Concrete slump testing device

Abstract

The invention discloses a concrete slump testing device, and relates to the technical field of concrete testing, the concrete slump testing device comprises a testing barrel and a funnel installed at the top of the testing barrel, the funnel and the testing barrel are connected through an insertion column, the interior of the funnel is connected with a partition plate and an adjusting mechanism installed at the bottom of the partition plate, and the adjusting mechanism comprises a fixing column. A fixing plate is connected to the bottom of the fixing column, a sliding opening is formed in the surface of the fixing plate, a sealing plate is slidably connected to the periphery of the fixing column, a hinge piece is connected to the bottom of the sealing plate, an outer inclined plate is connected to one side of the hinge piece, and when the outer inclined plate is at the maximum inclination angle, concrete falls to the position, close to the edge, of the inner wall of the testing barrel. Along with the continuous falling of the concrete, the telescopic spring gradually rebounds to push the sealing plate and the outer inclined plate on the sealing plate to move upwards, and in the rising process, the outer inclined plate gradually shrinks inwards to guide the residual concrete to slide to the central area of the test barrel, so that the uniform distribution of the concrete is realized.

Description

Technical Field

[0001] The invention relates to the technical field of concrete testing, and in particular to a concrete slump testing device. Background Art

[0002] Concrete slump test, as a key means to evaluate the workability of fresh concrete, profoundly affects the fluidity, pumpability and uniformity of the final product during the construction process. This test is designed to ensure that concrete can exhibit ideal operating performance in each stage of mixing, transportation, pouring and vibration, thereby ensuring construction efficiency and quality.

[0003] The theoretical basis of this test method is the natural collapse of concrete mixture under the action of its own weight. In actual operation, a standardized slump cylinder is used as a test container, the concrete mixture is filled to a specified height and compacted, and then the cylinder is lifted vertically to observe and record the collapse of the concrete due to its own weight. The slump value of the concrete can be obtained by measuring the vertical distance difference between the highest point of the concrete surface after collapse and the original height of the cylinder. This value directly reflects the consistency characteristics of the concrete.

[0004] However, when faced with concrete with poor fluidity, existing testing technologies have exposed obvious limitations. This type of concrete is often extremely unevenly distributed in the slump cylinder due to factors such as the complex shape of the coarse aggregate and increased internal friction between particles. Concrete tends to accumulate in the center of the cylinder to form irregular clumps, and is difficult to effectively diffuse to the bottom edge of the cylinder. This uneven distribution not only increases the difficulty of the test, but may also mislead the test results. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing testing technology has obvious limitations when facing concrete with poor fluidity. This type of concrete is often extremely unevenly distributed in the slump cylinder due to factors such as complex coarse aggregate morphology and increased internal friction between particles. Concrete is easy to accumulate in the core area of ​​the cylinder to form irregular lumps, and it is difficult to effectively diffuse to the bottom edge of the cylinder. This non-uniform distribution state not only increases the difficulty of testing, but may also mislead the test results. Therefore, a solution is proposed.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a concrete slump test device: comprising a test barrel and a funnel installed on the top of the test barrel, the funnel and the test barrel are connected by a plug column, a sliding port is provided inside the funnel, and a dividing plate is connected inside the funnel, and also includes: an adjustment mechanism and a closing component installed at the bottom of the dividing plate; The adjusting mechanism comprises a fixing column, a bottom of the fixing column is connected to a fixing plate, a surface of the fixing plate is provided with a plurality of sliding openings, the outer periphery of the fixing column is slidably connected to a closing plate, the closing plate and the sliding opening are slidably connected through a sliding rod, the outer periphery of the sliding rod is connected to a connecting sleeve block, the outer periphery of the sliding rod is sleeved with a telescopic spring, the bottom of the closing plate is connected to a plurality of hinge parts, one side of the hinge part is connected to an outer inclined plate, and a first moving groove is provided on the inner side of the outer inclined plate, a first welding frame is installed on the top of the fixing plate, a first positioning rod is installed between the inner wall of the first welding frame, the outer periphery of the first positioning rod is rotatably connected to the first rotating rod, the inner wall of the first moving groove is slidably connected to the first moving block, a first connecting frame is installed on one side of the first moving block, a first connecting column is installed between the inner walls of the first connecting frame, the outer periphery of the first connecting column is rotatably connected to the first rotating sleeve, and the first supporting column is connected between the first rotating sleeve and the first rotating rod, and the top of the fixing plate is connected to an abutment block limiting the inclination angle of the first supporting column; As the closing plate is pressed down, the first mounting frame moves downward with the outer inclined plate. As the outer inclined plate descends, the outer inclined plate expands outward under the support of the first supporting column. The inner inclined plate included in the closing assembly expands outward along with the expansion of the outer inclined plate, closing the gaps between adjacent outer inclined plates, so that the concrete is evenly distributed from the outside to the inside.

