JP2003306901A - Corrosionproofing construction method and corrosionproofing device for horizontal plane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely carry out a corrosionproofing by forming a corrosionproof coated layer, in which a finished surface is smooth and has a uniform thickness, on the horizontal plane of a structure while improving an environment on the execution of works, and to shorten a construction time. <P>SOLUTION: A coating unit 2 is arranged on the horizontal plane Ka on a steel girder, and a synthetic-resin liquid coating agent La mixed and formed in a mixing tube 3 is dropped and made to flow towards the horizontal plane Ka on the steel girder from the opening section 5a of a nozzle 5. A sliding cylinder 14 is driven simultaneously in this case, the coating unit 2 is rocked in the cross directions X1 and X2 by a fixed number of rocking through a rod 13 while a truck 15 is made to travel and moved on guide rails 16 arranged in parallel with the longitudinal directions Y1 and Y2, and the coating unit 2 is displaced gradually in the longitudinal direction Y2 through a frame 10. The synthetic-resin coating agent La is dropped and made to flow and cured at regular pitches, and the smooth corrosionproof coated layer Lb having the uniform thickness is formed on the horizontal plane Ka on the steel girder. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents corrosion by applying a synthetic resin liquid coating agent obtained by mixing a synthetic resin liquid and a curing agent on a horizontal surface of a structure such as a steel girder in an iron bridge of a railway or the like. The present invention relates to an anticorrosion treatment method for performing a treatment and an anticorrosion treatment apparatus for performing this method.

[0002]

2. Description of the Related Art The surface of structures such as bridge girders in railways and other railway bridges is generally made of materials such as steel and concrete. Deterioration such as erosion and wear due to soil and sand and weathering occurs. Therefore, as a countermeasure against corrosion and abrasion resistance on the surface of the above steel materials and concrete, conventionally, by applying a synthetic resin liquid coating agent, which is a mixture of a synthetic resin liquid and a curing agent, to the surface and curing it, corrosion protection is achieved. There is an anticorrosion treatment method for performing treatment.

In this method, when a resin having a relatively slow curing speed of 10 minutes to several tens hours is used, a coating agent containing a synthetic resin liquid and a curing agent is poured on the horizontal surface of the structure to apply a brush or a spatula, Alternatively, a method of applying by spreading with a roller or the like is adopted. Also, the curing time is 30
When using a relatively fast resin from seconds to 1 minute,
Since the curing speed of the resin is fast, it is not possible to apply the method of spreading with a brush, spatula, roller, etc., using a spraying device equipped with a mixing section for mixing the synthetic resin liquid and the curing agent at the tip. , Immediately spray the mixed coating agent at a high pressure using a method of spraying the mixed coating agent immediately with air or using a spraying device having a mixing section for mixing the synthetic resin liquid and the curing agent at the tip. The method of using the method is adopted.

[0004]

However, in the above-mentioned conventional anticorrosion treatment method, in the method of spreading and applying the coating agent with a brush, spatula, roller, etc., the coating thickness depends on the spreading method of the coating agent. However, there is a problem that the coating agent flows due to the influence of the unevenness of the horizontal surface and the finished surface is not smooth because the coating agent tends to become non-uniform and it takes time from the application of the coating agent to the curing. further,
When forming a thick coating layer to further improve corrosion resistance and abrasion resistance, it is necessary to coat the coating layers in multiple layers, increasing the number of coating and curing steps of the coating agent, and increasing the construction time. There is a problem of becoming. Further, in the air spray method of spraying and applying the coating agent using air, or in the method of using the airless spray method of spraying and coating the coating agent at a high pressure, a resin having a relatively fast curing time is used. Although a thick coating layer can be formed at one time, there is a problem in that the finished surface of the coating layer becomes rough due to uneven coating of the coating agent and inclusion of air bubbles. In addition, the spraying of the coating agent creates a spray that scatters around, creating a bad construction environment, and when the construction is carried out on a horizontal surface of a steel girder such as an iron bridge of a railway, there is a problem that the surrounding houses will be adversely affected. is there.

The present invention is intended to solve the above-mentioned problems, and its object is to form an anticorrosion coating layer having a smooth finished surface and a uniform thickness on a horizontal surface of a structure to surely perform anticorrosion treatment. It is an object of the present invention to provide a horizontal surface anticorrosion treatment method and an anticorrosion treatment device that can perform the above-mentioned treatment, improve the construction environment, and shorten the construction time.

[0006]

In order to solve the above-mentioned problems, the method of anticorrosion treatment on a horizontal surface of a structure according to the present invention comprises a synthetic resin liquid having a high curing rate and a curing agent supplied from an external supply means. A mixing unit that internally mixes to generate a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing pipe is disposed on a horizontal plane of the structure, and the coating unit is placed on a horizontal plane. While moving in the front-back direction and rocking in the left-right direction, the synthetic resin liquid coating agent is dripped onto the horizontal plane from the nozzle, thereby diffusing the synthetic resin liquid coating agent on the horizontal plane and ensuring a smooth and uniform thickness. An anticorrosion coating layer is formed.

By doing so, the synthetic resin liquid coating agent dripping on the horizontal surface of the structure diffuses on the horizontal surface due to the viscosity of the resin and becomes a uniform thickness and is instantly cured. It is possible to form a high-quality anticorrosion coating layer having a large thickness and a smooth finished surface, and to reliably perform anticorrosion treatment. Moreover, since the curing time of the synthetic resin liquid coating agent used is fast, the construction time can be shortened.

