Cement mortar setting time measuring device

Abstract

The invention relates to a cement mortar setting time measuring device which comprises a main machine, the interior of the main machine is divided into a detection area and a cleaning area, the detection area comprises a vertical movable main frame, a plurality of detection assemblies and a plurality of detachable layering plates, and the layering plates are installed in the detection area from top to bottom and divide the detection area into a plurality of subareas; the controller is used for providing different environment conditions; the detection assemblies are connected to the movable main frame in a sliding manner, and one detection assembly is arranged in each subarea; the detection assembly comprises a sample container, a top cover and a tray, a track groove I is formed in the tray, and when mortar is input into the sample container, the sample container can move along the track groove I to promote uniform input of the mortar; the top cover is used for sealing the sample container and can be vacuumized to promote discharge of bubbles in mortar; a cleaning assembly and a movable sub-frame are arranged in the cleaning area, and a test needle is mounted on the movable sub-frame and can be driven to detect the sample mortar in each sub-area.

Description

Technical Field

[0001] The present invention belongs to the technical field of measuring the setting time of mortar, and particularly relates to a device for measuring the setting time of cement mortar. Background Art

[0002] The setting time of cement mortar is a very important property index of cement. At present, this property is mainly detected by a Vicat apparatus. The Vicat apparatus includes a base, a cement container, a pressure gauge, a test needle and a bracket. The base supports the pressure gauge, the cement container is placed on the pressure gauge, the cement mortar is poured into the cement container, the bracket supports the test needle and can move the test needle vertically up and down. At regular intervals, the test needle is penetrated into the mortar, and the time and the corresponding test force are recorded.

[0003] The Vicat apparatus is a traditional detection device, which is manually operated and can only detect one cement sample at a time. The detection of each sample takes several hours. Moreover, the mortar is exposed to the indoor environment, and it can only reflect the setting performance of the mortar in the local environment. Therefore, the above traditional method has low test efficiency, is greatly affected by human factors, and has a single test environment. Summary of the Invention

[0004] In view of the above problems, the present invention provides a device for measuring the setting time of cement mortar, which includes a main body. The interior of the main body is divided into a detection area and a cleaning area. The detection area includes a vertical moving main frame, a plurality of detection components, and a plurality of detachable layered plates. The layered plates are installed in the detection area from top to bottom, dividing the detection area into several partitions for providing different environmental conditions. The detection components are slidably connected to the moving main frame, and there is one detection component in each partition.

[0005] The detection component includes a sample container, a top cover and a tray. The tray is provided with a first track groove. When the mortar is input into the sample container, the sample container can move along the first track groove to promote the uniform input of the mortar. The top cover is used to seal the sample container and can evacuate the air to promote the discharge of the bubbles in the mortar.

[0006] The cleaning area is provided with a cleaning component and a moving sub-frame. The test needle is installed on the moving sub-frame, and can lead the test needle to detect the sample mortar in each partition.

[0007] Optionally, the main body is columnar and vertical. There is a partition between the detection area and the cleaning area. The partition is provided with a plurality of openable communication plates, and the communication plates correspond to the partitions one by one, so that the test needle can enter and exit the detection area through the communication plates.

[0008] A part of the side wall of the main body corresponding to the detection area is provided with an openable operation door one for installing the detection components into the detection area. The operation door one is provided with a plurality of sealing strips, and the sealing strips correspond to the layered plates one by one. When the operation door one is closed, the sealing strips closely adhere to the outer edges of the corresponding layered plates, and can seal each partition.

[0009] Optionally, the moving main frame is in the shape of a cubic strip and is arranged on the side wall in the detection area that is far from and opposite to the first operation door, ensuring the stability of the moving main frame. Three track grooves two are provided on the three sides of the moving main frame facing the detection area, and the tray is slidably connected to the three track grooves two through the sliding part, making the connection between the tray and the moving main frame more stable.

