A device for quickly determining water absorption rate of concrete coarse aggregate

Abstract

The utility model relates to coarse aggregate water absorption determination technical field discloses a kind of concrete coarse aggregate water absorption rate rapid determination device, including shell, recess is opened in the front side of shell, the inside bottom of recess is fixedly connected with support, the bottom of support is fixedly connected with motor, the output end of motor is passed through support and is fixedly connected with rotating rod, the top of rotating rod is fixedly connected with carousel, the top of carousel is provided with detection disc, the inside top of recess is fixedly connected with telescopic link, another end of telescopic link is rotatably connected with top cap. In the utility model, top cap covers detection disc by telescopic link, while motor drives rotating rod and carousel rotation, then start heating pipe to heat coarse aggregate in detection disc, accelerate coarse aggregate dehydration, realize the dehydration treatment of concrete coarse aggregate quickly and evenly, and the water absorption rate of concrete coarse aggregate can be more accurately and quickly determined.

Description

Technical Field

[0001] This utility model relates to the field of coarse aggregate water absorption measurement technology, and in particular to a rapid measurement device for the water absorption rate of concrete coarse aggregate. Background Technology

[0002] Coarse aggregate in concrete refers to rock particles, including crushed stone and pebbles, which act as the skeleton in concrete, supporting the entire concrete structure. The rapid water absorption rate tester for coarse aggregate is a professional device used to quickly and accurately measure the water absorption rate of coarse aggregate. By placing the coarse aggregate sample into an immersion container and immersing it under specific temperature and time conditions, the weight change of the aggregate before and after immersion is accurately measured using a weighing system, thereby quickly calculating the water absorption rate of the coarse aggregate.

[0003] A search revealed Chinese Patent Publication No. CN218098737U, a device for determining the saturated surface-dry water absorption rate of fine aggregate, belonging to the field of type testing technology. This utility model includes a test chamber. The test chamber has a detachable top cover with multiple air inlets evenly and symmetrically distributed on it. All air inlets are connected to an air inlet pipe. The top cover also has an air outlet, a temperature sensor, and a humidity sensor. Both sides of the test chamber have slides, each with a handle that can move along it. All handles are connected to a U-shaped scraper at the inner end of the test chamber, with the bottom of the scraper touching the bottom of the chamber. This utility model ensures test accuracy, improves test efficiency, and saves personnel time and economic costs. However, in actual use, the device only dries the interior through the air inlets, leaving some aggregate at the bottom un-dried. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a rapid water absorption rate testing device for coarse aggregate in concrete, which aims to improve the problem in the existing technology where the device only air-dries and dehydrates the interior through the air vent, resulting in some aggregate at the bottom not being able to be dehydrated.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid water absorption rate testing device for coarse aggregate in concrete, comprising a shell, a groove on the front side of the shell, a bracket fixedly connected to the bottom inner side of the groove, a motor fixedly connected to the bottom of the bracket, the output end of the motor passing through the bracket and fixedly connected to a rotating rod, a turntable fixedly connected to the top of the rotating rod, a detection plate on the top of the turntable, a telescopic rod fixedly connected to the top inner side of the groove, a top cover rotatably connected to the other end of the telescopic rod, a circular ring plate slidably connected to the outer wall of the top cover, a heating tube fixedly connected to the top of the top cover, a protective cover fixedly connected to the top of the heating tube, a circular ring groove on the bottom of the circular ring plate, and multiple water outlet holes equidistantly opened around the outer walls of the circular ring plate and the detection plate, and a clamping mechanism on the top of the turntable.

[0006] The above technical solution allows for the following steps: When using this device to determine the water absorption rate of coarse concrete aggregate, the coarse concrete aggregate to be tested is first placed on the testing disc. The telescopic rod then extends downwards, causing the top cover, which is rotatably connected to it, to move downwards until it covers the testing disc. At this point, the annular plate slidably connected to the outer wall of the top cover engages with the testing disc. Simultaneously, the motor is started, and its output rotates, causing the rotating rod, which is fixedly connected to it, to rotate. The turntable at the top of the rotating rod also rotates, thus causing the testing disc placed on top of the turntable to rotate. During the testing process, the heating pipe fixedly connected to the top of the top cover is activated. The heating pipe generates heat, which heats the coarse concrete aggregate in the testing disc, accelerating the dehydration of the coarse concrete aggregate. By detecting the mass change of the coarse concrete aggregate before and after the water is drained, the water absorption rate of the coarse concrete aggregate can be quickly determined.

