Intelligent measuring device and method for setting time of cement-based material

Abstract

The application discloses an intelligent determination device and method for cement-based material setting time, which comprises a sample container for bearing cement-based material, a test needle rotating disc arranged above the sample container, a first driving motor connected with the test needle rotating disc, an electric lifting rod eccentrically arranged on the test needle rotating disc, a test needle installed at the end of the electric lifting rod and pressed down along with the elongation of the electric lifting rod, a test needle pressure sensor arranged on the test needle and used for detecting the pressure borne by the test needle when the test needle is inserted into the cement-based material, an intelligent control terminal with an input end connected with the output end of the test needle pressure sensor and a first output end connected with the first driving motor.

Description

Technical Field

[0001] This application relates to the field of construction machinery technology, and in particular to an intelligent device and method for measuring the setting time of cement-based materials. Background Technology

[0002] Cement-based materials are made by mixing inorganic cementitious materials, fine aggregates, and water in a specific ratio, and are commonly used in various masonry and plastering projects. Setting time is measured by the setting rate and time, expressed as penetration resistance. Understanding the setting time of materials is crucial during construction, as it allows for better control of the setting time and mix proportions, thereby ensuring construction quality and improving construction progress.

[0003] Setting time testers are essential testing instruments for building research institutions, building material production, and testing industries. Currently, there are different types of setting time testers for cement-based materials on the market, but most are traditional types. Their characteristic is that during use, the testing personnel continuously measure and read the force value displayed on the instrument's dial, calculate the material's penetration resistance, and thus determine the material's setting time.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0005] This measurement method, which relies on visual readings of the dial to calculate penetration resistance, is prone to significant errors. Furthermore, it requires frequent and continuous manual calculations of penetration resistance, and a single measurement cycle for setting time can last for tens of hours. Manual determination of setting time is time-consuming, labor-intensive, and prone to errors. In addition, the depth and force of the needle insertion in traditional setting time measuring instruments are typically controlled manually, resulting in substantial errors with each insertion, and these errors persist even with repeated measurements. The measurement process involves a large amount of data, a long cycle, and significant errors due to manual measurement alone, consuming considerable manpower and effort. Summary of the Invention

[0006] The purpose of this application is to provide an intelligent device and method for measuring the setting time of cement-based materials, in order to solve the technical problems existing in related technologies, such as: the inability to intelligently measure the setting time of cement-based materials; the inability to control the consistent penetration depth due to the volume shrinkage of the slurry during penetration resistance measurement, resulting in a drop in the liquid level; the inability to automatically change the penetration position to avoid repeated measurements at the same position, thus compromising the accuracy of the experimental data; and the inability to intelligently record all data values ​​in a single measurement process. This invention aims to achieve automated measurement of the setting time of multiple sets of cement-based material samples, reducing errors, lowering the workload of experimental personnel, and significantly improving experimental efficiency.

[0007] According to a first aspect of the embodiments of this application, an intelligent device for measuring the setting time of cement-based materials is provided, comprising:

[0008] Containers used to hold cement-based materials for samples;

[0009] A test needle turntable is disposed above the sample container and is connected to a first drive motor;

[0010] An electric lifting rod is eccentrically mounted on the test needle turntable and connected to an external power source.

[0011] The test needle is installed at the end of the electric lifting rod and descends as the electric lifting rod is pressed down. The test needle is equipped with a pressure sensor, which is used to detect the pressure that the test needle bears when it penetrates the cement-based material.

[0012] The intelligent control terminal has its input terminal connected to the output terminal of the pressure sensor, and its first output terminal connected to the first drive motor.

[0013] Furthermore, it also includes a support, which includes a base, two columns and two layers of crossbeams. One end of each column is mounted on the base, and the crossbeams are all mounted between the columns. The sample container is disposed on the base, wherein the first drive motor is supported on the first crossbeam and the test needle turntable is supported on the second crossbeam.

[0014] Furthermore, the second crossbeam is cut off at the middle, and grooves are provided inward on each of the two cut surfaces. The test needle turntable is supported on the second crossbeam through the two grooves. Steel balls are installed at the connection between the support and the turntable, ensuring support without affecting the rotation of the turntable.

[0015] Furthermore, it also includes a pressure display device, the input end of which is connected to the output end of the pressure sensor, for displaying the pressure changes experienced by the test needle during the process of penetrating the cement-based material.