When the anticorrosion treatment method according to the present invention is applied to the anticorrosion treatment on the horizontal surface of a steel girder in a railway iron bridge, the sleepers and rails laid on the horizontal surface of the steel girder are lifted to remove the steel. A narrow gap is provided between the horizontal surface of the girder and the sleepers, and a synthetic resin liquid having a high curing rate supplied from an external supply means and a curing agent are internally mixed to generate a synthetic resin liquid coating agent. A coating unit including a pipe and a nozzle provided at the tip of the mixing pipe is inserted into the narrow gap, and the coating unit is displaced along the horizontal surface of the steel girder in the longitudinal direction of the steel girder. While oscillating in the width direction of the girder, the synthetic resin liquid coating material is dripped from the nozzle to spread the synthetic resin liquid coating material on the horizontal surface of the steel girder, forming a smooth and uniform anticorrosion coating layer. To do.

By doing so, a high-quality anticorrosion coating layer having a thick and uniform thickness and a smooth finished surface is formed on the contact surface between the horizontal surface of the steel girder and the sleeper, and the anticorrosion treatment is surely performed. be able to. Further, since the anticorrosion coating layer is formed without the synthetic resin liquid coating agent scattering, the construction environment can be improved.

Further, in the anticorrosion treatment method according to the present invention, the synthetic resin liquid coating material may be dripped on the horizontal surface from the nozzle while the coating unit is moved only in the front-back direction along the horizontal surface. This method can be adopted when a corrosion-resistant coating layer having a uniform thickness is formed on a horizontal surface of a steel frame member having a slight width in a structure.

Further, in the case where anticorrosion treatment is applied to a horizontal surface on a steel girder or a horizontal surface such as a steel member having a slight width, by providing walls along both sides of the horizontal surface, synthetic resin dripping on the horizontal surface is provided. It is preferable that the liquid does not drip from the horizontal plane.

[0012] By doing so, it is possible to prevent the synthetic resin liquid coating agent from dripping from the steel girder, the steel frame member, etc., and to improve the working environment for the anticorrosion treatment.
It is possible to use the synthetic resin liquid coating agent without waste and reduce the material cost.

Further, in the construction method of the present invention, it is preferable to blow air onto the synthetic resin liquid coating agent that has flowed down on a horizontal surface.

By doing so, it is possible to prevent the diffusion of the resin from being promoted and to prevent the formation of pinholes due to air bubbles in the anticorrosion coating layer, and to form an anticorrosion coating layer having a uniform thickness and a smooth finished surface. You can

Furthermore, the anticorrosion treatment apparatus for carrying out the anticorrosion treatment method according to the present invention comprises (1) a synthetic resin liquid having a high curing rate supplied from an external supply means and a curing agent mixed therein. A coating unit including a mixing pipe for generating a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing pipe,
(2) a support portion that supports the coating unit, (3) a moving body that connects the support portions and moves the coating unit in the front-rear direction,
(4) A drive unit that swings the coating unit in the left-right direction.

The coating unit supported by the support portion moves in the front-back direction along the horizontal plane of the structure by the moving body, and swings in the left-right direction by the drive unit, while the synthetic resin liquid coating agent flows down from the nozzle. . by this,
The synthetic resin liquid coating agent is diffused on the horizontal surface to form a smooth and uniform thickness anticorrosion coating layer.

By using such an apparatus, depending on the construction range of the anticorrosion treatment and the thickness of the anticorrosion coating layer to be formed,
It is possible to adjust the amount of synthetic resin liquid coating liquid drowning and the pitch of the coating unit that is swung and moved to form a high-quality anticorrosion coating layer that has a uniform thickness on a horizontal surface and a smooth finished surface. It is possible to reliably perform anticorrosion treatment.

Further, the anticorrosion treatment apparatus for carrying out the anticorrosion treatment method for the horizontal surface on the steel girder includes (1) a synthetic resin liquid having a high curing rate supplied from an external supply means and a curing agent which are mixed internally. Coating unit for producing a synthetic resin liquid coating agent and a nozzle provided at the tip of the mixing pipe; (2) support unit for supporting the coating unit; and (3) main body for connecting the support unit. And a wheel provided on the main body, which travels on a guide rail attached to the side surface of a steel girder in a railway iron bridge to displace the coating unit in the longitudinal direction of the steel girder, (4) coating A drive unit that swings the unit in the left-right direction.

The coating unit which is inserted into the narrow gap between the sleeper laid on the steel girder and the horizontal surface on the steel girder,
On the steel girder, by displacing the synthetic resin liquid coating agent from the nozzle while oscillating in the width direction of the steel girder by the drive unit while displacing it in the longitudinal direction of the steel girder along the horizontal surface of the steel girder. Diffuse the synthetic resin liquid coating agent on the horizontal surface,
An anticorrosion coating layer having a smooth and uniform thickness is formed.

By using such a device, the amount of the synthetic resin liquid coating agent dripped and the amount of the synthetic resin liquid coating agent dripped depending on the range of the horizontal surface on the steel girder and the thickness of the anticorrosion coating layer formed, and the shaking and movement of the coating unit. The pitch can be adjusted, and a smooth and uniform anticorrosion coating layer that instantly cures can be formed on the horizontal surface, and the anticorrosion treatment can be reliably performed. Further, since the application unit has a size that can be inserted into the narrow gap formed between the steel girder and the sleeper, the lifting amount of the sleeper and the rail can be made a small amount. For this reason,
Since it is not necessary to correct the track after the sleepers and rails have been lowered onto the steel girder, the construction time can be shortened.

