A device and method for spreading anti-cracking coating on factory floors

Abstract

This invention provides a device and method for spreading anti-cracking coating on factory floors, belonging to the technical field of paving devices. Its structure includes a mobile vehicle body with a rotating bearing plate on its top surface. A horizontally extending boom body is horizontally mounted on the rotating bearing plate. A support frame and an annular turntable are mounted on the lower end of the horizontally extending boom body. A paving mechanism is vertically mounted on the right rear of the horizontally extending boom body. In contrast to traditional methods, this method first pours a 5cm thick fine aggregate concrete leveling layer on the structural slab, and then applies corundum on the hardened concrete leveling layer. Compared to traditional methods, this method reduces the fine aggregate concrete leveling layer step, saves costs, overcomes common quality problems such as hollow areas, cracks, and sandblasting in the floor, reduces the load on the structural slab, and shortens the construction period.

Description

Technical Field

[0001] This invention relates to a device and method for spreading anti-cracking coating on factory floors, belonging to the technical field of spreading devices. Background Technology

[0002] Emery flooring is a new type of flooring material introduced by foreign companies in the 1990s. It is suitable for the floor decoration needs of industrial sites, docks, parking lots, commercial stores, logistics warehouses, etc. It has the advantages of being pressure-resistant, crack-resistant, dust-reducing, having a hard surface, being easy to clean, economical and durable. The traditional process is to first pour a 5cm thick fine stone concrete leveling layer on the structural slab, and then apply emery on the concrete leveling layer after it has set. In addition, there are quality requirements when spreading emery on the surface of the concrete structural layer. It must be spread evenly and with uniform thickness, and cannot be thrown forcefully. After spreading, it needs to be smoothed in time. In view of the above requirements, this invention proposes a device and method for spreading anti-cracking coating on factory floors. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a device and method for spreading anti-cracking coating on factory floors to solve the existing problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a factory floor anti-cracking coating spreading device, the structure of which includes a mobile vehicle body, a rotating bearing plate provided on the top surface of the mobile vehicle body, a horizontally extending machine arm body provided on the rotating bearing plate, a support frame and an annular turntable abutting the lower end of the horizontally extending machine arm body, a spreading mechanism provided vertically at the right rear of the horizontally extending machine arm body, and a specific gravity component provided on the left side of the horizontally extending machine arm body; The paving mechanism includes a lifting frame assembly, a flow divider plate is fixedly installed in the middle of the lifting frame assembly, a material box is connected to the upper end of the flow divider plate through a corrugated pipe, a solenoid valve is installed on the discharge pipe at the lower end of the material box, a stacking mechanism is installed below the flow divider plate and fixed to the bottom surface of the lifting frame assembly, a paving mesh plate mechanism is installed on the left bottom surface of the stacking mechanism, and a squeegee is vertically arranged on the right side of the stacking mechanism; The stacking mechanism includes an outer frame base. A stacking base plate is horizontally mounted in the middle of the cavity of the outer frame base through multiple fixed seats. A pushing mechanism is flexibly pressed on the top surface of the stacking base plate to push the raw materials to the left for stacking operation. The diversion plate is longitudinally fixed above the right side of the stacking base plate, and the spreading mesh plate mechanism is located below the left side of the stacking base plate.

[0005] A further improvement is that the lifting frame assembly includes a four-legged frame, with a diverter plate crossbeam assembly arranged on the front and rear sides of the middle of the four-legged frame. Two telescopic joints are arranged on the left and right sides of the four-legged frame. The lower ends of the two telescopic joints are horizontally connected to a lifting plate for fixing to the top surface of the outer frame. Multiple support slide rods passing through the four-legged frame are arranged at intervals on the top surface of the lifting plate. A first through-hole for the lower end of the diverter plate to pass through is longitudinally opened on the right side of the lower end of the four-legged frame, and a second through-hole for the lower end of the diverter plate to pass through is longitudinally opened on the right side of the lifting plate.

[0006] A further improvement is that the diversion plate includes a fan-shaped plate, and multiple diversion baffles are spaced apart in the cavity of the fan-shaped plate. Mounting supports for fixing to the diversion plate cross frame assembly are welded to the left and right sides of the upper end of the fan-shaped plate, and multiple push-pull seats are welded to the front and rear sides of the lower end of the fan-shaped plate.

