Cement product curing box and using method thereof

Abstract

The invention discloses a cement product curing box and a using method thereof.The curing box comprises a control system, an electric power system, an adjusting device, a moving device, a storage assembly and a mold assembly, the mold assembly is connected with the moving device, a box door is arranged on the curing box, and the curing box comprises a curing bin and a storage bin; the maintenance bin is arranged on one side of the storage bin, the moving device is arranged in the maintenance bin, and the storage assembly is arranged in the storage bin. According to the invention, the influence of the maintenance environment change on the test body can be reduced, and judgment is carried out, so that the test body detection result accuracy is improved; on the other hand, missing of the test body detection age can be effectively avoided, the automatic maintenance function is achieved, and human intervention is reduced. The test body marking degree can be improved, and the situation that the test body cannot be traced due to unclear or lost marks is avoided. And the water quantity monitoring and supplementing functions are achieved, and the water temperature in the mold can be controlled to be consistent with the temperature in the curing box.

Description

Technical Field

[0001] The invention belongs to the technical field of instruments and equipment, and in particular relates to a cement product curing box and a use method thereof. Background Art

[0002] According to the "Test Method for Strength of Cement Mortar (ISO Method)" (GB / T 17671-2021), after the cement mortar specimen is formed, it is moisture-cured together with the test mold for 24 hours. After demolding, it is cured in water to the strength age. The specimen is taken out of the water and a strength test is carried out.

[0003] At present, most of the cement mortar specimen curing boxes on the market only provide the temperature and humidity environment required for curing, that is, the temperature is maintained at 20℃±1℃, and the relative humidity is not less than 90%. During the curing process, the temperature and humidity must be recorded at least once every 4 hours. If the curing box has automatic control, the number of recordings can be reduced to twice a day.

[0004] The above technology has the following defects: 1. After the specimen is demolded, the marking is unclear or lost, resulting in the inability to trace the specimen; 2. Due to the mistakes of the test personnel, the specimen age required by the specification is missed, thus affecting the determination of the specimen strength value; 3. When the power outage during the maintenance process causes the instrument to stop operating and the power outage time is long, the impact of environmental changes on the specimen is not considered, thus affecting the accuracy of the specimen strength; 4. The degree of automation is low, all steps need to be operated or recorded by the test personnel, and the work efficiency is low.

[0005] The patent document with announcement number CN114660277A discloses a test method for quickly predicting the 28-day strength of cement. Specifically, after the cement mortar test block is cured and formed, it is demolded and promptly transferred to a high-temperature curing box for water bath curing. However, the data recording and test block movement of the curing equipment require manpower, and the accuracy is not as high as that of automatic control equipment.

[0006] The patent document with announcement number CN213703903U discloses a temperature and humidity self-controlled cement standard curing box, which improves its durability by improving the structural design of the box, but lacks the functions of automatic control and moving cement specimens. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a cement product curing box and a method for using the same.

[0008] The present invention is achieved through the following technical solutions.

[0009] The present invention provides a cement product curing box, which includes a control system, an electric power system, an adjusting device, a moving device, a storage assembly and a mold assembly. The electric power system is electrically connected to the control system, the adjusting device, the moving device and the storage assembly respectively. The mold assembly is connected to the moving device. A box door is provided on the curing box. The curing box includes a curing bin and a storage bin. The curing bin is provided on one side of the storage bin. The moving device is provided in the curing bin. The storage assembly is provided in the storage bin.

[0010] Preferably, the control system includes a display screen, an indicator light and a power button arranged on the wall of the maintenance box, and the display screen, the indicator light and the power button are electrically connected to the control system respectively.

[0011] Preferably, the mobile device is connected to the inner wall of the curing box through a support frame, and the mobile device includes a first track, a second track and a visual sensor. The first track is connected to the second track, a slider is provided on the first track, the first track is connected to the mold assembly through the slider, the first track is connected to the inner wall of the curing bin, the second track is connected to the mold assembly, and the visual sensor is provided on the inner wall of the curing box.

[0012] Preferably, the first track is bent in an S shape, a rotating joint is provided at the bending portion of the first track, and one end of the second track extends into the storage bin.

[0013] Preferably, the storage assembly includes a storage plate, an endless chain, a sprocket, a reduction motor and a bin door, the storage plate is connected to the inner wall of the storage bin, the sprocket is rotatably connected to the inner wall of the storage bin, the reduction motor is connected to the sprocket through the endless chain, the reduction motor is arranged in the storage bin, and the bin door is arranged on the storage bin.

[0014] Preferably, the mold assembly comprises a box-type mold and a disc-type mold, the box-type mold is connected to the moving device via a first buckle, and the disc-type mold is connected to the moving device via a second buckle.

[0015] Preferably, an electrode-type water level sensor is arranged on the upper part of the box-type mold, a first light strip and a temperature sensor are arranged in the middle part of the box-type mold, a first buckle and a first heating plate are arranged at the lower part of the box-type mold, and the first heating plate is arranged on the inner wall of the bottom of the box-type mold.

[0016] Preferably, a second light strip is arranged on one side of the disc-type mold, and the second buckle is arranged on the lower part of the disc-type mold.

