阅读说明：本技术 一种道路桥梁用道路铺设装置 (Road paving device for road and bridge ) 是由 丁道勇 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种道路桥梁用道路铺设装置,属于道路铺设技术领域,一种道路桥梁用道路铺设装置,包括底板和第一箱体,所述第一箱体固定连接在底板上,所述第一箱体上设有电机,所述电机输出端连接有第一转动轴,所述第一箱体内壁转动连接有第四转动轴,所述第四转动轴上设有螺旋叶片,所述第一箱体底部设有出料管,所述第一箱体侧壁转动连接有第三转动轴,所述第三转动轴上设有曲轴,所述底板上设有活塞,所述活塞与曲轴之间转动连接,所述底板上固定连接有第二箱体；本发明结构简单,工作可靠,通过毛刷和空心筒的相互配合,在铺设前可对路面进行清扫,通过凸轮和压紧板的相互配合,在铺设后可同步进行压紧作业,铺设效率大大提升。(The invention discloses a road paving device for roads and bridges, which belongs to the technical field of road paving and comprises a bottom plate and a first box body, wherein the first box body is fixedly connected to the bottom plate, a motor is arranged on the first box body, the output end of the motor is connected with a first rotating shaft, the inner wall of the first box body is rotatably connected with a fourth rotating shaft, a helical blade is arranged on the fourth rotating shaft, a discharging pipe is arranged at the bottom of the first box body, a third rotating shaft is rotatably connected to the side wall of the first box body, a crankshaft is arranged on the third rotating shaft, a piston is arranged on the bottom plate, the piston is rotatably connected with the crankshaft, and a second box body is fixedly connected to the bottom plate; the road surface cleaning machine has a simple structure and reliable work, the road surface can be cleaned before laying through the mutual matching of the brush and the hollow cylinder, the compaction operation can be synchronously carried out after laying through the mutual matching of the cam and the compaction plate, and the laying efficiency is greatly improved.)

1. The road paving device for the road and bridge comprises a bottom plate (1) and a first box body (2), wherein the first box body (2) is fixedly connected onto the bottom plate (1), the road paving device is characterized in that a motor (202) is arranged on the first box body (2), the output end of the motor (202) is connected with a first rotating shaft (203), the inner wall of the first box body (2) is rotatably connected with a fourth rotating shaft (6), a spiral blade (601) is arranged on the fourth rotating shaft (6), a discharging pipe (602) is arranged at the bottom of the first box body (2), the side wall of the first box body (2) is rotatably connected with a third rotating shaft (4), a crankshaft (402) is arranged on the third rotating shaft (4), a piston (403) is arranged on the bottom plate (1), the piston (403) is rotatably connected with the crankshaft (402), and a second box body (5) is fixedly connected onto the bottom plate (1), be connected with first hollow tube (404) between second box (5) and piston (403), bottom plate (1) bottom is equipped with hollow section of thick bamboo (502), be connected with conveying pipeline (503) between hollow section of thick bamboo (502) and second box (5), it is connected with fifth axis of rotation (7) to rotate on bottom plate (1), fifth axis of rotation (7) bottom is connected with first rotation disk (703), first rotation disk (703) bottom is equipped with brush (704), bottom plate (1) bottom is equipped with pressure strip (10).

2. The road paving device for road and bridge according to claim 1, wherein a second rotating shaft (206) is rotatably connected to the first box body (2), a second gear (205) and a stirring rod (3) are fixedly connected to the second rotating shaft (206) respectively, a first gear (204) is fixedly connected to the first rotating shaft (203), and the first gear (204) is meshed with the second gear (205).

3. The road paving device for road and bridge according to claim 2, wherein the second rotating shaft (206) is fixedly connected with a scraper (301), the inner wall of the first box body (2) is provided with a baffle (302), and the scraper (301) is attached to the baffle (302).

4. Road-paving device for road and bridge according to claim 1, characterized in that a first belt (401) is connected between said third rotation axis (4) and said first rotation axis (203), and a second belt (603) is connected between said third rotation axis (4) and said fourth rotation axis (6).

