Grinding head for floor grinding machine
By introducing liftable columns and universal wheels into the grinding head of the floor grinder, stable support is achieved using worm gear and worm transmission, the balance and grinding impact problems of floor grinders during transition movement in the prior art are solved, and the problem of grinding wheel impact in the prior art is improved. Mobile security and grinding efficiency.
Patent Information
- Application Number
- CN202323455382.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-19
AI Technical Summary
The existing floor grinders are difficult to maintain balance due to their heavy weight when moving in the transition, and the grinder is prone to hitting the ground and causing damage.
A grinding head including liftable columns and universal wheels is designed. The lifting and lowering of the columns and universal wheels is driven by the rotating ring, and the reverse self-locking and self-positioning is achieved using worm gear and worm transmission to ensure that the columns and universal wheels are in the rotational direction. Effectively support the grinder when moving.
The stability and safety of the grinding head during transition movement is achieved, and the grinding disc is prevented from hitting the ground damage, and does not affect the rotation of the grinding disc during grinding.
Smart Images
Figure CN222269631U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of floor grinding machines, in particular to a grinding head for a floor grinding machine. Background Art
[0002] Floor grinder is mainly used for floor grinding. It can effectively grind terrazzo, concrete surface, epoxy mortar layer and old epoxy floor, etc.
[0003] The grinding head of the floor grinder mainly includes a gear transmission box and a grinding disc on the lower side of the gear transmission box. When grinding, the motor drives the gear transmission box to work and rotate the grinding disc. The grinding disc of the grinding head at the front end of the grinder is attached to the upper side of the ground for grinding, and the rear is supported by the walking wheels.
[0004] In order to facilitate the transfer and relocation of the grinder, the worker needs to press down the rear handle to lift the grinding head and grinding disc at the front end of the grinder off the ground and then push it to transfer. Since the grinding head and its gear transmission box and motor at the front of the grinder are heavy, it is difficult to maintain balance during the transfer and the grinding disc of the grinding head can easily hit the ground and cause damage. Utility Model Content
[0005] The purpose of the utility model is to provide a grinding head for a floor grinding machine in order to solve the above-mentioned problems in the prior art.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A grinding head for a floor grinder comprises an outer shell and a transmission box located inside the outer shell, wherein the lower side of the transmission box is connected to a grinding disc; an annular gap is provided between the outer shell and the transmission box; a plurality of guide seats are evenly arranged on the outer side of the transmission box; a plurality of columns are provided between the outer shell and the transmission box, universal wheels are installed at the lower ends of the columns, the columns correspond to the guide seats one by one and slide through the corresponding guide seats; the columns are connected to a driving component that drives the columns to rise and fall.
[0008] Furthermore, the driving assembly includes a rotating ring, which is rotatably installed on the inner side of the outer shell. The inner ring side of the rotating ring is provided with a plurality of arc grooves corresponding to the columns one by one, and the arc grooves gradually decrease in height from one end to the other end; the upper end of the column is vertically connected to the guide column, and the guide column extends into the arc groove.
[0009] Furthermore, a gear ring is provided on the outer side of the rotating ring, a box body is provided on one side of the outer shell, and the box body is communicated with the inside of the outer shell; a gear is rotatably installed in the box body, and the gear is meshed with the gear ring.
[0010] Furthermore, the shaft of the gear extends outside the box body and is connected to a worm wheel, and a worm meshing with the worm wheel is rotatably mounted on the upper side of the box body.
