KR102648586B1 - Spreading attachment and solidfier spreader including the same, solidfier spreading method and surface solidification method using the same - Google Patents

Abstract

The present application relates to a laying attachment, a solid fire laying device including the same, a solid fire laying method using the same, and a surface layer solidification method. The laying attachment of the present application includes a connector provided to be mounted on the arm of the excavator; and a buffer hopper that stores the powder solidified material and has a discharge port formed toward the soil side, wherein the buffer hopper temporarily stores the powder solidified material supplied from the solidified material storage device, and the installation attachment is oriented in the working direction. As it moves, the solidified material stored inside can be discharged toward the soil.

Description

Installation attachment, solid fire installation device including the same, solid fire installation method using the same, and surface solidification method {SPREADING ATTACHMENT AND SOLIDFIER SPREADER INCLUDING THE SAME, SOLIDFIER SPREADING METHOD AND SURFACE SOLIDIFICATION METHOD USING THE SAME}

This application relates to a laying attachment, a solid fire laying device including the same, a fire laying method using the same, and a surface solidification method.

Soft ground refers to ground where the required bearing capacity cannot be secured or ground constants are not satisfied due to the low strength of the soil or rock inside the ground, which can cause uneven settlement and severe displacement. In the case of soft ground, stability problems may occur when loading the load of a building, etc. on the ground, so it is necessary to improve the soft ground, which does not have sufficient bearing capacity, to the point where the load of a building, etc. can be loaded on it.

To improve the bearing capacity of soft ground, various methods can be used, such as removing moisture in the ground or replacing the soil of the ground. However, in the case of the conventional replacement method, the soil of the soft ground is replaced using loamy soil or aggregate to secure bearing capacity. It was at that level. Accordingly, a surface solidification method was developed to improve the strength of the soil by solidifying the soil in the soft ground to reduce the amount of sand by improving the original soil in the field. Surface solidification can secure bearing capacity by mixing the base soil with solidification material and solidifying it through chemical action. In other words, the surface solidification method is a method of securing the bearing capacity of the ground by performing solidification work on a large area parallel to the surface layer at a depth of 1 m to 2 m below the ground.

Meanwhile, in the process of mixing the solidification material with the base soil, constant mixing, homogeneous stirring, and compaction are important tasks for surface solidification. If too much solidification material is mixed, economic efficiency decreases, and if too little is mixed, the strength of the solidified ground decreases, and if the solidification material is irregularly mixed with the original soil, defects occur in the solidified ground. In addition, if homogeneous mixing is not achieved, the water content of the soft ground is not adjusted to the optimal water content for compaction, resulting in clumping due to the soil's adhesive force. Such non-homogeneous agglomerated samples are easily dislodged by external shock after curing, causing quality deterioration. Furthermore, compaction work, which increases unit weight by increasing the density and strength between particles by expelling air in the soil without changing the water content of the soil, can be performed using voltage, vibration, impact, or traction compaction methods, including compaction method and number of compaction times. , the degree of compaction work may vary depending on the compaction thickness, and the equipment used for compaction work is not effective above a certain thickness, so the compaction thickness in the furnace body is limited to 50 cm or less in typical specifications.

In addition, when stirring the raw soil, flying dust, which is a general term for dust dispersed in the air without a regular outlet, may be generated. Flying dust is powder-like particles that can float in the air for a long time, adversely affecting the surrounding environment. In the case of solidification material, it has a size of 1μm to 150μm, so it is required to minimize flying dust during surface solidification work.

In the conventional surface solidification, an excavator excavates the raw ground soil to the depth required for surface solidification, moves it to the side and stacks it, mixes the solidification material with the piled raw soil, and then mixes the mixed solidification material and the original ground soil several times using an excavator. Stir. Afterwards, the solidified soil is moved to its original location to pile up about 50cm, compaction is performed, and this process is repeated to solidify the surface layer to the required depth. However, this method of surface solidification is impossible to prevent the solidification material and soil from scattering, and there are problems in that mixing and homogeneous mixing of the solidification material and the original ground soil is impossible, and additional transportation by separate equipment such as a dozer is required. There is.

In addition, the method of excavating the soil, putting the solidifying material in a ton bag, and then turning over and mixing the solidifying material and soil with equipment such as an excavator is to perform solidification work by excavating and transporting the soil from the original location to a separate work location. Ton bag must be used. It is inevitable that solidified fire material will scatter during work. In addition, since it is impossible to mix soil and solidification material at a certain ratio and stir them homogeneously, there is a disadvantage that the ratio of solidification material has to be increased to secure the ground bearing capacity for safety.

In addition, when using a conventional fixed soil agitator or a self-propelled soil agitator, there is an advantage in that it is possible to mix and homogenize the solidification material and the original soil and prevent scattering, but it requires a lot of additional equipment such as an excavator and a dozer in addition to the soil agitator. There is a problem of excavating the original soil, transporting it to the place where the agitator is located, and supplying the original soil continuously. Furthermore, the solidified soil produced in the agitator must be transported back to the original ground and compacted. Due to the above process, there are disadvantages that a lot of transportation costs are required due to equipment movement, a lot of time is required for surface solidification, a large working area is required on site, and the method of supplying solidification material is limited to ton bags, resulting in ton bag packaging costs and waste. There is a problem with additional processing costs.

On the other hand, when carrying out surface solidification work in soft ground, it is necessary to consider the working environment of the soft ground. If equipment is entered for solidification work when the ground support capacity is insufficient, it may be difficult to move the equipment or cave in and proceed with the work. I can't. Even if the equipment is capable of running, efficient work is impossible due to limitations in filling solidification material, rotating the equipment, and conducting systematic curing. When attempting to stir or excavate the original soil using a conventional excavator, the wheels of the excavator may fall into the soil due to insufficient ground pressure, resulting in malfunction of the equipment, and in severe cases, surface solidification work may become impossible.

The surface solidification method of soft ground to prevent scattering of powdered solidified material disclosed in Korean Patent No. 10-2306793 proposes a different solidified material supply method for the purpose of excluding the solidified material supply method by tone bag, but the solidified material supply method is It must be accompanied by a separate orbital transport vehicle for agitation, and must be laid by this orbital transport vehicle close to the solidification location for solidification placement. In soft ground with insufficient bearing capacity, securing a transport route through which separate transport vehicles can enter and exit acts as a factor that hinders work efficiency. In addition, the prior art adopts a spindle-less screw conveyor rather than a fixed screw conveyor because the solidification work speed and entry conditions must be taken into consideration. The spindle-less screw conveyor solidifies the solidification material by rotating a spiral screw with an empty center at high speed. Because it is a method of transferring, the discharge speed of the solidified material is very fast. Therefore, there is a high possibility that solidified fire will scatter from the discharge port. In addition, it is intended to achieve constant rate agitation by setting a certain section of soil and laying a certain amount of solidification material, but no measuring method was provided. As a normal weighing method, load cells, flow meters, and weighing chambers can be used, but this has the problem of requiring separate equipment to move the weighing device for continuous solidification.

Therefore, in the process of laying the solidified material in the soil, a solidified material laying device, a solidified material laying method, and a surface solidification method that can mix the solidified material at a fixed rate and prevent scattering are required.

The technology behind this application is disclosed in Korean Patent No. 10-2306793.

The present application is intended to solve the problems of the prior art described above, and the present application provides a laying attachment, a solidifying material laying device, a solidifying material laying method, and a surface layer for laying powdery solidified material in the soil at a certain ratio and preventing scattering of the solidified material. The purpose is to provide a solidification method.

In addition, the purpose of the present application is to provide a laying attachment, a solidifying material laying device, a solidifying material laying method, and a surface layer solidification method that can perform preliminary agitation by a trencher that forms a trench in the soil when laying solidified material.

In addition, this center provides a laying attachment, a solidifying material laying device, a solidifying material laying method, and a surface solidification method that enable continuous supply of solidified material through a sealed transportation system through hoses, buffer hoppers, filters, etc., rather than through tonbag transportation. The purpose is to

In addition, the purpose of this application is to provide a solidified fire laying device, a solidified fire laying method, and a surface solidification method that enable work to be done at a distance from a location where bearing capacity is secured for soft ground where equipment entry is difficult.

However, the technical challenges sought to be achieved by the embodiments of the present application are not limited to the technical challenges described above, and other technical challenges may exist.

As a technical means for achieving the above-described technical problem, a laying attachment according to an embodiment of the present application includes a connector provided to be mounted on the arm of the excavator; and a buffer hopper that stores the powder solidified material and has a discharge port formed toward the soil side, wherein the buffer hopper temporarily stores the powder solidified material supplied from the solidified material storage device, and the installation attachment is oriented in the working direction. As it moves, the solidified material stored inside can be discharged toward the soil.

In addition, according to an embodiment of the present application, the installation attachment is connected to an upper surface plate, a distribution structure formed on the lower side of the upper surface plate to distribute the load acting on the excavator connector, and the grid-type distribution structure, and the upper surface It further includes a skeletal structure having a vertical member extending from the plate to a lower side than the lower end of the buffer hopper, wherein the skeletal structure has an upper part formed inside the buffer hopper and shares at least a portion of the internal space of the buffer hopper, The lower part extending downward from the lower end of the buffer hopper may be provided to form a trench in the soil.

Additionally, according to an embodiment of the present application, the buffer hopper may extend from one end of the skeletal structure further to the other side than the other end of the skeletal structure.

In addition, according to one embodiment of the present application, the buffer hopper is provided to extend along the direction in which the buffer hopper extends from the inside of the buffer hopper, and the solidified material stored inside the buffer hopper is disposed in the direction in which the discharge port is disposed. It may further include propulsion elements that move to .

In addition, according to an embodiment of the present application, a plurality of the propulsion elements are arranged along the side direction, and the lower surface of the buffer hopper may have a structure that induces movement of the solidified material on the lower surface by the propulsion elements. .

Additionally, according to one embodiment of the present application, the vertical member may include a trencher that is formed along the lower portion extending downward from the lower end of the buffer hopper and tapers toward the front.

In addition, according to one embodiment of the present application, the discharge hole is formed at the rear of the trencher, and the vertical member is provided from both sides in the lateral direction of the discharge hole so that the solidification material fills the trench formed by the trencher. It may further include a discharge guide plate extending downward and connected to the rear of the trench.

In addition, according to an embodiment of the present application, the installation attachment includes an outlet opening and closing device that opens the outlet when the installation attachment moves while forming a trench in the soil, and closes the outlet when the installation of the solidified fire of the installation attachment is stopped. It further includes an opening and closing rotation axis extending from the rear of the trencher in a lateral direction; a soil resistance member that extends from the opening and closing rotation axis toward the soil and rotates the opening and closing rotation axis according to the pressure exerted by the soil according to the movement of the installation attachment in the working direction; an opening and closing door that rotates in conjunction with the opening and closing rotation shaft and opens and closes the discharge port according to rotation of the opening and closing rotation shaft; and a closing element that drives the opening/closing door to close the discharge port when the pressure exerted by the soil is released.

In addition, according to an embodiment of the present application, the laying attachment has a blade extending from the front of the vertical member in a lateral direction, and adjusts the height of the blade to adjust the protruding length of the trencher that protrudes downward from the lower end of the blade. It may further include a device for adjusting the depth of installation.

In addition, according to an embodiment of the present application, the laying attachment may further include an earth covering plow having a plow blade disposed between neighboring trenchers along a lateral direction at the rear of the trencher.

Additionally, according to an embodiment of the present application, the installation attachment may further include an air filter connected to an opening formed on one surface of the buffer hopper.

In addition, the solid fire laying device according to an embodiment of the present application includes an excavator; The installation attachment; And a solid fire transfer unit having a transfer pipe connected to the installation attachment and a transfer device for transferring solid fire supplied from the solid fire storage device to the installation attachment through the transfer pipe, the transfer device comprising: The solidified material within the transfer pipe can be transferred by applying pressure to the solidified material within the transfer pipe.

In addition, according to an embodiment of the present application, the transfer device includes a chamber formed to receive the solidification material into one side and supply the solidification material to the other side, and to change the internal pressure; a pair of check valves disposed on one side and the other of the chamber and opened and closed according to pressure changes inside the chamber; and a diaphragm disposed inside the chamber and driven to pressurize and depressurize the inside of the chamber, wherein as the pressure inside the chamber decreases, the check valve disposed on one side of the chamber opens and is disposed on the other side of the chamber. The check valve is closed to allow solidified material to flow into the chamber, and as the pressure inside the chamber increases, the check valve disposed on one side of the chamber is closed and the check valve disposed on the other side of the chamber is opened. Solidifying material may be supplied from the chamber to the other side of the chamber.

Additionally, according to an embodiment of the present application, the transfer device includes a plurality of chambers; a plurality of pairs of the check valves disposed on one side and the other side of the chamber; and a plurality of diaphragms disposed inside each chamber, wherein the plurality of diaphragms may be driven to alternately pressurize the plurality of chambers.

In addition, according to an embodiment of the present application, the transfer pipe includes a plurality of transfer pipe segments with check valves disposed therein; So that the transfer pipe segment can be replaced, it includes a connection coupler disposed on both ends of the transfer pipe segment and connected to a neighboring transfer pipe segment, wherein the transfer pipe segment is provided on the boom side of the excavator, and the check valve is It is possible to prevent the solidified material in the transfer pipe segment from moving from the excavator arm side in a direction opposite to the transportation of the solidified material.

In addition, according to an embodiment of the present application, the transfer device suctions and fills the powder-like solidification material through internal pressure control, and pressurizes and transfers the solidification material filled therein. It may include a pressure vessel. .

In addition, according to an embodiment of the present application, the transfer pipe is formed to be magnetically attached to the arm or boom of the excavator, and a metal wire may be built in to prevent static electricity.

In addition, according to an embodiment of the present application, the solid fire laying device includes a level sensor that measures the level of solid fire stored inside the buffer hopper; And it may further include an overfilling prevention device having a transfer device control unit that controls the operation of the transfer device according to the level of the solidified material inside the buffer hopper measured by the level sensor.

In addition, according to an embodiment of the present application, a rotation link is mounted between the installation attachment and the connector of the excavator and is rotatable about the normal direction of the connection surface of the connector.

Additionally, according to an embodiment of the present application, the transfer devices may be arranged in series or parallel to transfer the solidification material.

In addition, the method of laying solidifying material according to an embodiment of the present application includes receiving powdered solidifying material from a solidifying material storage device and temporarily storing it in the buffer hopper; And it may include the step of laying the solidified material stored in the buffer hopper into the soil while moving the laying attachment.

