A concrete vibrator

Abstract

The utility model provides a kind of concrete vibrator, belong to building construction technical field, including drive assembly, transmission shaft piece, telescopic connecting piece and vibrating rod;Transmission shaft piece has hose and the flexible shaft installed in hose;One end of hose is connected with drive assembly, and one end of flexible shaft is connected with the output end of drive assembly;Telescopic connecting piece has inner telescopic pipe and the push-pull mechanism installed in the outer side of inner telescopic pipe;One end of telescopic connecting piece is fixedly connected with the other end of hose, and push-pull mechanism is used to drive inner telescopic pipe to lengthen or shorten;The other end of flexible shaft is through inner telescopic pipe;Vibrating rod is connected with the other end of telescopic connecting piece, and the other end of flexible shaft is drivingly connected with eccentric shaft in vibrating rod;Flexible shaft has the telescopic amount compatible with the lengthening or shortening of telescopic connecting piece.The concrete vibrator provided by the utility model significantly improves the convenience, and optimizes vibration effect.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and more specifically, it relates to a concrete vibrator. Background Technology

[0002] In the fields of building construction, municipal construction, and bridge and tunnel construction, concrete, as a core structural material, directly determines the load-bearing capacity, durability, and safety performance of a project through its pouring quality. Concrete vibration is a crucial step in ensuring pouring quality—high-frequency vibration effectively removes air bubbles from the concrete, reduces aggregate gaps, and increases concrete density by more than 30%, preventing defects such as honeycomb, pitting, and cracks later on. Therefore, concrete vibrators have become an indispensable core piece of equipment in modern concrete construction.

[0003] Currently, widely used concrete vibrators in the industry mainly consist of three core components: a drive motor, a flexible drive shaft, and a vibrating rod. Their working principle is as follows: the drive motor converts electrical energy into mechanical kinetic energy, generating high-frequency rotation or reciprocating motion; the flexible drive shaft, as the power transmission medium, overcomes obstacles in the construction space with its flexibility, precisely transmitting the motor's kinetic energy to the vibrating rod; the eccentric block inside the vibrating rod rotates with the power, generating centrifugal force, which is then converted into high-frequency vibration to act on the concrete to be poured, achieving compaction. However, existing concrete vibrators require operators to constantly adjust the depth of the vibrating rod by manipulating the flexible drive shaft, failing to automatically adapt to the concrete pouring depth, resulting in poor ease of use and insufficient vibration effect. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete vibrator to solve the technical problems of existing concrete vibrators that cannot automatically adapt to the concrete pouring depth, resulting in poor convenience during use and insufficient vibration effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a concrete vibrator, comprising: Driver components; A drive shaft assembly has a flexible hose and a flexible shaft installed within the flexible hose; one end of the flexible hose is connected to the drive assembly, and one end of the flexible shaft is connected to the output end of the drive assembly. A telescopic connector has an inner telescopic tube and a push-pull mechanism installed on the outside of the inner telescopic tube; one end of the telescopic connector is fixedly connected to the other end of the flexible tube, and the push-pull mechanism is used to drive the inner telescopic tube to extend or shorten; the other end of the flexible shaft passes through the inner telescopic tube. The vibrating rod is connected to the other end of the telescopic connector, and the other end of the flexible shaft is connected to the eccentric rotating shaft inside the vibrating rod. The flexible shaft has a telescopic range that is adapted to the elongation or shortening of the telescopic connector.

[0006] In one possible implementation, both ends of the telescopic connector are provided with connecting plates, the inner telescopic tube and the push-pull mechanism are both installed between the two connecting plates and connected to the two connecting plates; one end of the hose is connected to the side of one connecting plate away from the inner telescopic tube, and one end of the vibrator is connected to the side of the other connecting plate away from the inner telescopic tube.

[0007] In one possible implementation, both the hose and the vibrating rod are provided with mounting plates that are opposite to and fixedly connected to the two connecting plates.

[0008] In one possible implementation, the telescopic connector further includes an outer telescopic tube fitted around the outside of the inner telescopic tube, and there is an installation gap between the outer telescopic tube and the inner telescopic tube. The two ends of the outer telescopic tube are respectively fixedly connected to the two connecting plates, and the push-pull mechanism is installed within the installation gap.