[0007] As a further description of the above technical solution:

[0008] The clamping mechanism includes multiple movable slots, which are equidistantly arranged around the top of the base. A spring is fixedly connected to one side of each movable slot, and a clamping plate is fixedly connected to one end of each spring. Two locking blocks are fixedly connected to one side of each clamping plate. Multiple locking slots are equidistantly arranged on the outer wall of the detection plate and the annular plate.

[0009] The above technical solution works as follows: When placing the testing disc, the operator needs to manually push the clamping plate out of the moving slot. During the pushing process, the clamping plate will compress the spring, causing the spring to be in a contracted state and accumulate elastic potential energy. After the testing disc is accurately placed in the appropriate position on the base, the operator releases the clamping plate. At this time, due to the elastic restoring force, the spring will extend towards the testing disc, thereby pushing the clamping plate to move. Under the push of the spring, the locking block will accurately lock into the corresponding locking groove on the outer wall of the testing disc. In this way, the testing disc is tightly clamped by the clamping plate and firmly fixed on the base, avoiding shaking or displacement during subsequent operations.

[0010] As a further description of the above technical solution:

[0011] Limiting blocks are fixedly connected to the left and right sides of the inner side of the annular plate, and limiting grooves are opened on the left and right sides of the outer wall of the top cover.

[0012] The above technical solution allows for the positioning and limiting of the top cover through the cooperation of the limiting block and the limiting groove, ensuring the accurate installation position of the top cover in the device and preventing the top cover from shaking or shifting during device operation.

[0013] As a further description of the above technical solution:

[0014] A fixing plate is fixedly connected to the top rear side of the outer casing, and a switch is fixedly connected to the top right side of the fixing plate. The switch is electrically connected to the motor and the telescopic rod respectively.

[0015] The above technical solution is used to control the start and stop of the motor and the telescopic rod, as well as their operating status, so that operators can control the relevant actions of the device according to experimental requirements.

[0016] As a further description of the above technical solution:

[0017] A display is fixedly connected to the top left side of the fixing plate, and a protective shell is fixedly connected to the outer wall of the display.

[0018] Through the above technical solution: the display is used to show various data and information during the determination of water absorption rate of coarse aggregate in concrete, and the protective shell protects the display to prevent damage to the display or affect its normal display.

[0019] As a further description of the above technical solution:

[0020] A rotating door is rotatably connected to the front side of the outer casing, and a handle is fixedly connected to the right end of the front side of the rotating door.

[0021] The above technical solution allows operators to easily open or close the device and facilitates operation inside the device. The handle makes it easy for operators to grip and rotate the door, providing a point of force for opening and closing the door.

[0022] As a further description of the above technical solution:

[0023] An observation window is provided on the front side of the revolving door, and a sealing frame is fixedly connected to the outer wall of the front side of the observation window.

[0024] The above technical solution allows operators to directly observe the working conditions inside the device without opening the rotating door, while the sealing frame ensures the airtightness between the observation window and the rotating door.

[0025] As a further description of the above technical solution:

[0026] The outer wall of the turntable is provided with multiple sliding grooves at equal intervals, and the bottom sides of the multiple clamping plates are fixedly connected with sliders, and the multiple sliders are respectively slidably connected to the interior of the corresponding sliding grooves.

[0027] The above technical solution allows the slider and the groove to slide along the outer wall of the turntable, providing guidance and a track for the movement of the clamping plate.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the top cover is driven by the telescopic rod to cover the detection plate, so that the circular plate cooperates with the detection plate. At the same time, the motor drives the rotating rod and the turntable to rotate, so that the detection plate rotates. Then, the heating tube is activated to heat the coarse aggregate in the detection plate. Under the synergistic effect of rotation and heating, the dewatering of coarse aggregate is accelerated, and the coarse aggregate of concrete is dewatered quickly and evenly. This ensures the high efficiency and stability of the detection process and can more accurately and quickly determine the water absorption rate of coarse aggregate of concrete.