[0010] Optionally, the tray includes a sliding part and a disk surface. The sliding part is in a concave shape and can be buckled on the three exposed sides of the moving main frame, and is slidably connected to the three track grooves two, driving the tray to move up and down along the moving main frame. The disk surface is fixedly connected to the sliding part and is horizontal. A track groove one is provided on the disk surface and is sunken downward, and the bottom surface of the sample container is slidably connected to the track groove one.

[0011] Further optionally, the top edge of the track groove one is flush with the upper surface of the disk surface, so that the bottom surface of the sample container fits the upper surface of the disk surface. The track groove one includes a straight connecting track one and a circular track one. The circular track one is concentrically arranged with the disk surface, and the connecting track one is connected between the center of the disk surface and the circular track one.

[0012] Further optionally, a vertical track groove three is provided on the middle side of the sliding part facing the first operation door. The top cover is slidably connected to the track groove three through a slider. The top cover is located above the disk surface and can move up and down along the track groove three to open or close the sample container.

[0013] Optionally, the moving sub-frame includes two horizontal tracks, a vertical track, and a connecting track two. The two horizontal tracks are respectively arranged at the top and bottom of the cleaning area. The top and bottom ends of the vertical track are respectively slidably connected to the two horizontal tracks, and the distance between the vertical track and the detection area can be adjusted. The connecting track two is horizontal, one end of which is slidably connected to the vertical track, and the other end is suspended and points to the detection area.

[0014] Optionally, a lifter, a positioning frame, and a rotation controller are provided on the lower surface of the layered plate. The telescopic end of the lifter is connected to the positioning frame, driving the positioning frame to move up and down. The positioning frame is connected to the connecting track two through a connecting track three, so that the pressure detector and the test needle can enter the positioning frame along the connecting track two and the connecting track three.

[0015] The positioning frame includes several concentric circular tracks two from the inside to the outside. The connecting track three communicates with each circular track two, so that the test needle can enter each circular track two.

[0016] The rotation controller can control the position of the test needle on the circular track two to specifically position the detection position of the mortar sample.

[0017] Further optionally, the lifter is a hydraulic device and is installed at a position corresponding to the center of the disk surface on the lower surface of the layered plate. The telescopic end of the hydraulic device is connected to the connecting disk, and the connecting disk is located above the positioning frame. The lower surface of the connecting disk is attached to and connected to the upper surface of the positioning frame. The connecting disk and the positioning frame are concentrically arranged, and the lifter drives the positioning frame to rise and fall smoothly through the connecting disk.

[0018] Further optionally, the rotation controller includes a motor and a control rod, the motor is arranged at the center of the upper surface of the connecting disk, the rotating shaft of the motor passes through the center of the connecting disk and the positioning frame in sequence, and then is connected to one end of the control rod, the control rod is arranged horizontally, and the other end of the control rod points to the outside of the positioning frame. The length of the control rod is not less than the maximum radius of the positioning frame, and is used to move the pressure detector on the positioning frame along any one of the circular tracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a cement mortar setting time measuring device;

[0020] Figure 2 It is a schematic diagram of the interior of the detection area;

[0021] Figure 3 is a schematic diagram of the detection component;

[0022] Figure 4 is a schematic diagram of the sliding part;

[0023] Figure 5 is a schematic diagram of the disk;

[0024] Figure 6 is a bottom view schematic diagram of the positioning frame;

[0025] Figure 7 is a schematic diagram of the layered plate and the rotation controller;

[0026] Figure 8 This is a schematic diagram of the interior of the cleaning area.