[0007] As a further description of the above technical solution: The hinged member comprises a first mounting frame mounted on the bottom of the closing plate, a first mounting rod is fixedly connected between the inner walls of the first mounting frame, and a first rotating sleeve rod connected to the outer inclined plate is rotatably connected to the outer periphery of the first mounting rod.

[0008] As a further description of the above technical solution: The side surface of the outer inclined plate is provided with an oblique angle, and as the closing plate rises, the gradually closed oblique angle scrapes off the concrete on the surface of the inner inclined plate.

[0009] As a further description of the above technical solution: The closing assembly includes a plurality of second mounting frames installed at the bottom of the closing plate, second mounting rods are connected between the inner walls of the second mounting frames, the outer periphery of the second mounting rods is rotatably connected to a second rotating sleeve rod, and one side of the second rotating sleeve rod is connected to an inner inclined plate, a second movable groove is opened on the inner wall of the inner inclined plate, and the second movable groove is connected to the fixed plate through a support member.

[0010] As a further description of the above technical solution: The support member includes a second welding frame fixedly mounted on the surface of the fixed plate, a second positioning rod is fixedly connected between the inner walls of the second welding frame, the outer periphery of the second positioning rod is rotatably connected to the second rotating rod, the inner wall of the second movable groove is slidably connected to the second movable block, one side of the second movable block is connected to the second connecting column through the second connecting frame, the outer periphery of the second connecting column is rotatably connected to the second rotating sleeve, and the second rotating sleeve and the second rotating rod are connected via the second supporting column.

[0011] As a further description of the above technical solution: A knocking assembly is installed on the inner wall of the inner inclined plate, and the knocking assembly includes a contact block fixedly connected to the inner wall of the inner inclined plate, and a mounting column fixedly connected to the outer periphery of the connecting sleeve block. An inner cavity is opened inside the mounting column, and a telescopic part is slidably connected to the inner wall of the inner cavity.

[0012] As a further description of the above technical solution: The telescopic member comprises a telescopic rod sliding inside the inner cavity, a compression spring is connected between the telescopic rod and the mounting column, and a knocking block abutting against the contact block is connected to a side of the telescopic rod away from the compression spring.

[0013] As a further description of the above technical solution: A rotating assembly is installed at the bottom of the fixed plate, and the rotating assembly includes a bearing fixedly connected to the bottom of a plurality of sliding rods and a limiting rod fixedly installed inside the fixed column. A threaded groove is provided on the outer periphery of the limiting rod, and an abutting rod abutting against the threaded groove is fixedly connected to the inner ring of the bearing. A stirring member is connected to the bottom of the bearing, and a lifting member is slidably connected inside the limiting rod.

[0014] As a further description of the above technical solution: The stirring member comprises a limiting plate connected to the bottom of the bearing, the outer wall of the limiting plate is slidably connected with a telescopic sleeve plate, and a plurality of stirring rods are installed on the outer periphery of the telescopic sleeve plate.

