JP7424588B2 - Tunnel wall tile heating device and tunnel wall tile heating removal method - Google Patents

Description

The present invention relates to a tunnel in which a large number of porcelain tiles are attached to the inner wall surface of a concrete frame along a road using an adhesive, and the surface side of the tiled wall surface on which the plurality of porcelain tiles are attached. A tunnel wall tile heating device and a tunnel wall, which are provided with an infrared irradiation device that heats by irradiating infrared rays from a tunnel wall, and a height adjustment mechanism that allows the infrared ray irradiation device to be adjusted up and down along the tiled wall surface. The present invention relates to a tile heating removal method.

Conventionally, in tunnels where a large number of porcelain tiles are pasted with adhesive to the inner wall of a concrete frame along the road, the inner wall of the tunnel has a laminated structure consisting of tiles, adhesive, and concrete frame. When these materials are subjected to changes in temperature and humidity from the outside, each constituent material expands and contracts differently due to differences in expansion coefficients due to the temperature and humidity of the material.In addition, free lime from the joints around the tiles and water leakage occur. There are areas where the porcelain tiles are peeling and peeling due to partial lifting and deterioration over time.
In particular, it has been confirmed that the adhesive restraint of a concrete frame is greater at the center than at the edges of a tiled wall surface, and peeling is more likely to occur from the edges due to the aforementioned expansion and contraction.
In response to this, recently, the porcelain tiles pasted on the concrete inner walls of tunnels have been removed from the concrete framework, and the inner walls of the concrete framework from which those porcelain tiles have been removed can be re-interiorized. It is considered. Furthermore, in long tunnels where peeling or peeling occurs in many places or over many tiles, porcelain tiles must be removed over a wide area or the entire surface for future safety.
Therefore, in order to heat the tunnel wall tiles and remove the porcelain tiles from the concrete structure in order to repair aging deterioration, we used a vertically swinging arm attached to a support erected on a base as a tunnel wall tile heating device. A tunnel wall heating device has been proposed in which a height adjustment mechanism is configured by attaching an infrared irradiation device to the tip of the vertically swinging arm (for example, see Patent Document 1).

JP2020-2748A

The above-mentioned conventional tunnel wall tile heating device changes the vertical height position of the infrared irradiation device by vertically moving a vertically swinging arm attached to a column, and heats tiles to a predetermined number of tiles glued to the tunnel wall. It heats porcelain tiles located at a height.
However, the tip of the vertically swinging arm changes in height in an arc upward and downward, and often does not always move along the arc curved surface of the inner wall of the tunnel.
In other words, the curvature of the wall surface of the tunnel not only differs depending on the size of the tunnel, but also the radius of curvature of the tunnel is often larger than the radius of curvature at which the tip of the vertically swinging arm moves vertically in an arc.
Therefore, as the tip of the vertically swinging arm moves up and down, the proximity distance between the infrared irradiation device and the wall tiles changes, and as a result, it is difficult to uniformly heat a large number of wall tiles located above and below. There is a problem.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tunnel wall heating device that solves the above-mentioned problems and can easily heat tunnel wall tiles evenly from above and below.

A first feature of the present invention is a tile installation in which a large number of porcelain tiles are attached to the inner wall surface of a concrete frame along a road using an adhesive. An infrared irradiation device that heats the wall by irradiating it with infrared rays from the surface side is provided on the wall, and a height adjustment mechanism is provided that allows the infrared irradiation device to be adjusted up and down along the tiled wall surface, and the infrared irradiation device is heated. A distance movement mechanism for enabling near and far movement relative to the tiled wall surface is provided separately from the height adjustment mechanism, and a vertical slide frame is provided to which the infrared irradiation device is mounted movably up and down to adjust the height. The vertical slide frame is attached to a column via a telescoping arm that supports the vertical slide frame so as to be movable near and far with respect to the tiled wall surface, thereby configuring the perspective movement mechanism, and the column is erected on a base. There is.

