An automatic finishing device and process for shield segment automated production line

Abstract

The present invention discloses an automatic plastering device and process for an automated production line of shield segments, relating to the technical field of shield segment production, comprising a gantry, a lifting arm slidingly arranged on the gantry, a connecting plate fixedly connected to the end of the lifting arm, a base arranged directly below the gantry, and a mold movably clamped on the base, and further comprising an auxiliary arm fixedly connected to the inner walls on both sides of the gantry, a rough plastering and leveling structure based on a fitting mold arc surface for filling excess cement into a recessed area at the bottom of the connecting plate, a spraying structure arranged at the bottom of the connecting plate for assisting the rough plastering and leveling structure, and a fine plastering component arranged at the bottom of the connecting plate for fine plastering the cement surface after rough plastering. Through the present invention, the problems of increased transportation time due to segmented operations of rough plastering and fine plastering, uneven surface caused by the inability of the rigid scraper to fill the recess, and uneven plastering caused by inaccurate fitting of the trowel and the arc surface are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield segment production, in particular to an automatic finishing device and process for an automated production line of shield segments. Background Art

[0002] The automatic finishing device used in the shield segment automated production line is used to smooth, compact and polish the outer arc surface (or inner arc surface) of the segment to ensure the segment's dimensional accuracy, surface flatness and waterproof performance.

[0003] For example, an automatic plastering device for concrete shield segments with publication number CN114633343A can be used to automatically plaster the surface of concrete shield segments, reduce the labor intensity of workers, and improve the production efficiency of concrete shield segments. However, the plastering work of traditional shield segments needs to be divided into two stages: rough plastering and fine plastering, which are completed at different workstations on the assembly line, increasing the segment transportation time. Secondly, when a rigid scraper is used to scrape off excess material in the rough plastering stage, only the cement on the protruding part can be removed, and the excess cement cannot be filled into the recessed area, resulting in local unevenness on the surface. If the flatness is poor after rough plastering, greater pressure compensation is required in the fine plastering stage, which affects the life of the trowel and may damage the concrete structure. In addition, the curved surface of the segment may have slight deformation after pouring, and the trowel needs to always fit the curved surface of the segment. If the trowel is detached, the plastering uniformity will be poor.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the automatic surfacing device used in the original shield segment automated production line. Summary of the Invention

[0005] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide an automatic plastering device and process for an automated production line of shield segments, so as to solve the above-mentioned background technology that the traditional plastering work of shield segments needs to be divided into two stages: rough plastering and fine plastering, which are completed at different workstations of the assembly line, increasing the segment transportation time. Secondly, when a rigid scraper is used to scrape off the excess material in the rough plastering stage, only the cement in the protruding part can be removed, and the excess cement cannot be filled into the recessed area, resulting in local unevenness on the surface. If the flatness is poor after rough plastering, greater pressure compensation is required in the fine plastering stage, which affects the life of the trowel and may damage the concrete structure. In addition, the curved surface of the segment may have slight deformation after pouring, and the trowel needs to always fit the curved surface of the segment. If the trowel is detached, it will lead to poor plastering uniformity.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic finishing device for an automated production line of shield segments, comprising a gantry, a lifting arm slidingly arranged on the gantry, a connecting plate fixedly connected to the end of the lifting arm, a base arranged directly below the gantry, and a mold movably connected to the base, and also comprising an auxiliary arm fixedly connected to the inner walls on both sides of the gantry, a rough finishing and leveling structure based on a fitting mold arc surface for filling excess cement into the recessed area at the bottom of the connecting plate, a spraying structure arranged at the bottom of the connecting plate for assisting the rough finishing and leveling structure, and a fine finishing assembly arranged at the bottom of the connecting plate for fine finishing the cement surface after rough finishing, and the end of the auxiliary arm is fixedly connected to a limiting guide rail.

