Floor grinding machine

Abstract

The utility model relates to the technical field of grinding machine, the utility model provides a floor grinder, it includes frame, grinding mechanism, first adjusting frame and second adjusting frame, grinding mechanism sets up on the frame for grinding floor, first adjusting frame one end articulates on the frame, second adjusting frame and first adjusting frame away from the other end of frame articulates, second adjusting frame away from first adjusting frame one end is equipped with handle, and second adjusting frame and first adjusting frame cooperate for adjusting handle height and deflection angle. The floor grinder provided by the utility model, through setting up first adjusting frame and second adjusting frame articulated with each other, realize flexible adjustment of handle height and deflection angle, solved the poor adaptability of the handle of the prior floor grinder because of fixed setting or limited adjustment range, and the technical problem that different height operating personnel and diversified operation scene demand cannot be satisfied.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, specifically to a floor grinding machine. Background Technology

[0002] In the fields of building decoration, floor renovation, and industrial site maintenance, floor grinding machines are the core equipment for achieving leveling and fine processing of floors. Through their grinding mechanisms, they cut and grind different materials such as concrete, epoxy, and marble to ultimately achieve the required flatness, smoothness, or specific textures. With the improvement of floor construction standards and the diversification of work scenarios (such as small indoor spaces in residences, open areas in large factories, and narrow corners), operators have placed higher demands on the ease of operation, adaptability, and working comfort of floor grinding machines.

[0003] Currently, most floor grinding machines on the market use handles, which are the core components for operators to push the equipment and control its direction of movement. These handles are mostly fixed or have a single-angle adjustment structure. While fixed handles are simple in structure, they cannot be adapted to the height differences of operators or their working postures (such as standing or semi-squatting). Prolonged operation can easily lead to fatigue in the operator's lower back and arms, increasing labor intensity. On the other hand, handles with a single angle adjustment can only achieve angle deflection within a limited range, making it difficult to adapt to the operational needs of different grinding scenarios. For example, when dealing with narrow areas such as walls and column bases, fixed or limited-adjustment handles can easily interfere with surrounding obstacles, preventing the operator from applying force smoothly. This not only affects grinding accuracy (leading to missed areas and uneven grinding) but may also reduce work efficiency due to restricted operating posture.

[0004] In summary, the poor adaptability and inconvenience of the handle adjustment function in existing floor grinders have become key factors restricting the improvement of their work efficiency and the reduction of the labor intensity of operators. There is an urgent need for a floor grinder structure that can flexibly and stably adjust the handle height and deflection angle to meet the needs of diverse work scenarios and different operators. Utility Model Content

[0005] To overcome the above-mentioned defects, the present invention provides a floor grinding machine, which solves the technical problem that the handle of the existing floor grinding machine has poor adaptability due to its fixed setting or limited adjustment range, and cannot meet the needs of operators of different heights and diverse working scenarios.

[0006] According to one aspect, at least one embodiment of the present invention provides a floor grinding machine, comprising: Frame; A grinding mechanism is mounted on the vehicle frame and is used to grind the floor. A first adjustment frame, one end of which is hinged to the vehicle frame; The second adjustment bracket is hinged to the other end of the first adjustment bracket away from the vehicle frame. The second adjustment bracket is provided with a handle at the end away from the first adjustment bracket. The second adjustment bracket cooperates with the first adjustment bracket to adjust the height and deflection angle of the handle.

[0007] For example, in at least one embodiment of the present invention, a floor grinding machine further includes: A locking rod, which is slidably mounted on the second adjusting frame; A snap-fit ​​plate is disposed on the second adjusting frame and located at the hinge between the second adjusting frame and the first adjusting frame. The snap-fit ​​plate is semi-circular, and a plurality of grooves are spaced apart on the outer peripheral wall of the snap-fit ​​plate. The snap-fit ​​rod snaps into the grooves. After the second adjusting frame swings relative to the first adjusting frame, the snap-fit ​​rod can snap into the groove, so that the second adjusting frame and the first adjusting frame are snapped and fixed.

