Concrete road construction trowelling device and using method thereof

Abstract

The invention relates to the technical field of road construction, and particularly discloses a concrete road construction trowelling device and a using method thereof.The concrete road construction trowelling device comprises a scraper, baffles are installed at the two ends of the scraper, copper plates are connected to the tops of the baffles through supporting rods, and any moving mechanisms are arranged at the bottoms of the copper plates. The automatic guided vehicle is used for driving the plate trailer to move, so that the scraper can move to scrape residual concrete attached to the bottom of the scraper, the residual concrete attached to the bottom of the scraper can be completely scraped, and it is avoided that after the concrete attached to the bottom of the scraper is solidified, the next screeding treatment on a concrete pavement is affected; concrete attached to the bottom of the scraping plate can be automatically scraped, the cleanliness of the bottom of the scraping plate is guaranteed, the scraping plate can conveniently flatten the concrete pavement next time, the concrete attached to the bottoms of the two baffles can be scraped through the scraper, and the cleanliness of the bottoms of the two baffles is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, and in particular to a concrete road construction leveling device and a use method thereof. Background Art

[0002] After searching, it was found that the Chinese patent with application number 202121734354.0 disclosed "a concrete road construction smoothing device, comprising a drive box, rotating scraper assemblies are installed on both sides of the drive box, scrapers are installed under the rotating scraper assemblies on both sides, and a scraper is installed in the middle of the lower surface of the support plate through a width adjustment mechanism, and a dust cover is installed on the outside of each scraper, and support wheels are installed on both sides of the rear end of the lower surface of the middle part of the drive box". However, when the above-mentioned concrete road construction smoothing device is in use, after the scraper smoothes the concrete pavement, residual concrete will be attached to the scraper, and the above-mentioned concrete road construction smoothing device is not convenient for removing the concrete attached to the scraper, and after the concrete attached to the scraper solidifies on the scraper, the next time the scraper is used to smooth the concrete, the solidified concrete on the scraper will cause streaks on the smoothed concrete surface, affecting the effect of smoothing the concrete next time. Therefore, in order to solve such problems, a concrete road construction smoothing device and a method of using the same are proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a concrete road construction leveling device and a method of using the same.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A concrete road construction trowel device comprises a scraper, baffles are installed at both ends of the scraper, a copper plate is connected to the top of the baffle through a support rod, and an arbitrary moving mechanism is arranged at the bottom of the copper plate;

[0006] A third electric telescopic rod is installed at the bottom of the arbitrary moving mechanism, a mounting box is installed at the end of the piston rod of the third electric telescopic rod, a concrete delivery port is installed at the bottom of the mounting box, a collecting component for collecting concrete is arranged on the top of the scraper, the collecting component is connected to the concrete delivery port, and a cleaning component for cleaning concrete attached to the bottom of the scraper is arranged on the side of the mounting box;

[0007] The two baffles are provided with mounting mechanisms for mounting the scraper.

[0008] Preferably, the arbitrary moving mechanism includes an automatic guided vehicle installed on the top of the copper plate, a first electromagnet is installed at the bottom of the automatic guided vehicle, the first electromagnet attracts the second electromagnet, the second electromagnet is located below the copper plate, a plurality of through holes are opened on the top of the copper plate, a cart is installed at the bottom of the second electromagnet, a mounting plate is installed at the bottom of the cart, and a third electric telescopic rod is installed at the bottom of the mounting plate.

[0009] Preferably, the cleaning component includes an opening on the side of the installation box, the opening is connected to the installation box, a fourth electric telescopic rod is installed in the installation box, a fixed block is installed at the end of the piston rod of the fourth electric telescopic rod, and a scraper is installed on the side of the fixed block away from the installation box.

[0010] Preferably, a reinforcement block is installed at the end of the piston rod of the third electric telescopic rod, and the reinforcement block is installed on the top of the installation box, and the installation box is located between the two baffles.

[0011] Preferably, the collecting assembly comprises a collecting trough opened on the top of the scraper, a concrete delivery pump is installed in the collecting trough, a delivery end of the concrete delivery pump is connected to a bellows, and an end of the bellows is connected to a concrete delivery port.

