A high-precision concrete slump measuring device and a method of using the same

Abstract

The application discloses a kind of high-precision measuring device of concrete slump and its using method, and the application relates to concrete slump measurement technical field, including support and control module, the outer wall of the support is fixedly connected with driving motor, the outer wall of the support is rotatably connected with shaft by bearing, the output end of the driving motor is fixedly connected with one side of shaft, the outside of the shaft is provided with transmission belt, the driving motor is controlled by control module, the application drives lifting assembly by control module, makes slump cylinder be vertically lifted at fixed rate under the precision transmission of lifting motor, threaded rod and support arm mechanism etc., and is combined with vibration motor auxiliary, completely eliminates the difference of manual operation in lifting cylinder speed, perpendicularity and shaking, with the characteristics of strong practicality and realizing objective accurate measurement of multidimensional data.

Description

Technical Field

[0001] This invention relates to the field of concrete slump measurement technology, specifically to a high-precision concrete slump measurement device and its usage method. Background Technology

[0002] As the world's most widely used building material, concrete's workability—that is, the ease of handling fresh concrete during mixing, transportation, and pouring without segregation or bleeding—directly affects the quality and durability of engineering structures. The slump test is the most commonly used and classic method for on-site evaluation of concrete workability. By measuring the vertical height difference of concrete falling due to its own weight after a standard slump cone is vertically removed, its fluidity, cohesiveness, and water retention can be intuitively judged. However, in practical applications, especially in construction site quality control, commercial concrete plant factory inspection, and training scenarios that require multiple, rapid, and comparative tests, the current traditional slump test methods have revealed the following significant technical shortcomings: The operation process is highly dependent on human experience, with low standardization and large human error. The entire experimental process, including the filling and tamping of the slump cone, and especially the final vertical lifting, is completely done manually by the operators. Different operators have different understandings and executions of the "vertical, stable, and rapid" lifting requirements. The speed of lifting, whether it is strictly vertical, and whether there is rotation or shaking will directly affect the slump pattern of the concrete, thus introducing significant random errors. This makes it difficult to compare the test results of different operators or the same operator in different batches, and the reliability and repeatability of the data are hard to guarantee. The experiment is inefficient and cannot meet the needs of continuous and rapid testing. After completing an experiment, the collapsed concrete needs to be cleaned up and the position of the collapse cylinder needs to be reset for the next experiment. This cleaning and resetting process is usually done entirely manually, which is time-consuming and labor-intensive. When multiple parallel experiments or continuous monitoring of concrete performance changes are required, the long preparation time not only reduces efficiency, but may also lead to inaccurate judgment of changes in concrete workability due to time delays. The measurement dimension is singular, the amount of information is insufficient, and there is subjective judgment involved. Traditional methods can only obtain the single vertical height data of "slump". However, the final workability of concrete is not only reflected in the height, but also in its horizontal diffusion diameter and edge shape, which can reflect its cohesiveness and fluidity. At present, the measurement of slump mostly relies on manual measurement with steel rulers, which has parallax and selection bias, and is highly subjective. At the same time, there is a lack of ability to simultaneously obtain key parameters such as concrete density and bleeding rate. In summary, existing concrete slump testing methods have significant shortcomings in terms of operational standardization, process efficiency, data multidimensionality, and measurement objectivity and accuracy. Therefore, there is an urgent need for an integrated high-precision measuring device that can integrate automated operation, standardized processes, multidimensional information acquisition, and overcome environmental interference to solve the aforementioned long-standing technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide a high-precision concrete slump measuring device and its usage method to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-precision concrete slump measuring device, including a support and a control module, wherein a drive motor is fixedly connected to the outer wall of the support, and a rotating shaft is rotatably connected to the outer wall of the support through a bearing, wherein the output end of the drive motor is fixedly connected to one side of the rotating shaft, and a transmission belt is provided on the outer side of the rotating shaft, and the drive motor is controlled by the control module to drive the rotating shaft and the transmission belt to rotate. A slumping cylinder is provided on the upper side of the transmission belt, and a flushing assembly is provided on the side wall of the support. The flushing assembly is used to spray water to clean the drive belt; A fixed beam is fixedly connected to the upper side of the bracket, and a lifting component and a detection component are provided on the upper side of the fixed beam; The lifting assembly includes a transmission assembly and a lifting motor, the lifting motor being used to drive the collapse cylinder to move up and down. The detection component includes a first camera and a second camera. The first camera is used to detect the projected area of ​​the concrete after it collapses, and the second camera is used to detect the height of the concrete collapse. A weighing component is also provided at the lower side of the middle of the upper surface of the transmission belt; The weighing component includes a connecting component and a pressure detection module, which is used to detect the weight of the concrete.

