Rebar planting hole reducing cleaning brush

Abstract

The utility model belongs to the technical field of house construction, and particularly relates to a rebar planting hole reducing cleaning brush which comprises a main rod and brush assemblies, and the brush assemblies are evenly arranged on the outer wall of the main rod. The limiting assembly is used for preventing the brush assembly from being separated from the main rod; the brush assembly comprises a fixing disc, bristles and a control rod. A central hole, a circumferential hole and a preformed hole are formed in the fixed disc; the lower ends of the bristles are evenly fixed to the outer wall of the main rod, the upper ends of the bristles penetrate through the circumferential hole to form a free end of an umbrella-shaped structure with an upward opening, the opening degree of the bristles is adjusted through movement of the circumferential hole, and diameter changing of the brush is achieved. The device is simple and small, is made of common materials of a project, and is easy to manufacture; the device is easy to operate, simple, convenient, efficient, relatively small and light, can be operated by one person, and greatly improves the hole cleaning efficiency through cooperative operation with the air pump, so that the energy consumption and the required labor cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of house construction, and particularly relates to a brush for cleaning rebar holes with variable diameters. Background Art

[0002] The electric power construction base project belongs to the building construction category. Because its total construction area is nearly 20,000 square meters, according to the design requirements, there is a need for embedded reinforcement in many places in the building. The embedded reinforcement project is to drill holes on the original concrete foundation, and then add embedded reinforcement glue and steel bars into the holes. The locking force of the embedded reinforcement glue is used to anchor the steel bars to the concrete. This is a connection reinforcement technology commonly used in construction projects.

[0003] Hole cleaning is the most important step in rebar planting technology, because there will be a lot of dust and ash inside the hole after drilling, which directly affects the quality of rebar planting. Therefore, it is necessary to clean up the debris in the hole. If the residue in the hole is not cleaned up during hole cleaning, the bonding strength after the rebar planting glue is poured in cannot meet the design requirements, which will affect the rebar planting effect. In the process of hole cleaning, it takes repeated cleaning to achieve the hole cleaning effect when using a traditional brush to clean the hole; when using an air pump to clean the hole, larger and heavier particles will be squeezed in the hole and cannot be effectively cleaned out. Therefore, a cleaning device with fast and efficient cleaning effect is urgently needed. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a brush for cleaning rebar planting holes with a variable diameter, which aims to quickly and efficiently clean impurities in the rebar planting holes.

[0005] The utility model is achieved in this way:

[0006] The utility model comprises a main rod and a brush assembly. The outer wall of the main rod is provided with a brush assembly along the axial direction. The impurities in the rebar planting hole are cleaned by the movement of the brush assembly. The utility model also comprises a limit assembly for preventing the brush assembly from being separated from the main rod.

[0007] The brush assembly comprises a plurality of fixed disks, bristles and a control rod; the control rod is evenly fixedly connected to the plurality of fixed disks along the axial direction, and each fixed disk is evenly provided with inverted umbrella-shaped bristles in the circumferential direction;

[0008] The fixed disk is provided with a central hole, a circumferential hole and a reserved hole; the fixed disk is slidably connected to the main rod through the central hole at the center position; a plurality of circumferential holes of the same size are evenly distributed circumferentially of the central hole, the lower ends of the bristles are evenly fixed on the outer wall of the main rod, the upper ends of the bristles pass through the corresponding circumferential holes to form free ends, and the opening degree of the bristles is adjusted by moving the circumferential holes to achieve the variable diameter of the brush; the reserved hole fixed between the central hole and the circumferential hole is fixedly connected to the control rod passing through the inside of the reserved hole, and the synchronous movement of several fixed disks along the main rod is achieved by moving the control rod.

[0009] As a preferred technical solution, the limit assembly includes a limit plate and a limit ball; the limit plate with a limit hole in the center is sleeved on the upper outer wall of the main rod, and the upper end of the control rod provided with a limit ball freely passes through the limit hole on the limit plate, and the diameter of the limit ball located below the limit plate is larger than the diameter of the limit hole.

[0010] As a preferred technical solution, the distance between the limiting hole and the limiting ball is smaller than the length of the bristles.

[0011] As a preferred technical solution, the main rod includes a hand-held handle located at the upper part and a brush section located at the lower part, and the length ratio of the hand-held handle to the brush section is 3:7.

[0012] As a preferred technical solution, the main rod is a hollow metal rod with a diameter of 3 mm and a length of 1000 mm.

[0013] As a preferred technical solution, the outer diameter of the fixed disk is 8 mm; along the axial direction of the control rod, the distance between adjacent fixed disks is 20 mm.

[0014] As a preferred technical solution, the spacing angle between adjacent circumferential holes on the fixed disk is 30°.

