Steel bar rust removal device for civil construction

Abstract

The utility model relates to the field of steel bar rust removal, and discloses a steel bar rust removal device for civil construction, a mounting housing is fixed on an angle grinder, a round hole is formed in the cut part of the lower part of the mounting housing close to the front side, a communicating gap is further formed in the front side of the lower part of the mounting housing, and the communicating gap is communicated with the round hole; a rotating ring is rotatably mounted in the mounting housing, a sleeving notch is formed in the cut part of the rotating ring and communicates with the inner ring of the rotating ring, a fixed arc plate is mounted on the inner ring of the rotating ring through a screw, and a plurality of uniformly distributed polishing brushes are arranged on the inner side of the fixed arc plate; the circular hole and the communicating notch are formed in the mounting housing, and the sleeving notch is formed in the rotating ring, so that the reinforcing steel bar directly passes through the communicating notch and the sleeving notch to be arranged in the device and make contact with the polishing brush, and then the reinforcing steel bar can be rapidly arranged in the device to be polished and derusted.

Description

Technical Field

[0001] The utility model relates to the field of steel bar rust removal, in particular to a steel bar rust removal device used in civil construction. Background Art

[0002] Civil construction sites often require a large amount of building materials such as steel bars. Due to untimely daily protection, the steel bars stored on site are often rusted. In order to ensure construction quality, according to relevant requirements, the rusted steel bars must be derusted before use.

[0003] A Chinese utility model patent, published as CN221338024U, discloses a rebar rust removal device. When in use, the rebar is inserted into the inner side of an inner ring. The inner ring rotates under the action of a drive mechanism, driving the rust removal brush to remove rust from the rebar surface. The telescopic rod can be adjusted in length to accommodate rebars of varying diameters. This device improves the efficiency of rebar rust removal, saves cleaning time, and enhances both the effectiveness and quality of the cleaning process.

[0004] The inventors believe that the above-mentioned related technologies have the following drawbacks: The above-mentioned devices require one end to be attached to the outside of the steel bar before they can be used. If both ends of the steel bar are blocked, the device cannot be attached to the steel bar, and the device cannot remove rust from the steel bar surface. Therefore, we have designed a steel bar rust removal device for civil engineering construction. Utility Model Content

[0005] In order to solve the technical problem that both ends of the steel bar are blocked and cannot be sleeved, and the device cannot remove rust on the surface of the steel bar, the utility model provides a steel bar rust removal device for civil construction.

[0006] The utility model is implemented by the following technical solution: a steel bar rust removal device for civil construction, comprising an angle grinder, an output shaft rotatably provided on the angle grinder, a mounting cover fixed on the angle grinder, a cover plate mounted on the mounting cover, a circular hole formed by cutting away a portion of a lower front side of the mounting cover, and a communicating notch further provided on the lower front side of the mounting cover, the communicating notch being connected to the circular hole;

[0007] A rotating ring is rotatably installed inside the mounting cover, a sleeve notch is formed on the removed portion of the rotating ring, and the sleeve notch is connected to the inner ring of the rotating ring, a fixed arc plate is installed on the inner ring of the rotating ring by screws, and a plurality of evenly distributed grinding brushes are arranged on the inner side of the fixed arc plate.

[0008] As a further improvement of the above scheme, the mounting cover is rotatably connected to the output shaft, and a driving pulley is also provided on the output shaft. Driven pulleys are rotatably installed on both ends of the mounting cover through bearings and axle pins. The driven pulley is connected to the driving pulley for transmission through a transmission toothed belt. The angle grinder can rotate the rotating ring through the driving pulley and the driven pulley, so that the internal grinding brush rotates accordingly, and can grind and remove rust from the surface of the steel bar placed on the inner ring of the fixed arc plate.

[0009] As a further improvement of the above-mentioned scheme, the outer ring surface of the rotating ring is provided with a plurality of transmission tooth grooves distributed in a circular array, and the lower ends of the two driven pulleys are integrated with transmission gears, and the transmission gears are meshed with the transmission gears for transmission. The transmission gears are installed on the shaft pins of the driven pulleys, which enables the transmission gears to rotate together with the driven pulleys, thereby enabling the rotating ring to rotate under the action of the angle grinder.