[0005] According to the above technical solution, the bracket is provided with a plurality of rotating shafts, which are driven to rotate synchronously by a transmission belt, and the transmission belt is made of a water-permeable material and is arranged in an inverted trapezoidal shape.

[0006] According to the above technical solution, the flushing assembly includes a water pump, the output end of the water pump is fixedly connected to a connecting pipe, the distal end of the connecting pipe is fixedly connected to a drain pipe, the outer walls of both ends of the drain pipe are fixedly connected to the outer wall of the bracket, and a plurality of nozzles are provided on the drain pipe.

[0007] According to the above technical solution, the water pump is electrically connected to the control module, and the control module controls the water pump to supply water to the inside of the drain pipe, and several of the nozzles face the lower inclined surface of the transmission belt.

[0008] According to the above technical solution, the transmission assembly further includes a connecting buckle. Two connecting buckles are provided on the outer wall of the collapse cylinder. The outer side of the connecting buckle is fixedly connected to the outer wall of the collapse cylinder. A support arm is provided in the middle of the connecting buckle. Both the support arm and the connecting buckle have an insertion port. A fixing buckle is inserted into the insertion port. A threaded rod is rotatably connected to the upper right end of the right support arm through a bearing. The upper end of the threaded rod passes through the fixed beam and extends to the upper side of the fixed beam. A threaded toothed ring is threadedly connected to the outer wall of the upper end of the threaded rod. The lower surface of the threaded toothed ring is rotatably connected to the upper surface of the fixed beam through a bearing. The outer wall of the threaded toothed ring is drivenly connected to the output end of the lifting motor through a bevel gear. The lower side of the lifting motor is fixedly connected to the upper side of the fixed beam.

[0009] According to the above technical solution, a vibration motor is fixedly connected to the upper surface of the left arm, and a slide rod is fixedly connected to the upper side of the left end of the left arm. The upper end of the slide rod passes through the fixed beam and extends to the upper side of the fixed beam. The outer wall of the slide rod is slidably connected to the inner wall of the fixed beam.

[0010] According to the above technical solution, the lifting motor is electrically connected to the control module, and the lifting motor is used to drive the threaded gear ring to rotate through the bevel gear. The vibration motor is electrically connected to the control module, and the vibration motor is used to generate vibration and transmit it to the collapse cylinder through the support arm and connecting buckle.

[0011] According to the above technical solution, the detection assembly further includes a top frame, the upper side of the fixed beam is fixedly connected to the lower end of the top frame, the middle part of the lower side of the top frame is fixedly connected to the upper side of the first camera, a fixed rod is fixedly connected to the right side of the fixed beam, the middle part of the fixed rod is fixedly connected to the outer wall of the second camera, a scale plate is fixedly connected to the left side of the fixed beam, the first camera is located on the upper side of the middle of the collapse tube, the second camera is located on the right side of the middle of the collapse tube, and the scale plate is located on the left side of the middle of the collapse tube.

[0012] According to the above technical solution, the connecting component includes a mounting plate, the two ends of which are fixedly connected to the outer wall of the bracket. A mounting groove is provided on the upper side of the mounting plate, and the pressure detection module is located inside the lower side of the mounting groove. A plurality of drainage outlets penetrating the upper and lower sides of the mounting plate are provided on the lower surface of the inner wall of the mounting groove. A base plate is placed inside the mounting groove. The upper surface of the base plate contacts the outer wall of the transmission belt, and the lower side of the base plate contacts the upper surface of the pressure detection module. The diameter of the base plate is larger than the lower diameter of the collapse cylinder.