[0011] Furthermore, one end of the worm is connected to a hand wheel.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] The utility model is provided with a liftable column and a universal wheel. When the grinding work is performed, the column and the universal wheel are hidden in the gap between the shell and the transmission box; when the grinding machine is transferred and moved, the column and the universal wheel move downward and extend out to support the ground instead of the grinding disc, so as to facilitate the transfer and movement of the grinding machine and ensure the safety of the grinding head;
[0014] The utility model adopts a rotating ring to synchronously drive each column and the universal wheel to rise and fall, so that the columns and the universal wheel can be raised and lowered quickly and conveniently; the columns and the universal wheel can be arranged between the grinding discs, and the volume of the grinding head is limitedly increased, and the rotating grinding work of the grinding disc is not affected;
[0015] The utility model adopts worm gear transmission and has reverse self-locking and self-positioning functions, thereby ensuring the stability of the lifting and lowering positions of the column and the universal wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the utility model from a side view when installed on a floor grinding machine.
[0018] Figure 3 It is a schematic diagram of the utility model installed on a floor grinding machine from a rear side perspective.
[0019] Figure 4 The utility model is a side structural schematic diagram of the state of being installed on a floor grinding machine.
[0020] In the figure: 1, outer shell; 2, transmission box; 3, grinding disc; 4, guide seat; 5, column; 6, universal wheel; 7, rotating ring; 8, arc groove; 9, guide column; 10, gear ring; 11, gear; 12, worm wheel; 13, worm; 14, hand wheel; 15, box body. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0023] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" that may appear 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, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] The present invention is further described in detail below in conjunction with the embodiments.
[0027] The specific embodiment of the grinding head for the floor grinding machine provided by the utility model is as follows:
[0028] See also Figure 1-4 The grinding head for the floor grinder includes a disc-shaped outer shell 1 and a disc-shaped transmission box 2 located inside the outer shell 1. The lower side of the outer shell 1 has an opening, and the lower side of the transmission box 2 is connected to a grinding disc 3; the transmission box 2 is used to transmit the power output by the motor of the floor grinder to drive the grinding disc 3 to rotate and grind the ground.
[0029] There is an annular gap between the housing 1 and the transmission box 2. In this embodiment, the bottom plate of the transmission box 2 protrudes in all directions and blocks the lower side of the gap, which can reduce the entry of grinding dust into the gap.
[0030] Four guide seats 4 are evenly arranged on the outer side of the transmission box 2, that is, the circumferential side of the transmission box 2 facing the housing 1; four vertical columns 5 are arranged in the gap between the housing 1 and the transmission box 2, and universal wheels 6 are installed at the lower ends of the columns 5. The columns 5 correspond to the guide seats 4 one by one and slide through their corresponding guide seats 4; the edge of the bottom plate of the transmission box 2 is provided with a notch corresponding to the universal wheel 6, so that the universal wheel 6 can pass through the notch. The universal wheel 6 and the grinding disc 3 are evenly and alternately arranged on the circumference, and the circumferential space between the grinding discs 3 is reasonably utilized.
[0031] The column 5 is connected to a driving assembly for driving the column 5 to rise and fall. In the present embodiment, the driving assembly includes a rotating ring 7, which is rotatably mounted on the inner side of the housing 1 and located on the outer side of the column 5. A plurality of arc grooves 8 corresponding to the columns 5 are provided on the inner side of the rotating ring 7, and the arc grooves 8 gradually decrease in height from one end to the other end. The upper end of the column 5 is vertically connected to a guide column 9, and the guide column 9 extends into the arc groove 8.
[0032] When the rotating ring 7 is rotated, the arc groove 8 moves to change the height of the guide column 9, and the guide column 9 drives the column 5 to slide vertically along the guide seat 4, changing the height of the universal wheel 6. When grinding, the height position of the universal wheel 6 corresponds to the notch and is higher than the grinding disc 3, which does not affect the grinding work of the grinding disc 3. When the grinding machine is transferred, the column 5 and the universal wheel 6 are lowered, the lower end of the universal wheel 6 is lower than the grinding disc 3, and the grinding disc 3 is supported on the ground. The grinding disc 3 leaves the ground, and the grinding machine can be easily pushed to move.