5. Road-paving machine for road and bridge according to claim 4, characterized in that a third gear (701) is connected to said fourth rotating shaft (6), a fourth gear (702) is connected to said fifth rotating shaft (7), said third gear (701) and fourth gear (702) are engaged, and a third belt (901) is connected between said fourth rotating shaft (6) and sixth rotating shaft (9).

6. The road paving device for road and bridge according to claim 5, characterized in that the bottom of the bottom plate (1) is provided with a clamping plate (8), a roller (802) is arranged in the clamping plate (8), the fifth rotating shaft (7) is provided with a second rotating disc (801), and the second rotating disc (801) is attached to the roller (802).

7. The road paving device for the road and bridge as claimed in claim 5, wherein a cam (902) is arranged on the sixth rotating shaft (9), a sliding rod (904) is connected onto the bottom plate (1) in a sliding manner, a pushing plate (903) is fixedly connected onto the sliding rod (904), the pushing plate (903) abuts against the cam (902), a connecting plate (906) is arranged at the bottom of the sliding rod (904), and a contraction rod (1001) and a second spring (1002) are connected between the pressing plate (10) and the connecting plate (906).

8. Road-paving device for road and bridge according to claim 7, characterized in that a first spring (907) is connected between said connecting plate (906) and said base plate (1), a guide bar (905) is fixedly connected to said base plate (1), said guide bar (905) being slidably connected to said pushing plate (903).

9. Road-paving unit for road and bridge according to claim 1, characterized in that said first hollow pipe (404) is provided with a non-return valve (405), said second box (5) is provided with a filtering plate (501), said first box (2) is provided with a feed inlet (201) on its side wall.

10. The road-paving machine for road and bridge according to claim 1, characterized in that the side walls of said second box (5) are provided with side doors (504) and the bottom of said bottom plate (1) is provided with wheels (101).

Technical Field

The invention relates to the technical field of road paving, in particular to a road paving device for roads and bridges.

Background

In recent years, due to the rapid development of economy, the mileage of road construction is higher and higher, because the topography of china is comparatively complicated, the in-process of road construction often needs to be built a bridge, and the bridge construction finishes the back, needs to carry out asphalt paving to the bridge road surface, and current bridge road surface laying device is bulky, when carrying out local repair to road bridge, needs numerous workman to cooperate and lays, and the function singleness, has seriously reduced and has laid efficiency.

Disclosure of Invention

The invention aims to solve the problems that a plurality of workers are needed to carry out matched paving and the functions are single in the prior art, and provides a road paving device for roads and bridges.

In order to achieve the purpose, the invention adopts the following technical scheme:

a road paving device for roads and bridges comprises a bottom plate and a first box body, wherein the first box body is fixedly connected to the bottom plate, a motor is arranged on the first box body, the output end of the motor is connected with a first rotating shaft, the inner wall of the first box body is rotatably connected with a fourth rotating shaft, a helical blade is arranged on the fourth rotating shaft, a discharging pipe is arranged at the bottom of the first box body, the side wall of the first box body is rotatably connected with a third rotating shaft, a crankshaft is arranged on the third rotating shaft, a piston is arranged on the bottom plate and is rotatably connected with the crankshaft, a second box body is fixedly connected to the bottom plate, a first hollow pipe is connected between the second box body and the piston, a hollow cylinder is arranged at the bottom of the bottom plate, a material conveying pipe is connected between the hollow cylinder and the second box body, a fifth rotating shaft is rotatably connected to the bottom plate, and a first rotating disc is connected to the bottom of the fifth rotating shaft, the bottom of the first rotating disc is provided with a hairbrush, and the bottom of the bottom plate is provided with a pressing plate.

Preferably, a second rotating shaft is rotatably connected in the first box body, a second gear and a stirring rod are fixedly connected to the second rotating shaft respectively, a first gear is fixedly connected to the first rotating shaft, and the first gear is meshed with the second gear.

Preferably, the second rotating shaft is fixedly connected with a scraper, the inner wall of the first box body is provided with a baffle, and the scraper is attached to the baffle.

Preferably, a first belt is connected between the third rotating shaft and the first rotating shaft, and a second belt is connected between the third rotating shaft and the fourth rotating shaft.

