Multifunctional concrete test block compression test device

Abstract

The invention discloses a multifunctional concrete test block compression test device, which belongs to the field of concrete compression resistance, and comprises a support, and the top of the support is fixedly connected with a hydraulic cylinder. The second rotating plate is horizontally located between the two tooth grooves, when the first driving plate drives the tooth grooves to move upwards, the tooth grooves provide upward force for the second rotating plate, the second rotating plate is blocked by the first rotating plate and cannot rotate upwards, and the second rotating plate can drive the first rotating plate to rotate upwards; a plurality of tooth grooves are formed, so that the first rotating plate can be rotated for multiple times, the first rotating plate can be shaken for multiple times, and the test block can be conveniently cleaned; and the cleaning effect on chippings on the surface of the first rotating plate is better, and chippings at dead corners are more convenient to clean.

Description

Technical Field

[0001] The invention relates to the field of concrete compression resistance, and more specifically to a multifunctional concrete test block compression resistance testing device. Background Art

[0002] The so-called cube compressive strength is the ultimate compressive strength of concrete measured by standard test methods after curing for 28 days in a humid environment with a temperature of 20±℃ and a relative humidity of more than 95% or in a non-flowing Ca(OH)2 saturated solution, using a standard test method. The so-called prism compressive strength is the calculation of axially compressed components in reinforced concrete structure calculations based on the actual structure conditions, and the prism compressive strength is often used as the basis for calculating the axially compressed components, because it is close to the actual stress state of the concrete components. Since the friction force on the upper and lower sides of the cube specimen is greater than that of the prism specimen when it is compressed, the cube strength is higher than the prism compressive strength. The standard specimen size is 150mm×150mm×150mm cube, 100mm×100mm×100mm cube, and cylinder: 150mm×300mm.

[0003] A Chinese patent with authorization announcement number CN114659876B discloses a concrete compressive strength test device. Before the rebound hammer contacts each detection point on the concrete detection surface, the calibration unit will contact the detection surface at the detection point in advance, and then the calibration unit adjusts the angle between the rebound hammer's impact rod and the concrete detection point to basically 90°. Thereafter, as the rebound hammer's impact rod gradually contacts the detection point, the calibration unit will completely fix the position of the rebound hammer to ensure that the rebound hammer's impact rod can contact the detection point basically vertically and stably, so that the data error of the concrete compressive strength tested by the rebound hammer is effectively reduced, thereby improving the judgment of the concrete compressive strength.

[0004] Although the above patent solves the problem that the angle between the impact rod and the detection point cannot be basically maintained at 90° during the manual operation of the rebound hammer, resulting in errors in the data of the concrete compressive strength tested by the rebound hammer, the compressive strength test requires multiple groups of tests, and after each test, the debris generated by the crushing of the specimen needs to be cleaned. In addition, the crushing chamber is a rectangular parallelepiped, which will have dead corners, making cleaning more troublesome. The residual debris can easily cause the test results to fluctuate, resulting in errors in the experimental data. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a multifunctional compressive test device for concrete test blocks. When the second rotating plate is in a horizontal state between two tooth grooves, when the first driving plate drives the tooth grooves to move upward, the tooth grooves provide an upward force to the second rotating plate, and the second rotating plate is blocked by the first rotating plate and cannot rotate upward. The second rotating plate can drive the first rotating plate to rotate upward, making the first rotating plate in an inclined state. At this time, the debris and test blocks on the surface of the first rotating plate slide off from the surface of the first rotating plate, which is more convenient for cleaning the debris on the surface of the first rotating plate. Moreover, multiple tooth grooves are provided, so that the first rotating plate can rotate multiple times, and the first rotating plate can vibrate multiple times, which has a better cleaning effect on the debris on the surface of the first rotating plate and is more convenient for cleaning the debris in dead corners.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A multifunctional compressive test device for concrete test blocks includes a bracket. The top of the bracket is fixedly connected with a hydraulic cylinder. The end of the output shaft of the hydraulic cylinder penetrates through the test chamber and extends into the interior of the test chamber. An experimental chamber is fixedly connected inside the bracket, and a cleaning mechanism is arranged inside the experimental chamber; The cleaning mechanism includes a receiving box fixed to the inner wall of the test chamber. The top of the receiving box is rotatably connected with a first rotating plate. The contact position between the test chamber and the output shaft of the hydraulic cylinder is in close fit. The end of the output shaft of the hydraulic cylinder is fixedly connected with a pressure plate. The rear side of the pressure plate is fixedly connected with a first driving plate. The rear side of the first rotating plate is rotatably connected with a second rotating plate. A through groove is opened on the rear side of the first rotating plate. A plurality of equally spaced tooth grooves are opened inside the first driving plate. The width of the receiving box is smaller than the width of the test chamber.

