A concrete test block vibrating device

Abstract

This application relates to the field of concrete vibration technology, specifically disclosing a concrete test block vibration device, which includes a base, an elastic element fixed to the base, a vibration table fixed to the elastic element, and a vibration motor fixed below the vibration table. The vibration table is for placing the mold. Protective plates are fixed to three sides of the vibration table. Two of the opposing protective plates have sliding holes, and the other protective plate is movably fitted to the side of the mold. Several movable plates adapted to the sliding holes are slidably arranged on the protective plate, and the movable plates are movably fitted to the side of the mold. Several scrapers are slidably arranged on the protective plate, and the scrapers are movably fitted to the top wall of the mold. The protective plate is provided with a locking mechanism for locking the movable plates and a limiting mechanism for restricting the movement of the scrapers. This application has the effect of fixing molds of different sizes.

Description

Technical Field

[0001] This application relates to the field of concrete vibration technology, and in particular to a concrete test block vibration device. Background Technology

[0002] Concrete test blocks, as a key carrier for evaluating the quality of concrete structures, directly reflect the mechanical properties of concrete in the engineering entity through their compressive strength. Standard curing test blocks are primarily 150mm cubes, while axial compressive strength test blocks are rectangular prisms measuring 150mm wide, 150mm high, and 300mm long. Some impermeability test blocks are cylindrical with a diameter of 175mm and a height of 150mm. During the concrete test block fabrication process, concrete is first placed in a mold, then vibrated using a vibrating device to remove air from the concrete within the mold, preventing quality problems such as honeycomb and pitting. After 28 days of standard curing, the strength data of these standard-sized test blocks become the core basis for project acceptance, directly affecting structural safety assessment and construction quality control. The density of the test blocks has a significant impact on the strength test results; insufficient vibration can lead to strength deviations. Therefore, the vibration process during the test block forming stage is crucial.

[0003] A related technology, Chinese patent CN222345869U, proposes a concrete vibrating device, including a trolley and a placement groove on one side of the trolley's surface, and a mold set inside the placement groove. A positioning frame is bolted to one side of the trolley's surface, and an electric actuator is fixedly connected to the inner wall of the positioning frame. The output shaft of the electric actuator is fixedly connected to a mounting platform. A linkage mechanism is provided on one side of the mounting platform, and a fixed shell is provided on one side of the linkage mechanism. This invention, through the cooperation of the linkage mechanism, the fixed shell, the vibrating plate, the positioning rod, and the telescopic spring, can cause the vibrator to vibrate, which can vent the concrete in multiple molds, eliminating the need for workers to vent the concrete in each mold individually. This reduces the time required for overall test block testing and the workload of workers. With the cooperation of the leveling mechanism and the mold, concrete exceeding the top of the mold can be leveled without the need for workers to use auxiliary tools.

[0004] Regarding the aforementioned related technologies: In the above-mentioned utility model, multiple placement slots are set on the trolley, and the concrete placed in the mold is vibrated by a vibrator. Since the size of the placement slots is fixed, it cannot be adjusted according to the size of the mold. Moreover, if the placement slots are not cleaned properly, the mold is prone to falling off when the vibrator vibrates the concrete. Utility Model Content

[0005] To address the issue that vibratory compaction devices cannot be adjusted to accommodate molds of different sizes, this application provides a concrete test block vibratory compaction device.

[0006] The concrete test block vibration device provided in this application adopts the following technical solution:

[0007] A concrete test block vibration device includes a base, an elastic element fixed to the base, a vibration table fixed to the elastic element, and a vibration motor fixed below the vibration table. The vibration table is for placing a mold. The device is characterized in that: protective plates are fixed to three sides of the vibration table; two of the oppositely arranged protective plates have sliding holes; the third protective plate is movably fitted to the side of the mold; several movable plates adapted to the sliding holes are slidably arranged on the protective plate, and the movable plates are movably fitted to the side of the mold; several scrapers are slidably arranged on the protective plate, and the scrapers are movably fitted to the top wall of the mold; a locking mechanism for locking the movable plates is provided on the protective plate; and a limiting mechanism for restricting the movement of the scrapers is provided on the protective plate.

