Vibration table for concrete test block
By designing a separate vibrating plate and fixed plate structure on the concrete vibrating table, combined with an eccentric wheel and a limiting groove, the problems of inconvenient table cleaning and safety hazards are solved, and the cleaning efficiency and stability of the equipment are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-14
AI Technical Summary
Existing concrete vibration tables present challenges in cleaning the table surface and pose safety hazards, and long-term use may affect equipment performance.
A vibration table for concrete test blocks was designed, which adopts a structure in which the vibrating plate and the fixed plate are separated. The vibration plate can be easily loaded, unloaded and limited by an eccentric wheel and a clamping mechanism to avoid concrete adsorption. The concrete slippage is prevented by limiting grooves and limiting frames. Support seats and bases are set to improve the vibration force transmission efficiency and equipment stability.
This makes cleaning the vibration table easier, reduces damage to the vibration motor and springs, and improves the stability and safety of the equipment.
Smart Images
Figure CN224116364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of concrete testing equipment, specifically to a vibration table for concrete test blocks. Background Technology
[0002] Concrete test blocks are used in the construction industry to assess the construction quality of concrete structures. The compressive strength test of concrete test blocks is one of the key indicators for measuring the quality of concrete construction in an engineering project. During the testing of concrete test blocks, a vibrating table is used to compact the concrete. Therefore, concrete vibrating tables are common equipment on construction sites and in testing centers. The structural design of a concrete vibrating table mainly includes a frame, springs, a table surface, and a vibration motor. The vibration motor generates periodic centrifugal force, which drives the table surface to vibrate vertically or horizontally. By placing the concrete test block on the vibrating table, the block vibrates, causing the aggregate within the concrete test block to rearrange, controlling the upward movement and expulsion of air bubbles, and promoting the flow of the slurry inside the concrete test block to fill the voids, resulting in a uniform and dense structure that facilitates accurate testing. Therefore, the vibrating table is an indispensable testing device in the concrete specimen molding process, and its performance directly affects the quality of the molded concrete specimen.
[0003] During the compaction of concrete test blocks on a vibrating table, concrete material often adheres to the table surface, which not only soils the surface but may also adversely affect subsequent use. To ensure the table surface remains clean for subsequent compaction of concrete test blocks, it needs to be cleaned after compaction. Since the vibrating motor is mounted on the table, and the table is attached to springs, removing the table is both time-consuming and laborious. Therefore, it is common practice to simply pour water directly onto the table for cleaning. However, this simple cleaning method also carries potential risks. If water splashes onto the vibrating motor or its cable, it may cause a short circuit, posing a safety hazard. Furthermore, if water washes concrete residue onto the springs or other critical components of the vibrating table, this residue may adhere, affecting the lifespan of these components and potentially degrading the overall performance of the vibrating table. Given these potential problems, there is room for improvement in the practical application of the vibration table for concrete test blocks, in order to facilitate the cleaning of the table surface and the loading and unloading of the table surface, thereby better meeting the needs of concrete testing and ensuring the long-term stable operation of the vibration table. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this utility model provides a vibration table that facilitates cleaning of the table surface and makes it easy to load and unload concrete test blocks, thereby overcoming the deficiencies in existing technologies.
[0005] The technical solution adopted by this utility model is as follows: a vibration table for concrete test blocks, including a frame, a fixed plate set above the frame, a vibration motor installed on the fixed plate, and a spring set between the fixed plate and the frame. A fixed frame is set on the fixed plate, and a vibration plate is movably fitted inside the fixed frame. The bottom surface of the vibration plate is in contact with the fixed plate. Fixed grooves are respectively set on both sides of the fixed frame, and clamping mechanisms are respectively set on both sides of the fixed frame. The clamping mechanism includes an eccentric wheel set in the fixed groove, a first bolt set on the eccentric wheel, a fixed rod movably fitted inside the eccentric wheel, and two fixed seats set on the fixed rod. The two fixed seats are respectively installed on both sides of the outer wall of the fixed frame. A threaded hole is opened on the short side of the eccentric wheel, and the first bolt is threaded into the threaded hole. The bottom end of the first bolt is in contact with the fixed rod, and the eccentric wheel is clamped on the fixed rod by the first bolt.
