Coaxial reverse terrace machine and millstone assembly thereof

Abstract

The invention relates to the technical field of building construction equipment, and discloses a coaxial reverse floor machine and a grinding disc assembly thereof. A circular groove is formed in the middle of the outer millstone, the inner millstone is located in the circular groove, and the bottom surface of the inner millstone is flush with the bottom surface of the outer millstone; the driving part is used for driving the inner millstone to rotate in the first direction and the outer millstone to rotate in the second direction; wherein the first direction is opposite to the second direction, and the rotating shaft of the inner millstone and the rotating shaft of the outer millstone are coaxially arranged. According to the millstone assembly, by arranging the inner millstone and the outer millstone, when the driving piece drives the inner millstone to rotate in the first direction and drives the outer millstone to rotate in the second direction, the first direction is opposite to the second direction, and the rotating shaft of the inner millstone and the rotating shaft of the outer millstone are coaxially arranged; therefore, the direction of the friction force generated by the inner millstone and the ground is opposite to that of the friction force generated by the outer millstone and the ground, and the two millstones can counter each other to effectively reduce deflection force.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment technology, and in particular to a coaxial reverse flooring machine and its grinding disc assembly. Background Technology

[0002] Currently, in order to improve the flatness and aesthetics of the ground, coaxial reverse flooring machines are often used to treat concrete, epoxy flooring and other surfaces, using high-speed rotating grinding discs to achieve grinding, polishing or renovation.

[0003] However, during construction, the grinding disc of a coaxial reverse-rotating flooring machine rotates at high speed, and the resulting bias force causes the equipment's travel trajectory to deviate, seriously affecting the construction quality and efficiency. Summary of the Invention

[0004] One of the technical problems solved by this invention is to provide a grinding disc assembly for a coaxial reverse-rotating flooring machine, which can effectively reduce the bias force, thereby reducing the possibility of the equipment's travel trajectory deviating.

[0005] The second technical problem solved by this invention is to provide a coaxial reverse-direction flooring machine that can effectively reduce the bias force, thereby reducing the possibility of the equipment's travel trajectory deviating.

[0006] The first technical problem mentioned above is solved by the following technical solution: a grinding disc assembly for a coaxial reverse-rotating floor mill, comprising: The inner grinding disc is circular. The outer grinding disc has a circular groove in the middle, and the inner grinding disc is located in the circular groove. The bottom surface of the inner grinding disc is flush with the bottom surface of the outer grinding disc. A driving component, used to drive the inner grinding disc to rotate in a first direction and the outer grinding disc to rotate in a second direction; The first direction is opposite to the second direction, and the rotation axis of the inner grinding disc is coaxial with the rotation axis of the outer grinding disc.

[0007] The grinding disc assembly of the coaxial reverse-rotating flooring machine of the present invention has the following advantages compared with the prior art: The grinding disc assembly of the present invention comprises an inner grinding disc and an outer grinding disc, with the inner grinding disc positioned in a circular groove in the center of the outer grinding disc. When the driving component drives the inner grinding disc to rotate in a first direction and drives the outer grinding disc to rotate in a second direction, since the first direction is opposite to the second direction and the rotation axis of the inner grinding disc is coaxial with that of the outer grinding disc, the direction of the frictional force generated between the inner grinding disc and the ground is opposite to the direction of the frictional force generated between the outer grinding disc and the ground. The two forces can counteract each other, effectively reducing the bias force and thus reducing the possibility of deviation of the equipment's travel trajectory.

[0008] Furthermore, the linear velocity of the inner grinding disc rotating in the first direction is equal to the linear velocity of the outer grinding disc rotating in the second direction.

[0009] Furthermore, there is a clearance fit between the inner and outer grinding discs.

[0010] Furthermore, the driving component includes a first driving shaft and a second driving shaft arranged coaxially, with the second driving shaft being hollow. The first drive shaft passes through the second drive shaft and the outer grinding disc and connects to the inner grinding disc to drive the inner grinding disc to rotate in the first direction; The second drive shaft is used to drive the outer grinding disc to rotate in the second direction.