[0007] Preferably, the rough-smoothing and leveling structure includes movable rollers that are symmetrically distributed and fit the arc-shaped surface of the mold, an axle rod arranged at the center of the movable roller, a mounting seat sleeved on the axle rod and distributed in an array, and a first hydraulic rod and a second hydraulic rod arranged on the mounting seat, a second rotating shaft is provided at the connection between the second hydraulic rod and the mounting seat, and an oil pipeline is fixedly connected between the first hydraulic rod and the second hydraulic rod.

[0008] Preferably, the bottom of the connecting plate is fixedly connected to a fixed rod, and the shaft rod is fixedly connected to a placement seat distributed in an array, one of the placement seats is provided with a first rotating shaft, and a rotating rod is sleeved on the first rotating shaft, and a trigger rod is fixedly connected to the top of both ends of the rotating rod, and a movable groove and a sliding groove are respectively provided on the rotating rod, the end of the first hydraulic rod is set in the movable groove, and the end of the second hydraulic rod is fixedly connected to the driving rod, and the top and bottom of the driving rod are respectively slidably set in the sliding groove.

[0009] Preferably, the end of the first hydraulic rod is fixedly connected to a rough scraper, the center of the rough scraper is flexibly connected to a soft plate, a connecting rod is provided through the mounting seat, the end of the connecting rod is fixedly connected to a connecting block, the end of the connecting block is fixedly connected to a sliding rod, and the sliding rod is slidably provided in a limiting guide rail.

[0010] Preferably, the shower structure includes a water tank arranged on the top of the connecting plate, a water pipe connected to both ends of the water tank, a control valve connected to the end of the water pipe, and a nozzle whose opening and closing is controlled by the control valve. The outer wall of the control valve is provided with a connecting rod, and the connecting rod is connected to the bottom of the connecting plate. A trigger is provided on one side of the control valve, and the trigger is in contact with the trigger rod.

[0011] Preferably, the fine smearing assembly includes a support rod fixedly connected to the bottom of the connecting plate, an upper closing plate fixedly connected to the end of the support rod, a lower closing plate hinged to the upper closing plate, and a fine smearing scraper movably connected to the lower closing plate for fine smearing cement, and the lower closing plate is provided with fixing bolts distributed in an array, and the ends of the fixing bolts pass through the lower closing plate and the fine smearing scraper to fix the fine smearing scraper in the lower closing plate.

[0012] Preferably, a water outlet is provided at the bottom of the mold, a water collecting trough is provided in the base, and the notch of the water collecting trough is provided with flow guide baffles distributed in an array.

[0013] 8. A method for controlling a protective cover for a motor, comprising the following steps:

[0014] S1, rough smearing stage: When the base transports the mold into the gantry and is located under the connecting plate, the lifting arm descends and the moving roller contacts the curved surface of the mold. At the same time, the limit guide rails are placed on both sides of the mold, and then the lifting arm slides to the other end of the gantry. The rough smearing scraper is driven by the moving roller and the sliding rod to fit the mold and slide to the other end of the mold, so that the cement in the mold is rough-smeared;

[0015] S2, spraying and leveling stage: When the roughing work in step S1 is in progress, the residual material scraped by the roughing scraper accumulates and pushes the first hydraulic rod to retract. The hydraulic oil drives the second hydraulic rod to tilt the rotating rod and drives the trigger rod to activate the trigger, so that the trigger opens the control valve. Then the nozzle sprays water to wet the cement accumulated on the scraper, causing it to flow and fill the concave area, thereby leveling the concave area;