[0006] Preferably, the cross-sectional shape of the vibrating plate matches the cross-sectional shape of the inner cavity of the fixed frame. A limiting groove is formed on the top surface of the vibrating plate, and a limiting frame is interference-fitted into the limiting groove. The limiting frame is formed by four limiting plates surrounding a U-shape. Clamping plates are respectively provided at both ends of the limiting plate. The fixing rod is located at the top of the limiting plate. The clamping plate and the limiting plate are integral structures. A through hole is formed on the clamping plate, and a second bolt is fitted into the through hole. A first nut is threaded onto the second bolt. The clamping plate contacts the nut of the second bolt or the first nut. Two adjacent limiting plates are clamped and fixed to the second bolt by the first nut.
[0007] Preferably, a support seat is provided between the spring and the frame, the bottom of the spring is mounted on the support seat, the support seat is mounted on the top surface of the frame, a base is provided between the spring and the fixed plate, the top of the spring is mounted on the base, and the base is mounted on the bottom surface of the fixed plate; an L-shaped baffle is provided on the top of the base, the baffle and the base are an integral structure, and the two sides of the baffle contact the sides of the fixed plate respectively.
[0008] Preferably, the eccentric wheel has a sleeve hole on its short side, the diameter of the sleeve hole is not less than the diameter of the threaded hole, the sleeve hole is connected to the inner cavity of the eccentric wheel through the threaded hole, and the nut of the first bolt is located inside the sleeve hole.
[0009] Preferably, the fixed frame has slots at both ends, the slots are located on the side of the fixed seat away from the eccentric wheel, and a handle is provided in the slot. The handle adopts an n-shaped rod structure, and the bottom end of the handle is installed on the side wall of the vibration plate.
[0010] Preferably, the two fixed seats are respectively provided with fixed holes, the fixed rod is movably fitted into the fixed holes, and two second nuts are threaded on the fixed rod. One side of the two second nuts is in contact with the side of the two bases away from the eccentric wheel, and the fixed rod is clamped on the two bases by the two second nuts.
[0011] Preferably, the frame has several support legs evenly distributed below it. Each support leg has a screw at its top and its bottom end installed in the middle of the top surface of the support leg. The frame has a through hole at its bottom, and the screw is threaded into the through hole.
[0012] The advantages of this invention are as follows: First, by placing the vibrating plate on a fixed plate, the concrete is placed on the vibrating plate, thus avoiding contact between the concrete and the fixed plate and preventing the concrete from adhering to the fixed plate. The vibrating motor is also mounted on the fixed plate, ensuring that the vibrating plate and the vibrating motor do not contact each other. Therefore, when disassembling the vibrating plate, it is not necessary to remove the vibrating motor, reducing the difficulty of loading and unloading the vibrating plate. Furthermore, this invention uses a fixed frame to limit the position of the vibrating plate and an eccentric wheel to press the vibrating plate against the fixed plate, preventing it from slipping off and facilitating the vibrating motor to drive the vibrating plate for vibration. This facilitates the compaction of the concrete test blocks placed on the vibrating plate. By rotating the eccentric wheel around the fixed rod, the long side of the eccentric wheel moves to the outside of the vibrating plate, releasing the constraint of the eccentric wheel on the vibrating plate, allowing it to be removed for cleaning. This prevents cleaning fluid from dripping onto the vibrating motor, springs, and other components, thus completing the cleaning operation of the platform.
[0013] Secondly, this invention utilizes a limiting groove on the top surface of the vibrating plate and an interference fit within the limiting groove to restrict the concrete test block placed on the vibrating plate, preventing the concrete from slipping off. Furthermore, the invention incorporates a support base and a fixed base to mount the two sides of the spring onto the frame and the fixed plate respectively. This allows the spring to support both the fixed plate and the vibrating plate, efficiently transmitting the periodic excitation force generated by the vibrating motor to the vibrating plate, thus forming a directional vibration trajectory. This facilitates the vibration of the concrete test block, buffers the impact load on the frame, prevents metal fatigue fracture caused by frame connections, and improves the stability of the frame during use.
[0014] Furthermore, this invention protects the nut of the first bolt by using a sleeve hole on the eccentric wheel, thus preventing collision with the nut. Handles on both sides of the vibrating plate facilitate its removal from the fixing frame. Additionally, the second nut clamps the fixing rod onto the base, allowing for easy assembly and disassembly of the fixing rod and eccentric wheel, facilitating their replacement. Attached Figure Description
[0015] Figure 1 This is a first perspective view of the present invention.
[0016] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.
[0017] Figure 3 This is a second perspective view of the present invention.
[0018] Figure 4 This is an assembly structure diagram of the support base, base, fixing plate and vibration plate in this utility model.
[0019] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.
[0020] Figure 6 This is an exploded view of the assembly of the frame and the frame in this utility model.