[0008] By adopting the above technical solution, when placing the mold on the vibrating table, the molds are placed side by side on the vibrating table. The moving plate is pushed so that it slides along the width direction of the vibrating table under the limiting action of the sliding hole. The moving plate abuts the mold against the side wall of the other protective plate. The locking mechanism fixes the first moving plate on the protective plate to prevent the moving plate from moving left or right, thereby limiting the mold in the horizontal direction. Then, the remaining molds are placed side by side on the vibrating table, and the remaining moving plates are moved in sequence. This can fix multiple rows of molds in the horizontal direction.

[0009] Next, the technicians added concrete to the unfilled mold and then moved the scraper to remove the excess concrete from the mold surface. After scraping, the scraper was brought into contact with the top wall of the mold to limit the height of the mold. The limiting mechanism fixed the scraper and the moving plate, ensuring that the positions of the scraper and the moving plate remained constant and preventing the mold from vibrating up and down.

[0010] Start the vibration motor under the vibrating table to make the vibrating table vibrate under the action of the elastic element. The base remains stable with respect to the ground, thereby vibrating the concrete in the mold. The movable plate can fix the molds of different sizes. The scraper prevents the molds from vibrating up and down during vibration, improving the vibration effect of the concrete in the mold.

[0011] Optionally, the locking mechanism includes a first lead screw threaded to the protective plate, a conical block fixed to one end of the first lead screw near the movable plate, a retaining ring coaxially fixed to the first lead screw, an insert rod elastically slidably disposed on the movable plate, and a trapezoidal block fixed to the end of the insert rod. The movable plate has a circular hole adapted to the conical block, and the movable plate has an insertion hole adapted to the insert rod along the height direction. The trapezoidal block is located between the retaining ring and the conical block, and the trapezoidal block is movably abutted against the side wall of the conical block.

[0012] By adopting the above technical solution, when fixing the mold, the distance between the moving plate and the protective plate can be adjusted by adjusting the position of the first lead screw, which facilitates adjustment according to molds of different standards and enables stable clamping and fixing of molds of different sizes.

[0013] When the mold needs to be fixed, the conical block on the first lead screw moves into the round hole. The conical block moves and abuts against the inclined surface of the trapezoidal block, causing the insert rod to move upward along the insertion hole. When the conical block moves to the position that passes the trapezoidal block, the trapezoidal block is located between the retaining ring and the conical block. Under the action of the elastic force, the insert rod moves downward and the trapezoidal block locks the first lead screw, making it difficult for the conical block to detach from the round hole. This fixes the moving plate to the protective plate and prevents the moving plate from shifting left and right during vibration.

[0014] After vibration is complete, the insert rod can be pulled to separate the cone block from the insert rod, thus separating the moving plate from the mold.

[0015] Optionally, a second lead screw is threaded to one end of the movable plate away from the circular hole. The end of the second lead screw is also fixed to the conical block and the retaining ring. The second lead screw on the movable plate is directly opposite to the circular hole on the next movable plate, and the spaced second lead screws are offset along the direction parallel to the ground.

[0016] By adopting the above technical solution, when fixing multiple sets of molds, the sliding plate is slid so that the round hole on the sliding plate is aligned with the second lead screw. The insert rod is inserted between the retaining ring and the conical block on the second lead screw to fix the two adjacent sliding plates, thus preventing the sliding plates from moving left and right during vibration. When collecting the sliding plates, the position of the second lead screw on the sliding plate is adjusted. The second lead screws on different sliding plates are misaligned with each other, which can gather the sliding plates to one side.

[0017] Optionally, the limiting mechanism includes a fixed post disposed on the movable plate, a rotating rod rotatably disposed at the end of the fixed post, a limiting hole opened at the end of the scraper and adapted to engage with the rotating rod, a crossbar elastically slidably disposed on the scraper, and a fixing hole opened on the rotating rod and adapted to insert with the crossbar. The fixed posts on each movable plate are staggered along the height direction.