When the synthetic resin liquid coating material is dripped on the horizontal surface of a steel frame member or the like having a small width in the structure, a drive unit for swinging the coating unit in the left and right direction is not provided, and A coating unit including a mixing pipe for internally mixing a synthetic resin liquid having a high curing rate supplied from a supply unit and a curing agent to generate a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing pipe. The anticorrosion treatment device can be configured by (2) a support portion that supports the coating unit and (3) a moving body that connects the support portions and moves the coating unit in the front-rear direction. Of course, it is also possible to use the anticorrosion treatment apparatus provided with the drive unit to drip the coating agent only by moving in the front-back direction.

Further, in the anticorrosion treatment apparatus according to the present invention, it is preferable that the opening portion of the nozzle has a vertically long slit shape capable of flowing the synthetic resin liquid coating agent over a wide area in a wide range. .

By using such an apparatus, even if a protrusion such as a rivet is projected on the horizontal surface, the entire protrusion is uniformly coated with the synthetic resin liquid coating agent, and the anticorrosion coating layer having a uniform thickness is formed. Can be formed. Further, since the synthetic resin liquid coating material flows out from the opening over the entire length of the slit, the displacement amount of the coating unit can be increased and the construction time can be shortened.

Further, in the anticorrosion treatment apparatus according to the present invention, the coating unit may be provided with an air nozzle for spraying air onto the synthetic resin liquid coating agent drowning on the horizontal plane.

By doing so, as described above,
By blowing air from the air nozzle onto the resin surface, it is possible to prevent pinholes from occurring in the anticorrosion coating layer,
An anticorrosion coating layer having a uniform thickness and a smooth finished surface can be formed.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an anticorrosion treatment apparatus according to the present invention, in which a sleeper and a rail laid on a steel girder of a railway iron bridge are lifted, and a narrow gap provided between the steel girder and the sleeper. It is shown that it has been inserted into. Figure 1
2 is a plan view of the anticorrosion treatment apparatus, FIG. 2 is a right side view thereof, FIG. 3 is a front view thereof, and FIG. 4 is a sectional view taken along line AA in FIG.

In FIG. 1, K is a steel girder, Ka is a horizontal surface on the steel girder, and Kb is a connecting portion for connecting the steel materials forming the steel girder. The upper surface of the steel girder K is shown in FIGS.
As shown in, a sleeper W and a rail R connected to the sleeper W are laid. Reference numeral 1 is an anticorrosion treatment device. Reference numeral 2 denotes a coating unit, which mixes a synthetic resin liquid as a main component and a curing agent for the synthetic resin liquid by a static mixer 4 provided therein to generate a synthetic resin liquid coating agent La.
And a nozzle 5 provided at the tip of the mixing pipe 3 for discharging the generated synthetic resin liquid coating agent La onto the horizontal surface Ka, and provided at the rear end of the mixing pipe 3, the synthetic resin liquid and a curing agent for the synthetic resin liquid. And an introducing section 6 for introducing the above into the mixing tube 3. Reference numeral 7 denotes a main agent supply source, which supplies a synthetic resin liquid, which is the main agent, to the coating unit 2 via a supply hose 9a by a connected pump Pa. Reference numeral 8 denotes a curing agent supply source, which supplies the curing agent of the synthetic resin liquid to the coating unit 2 via the supply hose 9b by the connected pump Pb.

Reference numeral 10 denotes a frame which is a support portion for supporting the coating unit 2. By attaching a slide member 12 connected to the coating unit 2 to a slide guide 11 connected to the frame 10, the coating unit 2 is attached to a steel girder. It is slidably supported in the left and right directions X1 and X2, which are the width direction of K. Further, as shown in FIG. 3, the thickness of the frame 10 in the height direction is thin. By reducing the thickness in this way, the amount of lifting the sleepers W and the rails R from the steel girder K can be reduced and anticorrosion treatment can be performed. Further, the frame 10 has a three-piece structure including a front end frame 10a, an intermediate frame 10b, and a rear end frame 10c.
b is connected by a joint 10d, the intermediate frame 10b and the rear end frame 10c are connected by a joint 10e, and the intermediate frame 10b is removable. With such a structure, if the intermediate frame 10b is removed and the front end frame 10a and the rear end frame 10c are connected by the joints 10d and 10e, the bogie 15 and the guide rail 16 to be described later are left as they are, and two steels are provided. It is possible to perform anticorrosion treatment on any of the digits K.