[0011] Furthermore, the outer grinding disc includes an annular grinding disc, a groove sidewall extending upward along the inner sidewall of the grinding disc, and a top plate connected to the top of the groove sidewall; The second drive shaft is connected to the top plate to drive the outer grinding disc to rotate in the second direction; The space between the sidewalls and the top plate of the groove forms a circular groove.

[0012] Furthermore, a first driven gear extends circumferentially from the side wall of the first drive shaft, and a second driven gear extends circumferentially from the side wall of the second drive shaft; the drive component also includes a drive motor, a drive gear, and an intermediate gear, wherein the drive motor is used to drive the drive gear to rotate, and the drive gear meshes with the intermediate gear; One of the first driven gear and the second driven gear meshes with the driving gear, and the other meshes with the intermediate gear, so that the first direction is opposite to the second direction.

[0013] Furthermore, the outer diameter of the inner grinding disc is r1, the outer diameter of the outer grinding disc is r2, and the gear ratio of the first driven gear and the second driven gear is r2 / r1.

[0014] Furthermore, there is a gap region between a portion of the outer wall of the first drive shaft and a portion of the inner wall of the second drive shaft, and a bearing is installed in the gap region.

[0015] Furthermore, the bottom of both the inner and outer grinding discs are provided with the same number of friction elements at even intervals along the circumference.

[0016] The second technical problem mentioned above is solved by the following technical solution: a coaxial reverse flooring machine, comprising: a grinding disc assembly and a housing according to any of the above embodiments, wherein the bottom of the housing is provided with an opening, and the outer grinding disc and the inner grinding disc are located inside the housing and exposed through the opening.

[0017] The coaxial reverse-flow flooring machine of the present invention has the following advantages compared with the prior art: The coaxial reverse-rotation flooring machine of the present invention has an inner grinding disc and an outer grinding disc in the grinding disc assembly, with the inner grinding disc placed in a circular groove in the middle of the outer grinding disc. When the driving component drives the inner grinding disc to rotate in a first direction and drives the outer grinding disc to rotate in a second direction, since the first direction is opposite to the second direction and the rotation axis of the inner grinding disc is coaxial with the rotation axis of the outer grinding disc, the direction of the friction force generated between the inner grinding disc and the ground is opposite to the direction of the friction force generated between the outer grinding disc and the ground. The two can counteract each other, effectively reducing the bias force, thereby reducing the possibility of the equipment's travel trajectory deviating. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a coaxial reverse-flow flooring machine provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of an inner grinding disc and an outer grinding disc provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the assembly of the inner and outer grinding discs according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a grinding disc assembly provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of a grinding disc assembly provided in an embodiment of the present invention; Figure 6 This is a front view of a grinding disc assembly provided in an embodiment of the present invention; Figure 7 yes Figure 6 A cross-sectional view at point AA.

[0020] Label Explanation: 10. Inner grinding disc; 20. Outer grinding disc; 21. Circular groove; 22. Grinding disc; 23. Groove sidewall; 24. Top plate; 30. Driving component; 31. First drive shaft; 311. First driven gear; 32. Second drive shaft; 321. Second driven gear; 33. Drive motor; 34. Driving gear; 35. Intermediate gear; 36. Bearing; 1. Friction component; 100. Housing; 101. Opening. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 application based on the specific circumstances.

[0025] See Figures 1-7 , Figure 1 A schematic diagram of a coaxial reverse-flow flooring machine according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of an inner grinding disc and an outer grinding disc provided in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the assembly of the inner and outer grinding discs according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a grinding disc assembly provided in an embodiment of the present invention is shown; Figure 5 A schematic diagram of a grinding disc assembly provided in an embodiment of the present invention is shown; Figure 6 A front view of a grinding disc assembly provided in an embodiment of the present invention is shown; Figure 7 It shows Figure 6 A cross-sectional view at point AA.