[0008] For example, in a floor grinding machine provided in at least one embodiment of the present invention, the first adjusting frame is further provided with an elastic element. One end of the elastic element is connected to the locking rod, and the other end is connected to the hinge of the second adjusting frame and the first adjusting frame. The elastic element is used to elastically pull the locking rod so that the locking rod is locked in the groove.

[0009] For example, in at least one embodiment of the present invention, a floor grinding machine further includes: A baffle is provided on the first adjusting frame; A swing plate is hinged to the frame on one side and detachably connected to the baffle on the other side. The swing plate and the baffle cooperate to support the first adjustment frame after the angle is adjusted.

[0010] For example, in at least one embodiment of the present invention, a floor grinding machine is provided, wherein at least two adjusting holes are provided at intervals on the baffle, and a threaded connecting rod is provided on the swing plate, the threaded connecting rod being inserted into the adjusting hole, and further comprising: A fastening nut is provided, which is threadedly connected to the threaded connecting rod. After the threaded connecting rod passes through the adjusting hole, the fastening nut secures the threaded connecting rod.

[0011] For example, in at least one embodiment of the present invention, a floor grinding machine is provided, wherein the handle is rotatably mounted on the second adjusting frame, and further includes: A fastener is rotatably mounted on the second adjusting frame, and the fastener can pass through the second adjusting frame and be threadedly connected to the handle.

[0012] For example, in at least one embodiment of the present invention, a floor grinding machine is provided, wherein the frame has an arc-shaped hole, and further includes: A rotating frame is rotatably mounted on the vehicle frame, and a pull rod is provided on the rotating frame, the pull rod vertically passing through the arc-shaped hole; The wheel is rotatably mounted on the rotating frame and located at the bottom of the frame. The connecting rod is capable of sliding along the arc-shaped hole in the horizontal plane to steer the wheel.

[0013] For example, in at least one embodiment of the present invention, a floor grinding machine further includes a limiting plate. One end of the limiting plate is hinged to the pull rod. The limiting plate is provided with a protrusion. The limiting plate can swing until the protrusion abuts against the frame to pull the pull rod, thereby limiting the pull rod.

[0014] For example, in at least one embodiment of the present invention, a floor grinding machine includes a grinding mechanism comprising: A grinding tool, which is mounted on the grinding frame; A grinding element is rotatably disposed at the bottom of the grinding tool, and multiple grinding elements are provided.

[0015] For example, in at least one embodiment of the present invention, a floor grinding machine further includes: A control unit is provided on the second adjustment frame and is used to operate the grinding mechanism.

[0016] The beneficial effects of this utility model are as follows: In this invention, a two-stage adjustment structure is formed by the hinge between the first adjustment frame and the frame, and the hinge between the second adjustment frame and the first adjustment frame. The operator can change the handle height by adjusting the angle of the first adjustment frame relative to the frame, and change the handle deflection angle by adjusting the angle of the second adjustment frame relative to the first adjustment frame. This allows the handle to adapt to the usage needs of operators of different heights, and also to different working postures such as standing and semi-squatting. This avoids fatigue in the waist and arms of the operator due to the fixed position or limited adjustment range of the handle, thus reducing the intensity of labor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a floor grinding machine in one embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 for Figure 1 A magnified view of part B; Figure 4 for Figure 1 A schematic diagram of the swing plate in the embodiment; Figure 5 for Figure 4 A magnified view of a portion at point C; Figure 6 This is a structural schematic diagram of a floor grinding machine from another angle in one embodiment of the present invention; Figure 7 for Figure 6 A magnified view of a portion of point D; Figure 8 for Figure 6 A magnified view of a portion at point E; Figure 9 This is a structural schematic diagram of a floor grinding machine from another angle in one embodiment of the present invention.