[0018] By adopting the above technical solution, when the scraper is moved above the mold, the fixed column on the moving plate can determine the distance between the moving plate and the scraper. Then, the rotating rod is rotated and moved into the limiting hole, which facilitates the limiting of the scraper's position in the middle of the mold and prevents the mold from warping.

[0019] Meanwhile, since there is a risk that the rotating rod may detach from the limiting hole during the vibration process, a fixing hole is provided on the rotating rod to further fix it. When the rotating rod is in the limiting hole, the crossbar is inserted into the fixing hole on the rotating rod to fix the scraper and the moving plate. After the vibration is completed, the moving plate is slid, and the fixing columns fixed on the moving plate are staggered along the height direction to facilitate the storage of the moving plate.

[0020] Optionally, the protective plate has two sets of collection holes, and the protective plate is provided with collection rods that are plugged into and adapted to the collection holes. The two sets of collection rods correspond one-to-one with the moving plate and the scraper, and the two sets of collection rods are respectively attached to the side walls of the moving plate and the scraper.

[0021] By adopting the above technical solution, when there are few test blocks that need to be vibrated, by adjusting the position of the collecting rod on the protective plate and inserting the collecting rod into the collecting hole, the two sets of collecting rods are respectively against the side walls of the moving plate and the scraper, so that the remaining moving plate and scraper are fixed on one side of the vibrating table, reducing the impact of the remaining moving plate and scraper shaking on the vibration of the test blocks during the vibration process.

[0022] Optionally, an I-beam block is fixed to the top of the protective plate, and an I-beam groove adapted to the I-beam block is provided on the scraper.

[0023] By adopting the above technical solution, when the concrete in the mold is vibrated by the vibrating table, the I-beams and I-beam grooves on the protective plate are interlocked, making it difficult for the scraper to detach from the height direction of the vibrating table, thereby achieving stable positioning of the mold.

[0024] Optionally, the movable plate includes a straight plate located inside the protective plate and a clamping plate located outside the protective plate, with the end of the clamping plate being threadedly connected to the end of the straight plate.

[0025] By adopting the above technical solution, when it is necessary to vibrate test blocks of different heights, the clamping plate and the straight plate can be disassembled, and the moving plate can be taken out from the protective plate and replaced with moving plates of different heights. This satisfies the need to fix molds of different heights and facilitates the subsequent scraping of the concrete inside the mold by the scraper.

[0026] Optionally, the protective plate is provided with a scale, and the movable plate is fixedly connected to a pointer.

[0027] By adopting the above technical solution, when adjusting the position of the first lead screw on the protective plate and the position of the second lead screw on the moving plate, the distance between the moving plate and the protective plate and the distance between adjacent moving plates can be determined by aligning the pointer fixed on the moving plate with the scale on the protective plate, so as to accurately limit the positioning of molds of different sizes.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. When it is necessary to vibrate concrete test blocks of different sizes, adjust the position of the first screw on the protective plate and the position of the second screw on the moving plate, slide the moving plate so that the round hole on the moving plate is aligned with the first screw on the protective plate, and the second screw on the moving plate is aligned with the round hole on another moving plate. Then fix the moving plate on the protective plate with the insert rod. The adjacent moving plates are fixed to each other. The moving plates divide the vibration table into spaces of different widths, which can meet the needs of fixing molds of different sizes and enhance the vibration effect of concrete test blocks.

[0030] 2. When metal vibration is required for concrete test blocks of different sizes, move the scraper so that it is above the template and aligns the limiting hole on the scraper with the rotating rod on the moving plate. Rotate the rotating rod so that it abuts against the crossbar and inserts the crossbar into the fixing hole of the rotating rod, thus fixing the scraper to the moving plate and securing the template. This prevents the template from jumping up and down during vibration, enhancing the vibration effect on the concrete test block. After vibration, the scraper can be moved to scrape off and smooth the excess concrete on the template.

