Automatic plastering device and process for shield segment automatic flow production line

Abstract

The invention discloses an automatic plastering device and process for an automatic flow production line of shield segments, and relates to the technical field of shield segment production. The automatic plastering device comprises a portal frame, a lifting arm arranged on the portal frame in a sliding mode, a connecting plate fixedly connected to the end of the lifting arm, a base arranged under the portal frame and a mold movably clamped to the base; the auxiliary arms are fixedly connected to the inner walls of the two sides of the portal frame, and the bottom of the connecting plate is provided with a rough plastering and filling-in structure which is used for filling redundant cement into a concave area based on an arc-shaped curved surface of a fitting mold; the spraying structure is arranged at the bottom of the connecting plate and used for assisting the coarse plastering and filling-in structure, and the fine plastering assembly is arranged at the bottom of the connecting plate and used for performing fine plastering on the cement surface subjected to coarse plastering. And uneven plastering is easily caused due to inaccurate fitting of the spatula and the arc-shaped curved surface.

Description

Technical Field

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

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

[0003] For example, although 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, 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 transportation time of the segments. 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, poor plastering uniformity will result.

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

[0005] The technical solution of the present invention aims at 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 assembly line of shield segments, so as to solve the problem proposed in the above background technology that 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 of the assembly line, increasing the transportation time of the segments. Secondly, when a rigid scraper is used to scrape off the 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 be in contact with the curved surface of the segment at all times. If the trowel is detached, the problem of poor plastering uniformity will result.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic plastering device for an automated production line of shield segments, comprising a gantry, a lifting arm slidably 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 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 assembly arranged at the bottom of the connecting plate for fine plastering the cement surface after rough plastering, and the end of the auxiliary arm is fixedly connected to a limiting guide rail.

[0007] Preferably, the rough-smoothing and leveling structure includes moving rollers which are symmetrically distributed and fit the arc-shaped surface of the mold, an axle rod arranged at the center of the moving rollers, a mounting seat which is 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 arranged 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, a fixing rod is fixedly connected to the bottom of the connecting plate, and placement seats distributed in an array are fixedly connected to the shaft rod, one of the placement seats is provided with a first rotating shaft, a rotating rod is sleeved on the first rotating shaft, trigger rods are fixedly connected to the tops of both ends of the rotating rod, and movable grooves and sliding grooves are respectively provided on the rotating rods, the end of the first hydraulic rod is arranged in the movable groove, and the end of the second hydraulic rod is fixedly connected to a driving rod, and the top and bottom of the driving rod are respectively slidably arranged in the sliding groove.

[0009] Preferably, the end of the first hydraulic rod is fixedly connected to a rough scraper, and the center of the rough scraper is flexibly connected to a soft plate, a connecting rod is arranged 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 arranged 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: S1, rough smearing stage: when the base transports the mold to the gantry and is located below the connecting plate, the lifting arm descends and makes the moving roller contact 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 roughly smeared; S2, spraying and leveling stage: when the roughing work in step S1 is in progress, the residual material scraped off 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 start the trigger, so that the trigger opens the control valve, and then the sprinkler 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 roughly plastered, the fine plastering scraper arranged at the bottom of the connecting plate contacts the cement surface after the rough plastering, and then synchronously follows the movement of the lifting arm, so that the cement surface after the rough plastering is finely plastered, thereby improving the efficiency of the fine plastering work.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 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 roughs the cement in the mold to initially smooth the cement surface. While the roughing work is in progress, the roughing scraper with too much 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 hydraulic oil pump through the oil pipe. The second hydraulic rod connected thereto is used to push the rotating rod to rotate, and the rough smearing scraper with too much cement accumulation is tilted toward the rough smearing scraper with too little cement accumulation, so as to detect the levelness of the cement surface and reveal the concave area of ​​the cement surface. The soft plate flexibly connected between the rough smearing scrapers can make the rough smearing scrapers become diversion ramps after the rough smearing scrapers are tilted, so that cement flows from the rough smearing scraper with too much cement accumulation to the rough smearing scraper with too little cement accumulation and is supplemented to the concave area of ​​the cement surface, so as to level the cement surface; 2. When the mold enters the leveling area in the gantry, the cement inside the mold will be in a certain degree of solidification state. When the rotating rod rotates, the trigger rod connected to its end contacts the trigger, so that the trigger opens the control valve, allowing water to flow into the nozzle through the water pipe and start spraying water to the top of the rough scraper. The water flows slowly to the cement according to the inclination angle of the rough scraper, thereby softening the semi-solidified cement on the rough scraper, and then assisting the softened cement to flow into the concave area. The excess water can also maintain the cement in the mold, prevent cracking of the cement surface, ensure the strength of the cement coagulation in the mold, and promote the continuous hydration reaction of the cement, so as to prepare for the subsequent fine plastering work; 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 the 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 the roughing, thereby improving the efficiency of the fine-spatching work.

