Concrete precast guardrail pouring automatic troweling device

Abstract

The application belongs to the field of concrete precast guardrail pouring and troweling equipment, and particularly relates to a concrete precast guardrail pouring and automatic troweling device, which comprises two portal frames, a longitudinal beam fixedly connected between the upper ends of the two portal frames, a longitudinal displacement driving mechanism installed on the longitudinal beam, two longitudinal linear guide assemblies installed on the longitudinal beam, longitudinal moving frames fixedly connected to the two longitudinal linear guide assemblies, longitudinal troweling mechanisms installed on the two longitudinal moving frames, a longitudinal displacement driving mechanism for driving the two longitudinal moving frames to reciprocate in the longitudinal direction, a cross beam fixedly connected below the longitudinal beam, a transverse displacement driving mechanism and a transverse linear guide assembly installed on the cross beam, a transverse moving frame fixedly connected to the transverse linear guide assembly, a transverse troweling mechanism installed on the transverse moving frame, and a transverse displacement driving mechanism for driving the transverse moving frame to reciprocate in the transverse direction. The application not only reduces the labor intensity of workers, but also guarantees the surface quality of the concrete guardrail.

Description

Technical Field

[0001] This invention relates to an automatic smoothing device for pouring precast concrete guardrails, belonging to the field of equipment for pouring and smoothing precast concrete guardrails. Background Technology

[0002] Currently, on precast concrete guardrail production lines, after the concrete is placed and vibrated by the mold truck, the surface of the poured concrete guardrail needs to be smoothed to ensure its quality. However, there is currently no automatic smoothing device for the concrete guardrail surface, which hinders the automation of the entire production line. Existing technology relies on manual smoothing with hand tools. This is labor-intensive for workers, and because the guardrail surface is large, manual smoothing requires multiple operations, leading to bumps on the concrete surface. This necessitates secondary grinding and repair on the finished guardrail after curing, significantly impacting the level of automation. Furthermore, the grinding process generates considerable dust, affecting the working environment and the health of workers. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an automatic smoothing device for precast concrete guardrail pouring that can automatically smooth the concrete during the pouring process.

[0004] The automatic smoothing device for precast concrete guardrail pouring of the present invention includes two gantry frames, with a longitudinal beam fixedly connected between the upper ends of the two gantry frames. A longitudinal displacement drive mechanism is installed on the longitudinal beam, and two longitudinal linear guide components are installed on the longitudinal beam. A longitudinal moving frame is fixedly connected to the movable parts of the two longitudinal linear guide components, and a longitudinal smoothing mechanism is installed on each of the two longitudinal moving frames. The longitudinal smoothing mechanism includes a first lifting drive component installed on the longitudinal moving frame. A longitudinal scraper frame is connected to the movable part of the first lifting drive component, and a longitudinal scraper is connected below the longitudinal scraper frame. The longitudinal displacement drive mechanism is used to drive the two longitudinal moving frames to reciprocate in the longitudinal direction. A crossbeam is fixedly connected below the longitudinal beam, and a transverse displacement drive mechanism and a transverse linear guide component are installed on the crossbeam. A transverse moving frame is fixedly connected to the movable part of the transverse linear guide component, and a transverse smoothing mechanism is installed on the transverse moving frame. A second lifting drive component is installed on the transverse smoothing mechanism, and a transverse scraper frame is connected to the movable part of the second lifting drive component. A transverse scraper is connected below the transverse scraper frame, and the transverse displacement drive mechanism is used to drive the transverse moving frame to reciprocate in the transverse direction.

[0005] Preferably, the first lifting drive assembly includes a first lifting cylinder mounted on a longitudinal moving frame. The longitudinal moving frame is provided with a set of guide holes, and a first guide shaft is slidably connected in each guide hole. A first upper connecting plate is connected between the upper ends of each first guide shaft, and a first lower connecting plate is connected between the lower ends of each first guide shaft. The piston rod of the first lifting cylinder is fixedly connected to the first upper connecting plate, and the longitudinal scraper frame is fixedly connected to the first lower connecting plate.

