Ground grinding device

Abstract

The ground grinding device comprises a machine body, movable frame bodies, a telescopic air cylinder, a lifting plate, a driving assembly, an elastic assembly and a grinding assembly, the elastic assembly comprises an outer ring plate, an inner ring plate, a movable rod, a spring and a supporting plate, the movable frame bodies are installed on the left side and the right side of the machine body correspondingly, and the opposite faces of the movable frame bodies are connected with the telescopic air cylinder; the telescopic ends of the telescopic air cylinders on the two sides are connected with a lifting plate, the lower end of the lifting plate is connected with an outer ring plate, a distance exists between the lifting plate and the outer ring plate, the inner side of the outer ring plate is rotationally connected with an inner ring plate, movable rods are slidably installed on the inner ring plate in a penetrating mode, the top ends of the movable rods are jointly fixedly connected with a ring piece, and the lower ends of the movable rods are jointly connected with a grinding assembly. The supporting plate is in threaded connection with the lower end of the movable rod, the movable rod is sleeved with the spring, and the two ends of the spring are connected with the supporting plate and the inner ring plate correspondingly. The grinding force of the grinding assembly can be effectively adjusted in a large range, and the grinding device can adapt to grinding operation of various different concrete grounds.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and in particular to a floor grinding device. Background Art

[0002] In the field of construction and ground maintenance, concrete floor grinding is an important and common task that directly affects the flatness, aesthetics and subsequent performance of the floor.

[0003] However, traditional concrete floor grinding devices often lack flexible and precise adjustment mechanisms for grinding force. Many devices utilize a fixed downward pressure mechanism, making it impossible to adjust the grinding force based on actual conditions. For example, when working with old concrete floors, due to the uneven hardness of the surface, fixed grinding force can easily lead to over-grinding in some areas, affecting both grinding quality and reducing work efficiency.

[0004] Therefore, there is an urgent need for a floor grinding device to solve the problem that traditional concrete floor grinding devices cannot adjust the grinding force according to actual conditions. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a floor grinding device to solve the problem that the traditional concrete floor grinding device cannot adjust the grinding force according to actual conditions.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A floor grinding device comprises a machine body, a movable frame, a telescopic cylinder, a lifting plate, a driving assembly, an elastic assembly and a grinding assembly, wherein the elastic assembly comprises an outer ring plate, an inner ring plate, several movable rods, a spring and a supporting plate, the left and right sides of the machine body are respectively downwardly mounted with movable frames, the opposite sides of the movable frames on both sides are respectively connected to vertically arranged telescopic cylinders, the telescopic ends of the telescopic cylinders on both sides are upwardly connected to a lifting plate located below the machine body, the lower end of the lifting plate is connected to the outer ring plate, and the lifting plate is connected to the inner ring plate. There is a gap between the outer ring plates, and the inner side of the outer ring plate is rotatably connected to the inner ring plate. Several movable rods are installed on the inner ring plate so as to slide vertically. Several of the movable rods can pass through the top of the inner ring plate upward and are fixedly connected to a circle of ring plates. The lower ends of several movable rods are commonly connected to a grinding assembly for grinding. The lower end of the movable rod is provided with a section of external thread. The support plate is threadedly connected to the lower end of the movable rod. The spring is sleeved on the movable rod, and the two ends are respectively connected to the support plate and the inner ring plate. The driving assembly is used to drive the rotation of the inner ring plate.

[0008] To optimize the above technical solutions, specific measures taken also include:

[0009] Furthermore, the grinding assembly includes a rotating part, a locking bolt and a grinding disc. The bottom ends of several movable rods are detachably connected to the rotating part. A mounting groove is provided at the bottom end of the rotating part. A threaded hole that passes through the mounting groove is provided at the center of the upper end of the rotating part. A groove is provided at the center of the grinding disc, and the grinding disc is installed in the mounting groove. The locking bolt is used to pass through the groove from the lower end of the grinding disc and then be screwed into the threaded hole to fix the grinding disc in the mounting groove.

[0010] Furthermore, a plurality of clamping blocks are provided on the inner wall of the installation groove at equal distances and in a circular distribution, and a clamping groove for cooperating with the clamping blocks is correspondingly provided on the side wall of the grinding disc.