[0013] A method for using a high-precision concrete slump measuring device includes the following steps: Step 1: Place the device on a stable workbench and power it on. The control module will perform a self-test, and the pressure detection module in the weighing component will automatically set to zero. Ensure that the water source for the rinsing component is connected, and the slump cylinder is securely placed on the base plate above the transmission belt. Step 2: According to the standard specifications, concrete is filled into the slump cone in three layers and compacted. After filling is completed, the control module records the reading of the pressure detection module at this time. The difference between this value and the tare weight in Step 1 is the net weight of the concrete. The system can automatically calculate the initial apparent density of the concrete based on this. Step 3: The operator issues a "start test" command through the control module, the lifting component starts, and the lifting motor lifts the collapse cylinder vertically and smoothly at a preset constant speed through the threaded rod and support arm and other transmission mechanisms. Step 4: After the concrete slump stabilizes, the detection component works automatically. The first camera located above takes a top view of the concrete top surface to calculate the slump expansion area, and the second camera located on the side takes a view of the concrete side shape. By comparing it with the scale plate, the slump value is automatically identified and calculated. During this process, the water exuded from the concrete seeps down through the conveyor belt and the drainage outlets on the bottom plate to reduce the reflection of light on the surface and ensure image quality. Step 5: After the measurement data is recorded by the system, the control module starts the drive motor, which drives the transmission belt to rotate and transport the collapsed waste concrete away from the test area. Then, the flushing component is started, and the water pump sprays water evenly onto the surface of the transmission belt through the nozzles for automatic cleaning, preparing for the next experiment. Step Six: The control module or the connected host computer software will summarize and store all the data from this experiment, including slump, spread, concrete weight, estimated density, etc., and can generate a standardized test report.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention drives the lifting assembly through a control module, enabling the slump cylinder to be vertically lifted at a fixed rate under the precise transmission of mechanisms such as the lifting motor, threaded rod, and support arm. Combined with the assistance of a vibration motor, it completely eliminates the differences in lifting speed, verticality, and vibration caused by manual operation, ensuring the standardization and uniformity of the core experimental steps from the source, and greatly improving the accuracy and repeatability of the data.

[0015] 2. The collapsed waste material is automatically transported away by the conveyor belt, and then the water pump and nozzle of the flushing component immediately perform high-pressure flushing on the belt surface. This design transforms the time-consuming and labor-intensive manual cleaning work into an automated assembly line operation, which greatly shortens the batch test interval, solves the time waste caused by resetting the test position and cleaning operation, and significantly improves the experimental efficiency.

[0016] 3. By using the first and second cameras to simultaneously acquire images of the concrete slump shape from the top and side, and by automatically analyzing them with reference to the scale plate, the two key parameters of slump value and diffusion area can be accurately obtained at the same time. This non-contact measurement method eliminates the subjective error of manual visual inspection and realizes the digitization, objectification and multidimensionality of the test results.