[0010] As a further improvement of the above solution, the straight-line distance between the two transmission gears is greater than the arc length of the connecting gap. When part of the rotating ring rotates into the connecting gap, one of the transmission gears can still engage with the transmission tooth groove on the rotating ring, thereby facilitating its rotation without disengagement.

[0011] As a further improvement of the above-mentioned solution, a guide pulley is rotatably installed inside the mounting cover through bearings and axle pins. The transmission toothed belt is in rolling contact with the guide pulley, and the guide pulley does not contact the rotating ring. The guide pulley can tension and guide the transmission toothed belt so that the transmission toothed belt is away from the rotating ring and does not interfere with its normal operation.

[0012] As a further improvement of the above solution, the bottom of the mounting cover and the inner side of the cover plate are thickened, and the bottom of the mounting cover and the inner side of the cover plate are provided with an arc-shaped guide groove, and there is a 1-2mm gap between the inner wall of the mounting cover and the cover plate and the rotating ring. The inner wall of the mounting cover and the cover plate are not in direct contact with the surface of the rotating ring, which reduces the friction resistance between them and facilitates the rotation of the rotating ring.

[0013] As a further improvement of the above-mentioned solution, mounting grooves are provided on the upper and lower surfaces of the rotating ring, and a plurality of bull's-eye balls distributed in a ring are rolling in the mounting grooves. The bull's-eye balls are in rolling contact with the guide grooves, which can support the rotating ring, so that the rotating ring does not directly contact the mounting cover and the cover plate, thereby reducing the friction resistance between them and facilitating the rotation of the rotating ring.

[0014] As a further improvement of the above-mentioned scheme, the size of the sleeve notch is larger than the outer diameter of the steel bar, and the inner diameter of the circular structure formed by the inner ends of multiple grinding brushes is smaller than the outer diameter of the steel bar. The steel bar can be directly placed in the grinding brush through the connecting notch and the sleeve notch and can contact the grinding brush, thereby facilitating the grinding brush to grind and remove rust on its surface.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model provides a mounting cover on the angle grinder, in which a rotating ring is rotatably mounted, and the rotating ring is connected to the output shaft of the angle grinder through a transmission structure, so that the grinding brush in the rotating ring can rotate accordingly, thereby grinding and removing rust from the outer ring surface of the steel bar;

[0017] 2. By setting a circular hole and a connecting notch on the mounting cover, and a sleeve notch on the rotating ring, the steel bar can be placed inside the device directly through the connecting notch and the sleeve notch and contact the grinding brush, so that the steel bar can be quickly placed in the device and the grinding and rust removal operation can be carried out, which improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a steel bar rust removal device for civil construction provided by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the rear side;

[0020] Figure 3 for Figure 1 Front view of ;

[0021] Figure 4 for Figure 2 A schematic diagram of a structure in which no cover plate is provided;

[0022] Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram;

[0023] Figure 6 for Figure 4 Front view diagram of .

[0024] Description of main symbols:

[0025] 1. Angle grinder; 11. Output shaft; 12. Driving pulley; 2. Mounting cover; 21. Cover plate; 22. Connecting notch; 3. Fixed arc plate; 31. Grinding brush; 4. Rotating ring; 41. Mounting groove; 42. Bull's eye ball bearing; 43. Transmission tooth groove; 44. Socket notch; 5. Driven pulley; 51. Guide pulley; 6. Transmission toothed belt; 7. Transmission gear. DETAILED DESCRIPTION

[0026] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figures 1-6 The present embodiment is a steel bar rust removal device for civil engineering construction, comprising an angle grinder 1, an output shaft 11 being rotatably provided on the angle grinder 1, a mounting cover 2 being fixed to the angle grinder 1, a cover plate 21 being mounted on the mounting cover 2, a circular hole being formed by cutting away a portion of the lower front side of the mounting cover 2, and a connecting notch 22 being further provided on the lower front side of the mounting cover 2, the connecting notch 22 being connected to the circular hole;

[0029] A rotating ring 4 is rotatably installed inside the mounting cover 2. A sleeve notch 44 is formed by cutting away a portion of the rotating ring 4, and the sleeve notch 44 is connected to the inner ring of the rotating ring 4. A fixed arc plate 3 is installed on the inner ring of the rotating ring 4 by screws, and a plurality of evenly distributed grinding brushes 31 are provided on the inner side of the fixed arc plate 3.

