Vibrator based on specific gravity adjustment and construction method

Abstract

The application provides a vibrator based on specific gravity adjustment and a construction method, which comprises a barrel, a rotating shaft arranged in the barrel, an eccentric vibration block connected with the rotating shaft, a specific gravity adjustment capsule arranged in the barrel, an inlet pipe and a discharge pipe connected with the specific gravity adjustment capsule, and the inlet pipe and the discharge pipe are used for filling the specific gravity adjustment capsule with media with different specific gravities. The vibrator can reach some locations on the surface of the reentrant corner by adjusting the specific gravity, so that the pouring quality of the locations which are not easy to vibrate in the prior art is improved. In the preferred scheme, the grid structure is arranged in cooperation with the air-permeable water-blocking cover layer and the negative pressure extraction, so that the bubbles can be extracted to achieve auxiliary air exhaust, and the pouring construction quality is further ensured.

Description

Technical Field

[0001] This invention relates to the field of concrete vibrators, and in particular to a vibrator and construction method based on specific gravity adjustment. Background Technology

[0002] With my country's significant investment in transportation infrastructure, concrete is increasingly used in highways and railways, leading to higher requirements for its appearance. The evaluation of concrete appearance quality is a crucial indicator of overall project quality and plays a vital role in project quality assessment. Air bubbles, a major quality defect on the concrete surface, are small pits that appear after pouring, typically regular or irregular in shape with a nearly circular outline, severely affecting the concrete's appearance. Vibration can compact concrete and improve its appearance; however, vibrators have difficulty penetrating horizontal or near-horizontal areas of concrete components, such as the bottom flanges of T-beams, the inclined sides of box girders, and their flanges, making it difficult for air bubbles to escape. Currently, there is no satisfactory solution to this problem. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vibrator and construction method based on specific gravity adjustment, which can make the vibrator reach the positions that are not normally easy to reach for vibration by adjusting the specific gravity. In a preferred embodiment, negative pressure can be used to achieve auxiliary air exhaust, so as to improve the appearance and pouring quality of some difficult-to-vent positions.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a vibrator based on specific gravity adjustment, comprising a cylinder, a rotating shaft provided inside the cylinder, the rotating shaft being connected to an eccentric vibrating block, a specific gravity adjustment bladder provided inside the cylinder, the specific gravity adjustment bladder being connected to an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe being used to fill the specific gravity adjustment bladder with media of different specific gravities.

[0005] In a preferred embodiment, the vibrator is configured to make the overall specific gravity of the vibrator greater than, equal to, or less than that of the concrete by inputting media with different specific gravities.

[0006] In a preferred embodiment, the outer wall of the cylinder is a breathable grid structure.

[0007] In a preferred embodiment, the cylinder body employs multiple spaced vertical rods connected by support rings to form a breathable grid structure.

[0008] In the preferred embodiment, a breathable and water-resistant covering layer is provided outside the cylinder; The cylinder is also connected to an exhaust pipe, which is used to expel air from the cylinder.

[0009] In a preferred embodiment, there are at least two eccentric vibration blocks, located at different positions on the rotating shaft, and the eccentric vibration blocks are arranged opposite each other on the circumferential projection. The capsule is ring-shaped, and the axis of rotation passes through the capsule.

[0010] In a preferred embodiment, the cylinder and the eccentric vibrating block are made of aluminum alloy.

[0011] In a preferred embodiment, a rotating connector is also provided. One end of the rotating connector is connected to the exhaust pipe, the inlet pipe, and the outlet pipe, while the other end of the rotating connector is connected to the negative pressure pump, the gas tank, and the water pump.

[0012] In the preferred embodiment, the rotating connector is divided into two parts: one part is provided with an interface for an exhaust pipe, an inlet pipe, and a drain pipe; the other part is provided with an exhaust pipe connecting pipe, a drain pipe arc joint, and an inlet pipe arc joint. The end faces of the two parts slide against each other so that, under rotational conditions, the exhaust pipe is connected to the exhaust pipe connecting pipe, and the inlet pipe and outlet pipe are connected to the outlet pipe arc joint and the inlet pipe arc joint, respectively.

[0013] A construction method using the above-mentioned specific gravity-adjusted vibrator involves, for a concrete surface at or near a horizontal plane, introducing air into the bladder to make the specific gravity of the vibrator lower than that of the concrete, and then vibrating it.

[0014] This invention provides a vibrator and construction method based on specific gravity adjustment. By adjusting the specific gravity, the vibrator can reach certain corners and upper surfaces for vibration, improving the pouring quality in areas that are difficult to vibrate in the prior art. In a preferred embodiment, the grid structure, combined with a breathable and water-resistant covering layer and negative pressure extraction, can extract air bubbles to achieve auxiliary venting, further ensuring the quality of the pouring construction. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 for Figure 1 A schematic diagram of the AA section.

[0017] Figure 3 This is a schematic diagram of the rotating connector in this invention.

[0018] Figure 4 This is a schematic diagram of the vibrator in use according to the present invention.

