Concrete grinding machine

Abstract

The utility model discloses a concrete grinding machine which comprises a grinding machine assembly, and the grinding machine assembly comprises a movable plate. The supporting assembly comprises a supporting column, a telescopic spring, a supporting rod, a supporting frame, a fixed shaft, a movable column, a first sliding groove and a second sliding groove; the supporting columns are slidably connected to the two sides of the outer end of the movable plate, the telescopic springs are fixedly connected to the upper ends of the bottoms of the supporting columns, the supporting rods are fixedly connected to the inner portions of the upper ends of the supporting columns, the supporting frame sleeves the outer ends of the supporting rods, the fixing shaft is rotatably connected to the inner portion of the center of the supporting frame, and the movable columns sleeve the upper ends of the supporting frame. The first sliding groove is formed in the inner side of the lower end of the supporting frame. The grinding disc has the advantages that when the grip is loosened by mistake, the supporting column is driven by the elastic force of the telescopic spring to reset and move downwards, the bottom end of the supporting column makes contact with the upper end of concrete, the movable plate is supported, and therefore the grinding disc is separated from the concrete ground, continuous rotation of the grinding disc can be avoided, and safety is high.

Description

Technical Field

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

[0002] A concrete grinder is a machine used to polish, level, and grind concrete surfaces. It's widely used in construction, road repair, and floor treatment. Its working principle is to use a rotating grinding disc to grind the concrete surface, removing bumps and impurities to achieve a smooth finish.

[0003] When using an existing concrete grinder, if the operator accidentally releases the handle, the grinding disc will continue to rotate and grind on the concrete floor, causing the concrete grinder to rotate under the drive of the grinding disc, which poses a safety hazard. Therefore, it is necessary to provide a device that prevents the operator from accidentally releasing the handle and preventing the concrete grinder from rotating on the concrete, so as to avoid safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a concrete grinder to solve the problem in the above background technology that when the existing concrete grinder is in use, when the operator accidentally loosens the handle, the grinding disc continues to rotate and grind on the concrete floor, causing the concrete grinder to rotate under the drive of the grinding disc, posing a safety hazard.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a concrete grinding machine, comprising:

[0007] a grinder assembly, the grinder assembly including a movable plate;

[0008] A support assembly, the support assembly comprising a support column, a telescopic spring, a support rod, a support frame, a fixed shaft, a movable column, a first slide groove and a second slide groove;

[0009] The support column is slidably connected to the positions on both sides of the outer end of the movable plate, the telescopic spring is fixedly connected to the upper end position of the bottom of the support column, the support rod is fixedly connected to the inner position of the upper end of the support column, the support frame is sleeved at the outer end position of the support rod, the fixed shaft is rotatably connected to the central inner position of the support frame, the movable column is sleeved at the upper end position of the support frame, the first sliding groove is opened at the inner side position of the lower end of the support frame, and the second sliding groove is opened at the outer side position of the top end of the support frame.

[0010] Furthermore, the grinding machine assembly further comprises a fixed box, a moving wheel, a handle, a driving box, a screw rod, a motor and a grinding disc;

[0011] The movable wheel is rotatably connected to the two sides of the bottom end of the fixed box, the handle is fixedly connected to the outer side of the fixed box, the driving box is fixedly connected to the outer side of the upper end of the fixed box, the screw rod is fixedly connected to the inner position of the driving box, the movable plate is threadedly connected to the outer surface of the screw rod, the motor is fixedly connected to the upper end of the movable plate, and the grinding disc is fixedly connected to the output shaft of the motor.

[0012] Furthermore, the top end of the telescopic spring is fixedly connected to the bottom end of the movable plate, and the fixed shaft is fixedly connected to positions on both sides of the fixed box.

[0013] Furthermore, the support frame is a Z-shaped structure, and the movable column extends upward through the handle.

[0014] Furthermore, it also includes a cleaning assembly, which includes a fixed plate, a movable rod, a limit nut, a support plate and a brush;

[0015] The fixed plate is fixedly connected to the outer side of the bottom end of the fixed box, the movable rod passes through the fixed plate and extends upward, the limit nut is threadedly connected to the outer surface of the movable rod, the support plate is fixedly connected to the bottom end of the fixed plate, and the brush is fixedly connected to the bottom end of the support plate.

[0016] Furthermore, the outer surface of the movable rod has a threaded structure opened relative to the limiting nut, and both sides of the support plate are inclined structures.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The utility model provides a support assembly. When the grinding disc needs to be used to grind the concrete floor, the movable column is pressed downward to drive the upper end of the support frame to move downward, and the support frame is rotated under the drive of the fixed shaft, so that the lower end of the support frame moves upward, and drives the support rod to move upward. The upward movement of the support rod drives the support column to move upward and drives the telescopic spring to compress, so that the support column does not support the outer end of the movable plate, so that the bottom end of the grinding disc contacts the upper end of the concrete, thereby grinding. When the grip is accidentally released, the support column is driven by the elastic force of the telescopic spring to reset and move downward, so that the bottom end of the support column contacts the upper end of the concrete, and supports the movable plate, so that the grinding disc and the concrete floor are separated, and the grinding disc can be prevented from continuing to rotate, which is highly safe.