Preferably, a third gear is connected to the fourth rotating shaft, a fourth gear is connected to the fifth rotating shaft, the third gear and the fourth gear are connected in a meshed mode, and a third belt is connected between the fourth rotating shaft and the sixth rotating shaft.

Preferably, the bottom of the bottom plate is provided with a clamping plate, a rolling shaft is arranged in the clamping plate, a second rotating disc is arranged on the fifth rotating shaft, and the second rotating disc is attached to the rolling shaft.

Preferably, the sixth rotating shaft is provided with a cam, the bottom plate is connected with a sliding rod in a sliding mode, the sliding rod is fixedly connected with a pushing plate, the pushing plate abuts against the cam, the bottom of the sliding rod is provided with a connecting plate, and a contraction rod and a second spring are connected between the pressing plate and the connecting plate.

Preferably, a first spring is connected between the connecting plate and the bottom plate, a guide rod is fixedly connected to the bottom plate, and the guide rod is connected with the pushing plate in a sliding manner

Preferably, a one-way valve is arranged in the first hollow pipe, a filter plate is arranged in the second box body, and a feeding hole is formed in the side wall of the first box body.

Preferably, the side wall of the second box body is provided with a side door, and the bottom of the bottom plate is provided with wheels.

Compared with the prior art, the invention provides a road paving device for roads and bridges, which has the following beneficial effects:

1. this road paving device for road and bridge, during the use, pour pitch into in the first box through the feed inlet, starter motor, the motor drives first axis of rotation and rotates, first axis of rotation drives the second axis of rotation through first gear and second gear and rotates, the second axis of rotation drives the puddler and stirs pitch, send pitch into first bottom half through the scraper blade simultaneously, meanwhile, first axis of rotation drives the rotation of third axis of rotation through first belt, the third axis of rotation drives the rotation of fourth axis of rotation through the second belt, the fourth axis of rotation passes through helical blade and discharges pitch from the discharging pipe, lay the operation.

2. This road paving device for road and bridge, fourth axis of rotation are when rotating, and the fourth axis of rotation passes through third gear and fourth gear drive fifth axis of rotation and rotates, and the fifth axis of rotation drives the brush and rotates, cleans ground, and the third axis of rotation drives the piston motion through the bent axle simultaneously, and the piston produces the negative pressure through first hollow tube in the second box, and the second box is through empty core tube with debris such as leaf in inhaling the second box.

3. This road paving device for road and bridge, fourth axis of rotation are when rotating, and the fourth axis of rotation drives the cam through the third belt and rotates, and the cam drives slurcam reciprocating motion, and the slurcam passes through the slide bar and the connecting plate drives pressure strip reciprocating motion, compresses tightly the asphalt pavement who lays through the pressure strip.

The device has the advantages that the structure is simple, the work is reliable, the brush and the hollow cylinder are matched with each other, the road surface can be cleaned before the pavement is paved, the cam and the pressing plate are matched with each other, the pressing operation can be synchronously carried out after the pavement is paved, and the paving efficiency is greatly improved.

Drawings

Fig. 1 is a schematic structural view of a road paving device for roads and bridges according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 of the road paving apparatus for road and bridge according to the present invention;

FIG. 3 is an enlarged view of a portion B of FIG. 1 of the road paving apparatus for road and bridge according to the present invention;

FIG. 4 is an enlarged view of a portion C of FIG. 1 of the road paving apparatus for road and bridge according to the present invention;

fig. 5 is a front view of a second box of the road paving device for roads and bridges according to the present invention.

In the figure: 1. a base plate; 101. a wheel; 2. a first case; 201. a feed inlet; 202. a motor; 203. a first rotating shaft; 204. a first gear; 205. a second gear; 206. a second rotating shaft; 3. a stirring rod; 301. a squeegee; 302. a baffle plate; 4. a third rotating shaft; 401. a first belt; 402. a crankshaft; 403. a piston; 404. a first hollow tube; 405. a one-way valve; 5. a second case; 501. a filter plate; 502. a hollow cylinder; 503. a delivery pipe; 504. a side door; 6. a fourth rotating shaft; 601. a helical blade; 602. a discharge pipe; 603. a second belt; 7. a fifth rotating shaft; 701. a third gear; 702. a fourth gear; 703. a first rotating disk; 704. a brush; 8. a clamping plate; 801. a second rotating disk; 802. a roller; 9. a sixth rotating shaft; 901. a third belt; 902. a cam; 903. a push plate; 904. a slide bar; 905. a guide bar; 906. a connecting plate; 907. a first spring; 10. a compression plate; 1001. a retracting lever; 1002. a second spring.

