KR102671460B1 - Movable asphalt mixer device including horizontal paddlle shaft and asphalt mixture construction method using the same - Google Patents

Abstract

It is a device that can directly produce and install asphalt mixture on site. It relates to a vehicle-type asphalt mixer device using a horizontal stirring device or an indirect heating method and a method of constructing an asphalt mixture using the same.
In order to achieve the above problem, the first aspect of the present application includes an asphalt mixing mixer in which asphalt mixing materials are mixed, a heating device for interpolating and heating the asphalt mixing mixer, an inlet, an outlet, a power transmission device, and a mobile vehicle. In the mobile asphalt mixer device, the asphalt mixing mixer includes a filling tank as a space filled with asphalt mixing material, a paddle shaft formed horizontally inside the filling tank, and a long axis paddle and a short axis paddle located at regular intervals on the paddle shaft. It is characterized in that it includes a stirring device equipped with a paddle unit, wherein the inlet is located at the top of the asphalt mixing mixer and the asphalt mixed material is introduced, and the outlet is located at the lower rear of the asphalt mixing mixer to produce the mixed material. The asphalt mixture is discharged, and the power transmission device supplies rotational force to the stirring device inside the asphalt mixing mixer and provides power to open and close the inlet and outlet; The mobile vehicle may provide a mobile asphalt mixer device equipped with a loading box for mounting the asphalt mixing mixer, an indirect heating device, an inlet, an outlet, and a power transmission device.
According to this institute, the problems associated with the production and transportation of asphalt mixtures in conventional fixed production plants are solved, and asphalt paving construction in island areas or small-scale is carried out in a timely manner regardless of the production schedule of the asphalt mixture and restrictions on the travel distance of vehicles transporting the mixture. It can provide the advantage of easy quality and construction management of the asphalt mixture by preventing a rapid decrease in temperature of the asphalt mixture during winter or nighttime construction.
In addition, it is about a construction method for hot-in-place field production rather than hot-in-plant factory production, which can solve the problems of small-scale and long-distance production and supply and reduce energy consumption for transporting asphalt mixture. Quality and constructability can be improved by producing on-site and uniformly supplying a high-quality mixture.

Description

Mobile asphalt mixer device including horizontal paddle shaft and asphalt mixture construction method using the same {MOVABLE ASPHALT MIXER DEVICE INCLUDING HORIZONTAL PADDLLE SHAFT AND ASPHALT MIXTURE CONSTRUCTION METHOD USING THE SAME}

This application relates to a device for producing an asphalt mixture for asphalt paving and a method for constructing an asphalt mixture using the same. Specifically, it is a device that can directly produce and install asphalt mixture on site, using a horizontal stirring device or indirect heating method. It relates to a vehicle-type asphalt mixer device using a method and a method of constructing an asphalt mixture using the same.

Typically, asphalt mixture is a homogeneous paving agent, which refers to a uniformly sized mixture of asphalt binder, aggregate, additives, and filler. It is also called asphalt concrete. Most asphalt mixtures in Korea are produced using aggregate heating devices, mixing mixers, and aggregates. It is common to produce the mixture in a batch type of 2.5 tons at a time using fixed production facilities such as storage locations, filler silos, asphalt storage and heating tanks, etc.

In particular, in the case of small-scale asphalt road pavement maintenance, it has a direct and indirect effect on the occurrence of traffic accidents, so prompt maintenance must be accompanied. However, due to economic issues with the production and construction of asphalt mixtures, maintenance using existing fixed asphalt production facilities is required. There are limitations, and in the case of medium- and large-scale maintenance, even if mixtures produced in existing fixed production facilities are used, it is difficult to perform economical maintenance due to administrative procedures such as construction ordering and contracting processes.

This conventional construction method of asphalt mixture uses production equipment at an asphalt mixture production plant, heats aggregate, produces a mixture of heated asphalt, filler, color pigment, etc. in a tank, and transports it to the site by dump truck. Because the construction is done through at least about 15 processes, including laying and compacting with asphalt paver, there is a problem of consuming a very large amount of heat energy until the asphalt mixture is constructed.

In addition, because fixed asphalt production facilities are produced at a specific factory far from the construction site, there is a problem that the transportation distance to the construction site is long, and especially in winter, the temperature of the asphalt mixture drops, making construction very difficult. In addition, temperature control is difficult because most products requiring color are produced in small quantities, and like other products, when produced, aggregates of different specifications and black asphalt for road paving are mixed together, making it difficult to manage a homogeneous product due to the mixing of aggregates of different colors and sizes. There is a problem.

