Nut rust removal brush

Abstract

The utility model relates to the technical field of rust removal, in particular to a nut rust removal brush. Comprising a column body, a groove with a hexagonal section is concentrically formed in the lower portion of the column body, a round hole is concentrically formed in the upper portion of the column body and communicated with the groove, lifting blocks are elastically and slidably connected to the wall of the groove in the vertical direction, side bristles are fixed to the sides, facing the center of the column body, of the lifting blocks, and hemispherical lower protruding blocks are fixed to the upper ends of the lifting blocks; a rotating sleeve is rotationally arranged in the round hole, an upper protruding block corresponding to the lifting block is fixed to the lower end of the rotating sleeve, the upper protruding block is hemispherical, a driving assembly for driving the rotating sleeve to rotate is arranged on the column body, and an outer sleeve is concentrically fixed to the outer side of the upper end of the column body. A traditional complex linkage mechanism is replaced with gear and gear ring meshing transmission, the number of parts and the assembling complexity are greatly reduced, and the manufacturing cost is reduced. The lifting block, the rotating sleeve, the end face grinding assembly and other modules achieve functions through elastic sliding and mechanical linkage, a redundant structure is avoided, and reliability and maintenance convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of rust removal technology, specifically to a rust removal brush for nuts. Background Technology

[0002] After assembly, nuts are easily corroded by external environmental factors. When a suitable wrench is used to clamp and rotate a corroded bolt, the corroded part will deform under force, which will cause the end size of the hexagonal nut to become smaller, thus affecting the rotation of the bolt by the wrench.

[0003] The existing method for removing rust from nuts involves using an angle grinder connected to a rust-removing steel brush, with the rotating brush removing the rust. However, because nuts have multiple protruding ridges on the outside, the rust-removing steel brush encounters significant resistance upon contact, easily leading to damage to the brush or misalignment of the angle grinder. In severe cases, this can cause sprains to the worker's arm holding the grinder. Therefore, removing rust from nuts is a relatively dangerous process.

[0004] For example, patent document CN221390816U discloses a rust-removing collet wrench. To facilitate nut removal, a shock-absorbing spring first connects the outer plate to a slot inside a pressure plate. A horizontally placed guide rod inside the outer plate passes through a hole inside the pressure plate, and a positioning ring is located in the hole inside the pressure plate and fixed to the guide rod inside the outer plate. Two second rollers and one first roller are movably mounted inside the outer plate, while a grinding belt is driven and connected to the outside of the two second rollers and one first roller. Multiple bolts fix a washer to the top of the pressure plate, and a clamping ring fixed to the top of the pressure plate is located inside the washer. A ring gear is movably mounted in the gap between the clamping ring and the washer. When the user... When the lever is gripped and the motor is started, the auxiliary turntable fixed to the top of the motor's inner shaft drives the tracks to rotate. The pressure pad, fixed to the beam plate, provides a stable support platform for the rotating ring gear. As the ring gear rotates at high speed, when the outer walls of multiple grinding belts come into contact with the hexagonal nut end of the bolt, the rotating ring gear drives multiple linkage rods to rotate at the same speed. The linkage rods, fixed to the clamp plate, then drive the gears outside the first rollers. The six grinding belts then perform adaptive rust removal on the hexagonal nut end of the bolt. This technical solution uses the rotation of multiple grinding belts to grind and remove rust from the outer force-bearing surface of the nut. However, the transmission component that transmits power to the grinding belts has a complex structure, high manufacturing cost, and a high failure rate during use. When anti-corrosion treatment is required after grinding and removing rust from the hexagonal head of the bolt, this technical solution cannot grind the end face of the hexagonal head away from the bolt shank. Utility Model Content

[0005] The main purpose of this utility model is to provide a nut rust removal brush that has low manufacturing cost, low failure rate during use, and can grind the end face of the hexagonal head of the bolt away from the screw.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] The nut rust removal brush includes a column. The lower part of the column has a concentric hexagonal groove. The upper part of the column has a concentric circular hole that communicates with the groove. Lifting blocks are elastically slidably connected to the groove wall in the vertical direction. Side brush bristles are fixed on the side of the lifting block facing the center of the column. A hemispherical lower protrusion is fixed to the upper end of each lifting block. A rotating sleeve is rotatably installed in the circular hole. The lower end of the rotating sleeve is fixed with an upper protrusion corresponding to the lifting block. The upper protrusion is hemispherical. A drive assembly for driving the rotating sleeve to rotate is installed on the column. An outer sleeve is concentrically fixed to the outer side of the upper end of the column. An end face grinding assembly is concentrically elastically slidably installed on the outer sleeve in the vertical direction.