[0011] Furthermore, the driving assembly includes a driving motor, gears and gear grooves. A circle of gear grooves is provided on the inner side of the annular inner ring plate. The driving motor is installed on the lifting plate. The driving end of the driving motor is downwardly arranged and connected to a gear. The gear is engaged with the gear groove. The driving motor is used to drive the gear to drive the inner ring plate to rotate.

[0012] Furthermore, the diameter of the gear is smaller than the diameter of the tooth groove, the gear is engaged with part of the tooth groove, and there is a gap between the gear and the tooth groove at the farther end.

[0013] Furthermore, it also includes a dust suction assembly, which includes a dust suction pipe and a closure cover, and a dust suction ring groove is provided at the bottom end of the rotating part and is located on the periphery of the mounting groove, and a ring-shaped ring cavity is provided inside the rotating part. The rotating part is also provided with several dust guide channels connecting the dust suction ring groove and the ring cavity, and the upper end of the rotating part is provided with several dust guide ports connected to the ring cavity, and a circle of upwardly convex threaded ring is provided on the upper end surface of the rotating part and is located on the periphery of the dust guide port, the closure cover is threadedly connected to the threaded ring and the cover is provided above the dust guide port, and the upper end of the closure cover is connected to a vertical dust guide pipe, one end of the dust suction pipe can be vertically slid and rotatably sealed and inserted in the dust guide pipe, and the other end is connected to the dust cleaner after passing through the gap between the gear and the farther tooth groove, and the vacuum cleaner is installed on the side of the machine body.

[0014] Furthermore, the upper end surface of the rotating part is provided with a hexagonal groove corresponding to the threaded hole, and a hexagonal block is placed in the hexagonal groove, and a vertical square rod is fixedly installed on the lower surface of the hexagonal block. The upper end of the locking bolt is provided with a vertical square groove correspondingly, and the hexagonal block is used to insert the hexagonal groove after the locking bolt is installed in the threaded hole and allow the square rod to be inserted into the square groove.

[0015] Furthermore, a push rod is fixedly mounted on the top inner wall of the enclosure, and the push rod is used to push against the upper end of the hexagonal block.

[0016] Furthermore, a set of crawler wheels for movement are respectively installed on opposite sides of the movable frame located on the left and right sides of the machine body.

[0017] Furthermore, a water tank is fixedly installed on the upper end of the body, a water filling port is opened on the upper surface of the water tank, and a tank cover is installed at the water filling port, a drain pipe is connected to the side wall of the water tank, and a sealing cover is provided at the end of the drain pipe.

[0018] The beneficial effects of the present invention are:

[0019] The present invention has the ability to adjust the grinding force intelligently and flexibly through the setting of the elastic component. When the present invention is in operation, the telescopic cylinder drives the lifting plate to move downward, and the outer ring plate and the inner ring plate descend synchronously. When the grinding component contacts the concrete floor, the telescopic cylinder drives the lifting plate to move further downward, which can compress the spring on the outer side of the movable rod, and then the grinding component applies elastic downward pressure to the concrete floor through the spring; when the grinding force needs to be adjusted in the face of some special concrete floors, the initial state of the support plate can be adjusted, and the support plate can be moved upward or downward on the outer side of the movable rod by rotating the support plate. This causes the spring to be compressed or stretched, and the greater the initial compression of the spring after adjustment, the greater the downward force generated when the subsequent lifting plate drives the grinding assembly downward, and vice versa, the smaller the pressure. In this way, a wide range of adjustment of the grinding force of the grinding assembly can be effectively achieved, which can adapt to the grinding operations of various different concrete floors and is more flexible to use. The inner ring plate is then driven by the driving assembly to rotate with the grinding assembly to complete the grinding operation. Among them, the setting of the inner ring plate can cooperate with the lifting plate to limit the moving range of the movable rod, and can also drive several movable rods to move synchronously, thereby ensuring the reliability of the grinding of the grinding assembly.

[0020] The telescopic cylinder in the present invention is combined with springs and other structures to flexibly and accurately adjust the pressure of the grinding disc to adapt to different floors; unique locking bolts and other structures can realize convenient loading and unloading of the grinding disc, reduce maintenance costs, and ensure construction progress; the dust collection component strongly absorbs dust, purifies the environment, protects the health of personnel, and comprehensively improves the efficiency and safety of grinding operations.