Recently, mobile asphalt production facilities have been developed to supply asphalt mixtures produced at work sites by manufacturing asphalt mixture production facilities in the form of trailers so that they can be moved, and research on them is being actively conducted.

For example, Republic of Korea Patent No. 10-0393257 (hereinafter referred to as 'Prior Art 1') relates to a 'mobile asphalt concrete manufacturing device', and in detail, the plant facility used for asphalt production is mounted on a trailer. In order to produce asphalt concrete by selecting, heating, and mixing the materials in the state, the aggregate storage unit, aggregate heater, vibrating screen, and mixer are mounted on each trailer, and the aggregate is classified according to a certain size through the aggregate storage unit. After being moved to the aggregate heater and dried, the aggregate is separated by size through a vibrating screen in a bucket elevator and dropped into an aggregate storage bin for storage. Then, the stored aggregate is supplied to the meter along the bucket elevator and then into the mixer. will be supplied.

However, the prior art 1 has a problem in that the mixer and the asphalt feeder are transported while mounted on separate trailers, and a separate bucket elevator with an inclined surface must be additionally installed to supply the mixer and asphalt to the mixer during installation. In addition, this prior art 1 not only requires a very long time to install and separate each equipment, but also has the problem of increasing equipment manufacturing costs and maintenance costs incurred during movement. Furthermore, since a bucket elevator with an inclined plane must be installed to supply the aggregate to the meter and mixer, it causes the installation area or volume to become very large, and because it is very long in terms of length, the transfer speed is slow, making it difficult to quickly reach the construction site. There is a problem that I cannot do.

In addition, the asphalt mixture mixing and transport equipment used domestically must be able to store more than 6 tons of the mixture and require thermal insulation equipment to reduce the temperature to 10 ℃ or less even after 4 hours using heat transfer oil, etc. However, rather than being developed domestically, On-site heating-mixing-transportation equipment (MCV), which relies on overseas imports and is widely used in the United States, is a large-scale equipment that processes 25 tons of mixture at once. The mixture transported to the site is reheated and remixed before being used as an asphalt paver. It is only used to transport the mixture, and since there is no aggregate heating, dust collection equipment, and mixture transport equipment, it is still difficult to produce the asphalt mixture on site.

In relation to the existing problems, this institute seeks to provide a vehicle-type asphalt mixer using an indirect heating method and a construction method of asphalt mixture using the same so that on-site production of asphalt mixture is suitable for domestic conditions and enables smooth on-site supply.

In addition, in terms of asphalt paving, we aim to provide asphalt mixtures through hot-in-place production rather than factory production (Hot-in-plant), thereby smoothly supplying them to the site regardless of transport capacity limitations.

In order to achieve the above problem, the first aspect of the present application includes an asphalt mixing mixer in which asphalt mixing materials are mixed, a heat supply device for interpolating and heating the asphalt mixing mixer, an inlet, an outlet, a power transmission device, and a mobile vehicle. In the mobile asphalt mixer device, the asphalt mixing mixer includes a filling tank as a space filled with asphalt mixing material, a paddle shaft formed horizontally inside the filling tank, and a long axis paddle and a short axis paddle located at regular intervals on the paddle shaft. It is characterized in that it includes a stirring device equipped with a paddle unit, wherein the inlet is located at the top of the asphalt mixing mixer and the asphalt mixed material is introduced, and the outlet is located at the lower rear of the asphalt mixing mixer to produce the mixed material. The asphalt mixture is discharged, and the power transmission device supplies rotational force to the stirring device inside the asphalt mixing mixer and provides power to open and close the inlet and outlet; The mobile vehicle may provide a mobile asphalt mixer device equipped with a loading box for mounting the asphalt mixing mixer, an indirect heating device, an inlet, an outlet, and a power transmission device.

In one embodiment of the present application, the filling tank may be a U-shaped filling tank, but is not limited thereto.

In one embodiment of the present application, the paddle unit may be formed by connecting paddle units staggered at 90° intervals, but is not limited thereto.

In one embodiment of the present application, the paddle unit includes a long-axis paddle and a short-axis paddle formed on a paddle shaft, and the long-axis paddle and the short-axis paddle may include a bar-shaped paddle wing at the end, but is limited thereto. That is not the case.