[0017] 4. The pressure detection module integrated into the weighing component can automatically weigh the material before and after loading. It can quickly calculate the initial density of the concrete by using the net weight and the fixed volume of the slump cone, and can track the mass change after slumping and settling. This provides real-time, quantitative data support for evaluating concrete mix proportions, water retention and bleeding characteristics, which is impossible with traditional methods. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure on the right side of the present invention; Figure 2 This is a schematic diagram of the structure on the left side of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the present invention; Figure 4 This is a schematic diagram of the rinsing assembly structure of the present invention; Figure 5 This is a schematic diagram of the weighing component structure of the present invention; Figure 6 This is a schematic diagram of the component structure of the present invention; Figure 7 This is a schematic diagram of the lifting component structure of the present invention; Figure 8 This is a schematic diagram of the fixing buckle structure of the present invention; In the diagram: 1. Support frame; 2. Drive motor; 3. Rotating shaft; 4. Transmission belt; 5. Slump cylinder; 6. Flushing assembly; 7. Fixed beam; 8. Lifting assembly; 9. Detection assembly; 10. Weighing assembly; 601. Water pump; 602. Connecting pipe; 603. Drain pipe; 604. Nozzle; 801. Lifting motor; 802. Connecting buckle; 803. Support arm; 804. Fixing buckle; 805. Threaded rod; 806. Threaded toothed ring; 807. Slide rod; 808. Vibration motor; 901. Top frame; 902. First camera; 903. Fixed rod; 904. Second camera; 905. Scale plate; 101. Mounting plate; 102. Pressure detection module; 103. Base plate; 104. Drain outlet. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-8 The present invention provides a technical solution: a high-precision concrete slump measuring device, including a support 1 and a control module. A drive motor 2 is fixedly connected to the outer wall of the support 1, and a rotating shaft 3 is rotatably connected to the outer wall of the support 1 through a bearing. The output end of the drive motor 2 is fixedly connected to one side of the rotating shaft 3. A transmission belt 4 is provided on the outer side of the rotating shaft 3. The drive motor 2 is controlled by the control module to drive the rotating shaft 3 and the transmission belt 4 to rotate. A slump cylinder 5 is provided on the upper side of the transmission belt 4, and a flushing assembly 6 is provided on the side wall of the support 1. A fixed beam 7 is fixedly connected to the upper side of the support 1. A lifting component 8 and a detection component 9 are provided on the upper side of the fixed beam 7. A weighing component 10 is also provided at the lower side of the middle of the upper surface of the transmission belt 4. Several rotating shafts 3 are provided on the support 1. The several rotating shafts 3 rotate synchronously through the transmission belt 4. The transmission belt 4 is made of water-permeable material and is arranged in an inverted trapezoidal shape. The lifting assembly 8 includes a transmission assembly and a lifting motor 801. The lifting motor 801 drives the collapse cylinder 5 to move up and down. The transmission assembly also includes a connecting buckle 802. Two connecting buckles 802 are provided on the outer wall of the collapse cylinder 5. The outer side of the connecting buckle 802 is fixedly connected to the outer wall of the collapse cylinder 5. A support arm 803 is provided in the middle of the connecting buckle 802. Both the support arm 803 and the connecting buckle 802 have slots. A fixing buckle 804 is inserted into the slot. The upper right end of the right support arm 803 is rotatably connected to a threaded rod 805 through a bearing. The upper end of the threaded rod 805 passes through the fixed beam 7 and extends to the upper side of the fixed beam 7. A threaded toothed ring 806 is threadedly connected to the outer wall of the upper end of the threaded rod 805. The lower surface of the threaded toothed ring 806 is connected to the upper surface of the fixed beam 7 through a bearing. The bearing is rotatably connected, and the outer wall of the threaded toothed ring 806 is connected to the output end of the lifting motor 801 through a bevel gear. The lower side of the lifting motor 801 is fixedly connected to the upper side of the fixed beam 7. The upper surface of the left support arm 803 is fixedly connected to the vibration motor 808. The upper side of the left end of the left support arm 803 is fixedly connected to the slide rod 807. The upper end of the slide rod 807 passes through the fixed beam 7 and extends to the upper side of the fixed beam 7. The outer wall of the slide rod 807 is slidably connected to the inner wall of the fixed beam 7. The lifting motor 801 is electrically connected to the control module. The lifting motor 801 is used to drive the threaded toothed ring 806 to rotate through the bevel gear. The vibration motor 808 is electrically connected to the control module. The vibration motor 808 is used to generate vibration and transmit it to the collapse cylinder 5 through the support arm 803 and the connecting buckle 802. During the initial stage of the experiment, the operator placed the standard slump cone 5 in the central area of ​​the inverted trapezoidal transmission belt 4, ensuring that the lower edge of the cone was completely in contact with the upper surface of the pre-placed base plate 103 to form a temporary seal. Then, according to the specifications, concrete samples were filled into the cone in three layers and compaction was performed. During the process, the control module activated the vibration motor 808 embedded in the support arm 803. The high-frequency, low-amplitude mechanical vibration generated by the motor was directly transmitted to the slump cone 5 through the rigid structure, making the concrete sample more uniform. Subsequently, the control module sends a command to the lifting motor 801. The motor transmits torque to the threaded ring 806 through the bevel gear pair, driving the threaded rod 805 that meshes with it to rotate. Since the connection between the threaded rod 805 and the fixed beam 7 is limited by the bearing to be able to rotate but not move axially, its rotational motion forces the support arm 803 with internal threads to produce a precise vertical displacement. This displacement is ultimately converted into a constant speed vertical lifting motion of the collapse cylinder 5 through the rigid linkage mechanism composed of the support arms 803 on both sides, the connecting buckle 802 and the fixing buckle 804, eliminating the error caused by human lifting speed and shaking. After the concrete slump stabilizes, the control module starts the drive motor 2, and the motor output shaft drives the rotating shaft 3 to rotate. Through the conveying system consisting of multiple parallel rotating shafts 3 and transmission belts 4, the waste concrete sample is quickly and smoothly transported laterally to the collection area on one side of the device. The entire cleaning process does not require manual intervention. After the cleaning is completed, the system is on standby, ready to execute the cleaning process or the next round of experiments. This embodiment achieves standardization, reproducibility, and high-precision control of the slump cylinder lifting process. Combined with vibration assistance and automatic cleaning functions, it fundamentally eliminates random errors introduced by individual differences in operators, greatly improves the repeatability and comparability of experimental data, and minimizes the interval between batch experiments.

