Green polishing device and polishing process for terrazzo floor

Abstract

The application provides a terrazzo floor green polishing device and a polishing process, and relates to the technical field of terrazzo floor polishing. The mounting plate is provided with an adjusting mechanism for adjusting the angle of the handrail for operation of personnel with different heights. The handrail is equipped with a control panel for controlling the electronic elements of the entire device. The mounting plate is equipped with a counterweight for increasing the weight of the entire polishing device to reduce vibration during polishing. The application adopts an integrated design of wet polishing combined with sewage closed-loop recycling. The water washing device continuously sprays clean water on the polishing area, which cools and cools the polishing disc, prolongs the service life of the polishing disc, and at the same time, the water body can moisten the polishing dust to avoid dust diffusion. A sealed splash-proof device is used to form a closed operation space, effectively blocking the spraying water and mud from splashing outward, and the sewage generated during polishing can be simultaneously pumped and recycled into the water tank for solid-liquid sedimentation separation.

Description

Technical Field

[0001] This invention relates to the field of terrazzo floor polishing technology, and in particular to a green terrazzo floor polishing device and polishing process. Background Technology

[0002] Terrazzo flooring is widely used in various ground projects such as industrial plants, public venues, underground garages, and school buildings due to its wear-resistant, durable, low-cost, and integrated characteristics.

[0003] In the process of terrazzo flooring construction, shaping, and subsequent renovation and maintenance, grinding is the core process that determines the flatness and surface smoothness of the floor. Grinding equipment is needed to grind and level the cement matrix and aggregate particles on the surface of the floor.

[0004] Wet grinding suppresses dust diffusion by spraying water onto the grinding area. However, existing wet grinding equipment generally lacks an effective sealed enclosure structure. The sprayed water, carrying grinding slurry, easily splashes in all directions, polluting the surrounding completed areas and causing wastewater to flow everywhere at the work site, resulting in a large amount of subsequent cleanup work. At the same time, the wastewater from existing wet grinding equipment is mostly discharged directly without a recycling structure, resulting in serious waste of water resources. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a green polishing device and polishing process for terrazzo floors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a green polishing device and polishing process for terrazzo floors, comprising a mounting plate, wherein the mounting plate is equipped with casters for moving the entire polishing device, the mounting plate is provided with an adjustment mechanism for adjusting the angle of the handrail to accommodate operators of different heights, the handrail is equipped with a control panel for controlling the electronic components of the entire device, the mounting plate is equipped with a counterweight to increase the weight of the entire polishing device and reduce vibration during polishing, the mounting plate is equipped with a polishing device for polishing the terrazzo floor, the mounting plate is equipped with a water washing device for cooling the polishing device during polishing, reducing dust generated, and recycling wastewater, the outer circumference of the mounting plate is equipped with a sealing splash-proof device to block water stains generated by the water washing device, and the mounting plate is equipped with a ring scraper for scraping off impurities adhering to the surface of the sealing splash-proof device.

[0007] The aforementioned components achieve the following effects: the movable wheels enable flexible transport and relocation of the device; the adjustment mechanism allows for adjustment of the handrail angle to accommodate operators of different heights; the counterweight increases the overall weight of the device to reduce grinding vibration; the grinding device completes the grinding operation of the terrazzo floor; the water washing device simultaneously cools the grinding components, wet-processes grinding dust suppression, and recycles wastewater; the sealed splash-proof device prevents spray water from splashing outwards; and the ring scraper automatically cleans stains and impurities from the surface of the splash-proof structure. The entire system integrates grinding, dust suppression, wastewater recycling, and self-cleaning into a closed operating system, achieving green and dust-free grinding of terrazzo floors.

[0008] Preferably, the handrail component includes two connecting arms, with a handle installed between the two connecting arms. The control panel is installed between the two connecting arms. The adjustment mechanism includes two mounting blocks, with a gear rotatably connected between the two mounting blocks via a rotating shaft. The two connecting arms are located on both sides of the gear and are sleeved on the rotating shaft. Assembly plates are installed on both sides of the gear. Symmetrical limiting posts that restrict the rotation of the connecting arms are provided on the assembly plates. Strip plates are installed on the connecting arms. Connecting shafts are respectively provided between the two strip plates and the two assembly plates. The two connecting shafts are connected to a pawl. A limiting rod located between adjacent teeth of the gear is inserted through one of the mounting blocks to prevent the gear from rotating.

[0009] The aforementioned components achieve the following effects: the meshing structure of gears and pawls enables multi-level precise adjustment of the handrail angle; the limit rod can be inserted into the gear teeth to form a secondary lock; the double limit structure prevents the handrail angle from shifting during grinding operations; the limit post limits the maximum rotation angle of the handrail to prevent over-adjustment; effectively adapts to the operating posture of operators of different heights, and improves the comfort and operational stability of long-term operations.

[0010] Preferably, the grinding device includes a motor and three rotating shafts. The motor is mounted on the mounting plate, and the three rotating shafts are rotatably connected to the mounting plate. One of the rotating shafts passes through the mounting plate and extends to the outside of the mounting plate. Synchronous pulleys are mounted on both the end of the rotating shaft outside the mounting plate and the output shaft of the motor. Two of the synchronous pulleys are connected by a synchronous belt drive. A traction component is mounted on the rotating shaft. Several traction components are connected to a connecting disc. Several grinding discs are mounted on the connecting disc. Several connecting protrusions are mounted on the outer circumference of the connecting disc and connected to the traction components. A reserved hole is opened at the center of the connecting disc.