[0009] In one possible implementation, the inner diameter of the hose is more than twice the outer diameter of the flexible shaft; the length of the flexible shaft is greater than the length of the hose, and the difference in length is greater than or equal to the telescopic extension amount of the telescopic connector.

[0010] In one possible implementation, the other end of the flexible shaft is provided with a rigid square shaft section, the eccentric rotating shaft is provided with an outwardly extending connecting shaft section, the connecting shaft section is provided with a square hole that slides and is connected to the rigid square shaft section, and the sliding length between the rigid square shaft section and the square hole is greater than the extension and retraction amount of the telescopic connector.

[0011] In one possible implementation, the end of the vibrating rod away from the telescopic connector is provided with a rangefinder for monitoring the concrete depth, and the drive assembly includes a motor and a controller connected to the motor. Both the rangefinder and the push-pull mechanism are connected to the controller.

[0012] In one possible implementation, the concrete vibrator further includes a timer and a frequency converter connected to the controller for adjusting the working period and vibration frequency of the vibrator.

[0013] In one possible implementation, one end of the vibrating rod is provided with an installation groove and a protective net installed at the opening of the installation groove, and the rangefinder is installed in the installation groove.

[0014] In one possible implementation, the drive assembly includes a base and a motor mounted on the base, the base having a plurality of wheels.

[0015] The beneficial effects of the concrete vibrator provided by this utility model are as follows: Compared with the prior art, during the construction process, the worker connects the drive assembly, transmission shaft, telescopic connector, and vibrator rod, and inserts the vibrator rod into the concrete. The drive assembly is then activated, and its output drives the flexible shaft to rotate at high speed. The flexible shaft transmits kinetic energy to the eccentric shaft inside the vibrator rod, causing it to rotate rapidly and generate centrifugal force, which is then converted into high-frequency vibration of the vibrator rod. This high-frequency vibration causes relative movement between concrete particles, causing air bubbles to float upwards and escape from the surface, thus eliminating pores. Simultaneously, it promotes the dense arrangement of concrete aggregates, ensuring that all parts of the concrete are dense and uniform. Depending on the depth of the poured concrete, the extension length of the inner telescopic tube is adjusted by controlling the push-pull mechanism of the telescopic connector, causing the vibrator rod to move synchronously deeper. At this time, the flexible shaft, having an adaptable telescopic range, naturally extends with the extension of the inner telescopic tube, always maintaining a transmission connection with the output of the drive assembly and the eccentric shaft of the vibrator rod, thereby enabling comprehensive vibration of the concrete. This method significantly improves ease of use, allowing for easy control of the vibrator depth via a push-pull mechanism. It also avoids construction interruptions caused by manual adjustments, improving vibration efficiency. Furthermore, the precise adjustment capability of the inner telescopic tube ensures the vibrator is always at the appropriate depth for concrete pouring (neither too shallow, resulting in residual air bubbles at the bottom, nor too deep, touching the formwork or reinforcing steel and causing aggregate segregation). The adaptable telescopic range of the flexible shaft and the auxiliary transmission design of the hose together guarantee the continuity and stability of power transmission, enabling the vibrator to output uniform high-frequency vibration at different depths, greatly optimizing the vibration effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a concrete vibrator provided in an embodiment of the present utility model; Figure 2 Connection diagram of the transmission shaft, telescopic connector, and vibrator provided in the embodiments of this utility model. Figure 1 ; Figure 3 Connection diagram of the transmission shaft, telescopic connector, and vibrator provided in the embodiments of this utility model. Figure 2 ; Figure 4This is a schematic diagram of the connection between the connecting shaft segment and the rigid square shaft segment provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of the vibrating rod provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram showing the connection between the rangefinder and the vibrator provided in an embodiment of the present invention.