[0019] In the diagram: 1. Frame; 2. Grinding mechanism; 21. Grinding tool; 22. Grinding part; 3. First adjusting frame; 4. Second adjusting frame; 5. Handle; 6. Clamping rod; 7. Clamping plate; 71. Groove; 8. Elastic element; 9. Baffle; 91. Adjusting hole; 10. Swing plate; 101. Threaded connecting rod; 11. Fastening nut; 12. Fastener; 13. Arc-shaped hole; 14. Rotating frame; 15. Wheel; 16. Pull rod; 17. Limiting plate; 171. Protrusion; 18. Control unit. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0021] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-9 As shown, this illustrates a floor grinder according to one embodiment of the present invention, comprising a frame 1, a grinding mechanism 2, a first adjusting frame 3, and a second adjusting frame 4. Figure 1As shown, the grinding mechanism 2 is mounted on the frame 1. The grinding mechanism 2 is used to contact the floor surface, cutting and grinding concrete and marble floors to achieve a smoother and finer finish. One end of the first adjusting frame 3 is hinged to the frame 1, allowing it to rotate relative to the frame 1 around the hinge point, thus adjusting its angle. The other end of the second adjusting frame 4 is hinged to the first adjusting frame 3, away from the frame 1. The second adjusting frame 4 can also rotate relative to the first adjusting frame 3 around its hinge point, adjusting its angle. A handle 5 is located at the end of the second adjusting frame 4 away from the first adjusting frame 3, providing a grip for the operator. By gripping the handle 5, the operator can move the entire floor grinder, controlling its direction of travel. The second adjusting frame 4 works in conjunction with the first adjusting frame 3 to adjust the height and deflection angle of the handle 5.

[0027] A two-stage adjustment structure is formed by the hinge between the first adjustment frame 3 and the frame 1, and the hinge between the second adjustment frame 4 and the first adjustment frame 3. The operator can change the height of the handle 5 by adjusting the angle of the first adjustment frame 3 relative to the frame 1, and change the deflection angle of the handle 5 by adjusting the angle of the second adjustment frame 4 relative to the first adjustment frame 3. This allows the handle 5 to adapt to the usage needs of operators of different heights, and also to different working postures such as standing and semi-squatting. This avoids fatigue in the waist and arms of the operator due to the fixed position or limited adjustment range of the handle 5, thus reducing the intensity of labor.

[0028] Furthermore, such as Figure 2 As shown, it also includes a locking rod 6 and a locking plate 7. The locking rod 6 is slidably mounted on the second adjusting frame 4. The locking plate 7 is mounted on the second adjusting frame 4 and located at the hinge between the second adjusting frame 4 and the first adjusting frame 3. The locking plate 7 is semi-circular, and several grooves 71 are spaced apart on its outer peripheral wall. The locking rod 6 engages with the grooves 71. After the second adjusting frame 4 swings relative to the first adjusting frame 3, the locking rod 6 can engage in the grooves 71, thus fixing the second adjusting frame 4 and the first adjusting frame 3. By engaging the locking rod 6 with different grooves 71 on the locking plate 7, the angle of the second adjusting frame 4 relative to the first adjusting frame 3 is fixed.

[0029] Furthermore, the first adjusting frame 3 is also provided with an elastic element 8. One end of the elastic element 8 is connected to the locking rod 6, and the other end is connected to the hinge of the second adjusting frame 4 and the first adjusting frame 3. The elastic element 8 is used to elastically pull the locking rod 6 so that the locking rod 6 is locked in the groove 71.

[0030] Several spaced grooves 71 provide multiple angle options to meet the fixed requirements of the handle 5 deflection angle in different working scenarios. When the angle of the second adjustment frame 4 needs to be adjusted, the operator pulls the locking rod 6 to overcome the tension of the elastic element 8, causing the locking rod 6 to disengage from the groove 71. At this time, the elastic element 8 is stretched. After the angle is adjusted, the operator releases the locking rod 6, and the elastic element 8 contracts under its own elastic force, pulling the locking rod 6 to move automatically towards the locking plate 7 until the locking rod 6 is embedded in the corresponding groove 71, completing the automatic locking and fixing. During the operation of the equipment, the tension of the elastic element 8 always acts on the locking rod 6 to prevent the locking rod 6 from disengaging from the groove 71 due to vibration, ensuring stability.