[0033] If the heights of the universal wheels 6 are the same, only the universal wheels 6 at the rear of the grinding head will touch the ground. Although the grinding head can be supported to move, the universal wheels 6 at the front of the grinding head cannot touch the ground. In order to ensure the balance of the floor grinder during the transfer, the heights of the arc grooves 8 can be different or the vertical spans of the columns 5 can be different. The large walking wheels at the rear of the floor grinder are supported on the ground, and when the universal wheels 6 in this embodiment are fully extended, the grinding head is in a tilted state with the front end facing upward. In order to make each universal wheel 6 contact the ground, when the universal wheels 6 are fully extended, the distance from the lower end of the housing 1 of each universal wheel 6 from the front to the back of the grinding head decreases successively. When the universal wheels 6 are fully retracted, it is sufficient to ensure that the universal wheels 6 are higher than the grinding disc 3.
[0034] In this embodiment, a driving assembly with a rotating ring 7 is used to drive the column 5 and the universal wheel 6 to rise and fall; in some other embodiments, an automatic telescopic rod can be used to drive the column 5 and the universal wheel 6 to rise and fall, replacing the driving assembly in this embodiment; the automatic telescopic rod can be an electric telescopic rod, a hydraulic telescopic rod, etc.
[0035] A ring gear 10 is provided on the outside of the rotating ring 7, and a box body 15 is provided on one side of the housing 1, and the box body 15 is connected to the inside of the housing 1; a gear 11 is rotatably installed in the box body 15, and the gear 11 meshes with the ring gear 10. The shaft of the gear 11 extends to the outside of the box body 15 and is connected to a worm wheel 12. A worm 13 meshing with the worm wheel 12 is rotatably installed on the upper side of the box body 15, and a hand wheel 14 is connected to the rear end of the worm 13.
[0036] Turning the hand wheel 14 causes the worm gear 12 and the worm 13 to drive the gear 11 to rotate, and the gear 11 can drive the rotating ring 7 to rotate through the gear ring 10, and synchronously drive the four columns 5 and the universal wheel 6 to rise and fall. The worm gear 12 and the worm 13 drive has reverse self-locking property, which can realize automatic positioning, thereby realizing the positioning of the column 5 and the universal wheel 6.
[0037] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A grinding head for a floor grinding machine, comprising a housing (1) and a transmission box (2) located inside the housing (1), wherein the lower side of the transmission box (2) is connected to a grinding disc (3); the characteristics are: An annular gap is provided between the housing (1) and the transmission box (2); a plurality of guide seats (4) are evenly arranged on the outside of the transmission box (2); a plurality of columns (5) are provided between the housing (1) and the transmission box (2); universal wheels (6) are installed at the lower ends of the columns (5); the columns (5) correspond to the guide seats (4) one by one and slide through their corresponding guide seats (4); and the columns (5) are connected to a driving component that drives the columns (5) to rise and fall.
2. The grinding head for a floor grinding machine according to claim 1, characterized in that: The driving assembly comprises a rotating ring (7) which is rotatably mounted on the inner side of the housing (1); a plurality of arc grooves (8) corresponding to the columns (5) are provided on the inner side of the rotating ring (7); the arc grooves (8) gradually decrease in height from one end to the other end; the upper end of the column (5) is vertically connected to a guide column (9), and the guide column (9) extends into the arc groove (8).
3. The grinding head for a floor grinding machine according to claim 2, characterized in that: A gear ring (10) is provided on the outer side of the rotating ring (7), and a box body (15) is provided on one side of the outer shell (1). The box body (15) is communicated with the inside of the outer shell (1); a gear (11) is rotatably mounted inside the box body (15), and the gear (11) meshes with the gear ring (10).
4. The grinding head for a floor grinding machine according to claim 3, characterized in that: The shaft of the gear (11) extends outside the box body (15) and is connected to a worm wheel (12). A worm (13) meshing with the worm wheel (12) is rotatably mounted on the upper side of the box body (15).
5. The grinding head for a floor grinding machine according to claim 4, characterized in that: One end of the worm (13) is connected to a hand wheel (14).