[0017] A method for using a cement product curing box comprises the following steps:

[0018] 1) According to the size of the cement product specimen after molding and demolding, combined with the curing conditions, select the corresponding mold assembly; fix the mold assembly with the specimen placed on the slider of the first track, close the door of the curing box, and press the power button to start curing;

[0019] 2) Set the control system parameters through the display screen, enter the control system main interface, and control the curing box to start automatic curing;

[0020] When a new specimen is placed, the first track starts to move, so that the mold assembly with the new specimen can be placed in the curing box. On the other hand, when the specimen reaches the curing age, the first track moves the mold assembly to the second track, and then moves the specimen to the storage assembly.

[0021] When a specimen in the curing box reaches the curing age, the light strip on its mold assembly will light up; when the specimen moves to the visual sensor, it will automatically judge that only the specimen with the light on on the mold assembly can be moved to the storage assembly, and the remaining specimens will continue to move along the existing path until all specimens that have reached the age are moved to the storage assembly;

[0022] During the curing process, the system monitors the water level in the curing mold through an electrode-type water level sensor. When the water level drops below the electrode, the conductive path between the electrodes is disconnected. At this time, the valve is activated to replenish water in the box-type mold until it reaches the electrode position, so that the conductive path is restored to ensure that the specimen is always submerged;

[0023] 3) During the maintenance process, if a power outage occurs and causes the maintenance box to stop running, the maintenance box will automatically record information including the time of the power outage, the temperature and humidity values ​​in the maintenance box, and the water temperature value in the mold assembly during the power outage; after the power is restored to normal, the maintenance box will automatically start and continue the maintenance work, while recording information including the time of resumption of operation, the temperature and humidity values ​​in the maintenance box after resumption, and the water temperature value in the maintenance mold. The system automatically adjusts the relevant temperature and humidity to the set value according to the temperature and humidity difference before and after the power outage;

[0024] According to the power outage time and the resumption time, the control system automatically calculates the power outage duration, and combines the set maintenance age requirements and ambient temperature information to automatically analyze the temperature and humidity changes caused by the power outage and the impact of the power outage duration on the specimen maintenance; according to the judgment model, the corresponding judgment conclusion is proposed;

[0025] 4) When a new specimen is added for curing, the above steps 1) to 3) will be repeated;

[0026] 5) When all specimens in the curing box have been cured and taken out, turn off the power of the curing box and the curing box stops working.

[0027] Preferably, the curing conditions in step 1) include water curing and water mist curing, and the specimens cured in water use a box-type mold, and the specimens cured in water use a disc-type mold;

[0028] In the step 3), when a power outage occurs during the curing process, the system will automatically record the power outage time T1, the curing box temperature value F1 and humidity value H1, and the curing mold water temperature f1; when the power is restored to normal, the curing box will automatically resume operation and automatically record the time T2 and the curing box temperature value F2 and humidity value H2, and the curing mold water temperature f2; at the same time, the temperature and humidity in the curing box are automatically adjusted according to the temperature and humidity values ​​until the requirements are met;

[0029] In order to reduce the impact of changes in the curing environment on the specimen, the judgment parameters are defined, the judgment model is established, and the degree of impact on the specimen is judged; the judgment parameters include: power outage duration T, the calculation formula is: T = T2-T1, the unit is h; combined with the cement hydration reaction cycle, the curing age requirement Q, the power outage duration T, the curing mold water temperature f2 after returning to normal, the humidity in the curing box H2 after returning to normal, and the ambient temperature F a , establish a judgment model to determine the impact of power outage on the specimen, as follows:

[0030] Maintenance in water:

[0031] 1) When f2>F a When the curing water temperature is higher than the ambient temperature after the curing box is powered on again, the impact of the power outage on the specimen is small and can be ignored.

[0032] 2) When f2≤F a When, that is, when the curing water temperature is less than or equal to the ambient temperature after the curing box resumes power supply, Q≤3d, the judgment model is as follows:

[0033]

[0034] When 3d<Q<7d, the judgment model is as follows:

[0035]

[0036] When Q≥7d, the judgment model is as follows:

[0037]

[0038] Water mist maintenance situation:

[0039] 1) When H2≥90%, its judgment model is consistent with the water maintenance judgment model;

[0040] 2) When f2>F aWhen H2 is less than 90% and T is less than 6.0, the influence is small and can be ignored; when T is greater than or equal to 6.0, the influence is large and a verification test can be carried out;

[0041] 3) When f2≤F a When H2<90% and Q≤3d, the judgment model is as follows:

[0042]

[0043] When 3d<Q<7d, the judgment model is as follows:

[0044]

[0045] When Q>7d, the judgment model is as follows:

[0046]

[0047] The beneficial effects of the present invention are:

[0048] The present invention can reduce the impact of changes in the curing environment on the specimen, and make judgments, thereby improving the accuracy of the specimen test results; on the other hand, it can effectively avoid missing the specimen test age, and has the function of automated curing, reducing human intervention. In addition, the present invention can improve the specimen marking degree, avoiding the situation where the specimen cannot be traced due to unclear or lost markings. The water volume monitoring and replenishment module can avoid the situation where the specimen is not submerged in water; the mold has its own water temperature monitoring and heating function, which can ensure that when the specimen is cured in water, the curing water temperature is consistent with the ambient temperature in the curing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the structure of the present invention;