According to a first feature of the present invention, a distance movement mechanism that allows the infrared irradiation device to move near and far with respect to the tiled wall surface is provided separately from the height adjustment mechanism, Even if the curved surface of the tiled wall of a tunnel differs depending on the tunnel or the height position of the tunnel, when installing the infrared irradiation device at a predetermined height position using the height adjustment mechanism, it is difficult to By adjusting the proximity position of the tile using the distance moving mechanism, the distance between the tile and the tiles can be adjusted appropriately, making it easier to heat the tunnel wall tiles evenly from top to bottom.
Therefore, the tunnel tile removal work can be easily and reliably performed.

By providing a vertical slide frame and a telescoping arm, the infrared irradiation device can be moved from the side of the support installed on the base to the tiled wall surface of the tunnel at a predetermined height from where the base is installed. They can be easily placed in close proximity and heated without causing any damage.

A second characteristic configuration of the present invention is that the base is provided so as to be able to be placed on the loading platform of a movable traveling vehicle body, and the base of the support is fixed in a position that can be freely changed in the traveling direction of the traveling vehicle body. This is where a traveling direction displacement mechanism is installed.

According to a second feature of the present invention, the infrared irradiation device is supported by the support by providing a traveling direction displacement mechanism that attaches the base of the support to the base so that the fixed position can be changed freely in the travel direction of the traveling vehicle body. This makes it possible to heat tiles at different positions in the traveling direction of the tiled wall surface to be heated without changing the stopping position of the traveling vehicle body, making it easier to increase work efficiency.

A third feature of the present invention is that the base has a built-in work stage that can move in and out of the tiled wall surface in a direction toward and away from the tiled wall surface.

According to the third characteristic configuration of the present invention, when performing tile peeling work while heating the infrared irradiation device close to the tiled wall surface, the work stage is moved from the base so as to be close to the tiled wall surface. If it is made to protrude, a worker can work while riding on the work stage, improving work efficiency.

The characteristic structure of the fourth tunnel wall tile heating removal method of the present invention is that in a tunnel in which a large number of porcelain tiles are pasted with an adhesive to the inner wall surface of a concrete frame along a road, the large number of porcelain tiles are an infrared irradiation device that heats a tiled wall surface on which porcelain tiles are pasted by irradiating infrared rays from the surface side thereof; and a height adjustment mechanism that can adjust the vertical position of the infrared ray irradiation device along the tiled wall surface. is provided on a loading platform of a movable traveling vehicle body, and a traveling direction displacement mechanism capable of displacing the height adjustment mechanism in the traveling direction of the traveling vehicle body is provided, and the infrared ray irradiation device is positioned near or far from the tiled wall surface. A distance movement mechanism that enables movement operation is provided between the infrared ray irradiation device and the traveling direction displacement mechanism separately from the height adjustment mechanism, and at least when the traveling vehicle body is moved, the distance movement mechanism is used to control the infrared rays. The irradiation device is moved away from and close to the tiled wall surface, and the height adjustment mechanism is used to adjust the vertical position of the infrared ray irradiation device along the tiled wall surface to remove the tile and displace the tile in the running direction. Using a mechanism, the infrared irradiation device is moved back and forth along the tiled wall surface, and by repeating these steps, the infrared ray irradiation device is moved up and down and back and forth along the tiled wall surface while the traveling vehicle body is stopped. to remove the tile.

According to the fourth feature of the present invention, since the heater is simply moved back and forth using the moving direction displacement mechanism, the heater is less likely to be misaligned and the work can be done quickly.
At least, it is possible to prevent the heater from hitting the tile surface when the vehicle is moving.

A fifth characteristic configuration of the present invention is to move the traveling direction displacement mechanism from the original position to the final position and remove the first unit of wall tiles using the height adjustment mechanism, The purpose is to move the vehicle to the wall of the second unit and remove the tiles on the wall of the second unit.

