Automatic frequency conversion concrete vibrating rod
By integrating the motor and frequency converter in the concrete vibrator and automatically adjusting the vibration frequency using pressure sensors, the problem of fixed frequency vibrator relying on workers' experience is solved, and the stability and density and strength of concrete components are achieved.
Patent Information
- Application Number
- CN202422554213.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The fixed frequency vibrator used in the prior art requires the experience of workers. The vibration quality is unstable and the compactness and strength of concrete components cannot be guaranteed.
An automatic frequency conversion concrete vibrating rod is designed. By integrating a motor, frequency converter and pressure sensor inside the vibrating rod, the pressure sensor is used to detect the compactness of the concrete, and the vibration frequency is automatically adjusted to ensure the uniform and dense concrete.
It realizes stable vibration quality without relying on workers' experience, ensuring the compactness and strength of concrete components, simple operation and more convenient use.
Smart Images
Figure CN223227075U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete vibration, in particular to an automatic frequency conversion concrete vibrating rod. Background Art
[0002] Due to the varying complexity of cast structures, increasing reinforcement ratios, and the need for embedded components, on-site concrete vibration is difficult to automate and still requires manual operation. Currently, workers generally use fixed-frequency vibrators, judging the density of concrete by the feel of the vibrator inserted into the concrete, the vibration time, and the presence of surface slurry. This method relies on workers' long-term operational experience and subjective judgment, resulting in unstable vibration quality and an inability to guarantee the density and strength of concrete components. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an automatic variable frequency concrete vibrator, which aims to solve the technical problems existing in the prior art that the currently commonly used fixed frequency vibrators have high operating requirements for workers, unstable vibration quality, and cannot guarantee the density and strength of concrete components.
[0004] The technical solution of the utility model is: an automatic frequency-variable concrete vibrator, comprising a vibrator body, a connecting head and a rod head respectively connected to the upper and lower ends of the vibrator body, a rotating shaft is rotatably installed inside the vibrator body, an eccentric block is provided on the rotating shaft, a motor is provided on the upper part of the vibrator body, the rotating shaft is connected to the power output shaft of the motor, and the motor is connected to a frequency converter; a pressure sensor is provided inside the bottom of the vibrator body, the pressure sensor is covered with a sealing protrusion, the sealing protrusion is covered with a sealing cover plate, the rod head is connected to the vibrator body through a sealing sleeve, the sealing sleeve is fixedly connected to the lower end of the vibrator body, the rod head is installed in the sealing sleeve through a limiting floating mechanism, the upper end of the rod head is pressed against the sealing cover plate, thereby making the sealing cover plate, the sealing protrusion and the pressure sensor in close contact, and the pressure sensor is connected to the frequency converter.
[0005] Furthermore, the interior of the vibrating rod body in the present invention is divided into an upper space and a lower space by a partition, the motor and the inverter are installed in the upper space, the rotating shaft is installed in the lower space, the upper end of the rotating shaft passes through the upper space and is connected to the partition through a first bearing, and the lower end of the rotating shaft extends to the bottom of the lower space and is connected to the inner wall of the vibrating rod body through a second bearing.
[0006] Furthermore, the bottom of the vibrating rod body in the present invention is provided with an upper concave cavity and a lower concave cavity connected up and down, the pressure sensor is installed at the bottom of the upper concave cavity, the inner wall of the upper concave cavity is provided with a sealing gasket, the sealing protrusion is installed in the lower concave cavity and the front end of the sealing protrusion extends into the upper concave cavity and fits tightly with the sealing gasket; the bottom of the vibrating rod body is also provided with a positioning groove, and the sealing cover plate is installed in the positioning groove.
[0007] Furthermore, the lower end of the vibrating rod body in the present invention is provided with a plurality of clamping blocks protruding radially outward, and the sealing sleeve is provided with a plurality of clamping holes corresponding to each of the clamping blocks, and the clamping blocks are fitted in the clamping holes.
[0008] Furthermore, the limit floating mechanism described in the utility model includes an upper limit groove and a lower limit groove opened in the sealing sleeve, and an upper limit protrusion and a lower limit protrusion respectively provided on the rod head and cooperating with the upper limit groove and the lower limit groove. A spring is also provided in the upper limit groove, and the two ends of the spring are respectively against the bottom of the upper limit groove and the lower end face of the upper limit protrusion.