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 is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.

Example 1:

referring to fig. 1-5, a road paving device for road and bridge comprises a bottom plate 1 and a first box 2, the first box 2 is fixedly connected to the bottom plate 1, the first box 2 is provided with a motor 202, the output end of the motor 202 is connected with a first rotating shaft 203, the inner wall of the first box 2 is rotatably connected with a fourth rotating shaft 6, the fourth rotating shaft 6 is provided with a helical blade 601, the bottom of the first box 2 is provided with a discharging pipe 602, the side wall of the first box 2 is rotatably connected with a third rotating shaft 4, the third rotating shaft 4 is provided with a crankshaft 402, the bottom plate 1 is provided with a piston 403, the piston 403 is rotatably connected with the crankshaft 402, the bottom plate 1 is fixedly connected with a second box 5, a first hollow pipe 404 is connected between the second box 5 and the piston 403, the bottom of the bottom plate 1 is provided with a hollow cylinder 502, a material conveying pipe 503 is connected between the hollow cylinder 502 and the second box 5, the bottom plate 1 is rotatably connected with a fifth rotating shaft 7, the bottom of the fifth rotating shaft 7 is connected with a first rotating disc 703, the bottom of the first rotating disc 703 is provided with a brush 704, and the bottom of the bottom plate 1 is provided with a pressing plate 10.

A second rotating shaft 206 is rotatably connected in the first box 2, a second gear 205 and the stirring rod 3 are fixedly connected to the second rotating shaft 206 respectively, a first gear 204 is fixedly connected to the first rotating shaft 203, and the first gear 204 is meshed with the second gear 205.

The second rotating shaft 206 is fixedly connected with a scraper 301, the inner wall of the first box body 2 is provided with a baffle 302, and the scraper 301 is attached to the baffle 302.

A first belt 401 is connected between the third rotating shaft 4 and the first rotating shaft 203, and a second belt 603 is connected between the third rotating shaft 4 and the fourth rotating shaft 6.

A third gear 701 is connected to the fourth rotating shaft 6, a fourth gear 702 is connected to the fifth rotating shaft 7, the third gear 701 and the fourth gear 702 are connected in a meshing manner, and a third belt 901 is connected between the fourth rotating shaft 6 and the sixth rotating shaft 9.

The bottom of the bottom plate 1 is provided with a clamping plate 8, a rolling shaft 802 is arranged in the clamping plate 8, a fifth rotating shaft 7 is provided with a second rotating disc 801, and the second rotating disc 801 is attached to the rolling shaft 802.

The sixth rotating shaft 9 is provided with a cam 902, the bottom plate 1 is connected with a sliding rod 904 in a sliding mode, the sliding rod 904 is fixedly connected with a pushing plate 903, the pushing plate 903 abuts against the cam 902, the bottom of the sliding rod 904 is provided with a connecting plate 906, and a contraction rod 1001 and a second spring 1002 are connected between the pressing plate 10 and the connecting plate 906.

A first spring 907 is connected between the connecting plate 906 and the bottom plate 1, a guide rod 905 is fixedly connected to the bottom plate 1, and the guide rod 905 is slidably connected with the pushing plate 903

A one-way valve 405 is arranged in the first hollow pipe 404, a filter plate 501 is arranged in the second box body 5, and a feeding hole 201 is formed in the side wall of the first box body 2.

The side wall of the second box body 5 is provided with a side door 504, and the bottom of the bottom plate 1 is provided with wheels 101.

