A concrete vibrating device for construction engineering
Patent Information
- Application Number
- CN202522583917.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-12-05
AI Technical Summary
[0003]现有的混凝土振捣装置在使用时存在以下问题:振捣棒直径固定较难调节,既无法灵活适配宽窄各异的施工空间,也难以匹配不同粒径的混凝土骨料,导致振捣效果受限
[0023]振捣棒采用螺纹接头,便于更换不同规格的振捣棒,可以适配不同的施工空间,匹配不同粒径的混凝土骨料,提高振捣装置的通用性,在工地作业时,根据实际工况,匹配不同直径的振捣棒,既不会因直径过小导致振捣范围窄、密实度不足,也不会因直径过大造成振动能量浪费或混凝土离析。
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Figure CN224885187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibration device technology, and in particular to a concrete vibration device for building construction. Background Technology
[0002] The core purpose of using concrete vibration equipment in building construction is to ensure the compaction and formation of concrete, thereby guaranteeing structural quality. After concrete is poured, it is easy for air to be trapped inside, creating voids. Vibration equipment uses vibration energy to expel air and eliminate air bubbles, allowing the concrete to fully fill the gaps in the formwork and adhere to the reinforcing steel, thus avoiding defects such as honeycomb and pitting. At the same time, it can improve the density of concrete, enhance its strength, durability, and impermeability, and prevent cracks and leaks caused by loose structures later on, or insufficient strength to withstand the design load. Ultimately, it ensures the safety and stability of the building structure and meets the engineering design and usage requirements.
[0003] Existing concrete vibrating devices have the following problems when in use: the diameter of the vibrator rod is fixed and difficult to adjust, making it difficult to flexibly adapt to construction spaces of varying widths and to match concrete aggregates of different particle sizes, thus limiting the vibration effect. Utility Model Content
[0004] The purpose of this utility model is to provide a concrete vibration device for building construction. The lower vibration section of the vibrator can be replaced to adjust the diameter of the lower vibration section, which can be adapted to construction spaces of different widths and matched with concrete aggregates of different particle sizes, thereby improving the versatility of the vibration device.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a concrete vibration device for building construction, comprising a placement mechanism and a drive mechanism disposed within the placement mechanism, further comprising a transmission mechanism and a vibration mechanism, wherein the drive mechanism, transmission mechanism, and vibration mechanism are connected in sequence, and the drive mechanism drives the vibration mechanism to perform vibration movement through the transmission mechanism; the vibration mechanism includes a connecting component fixedly disposed at the lower part of the vibration mechanism, and a vibration component is fixedly disposed at the lower part of the connecting component, and a protective component is provided at the connection between the connecting component and the vibration component. By adopting the above technical solution, the connecting component of the vibration mechanism is used to connect the transmission mechanism and the vibration mechanism to ensure stable power transmission; the protective component protects the connection, preventing cement slurry and debris from intruding during construction, which could lead to connection failure or component wear; the size of the lower end of the vibration component is adjustable to match concrete aggregates of different particle sizes.
[0006] A further feature of this invention is that the connecting component includes a connector, the lower section of which is a hollow cylindrical structure with a first external thread on the outer side, and the interior of the hollow cylindrical structure is provided with a positioning flange, and the inner circumferential surface of the positioning flange is machined with a first internal thread.
[0007] By adopting the above technical solution, the hollow cylindrical structure of the lower section of the connector provides installation space for the vibratory assembly. The outer first external thread can engage with the protective component to achieve a stable assembly of the protective component. The inner positioning flange not only plays an axial positioning role for the vibratory assembly, but also engages with the vibratory assembly thread through the inner first internal thread to achieve a firm connection between the vibratory assembly and the connector.
[0008] A further feature of this invention is that the protective component includes a cover, the inner wall of the upper section of the cover is provided with a second internal thread along the circumference, and the lower end of the cover is fixedly provided with an annular bottom wall.