[0011] The effects achieved by the above components are as follows: the shaft is driven to rotate by a single motor in conjunction with a synchronous belt drive, and then the connecting disc is driven to rotate and swing through multiple sets of traction components, which effectively expands the working coverage area of ​​the grinding disc, reduces grinding blind spots and repetitive work, the synchronous belt drive runs smoothly, has low noise, and is easy to maintain, and the reserved hole in the center of the connecting disc provides space for the water washing pipeline to pass through, making the pipeline layout more compact and improving the efficiency of the overall grinding operation and the uniformity of the ground grinding.

[0012] Preferably, the traction component includes a first connecting plate and a second connecting plate. The second connecting plate is connected to a rotating shaft. The first connecting plate is rotatably connected to a connecting protrusion via a hinge shaft. A sleeve plate is installed on the first connecting plate, and an insert plate is installed on the second connecting plate. The sleeve plate and the insert plate are interlocked. A limit hole is provided on the insert plate, and a locking unit is installed on the sleeve plate to control the distance at which the insert plate is inserted into the sleeve plate.

[0013] The effect achieved by the above components is as follows: the overall length of the traction component can be adjusted by the plug-in cooperation of the sleeve plate and the insert plate. The swing amplitude of the connecting plate can be flexibly adjusted according to the initial flatness and grinding precision requirements of the terrazzo floor, adapting to different working conditions and grinding scenarios of different areas, and improving the device's scene adaptability and grinding precision.

[0014] Preferably, the locking unit includes two support plates, which are mounted on a sleeve plate. A rocker plate is rotatably connected between the two support plates via a hinge shaft. A spring is connected between one end of the rocker plate and the side of the sleeve plate opposite to the rocker plate. A limit pin is hinged to the other end of the rocker plate. The rocker plate rotates via the hinge shaft to drive the limit pin to insert into or disengage from the limit hole.

[0015] The effects achieved by the above components are as follows: the insertion and removal of the limit pin are controlled by a lever-type rocker structure, which is labor-saving and convenient to operate. The No. 1 spring provides continuous reset force to ensure that the limit pin is stably locked into the limit hole of the insert plate, preventing the length of the traction component from shifting during the grinding operation, and ensuring the stability of the grinding swing amplitude and the consistency of the grinding accuracy.

[0016] Preferably, the washing device is equipped with a water tank, the interior of which is divided into a sedimentation zone and a clear water zone by a partition. Both the clear water zone and the sedimentation zone are equipped with water pumps. The output end of the water pump in the clear water zone is connected to a second pipe, and the output end of the water pump in the sedimentation zone is connected to a first pipe. The first pipe passes through the mounting plate and extends to the ground through a pre-drilled hole. A suction plate is connected to the end of the first pipe. The water tank is equipped with a water inlet and a drain outlet. A limiting element is provided on the connecting protrusion opposite to the traction component for connecting an annular pipe. Several gooseneck pipes are provided on the annular pipe, and nozzles are provided on the gooseneck pipes. The end of the second pipe away from the water pump is connected to the annular pipe.

[0017] The effects achieved by the above components are as follows: the water tank adopts a separate design for sedimentation and clean water, which can perform solid-liquid separation on-site for the recycled grinding wastewater. The clean water can be recycled for spraying and dust suppression, reducing water consumption. The annular pipe, combined with multiple sets of flexible gooseneck nozzles, can spray the grinding area from multiple angles, improving the cooling and dust suppression effects. The suction plate simultaneously sucks up the wastewater and slurry in the work area, forming a closed-loop water system of optimized spraying, optimized sedimentation, optimized recycling, achieving green grinding operations with no dust and no wastewater overflow.

[0018] Preferably, the limiting member includes a connecting plate, which is mounted on the connecting protrusion by bolts. The connecting plate is provided with a first ring and a second ring, which form a turbine-like structure. The opposing sides of the first ring and the second ring are provided with meshing teeth. A slot is provided on the side of the second ring away from the first ring. A retaining ring that engages with the slot is rotatably connected to the first ring. A handle is connected to the second ring. A rotating plate is rotatably connected to the connecting plate by means of a hinge shaft. The end of the rotating plate away from the connecting plate is hinged to the handle by means of the hinge shaft.

[0019] The above-mentioned components achieve the following effects: the double-ring meshing method clamps the annular pipe, providing strong clamping force and stable fixation, effectively preventing pipe displacement caused by grinding vibration; the second ring can be quickly opened and closed by pulling the rotating plate, and the locking structure of the retaining ring and retaining groove enables rapid installation, disassembly and angle adjustment of the annular pipe, improving the flexibility of pipeline layout and the convenience of later maintenance.