[0008] Further, a cylindrical block is slidably connected inside the first rotating plate. The top of the cylindrical block is rotatably connected with a ball. The top of the ball is higher than the upper end of the first rotating plate.

[0009] Further, a mounting block is fixedly connected inside the receiving box. A second moving groove for accommodating the movement of the cylindrical block is opened inside the mounting block. An arc groove for accommodating the rotation of the cylindrical block is opened at the rear side of the top of the second moving groove.

[0010] Further, a second driving plate is slidably connected inside the first rotating plate. The contact surface between the rear side of the second driving plate and the first driving plate is an arc surface. An extension block is formed inside the second driving plate extending towards the cylindrical block at the position corresponding to the cylindrical block.

[0011] Further, a limiting groove for accommodating the extension block is opened inside the cylindrical block. An arc-shaped extrusion block is opened inside the second driving plate at the position corresponding to the cylindrical block.

[0012] Furthermore, a first moving groove is provided inside the first rotating plate corresponding to the moving position of the second driving plate, a first spring welded to the second driving plate is provided inside the first moving groove, and a fan-shaped groove is provided on the surface of the first rotating plate corresponding to the position of the ball.

[0013] Furthermore, a second spring welded to the mounting block is provided at the bottom of the columnar block, and a fan-shaped groove is provided at the top of the first rotating plate at a position corresponding to the ball.

[0014] Furthermore, a second flip door is rotatably connected to the bottom of the front side of the experimental chamber, and a first flip door rotatably connected to the experimental chamber is arranged on the top of the second flip door.

[0015] Furthermore, a moving block is slidably connected to the front side of the first flip door, and opposite surfaces of the moving block are fixedly connected to limiting plates.

[0016] Furthermore, the thickness of the limiting plate is smaller than that of the moving block, the distance between the opposite surfaces of the moving block is 150 mm, and the opposite surfaces of the limiting plate are provided with oblique grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects: When the first driving plate moves upward with the tooth groove, the tooth groove provides an upward force to the second rotating plate, and the second rotating plate is blocked by the first rotating plate and cannot rotate upward, and the second rotating plate can rotate upward with the first rotating plate, so that the first rotating plate is in an inclined state. At this time, the debris on the surface of the first rotating plate and the test block slide off the surface of the first rotating plate, which is more convenient to clean the debris on the surface of the first rotating plate. In addition, there are multiple tooth grooves, so that the first rotating plate can rotate multiple times and the first rotating plate can be shaken multiple times, which has a better effect on cleaning the debris on the surface of the first rotating plate and is more convenient to clean the debris in the dead corner. The width of the receiving box is smaller than the width of the experimental chamber. At this time, there is a cavity on the front side of the receiving box, which is convenient for debris to fall on the front side of the receiving box. It is not necessary to clean it after each measurement, which reduces the burden on the staff, and the debris collection area is staggered with the test block experimental area, which effectively prevents the collected debris from affecting the measurement.