[0027] In the accompanying drawings, 1-main unit, 2-detection area, 3-cleaning area, 4-mobile main frame, 5-mobile sub-frame, 6-layered plate, 7-sample container, 8-top cover, 9-tray, 10-track slot one, 11-track slot two, 12-track slot three, 13-test needle, 14-communication board, 15-operating door one, 16-operating door two, 17-sliding part, 18-disk surface, 19-connecting track one, 20-connecting track two, 21-connecting track three, 22-circular track one, 23-circular track two, 24-fixing part, 25-rotating part, 26-pressure detector, 27-control lever, 28-motor, 29-lifter, 30-positioning frame, 31-connecting disk. DETAILED DESCRIPTION

[0028] This embodiment provides a device for measuring the setting time of cement mortar, as Figures 1-8 shown, which includes a main machine 1. The interior of the main machine 1 is divided into a detection area 2 and a cleaning area 3. The detection area 2 includes a vertical moving main frame 4, several detection components, and several detachable layered plates 6. The layered plates 6 are installed in the detection area 2 from top to bottom, dividing the detection area 2 into several partitions for providing different environmental conditions; the detection components are slidably connected to the moving main frame 4, and there is one detection component in each partition;

[0029] The detection component includes a sample container 7, a top cover 8, and a tray 9. A track groove 1 is provided on the tray 9. When the mortar is input into the sample container 7, the sample container 7 can move along the track groove 1 to promote the uniform input of the mortar; the top cover 8 is used to seal the sample container 7 and can evacuate the air to promote the discharge of air bubbles in the mortar;

[0030] A cleaning component and a moving sub-frame 5 are provided in the cleaning area 3. A test needle 13 is installed on the moving sub-frame 5, which can lead the test needle 13 to detect the sample mortar in each partition.

[0031] The device of the present invention can detect the setting time of multiple mortar samples. Different partitions can provide different detection environments. For example, the setting time of the same or different mortars at different temperatures and pressures can be detected, greatly improving the detection efficiency. Since the interval time between two detections of the sample is relatively long (half an hour or 15 minutes), it is sufficient to use one test needle 13 to detect between different partitions, saving costs. After each detection, the test needle 13 is moved to the cleaning area 3 for cleaning and drying, waiting for the next detection. The detection steps are completed inside the main machine 1, avoiding manual operation and improving the detection accuracy.

[0032] Optionally, the main machine 1 is columnar and vertical. There is a partition between the detection area 2 and the cleaning area 3. Several openable communication plates 14 are provided on the partition. The communication plates 14 correspond to the partitions one by one, so that the test needle 13 can enter and exit the detection area 2 through the communication plates 14;

[0033] On the side wall of the main machine 1 corresponding to the detection area 2, an openable operation door 15 is provided for installing the detection components into the detection area 2. Several sealing strips are provided on the operation door 15. The sealing strips correspond to the layered plates 6 one by one. When the operation door 15 is closed, the sealing strips closely adhere to the outer edge of the corresponding layered plate 6, capable of sealing each partition.

[0034] Optionally, an operation door 16 is provided on the side wall of the cleaning area 3 for cleaning and maintaining the cleaning component, the moving sub-frame 5, and the test needle 13 in the cleaning area 3. Preferably, the operation door 16 and the operation door 15 are provided on the side walls of different directions of the main machine 1.

[0035] Optionally, the movable main frame 4 is in the shape of a cuboid strip, and is arranged on the side wall in the detection area 2 that is far from the first operation door 15 and opposite to the first operation door 15 to ensure the stability of the movable main frame 4. Three side faces of the movable main frame 4 facing the detection area 2 are each provided with a second track groove 11, and the tray 9 is slidably connected to the three second track grooves 11 through the sliding part 17, so that the connection between the tray 9 and the movable main frame 4 is more stable.

[0036] Optionally, the tray 9 includes a sliding part 17 and a disk surface 18. The sliding part 17 is in a concave shape and can be buckled on the three exposed side faces of the movable main frame 4, and is slidably connected to the three second track grooves 11 to drive the tray 9 to move up and down along the movable main frame 4. The disk surface 18 is fixedly connected to the sliding part 17 and is horizontal. A first track groove 10 is provided on the disk surface 18 and is recessed downward, and the bottom surface of the sample container 7 is slidably connected to the first track groove 10.

[0037] Further optionally, the top edge of the first track groove 10 is flush with the upper surface of the disk surface 18, so that the bottom surface of the sample container 7 fits the upper surface of the disk surface 18. The first track groove 10 includes a straight connecting track 19 and a circular track 22. The circular track 22 is concentric with the disk surface 18, and the connecting track 19 is connected between the center of the disk surface 18 and the circular track 22.