[0016] Furthermore, it also includes a sliding structure, which is disposed on the test needle turntable and includes a gear connecting rod, a sliding structure drive motor, and a rotating track. The electric lifting rod is placed on the rotating track, and the electric lifting rod passes through the rotating track below to facilitate connection of the test needle. The sliding structure drive motor is connected to the gear of the gear connecting rod and rotates, thereby driving the rotating track to rotate, so as to realize the translation of the electric lifting rod along the radial direction of the test needle turntable.

[0017] Furthermore, it also includes a printer, the input end of which is connected to the third output end of the intelligent control terminal, for printing the data stored by the intelligent control terminal during the experiment.

[0018] Furthermore, the sample container is a sample turntable, which has several grooves for supporting the cement-based material. The sample turntable is connected to a second drive motor, and the second output terminal of the intelligent control terminal is connected to the second drive motor.

[0019] Furthermore, the test needle turntable is connected to the first drive motor via a transmission rod.

[0020] According to a second aspect of the embodiments of this application, an intelligent method for determining the setting time of cement-based materials is provided, applied to the intelligent device for determining the setting time of cement-based materials described in the first aspect, comprising:

[0021] S11: Add freshly mixed cement-based material sample to the sample container;

[0022] S12: The intelligent control terminal controls the electric lifting rod to descend. First, based on the sample, the intelligent control terminal sets the termination measurement force. The intelligent control terminal controls the electric lifting rod to descend at a constant speed of 5-8 mm per second until the bottom of the needle contacts the sample liquid surface. When the pressure detected by the precision pressure sensor at the tip of the needle is greater than 0, the electric lifting rod stops moving. At this point, the needle position is taken as the measurement start position. The intelligent control terminal then controls the electric lifting rod to descend to the standard depth at a speed of 10-15 mm per second, and then rises until the needle is completely away from the original position on the liquid surface. The intelligent control terminal receives the pressure signal transmitted by the pressure sensor and records the maximum resistance value encountered by the pressure sensor during the descent as the single measurement data.

[0023] S13: The intelligent control terminal controls the first drive motor to control the test needle turntable to rotate 15° to 30° after 30 minutes through the transmission rod, and repeats step S12;

[0024] S14: Repeat step S13. When the test needle turntable has completed a 360° rotation, the intelligent control terminal controls the sliding structure to make the electric lifting rod slide 0.5-1.0cm towards the center of the test needle turntable. Repeat the above steps S12-S13.

[0025] S15: When the maximum resistance measured after the test needle is inserted exceeds the predetermined value, the intelligent control terminal controls the first drive motor to stop working and controls the electric lifting rod to stop working and return to the state before working.

[0026] According to a third aspect of the embodiments of this application, an intelligent method for determining the setting time of cement-based materials is provided, applied in an intelligent device for determining the setting time of cement-based materials where the sample container is a sample turntable, comprising:

[0027] S21: Add a standard volume of sample to each standard mold, and place the standard molds in the groove of the sample turntable in sequence, wherein the sample in each standard mold is freshly mixed cement-based material of the same or different types.

[0028] S22: The intelligent control terminal controls the electric lifting rod to descend. First, based on the sample, the intelligent control terminal sets the termination measurement force. The intelligent control terminal controls the electric lifting rod to descend at a constant speed of 5-8 mm per second until the bottom of the needle contacts the sample liquid surface. When the pressure detected by the precision pressure sensor at the tip of the needle is greater than 0, the electric lifting rod stops moving. The position of the needle at this time is taken as the measurement start position. The intelligent control terminal controls the electric lifting rod to descend to the standard depth at a speed of 10-15 mm per second, and then rises back to its original position until the needle is completely away from the liquid surface. The intelligent control terminal receives the pressure signal transmitted by the pressure sensor and records the maximum resistance value of the pressure sensor during the descent as the single measurement data.

[0029] S23: Start the second drive motor to rotate the sample turntable to the second group of samples to the needle insertion position, and repeat step S22 to complete the insertion.

[0030] S24: After all samples have been measured once, the intelligent control terminal controls the first drive motor to control the test needle turntable to rotate 15° to 30° after 30 minutes via the transmission rod, and repeats steps S22 and S23.

[0031] S25: Repeat step S24. When the test needle turntable has completed a 360° rotation, the intelligent control terminal controls the sliding structure to make the electric lifting rod slide 0.5-1.0cm towards the center of the test needle turntable. Repeat the above steps S22-S24.