According to the fifth characteristic configuration of the present invention, once the wall surface of the first unit is removed by the traveling direction displacement mechanism, the traveling vehicle is moved to remove the next second unit, thereby positioning the heater. Tiles can be removed rationally by reducing the time required for alignment.

FIG. 2 is a left side view of the wall tile heating device of the present invention. In the wall tile heating device of the present invention, (a) is a plan view, and (b) is a right side view. These are action diagrams illustrating how to use the present invention, (a) shows the heating state of the bottom wall tile, (b) shows the heating state of the wall tile at an intermediate position, and (c) shows the heating state of the top wall tile. FIG. FIG. 2 is a plan view illustrating the use of the present invention, in which (a) shows the usage state in the rearmost position, (b) shows the usage state in the intermediate position, and (c) shows the usage state in the frontmost position. 3 is a plan view illustrating the use of the present invention, (a) shows the vehicle body stopped at a predetermined position on the road, (b) shows the infrared panel heater raised to the top, and (c) shows the support column. (d) shows the infrared panel heater lowered, and (e) shows the infrared panel heater swung upward to move it along the wall. FIG. In the left side views of another embodiment, (a) shows the infrared panel heater at a predetermined position on the road and close to the inspection road side, (b) shows the support column extended upward, and (c) shows the infrared panel heater at a predetermined position on the road. The telescopic arm is shown in an extended state, and (d) shows a state in which the column is extended and contracted downward to bring the infrared panel heater close to the wall panel on the inspection path. In the left side view of another embodiment, (a) shows a state in which the infrared panel heater is brought closer to the inspection road side at a predetermined position on the road, and (b) shows a state in which the height position of the infrared panel heater is raised; (c) shows the state in which the support has been moved to bring the infrared panel heater closer to the wall surface side, and (d) shows the state in which the infrared panel heater has been processed to bring it closer to the lowest wall tile on the inspection path.

Embodiments of the present invention will be described below based on the drawings.
[Wall tile heating device]
1, 2(a) and (b), in addition to Portland cement and silica sand, ethylene-vinyl acetate-based re-emulsified powder was added to the inner wall surface of the concrete frame 2 along the road 1, especially on the side surfaces. Mortar for adhering tiles, such as so-called polymer cement mortar, in which a resin is mixed or an ethylene-vinyl acetate copolymer emulsion is mixed into cement and silica sand to ensure a strong bond between cement and aggregate, and epoxy resin. A porcelain tile direct attachment tunnel is shown in which a large number of porcelain tiles 4 are directly attached through an adhesive 3 such as a synthetic resin adhesive.
Fire detectors are installed at predetermined intervals along the road 1 on a part of the concrete frame 2 on at least one of the left and right lateral sides of the tunnel, and fire hydrants and fire extinguishers are installed (not shown). In addition, an inspection road 5 is provided along the road 1 as a stepped section for the passage of traffic inspectors. A hand hole (not shown) is formed.
Incidentally, the tile adhesive 3 can be used at sites where many porcelain tiles 4 have peeled off or fallen off due to environmental changes such as changes in temperature and humidity, free lime, and water leakage, as well as aging deterioration, on the tiled walls of the tunnel. In order to ensure road traffic safety, the porcelain tiles 4 are removed over a wide area or entirely, including the areas where the tiles remain stuck with the adhesive 3 in addition to the areas where the porcelain tiles 4 have been peeled off. Must.
Therefore, in order to repair aging deterioration, it has been proposed to heat the tunnel wall tiles and remove the porcelain tiles 4 from the concrete frame. shows.

As shown in FIG. 1, an infrared irradiation device 6 is installed to radiate infrared rays from the surface side of a tiled wall surface on which a large number of porcelain tiles 4 are pasted to heat it, and the infrared ray irradiation device 6 is installed along the tiled wall surface. A height adjustment mechanism 7 that can adjust the vertical position is provided, and a distance movement mechanism 8 that allows the infrared irradiation device 6 to be moved near and far with respect to the tiled wall is provided separately from the height adjustment mechanism 7. A wall tile heating device is constructed.