Reference numeral 14 is a slide cylinder which is a drive unit, and one end of a rod 13 is attached to the slide cylinder. Since the other end of the rod 13 is connected to the slide member 12 connected to the coating unit 2, the slide cylinder 14 swings the coating unit 2 in the left and right directions X1 and X2 via the rod 13. The slide cylinder 14 can be pneumatic, hydraulic, or electrically driven by a ball screw or the like. Further, the rod 13 has a two-piece structure, the front end rod 13a and the rear end rod 13b are connected by a joint 13c, and the front end rod 13a is removable. With such a structure, like the frame 10, the tip rod 13
By removing a and connecting the rear end rod 13b to the slide member 12, it is possible to perform anticorrosion treatment on any of the two steel girders K while leaving the carriage 15 and the guide rail 16 described later. Becomes

A dolly 15 is a moving body for connecting the frame 10. The main body 15a, the connecting portion 15b for connecting the frame 10 on the main body 15a, and the frame 10 of the steel girder K on the main body 15a. A slide bar 15c slidably supported in the longitudinal directions Y1 and Y2, a wheel 15d having a wheel release prevention plate inside, and a wheel 1d that rotates the wheel 15d.
It is composed of a motor 15e for moving the motor 5.
Since the carriage 15 travels on the guide rails 16 arranged in parallel with the longitudinal directions Y1 and Y2 of the steel girder K by the wheels 15d rotated by the motor 15e, the frame 10
Through the coating unit 2 in the longitudinal direction Y1, Y2 of the steel girder K.
Of these, it can be displaced in the Y2 direction. Further, since the frame 10 is connected to the main body 15a of the carriage 15 by the connecting portion 15b and supported by the slide bar 15c, the frame 10 is moved on the main body 15a so that the position of the coating unit 2 is changed to the steel. Fine adjustment can be made in the longitudinal directions Y1 and Y2 of the beam K. The guide rail 16 is supported by a bracket 17 which is fixed to a connecting portion Kb on the side surface of the steel girder K by a mounting member 17a. Reference numeral 18 is a guide wheel for preventing the frame 10 from bending.

Next, the operation of each part when the anticorrosion treatment apparatus 1 having the above-mentioned structure is subjected to the anticorrosion treatment on the horizontal surface of the steel girder will be described. First, in the anticorrosion treatment apparatus 1, the coating unit 2 is supplied with the synthetic resin liquid as the main component and the curing agent. The synthetic resin liquid is supplied from the main agent supply source 7 by the pump Pa to the supply hose 9a.
It is supplied to the introduction unit 6 via. Hardener is hardener supply source 8
From the pump Pb via the supply hose 9b to the introduction part 6
Is supplied to. Then, the synthetic resin liquid and the curing agent respectively supplied are merged in the introduction part 6, and introduced into the mixing pipe 3 from the introduction part 6 by the supply pressure from the respective pumps. The synthetic resin liquid and the mixing agent introduced into the mixing pipe 3 are uniformly mixed by a static mixer 4 having a large number of fixed dividing blades axially provided inside the mixing pipe 3 to generate a synthetic resin liquid coating agent La. . At this time, the synthetic resin liquid coating agent La
Is a synthetic resin liquid coating agent in which mixing progresses as it is sequentially divided by the dividing blades in the static mixer 4 and the curing time is extremely fast. As the synthetic resin liquid coating agent La, polyurea resin or urea urethane resin having a fast curing time of several tens of seconds to 1 minute, or urethane resin having a slightly slow curing time is used.

Thereafter, the generated synthetic resin liquid coating agent La is sent to the nozzle 5 at the tip of the mixing pipe 3 by the supply pressure from the pump, and the horizontal portion on the steel girder is opened from the opening 5a of the nozzle 5 (shown in FIG. 2). Dripping toward Ka. here,
As shown in FIG. 6 (a), the opening 5 a of the nozzle 5 is provided on an inclined surface 5 b inclined with respect to the horizontal plane Ka on the steel girder, and has a vertically long slit shape opened toward the horizontal plane Ka. is doing. As a result, since the synthetic resin liquid coating agent flows out over the entire length of the slit, the horizontal surface K on the steel girder
The synthetic resin liquid coating agent La can be dripped on a in a wide range. As a result of being able to apply the synthetic resin liquid coating agent La broadly, a more uniform anticorrosion coating layer can be formed efficiently in a short time. This is particularly effective when the thickness of the anticorrosion coating layer is thin.

At the same time as the synthetic resin liquid coating agent La is flowing down, the slide cylinder 14 is driven to move the coating unit 2 through the rod 13 in the left-right direction X with a predetermined number of swings.
1, swing to X2. At the same time, the wheels 1 of the truck 15
5d to drive the carriage 15 in the longitudinal direction Y1, Y2 of the steel girder K.
The coating unit 2 is moved and moved on the guide rails 16 arranged in parallel with, and the coating unit 2 is displaced through the frame 10 in the longitudinal direction Y2 of the steel girder K at a predetermined moving speed. And
The synthetic resin liquid coating agent La is regularly run down on a horizontal surface Ka on the steel girder at a predetermined running pitch to form a horizontal surface Ka on the steel girder.
As shown in FIG. 4, the anticorrosion coating layer L having a predetermined thickness is diffused and cured by the viscosity of the resin over the entire area of
b is formed, and the horizontal surface Ka on the steel girder is subjected to anticorrosion treatment.

By doing so, depending on the length and width of the horizontal plane Ka on the steel girder and the thickness of the anticorrosion coating layer Lb to be formed, the amount of the synthetic resin liquid coating agent La flowing down and the shaking of the coating unit 2 are caused. The synthetic resin liquid coating agent La can be regularly flowed down to the horizontal surface Ka on the steel girder by adjusting the running pitch due to movement and movement, so that the thickness is uniform and the finished surface is smooth. The layer Lb can be formed and the anticorrosion treatment can be surely performed. Further, since the synthetic resin liquid coating agent La to be used has a high curing speed, the construction time can be shortened. Furthermore, synthetic resin liquid coating agent L
Since the anticorrosion coating layer Lb is formed on the horizontal surface Ka on the steel girder without scattering a, the construction environment can be improved.