[0020] Preferably, the sealing and splash-proof device is provided with an annular rubber curtain and mounting protrusions. Several mounting protrusions are mounted on the mounting plate. Supporting protrusions are symmetrically mounted on the mounting protrusions. A squeezing cam is rotatably connected between two of the supporting protrusions via a shaft. A handle is mounted on the squeezing cam. A sliding rod is slidably connected to the mounting protrusion. Several connecting protrusions are mounted on the annular rubber curtain. The end of the sliding rod away from the mounting protrusion is connected to the connecting protrusion. A second spring is sleeved on the sliding rod, with its two ends respectively connected to the mounting protrusion and the connecting protrusion. A limiting groove is provided on the sliding rod for limiting the squeezing cam.

[0021] The above components achieve the following effects: the lifting and lowering of the annular rubber curtain is controlled by rotating the squeezing cam to press the slide rod. During operation, the bottom of the rubber curtain is tightly against the ground, forming a closed grinding chamber, which effectively prevents the spray water from splashing outward and the grinding dust from spreading outward. The second spring provides the slide rod with the return elasticity. The squeezing cam can maintain the contact state of the rubber curtain when it is locked into the limiting groove, ensuring the sealing of the wet grinding operation and avoiding sewage and dust pollution of the surrounding environment.

[0022] Preferably, the bottom blade of the annular scraper extends outward in a trumpet shape, and a connecting ring is installed at the top of the annular scraper to connect with the mounting plate.

[0023] The effect achieved by the above-mentioned components is as follows: the trumpet-shaped blade structure can fit tightly against the inner wall of the ring-shaped rubber curtain. When the rubber curtain rises and resets, the blade can automatically scrape off the mud, dust and other impurities adhering to its inner wall, eliminating the need for manual wiping and cleaning. This not only maintains the cleanliness of the rubber curtain and extends its service life, but also prevents impurities from dripping and contaminating the ground that has been polished, thus improving the convenience of finishing the work.

[0024] A polishing process based on a green polishing device for terrazzo floors includes the following steps: S1, preferably, equipment placement and parameter adjustment: the device is moved to the work area, and the handrail height and polishing swing amplitude are adjusted; S2, the sealing and splash-proof structure is in place, and the annular rubber curtain is lowered to form a closed work space; S3, preferably, wet polishing operation: the polishing device and the clean water spray system are started to carry out the polishing operation; S4, preferably, wastewater closed-loop recycling: the wastewater is simultaneously pumped to the sedimentation area of ​​the water tank for solid-liquid separation; S5, work completion and equipment cleaning: the power system is turned off, the rubber curtain is raised to complete self-cleaning and the settled sludge is discharged.

[0025] The effects achieved by the above components are as follows: by adopting a streamlined operation process, from equipment debugging and closed operation to grinding and recycling and self-cleaning, the entire process of dust and wastewater is under closed-loop control. The operation process is standardized and orderly, which not only ensures the grinding quality and uniformity of terrazzo floor, but also greatly reduces the pollution of the surrounding environment and improves the green environmental protection and construction efficiency of grinding operations.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, an integrated design of wet grinding and wastewater closed-loop recycling is adopted. The water washing device continuously sprays clean water onto the grinding area, which cools down the grinding disc and extends its service life. At the same time, the water wets the grinding dust, preventing the dust from being raised and spread. Combined with the sealing and splash-proof device, a closed working space is formed, which effectively prevents the sprayed water and mud from splashing outward. The wastewater generated by grinding can be simultaneously pumped and recycled into a water tank for solid-liquid sedimentation and separation. The upper layer of clean water can be recycled for spraying operations, which greatly reduces water consumption and achieves green grinding operations with no dust and no wastewater overflow throughout the process, which meets environmental protection construction standards.

[0027] 2. In this invention, the adjustment mechanism composed of gear meshing and a double locking structure can achieve multi-level precise adjustment of the handrail angle, which can adapt to the operating posture of operators of different heights and effectively alleviate fatigue during long-term operation; the claw and the limit rod form a double limit lock, which can prevent the handrail angle from shifting during the grinding operation, ensuring operational stability and safety; the limit post can limit the maximum rotation angle of the handrail and prevent over-adjustment from causing structural damage.

[0028] 3. In this invention, multiple sets of traction components are linked to drive the connecting disc to perform a compound motion of rotation and oscillation, which effectively expands the coverage of the grinding disc in a single operation, reduces repeated grinding processes, and significantly improves the overall grinding efficiency. The overall length of the traction components can be quickly adjusted through the locking unit, thereby flexibly adjusting the swing amplitude of the connecting disc. It can be adapted to different grinding processes such as coarse grinding, fine grinding, and polishing, as well as different ground operation scenarios with different flatness, making the equipment more versatile and adaptable.

