Ground trowelling machine with rotatable working face

Abstract

The utility model discloses a ground trowelling machine with a rotatable working face, which relates to the field of trowelling machines and comprises a shell, driving wheels, a driving motor and a polishing disc, the driving wheels are arranged on two sides of one end of the shell, the polishing disc is arranged at the bottom of the shell, the driving motor is connected with the polishing disc through a driven wheel, and a locking column is arranged on the driven wheel. A bearing groove is formed in the top face of the grinding disc, a fisheye bearing is installed in the center of the bearing groove, and the locking column penetrates through an inner ring of the fisheye bearing. During movement, the driving motor drives the driven wheel to rotate, the locking column is sleeved with the inner ring of the fisheye bearing, the outer ring of the fisheye bearing is located in the bearing groove, and the inner ring of the fisheye bearing can rotate relative to the outer ring, so that the grinding disc can rotate to a certain degree through the fisheye bearing; therefore, the working face of the grinding disc can rotate at multiple angles, the degree of freedom is higher, the grinding disc can adapt to more terrains and can be attached to the ground to a greater extent, and the trowelling efficiency can be further improved.

Description

Technical Field

[0001] The utility model belongs to the field of floor smoothing machines, and in particular relates to a floor smoothing machine with a rotatable working surface. Background Art

[0002] A floor trowel is a device used to smooth the newly laid cement floor or tile floor in order to make it smooth and bright. A cement floor trowel is a machine that uses a trowel to smooth the cement surface when the cement is laid but not yet completely solidified.

[0003] Most of the existing floor smoothing machines are directly connected to the grinding disc through a transmission shaft. The grinding disc can only rotate about the axis of the connecting shaft and lacks freedom in other directions. When the existing grinding disc is working, if the grinding disc is at an angle, it often means that the grinding disc is worn or the connecting part is damaged. Therefore, when facing a sloping ground or other situations where the working surface needs to be at an angle with the horizontal plane, the existing floor smoothing machines are often not applicable because the working surface of the grinding disc cannot rotate.

[0004] The same-date application of the present utility model records a floor trowel with a rotatable working surface. The same-date application records part of the technical solutions of the present utility model. However, the same-date application claims protection for the double-head structure of the trowel, which cannot provide effective protection for the technical solutions recorded in the present utility model. Therefore, separate protection is hereby claimed. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model aims to provide a floor leveling machine with a rotatable working surface.

[0006] The technical solution adopted by the utility model is:

[0007] A floor smoothing machine with a rotatable working surface comprises a shell, a driving wheel, a driving motor and a grinding disc. The driving wheels are arranged on both sides of one end of the shell, and a grinding disc is arranged at the bottom of the shell. The driving motor is connected to the grinding disc through a driven wheel, and a locking column is arranged on the driven wheel. A bearing groove is arranged on the top surface of the grinding disc, and a fisheye bearing is installed at the center of the bearing groove. The locking column passes through the inner ring of the fisheye bearing. A locking groove is opened on the bottom surface of the grinding disc, and a locking piece is installed in the locking groove. One end of the locking piece passes through the locking groove and is connected to the locking column.

[0008] Preferably, a connecting flange is installed on the driven wheel, a locking column is arranged on the supporting column, transmission rods are arranged on both sides of the top of the supporting column, a locking hole is opened in the center of the locking column, and a locking piece is located in the locking hole.

[0009] Preferably, the bearing groove protrudes beyond the top wall of the grinding disc, positioning notches are provided on both sides of the bearing groove, and the transmission rod is located in the positioning notches.

[0010] Preferably, a linkage shaft is provided at one end of the bottom surface of the shell, and two grinding discs are arranged side by side at the other end of the bottom surface of the shell. The two grinding discs are hingedly connected to the linkage shaft so that the grinding surface of the grinding disc can rotate around the linkage shaft.

[0011] Preferably, the driving wheels on both sides of the shell are rotatably mounted on a fixed shaft, a push rod is mounted on the fixed shaft, and the fixed shaft is connected to the linkage shaft via a connecting rib.

[0012] Preferably, two linkage plates are arranged in parallel at the bottom of the shell, and both linkage plates are rotatably mounted on the linkage shaft, and the driving motor and the grinding disc are mounted on the linkage plates.

[0013] Preferably, a driving wheel and a driven wheel are provided on the linkage plate, the driving motor is transmission-connected to the driving wheel, the driving wheel and the driven wheel are connected via a synchronous belt, and the grinding disc is mounted on the driven wheel.

[0014] Preferably, bearing seats are provided on both sides of the bottom surface of the linkage plate, and the linkage shaft is installed in the bearing seats.

[0015] Preferably, a height adjustment mechanism is provided on the shell, the height adjustment mechanism is connected to the fixed shaft, and the height adjustment mechanism is used to adjust the distance between the grinding disc and the ground.