[0031] 3. When it is not necessary to vibrate the concrete test blocks, the second threaded rods and round holes on the adjacent movable plates are staggered in the direction parallel to the ground, and the fixing columns fixed on the movable plates are staggered in the direction perpendicular to the ground, which makes it convenient to stack the movable plates on one side of the protective plate. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 This is a partial structural cross-sectional schematic diagram of an embodiment of this application;

[0034] Figure 3 This is a partial structural schematic diagram of an embodiment of this application;

[0035] Figure 4 This is a schematic diagram illustrating the structure of the movable board according to an embodiment of this application.

[0036] Reference numerals: 1. Base; 11. Elastic element; 12. Vibrating table; 13. Vibrating motor; 2. Protective plate; 21. Sliding hole; 22. Collection hole; 23. Collection rod; 24. I-beam block; 3. Moving plate; 31. Straight plate; 32. Clamping plate; 4. Scraper; 41. I-beam groove; 51. First lead screw; 52. Conical block; 53. Snap ring; 54. Round hole; 551. Insert rod; 552. Insertion hole; 553. Trapezoidal block; 56. Second lead screw; 61. Fixed column; 62. Rotating rod; 621. Fixed hole; 63. Limiting hole; 64. Crossbar. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0038] This application discloses a concrete test block vibration device. (Refer to...) Figure 1 and Figure 2The concrete test block vibration device includes a base 1, an elastic element 11 fixed to the base 1 (which can be a steel spring or an air spring, with the air spring offering better noise reduction), a vibration table 12 fixed to the elastic element 11, a vibration motor 13 fixed to the bottom of the vibration table 12, and protective plates 2 fixed to the three sides of the vibration table 12. On the opposite side of the protective plate 2, an I-beam 24 is integrally formed at the end away from the base 1. A scraper 4 has an I-beam groove 41 adapted to the concave block. Each of the opposite protective plates 2 has a sliding hole 21. Another protective plate 2 is movably fitted to the side of the mold. A collection trough can be set on the side of the vibration table 12 near the other protective plate 2 to collect excess concrete. A movable plate 3 adapted to the sliding hole 21 is slidably installed inside the sliding hole 21. The movable plate 3 includes a straight plate mounted on the protective plate 2. The protective plate 2 is equipped with a retaining plate 31 and a retaining plate 32. The retaining plate 32 is located on the outer side wall of the protective plate 2, and the straight plate 31 is located on the inner side wall of the protective plate 2. The retaining plate 32 is inserted into the straight plate 31 and fixed with screws. The retaining plate 32 is in contact with the sliding hole 21. The top wall of the moving plate 3 is flush with the top wall of the mold, and the bottom wall of the scraper 4 is flush with the top wall of the mold. Several scrapers 4 are slidably arranged on the top wall of the protective plate 2. Two sets of collection holes 22 are provided on the protective plate 2. The number of collection holes 22 in each set corresponds to the number of moving plates 3. A matching collection column is inserted into the collection hole 22. The collection hole 22 is hexagonal. The distance between adjacent collection columns is the same as the thickness of the moving plate 3. The moving plate 3 and the scraper 4 have the same thickness. The protective plate 2 is equipped with a locking mechanism for locking the moving plate 3. The protective plate 2 is also equipped with a limiting mechanism for restricting the movement of the scraper 4.

[0039] Since the standard specimen for tensile testing is a 150mm cube, the standard specimen for compressive strength testing is also 150mm. 150mm The standard test block for the impermeability test is a cylinder with a diameter of 150mm and a height of 300mm. Therefore, the distance from the upper surface of the movable plate 3 to the vibrating table 12 is no more than 150mm. In order to facilitate the cleaning of concrete and reduce the amount of concrete falling between the two adjacent rows of molds, which would affect the vibration operation of the next batch, the height from the upper surface of the movable plate 3 to the inner bottom wall of the vibrating table 12 in this application is 150mm.