[0016] S3, fine plastering stage: while the cement surface is being rough-plastered, the fine-plastering scraper arranged at the bottom of the connecting plate contacts the cement surface after rough-plastering, and then synchronously follows the movement of the lifting arm, thereby fine-plastering the cement surface after rough-plastering, thereby improving the efficiency of fine-plastering work.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the moving roller contacts the curved surface of the mold, the limit guide rails are located on both sides of the mold, and the lifting arm slides toward one end of the gantry, so that the roughing scraper fits the curved surface of the mold and slides toward one end of the mold. During this process, the roughing scraper rough-smears the cement in the mold to preliminarily smooth the cement surface. While the roughing work is in progress, the roughing scraper with excessive cement accumulation will generate resistance due to the excessive cement accumulation, pushing the first hydraulic rod connected to it to contract. When the first hydraulic rod contracts, the hydraulic oil inside it is transmitted to the The second hydraulic rod connected thereto drives the rotating rod to rotate and tilts the rough trowel blade where cement is over-accumulated toward the rough trowel blade where cement is under-accumulated, thereby detecting the levelness of the cement surface and revealing the concave areas on the cement surface. The soft plate flexibly connected between the rough trowel blades can transform the rough trowel blades into diversion ramps after the rough trowel blades are tilted, thereby causing cement to flow from the rough trowel blade where cement is over-accumulated toward the rough trowel blade where cement is under-accumulated and replenish the concave areas on the cement surface, thereby leveling the cement surface.

[0019] 2. When the mold enters the leveling area in the gantry, the cement inside the mold will be in a certain degree of solidification. When the rotating rod rotates, the trigger rod connected to its end contacts the trigger, which opens the control valve, allowing water to flow into the nozzle through the water pipe and start spraying water towards the top of the roughing scraper. The water flows slowly towards the cement according to the inclination angle of the roughing scraper, thereby softening the semi-solidified cement on the roughing scraper, and then assisting the softened cement to flow into the recessed area. The excess water can also play a role in curing the cement in the mold, preventing the cement surface from cracking, ensuring the strength of the cement in the mold, and promoting the continuous hydration reaction of the cement, preparing for the subsequent fine screed work;

[0020] 3. While the roughing and spraying work is in progress, the fine-spatching scraper installed at the bottom of the connecting plate contacts the cement surface after roughing. The fine-spatching scraper moves synchronously with the movement of the lifting arm to perform fine-spatching on the cement surface, so that the mold that needs fine-spatching can be quickly connected to the fine-spatching work after roughing, thereby improving the efficiency of the fine-spatching work.

[0021] The present invention solves the problems of increased transportation time due to segmented rough and fine smearing operations, uneven surface caused by the inability of the rigid scraper to fill in depressions, and uneven smearing caused by the inaccurate fit of the trowel and the curved surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the plastering device of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall structure of the wiping device of the present invention from another angle.

[0024] Figure 3 It is a schematic diagram of the plastering structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the plastering structure from another angle of the present invention.

[0026] Figure 5 Schematic diagram of the spray structure and fine-wiping components of the present invention.

[0027] Figure 6 This is a schematic diagram from another angle of the spray structure and fine-wiping component of the present invention.

[0028] Figure 7 It is a schematic diagram of the rough smearing and leveling structure of the present invention.

[0029] Figure 8 This is a schematic diagram from another angle of the rough-smoothing and leveling structure of the present invention.

[0030] Figure 9 This is a diagram showing the state of the rough-smeared and leveled structure cement.

[0031] Figure 10 for Figure 4 A magnified view of the structure at point A.