[0021] The locking bolts and other structures of the present invention give the grinding disc the characteristic of convenient and efficient replacement. The grinding disc that is easy to wear is installed in the installation slot. Through the locking bolts and other structures, the operator can easily load and unload the grinding disc. Compared with the cumbersome replacement process of traditional grinding devices, this design does not require complicated operations, which greatly reduces the time and energy consumed in disassembling and installing the grinding disc. In large-scale ground grinding projects, in the scenario of frequent replacement of grinding discs, the advantages of this convenient replacement method are particularly obvious. It not only reduces the equipment maintenance cost, but also shortens the downtime, ensures the continuity of the construction progress, and enables the grinding operation to be carried out efficiently and continuously.

[0022] During the grinding process, the dust suction component of the present invention plays a vital role, building an efficient and healthy dust treatment system. When the grinding disc rotates, the dust suction component runs synchronously, which can quickly and effectively suck the dust generated by grinding. Unlike traditional equipment with poor dust suction effect and difficulty in collecting fine dust, the dust suction component of this device adopts professional design, which can strongly adsorb dust of various particle sizes and effectively prevent dust from spreading on the construction site. This not only improves the construction environment and reduces the pollution of dust to the environment, but more importantly, it greatly reduces the risk of operators inhaling dust and ensures their health. It meets the strict requirements of modern construction on environmental protection and occupational health and safety, and significantly improves the use effect of the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a floor grinding device proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the bottom structure of a floor grinding device proposed in the present invention;

[0025] Figure 3 This is a schematic diagram from a first perspective of a partial structure of a floor polishing device proposed in the present invention;

[0026] Figure 4 A schematic diagram from a second perspective of a partial structure of a floor polishing device proposed in the present invention;

[0027] Figure 5 A schematic diagram showing a partial structure of a floor polishing device proposed in the present invention from a third perspective;

[0028] Figure 6 A schematic diagram showing a partial structure of a floor polishing device proposed by the present invention from a fourth perspective;

[0029] Figure 7 This is a schematic structural diagram of a rotating part of a floor grinding device proposed by the present invention;

[0030] Figure 8 This is a partial structural cross-sectional view of a floor grinding device proposed by the present invention;

[0031] Figure 9 for Figure 8 A magnified view of the structure at point A;

[0032] Figure 10 This is a schematic diagram of the rear side structure of a floor grinding device proposed in the present invention.

[0033] Reference numerals: 101 - body, 102 - moving frame, 103 - side plate, 104 - telescopic cylinder, 105 - lifting plate, 106 - connecting rod, 107 - outer ring plate, 108 - inner ring plate, 109 - ring plate, 110 - movable rod, 111 - mounting plate, 112 - rotating part, 113 - mounting groove, 114 - grinding disc, 201 - driving motor, 202 - gear, 203 - tooth groove, 301 - card slot, 302 - card block, 303 - groove, 30 4-threaded hole, 305-locking bolt, 401-dust suction ring groove, 402-dust guide channel, 403-ring cavity, 404-dust guide port, 405-threaded ring, 406-sealing cover, 407-dust guide pipe, 408-dust suction pipe, 409-bellows, 410-vacuum cleaner, 501-square groove, 502-hexagonal block, 503-square rod, 504-retaining rod, 601-spring, 602-support plate, 701-water tank, 702-box cover, 703-drain pipe. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 and attached Figure 8As shown, a floor grinding device according to an embodiment of the present invention includes a body 101, a movable frame 102, a telescopic cylinder 104, a lifting plate 105, a driving component, an elastic component and a grinding component. The elastic component includes an outer ring plate 107, an inner ring plate 108, several movable rods 110, a spring 601 and a supporting plate 602. The movable frames 102 are respectively installed downward on the left and right sides of the body 101. The opposite sides of the movable frames 102 on both sides are respectively connected to the vertically arranged telescopic cylinders 104 through the side plates 103. The telescopic ends of the telescopic cylinders 104 on both sides are upwardly connected to the lifting plate 105 located below the body 101. The lower end of the lifting plate 105 is connected to the outer ring plate 107 through the connecting rod 106, and the lifting plate 105 and the outer ring plate are connected. There is a spacing between the plates 107, and the inner side of the outer ring plate 107 is rotatably connected to the inner ring plate 108. The inner ring plate 108 is provided with several through holes that are equidistant and distributed in a ring shape. Several movable rods 110 are installed vertically slidably in the corresponding through holes. Several movable rods 110 can pass through the top of the inner ring plate 108 upward and are fixedly connected with a circle of ring plates 109. The lower ends of several movable rods 110 are commonly connected to a grinding assembly for grinding. The lower end of the movable rod 110 is provided with an external thread, and the support plate 602 is threadedly connected to the lower end of the movable rod 110. The spring 601 is sleeved on the movable rod 110, and the two ends are respectively connected to the upper end surface of the support plate 602 and the lower end surface of the inner ring plate 108. The driving assembly is used to drive the rotation of the inner ring plate 108.