[0019] In the diagram: 1. Exhaust pipe; 2. Inlet pipe; 3. Outlet pipe; 4. Rotating shaft; 5. Eccentric block; 6. Bag body; 7. Cylinder body; 8. Air-permeable and water-blocking covering layer; 9. Support ring; 10. Rotating connector; 11. Exhaust pipe connecting pipe; 12. Outlet pipe arc joint; 13. Inlet pipe arc joint; 100. Vibrator; 101. Concrete; 102. Roller; 103. Discharge valve; 104. Negative pressure pump; 105. Air tank; 106. Water pump. Detailed Implementation

[0020] Example 1: like Figure 1 , 2 A vibrator based on specific gravity adjustment includes a cylinder 7, inside which is a rotating shaft 4. Preferably, the rotating shaft 4 is a flexible shaft, connected to an eccentric vibrating block 5. A specific gravity adjustment bladder 6 is provided inside the cylinder 7, connected to an inlet pipe 2 and an outlet pipe 3. The inlet pipe 2 and outlet pipe 3 are used to fill the specific gravity adjustment bladder 6 with media of different specific gravities. In a preferred embodiment, the cylinder 7 and the eccentric vibrating block 5 are made of aluminum alloy. In a preferred embodiment, the vibrator 100 is configured to allow the overall specific gravity of the vibrator (100) to be greater than, equal to, or less than the specific gravity of the concrete 2 by inputting media of different specific gravities. The specific gravity of aluminum alloy is approximately 3, the specific gravity of wet concrete is approximately 2.4, and the specific gravity of the vibrator 100, due to its hollow structure, is set to approximately 2.2. By filling the specific gravity adjustment bladder 6 with water, the specific gravity of the vibrator 100 can reach 2.5, while injecting air and extracting water results in a specific gravity of 2.2. In another alternative, for concrete with a higher specific gravity, such as ultra-high performance concrete, the vibrator 100 can also be made of carbon steel or alloy steel, and the specific gravity of the vibrator 100 can be adjusted by using the volume ratio of the capsule 6.

[0021] Preferred solutions include Figure 2 In this process, the outer wall of the cylinder 7 is a breathable grid structure, which allows water and air to pass through the outer wall of the cylinder 7.

[0022] Preferred solutions include Figure 2 In this design, the cylinder 7 employs multiple spaced vertical rods connected by support rings 9, forming a breathable grid structure. This structure allows water and air to pass through the outer wall of the cylinder 7. Preferably, in this example, the width of the vertical rods is 3-5 mm, the gap between the vertical rods is 0.5 mm, and the thickness of the vertical rods is 3 mm. It should be noted that the gaps between the vertical rods also constitute channels for gas passage.

[0023] Preferred solutions include Figure 2In the middle, an air-permeable and water-blocking covering layer 8 is provided outside the cylinder 7; the air-permeable and water-blocking covering layer 8 is made of wear-resistant nylon or aramid fiber woven fabric, which allows only gas to pass through, but not water, so as to prevent water from escaping and causing insufficient hydration reaction of concrete. After testing, the air-permeable and water-blocking covering layer 8 can be reused for 10 to 20 vibration operations before it needs to be replaced.

[0024] The cylinder 7 is also connected to the exhaust pipe 1, which is used to exhaust the air inside the cylinder 7, i.e., to assist in the exhaust of concrete.

[0025] Preferred solutions include Figure 1 In this process, there are at least two eccentric vibrating blocks 5, which are located at different positions on the rotating shaft 4. The eccentric vibrating blocks 5 are arranged opposite each other on the circumferential projection. The rotating shaft 4 drives the eccentric vibrating blocks 5 to rotate, causing the vibrator 100 to vibrate and compact the concrete.

[0026] The capsule 6 is annular, and the rotating shaft 4 passes through the capsule 6 with sufficient clearance at the point of passage. Preferably, the capsule 6 is located on the rotating shaft 4 between the eccentric vibrating blocks 5.

[0027] Preferred solutions include Figure 3 The system also includes a rotating connector 10. One end of the rotating connector 10 is connected to the exhaust pipe 1, the inlet pipe 2, and the outlet pipe 3, while the other end is connected to the negative pressure pump 104, the gas tank 105, and the water pump 106. This structure facilitates maintaining the connection between the exhaust pipe 1, the inlet pipe 2, and the outlet pipe 3 during rotation. It should be noted that the inlet pipe 2 and the outlet pipe 3 can be switched at different rotation angles.

[0028] Preferred solutions include Figure 4 In the middle, the rotating connector 10 is divided into two parts. One part is provided with the interface of exhaust pipe 1, inlet pipe 2 and outlet pipe 3, and the other part is provided with exhaust pipe connecting pipe 11, outlet pipe arc joint 12 and inlet pipe arc joint 13. The end faces of the two parts slide against each other, so that under rotational conditions, exhaust pipe 1 is connected to exhaust pipe connecting pipe 11, and inlet pipe 2 and outlet pipe 3 are connected to outlet pipe arc joint 12 and inlet pipe arc joint 13, respectively. This structure ensures that inlet pipe 2 and outlet pipe 3 are connected with a high probability, and that inlet pipe 2 and outlet pipe 3 are not connected to the same outlet pipe arc joint 12 or inlet pipe arc joint 13. That is, the distance between outlet pipe arc joint 12 and inlet pipe arc joint 13 is greater than the diameter of inlet pipe 2 and outlet pipe 3.