[0007] A further improvement is that a stacking cavity is provided in the middle of the outer frame, a third through-hole is provided on the upper right side of the stacking cavity for the lower end of the diverter plate to pass through, and a stacking passage is provided on the lower left side of the stacking cavity to communicate with the paving mesh mechanism.

[0008] A further improvement is that the stacking bottom plate includes a bottom panel, and the top surface of the bottom panel has multiple stacking channels longitudinally opened. A front discharge port is opened on the front side of every three stacking channels, a middle discharge port is opened in the middle of every three stacking channels, and a rear discharge port is opened on the rear side of every three stacking channels. A guide ramp is provided on the outer edge of the left and right tail stacking channels.

[0009] A further improvement is that the pushing mechanism includes two slide rails, on which servo sliders are mounted. A pushing frame is connected between the two servo sliders. The bottom surface of the pushing frame is provided with multiple channel push blocks for fitting into the stacking channel. The front end of each channel push block is provided with an anti-leakage push head for flexibly resisting the channel wall of the stacking channel to prevent leakage. The anti-leakage push head is made of rubber. The front side of the pushing frame is provided with multiple cleaning triangular heads for pushing the raw materials that are stuck on the edge of two adjacent stacking channels into the stacking channel. The cleaning triangular heads are made of rubber.

[0010] A further improvement is that the paving mesh mechanism includes a mesh frame body, with multiple shock-absorbing seat bodies spaced apart on the frame edge of the mesh frame body, a fitting opening at the upper right side of the mesh frame body, multiple high-frequency vibrator bodies spaced apart on the frame edge of the mesh frame body, a mesh plate body horizontally fitted onto the bottom surface of the mesh frame body, and multiple mesh holes spaced apart on the mesh plate body.

[0011] A further improvement is that the diverter crossbeam assembly includes a crossbeam, and a vertical rail is vertically arranged on the front side of the crossbeam, and a stabilizing drag block connected to the mounting support is fitted on the vertical rail.

[0012] A further improvement is that the main body of the mobile vehicle, the rotating bearing plate, the main body of the horizontal extension arm, the servo slider, the main body of the shock absorber, and the main body of the high-frequency vibrator are all existing technologies, and their structures will not be described in detail here.

[0013] Further improvements include the use of Sika natural-colored abrasive aggregate, uniform abrasive particles, and the absence of large particles. For each unit project, the same batch of abrasive aggregate should be used to avoid color differences due to different batch numbers.

[0014] In addition, the present invention also provides a device and method for spreading anti-cracking coating on factory floors, the method of which is as follows: First, the concrete structural layer on the factory floor is poured. Before the concrete structural layer has set, corundum is spread on the surface of the concrete structural layer. The corundum spreading needs to be repeated twice. The first time, two-thirds of the corundum is used, and the second time, one-third of the corundum is used.

[0015] Then, the main body of the mobile vehicle is moved to the side of the concrete structure layer, and the paving mechanism is turned to be directly above the concrete structure layer by adjusting the rotating bearing plate and the main body of the horizontal extension arm. Then, the lifting frame group drives the stacking mechanism, the paving mesh mechanism and the trowel to descend vertically, so that the bottom surface of the trowel is in a light contact with the surface of the concrete structure layer.

[0016] During the application of corundum, the corundum is first poured into the material box, and the amount flows into the distribution plate through the timed opening and closing of the solenoid valve. Then, the corundum flows longitudinally through the distribution plate to the right side of each distribution channel. Then, through the leftward push of the pushing mechanism, it flows evenly into the mesh plate body through the staggered front discharge port, middle discharge port, and rear discharge port. Simultaneously, the high-frequency vibrator drives the mesh frame body to vibrate at high frequency, so that the corundum on the mesh plate body is evenly diffused and flows out through the mesh holes, vertically spreading and spreading on the surface of the concrete structure layer. Finally, through the linear movement of the moving vehicle body, the troweling piece smooths the surface of the concrete structure layer where the corundum has been spread.