In addition, the surface solidification method according to an embodiment of the present application includes the steps of laying solidified material through a solidified material laying device and attaching a stirring attachment to the arm of the excavator to stir the raw ground soil and solidified material; And it may include the step of compacting the stirred solidified soil by attaching a compaction attachment to the arm of the excavator.

In addition, the integrated surface layer solidification attachment according to an embodiment of the present application includes a connector provided to be mounted on the arm of an excavator; A buffer hopper that temporarily stores the powder solidified material supplied from the solidified material storage device and discharges the solidified material stored therein through a discharge port formed toward the soil side; and a rotary mixer disposed below the buffer hopper and provided to mix the raw soil and the solidification material by rotation, wherein the rotary mixer includes a rotary shaft extending in a transverse direction perpendicular to the front, which is the direction of the stirring operation; a rotating cylinder connected to the rotating shaft and rotating in conjunction with the rotating shaft; And it may include a plurality of stirring blades arranged to protrude from the surface of the rotating cylinder.

In addition, an integrated surface solidification device according to an embodiment of the present application includes an excavator having an endless orbit; And it may include the integrated surface solidification attachment mounted on the arm of the excavator.

The above-described means of solving the problem are merely illustrative and should not be construed as intended to limit the present application. In addition to the exemplary embodiments described above, additional embodiments may be present in the drawings and detailed description of the invention.

According to the above-described means of solving the problem of the present application, the present application spreads powdery solidified material in the soil at a certain ratio and provides the effect of preventing scattering of the solidified material.

In addition, the present application achieves the effect of providing a laying attachment, a solidifying material laying device, a solidifying material laying method, and a surface layer solidification method that can perform preliminary agitation by a trencher that forms a trench in the soil when laying solidified material.

In addition, this center provides a laying attachment, a solidifying material laying device, a solidifying material laying method, and a surface solidification method that enable continuous supply of solidified material through a sealed transportation system through hoses, buffer hoppers, filters, etc., rather than through tonbag transportation. can do.

In addition, this institute has the effect of providing a solidified fire laying device, a solidified fire laying method, and a surface solidification method that can work from a distance from a position where bearing capacity is secured for soft ground where equipment entry is difficult.

However, the effects achieved by the embodiments of the present application are not limited to the technical challenges described above, and other effects may exist.

1 is a schematic conceptual diagram of a solid fire installation device according to an embodiment of the present application.
FIG. 2 is an exemplary diagram of the excavator 100 shown in FIG. 1.
Figure 3 is a diagram schematically showing the transfer pipe 310 mounted on the boom of the excavator 100 according to an embodiment of the present application.
4A and 4B are schematic conceptual diagrams of a transfer device 320a according to an embodiment of the present application.
5A and 5B are schematic conceptual diagrams (plan view and perspective view) of a transfer device 320b according to another embodiment of the present application.
FIG. 5C is a schematic diagram for explaining the operation of the actuator 323b of FIGS. 5A and 5B.
6 and 7 are schematic diagrams of transfer devices 320c and 320d according to other embodiments of the present disclosure.
Figures 8 and 9 are perspective views of the installation attachment 500 according to an embodiment of the present application.
Figure 10 is a diagram schematically showing the propulsion device 523 disposed inside the buffer hopper 520 of the installation attachment 500 according to an embodiment of the present application.
FIG. 11 is a diagram illustrating a skeletal structure 530 according to an embodiment of the present application.
FIG. 12 is a diagram illustrating a trencher 5331 and a discharge guide plate 5332 according to an embodiment of the present application.
13 and 14 are diagrams showing an outlet opening and closing device 540 according to an embodiment of the present application.
Figure 15 is a diagram schematically showing the operation of the outlet opening and closing device 540 according to an embodiment of the present application.
Figure 16 is a diagram showing the placement depth adjustment device 550 and air filter 570 in the installation attachment 500 according to an embodiment of the present application.
FIGS. 17A to 17C are diagrams schematically showing the soil covering plow 560 covering the solidified material filled in the trench (T) with soil (Soil) according to an embodiment of the present application.
Figure 18 is a side view of an integrated surface layer solidification attachment according to an embodiment of the present application.
Figure 19 is a perspective view of the stirring attachment.
Figure 20 is a schematic conceptual diagram showing the direction of stirring operation of an excavator equipped with a stirring attachment.
Figure 21 is an exploded perspective view of Figure 19.
Figure 22 is a perspective view of the rotary mixer 21 of the stirring attachment 20.
Figure 23 is a schematic cross-sectional view of the stirring attachment 20.
Figures 24a to 24c are diagrams showing the stirring blade of the rotary mixer 21 and the bit provided on the stirring blade.
Figures 25 and 26 are schematic conceptual diagrams showing the operation of a rotary mixer.
27A to 27C are schematic cross-sectional views of a rotary mixer according to an embodiment and an exemplary comparative example of the present application.
Figure 28 is a schematic conceptual diagram of the relationship between the grid frame, the side frame, and the rotation axis according to an embodiment of the present application.
Figure 29 is a perspective view of a skeleton cover according to an embodiment of the present application.
Figure 30 is a view showing a maintenance door provided on the skeleton cover according to one embodiment of the present application.
Figure 31 is a view showing a maintenance door provided in a stirring attachment according to another embodiment of the present application.
Figure 32 is a diagram showing a compaction roller compacting solidified soil according to an embodiment of the present application.
Figure 33 is a diagram showing a compaction roller according to an embodiment of the present application.
Figure 34 is a diagram schematically showing the operation when soil is compacted by a compaction roller.
Figures 35a and 35b are diagrams showing the operation of a support leg according to an embodiment of the present application.
Figure 36 is a diagram showing a rotation link according to an embodiment of the present application.
Figure 37 is a diagram showing an example of a stirring operation and a solid fire laying operation performed when a rotating link is not provided according to an embodiment of the present application.
Figure 38 is a diagram showing an example of a stirring operation and a solid fire laying operation performed when a rotating link is provided according to an embodiment of the present application.
Figure 39 is a diagram schematically showing a surface solidification method that allows a stirring attachment or laying attachment to rotate an excavator according to an embodiment of the present application.
Figures 40 and 41 are diagrams showing a rapid hydraulic link according to an embodiment of the present application.
Figure 42 is a diagram showing a mist injection device according to an embodiment of the present application provided on an excavator.
Figure 43 is a flow chart of the surface layer solidification method (S1) according to an embodiment of the present application.
Figure 44 is a flow chart of the surface layer solidification method (S2) according to another embodiment of the present application.
Figure 45 is a schematic flowchart of a solid fire installation method (S12) according to an embodiment of the present application.
Figures 46 and 47 are flowcharts of the surface layer solidification method (S3, S4) according to embodiments of the present application.

Below, with reference to the attached drawings, embodiments of the present application will be described in detail so that those skilled in the art can easily implement them. However, the present application may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly explain the present application in the drawings, parts that are not related to the description are omitted, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout this specification, when a part is said to be “connected” to another part, this means not only “directly connected” but also “indirectly connected” or “electrically connected” with another element in between. "Includes cases where it is.

Throughout this specification, when a member is said to be located “on”, “above”, “at the top”, “below”, “at the bottom”, or “at the bottom” of another member, this means that a member is located on another member. This includes not only cases where they are in contact, but also cases where another member exists between two members.

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

Terms such as "1st~" and "2nd~" may be used to indicate the same or substantially the same configuration in a different order, and may be used to indicate the same or substantially the same configuration as the configuration without "1st", "2nd", etc. It can be interpreted as a composition.

In addition, in the description of the embodiments of the present application, terms related to direction or position (top, top, bottom, etc.) are set based on the arrangement status of each component shown in the drawings.

Hereinafter, the laying attachment 500, the solidified fire laying device (1), the surface layer solidification method (S1, S2), and the solidified fire laying method (S12) according to various aspects of the present application will be described.

First, referring to Figure 1, the solidified fire laying device 1 according to an embodiment of the present application compacts the soil of the surface layer of soft ground with high water content at a depth of 1 to 2 m from the ground surface by mixing (stirring) with solidified material at a certain ratio. When solidifying the surface layer by carrying out the work, the powdered solidified material can be spread in the soil at a constant rate to enable fixed-rate mixing and prevent the powdered solidified material from scattering. The solid fire laying device 1 may include an excavator 100, a solid fire storage device 200, a solid fire transport unit 300, and a laying attachment 500. As will be described later, the high fire installation device 1 may further include a rotary link 30 and a rapid hydraulic link 40.

In the scope of the patent claims and description of the invention of the present application, the front can be understood as the work direction (see 4 o'clock direction in FIG. 8) in which the laying attachment 500 moves while laying solidified fire by the excavator 100. The direction opposite to the working direction in which the installation attachment 500 moves can be understood as rear, and the lateral direction and vertical direction based on the front and rear can be understood by a person skilled in the art.

On the other hand, as shown in Figures 1 and 3, when the laying attachment 500 is mounted on the excavator 100 to lay solid fire material in the soil, the laying attachment 500 is installed up to the operating range using the arm and boom of the excavator. It can be understood that solidification material is laid while moving the laying attachment 500 towards the excavator 100 by pulling and moving it. Referring to this, it can be understood that the moving direction of the excavator 100 and the working direction of the laying attachment 500 are in opposite directions. However, the moving direction of the excavator 100 and the working direction of the laying attachment 500 may not be in opposite directions, and the working direction of the laying attachment 500 may be parallel to the moving direction of the excavator 100 or at a predetermined angle. You can have it.

Referring to FIG. 2, the excavator 100 has a lower body 101 that moves the excavator while supporting the load of the excavator, and an upper body that is provided to rotate with respect to the lower body 101. An operator enters the excavator and moves the excavator. A cabin 102 provided to operate, a boom 103 extending from the upper body to one side, an arm 104 connected to one end of the boom to perform a boom-arm operation, and provided on the opposite side of the boom to control the excavator. It may include a counterweight 105 that maintains the center, a connector 106 provided at one end of the arm for connection to an attachment, and a plurality of hydraulic cylinders 107 provided to operate the boom, arm, and attachment. . In addition, the excavator is equipped with an electronically controlled hydraulic pump (108, hereinafter referred to as a hydraulic pump) that provides power by hydraulic pressure to the stirring attachment 20, as described later, and a hydraulic pump electronic control device (not shown) that controls the hydraulic pump. Poetry) may be further included.

The high fire laying device (1) of the present invention uses a laying attachment (500) mounted on the excavator along with the excavator (100), so that work can be performed even on soft ground located far away from the center of gravity of the equipment. . When performing surface solidification work on soft ground, entry of equipment into the soft ground is restricted. Equipment that can improve soft ground at a distance is needed by placing the equipment in an area where bearing capacity is secured or bearing capacity has been improved. In the case of this facility, even when surface solidification work is performed on soft ground separated from the lower body of the excavator by an excavator, the solidification work is performed by moving the boom and arm of the excavator and moving the laying attachment 500 along the work direction. can do.

The lower body 101 of the excavator may have an endless orbit. On soft or solid ground, the lower the grounding pressure, which is the operating weight of the equipment divided by the grounding area, the more stable work is possible. Our excavator has an increased grounding area because the lower body is not equipped with wheels but an endless track, which lowers the grounding pressure. . In addition, when the curing period is not sufficient on the solidified ground that has been solidified, even when a bearing force distribution panel is laid to shorten the period and the excavator enters for solidification work, the load of the excavator (100) is placed on the solidified ground before curing is completed due to low ground pressure. The impact can be minimized.

In one embodiment of the present application, the connector 106 provided at one end of the arm may be provided to be capable of engaging with other attachments, including the installation attachment 500, which will be described later. For example, the connector 106 may be connected to the stirring attachment 20 for mixing the raw soil and the solidification material after laying the solidification material. In relation to agitation of soil using the agitation attachment 20, the connector 106 may include a pin for fastening with the agitation attachment 20, and the pin is the rotation shaft 211 of the rotary mixer 21, which will be described later. ) The arm of the excavator 100 and the stirring attachment 20 can be connected in a state extended in parallel. Since most of the conventional equipment is not intended to use the power of the boom and arm, but rather works by rotating the upper body of the excavator, the connector pin connecting the excavator and the equipment is provided to form a right angle to the rotation axis of the attachment. On the other hand, in the case of the stirring attachment according to an embodiment of the present application, the connector pin extends in a direction parallel to the rotation axis to connect the excavator boom, arm and the stirring attachment.

In addition, the excavator 100 includes a hydraulic pump 108 that provides power by hydraulic pressure to the laying attachment 500 or the stirring attachment 20, which will be described later, and a hydraulic pump electronic control device (not shown) that controls the hydraulic pump. It can be included. In the case of the PTO device used in conventional stirring work, in order to stably exert large force, the driving force is usually drawn from the internal combustion engine of a tractor or truck, and the rotational force is generated using a bevel gear that transmits the drawn power at a right angle. Delivered. Even if large and stable power can be obtained from an internal combustion engine, in order to perform solidification work on soft ground, equipment entry must be resolved first and an access route for solidification supply must be secured, so such a conventional PTO device It cannot be directly applied to soft ground solidification laying equipment and surface solidification stirring equipment. In the case of PTO equipment, it must be installed close to the engine and crankshaft, so connect the stirring equipment at a location close to the engine to follow the progress of the equipment. There is a limitation in having to drag the stirring device around. Against this background, in order to solidify the surface layer of soft ground as described above, it is necessary to be able to perform the solidification work at a location away from the area where the solidification work is to be performed. However, through PTO equipment, the solidification work for the soft ground can be performed smoothly. I can't.