[0036] The present invention is provided with an elastic component. When the grinding component contacts the concrete floor, the telescopic cylinder 104 drives the lifting plate 105 to move further downward, which can compress the spring 601 on the outside of the movable rod 110, and then the spring 601 causes the grinding component to apply elastic downward pressure to the concrete floor; when the grinding force needs to be adjusted in the face of some special concrete floors, the initial state of the support plate 602 can be adjusted. By rotating the support plate 602, the support plate 602 can be moved upward or downward on the outside of the movable rod 110, thereby causing the spring 601 to be compressed or stretched, and when the spring 601 The greater the initial compression after adjustment, the greater the downward force generated when the subsequent lifting plate 105 drives the grinding assembly to move downward, and vice versa, the smaller the pressure. In this way, a wide range of adjustment of the grinding force of the grinding assembly can be effectively achieved, which can adapt to the grinding operations of various different concrete floors and is more flexible to use. Afterwards, the inner ring plate 108 is driven by the driving assembly to rotate with the grinding assembly to complete the grinding operation. Among them, the setting of the inner ring plate 108 can cooperate with the lifting plate 105 to limit the moving range of the movable rod 110, and can also drive several movable rods 110 to move synchronously, thereby ensuring the reliability of the grinding of the grinding assembly.

[0037] During use, since the compression of spring 601 is proportional to the downward pressure of the grinding assembly, the operator can accurately adjust the pressure of the grinding assembly on the ground according to the actual conditions such as the hardness and flatness of the ground. Whether it is an old ground with uneven hardness or a newly poured concrete surface, this mechanism can achieve moderate grinding to avoid the problem of excessive or insufficient grinding, which not only ensures the grinding quality but also improves the working efficiency. At the same time, this adjustment method is easy to operate and does not require the help of additional tools. It can quickly respond to the grinding needs of different areas.

[0038] As attached Figure 7 As shown, in another specific embodiment based on the above, the grinding assembly includes a rotating part 112, a locking bolt 305 and a grinding disc 114. The bottom ends of several movable rods 110 are detachably connected to the rotating part 112 through the mounting plate 111 and the bolt. The bottom end of the rotating part 112 is provided with a mounting groove 113, and the center of the upper end of the rotating part 112 is provided with a threaded hole 304 that passes through the mounting groove 113. The center of the grinding disc 114 is provided with a groove 303, and the grinding disc 114 is installed in the mounting groove 113. The locking bolt 305 is used to pass through the groove 303 from the lower end of the grinding disc 114 and then be screwed into the threaded hole 304 to fix the grinding disc 114 in the mounting groove 113. In this way, when installing the grinding disc 114, the grinding disc 114 can be directly placed in the mounting groove 113 below the rotating part 112, and then the locking bolt 305 can be inserted into the groove 303 and threadedly connected to the threaded hole 304, so that the grinding disc 114 can be conveniently locked in the mounting groove 113 of the rotating part 112. At the same time, the grinding disc 114 in the mounting groove 113 can be flexibly loaded and unloaded, making it easy to replace the grinding disc 114 that is easy to wear.

[0039] The inner wall of the mounting groove 113 is provided with a plurality of locking blocks 302 arranged in an annular pattern at equal intervals, and the side wall of the grinding disc 114 is provided with corresponding locking grooves 301 for engaging with the locking blocks 302. When installing the grinding disc 114, aligning the locking grooves 301 on the outer side of the grinding disc 114 with the locking blocks 302 in the mounting groove 113 can play a role in limiting the position of the grinding disc 114, thereby ensuring that the grinding disc 114 can rotate synchronously with the rotating member 112 when the rotating member 112 rotates, thereby increasing the stability of use.

