阅读说明：本技术 一种中小型立体仓库 (Small and medium-sized stereoscopic warehouse ) 是由 周锋 周海 赖斌 刘伟萍 欧阳子冬 彭权辉 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种中小型立体仓库,包括立架和货物托板,所述立架内部开设有升降滑槽,且升降滑槽内卡嵌有升降滑柱,并且升降滑柱正面均匀安装有若干个定位销,所述货物托板一侧均匀固定连接有若干个连接块,且连接块正面上下对称开设有定位孔,所述定位销插接在定位孔内。本发明中设置有立架,连接块,升降滑柱和货物托板,组装时可一次性完成多个货物托板的安装固定,无需使用固定螺丝将连接块逐个安装固定在立架上,大大的提高了一种中小型立体仓库的安装效率,且更加省时省力,同时设置有顶板框,能够有效的防止倒灌进入仓库的雨水淹没货物造成经济损失,从而能够良好的保护处于底层货物托板上的货物,提高货物的安全性。(The invention discloses a small and medium-sized stereoscopic warehouse, which comprises a vertical frame and a cargo supporting plate, wherein a lifting chute is formed in the vertical frame, a lifting sliding column is embedded in the lifting chute in a clamping manner, a plurality of positioning pins are uniformly arranged on the front surface of the lifting sliding column, a plurality of connecting blocks are uniformly and fixedly connected to one side of the cargo supporting plate, positioning holes are formed in the front surfaces of the connecting blocks in an up-and-down symmetrical manner, and the positioning pins are inserted in the positioning holes. The vertical frame, the connecting blocks, the lifting sliding columns and the goods supporting plates are arranged, the goods supporting plates can be installed and fixed at one time during assembly, the connecting blocks are not required to be installed and fixed on the vertical frame one by one through fixing screws, the installation efficiency of a small and medium-sized stereoscopic warehouse is greatly improved, time and labor are saved, meanwhile, the top plate frame is arranged, the economic loss caused by the fact that rainwater flowing back into the warehouse submerges the goods can be effectively prevented, the goods on the bottom goods supporting plates can be well protected, and the safety of the goods is improved.)

1. A small and medium-sized stereoscopic warehouse comprises a vertical frame (2) and a cargo supporting plate (4), and is characterized in that a lifting chute (10) is formed inside the vertical frame (2), a lifting sliding column (8) is embedded in the lifting chute (10) in a clamping manner, a plurality of positioning pins (28) are uniformly installed on the front surface of the lifting sliding column (8), a plurality of connecting blocks (5) are uniformly and fixedly connected to one side of the cargo supporting plate (4), positioning holes (27) are symmetrically formed in the front surface of each connecting block (5) in an up-and-down manner, the positioning pins (28) are inserted into the positioning holes (27), a mounting cavity (14) is formed inside the lifting sliding column (8), guide chutes (25) are symmetrically formed in the inner walls of two sides of the mounting cavity (14), guide sliding blocks (19) are embedded in the guide chutes (25), and a movable plate (18) is fixedly installed between the two guide sliding blocks (19), and nut piece (17) are installed to the symmetry on movable plate (18) to movable plate (18) side evenly installs a plurality of fixed pin (20), the symmetry is provided with second servo motor (15) about on the side of lift traveller (8) one side, and second servo motor (15) output is connected with two-way lead screw (16) that are located installation cavity (14), and two-way lead screw (16) and nut piece (17) intermeshing, a plurality of through-hole (21) have evenly been seted up to lift traveller (8) both sides side symmetry, three fixed orificess (26) of group have evenly been seted up to connecting block (5) both sides side symmetry, fixed pin (20) run through-hole (21) are pegged graft in fixed orifices (26).

2. The small and medium sized stereoscopic warehouse according to claim 1, wherein a top plate frame (7) is fixedly connected to the top end of the lifting sliding column (8), mounting bearings (22) are uniformly mounted at four corners of the top plate frame (7), a threaded rod shaft (13) is mounted in the mounting bearings (22), the top end of the threaded rod shaft (13) is connected with the output end of the first servo motor (12), mounting plates (23) are symmetrically mounted on the side surfaces of the vertical frames (2) at two ends, a fixing nut (24) is mounted in the center of each mounting plate (23), and the fixing nut (24) and the threaded rod shaft (13) are meshed with each other.