[0018] 2. By converting the sliding friction between the pressing block and the first rotating plate into the rolling friction between the pressing block and the ball bearings, this solution facilitates the movement of the test block by the staff and makes the adjustment of the test block position more convenient. When the first rotating plate rotates, the bottom of the cylindrical block rotates inside the arc-shaped groove, so that the cylindrical block will not affect the rotation of the first rotating plate during the rotation and tilting of the first rotating plate to pour out debris, making the rotation of the first rotating plate more convenient. Moreover, when large debris inclines on the surface of the first rotating plate, due to the exposed ball bearings on the upper surface of the first rotating plate, the debris slides down more easily, especially for better cleaning effect of large debris.

[0019] 3. By restricting the extension block through the limiting groove, the cylindrical block can only move upward. During the movement of the test block on the surface of the first rotating plate, the extrusion of the test block on the ball bearings will not cause the ball bearings to drive the cylindrical block to move, making the movement of the test block on the surface of the first rotating plate more convenient. During the movement of the second driving plate, the second driving plate drives the extension block to move, and the extension block leaves the inside of the limiting groove. At this time, the cylindrical block is not blocked by the extension block, and the cylindrical block can move inside the first rotating plate. Since the arc-shaped extrusion block is an arc surface, during the movement of the second driving plate, it extrudes the cylindrical block and the ball bearings, and the cylindrical block and the ball bearings move toward the installation block under the extrusion, so that the ball bearings reach the inside of the first rotating plate from the upper surface of the first rotating plate, facilitating the conversion from the contact between the ball bearings and the test block to the contact between the first rotating plate and the test block. In the subsequent compression test of the test block, it will not be affected by the ball bearings, making the compression test of the test block more accurate. Moreover, the pressure of the test block will not act on the ball bearings, avoiding the damage of the ball bearings and making the device more convenient to use.

[0020] 4. After the ball bearings retract into the inside of the installation block, the second driving plate blocks the original position of the ball bearings inside the first rotating plate, which is used to block the debris generated when the test block on the surface of the first rotating plate is pressed, effectively preventing the debris from entering the inside of the first rotating plate. After the second driving plate returns to its original position, since the cylindrical block and the ball bearings are no longer blocked by the second driving plate, the second spring then extrudes the cylindrical block, making the cylindrical block return to its original position to block the debris on the surface of the first rotating plate again. A fan-shaped groove is opened at the top of the first rotating plate corresponding to the position of the ball bearings. When the first rotating plate rotates, it effectively prevents the ball bearings from blocking small debris, and the small debris enters the fan-shaped groove. When the first rotating plate rotates, the debris that has entered the fan-shaped groove can slide down, achieving a better debris cleaning effect.

[0021] 5. In this solution, the test block is placed on the surface of the first flipping door, and then the edges and corners of the test block are aligned with the three inclined grooves. Then, the moving block is moved so that the moving block drives the test block to move on the surface of the first flipping door. Then, the test block leaves the surface of the first flipping door. Since the first flipping door and the first rotating plate are on the same horizontal plane, the test block reaches the surface of the first rotating plate. When it is difficult for the moving block to continue pushing the test block to move, the test block is at the center position of the first rotating plate, making it more convenient for the test block to reach the center position of the first rotating plate and reducing the steps of adjusting the test block on the surface of the first rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the concrete compression test device of the present invention; Figure 2 is a schematic internal structure diagram of the experimental chamber of the present invention; Figure 3 is a schematic structural diagram of the first flipping door of the present invention; Figure 4 is a sectional view of the experimental chamber of the present invention; Figure 5 is Figure 4 an enlarged view of part A of Figure 6 is a schematic structural diagram of the driving plate of the present invention; Figure 7 is a schematic structural diagram of the driving plate of the present invention; Figure 8 is a schematic structural diagram of the first rotating plate of the present invention.