[0032] In the figure: 1. Gantry; 101. Lifting arm; 2. Connecting plate; 201. Connecting rod; 3. Base; 4. Mold; 5. Auxiliary arm; 6. Limiting guide rail; 7. Water tank; 8. Upper closing plate; 9. Moving roller; 901. Shaft rod; 10. Lower closing plate; 11. Fixing bolt; 12. Fine scraper; 13. Connecting rod; 14. Connecting block; 15. Sliding rod; 16. Rough scraper; 17. Water pipe; 18. Control valve; 1801. Trigger; 19. Nozzle; 20. First hydraulic rod; 21. Second hydraulic rod; 2101. Drive rod; 22. Rotating rod; 23. Trigger rod; 24. Soft board; 25. First rotating shaft; 26. Oil pipeline; 27. Second rotating shaft. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1 to 10The present invention provides a technical solution: an automatic plastering device for an automated production line of shield segments, comprising a gantry 1, a lifting arm 101 slidingly arranged on the gantry 1, a connecting plate 2 fixedly connected to the end of the lifting arm 101, a base 3 arranged directly below the gantry 1, and a mold 4 movably clamped on the base 3, further comprising an auxiliary arm 5 fixedly connected to the inner walls on both sides of the gantry 1, a rough plastering and leveling structure based on the arc surface of the fitting mold 4 for filling excess cement into the concave area, a spraying structure arranged at the bottom of the connecting plate 2 for assisting the rough plastering and leveling structure, and a fine plastering component arranged at the bottom of the connecting plate 2 for finely plastering the cement surface after rough plastering, and the end of the auxiliary arm 5 is fixedly connected to a limiting guide rail 6.

[0035] As this embodiment, after the cement is poured, the mold 4 is moved to the bottom of the gantry 1 through the base 3, and then the lifting arm 101 on the gantry 1 is started and lowered. While descending, the rough-smearing and leveling structure at the end of the lifting arm 101 is made to fit the curved surface of the mold 4. Then the lifting arm 101 moves to one end of the gantry 1, and the rough-smearing and leveling structure is always made to fit the curved surface of the mold 4 through the limiting guide rail 6 and moved to the other end of the mold 4. While moving, the rough-smearing and leveling structure performs rough-smearing work on the cement surface of the mold 4. While the rough-smearing work is being carried out, the cement stands on the rough-smearing surface. On the leveling structure, the rough-smoothing and leveling structure is deformed and tilted due to the resistance of the cement, and then the spraying structure is triggered to start. The spraying structure then sprays water to the rough-smoothing and leveling structure to soften the cement stuck on the rough-smoothing and leveling structure and flows to the recessed area of ​​the cement surface through the tilted rough-smoothing and leveling structure, thereby performing the leveling work. While the rough-smoothing work is in progress, the fine-smoothing component arranged at the bottom of the connecting plate 2 performs fine-smoothing work on the leveled cement surface, so that the mold 4 that needs fine-smoothing can be quickly connected to the fine-smoothing work after the rough-smoothing, thereby improving the efficiency of the fine-smoothing work.

[0036] The rough-smoothing and leveling structure includes moving rollers 9 that are symmetrically distributed and fit the arc-shaped surface of the mold 4, an axle rod 901 arranged at the center of the moving roller 9, a mounting seat that is sleeved on the axle rod 901 and distributed in an array, and a first hydraulic rod 20 and a second hydraulic rod 21 arranged on the mounting seat. A second rotating shaft 27 is provided at the connection between the second hydraulic rod 21 and the mounting seat, and an oil pipe 26 is fixedly connected between the first hydraulic rod 20 and the second hydraulic rod 21.

[0037] A fixed rod is fixedly connected to the bottom of the connecting plate 2, and an array of placement seats are fixedly connected to the shaft rod 901, one of the placement seats is provided with a first rotating shaft 25, and a rotating rod 22 is sleeved on the first rotating shaft 25. The tops of both ends of the rotating rod 22 are fixedly connected with trigger rods 23, and the rotating rod 22 is respectively provided with movable grooves and sliding grooves. The end of the first hydraulic rod 20 is set in the movable groove, and the end of the second hydraulic rod 21 is fixedly connected to the driving rod 2101, and the top and bottom of the driving rod 2101 are respectively slidably set in the sliding groove.

[0038] The end of the first hydraulic rod 20 is fixedly connected to the rough scraper 16, and the center of the rough scraper 16 is flexibly connected to the soft plate 24. A connecting rod 13 is arranged through the mounting seat, and the end of the connecting rod 13 is fixedly connected to the connecting block 14. The end of the connecting block 14 is fixedly connected to the sliding rod 15, and the sliding rod 15 is slidably arranged in the limiting guide rail 6.

