Concrete surface grinding device for civil engineering

Abstract

The utility model discloses a concrete surface polishing device for civil engineering. The concrete surface polishing device comprises a movable seat, a positioning groove and a hand-screwing bolt. According to the concrete surface grinding device for the civil engineering, guide rods are symmetrically and fixedly connected to the front side of a frame in parallel, movable seats are jointly and slidably connected to the two corresponding guide rods, a middle cavity is formed between the movable seats, the middle cavity is rotationally connected with the movable seats through pin shafts, and four positioning grooves are fixedly connected to the circumference of the side wall of the middle cavity; a hand-screwing bolt is in threaded connection with the position, corresponding to the positioning groove, of the movable seat, the end of the hand-screwing bolt is inserted into the positioning groove, a threaded hole used for threaded connection of the hand-screwing bolt is formed in the movable seat, a driving motor is fixedly installed at the top of the middle cavity, and the middle cavity rotates between the movable seats and is matched with the hand-screwing bolt to be inserted into the positioning groove for limiting. Therefore, the middle cavity can be controlled to rotate and adjust by 90 degrees, the grinding disc is controlled to correspond to a plane or a vertical plane, and horizontal or vertical grinding is carried out.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a concrete surface grinding device for civil engineering. Background Art

[0002] Civil engineering is the general term for civil engineering and construction engineering. It is an engineering discipline that builds various facilities and places for human life, production, protection and other activities, covering buildings and structures in facilities and places within the scope of engineering such as aboveground, underground, on land, on water and underwater, such as floors, roads, railways, airports, bridges, water conservancy, ports, tunnels, water supply and drainage, and protection.

[0003] In the prior art with the publication (announcement) number: CN218284854U and the publication (announcement) date: 2023-01-13, a concrete surface grinding device for civil engineering is proposed, including a collection box, the left side of the collection box is fixedly connected to a main fan box, the left side of the main fan box is fixedly connected to a motor box, the front of the motor box is fixedly inlaid with a control panel, the upper surface of the motor box is fixedly connected to two carrier plates, the upper surfaces of the two carrier plates are jointly fixedly connected to a top plate, the bottom surface of the top plate is fixedly connected to a powerful motor, the inner bottom wall of the motor box and the inner top wall of the motor box are both fixedly inlaid with bearings, and the inner walls of the two bearings are jointly fixedly connected to a rotating rod. The utility model sets two main exhaust fans, which can extract dust from the motor box to prevent external dust from accumulating inside the motor box. By setting a conductive plate inside the collection box, the static electricity on the conductive plate can adsorb dust, which can effectively collect dust.

[0004] In the process of grinding the concrete surface, not only the horizontal surface needs to be grinded, but also the vertical surface needs to be grinded when necessary. However, the above application cannot effectively grind the vertical surface during actual use, which affects the actual processing effect. Therefore, a new concrete surface grinding device for civil engineering is proposed to optimize the above existing technology. Utility Model Content

[0005] The purpose of the utility model is to provide a concrete surface grinding device for civil engineering to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A concrete surface grinding device for civil engineering projects comprises a frame, wherein the front side of the frame is fixedly connected with guide rods in parallel and symmetrical manner, and movable seats are slidably connected to the corresponding two guide rods, an intermediate cavity is provided between the movable seats, the intermediate cavity is rotatably connected to the movable seat through a pin shaft, four positioning grooves are fixedly connected to the circumference of the side wall of the intermediate cavity, hand bolts are threadedly connected at the corresponding positioning grooves on the movable seat, the ends of the hand bolts are inserted into the positioning grooves, and threaded holes for threaded connection of the hand bolts are provided on the movable seat, a driving motor is fixedly installed on the top of the intermediate cavity, a rotating shaft is rotatably connected to the inner side of the top of the intermediate cavity, the output end of the driving motor is inserted into the intermediate cavity and fixedly connected to the rotating shaft, and a grinding disc is fixedly connected to the bottom end of the rotating shaft.

[0008] As a further solution of the utility model: the outer side of the frame corresponding to the movable seat is rotatably connected with a screw rod, the outer side threaded sleeve of the screw rod is provided with a thread sleeve compatible with it, the thread sleeve is fixedly connected to the movable seat, a dual-axis motor is fixedly installed between the top ends of the frame corresponding to the screw rod, the output end of the dual-axis motor is fixedly connected to the first bevel gear through a connecting shaft, the connecting shaft is rotatably connected to the frame, the top end of the screw rod is fixedly connected to the second bevel gear, and the second bevel gear is meshed with the first bevel gear for transmission.

