Insertion-type vibrating device for thin-shell concrete structures

By setting fixed blocks and rotating holes in thin-shell concrete structures and using vibration units and flexible shafts to transmit vibration, the problem of traditional vibrating devices being unable to vibrate thin-thick, irregularly shaped concrete structures with internal steel mesh is solved, achieving efficient vibration and low-energy-consumption vibration effects.

CN117090398BActive Publication Date: 2026-05-19CHINA FIRST METALLURGICAL GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA FIRST METALLURGICAL GROUP
Filing Date
2023-09-25
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Traditional vibratory compaction devices cannot effectively compact thin, irregularly shaped concrete structures with internal steel mesh, especially decorative concrete with 45-degree or 60-degree sloping surfaces.

Method used

An interleaved vibration device for thin-shell concrete structures was designed, including a drive unit, a vibration unit, a vibrating rod, and a fixing block. By setting fixing blocks and rotating holes on the formwork on both sides of the concrete, the vibrating rod is pre-embedded in the concrete. The vibration unit transmits the vibration, and the flexible shaft reduces vibration loss, thereby achieving effective vibration.

Benefits of technology

It enables effective vibration of thin-shell concrete structures, reduces energy loss, prevents concrete overflow and formwork damage, and improves operational convenience.

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Abstract

The present application relates to concrete vibration technology field, disclose a thin shell concrete structure through type vibrating device. A plurality of pairs of fixed blocks are arranged on the two side forms of the concrete, the middle part of the vibrating rod is embedded into the concrete through the rotating holes on the two side fixed blocks, then the vibration unit is used to generate vibration, the vibration is transmitted to the vibrating rod embedded in the concrete, so as to vibrate the concrete; after the vibrating operation is completed, the vibrating rod protruding out of the surface of the concrete is cut and subjected to rust-proof treatment. A flexible shaft is arranged in the transmission device, and the flexible shaft is used to reduce the vibration transmitted by the vibration unit to the driving unit. Based on the above measures, a plurality of vibrating rods penetrating through the two side forms of the concrete are arranged in the concrete at a horizontal interval, the vibrating of the thin shell concrete structure is realized, and the problem of difficult vibration of the thin shell concrete structure is solved; in addition, the flexible shaft is arranged in the transmission system, the vibration is reduced to the driving unit, which is conducive to the operation of the workers, and the energy loss is also reduced.
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Description

Technical Field

[0001] This invention relates to the field of concrete vibration technology, specifically to an interleaved vibration device for thin-shell concrete structures. Background Technology

[0002] Existing building exterior decorative moldings extensively utilize irregularly shaped concrete structures, typically featuring 45- or 60-degree sloping surfaces with internal cavities. The concrete design thickness is only 80mm, and it incorporates reinforcing mesh. Traditional vibratory compaction devices are unsuitable for such deep, thin, and reinforced concrete decorative molding structures. Therefore, a thin-shell concrete structure with interlocking vibratory compaction is urgently needed to address these issues. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, a perforated vibratory compaction device for thin-shell concrete structures is provided, solving the problem of difficult vibration compaction of thin-shell concrete structures.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A thin-shell concrete structure interleaved vibratory compaction device is characterized by comprising a drive unit, a vibration unit, a vibrating rod, and fixing blocks. The fixing blocks are arranged in pairs, with a single set of fixing blocks symmetrically arranged on both sides of the thin-shell concrete formwork, and several sets of fixing blocks spaced apart on both sides of the thin-shell concrete formwork. Rotation holes are provided on the fixing blocks. The vibrating rod is arranged horizontally, with its middle part placed inside the concrete and both ends passing through the two rotation holes of the single set of fixing blocks. One end of the vibration unit is connected to the drive unit, and the other end of the vibration unit is connected to the vibrating rod. A flexible shaft is provided inside the vibration unit, and the drive unit is connected to the vibration unit through the flexible shaft.