[0039] As this embodiment, the symmetrically distributed moving rollers 9 are close to the arc surface of the mold 4, which is used to accurately locate the position of the mold 4 and guide the subsequent plastering operation. Four mounting seats are equidistantly arranged on the shaft 901 to form a stable support frame. The connecting rod 13 is connected to the slide rod 15 through the connecting block 14 to ensure that the rough scraper 16 always moves smoothly along the limit guide rail 6. The first hydraulic rod 20 is directly connected to the rough scraper 16 to sense the cement accumulation resistance in real time. There are two rough scrapers 16, which are softly connected at the center through the soft plate 24. The second hydraulic rod 21 is connected to the second rotating shaft 27. Hinged with the mounting seat, the first hydraulic rod 20 and the second hydraulic rod 21 form a pressure linkage system through the oil pipe 26. When the cement accumulated on the rough scraper 16 reaches a certain amount, the accumulation resistance forces the first hydraulic rod 20 to contract, and the hydraulic oil pushes the second hydraulic rod 21 to extend through the oil pipe 26. The second hydraulic rod 21 drives the rotating rod 22 to rotate around the first rotating shaft 25 through the driving rod 2101. The rotation of the rotating rod 22 causes the rough scraper 16 to form a precise tilt angle through the soft plate 24. The tilted rough scraper 16 forms a diversion ramp, allowing excess cement to flow to the recessed area to complete the leveling.

[0040] The sprinkler structure includes a water tank 7 arranged on the top of the connecting plate 2, a water pipe 17 connected to both ends of the water tank 7, a control valve 18 connected to the end of the water pipe 17, and a nozzle 19 whose opening and closing is controlled by the control valve 18. The outer wall of the control valve 18 is provided with a connecting rod 201, and the connecting rod 201 is connected to the bottom of the connecting plate 2. A trigger 1801 is provided on one side of the control valve 18, and the trigger 1801 is in contact with the trigger rod 23.

[0041] As this embodiment, the spraying structure is mainly composed of a water tank 7, a connecting water pipe 17, a control valve 18 and a nozzle 19 arranged on the top of the connecting plate 2. The water tank 7 is connected to the control valve 18 through the water pipe 17. The control valve 18 is fixed to the bottom of the connecting plate 2 through a connecting rod 201 on the outer wall. A trigger 1801 is provided on one side. When the cement accumulation on the rough scraper 16 reaches a certain level, the trigger rod 23 rotates with the rotating rod 22 and contacts the trigger 1801, thereby opening the control valve 18 and causing the nozzle 19 to spray out a fine stream of water. In addition, the fine stream of water released by the nozzle 19 flows on the upper part of the rough scraper 16, which can not only moisten the semi-dry cement accumulated on the rough scraper 16 to make it easier to flow and fill the depressions, but also form a curing water film on the cement surface.

[0042] The fine-smearing assembly includes a support rod fixedly connected to the bottom of the connecting plate 2, an upper closing plate 8 fixedly connected to the end of the support rod, a lower closing plate 10 hinged to the upper closing plate 8, and a fine-smearing scraper 12 movably connected to the lower closing plate 10 for fine-smearing cement. The lower closing plate 10 is provided with fixing bolts 11 distributed in an array, and the ends of the fixing bolts 11 pass through the lower closing plate 10 and the fine-smearing scraper 12 to fix the fine-smearing scraper 12 in the lower closing plate 10.

[0043] As this embodiment, the support rod is fixedly connected to the bottom of the connecting plate 2, and its end is rigidly connected to the upper closing plate 8. The upper closing plate 8 is connected to the lower closing plate 10 by a hinge, so that the angle of the lower closing plate 10 can be adjusted. The fine scraper 12 is firmly installed in the lower closing plate 10 through the array-distributed fixing bolts 11. The fixing bolts 11 pass through the lower closing plate 10 and form a reliable fixation with the fine scraper 12.