[0021] Figure 7 This is an exploded view of the assembly of the vibration plate and the limiting frame in this utility model. Detailed Implementation
[0022] like Figures 1 to 7As shown, a vibration table for concrete test blocks includes a frame 1, a fixed plate 2 mounted above the frame 1, a vibration motor 3 mounted on the fixed plate 2, and a spring 4 between the fixed plate 2 and the frame 1. A fixed frame 5 is mounted on the fixed plate 2, and a vibration plate 6 is movably fitted inside the fixed frame 5 to prevent concrete from contacting the fixed plate 2 and adhering to it. The bottom surface of the vibration plate 6 contacts the fixed plate 2, thus the fixed frame 5 supports and limits the vibration plate 6 to prevent it from slipping off the fixed plate 2. Fixing grooves 7 are provided on both sides of the fixed frame 5, and clamping mechanisms are provided on both sides of the fixed frame 5. The clamping mechanism includes an eccentric wheel 8 provided in the fixing groove 7, a first bolt 9 provided on the eccentric wheel 8, a fixing rod 10 movably fitted in the eccentric wheel 8, and two fixing seats 11 provided on the fixing rod 10. The two fixing seats 11 are respectively installed on both sides of the outer wall of the fixed frame 5. A threaded hole 12 is provided on the short side of the eccentric wheel 8. The first bolt 9 is threadedly fitted into the threaded hole 12. The bottom end of the first bolt 9 contacts the fixing rod 10. The eccentric wheel 8 is clamped on the fixing rod 10 by the first bolt 9. By pressing the long side of the eccentric wheel 8 against the top surface of the vibrating plate 6, and using the first bolt 9 to press and fix the long side of the eccentric wheel 8 onto the top surface of the vibrating plate 6, the vibrating plate 6 is clamped and fixed to the fixing plate 2, thereby facilitating the vibration of the vibrating plate 6 together with the vibration motor 3. In addition, when it is necessary to remove the vibrating plate 6, the first bolt 9 is loosened and the eccentric wheel 8 is pushed to rotate, so that the long side of the eccentric wheel 8 moves to the outside of the vibrating plate 6, thereby releasing the constraint of the eccentric wheel 8 on the vibrating plate 6, thus facilitating the removal of the vibrating plate 6.
[0023] In this embodiment, the cross-sectional shape of the vibrating plate 6 matches the cross-sectional shape of the inner cavity of the fixing frame 5. A limiting groove 13 is provided on the top surface of the vibrating plate 6, and a limiting frame 14 is interference-fitted into the limiting groove 13. The limiting frame 14 is used to limit the concrete test block placed on the vibrating plate 6 to prevent the concrete from slipping off the vibrating plate 6. The limiting frame 14 is formed by four limiting plates in a U-shape. Clamping plates 15 are respectively provided at both ends of the limiting plate. The fixing rod 10 is located at the top of the limiting plate. The clamping plate 15 and the limiting plate are integral structures. A through hole 16 is provided on the clamping plate 15, and a second bolt 17 is fitted into the through hole 16. A first nut 18 is threaded onto the second bolt 17. The clamping plate 15 contacts the nut of the second bolt 17 or the first nut 18. Two adjacent limiting plates are clamped and fixed to the second bolt 17 by the first nut 18, so as to facilitate the assembly of the four limiting plates into the limiting frame 14, thereby facilitating the assembly or disassembly of the limiting frame 14.
[0024] Specifically, a support base 19 is provided between the spring 4 and the frame 1. The bottom of the spring 4 is mounted on the support base 19, and the support base 19 is mounted on the top surface of the frame 1. A base 20 is provided between the spring 4 and the fixed plate 2. The top of the spring 4 is mounted on the base 20, and the base 20 is mounted on the bottom surface of the fixed plate 2, thereby mounting both sides of the spring 4 onto the frame 1 and the fixed plate 2 respectively. An L-shaped baffle 21 is provided on the top of the base 20. The baffle 21 and the base 20 are an integral structure. Both sides of the baffle 21 contact the sides of the fixed plate 2 respectively, thereby assembling the fixed plate 2 onto the frame 1 so that the spring 4 can support the fixed plate 2 and the vibrating plate 6. This allows the periodic excitation force generated by the vibration motor 3 to be efficiently transmitted to the vibrating plate 6 to form a directional vibration trajectory, thereby facilitating the vibration of the concrete test block and buffering the impact load on the frame 1. This prevents metal fatigue fracture caused by the connection of the frame 1 and improves the stability of the frame 1 in use.