FIG. 5 is a diagram for explaining the anticorrosion treatment method according to the present invention. In FIG. 5, K is a steel girder in an iron bridge,
Ka is a horizontal surface on the steel girder, and C is an abutment on which the steel girder K is made of a concrete material. W is a sleeper laid on the steel girder K, R is a rail connected to the sleeper, and G is a ballast portion provided with a ballast. Reference numeral 2 is the coating unit of the anticorrosion treatment apparatus 1 described above, and 10 is a frame of the anticorrosion treatment apparatus 1 supporting the coating unit 2. 20a, 20b
Is a jack for lifting the sleeper W and the rail R from the steel girder K.

FIG. 5A shows a state before the anticorrosion treatment is applied to the horizontal surface Ka on the steel girder. The plurality of sleepers W are in contact with the steel girder K without any gap. From this state, the jacks 20a, 20 are provided between the steel girder K and the rail R at a predetermined position.
Install b. Here, the jack 20a is installed on the right abutment C and the jack 20b is installed on the left abutment C. Then, raise the jacks 20a and 20b, and
As shown in (b), the sleeper W and the rail R are lifted from the steel girder K to provide a narrow gap S between the steel girder K and the sleeper W. At this time, the lifting amount of the sleepers W and the rails R is set to a small amount (for example, 4 cm) such that the coating unit 2 of the anticorrosion treatment apparatus 1 and the frame 10 are inserted.

Then, as shown in FIG. 5C, the coating unit 2 and the frame 10 are inserted into the gap S from the opposite side to the paper surface, and the opening 5a of the nozzle 5 of the coating unit 2 is inserted.
The synthetic resin liquid coating agent La is dripped from (illustrated in FIG. 2) toward the horizontal surface Ka on the steel girder. At this time, at the same time, the slide cylinder 14 in FIG. 1 is driven to swing the coating unit 2 through the rod 13 in the width direction of the steel girder K at a predetermined number of swings, and the carriage 15 is moved to the longitudinal direction of the steel girder K. On the guide rail 16 arranged parallel to the directions Y1 and Y2, the guide rail 16 is moved in the longitudinal direction Y2, and as shown in FIG.
The coating unit 2 is displaced in the longitudinal direction Y2 at a predetermined traveling speed via the frame 10. As a result, the synthetic resin liquid coating agent La can be regularly flowed on the horizontal surface Ka on the steel girder at a predetermined running pitch, and this is hardened to form the anticorrosion coating layer Lb from the right end of the steel girder K. go.

Then, as shown in FIG. 5E, the synthetic resin liquid coating agent La is applied to the left end of the steel girder K by the coating unit 2.
After performing the coating work of 1., the coating unit 2 and the frame 10 are removed from the narrow gap S between the steel girder K and the sleeper W to the other side with respect to the paper surface, and smooth and uniform over the entire horizontal surface Ka on the steel girder. The anticorrosion coating layer Lb having various thicknesses is formed to perform anticorrosion treatment. After that, lower the jacks 20a and 20b, and
As shown in (f), the rail R and the sleeper W are returned to the original state, and the work is completed.

By doing so, an anticorrosion coating layer Lb having a uniform thickness and a smooth finished surface is formed on the contact surface of the horizontal surface Ka on the steel girder with the sleeper W, and the anticorrosion treatment is surely performed. Can be applied. Further, if the amount of lifting of the sleepers W and the rails R is increased, the rails R will not return to the original state when the sleepers W and the rails R are lowered, and there is a problem that the trajectory must be corrected. Then, since the lifting amount of the sleeper W and the rail R may be a small amount such that the coating unit 2 and the frame 10 having a small thickness can be inserted, the track correction is performed after the sleeper W and the rail R are lowered onto the steel girder K. There is no need to perform it, and the construction time can be shortened.

In the embodiment described above, FIG.
As shown in (a), the nozzle 5 is provided with an inclined surface 5b which is inclined with respect to the horizontal plane Ka, and the inclined surface 5b is provided with the horizontal plane K.
Since the opening 5a opened toward a is provided, the horizontal plane K
The synthetic resin liquid coating agent La easily drips onto a, and since the opening 5a has a vertically long slit shape, the synthetic resin liquid coating agent La can be dripped on the horizontal surface Ka at once at a wide area. Therefore, even if the protrusion Q such as a rivet is present on the horizontal surface Ka, the entire protrusion can be uniformly coated with the synthetic resin liquid coating agent La to form an anticorrosion coating layer having a uniform thickness. . Also, the opening 5a
From the synthetic resin liquid coating agent L over the entire length of the slit
Since a flows out, the amount of displacement of the coating unit 2 can be increased and the construction time can be shortened.

However, the present invention is not limited to this, and as shown in FIG. 6 (b), it is a porous type nozzle 5 in which a plurality of openings 5a are vertically arranged on the inclined surface 5b. It may be. In addition, as shown in FIG.
The nozzle 5 may be provided with an opening 5a formed of a circular hole on a surface 5c perpendicular to the horizontal surface Ka. In addition, as the shape of the opening 5a, various shapes such as a horizontally long slit shape and an elliptical shape can be considered. Also, the opening 5a
The location for providing is not limited to the inclined surface 5b or the vertical surface 5c described above, and may be a surface facing the horizontal plane Ka. These are the amount of synthetic resin liquid coating liquid flowing and the direction of the liquid flowing,
Alternatively, it can be appropriately selected according to the environmental conditions such as wind and temperature during construction.