[0029] Example 2: like Figure 4 In one construction method employing the aforementioned gravity-adjustable vibrator, for concrete surfaces at or near-horizontal levels, air is introduced into the bladder 6 to lower the specific gravity of the vibrator 100 below that of the concrete before vibration. See also... Figure 4 The specific construction method is as follows: After pouring, the vibrator 100 on the drum 102 is lowered. At this time, to ensure smooth descent, the water pump 106 is started, injecting water into the bladder 6 of the vibrator 100. The discharge valve 103 of the three-way valve connected to the air tank 105 is opened, and the connection between the discharge valve 103 and the air tank 105 is closed until water comes out of the discharge valve 103 of the three-way valve connected to the air tank 105, indicating that the bladder 6 is full of water. The motor inside the vibrator 100 (not shown in the figure) is started. The motor drives the eccentric block 5 to rotate through the shaft 4 to generate vibration. During the vibration process, the negative pressure pump 104 is started to draw a vacuum from the exhaust pipe 1 and maintain a negative pressure in the exhaust pipe 1 to assist in the exhaust of air from the concrete. When the vibrator 100 reaches the bottom position, the discharge valve 103 connected to the output port of the water pump 106 is switched to be open to the atmosphere, and the water pump 106 is not connected. Switch the discharge valve 103 of the air tank 105 or air compressor output port to connect to the rotating connector 10 but not to the atmosphere. The air tank 105 or air compressor outputs compressed air to drain the water from the bladder 6. To ensure smooth drainage, preferably, the drain pipe 3 extends to the bottom of the bladder 6 until all the water is discharged from the discharge valve 103 of the water pump 106 output port. At this point, the specific gravity of the vibrator 100 is less than that of the concrete. Under the action of vibration, the vibrator 100 floats to the surface of the concrete, and during the floating process, it assists in the vibration and air release of the concrete. Then, continue to lower the drum 102 until the vibrator 100 floats to the upper surface of the corner, completing the concrete vibration and assisting in the discharge of air bubbles from areas where they have accumulated.

[0030] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A vibrator based on specific gravity adjustment, characterized in that: Includes a cylinder (7), inside which is a rotating shaft (4), which is connected to an eccentric vibrating block (5), and inside the cylinder (7) is a specific gravity regulating bladder (6), which is annular, and the rotating shaft (4) passes through the bladder (6). The specific gravity regulating bladder (6) is connected to the inlet pipe (2) and the outlet pipe (3), which are used to fill the specific gravity regulating bladder (6) with media of different specific gravities. The vibrator (100) is set to make the overall specific gravity of the vibrator (100) greater than, equal to or less than that of the concrete (2) by inputting media with different specific gravities; by adjusting the specific gravity, the vibrator can reach some corners and upper surfaces for vibration. The cylinder (7) and the eccentric vibrating block (5) are made of aluminum alloy; The outer wall of the cylinder (7) is a breathable grid structure; An air-permeable and water-resistant covering layer (8) is provided outside the cylinder (7); The cylinder (7) is also connected to the exhaust pipe (1), which is used to discharge the air inside the cylinder (7) and assist in discharging the bubbles at the bubble accumulation location.

2. The vibrator based on specific gravity adjustment according to claim 1, characterized in that: The cylinder (7) is made of multiple vertical rods arranged at intervals, and the vertical rods are connected by support rings (9) to form a breathable grid structure.

3. The vibrator based on specific gravity adjustment according to any one of claims 1 to 2, characterized in that: There are at least two eccentric vibration blocks (5), which are located at different positions on the rotating shaft (4) and are arranged opposite each other on the circumferential projection.

4. The vibrator based on specific gravity adjustment according to claim 3, characterized in that: It is also equipped with a rotating connector (10), one end of which is connected to the exhaust pipe (1), the inlet pipe (2) and the outlet pipe (3), and the other end of which is connected to the negative pressure pump (104), the gas tank (105) and the water pump (106).

5. The vibrator based on specific gravity adjustment according to claim 4, characterized in that: The rotating connector (10) is divided into two parts. One part is provided with the interface of the exhaust pipe (1), the inlet pipe (2) and the outlet pipe (3). The other part is provided with the exhaust pipe connecting pipe (11), the outlet pipe arc joint (12) and the inlet pipe arc joint (13). The end faces of the two parts slide against each other so that, under rotation, the exhaust pipe (1) is connected to the exhaust pipe connecting pipe (11), and the inlet pipe (2) and the outlet pipe (3) are connected to the outlet pipe arc joint (12) and the inlet pipe arc joint (13) respectively.

6. A construction method using a vibrator based on specific gravity adjustment as described in any one of claims 1 to 5, characterized in that: For concrete surfaces that are at or near the horizontal plane, air is introduced into the bladder (6) to make the specific gravity of the vibrator (100) lower than that of the concrete, and then the concrete is vibrated.

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