[0025] Please refer to it again. Figure 3 and 5 The eccentric wheel 8 has a sleeve hole 22 on its short side. The diameter of the sleeve hole 22 is not less than the diameter of the threaded hole 12. The sleeve hole 22 is connected to the inner cavity of the eccentric wheel 8 through the threaded hole 12. The nut of the first bolt 9 is located inside the sleeve hole 22, thereby protecting the nut of the first bolt 9 and preventing it from colliding with the nut of the first bolt 9.
[0026] In this embodiment, the fixed frame 5 has slots 23 at both ends. The slots 23 are located on the side of the fixed seat 11 away from the eccentric wheel 8. A handle 24 is provided in the slots 23. The handle 24 adopts an n-shaped rod structure. The bottom end of the handle 24 is installed on the side wall of the vibration plate 6, so that the vibration plate 6 can be easily removed from the fixed frame 5 by pulling the handle 24.
[0027] Specifically, the two fixed seats 11 are respectively provided with fixed holes, and the fixed rod 10 is movably fitted into the fixed holes. Two second nuts 25 are threaded on the fixed rod 10. One side of the two second nuts 25 contacts the side of the two bases 20 away from the eccentric wheel 8. The fixed rod 10 is clamped on the two bases 20 by the two second nuts 25, which facilitates the installation and removal of the fixed rod 10 and the eccentric wheel 8, and makes it easy to replace the fixed rod 10 and the eccentric wheel 8.
[0028] Please refer to Figure 1 and 2The frame 1 is provided with several support legs 26, which are evenly arranged below the frame 1. The top of the support leg 26 is provided with a screw 27, and the bottom end of the screw 27 is installed in the middle of the top surface of the support leg 26. The bottom of the frame 1 is provided with a through hole, and the screw 27 is threaded into the through hole. By adjusting the screw length of the screw 27, the height of the support leg 26 can be adjusted, so as to facilitate the use of several support legs 26 to support the frame 1.
[0029] The instructions for using this product are as follows: Figures 1 to 7 As shown, firstly, by holding the handle 24, slowly place the vibrating plate 6 into the fixed frame 5, ensuring that the vibrating plate 6 can be placed on the fixed plate 2. Then, rotate the eccentric wheel 8 so that its long side presses against the top surface of the vibrating plate 6. Tighten the first bolt 9 to clamp and fix the eccentric wheel 8 to the fixed rod 10. After completing the above steps, start the vibration motor 3 to drive the fixed plate 2 and the vibrating plate 6 to vibrate. Observe whether the vibration of the fixed plate 2 and the vibrating plate 6 is stable, and also pay attention to any abnormal noise or shaking. If no abnormalities are found during the inspection, the vibration motor 3 can be safely turned off. Next, place the prepared concrete test block on the vibrating plate 6 and start the vibration motor 3 again to drive the concrete test block placed on the vibrating plate 6 to vibrate. After the air bubbles in the concrete test block are expelled and the surface of the concrete test block becomes flat, turn off the vibration motor 3 and remove the concrete test block. Finally, in preparation for the next use, loosen the first bolt 9 and push the eccentric wheel 8 to rotate, so that the long side of the eccentric wheel 8 moves to the outside of the vibrating plate 6. Then, by holding the handle 24, remove the vibrating plate 6 from the fixed frame 5. This facilitates a thorough cleaning of the vibrating plate 6, ensuring the cleanliness of the equipment and smooth operation for the next use.
[0030] In this embodiment, by placing the vibrating plate 6 on the fixed plate 2, the concrete is placed on the vibrating plate 6, avoiding contact between the concrete and the fixed plate 2, thus preventing the concrete from adhering to the fixed plate 2. The vibrating motor 3 is installed on the fixed plate 2, so that the vibrating plate 6 and the vibrating motor 3 do not come into contact. Therefore, when disassembling the vibrating plate 6, it is not necessary to remove the vibrating motor 3, which reduces the difficulty of loading and unloading the vibrating plate 6. Moreover, this utility model limits the vibrating plate 6 by the fixed frame 5 and presses the vibrating plate 6 against the fixed plate 2 by the eccentric wheel 8, preventing the vibrating plate 6 from slipping off the fixed plate 2 and facilitating the vibration of the vibrating motor 3 to drive the vibrating plate 6 to vibrate, so as to facilitate the compaction of the concrete test block placed on the vibrating plate 6. By rotating the eccentric wheel 8 around the fixed rod 10, the long side of the eccentric wheel 8 moves to the outside of the vibrating plate 6, thereby releasing the constraint of the eccentric wheel 8 on the vibrating plate 6, so that the vibrating plate 6 can be removed for cleaning, and the cleaning water is prevented from falling onto the vibrating motor 3, spring 4 and other components, so as to complete the cleaning operation of the table.
