Portable floor polishing machine

Abstract

The utility model relates to the technical field of terrace polishing machines, and discloses a portable terrace polishing machine which comprises a mounting rack and an extension handle, the extension handle is movably connected with the upper side of the mounting rack, a driver is fixedly mounted on the upper side of the mounting rack, a connecting base plate is rotatably mounted on the lower side of the mounting rack, and the connecting base plate is connected with the extension handle. The driving machine drives the connecting base plate to rotate, a plurality of connecting shafts are rotationally installed in the connecting base plate, a detachable grinding disc is installed at the bottom end of each connecting shaft, and a transmission gear is fixedly installed at the top end of each connecting shaft. According to the floor polishing machine, a plurality of connecting shafts are arranged on a connecting base plate, a grinding disc is arranged at the bottom end of each connecting shaft, the grinding discs are arranged in an annular array mode, and a driving machine drives the connecting base plate to rotate and drives all the grinding discs to rotate and do annular motion at the same time; and the grinding efficiency is improved through annular movement, and the effects of convenient operation and efficient grinding are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor polishing machines, in particular to a portable floor polishing machine. Background Art

[0002] A floor grinder, also known as a terrazzo machine, is a construction machine equipped with a rotating grinding disc for polishing terrazzo floors. It is a mechanical equipment used for slurry extraction, leveling and polishing of cement concrete surfaces. For example, the prior art publication number CN219504348U discloses a high-efficiency floor grinder for floor engineering construction, comprising a box body, a baffle fixedly connected to the bottom of the box body, two rotating shaft seats fixedly connected to the bottom of the box body, a rotating shaft plate is arranged between the two rotating shaft seats, a through hole is opened on the side of the rotating shaft plate, and a rotating shaft rod is fixedly connected between the two rotating shaft seats. The floor engineering construction uses a high-efficiency floor grinder. When encountering a large protrusion, the bottom of the pivot plate is blocked, the box moves forward, the pivot plate will rotate around the pivot seat, the bottom of the box will rise, and a baffle is provided at the bottom of the box. When the pivot plate rotates next to the baffle, it stops rotating. A roller is provided at the bottom of the pivot plate. The roller moves forward when it touches the ground, and the large protrusion reaches the bottom of the polishing wheel, and contacts well with the polishing disc at the bottom of the polishing wheel, quickly grinding the protrusion flat and improving work efficiency.

[0003] Since the grinding disc of the existing polishing machine is a disc with a relatively large diameter, the ground is ground flat by rotating the grinding disc. This single rotation grinding has low grinding efficiency, is time-consuming and labor-intensive, and needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to provide a portable floor polishing machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable floor grinder, comprising a mounting frame and an extension handle, the extension handle is movably connected to the upper side of the mounting frame, a driving machine is fixedly installed on the upper side of the mounting frame, a connecting chassis is rotatably installed on the lower side of the mounting frame, the driving machine drives the connecting chassis to rotate, a plurality of connecting shafts are rotatably installed inside the connecting chassis, and a detachable grinding disc is installed at the bottom end of each connecting shaft, a transmission gear is fixedly installed on the top of each connecting shaft, an inner gear ring is fixedly installed on the lower side of the mounting frame, the transmission gear meshes with the inner gear ring for transmission, when the connecting chassis rotates, the transmission gear rolls along the inner ring of the inner gear ring, driving the connecting shaft to rotate, this design improves the grinding efficiency by setting a plurality of grinding discs, utilizing the simultaneous rotation of each grinding disc, and performing annular motion, so as to achieve the effect of convenient operation and efficient grinding.

[0006] In some embodiments, a connecting seat is fixedly installed on the upper side of the mounting frame, a positioning plate is rotatably installed in the connecting seat, the bottom end of the extended handle is fixedly connected to the outer surface of the positioning plate, a plurality of limiting holes are opened at the end of the positioning plate, and the plurality of limiting holes are arranged in a ring array, a positioning bolt is threadedly installed on the side of the connecting seat, and the end of the positioning bolt can be inserted into one of the limiting holes. The positioning plate is rotated to different angles, and the positioning bolt is inserted into the limiting holes at different positions, so that the flipping angle of the extended handle can be adjusted to facilitate use by construction workers of different heights.