[0017] The beneficial effects of this invention are: This invention provides a device and method for spreading anti-cracking coating on factory floors. The device comprises a spreading mechanism consisting of a lifting frame assembly, a flow divider, corrugated pipes, a material bin, a stacking mechanism, a spreading mesh mechanism, and a trowel; and a rotating bearing, a horizontal extension arm, a support frame, a ring turntable, and a weight on a mobile vehicle. The rotating bearing, horizontal extension arm, support frame, and ring turntable work together to horizontally displace the spreading mechanism directly above the concrete structure. The material bin can be opened and closed at timed intervals, and the flow divider can longitudinally expand and guide the material on the stacking mechanism. The operation of the over-stacking mechanism allows the raw materials to be staggered and orderly distributed to the paving mesh mechanism for high-frequency vibration and flattening onto the vertically discharged concrete structural layer. After being smoothed by the trowel, the purpose of uniformly spreading and paving the diamond abrasive on the surface layer of the concrete structural layer is finally achieved. In addition, the traditional process first pours a 5cm thick fine stone concrete leveling layer on the structural slab, and then applies diamond abrasive on the leveled concrete layer after it has set. Compared with the traditional process, this method reduces the number of steps in the fine stone concrete leveling layer, saves costs, overcomes common quality problems such as hollow areas, cracks, and sanding of the floor, reduces the load on the structural slab, and shortens the construction period. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a factory floor anti-cracking coating spreading device according to the present invention; Figure 2 This is a left view of the paving mechanism of the present invention; Figure 3 This is a schematic diagram of the flow divider structure of the present invention; Figure 4 This is a schematic diagram of the stacking mechanism of the present invention; Figure 5 This is a schematic diagram of the stacking base plate structure of the present invention; Figure 6 This is a schematic diagram of the feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the paving mesh structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part A in the image; Figure 9 This is a schematic diagram of the diverter plate crossbeam assembly structure of the present invention. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-9This invention provides a device and method for spreading anti-cracking coating on factory floors: its structure includes a mobile vehicle body 1, a rotating support plate 2 on the top surface of the mobile vehicle body 1, a horizontally extending machine arm body 3 horizontally arranged on the rotating support plate 2, a support frame 4 and an annular turntable 5 supported at the lower end of the horizontally extending machine arm body 3, a spreading mechanism 6 vertically arranged at the right rear of the horizontally extending machine arm body 3, a specific gravity component 7 arranged on the left side of the horizontally extending machine arm body 3, the spreading mechanism 6 includes a lifting frame assembly 61, a diverter plate 62 fixedly installed in the middle of the lifting frame assembly 61, a material box 64 connected to the upper end of the diverter plate 62 through a corrugated pipe 63, and a solenoid valve installed on the discharge pipe at the lower end of the material box 64. 641. A stacking mechanism 65 is fixedly mounted on the bottom surface of the lifting frame assembly 61 below the diversion plate 62. A spreading mesh plate mechanism 66 is mounted on the bottom left side of the stacking mechanism 65. A troweling component 67 is vertically arranged on the right side of the stacking mechanism 65. The stacking mechanism 65 includes an outer frame base 651. A stacking base plate 652 is horizontally mounted in the middle of the cavity of the outer frame base 651 through multiple fixed seats 653. A pushing mechanism 654 is flexibly pressed on the top surface of the stacking base plate 652 to push the raw materials to the left for stacking operation. The diversion plate 62 is longitudinally fixedly located on the upper right side of the stacking base plate 652. The spreading mesh plate mechanism 66 is located on the lower left side of the stacking base plate 652.

[0021] The lifting frame assembly 61 includes a quadruped 611. A diverter plate crossbeam 612 is provided on the front and rear sides of the middle of the quadruped 611. Two telescopic devices 613 are provided on the left and right sides of the quadruped 611. The lower ends of the two telescopic devices 613 are horizontally connected to a lifting plate 614 for fixing to the top surface of the outer frame base 651. Multiple support slide rods 615 passing through the quadruped 611 are provided at intervals on the top surface of the lifting plate 614. A first through-hole 616 for the lower end of the diverter plate 62 to pass through is longitudinally opened on the right side of the lower end of the quadruped 611. A second through-hole 617 for the lower end of the diverter plate 62 to pass through is longitudinally opened on the right side of the lifting plate 614.