[0018] The following are the labeling elements in the figure: 10. Drive assembly; 11. Base; 12. Motor; 13. Wheels; 20. Drive shaft; 21. Hoses; 22. Flexible shaft; 23. Mounting plate; 24. Rigid square shaft section; 25. Bolts; 26. Screw holes; 27. Bosses; 30. Telescopic connectors; 31. Inner telescopic tube; 32. Push-pull mechanism; 33. Connecting plate; 34. Outer telescopic tube; 35. Installation spacing; 40. Vibrator; 41. Eccentric shaft; 42. Connecting shaft section; 43. Square hole; 44. Rangefinder; 45. Mounting groove; 46. Protective net; 47. Sleeve; 48. Stud; 50. Controller; 51. Timer; 52. Frequency converter. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Please see Figures 1 to 6 The concrete vibrator provided by this utility model will now be described. A concrete vibrator includes a drive assembly 10, a transmission shaft 20, a telescopic connector 30, and a vibrating rod 40. The transmission shaft 20 has a flexible hose 21 and a flexible shaft 22 installed within the flexible hose 21. One end of the flexible hose 21 is connected to the drive assembly 10, and one end of the flexible shaft 22 is connected to the output end of the drive assembly 10. The telescopic connector 30 has an inner telescopic tube 31 and a push-pull mechanism 32 installed outside the inner telescopic tube 31. One end of the telescopic connector 30 is fixedly connected to the other end of the flexible hose 21, and the push-pull mechanism 32 is used to drive the inner telescopic tube 31 to extend or shorten. The other end of the flexible shaft 22 passes through the inner telescopic tube 31. The vibrating rod 40 is connected to the other end of the telescopic connector 30, and the other end of the flexible shaft 22 is drively connected to an eccentric rotating shaft 41 inside the vibrating rod 40. The flexible shaft 22 has a telescopic amount adapted to the extension or shortening of the telescopic connector 30.

[0024] Compared with the prior art, the concrete vibrator provided by this utility model optimizes the structure of the transmission shaft 20 by arranging the telescopic connector 30, thus constructing a vibrator that can automatically adapt to the concrete pouring depth. The drive component 10 in the concrete vibrator is responsible for converting electrical energy or other energy into mechanical kinetic energy. The transmission shaft 20 is composed of a flexible hose 21 and a flexible shaft 22. The flexible hose 21 plays a protective and guiding role, while the flexible shaft 22 is responsible for kinetic energy transmission. An eccentric rotating shaft 41 is set inside the vibrator rod 40, which generates high-frequency vibration after receiving mechanical kinetic energy. At the same time, the telescopic connector 30, composed of an inner telescopic tube 31 and a push-pull mechanism 32, is the key to achieving depth self-adaptation. The flexible shaft 22 serves as the core power transmission medium. One end is precisely connected to the output end of the drive assembly 10, and the other end passes through the inner telescopic tube 31 of the subsequent telescopic connector 30, ultimately connecting to the eccentric rotating shaft 41 inside the vibrator 40. The flexible shaft 22 has a flexible redundant length adapted to the telescopic connector 30's extension or retraction, ensuring that the flexible shaft 22 can adjust its length synchronously when the inner telescopic tube 31 extends or retracts, without interrupting power transmission due to stretching or folding. The telescopic connector 30 consists of the inner telescopic tube 31 and an outer push-pull mechanism 32. One end of the mechanism is fixedly connected to the other end of the flexible hose 21. The push-pull mechanism 32 can be controlled manually or electrically to extend or retract the inner telescopic tube 31 axially. The vibrator 40 is directly connected to the other end of the telescopic connector 30. Simultaneously, the other end of the flexible hose 21 forms an auxiliary transmission connection with the eccentric rotating shaft 41 inside the vibrator 40, further ensuring the stability of vibration energy transmission and avoiding potential power loss from a single flexible shaft 22 drive.

[0025] During construction, workers connect the drive assembly 10, transmission shaft 20, telescopic connector 30, and vibrator 40, and insert the vibrator 40 into the concrete. The drive assembly 10 is then started, and its output drives the flexible shaft 22 to rotate at high speed. The flexible shaft 22 transmits kinetic energy to the eccentric shaft 41 inside the vibrator 40, causing the eccentric shaft 41 to rotate rapidly and generate centrifugal force, which is then converted into high-frequency vibration of the vibrator 40. The high-frequency vibration of the vibrator 40 causes relative movement between concrete particles, and air bubbles float upward and escape from the surface due to the vibration, thereby eliminating pores. At the same time, it promotes the dense arrangement of concrete aggregates, ensuring that all parts of the concrete are dense and uniform. Depending on the depth of the poured concrete, the push-pull mechanism 32 of the telescopic connector 30 adjusts the extension length of the inner telescopic tube 31, driving the vibrator 40 to move synchronously deeper. At this time, the flexible shaft 22, due to its adaptable telescopic range, will naturally lengthen with the extension of the inner telescopic tube 31, always maintaining the transmission connection with the output end of the drive component 10 and the eccentric rotating shaft 41 of the vibrator 40, thereby enabling the concrete to be vibrated from all directions. In this way, the ease of use is significantly improved, and the depth of the vibrator 40 can be easily controlled with the push-pull mechanism 32; at the same time, construction interruptions caused by manual adjustment are avoided, improving the efficiency of vibration operation. At the same time, the precise adjustment capability of the inner telescopic tube 31 ensures that the vibrator 40 is always at a reasonable depth of concrete pouring (neither too shallow, resulting in residual air bubbles at the bottom layer, nor too deep, touching the formwork or reinforcing steel, causing aggregate segregation). The adaptable telescopic range of the flexible shaft 22 and the auxiliary transmission design of the flexible hose 21 together ensure the continuity and stability of power transmission, enabling the vibrator 40 to output uniform high-frequency vibration at different depths, greatly optimizing the vibration effect.