[0006] According to the above technical solution, the fixing block is composed of a ring structure and a cylindrical structure. The ring structure is provided with several threaded holes. The ring structure is fixed to the outer wall of the cylindrical structure. The concrete template is provided with through holes that match the size of the outer wall of the cylindrical structure. The ring structure is fixed to the concrete template by screws. The rotating holes are arranged through the cylindrical structure along its axis.

[0007] According to the above technical solution, the rotating hole is divided into an inner section and an outer section. The outer section has a trumpet-shaped structure, and the cross-sectional size of the outer section gradually decreases from the outside to the inside. A guide strip is provided on the inner wall of the outer section. The inner section has a cylindrical structure, and the size of the inner section is larger than the outer diameter of the vibrator. Two annular elastic washers are provided on the inner section, and a gap is left between the elastic washers. The two elastic washers, the inner wall of the inner section, and the outer wall of the vibrator form a hollow cavity.

[0008] According to the above technical solution, the number and spacing of vibrating rods placed in the concrete are determined based on the concrete strength grade and other factors; the vibrating rods are made of on-site steel bar ends or water-stop screws with water-stopping effect.

[0009] According to the above technical solution, the drive unit includes a first housing, a motor disposed inside the first housing, and a connecting shaft connected to the output shaft of the motor; a hand-held operating handle is provided on the first housing, a bearing is provided at the end of the first housing, and the connecting shaft is placed on the bearing; the other end of the connecting shaft is connected to the vibration unit.

[0010] According to the above technical solution, the vibration unit also includes a second housing, two intermediate bearings disposed in the second housing, an eccentric shaft assembly disposed in the intermediate bearings, and a clamping assembly connected to the second housing. The two ends of the flexible shaft are respectively connected to the drive unit and the eccentric shaft assembly, and the clamping assembly is connected to different vibrating rods according to the vibration requirements.

[0011] According to the above technical solution, the eccentric shaft assembly includes an intermediate shaft connected to the flexible shaft and an eccentric component fixed on the intermediate shaft. The intermediate shaft is placed on an intermediate bearing and connected to the flexible shaft.

[0012] According to the above technical solution, a bellows is also provided between the housing and the drive unit, and the bellows is sleeved on the outside of the flexible shaft.

[0013] According to the above technical solution, the clamping assembly includes a U-shaped structure fixed on the housing and bolt fasteners on the protruding sections on both sides of the U-shaped structure. A clamping plate is provided on the end of the bolt fastener located on the inner side of the U-shaped structure. Threaded holes are provided on the protruding sections on both sides of the U-shaped structure. By adjusting the distance between the clamping plates on both sides, the end of the vibrator can be clamped.

[0014] The present invention has the following beneficial effects:

[0015] 1. Several pairs of fixing blocks are installed on both sides of the concrete formwork. The vibrator is pre-embedded in the concrete through rotating holes on these fixing blocks. During concrete pouring, the vibrating unit and vibrator are fixed in place. The vibrating unit then generates vibration, which is transmitted to the vibrator embedded in the concrete, thus compacting the concrete. After compaction, the vibrator protruding from the concrete surface is cut and treated with rust prevention. Additionally, a flexible shaft is installed in the transmission device to reduce the vibration transmitted from the vibrating unit to the drive unit. Based on these measures, several vibrators are horizontally spaced within the concrete, penetrating both sides of the formwork, enabling the compaction of thin-shell concrete structures and solving the problem of difficult compaction of thin-shell concrete structures. Furthermore, the flexible shaft in the transmission system reduces vibration transmission to the drive unit, which is beneficial for worker operation and also reduces energy loss.