[0022] The diversion plate 62 includes a fan-shaped plate 621. Multiple diversion baffles 622 are spaced apart in the cavity of the fan-shaped plate 621. Mounting supports 623 are welded to the left and right sides of the upper end of the fan-shaped plate 621 to be fixed to the diversion plate cross frame assembly 612. Multiple push-pull seats 624 are welded to the front and rear sides of the lower end of the fan-shaped plate 621.

[0023] The outer frame 651 has a stacking cavity 6511 in the middle. The upper right side of the stacking cavity 6511 has a third through-hole 6512 for the lower end of the diverter plate 62 to pass through. The lower left side of the stacking cavity 6511 has a stacking passage 6513 that communicates with the paving mesh mechanism 66.

[0024] The stacking bottom plate 652 includes a bottom panel 6521. Multiple stacking channels 6522 are longitudinally opened on the top surface of the bottom panel 6521. A front discharge opening 6523 is opened on the front side of every three stacking channels 6522, a middle discharge opening 6524 is opened in the middle of every three stacking channels 6522, and a rear discharge opening 6525 is opened on the rear side of every three stacking channels 6522. A guide ramp 6526 is provided on the outer edge of one stacking channel 6522 at the left and right tail ends.

[0025] The pushing mechanism 654 includes two slide rails 6541, on which servo sliders 6542 are mounted. A pushing frame 6543 is connected between the two servo sliders 6542. The bottom surface of the pushing frame 6543 is provided with multiple channel push blocks 6544 for fitting into the stacking channel 6522. The front end of the channel push block 6544 is provided with an anti-leakage push head 6545 for flexibly resisting the channel wall of the stacking channel 6522 to prevent leakage. The anti-leakage push head 6545 is made of rubber. The front side of the pushing frame 6543 is provided with multiple cleaning triangular heads 6546 for pushing the raw materials that are stuck on the edge of two adjacent stacking channels 6522 into the stacking channel 6522. The cleaning triangular heads 6546 are made of rubber.

[0026] The paving mesh mechanism 66 includes a mesh frame body 661, with multiple shock-absorbing seat bodies 662 spaced apart on the frame edge of the mesh frame body 661. An assembly opening 663 is provided at the upper right side of the mesh frame body 661. Multiple high-frequency vibrator bodies 664 are also spaced apart on the frame edge of the mesh frame body 661. A mesh plate body 665 is horizontally fitted onto the bottom surface of the mesh frame body 661, and multiple mesh holes 666 are spaced apart on the mesh plate body 665.

[0027] The diverter plate crossbeam assembly 612 includes a crossbeam 6121, and a vertical rail 6122 is vertically arranged on the front side of the crossbeam 6121. A stabilizing drag block 6123 connected to the mounting support 623 is fitted on the vertical rail 6122.

[0028] Working principle: First, the concrete structural layer a1 on the factory floor is poured. Before the concrete structural layer a1 has set, corundum is spread on the surface of the concrete structural layer a1. The corundum spreading needs to be repeated twice. The first time, two-thirds of the corundum is used, and the second time, one-third of the corundum is used.

[0029] The timing for spreading and paving the corundum before the concrete structural layer a1 has set is determined by the time it sinks about 5mm when you step on it, at which point the first application of the corundum wear-resistant material can begin.

[0030] The second application of corundum was carried out after the first application and smoothing.

[0031] Then, the main body 1 of the mobile vehicle is moved to the side of the concrete structure layer a1, and the paving mechanism 6 is turned to be directly above the concrete structure layer a1 by adjusting the rotating bearing plate 2 and the horizontal extension arm body 3. Then, the stacking mechanism 65, the paving mesh mechanism 66 and the trowel 67 are driven to descend vertically by the lifting frame group 61, so that the bottom surface of the trowel 67 is in a light contact with the surface of the concrete structure layer a1.

[0032] The steering displacement operation of the paving mechanism 6 driven by the main body of the mobile vehicle 1, the rotating bearing 2, and the main body of the horizontal extension arm is existing technology and will not be described in detail here.

[0033] The lifting adjustment of the lifting frame assembly 61 is achieved by simultaneously driving the lifting plate 614 to rise and fall through two telescopic devices 613. The lifting plate 614 is fixedly connected to the push-pull seat 624, so the diverter plate 62 will also rise and fall vertically on the diverter plate cross frame assembly 612, causing the corrugated pipe 63 to stretch. This ensures that the bottom surface of the diverter plate 62 and the top surface of the stacking base plate 652 always maintain a specific discharge gap, preventing the stacking base plate 652 from colliding with the bottom surface of the diverter plate 62 when it is raised and lowered.