[0006] Preferably, the longitudinal displacement drive mechanism includes a mounting plate, two roller brackets, and two drive rods. The two drive rods are respectively fixedly connected to their corresponding longitudinal moving frames via a connecting rod. The mounting plate and roller brackets are both fixedly connected to the longitudinal beam. Rollers are rotatably connected to the two roller brackets. The two rollers are respectively supported on the lower side of the two drive rods. A longitudinal rack is fixedly connected to the opposite side of the two drive rods. A longitudinal drive motor is mounted on the mounting plate. A longitudinal gear that meshes with both longitudinal racks is connected to the longitudinal drive motor.

[0007] Preferably, the longitudinal linear guide assembly includes a set of longitudinal linear guide rails fixedly connected to the longitudinal beam, each longitudinal linear guide rail having a longitudinal slider slidably connected thereto, and each longitudinal slider being fixedly connected to the longitudinal moving frame.

[0008] Preferably, the lateral displacement drive mechanism includes a lateral rack fixedly connected to the crossbeam and a lateral drive motor mounted on the lateral moving frame, wherein a lateral gear meshing with the lateral rack is connected to the lateral drive motor.

[0009] Preferably, the transverse linear guide assembly includes a set of transverse linear guide rails fixedly connected to the crossbeam, each transverse linear guide rail having a transverse slider slidably connected thereto, and each transverse slider being fixedly connected to the transverse moving frame.

[0010] Preferably, a first vibration motor is installed on the longitudinal scraper frame, and the longitudinal scraper is fixedly connected to the first vibration motor; a second vibration motor is installed on the transverse scraper frame, and the transverse scraper is fixedly connected to the second vibration motor.

[0011] Preferably, the second lifting drive assembly includes a second lifting cylinder fixedly installed on the transverse moving frame and a set of second guide sleeves. Each second guide sleeve is connected to a second guide shaft. The upper ends of each second guide shaft are connected to a second upper connecting plate, and the lower ends of each second guide shaft are connected to a second lower connecting plate. The piston rod of the second lifting cylinder is fixedly connected to the second upper connecting plate, and the transverse scraper frame is fixedly connected to the second lower connecting plate.

[0012] Preferably, both ends of the crossbeam are fixedly connected to a third guide sleeve, and each third guide sleeve is slidably connected to a third guide shaft. The upper ends of each third guide shaft are connected to a lifting rod located at the top of the second upper connecting plate, and the lower ends of each third guide shaft are fixedly connected to a lifting frame. The lifting frame is provided with a set of support legs, and each support leg is threadedly connected to an adjusting screw. A roller frame is fixedly connected to the second lower connecting plate, and a roller adapted to the lifting frame is rotatably connected to the roller frame.

[0013] The beneficial effects of this invention compared to the prior art are:

[0014] The automatic smoothing device for precast concrete guardrail pouring described in this invention uses a longitudinal displacement drive mechanism to drive two longitudinal moving frames to move relative to each other under the action of two longitudinal linear guide components. This causes the two longitudinal smoothing mechanisms to move relative to each other, enabling the two longitudinal scrapers to automatically smooth the concrete guardrail from both ends towards the middle. A transverse displacement drive mechanism drives a transverse moving frame to move under the action of a transverse linear guide component, thereby causing the transverse smoothing mechanism to move. This enables the transverse scrapers to automatically smooth the concrete guardrail from one side to the other, scraping excess concrete out of the mold truck. This achieves automatic smoothing of the concrete guardrail. On the one hand, it eliminates the need for manual labor, reducing the labor intensity of workers. On the other hand, the longitudinal and transverse scrapers can be designed according to the dimensions of the concrete guardrail, achieving one-time smoothing, thus ensuring the surface quality of the concrete guardrail and effectively reducing the manual input for subsequent guardrail surface repair work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the longitudinal smoothing mechanism of the present invention;

[0017] Figure 3 This is a structural schematic diagram of the longitudinal displacement driving mechanism and the longitudinal linear guide assembly of the present invention;

[0018] Figure 4 yes Figure 3 The main view;

[0019] Figure 5 This is a structural schematic diagram of the lateral displacement driving mechanism, the lateral linear guide assembly, and the lateral smoothing mechanism of the present invention;

[0020] Figure 6 yes Figure 5 The main view.