[0038] Further optionally, a vertical third track groove 12 is provided on the middle side face of the sliding part 17 facing the first operation door 15. The top cover 8 is slidably connected to the third track groove 12 through a slider. The top cover 8 is located above the disk surface 18 and can move up and down along the third track groove 12 to open or close the sample container 7;

[0039] The slider includes a fixed part 24 and a rotating part 25. The fixed part 24 is detachably slidably connected to the third track groove 12. One end of the rotating part 25 is hinged to the fixed part 24, and the other end is fixedly connected to the top cover 8. The rotating part 25 drives the top cover 8 to rotate left and right with the fixed part 24 as a fulcrum, so that the top surface of the sample container 7 is exposed and can be detected by the test needle 13.

[0040] Further optionally, a through hole is provided in the center of the top cover 8, and a through hole air pipe is detachably connected to the vacuum pump outside the main machine 1, and can vacuum and defoam the sample container 7 filled with mortar.

[0041] Further optionally, the tray 9 further includes a plurality of support rods. The support rods are attached to the lower surface of the disk surface 18. One end of the support rod is connected to the outer side face of the sliding part 17, and the other end points to the first operation door 15. The plurality of support rods are evenly distributed below the disk surface 18 to improve the connection stability between the disk surface 18 and the sliding part 17.

[0042] Optionally, the sample container 7 is a hollow bowl shape, preferably a cylindrical shape, and the bottom surface of the sample container 7 is slidably connected to the first track groove 10.

[0043] During use, mortar is stirred in a conventional device. After meeting the experimental requirements, each sample container 7 is prepared for input. Open the operation door 15. At this time, all trays 9 are stacked together and are at the bottom of the detection area 2. The sample container 7 and the top cover 8 have not been installed yet. Install the sample container 7 on the tray surface 18 of the uppermost tray 9. The center of the sample container 7 is aligned with the center of the tray surface 18. The inside of the tray surface 18 can be hollow to accommodate the circuit or components for controlling the movement of the sample container 7 along the first track groove 10.

[0044] The prepared mortar is input into the uppermost sample container 7. At the same time, the sample container 7 rotates along the first track groove 10. The position of the mortar input pipe remains unchanged, and the tray surface 18 remains stationary. Only the sample container 7 rotates along the circular first track 22, so that the mortar continuously falls on different positions of the sample container 7. After the mortar falls into the sample container 7, it rotates with the sample container 7. At the same time, under the previous inertia, there will be a certain degree of relative movement between the mortar and the sample container 7. The amplitude of this relative movement depends on the rotation speed of the sample container 7. This relative movement is tangential, which is beneficial to the spreading of the mortar and promotes the bubbles in it to be squeezed or exposed to the air and burst, reducing the influence of the bubbles in the mortar on the setting of the mortar and the test of the test needle 13.

[0045] After the mortar input is completed, the sample container 7 stops rotating. Install the fixing part 24 on the third track groove 12. The top cover 8 covers the top surface of the sample container 7. Then seal the top cover 8 and the sample container 7. An air pipe is inserted into the through hole of the top cover 8 and connected to a vacuum pump to evacuate the inside of the sample container 7, further promoting the discharge of bubbles. The sample container 7 rotates again. At the same time, the sliding part 17 drives the tray surface 18 and the sample container 7 to rise along the moving main frame 4 to the uppermost partition area, and continuously evacuates the air. The sealing of the top cover 8 and the sample container 7 can adopt various forms. For example, a snap ring is used in cooperation with a sealing gasket.