In conclusion, the solidification work of soft ground requires a detachable attachment-type stirring device from the excavator. Since the PTO method cannot be applied to the excavator because the arm (104) and boom (103) are bent, a hydraulic motor is installed to provide power. must be secured. In addition, hydraulic pressure must be supplied to the same configuration as the propulsion element of the laying attachment 500, and in order to maximize the flow rate when supplying the hydraulic motor 24 of the stirring attachment, hydraulic motors of sufficient capacity are installed on both sides of the rotating shaft, The hydraulic pressure of the excavator must be concentrated as much as possible on the stirring attachment (20). Meanwhile, the hydraulic pump provided in the excavator plays the role of supplying hydraulic pressure from the hydraulic tank to each component that requires hydraulic pressure, such as various cylinders, body rotation, orbital brakes, and steering motors. At this time, the hydraulic pump is performed by the laying attachment or stirring attachment. The hydraulic pressure required for solidification work is overwhelmingly higher than the hydraulic pressure required for other configurations. Therefore, a hydraulic pump electronic control device that supplies maximum hydraulic pressure to the laying attachment or stirring attachment can be provided by concentrating the hydraulic pressure in the attachment hydraulic cylinder that supplies hydraulic pressure to the laying attachment or stirring attachment. In conventional devices that are not equipped with a hydraulic pump electronic control device, even if the hydraulic tank is increased or a hydraulic amplification device is added, the surplus hydraulic pressure is distributed equally to all necessary devices, so it is not necessary to specify and concentrate the hydraulic supply pipe for the target attachment. Otherwise, it is not effective in securing sufficient power for solidification work. Therefore, the solidified material laying device or the surface solidification stirring device for stirring the solidified material of the present invention is equipped with a hydraulic pump electronic control device and can secure sufficient power by intensively supplying hydraulic pressure to the attachment hydraulic cylinder.

The hydraulic pump electronic control device may be equipped to control the discharge flow rate in proportion to the operation amount of the operation lever within a set value range with a preset setting value limiting the maximum dischargeable flow rate of the hydraulic pump. The hydraulic pump electronic control device can control the hydraulic flow for each task, such as boom work, boom down speed control, attachment work, and turning work, and can determine the priority of hydraulic supply between the above tasks, and fixes for attachment work. Flow rate can be set. In one embodiment, with the setting value of the maximum dischargeable flow rate of the hydraulic pump set in advance, the discharge flow rate is controlled in proportion to the operation amount of the operating lever within the setting value range to apply maximum hydraulic pressure to the stirring attachment 20. It can be supplied. In addition, when supplying hydraulic pressure to the laying attachment 500 or stirring attachment 20 through the hydraulic pump electronic control device, the flow rate can be set in advance in a preferential and fixed manner. In addition, the hydraulic pump may be of a variable displacement type. A variable displacement hydraulic pump is a pump that changes hydraulic oil discharge according to the required pressure of the hydraulic system. For example, the pressure regulator of a variable capacity hydraulic pump (for example, a swash plate type variable capacity axial piston pump) controls the discharge flow rate by adjusting the pump swash plate angle in response to changes in pressure inside the pump due to changes in load. It may be a device that allows this.

In one embodiment, the hydraulic pump electronic control device may control the flow rate of the hydraulic pump according to the following flow. First, a detection signal corresponding to the operation amount of the operation lever detected by the pilot pressure detection sensor that detects the pilot signal pressure according to the operation of the operation lever is transmitted to the controller. For this reason, the flow rate required for the hydraulic pump is calculated in proportion to the manipulated amount of the operating lever using the relationship between the volume of the hydraulic pump and the manipulated amount. Afterwards, a detection signal corresponding to the discharge pressure of the hydraulic pump detected by the discharge pressure detection sensor that detects the pressure of the hydraulic oil discharged from the hydraulic pump is transmitted to the controller. As a result, the maximum dischargeable flow rate that does not exceed a certain horsepower or torque in the detected discharge pressure range can be calculated through a calculation formula. After comparing the flow rate value required for the hydraulic pump with the maximum discharge flow value that does not exceed the set value, if the flow rate value by operating the control lever is less than the calculated maximum discharge flow value, the discharge flow rate of the hydraulic pump is controlled to be proportional to the operation amount of the operation lever, and if the flow rate value according to the operation of the operation lever is greater than the calculated maximum discharge flow value, the discharge flow rate of the hydraulic pump can be controlled to the maximum discharge flow value that does not exceed the set value. there is.

The solidified material storage device 200 is a device that stores powdered solidified material spread in the soil. For example, it may be a silo storing the solidified material. In a typical solidification site, economic feasibility can be satisfied only when one piece of equipment can work at least 500 rubets per day (8 hours). The amount of solidification material usually mixed is 130 kg per rube of soil, so the solidification material needed per day is 130 kg per day. The quantity is 65 tons, and about 3 units must be brought to the site by cargo truck. Therefore, the solidified material storage device 200 may be a silo in the form of a sealed tank or a mobile storage tank to supply a large amount of solidified material through the solidified material transfer unit 300. In addition, the solidified fire storage device 200 can be understood as a storage container storing powdered solid fire material in the field. If the solid fire storage device 200 is provided as a fixed silo, it may be a vertical cylindrical or horizontal container-type silo, and if it is provided as a mobile storage tank, it may be loaded on a tracked truck or carrier.

The solidified material transfer unit 300 can supply powdered solidified material from the solidified material storage device 200 to the laying attachment 500 mounted on the excavator 100. The solidified material storage device 200 may be located far away from the site where the surface solidification work is performed, and the solidified material transfer unit 300 applies pressure to the powder-like solidified material from a distance to install a laying attachment (mounted on an excavator at the surface solidification site). Solidifying material can be supplied up to 500). The solid fire transfer unit 300 may include a transfer pipe 310 and a transfer device 320. For example, the fire storage device 200 and the transfer device 320 may be provided in a fixed manner, and the transfer pipe 310 may extend to the working position of the excavator, but this is not limited to this and may be changed depending on construction conditions. It can be. In a different way, the fire storage device 200 and the transfer device 320 can be moved while loaded together on a truck or carrier, and the length of the transfer pipe 310 to the excavator is shortened as much as possible. ) can also reduce the transfer pressure loss. Meanwhile, the transfer pipe 310 does not always remain connected from the solid fire storage device 200 to the installation attachment 500, and may be separated as needed. However, in order to fill the buffer hopper 520 of the installation attachment 500 with solidification material, all of the transfer pipes 310 are connected.

Referring to FIG. 3, the transfer pipe 310 extends from the solidifying material storage device 200 to the laying attachment 500 and is connected to the laying attachment 500 to supply powdered solidifying material. In one embodiment, the transfer pipe 310 may be flexible to move in response to the movement of the arm and boom of the excavator. Additionally, the transfer pipe 310 may be attached to the excavator through magnetic force. In the case of a rented excavator, it is not possible to install a fixture to fix the transfer pipe, so the transfer pipe can be attached and fixed to the excavator using an easily detachable magnet. At this time, a metal wire may be built in to prevent static electricity from being generated in the transfer pipe. A copper wire may be provided in the transfer pipe to prevent static electricity. Through this, clogging of the transfer pipe due to static electricity can be prevented. The metal wire provided in the transfer pipe can be wound and extended in a spiral shape within the transfer pipe. However, the transfer pipe 310 is attached to the arm and boom of the excavator and does not extend along the arm and boom of the excavator, but may be extended to a section where separate solid fire installation is required.

Continuing to refer to FIG. 3, the transfer pipe 310 according to an embodiment of the present application includes a plurality of transfer pipe segments 311 with check valves 311a disposed therein, disposed at both ends of the transfer pipe segments, and adjacent It may include a connection coupler 312 connecting the transfer pipe segment. When the transfer pipe 310 is arranged along the arm and boom of the excavator, a section where the transfer pipe rises occurs, and depending on whether the transfer device 320 is pressurized or malfunctions, sufficient pressure is not applied to the fire in this section. Therefore, the dense phase may not be maintained. In order to maintain a dense phase of the solidified material and prevent backflow, a plurality of transfer pipe segments 311 with check valves disposed therein may be connected. Additionally, so that the transfer pipe segments 311 can be replaced, the connection coupler 312 can connect adjacent transfer pipe segments. That is, the transfer pipe segment 311 is provided on the boom side of the excavator, which is the section where the solidified material rises while being transported by the transfer pipe, and the check valve 311a is used to transfer the solidified material from the arm side of the excavator. It may be provided to prevent movement in the opposite direction.

The transfer device according to the embodiments of the present application will be described with reference to FIGS. 4 to 7. The transfer device 320 can transfer the solidified material within the transfer pipe in a dense phase by applying pressure to the solidified material within the transfer pipe. Dense phase transfer of solidified material is a high-pressure, low-speed transfer of solidified material, and the amount of air is not large compared to the amount of transfer, so it can be understood that it is possible to reduce or omit the dust collector or filter on the powder receiving part. As a comparative concept, diluted phase transfer is a method of transferring powder to the receiving unit by injecting additional air pressure inside the transfer pipe in the direction of the powder flow using a blower or compressor. Diluted phase transport is low-pressure, high-speed transport, and the amount of air is large compared to the transport amount of powder, so a cyclone dust collector and air filter that can separate air are essential at the powder receiving part. In order to transport a sufficient amount of solidification material required for surface solidification work, dense transport of the solidification material is essential. Accordingly, the transfer device 320 may transfer the solidified material within the transfer pipe by applying pressure to the solidified material within the transfer pipe. That is, the transfer device 320 is a pressurized transfer device and can enable dense transfer of solidified materials.

For a suction-type transfer device rather than a pressurized type, a pump for suction must be placed on the excavator arm, and devices for supplying the compressor and electricity required to operate the pump must be installed adjacent to it. Installation of the above devices is not possible due to the space required for movement and work of the excavator and the conditions of the surface solidification site. In addition, the vacuum suction type transfer pump that is commonly sold has a maximum capacity of 3 tons per hour, which not only cannot supply the amount required for solidification work, but also the size of the suction type transfer pump is so large that it is built as an attachment at the end of the excavator arm along with the auxiliary equipment. Can not. The suction type pump transfers the solidification material in a diluted form as described above, so the transfer amount is small. In other words, although vacuum suction pumps are capable of transporting powder, they cannot be applied to long-distance or large-capacity transport. Therefore, it cannot be applied to the surface solidification of soft ground with a large amount of transport, and in this facility, considering the activity of the solidification installation equipment, the transport of dense powder is possible where dust collectors and air filters can be minimized or omitted. The powdered solidification material being transported may be made of fine particles with a particle diameter of less than 100 micrometers that are homogeneous in a dried state and do not clump together, and can be understood to have properties similar to cement, fly ash, and blast furnace slag.

A plurality of transport devices 320 of the present invention may be connected in series or parallel depending on the conditions for transporting solid fire. If the distance between the solidified fire storage device 200 and the site where surface solidification is performed is long, the transfer devices 320 may be connected in series, and if a large amount of solidified fire needs to be transported, a plurality of transfer devices 320 may be used. Can be connected in parallel.

Pumps typically transport liquid materials. Unlike liquid, powder transport involves a lot of friction between machinery and powder particles. Therefore, when using a mechanical pump such as a screw, piston, impeller, or screw type, it is impossible to transport powder due to pressure loss and wear due to friction. Therefore, powder solidified material is transported through a transfer device that does not come into contact with the powder other than the transfer pipe and chamber. can do.

The transfer pipe 310 connected from the solid fire storage device 200 may be connected to the suction port of the transfer device 320. Another transfer pipe 310 may be connected from the discharge port of the transfer device 320 to another transfer device 320 or installation attachment 500.

Referring to FIGS. 4A, 4B, and 5A to 5C, the transfer device 320 of the present facility receives the solidification material on one side and supplies the solidification material on the other side, and includes a plurality of devices formed to change the internal pressure. Chambers (321a, 321b), a plurality of pairs of check valves (322aa, 322ab, 322ba) disposed on one side and the other of each chamber and opened and closed according to pressure changes inside the chamber, which drive the diaphragm to pressurize and depressurize the inside of the chamber It may include an actuator (323a, 323b) and a plurality of diaphragms (324a, 324b) disposed inside the chamber and driven to pressurize and depressurize the inside of the chamber. The transfer device 320 can receive solidified material from one side by depressurizing the inside of the chamber, and supply solidified material to the other side by pressurizing the inside of the chamber.

When the pressure inside the chamber is lowered by the diaphragms (324a, 324b), the check valve disposed on the inlet side of the transfer device 320 is opened, and the check valve disposed on the discharge port side is closed, allowing the solids flowing into the inlet of the transfer device. Fire may enter the chambers 321a and 321b. At this time, the diaphragm is disposed inside the chamber and changes the volume of the chamber according to the forward and backward movement by the actuator, thereby depressurizing or pressurizing the inside of the chamber. Meanwhile, when the pressure inside the chamber increases due to the diaphragm, the check valve disposed on the inlet side of the transfer device 320 is closed, and the check valve disposed on the discharge port side is opened so that the solidified material inside the chamber can be supplied to the discharge port side. there is. At this time, the plurality of diaphragms are driven to alternately pressurize the plurality of chambers, allowing the transfer device 320 to continuously transfer the solidification material.

As shown in FIGS. 4A and 4B, the transfer device 320a according to one embodiment can alternately pressurize the two chambers 321a through the reciprocating movement of the diaphragm. The diaphragm 324a is provided between the two chambers 321a, and can depressurize and pressurize the inside of the chambers disposed on both sides of the diaphragm while being reciprocally driven by an actuator 323a operated by pneumatic pressure. According to the reciprocating movement of the diaphragm 324a, the chambers 321a on both sides are alternately depressurized and pressurized, and thus solidification material is alternately received and supplied, thereby enabling continuous supply of solidification material. For example, this transfer device 320a can transfer about 10 tons of solidified fire per hour.

Meanwhile, as shown in FIGS. 5A to 5C, the transfer device 320b can alternately pressurize the three chambers 321b through movement of the diaphragm 324b by rotation of the actuator 323b using electric power, etc. there is. That is, as the actuator 323b rotates, the diaphragm 324b alternately depressurizes and pressurizes each chamber, and the check valves 322b disposed on one side and the other of each chamber alternately open and close, thereby reducing the pressure. Fire can flow into the chamber from one side of the chamber and be supplied from inside the chamber to the other side of the chamber. In one embodiment, the transfer device 320b has one inlet and one outlet, and a set of three chambers 321b and a diaphragm 324b may be arranged around the actuator 323b. As the actuator 323b rotates, the three diaphragms 324b operate alternately to depressurize and pressurize the inside of the chamber 321b, thereby allowing solidification material to be continuously supplied. In one embodiment shown in FIG. 5C, the actuator 323b is stacked with an eccentric cam 323bb that rotates eccentrically about a rotation axis 323ba, and sharing a central axis 323bc with the eccentric cam 323bb. It may include a disk (323bd). The disk 323bd and the diaphragm 324b may be connected through a link member 323be extending from the disk 323bd toward each diaphragm 324b. When the eccentric cam 323bb rotates in an eccentric state from the rotation axis 323ba, the disk 323bd shares the central axis 323bc with the eccentric cam 323bb and moves in conjunction with the rotation of the eccentric cam, and the disk (323bd) shares the central axis 323bc with the eccentric cam 323bb. The link member 323be extending from 323bd can alternately advance and retract the diaphragm 324b toward the inside of the chamber. That is, as shown in (a) of FIG. 5A, the diaphragm 324b advances into the chamber 321b and pressurizes the inside of the chamber, and as shown in (b) of FIG. 5A, the diaphragm 324b moves into the chamber. (321b) The inside of the chamber can be depressurized by retreating from the inside. In addition, so that the disk 323bd shares a central axis with the eccentric cam 323bb and moves in conjunction with the rotation of the eccentric cam, between the central axis 323bc and the eccentric cam 323bb, or between the central axis 323bc and the disk ( A bearing or sleeve may be provided between 323bd), and the configuration of the actuator 323b is not limited to the above-described embodiment. For example, such a transfer device can transfer approximately 15 tons of solid fire per hour.