[0007] In some embodiments, the grinding disc includes a mounting disc and a sanding ring, the connecting seat is embedded in the upper surface of the sanding ring, a penetrating step hole is opened on the upper surface of the mounting disc, the bottom end of the connecting shaft is inserted into the step hole, and the locking bolt is inserted from the bottom side of the connecting seat, the locking bolt is threadedly connected to the bottom end of the connecting shaft, so that the mounting disc and the bottom end of the connecting shaft are locked and fixed, a limiting hole is opened on the upper surface of the mounting disc, a positioning ring is fixedly installed on the surface of the connecting shaft, and a limiting pin is fixedly installed on the lower surface of the positioning ring, and the limiting pin can be inserted into the limiting hole. This design makes a single grinding disc relatively small, and it is more convenient to replace the grinding disc during maintenance.

[0008] In some embodiments, a protective cover is provided around the mounting frame, and a connecting sleeve is fixedly installed on the upper side of the protective cover, so that the protective cover plays a role of safety protection and prevents foreign objects from entering.

[0009] In some embodiments, a sliding column is fixedly installed on the upper surface of the mounting frame, the connecting sleeve sliding sleeve is arranged on the surface of the sliding column, an adjusting nut is threadedly installed on the top end of the sliding column, a first spring and a second spring are sleeved on the surface of the sliding column, the first spring and the second spring are respectively pressed against the upper and lower ends of the connecting sleeve, the adjusting nut presses the first spring downward, and the adjusting nut is rotated to press the protective cover downward to extend it downward, so as to adjust the gap between the bottom of the protective cover and the ground.

[0010] Beneficial Effects

[0011] The utility model provides a portable floor polishing machine, which has the following beneficial effects:

[0012] 1. The portable floor polisher is provided with a plurality of connecting shafts on a connecting chassis. A grinding disc is provided at the bottom end of each connecting shaft. The grinding discs are arranged in a ring array. The driving machine drives the connecting chassis to rotate and drives each grinding disc to rotate and perform a ring motion. The design improves the grinding efficiency by providing a plurality of grinding discs and utilizing the simultaneous rotation of each grinding disc and the ring motion, thereby achieving the effect of convenient operation and efficient grinding.

[0013] 2. The portable floor polisher, by setting the meshing transmission of the transmission gear and the internal gear ring, enables one driving machine to drive multiple grinding discs to rotate, simplifies the structure of the polisher, makes it more reliable in operation, and is light and easy to carry. Each grinding disc is independently connected to the connecting shaft, which makes it more convenient to replace and repair later. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model (I);

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (II);

[0016] Figure 3 This is a schematic diagram of the front cross-section structure of the installation rack;

[0017] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1 mounting frame, 2 extension handle, 3 driving machine, 4 connecting chassis, 5 connecting shaft, 6 grinding disc, 7 transmission gear, 8 internal gear ring, 9 connecting seat, 10 positioning disc, 11 limiting hole, 12 positioning bolt, 13 mounting disc, 14 sanding ring, 15 locking bolt, 16 limiting pin, 17 protective cover, 18 connecting sleeve, 19 adjusting nut, 20 sliding column, 21 first spring, 22 second spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: a portable floor polishing machine, comprising a mounting frame 1 and an extension handle 2, the extension handle 2 is movably connected to the upper side of the mounting frame 1, specifically, a connecting seat 9 is fixedly installed on the upper side of the mounting frame 1, a positioning plate 10 is rotatably installed in the connecting seat 9, the bottom end of the extension handle 2 is fixedly connected to the outer surface of the positioning plate 10, a plurality of limiting holes 11 are opened at the end of the positioning plate 10, and the plurality of limiting holes 11 are arranged in a ring-shaped array, a positioning bolt 12 is threadedly installed on the side of the connecting seat 9, and the end of the positioning bolt 12 can be inserted into one of the limiting holes 11, the positioning plate 10 is rotated to different angles, and the positioning bolt 12 is inserted into the limiting holes 11 at different positions, the flipping angle of the extension handle 2 can be adjusted, which is convenient for construction workers of different heights to use.