[0009] As a further solution of the utility model: the bottom surface of the middle cavity is fixedly connected with an accordion sleeve, the bottom end of the accordion sleeve is fixedly connected with a baffle, a ball wheel is installed on the outer circumference of the baffle, and an air spring strut is fixedly connected between the baffle and the middle cavity.

[0010] As a further solution of the utility model: a dust box is fixedly installed in the upper rear part of the frame, the air inlet of the dust box is connected to the air outlet of the middle cavity through a telescopic bellows, a fan is fixedly installed at the top air outlet of the dust box, and a dust filter cover is fixedly installed at the corresponding air outlet inside the dust box.

[0011] As a further solution of the utility model: the dust box is provided with a material taking port, a sealing plate is provided outside the material taking port, the sealing plate is fixed to the dust box by bolts, a through hole for the bolt to pass through is opened on the sealing plate, and a threaded hole for the bolt threaded connection is opened on the dust box.

[0012] As a further solution of the utility model: a push handle is fixedly installed on the top surface of the rear side of the frame, and universal casters are fixedly installed on the four corners of the bottom surface of the frame.

[0013] As a further solution of the utility model: a mobile power source is fixedly installed in the rear bottom of the frame, a switch is fixedly installed on the frame, the switch is electrically connected to the mobile power source through a wire, and the drive motor, dual-axis pad and fan are all electrically connected to the switch through a wire.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The middle cavity of the utility model rotates between the movable seats and is limited by the hand-tightened bolt inserted into the positioning groove, so that the middle cavity can be controlled to rotate and adjust 90 degrees, and the grinding disc can be controlled to correspond to the plane or vertical surface for horizontal or vertical grinding.

[0016] 2. The double-axis motor cooperates with the first bevel gear and the second bevel gear to drive the screw to rotate, and then the movable seat is driven up and down through the thread sleeve, thereby driving the middle cavity to move up and down. In this way, the contact between the grinding disc and the concrete floor can be conveniently controlled during horizontal grinding. At the same time, the grinding disc can be controlled to move up and down during vertical grinding to perform grinding operations.

[0017] 3. The dust box cooperates with the fan and the dust filter to extract and filter. The dust box is connected with the middle cavity through the setting of the telescopic bellows, so as to deal with the dust in the concrete grinding process. At the same time, the grinding position is isolated and protected by the accordion sleeve, which effectively avoids the diffusion of dust, so that the device has the effect of reducing dust during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a structural schematic diagram of a concrete surface grinding device for civil engineering.

[0019] Figure 2 The present invention is a rear perspective view of a concrete surface grinding device for civil engineering.

[0020] Figure 3 The present invention is a side view showing the middle cavity of a concrete surface grinding device used in civil engineering.

[0021] Figure 4 The present invention is a cross-sectional view of a concrete surface grinding device for civil engineering.

[0022] In the figure: 1. frame; 2. guide rod; 3. movable seat; 4. mobile power supply; 5. middle cavity; 6. positioning groove; 7. hand-tightening bolt; 8. driving motor; 9. rotating shaft; 10. grinding disc; 11. screw rod; 12. thread sleeve; 13. double-axis motor; 14. first bevel gear; 15. second bevel gear; 16. accordion sleeve; 17. baffle; 18. ball wheel; 19. air spring strut; 20. dust box; 21. telescopic bellows; 22. fan; 23. dust filter cover; 24. sealing plate; 25. push handle; 26. universal caster; 27. switch. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 4 In the embodiment of the utility model, a concrete surface grinding device for civil engineering includes a frame 1, a guide rod 2 is fixedly connected to the front side of the frame 1 in parallel and symmetrically, a movable seat 3 is slidably connected to the corresponding two guide rods 2, an intermediate cavity 5 is provided between the movable seats 3, the intermediate cavity 5 is rotatably connected to the movable seat 3 through a pin, four positioning grooves 6 are fixedly connected to the side wall circumference of the intermediate cavity 5, hand bolts 7 are threadedly connected at the corresponding positioning grooves 6 on the movable seat 3, the ends of the hand bolts 7 are inserted into the positioning grooves 6, and threaded holes for threaded connection of the hand bolts 7 are opened on the movable seat 3, a driving motor 8 is fixedly installed on the top of the intermediate cavity 5, a rotating shaft 9 is rotatably connected to the inner side of the top of the intermediate cavity 5, the output end of the driving motor 8 is inserted into the intermediate cavity 5 and fixedly connected to the rotating shaft 9, and a grinding disc 10 is fixedly connected to the bottom end of the rotating shaft 9.