[0029] 4. In this invention, the sealing and splash-proof device adopts a liftable annular rubber curtain structure. During operation, it can be lowered to fit tightly against the ground to form a stable closed working chamber with excellent splash and dust prevention effect. During the process of the rubber curtain rising and resetting after the operation, the mud, dust and other impurities adhering to the inner wall of the curtain can be automatically scraped off by the annular scraper. There is no need for manual disassembly and wiping, which effectively reduces the workload of equipment maintenance and improves the efficiency of operation completion. Attached Figure Description

[0030] Figure 1 This invention provides a three-dimensional structural schematic diagram of a green polishing device and polishing process for terrazzo floors. Figure 2 This is a three-dimensional structural diagram from another angle of the present invention, which presents a green polishing device and polishing process for terrazzo floors. Figure 3 This invention provides a structural schematic diagram of the grinding disc in a green grinding device and grinding process for terrazzo floors. Figure 4 This invention provides a structural schematic diagram of a green polishing device and polishing process for terrazzo floors. Figure 5 This invention proposes a green polishing device and polishing process for terrazzo floors. Figure 4 Schematic diagram of the structure at point A; Figure 6 This invention provides a structural schematic diagram of a limiting component for a green polishing device and polishing process for terrazzo floors. Figure 7 This invention provides a structural schematic diagram of a handrail component for a green polishing device and polishing process for terrazzo floors. Figure 8This invention proposes a green polishing device and polishing process for terrazzo floors. Figure 7 Schematic diagram of the structure at point B; Figure 9 This invention presents a structural schematic diagram of a green polishing device for terrazzo floors and a sealing and splash-proof device for the polishing process.

[0031] Legend: 1. Mounting plate; 2. Moving wheel; 3. Adjustment mechanism; 31. Mounting block; 32. Rotating shaft; 33. Gear; 34. Limiting rod; 35. Assembly plate; 36. Limiting post; 37. Strip plate; 38. Connecting shaft; 39. Claw; 4. Handrail component; 41. Connecting arm; 42. Handle; 5. Control panel; 6. Counterweight; 7. Grinding device; 71. Motor; 72. Synchronous pulley; 73. Synchronous belt; 74. Rotating shaft; 75. Traction component; 751. Connecting plate No. 1; 752. Connecting plate No. 2; 753. Insert plate; 754. Limiting hole; 755. Sleeve plate; 756. Support plate; 757. Rocker; 758. Spring No. 1; 759. Limiting pin; 76. 761. Connecting plate; 762. Pre-drilled hole; 77. Grinding disc; 8. Water tank; 81. Pipe No. 1; 82. Pipe No. 2; 83. Annular pipe; 84. Gooseneck pipe; 85. Limiting component; 851. Connecting plate; 852. Ring No. 1; 853. Ring No. 2; 854. Gear; 855. Slot; 856. Snap ring; 857. Turning plate; 858. Pull handle; 9. Annular scraper; 91. Connecting ring; 10. Sealing and splash-proof device; 101. Annular rubber ring; 102. Connecting protrusion; 103. Mounting protrusion; 104. Supporting protrusion; 105. Shaft; 106. Extrusion cam; 107. Handle; 108. Slide rod; 109. Limiting groove; 1010. Spring No. 2. Detailed Implementation

[0032] like Figures 1-9As shown, a green terrazzo floor polishing device and polishing process are disclosed. The mounting plate 1 serves as the load-bearing base of the entire device, with multiple sets of casters 2 mounted on its bottom. These casters 2 are universal wheels with locking mechanisms, facilitating the device's movement within the work area. During operation, the wheels can be locked to prevent displacement. An adjustment mechanism 3 and a handrail 4 are located on one side of the top surface of the mounting plate 1. A control panel 5 is integrated into the handrail 4, containing a built-in control circuit that is electrically connected to the device's motor, water pump, and other electronic components for starting and stopping the equipment and adjusting operating parameters. A counterweight 6 is placed on the top surface of the mounting plate 1. The number of counterweights 6 can be increased or decreased according to the polishing conditions, increasing the overall weight of the device to counteract the reverse vibration generated during polishing and improving operational stability. A grinding device 7 is provided below the mounting plate 1. A water tank 8 for a water washing device is installed on the top side of the mounting plate 1. A sealing splash-proof device 10 is installed on the outer periphery of the bottom surface of the mounting plate 1. A ring scraper 9 is provided on the inner side of the sealing splash-proof device 10. The ring scraper 9 is fixed to the bottom surface of the mounting plate 1 by a connecting ring 91 at the top.

[0033] The handrail component 4 consists of two parallel connecting arms 41 and a handle 42. The handle 42 is horizontally fixed between the top ends of the two connecting arms 41. The control panel 5 is embedded in the horizontal rod between the two connecting arms 41, allowing the operator to operate it directly while holding the handrail. The adjustment mechanism 3 includes two symmetrically fixed mounting blocks 31 on the top surface of the mounting plate 1. A rotating shaft 32 is horizontally inserted between the two mounting blocks 31. A gear 33 is mounted on the shaft of the rotating shaft 32. The bottom ends of the two connecting arms 41 are respectively fitted onto the two ends of the rotating shaft 32 and are located on the left and right sides of the gear 33. An assembly plate 35 is fixed on both end faces of the gear 33. Two symmetrically distributed limiting posts 36 are fixed on the assembly plate 35. The limiting posts 36 protrude from the surface of the assembly plate 35 and can block the sides of the connecting arms 41, limiting the maximum rotation angle of the handrail. Each connecting arm 41 has a strip plate 37 fixed on its sidewall facing the gear 33. A connecting shaft 38 is provided between the strip plate 37 and the mounting plate 35 on the same side. Both connecting shafts 38 are hinged to a pawl 39, the end of which can engage with adjacent teeth of the gear 33 to form a limit. A transverse through hole is provided on the sidewall of one of the mounting blocks 31, and a limiting rod 34 is movably inserted into the through hole. The rod of the limiting rod 34 can be inserted into the tooth groove of the gear 33 to form a circumferential lock on the gear 33.