[0009] By adopting the above technical solution, the second internal thread of the upper section of the cover can engage with the first external thread of the connector, so as to achieve a firm assembly of the protective component and the connecting component; the annular bottom wall at the lower end can form an axial shielding protection at the connection between the connecting component and the vibrating component, preventing cement slurry, sand and gravel and other debris from entering the threaded connection part during construction.
[0010] A further feature of this invention is that an annular sealing waterproof gasket is fixedly provided at the inner ring of the annular bottom wall, and the end face of the annular sealing waterproof gasket is flush with the end face of the inner ring of the annular bottom wall.
[0011] By adopting the above technical solution, the annular sealing waterproof gasket at the inner ring of the annular bottom wall is flush with the end face of the inner ring of the annular bottom wall, which not only ensures the flatness of the sealing structure, but also can be tightly fitted with the outer wall of the vibrating component to form a reliable seal. After sealing, it can effectively prevent cement slurry, water and other impurities from entering the threaded connection between the connecting component and the vibrating component during construction, and avoid thread corrosion.
[0012] A further feature of this invention is that the vibration assembly includes a vibration rod, which consists of a top threaded section, a middle transition section, and a lower vibration section from top to bottom, and the top threaded section, the middle transition section, and the lower vibration section are fixedly connected in sequence.
[0013] By adopting the above technical solution, the three-section structure not only ensures the ease of assembly of the vibrator, structural stability and vibration transmission efficiency, but also facilitates the replacement of the lower vibrator section of different specifications according to construction needs, thereby improving the versatility of the device.
[0014] A further feature of this invention is that a second external thread is provided on the outer side of the top threaded section.
[0015] By adopting the above technical solution, the second external thread on the outer side of the top threaded section can engage with the first internal thread of the internal positioning flange of the connector, forming a firm and detachable threaded connection.
[0016] A further feature of this invention is that the first external thread of the lower section of the connector engages with the second internal thread of the upper section of the cover, and the first internal thread of the positioning flange engages with the second external thread of the top threaded section of the vibrating rod.
[0017] By adopting the above technical solution, the threaded engagement between the lower section of the connector and the upper section of the cover allows the protective component to be tightly fitted onto the outside of the connection. The threaded engagement between the positioning flange and the top of the vibrator enables the connection between the vibrating component and the connecting component. The double threaded engagement structure is not easy to loosen under high-frequency vibration, ensuring the vibration resistance and reliability of the overall connection and preventing components from falling off during vibration.
[0018] A further feature of this invention is that the diameter of the intermediate transition section is smaller than that of the lower vibrating section but larger than that of the top threaded section, forming a cylindrical structure.
[0019] By adopting the above technical solution, the intermediate transition section adopts a cylindrical structure with a diameter between the top threaded section and the lower vibrating section. This not only enables a smooth connection between the upper and lower sections and avoids stress concentration caused by structural abrupt changes, but also ensures that the overall force of the vibrating rod is balanced, ensuring that the vibration energy is transferred from the top threaded section through the transition section to the lower vibrating section, thus ensuring the compaction effect.
[0020] The present invention is further configured such that: the diameter of the lower vibrating section is 25-75 mm, the lower end of the lower vibrating section is arc-shaped, and the outer wall of the lower vibrating section is provided with anti-slip and wear-resistant texture.
[0021] By adopting the above technical solution, the 25~75 mm diameter is suitable for various construction conditions. This diameter range is a commonly used specification for vibrators in concrete construction, which can match the needs of different scenarios. Vibrators of different diameters can be matched according to the actual working conditions.
[0022] The beneficial effects of this utility model are:
[0023] The vibrator uses a threaded joint, which makes it easy to replace vibrators of different specifications. It can be adapted to different construction spaces and match concrete aggregates of different particle sizes, improving the versatility of the vibrating device. When working on the construction site, vibrators of different diameters can be matched according to the actual working conditions. This will prevent the vibration range from being too narrow and the compaction from being insufficient due to the diameter being too small, and will also prevent the vibration energy from being wasted or the concrete from segregating due to the diameter being too large. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.