3. The small and medium sized stereoscopic warehouse as claimed in claim 2, wherein the electric slide rails (9) are symmetrically installed on both sides of the top surface of the top plate frame (7), the movable frame (11) is installed on the electric slide rails (9), and the camera (29) and the smoke alarm (30) are sequentially installed on the bottom surface of the movable frame (11).

4. A small and medium sized stereoscopic warehouse as claimed in claim 1, wherein a diagonal draw frame (3) is connected between the adjacent vertical frames (2).

5. The small and medium sized stereoscopic warehouse of claim 1, wherein the bottom end of the vertical frame (2) is fixedly connected with a fixed bottom plate (1), and a plurality of fixing bolts (6) are uniformly installed on the fixed bottom plate (1).

6. The small and medium sized stereoscopic warehouse of claim 3, wherein the first servo motor (12), the second servo motor (15), the electric slide rail (9), the camera (29) and the smoke alarm (30) are electrically connected with an external control room.

7. A small and medium sized stereoscopic warehouse as claimed in claim 1, wherein the cross-sectional shape of the connecting block (5) is a letter-concave shape.

8. A small and medium sized stereoscopic warehouse as claimed in claim 1, wherein the cross-sectional shape of the lifting slide column (8) is a convex shape.

9. The small and medium sized stereoscopic warehouse of claim 2, wherein the cross-sectional shape of the ceiling frame (7) is a square.

10. A small and medium sized stereoscopic warehouse as claimed in claim 1, wherein the cargo pallets (4) are equally spaced.

Technical Field

The invention relates to the technical field of stereoscopic warehouses, in particular to a small and medium-sized stereoscopic warehouse.

Background

Stereoscopic warehouse is a warehouse which adopts a high-rise goods shelf to store goods by containers or trays and uses a tunnel type stacking crane and other machines to operate, the stereoscopic warehouse is an important logistics node in a modern logistics system, the stereoscopic warehouse is more and more common in logistics centers, the stereoscopic warehouse has the functions of saving the storage occupied area and improving the space utilization rate, and a small and medium-sized logistics center mostly adopts a small and medium-sized stereoscopic warehouse.

Traditional middle-size and small-size stereoscopic warehouse's goods layer board is mostly through connecting block and fixed screw fixed mounting on the stand, the installation is very wasted time and energy, and be not convenient for adjust, not only increased workman's the amount of labour, and the packaging efficiency has been reduced, current middle-size and small-size stereoscopic warehouse is when meetting the torrential rain and pouring backward into the warehouse in addition, because artifical transfer goods needs certain time, this just leads to the goods that is in on the bottom goods layer board to be submerged and wet by the water easily, cause great economic loss, and, a current middle-size and small-size stereoscopic warehouse does not possess mostly and monitors alarming function, be difficult to in time discover and confirm the position when the goods miniatures is on fire and report to the police and warn, thereby be difficult to reduce conflagration calamity to minimums limit, the security is lower.

Disclosure of Invention

The invention aims to solve the defects in the prior art, provide a medium and small-sized stereoscopic warehouse which has the functions of being convenient to assemble and adjust quickly, improve the installation efficiency, and can lift bottom goods in time when the goods flow backwards into the warehouse in the case of rainstorm, prevent the goods from being flooded, reduce the loss, monitor and alarm the fire of the goods and have high safety.