[0034] The motor 71 of the grinding device 7 is fixedly installed in the center area of ​​the top surface of the mounting plate 1. Three rotating shafts 74 are vertically rotatably connected to the mounting plate 1, and the three rotating shafts 74 are arranged in a triangle. The top end of one of the rotating shafts 74 extends upward through the top surface of the mounting plate 1. A synchronous pulley 72 is fixed to both the top end of this rotating shaft 74 and the output shaft of the motor 71. A synchronous belt 73 is tensioned between two synchronous pulleys 72. The bottom end of each rotating shaft 74 is connected to a traction component 75. The three sets of traction components 75 are connected to a connecting plate 76. Several grinding discs 77 are evenly mounted on the bottom surface of the connecting plate 76. The grinding discs 77 can be replaced with grinding discs of corresponding abrasives according to different processes such as coarse grinding, fine grinding, and polishing. Multiple connecting protrusions 761 are evenly arranged on the outer circumference of the connecting plate 76. The connecting protrusions 761 are hinged to the ends of the traction components 75. A through reserved hole 762 is opened in the center of the connecting plate 76, through which the water supply pipe of the washing device passes.

[0035] The traction component 75 consists of a first connecting plate 751 and a second connecting plate 752. The second connecting plate 752 is fixedly connected to the bottom end of the rotating shaft 74, and the first connecting plate 751 is rotatably connected to the connecting protrusion 761 via a hinge shaft. A sleeve plate 755 is fixed to one end of the first connecting plate 751 near the second connecting plate 752, and an insert plate 753 is fixed to one end of the second connecting plate 752 near the first connecting plate 751. The insert plate 753 can be inserted into the sleeve plate 755 to form a sliding fit. Multiple spaced limiting holes 754 are provided on the surface of the insert plate 753 along the length direction. A locking unit is installed on the sleeve plate 755 to control the distance by which the insert plate 753 is inserted into the sleeve plate 755. The locking unit includes two support plates 756 fixed to the top surface of the sleeve plate 755. A rocker plate 757 is rotatably connected between the two support plates 756 via a hinge shaft. A spring 758 is connected between the bottom surface of one end of the rocker plate 757 and the top surface of the sleeve plate 755. A limit pin 759 is hinged to the other end of the rocker plate 757. The limit pin 759 penetrates vertically through the top plate of the sleeve plate 755 and can be inserted into the limit hole 754 of the lower insert plate 753.

[0036] The water tank 8 of the washing device is fixed to one side of the top surface of the mounting plate 1. A vertical partition inside the water tank 8 divides its interior into two independent chambers: a sedimentation zone and a clear water zone. A water pump is installed in each chamber. The output end of the water pump in the clear water zone is connected to a second pipe 82, which extends downwards and eventually connects to the body of the annular pipe 83. The output end of the water pump in the sedimentation zone is connected to a first pipe 81, which penetrates downwards through the mounting plate 1 and extends through a pre-drilled hole 762 in the center of the connecting plate 76 to near the ground. A suction plate is installed at the bottom of the first pipe 81, with its surface close to the ground. The top surface of the water tank 8 has a water inlet and a drain outlet. The water inlet corresponds to the clear water zone and is used to replenish clear water, while the drain outlet corresponds to the sedimentation zone and is used to discharge deposited sludge. A limiting member 85 is installed on the side of the connecting protrusion 761 facing away from the traction member 75. Multiple sets of limiting members 85 together clamp and fix the annular tube 83. Several gooseneck tubes 84 are connected to the tube body of the annular tube 83. Each gooseneck tube 84 is equipped with a nozzle at its end. The nozzle can be adjusted by bending the gooseneck tube 84 to face the contact area between the grinding disc 77 and the ground.

[0037] The connecting plate 851 of the limiting member 85 is fixed to the side wall of the connecting protrusion 761 by bolts. The connecting plate 851 is provided with a first ring 852 and a second ring 853, which engage to form a channel for clamping the annular tube 83. Both the first ring 852 and the second ring 853 have teeth 854 on their opposing surfaces, which mesh to increase clamping friction. A groove 855 is provided on the outer end face of the second ring 853. A retaining ring 856 is rotatably connected to the end of the first ring 852, and the retaining ring 856 can rotate and engage in the groove 855 to form a lock. A handle 858 is fixed to the outer side of the second ring 853. A rotating plate 857 is rotatably connected to the connecting plate 851 via a hinge shaft, and the free end of the rotating plate 857 is hinged to the rod of the handle 858.

[0038] The sealing and splash-proof device 10 includes an annular rubber curtain 101 and multiple sets of mounting protrusions 103. The mounting protrusions 103 are evenly fixed circumferentially to the outer periphery of the bottom surface of the mounting plate 1. Each mounting protrusion 103 has a supporting protrusion 104 fixed on both sides. A cam 106 is rotatably connected between two supporting protrusions 104 via a shaft 105. A handle 107 is fixed to the side wall of the cam 106 for easy rotation by the operator. A sliding hole is vertically opened on the mounting protrusion 103, and a sliding rod 108 slides through the hole. Multiple connecting protrusions 102 are evenly fixed to the top outer periphery of the annular rubber curtain 101. The bottom end of the sliding rod 108 is fixedly connected to the connecting protrusion 102. A second spring 1010 is fitted onto the rod of the sliding rod 108, with both ends of the second spring 1010 abutting against the bottom surface of the mounting protrusion 103 and the top surface of the connecting protrusion 102, respectively. A limiting groove 109 is provided on the rod body of the slide rod 108, and the cam surface of the extrusion cam 106 can be embedded in the limiting groove 109 to form an axial limit on the slide rod 108.