[0021] Example 2: Please refer to Figure 1-8 Based on Embodiment 1, the present invention provides a technical solution: the rinsing assembly 6 is used to spray water to clean the transmission belt 4. The rinsing assembly 6 includes a water pump 601. The output end of the water pump 601 is fixedly connected to a connecting pipe 602. The far end of the connecting pipe 602 is fixedly connected to a drain pipe 603. The outer walls of both ends of the drain pipe 603 are fixedly connected to the outer wall of the bracket 1. A plurality of nozzles 604 are provided on the drain pipe 603. The water pump 601 is electrically connected to a control module. The control module controls the water pump 601 to supply water to the inside of the drain pipe 603, and the plurality of nozzles 604 face the lower inclined surface of the transmission belt 4. After the waste removal process in Example 1 is completed, a small amount of cement paste or aggregate residue may be attached to the surface of the transmission belt 4. The control module triggers the water pump 601 to start, pumping pressurized clean water through the connecting pipe 602 into the drain pipe 603 spanning above the support 1. Multiple nozzles 604 arranged in an array on the drain pipe 603 spray high-pressure water evenly onto the bearing slope of the transmission belt 4, i.e. the lower slope of the inverted trapezoid, at a specific angle and coverage range. The water flow strongly washes the belt surface, dissolving and peeling off the residue. Since the transmission belt 4 itself is made of water-permeable material, the sewage and fine particles generated by rinsing can quickly penetrate the belt body, avoiding accumulation on the belt surface. The rinsing process automatically stops after a preset cycle. The water permeability allows the transmission belt 4 to dry quickly, ensuring that it is restored to a clean and dry state before the next experiment, providing a stable and consistent reference plane for the placement of the collapse cylinder 5 and the base plate 103. This embodiment realizes automated cleaning and maintenance of the experimental platform, ensuring that the initial conditions of each experiment are consistent, effectively preventing residues from causing cross-contamination of subsequent samples, or the tilting of the slump cone due to uneven reference surface. This is crucial for obtaining reliable slump data, especially for concrete with different mix proportions.

[0022] Example 3: Please refer to Figure 1-8 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: the detection component 9 includes a first camera 902 and a second camera 904. The first camera 902 is used to detect the projected area after the concrete collapses, and the second camera 904 is used to detect the concrete collapse height. The detection component 9 also includes a top frame 901. The upper side of the fixed beam 7 is fixedly connected to the lower end of the top frame 901. The middle part of the lower side of the top frame 901 is fixedly connected to the upper side of the first camera 902. A fixed rod 903 is fixedly connected to the right side of the fixed beam 7. The middle part of the fixed rod 903 is fixedly connected to the outer wall of the second camera 904. A scale plate 905 is fixedly connected to the left side of the fixed beam 7. The first camera 902 is located on the upper side of the middle of the collapse cylinder 5, the second camera 904 is located on the right side of the middle of the collapse cylinder 5, and the scale plate 905 is located on the left side of the middle of the collapse cylinder 5. After the concrete collapses, it enters the static setting and measurement stage. The system ensures stable lighting in the experimental area to meet the acquisition requirements of machine vision. The first camera 902, fixed to the top frame 901, is an orthogonally mounted fixed-focus industrial camera that captures high-definition images of the top surface of the collapsed concrete vertically downwards. Through image processing algorithms, such as edge detection and pixel calibration, the projected diffusion area of ​​the collapsed concrete is accurately calculated. This parameter is an important supplementary indicator for evaluating the fluidity of concrete. The second camera 904, fixed to the right-side fixing rod 903, images the side of the collapsed body from the horizontal direction. Its field of view must clearly include the scale plate 905 fixed on the left. By comparing the photographed concrete outline with the background with clear height markings pre-marked on the scale plate 905, the collapse value is automatically identified and calculated using computer vision technology. During the loading and static phases, the slump cylinder 5 and the weighing component 10 are in close contact to form a bottom seal, preventing premature moisture loss that could affect the authenticity of the experiment. When the slump cylinder is lifted, the free water that seeps out of the concrete can be quickly drained away through the permeable conveyor belt 4. This process significantly reduces the water film covering the concrete surface and greatly weakens the specular reflection effect, thereby ensuring the clarity and contrast of the images acquired by the first camera 902 and the second camera 904, improving the accuracy of edge recognition and scale measurement. The control module or host computer software automatically processes and analyzes the acquired image data and outputs a quantitative report including slump value and diffusion area. This embodiment achieves non-contact, digital, and high-precision three-dimensional measurement of concrete slump patterns. By using dual cameras working together and referencing a 905-inch scale plate, it replaces the subjective errors caused by traditional manual visual inspection. Combined with a unique drainage design, it effectively suppresses ambient light interference, ensuring the reliability and measurement accuracy of the machine vision system in complex industrial environments.