[0044] A water outlet is provided at the bottom of the mold 4, a water collecting trough is provided in the base 3, and the notch of the water collecting trough is provided with flow guide baffles distributed in an array.

[0045] As this embodiment, a dedicated water outlet is opened at the bottom of the mold 4, forming a complete wastewater collection channel with the water collection tank designed in the base 3. An array of guide baffles is set at the groove of the water collection tank. These baffles are evenly distributed and can effectively guide the direction of water flow and prevent wastewater from splashing. During operation, excess curing water and cement slurry are discharged through the water outlet at the bottom of the mold 4, and after orderly diversion by the guide baffles, they enter the water collection tank for centralized recovery.

[0046] A method for controlling a motor protective cover comprises the following steps:

[0047] S1, roughing stage: When the base 3 carries the mold 4 and moves it into the gantry 1 and is located below the connecting plate 2, the lifting arm 101 descends and causes the moving roller 9 to contact the curved surface of the mold 4. At the same time, the limiting guide rails 6 are placed on both sides of the mold 4. Then the lifting arm 101 slides toward the other end of the gantry 1. The roughing scraper 16, driven by the moving roller 9 and the sliding rod 15, fits the mold 4 and slides to the other end of the mold 4, so that the cement in the mold 4 is roughed;

[0048] S2, spraying and leveling stage: When the roughing work in step S1 is in progress, the residual material scraped by the roughing scraper 16 accumulates and pushes the first hydraulic rod 20 to retract. The hydraulic oil drives the second hydraulic rod 21 to tilt the rotating rod 22, and drives the trigger rod 23 to activate the trigger 1801, so that the trigger 1801 opens the control valve 18. Then the spray head 19 sprays water to wet the cement accumulated on the scraper, causing it to flow and fill the concave area, thereby leveling the concave area;

[0049] S3, fine plastering stage: while the cement surface is being rough-plastered, the fine-plastering scraper 12 provided at the bottom of the connecting plate 2 contacts the cement surface after rough-plastering, and then synchronously follows the movement of the lifting arm 101, thereby fine-plastering the cement surface after rough-plastering, thereby improving the efficiency of the fine-plastering work.

[0050] Working principle: When using the automatic plastering device for the shield segment automated production line,

[0051] 1. Inspection and leveling stage: When the mold 4 is poured with cement, it is moved to the bottom of the gantry 1 through the base 3, and the lifting arm 101 is started and lowered, so that the moving roller 9 contacts the curved surface of the mold 4. At the same time, the limit guide rails 6 are placed on both sides of the mold 4, and the lifting arm 101 continues to slide to the other end of the gantry 1. The rough scraper 16 fits the curved surface of the mold 4 under the guidance of the moving roller 9 and the slide bar 15 and slides to the other end of the mold 4. In this process, the rough scraper 16 rough-smears the cement in the mold 4, removes excess cement and preliminarily levels the surface. While the rough-smearing work is in progress, when the cement accumulated on the rough-smearing scraper 16 reaches a certain level, the rough-smearing scraper 16 with excessive cement accumulation will generate resistance due to excessive cement accumulation, pushing the first hydraulic rod 20 connected to it to retract, and the first hydraulic rod 20 retracts At the same time, the hydraulic oil inside it is transmitted to the second hydraulic rod 21 connected to it through the oil pipe 26, so that it extends and pushes the rotating rod 22 to rotate with the first rotating shaft 25 as the axis, and tilts the rough scraper 16 where too much cement is accumulated toward the rough scraper 16 where too little cement is accumulated, thereby detecting the horizontal level of the cement surface and revealing the concave area of ​​the cement surface. A soft plate 24 is flexibly connected between the two rough scrapers 16. The soft plate 24 can be deformed after the two rough scrapers 16 are tilted. Then, the cement placed on the rough scraper 16 forms a diversion ramp through the deformation of the soft plate 24 after the rough scraper 16 is tilted, so that the cement flows from the rough scraper 16 where too much cement is accumulated to the rough scraper 16 where too little cement is accumulated and replenishes the concave area of ​​the cement surface, thereby leveling the cement surface;