[0023] Explanation of the reference numerals in the drawings: 1. Bracket; 11. Hydraulic cylinder; 12. Pressing plate; 121. First driving plate; 122. Tooth groove; 2. Experimental chamber; 21. First flipping door; 211. Moving block; 212. Limiting plate; 213. Inclined groove; 22. Second flipping door; 3. Cleaning mechanism; 31. Accommodating box; 32. First rotating plate; 321. Through groove; 322. Second rotating plate; 323. Sector groove; 324. First moving groove; 325. First spring; 33. Second driving plate; 331. Extension block; 332. Arc-shaped extrusion block; 34. Mounting block; 341. Arc-shaped groove; 342. Second spring; 343. Second moving groove; 344. Cylindrical block; 345. Limiting groove; 346. Ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 8, A multifunctional compressive test device for concrete test blocks, including a bracket 1. Inside the bracket 1, there is a fixed experimental chamber 2. By setting the experimental chamber 2, all the debris generated during the compressive test process is blocked by the experimental chamber 2, preventing the debris from splashing and causing injury to the staff. And the debris remains inside the experimental chamber 2, which is convenient for the staff to clean. Inside the experimental chamber 2, there is a cleaning mechanism 3. The cleaning mechanism 3 includes a receiving box 31 fixed to the inner wall of the experimental chamber 2. At the top of the receiving box 31, there is a rotatable first rotating plate 32. Place the test block on the top of the first rotating plate 32. At the top of the bracket 1, there is a fixed hydraulic cylinder 11. By starting the hydraulic cylinder 11, the output shaft of the hydraulic cylinder 11 moves. The end of the output shaft of the hydraulic cylinder 11 penetrates the experimental chamber 2 and extends into the experimental chamber 2. The contact position between the experimental chamber 2 and the output shaft of the hydraulic cylinder 11 is tightly fitted, effectively preventing debris from reaching the outside through the gap between the experimental chamber 2 and the output shaft of the hydraulic cylinder 11. The end of the output shaft of the hydraulic cylinder 11 is fixedly connected with a pressure plate 12. The test block on the surface of the first rotating plate 32 is pressurized by the pressure plate 12, causing the test block to break under pressure. At this time, some debris falls on the top of the first rotating plate 32. At the rear of the pressure plate 12, there is a fixed first driving plate 121. During the downward movement of the pressure plate 12, before the pressure plate 12 pressurizes the test block, at the rear of the first rotating plate 32, there is a rotatable second rotating plate 322. There is a through groove 321 at the rear of the first rotating plate 32. And the second rotating plate 322 can only rotate downward, and the second rotating plate 322 and the first rotating plate 32 are reset through a torsion spring and a rotating rod. The first driving plate 121 first squeezes the second rotating plate 322, causing the second rotating plate 322 to rotate. After the second rotating plate 322 rotates, the first driving plate 121 can continue to move downward until the pressure plate 12 pressurizes the test block. When the test block breaks, the pressure plate 12 drives the first driving plate 121 back to its original position. Inside the first driving plate 121, there are multiple equally spaced tooth grooves 122. And under the action of the torsion spring, the second rotating plate 322 is in a horizontal state between two tooth grooves 122. When the first driving plate 121 drives the tooth grooves 122 to move upward, the tooth grooves 122 provide an upward force to the second rotating plate 322. And the second rotating plate 322 is blocked by the first rotating plate 32 and cannot rotate upward. The second rotating plate 322 can then drive the first rotating plate 32 to rotate upward, making the first rotating plate 32 in an inclined state. At this time, the debris and the test block on the surface of the first rotating plate 32 both slide off the surface of the first rotating plate 32, making it more convenient to clean the debris on the surface of the first rotating plate 32. And there are multiple tooth grooves 122, enabling the first rotating plate 32 to rotate multiple times, causing the first rotating plate 32 to shake multiple times, improving the cleaning effect of the debris on the surface of the first rotating plate 32 and making it more convenient to clean the debris in the dead corners. The width of the receiving box 31 is smaller than the width of the experimental chamber 2. At this time, there is a cavity in front of the receiving box 31, facilitating the debris to fall in front of the receiving box 31, and there is no need to clean it every time after the measurement.Reduce the burden on staff, and stagger the debris collection area and the test block experiment area to effectively prevent the collected debris from affecting the measurement.