[0026] refer to Figures 2-7 The present invention provides a grinding disc assembly for a coaxial reverse-rotating flooring machine, comprising: an inner grinding disc 10, which is circular; an outer grinding disc 20, wherein a circular groove 21 is provided in the center of the outer grinding disc 20, the inner grinding disc 10 is located in the circular groove 21, and the bottom surface of the inner grinding disc 10 is flush with the bottom surface of the outer grinding disc 20; and a driving member 30, which is used to drive the inner grinding disc 10 to rotate along a first direction and the outer grinding disc 20 to rotate along a second direction; wherein the first direction is opposite to the second direction, and the rotation axis of the inner grinding disc 10 and the rotation axis of the outer grinding disc 20 are coaxially arranged.

[0027] Specifically, the driving component 30 can be a drive motor that simultaneously drives the inner grinding disc 10 and the outer grinding disc 20 to rotate via a gear combination. Regardless of the driving method, it is important to emphasize in this embodiment that the driving directions of the inner grinding disc 10 and the outer grinding disc 20 are different. The inner grinding disc 10 is driven in a first direction, and the outer grinding disc 20 in a second direction. In one embodiment, the first direction can be clockwise and the second direction can be counterclockwise; in another embodiment, the first direction can be counterclockwise and the second direction can be clockwise.

[0028] It should be noted that the direction of the friction force generated between the inner grinding disc 10 and the ground is opposite to the direction of rotation of the inner grinding disc 10, which is the second direction. The direction of the friction force generated between the outer grinding disc 20 and the ground is opposite to the direction of rotation of the outer grinding disc 20, which is the first direction. Since the rotation axis of the inner grinding disc 10 and the rotation axis of the outer grinding disc 20 are coaxial, the first direction and the second direction are also coaxial clockwise and counterclockwise directions, and the resistance between the two can easily reach a balance.

[0029] In this embodiment, the grinding disc assembly consists of an inner grinding disc 10 and an outer grinding disc 20. The inner grinding disc 10 is placed in the circular groove 21 in the middle of the outer grinding disc 20. When the driving member 30 drives the inner grinding disc 10 to rotate in the first direction and drives the outer grinding disc 20 to rotate in the second direction, since the first direction is opposite to the second direction and the rotation axis of the inner grinding disc 10 is coaxial with the rotation axis of the outer grinding disc 20, the direction of the friction force generated between the inner grinding disc 10 and the ground is opposite to the direction of the friction force generated between the outer grinding disc 20 and the ground. The two can counteract each other, effectively reducing the bias force and thus reducing the possibility of the equipment's travel trajectory deviating.

[0030] In one embodiment, the linear velocity of the inner grinding disc 10 rotating in the first direction is equal to the linear velocity of the outer grinding disc 20 rotating in the second direction.

[0031] It is understandable that when the inner grinding disc 10 or the outer grinding disc 20 rotates relative to the ground, sliding friction will be generated at the contact point, hindering the rotation of the object. Due to the high-speed rotation of the inner grinding disc 10 or the outer grinding disc 20, a large amount of heat and ground abrasion will be generated, affecting the coefficient of friction. Therefore, by setting the linear velocity to the same magnitude, it helps to make the friction generated by both discs equal, thereby achieving a balance in the friction generated by both discs, further reducing the bias force, and thus reducing the possibility of the equipment's travel trajectory deviating.

[0032] In one embodiment, the inner grinding disc 10 and the outer grinding disc 20 are fitted with a clearance.

[0033] Understandably, since the inner grinding disc 10 and the outer grinding disc 20 rotate in opposite directions, a clearance fit between them can prevent friction and reduce energy waste. Furthermore, the clearance between the inner grinding disc 10 and the outer grinding disc is no more than 1 mm to prevent small stones generated during grinding from entering the circular groove 21.

[0034] In one embodiment, reference Figures 4-7 The driving component 30 includes a first driving shaft 31 and a second driving shaft 32 coaxially arranged, with the second driving shaft 32 being hollow. The first driving shaft 31 passes through the second driving shaft 32 and the outer grinding disc 20 and is connected to the inner grinding disc 10 to drive the inner grinding disc 10 to rotate in a first direction. The second driving shaft 32 is used to drive the outer grinding disc 20 to rotate in a second direction.