[0008] Specifically, a slider is fixed on the side of the lifting block away from the axis of the column. A vertical groove is provided on the groove wall of the groove. The slider is slidably engaged in the groove. The upper end of the slider is connected to the column through a tension spring. A gap is provided between the lower end of the lifting block and the lower end of the column to allow the lifting block to move downward.

[0009] Specifically, the drive assembly includes an external motor fixedly connected to the column, the axis of the external motor being parallel to the axis of the column, a gear being concentrically fixed on the output shaft of the external motor, and a gear ring being concentrically fixed on the outer side of the rotating sleeve, with the gear meshing with the gear ring.

[0010] Specifically, the rotating sleeve and the column are rotatably connected via bearings.

[0011] Specifically, a handle is fixed to the outside of the outer casing.

[0012] Specifically, the end face grinding assembly includes a square rod, the lower end of which is located inside the outer sleeve. An inner motor is concentrically fixed to the lower end of the square rod. The inner motor is concentric with the square rod. A turntable is concentrically fixed to the output shaft of the inner motor. End brush bristles are fixed to the lower end of the turntable. A pressure plate is fixed to the upper end of the square rod. A sleeve is concentrically fixed to the outer sleeve. The square rod passes through the sleeve and is slidably connected to the sleeve. The pressure plate is connected to the sleeve by a spring.

[0013] Specifically, both the end bristles and the side bristles are made of steel wire.

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

[0015] 1. Gear and ring gear meshing transmissions replace traditional complex linkage mechanisms, significantly reducing the number of parts and assembly complexity, and lowering manufacturing costs. Modules such as lifting blocks, rotating sleeves, and end-face grinding components achieve their functions through elastic sliding and mechanical linkage, avoiding redundant structures and improving reliability and ease of maintenance.

[0016] 2. The side brush bristles move elastically up and down. Through the periodic contact between the hemispherical upper protrusion on the rotating sleeve and the lower hemispherical lower protrusion on the lifting block, the side brush bristles reciprocate, removing rust along the parallel direction of the nut's side surface, reducing resistance and wear. The end brush bristles adaptively press down: The end face grinding component uses spring elastic extension and contraction to allow the end brush bristles to automatically conform to the nut's end face. Combined with the internal motor-driven rotation, this achieves efficient end face grinding. The side and end face rust removal functions can be activated individually or simultaneously to adapt to different working conditions and improve work efficiency.

[0017] 3. The vertical movement of the side bristles avoids the radial resistance of traditional rotating bristles, preventing tool deviation or jamming. The rotation direction of the end bristles is parallel to the end face being ground, which can prevent the end bristles from experiencing large resistance during rotation, thus avoiding injury caused by the rust removal brush deviating a large distance.

[0018] 4. The side brush bristles and end brush bristles are installed independently, and can be replaced separately when damaged, reducing maintenance costs.

[0019] 5. This rust removal brush is suitable for rust removal scenarios in narrow spaces or requiring delicate operation, such as inside mechanical equipment, combining functionality and portability. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention.

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the column.

[0022] The parts in the attached diagram are named as follows: 1. Column, 2. Lifting block, 3. Slide groove, 4. Slider, 5. Tension spring, 6. Side brush, 7. Lower protrusion, 8. Rotating sleeve, 9. Upper protrusion, 10. Bearing, 11. External motor, 12. Gear, 13. Gear ring, 14. Outer sleeve, 15. Handle, 16. Sleeve, 17. Square rod, 18. Spring, 19. Pressure plate, 20. Nut, 21. Turntable, 22. Internal motor, 23. End brush. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1: Refer to Figures 1-2As shown, the nut rust removal brush includes a column 1, and the lower part of the column 1 has a concentric groove with a hexagonal cross-section.