In one embodiment of the present application, the paddle blades of the long axis and the paddle blades of the short axis may be formed inclined at an angle of 10 to 30°, respectively, and may be inclined in opposite directions, but are not limited thereto.

In one embodiment of the present application, the heat supply device includes an indirect heating device upper housing into which the asphalt mixing mixer is inserted and seated; An indirect heating device heat transfer unit filled with heat transfer fluid; A heating device connected to the indirect heating device heat transfer unit; And, an indirect heating device body housing that is thermally connected to the upper housing of the indirect heating device to form a space for the heat transfer part of the indirect heating device, but is not limited thereto.

In one embodiment of the present application, the indirect heating device includes: a hollow cylindrical combustion chamber located inside the heat transfer portion of the indirect heating device and having a through hole; And, a burner connected to the combustion chamber and formed on the outside of the indirect heating device body housing, but is not limited thereto.

In one embodiment of the present application, the indirect heating device is formed as a horizontal partition between the upper housing of the indirect heating device and the left and right walls of the body housing of the indirect heating device, and is installed in a zigzag shape to form a heat circulation path. It may additionally include a circulation barrier, but is not limited thereto.

In order to achieve the above task, the second aspect of the present application includes: S1) a floor plate cleaning step of cleaning up foreign substances on the floor; S2) Adhesive application step of applying a primer or tack coating agent to the upper part of the floor plate; S3) an asphalt concrete layer forming step of laying an asphalt mixture using the mobile asphalt mixer device according to the first aspect of the present application. It is possible to provide an asphalt mixture construction method, including:

According to this institute, the problems associated with the production and transportation of asphalt mixtures in conventional fixed production plants are solved, and asphalt paving construction in island areas or small-scale is carried out in a timely manner regardless of the production schedule of the asphalt mixture and restrictions on the travel distance of vehicles transporting the mixture. It can provide the advantage of easy quality and construction management of the asphalt mixture by preventing a rapid decrease in temperature of the asphalt mixture during winter or nighttime construction.

In addition, it is about a construction method for hot-in-place field production rather than hot-in-plant factory production, which can solve the problems of small-scale and long-distance production and supply and reduce energy consumption for transporting asphalt mixture. Quality and constructability can be improved by producing on-site and uniformly supplying a high-quality mixture.

1 is a side reference view of a mobile asphalt mixer device in one embodiment of the present application.
Figure 2 is a plan reference diagram according to Figure 1
Figure 3 is a rear reference view according to Figure 1
Figure 4 is a side reference view of the asphalt mixing mixer viewed from the inside excluding the side wall.
Figure 5 is a plan reference diagram according to Figure 4
Figure 6 is a rear reference view according to Figure 4
7 is a conceptual diagram showing the twist angle of the paddle blade of the paddle unit according to an embodiment of the present application.
Figure 8 is a side view of the heating device viewed from the inside excluding the side wall.
Figure 9 is a plan reference diagram according to Figure 8
Figure 10 is a rear reference view according to Figure 8
Figure 11 is a block diagram of an asphalt mixture construction method in one embodiment of the present application.

Hereinafter, the accompanying drawings and implementation examples or examples will be described in detail so that a person with average knowledge in the technical field belonging to the present application can easily reproduce the present application.

The present application may be implemented in many different forms and is not limited to the implementation examples and examples described herein.

Throughout the specification of the present application, when a part “includes” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

Throughout the specification of the present application, when a part is said to be “connected” to a certain component, this means that even if there is a part where other components can be added, the principle of solving the problem may be substantially the same as the substantially combined one. It includes the meaning of being included or indirectly connected.

Throughout this specification, when a step is said to be located “before” or “after” another step, this includes not only cases where a step is directly linked to another step, but also cases where another step exists between the two steps. .

As used throughout the specification, the terms “about,” “substantially,” and the like are used to mean at or close to that value when manufacturing and material tolerances inherent in the stated meaning are given, and are used in the understanding of the present invention. Precise or absolute figures are used to assist in preventing unscrupulous infringers from taking unfair advantage of the stated disclosure.

The term “step of” or “step of” used throughout the specification does not mean “step for.”

As terms used herein, 'front' refers to the direction looking from the driver's seat of the moving vehicle, 'back' has the same meaning as 'rear' and refers to the direction looking toward the rear of the moving vehicle, and 'side' refers to the direction looking toward the rear of the moving vehicle. This is the direction viewed from the side, and 'flat' means looking at the moving vehicle from above.