[0030] 2. In this utility model, the clamping plate is manually pushed by the staff to compress the spring and accumulate elastic potential energy. After the test plate is placed, the clamping plate is released, and the spring extends to push the clamping plate to move, so that the locking block is locked into the slot on the outer wall of the test plate. Throughout the process, the elastic force of the spring and the cooperation of the locking block and slot are realized, which realizes the stable fixation of the test plate on the base. This effectively avoids shaking or displacement during subsequent operations such as motor rotation and heating tube heating, and ensures the accuracy and stability of the measurement work. Attached Figure Description

[0031] Figure 1 This is a perspective view of a device for rapidly determining the water absorption rate of coarse aggregate in concrete, as proposed in this utility model.

[0032] Figure 2 This is a side view of the structure of a device for rapidly determining the water absorption rate of coarse aggregate in concrete, as proposed in this utility model.

[0033] Figure 3 This is a structural exploded view of a device for rapidly determining the water absorption rate of coarse aggregate in concrete, as proposed in this utility model.

[0034] Figure 4 This is a partial structural schematic diagram of a rapid water absorption rate testing device for coarse aggregate in concrete proposed in this utility model.

[0035] Figure 5 This is a structural breakdown diagram of the clamping mechanism of a rapid water absorption rate testing device for coarse aggregate in concrete proposed in this utility model.

[0036] Legend:

[0037] 1. Outer shell; 2. Clamping mechanism; 201. Moving groove; 202. Spring; 203. Clamping plate; 204. Locking block; 205. Locking slot; 3. Groove; 4. Bracket; 5. Motor; 6. Rotating rod; 7. Turntable; 8. Detection plate; 9. Telescopic rod; 10. Top cover; 11. Circular plate; 12. Heating tube; 13. Protective cover; 14. Circular groove; 15. Water outlet; 16. Limiting block; 17. Limiting groove; 18. Fixing plate; 19. Switch; 20. Display; 21. Protective shell; 22. Rotating door; 23. Handle; 24. Observation window; 25. Sealing frame; 26. Slide groove; 27. Slider. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a rapid water absorption rate testing device for coarse aggregate in concrete, comprising a housing 1. A groove 3 is provided on the front side of the housing 1, which accommodates and installs important internal components, providing specific installation space. A bracket 4 is fixedly connected to the bottom inner side of the groove 3, supporting a motor 5 and ensuring its stable installation. The motor 5 is fixedly connected to the bottom of the bracket 4, serving as a power source to power the rotation of a rotating rod 6. The output end of the motor 5 passes through the bracket 4 and is fixedly connected to the rotating rod 6, which transmits the power from the motor 5 to the turntable. 7. To enable rotation, a turntable 7 is fixedly connected to the top of the rotating rod 6. The turntable 7 is used to place the test tray 8, and its rotation drives the test tray 8 to rotate as well. The test tray 8 is set on the top of the turntable 7. The test tray 8 is used to place concrete coarse aggregate samples and is the main place for water absorption testing. A telescopic rod 9 is fixedly connected to the top of the inner side of the groove 3. The telescopic rod 9 can adjust the height of the top cover 10 to facilitate the placement and removal of the test tray 8. The other end of the telescopic rod 9 is rotatably connected to the top cover 10. The top cover 10 can close the test tray 8 to create a relatively closed testing environment. A circular plate is slidably connected to the outer wall of the top cover 10. 11. The annular plate 11 can slide on the top cover 10 to cooperate with the detection disc 8. A heating tube 12 is fixedly connected to the top of the top cover 10. The heating tube 12 is used to heat the coarse aggregate in the detection disc 8 to accelerate moisture evaporation and facilitate rapid determination of water absorption rate. A protective cover 13 is fixedly connected to the top of the heating tube 12 to protect it from external impact and damage. An annular groove 14 is opened at the bottom of the annular plate 11. The annular groove 14 can collect and guide moisture to a certain extent. Multiple water outlets are equidistantly opened around the outer walls of the annular plate 11 and the detection disc 8. Hole 15, water outlet 15 is used to drain excess water and ensure a relatively dry testing environment. The top of the turntable 7 is provided with a clamping mechanism 2, which is used to fix the testing plate 8 and prevent it from shaking or shifting during rotation. Limiting blocks 16 are fixedly connected to the left and right sides of the inner side of the annular plate 11. The limiting blocks 16 cooperate with the limiting grooves 17 of the top cover 10 to limit the position of the annular plate 11 and ensure its installation accuracy and stability. Limiting grooves 17 are opened on the left and right sides of the outer wall of the top cover 10. The limiting grooves 17 cooperate with the limiting blocks 16 to ensure the accurate position of the annular plate 11 and the top cover 10.