[0025] A circular hole is concentrically opened in the upper part of the column 1, and the circular hole is connected to the groove.

[0026] Lifting blocks 2 are elastically slidably connected to the vertical walls of the groove. Specifically, a slider 4 is fixed to the side of the lifting block 2 away from the axis of the column 1. A vertical groove 3 is provided on the groove wall. The slider 4 is slidably engaged in the groove 3. The upper end of the slider 4 is connected to the column 1 by a tension spring 5. A gap is provided between the lower end of the lifting block 2 and the lower end of the column 1 to allow the lifting block 2 to move downward.

[0027] A side brush 6, which is made of steel wire bristles, is fixed to the side of the lifting block 2 facing the center of the column 1. A hemispherical lower protrusion 7 is fixed to the upper end of each lifting block 2.

[0028] A rotating sleeve 8 is rotatably installed inside the circular hole. Specifically, the rotating sleeve 8 is rotatably connected to the column 1 via a bearing 10. The lower end of the rotating sleeve 8 is fixed with an upper protrusion 9 corresponding to the lifting block 2. The upper protrusion 9 is hemispherical. The column 1 is provided with a drive assembly for driving the rotating sleeve 8 to rotate.

[0029] The drive assembly includes an external motor 11 fixedly connected to the column 1. The axis of the external motor 11 is parallel to the axis of the column 1. A gear 12 is concentrically fixed on the output shaft of the external motor 11. A gear ring 13 is concentrically fixed on the outside of the rotating sleeve 8. The gear 12 meshes with the gear ring 13.

[0030] A sleeve 14 is concentrically fixed to the outer side of the upper end of the column 1, and a handle 15 is fixed to the outer side of the sleeve 14.

[0031] When rust removal is required on the nut 20, the lower part of the column 1 is fitted onto the outside of the nut 20, and the side brush 6 on the lifting block 2 contacts the side of the nut 20 on one side, stabilizing the column 1. The external motor 11 is then started. After starting, the external motor 11 drives the rotating sleeve 8 and the upper protrusion 9 to rotate via the gear 12 and gear ring 13. The rotation of the upper protrusion 9, in conjunction with the lower protrusion 7, causes the lifting block 2 to descend intermittently, stretching the tension spring 5. After the upper protrusion 9 separates from the lower protrusion 7, the lifting block 2 and the side brush 6 rise under the tension of the tension spring 5. Therefore, during the rotation of the rotating sleeve 8, the lifting block 2 can drive the side brush 6 to move up and down, allowing the side brush 6 to remove rust from the outer surface of the nut 20. When removing rust from the outer surface of the nut 20, the side brush 6 moves up and down, and its direction of movement is parallel to the outer surface of the nut 20 on one side, thus preventing damage due to excessive resistance during movement.

[0032] In this embodiment, it is convenient to remove rust from the outer surface of the nut 20, but it is not possible to remove rust from the end face of the nut 20 away from the fastener in the axial direction.

[0033] Example 2: Based on Example 1, referring to... Figure 1 As shown, an end-face grinding assembly is concentrically and elastically slidably mounted on the outer sleeve 14 in the vertical direction. The end-face grinding assembly includes a square rod 17, the lower end of which is located inside the outer sleeve 14. An inner motor 22 is concentrically fixed to the lower end of the square rod 17. The inner motor 22 is concentric with the square rod 17. A turntable 21 is concentrically fixed to the output shaft of the inner motor 22. An end brush 23, which is made of steel wire bristles, is fixed to the lower end of the turntable 21. A pressure plate 19 is fixed to the upper end of the square rod 17. A sleeve 16 is concentrically fixed to the outer sleeve 14. The square rod 17 passes through the sleeve 16, and the square rod 17 and the sleeve 16 are slidably connected. The pressure plate 19 and the sleeve 16 are connected by a spring 18.