[0040] When it is necessary to fix a mold with a size greater than 150mm, the screws on the straight plate 31 can be turned to disassemble the moving plate 3 into a clamping plate 32 and a straight plate 31. By replacing the clamping plate 32 and the straight plate 31, the distance from the upper surface of the moving plate 3 to the vibrating table 12 is the same as the height of the mold. At the same time, the scraper 4 is slid off the I-beam 24 and replaced with a scraper 4 of a different size so that the lower surface of the scraper 4 is at the same height as the upper surface of the moving plate 3.

[0041] When vibrating the concrete test blocks, according to the number of molds, the collecting rod 23 is pulled out of the collecting hole 22, and the mold is placed in the vibrating table 12. The sliding plate 3 is slid, and the sliding plate 3 presses the mold against the protective plate 2. The mold is placed in again, and the next sliding plate 3 is slid, so that the mold is clamped between the two sliding plates 3. The locking mechanism fixes the sliding plate 3 on the protective plate 2, thereby fixing each row of molds and preventing the molds from moving left and right. Each mold in each row presses against each other to prevent the molds from moving back and forth. Then the collecting rod 23 is inserted into the collecting hole 22, so that the remaining sliding plate 3 is fixed on one side of the protective plate 2.

[0042] If the number of test blocks is insufficient to meet the number of molds per row, the molds can be placed upside down on the vibrating table 12 to ensure that each row of molds is pressed against each other. Move the scraper 4 and position it above the mold. The limiting mechanism fixes the scraper 4 to the moving plate 3 and maintains a certain distance between them. Start the vibration motor 13, which drives the vibrating table 12 to vibrate. The concave block on the protective plate 2 can securely fix the scraper 4 to the protective plate 2, reducing the vibration of the scraper 4. The steel spring or air spring on the base 1 keeps the base 1 stable with respect to the ground. When the vibrated concrete overflows the mold, the scraper 4 can be moved to scrape off the excess concrete on the mold. This device can fix molds of different sizes by setting the moving plate 3 and the scraper 4, and prevent the molds from shifting during vibration, thus enhancing the vibration effect of the vibrating table 12 on the concrete inside the mold.

[0043] Reference Figure 1 and Figure 3 The locking mechanism includes a first lead screw 51 threadedly connected to the side wall of the protective plate 2. A retaining ring 53 is coaxially fixed to one end of the first lead screw 51. A conical block 52 is coaxially fixed to the end of the first lead screw 51 near the retaining ring 53. A circular hole 54, which is adapted to be inserted into the conical block 52, is provided at the end of the movable plate 3. An insertion hole 552 is provided on the movable plate 3 at the circular hole 54. An insertion rod 551 is slidably disposed within the insertion hole 552. A spring is provided on the insertion rod 551. The end of 551 is welded or integrally formed with a trapezoidal block 553; the end of the movable plate 3 away from the round hole 54 is threadedly connected to a second lead screw 56, and one end of the second lead screw 56 is also coaxially fixed with a retaining ring 53 and a conical block 52. The conical blocks 52 and round holes 54 on adjacent movable plates 3 are aligned. The second lead screws 56 on the movable plates 3 are staggered in the direction parallel to the base 1. A pointer is fixed on the movable plate 3, and a scale is set on the protective plate 2 along the horizontal direction.