[0031] It should also be noted that, as Figure 3 and Figure 4 As shown, it also includes a baffle 9 and a swing plate 10. The baffle 9 is mounted on the first adjustment frame 3. The swing plate 10 is hinged on one side of the frame 1 and detachably connected to the baffle 9 on the other side. The swing plate 10 and the baffle 9 cooperate to support the first adjustment frame 3 after the angle is adjusted.

[0032] The baffle 9 has at least two adjustable holes 91 spaced apart. The swing plate 10 has a threaded connecting rod 101, which is inserted into the adjustable holes 91. It also includes a fastening nut 11, which is threadedly connected to the threaded connecting rod 101. After the threaded connecting rod 101 passes through the adjustable holes 91, the fastening nut 11 secures the threaded connecting rod 101. The support height is adjusted by the cooperation of the threaded connecting rod 101 with different adjustable holes 91, and secured by the fastening nut 11.

[0033] Specifically, when adjusting the angle of the first adjusting frame 3, first unscrew the fastening nut 11, pull the threaded connecting rod 101 out of the currently inserted adjusting hole 91, and disconnect the swing plate 10 from the baffle 9. After adjusting the angle of the first adjusting frame 3, rotate the swing plate 10, select the appropriate position of the adjusting hole 91 according to the height of the first adjusting frame 3, and insert the threaded connecting rod 101 into the adjusting hole 91. Tighten the fastening nut 11 into the end of the threaded connecting rod 101 that extends out of the adjusting hole 91 until the fastening nut 11 and the baffle 9 are tightly fitted. The swing plate 10 and the baffle 9 are fixedly connected by the thread pressure. At this time, the swing plate 10 provides stable support for the first adjusting frame 3. If further adjustment is needed, repeat the above steps of unscrewing the nut, changing the adjusting hole 91, and tightening the nut. Through the cooperation of multiple adjusting holes 91 and threaded connecting rods 101, multiple levels of adjustment of the support height of the swing plate 10 can be achieved, which can adapt to the support requirements of the first adjusting frame 3 at different angles and improve the versatility of the support structure.

[0034] like Figure 6 and Figure 8As shown, the handle 5 is rotatably mounted on the second adjusting bracket 4, and also includes a fastener 12. The fastener 12 is rotatably mounted on the second adjusting bracket 4 and can pass through the second adjusting bracket 4 to be threadedly connected to the handle 5. The handle 5 can rotate around the axis of the fastener 12. When it is necessary to adjust the grip direction of the handle 5, rotate the fastener 12 to disengage the fastener 12 from the threaded connection with the handle 5, releasing the lock on the handle 5. Then rotate the handle 5 to adjust it to a comfortable grip direction for the operator. Then rotate the fastener 12 in the opposite direction so that the fastener 12 passes through the second adjusting bracket 4 and is screwed into the threaded hole on the handle 5. The friction force restricts the rotation of the handle 5, thus fixing the handle 5. Through the cooperation of the rotatable handle 5 and the fastener 12, the grip direction of the handle 5 can be adjusted to meet the hand posture and grip habits of different operators, further reducing operator fatigue.

[0035] like Figure 5 and Figure 7 As shown, the frame 1 has an arc-shaped hole 13 and also includes a rotating frame 14. The rotating frame 14 is rotatably mounted on the frame 1. The rotating frame 14 is provided with a pull rod 16, which vertically passes through the arc-shaped hole 13. The wheel 15 is rotatably mounted on the rotating frame 14 and is located at the bottom of the frame 1. The connecting rod can slide along the arc-shaped hole 13 in the horizontal plane to make the wheel 15 turn.