The infrared ray irradiation device 6 is an infrared panel heater 9 equipped with a gas combustion burner because it requires a large amount of heat, and has a vertical slide frame 10 to which the infrared ray irradiation device 6 is mounted movably up and down, and has a height adjustment mechanism. 7, a vertical slide frame 10 is attached to the upper end of a support column 12 erected on a base 11 via an extendable arm 13 that supports the tiled wall so as to be movable near and far, and connected to a perspective moving mechanism 8. It is configured.

In FIG. 2B, the vertical slide frame 10 is constructed by vertically dividing the frame into four parts and fitting each other to be vertically expandable and contractible.

As shown in FIG. 1, FIG. 2, and FIG. It is attached to the base 11 via a first trolley 16 whose fixed position can be changed in the direction, thereby forming a traveling direction displacement mechanism 17.
Therefore, the infrared irradiation device 6 supported by the pillar 12 can heat tiles at different positions in the running direction without changing the stopping position of the running vehicle 14 with respect to the tiled wall surface to be heated, making it easy to increase work efficiency. (Fig. 4(a), (b), (c)).

Further, as shown in FIGS. 2(a) and 5(a) to (c), the telescopic arm 13 is attached to the support column 12 from the storage posture position A along the traveling direction on the traveling vehicle body 14 in plan view. The extensible arm 13 is attached so as to be rotatable left and right about the vertical axis 18 so that the tip of the extendable arm 13 is brought close to the tiled wall surface and the infrared irradiation device 6 is placed in a tile heating position B in which it faces a large number of tiles.

As shown in FIGS. 1 and 3(a) to 3(c), the infrared panel heater 9 is guided and supported by a vertical slide frame 10 via a second cart 19 so as to be able to slide up and down. A second cart 19 is suspended and supported by a wire 21 of a wire winding motor 20 attached to the upper end of the second cart 19 so as to be able to freely change its vertical position.
The infrared panel heater 9 is attached to the second truck 19 via a pivot shaft 28 so as to be able to swing up and down, and its swing angle is set so that the surface of the infrared panel heater 9 is parallel to the tiled wall surface. A changeable turnbuckle 22 or coil spring is provided.
In addition, when attaching a coil in place of the turnbuckle 22, by pressing the infrared panel heater 9 against the tiled wall surface, the posture of the infrared panel heater 9 can be made to follow the inclination of the tiled wall surface. There is no need to adjust buckles, etc., and work efficiency can be improved.

As shown in FIGS. 1, 5(d) and 5(e), the telescopic arm 13 is capable of moving in and out of the second arm member 13B on the distal end side with respect to the first arm member 13A on the base side attached to the support column 12. The first arm member 13A is fitted into the first arm member 13A, and is configured to be extendable and retractable by driving the screw type electric cylinder 23 attached to the first arm member 13A.

As shown in FIGS. 1 and 5, the base 11 has built-in work stages 24 at three locations in the traveling direction of the traveling vehicle body 14, which can move in and out in the direction of distance from the tiled wall surface. There is.
The work stage 24 has a safety fence 25 attached to its tip side and a chain fence 26 detachably attached to its lateral side.
Therefore, if necessary, each work stage 24 can be made to protrude from the base 11, and a worker can sit on the work stage 24 and adjust the vertical angle of the infrared panel heater 9 while approaching the wall. It is possible to remove the porcelain tiles 4 on the wall.