[0032] S26: When the maximum resistance measured after the test needle is inserted exceeds the predetermined value, the intelligent control terminal controls the first drive motor and the second drive motor to stop working, and controls the electric lifting rod to stop working and return to the state before working.

[0033] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0034] As can be seen from the above embodiments, this application (1) uses an intelligent control terminal to control the electric lifting rod to initially move slowly downwards. When the test needle pressure sensor on the test needle contacts the sample surface, it transmits a pressure signal. The intelligent control terminal receives the pressure signal and controls the electric lifting rod to stop moving downwards. At the same time, the electric lifting rod controls the pointer to quickly penetrate downwards. When the test needle reaches the standard penetration depth, it quickly rises. Meanwhile, the measuring pressure sensor at the bottom of each sample slot in the sample turntable records the maximum value of a single penetration and transmits the data to the intelligent control terminal for recording. This ensures that during the measurement process, even if the liquid level is different due to the shrinkage of the same volume of material after water seepage, the penetration depth and speed of the sample are consistent each time, thus achieving the function of intelligently controlling the setting time of cement-based materials and improving accuracy. (2) The intelligent control terminal controls the first drive motor to rotate the test needle turntable by a certain angle and controls the sliding structure to slide the electric lifting rod towards the center of the test needle turntable, changing the penetration position of the test needle at different times, ensuring that the penetration position is not repeated each time, and ensuring the authenticity and validity of the measurement data. (3) The measuring pressure sensor under the sample container records and transmits data. The data of the measuring pressure sensor is received by the intelligent control terminal. No reading record is required, which avoids the error of manual reading and improves the experimental efficiency.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0037] Figure 1 This is a schematic diagram of an intelligent device for measuring the setting time of cement-based materials according to an exemplary embodiment.

[0038] Figure 2 This is a schematic diagram of a test needle turntable according to an exemplary embodiment.

[0039] Figure 3 This is a schematic diagram of a probe structure sliding device according to an exemplary embodiment.

[0040] Figure 4 This is a schematic diagram of a sample turntable structure according to an exemplary embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Base; 2. Column; 3. Pressure display instrument; 4. Intelligent control terminal; 5. Printer; 6. Sample turntable; 7. Second drive motor; 8. Sliding structure; 8-1. Gear connecting rod; 8-2. Sliding structure drive motor; 8-3. Rotating track; 9. Second crossbeam; 10. Test needle turntable; 11. Electric lifting rod; 12. Test needle; 13. Test needle pressure sensor; 14. First crossbeam; 15. First drive motor; 16. Transmission rod; 17. Measuring pressure sensor. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0044] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0045] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0046] Figure 1 This is a schematic diagram of an intelligent device for measuring the setting time of cement-based materials according to an exemplary embodiment, as shown below. Figure 1As shown, the device may include a sample container for holding cement-based materials, a test needle turntable 10, an electric lifting rod 11, a test needle 12, and an intelligent control terminal 4. The test needle turntable 10 is positioned above the sample container and is connected to a first drive motor 15. The electric lifting rod 11 is eccentrically positioned on the test needle turntable 10 and achieves telescopic movement through its own structure. The test needle 12 is installed at the end of the electric lifting rod 11 and descends as the electric lifting rod 11 extends. A test needle pressure sensor 13 is provided on the test needle 12. The test needle pressure sensor 13 receives and transmits a pressure signal when it contacts the sample surface. The intelligent control terminal 4 receives the pressure signal, controls the electric lifting rod 11 to stop descending, marks the starting position of the pointer, and simultaneously allows the electric lifting rod 11 to control the pointer to quickly penetrate and rise back to its original position. Furthermore, it achieves the goal of maintaining a consistent penetration depth even as the liquid level of the same volume of sample material changes due to different water seepage conditions over time, ensuring the accuracy of the test data. Each groove of the sample turntable 6 containing a sample container is equipped with a pressure sensor 17. The pressure sensor 17 detects the penetration resistance of the cement-based material when the needle 12 is inserted and transmits the data to the intelligent control terminal 4 for recording and storage. The input end of the intelligent control terminal 4 is connected to the output end of the pressure sensor 17, and the first output end of the intelligent control terminal 4 is connected to the first drive motor 15.

[0047] Preferably, the pressure sensor 17 is a piezoelectric pressure sensor. This is beneficial for measuring dynamic stress.

[0048] As can be seen from the above embodiments, in this application (1), the intelligent control terminal 4 controls the electric lifting rod 11 to plunge down, and the test needle pressure sensor 13 on the test needle 12 transmits a pressure signal when it contacts the sample surface. The intelligent control terminal 4 receives the pressure signal and controls the electric lifting rod 11 to stop moving down, marking the starting position of the pointer measurement, so that the electric lifting rod 11 can control the pointer to plunge down quickly, so as to ensure that the depth and speed of each plunging into the sample are consistent, avoiding the problem of inconsistent plunging depth caused by the volume shrinkage of the same volume of material due to solidification. It achieves the function of intelligently controlling the setting time of cement-based materials and improving accuracy; (2) the intelligent control terminal 4 controls the first drive motor 15 to rotate the test needle turntable 10 by a certain angle, changing the downward pressure position of the electric lifting rod 11, thereby changing the plunging position of the test needle 12. (3) the measuring pressure sensor 17 under the sample container records and transmits data, and the intelligent control terminal 4 receives the data of the measuring pressure sensor 17, without the need for reading and recording, avoiding the error of manual reading.

[0049] Preferably, the test needle pressure sensor 13 is a strain gauge pressure sensor. Strain gauge pressure sensors have the advantages of high measurement accuracy and sensitivity, and are highly adaptable. They can accurately and quickly stop the descent of the electric lifting rod 11 in the early stages of cement-based material strength forming, and can maintain high-precision working performance even with frequent contact with slurry.

[0050] refer to Figure 2 As shown, the test needle turntable 10 contains a sliding structure 8, and the electric lifting rod 11 is mounted on the sliding structure 8. The intelligent control terminal 4 controls the sliding structure drive motor 8-2 to drive the sliding structure to slide the electric lifting rod 11 towards the center of the test needle turntable 10 after the test needle turntable 10 has completed a 360° rotation. This changes the insertion position of the test needle 12 at different times, ensuring that the insertion position is not repeated each time and guaranteeing the validity of the measurement data.

[0051] refer to Figure 3 As shown, after the test needle 12 completes one insertion, the second drive motor 7 is controlled by the intelligent control terminal 4 to rotate once, so that the next set of samples is located below the test needle 12 and waiting for testing, thereby realizing the measurement of multiple sets of samples.

[0052] refer to Figure 4 As shown, a pressure sensor 13 is installed at the top of the test needle 12. As the test needle 12 descends, when the pressure sensor 13 touches the sample surface, it generates a pressure signal and transmits it to the intelligent control terminal 4. The intelligent control terminal 4 receives the feedback pressure signal and controls the electric lifting rod 11 to stop descending. The installation of the pressure sensor 13 enables intelligent control of the insertion depth of the test needle 12 to remain consistent, improving the accuracy of the experiment.

[0053] In this embodiment, the intelligent control terminal 4 can be an OHR-F101R-A-2-A-1 intelligent feedback recorder product, but it is not limited to this.

[0054] Specifically, it also includes a support, which includes a base 1, two columns 2 and two layers of crossbeams. One end of each column 2 is mounted on the base 1, and the crossbeams are all mounted between the columns 2. The sample container is set on the base 1, wherein the first drive motor 15 is supported on the first crossbeam 14, and the test needle turntable 10 is supported on the second crossbeam 9.

[0055] Specifically, the second crossbeam 9 is cut off at the middle, and grooves are provided inward on each of the two cut surfaces. The test needle turntable 10 is supported on the second crossbeam 9 through the two grooves. The grooves allow the test needle turntable 10 to rotate, changing the insertion position and enabling measurement at different positions of a sample, thus improving experimental accuracy.

[0056] Specifically, it also includes a pressure display instrument 3, the input end of which is connected to the output end of the pressure measuring sensor 17, for displaying the pressure on the bottom of the sample when the test needle 12 is inserted into the cement-based material as measured by the pressure measuring sensor 17.

[0057] In a specific embodiment, the pressure display instrument 3 is mounted on the base 1, the sample turntable 6 is disposed on the pressure display instrument 3, and the measuring pressure sensor 17 is disposed on the sample turntable 6 to realize the measurement of penetration resistance during penetration.

