A vibratory compaction device to prevent air bubble defects on the surface of fair-faced concrete.
By designing a combination of a vibratory base, a vibratory head, and an air bubble guiding device, and utilizing micropore and negative pressure technology, the problem of air bubbles being difficult to expel from the surface of fair-faced concrete was solved, achieving efficient air bubble removal and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI TIANZHAO ROAD & BRIDGE CONSTR ENG CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-03
AI Technical Summary
Existing vibration methods are insufficient to effectively remove air bubbles from the surface of fair-faced concrete, leading to surface defects and affecting appearance quality and durability.
A vibration device was designed, including a vibration base, a vibration head, a bubble guiding device, and a microporous structure. By combining micropores and annular airflow channels, negative pressure and high-frequency vibration are used to quickly guide and discharge bubbles.
It significantly improves the efficiency of air bubble removal from the surface of fair-faced concrete, reduces surface defects, and enhances construction quality.
Smart Images
Figure CN224452271U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction equipment technology, and more specifically, to a vibration device for preventing air bubble defects on the surface of fair-faced concrete. Background Technology
[0002] In the construction of fair-faced concrete, the pouring and vibration of the concrete are crucial steps. Because fair-faced concrete has no surface decoration and is directly exposed to the outside, the requirements for surface quality are extremely high. During construction, the concrete is poured into the formwork and then vibrated to ensure the compactness of the concrete and to remove internal air bubbles, thereby achieving a smooth, defect-free surface effect.
[0003] Existing concrete vibration methods mainly include immersion vibrators and attached vibrators. Immersion vibrators penetrate the concrete to vibrate, effectively removing air bubbles inside the concrete, but their effectiveness in removing surface air bubbles is limited. Attached vibrators are attached to the outside of the formwork for vibration; while they can vibrate the concrete as a whole, they are also difficult to effectively remove surface air bubbles. These traditional vibration methods are widely used in construction, but they all have certain limitations.
[0004] However, existing vibration methods have significant shortcomings in removing air bubbles from the concrete surface. Immersion vibrators, due to their operating mechanism, struggle to reach the concrete surface, resulting in ineffective removal of surface air bubbles. While attached vibrators can vibrate the entire concrete structure, their force transmission method also leads to less than ideal air bubble removal. These shortcomings make fair-faced concrete surfaces prone to air bubble defects, affecting its appearance and durability. Utility Model Content
[0005] The purpose of this invention is to provide a vibration device for preventing air bubble defects on the surface of fair-faced concrete. It can effectively improve the air bubble discharge efficiency, improve the surface quality of fair-faced concrete, and solve the problem that air bubble defects on the surface of fair-faced concrete are difficult to eliminate effectively and have low discharge efficiency in the prior art.
[0006] The embodiments of this utility model are achieved through the following technical solution: a vibration device for preventing air bubble defects on the surface of fair-faced concrete, comprising:
[0007] The vibrating base is a flat plate structure used to fit against the surface of fair-faced concrete for vibration. The bottom surface of the vibrating base is provided with multiple micropores to guide air bubbles from the concrete surface during vibration.
[0008] A vibrating head is disposed above the vibrating base. The vibrating head is connected to the vibrating base by a flexible connector. The flexible connector allows the vibrating head to swing up and down and left and right within a certain range. A high-frequency vibration motor is installed inside the vibrating head.
[0009] The bubble guiding device includes a gas collection box and multiple bubble guiding tubes. One end of each bubble guiding tube is connected to the micropores of the vibrating base, and the other end of each bubble guiding tube extends to the gas collection box located outside the surface of the fair-faced concrete. The gas collection box is provided with an exhaust port. The bubble guiding tubes guide the bubbles generated during the vibration process to the gas collection box and discharge them.
[0010] Furthermore, an annular airflow channel is provided around the micropores of the vibrating base, and the annular airflow channel is connected to the micropores.
[0011] Furthermore, a miniature air pump is provided at the inlet of the annular airflow channel. The miniature air pump is used to generate negative pressure to quickly draw bubbles into the annular airflow channel and discharge them.
[0012] Furthermore, the contact surface between the bottom of the vibrating head and the vibrating base is an arc-shaped surface, and the bottom of the vibrating head is in close contact with the vibrating base, achieving all-round vibration when swinging.
[0013] Furthermore, multiple micro-vibrators are provided on the bottom arc-shaped surface of the vibrating head, and the micro-vibrators correspond to the positions of the micro-holes in the vibrating base.
[0014] Furthermore, the micropores are at a 45° angle to the annular airflow channel, and the diameter of the micropores increases gradually from the center to the edge.
[0015] Furthermore, it also includes a support rod and a movable wheel, one end of the support rod being fixedly connected to the vibrating base, and the movable wheel being installed at the other end of the support rod.