[0025] The middle cavity 5 rotates between the movable seats 3 and is limited by the hand-tightened bolts 7 inserted into the positioning slots 6, so that the middle cavity 5 can be controlled to rotate 90° and the grinding disc 10 can be controlled to correspond to the plane or vertical surface for horizontal or vertical grinding.

[0026] The outer sides of the movable seats 3 corresponding to the frame 1 are rotatably connected with screw rods 11, and the outer threaded sleeves of the screw rods 11 are provided with thread sleeves 12 matched therewith, and the thread sleeves 12 are fixedly connected to the movable seat 3. A dual-axis motor 13 is fixedly installed between the top ends of the corresponding screw rods 11 of the frame 1, and the output ends of the dual-axis motor 13 are fixedly connected to the first bevel gear 14 through a connecting shaft, and the connecting shaft is rotatably connected to the frame 1, and the top ends of the screw rods 11 are fixedly connected to the second bevel gear 15, which meshes with the first bevel gear 14 for transmission.

[0027] The double-axis motor 13 cooperates with the first bevel gear 14 and the second bevel gear 15 to drive the screw rod 11 to rotate, and then drives the movable seat 3 to move up and down through the thread sleeve 12, thereby driving the middle cavity 5 to move up and down, so that during horizontal grinding, it is convenient to control the grinding disc 10 to contact the concrete floor, and at the same time, the grinding disc 10 can be controlled to move up and down during vertical grinding to perform grinding operations.

[0028] A dust box 20 is fixedly installed in the upper rear part of the frame 1. The air inlet of the dust box 20 is connected to the air outlet of the middle cavity 5 through a telescopic bellows 21. A fan 22 is fixedly installed at the top air outlet of the dust box 20. A dust filter cover 23 is fixedly installed at the corresponding air outlet inside the dust box 20.

[0029] An accordion sleeve 16 is fixedly connected to the bottom surface of the middle cavity 5, and a baffle 17 is fixedly connected to the bottom end of the accordion sleeve 16. A ball wheel 18 is installed on the outer circumference of the baffle 17. The baffle 17 cooperates with the ball wheel 18 to facilitate the synchronous movement of the accordion sleeve 16 on the polishing surface during the movement. An air spring strut 19 is fixedly connected between the baffle 17 and the middle cavity 5, and the air spring strut 19 is an existing product on sale.

[0030] The dust box 20 is provided with a material taking port, and a sealing plate 24 is provided outside the material taking port. The sealing plate 24 is fixed to the dust box 20 by bolts. The sealing plate 24 is provided with through holes for the bolts to pass through, and the dust box 20 is provided with threaded holes for the bolts to be threadedly connected.

[0031] The dust box 20 cooperates with the fan 22 and the dust filter 23 to perform exhaust filtration, and the dust box 20 is connected to the middle cavity 5 by the setting of the telescopic bellows 21, so as to deal with the dust in the concrete grinding process. At the same time, the grinding position is isolated and protected by the accordion sleeve 16, which effectively avoids the diffusion of dust, so that the device has the effect of reducing dust during the grinding process.

[0032] A push handle 25 is fixedly mounted on the rear top surface of the frame 1 , and universal casters 26 are fixedly mounted on the four corners of the bottom surface of the frame 1 .

[0033] The frame 1 can be moved by the push handle 25 in conjunction with the universal caster 26, thereby moving the entire device.

[0034] A mobile power source 4 is fixedly installed in the rear bottom of the frame 1, and a switch 27 is fixedly installed on the frame 1. The switch 27 is electrically connected to the mobile power source 4 through a wire, and the drive motor 8, the dual-axis pad 13 and the fan 22 are all electrically connected to the switch 27 through a wire.

[0035] The working principle of the utility model is:

[0036] When in use, the device is moved by the push handle 25 in cooperation with the universal caster 26, the screw rod 11 is driven by the double-axis motor 13 in cooperation with the first bevel gear 14 and the second bevel gear 15, and the movable seat 3 is driven downward by the cooperation of the thread sleeve 12, so that the grinding disc 10 is against the concrete floor, and the driving motor 8 drives the grinding disc 10 to rotate through the rotating shaft 9 to grind the concrete surface.