In order to achieve the purpose, the invention adopts the following technical scheme: a middle and small-sized stereoscopic warehouse comprises a vertical frame and a cargo supporting plate, wherein a lifting chute is formed in the vertical frame, a lifting slide column is embedded in the lifting chute in a clamping manner, a plurality of positioning pins are uniformly arranged on the front surface of the lifting slide column, a plurality of connecting blocks are uniformly and fixedly connected to one side of the cargo supporting plate, positioning holes are symmetrically formed in the front surface of the connecting blocks in an up-and-down manner, the positioning pins are inserted into the positioning holes, an installation cavity is formed in the lifting slide column, guide chutes are symmetrically formed in the inner walls of two sides of the installation cavity, guide sliding blocks are embedded in the guide chutes in a clamping manner, a movable plate is fixedly arranged between the two groups of guide sliding blocks, nut blocks are symmetrically arranged on the movable plate, a plurality of fixing pins are uniformly arranged on the side surface of the movable plate, second servo motors are symmetrically arranged on the upper and lower sides of one side surface of the lifting slide column, and the output ends of the second servo motors are connected with two-way lead screws positioned in the installation cavity, and the bidirectional screw rod is meshed with the nut block, a plurality of through holes are symmetrically and uniformly formed in the side surfaces of two sides of the lifting sliding column, three groups of fixing holes are symmetrically and uniformly formed in the side surfaces of two sides of the connecting block, and the fixing pins penetrate through the through holes and are inserted into the fixing holes.

As a further description of the above technical solution:

the top end of the lifting sliding column is fixedly connected with a top plate frame, mounting bearings are uniformly mounted at four corners of the top plate frame, a threaded rod shaft is mounted in each mounting bearing, the top end of each threaded rod shaft is connected with the output end of a first servo motor, mounting plates are symmetrically mounted on the side faces of the vertical frames at two ends of each mounting plate, a fixing nut is mounted in the center of each mounting plate, and the fixing nuts are meshed with the threaded rod shafts.

As a further description of the above technical solution:

electronic slide rail is installed to roof frame top surface bilateral symmetry, and installs on the electronic slide rail and remove the frame, remove the frame bottom surface and install camera and smoke alarm in proper order.

As a further description of the above technical solution:

and an inclined pull frame is connected between the adjacent vertical frames.

As a further description of the above technical solution:

the stand bottom fixedly connected with PMKD, and the last a plurality of fixing bolt that evenly installs of PMKD.

As a further description of the above technical solution:

first servo motor, second servo motor, electronic slide rail, camera and smoke alarm all with external control room electric connection.

As a further description of the above technical solution:

the cross section of the connecting block is concave.

As a further description of the above technical solution:

the cross section of the lifting slide column is in a convex shape.

As a further description of the above technical solution:

the cross section of the top plate frame is in a shape of Chinese character hui.

As a further description of the above technical solution:

and the distances between the adjacent cargo supporting plates are equal.

Compared with the prior art, the invention has the beneficial effects that;

1. the invention is provided with a vertical frame, a connecting block, a lifting sliding column and a goods supporting plate, when in assembly, a worker firstly fixes and installs the vertical frame on the ground through a fixed bottom plate connected with the bottom end of the vertical frame and a fixed bolt arranged on the fixed bottom plate, adjacent vertical frames are connected with each other through a diagonal tension frame, the stability of the vertical frame is improved, at the moment, the lifting sliding column is embedded in a lifting sliding groove arranged in the vertical frame in a clamping way, then the worker lifts the goods supporting plate with one side fixedly connected with a plurality of connecting blocks, then a positioning pin fixedly arranged on the side surface of the lifting sliding column is inserted in a positioning hole arranged on the connecting block, the positioning and the primary support of the connecting block and the goods supporting plate are realized, the steps are repeated, a plurality of goods supporting plates are inserted and installed on the lifting sliding column at equal intervals through the connecting blocks, then a second servo motor is started to drive a bidirectional screw rod to rotate, because the bidirectional screw rod is meshed with nut blocks symmetrically installed on two moving plates in an installation cavity, and the guide sliding blocks installed on the two sides of the movable plate are clamped in the guide sliding grooves formed in the side wall of the installation cavity, so that when the bidirectional screw rod rotates, the two movable plates move towards the two sides along the direction of the guide sliding grooves, and then the fixed pins installed on the side surfaces of the movable plates penetrate through holes formed in the side surfaces of the lifting sliding columns and are inserted into the fixed holes formed in the side surfaces of the connecting blocks, so that the installation and fixation of a plurality of cargo supporting plates can be completed at one time, the connecting blocks are not required to be installed and fixed one by using fixed screws, the installation efficiency of a small and medium-sized stereoscopic warehouse is greatly improved, and time and labor are saved.