In this way, in the process of receiving the solidifying material into the plurality of chambers and supplying the solidifying material inside the chamber, a branch flow path may be formed to connect from the suction port to one side of the plurality of chambers, and from the discharge port to the other side of the chamber. A branch flow path may be formed. At this time, the branch flow paths of the suction port and the discharge port may diverge beyond a set angle in consideration of the smooth flow of the powder solidification material therein. For example, the set angle may be 90 degrees. That is, the intake and discharge ports can be formed to branch into a Y shape or more to facilitate the flow of the powder solidification material.

The transfer device 320c according to an embodiment shown in FIG. 6 is a pressure vessel 321c that sucks and fills the powder-like solidification material through internal pressure control and pressurizes and transfers the solidification material filled inside. may include. The transfer device 320c may be provided as a device such as a hopper that receives powder through an openable inlet and applies pressure inside the pressure vessel to supply the powder through the outlet. The transfer device 320c can suction and fill the powder solidification material by creating a low pressure inside, and can be driven by pressurizing the inside of the pressure vessel to push out the powder inside. This type of transfer device does not have a separate blower. The powder transfer device, which injects separate air pressure into the transfer pipe using a blower, has the problem of requiring a bulky cyclone dust collector because the amount of air is large for diluted phase transfer. Detailed operation of the transfer device 320c can be understood with reference to a typical hopper. For example, such a transfer device can transfer approximately 30 tons or more of solid fire per hour.

The transfer device 320d according to an embodiment shown in FIG. 7 may be provided to provide pressure to transfer the powder solidification material in the transfer hose 324d connected to the transfer pipe. For example, the transfer device 320d may be a pressurized hose pump. The transfer device 320d includes a pump housing 321d having a circular cross-sectional shape and a predetermined thickness having an inlet formed to suck in the transfer material and a discharge port formed to discharge the transfer material, a drive shaft 322d rotated by a drive motor, and the drive shaft. A rotating body (323d) is coupled to (322d) and rotates according to the driving of the driving motor inside the pump housing, extends from the suction port to the discharge port inside the pump housing, and is connected to the pump housing on the outside of the rotating body (323d). It may include a pump hose (324d) disposed along the inner peripheral surface. The operation of the transfer device 320d can be understood with reference to a typical hose pump.

Hereinafter, the installation attachment 500 will be described with reference to FIGS. 8 to 17. The laying attachment 500 is mounted on the arm of the excavator and can lay solidified material in the soil. The laying attachment 500 temporarily stores the powdered solidified material that is pressurized and transferred in a dense form from the solidified fire storage device 200 through the transfer pipe 310, and can be placed in the soil at a constant rate and speed. The laying attachment may include a connector 510, a buffer hopper 520, a skeletal structure 530, an outlet opening/closing device 540, a laying depth adjusting device 550, a soil covering plow 560, and an air filter 570. You can.

The connector 510 is provided to connect to the arm of the excavator, and is connected to the connector at one end of the arm of the excavator instead of the excavator bucket, so that the installation attachment 500 can be mounted on the arm of the excavator. The connector 510 can be understood with reference to a typical connector provided for mounting on an excavator arm.

The buffer hopper 520 temporarily stores the powder solidified material supplied from the solidified material storage device, and discharges the solidified material stored inside to the soil side through a discharge port formed to face the soil as the installation attachment moves in the working direction. It may be provided to do so. The high fire installation device (1) pulls the installation attachment (500) during various operations such as pushing, pulling, rotating, and moving by the boom and arm of the excavator (100) and moves the installation attachment (500) in the working direction (forward). The solidified material is laid only when moving to, but since the solidified material transport unit 300 must continuously transport the solidified material to maintain the dense phase of the solidified material, a buffer hopper capable of buffering this is required. Therefore, the buffer hopper 520 according to an embodiment of the present application stores the supplied solidification material, and the installation attachment 500 moves in the working direction (forward) according to the operation of the excavator 100 to lay the solidification material. Accordingly, the solidified material stored inside can be discharged at a constant speed and at a constant rate. It is desirable that the buffer hopper be able to store at least the one-time workload of the solid fire laying device.

Referring to FIGS. 8 and 9, the buffer hopper 520 may extend from one end of the skeletal structure further to the other side than the other end of the skeletal structure. In a preferred embodiment, the buffer hopper 520 may extend from the front end of the skeletal structure 530 further rearward than the rear end of the skeletal structure. Here, the end of the skeletal structure 530 may be understood as an end in the front, rear, or side direction of a portion formed on the attachment to transmit or support an acting force such as force transmitted from an excavator or resistance from the soil. As described later, when the installation attachment 500 is moved by moving the boom and arm of the excavator to lay the stored solid fire, soil resistance is applied to the lower part 530b of the skeleton structure provided to form a trench in the soil. This resistance of the soil acts as a moment on the connector of the excavator arm. The length of the lower part 530b protruding downward from the buffer hopper 520 varies depending on the length of the buffer hopper 520 in the vertical direction, By minimizing the vertical length of the buffer hopper 520, the vertical length from the connector 510 of the skeletal structure 530 can be minimized to provide a lower portion 530b of the same length. Therefore, minimizing the vertical length of the buffer hopper 520 can minimize the resistance loaded on the excavator by minimizing the moment arm length when laying solid fire.

In other words, the present invention can further deepen the depth of the trench formed in the soil, or minimize the length in the vertical direction of the buffer hopper 520 so that less force is required even if a trench of the same depth is formed in the soil. The length of the lower part 530b protruding downward from the lower end of the hopper 520 can be maximized, and the load applied to the laying attachment or excavator due to soil resistance can be minimized. The buffer hopper 520 may extend longer than the skeletal structure 530 in the front or side direction of the skeletal structure 530.

In addition, from the same perspective, in order to minimize the length of the buffer hopper 520 in the vertical direction, the upper part of the skeleton structure 530 is formed inside the buffer hopper, so that it can share at least a portion of the internal space of the buffer hopper. . In other words, the skeletal structure 530 occupies a portion of the internal space of the buffer hopper 520 where the solidified material is stored. Through this, the skeleton structure 530 can transmit the operating force of the excavator and the trencher while simultaneously minimizing the volume of the buffer hopper 520, preferably the length in the vertical direction.

The buffer hopper 520 may be formed to face the soil and include a discharge port 521 that discharges the solidified material stored inside the buffer hopper 520. When the discharge port 521 is opened, the solidified material can be discharged out of the buffer hopper 520 at a constant speed. The discharge port 521 may be provided on the front side of the buffer hopper 520, preferably behind the plurality of trenchers 5331 provided to form trenches in the soil, and opened downward. Accordingly, when the trencher 5331 advances along the working direction while forming a trench in the soil, the solidified material discharged from the discharge port 521 toward the soil can be placed in the formed trench.

Referring to FIG. 10, the lower surface 522 of the buffer hopper may extend to be inclined downward toward the front (working direction). That is, the solidified material stored inside may be provided to move along the lower surface 522 toward the discharge port. Unlike the illustrated embodiment, when the buffer hopper extends longer than the skeletal structure 530 in a direction other than the rear, the lower surface 522 is a portion of the buffer hopper 520 where the discharge port is not located. It can be formed at an angle so that the solidified material moves. However, when the solidified material is moved by the propulsion element 523, the lower surface 522 may extend horizontally.

The buffer hopper 520 is provided to extend from the inside of the buffer hopper along the direction in which the buffer hopper extends, and includes a propulsion element 523 that moves the solidified material stored inside the buffer hopper in the direction in which the discharge port is arranged. It can be included. In a preferred embodiment in which the buffer hopper extends long rearward, the propulsion element 523 may be provided to extend front and rear inside the buffer hopper. In a preferred embodiment, the propulsion element 523 can move the solidified material stored on the inner rear side of the buffer hopper to the front where the discharge port is located. The propulsion element 523 can be understood as a configuration that moves the solidified material stored in the portion of the buffer hopper where the discharge port 521 is not located to the portion where the discharge port is located, and is a screw that rotates around an axis extending forward and backward, or It may be provided as a conveyor that extends forward and backward and moves the solidified material above it. The propulsion element 523 extends forward and backward and is not excluded from extending in the lateral direction as well. That is, the propulsion element 523 may be extended obliquely. In addition, the propulsion element 523 may extend forward and backward and obliquely along the lower surface 522, and the front and rear extension of the propulsion element is preferably understood as a concept that includes all of these.

By installing one or more screws inside the buffer hopper and rotating the screw to push the solidified material at the rear to the front where the discharge port is, the inclination angle of the rear 522 of the buffer hopper can be made horizontal or very gentle. Through this, the vertical length of the buffer hopper 520 can be minimized. In addition, the solidified material stored in the portion of the buffer hopper 520 where the discharge port is not located can be continuously discharged by moving the solidified material stored in the portion where the discharge port 521 is located.

In one embodiment, a plurality of propulsion elements 523 may be disposed along a lateral direction to move the solidified material. In addition, the lower surface 520 of the buffer hopper may have a structure that induces movement of the solid material on the lower surface by the propulsion element. For example, a groove 522a recessed along the front and rear sides may be disposed on the lower surface 522 in response to the arrangement and shape of the propulsion element 523. According to the movement guidance structure formed on the lower surface 522 in response to the shape and arrangement of the propulsion element 523, the solidified material can be moved more easily. However, the fact that a plurality of propulsion elements 523 are arranged in the lateral direction is explained based on the case where the buffer hopper 520 is extended rearward according to a preferred embodiment, and the position of the buffer hopper 520 in the vertical direction is It is desirable to understand that it can be arranged differently depending on the direction in which the extension is formed in order to minimize the length.

The skeletal structure 530 can form a trench in the soil according to the movement of the laying attachment 500 while transmitting the operating force of the excavator and the trencher. Referring to FIG. 8, the skeleton structure 530 can be divided into an upper part 530a and a lower part 530b. The upper portion 530a may be formed inside the buffer hopper and share at least a portion of the internal space of the buffer hopper. That is, the upper part 530a can be understood as a structure for supporting or transmitting the force and resistance caused by the soil, and overlaps a portion of the internal space of the buffer hopper 520 to extend the vertical length of the installation attachment 500 including the buffer hopper. can be minimized. The lower portion 530b extends lower than the lower end of the buffer hopper to form a trench in the soil.

The skeletal structure 530 may include a top plate 531. The top plate 531 may have a plate shape with a connector 510 disposed on the upper side. The upper surface plate faces the inner space of the buffer hopper 520 and may substantially form a portion of the upper surface of the buffer hopper 520. However, the top plate 531 may be a plate formed independently from the top surface of the buffer hopper 520, and may be formed in two or more layers with a space between them. The top plate can connect the excavator connector and the grid-type distributed structure as one piece.

Additionally, the skeleton structure 530 may include a distribution structure 532 formed on the lower side of the top plate to distribute the load acting on the excavator connector. The distributed structure 532 may be formed by extending multiple reinforcing materials in a grid in the front-back and left-right directions to support the load. The distributed structure 532 may be made of a plate or a steel bar or steel pipe.

Furthermore, the skeleton structure 530 may be integrally composed of one or more vertical members 533 vertically connected to the grid-type distributed structure to withstand resistance or pressure caused by the soil when forming a trench in the soil. In other words, the vertical member 533 can be understood as extending integrally from the upper surface plate 531 to a lower side than the lower end of the buffer hopper.

Referring to FIGS. 9 to 12 , the vertical member 533 is formed along a lower portion extending downward from the bottom of the buffer hopper and may include a trencher 5331 that tapers toward the front. A trench can be understood as a small, narrow ditch formed in the soil that is deeper than it is wide. The trencher 5331 is formed to taper forward on the lower side of the vertical member 533 arranged along the side direction, so that a trench can be formed in the soil as the laying attachment 500 moves in the working direction (forward). there is. Solidifying material can be filled in the trench through the discharge port opened at the rear of the trencher.

Meanwhile, the vertical member 533 extends downward from both sides in the lateral direction of the discharge hole so that the solidification material fills the trench formed by the trencher. It may further include a discharge guide plate 5332 connected to the rear of the trench. . That is, the discharge port 521 is formed on the bottom of the buffer hopper 520 as many as the number of trenchers 5331, and a discharge guide plate 5332 is formed that is integrally connected to the discharge port and the rear of the trencher to block both sides of the trench. The fire can be allowed to fill the trench by gravity with minimal friction.

Referring to FIGS. 13 to 15, the outlet opening and closing device 540 opens the outlet when the installation attachment forms a trench in the soil and moves along the work direction, and closes the outlet when the placement of solidified fire of the installation attachment is stopped. . For example, stopping the laying of solid fire may mean that the laying attachment is raised by an excavator, and the discharge opening and closing device 540 may be provided to close the discharge opening according to the rising of the laying attachment.

The outlet opening and closing device 540 has an opening and closing rotation axis 541 extending in the lateral direction from the rear of the trencher 5331, and extends from the opening and closing rotation axis toward the soil side, depending on the pressure exerted by the soil according to the movement of the laying attachment in the working direction. A soil resistance member 542 that rotates the opening and closing rotation shaft, an opening and closing door 543 that rotates in conjunction with the opening and closing rotation shaft and opening and closing the discharge port according to the rotation of the opening and closing rotation shaft, and the opening and closing when the pressure exerted by the soil is released. The door may include a closing element 544 that is actuated to close the outlet.