[0026] Please see Figures 1 to 3As a specific embodiment of the concrete vibrator provided by this utility model, the telescopic connector 30 has connecting plates 33 at both ends. The inner telescopic tube 31 and the push-pull mechanism 32 are installed between the two connecting plates 33 and connected to the two connecting plates 33. One end of the hose 21 is connected to the side of one connecting plate 33 away from the inner telescopic tube 31, and one end of the vibrator 40 is connected to the side of the other connecting plate 33 away from the inner telescopic tube 31. By adding connecting plates 33 at both ends of the telescopic connector 30, a modular assembly structure is constructed. The connecting plates 33 serve as connecting hubs, confining the inner telescopic tube 31 and the push-pull mechanism 32 between the two connecting plates 33 and connecting them securely. At the same time, the hose 21 and the vibrator 40 are respectively connected to the side of the two connecting plates 33 away from the inner telescopic tube 31, forming a regular transmission link of "hose 21-connecting plate 33-telescopic component-connecting plate 33-vibrator 40". This approach achieves several advantages: First, it enhances structural stability. The connecting plate 33 provides rigid support for the inner telescopic tube 31 and the push-pull mechanism 32, preventing them from shifting or swaying during telescopic movement and ensuring the precise telescopic trajectory of the inner telescopic tube 31. Second, it simplifies assembly and maintenance. The components are modularly connected via the connecting plate 33, eliminating the need to individually connect the hose 21, vibrator 40, and telescopic assembly during installation. Third, it strengthens sealing and protection. The connecting plate 33 can cover the connection gaps between the telescopic assembly and the hose 21 and vibrator 40, reducing the entry of concrete slurry and impurities that could affect the operation of the components.

[0027] Please see Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the concrete vibrator provided by this utility model, both the flexible hose 21 and the vibrating rod 40 are provided with mounting plates 23 that are opposite to and fixedly connected to the two connecting plates 33. The mounting plates 23 and connecting plates 33 are installed in a butt-fitting manner to improve the connection reliability between the flexible hose 21, the vibrating rod 40, and the telescopic connector 30. The mounting plates 23 are integrated with the flexible hose 21 and the vibrating rod 40 in a stable connection state, and their dimensions and interfaces match the connecting plates 33 at both ends of the telescopic connector 30. Precise docking and fixing can be achieved through bolts 25 or other means. The mounting plates 23 increase the contact area between the flexible hose 21, the vibrating rod 40, and the connecting plates 33, and also reduce the assembly difficulty. Both the connecting plates 33 and the mounting plates 23 adopt a flange structure, and a sealing gasket is provided between the connecting plates 33 and the mounting plates 23. A boss 27 is arranged on the mounting plate 23 connected to the vibrating rod 40, and a screw hole 26 is provided through the boss 27 and the mounting plate 23. A stud 48 is fixedly installed at the end of the sleeve 47 of the vibrating rod 40, and the stud 48 is provided with a through hole communicating with the inside of the sleeve 47. During installation, the mounting plate 23 is fixedly connected to the connecting plate 33, and the stud 48 on the sleeve 47 is threaded into the screw hole 26 to realize the connection between the vibrating rod 40 and the telescopic connector 30.