During the use, pour into first box 2 with pitch through feed inlet 201 in, starter motor 202, motor 202 drives first axis of rotation 203 and rotates, first axis of rotation 203 drives second axis of rotation 206 through first gear 204 and second gear 205 and rotates, second axis of rotation 206 drives puddler 3 and stirs pitch, simultaneously send pitch into first box 2 bottom through scraper blade 301, meanwhile, first axis of rotation 203 drives third axis of rotation 4 through first belt 401 and rotates, third axis of rotation 4 drives fourth axis of rotation 6 through second belt 603 and rotates, fourth axis of rotation 6 discharges pitch from discharging pipe 602 through helical blade 601, lay the operation

Example 2:

referring to fig. 1-5, a road paving device for road and bridge comprises a bottom plate 1 and a first box 2, the first box 2 is fixedly connected to the bottom plate 1, the first box 2 is provided with a motor 202, the output end of the motor 202 is connected with a first rotating shaft 203, the inner wall of the first box 2 is rotatably connected with a fourth rotating shaft 6, the fourth rotating shaft 6 is provided with a helical blade 601, the bottom of the first box 2 is provided with a discharging pipe 602, the side wall of the first box 2 is rotatably connected with a third rotating shaft 4, the third rotating shaft 4 is provided with a crankshaft 402, the bottom plate 1 is provided with a piston 403, the piston 403 is rotatably connected with the crankshaft 402, the bottom plate 1 is fixedly connected with a second box 5, a first hollow pipe 404 is connected between the second box 5 and the piston 403, the bottom of the bottom plate 1 is provided with a hollow cylinder 502, a material conveying pipe 503 is connected between the hollow cylinder 502 and the second box 5, the bottom plate 1 is rotatably connected with a fifth rotating shaft 7, the bottom of the fifth rotating shaft 7 is connected with a first rotating disc 703, the bottom of the first rotating disc 703 is provided with a brush 704, and the bottom of the bottom plate 1 is provided with a pressing plate 10.

A second rotating shaft 206 is rotatably connected in the first box 2, a second gear 205 and the stirring rod 3 are fixedly connected to the second rotating shaft 206 respectively, a first gear 204 is fixedly connected to the first rotating shaft 203, and the first gear 204 is meshed with the second gear 205.

The second rotating shaft 206 is fixedly connected with a scraper 301, the inner wall of the first box body 2 is provided with a baffle 302, and the scraper 301 is attached to the baffle 302.

A first belt 401 is connected between the third rotating shaft 4 and the first rotating shaft 203, and a second belt 603 is connected between the third rotating shaft 4 and the fourth rotating shaft 6.

A third gear 701 is connected to the fourth rotating shaft 6, a fourth gear 702 is connected to the fifth rotating shaft 7, the third gear 701 and the fourth gear 702 are connected in a meshing manner, and a third belt 901 is connected between the fourth rotating shaft 6 and the sixth rotating shaft 9.

The bottom of the bottom plate 1 is provided with a clamping plate 8, a rolling shaft 802 is arranged in the clamping plate 8, a fifth rotating shaft 7 is provided with a second rotating disc 801, and the second rotating disc 801 is attached to the rolling shaft 802.

The sixth rotating shaft 9 is provided with a cam 902, the bottom plate 1 is connected with a sliding rod 904 in a sliding mode, the sliding rod 904 is fixedly connected with a pushing plate 903, the pushing plate 903 abuts against the cam 902, the bottom of the sliding rod 904 is provided with a connecting plate 906, and a contraction rod 1001 and a second spring 1002 are connected between the pressing plate 10 and the connecting plate 906.

A first spring 907 is connected between the connecting plate 906 and the bottom plate 1, a guide rod 905 is fixedly connected to the bottom plate 1, and the guide rod 905 is slidably connected with the pushing plate 903

A one-way valve 405 is arranged in the first hollow pipe 404, a filter plate 501 is arranged in the second box body 5, and a feeding hole 201 is formed in the side wall of the first box body 2.

The side wall of the second box body 5 is provided with a side door 504, and the bottom of the bottom plate 1 is provided with wheels 101.