[0036] One end of the limiting plate 17 is hinged to the pull rod 16. The limiting plate 17 is provided with a protrusion 171. The limiting plate 17 can swing until the protrusion 171 abuts against the frame 1 and pulls the pull rod 16 to limit the pull rod 16.

[0037] When it is necessary to adjust the steering of wheel 15 to change the direction of travel of the equipment, the operator first swings the limiting plate 17 upward, so that the limiting plate 17 rotates around the hinge point with the pull rod 16. The protrusion 171 swings away from the frame 1 with the limiting plate 17, releasing the limitation on the pull rod 16. Then the operator pushes the pull rod 16, so that the pull rod 16 slides in the arc hole 13. The sliding of the pull rod 16 drives the rotating frame 14 to rotate synchronously around its rotation axis with the frame 1. The rotating frame 14 drives the bottom wheel 15 to rotate until the wheel 15 turns to the desired direction. At this time, the operator swings the limiting plate 17 downward, so that the protrusion 171 moves closer to the frame 1. The operator pushes the handle 5 to make the equipment move in the adjusted direction. If it is necessary to adjust the steering again, the above operation process of swinging the limiting plate 17 downward, sliding the pull rod 16, and swinging the limiting plate 17 upward can be repeated.

[0038] Specifically, it also includes a flexible pad, which is placed between the bottom of the frame 1 and the rotating frame 14. The flexible pad is in contact with the lower surface of the frame 1 and the upper surface of the rotating frame 14. During steering adjustment, the rotating frame 14 rotates around the rotation axis, which will generate relative movement with the frame 1. The flexible pad can fill the gap between the two and buffer the squeezing force of the rotating frame 14 on the frame 1. When the equipment completes the steering and moves forward, the vibration generated by the operation of the grinding mechanism 2 will cause intermittent squeezing between the rotating frame 14 and the frame 1. The flexible pad can absorb this squeezing impact force, reduce the wear of the contact surface between the frame 1 and the rotating frame 14, protect the structural integrity of both, and extend the service life of the components. The flexible pad can also slightly pull or support the rotating frame 14 through elastic tension or compression deformation, preventing the rotating frame 14 from becoming loose and ensuring that the rotating frame 14 can be kept in the preset installation position.

[0039] Optional, such as Figure 9 As shown, the grinding mechanism 2 includes a grinding tool 21 and grinding elements 22. The grinding tool 21 is mounted on a grinding frame, and the grinding elements 22 are rotatably mounted on the bottom of the grinding tool 21. There are multiple grinding elements 22, which are evenly distributed on the bottom of the grinding tool 21. The simultaneous operation of multiple grinding elements 22 can increase the grinding area per unit time and shorten the work cycle.

[0040] Optionally, a control unit 18 is also included. The control unit 18 is mounted on the second adjustment frame 4 and is used to operate the grinding mechanism 2. The control unit 18 is fixedly mounted on the second adjustment frame 4 near the handle 5, so that the operator can operate synchronously when holding the handle 5. The control unit 18 is connected to the grinding mechanism 2 via a wire or wireless signal and can send control commands such as start, stop, and speed adjustment to the grinding mechanism 2.

[0041] After adjusting the height and deflection angle of handle 5, the operator holds handle 5 while operating control unit 18 with the other hand; pressing the start button on control unit 18 sends a start signal to grinding mechanism 2, and grinding mechanism 2 drives grinding part 22 to rotate to start operation; according to the floor grinding requirements, the rotation speed of grinding part 22 can be adjusted by the speed adjustment button on control unit 18; after the operation is completed, pressing the stop button on control unit 18 stops grinding mechanism 2; during equipment movement, the operator can adjust the state of grinding mechanism 2 at any time through control unit 18 without bending over or leaving handle 5 to operate other control components.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A floor grinding machine, characterized in that, include: Frame (1); A grinding mechanism (2) is mounted on the vehicle frame (1) and is used to grind the floor. The first adjustment frame (3) is hinged at one end to the frame (1); The second adjustment frame (4) is hinged to the other end of the first adjustment frame (3) away from the frame (1). The second adjustment frame (4) is provided with a handle (5) at the end away from the first adjustment frame (3). The second adjustment frame (4) cooperates with the first adjustment frame (3) to adjust the height and deflection angle of the handle (5).