[0012] Preferably, fixing rods are installed on opposite sides of the two baffles, mounting strips are installed on the ends of the fixing rods, a second electric telescopic rod is installed on the side of the mounting strip close to the baffle, the piston rod end of the second electric telescopic rod passes through the baffle and is inserted into the collecting groove, and a push plate is installed on the piston rod end of the second electric telescopic rod, and the push plate is located in the collecting groove.

[0013] Preferably, a ramp plate is installed on the side of the scraper, the ramp plate is installed between two baffles, the top of the ramp plate is flush with the top of the scraper, a limit frame is installed on the top of the copper plate, and the automatic guided vehicle is located in the limit frame.

[0014] Preferably, the mounting mechanism comprises a mounting plate, fixing frames are mounted on both sides of the mounting plate, first electric telescopic rods are mounted on the ends of the fixing frames, and piston rod ends of the two first electric telescopic rods are respectively connected to the tops of the two baffles.

[0015] Preferably, a mounting block is installed at the end of the fixing frame, the first electric telescopic rod is installed at the bottom of the mounting block, and a mounting hole for connecting to a motor vehicle is opened on the side of the mounting plate.

[0016] A method for using a concrete road construction smoothing device, the method comprising the following steps:

[0017] S1: Connect the mounting plate to the motor vehicle, use the motor vehicle to drive the mounting plate to move so as to move the scraper, and use the scraper to smooth the concrete;

[0018] S2: The excess concrete between the scraper and the two baffles enters the collecting tank for temporary storage;

[0019] S3: Using an automatic guided vehicle to drive the concrete delivery port to move arbitrarily, the concrete delivery port can be moved to a position where concrete is lacking, and the concrete temporarily stored in the collection tank is delivered to the position where concrete is lacking through the concrete delivery port for filling and leveling;

[0020] S4: Smoothing the filled concrete with a scraper;

[0021] S5: Use the two first electric telescopic rods to drive the two baffles and the scraper to move upward, use the third electric telescopic rod to push the scraper to move downward, move the scraper down to under the scraper, use the automatic guided vehicle and the fourth electric telescopic rod to move the scraper to under the scraper, and make the scraper contact with the bottom of the scraper, and use the automatic guided vehicle to drive the scraper to move to scrape off the concrete attached to the bottom of the scraper.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1: In the present invention, an automatic guided vehicle is used to drive the trolley to move, so that the scraper can move to scrape off the residual concrete attached to the bottom of the scraper. The residual concrete attached to the bottom of the scraper can be scraped off cleanly to avoid the concrete attached to the bottom of the scraper from affecting the next smoothing of the concrete pavement after solidification. The scraping of the concrete attached to the bottom of the scraper can be completed automatically to ensure the cleanliness of the bottom of the scraper, which is convenient for the scraper to smooth the concrete pavement next time. The scraper can also be used to scrape off the concrete attached to the bottom of the two baffles to ensure the cleanliness of the bottom of the two baffles.

[0024] 2: The present invention utilizes the coordinated use of a scraper, a slope plate and two baffles, and the excess concrete between the scraper and the two baffles can be collected into a collecting trough, so as to avoid excessive concrete there being squeezed to other parts when smoothing the concrete, resulting in the need for smoothing other parts. The excess concrete between the scraper and the two baffles can be uniformly collected into the collecting trough for temporary storage, so as to facilitate filling of the area with insufficient concrete with concrete.

[0025] 3: When the automatic guided vehicle in the present invention moves, it can drive the cart to move, and then drive the concrete delivery port to move. The concrete delivery port can be moved to an area where concrete is insufficient. The concrete delivery pump extracts the excess concrete collected in the collection tank into the corrugated pipe. The concrete is filled into the area where concrete is insufficient through the corrugated pipe and the concrete delivery port. Concrete can be added to the area where concrete is insufficient and then the area can be smoothed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a concrete road construction leveling device proposed by the present invention from a first perspective;

[0027] Figure 2 This is a structural schematic diagram of a concrete road construction leveling device proposed by the present invention from a second perspective;

[0028] Figure 3 This is a structural schematic diagram of a concrete road construction leveling device proposed by the present invention from a third perspective;

[0029] Figure 4 A schematic diagram of the connection between a scraper and a baffle of a concrete road construction leveling device proposed by the present invention;

[0030] Figure 5 A schematic diagram of the connection between a scraper and a slope plate of a concrete road construction leveling device proposed by the present invention;

[0031] Figure 6 A schematic diagram of the connection between a mounting plate and a third electric telescopic rod of a concrete road construction leveling device proposed by the present invention;

[0032] Figure 7 The present invention is a schematic structural diagram of an installation box of a concrete road construction leveling device.