[0009] Furthermore, the pressure sensor in the present invention is connected to the frequency converter through a first connecting line, a conduit extending up and down is provided in the lower space of the vibrating rod body, a lower penetrating channel connecting the upper concave cavity and the lower space is provided at the bottom of the vibrating rod body, an upper penetrating channel is provided on the partition, the first connecting line passes through the lower penetrating channel into the conduit and then passes through the upper penetrating channel and is connected to the frequency converter.
[0010] Furthermore, the frequency converter in the present invention is connected to an external power source via a second connecting line, and the second connecting line passes through the connector and extends to the outside.
[0011] Compared with the prior art, the utility model has the following advantages: the vibrating rod of the utility model is divided into a three-section structure, the middle vibrating rod body serves as the main body, and is used to integrate a built-in motor, an eccentric vibration structure, a frequency converter, a pressure sensor and two connecting wires, the top connector is used to lead out the connecting wire to an external power supply, and the bottom rod head is installed and fixed by a specially designed sealing sleeve, which is used to cooperate with the pressure sensor to detect pressure; during the concrete vibration process, the frequency converter controls the vibration frequency of the motor according to the pressure value detected by the pressure sensor. As the pressure value continues to increase, it indicates that the concrete vibration has reached a dense and uniform state. Compared with traditional vibrating rods, the vibrating rod of the utility model is more convenient to use, simple to operate, and highly practical. It does not need to rely too much on the workers' own experience and subjective judgment, and can ensure the stability of the concrete vibration quality and better density and strength of the concrete components. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the internal structure of the utility model;
[0014] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A in the middle.
[0015] Among them: 1. Vibrating rod body; 2. Connector; 3. Rod head; 4. Rotating shaft; 5. Eccentric block; 6. Motor; 7. Frequency converter; 8. Pressure sensor; 9. Sealing protrusion; 10. Sealing cover; 11. Sealing sleeve; 12. Interlayer; 13. First bearing; 14. Second bearing; 15. Upper concave cavity; 16. Lower concave cavity; 17. Sealing gasket; 18. Positioning groove; 19. Block; 20. Upper limit groove; 21. Lower limit groove; 22. Upper limit convex part; 23. Lower limit convex part; 24. Spring; 25. First connecting line; 26. Conduit; 27. Lower penetration channel; 28. Upper penetration channel; 29. Second connecting line. DETAILED DESCRIPTION
[0016] The following is a detailed description of the specific implementation of the present invention with reference to the accompanying drawings.
[0017] Example:
[0018] The accompanying drawings show a specific embodiment of an automatic variable frequency concrete vibrator of the present invention, which mainly includes a vibrator body 1, a connecting head 2 and a rod head 3 respectively connected to the upper and lower ends of the vibrator body 1, wherein, in combination with Figure 2 As shown, the interior of the vibrating rod body 1 is divided into an upper space and a lower space by a partition 12. A motor 6 is provided in the upper space, and the motor 6 is connected to a frequency converter 7, which is also located in the upper space; a rotating shaft 4 is installed in the lower space, and the upper end of the rotating shaft 4 passes through the upper space and is connected to the power output shaft of the motor 6, and the lower end extends to the bottom of the lower space. In this embodiment, a first bearing 13 is provided on the partition 12, and a second bearing 14 is provided on the bottom inner wall of the lower space of the vibrating rod body 1. The rotating shaft 4 is rotatably installed with the first bearing 13 and the second bearing 14. Two eccentric blocks 5 are fixed on the rotating shaft 4. The two eccentric blocks 5 are placed in the lower space and are spaced apart from each other.
[0019] The bottom of the vibrator body 1 is provided with an upper cavity 15 and a lower cavity 16 that are connected vertically. The bottom of the upper cavity 15 is equipped with a pressure sensor 8, and the inner wall of the upper cavity 15 is provided with a sealing gasket 17. A sealing protrusion 9 is installed in the lower cavity 16. The front end of the sealing protrusion 9 extends into the upper cavity 15, contacts and fits with the pressure sensor 8, and fits tightly with the sealing gasket 17. The sealing protrusion 9 is used to cover the pressure sensor 8 and ensure the installation seal of the pressure sensor 8. The bottom of the vibrator body 1 is also provided with a positioning groove 18, and a sealing cover plate 10 is installed in the positioning groove 18. The sealing cover plate 10 contacts and fits with the sealing protrusion 9. The sealing cover plate 10 is used to cover the sealing protrusion 9 and further ensure the installation seal of the pressure sensor 8.