[0015] As a preferred technical solution, the inner side of the reserved hole on the fixing plate is fixed to the outer wall of the control rod by welding.

[0016] As a preferred technical solution, the lower end of the bristle is fixed to the outer wall of the main rod by gluing.

[0017] As a preferred technical solution, the control rod is a solid steel bar with a diameter of 1 mm.

[0018] The utility model has the following advantages and technical effects:

[0019] The utility model discloses a brush for cleaning rebar holes with variable diameters, which is simple and compact, made of common project materials and easy to manufacture; the bristles arranged in an umbrella shape are more conducive to the brush entering the rebar holes and removing dust and residue in the holes, and has the characteristics of strong applicability for cleaning rebar holes of different diameters; the device is simple to operate, convenient and efficient, the device is relatively small and light, and can be operated by one person, and the coordinated operation with an air pump greatly improves the hole cleaning efficiency, thereby reducing energy consumption and the required labor costs; compared with traditional construction methods, the use of this new device has many advantages such as energy saving, reliability, high efficiency, and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the variable diameter cleaning brush for the reinforcing bar hole of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the brush assembly of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the brush section of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the limit assembly of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the limiting plate of the utility model.

[0025] In the figure: 1, main rod; 2, brush assembly; 21, fixed plate; 211, center hole; 212, circumferential hole; 213, reserved hole; 22, bristles; 23, control rod; 3, limit assembly; 31, limit plate; 311, limit hole; 32, limit ball. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0027] like Figure 1-5 As shown, the utility model discloses a brush for cleaning rebar holes with variable diameters, comprising a main rod 1 and a brush assembly 2. The brush assembly 2 is axially arranged on the outer wall of the main rod 1, and cleaning of impurities in the rebar holes is completed by movement of the brush assembly 2; a limiting assembly 3 is also included to prevent the brush assembly 2 from detaching from the main rod 1.

[0028] The main rod 1 is a hollow metal rod, which has high rigidity, good stability and high strength, thus increasing its service life; the hollow feature reduces the overall weight of the brush, making it easier for operators to operate and carry;

[0029] Further preferably, the main rod 1 has a diameter of 3 mm and a length of 1000 mm, which is long enough to facilitate cleaning of deeper rebar holes.

[0030] The main rod 1 includes a hand-held handle at the upper part and a brush section at the lower part. The hand-held handle is not provided with a brush assembly 2, which is convenient for the staff to operate by hand; the brush section is provided with a brush assembly 2 for cleaning the rebar holes.

[0031] Preferably, the length ratio of the hand-held handle to the brush section is 3:7, which ensures that the operator can operate it easily and that there is enough length to clean the rebar holes.

[0032] The brush assembly 2 includes a plurality of fixed disks 21, bristles 22 and a control rod 23; the control rod 23 is evenly and fixedly connected to the plurality of fixed disks 21 along the axial direction, and each fixed disk 21 is evenly and circumferentially provided with inverted umbrella-shaped bristles 22.

[0033] The fixed plate 21 is a steel disc with an outer diameter of 8 mm. Since the diameter of steel bars in the current construction industry is generally not less than 8 mm, the fixed plate 21 with an outer diameter of 8 mm can ensure that the brush can adapt to the needs of the minimum size of the rebar embedding hole; the control rod 23 is welded and fixed to the steel fixed plate 21, connecting several fixed plates 21 into a whole. The combination of the two is more stable and the service life is increased. At the same time, the welding quality needs to be guaranteed to ensure the synchronization of the displacement between the fixed plates 21.

[0034] Further preferably, the distance between adjacent fixing plates 21 is 20 mm.

[0035] The fixed disk 21 is provided with a central hole 211, a circumferential hole 212 and a reserved hole 213; the fixed disk 21 is slidably connected to the main rod 1 through the central hole 211 at the center position; the central hole 211 has a plurality of circumferential holes 212 of the same size evenly distributed circumferentially, the lower ends of the bristles 22 are evenly fixed on the outer wall of the main rod 1, and the upper ends of the bristles 22 pass through the corresponding circumferential holes 212 to form free ends, and the opening degree of the bristles 22 is adjusted by moving the circumferential holes 212 to achieve the diameter change of the brush; the reserved hole 213 fixed between the central hole 211 and the circumferential hole 212 is fixedly connected to the control rod 23 passing through the inside of the reserved hole 213, and the synchronous movement of several fixed disks 21 along the main rod 1 is achieved by moving the control rod 23.

[0036] Preferably, the spacing angle between adjacent circumferential holes 212 is 30°. According to specific construction requirements, the density of the circumferential holes 212 can be changed accordingly, that is, the spacing angle between adjacent circumferential holes 212 can be increased or decreased accordingly.