[0031] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.
Claims
1. A vibration table for concrete test blocks, comprising a frame (1), a fixed plate (2) disposed above the frame (1), a vibration motor (3) mounted on the fixed plate (2), and a spring (4) disposed between the fixed plate (2) and the frame (1), characterized in that: The fixed plate (2) is provided with a fixed frame (5), and a vibrating plate (6) is movably fitted inside the fixed frame (5). The bottom surface of the vibrating plate (6) is in contact with the fixed plate (2). Fixed grooves (7) are provided on both sides of the fixed frame (5), and clamping mechanisms are provided on both sides of the fixed frame (5). The clamping mechanism includes an eccentric wheel (8) set in the fixing groove (7), a first bolt (9) set on the eccentric wheel (8), a fixing rod (10) movably fitted inside the eccentric wheel (8), and two fixing seats (11) set on the fixing rod (10). The two fixing seats (11) are respectively installed on both sides of the outer wall of the fixing frame (5). The short side of the eccentric wheel (8) is provided with a threaded hole (12). The first bolt (9) is threadedly fitted into the threaded hole (12). The bottom end of the first bolt (9) is in contact with the fixing rod (10). The eccentric wheel (8) is clamped on the fixing rod (10) by the first bolt (9).
2. The vibration table for concrete test blocks according to claim 1, characterized in that: The cross-sectional shape of the vibrating plate (6) matches the cross-sectional shape of the inner cavity of the fixed frame (5). A limiting groove (13) is opened on the top surface of the vibrating plate (6). A limiting frame (14) is interference-fitted in the limiting groove (13). The limiting frame (14) is surrounded by four limiting plates in a U-shape. Clamping plates (15) are respectively provided at both ends of the limiting plate. The fixing rod (10) is located at the top of the limiting plate. The clamping plate (15) and the limiting plate are an integral structure. A through hole (16) is opened on the clamping plate (15). A second bolt (17) is fitted in the through hole (16). A first nut (18) is threaded on the second bolt (17). The clamping plate (15) contacts the nut of the second bolt (17) or the first nut (18). Two adjacent limiting plates are clamped and fixed on the second bolt (17) by the first nut (18).
3. The vibration table for concrete test blocks according to claim 1, characterized in that: A support base (19) is provided between the spring (4) and the frame (1). The bottom of the spring (4) is installed on the support base (19), and the support base (19) is installed on the top surface of the frame (1). A base (20) is provided between the spring (4) and the fixing plate (2). The top of the spring (4) is installed on the base (20), and the base (20) is installed on the bottom surface of the fixing plate (2). An L-shaped baffle (21) is provided on the top of the base (20). The baffle (21) and the base (20) are an integral structure. The two sides of the baffle (21) are in contact with the sides of the fixing plate (2).
4. The vibration table for concrete test blocks according to claim 1, characterized in that: The eccentric wheel (8) has a sleeve hole (22) on its short side. The diameter of the sleeve hole (22) is not less than the diameter of the threaded hole (12). The sleeve hole (22) is connected to the inner cavity of the eccentric wheel (8) through the threaded hole (12). The nut of the first bolt (9) is located inside the sleeve hole (22).
5. The vibration table for concrete test blocks according to claim 1, characterized in that: The fixed frame (5) has a sleeve groove (23) at both ends. The sleeve groove (23) is located on the side of the fixed seat (11) away from the eccentric wheel (8). A handle (24) is provided in the sleeve groove (23). The handle (24) adopts an n-shaped rod structure. The bottom end of the handle (24) is installed on the side wall of the vibration plate (6).
6. The vibration table for concrete test blocks according to claim 1, characterized in that: The two fixed seats (11) are respectively provided with fixed holes. The fixed rod (10) is movably fitted in the fixed holes. Two second nuts (25) are threaded on the fixed rod (10). One side of the two second nuts (25) is in contact with the side of the two bases (20) away from the eccentric wheel (8). The fixed rod (10) is clamped on the two bases (20) by the two second nuts (25).
7. The vibration table for concrete test blocks according to claim 1, characterized in that: The frame (1) is provided with several legs (26) below it. The legs (26) are evenly arranged below the frame (1). The top of the legs (26) is provided with screws (27). The bottom end of the screws (27) is installed in the middle of the top surface of the legs (26). The bottom of the frame (1) is provided with a through hole. The screws (27) are threaded onto the through hole.