2. The invention is provided with the top plate frame, when a small and medium-sized stereoscopic warehouse enters the warehouse in a rainstorm backflow manner, workers synchronously start four first servo motors arranged at four corners of the top plate frame to drive the threaded rod shafts arranged in the mounting bearings to rotate, the threaded rod shafts are meshed with the fixing nuts arranged on the mounting plates on the side faces of the vertical frames, so that when the threaded rod shafts rotate, the top plate frame can be driven to move upwards, the bottom surface of the top plate frame is fixedly connected with the top ends of the lifting slide columns, the lifting slide columns can be lifted upwards synchronously along with the top plate frame, the cargo supporting plates are fixedly arranged on the lifting slide columns through the connecting blocks, and cargos placed on the cargo supporting plates can be lifted upwards along with the lifting slide columns, so that the economic loss caused by the fact that rainwater flowing backwards into the warehouse floods the cargos can be effectively prevented, and the cargos on the cargo supporting plates on the bottom layer can be well protected.

3. According to the invention, the movable frame is arranged, the electric slide rails are symmetrically arranged on two sides of the top surface of the top plate frame, the movable frame is arranged on the electric slide rails, the camera and the smoke alarm are sequentially arranged on the bottom surface of the movable frame, a worker can control the movable frame to move back and forth along the electric slide rails in a control room, the condition of goods placed on the goods supporting plate is observed by using the camera arranged on the bottom surface of the movable frame, when the goods are in fire, the smoke alarm arranged on the movable frame patrolling to the position above the fire-on position can sense smoke generated by burning of the goods, so that alarm reminding is realized, the worker can quickly determine the fire-on position by reporting alarm sound generated by the smoke alarm and monitoring pictures of the camera, and can timely perform treatment to prevent the fire from further spreading, thereby reducing the fire disaster to the minimum limit and improving the safety of the goods.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a small and medium-sized stereoscopic warehouse according to the present invention;

fig. 2 is a top cross-sectional view of a small and medium-sized stereoscopic warehouse according to the present invention;

fig. 3 is a cross sectional view of a lifting slide column of a small and medium-sized stereoscopic warehouse according to the present invention;

FIG. 4 is an enlarged view of FIG. 1 taken at A in accordance with the present invention;

FIG. 5 is an enlarged view of FIG. 2 at B according to the present invention;

fig. 6 is a perspective view of a connecting block and a cargo pallet of a small and medium-sized stereoscopic warehouse according to the present invention;

fig. 7 is a perspective view of a lifting slide column of a small and medium-sized stereoscopic warehouse according to the present invention;

fig. 8 is a perspective view of a top frame plate and a movable frame of a small and medium-sized stereoscopic warehouse according to the present invention.

Illustration of the drawings:

1. fixing the bottom plate; 2. erecting a frame; 3. obliquely pulling the frame; 4. a cargo pallet; 5. connecting blocks; 6. fixing the bolt; 7. a ceiling frame; 8. a lifting slide column; 9. an electric slide rail; 10. a lifting chute; 11. a movable frame; 12. a first servo motor; 13. a threaded rod shaft; 14. a mounting cavity; 15. a second servo motor; 16. a bidirectional lead screw; 17. a nut block; 18. moving the plate; 19. a guide slider; 20. a fixing pin; 21. a through hole; 22. mounting a bearing; 23. mounting a plate; 24. fixing a nut; 25. a guide chute; 26. a fixing hole; 27. positioning holes; 28. positioning pins; 29. a camera; 30. a smoke alarm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases by those of ordinary skill in the art:

in the first embodiment, a small and medium-sized stereoscopic warehouse comprises a vertical frame 2 and a cargo supporting plate 4, wherein a lifting chute 10 is arranged in the vertical frame 2, a lifting slide column 8 is embedded in the lifting chute 10 in a clamping manner, a plurality of positioning pins 28 are uniformly arranged on the front surface of the lifting slide column 8, a plurality of connecting blocks 5 are uniformly and fixedly connected to one side of the cargo supporting plate 4, positioning holes 27 are symmetrically formed in the front surface of each connecting block 5 in an up-and-down manner, the positioning pins 28 are inserted into the positioning holes 27, an installation cavity 14 is arranged in the lifting slide column 8, guide slide grooves 25 are symmetrically formed in the inner walls of two sides of the installation cavity 14, guide slide blocks 19 are embedded in the guide slide grooves 25 in a clamping manner, a movable plate 18 is fixedly arranged between the two groups of guide slide blocks 19, nut blocks 17 are symmetrically arranged on the movable plate 18, a plurality of fixing pins 20 are uniformly arranged on the side surface of the movable plate 18, second servo motors 15 are symmetrically arranged on the side surface of one side surface of the lifting slide column 8 in an up-and-down manner, and the 15 output of second servo motor is connected with two-way lead screw 16 that is located the installation cavity 14, and two-way lead screw 16 and nut piece 17 intermeshing, a plurality of through-hole 21 has evenly been seted up to 8 bilateral side symmetries of lift traveller, three fixed orificess 26 of group have evenly been seted up to 5 bilateral side symmetries of connecting block, fixed pin 20 runs through-hole 21 and pegs graft in fixed orificess 26, it is fixed to have played the installation that can once only accomplish a plurality of goods layer boards 4, need not to use fixed screw to install connecting block 5 one by one fixed, great improvement a small-and-medium-sized stereoscopic warehouse's installation effectiveness, and the effect of labour saving and time saving more.

The embodiment two, 8 top fixedly connected with roof frames 7 of lift traveller, installation bearing 22 is evenly installed at roof frame 7 four corners, and install threaded rod axle 13 in the installation bearing 22, and the 12 output ends of first servo motor are connected on threaded rod axle 13 top, 2 side symmetry installations of both ends grudging post have mounting panel 23, and mounting panel 23 central authorities install fixation nut 24, and fixation nut 24 and threaded rod axle 13 intermeshing, it can effectually prevent that the rainwater that flows backward gets into the warehouse from flooding the goods and causing economic loss to play, the goods that can be good protection on bottom goods layer board 4.

Third, electronic slide rail 9 is installed to roof plate frame 7 top surface bilateral symmetry, and installs on electronic slide rail 9 and remove frame 11, removes 11 bottom surfaces of frame and installs camera 29 and smoke alarm 30 in proper order, electronic slide rail 9, camera 29 and smoke alarm 30 are current mature technique, no longer gives unnecessary details here, has played the warning sound that accessible newspaper smoke alarm 30 takes place and camera 29 control picture position of starting a fire of confirming fast to in time make the processing, prevent that the conflagration from further stretching, thereby reduce the conflagration calamity to minimums, improve the security of goods.

In the fourth embodiment, the inclined pull frame 3 is connected between the adjacent vertical frames 2, so that the stability of the vertical frames 2 is improved.

Fifth, 2 bottom fixedly connected with PMKD 1 of grudging post, and evenly install a plurality of fixing bolt 6 on PMKD 1, played the effect of fixing grudging post 2 firmly on ground.

Sixth embodiment, first servo motor 12, second servo motor 15, electronic slide rail 9, camera 29 and smoke alarm 30 all with external control room electric connection, have played the effect of the workman's control of being convenient for.

In the seventh embodiment, the cross section of the connecting block 5 is concave.

In the eighth embodiment, the cross-sectional shape of the lifting slide 8 is a convex shape.

In the ninth embodiment, the top plate frame 7 has a rectangular cross-sectional shape.

In the tenth embodiment, the adjacent cargo pallets 4 are equally spaced.