[0044] When it is necessary to fix molds of different sizes, rotate the first lead screw 51 and align the pointer on the moving plate 3 with the scale on the protective plate 2 to adjust the distance between the moving plate 3 and the protective plate 2. Rotate the second lead screw 56 to adjust the distance between adjacent moving plates 3, thereby dividing the vibrating table 12 into placement slots of different widths. Molds can be placed side by side into the placement slots. The conical block 52 on the first lead screw 51, which is threaded to the side wall of the protective plate 2, is aligned with the circular hole 54 on the moving plate 3. Slide the moving plate 3 so that the conical block 52 on the first lead screw 51 abuts against the trapezoidal block 553 on the insertion rod 551. The spring is compressed, and the insertion rod 551 moves upward along the insertion hole 552. When the conical block 52 passes the insertion rod 551, the insertion rod 551 is located between the conical block 52 and the retaining ring 53. The spring extends, so that the insertion rod 551 is inserted into the groove formed by the retaining ring 53 and the conical block 52. The movable plate 3 is fixed to the protective plate 2. The circular hole 54 on the subsequent movable plate 3 is aligned with the conical block 52 on the second lead screw 56, and the adjacent movable plate 3 is fixed by the insertion rod 551. After vibration, the conical block 52 can be separated from the insertion rod 551 by pulling out the insertion rod 551. In order to facilitate the storage of the movable plate 3, the second lead screw 56 on the first movable plate 3 and the second lead screw 56 on the third movable plate 3 are staggered in the horizontal direction, and the second lead screw 56 on the second movable plate 3 and the second lead screw 56 on the fourth movable plate 3 are staggered. After vibration is completed, the position of the second lead screw 56 on the movable plate 3 is adjusted, and the movable plate 3 is slid to one side of the protective plate 2. The movable plate 3 can be stacked on one side of the protective plate 2. By adjusting the position of the movable plate 3, molds of different sizes can be fixed at the same time, which enhances the functionality of the vibration table 12.

[0045] Reference Figure 1 and Figure 4 The limiting mechanism includes a fixed post 61 fixedly or threadedly connected to the moving plate 3, a rotating rod 62 rotatably disposed at the end of the fixed post 61, a limiting hole 63 on the scraper 4 that is matched with the rotating rod 62, a crossbar 64 slidably disposed on the scraper 4, a spring disposed on the crossbar 64, a fixed hole 621 on the rotating rod 62 that is matched with the crossbar 64, and the contact points between the rotating rod 62 and the crossbar 64 are both inclined surfaces. The fixed rods on adjacent moving plates 3 are staggered in the direction perpendicular to the base 1.

[0046] When the fixed column 61 is fixed on the movable plate 3, the distance between the scraper 4 and the movable plate 3 is kept constant. When the fixed column 61 is threaded onto the movable plate 3, the position of the fixed column 61 on the movable plate 3 can be adjusted so that the scraper 4 is at the center line of each row of molds. When the scraper 4 needs to be fixed, the limiting hole 63 on the scraper 4 is aligned with the rotating rod 62. The rotating rod 62 is rotated into the limiting hole 63, and the rotating rod 62 abuts against the crossbar 64, causing the crossbar 64 to move along the direction of the fixed column 61. The spring is compressed, and when the crossbar 64 is aligned with the hole on the rotating rod 62, the spring is extended, causing the crossbar 64 to extend into the fixing hole 621, thereby fixing the scraper 4 to the movable plate 3 and fixing the mold above the mold, reducing the up-and-down vibration of the mold during vibration. After vibration, the staggered arrangement of the fixed columns 61 facilitates the storage of the movable plate 3.

[0047] The implementation principle of a concrete test block vibration device according to an embodiment of this application is as follows: When the concrete test block is vibrated, the mold is placed side by side in the vibration table 12. By sliding the movable plate 3 and aligning the circular hole 54 on the movable plate 3 with the first lead screw 51 on the protective plate 2, the conical block 52 and the trapezoidal block 553 abut against each other, so that the insert rod 551 is inserted between the retaining ring 53 and the conical block 52, thereby fixing the movable plate 3 and the protective plate 2. The position of the first lead screw 51 on the protective plate 2 and the position of the second lead screw 56 on the movable plate 3 are adjusted so that the distance between the movable plate 3 and the protective plate 2 and the distance between adjacent movable plates 3 are consistent with the size of the mold placed on the vibration table 12. The movable plate 3 can divide the vibrating table 12 into placement slots of different widths to accommodate molds of different sizes and fix them in place to prevent movement. The movable scraper 4 is positioned so that the limiting hole 63 on the scraper 4 is aligned with the fixing column 61. The rotating rod 62 is rotated so that the crossbar 64 is inserted into the fixing hole 621 on the rotating rod 62, thereby fixing the movable plate 3 and the scraper 4 together. The scraper 4 is positioned above the mold, thus reducing the vertical movement of the mold. By fixing the positions of the movable plate 3 and the scraper 4 on the protective plate 2, molds of different sizes can be fixed simultaneously, and the vibration effect on the concrete test block is enhanced.