[0050] Figure 2 It is a side structural schematic diagram of the present invention;

[0051] Figure 3 It is a side structural schematic diagram of the present invention;

[0052] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0053] Figure 5 is a schematic diagram of a moving path of a mobile device of the present invention;

[0054] Figure 6 It is a structural schematic diagram of the box-type mold of the present invention;

[0055] Figure 7 It is a front view structural schematic diagram of the box-type mold of the present invention;

[0056] Figure 8It is a structural schematic diagram of the disc-type mold of the present invention;

[0057] Fig. 9 It is a front view structural schematic diagram of the disc-type mold of the present invention;

[0058] Fig.10 is a schematic diagram of a main menu page in the input and display module arrangement of the present invention;

[0059] Fig.11 It is a schematic diagram of an information entry page in the arrangement of the input and display modules of the present invention;

[0060] Fig.12 is a schematic diagram of a data display page in the arrangement of input and display modules of the present invention;

[0061] In the figure: 101-maintenance warehouse, 102-storage warehouse; 1-control system; 1.1-display screen; 1.2-power light; 1.3-power button; 2-power system; 3-adjustment device; 3.1-water injection pipe; 4-mechanical device; 4.1-support frame; 4.2-slider; 4.3-rotation joint; 4.4-first guide rail; 4.5-second guide rail; 4.6-visual sensor; 4.7-starting position; 4.8-judgment position; 5.1-storage plate; 5.2-circular chain; 5.3-sprocket; 5.4-reduction motor; 5.5-glass door; 6.1-temperature sensor; 6.2-humidity sensor; 7-box door; 8-box mold; 8.1-electrode water level sensor; 8.2-first light strip; 8.3-first buckle; 8.4-first heating plate; 9-disc mold; 9.1-second light strip; 9.2-second buckle. DETAILED DESCRIPTION

[0062] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0063] like Figures 1 to 12 As shown, a cement product curing box includes a control system 1, an electric system 2, an adjusting device 3, a mobile device 4, a storage component and a mold component. The electric system 2 is electrically connected to the control system 1, the adjusting device 3, the mobile device 4 and the storage component respectively. The electric system 2 can be connected to an external power supply and has the functions of voltage transformation and power distribution. This technology is a mature prior art and will not be described in detail in this application. The mold component is connected to the mobile device 4, and a box door 7 is provided on the curing box. The curing box includes a curing bin 101 and a storage bin 102. The curing bin 101 is provided on one side of the storage bin 102. The mobile device 4 is provided on the curing bin 101, and the storage component is provided in the storage bin 102.

[0064] The control system 1 comprises a display screen 1.1, an indicator light 1.2 and a power button 1.3 arranged on the wall of the curing box, and the display screen 1.1, the indicator light 1.2 and the power button 1.3 are respectively electrically connected to the control system 1. The display screen 1.1 can be an input and display module.

[0065] The mobile device 4 is connected to the inner wall of the curing box through a support frame 4.1, and includes a first track 4.4, a second track 4.5 and a visual sensor 4.6. The first track 4.4 and the second track 4.5 are connected, a slider 4.2 is arranged on the first track 4.4, the first track 4.4 is connected to the mold assembly through the slider 4.2, the first track 4.4 is connected to the inner wall of the curing chamber 101, the second track 4.5 is connected to the mold assembly, and the visual sensor 4.6 is arranged on the inner wall of the curing box. The first track 4.4 and the second track 4.5 can be collectively referred to as tracks.

[0066] The first track 4.4 is bent in an S shape, a rotating joint 4.3 is arranged at the bending part of the first track 4.4, and one end of the second track 4.5 extends into the storage bin 102.

[0067] The moving device 4 is provided with five layers. The moving path of the specimen in the single-layer moving device 4 moves clockwise along the S-shaped path moving direction 4.9. The moving devices 4 on each layer operate independently. The moving path of the specimen in the storage bin 102 adopts up and down vertical reciprocating motion.

[0068] The moving path after the specimen curing expires is the moving path when the specimen reaches the curing age and needs to be taken out for strength test. A visual sensor 4.6 is arranged beside the connection between the first track 4.4 and the second track 4.5 on each layer. The state of the light strip on the mold assembly is captured by the visual sensor 4.6 to determine whether the specimen needs to be moved to the storage bin 102. If necessary, the specimen enters the storage bin 102 along the second track 4.5. If not, the specimen moves through the rotating joint 4.3, continues to circulate in the path of the first track 4.4, and continues to be cured in the curing bin 101.

[0069] The first track 4.4 in the curing box is not always in a moving state. There are two situations in which the movement of the first track 4.4 is started as follows: ① When a new specimen is placed, it will move to facilitate the placement of the new specimen in the curing box; ② When the specimen reaches the curing age, the first track 4.4 moves and moves the specimen to the second track 4.5, and then enters the storage bin 102.

[0070] The condition for the first track 4.4 to stop moving: when a specimen in the curing box reaches the curing age, the light strip on its mold assembly will light up; when the specimen moves to the visual sensor 4.6, it will automatically determine that only the mold assembly with the light on can be moved to the storage bin 102, and the remaining specimens will continue to move along the first track 4.4 according to the existing path until all the specimens that have reached the age are moved to the storage bin 102, and then the first track 4.4 stops moving.