[0015] The present invention solves the problems of increased transportation time due to segmented operations of rough smearing and fine smearing, uneven surface caused by inability of rigid scrapers to fill depressions, and uneven smearing caused by inaccurate fit between the trowel and the curved surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the plastering device of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the plastering device of the present invention from another angle.

[0018] Figure 3 It is a schematic diagram of the plastering structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the plastering structure of the present invention from another angle.

[0020] Figure 5 It is a schematic diagram of the spray structure and fine-wiping components of the present invention.

[0021] Figure 6 It is a schematic diagram from another angle of the spray structure and fine-wiping assembly of the present invention.

[0022] Figure 7 It is a schematic diagram of the rough smearing and leveling structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the rough-smoothing and leveling structure of the present invention from another angle.

[0024] Fig. 9 This is a diagram showing the cement leveling state of the rough-smeared and leveled structure of the present invention.

[0025] Fig.10 for Figure 4 A magnified view of the structure at A.

[0026] In the figure: 1, gantry; 101, lifting arm; 2, connecting plate; 201, connecting rod; 3, base; 4, mold; 5, auxiliary arm; 6, limit 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, driving rod; 22, rotating rod; 23, trigger rod; 24, soft board; 25, first rotating shaft; 26, oil pipeline; 27, second rotating shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0028] 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 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, and also 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 a recessed area at the bottom of the connecting plate 2, 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 fine plastering the cement surface after rough plastering, and the end of the auxiliary arm 5 is fixedly connected to a limiting guide rail 6.

[0029] As the present 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 descends, and 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, and 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 moves to the other end of the mold 4, and while moving, the rough-smearing and leveling structure performs rough-smearing work on the cement surface of the mold 4, and while the rough-smearing work is in progress, the cement stands on the rough-smearing On the leveling structure, the rough-smoothing 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 leveling structure to soften the cement adhered to the rough-smoothing leveling structure and flows to the recessed area of ​​the cement surface through the inclined rough-smoothing leveling structure, thereby performing the leveling work. While the rough-smoothing work is being carried out, 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.

[0030] The rough-smoothing and leveling structure includes moving rollers 9 which are symmetrically distributed and fit the arc-shaped surface of the mold 4, an axle rod 901 arranged at the center of the moving rollers 9, a mounting seat which 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 pipeline 26 is fixedly connected between the first hydraulic rod 20 and the second hydraulic rod 21.

[0031] A fixing 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, a rotating rod 22 is sleeved on the first rotating shaft 25, and a trigger rod 23 is fixedly connected to the top of both ends of the rotating rod 22. A movable groove and a sliding groove are respectively provided on the rotating rod 22, and the end of the first hydraulic rod 20 is arranged 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 arranged in the sliding groove.

[0032] The end of the first hydraulic rod 20 is fixedly connected to a rough scraper 16, and the center of the rough scraper 16 is flexibly connected to a 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 a connecting block 14, and the end of the connecting block 14 is fixedly connected to a sliding rod 15, and the sliding rod 15 is slidably arranged in the limiting guide rail 6.