[0016] 2. The outer section of the rotating hole adopts a trumpet-shaped structure with a cross-sectional dimension gradually decreasing from the inside to the outside. This effectively reduces the contact between the fixing block and the vibrator and prevents concrete from overflowing from the fixing block during vibration. Guide strips are installed inside the outer section to reduce friction between the vibrator and the fixing block, facilitating the installation of the vibrator. Elastic washers are installed on the inner section to facilitate the fixing of the vibrator; simultaneously, the gap between the two elastic washers forms a hollow cavity, further reducing contact with the vibrator and thus minimizing vibration transmission to the concrete formwork, which could damage the formwork structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment provided by the present invention;

[0018] Figure 2 This is an external schematic diagram of the driving unit and the oscillation unit provided in an embodiment of the present invention;

[0019] Figure 3 This is an internal schematic diagram of the driving unit and the oscillation unit provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing block provided in an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional schematic diagram of an embodiment provided by the present invention;

[0022] Figure 6 This is a schematic diagram of another bolt fastener provided in an embodiment of the present invention;

[0023] In the diagram, 1. Drive unit; 1-1. First outer shell; 1-2. Motor; 1-3. Connecting shaft; 1-4. Operating handle; 1-5. Bearing; 2. Vibration unit; 2-1. Flexible shaft; 2-2. Second outer shell; 2-3. Intermediate bearing; 2-41. Intermediate shaft; 2-42. Eccentric component; 2-51. U-shaped structure; 2-511. Clamping plate; 2-52. Bolt fastener; 2-521. Threaded hole; 3. Vibrator; 4. Fixing block; 4-1. Rotating hole; 4-2. Threaded hole; 4-3. Guide strip; 4-4. Elastic washer; 4-5. Hollow chamber; 5. Corrugated pipe; 6. Thin-shell concrete; 7. Formwork. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Reference Figures 1-6 As shown, the present invention provides an interleaved vibratory compaction device for thin-shell concrete structures.

[0026] Example 1

[0027] It includes a drive unit 1, a vibration unit 2, a vibrating rod 3, and a fixing block 4. The fixing blocks are arranged in pairs, with a single set of fixing blocks symmetrically arranged on both sides of the thin-shell concrete 6 formwork 7. Several sets of fixing blocks are arranged at intervals on both sides of the thin-shell concrete formwork. The fixing blocks are provided with rotating holes 4-1. The vibrating rod is arranged horizontally, with the middle of the vibrating rod placed in the concrete and both ends passing through the two rotating holes of the single set of fixing blocks. One end of the vibration unit is connected to the drive unit, and the other end of the vibration unit is connected to the vibrating rod. A flexible shaft 2-1 is provided in the vibration unit, and the drive unit is connected to the vibration unit through the flexible shaft.

[0028] In this embodiment, several pairs of fixing blocks are set on the formwork on both sides of the concrete. The vibrator is pre-embedded in the concrete through rotating holes on the fixing blocks. When pouring concrete, the vibration unit and vibrator are fixed, and then the vibration unit generates vibration, which is transmitted to the vibrator embedded in the concrete, thus performing the concrete vibration operation. After the vibration operation is completed, the vibrator protruding from the concrete surface is cut and rust-proofed. Additionally, a flexible shaft is installed in the transmission device to reduce the vibration transmitted from the vibration unit to the drive unit. Based on these measures, several vibrators are horizontally spaced within the concrete, penetrating the formwork on both sides, enabling vibration of thin-shell concrete structures and solving the problem of difficult vibration of thin-shell concrete structures. Furthermore, the flexible shaft in the transmission system reduces vibration transmission to the drive unit, which is beneficial for worker operation and also reduces energy loss.

[0029] Example 2

[0030] The structure and principle of Example 2 are similar to those of Example 1, except that a preferred structural form of the fixing block is given.

[0031] Specifically, the fixing block consists of a ring-shaped structure and a cylindrical structure. The ring-shaped structure has several threaded holes 4-2. The ring-shaped structure is fixed to the outer wall of the cylindrical structure. The concrete formwork has through holes matching the dimensions of the outer wall of the cylindrical structure. The ring-shaped structure is fixed to the concrete formwork with screws. Rotation holes are arranged along the axis of the cylindrical structure. In this embodiment, one side of the cylindrical structure of the fixing block is placed inside the concrete, and screws are driven into the concrete formwork through the threaded holes of the ring-shaped structure. The fixing block is made of a corrosion-resistant and non-deformable material, facilitating reuse.