[0021] A driving machine 3 is fixedly installed on the upper side of the mounting frame 1, and the driving machine 3 can be an internal combustion engine or a reduction motor. A connecting chassis 4 is rotatably installed on the lower side of the mounting frame 1, and the driving machine 3 drives the connecting chassis 4 to rotate. A plurality of connecting shafts 5 are rotatably installed inside the connecting chassis 4, and a detachable grinding disc 6 is installed at the bottom end of each connecting shaft 5. A transmission gear 7 is fixedly installed on the top of each connecting shaft 5, and an inner gear ring 8 is fixedly installed on the lower side of the mounting frame 1. The transmission gear 7 is meshed with the inner gear ring 8 for transmission. When the connecting chassis 4 rotates, the transmission gear 7 rolls along the inner ring of the inner gear ring 8, driving the connecting shaft 5 to rotate, realizing the rotation of the grinding disc 6 and performing a circular motion at the same time, thereby improving the working efficiency of floor grinding and being more practical. By setting the meshing transmission of the transmission gear 7 and the inner gear ring 8, one driving machine 3 can drive multiple grinding discs 6 to rotate, thereby simplifying the structure of the polishing machine, making it more reliable in operation, and light and easy to carry.

[0022] Among them, the grinding disc 6 includes a mounting disc 13 and a sanding ring 14, the connecting seat 9 is embedded in the upper surface of the sanding ring 14, the upper surface of the mounting disc 13 is provided with a penetrating step hole, the bottom end of the connecting shaft 5 is inserted into the step hole, and the locking bolt 15 is inserted from the lower side of the connecting seat 9, so that the locking bolt 15 is threadedly connected to the bottom end of the connecting shaft 5, so that the mounting disc 13 and the bottom end of the connecting shaft 5 are locked and fixed.

[0023] A limiting hole 11 is provided on the upper surface of the mounting plate 13, a positioning ring is fixedly installed on the surface of the connecting shaft 5, and a limiting pin 16 is fixedly installed on the lower surface of the positioning ring. The limiting pin 16 can be inserted into the limiting hole 11. Compared with the existing integral grinding disc, the diameter of the grinding disc 6 is reduced, the friction force generated by grinding is also smaller, the operation is more labor-saving, and it is also more convenient to replace the grinding disc 6 during maintenance.

[0024] A protective cover 17 is arranged around the mounting frame 1, a connecting sleeve 18 is fixedly installed on the upper side of the protective cover 17, a sliding column 20 is fixedly installed on the upper surface of the mounting frame 1, the connecting sleeve 18 is slidably sleeved on the surface of the sliding column 20, an adjusting nut 19 is threadedly installed on the top end of the sliding column 20, a first spring 21 and a second spring 22 are sleeved on the surface of the sliding column 20, the first spring 21 and the second spring 22 are respectively pressed against the upper and lower ends of the connecting sleeve 18, and the adjusting nut 19 presses the first spring 21 downward.

[0025] Working principle: the driving machine 3 drives the connecting chassis 4 to rotate. When the connecting chassis 4 rotates, the transmission gear 7 rolls along the inner ring of the inner gear ring 8, driving the connecting shaft 5 to rotate, so that the driving machine 3 drives each grinding disc 6 to rotate, and at the same time makes each grinding disc 6 do a circular motion to grind the ground. The protective cover 17 plays a role of safety protection to prevent foreign matter from entering. The adjusting nut 19 can be rotated to press the protective cover 17 downward to extend it downward so as to adjust the gap between the bottom of the protective cover 17 and the ground. The extension handle 2 is flipped upward, and the adjusting nut 19 is removed, and the protective cover 17 can be removed as a whole from the upper side.