[0030] The mounting cover 2 is rotatably connected to the output shaft 11, and a driving pulley 12 is also provided on the output shaft 11. Driven pulleys 5 are rotatably installed on both left and right ends of the mounting cover 2 through bearings and shaft pins. The driven pulley 5 is connected to the driving pulley 12 for transmission through a transmission toothed belt 6. The angle grinder 1 can rotate the rotating ring 4 through the driving pulley 12 and the driven pulley 5, so that the internal grinding brush 31 rotates accordingly, and can grind and remove rust from the surface of the steel bars placed on the inner ring of the fixed arc plate 3.

[0031] The outer ring surface of the rotating ring 4 is provided with a plurality of transmission tooth grooves 43 distributed in a circular array. The lower ends of the two driven pulleys 5 are integrated with transmission gears 7. The transmission gears 7 are engaged with the transmission gears 7 for transmission. The transmission gears 7 are installed on the shaft pins of the driven pulleys 5, which enables the transmission gears 7 to rotate together with the driven pulleys 5, thereby enabling the rotating ring 4 to rotate under the action of the angle grinder 1.

[0032] The straight-line distance between the two transmission gears 7 is greater than the arc length of the connecting gap 22. When part of the rotating ring 4 rotates into the connecting gap 22, one of the transmission gears 7 can still engage with the transmission tooth groove 43 on the rotating ring 4, thereby facilitating its rotation without disengagement.

[0033] A guide pulley 51 is rotatably installed inside the mounting cover 2 through bearings and axle pins. The transmission toothed belt 6 is in rolling contact with the guide pulley 51, and the guide pulley 51 does not contact the rotating ring 4. The guide pulley 51 can tension and guide the transmission toothed belt 6 so that the transmission toothed belt 6 is away from the rotating ring 4 and does not interfere with its normal operation.

[0034] The bottom of the mounting cover 2 and the inner side of the cover plate 21 are both thickened, and an arc-shaped guide groove is provided on the bottom of the mounting cover 2 and the inner side of the cover plate 21. There is a 1-2mm gap between the inner wall of the mounting cover 2 and the cover plate 21 and the rotating ring 4. The inner wall of the mounting cover 2 and the cover plate 21 are not in direct contact with the surface of the rotating ring 4, which reduces the friction resistance between them and facilitates the rotation of the rotating ring 4.

[0035] The upper and lower surfaces of the rotating ring 4 are both provided with mounting grooves 41, and a plurality of bull's eye balls 42 distributed in a ring are rollingly arranged in the mounting grooves 41. The bull's eye balls 42 are in rolling contact with the guide grooves, which can support the rotating ring 4, so that the rotating ring 4 is not in direct contact with the mounting cover 2 and the cover plate 21, thereby reducing the friction resistance between them and facilitating the rotation of the rotating ring 4.

[0036] The size of the sleeve notch 44 is larger than the outer diameter of the steel bar, and the inner diameter of the circular structure formed by the inner ends of multiple grinding brushes 31 is smaller than the outer diameter of the steel bar. The steel bar can be directly placed in the grinding brush 31 through the connecting notch 22 and the sleeve notch 44 and can contact the grinding brush 31, thereby facilitating the grinding brush 31 to grind and remove rust on its surface.

[0037] The implementation principle of a steel bar rust removal device for civil engineering construction in the embodiment of the present application is as follows: when grinding the steel bar, the user holds the two handles of the angle grinder 1 with both hands, and then places the steel bar into the fixed arc plate 3 through the connecting notch 22 and the sleeve notch 44. Since the inner diameter of the circular structure formed by the inner ends of the multiple grinding brushes 31 is smaller than the outer diameter of the steel bar, the grinding brushes 31 can contact the surface of the steel bar;

[0038] After that, the power of the angle grinder 1 is turned on, and the output shaft 11 in the angle grinder 1 will rotate under the action of its internal motor. Since a driving pulley 12 is provided on the output shaft 11, and the driving pulley 12 is connected to the two driven pulleys 5 through a transmission toothed belt 6, and the lower end of the driven pulley 5 is integrally provided with a transmission gear 7, the transmission gear 7 is engaged with the rotating ring 4 through the transmission tooth groove 43, so that the entire rotating ring 4 can rotate 360 ​​degrees, and the built-in multiple grinding brushes 31 will rotate therewith, thereby being able to grind the outer surface of the steel bar as a whole. During the grinding process, the user only needs to hold the angle grinder 1 and move it accordingly;