[0033] In the figure: 1. scraper; 2. baffle; 3. support rod; 4. copper plate; 5. limit frame; 6. through hole; 7. automatic guided vehicle; 8. mounting plate; 9. fixing frame; 10. mounting block; 11. first electric telescopic rod; 12. concrete delivery pump; 13. bellows; 14. push plate; 15. fixing rod; 16. mounting strip; 17. second electric telescopic rod; 18. flatbed truck; 19. ramp plate; 20. collecting trough; 21. mounting sheet; 22. third electric telescopic rod; 23. reinforcement block; 24. mounting box; 25. concrete delivery port; 26. opening; 27. fourth electric telescopic rod; 28. fixing block; 29. ​​scraper. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-7 , a concrete road construction leveling device, comprising a scraper 1, baffles 2 are installed at both ends of the scraper 1, a copper plate 4 is connected to the top of the baffle 2 through a support rod 3, and an arbitrary moving mechanism is arranged at the bottom of the copper plate 4;

[0036] A third electric telescopic rod 22 is installed at the bottom of any moving mechanism, a mounting box 24 is installed at the end of the piston rod of the third electric telescopic rod 22, a concrete delivery port 25 is installed at the bottom of the mounting box 24, a collecting component for collecting concrete is arranged at the top of the scraper 1, the collecting component is connected to the concrete delivery port 25, and a cleaning component for cleaning concrete attached to the bottom of the scraper 1 is arranged on the side of the mounting box 24;

[0037] The two baffles 2 are provided with mounting mechanisms for mounting the scraper 1 .

[0038] As a technical optimization scheme of the present invention, any moving mechanism includes an automatic guided vehicle 7 installed on the top of the copper plate 4, a first electromagnet is installed at the bottom of the automatic guided vehicle 7, the first electromagnet attracts the second electromagnet, the second electromagnet is located below the copper plate 4, a plurality of through holes 6 are opened on the top of the copper plate 4, a cart 18 is installed at the bottom of the second electromagnet, a mounting plate 21 is installed at the bottom of the cart 18, a third electric telescopic rod 22 is installed at the bottom of the mounting plate 21, and the mounting plate 21 facilitates the connection between the cart 18 and the third electric telescopic rod 22.

[0039] As a technical optimization solution of the present invention, the cleaning component includes an opening 26 opened on the side of the mounting box 24, the opening 26 is connected to the mounting box 24, a fourth electric telescopic rod 27 is installed in the mounting box 24, a fixed block 28 is installed at the end of the piston rod of the fourth electric telescopic rod 27, a scraper 29 is installed on the side of the fixed block 28 away from the mounting box 24, and the fixed block 28 can facilitate the connection between the scraper 29 and the piston rod of the fourth electric telescopic rod 27.

[0040] As a technical optimization solution of the present invention, a reinforcement block 23 is installed at the end of the piston rod of the third electric telescopic rod 22, and the reinforcement block 23 is installed on the top of the mounting box 24. The mounting box 24 is located between the two baffles 2. The reinforcement block 23 can increase the connection strength between the piston rod end of the third electric telescopic rod 22 and the mounting box 24.

[0041] As a technical optimization solution of the present invention, the collecting component includes a collecting trough 20 opened on the top of the scraper 1, and a concrete pump 12 is installed in the collecting trough 20. The delivery end of the concrete pump 12 is connected to a bellows 13, and the end of the bellows 13 is connected to the concrete delivery port 25. The concrete pump 12 can facilitate the delivery of concrete in the collecting trough 20.