[0023] Example 4: Please refer to Figure 1-8 Based on Embodiments 1, 2, and 3, the present invention provides a technical solution: the weighing component 10 includes a connecting component and a pressure detection module 102. The pressure detection module 102 is used to detect the weight of concrete. The connecting component includes an mounting plate 101. The two ends of the mounting plate 101 are fixedly connected to the outer wall of the bracket 1. An installation groove is provided on the upper side of the mounting plate 101. The pressure detection module 102 is located inside the lower side of the installation groove. A plurality of drainage outlets 104 penetrating the upper and lower sides of the mounting plate 101 are provided on the lower surface of the inner wall of the installation groove. A bottom plate 103 is placed inside the installation groove. The upper surface of the bottom plate 103 is in contact with the outer wall of the transmission belt 4. The lower side of the bottom plate 103 is in contact with the upper surface of the pressure detection module 102. The diameter of the bottom plate 103 is larger than the lower diameter of the slump cylinder 5. After the system is powered on, the pressure detection module 102 automatically zeros the Tare and completes the tare calibration; The empty collapse cylinder 5 and the bottom plate 103 are placed as a whole in the groove of the mounting plate 101. At this time, the stable reading measured by the pressure detection module 102 is the initial mass m_initial of the entire loading system. After filling the slump cone 5 with freshly mixed concrete, the system reads the stable value of the pressure detection module 102 again to obtain the total mass m_total. Then the net weight of the concrete sample is m_mix=m_total-m_initial. Given the standard volume V of the slump cone, the initial apparent density of the concrete mixture ρ_initial=m_mix / V can be calculated immediately. This data is of great value for mix design verification and quality control. After the concrete has collapsed and the free water has largely seeped in, reaching the preset time threshold, the system can perform a third quality measurement and record the quality m_slump at this time. The difference between m_slump and m_mix can quantitatively characterize the mass of water that is separated and drained during the standing and collapse process. All mass data are automatically recorded and linked with other data from this experiment, such as slump and diffusivity, for subsequent comprehensive analysis. This embodiment seamlessly integrates the weighing function into the experimental process, realizing full-process quality monitoring. It not only provides a direct means to calculate the initial density of concrete, but also quantifies the key performance characteristics of concrete, such as water retention and bleeding properties, by measuring the mass changes before and after slump. This provides additional dimension data that traditional slump tests cannot provide for in-depth research on material behavior and mix design optimization.

[0024] A method for using a high-precision concrete slump measuring device includes the following steps: Step 1: Place the device on a stable workbench and power it on. The control module performs a self-test. The pressure detection module 102 in the weighing component 10 automatically sets the pressure to zero, ensuring that the water source for the rinsing component 6 is connected. The collapse cylinder 5 is placed securely on the base plate 103 above the transmission belt 4. Step 2: According to the standard specifications, concrete is filled into the slump cylinder 5 in three layers and compacted. After filling is completed, the control module records the reading of the pressure detection module 102 at this time. The difference between this value and the tare weight in Step 1 is the net weight of the concrete. The system can automatically calculate the initial apparent density of the concrete based on this. Step 3: The operator issues a "start test" command through the control module, the lifting component 8 starts, and the lifting motor 801 lifts the collapse cylinder 5 vertically and smoothly at a preset constant speed through the threaded rod 805 and the support arm 803 and other transmission mechanisms. Step 4: After the concrete slump stabilizes, the detection component 9 works automatically. The first camera 902 located above takes a top view of the concrete top surface to calculate the slump expansion area, and the second camera 904 located on the side takes a view of the concrete side shape. By comparing it with the scale of the scale plate 905, the slump value is automatically identified and calculated. During this process, the water exuded from the concrete seeps down through the conveyor belt 4 and the drainage outlet 104 on the bottom plate 103 to reduce the reflection of light on the surface and ensure image quality. Step 5: After the measurement data is recorded by the system, the control module starts the drive motor 2, which drives the transmission belt 4 to rotate and transport the collapsed waste concrete away from the test area. Then, the flushing component 6 is started, and the water pump 601 sprays water evenly onto the surface of the transmission belt 4 through the nozzle 604 for automatic cleaning, in preparation for the next experiment. Step Six: The control module or the connected host computer software will summarize and store all the data from this experiment, including slump, spread, concrete weight, estimated density, etc., and can generate a standardized test report.