2. The floor grinding machine according to claim 1, characterized in that, Also includes: A locking rod (6) is slidably mounted on the second adjusting frame (4); A snap-fit ​​plate (7) is provided on the second adjusting frame (4) and located at the hinge of the second adjusting frame (4) and the first adjusting frame (3). The snap-fit ​​plate (7) is semi-circular and has a plurality of grooves (71) spaced apart on its outer peripheral wall. The snap-fit ​​rod (6) snaps into the grooves (71). After the second adjusting frame (4) swings relative to the first adjusting frame (3), the snap-fit ​​rod (6) can snap into the grooves (71) so that the second adjusting frame (4) and the first adjusting frame (3) are snapped and fixed.

3. A floor grinding machine according to claim 2, characterized in that, The first adjustment frame (3) is also provided with an elastic element (8). One end of the elastic element (8) is connected to the snap-fit ​​rod (6), and the other end is connected to the hinge of the second adjustment frame (4) and the first adjustment frame (3). The elastic element (8) is used to elastically pull the snap-fit ​​rod (6) so that the snap-fit ​​rod (6) is snapped into the groove (71).

4. A floor grinding machine according to claim 1, characterized in that, Also includes: A baffle (9) is provided on the first adjusting frame (3); The swing plate (10) is hinged on one side of the frame (1) and detachably connected to the baffle (9) on the other side. The swing plate (10) and the baffle (9) cooperate to support the first adjustment frame (3) after the angle is adjusted.

5. A floor grinding machine according to claim 4, characterized in that, The baffle (9) is provided with at least two adjusting holes (91) spaced apart, and the swing plate (10) is provided with a threaded connecting rod (101), which is inserted into the adjusting hole (91). The system also includes: A fastening nut (11) is threadedly connected to the threaded connecting rod (101). After the threaded connecting rod (101) passes through the adjusting hole (91), the fastening nut (11) fixes the threaded connecting rod (101).

6. A floor grinding machine according to claim 1, characterized in that, The handle (5) is rotatably mounted on the second adjusting frame (4), and also includes: Fastener (12) is rotatably mounted on the second adjustment frame (4) and can pass through the second adjustment frame (4) and be threadedly connected to the handle (5).

7. A floor grinding machine according to claim 1, characterized in that, The frame (1) has an arc-shaped hole (13) and also includes: A rotating frame (14) is rotatably mounted on the vehicle frame (1). A pull rod (16) is provided on the rotating frame (14), and the pull rod (16) vertically passes through the arc-shaped hole (13). The wheel (15) is rotatably mounted on the rotating frame (14) and located at the bottom of the frame (1). The pull rod (16) can slide along the arc hole (13) in the horizontal plane to turn the wheel (15).

8. A floor grinding machine according to claim 7, characterized in that, It also includes a limiting plate (17), one end of which is hinged to the pull rod (16). The limiting plate (17) has a protrusion (171) and can swing until the protrusion (171) abuts against the frame (1) to pull the pull rod (16) to limit the pull rod (16).

9. A floor grinding machine according to claim 1, characterized in that, The grinding mechanism (2) includes: A grinding tool (21) is mounted on the frame (1); A grinding element (22) is rotatably disposed at the bottom of the grinding tool (21), and the grinding element (22) is provided in multiple forms.

10. A floor grinding machine according to claim 9, characterized in that, Also includes: A control unit (18) is provided on the second adjustment frame (4) and is used to operate the grinding mechanism (2).

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