[0034] The end face grinding assembly in this embodiment can remove rust from the end face of the nut 20 away from the fastener in the axial direction. When it is necessary to remove rust from the end face of the nut 20 away from the fastener in the axial direction, the external motor 11 is in the off state. Then, by holding the handle 15, the pressure plate 19 and the square rod 17 drive the internal motor 22 and the turntable 21 to move downward. When the turntable 21 protrudes below the column 1, the internal motor 22 is started. The internal motor 22 drives the turntable 21 and the end brush 23 to rotate. After the rotating end brush 23 contacts the end face of the nut 20 away from the fastener in the axial direction, the end brush 23 can remove rust from the end face of the nut 20 away from the fastener in the axial direction. When the end brush 23 removes rust from the end face of the nut 20 away from the fastener in the axial direction, since the movement direction of the end brush 23 is parallel to the end face of the nut 20 in the axial direction, it can avoid the end brush 23 from being subjected to large resistance during movement, which would cause the rust removal brush to deviate by a large distance.

[0035] When grinding and removing rust from the hexagonal head of a bolt, this rust removal brush can effectively grind the sidewalls of the hexagonal head and the end face of the hexagonal head away from the bolt.

[0036] When grinding and removing rust from the hexagonal head of the bolt, the side brush 6 grinds the side of the hexagonal head of the bolt while the square rod 17 is pressed down and the internal motor 22 is started, which can grind the side and end face of the hexagonal head at the same time.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nut rust removal brush, comprising a cylindrical body (1), characterized in that, The lower part of the column (1) has a concentric groove with a hexagonal cross section. The upper part of the column (1) has a concentric circular hole that communicates with the groove. The groove wall is elastically slidably connected to a lifting block (2). The lifting block (2) is fixed with a side brush (6) on the side facing the center of the column (1). The upper end of the lifting block (2) is fixed with a hemispherical lower protrusion (7). A rotating sleeve (8) is rotatably arranged in the circular hole. The lower end of the rotating sleeve (8) is fixed with an upper protrusion (9) corresponding to the lifting block (2). The upper protrusion (9) is hemispherical. The column (1) is provided with a driving component to drive the rotating sleeve (8) to rotate. The upper outer side of the column (1) is concentrically fixed with an outer sleeve (14). The outer sleeve (14) is concentrically elastically slidably arranged with an end face grinding component in the vertical direction.

2. The brush according to claim 1, wherein The lifting block (2) has a slider (4) fixed on the side away from the axis of the column (1). A vertical groove (3) is provided on the groove wall of the groove. The slider (4) is slidably engaged in the groove (3). The upper end of the slider (4) is connected to the column (1) by a tension spring (5). A gap is provided between the lower end of the lifting block (2) and the lower end of the column (1) to allow the lifting block (2) to move downward.

3. The brush according to claim 1, wherein The drive assembly includes an external motor (11) fixedly connected to the column (1). The axis of the external motor (11) is parallel to the axis of the column (1). A gear (12) is concentrically fixed on the output shaft of the external motor (11). A gear ring (13) is concentrically fixed on the outside of the rotating sleeve (8). The gear (12) meshes with the gear ring (13).

4. The brush according to claim 1, wherein The rotating sleeve (8) and the column (1) are rotatably connected by a bearing (10).

5. The brush according to claim 1, wherein A handle (15) is fixed to the outside of the outer jacket (14).

6. The brush according to claim 1, wherein The end face grinding assembly includes a square rod (17), the lower end of which is located inside the outer sleeve (14). An inner motor (22) is concentrically fixed to the lower end of the square rod (17). The inner motor (22) is concentric with the square rod (17). A turntable (21) is concentrically fixed on the output shaft of the inner motor (22). An end brush (23) is fixed to the lower end of the turntable (21). A pressure plate (19) is fixed to the upper end of the square rod (17). A sleeve (16) is concentrically fixed on the outer sleeve (14). The square rod (17) passes through the sleeve (16). The square rod (17) and the sleeve (16) are slidably connected. The pressure plate (19) and the sleeve (16) are connected by a spring (18).

7. The nut rust removal brush according to claim 6, characterized in that, Both the end bristles (23) and the side bristles (6) are made of steel wire.

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