[0039] An annular scraper 9 is disposed on the inner side of the annular rubber curtain 101. A connecting ring 91 is fixed to the top of the annular scraper 9, and the connecting ring 91 is fixed to the bottom surface of the mounting plate 1 by fasteners. The bottom blade of the annular scraper 9 expands outward in a trumpet shape, and the outer side of the blade is set against the inner wall of the annular rubber curtain 101.

[0040] Working principle: When adjusting the handrail angle, first pull the limiting rod 34 out of the mounting block 31 to release the circumferential lock on the gear 33. Hold the handle 42 and rotate the connecting arm 41, causing the connecting arm 41 to rotate around the rotating shaft 32. Simultaneously, the rotating connecting arm 41 drives the strip plate 37 to swing synchronously. The strip plate 37, through the connecting shaft 38, pulls the pawl 39 to rotate around the connecting shaft 38 on the mounting plate 35, causing the end of the pawl 39 to disengage from the tooth groove of the gear 33. At this point, the handrail angle can be freely adjusted. After the handrail angle is adjusted to a position suitable for the operator's height, release the force. The pawl 39, under its own weight and the linkage structure, resets and re-engages into the corresponding tooth groove of the gear 33, forming a first-level lock. Then, insert the limiting rod 34 back into the mounting block 31 and embed it into the tooth groove of the gear 33, forming a second-level double lock, thus fixing the handrail angle. The limiting post 36 limits the maximum rotation range of the handrail, preventing over-adjustment.

[0041] When adjusting the grinding swing amplitude, press the end of the rocker arm 757 near the first spring 758. The rocker arm 757 rotates around the hinge axis on the support plate 756, compressing the first spring 758 and causing it to contract. At the same time, the other end of the rocker arm 757 drives the limiting pin 759 upward, disengaging it from the limiting hole 754 of the insert plate 753. At this time, the first connecting plate 751 and the second connecting plate 752 can be pulled, causing the insert plate 753 to slide within the sleeve plate 755, changing the overall length of the traction component 75, and thus adjusting the swing radius of the connecting plate 76. After adjusting to the desired length, release the rocker arm 757. The first spring 758 rebounds, pushing the rocker arm 757 back to its original position, causing the limiting pin 759 to insert downward into the corresponding limiting hole 754, completing the length locking of the traction component 75. During the grinding operation, the motor 71 outputs power, which drives one of the rotating shafts 74 to rotate through the synchronous pulley 72 and the synchronous belt 73. The rotating shaft 74 drives the connecting plate 76 to move through the traction member 75. The other two rotating shafts 74 and the matching traction member 75 form a motion constraint on the connecting plate 76, so that the connecting plate 76 drives the grinding plate 77 to perform a compound motion of rotation and oscillation, thereby expanding the grinding coverage of a single stroke.

[0042] The washing and wastewater recycling operations are conducted simultaneously with the grinding process. The water pump in the clear water zone is activated at the same time as grinding begins. Water from the clear water zone is transported via pipe 82 to the annular pipe 83, then distributed to each gooseneck pipe 84, and finally sprayed onto the grinding contact area through nozzles. The sprayed water cools the grinding disc 77 during high-speed grinding, extending its lifespan, and also wets the dust generated during grinding, preventing it from being stirred up and spread. Simultaneously, the water pump in the sedimentation zone is activated, drawing wastewater mixed with sludge from the area enclosed by the annular rubber curtain 101 into the sedimentation zone of the water tank 8 through the suction plate at the bottom of pipe 81. The wastewater settles naturally in the sedimentation zone, with solid sludge settling at the bottom of the chamber. The clarified water at the top can overflow into the clear water zone for recycling, reducing water consumption. After the operation is completed, the sludge at the bottom of the sedimentation zone can be discharged through the drain outlet, and clear water can be added to the clear water zone through the water inlet.

[0043] The sealing, splash-proof, and self-cleaning process is as follows: Before operation, rotating handle 107 causes the extrusion cam 106 to rotate around shaft 105. The cam surface of the extrusion cam 106 gradually presses against the slide rod 108, causing the slide rod 108 to slide downwards, stretching and storing energy in the second spring 1010. The slide rod 108 drives the annular rubber curtain 101 to descend synchronously until the bottom end of the annular rubber curtain 101 is tightly against the ground. At this point, the cam surface of the extrusion cam 106 engages in the limiting groove 109 of the slide rod 108, maintaining the downward pressure of the annular rubber curtain 101 and forming a closed working space, preventing spray water from splashing outwards and limiting dust overflow. After operation, the extrusion cam 106 is rotated again to disengage the cam surface from the limiting groove 109, and the second spring 1010 releases its elasticity and rebounds, causing the slide rod 108 and the annular rubber curtain 101 to rise and return to their original positions. During the upward movement of the annular rubber curtain 101, its inner wall comes into close contact with the blade of the annular scraper 9. The blade scrapes away the mud, dust and other impurities adhering to the inner wall, thus achieving automatic cleaning of the rubber curtain without the need for manual wiping.