[0037] Preferably, the control rod 23 passes through the reserved hole 213 , and the control rod 23 is welded to the inner edge of the reserved hole 213 .

[0038] The lower ends of the bristles 22 are fixed to the main rod 1 by gluing. If the bristles 22 fall off during use, they can be re-fixed or replaced with new ones, thereby improving the use efficiency.

[0039] Preferably, the bristles 22 are made of elastic plastic material, and the degree of opening of the free ends of the bristles 22 is changed according to the position of the circumferential hole 212 on the bristles 22; when the circumferential hole 212 is close to the free ends of the bristles 22, the free ends of the bristles 22 are restricted by the circumferential hole 212, and the diameter of the umbrella shape formed after the bristles 22 shrink becomes smaller, which is conducive to the brush entering the rebar hole, reducing the damage to the brush itself and the hole wall caused by forcing the brush into the rebar hole due to its excessively large diameter, thereby improving the service life of the brush; when the circumferential hole 212 is close to the lower end of the bristles 22, the degree of opening of the free ends of the bristles 22 is large, and the diameter of the umbrella shape formed by the bristles 22 becomes larger. By applying pressure to the control rod 23 to increase the degree of opening of the bristles 22, the contact and friction between the bristles 22 and the hole wall are increased, making it easier to clean the powder blocks bonded to the hole wall due to moisture and the larger particles at the bottom of the hole, thereby achieving a better cleaning effect of the rebar hole.

[0040] The control rod 23 is a solid steel bar with a diameter of 1 mm, which is located outside the main rod 1. The control rod 23 extends to the handle, which is convenient for the staff to hold the control rod 23 to control the up and down movement of the fixed plate 21 on the main rod 1, and then control the opening degree of the umbrella-shaped bristles 22, thereby forming a variable diameter cleaning brush.

[0041] Preferably, the length of the control rod 23 is the same as that of the main rod 1; if the control rod 23 is too short, it is inconvenient for the staff to operate; if the control rod 23 is too long, it is easy to cause harm to the staff.

[0042] The limiting assembly 3 includes a limiting plate 31 and a limiting ball 32; the limiting plate 31 with a limiting hole 311 in the center is sleeved on the upper outer wall of the main rod 1, and the upper end of the control rod 23 provided with the limiting ball 32 freely passes through the limiting hole 311 on the limiting plate 31, and the diameter of the limiting ball 32 located below the limiting plate 31 is larger than the diameter of the limiting hole 311.

[0043] The limiting plate 31 is in the shape of a disk, and the inner diameter of the limiting plate 31 is welded and fixed to the upper outer wall of the main rod 1 .

[0044] Preferably, the outer diameter of the limiting plate 31 is 5 mm.

[0045] The circular limiting hole 311 corresponds to the position of the reserved hole 213 , ensuring that the upper end of the control rod 23 can pass through the limiting hole 311 , making it convenient for the staff to operate the control rod 23 .

[0046] The limiting ball 32 is a sphere, and the control rod 23 passes through the center of the limiting ball 32 and is welded and fixed; the distance between the limiting hole 311 and the limiting ball 32 is smaller than the length of the bristles 22; when the control rod 23 is moved upward, the limiting ball 32 on the control rod 23 cannot pass through the limiting hole 311. At this time, the circumferential hole 212 moves along the lower end of the bristles 22 to the free end. Since the moving distance of the limiting ball 32 is smaller than the length of the bristles 22, the bristles 22 will not detach from the inside of the circumferential hole 212, thereby avoiding the phenomenon that the fixed plate 21 falls off the bristles 22 due to the excessive movement distance of the control rod 23 during construction, and the bristles 22 cannot shrink or expand.

[0047] Working principle:

[0048] Before cleaning the rebar hole, the upper end of the handheld control rod 23 is pulled upward, and the fixed plate 21 moves along the lower part of the bristles 22 to the upper part. The circumferential hole 212 retracts the bristles 22 to minimize the diameter of the brush. At this time, the brush is in a contracted state, which is conducive to the brush entering the rebar hole. At the same time, it reduces the damage to the brush itself and the hole wall due to the brush being too large in diameter and forcibly inserted into the rebar hole, and can increase the service life of the brush.

[0049] After entering the rebar hole, the control rod 23 is pushed downward, and the fixed plate 21 moves along the upper part of the brush 22 to the lower part. The bristles 22 open under the action of the circumferential holes 212, so that the diameter of the brush becomes larger. According to the actual size of the rebar hole, the diameter of the brush is controlled to reach an appropriate size; then the staff rotates the hand-held handle, and the bristles 22 rotate accordingly. The impurities in the rebar hole are cleaned up and taken out as the brush is pulled out.