[0042] As a technical optimization solution of the present invention, a fixing rod 15 is installed on the opposite sides of the two baffles 2, and a mounting bar 16 is installed on the end of the fixing rod 15. A second electric telescopic rod 17 is installed on the side of the mounting bar 16 close to the baffle 2. The end of the piston rod of the second electric telescopic rod 17 passes through the baffle 2 and is inserted into the collecting tank 20, and a push plate 14 is installed at the end of the piston rod of the second electric telescopic rod 17, and the push plate 14 is located in the collecting tank 20.

[0043] As a technical optimization solution of the present invention, a ramp plate 19 is installed on the side of the scraper 1, and the ramp plate 19 is installed between the two baffles 2. The top of the ramp plate 19 is flush with the top of the scraper 1. A limit frame 5 is installed on the top of the copper plate 4. The automatic guided vehicle 7 is located in the limit frame 5. The limit frame 5 can provide a limit for the automatic guided vehicle 7 to prevent the automatic guided vehicle 7 from falling from the copper plate 4.

[0044] As a technical optimization solution of the present invention, the installation mechanism includes a mounting plate 8, with fixing frames 9 installed on both sides of the mounting plate 8, and first electric telescopic rods 11 installed at the ends of the fixing frames 9, and the piston rod ends of the two first electric telescopic rods 11 are respectively connected to the tops of the two baffles 2.

[0045] As a technical optimization solution of the present invention, a mounting block 10 is installed at the end of the fixing frame 9, the first electric telescopic rod 11 is installed at the bottom of the mounting block 10, and a mounting hole for connecting to a motor vehicle is opened on the side of the mounting plate 8. The mounting plate 8 and the mounting hole can facilitate the connection of the device with the motor vehicle.

[0046] A method for using a concrete road construction smoothing device, the method comprising the following steps:

[0047] S1: Connect the mounting plate 8 to the motor vehicle, use the motor vehicle to drive the mounting plate 8 to move the scraper 1, and use the scraper 1 to smooth the concrete;

[0048] S2: the excess concrete between the scraper 1 and the two baffles 2 enters the collecting tank 20 for temporary storage;

[0049] S3: The concrete delivery port 25 is driven to move arbitrarily by the automatic guided vehicle 7, so that the concrete delivery port 25 can be moved to a position where concrete is lacking, and the concrete temporarily stored in the collection tank 20 is delivered to the position where concrete is lacking through the concrete delivery port 25 for filling and leveling;

[0050] S4: Smoothing the filled concrete with a scraper 1;

[0051] S5: Use the two first electric telescopic rods 11 to drive the two baffles 2 and the scraper 1 to move upward, use the third electric telescopic rod 22 to push the scraper 29 to move downward, move the scraper 29 down to below the scraper 1, use the automatic guided vehicle 7 and the fourth electric telescopic rod 27 to move the scraper 29 to below the scraper 1, and make the scraper 29 contact with the bottom of the scraper 1, and use the automatic guided vehicle 7 to drive the scraper 29 to move to scrape off the concrete attached to the bottom of the scraper 1.

[0052] When the present invention is used, when it is necessary to smooth the concrete on the concrete road surface, firstly, it is connected to the motor vehicle through the mounting plate 8 so that the device is located above the concrete on the concrete road surface that needs to be smoothed.

[0053] At the same time, the two first electric telescopic rods 11 are started, and the piston rods of the first electric telescopic rods 11 push the two baffles 2 downward, and the downward movement of the two baffles 2 can drive the scraper 1 to move downward until the two baffles 2 and the bottom of the scraper 1 contact the concrete upper surface of the concrete road surface that needs to be smoothed and stop.

[0054] At this time, the device is driven by a motor vehicle to move, so that the scraper 1 moves toward the mounting plate 8 .

[0055] When the scraper 1 moves on the upper surface of the concrete on the concrete pavement that needs to be smoothed, the scraper 1 can be used to smooth the concrete on the concrete pavement. When there is too much concrete between the scraper 1 and the two baffles 2, the excess concrete can be moved by the scraper 1 and the ramp plate 19 so that the excess concrete enters the collecting trough 20 opened on the top of the scraper 1 through the ramp plate 19. By using the scraper 1, the ramp plate 19 and the two baffles 2 in coordination, the excess concrete between the scraper 1 and the two baffles 2 can be collected in the collecting trough 20 to avoid excessive concrete there being squeezed to other parts when smoothing it, resulting in the need for smoothing other parts. The excess concrete between the scraper 1 and the two baffles 2 can be uniformly collected in the collecting trough 20 for temporary storage, which is convenient for filling the area with insufficient concrete with concrete.