FIG. 1 is a side reference view of a mobile asphalt mixer device according to an embodiment of the present application, FIG. 2 is a plan reference view according to FIG. 1, and FIG. 3 is a rear reference view according to FIG. 1, FIG. 1 to FIG. 3 If the present application is described in detail with reference to the present application, the first aspect of the present application includes an asphalt mixing mixer 100 in which asphalt mixing materials are mixed, a heat supply device 200 for interpolating and heating the asphalt mixing mixer, an inlet 300, and an outlet. In the mobile asphalt mixer device including (400), a power transmission device (500), and a mobile vehicle (600), the asphalt mixing mixer (100) includes a filling tank (120) as a space filled with asphalt mixing material. A stirring device provided with a paddle shaft 112 formed horizontally inside the filling tank and a paddle unit 111 positioned at regular intervals on the paddle shaft and formed of a long-axis paddle 111-1 and a short-axis paddle 111-2. It is characterized in that it includes (110), wherein the inlet 300 is located at the upper part of the asphalt mixing mixer 100 into which the asphalt mixing material is input, and the outlet 400 is located at the rear of the asphalt mixing mixer 100. Located at the bottom, the mixed asphalt mixture is discharged, and the power transmission device 500 supplies rotational force to the stirring device 110 inside the asphalt mixing mixer and provides power to open and close the inlet and outlet; The mobile vehicle 600 may provide a mobile asphalt mixer device equipped with a loading box for mounting the asphalt mixing mixer, an indirect heating device, an inlet, an outlet, and a power transmission device.

As a feature of the present application, the asphalt mixing mixer 100 is provided with a stirring device 110 including a paddle unit 111 on a paddle shaft 112 formed horizontally inside, and raw materials for producing an asphalt mixture are input. It plays a role in performing the preheating process of raw materials and the process of mixing raw materials uniformly and stably.

Figure 4 is a side view of the asphalt mixing mixer viewed from the inside excluding the side wall, Figure 5 is a plan view according to Figure 4, and Figure 6 is a rear view according to Figure 4, with additional reference to Figures 4 to 5, the present application in detail. To explain, in one embodiment of the present application, the stirring device 110 preferably includes a paddle unit 111 having a rod shape or rod shape within the asphalt mixing mixer 100, which has a batch reactor structure.

Since the screw-type stirring device discharges in one direction, there may be a problem with uniform mixing, and the rotating vane-type stirring unit may still have a problem in uniformly mixing the mixture inside the asphalt mixing mixer (100) as a whole. , it is preferable to use a stirring device 110 including a paddle unit 111 to uniformly mix the asphalt mixture. In addition, the mixing method using a vertical shaft not only interferes with the input of raw materials from the top and causes damage to the paddle due to the input, but also has to be installed in a tower type on a moving vehicle, which increases the center of gravity and causes the vehicle to move. Since there may be a problem of this being overturned, the present institution is characterized by solving this problem by adopting a method using a horizontal paddle shaft.

In one embodiment of the present application, the asphalt mixing mixer 100 includes a filling tank 120 as a space filled with asphalt mixing material; And stirring provided with a paddle shaft 112 formed horizontally inside the filling tank and a paddle unit 111 positioned at regular intervals on the paddle shaft and formed of a long-axis paddle 111-1 and a short-axis paddle 111-2. It may include, but is not limited to, the device 110.

The filling tank 120 is a place where the asphalt mixed material is filled and serves as a reactor for the mixed mixture. In one embodiment of the present application, the filling tank 120 may be a U-shaped filling tank. , but is not limited to this. Here, the 'U' shape means the appearance of the outer periphery when viewed from the rear as shown in Figure 6, and the filling tank is formed with a hollow space (120-1), and a paddle is placed in the horizontal direction of this empty space. A shaft 112 is provided.

The paddle shaft 112 formed horizontally inside the filling tank is provided with paddle units 111 formed of a long-axis paddle 111-1 and a short-axis paddle 111-2 at regular intervals, through which an asphalt mixture is manufactured. In the process, it helps to form vortices in the mixture fluid, enabling uniform mixing.