[0071] The mobile device 4 includes a mobile platform, a driving system and a positioning system, wherein the mobile platform includes a first track 4.4, a second track 4.5, a slider 4.2 and a rotary joint 4.3. The track is a ball screw guide with high transmission efficiency and positioning accuracy, which can meet the precise movement requirements of the straight line segment in the "S-shaped" path of the first track 4.4; the curve segment transition in the "S-shaped" path of the first track 4.4 uses a rotary shaft driven by a harmonic reducer to ensure the angle accuracy and smoothness of movement during steering.

[0072] The drive system includes a micro drive motor and a control circuit, which are integrated together to reduce wiring length and signal interference. A brushless DC motor is used with a dedicated motor driver chip, and the single-chip microcomputer is used to achieve precise speed regulation, steering control, and position feedback signal processing of the motor to achieve accurate tracking of the 4.4 "S-shaped" path of the first track.

[0073] The positioning system is realized by installing a high-precision grating ruler on the slider 4.2 or the support frame 4.1 to provide a real-time and accurate position feedback signal.

[0074] The storage assembly is provided with five access ports correspondingly, and the storage assembly access ports are connected to the second track 4.5. The mold assembly can slide into the storage assembly from the second track 4.5 by inertia through the access ports and be fixed by buckles. The storage assembly includes a storage plate 5.1, an endless chain 5.2, a sprocket 5.3, a reduction motor 5.4 and a door 5.5. The storage plate 5.1 is connected to the inner wall of the storage bin 102, the sprocket 5.3 is rotatably connected to the inner wall of the storage bin 102, the reduction motor 5.4 is connected to the sprocket 5.3 through the endless chain 5.2, the reduction motor 5.4 is arranged in the storage bin 102, and the door 5.5 is arranged on the storage bin 102. The mold assembly with the specimen can be taken out from the storage assembly by opening the door 5.5.

[0075] The specimen storage assembly in the storage bin 102 adopts a vertical circulation structure to realize the reciprocating movement of the specimen in the up and down directions in the storage bin 102, specifically including a steel structure support system (including a chain rotating track), a specimen storage plate 5.1, a transmission system (AC reduction motor 5.4, a circulating chain 5.2, and a sprocket 5.3), and the control system of the storage assembly is connected to the control system 1 of the curing box.

[0076] The area of ​​the curing warehouse 101 and the area of ​​the storage warehouse 102 are interconnected, which ensures the movement and transmission of the specimen on the one hand, and ensures that the temperature and humidity in the storage warehouse 102 are consistent with the temperature and humidity in the curing warehouse 101 on the other hand.

[0077] Overall structure of the curing box: The outer shell is made of aluminum alloy, and the overall size of the curing box (length × width × height) is 1500mm × 800mm × 1800mm.

[0078] In order to ensure that different cement products can be accommodated at the same time, the curing box is equipped with five layers of independent mechanical devices. Each layer of mechanical devices corresponds to a storage bin 102, and the storage bin 102 can move vertically up and down in a circular motion; when a specimen in a guide rail of a certain layer reaches the curing age, and the storage bin 102 of this layer is occupied by a specimen, the motor of the storage bin 102 is automatically started to move the vacant space to this layer.

[0079] The mold assembly comprises a box-type mold 8 and a disc-type mold 9. The box-type mold 8 is connected to the moving device 4 via a first buckle 8.3, and the disc-type mold 9 is connected to the moving device 4 via a second buckle 9.2.

[0080] An electrode type water level sensor 8.1 is arranged on the upper part of the box-type mold 8, a first light strip 8.2 and a temperature sensor 6.1 are arranged in the middle part of the box-type mold 8, a first buckle 8.3 and a first heating plate 8.4 are arranged at the lower part of the box-type mold 8, and the first heating plate 8.4 is arranged on the inner wall at the bottom of the box-type mold 8. The first heating plate 8.4 is a micro ceramic heating plate, which is used to heat the water in the mold assembly so that the water temperature is kept consistent with the high temperature in the curing box.

[0081] A second light strip 9.1 is arranged on one side of the disc mold 9, and the second light strip 9.1 can be arranged at the upper right corner of the disc mold 9, and the length is set to 100 mm. The second buckle 9.2 is arranged at the lower part of the disc mold 9. The first light strip 8.2 and the second light strip 9.1 can be collectively referred to as light strips when describing the mold assembly. The box mold 8 and the disc mold 9 are made of plastic.

[0082] The mold assembly can adapt to different cement products and curing conditions. When curing different specimens, only the corresponding mold needs to be installed; the mold size (length × width × height) includes, box-type mold 8: 150mm × 100mm × 200mm (cement mortar specimen), 100mm × 100mm × 100mm (cement mortar specimen) and 200mm × 200mm × 200mm (cement concrete specimen); disc mold 9: 150mm × 100mm × 20mm (cement mortar specimen) and 200mm × 200mm × 20mm (cement concrete specimen).