[0058] Specifically, the device may further include a sliding structure 8, which is disposed on the test needle turntable 10 and includes a gear connecting rod 8-1, a sliding structure drive motor 8-2, and a rotating track 8-3. The electric lifting rod 11 is placed on the rotating track 8-3, and the electric lifting rod 11 passes through the rotating track 8-3 below to facilitate connection of the test needle 12. The sliding structure drive motor 8-2 is connected to the gear of the gear connecting rod 8-1 and rotates, thereby driving the rotating track 8-3 to rotate, so as to realize the translation of the electric lifting rod 11 along the radial direction of the test needle turntable 10, thereby changing the insertion position of the test needle 12.

[0059] Specifically, it also includes a printer 5, whose input end is connected to the third output end of the intelligent control terminal 4, for printing the data stored by the intelligent control terminal 4 during the experiment. When measuring multiple sets of samples simultaneously, it can intelligently output data reports for multiple sets of samples, facilitating subsequent data analysis and comparison by experimental personnel.

[0060] Specifically, the sample turntable 6 is provided with a plurality of grooves for bearing the cement-based material, the sample turntable 6 is connected to the second drive motor 7, and the second output end of the intelligent control terminal 4 is connected to the second drive motor 7.

[0061] In this embodiment, the second drive motor 7 is as follows: Figure 3 As shown. The sample turntable 6 is mounted on the second drive motor 7, enabling the rotation of the sample turntable 6. The second drive motor 7 allows the sample turntable 6 to rotate, enabling penetration measurements at different positions of the same sample, thus improving the accuracy of the experiment.

[0062] In this embodiment, the intelligent control terminal 4 controls the second drive motor 7 to rotate the sample turntable 6 to the next sample during a single measurement. After the sample turntable 6 has rotated 360°, the intelligent control terminal 4 controls the first drive motor 15 to drive the needle turntable 10 to rotate 13-15° to prevent repeated measurements of the same position of the sample from causing deviations in the experimental results and to ensure the validity of the experimental results. After the needle turntable 10 has rotated 360°, the intelligent control terminal 4 controls the sliding structure drive motor 8-2 to change the position of the electric lifting rod 11, thereby changing the insertion position of the needle 12.

[0063] In practice, the dimensions of the sample turntable 6 and the needle turntable 10 can be flexibly adjusted according to the required number of measurement groups. This setting is standard in the field and will not be elaborated here.

[0064] Specifically, such as Figure 4 As shown, the test needle turntable 10 is connected to the first drive motor 15 via a transmission rod 16. When the intelligent control terminal 4 controls the first drive motor 15 to operate, the first drive motor 15 causes the test needle turntable 10 to rotate via the transmission rod 16, thereby changing the insertion position.

[0065] This application also provides an intelligent method for determining the setting time of cement-based materials, which, when applied to the aforementioned intelligent device for determining the setting time of cement-based materials, may include:

[0066] S11: Add freshly mixed cement-based material sample to the sample container;

[0067] S12: The intelligent control terminal 4 controls the electric lifting rod 11 to descend. First, according to the sample, the intelligent control terminal 4 edits the termination measurement force of the electric lifting rod 11. The intelligent control terminal 4 controls the electric lifting rod 11 to descend at a constant speed of 5-8 mm per second until the bottom of the test needle 12 contacts the sample liquid surface. When the pressure detected by the precision pressure sensor at the top of the test needle 12 is greater than 0, the electric lifting rod 11 stops moving. At this time, the position of the test needle 12 is taken as the measurement start position. The intelligent control terminal 4 controls the electric lifting rod 11 to descend to the standard depth at a speed of 10-15 mm per second, and then rises until the test needle 12 completely leaves the liquid surface. The intelligent control terminal 4 receives the pressure signal transmitted by the pressure sensor and records the maximum resistance value of the pressure sensor during the descent as the single measurement data.

[0068] S13: The intelligent control terminal 4 controls the first drive motor 15 to control the test needle turntable 10 to rotate 15° to 30° after 30 minutes through the transmission rod 16, and repeats step S12.

[0069] S14: Repeat step S13. When the test needle turntable 10 has completed a 360° rotation, the intelligent control terminal 4 controls the sliding structure 8 to make the electric lifting rod 11 slide 0.5-1.0cm toward the center of the test needle turntable 10. Repeat the above steps S12-S13.

[0070] S15: When the maximum resistance measured after the test needle 12 is inserted exceeds the predetermined value, the intelligent control terminal 4 controls the first drive motor 15 to stop working and controls the electric lifting rod 11 to stop working and return to the state before working.