[0040] In a further specific embodiment based on the above, the above-mentioned driving assembly includes a driving motor 201, a gear 202 and a tooth groove 203. The inner side of the annular inner ring plate 108 is provided with a circle of tooth grooves 203 distributed in an annular shape with equal distances. The driving motor 201 is installed on the lifting plate 105. The driving end of the driving motor 201 is downwardly arranged and connected to the gear 202. The gear 202 is engaged with the tooth groove 203. The driving motor 201 is used to drive the gear 202 to drive the inner ring plate 108 to rotate.

[0041] The diameter of the gear 202 is smaller than the diameter of the tooth groove 203 , the gear 202 is meshed with a portion of the tooth groove 203 , and a gap exists between the gear 202 and the tooth groove 203 at the more distal end.

[0042] In a further specific embodiment based on the above, a dust collection component is also included, which includes a dust collector 410, a dust collection pipe 408 and a cover 406. A dust collection ring groove 401 is provided at the bottom end of the rotating member 112 and is located on the periphery of the mounting groove 113. A ring-shaped ring cavity 403 is provided inside the rotating member 112. Several dust guide channels 402 connecting the dust collection ring groove 401 and the ring cavity 403 are also provided on the rotating member 112. Several dust guide channels 402 are equidistantly distributed in a ring shape. The upper end of the rotating member 112 is provided with several dust collection channels 402 equidistantly distributed in a ring shape and connected to the ring cavity 403. The dust guide port 404 is connected to the cavity 403, and a circle of upward convex threaded ring 405 is provided on the upper end surface of the rotating part 112 and located on the periphery of the dust guide port 404. The sealing cover 406 is threadedly connected to the threaded ring 405 and the cover is arranged above the dust guide port 404. The upper end of the sealing cover 406 is connected to a vertical dust guide pipe 407. One end of the dust suction pipe 408 can be vertically slid and rotatably sealed and inserted into the dust guide pipe 407, and the other end passes through the gap between the gear 202 and the farther tooth groove 203 and is connected to the vacuum cleaner 410. The vacuum cleaner 410 is installed on the side of the body 101.

[0043] The dust collection tube 408 can be fixedly passed through the lifting plate 105 and connected to a dust collector 410 via a bellows 409. During the grinding process, the suction action of the dust collector 410 allows the dust generated by the grinding process to directly enter the dust collection ring groove 401 of the rotating member 112, then flow along the dust guide channel 402 into the annular cavity 403, and enter the cover 406 above the rotating member 112 through the dust guide port 404. Finally, it passes through the dust collection tube 408 and the bellows 409 and enters the dust collector 410 for collection, thereby effectively preventing dust from flying during the grinding process. In addition, the mounting plate 111 at the bottom of the movable rod 110 and the rotating part 112 are connected by bolts, so that the rotating part 112 can be easily disassembled. After the rotating part 112 is disassembled, the cover 406 in the threaded ring 405 can be directly rotated to remove it, which facilitates the cleaning operation of the dust collection ring groove 401, the dust guide channel 402, the ring cavity 403 and the dust guide port 404 in the rotating part 112, and the use effect is better.

[0044] As attached Figure 9As shown, the upper end surface of the rotating member 112 is further provided with a hexagonal groove connected to the threaded hole 304, and a hexagonal block 502 is placed in the hexagonal groove, and a vertical square rod 503 is fixedly installed on the lower surface of the hexagonal block 502. A vertical square groove 501 is correspondingly provided at the upper end of the locking bolt 305. The hexagonal block 502 is used to insert the hexagonal groove after the locking bolt 305 is installed in the threaded hole 304, and the square rod 503 is inserted into the square groove 501. In this way, when the locking bolt 305 fixes the grinding disc 114 in the installation groove 113, the hexagonal block 502 can be placed in the hexagonal groove, so that the square rod 503 at the bottom of the hexagonal block 502 is directly inserted into the square groove 501 at the top of the locking bolt 305, which can effectively prevent the locking bolt 305 from loosening, making the grinding disc 114 more stable after installation, and will not fall off due to loosening of the locking bolt 305, further improving safety during use.