[0025] Figure 1 This is a schematic diagram of the overall structure of a concrete vibration device for building construction according to the present invention.
[0026] Figure 2 This is a front structural diagram of a concrete vibration device for building construction according to the present invention.
[0027] Figure 3 This is a schematic diagram of the overall structure of a concrete vibration device for building construction according to the present invention.
[0028] Figure 4 This is a partial structural diagram of point A of a concrete vibrating device for building construction according to this utility model;
[0029] Figure 5 This is a schematic diagram of the overall structure of a concrete vibration device for building construction according to the present invention.
[0030] Figure 6 This is a partial structural diagram of point B of a concrete vibrating device for building construction according to this utility model.
[0031] Figure 7 This is a front structural diagram of the lower vibration section of a concrete vibration device for building construction with different diameters, according to the present invention.
[0032] In the figure, 1 is the drive mechanism; 101 is the electric motor; 2 is the placement mechanism; 201 is the placement box; 202 is the handle; 3 is the transmission mechanism; 4 is the vibration mechanism; 41 is the connecting assembly; 411 is the connector; 412 is the first external thread; 413 is the positioning flange; 414 is the first internal thread; 42 is the protective assembly; 421 is the cover; 422 is the second internal thread; 423 is the annular bottom wall; 424 is the annular sealing waterproof gasket; 43 is the vibration assembly; 431 is the vibrator; 432 is the top threaded section; 433 is the intermediate transition section; 434 is the lower vibration section; and 435 is the second external thread. Detailed Implementation
[0033] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0034] like Figure 1 As shown, this utility model embodiment specifically provides a concrete vibrating device for building construction, including a placement mechanism 2 and a drive mechanism 1 disposed within the placement mechanism 2, as well as a transmission mechanism 3 and a vibration mechanism 4. The drive mechanism 1, transmission mechanism 3, and vibration mechanism 4 are connected in sequence, and the drive mechanism 1 drives the vibration mechanism 4 to perform vibration movement through the transmission mechanism 3; as shown Figure 2As shown, the vibration mechanism 4 includes a connecting component 41 fixedly installed at the lower part of the vibration mechanism 4, a vibration component 43 fixedly installed at the lower part of the connecting component 41, a protective component 42 covering the connection between the connecting component 41 and the vibration component 43, and the size of the lower end of the vibration component 43 can be adjusted to match concrete aggregates of different particle sizes.
[0035] It is worth noting that the main improvement direction of this technical solution is the connection method between the transmission mechanism 3 and the vibration mechanism 4. During construction, the vibration mechanism 4 is driven to vibrate the concrete. Apart from the specific connection structure between the traditional mechanism 3 and the vibration mechanism 4, the vibration driving principle of the driving mechanism 1, the placement mechanism 2 and the transmission mechanism 3 are common knowledge known to those skilled in the art, and will not be described in detail here.
[0036] Specifically, the working principle of a concrete vibrator is mainly to achieve concrete vibration through the coordinated work of various mechanisms, such as... Figure 1 As shown, the placement mechanism 2 includes a placement box 201 for placing the drive mechanism 1. The top of the placement box 201 is welded with a handle 202 for easy carrying. The core of the drive mechanism 1 is an electric motor 101, which provides the power required for vibration, converts electrical energy into mechanical energy, and drives the operation of subsequent components. The transmission mechanism 3 transmits the power to the vibration mechanism 4. The transmission mechanism 3 includes a flexible shaft and an outer sheath. The flexible shaft is responsible for transmitting the rotational motion of the power end to the vibration mechanism 4. The outer sheath protects the flexible shaft. The vibration mechanism 4 compacts the concrete through mechanical vibration.
[0037] In addition, the connecting component 41 of the vibration mechanism 4 is used to connect the transmission mechanism 3 and the vibration mechanism 4 to ensure stable power transmission; the protective component 42 forms a protective layer at the connection to prevent cement slurry and debris from entering during construction, which could lead to connection failure or component wear; the size of the lower end of the vibrating component 43 is adjustable to match concrete aggregates of different particle sizes.