[0083] The temperature sensor 6.1 and the humidity sensor 6.2 are also arranged symmetrically in the center of the left and right sides of the curing box; they are arranged symmetrically up and down on the back side of the curing box, and the temperature sensor 6.1 and the humidity sensor 6.2 are 300mm away from the nearest edge of the curing box; the temperature sensor 6.1 is located at the top, and the humidity sensor 6.2 is located at the bottom. In addition, the temperature sensor 6.1 and the humidity sensor 6.2 are set at the center of the top of the curing box. The above arrangement of the temperature sensor 6.1 and the humidity sensor 6.2 can monitor the temperature of the entire curing box, ensure that the temperature and humidity in the curing box are uniform, and monitor changes in ambient temperature.

[0084] A method for using the cement product curing box according to claim 1, comprising the following steps:

[0085] 1) According to the size of the cement product specimen after molding and demoulding, combined with the curing conditions, select the corresponding mold assembly; fix the mold assembly with the specimen on the slider 4.2 at the starting position 4.7 of the first track 4.4, close the curing box door 7, and press the power button 1.3 to start curing;

[0086] 2) Set the control system 1 parameters through the display screen 1.1, enter the main interface of the control system 1, click the "information entry" option, and enter the sample number, cement water addition time, curing age requirement, curing environment, inspection personnel and other information in turn according to the needs; return to the main interface and click the "data display" option to enter the display interface, and a square box will appear at the corresponding position of the specimen. Click the square box to enter the positioning number of the mold. The number can be entered as text, numbers or a combination of them according to the input personnel; if the number information is not entered, the system will automatically number according to the serial number of the square box on the display screen;

[0087] Click the "Start Curing" option, and the curing box will start the automatic curing process. After the curing starts, the system will automatically jump to the display interface, and the relevant temperature and humidity data and the movement trajectory of the specimen in the curing box can be viewed intuitively through the display screen 1.1. At the same time, the mold assembly starts the micro ceramic heating plate at the bottom to heat slowly to ensure that the water temperature in the mold assembly is consistent with the curing temperature;

[0088] When a new specimen is placed, the first track 4.4 starts to move, so that the mold assembly with the new specimen can be placed in the curing box. On the other hand, when the specimen reaches the curing age, the first track 4.4 moves the mold assembly to the second track 4.5, and then moves the specimen to the storage assembly.

[0089] When a specimen in the curing box reaches the curing age, the light strip on its mold assembly will light up; when the specimen moves to the identification position 4.8, the control system 1 automatically judges through the visual sensor 4.6 that only the specimen with the light on on the mold assembly can be moved to the storage assembly, and the remaining specimens continue to move along the existing path until all specimens that have reached the age are moved to the storage assembly. When there are specimens in the storage assembly, the power light 1.2 flashes to remind the inspection personnel that a specimen has reached the curing age and needs to be taken out for strength testing;

[0090] If the curing age of a specimen has not yet expired, but the curing needs to be terminated, the light strip on the specimen mold assembly will be lit so that it can be moved directly to the storage assembly;

[0091] During the curing process, the system monitors the water level in the curing mold through the electrode water level sensor 8.1. When the water level drops below the electrode, the conductive path between the electrodes is disconnected. At this time, the valve is activated to replenish water in the box-type mold 8 until it reaches the electrode position, so that the conductive path is restored to ensure that the specimen is always submerged;

[0092] 3) During the maintenance process, if a power outage occurs and causes the maintenance box to stop running, the maintenance box will automatically record information including the time of the power outage, the temperature and humidity values ​​in the maintenance box, and the water temperature value in the mold assembly during the power outage; after the power is restored to normal, the maintenance box will automatically start and continue the maintenance work, while recording information including the time of resumption of operation, the temperature and humidity values ​​in the maintenance box after resumption, and the water temperature value in the maintenance mold. The system automatically adjusts the relevant temperature and humidity to the set value according to the temperature and humidity difference before and after the power outage;

[0093] According to the power outage time and the resumption time, the control system 1 automatically calculates the power outage duration, and automatically analyzes the temperature and humidity changes caused by the power outage and the influence of the power outage duration on the specimen maintenance in combination with the set maintenance age requirements and ambient temperature information; and proposes corresponding judgment conclusions according to the judgment model;

[0094] 4) When a new specimen is added for curing, the above steps 1) to 3) will be repeated;

[0095] When you need to obtain data during the operation of the curing box, such as the original records of temperature and humidity in the curing box, the movement trajectory and data of the specimens taken out of the curing box, etc., you can enter the print interface through the "Print Data" option on the main interface, select the corresponding number or the original record of temperature and humidity, and then connect the printer to print the selected data information;

[0096] 5) When all specimens in the curing box have been cured and taken out, turn off the power of the curing box and the curing box will stop working, otherwise the curing box will continue to work.