[0050] The inverted umbrella-shaped variable-diameter brush not only meets the cleaning needs of rebar holes of different diameters; when cleaning impurities that are difficult to clean, such as powder blocks stuck to the hole wall due to moisture and larger particles at the bottom of the hole, pressure can be applied through the control rod 23 to increase the contact and friction between the bristles 22 and the hole wall to achieve a better hole cleaning effect.

[0051] Sometimes it only takes 2 times to effectively clean a rebar hole, which saves time and cost compared with traditional cleaning methods. The utility model is simple and compact, made from common materials in the project and easy to make, which reduces the investment cost. The operation is simple and efficient, and can be operated by one person. Working in conjunction with an air pump greatly improves the hole cleaning efficiency, thereby reducing energy consumption and the required labor costs. Compared with traditional construction methods, the use of the utility model has many advantages such as energy saving, reliability, high efficiency, and strong adaptability. It can be widely used in various housing construction projects, highway bridges, highways, and municipal environmental projects that include related engineering content.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brush for cleaning a rebar hole with a variable diameter, comprising a main rod (1) and a brush assembly (2), wherein the brush assembly (2) is provided on the outer wall of the main rod (1) along the axial direction, and the brush assembly (2) is moved to clean impurities in the rebar hole, and the brush assembly (2) is characterized in that: It also includes a limiting assembly (3) for preventing the brush assembly (2) from being separated from the main rod (1); The brush assembly (2) comprises a plurality of fixed disks (21), bristles (22) and a control rod (23); the control rod (23) is evenly and fixedly connected to the plurality of fixed disks (21) along the axial direction, and each fixed disk (21) is evenly and circumferentially provided with inverted umbrella-shaped bristles (22); The fixed disk (21) is provided with a central hole (211), a circumferential hole (212) and a reserved hole (213); the fixed disk (21) is slidably connected to the main rod (1) via the central hole (211) at the central position; a plurality of circumferential holes (212) of the same size are evenly distributed around the central hole (211); the lower ends of the bristles (22) are evenly fixed on the outer wall of the main rod (1); the upper ends of the bristles (22) pass through the corresponding circumferential holes (212) to form free ends; the opening degree of the bristles (22) is adjusted by moving the circumferential holes (212) to achieve the change of the diameter of the brush; the reserved hole (213) fixed between the central hole (211) and the circumferential hole (212) is fixedly connected to a control rod (23) passing through the inside of the reserved hole (213); the synchronous movement of the plurality of fixed disks (21) along the main rod (1) is achieved by moving the control rod (23).

2. The brush for cleaning rebar holes with variable diameters as claimed in claim 1, characterized in that: The limiting assembly (3) comprises a limiting plate (31) and a limiting ball (32); the limiting plate (31) having a limiting hole (311) at the center is sleeved on the upper outer wall of the main rod (1); the upper end of the control rod (23) provided with the limiting ball (32) freely passes through the limiting hole (311) on the limiting plate (31); the diameter of the limiting ball (32) located below the limiting plate (31) is larger than the diameter of the limiting hole (311).

3. The brush for cleaning rebar holes with variable diameters as claimed in claim 2, characterized in that: The distance between the limiting hole (311) and the limiting ball (32) is smaller than the length of the bristles (22).

4. The brush for cleaning rebar holes with variable diameters as claimed in claim 1, characterized in that: The main rod (1) comprises a hand-held handle at the upper part and a brush section at the lower part, and the length ratio of the hand-held handle to the brush section is 3:

7.

5. The brush for cleaning rebar holes with variable diameters as claimed in claim 4, characterized in that: The main rod (1) is a hollow metal rod with a diameter of 3 mm and a length of 1000 mm.

6. The brush for cleaning rebar holes with variable diameters as claimed in claim 1, characterized in that: The outer diameter of the fixed disk (21) is 8 mm; along the axial direction of the control rod (23), the distance between adjacent fixed disks (21) is 20 mm.

7. The brush for cleaning rebar holes with variable diameters as claimed in claim 6, characterized in that: The interval angle between adjacent circumferential holes (212) on the fixed disk (21) is 30°.

8. The brush for cleaning rebar holes with variable diameters as claimed in claim 7, characterized in that: The inner side of the reserved hole (213) on the fixing plate (21) is fixedly welded to the outer wall of the control rod (23).

9. The brush for cleaning rebar holes with variable diameters as claimed in claim 3, characterized in that: The lower end of the bristles (22) is fixed to the outer wall of the main rod (1) by gluing.

10. The brush for cleaning rebar holes with variable diameters as claimed in claim 8, characterized in that: The control rod (23) is a solid steel bar with a diameter of 1 mm.

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