[0056] When there is insufficient concrete on the concrete pavement that needs to be smoothed, first, start the automatic guided vehicle 7, and the automatic guided vehicle 7 moves on the copper plate 4. By utilizing the mutual attraction of the first electromagnet and the second electromagnet, when the automatic guided vehicle 7 moves, it can drive the cart 18 to move, and then drive the concrete delivery port 25 to move, so that the concrete delivery port 25 can be moved to the area where the concrete is insufficient. At this time, start the concrete delivery pump 12, and the concrete delivery pump 12 can extract the excess concrete collected in the collection tank 20 into the bellows 13. The concrete is filled into the area where the concrete is insufficient through the bellows 13 and the concrete delivery port 25. The area where the concrete is insufficient can be smoothed after adding concrete.

[0057] After the concrete pavement that needs to be smoothed is smoothed, the two first electric telescopic rods 11 are started at the same time, and the piston rod of the first electric telescopic rod 11 is retracted to drive the baffle 2 to move upward, and the upward movement of the two baffles 2 can drive the scraper 1 to move upward, and then the scraper 1 and the two baffles 2 move up and break away from the contact with the concrete pavement. At this time, the third electric telescopic rod 22 is started, and the piston rod of the third electric telescopic rod 22 pushes the installation box 24 to move downward, and the downward movement of the installation box 24 can drive the fourth electric telescopic rod 27 and the scraper 29 to move downward until the scraper 29 moves down to the bottom of the scraper 1 and stops. At this time, the automatic guided vehicle 7 is used to move the installation box 24 to the side below the scraper 1, and the fourth electric telescopic rod 27 is started. The piston rod of the fourth electric telescopic rod 27 pushes the fixed block 28 to move away from the installation box 24, thereby causing the scraper 29 to move away The movement of the mounting box 24 can move the scraper 29 to the bottom of the scraper 1, and the third electric telescopic rod 22 is started again to move the scraper 29 upward until the scraper 29 contacts the bottom of the scraper 1 and stops. At this time, the automatic guided vehicle 7 is used to drive the trolley 18 to move, so that the scraper 29 can be moved to scrape off the residual concrete attached to the bottom of the scraper 1. The residual concrete attached to the bottom of the scraper 1 can be scraped off cleanly to prevent the concrete attached to the bottom of the scraper 1 from solidifying and affecting the next smoothing of the concrete pavement. The scraping of the concrete attached to the bottom of the scraper 1 can be automatically completed to ensure the cleanliness of the bottom of the scraper 1, which is convenient for the scraper 1 to smooth the concrete pavement next time. The scraper 29 can also be used to scrape off the concrete attached to the bottom of the two baffles 2 to ensure the cleanliness of the bottom of the two baffles 2.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete road construction smoothing device, comprising a scraper (1), characterized in that: Baffles (2) are installed at both ends of the scraper (1); the top of the baffle (2) is connected to a copper plate (4) via a support rod (3); and an arbitrary moving mechanism is arranged at the bottom of the copper plate (4); A third electric telescopic rod (22) is installed at the bottom of the arbitrary moving mechanism, a mounting box (24) is installed at the end of the piston rod of the third electric telescopic rod (22), a concrete delivery port (25) is installed at the bottom of the mounting box (24), a collection component for collecting concrete is arranged at the top of the scraper (1), the collection component is connected to the concrete delivery port (25), and a cleaning component for cleaning concrete attached to the bottom of the scraper (1) is arranged on the side of the mounting box (24); The two baffles (2) are provided with mounting mechanisms for mounting the scraper (1).

2. A concrete road construction smoothing device according to claim 1, characterized in that: The arbitrary moving mechanism comprises an automatic guided vehicle (7) mounted on the top of the copper plate (4), a first electromagnet is mounted on the bottom of the automatic guided vehicle (7), a second electromagnet is attracted by the first electromagnet, the second electromagnet is located below the copper plate (4), a plurality of through holes (6) are provided on the top of the copper plate (4), a trolley (18) is mounted on the bottom of the second electromagnet, a mounting plate (21) is mounted on the bottom of the trolley (18), and a third electric telescopic rod (22) is mounted on the bottom of the mounting plate (21).