The working principle is as follows: the invention is provided with a vertical frame 2, a connecting block 5, a lifting sliding column 8 and a goods supporting plate 4, when in assembly, a worker firstly fixes and installs the vertical frame 2 on the ground through a fixed bottom plate 1 connected with the bottom end of the vertical frame 2 and a fixed bolt 6 arranged on the fixed bottom plate 1, the adjacent vertical frames 2 are connected with each other through a diagonal frame 3, the stability of the vertical frame 2 is improved, at the moment, the lifting sliding column 8 is embedded in a lifting sliding chute 10 arranged in the vertical frame 2 in a clamping way, then the worker lifts the goods supporting plate 4 with one side fixedly connected with a plurality of connecting blocks 5, then a positioning pin 28 fixedly arranged on the side surface of the lifting sliding column 8 is inserted in a positioning hole 27 arranged on the connecting block 5, the positioning and the preliminary supporting of the connecting blocks 5 and the goods supporting plate 4 are realized, the steps are repeated, the goods supporting plates 4 are inserted and installed on the lifting sliding column 8 through the connecting blocks 5 at equal intervals, then a second servo motor 15 is started to drive a bidirectional screw 16 to rotate, because the bidirectional screw 16 is meshed with the nut blocks 17 symmetrically arranged on the two movable plates 18 in the mounting cavity 14, and the guide sliding blocks 19 arranged on two sides of the movable plates 18 are clamped and embedded in the guide sliding grooves 25 arranged on the side wall of the mounting cavity 14, when the bidirectional screw 16 rotates, the two movable plates 18 move towards two sides along the direction of the guide sliding grooves 25, the fixed pins 20 arranged on the side surfaces of the movable plates 18 penetrate through the through holes 21 arranged on the side surfaces of the lifting sliding columns 8 and are inserted into the fixed holes 26 arranged on the side surfaces of the connecting blocks 5, so that the mounting and fixing of the plurality of cargo supporting plates 4 can be completed at one time, the connecting blocks 5 are mounted and fixed one by one without using fixed screws, the mounting efficiency of a small and medium-sized stereoscopic warehouse is greatly improved, the time and labor are saved, the top plate frame 7 is arranged in the invention, and when the small and medium-sized stereoscopic warehouse runs into the warehouse in heavy rain, workers synchronously start four first servo motors 12 arranged at four corners of the top plate frame 7 to drive the mounting shafts to be mounted on the mounting shafts The screw rod shaft 13 in the bearing 22 rotates, the screw rod shaft 13 is meshed with a fixing nut 24 arranged on a mounting plate 23 on the side surface of the vertical frame 2, so that when the screw rod shaft 13 rotates, the top plate frame 7 can be driven to move upwards, the bottom surface of the top plate frame 7 is fixedly connected with the top end of the lifting slide column 8, the lifting slide column 8 can be synchronously lifted upwards along with the top plate frame 7, the cargo supporting plate 4 is fixedly arranged on the lifting slide column 8 through the connecting block 5, so that the cargo placed on the cargo supporting plate 4 can be lifted upwards along with the cargo supporting plate 4, the cargo on the bottom cargo supporting plate 4 can be effectively prevented from being submerged by rainwater poured into a warehouse to cause economic loss, the cargo can be well protected, in addition, the invention is provided with the moving frame 11, the electric slide rails 9 are symmetrically arranged on two sides of the top surface of the top plate frame 7, the moving frame 11 is arranged on the electric slide rails 9, the bottom surface of the moving frame 11 is sequentially provided with the camera 29 and the smoke alarm 30, the workman can remove frame 11 along electronic slide rail 9 round trip movement in control room control, utilize the camera 29 of installing in the removal frame 11 bottom surface to observe the goods situation of placing on goods layer board 4, when the goods conflagration breaks out, patrol to the smog alarm 30 of installing on the removal frame 11 of position top of catching a fire and can perceive the smog that the goods burning produced, and then report to the police and remind, the workman can be through reporting to the police that the alarm sound that smog alarm 30 took place and camera 29 monitor picture confirm the position of catching a fire fast, and in time make the processing, prevent that the conflagration from further stretching, thereby reduce the conflagration calamity to minimumly, improve the security of goods.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.