[0025] This high-precision concrete slump measurement device and method, through integrated and automated design, achieves comprehensive standardization of the experimental process. Its core features include: the lifting component 8, driven by a control module, uses a lifting motor 801, which, via a threaded rod 805 and support arm 803, vertically lifts the slump cylinder 5 at a fixed rate. After the slump is automatically cleared by the inverted trapezoidal transmission belt 4, the washing component 6 immediately cleans the belt surface to ensure a consistent reference plane. In the measurement phase, the first camera 902 at the top and the second camera 904 on the side respectively capture images of the concrete's top and side views, and automatically calculate the diffusion area and slump height with reference to the scale plate 905. Furthermore, the pressure detection module 102 of the weighing component 10 is integrated under the base plate 103, enabling online measurement of concrete weight and density estimation. This solution integrates loading, lifting, clearing, cleaning, image recognition, and weighing, effectively solving the problems of low efficiency, non-standard operation, and limited data in traditional experiments, significantly improving measurement accuracy and reliability.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision concrete slump measuring device, characterized in that: The system includes a support (1) and a control module. A drive motor (2) is fixedly connected to the outer wall of the support (1). A rotating shaft (3) is rotatably connected to the outer wall of the support (1) through a bearing. The output end of the drive motor (2) is fixedly connected to one side of the rotating shaft (3). A transmission belt (4) is provided on the outside of the rotating shaft (3). The transmission belt (4) is made of a permeable material so that the free water released during the concrete collapse can be discharged downward through the transmission belt (4). The drive motor (2) is controlled by the control module and is used to drive the rotating shaft (3) and the transmission belt (4) to rotate. A slumping cylinder (5) is provided on the upper side of the transmission belt (4), and a flushing assembly (6) is provided on the side wall of the support (1). A fixed beam (7) is fixedly connected to the upper side of the bracket (1), and a lifting component (8) and a detection component (9) are provided on the upper side of the fixed beam (7). The lifting assembly (8) includes a transmission assembly and a lifting motor (801), which is used to drive the collapse cylinder (5) to move up and down; The transmission assembly also includes a connecting buckle (802). Two connecting buckles (802) are provided on the outer wall of the collapse cylinder (5). The outer side of the connecting buckle (802) is fixedly connected to the outer wall of the collapse cylinder (5). A support arm (803) is provided in the middle of the connecting buckle (802). A vibration motor (808) is fixedly connected to the upper surface of the support arm (803) on the left side. A slide rod (807) is fixedly connected to the upper side of the left end of the support arm (803). The upper end of the slide rod (807) passes through the fixed beam (7) and extends to the upper side of the fixed beam (7). The outer wall of the slide rod (807) is slidably connected to the inner wall of the fixed beam (7). The lifting motor (801) is electrically connected to the control module. The lifting motor (801) is used to drive the threaded ring (806) to rotate through the bevel gear. The vibration motor (808) is electrically connected to the control module. The vibration motor (808) is used to generate vibration and transmit it to the collapse cylinder (5) through the support arm (803) and the connecting buckle (802). The detection component (9) includes a first camera (902) and a second camera (904). The first camera (902) is used to detect the projected area after the concrete collapses, and the second camera (904) is used to detect the height of the concrete collapse. The flushing assembly (6) is used to spray water to clean the transmission belt (4) in order to maintain the cleanliness and permeability of the transmission belt (4), thereby reducing the formation of water film on the concrete surface and reducing the specular reflection generated by the water film, so as to improve the clarity of the concrete collapse state images captured by the first camera (902) and the second camera (904). A weighing component (10) is also provided on the lower side of the middle part of the upper surface of the transmission belt (4). The weighing component (10) includes a connecting component and a pressure detection module (102), which is used to detect the weight of concrete. The connecting assembly includes a mounting plate (101), both ends of which are fixedly connected to the outer wall of the bracket (1). The mounting plate (101) has an installation groove on its upper side, and the pressure detection module (102) is located inside the lower side of the installation groove. The control module is configured to acquire first mass data after the concrete is loaded, and acquire second mass data after the concrete collapses and a preset detection time is reached, and determine the mass of water that is released and discharged during the concrete collapse process based on the first mass data and the second mass data.

2. The high-precision concrete slump measuring device according to claim 1, characterized in that: The bracket (1) is provided with several rotating shafts (3), and the several rotating shafts (3) are driven to rotate synchronously by a transmission belt (4), which is arranged in an inverted trapezoidal shape.

3. The high-precision concrete slump measuring device according to claim 2, characterized in that: The flushing assembly (6) includes a water pump (601), the output end of which is fixedly connected to a connecting pipe (602), the far end of which is fixedly connected to a drain pipe (603), the outer walls of both ends of the drain pipe (603) are fixedly connected to the outer wall of the bracket (1), and a plurality of nozzles (604) are provided on the drain pipe (603).