[0035] Specifically, a threaded hole is provided at the bottom of the first drive shaft 31, and a small hole is provided at the center of the inner grinding disc 10. A screw is threaded through the small hole and fastened to the threaded hole to complete the connection between the first drive shaft 31 and the inner grinding disc 10. For example, the second drive shaft 32 can be integrally formed with the outer grinding disc 20.

[0036] Specifically, the outer grinding disc 20 and the inner grinding disc 10 can be driven by the drive motors that drive the first drive shaft 31 and the second drive shaft 32 to rotate respectively.

[0037] In one embodiment, reference Figure 2 and Figure 7 The outer grinding disc 20 includes an annular grinding disc 22, a groove sidewall 23 extending upward along the inner sidewall of the grinding disc 22, and a top plate 24 connected to the top of the groove sidewall 23; the second drive shaft 32 is connected to the top plate to drive the outer grinding disc 20 to rotate in a second direction; the space between the groove sidewall 23 and the top plate 24 forms a circular groove 21.

[0038] In one embodiment, a first driven gear 311 extends circumferentially from the sidewall of the first drive shaft 31, and a second driven gear 321 extends circumferentially from the sidewall of the second drive shaft 32. The drive member 30 also includes a drive motor 33, a drive gear 34, and an intermediate gear 35. The drive motor is used to drive the drive gear 34 to rotate, and the drive gear 34 meshes with the intermediate gear 35. One of the first driven gear 311 and the second driven gear 321 meshes with the drive gear 34, and the other meshes with the intermediate gear 35, so that the first direction is opposite to the second direction.

[0039] Understandably, through the interaction of the driving gear 34, intermediate gear 35, first driven gear 311, and second driven gear 321, only one drive motor 33 is needed to control the different rotation directions of the inner grinding disc 10 and the outer grinding disc 20. Furthermore, after the drive motor 33 starts, the inner grinding disc 10 and the outer grinding disc 20 can rotate simultaneously, further preventing deviation caused by the difference in their starting timing.

[0040] In one embodiment, the outer diameter of the inner grinding disc 10 is r1, the outer diameter of the outer grinding disc 20 is r2, and the gear ratio of the first driven gear 311 and the second driven gear 321 is r2 / r1.

[0041] It is understandable that, since linear velocity is equal to the product of angular velocity and radius, if the linear velocity of the inner grinding disc 10 is to be equal to the linear velocity of the outer grinding disc 20, then by setting the gear ratio of the first driven gear 311 and the second driven gear 321 to r2 / r1, the angular ratio of the first driven gear 311 and the second driven gear 321 to r2 / r1, the linear velocities of the inner grinding disc 10 and the outer grinding disc can be the same.

[0042] In one embodiment, there is a gap region between a portion of the outer wall of the first drive shaft 31 and a portion of the inner wall of the second drive shaft 32, and a bearing 36 is installed in the gap region.

[0043] Specifically, the rotation directions of the first drive shaft 31 and the second drive shaft 32 are opposite. By providing a bearing 36 in the interval between the two, the friction between the first drive shaft 31 and the second drive shaft 32 can be further reduced, so as to avoid affecting the rotation of the inner grinding disc 10 and the outer grinding disc 20 and thus avoid energy waste.

[0044] In one embodiment, reference Figure 3 Both the bottom of the inner grinding disc 10 and the bottom of the outer grinding disc 20 are provided with the same number of friction elements 1 evenly spaced along the circumference.

[0045] It is understandable that by setting the same number of friction components 1, the difference in friction between the two can be further reduced, thus further preventing deviation.

[0046] refer to Figure 1-7 The present invention also provides a coaxial reverse flooring machine, comprising: a grinding disc assembly and a housing 100 according to any of the above embodiments, wherein the bottom of the housing is provided with an opening 101, and the outer grinding disc 20 and the inner grinding disc 10 are located inside the housing 100 and exposed through the opening 101.