Furthermore, in one embodiment of the present application, the paddle unit 111 may be formed by connecting paddle units staggered at 90° intervals, but is not limited thereto. To be described in more detail with reference to FIG. 4 or FIG. 5 , when one paddle unit 111(a) is configured in the vertical direction as in FIG. 4, the next paddle unit 111(b) is It is configured in a horizontal direction, whereby the long axis paddles 111-1(a) and 111-1(b) are sequentially 90° with the adjacent short axis paddles 111-2(a) and 111-2(b). They are staggered at intervals, giving the effect of uniformly and effectively mixing the asphalt mixed materials in the filling tank 120 of the asphalt mixing mixer 100.

FIG. 7 is a conceptual diagram showing the twisting angle of the paddle wing of the paddle unit according to an embodiment of the present application. If the present application is described in detail with reference to FIG. 7, in an embodiment of the present application, the paddle unit 111 is a paddle. It includes a long-axis paddle 111-1 and a short-axis paddle 111-2 formed on a shaft, wherein the long-axis paddle and the short-axis paddle include a bar-shaped paddle blade 113 at the end, and the long-axis paddle blade 113 The angle θ1 of -1) and the angle θ2 of the minor paddle blade 113-2 are each inclined at 10 to 30°, and may be inclined in opposite directions.

The angle θ1 of the long-axis paddle blade 113-1 and the angle θ2 of the short-axis paddle blade 113-2 are in opposite directions. For example, if the angle values are the same, θ2 = -θ1 There may be a relationship between When the long-axis paddle blade and the short-axis paddle blade are bent at a certain angle in opposite directions, the mixture stirred by the long-axis paddle (111-1) and the mixture stirred by the short-axis paddle (111-2) undergo shear agitation. Therefore, asphalt mixed materials such as aggregate and binder filler can be heated and stirred evenly.

Meanwhile, the long-axis paddle blades 113 are installed to be spaced apart from each other by, for example, 5 to 15 mm, corresponding to the maximum aggregate size mixed from the bottom surface of the asphalt mixing mixer, to prevent the paddle blades 113 from being caught in the filling tank 120. can be prevented.

The heat supply device 200 is a device that interpolates the asphalt mixing mixer 100 and heats it. The heat supply method can be used alone or in combination with the direct heating method and the indirect heating method. For example, the direct heating method is electric. A method in which a heating wire using a heat wire is captured outside the filling tank of the mixing mixer and heat energy by the electric heating wire is transferred to the mixing mixer may be used, but is not particularly limited.

However, in addition to safety issues due to the flammability of asphalt mixtures, indirect heating devices can be used as a method to quickly and continuously raise and maintain temperature even in winter.

FIG. 8 is a side view of the heating device viewed from the inside excluding the side wall, FIG. 9 is a plan view according to FIG. 8, and FIG. 10 is a rear view according to FIG. 8. When the present application is described in detail with reference to FIGS. 8 to 10, , In one embodiment of the present application, an indirect heating device upper housing (210; see Figure 10) into which the asphalt mixing mixer is interpolated and seated; An indirect heating device heat transfer unit 220 filled with a heat transfer fluid; A heating device 230 connected to the indirect heating device heat transfer unit; And, an indirect heating device body housing 240 that is thermally connected to the indirect heating device upper housing 210 to form a space for the indirect heating device heat transfer unit. It may be an indirect heating device 200 including, but is limited to this. That is not the case.

The indirect heating device 200 includes an indirect heating device upper housing 210 (see Figure 10) into which the asphalt mixing mixer is inserted and seated; An indirect heating device heat transfer unit 220 filled with a heat transfer fluid; A heating device 230 connected to the indirect heating device heat transfer unit; And, an indirect heating device body housing 240 that is thermally connected to the indirect heating device upper housing 210 to form a space for the indirect heating device heat transfer unit, but is not limited thereto.

As a feature of the present application, the indirect heating device 200, which is an embodiment of the present application, does not directly contact heat with the asphalt mixture materials such as 'aggregate' and 'binder' inside the asphalt mixing mixer 100, so the burner It prevents safety problems that may arise from flames or direct heating methods, and in particular, provides the advantage of being able to use recycled aggregate for recycling because the aggregate does not come into direct contact with the flame of the burner.

The indirect heating device 200 functions to increase the temperature of the asphalt mixing mixer 100 by indirect heating, and the same U-shaped asphalt mixing mixer in FIG. 6 is interpolated into the upper housing 210 of the indirect heating device. Because of the relationship, as shown in FIG. 10, the asphalt mixing mixer 100 may also have a U-shaped shape.