[0015] As a further description of the above technical solution: The lifting member includes a lifting rod slidably connected to the inside of the limiting rod, the bottom of the lifting rod passes through the limiting rod and is connected to the telescopic sleeve, a plurality of annular positioning holes are opened inside the limiting rod, an inner groove is opened inside the lifting rod, a positioning column abutting the positioning hole is slidably connected to the inner wall of the inner groove, and an extrusion spring is connected between the positioning column and the inner groove.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The first step is to pour concrete into the funnel, and the concrete flows to the surface of the closed plate through the sliding port. As the concrete is continuously poured, its accumulated weight gradually increases, pushing the closed plate to descend steadily, and squeezing the built-in telescopic spring at the same time. When the closed plate descends, the outer inclined plate firmly connected to its bottom also descends synchronously, and gradually expands outward under the action of external force. In this process, the first support column and its related rotation and sliding mechanism ensure that the outer inclined plate can be smoothly expanded according to the predetermined trajectory and angle; When the outer inclined plate reaches the maximum inclination angle, the concrete begins to slide down its slope into the test barrel, first falling on the inner wall of the test barrel near the edge to achieve initial dispersion. As the concrete continues to fall, the telescopic spring gradually rebounds, pushing the closing plate and the outer inclined plate on it to move upward. During the rising process, the outer inclined plate gradually contracts inward, guiding the remaining concrete to slide to the center area of ​​the test barrel, achieving uniform distribution of the concrete and increasing the accuracy of the test results. In addition, the inner inclined plate will be expanded outward synchronously when the closing plate continues to descend, and will always fit closely with the outer inclined plate to ensure that concrete will not accumulate in the gap between the outer inclined plates. The expansion process of the inner inclined plate is also precisely controlled by the relevant rotation and sliding mechanism. The side of the outer inclined plate is designed with an angle, which plays an important role when the closed plate rises. The angle will not squeeze the residual concrete on the surface of the inner inclined plate, but can scrape and guide the concrete with its own angle of inclination, ensuring smooth discharge and uniform distribution of concrete. In order to further improve the uniformity of concrete distribution, a percussion vibration mechanism is introduced. This mechanism is combined with the movement of the inner inclined plate. The percussion block performs continuous and powerful percussion vibration on the contact block. This vibration can be quickly and effectively transmitted to the outer inclined plate and the inner inclined plate, breaking up the concrete particles and clumps to achieve a more uniform dispersion. At the same time, the vibration can also promote the rearrangement and combination of concrete particles, making them more tightly filled in the test barrel.

[0017] The vibration of the knocking will also be transmitted to the closing plate through the relevant structural system, weakening the adhesion and cohesion of the concrete on it, thereby ensuring that the concrete can smoothly pass through the outer inclined plate and the inner inclined plate into the test barrel. This process not only helps to keep the closing plate clean and run smoothly, but also improves the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shows a schematic diagram of the overall structure according to the present invention; Figure 2 It shows that according to the present invention Figure 1 Schematic diagram of the internal structure; Figure 3A schematic diagram of a funnel structure according to the present invention is shown; Figure 4 A schematic diagram of the structure of a partition plate according to the present invention is shown; Figure 5 It shows a schematic diagram of the structure of the outer inclined plate and the inner inclined plate according to the present invention; Figure 6 A schematic diagram of the structure of the regulating mechanism according to the present invention is shown; Figure 7 A schematic diagram of the structure of a closure assembly according to the present invention is shown; Figure 8 It shows a schematic structural diagram of a rotating assembly according to the present invention; Fig. 9 It is shown that according to the present invention Figure 8 The enlarged schematic diagram at A in the middle; Fig.10 A schematic diagram of a bearing structure according to the present invention is shown; Fig.11 A schematic structural diagram of a striking assembly according to the present invention is shown.