[0026] As Figures 1 to 8 shown, a cylindrical block 344 is slidably connected inside the first rotating plate 32. A ball 346 is rotatably connected to the top of the cylindrical block 344. The top of the ball 346 is higher than the upper end of the first rotating plate 32, facilitating the exposure of the ball 346 from the top of the first rotating plate 32. Place the pressing block on the top of the first rotating plate 32. At this time, the pressing block is in contact with the ball 346. Since the pressing block has a large mass, the sliding friction between the pressing block and the first rotating plate 32 is transformed into the rolling friction between the pressing block and the ball 346, facilitating the staff to move the test block and making the position adjustment of the test block more convenient. An installation block 34 is fixedly connected inside the accommodating box 31. A second moving groove 343 for accommodating the movement of the cylindrical block 344 is opened inside the installation block 34. An arc-shaped groove 341 for accommodating the rotation of the cylindrical block 344 is opened at the rear side of the top of the second moving groove 343. When the first rotating plate 32 rotates, the bottom of the cylindrical block 344 rotates inside the arc-shaped groove 341, so that the cylindrical block 344 does not affect the rotation of the first rotating plate 32 during the process of the first rotating plate 32 rotating and pouring debris, making the rotation of the first rotating plate 32 more convenient. And when large debris is inclined on the surface of the first rotating plate 32, due to the exposed balls 346 on the upper surface of the first rotating plate 32, it is more convenient for the debris to slide down, especially the cleaning effect on large debris is better.

[0027] As Figures 1 to 8As shown, after the test block is placed on the top of the first rotating plate 32, when the pressing plate 12 moves downward to extrude the test block, the first driving plate 121 moves inside the accommodating box 31. The second driving plate 33 is slidably connected inside the first rotating plate 32. When the first driving plate 121 moves, the first driving plate 121 extrudes the second driving plate 33. The contact surface between the rear side of the second driving plate 33 and the first driving plate 121 is an arc surface, which facilitates the movement of the arc surface of the second driving plate 33 when it is extruded by the first driving plate 121. An extension block 331 extends in the direction of the cylindrical block 344 at the position corresponding to the cylindrical block 344 inside the second driving plate 33. A limiting groove 345 for accommodating the extension block 331 is formed inside the cylindrical block 344. By restricting the extension block 331 through the limiting groove 345, the cylindrical block 344 can only move upward. During the movement of the test block on the surface of the first rotating plate 32, the extrusion of the test block on the ball 346 will not cause the ball 346 to drive the cylindrical block 344 to move, making it more convenient for the test block to move on the surface of the first rotating plate 32. During the movement of the second driving plate 33, the second driving plate 33 drives the extension block 331 to move, and the extension block 331 leaves the inside of the limiting groove 345. At this time, the cylindrical block 344 is not blocked by the extension block 331, and at this time, the cylindrical block 344 can move inside the first rotating plate 32. An arc-shaped extrusion block 332 is formed at the position corresponding to the cylindrical block 344 inside the second driving plate 33. Since the arc-shaped extrusion block 332 is an arc surface, during the movement of the second driving plate 33, the cylindrical block 344 and the ball 346 are extruded, and the cylindrical block 344 and the ball 346 move in the direction of the mounting block 34 under the extrusion, so that the ball 346 moves from the upper surface of the first rotating plate 32 to the inside of the first rotating plate 32, facilitating the contact between the ball 346 and the test block to be transformed into the contact between the first rotating plate 32 and the test block. In the subsequent process, when the test block is extruded by the pressing plate 12, it will not be affected by the ball 346, making the compressive experiment of the test block more accurate, and the pressure of the test block will not act on the ball 346, avoiding the damage of the ball 346 and making the device more convenient to use.