[0028] Please see Figures 1 to 3 As a specific embodiment of the concrete vibrator provided by this utility model, the telescopic connector 30 also includes an outer telescopic tube 34 fitted outside the inner telescopic tube 31, and there is an installation gap 35 between the outer telescopic tube 34 and the inner telescopic tube 31. The two ends of the outer telescopic tube 34 are respectively fixedly connected to two connecting plates 33, and the push-pull mechanism 32 is installed within the installation gap 35. The outer telescopic tube 34 is fitted outside the inner telescopic tube 31, and an installation gap 35 is reserved between the two. The two ends of the outer telescopic tube 34 are fixed to the two connecting plates 33 of the telescopic connector 30 to form a closed annular space. The push-pull mechanism 32 is built into the installation gap 35, which is neither exposed nor occupies extra space. At the same time, the inner telescopic tube 31 can smoothly extend and retract along the axial direction under the limitation of the outer telescopic tube 34. The outer telescopic tube 34 effectively prevents impurities such as concrete slurry and sand from entering the telescopic component, avoiding contamination or jamming of the push-pull mechanism 32. This solves the problem of traditional exposed push-pull mechanisms 32 being easily affected by the construction environment, extending the service life of the components. Furthermore, it improves telescopic stability. The outer telescopic tube 34 provides radial support to the inner telescopic tube 31, limiting its offset or swaying and ensuring that the inner telescopic tube 31 always extends or shortens along a fixed trajectory, guaranteeing the accuracy of the vibrator 40 depth adjustment. The push-pull mechanism 32 uses a linearly driven mechanism such as an electric push rod, ensuring that the telescopic connector 30 operates accurately, efficiently, and quickly.

[0029] Please see Figure 1 As a specific embodiment of the concrete vibrator provided by this utility model, the inner diameter of the flexible hose 21 is more than twice the outer diameter of the flexible shaft 22; the length of the flexible shaft 22 is greater than the length of the flexible hose 21, and the difference in length is greater than or equal to the expansion and contraction of the telescopic connector 30; by clarifying the size and length relationship between the flexible hose 21 and the flexible shaft 22, a transmission structure adapted for telescopic adjustment is formed. The inner diameter of the flexible hose 21 is designed to be more than twice the outer diameter of the flexible shaft 22, reserving sufficient radial movement space for the flexible shaft 22; and the length of the flexible shaft 22 is greater than the length of the flexible hose 21, and the difference in length between the two is not less than the maximum expansion and contraction of the telescopic connector 30, ensuring that the flexible shaft 22 always has redundant length to meet the expansion and contraction requirements. From a radial perspective, the larger inner diameter difference can prevent the flexible shaft 22 from rubbing against the tube wall when rotating at high speed inside the hose 21, reducing wear and power loss, while also reducing noise caused by friction and extending the service life of the flexible shaft 22 and the hose 21. From an axial perspective, the redundant length design of the flexible shaft 22 can fully adapt to the extension or shortening of the telescopic connector 30. When the inner telescopic tube 31 extends outward, the flexible shaft 22 can extend synchronously to meet the transmission requirements. When the inner telescopic tube 31 retracts, the flexible shaft 22 can be naturally stored inside the hose 21 without stretching, breaking, or folding, ensuring the continuity of power transmission.

[0030] Please see Figure 1 and Figure 4As a specific embodiment of the concrete vibrator provided by this utility model, the other end of the flexible shaft 22 is provided with a rigid square shaft section 24, and the eccentric rotating shaft 41 is provided with an outwardly extending connecting shaft section 42. The connecting shaft section 42 is provided with a square hole 43 that slides and is connected to the rigid square shaft section 24. The sliding length between the rigid square shaft section 24 and the square hole 43 is greater than the extension and contraction of the telescopic connector 30. The other end of the flexible shaft 22 is provided with a rigid square shaft section 24, and the connecting shaft section 42 extending from the eccentric rotating shaft 41 is provided with a square hole 43. The two form a sliding fit and transmission integrated structure of "square shaft-square hole 43". The sliding length of the rigid square shaft section 24 in the square hole 43 is not less than the maximum extension and contraction of the telescopic connector 30. From the perspective of transmission reliability, the non-circular fit structure of the "square shaft-square hole 43" effectively avoids the slippage problem that is prone to occur in traditional circular bushing connections, ensuring that the high-frequency rotational kinetic energy of the flexible shaft 22 can be transmitted to the eccentric rotating shaft 41 without loss, thus ensuring the stability of the vibration frequency of the vibrator 40. From the perspective of adaptability and extensibility, the rigid square shaft section 24 can slide freely within the square hole 43, and the sliding length is sufficient to cover the extension and retraction range of the telescopic connector 30. When the inner telescopic tube 31 drives the vibrator 40 to extend or retract, the rigid square shaft section 24 moves synchronously within the square hole 43, which neither interrupts the transmission nor fails to compensate for the axial displacement difference caused by the extension and retraction. In addition, compared with the flexible shaft 22, the rigid square shaft section 24 has stronger bending resistance and wear resistance.