[0097] The curing conditions in step 1) include water curing and water mist curing. The specimens cured in water use a box-type mold 8, and the specimens cured in water mist use a disc-type mold 9;

[0098] In the step 3), when a power outage occurs during the curing process, the system will automatically record the power outage time T1, the curing box temperature value F1 and humidity value H1, and the curing mold water temperature f1; when the power is restored to normal, the curing box will automatically resume operation and automatically record the time T2 and the curing box temperature value F2 and humidity value H2, and the curing mold water temperature f2; at the same time, the temperature and humidity in the curing box are automatically adjusted according to the temperature and humidity values ​​until the requirements are met;

[0099] In order to reduce the impact of changes in the curing environment on the specimen, the judgment parameters are defined, the judgment model is established, and the degree of impact on the specimen is judged; the judgment parameters include: power outage duration T, the calculation formula is: T = T2-T1, the unit is h; combined with the cement hydration reaction cycle, the curing age requirement Q, the power outage duration T, the curing mold water temperature f2 after returning to normal, the humidity in the curing box H2 after returning to normal, and the ambient temperature F a , establish a judgment model to determine the impact of power outage on the specimen, as follows:

[0100] Maintenance in water:

[0101] 1) When f2>F a When the curing water temperature is higher than the ambient temperature after the curing box is powered on again, the impact of the power outage on the specimen is small and can be ignored.

[0102] 2) When f2≤F a When, that is, when the curing water temperature is less than or equal to the ambient temperature after the curing box resumes power supply, Q≤3d, the judgment model is as follows:

[0103]

[0104] When 3d<Q<7d, the judgment model is as follows:

[0105]

[0106] When Q≥7d, the judgment model is as follows:

[0107]

[0108] Water mist maintenance situation:

[0109] 1) When H2≥90%, its judgment model is consistent with the water maintenance judgment model;

[0110] 2) When f2>F aWhen H2 is less than 90% and T is less than 6.0, the influence is small and can be ignored; when T is greater than or equal to 6.0, the influence is large and a verification test can be carried out;

[0111] 3) When f2≤F a When H2<90% and Q≤3d, the judgment model is as follows:

[0112]

[0113] When 3d<Q<7d, the judgment model is as follows:

[0114]

[0115] When Q>7d, the judgment model is as follows:

[0116]

[0117] Water volume monitoring and replenishment module: The water level in the curing mold is monitored by the electrode-type water level sensor 8.1. When the water level drops below the electrode of the electrode-type water level sensor 8.1, the conductive path between the electrodes is disconnected. At this time, the valve is started to replenish water in the mold until it reaches the electrode position to restore the conductive path. The electrode-type water level sensor 8.1 is arranged symmetrically in the mold and installed 20 mm below the top surface of the mold to ensure that the specimen is always submerged.

[0118] The regulating device 3 has an external pipe for water inlet, and the regulating device 3 discharges water through the water injection pipe 3.1. The water outlet of the water injection pipe 3.1 is respectively arranged on the first track 4.4 of each layer. When a mold assembly moves below the water outlet of the water injection pipe 3.1, the valve of the regulating device 3 is activated to inject water of suitable temperature into the mold for water replenishment. The water output from the water injection pipe 3.1 can also flow directly into the curing box, thereby changing the humidity in the curing box.

[0119] Input and display module: The main interface of control system 1 includes: information entry, data display, start of maintenance and printing of data content, among which the information entry module includes the input of sample number, cement water addition time, maintenance age requirement, maintenance environment, testing personnel, specimen location number and other information;

[0120] The data display module includes the moving track of the specimen and its current position, the value of the temperature and humidity sensor in the curing box, the water temperature value in the curing mold, the shutdown time of the curing box, the ambient temperature and humidity, etc.; the curing starts, that is, the temperature in the curing box is used as the start option of the regulating device 3 of the humidity controller; the printing data includes: printing the original record of temperature and humidity, printing the data information generated during the curing process, and in order to ensure the validity of the data, the data cannot be downloaded, and can only be directly printed by connecting the printer via WiFi. The above input and display information are realized through the display screen 1.1.

[0121] Calculation and analysis module: implemented through single-chip microcomputer programming, including the following parts:

[0122] ① By extracting the input cement water addition time and curing age requirements, combined with the age range of the strength test specimen in the "Test Method for Strength of Cement Mortar (ISO Method)" (GB / T 17671-2021), the time range for reaching the corresponding age is automatically calculated, and the middle time of the time range is calculated, which is used as the control condition time for lighting the light strip on the mold assembly.

[0123] ② By setting a timer inside the single-chip microcomputer to realize the timing control of the light strip lighting function, when the control condition is met, the light strip automatically lights up, thereby realizing the function of the system automatically judging whether the specimen has reached the maintenance age.

[0124] ③ Through the data changes of the temperature and humidity sensor 6.1, the single chip microcomputer controls the opening of the regulating device 3 to ensure that the temperature and humidity of the curing box are within the set range, thereby providing curing conditions that meet the requirements. When the temperature and humidity reach stability (i.e. the temperature difference does not exceed 5% and the humidity difference does not exceed 2%), the temperature and humidity values ​​are recorded and saved every 6 hours as the original records of temperature and humidity.

[0125] ④ When the mold assembly into which the specimen is placed is buckled onto the slider 4.2, a square box appears at the corresponding position on the display screen 1.1. By clicking on the square box, the number corresponding to the mold can be entered. The number can be entered in words, numbers or a combination thereof at will according to the input personnel; if the number information is not entered, the system will automatically number according to the serial number lit in the square box on the display screen 1.1. This number is the unique code for identifying the position. From the time the specimen is placed in the curing box to the time the specimen is taken out from the storage bin 102, this number is used as the number for specimen traceability. The above operation can eliminate the process of marking the specimen, and avoid the situation where the specimen cannot be traced due to unclear or lost markings.