[0038] Furthermore, such as Figure 3 As shown, the connecting assembly 41 includes a connector 411. The lower section of the connector 411 is a hollow cylindrical structure with a first external thread 412 on the outer side. The hollow cylindrical structure has a positioning flange 413 inside, and a first internal thread 414 is machined on the inner circumferential surface of the positioning flange 413.
[0039] Specifically, the hollow cylindrical structure of the lower section of the connector 411 provides installation space for the vibratory assembly 43. The outer first external thread 412 can engage with the protective component 42 to achieve a stable assembly of the protective component 42. The inner positioning flange 413 not only provides axial positioning for the vibratory assembly 43, but also engages with the vibratory assembly 43 through the inner first internal thread 414, achieving a firm connection between the vibratory assembly 43 and the connector 411. This ensures that vibration energy is transmitted from the connector 411 to the vibratory assembly 43. The threaded connection also facilitates the disassembly and replacement of the vibratory assembly 43, adapting to the needs of different construction scenarios.
[0040] Furthermore, such as Figure 4 As shown, the protective component 42 includes a cover 421. The inner wall of the upper section of the cover 421 is provided with a second internal thread 422 along the circumferential direction, and the lower end of the cover 421 is fixedly provided with an annular bottom wall 423.
[0041] Specifically, the second internal thread 422 of the upper section of the cover 421 can engage with the first external thread 412 of the connector 411 to achieve a firm assembly of the protective component 42 and the connecting component 41; the annular bottom wall 423 at the lower end can form an axial shielding protection at the connection between the connecting component 41 and the vibrating component 43, preventing cement slurry, sand and gravel and other debris from entering the threaded connection part during construction, avoiding connection failure or component wear. At the same time, the annular structure adapts to the assembly form of the device to ensure the comprehensiveness of protection and structural stability.
[0042] Furthermore, such as Figure 4 As shown, an annular sealing waterproof gasket 424 is fixed at the inner ring of the annular bottom wall 423, and the end face of the annular sealing waterproof gasket 424 is flush with the end face of the inner ring of the annular bottom wall 423.
[0043] Specifically, the annular sealing waterproof gasket 424 at the inner ring of the annular bottom wall 423 is flush with the end face of the inner ring of the annular bottom wall 423, which not only ensures the flatness of the sealing structure, but also fits tightly with the outer wall of the vibrating component 43 to form a reliable seal. After sealing, it can effectively prevent cement slurry, water and other impurities from entering the threaded connection between the connecting component 41 and the vibrating component 43 during construction, and avoid thread corrosion.
[0044] It is worth noting that the annular sealing waterproof gasket 424 is preferably made of nitrile rubber. Nitrile rubber has excellent elastic recovery, which can ensure that it can tightly fit the outer wall of the vibrator 431 and the annular bottom wall 423 under high-frequency vibration and assembly compression, forming a durable seal and preventing cement slurry and water from seeping in. At the same time, it must have good wear resistance and tear resistance to resist the friction and scratching of sand and gravel particles in concrete and prevent damage and cracking after long-term use.
[0045] Furthermore, such as Figure 5 As shown, the vibrating assembly 43 includes a vibrating rod 431, which consists of a top threaded section 432, a middle transition section 433, and a lower vibrating section 434 from top to bottom, and the top threaded section 432, the middle transition section 433, and the lower vibrating section 434 are fixedly connected in sequence.
[0046] Specifically, firstly, the top threaded section 432 of the vibrating rod 431 can be firmly connected to the connecting assembly 41 through thread engagement, ensuring the transmission of vibration energy, while facilitating the disassembly and replacement of the vibrating rod 431;
[0047] Secondly, the intermediate transition section 433 is designed with a gradually changing diameter, that is, the diameter of the intermediate transition section 433 is smaller than that of the lower vibrating section 434 and larger than that of the top threaded section 432. This not only achieves a smooth connection between the upper and lower sections, but also enhances the overall structural strength of the vibrating rod 431, disperses vibration stress, and avoids breakage at the connection.