[0033] 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 sliding rod 15 through the connecting block 14 to ensure that the rough plastering scraper 16 always moves smoothly along the limiting guide rail 6. The first hydraulic rod 20 is directly connected to the rough plastering scraper 16 to sense the cement accumulation resistance in real time. There are two rough plastering 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 allows 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.

[0034] The spray 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 spray head 19 controlled by the control valve 18 to open and close. 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.

[0035] As this embodiment, the spray 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 of the control valve 18. 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 depression, but also form a curing water film on the cement surface.

[0036] 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.

[0037] 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.

[0038] A water outlet is arranged at the bottom of the mold 4, a water collecting tank is provided in the base 3, and the notch of the water collecting tank is provided with flow guide baffles distributed in an array.

[0039] As this embodiment, a special water outlet is set at the bottom of the mold 4, which forms a complete wastewater collection channel with the water collecting tank designed in the base 3. An array of guide baffles are set at the groove of the water collecting 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 collecting tank for centralized recovery.

[0040] A method for controlling a protective cover for a motor comprises the following steps: 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 makes the moving roller 9 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, and then the lifting arm 101 slides to the other end of the gantry 1. The roughing scraper 16 is driven by the moving roller 9 and the sliding rod 15 to fit the mold 4 and slide to the other end of the mold 4, so that the cement in the mold 4 is roughly applied; S2, spraying and leveling stage: when the roughing work in step S1 is in progress, the residual material scraped off 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 start the trigger 1801, so that the trigger 1801 opens the control valve 18, and then the spray head 19 sprays water to wet the cement accumulated on the scraper, so that it flows to fill the concave area, thereby achieving the leveling of the concave area; S3, fine plastering stage: while the cement surface is being roughly plastered, the fine plastering scraper 12 arranged 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, so that the cement surface after rough plastering is finely plastered, thereby improving the efficiency of the fine plastering work.

[0041] Working principle: When using the automatic plastering device for the shield segment automated production line, 1. Inspection and leveling stage: After the cement pouring is completed, the mold 4 is moved to the bottom of the gantry 1 through the base 3, and the lifting arm 101 is started and descended, so that the moving roller 9 contacts the arc 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 roughing scraper 16 fits the arc 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 roughing scraper 16 rough-smears the cement in the mold 4, removes excess cement and preliminarily levels the surface. While the roughing work is in progress, when the cement accumulated on the roughing scraper 16 reaches a certain level, the roughing scraper 16 with too much cement accumulation will push the first hydraulic rod 20 connected to it to contract due to the excessive cement accumulation and resistance. The first hydraulic rod 20 contracts At the same time, the hydraulic oil inside the second hydraulic rod 21 is transmitted to the second hydraulic rod 21 connected thereto through the oil pipe 26, so that the second hydraulic rod 21 extends out 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 levelness 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, and 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 is replenished to the concave area of ​​the cement surface, thereby leveling the cement surface. 2. Automatic water spraying stage: First of all, it should be made clear that when the mold 4 enters the leveling area in 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 toward the rough scraper 16. When the water flows to 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-cured cement on the rough trowel 16, and then assisting the softened cement to flow to the concave area. The excess water can also maintain the cement in the mold 4, prevent the cement surface from cracking, ensure the strength of the cement coagulation in the mold 4, and promote the continuous hydration reaction of the cement, so as to prepare for the subsequent fine trowel work; While the roughing and spraying work is in progress, the fine-smearing scraper 12 arranged 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 work on the cement surface. The fine-smearing scraper 12 is firmly installed in the lower joint plate 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 maintained by water, the fine-smearing scraper 12 can better perform fine-smearing on the cement surface and perform more refined smoothing on the cement surface after the leveling; Finally, the water outlet at the bottom of the mold 4 is connected to the water collection tank in the base 3 to form a complete wastewater collection channel. The guide baffles set at the notch of the water collection tank can guide the direction of water flow and prevent wastewater from splashing. During the working process, the excess curing water and cement slurry are discharged through the water outlet at the bottom of the mold 4, and enter the water collection tank for centralized recovery after orderly diversion by the guide baffles.

[0042] 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 protection scope of the present invention.

Claims

1. An automatic plastering device for an automated production line of shield segments, comprising a gantry (1), a lifting arm (101) slidably disposed on the gantry (1), a connecting plate (2) fixedly connected to the end of the lifting arm (101), a base (3) disposed directly below the gantry (1), and a mold (4) movably connected to the base (3), characterized in that: It also includes an auxiliary arm (5) fixedly connected to the inner walls on both sides of the gantry (1), a rough smearing and leveling structure based on the arc surface of the fitting mold (4) is arranged at the bottom of the connecting plate (2) for filling the excess cement into the concave area, a spraying structure arranged at the bottom of the connecting plate (2) for assisting the rough smearing and leveling structure, and a fine smearing assembly arranged at the bottom of the connecting plate (2) for fine smearing the cement surface after rough smearing, and the end of the auxiliary arm (5) is fixedly connected to the limiting guide rail (6).

2. The automatic facing device for the automatic production line of shield segments according to claim 1 is characterized by: The rough-smoothing and leveling structure comprises moving rollers (9) which are symmetrically distributed and fit the arc-shaped surface of the mold (4), a shaft (901) arranged at the center of the moving rollers (9), a mounting seat which is sleeved on the shaft (901) and arranged 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) being arranged at the connection between the second hydraulic rod (21) and the mounting seat, and an oil delivery pipe (26) being fixedly connected between the first hydraulic rod (20) and the second hydraulic rod (21).

3. The automatic facing device for the automatic production line of shield segments according to claim 2 is characterized by: 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 a trigger rod (23) is fixedly connected to the top of both ends of the rotating rod (22), and a movable groove and a sliding groove are respectively provided on the rotating rod (22), the end of the first hydraulic rod (20) is arranged in the movable groove, and the end of the second hydraulic rod (21) is fixedly connected to a driving rod (2101), and the top and bottom of the driving rod (2101) are respectively slidably arranged in the sliding groove.

4. The automatic facing device for the automatic production line of shield segments according to claim 3 is characterized by: The end of the first hydraulic rod (20) is fixedly connected to a rough scraper (16), and the center of the rough scraper (16) is flexibly connected to a 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 a connecting block (14). The end of the connecting block (14) is fixedly connected to a sliding rod (15), and the sliding rod (15) is slidably arranged in the limiting guide rail (6).

5. The automatic facing device for the automatic production line of shield segments according to claim 4 is characterized by: 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) whose opening and closing is controlled by the control valve (18); a connecting rod (201) is sleeved on the outer wall of the control valve (18), the connecting rod (201) is connected to the bottom of the connecting plate (2), and a trigger (1801) is arranged on one side of the control valve (18), and the trigger (1801) is in contact with the trigger rod (23).

6. The automatic facing device for the automatic production line of shield segments according to claim 1 is characterized by: 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) penetrate 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).

7. The automatic plastering device for the automatic production line of shield segments according to claim 1 is characterized by: The bottom of the mold (4) is provided with a water outlet, the base (3) is provided with a water collecting trough, and the notch of the water collecting trough is provided with flow guide baffles distributed in an array.

8. A method for controlling a motor protective cover, applicable to the motor protective cover according to claim 5, characterized in that: The control method comprises the following steps: 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) is driven by the moving roller (9) and the slide rod (16) to fit the mold (4) and slide toward the other end of the mold (4), so that the cement in the mold (4) is roughed; S2, spraying and leveling stage: when the roughing work in step S1 is in progress, the residual material scraped off 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 spray head (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 roughly plastered, the fine plastering scraper (12) arranged at the bottom of the connecting plate (2) contacts the cement surface after the rough plastering, and then synchronously follows the movement of the lifting arm (101), so that the cement surface after the rough plastering is finely plastered, thereby improving the efficiency of the fine plastering work.

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