Further, in the above embodiment, the horizontal surface Ka on the steel girder is subjected to the anticorrosion treatment immediately after the sleepers W and the rails R are lifted. However, before the anticorrosion treatment, as shown in FIG. A wall body 19 formed by adhering members such as tapes is provided along both sides of the horizontal surface Ka on the girder, and the synthetic resin liquid coating agent La dripping on the horizontal surface Ka on the steel girder is on the steel girder. You may perform anticorrosion treatment so that it may not drip from the horizontal surface Ka. By doing so, the construction environment is improved and the synthetic resin liquid coating agent La
Can be used without waste and material cost can be reduced.

Further, as shown in FIG. 8 (a), the wall bodies 19 provided along both sides of the horizontal surface Ka on the steel girder are made into saucer-shaped wall bodies 19a, and droop down on the horizontal surface Ka on the steel girder. The synthetic resin liquid coating agent La is dripped onto the dish-shaped wall 19a and cured, and the horizontal surface K as shown in FIG.
You may form the anticorrosion coating layer Lb of the shape projected from a on both sides. By doing this, when it rains, the protruding portion Lc of the anticorrosion coating layer Lb plays a role of draining water, so that the rainwater on the anticorrosion coating layer Lb has a back surface K of the horizontal surface Ka.
It is possible to prevent it from flowing along the side of the steel girder K along the c.

Further, in the above-mentioned embodiment, the synthetic resin liquid coating agent La is regularly run down on the horizontal surface Ka of the steel girder at a predetermined running pitch, and diffused by the viscosity of the resin itself over the entire horizontal surface Ka on the steel girder. However, as shown in FIG. 9, at the tip of the nozzle 5 in the Y1 direction (the same as the Y1 direction in FIG. 1),
An air nozzle 30 that blows out air is attached through a fixture 31, and air is weakly blown from the opening 30a of the air nozzle 30 to the synthetic resin liquid coating agent La that has flowed down from the opening 5a. The diffusion of La into the horizontal surface Ka of the steel girder may be promoted. In this case, it is preferable that the air to be blown is a slight breeze or a gentle breeze, and the surface of the synthetic resin liquid coating agent La is slightly wavy. This is because if the air is blown too strongly, ripples will spread on the resin surface and the thickness of the anticorrosion coating layer Lb formed by curing the synthetic resin liquid coating agent La will not be uniform.

The reason why the air is blown onto the surface of the resin as described above is as follows. That is, when the resin is diffused only by the viscosity of the synthetic resin liquid coating agent La, when the viscosity of the resin increases due to the influence of temperature and humidity,
As shown in FIG. 10 (a), the synthetic resin liquid coating agent La that flows down entraps air at the turning back position of the swing of the coating unit 2, and as shown in FIG. There may be a state in which the pinhole 22 due to bubbles is generated in the coating layer Lb. Especially wide nozzle 5
It was found that the pinhole 22 is likely to be generated when the is rocked at a high speed. However, by providing the air nozzle 30 as described above and blowing air onto the resin surface, it is possible to promote the diffusion of the resin and prevent the pinholes 22 from being generated, and the thickness is always uniform and the finished surface is smooth. Thus, a good quality anticorrosion coating layer Lb can be formed.

Further, in the above embodiment, the thickness of the anticorrosion coating layer Lb to be formed can be adjusted by the amount of the synthetic resin liquid coating agent La flowing down and the pitch of the flowing down due to the swing and displacement of the coating unit 2. In addition to this, the thickness of the anticorrosion coating layer Lb can be adjusted by changing the temperature of the synthetic resin liquid coating agent La to adjust the viscosity.

Further, in the above embodiment, the synthetic resin liquid and the curing agent are uniformly mixed by the static mixer 4 in which a large number of fixed dividing blades are provided in the mixing tube 3 in the axial direction, and the synthetic resin liquid coating agent La is obtained. However, the present invention is not limited to this, and a rotary blade type mixer or the like may be used as long as it can uniformly mix the synthetic resin liquid and the curing agent.

In the above embodiment, the coating unit 2
As a moving body that moves in the front-back direction along a horizontal plane,
The trolley 15 that automatically travels by the motor 15e is given as an example, but the present invention is not limited to this, and a trolley that is moved by a winch as long as it can move the application unit 2 on a horizontal plane. May be used.

Further, in the above-mentioned embodiment, the case where the steel girder in the iron bridge is subjected to the anticorrosion treatment is given as an example, but the present invention is not limited to this, and it is possible to use it on a horizontal surface of a structure such as a building, a tunnel or an elevated structure. It can also be applied when anticorrosion treatment is applied. When anticorrosion treatment is applied to the floor of a building or the like, a small vehicle such as a forklift can be used as the moving body.