[0028] As Figures 1 to 8As shown, a first moving groove 324 is provided inside the first rotating plate 32 corresponding to the moving position of the second driving plate 33. By moving the second driving plate 33 inside the first moving groove 324, the movement of the second driving plate 33 becomes more convenient. A first spring 325 welded to the second driving plate 33 is arranged inside the first moving groove 324, enabling the second driving plate 33 to return to its original position under the action of the first spring 325, making it more convenient for the second driving plate 33 to return to its original position. A sector-shaped groove 323 is provided on the surface of the first rotating plate 32 corresponding to the position of the ball 346. When the ball 346 retracts into the inside of the mounting block 34, at this time, the second driving plate 33 blocks the original position of the ball 346 inside the first rotating plate 32, which is used to block the debris generated when the test block on the surface of the first rotating plate 32 is pressed, effectively preventing the debris from entering the inside of the first rotating plate 32. After the second driving plate 33 returns to its original position, since the cylindrical block 344 and the ball 346 are no longer blocked by the second driving plate 33, a second spring 342 welded to the mounting block 34 is arranged at the bottom of the cylindrical block 344. At this time, the second spring 342 presses the cylindrical block 344, causing the cylindrical block 344 to return to its original position and blocking the debris on the surface of the first rotating plate 32 again. A sector-shaped groove 323 is provided at the top of the first rotating plate 32 corresponding to the position of the ball 346. When the first rotating plate 32 rotates, it effectively prevents the ball 346 from blocking small debris, and the small debris enters the sector-shaped groove 323. When the first rotating plate 32 rotates, the debris that enters the sector-shaped groove 323 can slide down, achieving a better debris cleaning effect.

[0029] As Figures 1 to 8As shown in the figure, the front bottom of the experimental chamber 2 is rotatably connected with a second flip door 22. When there is too much debris in the experimental chamber 2, by rotating the second flip door 22, the experimental chamber 2 is connected to the outside, facilitating the cleaning of the debris. At the top of the second flip door 22, there is a first flip door 21 rotatably connected to the experimental chamber 2. After the first flip door 21 rotates, it is in the same plane as the first rotating plate 32. When the first flip door 21 does not lie in the same horizontal plane as the first rotating plate 32 after rotation, it indicates that the debris in front of the accommodating box 31 is too high and needs to be cleaned. Rotate the first flip door 21 so that the first flip door 21 and the first rotating plate 32 are in the same horizontal plane. Then, a moving block 211 is slidably connected to the front side of the first flip door 21. At this time, the moving block 211 is in a horizontal state. Limiting plates 212 are fixedly connected to the opposite surfaces of the moving block 211. The thickness of the limiting plates 212 is less than that of the moving block 211 to prevent the limiting plates 212 from affecting the other two specifications of test blocks and avoid the difficulty of placing the test blocks between the moving blocks 211. Place the test block on the surface of the first flip door 21. The distance between the opposite surfaces of the moving blocks 211 is 150 mm. Standard test piece sizes of 150 mm×150 mm×150 mm cubes and cylinders of 150 mm×300 mm can be placed in the gaps of the moving blocks 211. Then move the moving block 211 so that the moving block 211 drives the test block to move on the surface of the first flip door 21. Then the test block leaves the surface of the first flip door 21. Since the first flip door 21 and the first rotating plate 32 are in the same horizontal plane, the test block reaches the surface of the first rotating plate 32. When the moving block 211 is difficult to continue pushing the test block to move, the test block is at the center position of the first rotating plate 32, making it more convenient for the test block to reach the center position of the first rotating plate 32 and reducing the steps of adjusting the test block on the surface of the first rotating plate 32. Oblique grooves 213 are formed on the opposite surfaces of the limiting plates 212. When the standard test piece size is a 100 mm×100 mm×100 mm cube, just make two adjacent surfaces fit with the oblique grooves 213. At this time, the moving block 211 can be pushed to drive the test block to move to the surface of the first rotating plate 32, which is applicable to test blocks of different sizes, making the device more widely applicable and reducing the need to adjust the test block when the test block is on the surface of the first rotating plate 32.