[0046] After the detection component moves into place, remove the seal and the air pipe of the top cover 8. Horizontally install the delaminating plate below the detection component. Installation grooves for the delaminating plate are provided on the inner wall of the detection area 2 and the side surface of the moving main frame 4, and sealing gaskets are provided in the grooves. When the operation door 15 is closed, the sealing strip on the operation door 15 is correspondingly pressed against the delaminating plate, so that a sealed space is formed in this partition area, which is convenient for independently adjusting the temperature and pressure in this partition area. A temperature control device, a humidity control device, and a pressure gauge are provided in each partition area to facilitate the adjustment of the temperature, humidity, and pressure in the partition area. An air pipe and an air pump can be used to increase or decrease the pressure in the partition area.

[0047] The cleaning area 3 is also equipped with a temperature control device, a humidity control device, and a pressure gauge, which are convenient for adjusting the temperature, humidity, and pressure in the cleaning area 3. The air pipe and air pump can be used to increase or decrease the pressure in the cleaning area 3. Before the test needle 13 is about to detect a certain partition, the environment in the cleaning area is adjusted to be the same as that of the partition to be detected, and then the corresponding communication board is opened, and the test needle 13 enters the partition for detection. Since the volume of the cleaning area is much smaller than that of the detection area 2, the time required to change the internal environmental parameters of the cleaning area will not be too long. The detection environments of adjacent partitions in the detection area 2 are preferably similar to avoid too large fluctuations in the environmental parameters in the cleaning area. For example, the temperatures of three adjacent partitions are 25 °C, 30 °C, and 35 °C respectively, or the humidities of the three partitions simulate those in Northeast China, North China, and South China respectively, or the pressures of the three partitions simulate those in the North China Plain, the Northwest Plateau, and the Qinghai-Tibet Plateau respectively.

[0048] Optionally, the moving sub-frame 5 includes two horizontal rails, a vertical rail, and a connecting rail II 20. The two horizontal rails are respectively arranged at the top and bottom of the cleaning area 3. The top and bottom ends of the vertical rail are respectively slidably connected to the two horizontal rails, and the distance between the vertical rail and the detection area 2 can be adjusted; the connecting rail II 20 is horizontal, one end of which is slidably connected to the vertical rail, and the other end is suspended and pointed at the detection area 2.

[0049] Further optionally, the top of the test needle 13 is connected to a pressure detector 26, which is used to detect and record the force when the test needle 13 is inserted into the mortar sample. The pressure detector 26 is slidably connected to the connecting rail II 20 and can enter and exit the detection area 2 along with the connecting rail II 20.

[0050] Optionally, the cleaning assembly is arranged at the lower part of the cleaning area 3 and includes an ultrasonic water tank and a wiper. The test needle 13 moves down along with the connecting rail II 20 into the ultrasonic water tank for cleaning, and then the test needle 13 is taken out and moves on the sponge of the wiper to dry the moisture, waiting for the next detection. The ultrasonic water tank and the wiper can be regularly updated through the operation door II 16, and the moving sub-frame 5, the pressure detector 26, and the test needle 13 can be maintained.

[0051] Optionally, the lower surface of the layer plate 6 is provided with a lifter 29, a positioning frame 30, and a rotation controller. The telescopic end of the lifter 29 is connected to the positioning frame 30 to drive the positioning frame 30 to move up and down; the positioning frame 30 is docked with the connecting rail II 20 through a connecting rail III 21, so that the pressure detector 26 and the test needle 13 can enter the positioning frame 30 along the connecting rail II 20 and the connecting rail III 21;

[0052] The positioning frame 30 includes several concentric circular rails II 23 arranged from the inside to the outside. The connecting rail III 21 communicates with each circular rail II 23, so that the test needle 13 can enter each circular rail II 23;

[0053] The rotation controller can control the position of the test needle 13 on the circular track 23, specifically locating the detection position of the mortar sample.

[0054] Further optionally, the lifter 29 is a hydraulic device and is installed at a position corresponding to the center of the disk surface 18 on the lower surface of the layered plate 6. The telescopic end of the hydraulic device is connected to the connecting disk 31. The connecting disk 31 is above the positioning frame 30. The lower surface of the connecting disk 31 is attached to and connected to the upper surface of the positioning frame 30 to support the positioning frame. The connecting disk 31 is concentrically arranged with the positioning frame 30. The lifter 29 drives the positioning frame 30 to rise and fall smoothly through the connecting disk 31.