[0050]

EXAMPLE An example of carrying out the anticorrosion treatment method of the present invention using the anticorrosion treatment apparatus shown in FIGS. The horizontal surface to be subjected to anticorrosion treatment is a horizontal surface on a steel girder in a railway iron bridge, and has a steel girder length of 20 m and a steel girder width of 250 mm. The coating unit 2 is arranged on the horizontal surface of the steel girder, and the synthetic resin liquid coating agent mixed by the static mixer 4 in the mixing pipe is dripped from the nozzle 5. At this time, the resin temperature is 40 ° C., the resin viscosity is 1000 CPS, and the pouring amount is 0.5 liter / min. At the same time as the synthetic resin liquid coating material is dripped, the coating unit 2 is rocked at a rocking frequency of 50 times / minute according to the width of the horizontal plane, and the moving speed is 1 m /
The steel girder is displaced in the longitudinal direction by a minute, and the running pitch of the synthetic resin liquid coating agent is set to 20 mm. As a result of applying the anticorrosion treatment with the above settings, a uniform anticorrosion coating layer having a coating thickness of 2 mm was formed on the entire horizontal surface of the steel girder in 20 minutes of construction time.

[0051]

According to the present invention, an anticorrosion coating layer having a smooth finished surface and a uniform thickness can be formed on a horizontal surface of a structure such as a steel girder in an iron bridge to reliably perform anticorrosion treatment. In addition, the application environment can be improved without scattering of the coating agent, and the installation time can be shortened.

[Brief description of drawings]

FIG. 1 is a plan view showing an anticorrosion treatment apparatus according to the present invention.

FIG. 2 is a right side view showing the anticorrosion treatment apparatus according to the present invention.

FIG. 3 is a front view showing an anticorrosion treatment apparatus according to the present invention.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a diagram illustrating an anticorrosion treatment method according to the present invention.

FIG. 6 is an example of a nozzle in the anticorrosion treatment apparatus according to the present invention.

FIG. 7 is a cross-sectional view of essential parts in another example of the anticorrosion treatment apparatus according to the present invention.

FIG. 8 is a cross-sectional view of essential parts in another example of the anticorrosion treatment apparatus according to the present invention.

FIG. 9 is a left side view showing another example of the anticorrosion treatment apparatus according to the present invention.

FIG. 10 is a diagram illustrating generation of pinholes in an anticorrosion coating layer.

[Explanation of symbols]

1 Anticorrosion treatment equipment 2 Application unit 3 mixing tubes 5 nozzles 5a opening 7 Main agent supply source 8 Curing agent supply source 10 frames 13 rod 14 Slide cylinder 15 dolly 15a main body 15d wheels 16 Guide rail 30 air nozzles K steel girder Ka horizontal plane La synthetic resin liquid coating agent Lb Anticorrosion coating layer P pump R rail W sleepers X1 left direction X2 right direction Y1 longitudinal direction of steel girder Y2 Steel girder longitudinal direction

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B05D 7/24 301 B05D 7/24 301U E01D 1/00 E01D 1/00 E 22/00 22/00 A E04B 1/64 E04B 1/64 Z (71) Applicant 000207090 Daito Sangyo Co., Ltd. 1-15-1 Kawaramachi, Chuo-ku, Osaka-shi, Osaka Prefecture (72) Atsushi Ochi 1-16-shibata, Kita-ku, Osaka-shi, Osaka No. 1 Inside Hankyu Electric Railway Co., Ltd. (72) Inventor Souichi Ueda 1-16-1 Shibata, Kita-ku, Osaka City, Osaka Prefecture Within Hankyu Electric Railway Co., Ltd. (72) Koichi Nishiyama Matsuzaki-cho, Abeno-ku, Osaka-shi, Osaka Prefecture 2-2-2 Okumura-gumi Co., Ltd. (72) Inventor Yuji Yamamoto 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Okumura-gumi Co., Ltd. (72) Inventor Yuya Moriya Osaka-shi, Osaka 2-2-2 Matsuzaki-cho, Hino-ku Okumura-gumi Co., Ltd. (72) Inventor Masaaki Ohinata 7-6 Baishashi-cho, Tennoji-ku, Osaka-shi, Osaka Incorporated company Osaka Waterproofing Construction Company (72) Inventor Tomoyuki Yamanouchi Osaka Osaka-shi Tennoji-ku 7-6 Eisashi-cho, Inc. Incorporation company Osaka waterproofing construction company (72) Inventor Murato Uraya 2-10-3 Nagao Furniture Town, Hirakata City, Osaka Prefecture Daito Sangyo Co., Ltd. Research Institute (72) Inventor Sugiyama Tomoaki 2-10-3 Nagao Furniture Town, Hirakata-shi, Osaka Prefecture F-Term (Reference) 2D057 BA00 2D059 AA05 AA07 GG02 GG22 2E001 DH25 EA05 FA30 GA06 HD11 4D075 AC12 AC88 BB14Y CA33 DB02 DC05 EA05 EA27 EB32 EB32 EB32 4F041 AA08 AB01 BA42 CA02

Claims (10)