With the opening/closing door 543 blocking the discharge port 521, the soil resistance member 542 is integrally connected to the opening/closing rotation axis 541 formed of a steel bar or steel pipe so that the soil resistance member 542 faces the ground, When the installation attachment 500 moves while forming a trench, the door opens in conjunction with the soil resistance member, and when the installation attachment 500 is lifted by an excavator, the door 543 can be restored to close. The closing element 544 may be provided as a torsion spring, and when the pressure due to the soil is released, the opening/closing rotation shaft 541 rotates again to restore the opening/closing door 543 to the state of closing the discharge port 521. It may be possible.

The opening/closing door 543 extends downward from the opening/closing rotation shaft 541 and then is bent and extended forward to block the discharge port 521 according to the rotation of the opening/closing rotation shaft. The opening/closing door 543 can be closed obliquely in a diagonal direction. As the opening/closing door 543 obliquely blocks the space formed by the discharge port 521 and the discharge guide plate 5332, the discharge port can be more stably blocked by horizontal and vertical forces.

Referring to FIG. 16, the installation depth control device 550 may be provided to adjust the protruding length of the trencher 5332 that forms a trench in the soil. The installation depth control device 550 can achieve the purpose of fixed-rate mixing by making the depth of the solidification fire buried by keeping the depth of the trench formed in the soil constant. The blade 551 extending from the front of the vertical member in the lateral direction can flatten the soil in front of the trencher 5332. The blade 551 is connected to the outermost vertical member 533 in the lateral direction and can move up and down through hydraulic pressure from a hydraulic line connected through the excavator arm, and by adjusting the height of the blade 551. The depth of the trench can be adjusted.

Referring to FIGS. 17A to 17C, the soil covering plow 560 can prevent the solidified material from scattering by covering the solidified material filled in the narrow and deep trench (T) formed in the soil (Soil) with soil. The soil covering plow 560 extends in the lateral direction from the rear of the vertical member 533 or the trencher 5332 to cover the soil after laying the solidification material. The plow blade 561 extending to the lower side of the soil covering plow 560 may be formed to be sharp toward the bottom, and the plow blade 561 may be disposed between neighboring trenchers along the lateral direction. That is, the plow blades 561 are arranged to be staggered along the side direction with the trencher 5332, so that the soil between the trenches (T) can be moved onto the trench (T) to cover the solidified material with soil.

Referring again to FIG. 16, the air filter 570 is connected to an opening formed on one side of the buffer hopper to prevent the solidified material from scattering when the solidified material is discharged from the buffer hopper 520. When the solidified material is discharged from inside the buffer hopper 520, air may flow into the internal space of the buffer hopper 520 instead of the solidified material to ensure smooth discharge of the solidified material. An air filter can be installed in the opening formed on the upper surface of the buffer hopper to allow air to flow in. The air filter 570 may be provided to prevent solidified material from leaking out of the buffer hopper 520.

Referring to FIG. 18, the integrated surface solidification attachment 600 according to another embodiment of the present application spreads solidification material in the soil as the integrated surface solidification attachment moves along the work direction due to the movement of the boom and arm of the excavator. While doing so, the laid solid fire material and soil can be stirred. The integrated surface solidification attachment 600 can be understood as being additionally provided with a rotary mixer 21, which will be described later, to the above-described laying attachment 500. The rotary mixer 21 may extend laterally from the lower portion of the buffer hopper 520 and the rear of the trencher 5332 that forms a trench in the soil. The rotary mixer 21 will be described later. In addition, the integrated surface solidification attachment 600 may further include, in addition to the rotary mixer 21, sub-components of the stirring attachment 20, which will be described later, for example, a skeleton structure 22, a hydraulic motor unit 24, etc. .

In addition, the integrated surface solidification device in which the integrated surface solidification attachment 600 is mounted on the excavator 100 mixes the laid solidified material and the soil while laying solidified material in the soil as the integrated surface solidification attachment moves along the working direction. can do.

Referring again to FIG. 1, the solidified material placement device controls the operation of the transfer device 320 according to the amount of solidified material stored in the buffer hopper 520, thereby preventing the solidified material from being stored in the buffer hopper 520 more than necessary. An overfilling prevention device 700 may be further included. The overfill prevention device 700 includes a level sensor (not shown) that measures the level of the solidified material stored inside the buffer hopper and controls the operation of the transfer device according to the level of the solidified material inside the buffer hopper measured by the level sensor. It may include a transfer device control unit (not shown).

Since the work of the excavator may not always be continuous depending on site conditions, the buffer hopper 520 must be prevented from being filled with solidified material exceeding its capacity. Therefore, the hospital installs a level sensor on the upper part of the buffer hopper to control and stop the operation of the transfer device 320 when the storage amount of solidified fire exceeds a certain amount, and when the solidified fire is discharged and free space in the buffer hopper is detected, the transfer device is restarted. By operating (320), solidified material can be filled into the buffer hopper.

Hereinafter, the stirring attachment 20, which is mounted on the excavator 100 after laying the solidification material and can stir the raw soil and the solidification material, and the surface solidification stirring device equipped with the stirring attachment will be described. Referring to FIG. 19, the stirring attachment 20 is detachably coupled to one end of the excavator and is configured to substantially perform the soil solidification work, mixing the base soil with the powdery solidification material to form solidified soil.

Referring to FIG. 20, when performing a stirring operation using the stirring attachment 20, the stirring attachment does not move in the direction of the stirring operation only by the pulling or pushing force of the boom and arm of the excavator. As the rotary mixer of the stirring attachment rotates, the stirring blade of the rotary mixer crushes the aggregated raw ground and mixes it with the powder solidification material that has already been laid, and the stirring attachment finely chops the raw ground soil with almost no voids between the ground particles. By breaking it down and preventing it from re-agglomerating, it is converted into solidified soil with a lot of pores. When raw ground soil is converted to solidified soil, the volume increases, unit weight decreases, adhesion significantly decreases, and fluidity increases due to many pores. As a result, the raw ground soil at the front, which is the direction of the mixing operation of the rotary mixer, is converted to solidified soil and is transferred to the rear by the rotation of the rotary mixer. When the raw ground soil is converted to solidified soil and moved to the rear, creating an empty space in the front, the excavator can move the stirring attachment in the direction of stirring work by minimizing the pushing or pulling force of the boom and arm.

As shown in FIGS. 19 and 21, the stirring attachment 20 is a rotary mixer 21 provided to grind and mix the raw ground soil and the solidified material by rotation, and is fixed while surrounding the upper part of the rotary mixer to the excavator. A skeleton structure (22) that transmits the force, a skeleton cover (23) that covers the skeleton structure to prevent the solidified material from scattering, and a hydraulic motor unit (24) that generates a rotational driving force by hydraulic pressure supplied from the excavator. , it may include a compaction roller 26 that compacts and remixes the solidified soil, and at least one support leg 27.

Referring to FIGS. 22 and 23, the rotary mixer 21 is configured to pulverize and mix the raw soil and the powdery solidified material while rotating along the rotary axis by a rotary driving force. The rotational driving force transmitted to the rotary mixer 21 may be transmitted from a hydraulic motor, which will be described later. The rotating mixer includes a rotating shaft 211 formed of a steel bar or steel pipe, a rotating cylinder 213 fixed to the rotating shaft and having an enlarged radius, and a plurality of stirring blades 215 provided on the surface of the rotating cylinder and extending to one side from the rotating cylinder. ) may include.

The rotation axis 211 is the axis that becomes the rotation center of the rotary mixer, and the rotary mixer rotates around the rotation axis in the shape of a steel bar or steel pipe. The rotation axis 211 may extend in the transverse direction, which is a direction perpendicular to the front, which is the direction of the stirring operation. The lateral direction may be a direction parallel to the ground. As described later, in order to provide large power and fast rotational force, two or more hydraulic motors of the hydraulic motor unit 24 may be installed in pairs on both sides of the rotating shaft, and the driving force on both sides of the rotating shaft may be applied to one rotating shaft. It works. When the driving forces on both sides are different, twisting occurs in the rotating shaft equal to the difference in driving force, so it is preferable that the rotating shaft 211 has a circular cross-section such as a steel pipe or steel bar that is most effective in resisting twisting.

The rotating cylinder 213 is connected to the rotating shaft and rotates in conjunction with the rotating shaft, substantially expanding the radius of the rotating shaft 211. The rotating cylinder 213 extends in the transverse direction like the rotating shaft, and can mediate effective soil grinding and mixing by having a stirring blade disposed on the surface. In a preferred embodiment, the rotating cylinder 213 may have a cylindrical shape extending in the transverse direction, but may also have a rotating body shape whose cross-section size changes as it extends in the transverse direction, and may also have a non-circular cross-section. It can be understood by those skilled in the art.

The stirring blade 215 extends from the surface of the rotating cylinder 213 to substantially pulverize and mix the soil. The stirring blades 215 may be arranged in plural numbers to protrude from the circumferential surface of the rotating cylinder. The stirring blade 215 is provided to crush gravel or rocks mixed in the soil while pulverizing and mixing the soil. As shown in FIG. 10, at least some of the stirring blades 215 are blades that induce the solidified soil primarily mixed by the rotation of the rotary mixer 21 to enter the free space 25a, which will be described later. It can be provided in any shape. In one embodiment, with respect to the transverse direction in which the rotation axis extends, at least some of the stirring blades 215 may be formed at an angle toward the middle. That is, at least some of the stirring blades 215 may extend from the surface of the rotating cylinder 213 extending along the transverse direction toward the free space described later. In another embodiment, the stirring blade 215 may extend to one side from the circumferential surface of the rotating cylinder and then be bent toward the middle of the transverse direction where a free space is formed. The stirring blade 215 may have a different shape that guides the soil or solidified soil toward the free space.

In addition, the plurality of stirring blades 215 are at least partially on the circumferential surface of the rotating cylinder to induce the solidified soil primarily mixed by the rotation of the rotating mixer 21 to enter the free space 25a. It can be arranged in a spiral shape. Through this, when the rotating shaft 211 and the rotating cylinder 213 rotate, the stirring blade 215 excavates the original ground soil on one side of the rotating mixer, and the solidified soil primarily mixed due to excavation is stored on both ends of the rotating cylinder. It can be moved to the free space side in the center. The spiral shape in which at least some of the plurality of stirring blades 215 are arranged may be in a form that guides the solidified soil from both ends to the middle in the transverse direction in which the rotation axis extends. The spiral shape is such that the solidified soil pumped up by the stirring blades 215 formed on both ends of the transverse direction is relatively pumped up again by the stirring blade 215 formed on the middle side of the transverse direction, creating a free space on the center side of the transverse direction ( 25a) can be gathered together. The spiral shape is such that when the rotary mixer 21 rotates, the stirring blades on both ends in the transverse direction scoop up the soil first and the stirring blades on the center side scoop up the soil later, so that the rotary mixer moves from the transverse ends of the rotating cylinder toward the center. It may extend in a direction opposite to the direction of rotation. In a preferred embodiment, the spiral shape may be symmetrical about its center.

Referring to FIGS. 24A to 24C, the stirring blade 215 includes an extension body 2151 extending to one side from the rotating cylinder, and a bit 2153 provided at one end or one side of the extension body to be detachable from the extension body. may include. The bit 2153 may be made of a mineral or metal that can crush gravel or rocks mixed into the soil. At least a portion of the bit 2153, including one end, may be made of diamond or a special metal. The bit 2153 may include a connection portion 2151a connected to the extension body 2151 and a tapered portion 2153b extending from the connection portion 2151a and substantially crushing the soil. The bit 2153 is detachably attached to the extension body 2151 and can be replaced.

In the stirring blade 216 according to another embodiment of the present application shown in Figure 24c, the extension body 2161 has a receiving groove 2161a for detachably receiving the bit 2163, and the bit is placed in the receiving groove. (2163) is accepted and soil can be excavated. At this time, the fastening member 2165 that fastens the bit 2163 and the extension body 2161 may penetrate the bit and be inserted into the fastening groove 2161b of the extension body.

With reference to FIG. 25, soil pulverization mixing of the rotary mixer 21 will be described. The solid arrow shown in FIG. 25, that is, the arrow pointing from the rotary mixer toward the skeleton cover 23, indicates the path along which the raw ground soil or solidified soil moves by the rotation of the stirring blade 215 of the rotary mixer, and the dotted line arrow, i.e., the skeleton cover The arrow pointing from the side to the bottom is the path along which the particles that are protruded or scattered when the original soil or solidified soil hits the skeleton cover 23 move by gravity. In area a, most of it exists as raw ground soil, and because it is pumped in the tangential direction of the rotation axis from below the rotation axis 21, it does not fall backwards but falls back in front of the rotation mixer. In area b, the original soil and solidified soil are mixed, and this is an area where the original soil and solidified soil are pumped vertically and then fall vertically. Area c contains mostly solidified soil, and is an area where solidified soil accumulated in front of the rotary mixer or falling back from area b is moved to the rear of the rotary mixer. Zone d is all solidified soil, and is the zone where the solidified soil is moved to the rear of the rotary mixer. In zones a and b, the original soil is mixed with powdered solidification material and converted into solidified soil.

Referring to the soil pulverization mixing of the rotary mixer 21 described above and FIGS. 20 and 25, the rotary mixer 21 and the hydraulic motor 241 are centered around the rotary shaft 211. The lower portion may rotate forward in the direction of the stirring operation, and the upper portion may be rotated in a first rotation direction in which the upper portion rotates backward in the direction opposite to the stirring operation. In other words, the rotary mixer 21 of the present invention rotates in the opposite direction to the wheel that rolls toward the work direction. Alternatively, when the stirring attachment 20 moves toward the excavator 10 in the left direction, the rotary mixer rotates clockwise. The rotary mixer 21 can be seen as similar to a wheel or tire in that it rotates around the rotation axis 211, but the rotary mixer 21 of the present facility pumps the raw soil from the bottom to the top through rotation, The raw ground soil is multiplied and mixed through zones a and b of Figure 25 to efficiently stir the raw ground soil to form solidified soil, and the movement of the stirring attachment 20 in the direction of the stirring operation is carried out by the arm of the excavator 10. and can be performed by a boom.

Figure 26 shows that the rotary mixer 21 pulverizes and mixes the raw soil to form solidified soil. Here, R is the maximum rotation radius from the rotation axis to the end of the stirring blade, S is the length of the stirring blade, w is the radius of the rotating cylinder, D is the depth of solidification, h is the mixing height, and R-D is the original ground formed by the original soil from the rotation axis. It is the height of the ground.