[0019] 2. Based on the first beneficial effect, by setting up a cleaning component, since dust will appear after the concrete floor is polished, by moving the movable rod downward, the movable rod drives the support plate to move downward, and the support plate drives the brush to move downward to scrape the dust on the polished concrete floor to both sides, thereby facilitating the observation of the polishing effect of the concrete floor, and when the polishing is not completed, the movable rod can be moved upward to move the brush upward and separate from the concrete floor, thereby avoiding accelerated wear of the brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is the main view of the utility model;

[0022] Figure 2 This is a structural diagram of the components of the grinding machine of the utility model;

[0023] Figure 3 This is a structural diagram of the support assembly of the utility model;

[0024] Figure 4 This is a structural diagram of the cleaning component of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 11. Fixed box; 12. Moving wheel; 13. Handle; 14. Drive box; 15. Screw; 16. Movable plate; 17. Motor; 18. Grinding disc; 21. Support column; 22. Telescopic spring; 23. Support rod; 24. Support frame; 25. Fixed shaft; 26. Movable column; 27. First slide; 28. Second slide; 31. Fixed plate; 32. Movable rod; 33. Limit nut; 34. Support plate; 35. Brush. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0031] See also Figure 1-3 As shown, this embodiment is a concrete grinding machine, comprising:

[0032] The grinder assembly includes a movable plate 16;

[0033] The support assembly includes a support column 21, a telescopic spring 22, a support rod 23, a support frame 24, a fixed shaft 25, a movable column 26, a first slide groove 27 and a second slide groove 28;

[0034] The support column 21 is slidably connected to the positions on both sides of the outer end of the movable plate 16, the telescopic spring 22 is fixedly connected to the upper end position of the bottom of the support column 21, the support rod 23 is fixedly connected to the inner position of the upper end of the support column 21, the support frame 24 is sleeved on the outer end position of the support rod 23, the fixed shaft 25 is rotatably connected to the central inner position of the support frame 24, the movable column 26 is sleeved on the upper end position of the support frame 24, the first slide groove 27 is opened at the inner side position of the lower end of the support frame 24, and the second slide groove 28 is opened at the outer side position of the top end of the support frame 24;

[0035] The support column 21 is used to support the bottom of the outer end of the movable plate 16, the telescopic spring 22 is used to reset the support column 21, the support rod 23 is used to drive the support column 21 to move, the support frame 24 is used to drive the support rod 23 to move, the fixed shaft 25 is used to guide the rotation of the support frame 24, the movable column 26 is used to drive the support frame 24 to rotate, the first slide groove 27 is used to guide the movement of the support column 21, and the second slide groove 28 is used to guide the movement of the movable column 26;

[0036] The grinding machine assembly also includes a fixed box 11, a moving wheel 12, a handle 13, a drive box 14, a screw rod 15, a motor 17 and a grinding disc 18;

[0037] The moving wheel 12 is rotatably connected to both sides of the bottom end of the fixed box 11, the handle 13 is fixedly connected to the outer side of the fixed box 11, the driving box 14 is fixedly connected to the outer side of the upper end of the fixed box 11, the screw rod 15 is fixedly connected to the inner position of the driving box 14, the movable plate 16 is threadedly connected to the outer surface of the screw rod 15, the motor 17 is fixedly connected to the upper end of the movable plate 16, and the grinding disc 18 is fixedly connected to the output shaft of the motor 17;

[0038] The moving wheel 12 is used to drive the fixed box 11 to move, the handle 13 is used for holding, the driving box 14 is used to drive the screw rod 15 to rotate, the screw rod 15 is used to drive the movable plate 16 to move up and down, the motor 17 is used to drive the grinding disc 18 to rotate, and the grinding disc 18 is used to grind the concrete;

[0039] The top of the telescopic spring 22 is fixedly connected to the bottom of the movable plate 16, and the fixed shaft 25 is fixedly connected to both sides of the fixed box 11;

[0040] When the support column 21 moves upward, it can drive the telescopic spring 22 to compress and generate elastic force;

[0041] The support frame 24 is a Z-shaped structure, and the movable column 26 extends upward through the handle 13;

[0042] When the movable column 26 moves downward, it can drive the support frame 24 to rotate along the fixed axis 25;

[0043] Working principle: When the grinding disc 18 is needed to grind the concrete flat, hold the handle 13 with both hands and apply downward force to the movable column 26, so that the movable column 26 moves downward and drives the support frame 24 to rotate counterclockwise. The support frame 24 rotates counterclockwise along the fixed axis 25, driving the support rod 23 to move inside the first slide groove 27 and move vertically upward. The vertical upward movement of the support rod 23 drives the support column 21 to move vertically upward. The support column 21 moves upward and separates from the concrete floor, so that the support column 21 does not support the bottom end of the movable plate 16, so that the grinding disc 18 can contact the concrete floor, thereby grinding the concrete floor flat.