[0055] Further optionally, the rotation controller includes a motor 28 and a control rod 27. The motor 28 is arranged at the center of the upper surface of the connecting disk 31. The rotating shaft of the motor 28 passes through the center of the connecting disk 31 and the positioning frame 30 in sequence, and then connects to one end of the control rod 27. The control rod 27 is arranged horizontally, and the other end of the control rod 27 points to the outside of the positioning frame 30. The length of the control rod 27 is not less than the maximum radius of the positioning frame 30, and is used to move the pressure detector 26 on the positioning frame 30 along any one of the circular tracks 23.

[0056] The telescopic end of the hydraulic device can be connected in parallel with several connecting columns, which are used to connect to the corresponding positions of the connecting disk 31 and avoid the position of the motor 28.

[0057] When it is necessary to test the mortar sample in a certain partition, the environmental parameters in the cleaning area 3 are adjusted in advance to be the same as the environmental parameters in the tested partition. Then the corresponding communication board is opened, and the vertical track is translated toward the testing area 2 along the horizontal track, so that the connecting track 20 leads the pressure detector 26 and the test needle 13 to translate toward the testing area 2, and the connecting track 20 enters the corresponding partition through the opening exposed after the communication board is opened, and the connecting track 20 is connected with the connecting track 3 21, and the pressure detector 26 and the test needle 13 are moved to the positioning frame 30 along the connecting track 20 and the connecting track 3 21.

[0058] According to the position of the mortar sample that needs to be tested, the pressure detector 26 and the test needle 13 are moved to the corresponding circular track 2 23. The motor 28 drives the pressure detector 26 to rotate a specific angle along the corresponding circular track 2 23 through the control rod 27, so that the test needle 13 reaches the top of the position that needs to be tested. The lifter 29 controls the positioning frame 30 to descend until the test needle 13 is inserted into the mortar to the specified depth. The pressure detector 26 detects and records the force of the test needle 13 insertion. Then the positioning frame 30 is raised, and the control rod 27 pushes the test needle 13 back to the connecting track 3 21. The test needle 13 then returns to the cleaning area 3 along the original route, and the communication board is closed. The test needle 13 is lowered into the ultrasonic water tank for cleaning, and then wiped, waiting for the next test.

[0059] The design structures of the positioning frame 30 and the rotation controller enable the test needle 13 to move along the straight connecting track two 20 / three only under electromagnetic or electrical signal control, without the need to design complex controls for the test needle 13 to move along each circular track two 23, reducing the complexity of the track movement control. The pressure detector 26 is moved by a suitable arc length by the rotatable control rod 27 to reach the target detection position.

[0060] The movement and rotation of all tracks, track grooves and corresponding connecting components are realized and controlled by existing technologies.

Claims

1. A device for measuring the setting time of cement mortar, characterized in that, It includes a main machine. The interior of the main machine is divided into a detection area and a cleaning area. The detection area includes a vertical moving main frame, several detection components, and several detachable layered plates. The layered plates are installed in the detection area from top to bottom, dividing the detection area into several partitions for providing different environmental conditions. The detection components are slidably connected to the moving main frame, and there is one detection component in each partition. The detection component includes a sample container, a top cover, and a tray. The tray is provided with a first track groove. When mortar is input into the sample container, the sample container can move along the first track groove to promote the uniform input of mortar. The top cover is used to seal the sample container and can be evacuated to promote the discharge of air bubbles in the mortar. A cleaning component and a moving sub-frame are provided in the cleaning area. A test needle is installed on the moving sub-frame, which can lead the test needle to detect the sample mortar in each partition.

2. The device for measuring the setting time of cement mortar according to claim 1, characterized in that The main machine is columnar and vertical. There is a partition between the detection area and the cleaning area. The partition is provided with several openable communication plates, which correspond to the partitions one by one, so that the test needle can enter and exit the detection area through the communication plates. An openable operation door one is provided on the side wall of the main machine corresponding to the detection area for installing the detection components into the detection area. The operation door one is provided with several sealing strips, which correspond to the layered plates one by one. When the operation door one is closed, the sealing strips closely adhere to the outer edges of the corresponding layered plates, capable of sealing each partition.