The raw ground must be located lower than the height of the rotation axis 211 so that the stirring blade does not fall behind the rotary mixer while scooping up the raw ground soil, so R-D must have a value greater than 0. Only when this condition is satisfied, the raw ground soil goes through a mixing process in front of the rotary mixer 21 and is converted to cured soil, and its volume increases to accumulate at the rear of the rotary mixer.

The height at which the solidified soil is piled up on the ground of the original ground in front of the rotary mixer 21 is the mixing height (h), and the mixing height (h) must be higher than the height of the rotation shaft to transfer the mixed soil to the rear of the rotary mixer. The solidified soil that passes to the rear of the rotary mixer may accumulate in the front, but may also float within the framework cover due to the continuously raised stirring blade.

Meanwhile, even if the radius of the rotating cylinder 213 and the length ratio of the stirring blade 215 are different, the rotating speed of the rotating mixer is the same, so mixing is performed according to the value of (stirring blade length (S)/rotating cylinder radius (w)) Degrees may vary.

Soil in soft ground has very high adhesion, and due to the fluidity of the soil, friction and adhesion apply to the entire area of the rotary mixer. If the radius of the rotating cylinder is small and the length of the stirring blade is too long, the mixing blade must be very thick to overcome the resistance of the soil. Conversely, if the length of the stirring blade is very short and the rotating cylinder is that large, the friction due to adhesion is very large. This causes mixing and transport of solidified soil to be performed inefficiently. Therefore, because soft ground that requires solidification work is mostly viscous soil with high water content and high adhesive force, a stirring blade length of an appropriate ratio is required for viscous soft ground. The stirring blade length (S) relative to the rotating cylinder radius (w) is required. ) The appropriate ratio is 70±10%, that is, 60 to 80%.

Most of the soft ground where surface solidification is performed has a very high water content. Looking at the results of a typical solidification work site, the unit weight of the raw ground soil is 1.8 ton/m ³ and the unit weight of the solidified soil is 1.3 ton/m ³ , and the unit weight reduction ratio when solidification work is performed is 0.722. The volume increase rate during solidification is the reciprocal of the unit weight decrease rate, which is 1.38 times. The mixing height (h) can be determined according to the equation below.

Additionally, the formula for determining the appropriateness of the stirring blade length is as follows.

Meanwhile, the mixing height varies depending on the ratio of the radius of the stirring blade 215 and the rotating cylinder 213. If the stirring blade is too long, the mixing height (h) becomes excessively high, making normal mixing impossible. If the radius of the rotating cylinder is too long compared to the stirring blade, the mixing height (h) becomes excessively low, making normal mixing impossible. Table 1 below is a table evaluating the adequacy of mixing height and stirring blade length according to the exemplary rotary mixer shown in FIGS. 27A to 27C.

Case according to the embodiment of the present application Stirring blade length
long case The radius of the rotating cylinder is
long case yes Figure 27a Figure 27b Figure 27c Rotating cylinder radius (w) 330mm 150mm 470mm Stirring blade length (S) 230mm 410mm 90mm Maximum turning radius (R) 560m 560mm 560mm Solidification depth (D) 400mm 400mm 400mm Mixing height (h) 386mm 1,514mm 106mm R-D 160mm 160mm 160mm Stirring blade length (S) /
Rotating cylinder radius (w) 70% 273% 19% Mixing height (h) / (R-D) 2.4 (suitable) 9.5 (unsuitable) 0.7 (unsuitable)

Additionally, Table 2 below is an exemplary table evaluating the appropriateness of the stirring blade length.

Stirring Blade Length
Example of lower limit Example from our institution Stirring Blade Length
Example of upper limit Rotating cylinder radius (w) 350mm 330mm 311mm Stirring blade length (S) 210mm 230mm 249mm Maximum turning radius (R) 560m 560mm 560mm Solidification depth (D) 400mm 400mm 400mm Mixing height (h) 332mm 386mm 443mm R-D 160mm 160mm 160mm Stirring blade length (S) /
Rotating cylinder radius (w) 60% 70% 80% Mixing height (h) / (R-D) 2.1 (suitable) 2.4 (suitable) 2.8 (suitable)

Referring again to FIGS. 19 and 21, the skeletal structure 22 is provided on the upper side of the rotary mixer 21 and can transmit force from the boom 103 and arm 104 of the excavator. The soil of soft ground has a high water content, so a lot of resistance such as shear resistance occurs when agitated. The moment acting on the stirring attachment can be supported through the skeletal structure. Additionally, when the excavator's arm and boom move in a predetermined direction, the skeletal structure can distribute force and resist moment. The skeletal structure may include a grid frame 221, a receiving frame 222, a side frame 223, and a side plate 225.

Referring to FIG. 28, the grid frame 221 may be spaced apart from one end of the rotary mixer and may be provided in a form that surrounds the upper part, the front part, and a portion of the rear part of the rotary mixer. The grid frame 221 may be provided to fix the rotary mixer 21 so that it can be rotated by the rotational driving force transmitted from the hydraulic motor 241 of the hydraulic motor unit 24. The grid frame 221 may be a structure necessary to transmit power when applying a large force capable of mixing soil through the hydraulic pressure of the boom, arm, and attachment cylinder on the stirring attachment 20 when using an excavator. there is. The lattice frame 221 is a reaction force when the rotary mixer 21 is driven by the hydraulic motor unit 24, or when the arm is driven in the lateral direction of the construction equipment equipped with the stirring attachment 20. It can be provided in a lattice form considering structural resistance to reaction. The grid frame 21 forms a frame having a grid shape by intersecting a first extension member 2211 extending in the direction of the stirring operation and a second extension member 2213 extending in the transverse direction, and the first extension member ( 2211) can be formed so that the front and rear portions are bent and extended downward to effectively support the moment acting on the stirring attachment 20 and effectively prevent scattering of the soil that is ground and mixed on the lower side of the lattice frame.

As shown in FIG. 23, the skeletal structure may form an arrangement space between the rotary mixer 21 and the grid frame 221 in which the hydraulic motor unit 24, which will be described later, can be arranged. That is, the rotary mixer 21 and the grid frame 221 are spaced apart from each other by a predetermined distance in the vertical direction, and the hydraulic motor 241 of the hydraulic motor unit 24 can be placed therein.

The receiving frame 222 may extend at least in the transverse direction from the lower side of the grid frame 221 and the upper side of the rotary mixer. The receiving frame 222 extends between the grid frame 221 and the rotary mixer 21, and thus can accommodate the hydraulic motor unit 24 on the upper side of the receiving frame 222. The receiving frame 222 includes a central portion 2221 extending from the center to both sides in the transverse direction, a bent portion 2223 bent from both transverse ends of the central portion 2221 toward the lower side or toward the rotary mixer 21, and a bent portion of the bent portion. It may include both end portions 2225 extending from both ends along the transverse direction.

Additionally, the receiving frame 222 may include a crushing rib 222a that protrudes downward from the lower side of the receiving frame toward the free space 25a. The pulverizing ribs 222a extend in the rotational direction of the rotary mixer, that is, in the direction of the stirring operation, and can secondarily pulverize and mix the primary mixed solidified soil. The pulverizing rib is provided on the upper side of the free space 25a where the mixing portion described later is formed, so that the solidified soil pumped up by the stirring blade can be further pulverized or mixed by the pulverizing rib 222a.

In one embodiment, instead of the receiving frame 222, the grid frame 221 is formed in two stages spaced apart vertically, and a pair of hydraulic motors 24 of the hydraulic motor unit are accommodated at both ends in the lateral direction between the two stages of the grid frame. It may be possible. At this time, when the lower grid frame extends in the transverse direction, it may be bent downward or towards the rotary mixer 21 and then extended again in the transverse direction.

Referring to FIGS. 23 and 28, the side frame 223 extends downward from both sides of the central portion of the grid frame 221 to the axis of rotation, and is formed so that the strong axis of the cross section of the member is perpendicular to the direction of extension of the axis of rotation. Both ends of the rotation axis can be supported. The side frame 223 includes a pair of first extension parts 2231 extending in the transverse direction on the grid frame 221, and a pair of second extension parts bent downward and extending from one end of the first extension part ( 2233) and a connection portion 2235 connecting a pair of second extension portions. The second extension portion 2233 and the connecting portion 2235 form an opening 223a to accommodate a portion of the hydraulic motor on the upper side of the opening 223a and a portion of the rotating shaft 211 on the lower side.

The side plate 225 may be integrally connected to the grid frame 221 and the side frame 223, and may have a flat bottom. The lower end of the side plate 225 may extend parallel to the ground and along the direction of the stirring operation. In one embodiment, the side plate 225 is substantially in contact with the ground and can guide the pulverizing mixing of the raw ground soil of the rotary mixer 21, so that one end of the stirring blade 215 extending to one side from the rotary cylinder 213 The stirring blade may be exposed by extending longer than the lower end of the side plate 225. Preferably, one end of the stirring blade may be exposed by 400 mm or more than the lower end of the side plate.

As shown in FIGS. 19 and 21, the skeleton structure 22 may further include an inlet guide 226 at the front in the direction of the stirring operation and an outlet guide 227 at the rear in the opposite direction. The inlet guide 226 is composed of a plurality of chains and has a shape that surrounds and accommodates irregular ground, thereby preventing soil or stones from sticking out due to the rotational force generated by the rotary mixer. Meanwhile, the outflow guide 227 is provided to guide soil that flows into or out of the stirring attachment 20, and has a plurality of ribs extending up and down, so that the inflow and outflow of soil can be relatively uniformly selected.

Referring to FIG. 29, the skeleton cover 23 is configured to cover the grid frame 221 to prevent some of the flying dust generated when the rotary mixer is rotated by the hydraulic motor unit from leaking out. The cover may be coupled to the grid frame 221 from the outside of the above-described grid frame 221. Like a lattice frame, the front and rear portions of the cover are bent and extended downward, effectively preventing scattering of ground and mixed soil from the lower side.

As shown in FIG. 30, at least one maintenance door 231 formed as an opening that can be selectively opened and closed may be disposed on the skeleton cover 23. The maintenance door 231 may be provided to be openable and closed at a location communicating with the above-described arrangement space 25. Through the maintenance door 231, soil with a high moisture content accumulated inside the stirring attachment can be easily removed and easy access is possible for maintenance inside the stirring attachment. As shown in Figure 31, in another embodiment of the present application, at least one maintenance door that can be opened and closed may be provided on the side plate 225.

Referring again to FIGS. 21 and 23, the hydraulic motor unit 24 may be provided to generate rotational force through hydraulic pressure and transmit the rotational force to the rotary mixer. The hydraulic motor unit 24 may include a pair of hydraulic motors 241. The hydraulic motors 241 may be arranged to be spaced apart from each other in the horizontal direction in the arrangement space and may be connected to both ends of the rotation shaft 211, respectively. The rotational force generated by the hydraulic motor may be transmitted to the rotation shaft 211. The hydraulic motor 241 can be accommodated in the arrangement space between the grid frame 221 and the receiving frame 222. In order to transmit rotational force, a pulley or chain connecting the hydraulic motor and the rotating shaft may be provided, or a member that transmits other rotational driving force may be provided. It is desirable to install hydraulic motors of the same specifications so that the same force acts on both sides of the hydraulic motor 241, and even if two or more are installed, an even number of hydraulic motors are paired at both ends of the rotation axis 21 in the transverse direction. It is desirable to have it available.

Compared to the case of conventional weeders or vegetation removal devices in which resistance acts locally, equipment such as conventional weeders can be driven with relatively significantly less force. Therefore, a hydraulic motor with a smaller capacity is used compared to solidification work, and it is sufficient to utilize the driving force by installing only one hydraulic motor on one side. Such conventional equipment usually does not have a cover to prevent scattering or a roller for compaction. Meanwhile, in our case, a large force is required to stir the raw soil, so a hydraulic motor can be connected to both ends of the rotating shaft to transmit a large force.

Referring again to FIG. 23, as described above, an arrangement space 25 in which the hydraulic motor unit 24 can be arranged may be formed between the rotary mixer 21 and the grid frame 221. At this time, with respect to the arrangement space 25, the hydraulic motor 241 is provided on both sides of the rotation axis, so that it is located between the rotary mixer 21 and the lower end of the receiving frame 222 or the grid frame 221. A space may be formed in which the central portion is wider than the two side portions. That is, a spare space 25a in which the hydraulic motor is not disposed may be formed between the pair of hydraulic motors 241. The free space 25a is a first separation distance in which the vertical distance between the lower end of the receiving frame 222 or the grid frame 221 as a part of the skeletal structure and the upper end of the rotary mixer 21 is relatively long. You can have it. In the portion where the hydraulic motor is disposed, a non-free space 25b having a second separation distance where the vertical distance between the skeleton structure 22 and one end of the rotary mixer 21 is relatively short may be formed. . As shown in FIG. 23, non-free space 25b may be formed on both sides of free space 25a.

At this time, when stirring and mixing the soil, the non-free space 25b functions as an excavation part where the stirring blade 215 scoops up the soil and collects it toward the first part, and the free space 25a functions as a mixing part where the excavated soil is mixed and pulverized. can do. The stirring blades 215 arranged in a spiral arrangement on the rotating cylinder 213 are formed at an angle toward the central free space 25a so that the excavated soil can be collected toward the center. A rotating mixer equipped with a hydraulic motor 24 An excavation part is formed in the non-free space 25b, which is on both sides of the space between the and the grid frame, and a mixing part in which the soil is mixed is formed on the side of the central free space 25a, which is not equipped with a hydraulic motor, to dig up the soil and send it to the center. After excavating the soil on both sides toward the center, allow the soil and solidification material to be mixed in a wide space.

Referring to Figures 32 and 33, the compaction roller 26 is provided on one side of the rotary mixer to compact and remix the solidified soil collected in the mixing unit. Preferably, the compaction rollers 26 may be arranged at intervals rearward in a direction opposite to the direction of the stirring operation with respect to the rotary mixer. As described above, soil is sent from the excavation section formed in the non-free space 25b on both sides of the rotary mixer 21 to the mixing section formed in the center free space 25a, and mixing of soil and solidified material is mainly carried out in the mixing section. When this is done, more solidified soil will accumulate in the center than on both sides in the horizontal direction. By the compaction roller 26 according to an embodiment of the present application, some of the solidified soil placed at the rear of the rotary mixer is piled up relatively more in the middle portion in the lateral direction than in both sides of the lateral portion due to the free space. It can be moved and compacted on both sides in the transverse direction. As shown in Figure 34, when the soil pulverized and mixed in the rotary mixer 21 is compacted through the compaction roller, more soil and solidification material are mixed, and the soil quality of the solidified soil can be further improved. The compaction roller 26 may rotate in a second rotation direction opposite to the first rotation direction. As described above, the rotary mixer 21 rotates by the power of the hydraulic motor 241, and the lower side rotates forward in the direction of the stirring operation around the rotation axis, and the upper side rotates backward in the direction opposite to the stirring operation. Compared to having a rotation direction, the compaction roller 26 compacts the solidified soil by rolling on the solidified soil as the stirring attachment 20 moves forward in the direction of the stirring operation, so it compacts the solidified soil in the rotational direction of the rotary mixer 21. It rotates in the second rotation direction opposite to the first rotation direction. The compaction roller 26 may include a rotating shaft 261 and a compaction unit 263.