[0032] In embodiment 2, preferably, the rotating hole is divided into an inner section and an outer section. The outer section has a trumpet-shaped structure, and the cross-sectional size of the outer section gradually decreases from the outside to the inside. A guide strip 4-3 is provided on the inner wall of the outer section. The inner section has a cylindrical structure, and the size of the inner section is larger than the outer diameter of the vibrator. Two annular elastic washers 4-4 are provided on the inner section, and a gap is left between the elastic washers. The two elastic washers, the inner wall of the inner section, and the outer wall of the vibrator form a hollow cavity 4-5.

[0033] In this embodiment, the outer section adopts a trumpet-shaped structure with a cross-sectional size that gradually decreases from the inside to the outside. This effectively reduces the contact between the fixing block and the vibrator and prevents concrete from overflowing from the fixing block during vibration. Guide strips are installed inside the outer section to reduce friction between the vibrator and the fixing block, facilitating the installation of the vibrator. Elastic washers are installed in the inner section to facilitate the fixing of the vibrator; simultaneously, the gap between the two elastic washers forms a hollow cavity, further reducing contact with the vibrator and thus minimizing vibration transmission to the concrete formwork, which could damage the formwork structure.

[0034] In the above embodiments 1 and 2, the number and spacing of the vibrating rods placed in the concrete are determined according to the concrete strength grade and other factors; the vibrating rods are made of on-site steel bar ends or water-stop screws with water-stopping effect.

[0035] Example 3

[0036] The structure and principle of Example 3 are similar to those of Example 1, except that a preferred structural form of the driving unit and the vibration unit is given.

[0037] Specifically, the drive unit includes a first housing 1-1, a motor 1-2 housed inside the first housing, and a connecting shaft 1-3 connected to the output shaft of the motor; a hand-held operating handle 1-4 is provided on the first housing, and a bearing 1-5 is provided at the end of the first housing, with the connecting shaft placed on the bearing; the other end of the connecting shaft is connected to the vibration unit. The drive unit contains a motor and a gear control switch, and is connected to external wiring.

[0038] The vibration unit also includes a second housing 2-2, two intermediate bearings 2-3 disposed inside the second housing, an eccentric shaft assembly disposed inside the intermediate bearings, and a clamping assembly connected to the second housing. The two ends of the flexible shaft are respectively connected to the drive unit and the eccentric shaft assembly, and the clamping assembly is connected to different vibrating rods according to the vibration requirements.

[0039] In this embodiment, the drive unit is connected to the eccentric shaft assembly via a flexible shaft, driving the eccentric shaft assembly to rotate within the second housing. Since the eccentric shaft assembly is housed within the second housing via an intermediate bearing, the vibration generated by the eccentric shaft assembly during its rotation is transmitted through the second housing and the clamping assembly to the vibrator, thereby achieving the vibration operation of the concrete.

[0040] Based on embodiment 3, the eccentric shaft assembly further includes an intermediate shaft 2-41 connected to the flexible shaft and an eccentric member 2-42 fixed on the intermediate shaft. The intermediate shaft is placed on an intermediate bearing and connected to the flexible shaft.

[0041] Based on embodiment 3, a bellows 5 is further provided between the housing and the drive unit, and the bellows is sleeved on the outside of the flexible shaft; the design of the bellows can reduce vibration transmission and also allow the vibration unit to have a certain amount of room to move, which facilitates the subsequent fixed installation of the vibrating rod.

[0042] Based on Embodiment 3, the clamping assembly further includes a U-shaped structure 2-51 fixedly mounted on the housing, and bolt fasteners 2-52 provided on the protruding sections on both sides of the U-shaped structure. A clamping plate 2-521 is provided on the end of the bolt fastener located inside the U-shaped structure; threaded holes 2-511 are provided on the protruding sections on both sides of the U-shaped structure. By adjusting the distance between the clamping plates on both sides, the end of the vibrator is clamped. Figure 3 and 6 As shown, the bolt fastener exhibits two structural forms. In the embodiment shown, the clamping plate is provided with anti-slip pads.