[0031] Please see Figure 1 , Figure 5 and Figure 6As a specific embodiment of the concrete vibrator provided by this utility model, a rangefinder 44 for monitoring concrete depth is provided at the end of the vibrating rod 40 away from the telescopic connector 30. The drive assembly 10 includes a motor 12 and a controller 50 connected to the motor 12. The rangefinder 44 and the push-pull mechanism 32 are both connected to the controller 50. By integrating the rangefinder 44 and the intelligent controller 50, an integrated depth adaptive system of "monitoring-control-adjustment" is constructed. The rangefinder 44 is set at the end of the vibrating rod 40 away from the telescopic connector 30 to collect concrete pouring depth data in real time. The controller 50 in the drive assembly 10 serves as the core hub and establishes signal connections with the rangefinder 44, the push-pull mechanism 32 and the motor 12 respectively, forming a closed-loop control link of automatic data transmission and automatic command execution. This method automates depth adjustment. The rangefinder 44 can accurately capture the real-time depth of the concrete and synchronize the data to the controller 50. The controller 50 can automatically calculate the required adjustment amount without manual intervention, and drive the push-pull mechanism 32 to extend or shorten the inner telescopic tube 31. This completely solves the problem of lag and error caused by the reliance on manual judgment of depth in traditional equipment. It also improves the vibration accuracy and consistency. By precisely controlling the adjustment range of the push-pull mechanism 32 through the controller 50, it ensures that the vibrator 40 is always at the optimal vibration depth of the concrete, avoiding the problem of air bubbles remaining due to being too shallow or touching the formwork due to being too deep, thus improving the uniformity of concrete density.

[0032] Please see Figure 1 As a specific embodiment of the concrete vibrator provided by this utility model, the concrete vibrator also includes a timer 51 and a frequency converter 52 connected to the controller 50 and used to adjust the working period and vibration frequency of the vibrating rod 40. A dual-dimensional intelligent control system of "time-frequency" is constructed using the timer 51 and the frequency converter 52. The timer 51 can preset parameters such as the single working duration and interval of the vibrating rod 40, while the frequency converter 52 can adjust the vibration frequency of the vibrating rod 40 in real time. Both are linked with the controller 50 to achieve precise setting and automatic execution of vibration operation parameters without continuous manual intervention. In this way, sequential control of the vibration operation is achieved. The timer 51 can preset the optimal working period according to the vibration requirements of different concrete types (such as dry-hard concrete and pumped concrete). Furthermore, it adapts to diverse vibration requirements; the frequency converter 52 can adjust the vibration frequency through the controller 50, ensuring that the vibrating rod 40 outputs optimal vibration energy in different construction scenarios.

[0033] Please see Figure 6As a specific embodiment of the concrete vibrator provided by this utility model, one end of the vibrator rod 40 is provided with an installation groove 45 and a protective net 46 installed at the opening of the groove 45. The rangefinder 44 is installed inside the installation groove 45. By designing a combined structure of the installation groove 45 and the protective net 46 at the end of the vibrator rod 40 to house the rangefinder 44, it is ensured that the rangefinder 44 can normally collect depth data through the protective net 46, while avoiding its direct exposure to the construction environment. This structure enhances the protective performance of the rangefinder 44. The protective net 46 can block impurities such as concrete slurry and sand particles from entering the installation groove 45, preventing the lens of the rangefinder 44 from being contaminated or its surface from being damaged by impacts, ensuring the accuracy of depth monitoring data and the stability of the equipment. Furthermore, it optimizes the structural integration, embedding the rangefinder 44 into the end of the vibrator rod 40 without the need for an additional installation bracket, making the overall structure of the vibrator rod 40 compact and not affecting its flexibility in inserting into the concrete. The protective net 46 further isolates it from external wear. Actual testing shows that the failure rate of the rangefinder 44 is significantly reduced.