The indirect heating device heat transfer unit 220 is a space formed by combining the indirect heating device upper housing 210 and the indirect heating device body housing 240, and the space is filled with a heat transfer fluid, and the heat transfer fluid is gas or A variety of liquid media can be used and are not particularly limited. The indirect heating device body housing 240 can be manufactured from two layers of hot rolled steel sheets with a thickness of 9 to 12 mm at 100 mm intervals for durability and insulation, and additionally, a flame-retardant inorganic insulation material 241 is placed around the indirect heating device body housing. Thermal efficiency can be increased by installing.

The heating device 230 performs an indirect heating role of supplying heat to the indirect heating device heat transfer unit. In one embodiment of the present application, the heating device 230 is the indirect heating device heat transfer unit 220. Located in, a hollow cylindrical combustion chamber (231) formed with a through hole (231-1); And, a burner 232 connected to the combustion chamber and formed on the outside of the indirect heating device body housing: but is not limited thereto. The heat generated in the cylindrical combustion chamber serves to evenly transfer heat to a distant location from the burner 232 through the through hole 231-1, thereby contributing to maintaining uniform isotherm of the indirect heating device 200. there is.

The burner 232 may use various burners such as an O'Neill burner, microwave, or electric burner, and is not particularly limited.

And in order to maximize heat transfer efficiency, in one embodiment of the present application, the indirect heating device 230 includes the indirect heating device upper housing 210 and the left and right walls 240-1 of the indirect heating device body housing. ) It is formed as a horizontal partition between, and may additionally include, but is not limited to, a circulation path partition wall 250 that is installed in a zigzag shape to form a heat circulation path 260.

The heat circulation path 260 formed by the circulation path partition wall 250 is a heat circulation path formed in a zigzag shape in which the heat transferred through the heating device 230 is not limited to the lower part of the indirect heating device heat transfer unit 220. By increasing the contact time with heat through (260), sufficient heat is transferred to the asphalt mixing mixer (100) to increase thermal efficiency.

Meanwhile, the internal pressure can be adjusted by discharging gas through the outlet 270 at the top of the heat circulation furnace 260.

FIG. 11 is a block diagram of an asphalt mixture construction method according to an embodiment of the present application. If the present application is described in detail with reference to FIG. 11, the second aspect of the present application is S1) floor plate cleaning step of cleaning up foreign substances on the floor. ; S2) Adhesive application step of applying a primer or tack coating agent to the upper part of the floor plate; S3) an asphalt concrete layer forming step of forming an asphalt concrete layer using the mobile asphalt mixer device of the first aspect of the present application. It is possible to provide an asphalt mixture construction method including:

The S1) floor plate cleaning step is a step of cleaning up foreign substances on the floor to be constructed and reinforcing deteriorated areas. For example, blasting, water jetting, or dust collection devices are used to remove laitance, rust, etc. from the base of the structure. It can remove foreign substances and keep the surface dry.

The adhesive application step S2) is a step of applying a primer or tack coating agent to the upper part of the floor plate. For example, the solid content of organic additives such as asphalt, process oil, and rubber and inorganic additives is 70% or more, and dries within 1 hour. It can be applied using an asphalt-based or resin-based adhesive, and the adhesive preferably has a softening point lower than about 160 to 220°C, which is the laying temperature at which the asphalt composition to be laid on top is laid.

The asphalt concrete layer forming step S3) is a step of laying an asphalt mixture, and can be provided at the construction site through the mobile asphalt mixer device of the first aspect of the present application.

In one embodiment of the present application, the asphalt concrete layer forming step S3) is a step of laying an asphalt mixture, and can be provided at the construction site through the mobile asphalt mixer device of the first aspect of the present application.

In one embodiment of the present application, the asphalt concrete layer forming step S3) first goes through the aggregate heating step (S3-1) using the mobile asphalt mixer device of the first side of the present application. In detail, the internal temperature of the asphalt mixing mixer 100 of the mobile asphalt mixer device of the first aspect of the present application is maintained at 250 ° C. or higher through an indirect heating device 200 as a heat supply device, for example, and the aggregate is stored on a wireless scale. It is characterized by adding the aggregate while recording it and going through the process of stirring for about 1 to 2 hours until the surface temperature of the aggregate reaches about 200 ~ 220 ℃. It is desirable to dry the aggregate so that the surface temperature is above 170℃ or the surface relative humidity is below 1%.

Going through this S3-1) aggregate heating step, the aggregate must first be heated at a high temperature to remove moisture or foreign matter from the surface of the aggregate, and in the step of adding molten binder or filler to follow in the subsequent process, an asphalt mixing mixer ( 100) can reduce heat loss and prevent the binder from flowing or clumping.