[0052] 2. Automatic water spraying stage: First of all, it should be made clear that when the mold 4 enters the smoothing area of ​​the gantry 1, the cement inside the mold 4 will be in a certain degree of solidification state. When the rotating rod 22 rotates, the trigger rod 23 connected to its end contacts the trigger 1801, so that the trigger 1801 opens the control valve 18, so that the water in the water tank 7 flows into the nozzle 19 through the water pipe 17 after the control valve 18 is opened. After the control valve 18 is activated and opened by the trigger 1801, the nozzle 19 starts to spray water towards the rough scraper 16. Water is sprayed on the top of the rough trowel 16. When the water flows into contact with the top of the rough trowel 16, it slowly flows to the cement placed on the rough trowel 16 according to the inclination angle of the rough trowel 16, thereby softening the semi-solidified cement on the rough trowel 16, and then assisting the softened cement to flow into the concave area. The excess water can also play a role in curing the cement in the mold 4, preventing the cement surface from cracking, ensuring the strength of the cement cohesion in the mold 4, and promoting the continuous hydration reaction of the cement, so as to prepare for the subsequent fine trowel work;

[0053] While the roughing and spraying work is in progress, the fine smearing scraper 12 provided at the bottom of the connecting plate 2 contacts the cement surface after the roughing, and the fine smearing scraper 12 moves synchronously with the movement of the lifting arm 101 to perform fine smearing on the cement surface. The fine smearing scraper 12 is firmly installed in the lower panel 10 through the fixing bolt 11 to ensure the stability of the fine smearing work. Then, the fine smearing scraper 12 contacts the cement surface after the roughing, and because the cement surface after the roughing is cured by water, the fine smearing scraper 12 can better perform fine smearing on the cement surface and perform more refined smearing on the cement surface after the leveling;

[0054] Finally, the water outlet at the bottom of mold 4 connects to the sump within base 3, forming a complete wastewater collection channel. Diversion baffles at the sump's notch guide the water flow and prevent wastewater splashing. During operation, excess curing water and cement slurry are discharged through the outlet at the bottom of mold 4, orderly diverted by the diversion baffles, and then collected in the sump for centralized recovery.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic finishing device for an automated production line of shield segments, comprising a gantry (1), a lifting arm (101) slidably arranged on the gantry (1), a connecting plate (2) fixedly connected to the end of the lifting arm (101), a base (3) arranged directly below the gantry (1), and a mold (4) movably connected to the base (3), characterized in that: The invention also includes auxiliary arms (5) fixedly connected to the inner walls of both sides of the gantry (1), a rough smearing and leveling structure based on the arc surface of the mold (4) is provided at the bottom of the connecting plate (2) for filling the excess cement into the concave area, a spraying structure provided at the bottom of the connecting plate (2) for assisting the rough smearing and leveling structure, and a fine smearing assembly provided at the bottom of the connecting plate (2) for fine smearing the cement surface after rough smearing, the end of the auxiliary arm (5) is fixedly connected to the limited position guide rail (6), the rough smearing and leveling structure includes moving rollers (9) that are symmetrically distributed and fit the arc surface of the mold (4), a shaft (901) provided at the center of the moving rollers (9), and a fine smearing assembly sleeved on the shaft. (901) and a mounting seat distributed in an array, and a first hydraulic rod (20) and a second hydraulic rod (21) arranged on the mounting seat, a second rotating shaft (27) is provided at the connection between the second hydraulic rod (21) and the mounting seat, an oil pipeline (26) is fixedly connected between the first hydraulic rod (20) and the second hydraulic rod (21), a fixing rod is fixedly connected to the bottom of the connecting plate (2), and a placement seat distributed in an array is fixedly connected to the shaft rod (901), one of the placement seats is provided with a first rotating shaft (25), a rotating rod (22) is sleeved on the first rotating shaft (25), and the tops of both ends of the rotating rod (22) are fixedly connected There is a trigger rod (23), and the rotating rod (22) is respectively provided with a movable groove and a sliding groove. The end of the first hydraulic rod (20) is set in the movable groove, and the end of the second hydraulic rod (21) is fixedly connected to the driving rod (2101). The top and bottom of the driving rod (2101) are respectively slidably set in the sliding groove. The end of the first hydraulic rod (20) is fixedly connected to the rough scraper (16), and the center of the rough scraper (16) is flexibly connected to the soft plate (24). A connecting rod (13) is provided through the mounting seat, and the end of the connecting rod (13) is fixedly connected to the connecting block (14). The end of the connecting block (14) is fixedly connected to the connecting block (14). The connecting plate (2) is fixedly connected to a slide rod (15), and the slide rod (15) is slidably arranged in a limiting guide rail (6). The spray structure comprises a water tank (7) arranged on the top of the connecting plate (2), a water pipe (17) connected to both ends of the water tank (7), a control valve (18) connected to the end of the water pipe (17), and a spray head (19) controlled to open and close by the control valve (18). The outer wall of the control valve (18) is provided with a connecting rod (201), and the connecting rod (201) is connected to the bottom of the connecting plate (2). A trigger (1801) is provided on one side of the control valve (18), and the trigger (1801) is in contact with the trigger rod (23).