[0034] When spreading the corundum, the corundum is first poured into the material box 64, and the amount flows into the diversion plate 62 by the timed opening and closing of the solenoid valve 641. Then, the corundum flows longitudinally through the diversion plate 62 to the right side of each pile material channel 6522. Then, through the leftward push of the pushing mechanism 654, it is evenly piled into the mesh plate body 665 through the staggered front discharge port 6523, middle discharge port 6524, and rear discharge port 6525. Simultaneously, the high-frequency vibrator body 664 drives the mesh frame body 661 to vibrate at high frequency, so that the piles of corundum on the mesh plate body 665 are evenly diffused and flow out through the mesh holes 666, vertically spreading and spreading on the surface of the concrete structure layer a1. Finally, through the linear movement of the moving vehicle body 1, the trowel 67 smooths the surface of the concrete structure layer a1 that has been spread with corundum.

[0035] Among them, reference appendix Figure 2 , 4 5. When the corundum flows into the right side of the splitting bottom plate 652 through the diversion plate 62, some corundum will remain on the edge of the two adjacent splitting channels 6522. When the pushing mechanism 654 pushes to the left, the anti-leakage pusher 6545 can push all the corundum in the splitting channel 6522 to the left, while the cleaning triangular head 6546 will separate and guide the corundum on the edge of the two adjacent splitting channels 6522 to the two sides of the splitting channel 6522 and push them into their respective discharge ports.

[0036] The staggered stacking of materials through the front discharge port 6523, the middle discharge port 6524, and the rear discharge port 6525 ensures that the piles of diamond grit on the mesh plate body 665 are staggered and orderly. When the mesh frame body 661 vibrates at high frequency, the piles of diamond grit can be evenly dispersed and connected together to form a flat surface covering the entire surface of the mesh frame body 661. When flowing out through the mesh holes 666, the effect of evenly spreading the material according to the usage amount can be achieved.

[0037] In addition, within 1 to 2 hours after the second application of corundum and smoothing, the concrete structural layer a1 should be polished with an external polishing machine before final setting.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description, and all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for spreading anti-cracking coating on factory floors, characterized in that: Its structure includes a mobile vehicle body, a rotating support plate on the top surface of the mobile vehicle body, a horizontal extension boom body on the rotating support plate, a support frame and an annular turntable at the lower end of the horizontal extension boom body, a paving mechanism vertically arranged at the right rear of the horizontal extension boom body, and a specific gravity component arranged on the left side of the horizontal extension boom body. The paving mechanism includes a lifting frame assembly, a flow divider plate is fixedly installed in the middle of the lifting frame assembly, a material box is connected to the upper end of the flow divider plate through a corrugated pipe, a solenoid valve is installed on the discharge pipe at the lower end of the material box, a stacking mechanism is installed below the flow divider plate and fixed to the bottom surface of the lifting frame assembly, a paving mesh plate mechanism is installed on the left bottom surface of the stacking mechanism, and a squeegee is vertically arranged on the right side of the stacking mechanism; The stacking mechanism includes an outer frame base. A stacking base plate is horizontally mounted in the middle of the cavity of the outer frame base through multiple fixed seats. A pushing mechanism is flexibly pressed on the top surface of the stacking base plate to push the raw materials to the left for stacking operation. The diversion plate is longitudinally fixed above the right side of the stacking base plate, and the spreading mesh plate mechanism is located below the left side of the stacking base plate.

2. The anti-cracking coating spreading device for factory floors according to claim 1, characterized in that: The lifting frame assembly includes a four-legged frame. A diverter plate crossbeam assembly is provided on the front and rear sides of the middle of the four-legged frame. Two telescopic joints are provided on the left and right sides of the four-legged frame. The lower ends of the two telescopic joints are horizontally connected to a lifting plate for fixing to the top surface of the outer frame. Multiple support slide rods passing through the four-legged frame are provided at intervals on the top surface of the lifting plate. A first through-hole for the lower end of the diverter plate to pass through is provided longitudinally on the right side of the lower end of the four-legged frame. A second through-hole for the lower end of the diverter plate to pass through is provided longitudinally on the right side of the lifting plate.