[0048] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete test block vibration device, comprising a base (1), an elastic element (11) fixed to the base (1), a vibration table (12) fixed to the elastic element (11), and a vibration motor (13) fixed below the vibration table (12), wherein the vibration table (12) is for placing molds, characterized in that: The vibrating table (12) has three protective plates (2) fixedly connected to its three sides. Two of the protective plates (2) are arranged opposite each other and have sliding holes (21). The other protective plate (2) is movably attached to the side of the mold. Several movable plates (3) that are adapted to the sliding holes (21) are slidably arranged on the protective plate (2). The movable plates (3) are movably attached to the side of the mold. Several scrapers (4) are slidably arranged on the protective plate (2). The scrapers (4) are movably attached to the top wall of the mold. The protective plate (2) is provided with a locking mechanism for locking the movable plates (3). The protective plate (2) is provided with a limiting mechanism for restricting the movement of the scrapers (4).

2. The concrete test block vibration device according to claim 1, characterized in that: The locking mechanism includes a first lead screw (51) threaded onto the protective plate (2), a conical block (52) fixed to one end of the first lead screw (51) near the moving plate (3), a retaining ring (53) coaxially fixed to the first lead screw (51), an insert rod (551) elastically slidably disposed on the moving plate (3), and a trapezoidal block (553) fixed to the end of the insert rod (551). The moving plate (3) has a circular hole (54) adapted to the conical block (52), and the moving plate (3) has an insertion hole (552) adapted to the insert rod (551) along the height direction. The trapezoidal block (553) is located between the retaining ring (53) and the conical block (52), and the trapezoidal block (553) is movably abutted against the side wall of the conical block (52).

3. The concrete test block vibration device according to claim 2, characterized in that: The end of the movable plate (3) away from the circular hole (54) is threaded with a second lead screw (56). The end of the second lead screw (56) is also fixed with the conical block (52) and the retaining ring (53). The second lead screw (56) on the movable plate (3) is directly opposite to the circular hole (54) on the next movable plate (3). The second lead screws (56) spaced apart are offset along the direction parallel to the ground.

4. The concrete test block vibration device according to claim 1, characterized in that: The limiting mechanism includes a fixed post (61) disposed on the movable plate (3), a rotating rod (62) rotatably disposed at the end of the fixed post (61), and a crossbar (64) elastically slidably disposed on the scraper (4). The end of the scraper (4) is provided with a limiting hole (63) that is compatible with the rotating rod (62). The rotating rod (62) is provided with a fixing hole (621) that is compatible with the crossbar (64). The fixed posts (61) on each movable plate (3) are staggered along the height direction.

5. A concrete test block vibration device according to claim 1, characterized in that: The protective plate (2) is provided with two sets of collection holes (22), and the protective plate (2) is provided with collection rods (23) that are compatible with the collection holes (22). The two sets of collection rods (23) correspond one-to-one with the moving plate (3) and the scraper (4), and the two sets of collection rods (23) are respectively attached to the side walls of the moving plate (3) and the scraper (4).

6. A concrete test block vibration device according to claim 1, characterized in that: The top of the protective plate (2) is fixed with an I-beam (24), and the scraper (4) has an I-beam groove (41) that matches the I-beam (24).

7. A concrete test block vibration device according to claim 1, characterized in that: The movable plate (3) includes a straight plate (31) located inside the protective plate (2) and a clamping plate (32) located outside the protective plate (2), with the end of the clamping plate (32) being threadedly connected to the end of the straight plate (31).

8. A concrete test block vibration device according to claim 1, characterized in that: The protective plate (2) is provided with a scale, and the movable plate (3) is fixed with a pointer.

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