[0026] The portable floor polisher is provided with a plurality of connecting shafts 5 on a connecting chassis 4. A grinding disc 6 is provided at the bottom end of each connecting shaft 5. The plurality of grinding discs 6 are arranged in a ring array to meet the grinding needs of a larger coverage area. The driving machine 3 drives the connecting chassis 4 to rotate while driving each grinding disc 6 to rotate and make a ring motion. The design provides a plurality of grinding discs 6 and utilizes the simultaneous rotation of each grinding disc 6 and the ring motion to improve the grinding efficiency, thereby achieving the effect of convenient operation and efficient grinding.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable floor polishing machine, comprising a mounting frame (1) and an extension handle (2), characterized in that: The extension handle (2) is movably connected to the upper side of the mounting frame (1); a driving machine (3) is fixedly installed on the upper side of the mounting frame (1); a connecting chassis (4) is rotatably installed on the lower side of the mounting frame (1); the driving machine (3) drives the connecting chassis (4) to rotate; a plurality of connecting shafts (5) are rotatably installed inside the connecting chassis (4); a detachable grinding disc (6) is installed at the bottom end of each connecting shaft (5); a transmission gear (7) is fixedly installed on the top end of each connecting shaft (5); an inner gear ring (8) is fixedly installed on the lower side of the mounting frame (1); the transmission gear (7) meshes with the inner gear ring (8) for transmission; when the connecting chassis (4) rotates, the transmission gear (7) rolls along the inner ring of the inner gear ring (8), driving the connecting shaft (5) to rotate.

2. A portable floor polisher according to claim 1, characterized in that: A connecting seat (9) is fixedly mounted on the upper side of the mounting frame (1), a positioning plate (10) is rotatably mounted inside the connecting seat (9), and the bottom end of the extended handle (2) is fixedly connected to the outer surface of the positioning plate (10).

3. A portable floor polisher according to claim 2, characterized in that: A plurality of limiting holes (11) are provided at the end of the positioning plate (10), and the plurality of limiting holes (11) are arranged in a ring-shaped array. A positioning bolt (12) is threadedly mounted on the side surface of the connecting seat (9), and the end of the positioning bolt (12) can be inserted into one of the limiting holes (11).

4. A portable floor polisher according to claim 3, characterized in that: The grinding disc (6) comprises a mounting disc (13) and a sanding ring (14). The connecting seat (9) is embedded in the upper surface of the sanding ring (14). The upper surface of the mounting disc (13) is provided with a step hole extending therethrough. The bottom end of the connecting shaft (5) is inserted into the step hole. A locking bolt (15) is inserted from the lower side of the connecting seat (9). The locking bolt (15) is threadedly connected to the bottom end of the connecting shaft (5), so that the mounting disc (13) and the bottom end of the connecting shaft (5) are locked and fixed.

5. A portable floor polisher according to claim 4, characterized in that: A limiting hole (11) is provided on the upper surface of the mounting plate (13), a positioning ring is fixedly mounted on the surface of the connecting shaft (5), and a limiting pin (16) is fixedly mounted on the lower surface of the positioning ring. The limiting pin (16) can be inserted into the limiting hole (11).

6. A portable floor polisher according to any one of claims 1 to 5, characterized in that: A protective cover (17) is arranged around the mounting frame (1), and a connecting sleeve (18) is fixedly mounted on the upper side of the protective cover (17).

7. A portable floor polisher according to claim 6, characterized in that: A sliding column (20) is fixedly mounted on the upper surface of the mounting frame (1), the connecting sleeve (18) is slidingly sleeved on the surface of the sliding column (20), and an adjusting nut (19) is threadedly mounted on the top end of the sliding column (20).

8. A portable floor polisher according to claim 7, characterized in that: The surface of the sliding column (20) is sleeved with a first spring (21) and a second spring (22), the first spring (21) and the second spring (22) respectively press against the upper and lower ends of the connecting sleeve (18), and the adjusting nut (19) presses the first spring (21) downwards.

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