[0040] Specifically, when using this device to determine the water absorption rate of coarse aggregate in concrete, the coarse aggregate to be tested is first placed on the testing disc 8. The telescopic rod 9 extends downward, causing the top cover 10, which is rotatably connected to it, to move downward until the top cover 10 covers the testing disc 8. At this time, the annular plate 11 slidably connected to the outer wall of the top cover 10 cooperates with the testing disc 8. Simultaneously, the motor 5 is started, and the output end of the motor 5 rotates, driving the rotating rod 6, which is fixedly connected to it, to rotate. The turntable 7 at the top of the rotating rod 6 also rotates accordingly, thus causing the testing disc 8 placed on top of the turntable 7 to rotate. During the testing process, the heating tube 12 fixedly connected to the top of the top cover 10 is activated, and the heating tube 12 generates heat. The coarse concrete aggregate in the testing pan 8 is heated to accelerate its dehydration. By detecting the change in mass of the coarse concrete aggregate before and after the water is discharged, the water absorption rate of the coarse concrete aggregate can be quickly determined. When the top cover 10 is lowered by the telescopic rod 9 and engages with the annular plate 11, the limiting block 16 will slide into the limiting groove 17 to ensure the accurate relative position of the annular plate 11 and the top cover 10, and to prevent the annular plate 11 from shifting in the horizontal direction.

[0041] Reference Figure 5The clamping mechanism 2 includes multiple movable slots 201, which provide space for the movement of springs 202 and clamping plates 203, allowing them to move within a certain range. The multiple movable slots 201 are equidistantly arranged around the top of the turntable 7, ensuring uniform clamping of the detection disc 8. A spring 202 is fixedly connected to one side of each movable slot 201. The spring 202 is elastic and provides an inward pushing force to the clamping plate 203, allowing it to tightly clamp the detection disc 8. One end of each spring 202 is fixedly connected to the clamping plate 203, which directly contacts the detection disc 8. The springs 202 fix the detection disc 8 to the turntable 7. Two locking blocks 204 are fixedly connected to one side of each clamping plate 203, used for engaging with... The groove 205 further enhances the fixing effect on the detection disk 8 and the annular plate 11. Multiple slots 205 are equidistantly provided on the outer walls of the detection disk 8 and the annular plate 11. The slots 205 cooperate with the locking block 204 to achieve accurate locking and fixing of the detection disk 8 and the annular plate 11. Multiple sliding grooves 26 are equidistantly provided on the outer wall of the turntable 7. The sliding grooves 26 provide a track for the sliding of the slider 27, ensuring the stability and accuracy of the movement of the clamping plate 203. Slider 27 is fixedly connected to both sides of the bottom of multiple clamping plates 203. The slider 27 cooperates with the sliding groove 26 to allow the clamping plate 203 to slide smoothly along the sliding groove 26. Multiple sliders 27 are respectively slidably connected to the interior of the corresponding sliding groove 26 to ensure that the clamping plate 203 will not deviate during the movement, and accurately clamping and releasing the detection disk 8.

[0042] Specifically, when placing the detection tray 8, the operator needs to manually push the clamping plate 203 outward from the moving slot 201. During this pushing process, the clamping plate 203 compresses the spring 202, causing the spring 202 to be in a contracted state and accumulate elastic potential energy. After the detection tray 8 is accurately placed in the appropriate position on the outer casing 1, the operator releases the clamping plate 203. At this time, due to the elastic restoring force, the spring 202 will extend towards the detection tray 8, thereby pushing the clamping plate 203 to move. Under the push of the spring 202, the locking block 204 will accurately engage with the detection tray 8. The detection plate 8 is clamped in the slot 205 on the outer wall of the detection plate 8. In this way, the detection plate 8 is tightly clamped by the clamping plate 203 and firmly fixed to the outer shell 1, so as to avoid shaking or displacement during subsequent operation. When the clamping plate 203 moves under the push of the spring 202, the locking block 204 will slide into the slot 205, firmly fixing the detection plate 8 and the annular plate 11 together. The cooperation between the slider 26 and the slide groove 27 allows the clamping plate 203 to slide along the outer wall of the turntable 7, providing guidance and track for the movement of the clamping plate 203.