[0039] By providing a mounting cover 2 on the angle grinder 1, a rotating ring 4 is rotatably mounted in the mounting cover 2, and the rotating ring 4 is connected to the output shaft 11 of the angle grinder 1 through a transmission structure, so that the grinding brush 31 in the rotating ring 4 can rotate accordingly, thereby grinding and removing rust from the outer ring surface of the steel bar;

[0040] By providing a circular hole and a connecting notch 22 on the mounting cover 2, and providing a sleeve notch 44 on the rotating ring 4, the steel bar can be placed inside the device directly through the connecting notch 22 and the sleeve notch 44 and contact the grinding brush 31, thereby enabling the steel bar to be quickly placed in the device and subjected to grinding and rust removal operations, thereby improving convenience.

[0041] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A steel bar rust removal device for civil construction, comprising an angle grinder (1), wherein an output shaft (11) is rotatably provided on the angle grinder (1), characterized in that: A mounting cover (2) is fixed to the angle grinder (1), a cover plate (21) is mounted on the mounting cover (2), a circular hole is formed by cutting away a portion of the lower front side of the mounting cover (2), and a connecting notch (22) is also provided on the lower front side of the mounting cover (2), the connecting notch (22) being connected to the circular hole; A rotating ring (4) is rotatably mounted inside the mounting housing (2), a sleeve notch (44) is formed by cutting away a portion of the rotating ring (4), and the sleeve notch (44) is communicated with the inner ring of the rotating ring (4), a fixed arc plate (3) is mounted on the inner ring of the rotating ring (4) via screws, and a plurality of evenly distributed grinding brushes (31) are provided on the inner side of the fixed arc plate (3).

2. A steel bar rust removal device for civil construction as claimed in claim 1, characterized in that: The mounting housing (2) is rotatably connected to the output shaft (11), and a driving pulley (12) is also provided on the output shaft (11). Driven pulleys (5) are rotatably mounted on both left and right ends of the mounting housing (2) via bearings and axle pins, and the driven pulley (5) is connected to the driving pulley (12) for transmission via a transmission toothed belt (6).

3. A steel bar rust removal device for civil construction as claimed in claim 2, characterized in that: The outer surface of the rotating ring (4) is provided with a plurality of transmission tooth grooves (43) distributed in a circumferential array, and the lower ends of the two driven pulleys (5) are both integrally provided with transmission gears (7), and the transmission gears (7) are meshed with each other for transmission.

4. A steel bar rust removal device for civil construction as claimed in claim 3, characterized in that: The straight-line distance between the two transmission gears (7) is greater than the arc length of the connecting gap (22).

5. A steel bar rust removal device for civil construction as claimed in claim 2, characterized in that: A guide pulley (51) is rotatably mounted inside the mounting housing (2) via a bearing and an axle pin. The transmission toothed belt (6) is in rolling contact with the guide pulley (51), and the guide pulley (51) does not contact the rotating ring (4).

6. A steel bar rust removal device for civil construction as claimed in claim 1, characterized in that: The bottom of the mounting housing (2) and the inner side of the cover plate (21) are both thickened, and the bottom of the mounting housing (2) and the inner side of the cover plate (21) are provided with an arc-shaped guide groove, and a gap of 1-2 mm is provided between the inner wall of the mounting housing (2) and the cover plate (21) and the rotating ring (4).

7. A steel bar rust removal device for civil construction as claimed in claim 6, characterized in that: The upper and lower surfaces of the rotating ring (4) are both provided with mounting grooves (41), and a plurality of annularly distributed bull's eye balls (42) are rollingly arranged in the mounting grooves (41), and the bull's eye balls (42) are in rolling contact with the guide grooves.

8. The steel bar rust removal device for civil construction as claimed in claim 1, characterized in that: The size of the sleeve notch (44) is larger than the outer diameter of the steel bar, and the inner diameter of the circular structure formed by the inner ends of the plurality of grinding brushes (31) is smaller than the outer diameter of the steel bar.

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