[0021] In the diagram: 1. Gantry frame; 2. Mold cart conveyor rail; 3. Mold cart; 4. Concrete guardrail; 5. Longitudinal smoothing mechanism; 6. Longitudinal beam; 7. Longitudinal displacement drive mechanism; 8. Crossbeam; 9. Longitudinal linear guide assembly; 10. Longitudinal moving frame; 11. Lateral displacement drive mechanism; 12. Lateral moving frame; 13. Lateral smoothing mechanism; 14. First guide shaft; 15. First upper connecting plate; 16. Guide hole; 17. First lower connecting plate; 18. Longitudinal scraper frame; 19. First vibration motor; 20. Longitudinal scraper; 21. First lifting cylinder; 22. Support roller; 23. Mounting plate; 24. Longitudinal drive motor; 25. Longitudinal gear. 26. Drive rod; 27. Connecting rod; 28. Longitudinal slider; 29. ​​Roller support frame; 30. Longitudinal linear guide rail; 31. Second guide shaft; 32. Second guide sleeve; 33. Second lifting cylinder; 34. Second upper connecting plate; 35. Lateral drive motor; 36. Second lower connecting plate; 37. Lateral gear; 38. Third guide sleeve; 39. Third guide shaft; 40. Lateral slider; 41. Roller frame; 42. Roller; 43. Lateral scraper frame; 44. Second vibration motor; 45. Lateral scraper; 46. Lifting frame; 47. Support leg; 48. Adjusting screw; 49. Lifting rod; 50. Lateral rack; 51. Lateral linear guide rail. Detailed Implementation

[0022] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0023] Example 1:

[0024] like Figures 1 to 6 As shown, the automatic smoothing device for precast concrete guardrail pouring of the present invention includes two gantry frames 1, with a longitudinal beam 6 fixedly connected between the upper ends of the two gantry frames 1. A longitudinal displacement drive mechanism 7 is installed on the longitudinal beam 6, and two longitudinal linear guide components 9 are installed on the longitudinal beam 6. A longitudinal moving frame 10 is fixedly connected to the movable part of each of the two longitudinal linear guide components 9. A longitudinal smoothing mechanism 5 is installed on each of the two longitudinal moving frames 10. The longitudinal smoothing mechanism 5 includes a first lifting drive component installed on the longitudinal moving frame 10. A longitudinal scraper frame 18 is connected to the movable part of the first lifting drive component, and a longitudinal scraper 20 is connected below the longitudinal scraper frame 18. The longitudinal displacement drive mechanism 7 is used to drive the two longitudinal moving frames 10 to reciprocate in the longitudinal direction. A crossbeam 8 is fixedly connected to the lower part of the longitudinal beam 6. A transverse displacement drive mechanism 11 and a transverse linear guide assembly are installed on the crossbeam 8. A transverse moving frame 12 is fixedly connected to the movable part of the transverse linear guide assembly. A transverse smoothing mechanism 13 is installed on the transverse moving frame 12. A second lifting drive assembly is installed on the transverse smoothing mechanism 13. A transverse scraper frame 43 is connected to the movable part of the second lifting drive assembly. A transverse scraper 45 is connected to the lower part of the transverse scraper frame 43. The transverse displacement drive mechanism 11 is used to drive the transverse moving frame 12 to reciprocate in the transverse direction.

[0025] In use, the two gantry frames 1 of this device are installed across the mold cart conveyor rail 2. The mold cart conveyor rail 2 transports the mold cart 3, after the concrete has been poured, to this process. Then, the two first lifting drive components are activated, driving the two longitudinal scraper frames 18 to move downwards, and driving the two longitudinal scrapers 20 to move downwards to the surface of the concrete guardrail 4. Then, the longitudinal displacement drive mechanism 7 is activated, driving the two longitudinal moving frames 10 to move relative to each other under the action of the two longitudinal linear guide components 9, thereby driving the two longitudinal smoothing mechanisms 5 to move relative to each other, so that the two longitudinal scrapers 20 automatically smooth from both ends of the concrete guardrail 4 to the middle part. After longitudinal smoothing, the two first lifting drive components reverse... The first action causes the two longitudinal scrapers 20 to return to their original position. Then, the longitudinal displacement drive mechanism 7 reverses its action, causing the two longitudinal scrapers 20 to return to their original position on both sides. Then, the second lifting drive assembly moves, causing the transverse scraper frame 43 to move downward, which in turn causes the transverse scraper 45 to move downward to the surface of the concrete guardrail 4. Then, the transverse displacement drive mechanism 11 moves, causing the transverse moving frame 12 to move under the action of the transverse linear guide assembly, thereby causing the transverse smoothing mechanism 13 to move. This allows the transverse scraper 45 to automatically smooth the concrete guardrail 4 from one side to the other, and scrapes the excess concrete out of the mold trolley 3, thus achieving automatic smoothing of the concrete guardrail 4.