[0016] Preferably, the height adjustment mechanism comprises a transmission plate, an articulated ball and a threaded rod, wherein the transmission plate is hingedly connected to the articulated ball; one end of the threaded rod is installed in the articulated ball, and the other end is connected to the housing.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a floor smoothing machine with a rotatable working surface, including a shell, a driving wheel, a driving motor and a grinding disc, the driving wheels are arranged on both sides of one end of the shell, the grinding disc is arranged at the bottom of the shell, the driving motor is connected to the grinding disc through a driven wheel, a locking column is arranged on the driven wheel, a bearing groove is arranged on the top surface of the grinding disc, a fisheye bearing is installed at the center of the bearing groove, the locking column passes through the inner ring of the fisheye bearing, a locking groove is opened on the bottom surface of the grinding disc, a locking piece is installed in the locking groove, and one end of the locking piece passes through the locking groove and is connected to the locking column. During movement, the driving motor drives the driven wheel to rotate, the inner ring of the fisheye bearing is sleeved on the locking column, the outer ring of the fisheye bearing is located in the bearing groove, and the inner ring of the fisheye bearing can rotate compared to the outer ring. Therefore, the grinding disc can also be rotated to a certain extent through the fisheye bearing, so that the working surface of the grinding disc can be rotated at multiple angles, with a higher degree of freedom, can adapt to more terrains, can fit the ground to a greater extent, and can further improve the smoothing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the bottom of the utility model.

[0021] Figure 3 Schematic diagram of the structure of the height adjustment mechanism.

[0022] Figure 4 It is a schematic diagram of the installation position of the height adjustment mechanism.

[0023] Figure 5 It is a schematic diagram of the installation structure of the grinding disc.

[0024] Figure 6 yes Figure 5 A magnified schematic diagram of area A in the middle.

[0025] Figure 7 It is a schematic diagram of the connection structure between the driven wheel and the grinding disc.

[0026] Figure 8 It is a structural schematic diagram of the top surface of the grinding disc.

[0027] Fig. 9 It is a schematic diagram of the structure of the bottom surface of the grinding disc.

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the grinding disc.

[0029] In the figure: 1-housing, 2-driving motor, 21-driving wheel, 22-synchronous belt, 23-driven wheel, 3-electric control box, 4-driving wheel, 41-push rod, 411-push rod groove, 42-fixed shaft, 5-linkage plate, 51-bearing seat, 52-linkage shaft, 53-connecting ribs, 6-height adjustment mechanism, 61-transmission plate, 62-hinged ball, 63-threaded rod, 64-bow frame, 65-handle, 7-connecting flange, 71-support column, 72-locking column, 721-fastening hole, 73-transmission rod, 74-limiting column, 75-buffer spring, 8-grinding disc, 81-bearing groove, 82-positioning notch, 83-fisheye bearing, 84-locking groove, 85-locking piece. DETAILED DESCRIPTION

[0030] In this embodiment, if Figures 1 to 10A floor smoothing machine with a rotatable working surface is shown, which includes a housing 1, a driving wheel 4, a driving motor 2 and a grinding disc 8. The driving wheel 4 is arranged on both sides of one end of the housing 1, and the driving motor 2 is connected to the grinding disc 8 in a transmission manner. A linkage shaft 52 is arranged at one end of the bottom surface of the housing 1, and two grinding discs 8 are arranged in parallel at the other end of the bottom surface of the housing 1. The two grinding discs 8 are both hingedly connected to the linkage shaft 52, so that the grinding surface of the grinding disc 8 can be rotated around the linkage shaft 52. The utility model is provided with two grinding discs 8, and the two grinding discs 8 are independent of each other on the linkage shaft 52 but can rotate around the linkage shaft 52. When working, if the ground is uneven, the two grinding discs 8 can work independently of each other, so as to adapt to the changes of the working surface, and then better fit with the working surface, and the work efficiency is higher. At the same time, the wear of the grinding disc 8 caused by the fluctuation of the working surface can also be effectively reduced, and the service life is longer. Compared with the prior art, the utility model has a higher degree of fit with the working surface, so that the grinding effect is better, the scope of application is wider, the work efficiency is higher and the service life is longer.

[0031] In this embodiment, if Figure 1 As shown, an electric control box 3 is also provided on the shell 1, and the electric control box 3 is electrically connected to the drive motor 2. The electric control box 3 is provided with control buttons, which can control the opening, closing and speed adjustment of the drive motor 2. At the same time, the two drive motors 2 can be controlled to work simultaneously or separately.