3. The device for measuring the setting time of cement mortar according to claim 2, wherein, The moving main frame is cube-shaped and long, and is provided on the side wall of the detection area far from and opposite to the operation door one to ensure the stability of the moving main frame. Three track grooves two are provided on the three sides of the moving main frame facing the detection area. The tray is slidably connected to the three track grooves two through a sliding part, making the connection between the tray and the moving main frame more stable.

4. The device for measuring the setting time of cement mortar according to claim 3, wherein, The tray includes a sliding part and a disk surface. The sliding part is concave-shaped and can be buckled on the three exposed sides of the moving main frame and is slidably connected to the three track grooves two, driving the tray to move up and down along the moving main frame. The disk surface is fixedly connected to the sliding part and is horizontal. The disk surface is provided with a downwardly concave first track groove, and the bottom surface of the sample container is slidably connected to the first track groove.

5. The device for measuring the setting time of cement mortar according to claim 4, wherein The top edge of the first track groove is flush with the upper surface of the disk surface, so that the bottom surface of the sample container fits the upper surface of the disk surface. The first track groove includes a straight connecting track one and a circular track one. The circular track one is concentrically arranged with the disk surface, and the connecting track one is connected between the center of the disk surface and the circular track one.

6. The device for measuring the setting time of cement mortar according to claim 3, characterized in that, A vertical third track groove is provided on the middle side of the sliding part facing the operation door one. The top cover is slidably connected to the third track groove through a slider. The top cover is located above the disk surface and can move up and down along the third track groove to open or close the sample container.

7. The device for measuring the setting time of cement mortar according to claim 1, characterized in that, The moving sub-frame includes two horizontal tracks, a vertical track, and a connecting track two. The two horizontal tracks are respectively provided at the top and bottom of the cleaning area. The top and bottom ends of the vertical track are respectively slidably connected to the two horizontal tracks, capable of adjusting the distance between the vertical track and the detection area. The connecting track two is horizontal. One end of it is slidably connected to the vertical track, and the other end is suspended and points to the detection area.

8. The device for measuring the setting time of cement mortar according to claim 7, wherein, The lower surface of the layered board is provided with a lifter, a positioning frame and a rotation controller. The telescopic end of the lifter is connected to the positioning frame to drive the positioning frame to move up and down. The positioning frame is connected to the connecting track two through the connecting track three, so that the pressure detector and the test needle can enter the positioning frame along the connecting track two and the connecting track three. The positioning frame includes several concentric circular tracks two from the inside to the outside. The connecting track three communicates with each circular track two, so that the test needle can enter each circular track two. The rotation controller can control the position of the test needle on the circular track two to specifically position the detection position of the mortar sample.

9. The device for measuring the setting time of cement mortar according to claim 8, characterized in that, The lifter is a hydraulic device and is installed at the position corresponding to the center of the disk surface on the lower surface of the layered board. The telescopic end of the hydraulic device is connected to the connecting disk. The connecting disk is located above the positioning frame. The lower surface of the connecting disk fits and connects to the upper surface of the positioning frame. The connecting disk and the positioning frame are concentrically arranged. The lifter drives the positioning frame to lift smoothly through the connecting disk.

10. The device for measuring the setting time of cement mortar according to claim 9, characterized in that, The rotation controller includes a motor and a control rod. The motor is arranged at the center of the upper surface of the connecting disk. The rotating shaft of the motor sequentially passes through the center of the connecting disk and the positioning frame, and then connects to one end of the control rod. The control rod is horizontally arranged. The other end of the control rod points to the outside of the positioning frame. The length of the control rod is not less than the maximum radius of the positioning frame, and is used to move the pressure detector on the positioning frame along any one of the circular tracks two.

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