4. The high-precision concrete slump measuring device according to claim 3, characterized in that: The water pump (601) is electrically connected to the control module, which controls the water pump (601) to supply water to the inside of the drain pipe (603), and several of the nozzles (604) face the lower slope of the transmission belt (4).

5. The high-precision concrete slump measuring device according to claim 4, characterized in that: Both the support arm (803) and the connecting buckle (802) are provided with a socket, and a fixing buckle (804) is inserted into the socket. The upper right end of the support arm (803) on the right side is rotatably connected to a threaded rod (805) through a bearing. The upper end of the threaded rod (805) passes through the fixing beam (7) and extends to the upper side of the fixing beam (7). The upper outer wall of the threaded rod (805) is threadedly connected to a threaded toothed ring (806). The lower surface of the threaded toothed ring (806) is rotatably connected to the upper surface of the fixing beam (7) through a bearing. The outer wall of the threaded toothed ring (806) is driven by the output end of the lifting motor (801) through a bevel gear. The lower side of the lifting motor (801) is fixedly connected to the upper side of the fixing beam (7).

6. The high-precision concrete slump measuring device according to claim 5, characterized in that: The detection assembly (9) also includes a top frame (901), the upper side of the fixed beam (7) is fixedly connected to the lower end of the top frame (901), the middle part of the lower side of the top frame (901) is fixedly connected to the upper side of the first camera (902), a fixed rod (903) is fixedly connected to the right side of the fixed beam (7), the middle part of the fixed rod (903) is fixedly connected to the outer wall of the second camera (904), a scale plate (905) is fixedly connected to the left side of the fixed beam (7), the first camera (902) is located on the upper side of the middle of the collapse cylinder (5), the second camera (904) is located on the right side of the middle of the collapse cylinder (5), and the scale plate (905) is located on the left side of the middle of the collapse cylinder (5).

7. The high-precision concrete slump measuring device according to claim 6, characterized in that: The lower surface of the inner wall of the mounting groove is provided with several drainage outlets (104) that penetrate the upper and lower sides of the mounting plate (101). A base plate (103) is placed inside the mounting groove. The upper surface of the base plate (103) is in contact with the outer wall of the transmission belt (4), and the lower side of the base plate (103) is in contact with the upper surface of the pressure detection module (102). The diameter of the base plate (103) is larger than the lower diameter of the collapse cylinder (5).

8. A method of using a high-precision concrete slump measuring device, for use with any one of the measuring devices described in claims 1-7, characterized in that: Includes the following steps: Step 1: Place the device on a stable workbench and power it on. The control module performs a self-test. The pressure detection module (102) in the weighing component (10) automatically sets the pressure to zero, ensuring that the water source for the flushing component (6) is connected. The collapse cylinder (5) is placed securely on the base plate (103) above the transmission belt (4). Step 2: According to the standard specifications, concrete is filled into the slump cylinder (5) in three layers and compacted. After filling, the control module records the reading of the pressure detection module (102) at this time. The difference between this reading and the tare weight in step 1 is the net weight of the concrete. The system can automatically calculate the initial apparent density of the concrete based on this. Step 3: The operator issues a "start test" command through the control module, the lifting component (8) is started, and the lifting motor (801) is driven by the threaded rod (805) and the support arm (803) transmission mechanism to vertically and smoothly lift the collapse cylinder (5) at a preset constant speed. Step 4: After the concrete slump stabilizes, the detection component (9) works automatically. The first camera (902) located above takes a top view of the concrete top surface to calculate the slump expansion area. The second camera (904) located on the side takes a picture of the concrete side shape and automatically identifies and calculates the slump value by comparing it with the scale plate (905). During this period, the water exuded from the concrete seeps down through the conveyor belt (4) and the drainage outlet (104) on the bottom plate (103) to reduce the reflection of light on the surface and ensure image quality. Step 5: After the measurement data is recorded by the system, the control module starts the drive motor (2) to drive the transmission belt (4) to rotate and transport the collapsed waste concrete away from the test area. Then, the flushing component (6) is started and the water pump (601) sprays water evenly onto the surface of the transmission belt (4) through the nozzle (604) for automatic cleaning, in preparation for the next experiment. Step Six: The control module or the connected host computer software will summarize and store all the data from this experiment, including slump, spread, concrete weight, and estimated density, and can generate a standardized test report.

Images