[0016] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:
[0017] 1. This utility model, through the micropores of the vibrating base and the bubble guiding tube of the bubble guiding device, can guide and discharge the bubbles on the surface of fair-faced concrete in a timely manner, significantly reducing surface bubble defects.
[0018] 2. This utility model uses micropores that are obliquely intersecting the annular airflow channel at 45°, and the diameter of the micropores is distributed in a gradient from the center to the edge. This design optimizes the bubble discharge path, improves the bubble discharge efficiency, and enhances the structural stability of the vibrating base. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the bottom structure of the vibratory base in this utility model;
[0022] Figure 3 This is a schematic diagram of the internal structure of the vibratory base in this utility model;
[0023] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle.
[0024] Icons: 10. Vibrating base; 11. Micropores; 12. Annular airflow channel; 13. Isolation net; 14. Miniature air pump; 15. Vibrating head; 16. Flexible connector; 17. Arc-shaped surface; 18. Miniature vibrator; 20. Air collection box; 21. Bubble guide tube; 22. Exhaust port; 23. Airflow regulating valve; 30. Support rod; 31. Casters. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example
[0027] The following detailed description, in conjunction with specific embodiments, further illustrates that this utility model is a vibration device for preventing air bubble defects on the surface of fair-faced concrete. Figure 1 and Figure 2The system includes a vibratory base 10, which is a flat plate structure used to adhere to the surface of fair-faced concrete for vibration operations. The bottom surface of the vibratory base 10 has multiple micro-holes 11 formed by laser micro-engraving. The diameter of the micro-holes 11 is 0.5-1.5mm and the spacing between the holes is 1-2cm, which are used to guide air bubbles from the concrete surface to escape during the vibration process.
[0028] Reference Figure 2 and Figure 3 An annular airflow channel 12 is provided around the micropores 11 of the vibrating base 10. The annular airflow channel 12 is connected to the micropores 11. The longitudinal section of the annular airflow channel 12 is trapezoidal, and the dimensions of the annular airflow channel 12 are 1mm at the top, 2mm at the bottom, and 1.5mm in height. The annular airflow channel 12 and the micropores 11 are obliquely intersected at 45°. An isolation net 13 is installed at the entrance of the annular airflow channel 12 and the micropores 11. In this embodiment, only two sets of annular airflow channels 12 and micropores 11 are shown.
[0029] Reference Figure 3 A miniature air pump 14 is installed inside the annular airflow channel 12. The miniature air pump 14 can generate negative pressure to quickly draw air bubbles into the annular airflow channel 12 and discharge them. This improves the efficiency of air bubble discharge and reduces the amount of air bubbles remaining on the concrete surface.
[0030] Reference Figure 4 A vibrating head 15 is connected to the vibrating base 10 via a flexible connector 16. The flexible connector 16 allows the vibrating head 15 to swing up and down and left and right within a certain range. The vibrating head 15 is equipped with a high-frequency vibration motor, whose vibration frequency is adjustable from 50 to 100 Hz and whose amplitude is 2 to 5 mm. The bottom of the vibrating head 15 has an arc-shaped contact surface 17 with the vibrating base 10, which allows the vibrating head 15 to fit tightly with the vibrating base 10 and achieve omnidirectional vibration during swinging.
[0031] Reference Figure 4 Meanwhile, multiple micro-vibrators 18 are installed on the bottom arc-shaped surface 17 of the vibrating head 15. The micro-vibrators 18 correspond to the micro-holes 11 of the vibrating base 10, enabling localized high-frequency vibration of the concrete around the micro-holes 11, further promoting the expulsion of air bubbles. The vibration device can more effectively improve the surface quality of fair-faced concrete and ensure construction results.
[0032] Reference Figure 1 and Figure 3The system also includes a bubble guiding device, which comprises a gas collecting box 20 and multiple bubble guiding pipes 21. One end of each bubble guiding pipe 21 is connected to a micropore 11 in the vibrating base 10, and the other end extends into the gas collecting box 20. The bubble guiding pipes 21 guide the bubbles generated during vibration to the gas collecting box 20 and discharge them. The bubble guiding pipes 21 adopt a multi-layer structure design: the inner layer is a microporous material with good air permeability, the middle layer is an elastic material, and the outer layer is a corrosion-resistant protective material. The gas collecting box 20 is located on the outside of the fair-faced concrete surface. Multiple bubble separators are installed inside the gas collecting box 20 to separate bubbles from air, preventing bubbles from accumulating inside the gas collecting box 20. An exhaust port 22 is provided on the gas collecting box 20, and an airflow regulating valve 23 is installed at the exhaust port 22 to further promote the discharge of bubbles by adjusting the airflow speed.