[0045] A push rod 504 is fixedly mounted on the top inner wall of the cover 406, and the push rod 504 is used to abut the upper end of the hexagonal block 502. Therefore, when the cover 406 is threadedly installed in the threaded ring 405, the push rod 504 in the cover 406 just abuts the hexagonal block 502, which can effectively prevent the hexagonal block 502 from disengaging from the hexagonal groove, and further prevent the locking bolt 305 from loosening.

[0046] In another specific embodiment based on the above, a set of crawler wheels for movement are respectively installed on opposite sides of the movable frame 102 located on the left and right sides of the machine body 101.

[0047] As attached Figure 10 As shown, in another specific embodiment based on the above, a water tank 701 is fixedly mounted on the upper end of the body 101. A water inlet is provided on the upper surface of the water tank 701, and a tank cover 702 is installed at the water inlet. A drainage pipe 703 is connected to the side wall of the water tank 701, and a cap is installed at the end of the drainage pipe 703. In this way, when the grinding assembly needs to apply high-intensity grinding to the concrete floor, water can be added to the water tank 701 to increase the overall weight of the body 101, thereby ensuring that the device remains stable during high-intensity grinding.

[0048] In another specific embodiment based on the above, structures such as handles may be further provided on the side of the body 101 as needed.

[0049] A specific embodiment of the present invention is as follows:

[0050] When the concrete floor needs to be polished, the machine body 101 can be moved to the position to be polished, and then the telescopic cylinder 104 drives the lifting plate 105 to move downward, and the outer ring plate 107 below the lifting plate 105 moves downward together. Since the inner ring plate 108 is rotated and arranged in the outer ring plate 107, the inner ring plate 108 also moves downward together until the grinding disc 114 in the rotating member 112 contacts the concrete floor. As the lifting plate 105 moves further downward, the inner ring plate 108 will move downward on the outside of the movable rod 110, and the elastic member on the outside of the movable rod 110 The spring 601 is compressed, causing the grinding disc 114 in the rotating part 112 to apply a certain downward pressure on the concrete floor, and the compression amount of the spring 601 is proportional to the downward pressure, thereby achieving the purpose of flexibly adjusting the grinding force of the grinding disc 114. When the appropriate grinding force is adjusted, the inner ring plate 108 can be driven to rotate in the outer ring plate 107 through the driving assembly, and the inner ring plate 108 can drive the rotating part 112 to rotate together through the movable rod 110, and the grinding disc 114 in the rotating part 112 also rotates together, thereby realizing the grinding operation of the concrete floor.

[0051] Moreover, during the grinding process, the dust generated during the grinding process can be continuously sucked out by means of the dust suction component, effectively preventing the raised dust from causing harm to the health of the user, and achieving better use effect.

[0052] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0053] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of protection of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, it is understood that various changes, modifications, substitutions, embellishments and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and they should be regarded as the scope of protection of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floor polishing device, characterized in that: The invention comprises a machine body (101), a movable frame (102), a telescopic cylinder (104), a lifting plate (105), a driving component, an elastic component and a grinding component, wherein the elastic component comprises an outer ring plate (107), an inner ring plate (108), a plurality of movable rods (110), a spring (601) and a supporting plate (602), the left and right sides of the machine body (101) are respectively downwardly mounted with movable frames (102), the opposite sides of the movable frames (102) on both sides are respectively connected with vertically arranged telescopic cylinders (104), the telescopic ends of the telescopic cylinders (104) on both sides are upwardly connected with a lifting plate (105) located below the machine body (101), the lower end of the lifting plate (105) is connected to the outer ring plate (107), and the lifting plate (105) is connected to the inner ring plate (108). There is a spacing between the outer ring plates (107), and the inner side of the outer ring plate (107) is rotatably connected to the inner ring plate (108). Several movable rods (110) are installed on the inner ring plate (108) in a vertically slidable manner. Several movable rods (110) can pass through the top of the inner ring plate (108) upward and are fixedly connected to a circle of ring plates (109). The lower ends of the several movable rods (110) are commonly connected to a grinding assembly for grinding. The lower end of the movable rod (110) is provided with a section of external thread. The support plate (602) is threadedly connected to the lower end of the movable rod (110). The spring (601) is sleeved on the movable rod (110), and the two ends are respectively connected to the support plate (602) and the inner ring plate (108). The driving assembly is used to drive the rotation of the inner ring plate (108).