[Claims] 1. An anticorrosion treatment method in which a synthetic resin liquid coating agent obtained by mixing a synthetic resin liquid and a curing agent is applied to the horizontal surface of a structure to perform anticorrosion treatment, which is supplied from an external supply means. A mixing unit that internally mixes a synthetic resin liquid having a high curing rate and a curing agent to generate a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing pipe, and a coating unit, By arranging on the horizontal plane and swinging the coating unit in the left-right direction while moving the coating unit in the front-back direction along the horizontal plane, the synthetic resin liquid coating agent is dripped on the horizontal plane from the nozzle, A method for anticorrosion treatment on a horizontal surface, characterized in that the synthetic resin liquid coating agent is diffused on the horizontal surface to form a smooth and uniform thickness anticorrosion coating layer. 2. An anticorrosion treatment method for applying an anticorrosion treatment by applying a synthetic resin liquid coating agent, which is a mixture of a synthetic resin liquid and a curing agent, on a horizontal surface of a steel girder of a railway iron bridge. Lift the sleepers and rails laid on the horizontal surface of the girder, provide a narrow gap between the horizontal surface of the steel girder and the sleepers, and a synthetic resin liquid with a high curing rate supplied from an external supply means. A mixing tube that internally mixes a curing agent and a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing tube, a coating unit is inserted into the narrow gap, and While displacing the coating unit along the horizontal surface of the steel girder in the longitudinal direction of the steel girder while swinging in the width direction of the steel girder, by dropping the synthetic resin liquid coating agent from the nozzle, Spread the synthetic resin liquid coating agent on the horizontal surface of A horizontal anticorrosion treatment method characterized by forming a smooth and uniform anticorrosion coating layer. 3. An anticorrosion treatment method for applying anticorrosion treatment by applying a synthetic resin liquid coating agent obtained by mixing a synthetic resin liquid and a curing agent onto a horizontal surface having a slight width in a structure, which is supplied from the outside. Coating provided with a mixing pipe for internally mixing a synthetic resin liquid having a high curing rate and a curing agent supplied from a means to generate a synthetic resin liquid coating agent, and a nozzle provided at the tip of the mixing pipe. The unit is arranged on the horizontal plane, while the coating unit is moved in the front-back direction along the horizontal plane, the synthetic resin liquid coating agent is dripped from the nozzle onto the horizontal plane, whereby the horizontal plane is formed. A horizontal surface anticorrosion treatment method characterized in that a synthetic resin liquid coating agent is diffused to form a smooth and uniform thickness anticorrosion coating layer. 4. The horizontal surface anticorrosion treatment method according to claim 2 or 3, wherein wall bodies are provided along both sides of the horizontal surface so that the synthetic resin liquid dripping on the horizontal surface drips from the horizontal surface. A horizontal anticorrosion treatment method characterized by preventing it from falling. 5. The horizontal anticorrosion treatment method according to any one of claims 1 to 4, characterized in that air is blown onto the synthetic resin liquid coating agent drowning on the horizontal plane. Construction method. 6. A mixing tube for internally mixing a synthetic resin liquid having a high curing rate and a curing agent supplied from an external supply means, and a mixing pipe provided at the tip of the mixing pipe. A coating unit including a nozzle, a support unit that supports the coating unit, a moving body that connects the support unit to move the coating unit in the front-back direction, and swings the coating unit in the left-right direction. A drive unit, and while moving the coating unit supported by the support portion in the front-back direction along the horizontal plane of the structure by the moving body, while swinging in the left-right direction by the drive unit, The synthetic resin liquid coating material is dripped from the nozzle to diffuse the synthetic resin liquid coating material on the horizontal surface to form a smooth and uniform anticorrosion coating layer. A horizontal anticorrosion treatment device. 7. A mixing pipe for internally mixing a synthetic resin liquid having a high curing rate and a curing agent supplied from an external supply means, and a mixing pipe provided at the tip of the mixing pipe. A side surface of a steel girder in an iron bridge of a railroad, which includes a coating unit including a nozzle, a support portion that supports the coating unit, a main body portion that connects the support portion, and a wheel that is provided in the main body portion. A carriage that travels on a guide rail attached to the vehicle to displace the coating unit in the longitudinal direction of the steel girder, and a drive unit that swings the coating unit in the left-right direction, and is laid on the steel girder. The applicator unit to be inserted into a narrow gap between the sleeper and the horizontal surface on the steel girder,
While displacing in the longitudinal direction of the steel girder by the carriage along the horizontal surface of the steel girder, while swinging in the width direction of the steel girder by the drive unit, by dropping the synthetic resin liquid coating agent from the nozzle. A horizontal surface anticorrosion treatment device, characterized in that the synthetic resin liquid coating agent is diffused on the horizontal surface of the steel girder to form a smooth and uniform thickness anticorrosion coating layer. 8. A mixing pipe for internally mixing a synthetic resin liquid having a high curing rate and a curing agent supplied from an external supply means to produce a synthetic resin liquid coating agent, and a mixing pipe provided at the tip of the mixing pipe. A support unit that supports the coating unit; and a moving body that connects the support unit and moves the coating unit in the front-rear direction, and is supported by the support unit. While moving the coating unit in the front-rear direction along the horizontal plane having a small width in the structure by the moving body, the synthetic resin liquid coating agent is dripped from the nozzle, whereby the synthetic resin liquid is applied to the horizontal plane. An anticorrosion treatment apparatus for a horizontal surface, characterized in that a coating agent is diffused to form an anticorrosion coating layer having a smooth and uniform thickness. 9. The horizontal anticorrosion treatment device according to claim 6, wherein the opening of the nozzle allows the synthetic resin liquid coating agent to flow over a wide area on a horizontal plane. A horizontal anticorrosion treatment device having a vertically long slit shape. 10. The horizontal anticorrosion treatment apparatus according to claim 6, wherein the coating unit is an air nozzle for spraying air onto the synthetic resin liquid coating agent drowning on the horizontal plane. A horizontal surface anticorrosion treatment device comprising: