Concrete slump tester

Abstract

The invention belongs to the technical field of concrete detection, and particularly relates to a concrete slump tester which comprises a workbench, a barrel is arranged on the inner side of the workbench, a lifting plate is fixedly mounted on the outer wall of the barrel, and a lifting assembly is arranged at the top of the workbench. The lifting assembly is used for driving the workbench to move in the vertical direction, and a measuring assembly is arranged on one side of the barrel and used for measuring the slump of concrete. When the cylinder is lifted, the lifting assembly can drive the cylinder body to move upwards through the lifting plate, under the action of the lifting assembly, it can be guaranteed that the cylinder body moves upwards in the vertical direction to be separated from concrete, it is guaranteed that the concrete evenly falls in the vertical direction under the action of self weight, and it is guaranteed that the slump value is accurately measured; the lifting assembly stops the ascending of the cylinder body, and at the moment, the slump value of the concrete can be rapidly measured through the measuring assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete detection, in particular to a concrete slump tester. Background Art

[0002] The concrete slump tester is a key device used to measure the workability (fluidity, cohesion and water retention) of concrete mixtures. It is widely used in construction, road engineering and prefabricated component production. Its core function is to simulate the collapse process of concrete under its own weight, quantitatively evaluate its working performance, and provide data support for construction quality control.

[0003] A patent application with publication number CN119043989A discloses a slump cone limiting device for concrete slump test. The invention places the cylinder on the experimental board, and the U-shaped plate 1 abuts against the limiting block to fix the cylinder. The U-shaped plate 1 is positioned by the rotating positioning assembly. When the cylinder is unfixed, the staff steps on the pedal lifting assembly, and the pedal lifting assembly drives the U-shaped plate 2 to move upward. The U-shaped plate 2 drives the connecting folding rod, the rotating positioning assembly, and the U-shaped plate 1 to move upward, so that the U-shaped plate 1 is disengaged from the limiting block. After disengagement, the rotating positioning assembly drives the connecting folding rod and the U-shaped plate 1 to rotate, so that the U-shaped plate 1 is located on one side of the cylinder, ensuring that the U-shaped plate 1 will not affect the lifting of the cylinder. There is no need for two people to cooperate in the slump test, which saves human resources.

[0004] In the prior art, when performing slump detection, the cylinder needs to be lifted vertically upward to separate the cylinder from the concrete, so as to measure the slump. In the above technical solution, although the cylinder is limited, when the U-shaped plate releases the limit on the cylinder, the cylinder still needs to be lifted. When lifting the cylinder, it is difficult to ensure that the cylinder can be lifted vertically away from the concrete, which may affect the collapse of the concrete and thus affect the detection results.

[0005] To this end, the present invention provides a concrete slump tester. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a concrete slump tester described in the present invention includes a workbench, a cylinder is provided on the inner side of the workbench, a lifting plate is fixedly installed on the outer wall of the cylinder, a lifting assembly is provided on the top of the workbench, the lifting assembly is used to drive the workbench to move in the vertical direction, and a measuring assembly is provided on one side of the cylinder, and the measuring assembly is used to measure the slump of concrete.

[0008] Preferably, the lifting assembly includes a vertical guide rail, which is fixedly installed on the top of the workbench, a drive motor is fixedly installed on the bottom of the workbench, a travel screw is fixedly installed on the output end of the drive motor, the travel screw passes through the workbench and is rotatably connected to the vertical guide rail, a lifting block is slidably installed on the inner wall of the vertical guide rail, the inner wall of the lifting block is threadedly connected to the outer wall of the travel screw, and the outer wall of the lifting block is fixedly connected to the outer wall of the lifting plate.

[0009] Preferably, the measuring assembly includes a hinge, which is fixedly mounted on the outer wall of the cylinder, a flip plate is rotatably mounted on the inner wall of the hinge, a torsion spring shaft A is fixedly mounted between the flip plate and the hinge, a measuring plate is slidably mounted on the inner wall of the flip plate, a scale mark is provided on the outer wall of the measuring plate, an elastic member is fixedly mounted between the measuring plate and the flip plate, a pressing plate is fixedly mounted on the outer wall of the measuring plate, a limit plate is fixedly mounted on the top of the hinge, and the limit plate conflicts with the flip plate.

[0010] Preferably, a detection platform is provided on the top of the workbench, and a rotating shaft is symmetrically fixedly installed on the inner wall of the detection platform. The detection platform is rotatably connected to the workbench through the rotating shaft. A U-shaped groove is provided on the top of the detection platform, and the cylinder is located on the inner side of the U-shaped groove. A lifting assembly is provided on the top of the lifting plate.

[0011] Preferably, the lifting assembly includes two support frames fixedly installed on the top of the lifting plate, a torsion spring shaft B is fixedly installed between the two support frames, a winding wheel is fixedly installed on the outer wall of the torsion spring shaft B, a connecting rope is wrapped around the surface of the winding wheel, and the end of the connecting rope away from the winding wheel is fixedly connected to the detection platform.

[0012] Preferably, a cleaning scraper is slidably mounted on the inner wall of the U-shaped groove, a push-pull plate is fixedly mounted on the outer wall of the cleaning scraper, the outer wall of the push-pull plate is slidably connected to the inner wall of the inspection table, and a transmission assembly is provided on the top of the workbench.

[0013] Preferably, the transmission assembly includes a gantry fixedly mounted on the top of the workbench, an arc-shaped guide rail is fixedly mounted on the inner side of the gantry, a connecting frame is fixedly mounted on the end of the push-pull plate away from the cleaning scraper, a roller is rotatably mounted on the inner wall of the connecting frame, and the outer wall of the roller is slidably connected to the inner wall of the arc-shaped guide rail.

[0014] Preferably, a plurality of vertical poles are fixedly mounted on the top of the cleaning scraper, a water pipe is fixedly mounted between the vertical poles, a plurality of nozzles are fixedly mounted on the inner wall of the water pipe, and a connecting hose is fixedly mounted on one end of the water pipe.

[0015] Preferably, support legs are fixedly installed at the four corners of the bottom of the workbench, and a base is fixedly installed between the bottoms of the support legs.

[0016] Preferably, a positioning plate is fixedly mounted on the top of the base, a collection box is slidably mounted on the top of the base and on the inner side of the positioning plate, and a handle is fixedly mounted on the outer wall of the collection box.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The concrete slump tester described in the present invention has a lifting assembly that drives the cylinder to move upward through the lifting plate when the cylinder is lifted. Under the action of the lifting assembly, the cylinder can be moved up in the vertical direction to separate from the concrete, ensuring that the concrete falls evenly in the vertical direction under the action of its own weight, thereby ensuring accurate measurement of the slump value.

[0019] 2. The concrete slump tester described in the present invention has a lifting assembly that stops the cylinder from rising when the bottom of the cylinder is higher than the top of the concrete. At this time, the slump value of the concrete can be quickly measured through the measuring assembly. On the one hand, it is convenient to carry out the measurement work, and on the other hand, the concrete can be measured in a timely manner to ensure the effectiveness of the measurement.

[0020] 3. The concrete slump tester described in the present invention, when the testing work is completed, the lifting assembly continues to drive the lifting plate to move upward. When the lifting plate moves upward, it will drive the testing platform to rotate around the rotating shaft through the pulling assembly, so that the testing platform is in an inclined state. After the testing platform is tilted, gravity can be used to make the concrete slide more quickly and thoroughly, reducing the difficulty and workload of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the workbench of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the detection platform of the present invention;

[0025] Figure 4 is a cross-sectional view of the flip plate structure of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the lifting plate of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the cleaning scraper of the present invention;

[0028] Figure 7 This is a structural diagram of the arc guide rail of the present invention;

[0029] In the figure: 1. workbench; 2. cylinder; 3. lifting plate; 4. vertical guide rail; 5. driving motor; 6. travel screw; 7. lifting block; 8. hinge; 9. flip plate; 10. torsion spring shaft A; 11. measuring plate; 12. elastic member; 13. pressing plate; 14. limit plate; 15. testing table; 16. rotating shaft; 17. U-shaped groove; 18. supporting frame; 19. torsion spring shaft B; 20. winding wheel; 21. connecting rope; 22. cleaning scraper; 23. push-pull plate; 24. gantry; 25. curved guide rail; 26. connecting frame; 27. roller; 28. vertical pole; 29. ​​water pipe; 30. nozzle; 31. connecting hose; 32. supporting leg; 33. base; 34. positioning plate; 35. collection box; 36. handle. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figures 1 to 4 As shown, a concrete slump tester according to an embodiment of the present invention comprises a workbench 1, a cylinder 2 is provided on the inner side of the workbench 1, a lifting plate 3 is fixedly installed on the outer wall of the cylinder 2, a lifting assembly is provided on the top of the workbench 1, the lifting assembly is used to drive the workbench 1 to move in the vertical direction, a measuring assembly is provided on one side of the cylinder 2, and the measuring assembly is used to measure the slump of concrete; when performing the concrete slump test, the concrete to be tested is placed in layers on the inner side of the cylinder 2 and rammed separately, and then the top of the concrete is scraped flat and the cylinder is lifted. When lifting the cylinder, the lifting assembly will drive the cylinder 2 to move upward through the lifting plate 3. Under the action of the lifting assembly, the cylinder 2 can be moved up in the vertical direction to separate from the concrete, ensuring that the concrete falls evenly in the vertical direction under the action of its own weight, ensuring accurate measurement of the slump value. When the bottom of the cylinder 2 is higher than the top of the concrete, the lifting assembly will stop the cylinder 2 from rising. At this time, the slump value of the concrete can be quickly measured through the measuring assembly, which is convenient for the measurement work on the one hand, and can measure the concrete in time on the other hand to ensure the effectiveness of the measurement.

[0032] like Figures 1 to 3As shown, the lifting assembly includes a vertical guide rail 4, which is fixedly mounted on the top of the workbench 1, and a driving motor 5 is fixedly mounted on the bottom of the workbench 1. A traveling screw 6 is fixedly mounted on the output end of the driving motor 5, and the traveling screw 6 passes through the workbench 1 and is rotatably connected to the vertical guide rail 4. A lifting block 7 is slidably mounted on the inner wall of the vertical guide rail 4, and the inner wall of the lifting block 7 is threadedly connected to the outer wall of the traveling screw 6, and the outer wall of the lifting block 7 is fixedly connected to the outer wall of the lifting plate 3; when the cylinder is lifting, the driving motor 5 is started, and the driving motor 5 will drive the traveling screw 6 to rotate. When the traveling screw 6 rotates, it will cooperate with the thread of the lifting block 7 to make the lifting block 7 move up. When the lifting block 7 moves up, it will drive the lifting plate 3 connected to it to follow and move up. When the lifting plate 3 moves up, it will drive the cylinder body 2 to move up, thereby realizing the cylinder lifting work and ensuring that the cylinder body 2 can move in the vertical direction when the cylinder is lifted.

[0033] like Figures 1 to 4 As shown, the measuring assembly includes a hinge 8, which is fixedly mounted on the outer wall of the cylinder 2, a flip plate 9 is rotatably mounted on the inner wall of the hinge 8, a torsion spring shaft A10 is fixedly mounted between the flip plate 9 and the hinge 8, a measuring plate 11 is slidably mounted on the inner wall of the flip plate 9, a scale mark is provided on the outer wall of the measuring plate 11, an elastic member 12 is fixedly mounted between the measuring plate 11 and the flip plate 9, a pressing plate 13 is fixedly mounted on the outer wall of the measuring plate 11, a limit plate 14 is fixedly mounted on the top of the hinge 8, and the limit plate 14 conflicts with the flip plate 9; when the cylinder 2 moves up, the construction workers squeeze the pressing plate 13 by hand, and the flip plate 9 will rotate around the torsion spring shaft A10 together with the measuring plate 11, thereby moving the cylinder 2 upward. When the turning plate 9 is rotated to the vertical state, the section of the measuring plate 11 perpendicular to the turning plate 9 will rotate to the horizontal state and fit against the bottom surface of the cylinder 2. At this time, the measuring plate 11 is restricted by the cylinder 2 so that the turning plate 9 can no longer rotate. Then the construction personnel press the pressing plate 13 downward, and the pressing plate 13 will drive the measuring plate 11 to slide downward from the inner side of the turning plate 9. The elastic member 12 will be stretched. When the measuring plate 11 slides to the top of the concrete, the slump value of the concrete can be quickly measured by observing the scale mark on the measuring plate 11, thereby achieving the effect of fast measurement. When the pressing plate 13 is released, the turning plate 9 and the measuring plate 11 will be reset under the action of the torsion spring shaft A10 and the elastic member 12.

[0034] like Figures 1 to 3The top of the testing platform 1 is provided with a testing platform 15, and the inner wall of the testing platform 15 is symmetrically fixedly installed with a rotating shaft 16. The testing platform 15 is rotatably connected to the working platform 1 through the rotating shaft 16. A U-shaped groove 17 is provided on the top of the testing platform 15, and the cylinder 2 is located on the inner side of the U-shaped groove 17. A lifting assembly is provided on the top of the lifting plate 3; a U-shaped groove 17 is provided on the testing platform 15. When the testing work is carried out, the concrete will be placed between the U-shaped groove 17 and the cylinder 2. When the cylinder 2 is raised, the concrete collapse will spread to the surrounding areas inside the U-shaped groove 17, thereby preventing the concrete from being scattered to other areas of the testing platform 15, thereby keeping the testing environment clean and orderly. When the testing work is completed, the lifting assembly continues to drive the lifting plate 3 to move up. When the lifting plate 3 moves up, it will drive the testing platform 15 to rotate around the rotating shaft 16 through the lifting assembly, so that the testing platform 15 is in an inclined state. After the testing platform 15 is tilted, gravity can be used to make the concrete slide more quickly and thoroughly, reducing the difficulty and workload of cleaning.

[0035] like Figure 3 and Figure 5 As shown, the lifting assembly includes two support frames 18 fixedly mounted on the top of the lifting plate 3, a torsion spring shaft B19 fixedly mounted between the two support frames 18, a winding wheel 20 fixedly mounted on the outer wall of the torsion spring shaft B19, a connecting rope 21 wrapped around the surface of the winding wheel 20, and the end of the connecting rope 21 away from the winding wheel 20 is fixedly connected to the detection platform 15; when the drum is lifted, the lifting plate 3 will drive the winding wheel 20 to move upward through the support frames 18 and the torsion spring shaft B19. During this process, due to the heavy weight of the detection platform 15, the force of the torsion spring shaft B19 cannot pull the detection platform 15, so the winding wheel 20 will rotate to release the connecting rope 21, that is, when the drum is lifted, the detection platform 15 will not rotate. When the drum lifting work is completed, the connecting rope 21 wrapped around the winding wheel 20 is completely released. Therefore, when the lifting plate 3 continues to rise, the connecting rope 21 will pull the detection platform 15 to rotate, thereby achieving the effect of automatically flipping the detection platform 15.

[0036] like Figures 5 to 7As shown, a cleaning scraper 22 is slidably installed on the inner wall of the U-shaped groove 17, and a push-pull plate 23 is fixedly installed on the outer wall of the cleaning scraper 22. The outer wall of the push-pull plate 23 is slidably connected to the inner wall of the testing platform 15, and a transmission assembly is provided on the top of the workbench 1; when the testing platform 15 rotates, the push-pull plate 23 will move in the direction of the cleaning scraper 22 under the action of the transmission assembly, and the push-pull plate 23 will push the cleaning scraper 22 to slide on the inner side of the U-shaped groove 17 when moving. When the cleaning scraper 22 moves on the inner side of the U-shaped groove 17, the concrete in the U-shaped groove 17 can be pushed out from one side of the testing platform 15, thereby achieving the effect of automatically cleaning the U-shaped groove 17, and the cleaning work can be completed quickly, which greatly shortens the interval time between each inspection and improves the inspection efficiency. By automatically cleaning the concrete, it is possible to prevent the concrete of the last inspection from remaining in the U-shaped groove 17, prevent the newly inspected concrete from mixing with it, and avoid the inspection result from not truly reflecting the performance of the current concrete.

[0037] like Figures 1 to 3 and Figures 5 to 7 As shown, the transmission assembly includes a gantry 24 fixedly mounted on the top of the workbench 1, an arc-shaped guide rail 25 fixedly mounted on the inner side of the gantry 24, a connecting frame 26 fixedly mounted on the end of the push-pull plate 23 away from the cleaning scraper 22, a roller 27 rotatably mounted on the inner wall of the connecting frame 26, and the outer wall of the roller 27 is slidably connected to the inner wall of the arc-shaped guide rail 25; when the inspection table 15 is turned over, the push-pull plate 23 will rotate with the inspection table 15, and when the push-pull plate 23 rotates, it will drive the roller 27 together through the connecting frame 26. Rotation, since the roller 27 is located on the inner side of the arc-shaped guide rail 25, the roller 27 will be restricted by the arc-shaped guide rail 25 when rotating. When the roller 27 rotates inside the arc-shaped guide rail 25, the distance between it and the rotating shaft 16 will gradually become smaller, so that the push-pull plate 23 pushes the cleaning scraper 22 to slide in the U-shaped groove 17, achieving the effect of automatic cleaning. When the detection table 15 rotates, the cleaning scraper 22 will reset, so when the detection table 15 rotates back and forth, the cleaning scraper 22 will slide back and forth in the U-shaped groove 17.

[0038] like Figures 1 to 3 and Figure 6As shown, a number of vertical poles 28 are fixedly installed on the top of the cleaning scraper 22, and a water pipe 29 is fixedly installed between the vertical poles 28. A number of nozzles 30 are fixedly installed on the inner wall of the water pipe 29, and a connecting hose 31 is fixedly installed on one end of the water pipe 29; the end of the connecting hose 31 away from the water pipe 29 is connected to the water supply component, and the water supply component can be composed of a water tank and a water pump. When the cleaning scraper 22 pushes the concrete in the U-shaped groove 17 out, the water in the water tank is transported to the water pipe 29 through the connecting hose 31 by the water pump. After entering the water pipe 29, the water will be sprayed toward the inner wall of the U-shaped groove 17 through the nozzle 30. At the same time, the cleaning scraper 22 moves to drive the nozzle 30 to move together. The nozzle 30 flushes the U-shaped groove 17 during the movement, and cleans up some fine concrete particles or viscous concrete slurry that may still remain in the U-shaped groove 17, ensuring that the entire U-shaped groove 17 is thoroughly cleaned.

[0039] like Figure 1 As shown, support legs 32 are fixedly installed at the four corners of the bottom of the workbench 1, and a base 33 is fixedly installed between the bottoms of the support legs 32; the device is supported by the support legs 32 so that the device is at a suitable height to facilitate the use of the device, and the base 33 supports the entire device to ensure the overall stability of the device.

[0040] like Figure 1 As shown, a positioning plate 34 is fixedly installed on the top of the base 33, and a collecting box 35 is slidably installed on the top of the base 33 and on the inner side of the positioning plate 34, and a handle 36 is fixedly installed on the outer wall of the collecting box 35; by arranging the collecting box 35 under one side of the testing platform 15, the concrete pushed out of the U-shaped groove 17 and the flowing clean water can enter the collecting box 35, so that the concrete and clean water are collected and convenient for subsequent processing. The collecting box 35 is positioned by the positioning plate 34, thereby ensuring that the concrete and clean water can enter the collecting box 35.

[0041] Working principle: When conducting concrete slump test, the concrete to be tested is placed in layers on the inner side of the cylinder 2 and rammed separately. After that, the top of the concrete is scraped flat and the cylinder is lifted. When lifting the cylinder, the lifting component will drive the cylinder 2 to move upward through the lifting plate 3. Under the action of the lifting component, the cylinder 2 can be moved up in the vertical direction and separated from the concrete, ensuring that the concrete falls evenly in the vertical direction under the action of its own weight, ensuring accurate measurement of the slump value. When the bottom of the cylinder 2 is higher than the top of the concrete, the lifting component will stop the cylinder 2 from rising. At this time, the slump value of the concrete can be quickly measured through the measuring component. On the one hand, it is convenient to carry out the measurement work, and on the other hand, the concrete can be measured in time to ensure the effectiveness of the measurement.

[0042] When the cylinder is lifted, the driving motor 5 is started, and the driving motor 5 drives the traveling screw 6 to rotate. When the traveling screw 6 rotates, it cooperates with the thread of the lifting block 7 to make the lifting block 7 move up. When the lifting block 7 moves up, it drives the lifting plate 3 connected to it to move up. When the lifting plate 3 moves up, it drives the cylinder 2 to move up, thereby realizing the cylinder lifting work and ensuring that the cylinder 2 can move in the vertical direction when the cylinder is lifted. After the cylinder 2 moves up, the construction workers squeeze the pressing plate 13 with their hands, and the flip plate 9 will rotate around the torsion spring axis A10 together with the measuring plate 11, thereby approaching the cylinder 2. When the flip plate 9 rotates to a vertical state, The section of the measuring plate 11 that is perpendicular to the flip plate 9 will rotate to a horizontal position and fit against the bottom surface of the cylinder 2. At this time, the measuring plate 11 is restricted by the cylinder 2, so that the flip plate 9 can no longer rotate. Then the construction worker presses the pressing plate 13 downward, and the pressing plate 13 will drive the measuring plate 11 to slide downward from the inner side of the flip plate 9. The elastic member 12 will be stretched. When the measuring plate 11 slides to the top of the concrete, the slump value of the concrete can be quickly measured by observing the scale mark on the measuring plate 11, thereby achieving a fast measurement effect. When the pressing plate 13 is released, the flip plate 9 and the measuring plate 11 will be reset under the action of the torsion spring shaft A10 and the elastic member 12.

[0043] A U-shaped groove 17 is provided on the inspection platform 15. When the inspection work is carried out, concrete will be placed between the U-shaped groove 17 and the cylinder 2. When the cylinder 2 is raised, the concrete collapse will spread to the surrounding inside the U-shaped groove 17, thereby preventing the concrete from being scattered to other areas of the inspection platform 15, thereby keeping the inspection environment clean and orderly. When the inspection work is completed, the lifting component continues to drive the lifting plate 3 to move upward. When the lifting plate 3 moves upward, it will drive the inspection platform 15 to rotate around the rotating shaft 16 through the pulling component, so that the inspection platform 15 is in an inclined state. After the inspection platform 15 is tilted, gravity can be used to make the concrete slide more quickly and thoroughly, reducing The difficulty and workload of cleaning are reduced. When the drum lifting work is carried out, the lifting plate 3 will drive the winding wheel 20 to move upward through the support frame 18 and the torsion spring shaft B19. During this process, due to the heavy weight of the detection platform 15, the force of the torsion spring shaft B19 cannot pull the detection platform 15, so the winding wheel 20 will rotate to release the connecting rope 21, that is, when the drum lifting work is carried out, the detection platform 15 will not rotate. When the drum lifting work is completed, the connecting rope 21 wrapped around the winding wheel 20 is completely released. Therefore, when the lifting plate 3 continues to rise, the connecting rope 21 will pull the detection platform 15 to rotate, thereby achieving the effect of automatically flipping the detection platform 15.

[0044] When the inspection table 15 rotates, the push-pull plate 23 will move in the direction of the cleaning scraper 22 under the action of the transmission component. When the push-pull plate 23 moves, the cleaning scraper 22 will be pushed to slide on the inner side of the U-shaped groove 17. When the cleaning scraper 22 moves on the inner side of the U-shaped groove 17, the concrete in the U-shaped groove 17 can be pushed out from one side of the inspection table 15, thereby achieving the effect of automatically cleaning the U-shaped groove 17, and the cleaning work can be completed quickly, which greatly shortens the interval time between each inspection and improves the inspection efficiency. By automatically cleaning the concrete, it is possible to prevent the concrete of the last inspection from remaining in the U-shaped groove 17, prevent the newly inspected concrete from mixing with it, and avoid that the inspection result cannot be truly reflected. Reflecting the current performance of concrete, when the inspection platform 15 is flipped, the push-pull plate 23 will rotate with the inspection platform 15. When the push-pull plate 23 rotates, it will drive the roller 27 to rotate together through the connecting frame 26. Since the roller 27 is located on the inner side of the arc guide rail 25, the roller 27 will be restricted by the arc guide rail 25 when rotating. When the roller 27 rotates on the inner side of the arc guide rail 25, the distance between it and the rotating shaft 16 will gradually become smaller, so that the push-pull plate 23 pushes the cleaning scraper 22 to slide in the U-shaped groove 17, achieving the effect of automatic cleaning. When the inspection platform 15 rotates, the cleaning scraper 22 will reset. Therefore, when the inspection platform 15 rotates back and forth, the cleaning scraper 22 will slide back and forth in the U-shaped groove 17.

[0045] The end of the connecting hose 31 away from the water pipe 29 is connected to the water supply assembly, which can be composed of a water tank and a water pump. When the cleaning scraper 22 pushes the concrete in the U-shaped groove 17 out, the water in the water tank is transported to the water pipe 29 through the connecting hose 31 by the water pump. After entering the water pipe 29, the water will be sprayed toward the inner wall of the U-shaped groove 17 through the nozzle 30. At the same time, the cleaning scraper 22 moves to drive the nozzle 30 to move together. The nozzle 30 flushes the U-shaped groove 17 during the movement, cleaning some fine concrete particles or viscous concrete slurry that may still remain in the U-shaped groove 17, ensuring that the entire U-shaped groove 17 is thoroughly cleaned. By arranging a collection box 35 at the bottom of one side of the testing platform 15, the concrete pushed out of the U-shaped groove 17 and the flowing clean water can enter the collection box 35, so that the concrete and clean water are collected for subsequent processing. The collection box 35 is positioned by the positioning plate 34 to ensure that the concrete and clean water can enter the collection box 35.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete slump tester, comprising a workbench, characterized in that: A cylinder is provided on the inner side of the workbench, a lifting plate is fixedly installed on the outer wall of the cylinder, a lifting assembly is provided on the top of the workbench, and the lifting assembly is used to drive the workbench to move in the vertical direction. A measuring assembly is provided on one side of the cylinder, and the measuring assembly is used to measure the slump of concrete.

2. A concrete slump tester according to claim 1, characterized in that: The lifting assembly includes a vertical guide rail, which is fixedly installed on the top of the workbench. A driving motor is fixedly installed on the bottom of the workbench. A traveling screw is fixedly installed on the output end of the driving motor. The traveling screw passes through the workbench and is rotatably connected to the vertical guide rail. A lifting block is slidably installed on the inner wall of the vertical guide rail. The inner wall of the lifting block is threadedly connected to the outer wall of the traveling screw, and the outer wall of the lifting block is fixedly connected to the outer wall of the lifting plate.

3. A concrete slump tester according to claim 2, characterized in that: The measuring assembly includes a hinge, which is fixedly mounted on the outer wall of the cylinder, a flip plate is rotatably mounted on the inner wall of the hinge, a torsion spring shaft A is fixedly mounted between the flip plate and the hinge, a measuring plate is slidably mounted on the inner wall of the flip plate, a scale mark is provided on the outer wall of the measuring plate, an elastic member is fixedly mounted between the measuring plate and the flip plate, a pressing plate is fixedly mounted on the outer wall of the measuring plate, a limit plate is fixedly mounted on the top of the hinge, and the limit plate is in conflict with the flip plate.

4. A concrete slump tester according to claim 3, characterized in that: A detection platform is provided on the top of the workbench, and a rotating shaft is symmetrically fixedly installed on the inner wall of the detection platform. The detection platform is rotatably connected to the workbench through the rotating shaft. A U-shaped groove is provided on the top of the detection platform, and the cylinder is located on the inner side of the U-shaped groove. A lifting assembly is provided on the top of the lifting plate.

5. A concrete slump tester according to claim 4, characterized in that: The lifting assembly includes two support frames fixedly installed on the top of the lifting plate, a torsion spring shaft B is fixedly installed between the two support frames, a winding wheel is fixedly installed on the outer wall of the torsion spring shaft B, a connecting rope is wrapped around the surface of the winding wheel, and the end of the connecting rope away from the winding wheel is fixedly connected to the detection platform.

6. A concrete slump tester according to claim 5, characterized in that: A cleaning scraper is slidably mounted on the inner wall of the U-shaped groove, a push-pull plate is fixedly mounted on the outer wall of the cleaning scraper, the outer wall of the push-pull plate is slidably connected to the inner wall of the detection table, and a transmission assembly is provided on the top of the workbench.

7. A concrete slump tester according to claim 6, characterized in that: The transmission assembly includes a gantry fixedly mounted on the top of the workbench, an arc-shaped guide rail fixedly mounted on the inner side of the gantry, a connecting frame fixedly mounted on the end of the push-pull plate away from the cleaning scraper, a roller rotatably mounted on the inner wall of the connecting frame, and the outer wall of the roller is slidably connected to the inner wall of the arc-shaped guide rail.

8. A concrete slump tester according to claim 7, characterized in that: A plurality of vertical poles are fixedly installed on the top of the cleaning scraper, a water pipe is fixedly installed between the vertical poles, a plurality of nozzles are fixedly installed on the inner wall of the water pipe, and a connecting hose is fixedly installed at one end of the water pipe.

9. A concrete slump tester according to claim 8, characterized in that: Support legs are fixedly installed at the four corners of the bottom of the workbench, and a base is fixedly installed between the bottoms of the support legs.

10. A concrete slump tester according to claim 9, characterized in that: A positioning plate is fixedly installed on the top of the base, a collection box is slidably installed on the top of the base and on the inner side of the positioning plate, and a handle is fixedly installed on the outer wall of the collection box.

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