3. The anti-cracking coating spreading device for factory floors according to claim 2, characterized in that: The diversion plate includes a fan-shaped plate, and multiple diversion partitions are spaced apart in the cavity of the fan-shaped plate. Mounting supports for fixing to the diversion plate cross frame assembly are welded to the left and right sides of the upper end of the fan-shaped plate, and multiple push-pull seats are welded to the front and rear sides of the lower end of the fan-shaped plate.

4. The anti-cracking coating spreading device for factory floors according to claim 3, characterized in that: The outer frame base has a stacking cavity in the middle. The upper right side of the stacking cavity has a third through-hole for the lower end of the diverter plate to pass through. The lower left side of the stacking cavity has a stacking passage that communicates with the paving mesh mechanism.

5. The anti-cracking coating spreading device for factory floors according to claim 4, characterized in that: The stacking base plate includes a bottom panel. Multiple stacking channels are longitudinally opened on the top surface of the bottom panel. A front discharge port is opened on the front side of every three stacking channels, a middle discharge port is opened in the middle of every three stacking channels, and a rear discharge port is opened on the rear side of every three stacking channels. A guide ramp is provided on the outer edge of the left and right tail stacking channels.

6. The anti-cracking coating spreading device for factory floors according to claim 5, characterized in that: The pushing mechanism includes two slide rails, on which servo sliders are mounted. A pushing frame is connected between the two servo sliders. The bottom surface of the pushing frame is provided with multiple channel pushing blocks for fitting into the stacking channel. The front end of each channel pushing block is provided with an anti-leakage pushing head for flexibly resisting the channel wall of the stacking channel to prevent leakage. The anti-leakage pushing head is made of rubber. The front side of the pushing frame is provided with multiple cleaning triangular heads for pushing the raw materials that are stuck on the edge of two adjacent stacking channels into the stacking channel. The cleaning triangular heads are made of rubber.

7. A factory floor anti-cracking coating spreading device according to claim 6, characterized in that: The paving mesh structure includes a mesh frame body, with multiple shock-absorbing seat bodies spaced apart on the frame edge of the mesh frame body. An assembly opening is provided at the upper right side of the mesh frame body. Multiple high-frequency vibrator bodies are also spaced apart on the frame edge of the mesh frame body. A mesh plate body is horizontally mounted on the bottom surface of the mesh frame body, and multiple mesh holes are spaced apart on the mesh plate body.

8. The anti-cracking coating spreading device for factory floors according to claim 7, characterized in that: The diverter plate crossbeam assembly includes a crossbeam, and a vertical rail is vertically arranged on the front side of the crossbeam. A stabilizing drag block connected to the mounting support is fitted on the vertical rail.

9. A method for applying the anti-cracking coating spreading device for factory floors as described in claim 8, characterized in that: The method is as follows: First, the concrete structure layer on the factory floor is poured. Before the concrete structure layer has set, the surface of the concrete structure layer is covered with corundum. The corundum spreading needs to be repeated twice. The first time, two-thirds of the corundum is used, and the second time, one-third of the corundum is used. Then, the main body of the mobile vehicle is moved to the side of the concrete structure layer, and the paving mechanism is turned to be directly above the concrete structure layer by adjusting the rotating bearing plate and the main body of the horizontal extension arm. Then, the stacking mechanism, paving mesh mechanism and troweling piece are driven to descend vertically by the lifting frame group, so that the bottom surface of the troweling piece is in a light contact state with the surface of the concrete structure layer. During the application of corundum, the corundum is first poured into the material box, and the amount flows into the distribution plate through the timed opening and closing of the solenoid valve. Then, the corundum flows longitudinally through the distribution plate to the right side of each distribution channel. Then, through the leftward push of the pushing mechanism, it flows evenly into the mesh plate body through the staggered front discharge port, middle discharge port, and rear discharge port. Simultaneously, the high-frequency vibrator drives the mesh frame body to vibrate at high frequency, so that the corundum on the mesh plate body is evenly diffused and flows out through the mesh holes, vertically spreading and spreading on the surface of the concrete structure layer. Finally, through the linear movement of the moving vehicle body, the troweling piece smooths the surface of the concrete structure layer where the corundum has been spread.

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