[0126] Example:

[0127] like Figures 1 to 12 As shown, a cement product curing box and a method of using the same, using a cement mortar specimen with sample number GYY-2024-007, after being formed and demolded, put it into a box mold 9 (size: 150mm×100mm×200mm), and fix it on a slider 4.2 by a buckle 9.2, close the box door, and start the power button 1.3.

[0128] Enter the main interface through display screen 1.1 and enter relevant information, such as cement water addition time: 10:00, curing age requirement: 14d, curing environment: temperature 20℃±1℃, relative humidity not less than 90%, then enter the display interface, click the square box at the corresponding position of the specimen, and enter the positioning number: GYY-2024-007-1, which is the specimen traceability number; after the information is entered, click the "Start Curing" option, the curing box automatically monitors the temperature and humidity in the box and the water temperature in the mold, and adjusts to the set value. The curing process and changes in related data can be intuitively viewed through the display interface.

[0129] When the specimen was cured for the 9th day, due to the municipal pipeline construction, there was a power outage from 22:30 on the same day to 21:30 the next day. During this period, the curing box stopped working. After the power supply was restored, it was known from the display interface of the curing box: before the power outage, the temperature in the curing box was 20.5℃, the humidity was 96%, and the water temperature in the mold was 20.4℃. After the curing box resumed working, the temperature in the curing box was 17.5℃, the humidity was 89%, the water temperature in the mold was 17.1℃, and the ambient temperature was 17.3℃.

[0130] According to the above content, the system restarts the temperature and humidity control device and adjusts the relevant temperature and humidity setting values ​​according to the temperature and humidity values ​​before and after the power outage; at the same time, the system automatically calculates the power outage duration: 11h>6h, combined with the curing age>7d, according to the judgment model: this power outage has a great impact on the curing of the specimen, and the subsequent strength test value must be increased by 1%.

[0131] After the curing box returns to normal, curing continues. At 10:00 on the 14th day, the light strip on the specimen mold automatically lights up, the track moves, and after being identified by the visual sensor 4.6, it enters the storage bin 1.2. At this time, the power light 1.2 flashes, prompting the inspection personnel that a specimen has reached the preset age and needs to be taken out for strength testing. After the monitoring personnel take out the specimen, the entire curing process ends.

[0132] If you need the temperature and humidity records of the curing box and the curing process data within 14 days of this curing, you can enter the printing interface through the "Print Data" option and connect the printer to print the relevant information.

Claims

1. A cement product curing box, characterized in that: The invention comprises a control system (1), an electric power system (2), an adjusting device (3), a moving device (4), a storage assembly and a mold assembly, wherein the electric power system (2) is electrically connected to the control system (1), the adjusting device (3), the moving device (4) and the storage assembly respectively, the mold assembly is connected to the moving device (4), a box door (7) is arranged on the curing box, the curing box comprises a curing bin (101) and a storage bin (102), the curing bin (101) is arranged on one side of the storage bin (102), the moving device (4) is arranged in the curing bin (101), and the storage assembly is arranged in the storage bin (102).

2. A cement product curing box as claimed in claim 1, characterized in that: The control system (1) comprises a display screen (1.1), an indicator light (1.2) and a power button (1.3) arranged on the wall of the maintenance box, and the display screen (1.1), the indicator light (1.2) and the power button (1.3) are respectively electrically connected to the control system (1).

3. A cement product curing box as claimed in claim 1, characterized in that: The mobile device (4) is connected to the inner wall of the curing box via a support frame (4.1), and the mobile device (4) comprises a first track (4.4), a second track (4.5) and a visual sensor (4.6), the first track (4.4) and the second track (4.5) are connected, a slider (4.2) is arranged on the first track (4.4), the first track (4.4) is connected to the mold assembly via the slider (4.2), the first track (4.4) is connected to the inner wall of the curing bin (101), the second track (4.5) is connected to the mold assembly, and the visual sensor (4.6) is arranged on the inner wall of the curing box.

4. A cement product curing box as claimed in claim 3, characterized in that: The first track (4.4) is bent in an S shape, a rotating joint (4.3) is provided at the bend of the first track (4.4), and one end of the second track (4.5) extends into the storage bin (102).

5. A cement product curing box as claimed in claim 1, characterized in that: The storage assembly comprises a storage plate (5.1), an endless chain (5.2), a sprocket (5.3), a reduction motor (5.4) and a bin door (5.5); the storage plate (5.1) is connected to the inner wall of the storage bin (102); the sprocket (5.3) is rotatably connected to the inner wall of the storage bin (102); the reduction motor (5.4) is connected to the sprocket (5.3) via the endless chain (5.2); the reduction motor (5.4) is arranged in the storage bin (102); and the bin door (5.5) is arranged on the storage bin (102).

6. A cement product curing box as claimed in claim 1, characterized in that: The mold assembly comprises a box-type mold (8) and a disc-type mold (9); the box-type mold (8) is connected to the moving device (4) via a first buckle (8.3); and the disc-type mold (9) is connected to the moving device (4) via a second buckle (9.2).