[0020] The rod head 3 is connected to the vibrating rod body 1 through the sealing sleeve 11. In this embodiment, the lower end of the vibrating rod body 1 is provided with two clamping blocks 19 protruding radially outward. Preferably, the two clamping blocks 19 can be symmetrically arranged on both sides of the lower end of the vibrating rod body 1. The sealing sleeve 11 is provided with two clamping holes corresponding to the two clamping blocks 19. The clamping blocks 19 are fitted into the clamping holes, thereby firmly connecting the sealing sleeve 11 to the lower end of the vibrating rod body 1.
[0021] In this embodiment, combined with Figure 3 As shown, the sealing sleeve 11 has an upper limit groove 20 and a lower limit groove 21 formed in the upper and lower parts. The rod head 3 is provided with an upper limit protrusion 22 and a lower limit protrusion 23 that respectively cooperate with the upper limit groove 20 and the lower limit groove 21. A spring 24 is provided in the upper limit groove 20, and the two ends of the spring 24 respectively abut against the bottom of the upper limit groove 20 and the lower end surface of the upper limit protrusion 22. The rod head 3 is installed at the lower end of the vibrating rod body 1 through the sealing sleeve 11. Under the action of the spring 24, the upper end of the rod head 3 is tightly pressed against the sealing cover plate 10, thereby ensuring close contact between the sealing cover plate 10, the sealing protrusion 9, and the pressure sensor 8, ensuring the stability of the pressure detection. In addition, the cooperation between the lower limit groove 21 and the lower limit protrusion 23 can further reduce the floating stroke range of the rod head 3, preventing the rod head 3 from being excessively displaced when the vibration frequency is too fast, thereby affecting the pressure detection, further ensuring the stability of the pressure detection.
[0022] Furthermore, a vertically extending conduit 26 is provided within the lower space of the vibrator body 1 and is fixedly mounted on the inner wall of the vibrator body 1. A lower through-channel 27 is provided at the bottom of the vibrator body 1, with its upper and lower ends communicating with the lower space of the vibrator body 1 and the bottom of the upper cavity 15, respectively. An upper through-channel 28 is provided on the partition 12, with its upper and lower ends communicating with the upper and lower spaces of the vibrator body 1, respectively. The pressure sensor 8 is connected to the frequency converter 7 via a first connecting line 25, which passes from the lower through-channel 27 into the conduit 26 and then exits through the upper through-channel 28 to connect to the frequency converter 7.
[0023] The frequency converter 7 is also connected to an external power source via a second connecting line 29 , and the second connecting line 29 passes through the connector 2 and extends to the outside.
[0024] When the vibrating rod of the present invention is used, it is inserted into the concrete, connected to an external power supply via the second connecting line 29, and the motor 6 is started, causing the rotating shaft 4 to rotate at high speed. Under the action of the two eccentric blocks 5, the force is transmitted to the entire vibrating rod through the first bearing 13 and the second bearing 14, causing the vibrating rod to generate high-frequency vibration, thereby driving the concrete to vibrate over a large area, thereby achieving the purpose of accelerating the discharge of bubbles. During the entire vibration process, the pressure sensor 8 monitors the vibration pressure in real time, and the frequency converter 7 controls the vibration frequency of the motor 6 according to the pressure value detected by the pressure sensor 8. When the monitored pressure is low, indicating that the concrete is not yet dense, the vibration frequency can be increased and continued. As the monitored pressure gradually increases, indicating that the concrete vibration has gradually reached a dense and uniform state, the vibration frequency can also be adjusted to gradually decrease. Compared with traditional vibrating rods, the vibrating rod of the present invention is more convenient to use, simple to operate, and highly practical. It does not need to rely too much on the worker's own experience and subjective judgment, can ensure the stable quality of concrete vibration, and improve the density and strength of concrete components.
[0025] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.