[0044] When the operator accidentally releases the handle 13, the support column 21 moves upward, compressing the telescopic spring 22 to generate elastic force. Under the elastic force of the telescopic spring 22, the support column 21 moves downward to reset. When the bottom end of the support column 21 contacts the concrete floor, the support column 21 supports the bottom end of the movable plate 16, separating the grinding disc 18 from the concrete floor, thereby preventing the grinding disc 18 from continuing to rotate on the concrete floor.

[0045] See also Figure 4 As shown, this embodiment is based on the above embodiment and also includes:

[0046] Cleaning assembly, the cleaning assembly includes a fixed plate 31, a movable rod 32, a limit nut 33, a support plate 34 and a brush 35;

[0047] The fixing plate 31 is fixedly connected to the outer side of the bottom end of the fixing box 11, the movable rod 32 extends upward through the fixing plate 31, the limit nut 33 is threadedly connected to the outer surface of the movable rod 32, the support plate 34 is fixedly connected to the bottom end of the fixing plate 31, and the brush 35 is fixedly connected to the bottom end of the support plate 34;

[0048] The fixing plate 31 is used to support the movable rod 32, the movable rod 32 is used to support the support plate 34, the limiting nut 33 is used to limit the movable rod 32, the support plate 34 is used to support the brush 35, and the brush 35 is used to clean dust;

[0049] The outer surface of the movable rod 32 has a threaded structure relative to the limit nut 33, and the two sides of the support plate 34 are inclined structures;

[0050] The movable rod 32 can move up and down inside the fixed plate 31 and drive the support plate 34 to move up and down;

[0051] Working principle: When the grinding disc 18 is grinding the concrete floor, the limiting nut 33 is screwed upward so that the limiting nut 33 does not limit the movable rod 32, and then the movable rod 32 is moved downward, so that the movable rod 32 drives the support plate 34 and the brush 35 to move downward. When the bottom end of the brush 35 contacts the concrete floor, the limiting nut 33 is screwed downward to fix the movable rod 32 on the fixed plate 31, and the dust can be scraped outward after the concrete is ground flat, so that the concrete floor after grinding can be observed;

[0052] When the concrete floor is not smoothed, the movable rod 32 is moved upward, so that the movable rod 32 moves upward to drive the support plate 34 and the brush 35 to move upward, so that the brush 35 is located above the concrete floor, thereby avoiding contact between the brush 35 and the floor, and reducing unnecessary wear of the brush 35.

[0053] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A concrete grinding machine, characterized in that: include: A grinder assembly, the grinder assembly including a movable plate (16); A support assembly, the support assembly comprising a support column (21), a telescopic spring (22), a support rod (23), a support frame (24), a fixed shaft (25), a movable column (26), a first slide groove (27) and a second slide groove (28); The support column (21) is slidably connected to the positions on both sides of the outer end of the movable plate (16), the telescopic spring (22) is fixedly connected to the upper end position of the bottom of the support column (21), the support rod (23) is fixedly connected to the inner position of the upper end of the support column (21), the support frame (24) is sleeved on the outer end position of the support rod (23), the fixed shaft (25) is rotatably connected to the central inner position of the support frame (24), the movable column (26) is sleeved on the upper end position of the support frame (24), the first sliding groove (27) is opened at the inner side position of the lower end of the support frame (24), and the second sliding groove (28) is opened at the outer side position of the top end of the support frame (24).

2. A concrete grinding machine according to claim 1, characterized in that: The grinding machine assembly further comprises a fixed box (11), a moving wheel (12), a handle (13), a driving box (14), a screw rod (15), a motor (17) and a grinding disc (18); The moving wheel (12) is rotatably connected to the two sides of the bottom end of the fixed box (11), the handle (13) is fixedly connected to the outer side of the fixed box (11), the driving box (14) is fixedly connected to the outer side of the upper end of the fixed box (11), the screw rod (15) is fixedly connected to the inner position of the driving box (14), the movable plate (16) is threadedly connected to the outer surface of the screw rod (15), the motor (17) is fixedly connected to the upper end of the movable plate (16), and the grinding disc (18) is fixedly connected to the output shaft of the motor (17).

3. A concrete grinding machine according to claim 1, characterized in that: The top end of the telescopic spring (22) is fixedly connected to the bottom end of the movable plate (16), and the fixed shaft (25) is fixedly connected to positions on both sides of the fixed box (11).

4. A concrete grinding machine according to claim 1, characterized in that: The support frame (24) is a Z-shaped structure, and the movable column (26) passes through the handle (13) and extends upward.

5. The concrete grinding machine according to claim 1, characterized in that: It also includes a cleaning assembly, which includes a fixed plate (31), a movable rod (32), a limiting nut (33), a supporting plate (34) and a brush (35); The fixed plate (31) is fixedly connected to the outer side of the bottom end of the fixed box (11); the movable rod (32) passes through the fixed plate (31) and extends upward; the limit nut (33) is threadedly connected to the outer surface of the movable rod (32); the support plate (34) is fixedly connected to the bottom end of the fixed plate (31); and the brush (35) is fixedly connected to the bottom end of the support plate (34).

6. A concrete grinding machine according to claim 5, characterized in that: The outer surface of the movable rod (32) has a threaded structure relative to the limiting nut (33), and both sides of the support plate (34) are inclined structures.

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