7. A cement product curing box as claimed in claim 6, characterized in that: An electrode-type water level sensor (8.1) is arranged on the upper part of the box-type mold (8), a first light strip (8.2) and a temperature sensor (6.1) are arranged in the middle part of the box-type mold (8), a first buckle (8.3) and a first heating plate (8.4) are arranged on the lower part of the box-type mold (8), and the first heating plate (8.4) is arranged on the inner wall of the bottom of the box-type mold (8).

8. A cement product curing box as claimed in claim 6, characterized in that: A second light strip (9.1) is arranged on one side of the disc-type mould (9), and a second buckle (9.2) is arranged on the lower part of the disc-type mould (9).

9. A method for using the cement product curing box according to any one of claims 1 to 8, characterized in that: The following steps are involved: 1) According to the size of the cement product specimen after molding and demoulding, and in combination with the curing conditions, a corresponding mold assembly is selected; the mold assembly in which the specimen is placed is fixed on a slider (4.2) of a first track (4.4), a curing box door (7) is closed, and a power button (1.3) is pressed to start curing; 2) Set the control system (1) parameters through the display screen (1.1), enter the main interface of the control system (1), and control the curing box to start automatic curing; When a new specimen is placed, the first track (4.4) starts to move, so that the mold assembly containing the new specimen can be placed in the curing box. On the other hand, when the specimen reaches the curing age, the first track (4.4) moves the mold assembly to the second track (4.5), and then moves the specimen to the storage assembly. When a specimen in the curing box reaches the curing age, the light strip on its mold assembly will light up; when the specimen moves to the visual sensor (4.6), it will automatically judge that only the specimen with the light on the mold assembly can be moved to the storage assembly, and the remaining specimens will continue to move along the existing path until all specimens that have reached the age are moved to the storage assembly; During the curing process, the system monitors the water level in the curing mold through the electrode water level sensor (8.1). When the water level drops below the electrode, the conductive path between the electrodes is disconnected. At this time, the valve is activated to replenish water in the box-type mold (8) until it reaches the electrode position, so that the conductive path is restored to ensure that the specimen is always submerged. 3) During the maintenance process, if a power outage causes the maintenance box to stop running, the maintenance box will automatically record the time of the power outage, the temperature and humidity values ​​in the maintenance box, and the water temperature value in the mold assembly; after the power is restored to normal, the maintenance box will automatically start and continue the maintenance work, while recording the time of resumption of operation, the temperature and humidity values ​​in the maintenance box after resumption, and the water temperature value in the maintenance mold. The system automatically adjusts the relevant temperature and humidity to the set value according to the temperature and humidity difference before and after the power outage; According to the power outage time and the resumption time, the control system (1) automatically calculates the power outage time, and automatically analyzes the temperature and humidity changes caused by the power outage and the influence of the power outage time on the specimen maintenance in combination with the set maintenance age requirement and the ambient temperature information; and proposes a corresponding determination conclusion according to the determination model; 4) When a new specimen is added for curing, the above steps 1) to 3) will be repeated; 5) When all specimens in the curing box have been cured and taken out, turn off the power of the curing box and the curing box stops working.

10. The method for using a cement product curing box according to claim 9, characterized in that: The curing conditions in step 1) include water curing and water mist curing, the specimens cured in water use a box-type mold (8), and the specimens cured in water mist use a disc-type mold (9); In the step 3), when a power outage occurs during the curing process, the system will automatically record the power outage time T1, the curing box temperature value F1 and humidity value H1, and the curing mold water temperature f1; when the power is restored to normal, the curing box will automatically resume operation and automatically record the time T2 and the curing box temperature value F2 and humidity value H2, and the curing mold water temperature f2; at the same time, the temperature and humidity in the curing box are automatically adjusted according to the temperature and humidity values ​​until the requirements are met; In order to reduce the impact of changes in the curing environment on the specimen, the judgment parameters are defined, the judgment model is established, and the degree of impact on the specimen is judged; the judgment parameters include: power outage duration T, the calculation formula is: T = T2-T1, the unit is h; combined with the cement hydration reaction cycle, the curing age requirement Q, the power outage duration T, the curing mold water temperature f2 after returning to normal, the humidity in the curing box H2 after returning to normal, and the ambient temperature F a , establish a judgment model to determine the impact of power outage on the specimen, as follows: Maintenance in water: 1) When f2>F a When the curing water temperature is higher than the ambient temperature after the curing box is powered on again, the impact of the power outage on the specimen is small and can be ignored. 2) When f2≤F a When, that is, when the curing water temperature is less than or equal to the ambient temperature after the curing box resumes power supply, Q≤3d, the judgment model is as follows: When 3d<Q<7d, the judgment model is as follows: When Q≥7d, the judgment model is as follows: Water mist maintenance situation: 1) When H2≥90%, its judgment model is consistent with the water maintenance judgment model; 2) When f2>F a When H2 is less than 90% and T is less than 6.0, the influence is small and can be ignored; when T is greater than or equal to 6.0, the influence is large and a verification test can be carried out; 3) When f2≤F a When H2<90% and Q≤3d, the judgment model is as follows: When 3d<Q<7d, the judgment model is as follows: When Q>7d, the judgment model is as follows:

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