[0032] In this embodiment, if Figures 1 to 4 As shown, the driving wheels 3 on both sides of the housing 1 are rotatably mounted on the fixed shaft 42, a push rod 41 is mounted on the fixed shaft 42, and the fixed shaft 42 is connected to the linkage shaft 52 through a connecting rib 53. The push rod 41 is installed in a push rod groove 411, and the push rod groove 411 passes through the housing 1. Push rods are installed at both ends of the fixed shaft 42, and the push rods 41 at both ends of the fixed shaft 42 pass through the push rod groove 411 and meet above the housing 1.

[0033] In this embodiment, if Figures 1 to 5As shown, two linkage plates 5 are arranged side by side at the bottom of the housing 1, and both linkage plates 5 can be rotatably mounted on the linkage shaft 52, and the driving motor 2 and the grinding disc 8 are mounted on the linkage plates 5. Specifically, bearing seats 51 are arranged on both sides of the bottom surface of the linkage plate 5, and the linkage shaft 52 is mounted in the bearing seats 51. A driving wheel 21 and a driven wheel 23 are arranged on the linkage plate 5, and the driving motor 2 is connected to the driving wheel 21 in transmission, and the driving wheel 21 and the driven wheel 23 are connected through a synchronous belt 22, and the grinding disc 8 is mounted on the driven wheel 23. The driving motor 2 drives the driving wheel 21 to rotate, and the driving wheel 21 drives the driven wheel 23 to rotate synchronously through the synchronous belt 22, thereby driving the grinding disc. When the working surface heights of the two linkage plates 5 are inconsistent, the linkage plate 5 will rotate around the linkage shaft 52 under the impetus of the ground height difference, so that the two linkage plates 5 produce relative rotation, so that the grinding disc 8 can adapt to working surfaces of different heights.

[0034] In this embodiment, if Figures 1 to 10 As shown, a connecting flange 7 is installed on the driven wheel 23, a support column 71 is arranged at the center of the connecting flange 7, transmission rods 73 are arranged on both sides of the top of the support column 71, a locking column 72 is arranged at the center of the top of the support column 71, the outer diameter of the locking column 72 is smaller than the support column 71, and a locking hole 721 is opened in the center of the locking column 72.

[0035] In this embodiment, the top surface of the grinding disc 8 is provided with a bearing groove 81 protruding beyond the top wall, positioning notches 82 are provided on both sides of the bearing groove 81, a fisheye bearing 83 is installed in the center of the bearing groove 81, and a locking groove 84 is provided on the bottom surface of the grinding disc 8. The locking groove 84 is connected to the bearing groove 81, but the inner diameter of the locking groove 82 is smaller than the outer ring of the fisheye bearing 83, and a locking piece 85 is installed in the locking groove 84.

[0036] During installation, the support column 71 is connected to the bearing groove 81, and the locking column 72 passes through the inner ring of the fisheye bearing 83 and is connected to the locking member 85. The locking member 85 is a cap bolt or a cap screw. The locking hole 721 is a threaded hole. The threaded part of the locking member 85 passes through the locking groove 84 and is connected to the locking hole 72. The other part of the locking member 85 is located in the locking groove 84. The transmission rod 73 is located in the positioning notch 82.

[0037] During the movement, when the driving motor 2 drives the driven wheel 23 to rotate, the transmission rod 73 drives the grinding disc 8 to rotate through the positioning notch 82. At the same time, the inner ring of the fisheye bearing 83 is mounted on the locking column 73, and the outer ring of the fisheye bearing 83 is located in the bearing groove 81. The inner ring of the fisheye bearing 83 can rotate relative to the outer ring. Therefore, the grinding disc 8 can also rotate to a certain extent with the transmission rod 73 as the axis, so that the working surface of the grinding disc 8 can rotate at multiple angles, with a higher degree of freedom, can adapt to more terrains, can fit the ground to a greater extent, and can further improve the leveling efficiency.

[0038] In other embodiments, the fisheye bearing 83 can be replaced by a universal joint. When the universal joint is used, one end of the universal joint can be directly fixed on the grinding disc 8, and the other end can be directly connected to the locking column 72.

[0039] In this embodiment, if Figures 1 to 5 As shown, a height adjustment mechanism 6 is provided on the housing 1, and the height adjustment mechanism 6 is connected to the fixed shaft 42, and the height adjustment mechanism 6 is used to adjust the distance between the grinding disc 8 and the ground. The height adjustment mechanism 6 includes a transmission plate 61, a hinge ball 62 and a threaded rod 63, and the transmission plate 61 is hingedly connected to the hinge ball 62; one end of the threaded rod 63 is rotatably installed in the hinge ball 62, and the other end is connected to the housing 1. The height adjustment mechanism 6 also includes a bow frame 64 and a handle 65, the bow frame 64 is installed on the top surface of the housing 1, and a threaded hole is provided on the bow frame 64, the threaded rod 63 passes through the housing 1 and is threadedly connected to the bow frame 64, and the other end of the threaded rod 63 is installed with a handle 65. When in use, by twisting the handle 65, the threaded rod 64 can be moved up and down along the bow frame 64, so that the end of the transmission plate 61 connected to the hinge ball 62 can move up and down. At the same time, since the transmission plate 61 is set on the fixed shaft 42, the fixed shaft 42 and the linkage shaft 52 are connected as a whole. Therefore, when adjusting the transmission plate 61, the end of the linkage plate 5 away from the linkage shaft 52 is tilted or sunk.