[0019] Legend: 10. Test barrel; 11. Funnel; 111. Sliding port; 112. Dividing plate; 113. Opening; 12. Inserting column; 20. Adjustment mechanism; 21. Fixed column; 22. Fixed plate; 221. Sliding port; 23. Closing plate; 24. Sliding rod; 241. Connecting sleeve; 25. Telescopic spring; 26. First mounting frame; 261. First mounting rod; 262. First rotating sleeve; 263. Outer inclined plate; 264. Bevel; 265. First moving groove; 27. First welding frame; 271. First positioning rod; 272. First rotating rod; 273. First moving block; 274. First connecting frame; 275. First rotating sleeve; 276. First connecting column; 277. First supporting column; 28. Abutment block; 30. Closing assembly; 31. Second mounting frame; 311. Second mounting rod; 312. Second rotating sleeve rod; 32. Inner inclined plate; 321. Second moving groove; 33. Second welding frame; 331. Second positioning rod; 332. Second rotating rod; 333. Second moving block; 334. Second connecting frame; 335. Second rotating sleeve; 336. Second connecting column; 337. Second supporting column; 40. knocking assembly; 41. contact block; 42. mounting column; 43. inner cavity; 44. telescopic rod; 45. compression spring; 46. knocking block; 50. Rotating assembly; 51. Limiting rod; 511. Threaded groove; 52. Bearing; 521. Abutting rod; 53. Limiting plate; 54. Telescopic sleeve; 55. Agitating rod; 56. Lifting rod; 561. Positioning hole; 562. Inner groove; 563. Positioning column; 564. Extrusion spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 11 As shown, a concrete slump test device provided by the present invention includes a test barrel 10 and a funnel 11 installed on the top of the test barrel 10, the funnel 11 and the test barrel 10 are connected by a plug post 12, a sliding port 111 is provided inside the funnel 11, and a dividing plate 112 is connected inside the funnel 11, and also includes: an adjustment mechanism 20 installed at the bottom of the dividing plate 112, the adjustment mechanism 20 includes a fixed column 21 installed at the bottom of the dividing plate 112, and the bottom of the fixed column 21 is connected to a fixed plate 22, The surface of the fixed plate 22 is provided with a plurality of sliding openings 221, the outer periphery of the fixed column 21 is slidably connected to the closing plate 23, the closing plate 23 and the sliding opening 221 are slidably connected via a sliding rod 24, the outer periphery of the sliding rod 24 is fixedly connected to a connecting sleeve block 241, the outer periphery of the sliding rod 24 is sleeved with a telescopic spring 25, the bottom of the closing plate 23 is fixedly connected to a plurality of hinges, one side of the hinge is connected to an outer inclined plate 263, the side of the outer inclined plate 263 is provided with an angle 264, the hinge includes a hinge installed on the closing plate 23, and a hinge is provided on the outer side of the closing plate 23. The first mounting frame 26 at the bottom of the plate 23, the first mounting frame 26 is fixedly connected with a first mounting rod 261 between the inner walls, the outer periphery of the first mounting rod 261 is rotatably connected with a first rotating sleeve rod 262 connected with the outer inclined plate 263, and the inner side of the outer inclined plate 263 is provided with a first moving groove 265, the top of the fixed plate 22 is fixedly installed with a first welding frame 27, the inner walls of the first welding frame 27 are installed with a first positioning rod 271, and the outer periphery of the first positioning rod 271 is rotatably connected with a first rotating rod 272 The inner wall of the first moving groove 265 is slidably connected with a first moving block 273, a first connecting frame 274 is fixedly installed on one side of the first moving block 273, a first connecting column 276 is installed between the inner walls of the first connecting frame 274, the outer periphery of the first connecting column 276 is rotatably connected with a first rotating sleeve 275, and a first supporting column 277 is connected between the first rotating sleeve 275 and the first rotating rod 272, and an abutting block 28 for limiting the tilt angle of the first supporting column 277 is fixedly connected to the top of the fixed plate 22; In the preparation stage of the concrete test, the first step is to pour the concrete to be tested into the funnel 11. The concrete then flows through the sliding opening 111 between the dividing plates 112 in the funnel 11 to the surface of the closing plate 23 below. This process ensures that the concrete can be evenly distributed in the initial stage, laying a good foundation for subsequent tests. As concrete is continuously poured, its accumulated weight gradually increases, generating downward pressure on the closing plate 23. Under the pressure, the closing plate 23 slides down steadily and smoothly along the outer circumference of the fixed column 21. At the same time, the sliding rod 24 closely connected to the closing plate 23 and the connecting sleeve block 241 thereon effectively squeeze the built-in telescopic spring 25. This design not only slows down the descending speed of the closing plate 23, but also ensures the stability and safety of the entire process. As the closing plate 23 continues to descend, the outer inclined plate 263, whose bottom is firmly connected by the first mounting frame 26, also descends synchronously. The outer inclined plate 263 is firmly supported by the first supporting column 277 in the initial stage. However, as the closing plate 23 further descends, the outer inclined plate 263 begins to gradually expand outward under the action of external force. In this expansion process, the first supporting column 277 plays a key role. The first rotating rod 272 connected to one side rotates with the first positioning rod 271 as the center of the circle, while the first rotating sleeve 275 on the other side rotates flexibly along the outer circumference of the first connecting column 276, and at the same time pulls the first moving block 273 on the first connecting frame 274 to slide smoothly on the inner wall of the first moving groove 265. This series of precise mechanical linkages ensures that the outer inclined plate 263 can be smoothly expanded according to the predetermined trajectory and angle. When the first support column 277 contacts the preset abutment block 28, the outer inclined plate 263 reaches its maximum inclination angle. At this time, the concrete accumulated on the top of the closing plate 23 begins to slide down along the inclined surface of the outer inclined plate 263 and enters the interior of the test barrel 10 below. Due to the special design of the outer inclined plate 263, the concrete first falls along its surface to the position near the edge of the inner wall of the test barrel 10, thereby achieving preliminary dispersion of the concrete. As the concrete continues to fall, its squeezing force on the telescopic spring 25 gradually weakens. When the weight of the concrete is reduced to a certain extent, the telescopic spring 25 begins to rebound gradually, pushing the closing plate 23 and the outer inclined plate 263 thereon to move upward. During the rising process, the outer inclined plate 263 gradually shrinks inward. This change guides the remaining concrete to slide along its surface to the central area of ​​the test barrel 10. Through this ingenious design, the concrete is evenly distributed from the edge to the center in the test barrel 10, effectively avoiding the problem of accumulation of concrete with poor fluidity in the center, thereby ensuring the accuracy and reliability of the test results.

[0022] like Figure 1 , Figure 2, Figure 5 , Figure 6 , Figure 7 , Fig.11 As shown, and the closing assembly 30, the closing assembly 30 includes a plurality of second mounting frames 31 installed at the bottom of the closing plate 23, the second mounting rods 311 are connected between the inner walls of the second mounting frames 31, the outer periphery of the second mounting rods 311 is rotatably connected to the second rotating sleeve rod 312, and one side of the second rotating sleeve rod 312 is connected to the inner inclined plate 32, the inner wall of the inner inclined plate 32 is provided with a second moving groove 321, and the second moving groove 321 is connected to the fixed plate 22 through a support member, and the support member includes a fixedly mounted on the surface of the fixed plate 22 A second welding frame 33 is provided, a second positioning rod 331 is fixedly connected between the inner walls of the second welding frame 33, a second rotating rod 332 is rotatably connected to the outer periphery of the second positioning rod 331, a second moving block 333 is slidably connected to the inner wall of the second moving groove 321, one side of the second moving block 333 is connected to a second connecting column 336 via a second connecting frame 334, a second rotating sleeve 335 is rotatably connected to the outer periphery of the second connecting column 336, and the second rotating sleeve 335 is connected to the second rotating rod 332 via a second supporting column 337; In the process of further optimizing the distribution of concrete, the inner inclined plate 32 is specially designed to deal with the gap problem between the outer inclined plates 263. When the closing plate 23 continues to descend, the inner inclined plate 32 will be cleverly supported by the second support column 337 and will be synchronously expanded outwards, and will always keep a close fit with the outer inclined plate 263. This design ensures that even if there are gaps between the outer inclined plates 263, concrete will not accumulate in these gaps, but will be effectively guided into the test barrel 10 by the inner inclined plate 32; As the inner inclined plate 32 is gradually unfolded, the second rotating rod 332 connected to one side of the second supporting column 337 rotates with the second positioning rod 331 as the center, while the second rotating sleeve 335 on the other side rotates flexibly along the outer circumference of the second connecting column 336. This rotating action is transmitted to the second moving block 333 through the second connecting frame 334, so that it slides smoothly on the inner wall of the second moving groove 321, and finally realizes the precise sealing of the gap between the inner inclined plate 32 and the outer inclined plate 263, effectively preventing the accumulation of concrete; In addition, a bevel 264 is specially designed on the side of the outer inclined plate 263. This design plays an important role when the closing plate 23 rises. As the outer inclined plate 263 gradually shrinks, a relative movement is generated between the bevel 264 and the inner inclined plate 32 that is always attached thereto. During this process, the bevel 264 will not squeeze the residual concrete on the surface of the inner inclined plate 32. Instead, it can use its own inclination angle to scrape and guide the concrete, so that it can slide smoothly along the bevel 264 into the test barrel 10. At the same time, as the two adjacent outer inclined plates 263 gradually fit together, the bevel 264 between them also forms a continuous downward sliding channel, further ensuring the uniform distribution and smooth discharge of concrete.

[0023] like Figure 1 , Figure 5 , Figure 8 , Fig.11 As shown, a knocking assembly 40 is installed on the inner wall of the inner inclined plate 32, and the knocking assembly 40 includes a contact block 41 fixedly connected to the inner wall of the inner inclined plate 32, and a mounting column 42 fixedly connected to the outer periphery of the connecting sleeve block 241, an inner cavity 43 is provided inside the mounting column 42, and a telescopic member is slidably connected to the inner wall of the inner cavity 43, and the telescopic member includes a telescopic rod 44 sliding inside the inner cavity 43, and a compression spring 45 is connected between the telescopic rod 44 and the mounting column 42, and a knocking block 46 abutting against the contact block 41 is connected to the side of the telescopic rod 44 away from the compression spring 45; In order to further improve the uniformity of concrete distribution during the test, a percussion vibration mechanism is introduced, which is cleverly combined with the movement of the inner inclined plate 32 to achieve effective dispersion of the concrete. Specifically, whether the inner inclined plate 32 expands outward to close the gap between the outer inclined plates 263, or contracts inward to match the rise of the closing plate 23, it will drive the contact block 41 closely connected thereto to move together; At this time, the knocking block 46 always maintains a close contact state with the contact block 41 under the strong rebound force of the compression spring 45. As the inner inclined plate 32 expands or contracts, the contact position of the contact block 41 also changes accordingly. This change is then transmitted to the knocking block 46. According to the change in the position of the contact block 41, the knocking block 46 performs continuous and powerful knocking vibration on the contact block 41 through the elastic force of the compression spring 45. Since the outer inclined plate 263 is always in close contact with the inner inclined plate 32, the knocking vibration can be quickly and effectively transmitted to the outer inclined plate 263. After the concrete on the outer surface of the outer inclined plate 263 and the inner inclined plate 32 is subjected to the knocking vibration, the particles and lumps inside thereof will be broken up, thereby achieving a more uniform dispersion. This vibration effect not only helps to eliminate the accumulation and agglomeration that may occur in the distribution process of concrete, but also promotes the rearrangement and combination of concrete particles, so that the concrete particles are more tightly filled in the test barrel 10. In addition, the vibration of the knocking will be further transmitted to the closing plate 23 through the structural system of the second rotating sleeve 312 and the second mounting frame 31. After the concrete accumulated on the closing plate 23 is subjected to the vibration, its internal adhesion and cohesion will be weakened, thereby making it easier to vibrate off the closing plate 23. This process not only helps to keep the closing plate 23 clean and run smoothly, but also ensures that during the rising or falling process of the closing plate 23, the concrete can smoothly pass through the outer inclined plate 263 and the inner inclined plate 32 into the test barrel 10, thereby realizing a complete falling and rising process.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 , Fig. 9 , Fig.10 As shown, a rotating assembly 50 is installed at the bottom of the fixed plate 22, and the rotating assembly 50 includes a bearing 52 fixedly connected to the bottom of the plurality of sliding rods 24 and a limiting rod 51 fixedly installed inside the fixed column 21. A threaded groove 511 is provided on the outer periphery of the limiting rod 51, and an abutting rod 521 abutting against the threaded groove 511 is fixedly connected to the inner ring of the bearing 52. A stirring member is connected to the bottom of the bearing 52, and a lifting member is slidably connected inside the limiting rod 51. The stirring member includes a limiting plate 53 connected to the bottom of the bearing 52, and a telescopic sleeve plate 54 is slidably connected to the outer wall of the limiting plate 53. Under the limiting action of the limiting plate 53, the telescopic sleeve plate 54 It can only move up and down. When the limit plate 53 rotates, the limit plate 53 will drive the telescopic sleeve plate 54 to rotate together. A plurality of stirring rods 55 are installed on the periphery of the telescopic sleeve plate 54. The lifting member includes a lifting rod 56 slidably connected to the inside of the limit rod 51 through the opening 113. The bottom of the lifting rod 56 passes through the limit rod 51 and is connected to the telescopic sleeve plate 54. Three annular positioning holes 561 are opened inside the limit rod 51. An inner groove 562 is opened inside the lifting rod 56. A positioning column 563 abutting against the positioning hole 561 is slidably connected to the inner wall of the inner groove 562. An extrusion spring 564 is connected between the positioning column 563 and the inner groove 562. In order to further improve the uniformity and compactness of the concrete in the test barrel 10, when the closing plate 23 begins to press down, this action not only triggers the expansion mechanism of the outer inclined plate 263 and the inner inclined plate 32, but also drives the sliding rod 24 to slide smoothly on the inner wall of the sliding opening 221. During this process, the bearing 52 also descends, so that the abutting rod 521 of the inner ring of the bearing 52 can slide accurately along the threaded groove 511 on the outer periphery of the limiting rod 51, thereby causing the inner ring of the bearing 52 to rotate; The rotation of the inner ring of the bearing 52 is the key driving force of the mixing process. It drives the bottom limit plate 53 and the telescopic sleeve plate 54 connected thereto to rotate synchronously. The stirring rod 55 on the telescopic sleeve plate 54 deeply stirs the concrete that has been evenly distributed in the test barrel 10 as the sleeve plate rotates. This mixing process not only helps to reduce the bubbles inside the concrete and improve the density of the concrete, but also ensures that the concrete components are fully mixed and improves the overall quality. Taking into account the special situation that concrete is added in three times, a height adjustment mechanism of the stirring rod 55 is specially designed. By moving the lifting rod 56, the height of the stirring rod 55 can be easily adjusted. During the movement, the positioning column 563 first contacts the limit rod 51 in the extended state, and applies pressure to compress the extrusion spring 564. This action releases the limitation of the positioning hole 561 on the positioning column 563, so that the lifting rod 56 can freely drive the telescopic sleeve 54 to slide on the outer periphery of the limit plate 53. As the lifting rod 56 continues to move, the positioning column 563 in the contracted state is pushed into the positioning hole 561 under the action of the rebound force of the extrusion spring 564, thereby realizing the re-limitation of the lifting rod 56. This design allows the height of the stirring rod 55 to be accurately adjusted according to the distribution of concrete at different levels, ensuring the targetedness and effectiveness of the mixing.

[0025] Working principle: In the preparation stage of concrete testing, concrete is first poured into the funnel 11, and flows smoothly to the closing plate 23 through the sliding port 111 to achieve initial uniform distribution. As the concrete accumulates, the closing plate 23 slides down under pressure, squeezing the telescopic spring 25, and at the same time driving the outer inclined plate 263 to synchronously descend and expand outward. The first support column 277 works with the first rotating rod 272, the first rotating sleeve 275 and other components to ensure that the outer inclined plate 263 is expanded to the maximum angle according to the predetermined trajectory, guiding the concrete to slide along the inclined surface to the edge of the test barrel 10 to achieve initial dispersion; As the concrete falls, the telescopic spring 25 rebounds, pushing the closing plate 23 and the outer inclined plate 263 up and inward, guiding the remaining concrete to the center of the test barrel 10, completing the uniform distribution from the edge to the center; In order to fill the gap of the outer inclined plate 263, the inner inclined plate 32 is simultaneously expanded outward and closely fits the outer inclined plate 263 to ensure that there is no accumulation of concrete. Furthermore, the knocking vibration mechanism is combined with the movement of the inner inclined plate 32, and the vibration of the contact block 41 is transmitted to the outer inclined plate 263 through the knocking block 46, thereby breaking up the concrete particles and lumps, enhancing the dispersion effect, and improving the compactness and filling quality of the concrete.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete slump test device, comprising a test barrel (10) and a funnel (11) mounted on the top of the test barrel (10), the funnel (11) and the test barrel (10) being connected via a plug post (12), a material sliding port (111) being provided inside the funnel (11), and a partition plate (112) being connected inside the funnel (11), characterized in that: It also includes: an adjustment mechanism (20) and a closing assembly (30) installed at the bottom of the dividing plate (112); The adjustment mechanism (20) comprises a fixed column (21), the bottom of the fixed column (21) is connected to a fixed plate (22), the surface of the fixed plate (22) is provided with a plurality of sliding openings (221), the outer periphery of the fixed column (21) is slidably connected to a closing plate (23), the closing plate (23) and the sliding opening (221) are slidably connected via a sliding rod (24), the outer periphery of the sliding rod (24) is connected to a connecting sleeve block (241), the outer periphery of the sliding rod (24) is sleeved with a telescopic spring (25), the bottom of the closing plate (23) is connected to a plurality of hinges, one side of the hinge is connected to an outer inclined plate (263), the inner side of the outer inclined plate (263) is provided with a first moving groove (265), the top of the fixed plate (22) is provided with a first welding frame (2 7), a first positioning rod (271) is installed on the inner wall of the first welding frame (27), the outer periphery of the first positioning rod (271) is rotatably connected to the first rotating rod (272), the inner wall of the first moving groove (265) is slidably connected to the first moving block (273), a first connecting frame (274) is installed on one side of the first moving block (273), a first connecting column (276) is installed between the inner walls of the first connecting frame (274), the outer periphery of the first connecting column (276) is rotatably connected to the first rotating sleeve (275), a first supporting column (277) is connected between the first rotating sleeve (275) and the first rotating rod (272), and a contact block (28) for limiting the tilt angle of the first supporting column (277) is connected to the top of the fixing plate (22); As the closing plate (23) is pressed downward, the first mounting frame (26) moves downward with the outer inclined plate (263). As the outer inclined plate (263) descends, the outer inclined plate (263) is expanded outward under the support of the first support column (277). As the outer inclined plate (263) is expanded, the inner inclined plate (32) included in the closing assembly (30) is expanded outward together with the expansion of the outer inclined plate (263), closing the gaps between adjacent outer inclined plates (263), so that the concrete is evenly distributed from the outside to the inside.