[0026] The automatic smoothing device for precast concrete guardrail pouring described in this invention eliminates the need for manual operation by workers, reducing their labor intensity. Furthermore, the longitudinal scraper 20 and transverse scraper 45 can be designed according to the dimensions of the concrete guardrail 4 to achieve one-time smoothing, thereby ensuring the surface quality of the concrete guardrail 4 and effectively reducing the manual input for subsequent guardrail surface repair work.

[0027] Example 2:

[0028] like Figures 1 to 6 As shown, based on Example 1,

[0029] Preferably, the first lifting drive assembly includes a first lifting cylinder 21 mounted on a longitudinal moving frame 10. The longitudinal moving frame 10 is provided with a set of guide holes 16. A first guide shaft 14 is slidably connected in each guide hole 16. A first upper connecting plate 15 is connected between the upper ends of each first guide shaft 14, and a first lower connecting plate 17 is connected between the lower ends of each first guide shaft 14. The piston rod of the first lifting cylinder 21 is fixedly connected to the first upper connecting plate 15. The longitudinal scraper frame 18 is fixedly connected to the first lower connecting plate 17. When the first lifting cylinder 21 is activated, its piston rod extends and retracts, which drives the first guide shaft 14 to move up and down under the action of the guide holes 16 through the first upper connecting plate 15. Thus, the longitudinal scraper frame 18 moves up and down through the first lower connecting plate 17.

[0030] Preferably, the longitudinal displacement drive mechanism 7 includes a mounting plate 23, two roller brackets 29, and two drive rods 26. The two drive rods 26 are respectively fixedly connected to their corresponding longitudinal moving frames 10 through a connecting rod 27. The mounting plate 23 and the roller brackets 29 are both fixedly connected to the longitudinal beam 6. Rollers 22 are rotatably connected to the two roller brackets 29. The two rollers 22 are respectively supported on the lower side of the two drive rods 26. Longitudinal racks 25 are fixedly connected to the opposite side of the two drive rods 26. A longitudinal drive motor 24 is mounted on the mounting plate 23. A longitudinal gear that meshes with the two longitudinal racks 25 is connected to the longitudinal drive motor 24. When the longitudinal drive motor 24 is activated, it drives the longitudinal gear to rotate, thereby driving the two longitudinal racks 25 to move relative to or in opposite directions. This drives the two drive rods 26 to move under the support of the two rollers 22, and then drives the two longitudinal moving frames 10 to move relative to or in opposite directions through the two connecting rods 27.

[0031] Preferably, the longitudinal linear guide assembly 9 includes a set of longitudinal linear guide rails 30 fixedly connected to the longitudinal beam 6, and each longitudinal linear guide rail 30 is slidably connected to a longitudinal slider 28. Each longitudinal slider 28 is fixedly connected to the longitudinal moving frame 10. Through the cooperation of the longitudinal linear guide rails 30 and the longitudinal sliders 28, the longitudinal moving frame 10 can achieve directional movement relative to the longitudinal beam 6.

[0032] Preferably, the lateral displacement drive mechanism 11 includes a lateral rack 50 fixedly connected to the crossbeam 8 and a lateral drive motor 35 mounted on the lateral moving frame 12. The lateral drive motor 35 is connected to a lateral gear 37 that meshes with the lateral rack 50. When the lateral drive motor 35 moves, it drives the lateral gear 37 to rotate, thereby driving the lateral drive motor 35 to move with the lateral moving frame 12 while the lateral rack 50 remains stationary.

[0033] Preferably, the transverse linear guide assembly includes a set of transverse linear guide rails 51 fixedly connected to the crossbeam 8, and a transverse slider 40 is slidably connected to each transverse linear guide rail 51. Each transverse slider 40 is fixedly connected to the transverse moving frame 12. Under the cooperative action of the transverse linear guide rails 51 and the transverse sliders 40, the transverse moving frame 12 can move in a directional manner relative to the crossbeam 8.