The wireless scale is a portable wireless hanging electronic scale equipped with a hook. When mixing aggregate, asphalt binder, or filler in the field, the weight can be measured with a crane and immediately printed and recorded with a wireless printer to manage the composition ratio of the mixture.

Independently of the above S3-1) aggregate heating step, a binder melting step (S3-2) is performed to produce a molten binder by heating the asphalt binder at the construction site, using the existing hot-in-plant method. Instead, the molten binder can be manufactured by melting and stirring the asphalt binder at a temperature of 160 ℃ or higher, preferably 160 to 220 ℃, using a separate indirect heating melting device.

The separate molten binder prepared in this way is each added to the mobile asphalt mixer device on the first side of the present invention with the heated aggregate in step S3-1) while recording the weight with a wireless scale together with the filler, and sheared and stirred for about 30 minutes or more. This is performed to produce an asphalt mixture (S3-3).

The asphalt mixture prepared through the step S3-3) is laid using a finisher on the surface where the adhesive application step of S2) has been completed to form an asphalt concrete layer (S-3).

Although the present application has been described above with reference to implementation examples or examples, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true scope of technical protection of the present application should be determined by the technical spirit of the attached patent claims.

Claims (9)

In the mobile asphalt mixer device including an asphalt mixing mixer in which asphalt mixing material is mixed, a heat supply device for interpolating and heating the asphalt mixing mixer, an inlet, an outlet, a power transmission device, and a mobile vehicle,
The asphalt mixer,
A space where asphalt mixed materials are filled, including a filling tank and
Characterized in that it comprises a stirring device provided with a paddle shaft formed horizontally inside the filling tank and a paddle unit positioned at regular intervals on the paddle shaft and formed of a long-axis paddle and a short-axis paddle,
The inlet is located at the top of the asphalt mixing mixer and the asphalt mixing material is introduced,
The outlet is located at the rear lower part of the asphalt mixing mixer, and the resulting mixed asphalt mixture is discharged,
The power transmission device supplies rotational force to the stirring device inside the asphalt mixing mixer and provides power to open and close the inlet and outlet;
The mobile vehicle is equipped with a loading box for mounting the asphalt mixing mixer, indirect heating device, inlet, outlet, and power transmission device,

The filling tank is a U-shaped filling tank,
The paddle unit is formed by connecting paddle units staggered at 90° intervals,
The paddle unit includes a long-axis paddle and a short-axis paddle formed on a paddle shaft, and the long-axis paddle and the short-axis paddle include rod-shaped paddle wings at their ends,
The paddle blades of the long axis and the paddle blades of the short axis are each inclined at an angle of 10 to 30°, and are inclined in opposite directions,

The heat supply device is,
An upper housing of an indirect heating device into which the asphalt mixing mixer is inserted and seated; An indirect heating device heat transfer unit filled with heat transfer fluid; A heating device connected to the indirect heating device heat transfer unit; And, an indirect heating device body housing that is thermally connected to the upper housing of the indirect heating device to form a space for the heat transfer part of the indirect heating device,

The indirect heating device,
a hollow cylindrical combustion chamber located inside the indirect heating device heat transfer unit and having a through hole; And, a burner connected to the combustion chamber and formed on the outside of the indirect heating device body housing,

The asphalt mixing mixer heats the aggregate introduced inside while maintaining the internal temperature at 250°C or higher through the indirect heating device, and stirs for about 1 to 2 hours until the surface temperature of the aggregate reaches 200 to 220°C. after,
A molten binder and filler melted and heated to 160 to 220 ° C are received and heat is supplied through the indirect heating device and stirred.

Mobile asphalt mixer unit.
delete delete delete delete delete delete According to claim 1,
The indirect heating device,
It is formed as a horizontal partition between the upper housing of the indirect heating device and the left and right walls of the body housing of the indirect heating device, and further includes a circulation path partition wall installed in a zigzag shape to form a heat circulation path,
Mobile asphalt mixer unit.
S1) Floor cleaning step of cleaning up foreign substances on the floor;
S2) Adhesive application step of applying a primer or tack coating agent to the upper part of the floor plate;
S3) an asphalt concrete layer forming step of laying an asphalt mixture using the mobile asphalt mixer device of claim 1 or 8, comprising:
Asphalt mixture construction method.