2. A floor polishing device according to claim 1, characterized in that: The grinding assembly includes a rotating member (112), a locking bolt (305) and a grinding disc (114). The bottom ends of several movable rods (110) are detachably connected to the rotating member (112). A mounting groove (113) is provided at the bottom end of the rotating member (112). A threaded hole (304) that penetrates the mounting groove (113) is provided at the center of the upper end of the rotating member (112). A groove (303) is provided at the center of the grinding disc (114). The grinding disc (114) is installed in the mounting groove (113). The locking bolt (305) is used to pass through the groove (303) from the lower end of the grinding disc (114) and then be screwed into the threaded hole (304) to fix the grinding disc (114) in the mounting groove (113).

3. A floor grinding device according to claim 2, characterized in that: The inner wall of the installation groove (113) is provided with a plurality of clamping blocks (302) distributed in an annular manner at equal distances, and the side wall of the grinding disc (114) is correspondingly provided with a clamping groove (301) for matching with the clamping blocks (302).

4. A floor polishing device according to claim 2, characterized in that: The driving assembly comprises a driving motor (201), a gear (202) and a tooth groove (203); a circle of tooth grooves (203) is provided on the inner side of the annular inner ring plate (108); the driving motor (201) is mounted on the lifting plate (105); a driving end of the driving motor (201) is downwardly disposed and connected to a gear (202); the gear (202) is meshed with the tooth groove (203); and the driving motor (201) is used to drive the gear (202) to drive the inner ring plate (108) to rotate.

5. A floor polishing device according to claim 4, characterized in that: The diameter of the gear (202) is smaller than the diameter of the tooth groove (203), the gear (202) is engaged with a portion of the tooth groove (203), and a gap exists between the gear (202) and the tooth groove (203) at the more distal end.

6. A floor grinding device according to claim 5, characterized in that: The utility model also includes a dust collection component, wherein the dust collection component includes a dust collector (410), a dust collection pipe (408) and a sealing cover (406); a dust collection ring groove (401) is provided at the bottom end of the rotating member (112) and is located on the periphery of the installation groove (113); a ring-shaped ring cavity (403) is provided inside the rotating member (112); a plurality of dust guide channels (402) communicating with the dust collection ring groove (401) and the ring cavity (403) are provided on the rotating member (112); a plurality of dust guide ports (404) communicating with the ring cavity (403) are provided on the upper end of the rotating member (112); the rotating member (112) A circle of upwardly convex threaded ring (405) is provided on the upper end surface and located on the periphery of the dust guide port (404); the sealing cover (406) is threadedly connected to the threaded ring (405) and the cover is arranged above the dust guide port (404); the upper end of the sealing cover (406) is connected to a vertical dust guide pipe (407); one end of the dust suction pipe (408) can slide vertically and rotatably seal and slide into the dust guide pipe (407), and the other end passes through the gap between the gear (202) and the tooth groove (203) at the more distal end and is connected to the vacuum cleaner (410); the vacuum cleaner (410) is installed on the side of the body (101).

7. A floor grinding device according to claim 6, characterized in that: The upper end surface of the rotating member (112) is further provided with a hexagonal groove connected to the threaded hole (304), and a hexagonal block (502) is placed in the hexagonal groove. A vertical square rod (503) is fixedly installed on the lower surface of the hexagonal block (502). A vertical square groove (501) is correspondingly provided at the upper end of the locking bolt (305). The hexagonal block (502) is used to be inserted into the hexagonal groove after the locking bolt (305) is installed in the threaded hole (304), so that the square rod (503) is inserted into the square groove (501).

8. A floor polishing device according to claim 7, characterized in that: A supporting rod (504) is also fixedly mounted on the top inner wall of the sealing cover (406), and the supporting rod (504) is used to support the upper end of the hexagonal block (502).

9. The floor grinding device according to claim 1, characterized in that: A set of walking track wheels for movement is respectively installed on opposite sides of the movable frame (102) located on the left and right sides of the machine body (101).

10. The floor grinding device according to claim 1, characterized in that: A water tank (701) is fixedly mounted on the upper end of the machine body (101). A water filling port is provided on the upper surface of the water tank (701), and a tank cover (702) is mounted at the water filling port. A drainage pipe (703) is connected to the side wall of the water tank (701), and a sealing cap is provided at the end of the drainage pipe (703).

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