[0048] In addition, the lower vibration section 434, as the core working section, can have its structure and materials optimized to improve the vibration effect.
[0049] In summary, the three-section structure not only ensures the ease of assembly, structural stability, and vibration transmission efficiency of the vibrator 431, but also facilitates the replacement of the lower vibrator section 434 of different specifications according to construction needs, thereby improving the versatility of the device.
[0050] Furthermore, such as Figure 6 As shown, a second external thread 435 is provided on the outer side of the top threaded section 432.
[0051] Specifically, the second external thread 435 on the outer side of the top threaded section 432 can engage with the first internal thread 414 of the internal positioning flange 413 of the connector 411 to form a firm and detachable threaded connection. On the one hand, this ensures that the vibration energy of the vibration mechanism 4 is transmitted to the vibrator 431, avoiding problems such as loose connection and vibration attenuation during vibration. On the other hand, the threaded connection method is easy to install and disassemble, making it convenient to replace vibrator 431 of different specifications according to the needs of concrete construction, adapting to concrete vibration conditions with different slumps and aggregate sizes. At the same time, the self-locking property of the thread engagement can improve the connection stability, resist the high-frequency vibration impact during vibration operation, and ensure construction safety and vibration effect.
[0052] Furthermore, the first external thread 412 of the lower section of the connector 411 engages with the second internal thread 422 of the upper section of the cover 421, and the first internal thread 414 of the positioning flange 413 engages with the second external thread 435 of the top threaded section 432 of the vibrator 431.
[0053] Specifically, firstly, the lower section of the connector 411 engages with the upper section of the cover 421, so that the protective component 42 is tightly covered on the outside of the connection. The thread engagement between the positioning flange 413 and the top of the vibrator 431 realizes the connection between the vibrator component 43 and the connecting component 41. The double thread engagement structure is not easy to loosen under high-frequency vibration, ensuring the vibration resistance and reliability of the overall connection and preventing the components from falling off during the vibration process.
[0054] Secondly, the threaded engagement surface of the positioning flange 413 and the vibrating rod 431 is closely fitted, which can transmit the vibration energy of the vibration mechanism 4 to the vibrating rod 431, ensuring that the lower vibration section 434 receives sufficient vibration force and improving the compaction of concrete.
[0055] Furthermore, the threaded connection method facilitates the quick replacement of vibrating rods 431 of different specifications during construction to adapt to different concrete conditions, or the disassembly of protective components 42 for maintenance, thereby reducing construction and maintenance costs.
[0056] Meanwhile, the external thread engagement allows the cover 421 and the connector 411 to form a tight assembly. Combined with the axial positioning of the internal thread connection, the sealing and waterproof gasket of the protective component 42 fits against the outer wall of the vibrator 431, effectively preventing cement slurry and moisture from invading the threaded connection and extending the service life of the device.
[0057] Furthermore, the diameter of the intermediate transition section 433 is smaller than that of the lower vibrating section 434 and larger than that of the top threaded section 432, forming a cylindrical structure.
[0058] Specifically, the intermediate transition section 433 adopts a cylindrical structure with a diameter between the top threaded section 432 and the lower vibrating section 434. On the one hand, the gradual diameter design achieves a smooth connection between the upper and lower sections, avoiding stress concentration caused by structural abrupt changes and reducing the risk of breakage at the connection. On the other hand, the cylindrical structure ensures that the vibrating rod 431 is subjected to balanced force, ensuring that the vibration energy is transferred from the top threaded section 432 through the transition section to the lower vibrating section 434, thus ensuring the compaction effect.
[0059] Furthermore, such as Figure 7 As shown, the diameter of the lower vibrating section 434 is 25~75 mm, and the lower end of the lower vibrating section 434 ends in an arc shape.