[0034] Please see Figure 1 As a specific embodiment of the concrete vibrator provided by this utility model, the drive assembly 10 includes a base 11 and a motor 12 mounted on the base 11. The base 11 is equipped with several wheels 13, forming a movable drive assembly 10. The base 11 provides stable support for the motor 12, reducing equipment displacement caused by vibration transmission and ensuring stable operation of the motor 12. The design of the wheels 13 allows the drive assembly 10 to move flexibly, enabling workers to easily adjust the equipment position without carrying it. This is especially beneficial in large construction sites, reducing manpower consumption and improving equipment transfer efficiency. Simultaneously, the base 11 can raise the height of the motor 12, preventing ground water and concrete slurry from directly contacting the motor 12, thus providing protection and extending the service life of the motor 12.

[0035] The above are merely preferred embodiments of the present utility model and are 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 concrete vibrator, characterized in that, include: Driver components; A drive shaft component having a flexible hose and a flexible shaft installed within the flexible hose; One end of the flexible hose is connected to the drive assembly, and one end of the flexible shaft is connected to the output end of the drive assembly; A telescopic connector has an inner telescopic tube and a push-pull mechanism installed on the outside of the inner telescopic tube; one end of the telescopic connector is fixedly connected to the other end of the flexible tube, and the push-pull mechanism is used to drive the inner telescopic tube to extend or shorten; the other end of the flexible shaft passes through the inner telescopic tube. The vibrating rod is connected to the other end of the telescopic connector, and the other end of the flexible shaft is connected to the eccentric rotating shaft inside the vibrating rod. The flexible shaft has a telescopic range that is adapted to the elongation or shortening of the telescopic connector.

2. The concrete vibrator as described in claim 1, characterized in that, Both ends of the telescopic connector are provided with connecting plates. The inner telescopic tube and the push-pull mechanism are installed between the two connecting plates and connected to the two connecting plates. One end of the hose is connected to the side of one connecting plate away from the inner telescopic tube, and one end of the vibrator is connected to the side of the other connecting plate away from the inner telescopic tube.

3. The concrete vibrator as described in claim 2, characterized in that, Both the hose and the vibrating rod are provided with mounting plates that are opposite to and fixedly connected to the two connecting plates.

4. The concrete vibrator as described in claim 2, characterized in that, The telescopic connector also includes an outer telescopic tube fitted outside the inner telescopic tube, and there is an installation gap between the outer telescopic tube and the inner telescopic tube. The two ends of the outer telescopic tube are respectively fixedly connected to the two connecting plates, and the push-pull mechanism is installed within the installation gap.

5. The concrete vibrator as described in claim 1, characterized in that, The inner diameter of the flexible hose is more than twice the outer diameter of the flexible shaft; the length of the flexible shaft is greater than the length of the flexible hose, and the difference in length is greater than or equal to the telescopic extension amount of the telescopic connector.

6. The concrete vibrator as described in claim 1, characterized in that, The other end of the flexible shaft is provided with a rigid square shaft section, and the eccentric rotating shaft is provided with an outwardly extending connecting shaft section. The connecting shaft section is provided with a square hole that slides and is connected to the rigid square shaft section in a transmission manner, and the sliding length between the rigid square shaft section and the square hole is greater than the extension and retraction amount of the telescopic connector.

7. The concrete vibrator as described in claim 1, characterized in that, The vibrating rod is equipped with a distance measuring instrument for monitoring the concrete depth at one end away from the telescopic connector. The drive assembly includes a motor and a controller connected to the motor. The distance measuring instrument and the push-pull mechanism are both connected to the controller.

8. The concrete vibrator as described in claim 7, characterized in that, The concrete vibrator also includes a timer and a frequency converter connected to the controller for adjusting the working period and vibration frequency of the vibrator.

9. The concrete vibrator as described in claim 7, characterized in that, One end of the vibrator is provided with an installation groove and a protective net installed at the opening of the installation groove, and the rangefinder is installed in the installation groove.

10. The concrete vibrator as described in claim 1, characterized in that, The drive assembly includes a base and a motor mounted on the base, and the base is provided with a plurality of wheels.

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