3. A concrete road construction leveling device according to claim 1, characterized in that: The cleaning component comprises an opening (26) formed on a side of the installation box (24), the opening (26) being in communication with the installation box (24), a fourth electric telescopic rod (27) being installed in the installation box (24), a fixing block (28) being installed at the end of a piston rod of the fourth electric telescopic rod (27), and a scraper (29) being installed on a side of the fixing block (28) away from the installation box (24).

4. A concrete road construction smoothing device according to claim 1, characterized in that: A reinforcing block (23) is installed at the end of the piston rod of the third electric telescopic rod (22), and the reinforcing block (23) is installed on the top of the installation box (24), and the installation box (24) is located between the two baffles (2).

5. A concrete road construction smoothing device according to claim 1, characterized in that: The collecting assembly comprises a collecting trough (20) opened on the top of the scraper (1), a concrete delivery pump (12) is installed in the collecting trough (20), the delivery end of the concrete delivery pump (12) is connected to a bellows (13), and the end of the bellows (13) is connected to a concrete delivery port (25).

6. A concrete road construction smoothing device according to claim 5, characterized in that: A fixing rod (15) is installed on opposite sides of the two baffles (2), a mounting strip (16) is installed at the end of the fixing rod (15), a second electric telescopic rod (17) is installed on the side of the mounting strip (16) close to the baffle (2), the piston rod end of the second electric telescopic rod (17) passes through the baffle (2) and is inserted into the collection tank (20), and a push plate (14) is installed at the piston rod end of the second electric telescopic rod (17), and the push plate (14) is located in the collection tank (20).

7. A concrete road construction leveling device according to claim 2, characterized in that: A ramp plate (19) is installed on the side of the scraper (1), the ramp plate (19) is installed between the two baffles (2), the top of the ramp plate (19) is flush with the top of the scraper (1), a limit frame (5) is installed on the top of the copper plate (4), and the automatic guided vehicle (7) is located in the limit frame (5).

8. A concrete road construction smoothing device according to claim 1, characterized in that: The mounting mechanism comprises a mounting plate (8), fixing frames (9) are mounted on both sides of the mounting plate (8), first electric telescopic rods (11) are mounted on the ends of the fixing frames (9), and piston rod ends of the two first electric telescopic rods (11) are respectively connected to the tops of the two baffles (2).

9. A concrete road construction smoothing device according to claim 8, characterized in that: A mounting block (10) is installed at the end of the fixing frame (9), a first electric telescopic rod (11) is installed at the bottom of the mounting block (10), and a mounting hole for connecting to a motor vehicle is opened on the side of the mounting plate (8).

10. A method for using a concrete road construction smoothing device as claimed in any one of claims 1 to 9, characterized in that: The method of use includes the following steps: S1: connecting the mounting plate (8) to a motor vehicle, using the motor vehicle to drive the mounting plate (8) to move so as to move the scraper (1), and using the scraper (1) to smooth the concrete; S2: the excess concrete between the scraper (1) and the two baffles (2) enters the collecting tank (20) for temporary storage; S3: using the automatic guided vehicle (7) to drive the concrete delivery port (25) to move arbitrarily, so that the concrete delivery port (25) can be moved to a position where concrete is lacking, and the concrete temporarily stored in the collection tank (20) is delivered to the position where concrete is lacking through the concrete delivery port (25) for filling and leveling; S4: Smoothing the filled concrete with a scraper (1); S5: using the two first electric telescopic rods (11) to drive the two baffles (2) and the scraper (1) to move upward, using the third electric telescopic rod (22) to push the scraper (29) to move downward, and moving the scraper (29) to below the scraper (1), using the automatic guided vehicle (7) and the fourth electric telescopic rod (27) to move the scraper (29) to below the scraper (1), and making the scraper (29) contact with the bottom of the scraper (1), and using the automatic guided vehicle (7) to drive the scraper (29) to move to scrape away the concrete attached to the bottom of the scraper (1).

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