims 1 to 3, wherein the moving rail portion includes a left-right direction rail member and a front-rear direction rail member. The ceiling surface cleaning unit according to any one of claims 1 to 4, wherein the support stand arranged below the ceiling surface to be cleaned is a work deck of an aerial work platform.

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