[0040] In this embodiment, if Figures 1 to 10 As shown, a plurality of limit columns 74 are arranged on the connecting flange 7, and the plurality of limit columns 74 are arranged around the supporting column 71. A buffer spring 75 is mounted on the outer surface of the supporting column 71. When facing an uneven ground, the two ends of the buffer spring 75 respectively press against the connecting flange 7 and the grinding disc 8. When the grinding disc 8 faces an uneven ground, the buffer spring 75 can make the force on the grinding disc 8 more uniform, which can effectively improve the grinding efficiency and prevent uneven force and inadequate grinding.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A floor smoothing machine with a rotatable working surface, comprising a housing (1), a driving wheel (4), a driving motor (2) and a grinding disc (8), wherein the driving wheels (4) are arranged on both sides of one end of the housing (1), a grinding disc (8) is arranged at the bottom of the housing (1), and the driving motor (2) is connected to the grinding disc (8) via a driven wheel (23), characterized in that: The driven wheel (23) is provided with a locking column (72), the top surface of the grinding disc (8) is provided with a bearing groove (81), a fisheye bearing (83) is installed at the center of the bearing groove (81), the locking column (72) passes through the inner ring of the fisheye bearing (83), the bottom surface of the grinding disc (8) is provided with a locking groove (84), a locking piece (85) is installed in the locking groove (84), and one end of the locking piece (85) passes through the locking groove (84) and is connected to the locking column (72).

2. A floor trowel with a rotatable working surface according to claim 1, characterized in that: A connecting flange (7) is installed on the driven wheel (23), the locking column (72) is arranged on the supporting column (71), transmission rods (73) are arranged on both sides of the top of the supporting column (71), a locking hole (721) is opened at the center of the locking column (72), and the locking piece (85) is located in the locking hole (721).

3. A floor trowel with a rotatable working surface according to claim 2, characterized in that: The bearing groove (81) protrudes out of the top wall of the grinding disc (8), and positioning notches (82) are provided on both sides of the bearing groove (81), and the transmission rod (73) is located in the positioning notches (82).

4. A floor trowel with a rotatable working surface according to claim 1, characterized in that: A linkage shaft (52) is arranged at one end of the bottom surface of the shell (1), and two grinding discs (8) are arranged in parallel at the other end of the bottom surface of the shell (1). The two grinding discs (8) are both hingedly connected to the linkage shaft (52), so that the grinding surfaces of the grinding discs (8) can rotate with the linkage shaft (52) as the axis.

5. A floor trowel with a rotatable working surface according to claim 4, characterized in that: The driving wheels (4) on both sides of the housing (1) are rotatably mounted on a fixed shaft (42), a push rod (41) is mounted on the fixed shaft (42), and the fixed shaft (42) is connected to a linkage shaft (52) via a connecting rib (53).

6. A floor trowel with a rotatable working surface according to claim 4, characterized in that: Two linkage plates (5) are arranged in parallel at the bottom of the housing (1); both linkage plates (5) are rotatably mounted on a linkage shaft (52); and the drive motor (2) and the grinding disc (8) are mounted on the linkage plates (5).

7. A floor trowel with a rotatable working surface according to claim 6, characterized in that: A driving wheel (21) and a driven wheel (23) are arranged on the linkage plate (5); the driving motor (2) is transmission-connected to the driving wheel (21); the driving wheel (21) and the driven wheel (23) are connected via a synchronous belt (22); and the grinding disc (8) is mounted on the driven wheel (23).

8. A floor trowel with a rotatable working surface according to claim 6, characterized in that: Bearing seats (51) are provided on both sides of the bottom surface of the linkage plate (5), and the linkage shaft (52) is installed in the bearing seats (51).

9. A floor trowel with a rotatable working surface according to claim 5, characterized in that: The housing (1) is provided with a height adjustment mechanism (6), the height adjustment mechanism (6) is connected to the fixed shaft (42), and the height adjustment mechanism (6) is used to adjust the distance between the grinding disc (8) and the ground.

10. A floor trowel with a rotatable working surface according to claim 9, characterized in that: The height adjustment mechanism (6) comprises a transmission plate (61), a hinge ball (62) and a threaded rod (63), wherein the transmission plate (61) is hinge-connected to the hinge ball (62); One end of the threaded rod (63) is installed in the hinge ball (62), and the other end is connected to the housing (1).

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