[0071] Preferably, an intelligent method for determining the setting time of cement-based materials, applied to an intelligent device for determining the setting time of cement-based materials where the sample container is the sample turntable 6, may include:

[0072] S21: Add a predetermined volume of freshly mixed samples with different proportions to the standard mold, and place the standard mold into the groove of the sample turntable 6 in sequence.

[0073] S22: The intelligent control terminal 4 controls the electric lifting rod 11 to descend. First, based on the actual material, the measurement time of the intelligent control terminal is edited. The intelligent control terminal 4 controls the electric lifting rod 11 to descend slowly at a speed of 5-8 mm per second until the bottom of the test needle 12 contacts the sample liquid surface. Then, the intelligent control terminal 4 controls the electric lifting rod 11 to descend rapidly at a speed of 10-15 mm per second. When the intelligent control terminal 4 receives the pressure signal transmitted by the test needle pressure sensor 13, it immediately controls the electric lifting rod 11 to stop descending and rise at a uniform speed. The measuring pressure sensor 17, which is set at the bottom of the groove of the sample turntable 6, measures the pressure signal and transmits it to the intelligent control terminal 4 to record the maximum resistance value encountered by the pressure sensor during the descent.

[0074] S23: Start the second drive motor 7 to rotate the sample turntable 6 to the second group of samples to the needle insertion position, and repeat step S22 to complete the insertion.

[0075] S24: After all samples have been measured once, the intelligent control terminal 4 controls the first drive motor 15 to control the test needle turntable 10 to rotate 15° to 30° after 30 minutes via the transmission rod 16, and repeats steps S22 and S23.

[0076] S25: Repeat step S24. When the test needle turntable 10 has completed a 360° rotation, the intelligent control terminal 4 controls the sliding structure 8 to make the electric lifting rod 11 slide 0.5-1.0cm toward the center of the test needle turntable 10. Repeat the above steps S22-S24.

[0077] S26: When the maximum resistance measured after the test needle 12 is inserted exceeds the predetermined value, the intelligent control terminal 4 controls the first drive motor 15 and the second drive motor 7 to stop working, and controls the electric lifting rod 11 to stop working and return to the state before working.

[0078] It should be noted that the specific implementation of the above two intelligent methods for determining the setting time of cement-based materials has been described in the section on the specific implementation of the intelligent device for determining the setting time of cement-based materials, and will not be repeated here.

[0079] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0080] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. An intelligent device for measuring setting time of cementitious materials, characterized in that, The application relates to an intelligent cement-based material setting time measuring device. The device comprises a sample container for carrying cement-based material, wherein the sample container is a sample rotating disc, and a plurality of grooves for carrying the cement-based material are arranged on the sample rotating disc; a measuring pressure sensor is arranged in each groove for placing the sample container; A test needle rotating disc is arranged above the sample container, and the test needle rotating disc is connected with a first driving motor; An electric lifting rod is arranged eccentrically on the test needle rotating disc and is connected with an external power supply; A test needle is arranged at the end of the electric lifting rod and is lowered with the electric lifting rod, wherein a test needle pressure sensor is arranged on the test needle and is used for detecting the pressure borne by the test needle when the test needle penetrates into the cement-based material; An intelligent control terminal is connected with the output end of the test needle pressure sensor, and a first output end of the intelligent control terminal is connected with the first driving motor; A sliding structure is arranged on the test needle rotating disc and comprises a gear connecting rod, a sliding structure driving motor and a rotating track, the electric lifting rod is arranged on the rotating track, the electric lifting rod passes through the rotating track below and is convenient for connecting the test needle; the sliding structure driving motor is connected with the gear of the gear connecting rod and rotates, thereby driving the rotating track to rotate and realizing the horizontal movement of the electric lifting rod along the radial direction of the test needle rotating disc; The intelligent control terminal is configured to control the electric lifting rod to lower at a first speed until the test needle pressure sensor detects that the test needle contacts the surface of the cement-based material, control the electric lifting rod to lower at a second speed to a standard depth and then lift, and record the penetration resistance data detected by the measuring pressure sensor; after completing one measurement, the test needle rotating disc is controlled to rotate by a first angle.

2. The apparatus of claim 1, wherein, The device further comprises a support, the support comprises a base, two columns and two layers of cross beams, one end of the column is arranged on the base, the cross beams are arranged between the columns, the sample container is arranged on the base, a first cross beam supports the first driving motor, and a second cross beam supports the test needle rotating disc.