The rotation axis 261 is spaced a predetermined distance from the rotation mixer 21 at the rear of the rotation mixer 21, that is, on the opposite side of the stirring operation direction, and extends in the transverse direction parallel to the rotation axis 211 of the rotation mixer 21. In this configuration, it can be extended to a length corresponding to the extended length of the rotary mixer (21). As the stirring attachment 20 moves in the direction of the stirring operation, the compaction roller 26 can move the solidified soil, and the rotation axis 261 can rotate by compacting the solidified soil as the compaction roller 26 moves. there is. However, the rotation shaft 261 is not excluded from being rotated by a power source such as a motor.

The compaction unit 263 has a substantially cylindrical shape that rotates in conjunction with the rotation shaft 261, and compaction blades 263a can be formed at predetermined intervals on the outer peripheral surface.

Referring to FIGS. 35A and 35B, the support leg 27 extends to one side from the skeletal structure 22, and is optionally lowered so that one end protrudes beyond one end of the rotary mixer 21. One end of (21) may rise to protrude beyond the one end. The support legs 27 may be provided in plural numbers centered on the rotary mixer 21. The support leg 27 performs a guide function of the ground on which the solidification operation is performed together with the side plate 225 when the solidification operation is performed as shown in Figure 35a, and when the solidification operation is not performed as shown in Figure 35b, it descends The stirring attachment 20 can be supported so that the stirring attachment 20 does not fall over. The support leg 27 may include a height adjustment part 271 that can be raised and lowered relative to the rotary mixer, and a support part 273 with one end bent upward while forming a support surface.

The height adjustment unit 271 is configured to extend downward from the skeletal structure, and has a pin hole formed on the side so that the height can be adjusted and then the height of the support leg can be adjusted with a fixing pin. The height adjustment unit 271 may be fixed by a mounting member 271a formed on the side plate 225, and the mounting member 271a may have a shape capable of holding a fixing pin. The height adjustment unit is not limited to the above-described embodiment and may be provided in other configurations that enable the height adjustment unit extending from the skeletal structure and the lattice frame to be raised and lowered. The support part has front and rear ends bent and extended upward to minimize soil resistance when guiding and supporting.

The support portion 273 is configured to extend flatly at least in part from the bottom of the height adjustment portion 271, and may preferably extend forward and backward. The front or rear portion of the support portion 273 can be bent and extended upward to minimize soil resistance when performing solidification work or raising and lowering the support leg.

Referring to Figure 36, the high fire installation device of the present application may further include a rotating link 30. The rotating link 30 may be mounted between the connector 510 of the installation attachment 500 and the connector 106 of the excavator. Alternatively, it may be mounted between the skeletal structure 22 of the stirring attachment 20 and the connector 106 of the excavator. The rotation link 30 may be rotatable about an axis in the normal direction of the connection surface on the connector 106 side. Here, the connection surface may mean a surface where the rotary link 30 engages with the rapid hydraulic link 40. However, when the rotary link 30 is not engaged with the rapid hydraulic link 40 in a plane shape, the normal line is broadly understood to refer to the direction in which the link is substantially connected to the arm side part to which the rotary link 30 is coupled. This is desirable.

The rotating link 30 allows the laying attachment or stirring attachment to rotate while maintaining a parallel state with respect to the ground, and the rotating link 30 rotates the stirring attachment 20 to control the direction of the stirring operation. . If the stirring operation is performed with the excavator fixed without the rotating link 30, the areas where the stirring was performed on the original ground soil overlap, as shown in Figure 37, and the solidification operation becomes uneven and inefficient. A problem arises. In one embodiment of the present application, as the excavator arm 104 rotates, the rotation link causes the laying attachment and the stirring attachment to rotate while maintaining a parallel state with respect to the ground, thereby solidifying the fire material while maintaining a constant working direction as shown in FIG. 38. Laying work and stirring work can be performed. When the ground is not flat, the rotation link 30 can rotate the laying attachment 500 or the stirring attachment 20 while maintaining a parallel state with respect to a portion of the ground. In an embodiment of the present application as will be described later, the arm 104 of the excavator detects the first angle r1 rotating in a state parallel to the surface solidification target ground, and the rotation link 30 is connected to the installation attachment 500. ) Alternatively, the stirring attachment 20 can be rotated by the first angle r1 in the opposite direction. Referring to FIG. 38, when the arm 104 of the excavator is rotated by a first angle (r1) with respect to the center line of the excavator, the rotation link 30 rotates the arm 104 by a first angle (r1) with respect to the center line of the arm. By rotating in the opposite direction, the work center line can be controlled to be parallel to the excavator center line. As a specific example, when the arm 104 is rotated by a first angle (r1) counterclockwise with respect to the center line of the excavator, the rotation link 30 is rotated by a first angle (r1) clockwise with respect to the center line of the arm to line the work center line. and the center line of the excavator can be maintained parallel. This concept of maintaining parallelism through rotation can be easily understood through the principle of co-orientation. Through this, even if only the arm 104 is moved while the lower body of the excavator 100 is stopped, constant rate mixing and constant rate stirring of the solidified material can be performed with the working directions of the laying attachment and the stirring attachment facing a certain direction.

In another embodiment, the rotating link 30 is installed so that the working direction by the laying attachment 500 or the stirring attachment 20 is perpendicular to the straight line connecting the laying attachment or stirring attachment and the excavator, as shown in Figure 39. (500) or the stirring attachment (20) can be rotated. In other words, it may be a work method in which the upper body of the excavator is rotated with the rotary link 30 rotated so as to be perpendicular to the straight line connecting the laying attachment 500 or the stirring attachment 20 and the excavator.

Referring to Figures 40 and 41, the solid fire laying device of the present invention may further include a rapid hydraulic link (40). The quick hydraulic link 40 may be provided to quickly connect the hydraulic flow path of the installation attachment 500 and the hydraulic flow path of the excavator 10. In addition, it may be provided to quickly connect the hydraulic flow path of the stirring attachment 20 and the hydraulic flow path of the excavator 10.

The rapid hydraulic link 40 may be mounted between the connector 510 of the installation attachment and the connector 106 of the excavator. Additionally, the rapid hydraulic link 40 may be mounted between the skeletal structure 22 of the stirring attachment and the connector 106 of the excavator. For solidification work, an attachment that requires hydraulic pressure is absolutely necessary, and a general bucket that does not require hydraulic pressure is also required, and the work must be performed while replacing various types of attachments that require hydraulic pressure, including this. In addition, a plurality of hydraulic passages are required depending on the purpose, and in addition to the hydraulic oil for the hydraulic motor 24, water or liquid solidifying agent to prevent flying dust can be sprayed as needed, so the connection of a water pipe may be required. The rapid hydraulic link 40 allows multiple oil pipes or water pipes to be connected simply by mechanically connecting other attachments, including the laying attachment 500 and the stirring attachment 20, to the excavator connector.

The rapid hydraulic link 40 includes a base 41 extending with a predetermined width, a plurality of hydraulic pipes 42 connecting the hydraulic passage on the excavator 10 side and the hydraulic passage on the attachment side on the base, and an upper side of the base. When connected to the excavator 10, it may include a pair of rods 43 that are coupled to the connector 106 and a connection surface 44 that faces and engages the rotary link. The connection surface 44 is coupled to the rotary link 30 so that the above-described rotary link 30 can rotate the laying attachment 500 or the stirring attachment 20. The rotation link 30 may be rotatable about an axis in the normal direction of the connection surface on the connector 106 side.

In one embodiment, a rapid hydraulic link 40 is provided adjacent to the excavator connector 106 to be connected to the excavator, and a rotary link 30 is provided on the lower side of the excavator connection 106 to connect the laying attachment 500 or the stirring attachment 20. Rapid connection and rotation can be guaranteed. More specifically, for example, the rapid hydraulic link may be located at the end of the excavator arm, and the rotary link 30 may be placed on the attachment side next to the rapid hydraulic link 40. Since the rotating link, laying attachment (500), and stirring attachment (20) can be used after being hydraulically connected, the rapid hydraulic link (40) is used before the rotating link (30), laying attachment (500), and stirring attachment (20). It is desirable to place

Referring to an embodiment shown in FIG. 42, the excavator 100 includes a mist spray device 109 that is provided on the arm or boom of the excavator and sprays fine moisture, and a mist spray device 109 on the excavator to supply liquid to the mist spray device. It may further include a liquid tank 110 provided in . The mist spray device 109 and the liquid tank 110 may be connected through a pipe provided along the boom or arm. Colloids (clay minerals) in the soil adsorb hydrogen ions or metallic cations to neutralize their electrical negativity. Therefore, solidification materials contain calcium (Ca2+), silicon (Si4+), and aluminum (Al3+), which have cationic properties to facilitate adsorption with soil. During solidification, the soil contains a large amount of moisture, but since the solidification material is in powder form, it is easy to scatter. The mist spray device 109 can spray fine moisture toward the stirring attachment to prevent solidification or scattering of soil. When spraying mist (fine water particles) to suppress scattering of cationic solidification materials, it is effective to use water mixed with anionic surfactants, so anionic surfactants may be mixed into the fluid in the liquid tank.

Below, based on the above-mentioned explanation, the surface solidification method and the solidification material placement method using the solidification material installation device will be explained. The surface solidification method of the present application can be performed by the above-described solidification material laying device, and the process of stirring the solidification material and the base soil during the surface solidification method is performed by surface solidification agitation using a stirring attachment (20) instead of the laying attachment (500). It can be performed by a device.

First, referring to FIG. 43, the surface solidification method (S1) according to an embodiment of the present application includes the step of excavating the original ground soil by attaching an excavation bucket to the arm of the excavator (S11), and attaching the laying attachment 500 to the arm of the excavator. A step of attaching the solidified material to the excavator (S12), attaching the above-described stirring attachment 20 to the excavator arm to agitate the raw soil and the solidified material (S13), and stirring the compaction attachment by attaching it to the excavator arm. Comprising the step of compacting the solidified soil (S14) and attaching a tongs attachment or a magnet attachment with magnetic force provided to grip an object to the excavator arm, and placing a bearing force dispersion panel on the solidified ground (S15). Solidification work can be performed on the target ground sequentially. At this time, attachment and detachment of the attachment between each step can be done by quick connection by the quick hydraulic link 40. In the surface solidification method according to an embodiment of the present application, even when the curing period of the ground is not sufficient after performing solidification work on the surface solidification target ground, a bearing force dispersion panel is placed and the excavator 100 enters on top of it to target another target. The construction period can be shortened by solidifying the surface layer of the ground. This is because the lower body 101 of the excavator 100 is provided with an endless track, so that the grounding pressure of the equipment with respect to the ground is sufficiently reduced, thereby minimizing the load effect on the solidified ground before curing is completed. Each step of the surface solidification method (S1) may be omitted depending on construction conditions. For example, step S11 is omitted when solidifying the surface layer of less than 50 cm, so it can be understood that the solidification material is immediately laid without excavating the soil. Additionally, step S15 may be omitted depending on the condition of the solidified soil. For example, in the case of sandy soil with a low moisture content, the curing speed may be very fast or the soil may be solidified to the point where equipment can be entered without a curing process, so step S15 can be omitted.

The surface solidification method (S2) according to another embodiment of the present application shown in Figure 44 includes the step of excavating the original ground soil by attaching an excavation bucket to the arm of the excavator (S21), and attaching the laying attachment 500 to the arm of the excavator. A step of attaching and laying solidified material (S22), a step of agitating the raw ground soil and solidified material by attaching a stirring attachment (20) to the excavator arm (S23), and solidified soil stirred by attaching a compaction attachment to the excavator arm. A compaction step (S24), a step of attaching the excavation bucket to the arm of the excavator and returning a portion of the soil moved to one side to the solidified layer (S25), repeating steps S22 to S25 to reach the top of the target ground. A step of returning the soil to (S26), a step of placing a bearing force distribution panel on the solidified ground where multi-layer solidification has been completed according to steps S21 to S26 (S27), and entering the excavator on the placed bearing force distribution panel to While repeating steps S21 to S27, multi-layer solidification work can be performed sequentially, including the step of advancing the excavator to one side (S28). At this time, attachment and detachment of the attachment between each step can be performed by quick connection using the quick hydraulic link. Each step of the surface solidification method (S2) may be omitted depending on construction conditions. For example, step S27 may be omitted like step S15 described above.

In step S21, the excavation bucket can be attached to the arm of the excavator to excavate the upper layer of the ground soil subject to surface solidification and move it to one side. In step S22, solidification material can be placed in the lower layer of the target ground. When performing multi-layer solidification work, this facility can solidify the target ground even at relatively high and distant points through the arm 104 of the excavator 100, so by using the stirring attachment in combination with the excavator, the Multi-layer solidification can be performed over low depths.

Referring to FIG. 45, step S12 or step S22 can be performed by a solid fire laying device equipped with the above-described laying attachment 500 on an excavator arm, and the powdered solid material supplied from the solid fire supply device 200 After temporarily storing it in the buffer hopper 520 of the laying attachment, as the laying attachment 500 moves in the working direction, the solidified material is laid on the soil at a constant speed and ratio to perform a fixed ratio mixing of the solidified material and the soil. can do. In addition, the installation attachment moves parallel to the surface solidification target ground through the rotating link 30, so that the solidification material can be uniformly laid to perform constant rate mixing. Hereinafter, the description will focus on step S12, but this can be understood as substantially the same process as step S22.

First, powder solidification material can be supplied from the solidification material storage device and temporarily stored in the buffer hopper 520 (S121). At this time, the solidified material can be pressurized and transferred in a dense form through the transfer device 320, and the overfill prevention device 700 can prevent excessive solidified material from being stored in the buffer hopper 520.