On the basis of embodiment 1, when the fourth rotating shaft 6 rotates, the fourth rotating shaft 6 drives the fifth rotating shaft 7 to rotate through the third gear 701 and the fourth gear 702, the fifth rotating shaft 7 drives the brush 704 to rotate, so as to clean the ground, meanwhile, the third rotating shaft 4 drives the piston 403 to move through the crankshaft 402, the piston 403 generates negative pressure in the second box 5 through the first hollow pipe 404, and the second box 5 sucks sundries such as leaves into the second box 5 through the hollow cylinder 502.

Example 3:

referring to fig. 1-5, a road paving device for road and bridge comprises a bottom plate 1 and a first box 2, the first box 2 is fixedly connected to the bottom plate 1, the first box 2 is provided with a motor 202, the output end of the motor 202 is connected with a first rotating shaft 203, the inner wall of the first box 2 is rotatably connected with a fourth rotating shaft 6, the fourth rotating shaft 6 is provided with a helical blade 601, the bottom of the first box 2 is provided with a discharging pipe 602, the side wall of the first box 2 is rotatably connected with a third rotating shaft 4, the third rotating shaft 4 is provided with a crankshaft 402, the bottom plate 1 is provided with a piston 403, the piston 403 is rotatably connected with the crankshaft 402, the bottom plate 1 is fixedly connected with a second box 5, a first hollow pipe 404 is connected between the second box 5 and the piston 403, the bottom of the bottom plate 1 is provided with a hollow cylinder 502, a material conveying pipe 503 is connected between the hollow cylinder 502 and the second box 5, the bottom plate 1 is rotatably connected with a fifth rotating shaft 7, the bottom of the fifth rotating shaft 7 is connected with a first rotating disc 703, the bottom of the first rotating disc 703 is provided with a brush 704, and the bottom of the bottom plate 1 is provided with a pressing plate 10.

A second rotating shaft 206 is rotatably connected in the first box 2, a second gear 205 and the stirring rod 3 are fixedly connected to the second rotating shaft 206 respectively, a first gear 204 is fixedly connected to the first rotating shaft 203, and the first gear 204 is meshed with the second gear 205.

The second rotating shaft 206 is fixedly connected with a scraper 301, the inner wall of the first box body 2 is provided with a baffle 302, and the scraper 301 is attached to the baffle 302.

A first belt 401 is connected between the third rotating shaft 4 and the first rotating shaft 203, and a second belt 603 is connected between the third rotating shaft 4 and the fourth rotating shaft 6.

A third gear 701 is connected to the fourth rotating shaft 6, a fourth gear 702 is connected to the fifth rotating shaft 7, the third gear 701 and the fourth gear 702 are connected in a meshing manner, and a third belt 901 is connected between the fourth rotating shaft 6 and the sixth rotating shaft 9.

The bottom of the bottom plate 1 is provided with a clamping plate 8, a rolling shaft 802 is arranged in the clamping plate 8, a fifth rotating shaft 7 is provided with a second rotating disc 801, and the second rotating disc 801 is attached to the rolling shaft 802.

The sixth rotating shaft 9 is provided with a cam 902, the bottom plate 1 is connected with a sliding rod 904 in a sliding mode, the sliding rod 904 is fixedly connected with a pushing plate 903, the pushing plate 903 abuts against the cam 902, the bottom of the sliding rod 904 is provided with a connecting plate 906, and a contraction rod 1001 and a second spring 1002 are connected between the pressing plate 10 and the connecting plate 906.

A first spring 907 is connected between the connecting plate 906 and the bottom plate 1, a guide rod 905 is fixedly connected to the bottom plate 1, and the guide rod 905 is slidably connected with the pushing plate 903

A one-way valve 405 is arranged in the first hollow pipe 404, a filter plate 501 is arranged in the second box body 5, and a feeding hole 201 is formed in the side wall of the first box body 2.

The side wall of the second box body 5 is provided with a side door 504, and the bottom of the bottom plate 1 is provided with wheels 101.

On the basis of embodiment 2, further, when the fourth rotating shaft 6 rotates, the fourth rotating shaft 6 drives the cam 902 to rotate through the third belt 901, the cam 902 drives the pushing plate 903 to reciprocate, the pushing plate 903 drives the compacting plate 10 to reciprocate through the sliding rod 904 and the connecting plate 906, and the paved asphalt pavement is compacted through the compacting plate 10.

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.