[0033] Reference Figure 1 It also includes a support rod 30 and a movable wheel 31. One end of the support rod 30 is fixedly connected to the vibrating base 10, and the other end of the support rod 30 is equipped with a movable wheel 31. The movable wheel 31 adopts a multi-directional movable wheel design, which can rotate 360 degrees in the horizontal direction and can be adjusted up and down in the vertical direction. The movable wheel 31 can move freely along the surface of fair-faced concrete, which facilitates the position adjustment of the vibrating device during construction. The support rod 30 is also equipped with an electric telescopic rod for adjusting the height, which can adjust the contact pressure between the vibrating base 10 and the concrete surface according to the thickness of fair-faced concrete in different construction parts.
[0034] The working process of this embodiment is as follows: After the fair-faced concrete is poured, the vibrating device is placed on the concrete surface. The contact pressure between the vibrating base 10 and the concrete surface is adjusted by the support rod 30 and the moving wheel 31 to ensure that the micropores 11 are in close contact with the concrete surface. The high-frequency vibration motor and the micro vibrator 18 in the vibrating head 15 are started. Under the action of the flexible connector 16, the vibrating head 15 vibrates the concrete in all directions. At the same time, the micro vibrator 18 performs local high-frequency vibration on the concrete around the micropores 11 to promote the discharge of air bubbles. The micro air pump 14 generates negative pressure, which quickly draws in the air bubbles through the annular airflow channel 12 and guides them to the air bubble guide pipe 21, and finally discharges them through the exhaust port 22 of the air collection box 20. During the vibration process, the 45° oblique design of the micropores 11 and the annular airflow channel 12, as well as the gradient distribution of the diameter of the micropores 11, further optimizes the air bubble discharge path and improves the air bubble discharge efficiency. Through the above-mentioned optimized design, the vibrating device of this utility model can effectively solve the problem of air bubble defects on the surface of fair-faced concrete and improve the construction quality.
[0035] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A vibrating device for preventing air bubble defects on the surface of a fresh concrete, characterized by, include: Vibrating base (10), the vibrating base (10) is a flat plate structure, used to fit against the surface of fair-faced concrete for vibration operation, the bottom surface of the vibrating base (10) is provided with multiple micro holes (11) to guide the air bubbles on the concrete surface to be discharged during the vibration process; A vibrating head (15) is disposed above the vibrating base (10). The vibrating head (15) and the vibrating base (10) are connected by a flexible connector (16). The flexible connector (16) allows the vibrating head (15) to swing up and down and left and right within a certain range. A high-frequency vibration motor is provided inside the vibrating head (15). The bubble guiding device includes a gas collection box (20) and a plurality of bubble guiding pipes (21). One end of the bubble guiding pipe (21) is connected to the micropore (11) of the vibrating base (10), and the other end of the bubble guiding pipe (21) extends to the gas collection box (20) located outside the surface of the fair-faced concrete. The gas collection box (20) is provided with an exhaust port (22). The bubble guiding pipe (21) guides the bubbles generated during the vibration process to the gas collection box (20) and discharges them.
2. The vibratory compaction device for preventing air bubble defects on the surface of fair-faced concrete according to claim 1, characterized in that: An annular airflow channel (12) is provided around the micropores (11) of the vibrating base (10), and the annular airflow channel (12) is connected to the micropores (11).
3. The vibrating device for preventing the air bubble defect of the fair-faced concrete surface according to claim 2, characterized in that: A miniature air pump (14) is provided at the inlet of the annular airflow channel (12). The miniature air pump (14) is used to generate negative pressure to quickly draw bubbles into the annular airflow channel (12) and discharge them.
4. The vibrating device for preventing the surface bubble defect of the fair-faced concrete according to claim 1, characterized in that: The bottom of the vibrating head (15) and the contact surface of the vibrating base (10) are arc-shaped surfaces (17). The bottom of the vibrating head (15) is in close contact with the vibrating base (10) and achieves all-round vibration when swinging.
5. The vibrating device for preventing the surface bubble defect of the fair-faced concrete according to claim 4, characterized in that: Multiple micro vibrators (18) are provided on the bottom arc-shaped surface (17) of the vibrating head (15), and the micro vibrators (18) correspond to the positions of the microholes (11) of the vibrating base (10).
6. The vibratory compaction device for preventing air bubble defects on the surface of fair-faced concrete according to claim 2, characterized in that: The micropores (11) are at a 45° angle to the annular airflow channel (12), and the diameter of the micropores (11) increases from the center to the edge.
7. The vibrating device for preventing the surface bubble defect of the fair-faced concrete according to claim 1, characterized in that: It also includes a support rod (30) and a moving wheel (31), one end of the support rod (30) is fixedly connected to the vibrating base (10), and the moving wheel (31) is installed on the other end of the support rod (30).