[0034] Preferably, a first vibration motor 19 is installed on the longitudinal scraper frame 18, and the longitudinal scraper 20 is fixedly connected to the first vibration motor 19. A second vibration motor 44 is installed on the transverse scraper frame 43, and the transverse scraper 45 is fixedly connected to the second vibration motor 44. By the operation of the first vibration motor 19 and the second vibration motor 44, the surface of the concrete guardrail 4 can be vibrated while the longitudinal scraper 20 and the transverse scraper 45 are working, thereby expelling air bubbles from the surface of the concrete guardrail 4 and further improving the surface quality of the concrete guardrail 4.

[0035] Preferably, the second lifting drive assembly includes a second lifting cylinder 33 fixedly installed on the transverse moving frame 12 and a set of second guide sleeves 32. Each second guide sleeve 32 is connected to a second guide shaft 31. The upper ends of each second guide shaft 31 are connected to a second upper connecting plate 34, and the lower ends of each second guide shaft 31 are connected to a second lower connecting plate 36. The piston rod of the second lifting cylinder 33 is fixedly connected to the second upper connecting plate 34. The transverse scraper frame 43 is fixedly connected to the second lower connecting plate 36. When the second lifting cylinder 33 is activated, its piston rod extends and retracts, which drives the second upper connecting plate 34 to move up and down. Under the action of the second guide sleeves 32, the second guide shafts 31 move up and down, thereby driving the transverse scraper frame 43 to move up and down through the second lower connecting plate 36.

[0036] Preferably, both ends of the crossbeam 8 are fixedly connected to a third guide sleeve 38, and a third guide shaft 39 is slidably connected inside each third guide sleeve 38. A lifting rod 49 located at the top of the second upper connecting plate 34 is connected between the upper ends of each third guide shaft 39. A lifting frame 46 is fixedly connected between the lower ends of each third guide shaft 39. A set of support legs 47 is provided on the lifting frame 46, and an adjusting screw 48 is threaded onto each support leg 47. A roller frame 41 is fixedly connected to the second lower connecting plate 36, and a roller 42 adapted to the lifting frame 46 is rotatably connected to the roller frame 41. The second lifting cylinder 33 is activated, and its piston rod extends and retracts, driving the lifting mechanism. The frame 46 moves up and down with the transverse scraper 45. When the transverse scraper 45 descends to fit against the surface of the concrete guardrail 4, the adjusting screws 48 press against the mold car 3. During assembly and debugging, the tilt of the lifting frame 46 can be adjusted by rotating the adjusting screws 48. This, in turn, adjusts the tilt of the second lower connecting plate 36 under the action of the rollers 42 and roller frame 41. The tilt of the transverse scraper 45 is then adjusted by the transverse scraper frame 43, ensuring that the transverse scraper 45 fits better against the surface of the concrete guardrail 4. At the same time, when the transverse scraper 45 is in operation, the rollers 42 can roll along the lifting frame 46, thus not affecting the normal operation of the transverse scraper 45.

Claims

1. An automatic leveling device for pouring precast concrete guardrails, characterized in that: The system includes two gantry frames (1), with a longitudinal beam (6) fixedly connected between the upper ends of the two gantry frames (1). A longitudinal displacement drive mechanism (7) is installed on the longitudinal beam (6), and two longitudinal linear guide assemblies (9) are installed on the longitudinal beam (6). A longitudinal moving frame (10) is fixedly connected to the longitudinal slider (28) of each of the two longitudinal linear guide assemblies (9). A longitudinal smoothing mechanism (5) is installed on each of the two longitudinal moving frames (10). The longitudinal smoothing mechanism (5) includes a first lifting drive assembly installed on the longitudinal moving frame (10). A longitudinal scraper frame (18) is connected to the first lower connecting plate (17) of the first lifting drive assembly. A longitudinal scraper (20) is connected to the lower part of the longitudinal scraper frame (18). The longitudinal displacement drive mechanism (7) is also included. The two longitudinal moving frames (10) are used to drive the two longitudinal moving frames (10) to reciprocate in the longitudinal direction. A crossbeam (8) is fixedly connected to the lower part of the longitudinal beam (6). A transverse displacement driving mechanism (11) and a transverse linear guide assembly are installed on the crossbeam (8). A transverse moving frame (12) is fixedly connected to the transverse slider (40) of the transverse linear guide assembly. A transverse smoothing mechanism (13) is installed on the transverse moving frame (12). A second lifting driving assembly is installed on the transverse smoothing mechanism (13). A transverse scraper frame (43) is connected to the second lower connecting plate (36) of the second lifting driving assembly. A transverse scraper (45) is connected to the lower part of the transverse scraper frame (43). The transverse displacement driving mechanism (11) is used to drive the transverse moving frame (12) to reciprocate in the transverse direction.

2. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The first lifting drive assembly includes a first lifting cylinder (21) mounted on a longitudinal moving frame (10). The longitudinal moving frame (10) is provided with a set of guide holes (16). Each guide hole (16) is slidably connected to a first guide shaft (14). A first upper connecting plate (15) is connected between the upper ends of each first guide shaft (14). A first lower connecting plate (17) is connected between the lower ends of each first guide shaft (14). The piston rod of the first lifting cylinder (21) is fixedly connected to the first upper connecting plate (15). The longitudinal scraper frame (18) is fixedly connected to the first lower connecting plate (17).

3. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The longitudinal displacement drive mechanism (7) includes a mounting plate (23), two roller brackets (29) and two drive rods (26). The two drive rods (26) are fixedly connected to their corresponding longitudinal moving frame (10) through a connecting rod (27). The mounting plate (23) and the roller brackets (29) are both fixedly connected to the longitudinal beam (6). The two roller brackets (29) are rotatably connected to rollers (22). The two rollers (22) are respectively supported on the lower side of the two drive rods (26). The opposite side of the two drive rods (26) is fixedly connected to a longitudinal rack (25). The mounting plate (23) is equipped with a longitudinal drive motor (24). The longitudinal drive motor (24) is connected to a longitudinal gear that meshes with the two longitudinal racks (25).

4. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The longitudinal linear guide assembly (9) includes a set of longitudinal linear guide rails (30) fixedly connected to the longitudinal beam (6), and each longitudinal linear guide rail (30) is slidably connected to a longitudinal slider (28), and each longitudinal slider (28) is fixedly connected to the longitudinal moving frame (10).

5. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The lateral displacement drive mechanism (11) includes a lateral rack (50) fixedly connected to the crossbeam (8) and a lateral drive motor (35) mounted on the lateral moving frame (12). The lateral drive motor (35) is connected to a lateral gear (37) that meshes with the lateral rack (50).

6. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The transverse linear guide assembly includes a set of transverse linear guide rails (51) fixedly connected to the crossbeam (8), and each transverse linear guide rail (51) is slidably connected to a transverse slider (40), and each transverse slider (40) is fixedly connected to the transverse moving frame (12).

7. The automatic leveling device for precast concrete guardrail pouring according to claim 1, characterized in that: The longitudinal scraper frame (18) is equipped with a first vibration motor (19), and the longitudinal scraper (20) is fixedly connected to the first vibration motor (19). The transverse scraper frame (43) is equipped with a second vibration motor (44), and the transverse scraper (45) is fixedly connected to the second vibration motor (44).

8. The automatic leveling device for precast concrete guardrail pouring according to any one of claims 1 to 7, characterized in that: The second lifting drive assembly includes a second lifting cylinder (33) fixedly installed on the transverse moving frame (12) and a set of second guide sleeves (32). Each second guide sleeve (32) is connected to a second guide shaft (31). The upper ends of each second guide shaft (31) are connected to a second upper connecting plate (34), and the lower ends of each second guide shaft (31) are connected to a second lower connecting plate (36). The piston rod of the second lifting cylinder (33) is fixedly connected to the second upper connecting plate (34), and the transverse scraper frame (43) is fixedly connected to the second lower connecting plate (36).

9. The automatic leveling device for precast concrete guardrail pouring according to claim 8, characterized in that: Both ends of the beam (8) are fixedly connected to a third guide sleeve (38), and a third guide shaft (39) is slidably connected inside each third guide sleeve (38). The upper ends of each third guide shaft (39) are connected to a lifting rod (49) located at the top of the second upper connecting plate (34). The lower ends of each third guide shaft (39) are fixedly connected to a lifting frame (46). A set of support legs (47) is provided on the lifting frame (46). Each support leg (47) is threadedly connected to an adjusting screw (48). A roller frame (41) is fixedly connected to the second lower connecting plate (36). A roller (42) adapted to the lifting frame (46) is rotatably connected to the roller frame (41).

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