2. A concrete slump testing device according to claim 1, characterized in that: The hinged component comprises a first mounting frame (26) mounted on the bottom of the closing plate (23), a first mounting rod (261) being fixedly connected between inner walls of the first mounting frame (26), and a first rotating sleeve rod (262) connected to the outer inclined plate (263) being rotatably connected to the outer periphery of the first mounting rod (261).

3. A concrete slump testing device according to claim 2, characterized in that: The side surface of the outer inclined plate (263) is provided with an inclined angle (264), and as the closing plate (23) rises, the gradually closing inclined angle (264) scrapes off the concrete on the surface of the inner inclined plate (32).

4. A concrete slump testing device according to claim 1, characterized in that: The closing assembly (30) comprises a plurality of second mounting frames (31) mounted on the bottom of the closing plate (23); second mounting rods (311) are connected between the inner walls of the second mounting frames (31); the outer periphery of the second mounting rods (311) is rotatably connected to a second rotating sleeve rod (312); one side of the second rotating sleeve rod (312) is connected to an inner inclined plate (32); a second movable groove (321) is formed on the inner wall of the inner inclined plate (32); and the second movable groove (321) is connected to the fixed plate (22) via a support member.

5. A concrete slump testing device according to claim 4, characterized in that: The support member comprises a second welding frame (33) fixedly mounted on the surface of the fixed plate (22); a second positioning rod (331) is fixedly connected between the inner walls of the second welding frame (33); the outer periphery of the second positioning rod (331) is rotatably connected to the second rotating rod (332); the inner wall of the second movable groove (321) is slidably connected to the second moving block (333); one side of the second moving block (333) is connected to the second connecting column (336) via a second connecting frame (334); the outer periphery of the second connecting column (336) is rotatably connected to the second rotating sleeve (335); and the second rotating sleeve (335) and the second rotating rod (332) are connected via a second supporting column (337).

6. A concrete slump testing device according to claim 1, characterized in that: A knocking assembly (40) is installed on the inner wall of the inner inclined plate (32), and the knocking assembly (40) comprises a contact block (41) fixedly connected to the inner wall of the inner inclined plate (32), and a mounting column (42) fixedly connected to the outer periphery of the connecting sleeve block (241), an inner cavity (43) is provided inside the mounting column (42), and a telescopic member is slidably connected to the inner wall of the inner cavity (43).

7. A concrete slump testing device according to claim 6, characterized in that: The telescopic member comprises a telescopic rod (44) sliding inside the inner cavity (43), a compression spring (45) being connected between the telescopic rod (44) and the mounting column (42), and a knocking block (46) abutting against the contact block (41) being connected to a side of the telescopic rod (44) away from the compression spring (45).

8. A concrete slump testing device according to claim 1, characterized in that: A rotating assembly (50) is installed at the bottom of the fixed plate (22). The rotating assembly (50) comprises a bearing (52) fixedly connected to the bottom of a plurality of sliding rods (24) and a limiting rod (51) fixedly installed inside the fixed column (21). A threaded groove (511) is provided on the outer circumference of the limiting rod (51). An abutting rod (521) abutting against the threaded groove (511) is fixedly connected to the inner ring of the bearing (52). A stirring member is connected to the bottom of the bearing (52). A lifting member is slidably connected inside the limiting rod (51).

9. A concrete slump testing device according to claim 8, characterized in that: The stirring member comprises a limit plate (53) connected to the bottom of the bearing (52); the outer wall of the limit plate (53) is slidably connected to a telescopic sleeve plate (54); and a plurality of stirring rods (55) are mounted on the outer periphery of the telescopic sleeve plate (54).

10. A concrete slump testing device according to claim 8, characterized in that: The lifting member comprises a lifting rod (56) slidably connected to the inside of the limiting rod (51); the bottom of the lifting rod (56) passes through the limiting rod (51) and is connected to the telescopic sleeve (54); a plurality of annular positioning holes (561) are provided inside the limiting rod (51); an inner groove (562) is provided inside the lifting rod (56); a positioning column (563) abutting against the positioning hole (561) is slidably connected to the inner wall of the inner groove (562); and a compression spring (564) is connected between the positioning column (563) and the inner groove (562).

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