[0060] Specifically, the 25-75 mm diameter is suitable for diverse construction conditions. This diameter range is the commonly used specification for vibrator 431 in concrete construction, which can meet the needs of different scenarios. For example, the small diameter of about 25 mm can be used for vibrating small components such as fine aggregate concrete, beams and columns, or areas with dense reinforcement, avoiding the inability to insert into gaps due to excessive diameter; the medium diameter of about 50 mm is suitable for vibrating ordinary concrete components such as floor slabs and walls; the larger diameter of 70-75 mm is suitable for large-volume concrete construction, with a larger vibration coverage radius, which can improve construction efficiency.
[0061] When working on the construction site, different diameter vibrators 431 are matched according to the actual working conditions. This will prevent the vibration range from being too narrow and the compaction from being insufficient due to the diameter being too small, and will also prevent the vibration energy from being wasted or the concrete from segregating due to the diameter being too large.
[0062] In addition, the rounded, edgeless design reduces resistance when inserting into concrete, making it easier to penetrate concrete with different slumps.
[0063] The above describes the basic principles, main features, and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, which will not be described in detail here.
[0064] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.
[0065] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 vibrating device for construction engineering, comprising a placement mechanism (2) and a driving mechanism (1) disposed within the placement mechanism (2), characterized in that: It also includes a transmission mechanism (3) and a vibration mechanism (4). The drive mechanism (1), transmission mechanism (3) and vibration mechanism (4) are connected in sequence. The drive mechanism (1) drives the vibration mechanism (4) to move through the transmission mechanism (3). The vibration mechanism (4) includes a connecting component (41) fixedly installed at the lower part of the vibration mechanism (4). A vibrating component (43) is fixedly installed at the lower part of the connecting component (41). A protective component (42) is provided at the connection between the connecting component (41) and the vibrating component (43). The size of the lower end of the vibrating component (43) can be adjusted to match concrete aggregates of different particle sizes.
2. The concrete vibrating device for building construction according to claim 1, characterized in that: The connecting assembly (41) includes a connector (411), the lower section of which is a hollow cylindrical structure with a first external thread (412) on the outside. The hollow cylindrical structure has a positioning flange (413) inside, and a first internal thread (414) is machined on the inner circumferential surface of the positioning flange (413).
3. A concrete vibrating device for building construction according to claim 2, characterized in that: The protective component (42) includes a cover (421), the inner wall of the upper section of the cover (421) is provided with a second internal thread (422) along the circumferential direction, and the lower end of the cover (421) is fixedly provided with an annular bottom wall (423).
4. A concrete vibrating device for building construction according to claim 3, characterized in that: An annular sealing waterproof gasket (424) is fixedly provided at the inner ring of the annular bottom wall (423), and the end face of the annular sealing waterproof gasket (424) is flush with the end face of the inner ring of the annular bottom wall (423).
5. A concrete vibrating device for building construction according to claim 4, characterized in that: The vibrating assembly (43) includes a vibrating rod (431), which consists of a top threaded section (432), a middle transition section (433), and a lower vibrating section (434) from top to bottom, and the top threaded section (432), the middle transition section (433), and the lower vibrating section (434) are fixedly connected in sequence.
6. A concrete vibrating device for building construction according to claim 5, characterized in that: The top threaded section (432) has a second external thread (435) on its outer side.
7. A concrete vibrating device for building construction according to claim 6, characterized in that: The first external thread (412) of the lower section of the connector (411) engages with the second internal thread (422) of the upper section of the cover (421), and the first internal thread (414) of the positioning flange (413) engages with the second external thread (435) of the top thread section (432) of the vibrating rod (431).
8. A concrete vibrating device for building construction according to claim 7, characterized in that: The diameter of the intermediate transition section (433) is smaller than that of the lower vibrating section (434) and larger than that of the top threaded section (432), and it has a cylindrical structure.
9. A concrete vibrating device for building construction according to claim 8, characterized in that: The diameter of the lower vibrating section (434) is 25-75 mm.
10. A concrete vibrating device for building construction according to claim 9, characterized in that: The lower end of the lower vibrating section (434) is arc-shaped.