[Another embodiment]
Other embodiments will be described below.
In addition, in the following other embodiments, the same reference numerals are given to the same members as in the above embodiment.
<1> To configure the height adjustment mechanism 7, as shown in FIGS. 6(a) to 6(d), a support 12 is provided that is erected on the base 11, and the infrared ray irradiation device 6 is attached to a tiled structure. The telescopic movement mechanism 8 may be constructed by attaching to the upper part of the column 12 via an extendable arm 13 that supports the wall surface so as to be movable near and far, and the column 12 may be configured to be vertically extendable and retractable. In this case, the center of gravity of the entire system moves closer to the mounting position of the support column 12 on the base 11, making it easier to stabilize the position adjustment operation of bringing the infrared irradiation device 6 closer to the tunnel wall using the telescopic arm 13.
<2> The distance movement mechanism 8 is not limited to the telescopic structure of the telescopic arm 13 described in the previous embodiment, but can also support the infrared ray irradiation device 6, as shown in FIGS. 7(a) to 7(d), for example. The support 12 is set up on the base 11 so that the base 11 can be placed on the loading platform 15 of the movable traveling vehicle body 14. It may be formed by being attached to 11. In this case, the telescoping arm 13 is not required or the weight can be reduced, and the center of gravity of the wall tile heating device is closer to the column 12 in plan view, making it more stable, and the weight of the members attached to the column 12 can be reduced. I can figure it out.
<3> In FIG. 2(b), the vertical slide frame 10 is made up of a frame of four members that fit together, but it is also possible to fit one member or two to five divided members into each other. Good too.

Next, a method for removing tunnel wall tiles by heating will be explained.
Below the left and right side walls of the tunnel, as shown in Figures 1 and 5, there is an inspection road 5 with a step (about 80 to 90 cm in height) on one side (Figure 1), and an overtaking lane on the other side. The inspection path 5 is not provided on the side (FIG. 2(b), FIGS. 3(a) to (c), and FIGS. 4(a) to (c)).

[How to heat wall tiles]
1. First stage For example, as shown in FIGS. 5(a) to 5(e), taking the case of the wall surface on the inspection road 5 side as an example, a wall surface placed on the loading platform 15 of a traveling vehicle body 14 such as a truck In the tile heating device, the telescoping arm 13 with the infrared irradiation device 6 provided on the tip side is rotated around the vertical axis 18 from the storage position A to the tile heating position B (Fig. 5(a) → ( b)→(c)) At this time, the wire 21 is wound up and held at a high position by the winding drive of the wire winding motor 20 so that the infrared panel heater 9 does not hit the handrail 27 of the inspection path 5. At the same time, it is necessary to reduce the vertical slide frame 10 to the minimum length.
When the infrared panel heater 9 approaches the wall tiles, it is moved along the surface of either the upper wall tile group or the lower wall tile group (heating is given priority to one side) (Fig. 1, Fig. 5). c), (d), (e)) The infrared panel heater 9 is swung up and down by the turnbuckle 22 or the coil spring to adjust its inclination, and the heating process begins.

2. Second stage Next, as shown in FIGS. 4(a) to 4(c), without moving the vehicle body 14, the position of the support column 12 is moved in the traveling direction by the traveling direction displacement mechanism 17 ( 4(a)→(b)→(c)), the infrared irradiation device 6 is displaced in the running direction along the wall tile to heat the unheated wall tile.

For the wall tiles on the passing lane side, the same operation as above is performed, but in particular, as shown in FIGS. 3(a) to 3(c), the vertical slide frame 10 is extended downward and the infrared panel heater 9 is lowered to the lowest position, and the wall tiles are displaced from the lowest wall tile group position (Fig. 3 (a)) to higher positions in order (Fig. 3 (b) → (c)) and heat treated, or On the contrary, the heat treatment is performed by displacing it from the uppermost position (FIG. 3(c)) to the lowermost position.

Further, as shown in FIGS. 1 to 3, the work stage 24 can be moved in and out according to the distance from the base 11 to the wall and the position of the infrared panel heater 9 to make it easier for the worker to work. good.

Note that after each wall tile is heated, the tile is removed.
Tiles are removed at one stop position in units of units indicated by symbols U1 and U2 in FIGS. 4(a) and 4(c).

In the first unit U1, the traveling direction displacement mechanism 17 is moved from the original position to the final position, and the height adjustment mechanism 7 is used to remove tiles on the wall surface of the unit, and then in the second unit The traveling vehicle body 14 is moved to the wall surface of U2, and the tiles on the wall surface of the second unit U2 are removed.