Thereafter, the solidification material stored in the buffer hopper 520 can be laid in the soil while moving the laying attachment 500 according to the operation of the excavator 100 (S122). At this time, the laying attachment is moved in the working direction (forward) to form a trench in the soil, and the discharge port is opened according to the movement of the laying attachment to fill the trench with solidified material.

After step S122, the discharge port 521 may be closed as the soil pressure applied to the installation attachment 500 is released. In detail, as the installation attachment 500 is raised by the excavator, the discharge port may be closed by the discharge port opening and closing device 540 (S123).

After laying the solidified material, the top of the solidified material filled in the trench can be covered with soil (S124). This can be accomplished by moving the plow blade extending downward from the soil covering plow 560 at the rear of the trencher 5331 to dig up the soil between the trenches and cover the top of the solid fire.

In step S13 or S23, the stirring attachment may be moved parallel to the surface solidification target ground to stir the soil to a constant thickness to perform constant rate stirring. When stirring the base soil for surface solidification, surface solidification must be performed at a certain depth so that the pre-placed powder solidification material and the base soil can be mixed and stirred at a constant ratio. In order to control the operation of the excavator, the excavator may be additionally equipped with an electronic control device that controls the operation of the arm cylinder, boom cylinder, and attachment cylinder of the excavator. By applying the electronic control device to control the movement or rotation of the stirring attachment, the movement of the excavator arm, boom, or rotating link, the movements required to carry out the surface solidification method of the present invention can be performed. For example, by applying the electronic control device, the stirring attachment can be controlled to move parallel to the surface solidification target ground, and by applying the electronic control device, the rotating link rotates the stirring attachment according to the working length to align it. It can also be controlled to do so. In one embodiment shown in Figure 35, the solidification depth may be 50 cm, the solidification length for one improvement may be 6 m, and the solidification width may be 1.5 m. Accordingly, the amount of work per improvement cycle may be 1.5 m wide, 6.0 m wide, and 0.5 m high, for a total of 4.5 m ³ , and the amount of work per hour (Q) may be as follows.

Referring to FIG. 46, step S13 or S23 includes controlling the movement of the stirring attachment (S31), detecting a first angle at which the arm of the excavator rotates parallel to the target ground (S32), It may include controlling the rotation link according to the first angle (S33). Here, the movement of the stirring attachment 20 may be performed by the excavator arm 104, and the excavator arm 104 may be controlled according to operator operation, a control unit provided in the excavator, or remote control. The step S32 of detecting the first angle may be performed by a sensor provided on the upper body connected to the excavator arm 104, and the step S33 of controlling the rotation link may be performed through operator operation, a control unit provided on the excavator, or a remote control. It can be performed under control. The steps S31 to S33 described above can also be understood as a surface layer solidification method according to another embodiment of the present application. Additionally, the control of the attachment by the rotary link 30 in steps S31 to S33 may be equally or similarly applied to the control of the installation attachment 500 in steps S12 and S22.

In addition, steps S12 and S13 can be performed simultaneously through a device equipped with the above-described integrated surface solidification attachment 600 on an excavator arm, and it can be understood that steps S22 and S23 can be performed simultaneously. .

In one embodiment of the present application, the rotary link 30 is a rotary link such that the stirring operation direction of the stirring attachment 20 is directed in a certain direction, or the solidifying fire laying direction of the laying attachment 500 is directed in a certain direction. The stirring attachment or placement attachment can be rotated by a first angle in the direction opposite to the direction in which the arm 104 is rotated. In order to ensure that the stirring operation direction of the stirring attachment and the solid fire laying direction of the laying attachment 500 are directed in a certain direction, an electronic control device that controls the operation of the arm cylinder, boom cylinder, and attachment cylinder of the excavator is installed on the arm or boom of the excavator. The rotation angle can be detected and the rotation link can be operated according to the rotation angle. As shown in Figure 38, the arm 104 of the excavator detects the first angle r1 rotating about the center line of the excavator in a state parallel to the surface solidification target ground, and the rotation link 30 is a stirring attachment ( 20) Alternatively, by rotating the laying attachment 500 by a first angle r1 in the opposite direction with respect to the arm center line, even if only the arm 104 is moved while the lower body of the excavator 100 is stationary, the stirring of the stirring attachment is achieved. Constant-rate agitation and constant-rate mixing can be performed when the solidified material placement direction of the work and placement attachment 500 is directed in a certain direction.

In another embodiment of the present application, the stirring attachment 20 and the laying attachment 500 may be controlled to move parallel to the surface solidification target ground by rotation of the upper body and arm of the excavator 100. In addition, as shown in FIG. 39, the rotation link determines the direction of the stirring operation by the stirring attachment 20 and the solidified material laying direction of the laying attachment 500 according to the first angle at which the arm 104 of the excavator rotates. It can be made perpendicular to the straight line connecting the and the excavator. By the rotating link, the stirring attachment 20 and the laying attachment 500 may rotate the excavator to agitate the soil at a constant thickness to perform constant rate stirring.

Referring to Figure 47, the surface solidification method (S4) according to another embodiment of the present application includes a step of recognizing the coordinates of the excavator (S41), a step of displaying the coordinates of the excavator (S42), and selecting the excavator as a surface solidification target. It may include moving to the coordinates of the ground (S43) and solidifying the surface layer according to remote control (S44). The surface layer solidification method is performed by a GPS receiver provided on the excavator 100, the laying attachment 500, and the stirring attachment 20, and a monitor that recognizes and displays the coordinates of the excavator 100 from the GPS receiver. It can be. The step S41 is a process of recognizing the coordinates of the excavator through the GPS receiver provided in the excavator 100, the laying attachment 500, and the stirring attachment 20. Step S42 is a process of displaying the coordinates of the excavator recognized in step S41 on the monitor. Step S43 is a process of moving the excavator 100 to designated coordinates to perform surface solidification on the surface solidification target ground, and in step S44, solidification work is performed on the surface solidification target ground by remotely controlling the excavator, etc. can do. The step of solidifying the surface layer (S44) can be performed using the methods (S1 to S3) described above.

In the above description, each step may be further divided into additional steps or may be combined into fewer steps, depending on the implementation of the present application. Additionally, some steps may be omitted as needed, the order between steps may be changed, and they may be performed simultaneously.

The description of the present application described above is for illustrative purposes, and those skilled in the art will understand that the present application can be easily modified into other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present application is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present application.

1: High-fire fire laying device
100: Excavator
200: High fire storage device
300: High fire transfer unit
310: transfer pipe
320: transfer device
500: Installation attachment
510: connector
520: Buffer hopper
521: discharge port
522: If you do
523: Propulsion device
530: Skeletal structure
531: Top plate
532: Distributed structure
533: Vertical member
5331: Trencher
5332: Discharge guide plate
540: Discharge opening and closing device
550: Installation depth control device
560: Earth-covering plow
570: air filter
600: Integrated surface solidification attachment
700: Overfill prevention device
20: Stirring attachment
30: Rotating link
40: Rapid hydraulic link

Claims (21)

It is a laying attachment that is mounted on the arm of an excavator and lays solid fire material in the soil.
A connector provided to be mounted on the arm of the excavator;
A buffer hopper that stores powder solidification material and has a discharge port directed toward the soil; and
A skeleton structure having a top plate, a distribution structure formed on the lower side of the top plate to distribute the load acting on the connector, and a vertical member connected to the distribution structure and extending downward from the top plate to the lower end of the buffer hopper. Including,
The buffer hopper temporarily stores the powder solidified material supplied from the solidified material storage device, and discharges the solidified material stored therein toward the soil as the laying attachment moves in the working direction,
The skeletal structure has an upper portion formed inside the buffer hopper and shares at least a portion of the internal space of the buffer hopper,
The lower part extending downward from the lower end of the buffer hopper is provided to form a trench in the soil,
The vertical member is formed along the lower part extending lower than the lower end of the buffer hopper, and has a trench tapering toward the front side, and a side of the discharge port so that the solidification material fills the trench formed by the trencher. It includes a discharge guide plate extending downward from both sides and connected to the rear of the trench,
The discharge port is a laying attachment formed at the rear of the trencher. delete According to paragraph 1,
The buffer hopper is,
A laying attachment that extends from one end of the skeletal structure to the other side further than the other end of the skeletal structure. According to paragraph 3,
The buffer hopper is,
A placement attachment that is provided to extend inside the buffer hopper along a direction in which the buffer hopper extends, and further includes a propulsion element that moves the solidified material stored inside the buffer hopper in the direction in which the discharge port is disposed. . According to paragraph 4,
A plurality of the propulsion elements are arranged along the lateral direction,
The lower surface of the buffer hopper has a structure that induces movement of the solid material on the lower surface by the propulsion element. delete delete According to paragraph 1,
The installation attachment is,
It further includes an outlet opening and closing device that opens the outlet when the installation attachment moves while forming a trench in the soil, and closes the outlet when the installation of the solidified fire of the installation attachment is stopped,
an opening/closing rotation axis extending from the rear of the trencher in a lateral direction;
a soil resistance member that extends from the opening and closing rotation axis toward the soil and rotates the opening and closing rotation axis according to the pressure exerted by the soil according to the movement of the installation attachment in the working direction;
an opening and closing door that rotates in conjunction with the opening and closing rotation shaft and opens and closes the discharge port according to rotation of the opening and closing rotation shaft; and
A installation attachment comprising a closing element that drives the opening/closing door to close the outlet when the pressure exerted by the soil is released. According to paragraph 1,
The installation attachment is,
A laying attachment that has a blade extending from the front of the vertical member in a lateral direction and further includes a laying depth adjustment device that adjusts the height of the blade to adjust the protruding length of the trencher that protrudes downward from the lower end of the blade. . According to paragraph 1,
The installation attachment is,
A laying attachment further comprising an earth covering plow having a plow blade disposed between adjacent trenchers along a lateral direction at the rear of the trencher. In the solidifying material laying device for surface solidification,
excavator;
The installation attachment of paragraph 1; and
It includes a solidified material transfer unit having a transfer pipe connected to the installation attachment and a transfer device that transfers the solidified material supplied from the solidification storage device to the installation attachment through the transfer pipe,
The transfer device is a solidified material laying device that transfers the solidified material in the transfer pipe by applying pressure to the solidified material in the transfer pipe. According to clause 11,
The transfer device is,
A chamber formed to receive the solidification material into one side and supply the solidification material to the other side, and to change the internal pressure;
a pair of check valves disposed on one side and the other of the chamber and opened and closed according to pressure changes inside the chamber; and
It includes a diaphragm disposed inside the chamber and driven to pressurize and depressurize the inside of the chamber,
As the pressure inside the chamber decreases, the check valve disposed on one side of the chamber opens and the check valve disposed on the other side of the chamber closes, allowing solidification material to flow into the chamber,
As the pressure inside the chamber increases, the check valve disposed on one side of the chamber is closed and the check valve disposed on the other side of the chamber is opened to supply solidification material from the chamber to the other side of the chamber. High-fire fire laying device. According to clause 12,
The transfer device is,
a plurality of said chambers;
a plurality of pairs of the check valves disposed on one side and the other side of the chamber; and
Includes a plurality of diaphragms disposed inside each chamber,
The plurality of diaphragms are driven to alternately pressurize the plurality of chambers. According to clause 11,
The transfer pipe is,
A plurality of transfer pipe segments with check valves disposed therein;
Includes a connection coupler disposed on both ends of the transfer pipe segment and connected to neighboring transfer pipe segments so that the transfer pipe segment is replaceable,
The transfer pipe segment is provided on the boom side of the excavator, and the check valve prevents the solidified material in the transfer pipe segment from moving from the excavator arm side to the direction opposite to the transfer of the solidified material. . According to clause 11,
The transfer device is,
A solidified material laying device comprising a pressure vessel that suctions and fills the solidified material in powder form by controlling the internal pressure, and pressurizes and transfers the solidified material filled therein. According to clause 11,
The solid fire installation device,
A level sensor that measures the level of solidified fire stored inside the buffer hopper; and
A transfer device control unit that controls the operation of the transfer device according to the level of the solidified material inside the buffer hopper measured by the level sensor;
A solid fire installation device further comprising an overfill prevention device having a. According to clause 11,
A solid fire laying device that is mounted between the installation attachment and the connector of the excavator and further includes a rotary link rotatable about an axis in a normal direction of the connection surface of the connector. As a solid fire laying method performed by the solid fire laying apparatus of paragraph 11,
Receiving powder solidification material from a solidification material storage device and temporarily storing it in the buffer hopper; and
A method of laying solidified fire material, comprising the step of laying the solidified material stored in the buffer hopper into the soil while moving the laying attachment. In the surface solidification method,
Placing solid fire material through the solid fire material laying device of claim 11;
Attaching a stirring attachment to the arm of the excavator to stir the raw soil and solidification material; and
A surface solidification method comprising the step of attaching a compaction attachment to the arm of the excavator to compact the stirred solidified soil. A connector provided to be mounted on the arm of an excavator;
A buffer hopper that temporarily stores the powder solidified material supplied from the solidified material storage device and discharges the solidified material stored therein through a discharge port formed toward the soil side;
A skeleton structure having a top plate, a distribution structure formed on the lower side of the top plate to distribute the load acting on the connector, and a vertical member connected to the distribution structure and extending downward from the top plate to the lower end of the buffer hopper. ; and
It is disposed below the buffer hopper and includes a rotary mixer provided to mix the raw soil and the solidification material by rotation,
The skeletal structure has an upper portion formed inside the buffer hopper and shares at least a portion of the internal space of the buffer hopper,
The lower part extending downward from the lower end of the buffer hopper is provided to form a trench in the soil,
The vertical member is formed along the lower part extending lower than the lower end of the buffer hopper, and has a trench tapering toward the front side, and a side of the discharge port so that the solidification material fills the trench formed by the trencher. It includes a discharge guide plate extending downward from both sides and connected to the rear of the trench,
The discharge port is formed at the rear of the trencher,
The rotary mixer,
a rotation axis extending in a transverse direction perpendicular to the front, which is the direction of the stirring operation;
a rotating cylinder connected to the rotating shaft and rotating in conjunction with the rotating shaft; and
An integrated surface solidification attachment comprising a plurality of stirring blades arranged to protrude from the surface of the rotating cylinder. An integrated surface solidification device comprising an integrated surface solidification attachment according to claim 20,
Excavator with infinite orbit; and
An integrated surface solidification device comprising the integrated surface solidification attachment mounted on the arm of the excavator.

Images