Claims

1. A green polishing device for terrazzo floors, comprising a mounting plate (1), characterized in that: The mounting plate (1) is equipped with casters (2) for moving the entire grinding device. The mounting plate (1) is equipped with an adjustment mechanism (3) for adjusting the angle of the handrail (4) to accommodate people of different heights. The handrail (4) is equipped with a control panel (5) for controlling the electronic components of the entire device. The mounting plate (1) is equipped with a counterweight (6) for increasing the weight of the entire grinding device and reducing vibration during grinding. The mounting plate (1) is equipped with a grinding device (7) for grinding the terrazzo floor. The mounting plate (1) is equipped with a water washing device for cooling the grinding device (7) during grinding, reducing dust and recycling wastewater. The outer circumference of the mounting plate (1) is equipped with a sealing splash guard (10) for blocking water stains generated by the water washing device. The mounting plate (1) is equipped with a ring scraper (9) for scraping off impurities adhering to the surface of the sealing splash guard (10).

2. The green polishing device for terrazzo floors according to claim 1, characterized in that, The armrest component (4) has two connecting arms (41), and a handle (42) is installed between the two connecting arms (41). The control panel (5) is installed between the two connecting arms (41). The adjustment mechanism (3) has two mounting blocks (31), and a gear (33) is rotatably connected between the two mounting blocks (31) via a rotating shaft (32). The two connecting arms (41) are located on both sides of the gear (33) and are sleeved on the rotating shaft (32). Mounting plates are installed on both sides of the gear (33). (35) The assembly plate (35) is provided with symmetrical limiting posts (36) that limit the rotation of the connecting arm (41). A strip plate (37) is installed on the connecting arm (41). A connecting shaft (38) is provided between the two strip plates (37) and the two assembly plates (35). The two connecting shafts (38) are connected together by a pawl (39). A limiting rod (34) located between adjacent teeth of the gear (33) is inserted through one of the mounting blocks (31) to prevent the gear (33) from rotating.

3. The green polishing device for terrazzo floors according to claim 2, characterized in that, The grinding device (7) is equipped with a motor (71) and three rotating shafts (74). The motor (71) is mounted on the mounting plate (1). Three rotating shafts (74) are rotatably connected to the mounting plate (1). One of the rotating shafts (74) passes through the mounting plate (1) and extends to the outside of the mounting plate (1). A synchronous pulley (72) is mounted on one end of the rotating shaft (74) outside the mounting plate (1) and on the output shaft of the motor (71). The two synchronous pulleys (72) are connected by a synchronous belt (73). A traction component (75) is mounted on the rotating shaft (74). Several traction components (75) are connected to a connecting plate (76). Several grinding discs (77) are mounted on the connecting plate (76). Several connecting protrusions (761) are mounted on the outer circumferential surface of the connecting plate (76) and connected to the traction component (75). A reserved hole (762) is opened at the center of the connecting plate (76).

4. The green polishing device for terrazzo floors according to claim 3, characterized in that, The traction component (75) includes a first connecting plate (751) and a second connecting plate (752). The second connecting plate (752) is connected to the rotating shaft (74). The first connecting plate (751) is rotatably connected to the connecting protrusion (761) via a hinge shaft. A sleeve plate (755) is installed on the first connecting plate (751). An insert plate (753) is installed on the second connecting plate (752). The sleeve plate (755) and the insert plate (753) are interlocked. A limit hole (754) is provided on the insert plate (753). A locking unit is installed on the sleeve plate (755) to control the distance at which the insert plate (753) is inserted into the sleeve plate (755).

5. The green polishing device for terrazzo floors according to claim 4, characterized in that, The locking unit contains two support plates (756), which are mounted on a sleeve plate (755). A rocker plate (757) is rotatably connected between the two support plates (756) via a hinge shaft. A spring (758) is connected between one end of the rocker plate (757) and the side opposite to the sleeve plate (755). A limit pin (759) is hinged to the other end of the rocker plate (757). The rocker plate (757) rotates via the hinge shaft to drive the limit pin (759) to insert into or disengage from the limit hole (754).

6. The green polishing device for terrazzo floors according to claim 5, characterized in that, The washing device is equipped with a water tank (8). The interior of the water tank (8) is divided into a sedimentation zone and a clear water zone by a partition. Both the clear water zone and the sedimentation zone of the water tank (8) are equipped with water pumps. The output end of the water pump in the clear water zone is connected to a second pipe (82). The output end of the water pump in the sedimentation zone is connected to a first pipe (81). The first pipe (81) passes through the mounting plate (1) and extends to the ground through the reserved hole (762). The end of the first pipe (81) is connected to a water suction plate. The water tank (8) is equipped with a water inlet and a sewage outlet. The connecting protrusion (761) is equipped with a limiting element (85) on the side opposite to the traction element (75) for connecting the annular pipe (83). The annular pipe (83) is equipped with several gooseneck pipes (84). The gooseneck pipes (84) are equipped with nozzles. The end of the second pipe (82) away from the water pump is connected to the annular pipe (83).