A distance moving mechanism 8 that enables the infrared ray irradiation device 6 to be moved far and near with respect to the tiled wall surface is provided between the infrared ray irradiation device 6 and the running direction displacement mechanism 17 separately from the height adjustment mechanism 7, and at least When the traveling vehicle body 14 moves, the infrared irradiation device 6 is moved away from and close to the tiled wall surface using the distance movement mechanism 8.

Incidentally, as mentioned above, although the reference numerals are written for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by the markings. Moreover, it goes without saying that the invention can be implemented in various ways without departing from the gist of the invention.

3 Adhesive 4 Porcelain tile 6 Infrared irradiation device 7 Height adjustment mechanism 8 Perspective movement mechanism 10 Vertical slide frame 11 Base 12 Support 13 Telescopic arm 14 Traveling vehicle body 15 Loading platform 24 Work stage U1 First unit U2 Second unit 1 unit

Claims (5)

In a tunnel, many porcelain tiles are attached with adhesive to the inner wall of the concrete structure along the road.
An infrared irradiation device is provided for heating the tiled wall surface on which the plurality of porcelain tiles are pasted by irradiating infrared rays from the surface side thereof,
a height adjustment mechanism that allows the infrared irradiation device to be adjusted up and down along the tiled wall;
A distance movement mechanism that enables the infrared irradiation device to be moved near and far with respect to the tiled wall surface is provided separately from the height adjustment mechanism,
The height adjustment mechanism is configured by providing a vertical slide frame to which the infrared irradiation device is movably mounted up and down;
The vertical slide frame is attached to a support via a telescoping arm that supports the vertical slide frame so as to be movable near and far with respect to the tiled wall surface, thereby configuring the near and far movement mechanism,
A tunnel wall tile heating device in which the pillar is erected on a base. The base is provided so that it can be placed on a loading platform of a traveling vehicle body that is movable,
2. The tunnel wall tile heating device according to claim 1, further comprising a traveling direction displacement mechanism for attaching the base of the support column to the base so that the fixed position can be freely changed in the traveling direction of the traveling vehicle body. 3. The tunnel wall tile heating device according to claim 1, wherein the base has a built-in working stage that is movable in the direction of distance from and away from the tiled wall surface. In a tunnel in which a large number of porcelain tiles are attached to the inner wall of a concrete frame along a road using adhesive, infrared rays are irradiated from the front side of the tiled wall with the large number of porcelain tiles attached. an infrared irradiation device that heats the infrared irradiation device, and a height adjustment mechanism that can adjust the vertical position of the infrared irradiation device along the tiled wall surface on a loading platform of a movable traveling vehicle body;
a traveling direction displacement mechanism capable of displacing the height adjustment mechanism in the traveling direction of the traveling vehicle body;
A distance movement mechanism that enables the infrared irradiation device to be moved far and near with respect to the tiled wall surface is provided between the infrared ray irradiation device and the traveling direction displacement mechanism, separately from the height adjustment mechanism,
At least when the traveling vehicle body moves, the infrared irradiation device is moved away from and close to the tiled wall surface using a distance movement mechanism;
Using the height adjustment mechanism, the infrared ray irradiation device is adjusted to change the vertical position along the tiled wall surface to remove the tile, and the traveling direction displacement mechanism is used to move the infrared ray irradiation device onto the tiled wall surface. A method for heating and removing tiles on a wall surface of a tunnel, in which tiles are removed by moving the infrared irradiation device up and down and back and forth along the tiled wall surface by repeating these steps while the traveling vehicle body is in a stopped state. The traveling direction displacement mechanism is moved from the original position to the final position, and the height adjustment mechanism is used to remove the tiles on the wall of the first unit, and the traveling vehicle body is moved to the wall of the next second unit. 5. The method for heating and removing wall tiles of a tunnel according to claim 4, wherein the second unit of wall tiles is removed by moving the tiles.

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