[0043] The above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent changes made in accordance with the claims of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A perforated vibratory compaction device for thin-shell concrete structures, characterized in that: It includes a drive unit, a vibration unit, a vibrating rod, and fixing blocks. The fixing blocks are arranged in pairs, with a single set of fixing blocks symmetrically arranged on both sides of the thin-shell concrete formwork, and several sets of fixing blocks spaced apart on both sides of the thin-shell concrete formwork. The fixing blocks are provided with rotation holes. The vibrating rod is arranged horizontally, with the middle of the vibrating rod placed inside the concrete, and both ends passing through the two rotation holes of a single set of fixing blocks. One end of the vibration unit is connected to the drive unit, and the other end of the vibration unit is connected to the vibrating rod. A flexible shaft is provided inside the vibration unit, and the drive unit is connected to the vibration unit through the flexible shaft. The rotating hole is divided into an inner section and an outer section. The outer section has a trumpet-shaped structure, and the cross-sectional dimensions of the outer section gradually decrease from the outside to the inside. A guide strip is provided on the inner wall of the outer section. The inner section has a cylindrical structure, and the dimensions of the inner section are larger than the outer diameter of the vibrator. Two annular elastic washers are provided on the inner section, with a gap between the elastic washers. The two elastic washers, the inner wall of the inner section, and the outer wall of the vibrator form a hollow cavity.

2. The thin-shell concrete structure interleaved vibrating device according to claim 1, characterized in that: The fixing block consists of a ring structure and a cylindrical structure. The ring structure has several threaded holes. The ring structure is fixed to the outer wall of the cylindrical structure. The concrete formwork has through holes that match the size of the outer wall of the cylindrical structure. The ring structure is fixed to the concrete formwork with screws. The rotating holes are arranged along the axis of the cylindrical structure.

3. The thin-shell concrete structure interleaved vibratory compaction device according to claim 1, characterized in that: The number and spacing of vibrators placed in the concrete are determined according to the concrete strength grade and other factors; vibrators can be made from on-site steel bar ends or water-stop screws with a water-stopping effect.

4. The thin-shell concrete structure interleaved vibratory compaction device according to claim 1, characterized in that: The drive unit includes a first housing, a motor disposed inside the first housing, and a connecting shaft connected to the output shaft of the motor; a hand-held operating handle is provided on the first housing, a bearing is provided at the end of the first housing, and the connecting shaft is placed on the bearing; the other end of the connecting shaft is connected to the vibration unit.

5. The thin-shell concrete structure interleaved vibratory compaction device according to claim 1 or 4, characterized in that: The vibration unit also includes a second housing, two intermediate bearings disposed within the second housing, an eccentric shaft assembly disposed within the intermediate bearings, and a clamping assembly connected to the second housing. The two ends of the flexible shaft are respectively connected to the drive unit and the eccentric shaft assembly, and the clamping assembly is connected to different vibrating rods according to the vibration requirements.

6. The thin-shell concrete structure interleaved vibratory compaction device according to claim 5, characterized in that: The eccentric shaft assembly includes an intermediate shaft connected to a flexible shaft and an eccentric component fixed on the intermediate shaft. The intermediate shaft is placed on an intermediate bearing and connected to the flexible shaft.

7. The thin-shell concrete structure interleaved vibratory compaction device according to claim 5, characterized in that: A bellows is also provided between the housing and the drive unit, and the bellows is sleeved on the outside of the flexible shaft.

8. The thin-shell concrete structure interleaved vibratory compaction device according to claim 5, characterized in that: The clamping assembly includes a U-shaped structure fixed on the housing and bolt fasteners on the protruding sections on both sides of the U-shaped structure. A clamping plate is provided on the end of the bolt fastener located on the inner side of the U-shaped structure. Threaded holes are provided on the protruding sections on both sides of the U-shaped structure. By adjusting the distance between the clamping plates on both sides, the end of the vibrator can be clamped.