[0030] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multifunctional compression test device for concrete test blocks, comprising a bracket (1), wherein the top of the bracket (1) is fixedly connected with a hydraulic cylinder (11), and the end of the output shaft of the hydraulic cylinder (11) penetrates through the test chamber (2) and extends into the interior of the test chamber (2), characterized in that: An experimental chamber (2) is fixedly connected inside the bracket (1), and a cleaning mechanism (3) is arranged inside the experimental chamber (2); The cleaning mechanism (3) includes a receiving box (31) fixed to the inner wall of the experimental chamber (2). A first rotating plate (32) is rotatably connected to the top of the receiving box (31). The contact position between the experimental chamber (2) and the output shaft of the hydraulic cylinder (11) is in close fit. The end of the output shaft of the hydraulic cylinder (11) is fixedly connected with a pressing plate (12). A first driving plate (121) is fixedly connected to the rear side of the pressing plate (12). A second rotating plate (322) is rotatably connected to the rear side of the first rotating plate (32). A through groove (321) is formed on the rear side of the first rotating plate (32). A plurality of equally spaced tooth grooves (122) are formed inside the first driving plate (121). The width of the receiving box (31) is smaller than the width of the experimental chamber (2).

2. The multifunctional concrete test block compressive test device according to claim 1, characterized in that: A cylindrical block (344) is slidably connected inside the first rotating plate (32). A ball (346) is rotatably connected to the top of the cylindrical block (344). The top of the ball (346) is higher than the upper end of the first rotating plate (32).

3. A multifunctional concrete test block compressive strength test device according to claim 2, characterized in that: An installation block (34) is fixedly connected inside the receiving box (31). A second moving groove (343) for the cylindrical block (344) to move is formed inside the installation block (34). An arc-shaped groove (341) for the cylindrical block (344) to rotate is formed at the rear side of the top of the second moving groove (343).

4. A multifunctional concrete test block compressive test device according to claim 3, characterized in that: A second driving plate (33) is slidably connected inside the first rotating plate (32). The contact surface between the rear side of the second driving plate (33) and the first driving plate (121) is an arc surface. An extension block (331) is formed inside the second driving plate (33) extending towards the cylindrical block (344) at the position corresponding to the cylindrical block (344).

5. A multifunctional concrete specimen compressive test device according to claim 4, characterized in that: A limiting groove (345) for the extension block (331) to be received is formed inside the cylindrical block (344). An arc-shaped pressing block (332) is formed inside the second driving plate (33) at the position corresponding to the cylindrical block (344).

6. The multifunctional concrete specimen compressive test device according to claim 1, characterized in that: A first moving groove (324) is formed inside the first rotating plate (32) at the moving position of the second driving plate (33). A first spring (325) welded to the second driving plate (33) is arranged inside the first moving groove (324). A sector-shaped groove (323) is formed on the surface of the first rotating plate (32) at the position corresponding to the ball (346).

7. A multifunctional compressive test device for concrete test blocks according to claim 5, characterized in that: A second spring (342) welded to the installation block (34) is arranged at the bottom of the cylindrical block (344). A sector-shaped groove (323) is formed on the top of the first rotating plate (32) at the position corresponding to the ball (346).

8. A multifunctional compressive test device for concrete test blocks according to claim 1, characterized in that: A second flip door (22) is rotatably connected to the front bottom of the experimental chamber (2). A first flip door (21) rotatably connected to the experimental chamber (2) is arranged at the top of the second flip door (22).

9. A multifunctional concrete specimen compression test device according to claim 8, characterized in that: A moving block (211) is slidably connected to the front side of the first flip door (21). Limiting plates (212) are fixedly connected to the opposite surfaces of the moving block (211).

10. A multifunctional concrete test block compressive test device according to claim 9, characterized in that: The thickness of the limit plate (212) is less than that of the moving block (211). The distance between the opposite faces of the moving block (211) is 150 mm, and inclined slots (213) are formed in the opposite faces of the limit plate (212).

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