2. The automatic finishing device for an automated production line of shield segments according to claim 1, characterized in that: The fine-smearing assembly comprises a support rod fixedly connected to the bottom of the connecting plate (2), an upper closing plate (8) fixedly connected to the end of the support rod, a lower closing plate (10) hinged to the upper closing plate (8), and a fine-smearing scraper (12) movably engaged in the lower closing plate (10) for fine-smearing cement, wherein the lower closing plate (10) is provided with fixing bolts (11) distributed in an array, and the ends of the fixing bolts (11) pass through the lower closing plate (10) and the fine-smearing scraper (12) so that the fine-smearing scraper (12) is fixed in the lower closing plate (10).

3. The automatic finishing device for an automated shield segment production line according to claim 2, characterized in that: A water outlet is provided at the bottom of the mold (4), a water collecting trough is provided in the base (3), and the notch of the water collecting trough is provided with flow guide baffles distributed in an array.

4. A method for using the automatic plastering device for an automated production line of shield segments according to any one of claims 2-3, characterized in that: The method of use comprises the following steps: S1, rough smearing stage: when the base (3) carries the mold (4) and moves it into the gantry (1) and is located below the connecting plate (2), the lifting arm (101) descends and causes the moving roller (9) to contact the curved surface of the mold (4). At the same time, the limiting guide rails (6) are placed on both sides of the mold (4). Then the lifting arm (101) slides toward the other end of the gantry (1). The rough smearing scraper (16) is driven by the moving roller (9) and the slide bar (15) to fit the mold (4) and slide toward the other end of the mold (4), so that the cement in the mold (4) is rough smeared; S2, spraying and leveling stage: When the roughing work in step S1 is carried out, the residual material scraped by the roughing scraper (16) accumulates and pushes the first hydraulic rod (20) to retract, and the hydraulic oil drives the second hydraulic rod (21) to tilt the rotating rod (22), and drives the trigger rod (23) to start the trigger (1801), so that the trigger (1801) opens the control valve (18), and then the nozzle (19) sprays water to wet the cement accumulated on the scraper, so that it flows to fill the concave area, thereby achieving leveling of the concave area; S3, fine plastering stage: while the cement surface is being rough-smoothed, the fine plastering scraper (12) provided at the bottom of the connecting plate (2) contacts the cement surface after rough-smoothing, and then synchronously follows the movement of the lifting arm (101), thereby fine-smoothing the cement surface after rough-smoothing, thereby improving the efficiency of the fine-smoothing work.

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