[0037] When the grinding disc 10 is against the bottom surface, the baffle 17 reversely squeezes the air spring strut 19 to shrink, causing the accordion sleeve 16 to shrink, so that the bottom end of the accordion sleeve 16 is close to the grinding surface, reducing the gap, thereby restraining the generated dust, and exhausting the air through the fan 22, so that the air at the grinding disc 10 is passed through the accordion sleeve 16, the middle cavity 5, and the telescopic bellows 21 into the dust collection box 20, and is discharged through the dust filter cover 23, forming an exhaust and dust reduction effect.

[0038] When grinding vertically, the hand-tightening bolt 7 is turned to fall off the positioning groove 6. At this time, the middle cavity 5 is rotated and fixed again by the hand-tightening bolt 7 in cooperation with the positioning groove 6 to adapt to the vertical concrete. At this time, the double-axis motor 13 can cooperate with the first bevel gear 14 and the second bevel gear 15 to drive the screw rod 11, and the movable seat 3 is driven up and down through the cooperation of the thread sleeve 12, so as to control the grinding disc 10 to grind the concrete surface vertically up and down.

[0039] When the grinding disc 10 moves for grinding, the blocking piece 17 can move synchronously on the grinding surface through the ball wheel 18 .

[0040] After the grinding process is completed, the sealing plate 24 can be opened to clean the filtered dust.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete surface grinding device for civil engineering, comprising a frame (1), characterized in that: The front side of the frame (1) is fixedly connected with guide rods (2) in parallel and symmetrical manner, and movable seats (3) are slidably connected to the two corresponding guide rods (2). An intermediate cavity (5) is provided between the movable seats (3). The intermediate cavity (5) is rotatably connected to the movable seat (3) through a pin shaft. Four positioning grooves (6) are fixedly connected to the circumference of the side wall of the intermediate cavity (5). Hand bolts (7) are threadedly connected to the corresponding positioning grooves (6) on the movable seat (3). The ends of the hand bolts (7) are inserted into the positioning grooves (6). A driving motor (8) is fixedly installed on the top of the intermediate cavity (5). A rotating shaft (9) is rotatably connected to the inner side of the top of the intermediate cavity (5). The output end of the driving motor (8) is inserted into the intermediate cavity (5) and fixedly connected to the rotating shaft (9). The bottom end of the rotating shaft (9) is fixedly connected to a grinding disc (10).

2. The concrete surface grinding device for civil engineering according to claim 1, characterized in that: The frame (1) is rotatably connected to the outer side of the corresponding movable seat (3), the outer side of the screw rod (11) is provided with a threaded sleeve (12) matched therewith, the threaded sleeve (12) is fixedly connected to the movable seat (3), a double-axis motor (13) is fixedly installed between the top ends of the frame (1) and the corresponding screw rods (11), the output end of the double-axis motor (13) is fixedly connected to a first bevel gear (14) via a connecting shaft, the connecting shaft is rotatably connected to the frame (1), the top end of the screw rod (11) is fixedly connected to a second bevel gear (15), and the second bevel gear (15) is meshed with the first bevel gear (14) for transmission.

3. The concrete surface grinding device for civil engineering according to claim 1, characterized in that: The bottom surface of the intermediate cavity (5) is fixedly connected to an accordion sleeve (16), the bottom end of the accordion sleeve (16) is fixedly connected to a baffle (17), a ball wheel (18) is installed on the outer circumference of the baffle (17), and an air spring strut (19) is fixedly connected between the baffle (17) and the intermediate cavity (5).

4. The concrete surface grinding device for civil engineering according to claim 1, characterized in that: A dust box (20) is fixedly installed in the upper rear part of the frame (1); an air inlet of the dust box (20) is connected to an air outlet of the middle cavity (5) via a telescopic bellows (21); a fan (22) is fixedly installed at the top air outlet of the dust box (20); and a dust filter screen (23) is fixedly installed at the inside of the dust box (20) corresponding to the air outlet.

5. The concrete surface grinding device for civil engineering according to claim 4, characterized in that: The dust box (20) is provided with a material taking port, and a sealing plate (24) is provided outside the material taking port. The sealing plate (24) is fixedly mounted to the dust box (20) by bolts.

6. The concrete surface grinding device for civil engineering according to claim 1, characterized in that: A push handle (25) is fixedly mounted on the top surface of the rear side of the frame (1), and universal casters (26) are fixedly mounted on the four corners of the bottom surface of the frame (1).

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