Claims
1. An automatic variable frequency concrete vibrator, characterized by: The invention comprises a vibrating rod body (1), a connecting head (2) and a rod head (3) respectively connected to the upper and lower ends of the vibrating rod body (1); a rotating shaft (4) is rotatably installed inside the vibrating rod body (1); an eccentric block (5) is provided on the rotating shaft (4); a motor (6) is provided at the upper part of the interior of the vibrating rod body (1); the rotating shaft (4) is connected to the power output shaft of the motor (6); the motor (6) is connected to a frequency converter (7); a pressure sensor (8) is provided inside the bottom of the vibrating rod body (1); and the pressure sensor (8) is covered with a sealing protrusion. (9), the sealing protrusion (9) is covered with a sealing cover plate (10), the rod head (3) is connected to the vibrating rod body (1) through a sealing sleeve (11), the sealing sleeve (11) is fixedly connected to the lower end of the vibrating rod body (1), the rod head (3) is installed in the sealing sleeve (11) through a limiting floating mechanism, the upper end of the rod head (3) is pressed against the sealing cover plate (10), thereby making the sealing cover plate (10), the sealing protrusion (9), and the pressure sensor (8) in close contact, and the pressure sensor (8) is connected to the frequency converter (7).
2. The automatic variable frequency concrete vibrator according to claim 1, characterized in that: The interior of the vibrating rod body (1) is divided into an upper space and a lower space by a partition (12); the motor (6) and the frequency converter (7) are installed in the upper space; the rotating shaft (4) is installed in the lower space; the upper end of the rotating shaft (4) passes through the upper space and is connected to the partition (12) through a first bearing (13); the lower end of the rotating shaft (4) extends to the bottom of the lower space and is connected to the inner wall of the vibrating rod body (1) through a second bearing (14).
3. The automatic variable frequency concrete vibrator according to claim 2, characterized in that: The bottom of the vibrating rod body (1) is provided with an upper concave cavity (15) and a lower concave cavity (16) which are connected to each other. The pressure sensor (8) is installed at the bottom of the upper concave cavity (15). The inner wall of the upper concave cavity (15) is provided with a sealing gasket (17). The sealing protrusion (9) is installed in the lower concave cavity (16) and the front end of the sealing protrusion (9) extends into the upper concave cavity (15) and is tightly fitted with the sealing gasket (17). The bottom of the vibrating rod body (1) is also provided with a positioning groove (18), and the sealing cover plate (10) is installed in the positioning groove (18).
4. The automatic variable frequency concrete vibrator according to claim 1, characterized in that: The lower end of the vibrating rod body (1) is provided with a plurality of clamping blocks (19) protruding radially outward, and the sealing sleeve (11) is provided with a plurality of clamping holes corresponding to each of the clamping blocks (19) one by one, and the clamping blocks (19) are clamped in cooperation with the clamping holes.
5. The automatic variable frequency concrete vibrator according to claim 1, characterized in that: The limit floating mechanism comprises an upper limit groove (20) and a lower limit groove (21) which are opened in the sealing sleeve (11) from top to bottom, an upper limit convex portion (22) and a lower limit convex portion (23) which are respectively arranged on the rod head (3) and cooperate with the upper limit groove (20) and the lower limit groove (21), and a spring (24) is also provided in the upper limit groove (20), and the two ends of the spring (24) are respectively against the bottom of the upper limit groove (20) and the lower end surface of the upper limit convex portion (22).
6. The automatic variable frequency concrete vibrator according to claim 3, characterized in that: The pressure sensor (8) is connected to the frequency converter (7) via a first connecting line (25); a conduit (26) extending upward and downward is provided in the lower space of the vibrating rod body (1); a lower penetrating channel (27) connecting the upper concave cavity (15) and the lower space is provided at the bottom of the vibrating rod body (1); an upper penetrating channel (28) is provided on the partition (12); the first connecting line (25) passes through the lower penetrating channel (27) into the conduit (26) and then passes out from the upper penetrating channel (28) and is connected to the frequency converter (7).
7. The automatic variable frequency concrete vibrator according to claim 1, characterized in that: The frequency converter (7) is connected to an external power source via a second connecting line (29), and the second connecting line (29) passes through the connector (2) and extends to the outside.
Citation Information
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