7. The green polishing device for terrazzo floors according to claim 6, characterized in that, The limiting member (85) includes a connecting plate (851), which is mounted on the connecting protrusion (761) by bolts. The connecting plate (851) has a first ring (852) and a second ring (853). The first ring (852) and the second ring (853) form a turbine-like structure. Meshing teeth (854) are provided between the opposite sides of the first ring (852) and the second ring (853). A slot (855) is provided on the side of the ring (853) away from the first ring (852). A retaining ring (856) is rotatably connected to the first ring (852) and is engaged with the slot (855). A handle (858) is connected to the second ring (853). A rotating plate (857) is rotatably connected to the connecting plate (851) via a hinge shaft. The end of the rotating plate (857) away from the connecting plate (851) is hinged to the handle (858) via a hinge shaft.

8. The green polishing device for terrazzo floors according to claim 7, characterized in that, The sealing splash-proof device (10) is provided with an annular rubber curtain (101) and mounting protrusions (103). Several mounting protrusions (103) are installed on the mounting plate (1). Supporting protrusions (104) are symmetrically installed on the mounting protrusions (103). A squeezing cam (106) is rotatably connected between two of the supporting protrusions (104) by means of a shaft (105). A handle (107) is installed on the squeezing cam (106). A sliding handle (107) is installed on the mounting protrusions (103). A sliding rod (108) is connected to the annular rubber curtain (101), and several connecting protrusions (102) are installed on the annular rubber curtain (101). The end of the sliding rod (108) away from the mounting protrusion (103) is connected to the connecting protrusion (102). A second spring (1010) is sleeved on the sliding rod (108) and its two ends are respectively connected to the mounting protrusion (103) and the connecting protrusion (102). A limiting groove (109) for limiting the extrusion cam (106) is opened on the sliding rod (108).

9. The green polishing device for terrazzo floors according to claim 8, characterized in that, The bottom blade of the annular scraper (9) extends outward in a trumpet shape, and a connecting ring (91) is installed on the top of the annular scraper (9) to connect with the mounting plate (1).

10. A polishing process based on the green polishing device for terrazzo floors according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Equipment positioning and parameter debugging: Move the grinding device to the terrazzo floor work area to be treated by moving the wheel (2), pull out the limit rod (34) of the adjustment mechanism (3), rotate the connecting arm (41) of the handrail (4) to adjust the height of the handle (42) to a position suitable for the height of the operator, reset the pawl (39) to engage the teeth of the gear (33) and insert back the limit rod (34) to complete the handrail locking; press the rocker (757) of the traction component (75) to make the limit pin (759) disengage from the limit hole (754), adjust the insertion length of the first connecting plate (751) and the second connecting plate (752), change the swing radius of the connecting plate (76), release the rocker (757) to make the limit pin (759) engage in the corresponding limit hole (754) to complete the setting of the grinding amplitude; S2, Sealing and splash-proof structure in place: Rotate the handle (107) of the extrusion cam (106) so that the extrusion cam (106) squeezes the slide bar (108) downward and slides it. The second spring (1010) is stretched, and the slide bar (108) drives the annular rubber curtain (101) to descend to the bottom and closely abut against the terrazzo floor, forming a closed grinding working chamber. The extrusion cam (106) is inserted into the limiting groove (109) of the slide bar (108) to maintain the abutment state. S3. Wet Grinding Operation: Start the motor (71) of the grinding device (7) through the control panel (5). The motor (71) drives the rotating shaft (74) to rotate through the synchronous pulley (72) and synchronous belt (73). The traction component (75) drives the connecting plate (76) to drive the grinding disc (77) to perform a rotating and swinging grinding motion. At the same time, start the water pump in the clean water area of ​​the water washing device to transport the water in the clean water area of ​​the water tank (8) to the ring pipe (83) through the second pipe (82). The water is continuously sprayed through the nozzle of the gooseneck pipe (84) to the contact area between the grinding disc (77) and the ground to cool down the grinding disc (77) and suppress the grinding dust from rising. S4. Wastewater closed-loop recycling: The water pump in the sedimentation zone of the water tank (8) is started simultaneously with the grinding spray. The grinding wastewater and mud in the area enclosed by the annular rubber curtain (101) are pumped to the sedimentation zone of the water tank (8) through the suction plate at the end of the No. 1 pipe (81) for solid-liquid sedimentation separation. The operator holds the handle (42) and pushes the device to move at a constant speed along the terrazzo floor, completing the grinding operation of the entire floor area by area. S5. Finishing and cleaning of equipment: After grinding, turn off the motor (71) and the two water pumps, and continue to rotate the extrusion cam (106) to disengage it from the limit groove (109) of the slide bar (108). The second spring (1010) rebounds and drives the slide bar (108) and the ring rubber curtain (101) to rise and reset. During the rise of the ring rubber curtain (101), its inner wall is in contact with the blade of the ring scraper (9) to scrape off the mud and impurities adhering to the inner wall. Finally, the sludge in the sedimentation area is discharged through the drain of the water tank (8), and clean water is added to the clean water area through the water inlet to complete the whole set of green grinding operation of terrazzo floor.

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