[0047] In this embodiment, the coaxial reverse-rotating flooring machine uses an inner grinding disc 10 and an outer grinding disc 20 in the grinding disc assembly. The inner grinding disc 10 is placed in a circular groove 21 in the middle of the outer grinding disc 20. When the driving member 30 drives the inner grinding disc 10 to rotate in a first direction and drives the outer grinding disc 20 to rotate in a second direction, since the first direction is opposite to the second direction and the rotation axis of the inner grinding disc 10 is coaxial with the rotation axis of the outer grinding disc 20, the friction force generated between the inner grinding disc 10 and the ground is opposite to the friction force generated between the outer grinding disc 20 and the ground. The two can counteract each other, effectively reducing the bias force and thus reducing the possibility of the equipment's travel trajectory deviating.

[0048] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0049] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A grinding disc assembly for a coaxial reverse-rotating flooring machine, characterized in that, include: Inner grinding disc (10), wherein the inner grinding disc (10) is circular; The outer grinding disc (20) has a circular groove (21) in the middle, and the inner grinding disc (10) is located in the circular groove (21). The bottom surface of the inner grinding disc (10) is flush with the bottom surface of the outer grinding disc (20). A driving element (30) is used to drive the inner grinding disc (10) to rotate in a first direction and the outer grinding disc (20) to rotate in a second direction; Wherein, the first direction is opposite to the second direction, and the rotation axis of the inner grinding disc (10) is coaxial with the rotation axis of the outer grinding disc (20).

2. The grinding disc assembly according to claim 1, characterized in that, The linear velocity of the inner grinding disc (10) rotating in the first direction is equal to the linear velocity of the outer grinding disc (20) rotating in the second direction.

3. The grinding disc assembly according to claim 1, characterized in that, The inner grinding disc (10) and the outer grinding disc (20) are fitted with a clearance.

4. The grinding disc assembly according to claim 1, characterized in that, The drive unit (30) includes a first drive shaft (31) and a second drive shaft (32) arranged coaxially, wherein the second drive shaft (32) is hollow. The first drive shaft (31) passes through the second drive shaft (32) and the outer grinding disc (20) and is connected to the inner grinding disc (10) to drive the inner grinding disc (10) to rotate in a first direction; The second drive shaft (32) is used to drive the outer grinding disc (20) to rotate in the second direction.

5. The grinding disc assembly according to claim 4, characterized in that, The outer grinding disc (20) includes an annular grinding disc (22), a groove sidewall (23) extending upward along the inner sidewall of the grinding disc (22), and a top plate (24) connected to the top of the groove sidewall (23). The second drive shaft (32) is connected to the top plate to drive the outer grinding disc (20) to rotate in the second direction; The space between the sidewall (23) of the groove and the top plate (24) forms the circular groove (21).

6. The grinding disc assembly according to claim 4, characterized in that, The first drive shaft (31) has a first driven gear (311) extending circumferentially from its sidewall, and the second drive shaft (32) has a second driven gear (321) extending circumferentially from its sidewall; the drive member (30) also includes a drive motor (33), a drive gear (34) and an intermediate gear (35), the drive motor being used to drive the drive gear (34) to rotate, and the drive gear (34) meshing with the intermediate gear (35); One of the first driven gear (311) and the second driven gear (321) meshes with the driving gear (34), and the other meshes with the intermediate gear (35) so that the first direction is opposite to the second direction.

7. The grinding disc assembly according to claim 6, characterized in that, The outer diameter of the inner grinding disc (10) is r1, the outer diameter of the outer grinding disc (20) is r2, and the gear ratio of the first driven gear (311) and the second driven gear (321) is r2 / r1.

8. The grinding disc assembly according to claim 6, characterized in that, There is a gap between a portion of the outer wall of the first drive shaft (31) and a portion of the inner wall of the second drive shaft (32), and a bearing (36) is installed in the gap.

9. The grinding disc assembly according to any one of claims 1-8, characterized in that, The bottom of the inner grinding disc (10) and the bottom of the outer grinding disc (20) are both provided with the same number of friction elements (1) evenly spaced along the circumference.

10. A coaxial reverse-rotating flooring machine, characterized in that, include: The grinding disc assembly and housing (100) as described in any one of claims 1-9, wherein the bottom of the housing (100) is provided with an opening (101), and the outer grinding disc (20) and the inner grinding disc (10) are located inside the housing (100) and exposed through the opening (101).

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