3. The apparatus of claim 2, wherein, The middle part of the second cross beam is truncated, grooves are arranged inwardly on the two truncated surfaces, the test needle rotating disc is supported on the second cross beam through the two grooves, and a steel ball is arranged at the connection between the support and the rotating disc, so that the support can guarantee the rotation of the rotating disc.

4. The apparatus of claim 1, wherein, The device further comprises a pressure display instrument, the input end of the pressure display instrument is connected with the output end of the test needle pressure sensor, and the pressure display instrument is used for displaying the change of the pressure borne by the test needle during the penetration into the cement-based material.

5. The apparatus of claim 1, wherein, The device further comprises a printer, the input end of the printer is connected with the third output end of the intelligent control terminal, and the printer is used for printing the data stored by the intelligent control terminal during the test.

6. The apparatus of claim 1, wherein, The sample rotating disc is connected with a second driving motor, and a second output end of the intelligent control terminal is connected with the second driving motor.

7. The apparatus of claim 1, wherein, The test needle rotating disc is connected with the first driving motor through a transmission rod.

8. A method of intelligent determination of setting time of cementitious materials, characterized in that, The application relates to an intelligent cement-based material setting time measuring device. S11: adding a freshly mixed cementitious material sample into a sample container; S12: the intelligent control terminal controls the electric lifting rod to descend, first according to the sample, the intelligent control terminal controls the electric lifting rod to descend at a speed of 5-8 mm per second until the bottom of the test needle contacts the sample liquid surface, when the test needle pressure sensor at the top of the test needle monitors a pressure greater than 0, the electric lifting rod stops moving, at this time, the position of the test needle is taken as the measurement starting position; the intelligent control terminal controls the electric lifting rod to descend at a speed of 10-15 mm per second to the standard depth, then rises to the original position where the test needle completely leaves the liquid surface, the intelligent control terminal receives the pressure signal transmitted by the test needle pressure sensor, and records the maximum resistance value of the test needle pressure sensor during the descending process as single measurement data; S13: the intelligent control terminal controls the first driving motor to control the test needle rotating disc to rotate 15°-30° after 30 minutes through the transmission rod, and repeats step S12; S14: when the test needle rotating disc completes a rotation of 360°, the intelligent control terminal controls the sliding structure to slide the electric lifting rod to the center of the test needle rotating disc by 0.5-1.0 cm, and repeats the above steps S12-S13; S15: when the maximum resistance value measured after the test needle descends exceeds a predetermined value, the intelligent control terminal controls the first driving motor to stop working, and controls the electric lifting rod to stop working and restore the working state.

9. A method of intelligent determination of setting time of cementitious materials, characterized in that, The application is applied to the intelligent cementitious material setting time measuring device in claim 6, and comprises: S21: adding a standard volume of sample into each standard mold, and placing the standard molds in the grooves of the sample rotating disc in sequence, wherein the sample in each standard mold is a freshly mixed cementitious material which is the same or different; S22: the intelligent control terminal controls the electric lifting rod to descend, first according to the sample, the intelligent control terminal controls the electric lifting rod to descend at a speed of 5-8 mm per second until the bottom of the test needle contacts the sample liquid surface, when the test needle pressure sensor at the top of the test needle monitors a pressure greater than 0, the electric lifting rod stops moving, at this time, the position of the test needle is taken as the measurement starting position; the intelligent control terminal controls the electric lifting rod to descend at a speed of 10-15 mm per second to the standard depth, then rises to the original position where the test needle completely leaves the liquid surface, the intelligent control terminal receives the pressure signal transmitted by the test needle pressure sensor, and records the maximum resistance value of the test needle pressure sensor during the descending process as single measurement data; S23: starting the second driving motor to rotate the sample rotating disc to the test needle descending position, and repeating step S22 to complete the descending; S24: when all the single measurements of the samples are completed, the intelligent control terminal controls the first driving motor to control the test needle rotating disc to rotate 15°-30° after 30 minutes through the transmission rod, and repeats steps S22 and S23; S25: repeat step S24, when the test needle rotating disc completes 360° rotation, the intelligent control terminal controls the sliding structure to make the electric lifting rod slide to the center of the test needle rotating disc by 0.5-1.0 cm, and repeats the above steps S22-S24; S26: when the maximum resistance measured after the test needle is inserted is greater than the predetermined value, the intelligent control terminal controls the first driving motor and the second driving motor to stop working, and controls the electric lifting rod to stop working and restore the working state.

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