[0043] Reference Figure 1 , Figure 2 and Figure 5A fixing plate 18 is fixedly connected to the top rear side of the outer shell 1. A switch 19 is fixedly connected to the top right side of the fixing plate 18. The switch 19 is electrically connected to the motor 5 and the telescopic rod 9 respectively. A display 20 is fixedly connected to the top left side of the fixing plate 18. A protective shell 21 is fixedly connected to the outer wall of the display 20. A rotating door 22 is rotatably connected to the front side of the outer shell 1. A handle 23 is fixedly connected to the front right end of the rotating door 22. An observation window 24 is opened on the front side of the rotating door 22. A sealing frame 25 is fixedly connected to the front outer wall of the observation window 24.

[0044] Specifically, the device is used to control the start and stop of the motor 5 and the telescopic rod 9, as well as their operating status, so that the operator can control the relevant actions of the device according to the experimental requirements. The display 20 is used to display various data and information during the determination of the water absorption rate of concrete coarse aggregate. The protective shell 21 protects the display 20 and prevents damage to the display 20 or affecting its normal display. The rotating door 22 makes it easy for the operator to open or close the device and facilitates operation inside the device. The handle 23 makes it easy for the operator to grip and rotate the rotating door 22 and provides a force point for the rotating door 22. The observation window 24 allows the operator to directly observe the working conditions inside the device without opening the rotating door 22. The sealing frame 25 ensures the sealing between the observation window 24 and the rotating door 22.

[0045] Working principle: When it is necessary to use this device to determine the water absorption rate of coarse aggregate in concrete, first place the coarse aggregate to be tested on the testing plate 8. Then, the telescopic rod 9, which is fixedly connected to the top of the inner side of the groove 3, starts to work. The telescopic rod 9 extends downward, driving the top cover 10, which is rotatably connected to it, to move downward until the top cover 10 covers the testing plate 8. At this time, the annular plate 11, which is slidably connected to the outer wall of the top cover 10, cooperates with the testing plate 8. At the same time, the motor 5 is started. The output end of the motor 5 rotates and drives the rotating rod 6, which is fixedly connected to it, to rotate. The turntable 7 at the top of the rotating rod 6 also rotates, so that the testing plate 8 placed on the top of the turntable 7 starts to rotate. During the testing process, the heating tube 12, which is fixedly connected to the top of the top cover 10, is started. The heating tube 12 generates heat to heat the coarse aggregate in the testing plate 8, accelerating the dehydration of the coarse aggregate. By detecting the mass change of the coarse aggregate before and after the water is discharged, the water absorption rate of the coarse aggregate can be quickly determined.

[0046] Furthermore, when placing the test disc 8, the operator needs to manually push the clamp 203 outward from the moving slot 201. During the pushing process, the clamp 203 will compress the spring 202, causing the spring 202 to be in a contracted state and accumulate elastic potential energy. After the test disc 8 is accurately placed in the appropriate position on the turntable 7, the operator releases the clamp 203. At this time, due to the elastic restoring force, the spring 202 will extend towards the test disc 8, thereby pushing the clamp 203 to move. Under the push of the spring 202, the locking block 204 will accurately lock into the corresponding locking slot 205 on the outer wall of the test disc 8. In this way, the test disc 8 is tightly clamped by the clamp 203 and firmly fixed on the turntable 7, preventing shaking or displacement during subsequent operations.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid device for determining the water absorption rate of coarse aggregate in concrete, comprising a shell (1), characterized in that: The front side of the outer casing (1) has a groove (3), and a bracket (4) is fixedly connected to the bottom of the inner side of the groove (3). A motor (5) is fixedly connected to the bottom of the bracket (4). The output end of the motor (5) passes through the bracket (4) and is fixedly connected to a rotating rod (6). A turntable (7) is fixedly connected to the top of the rotating rod (6). A detection plate (8) is provided on the top of the turntable (7). A telescopic rod (9) is fixedly connected to the top of the inner side of the groove (3). The other side of the telescopic rod (9) One end is rotatably connected to a top cover (10), and the outer wall of the top cover (10) is slidably connected to a circular ring plate (11). The top of the top cover (10) is fixedly connected to a heating tube (12), and the top of the heating tube (12) is fixedly connected to a protective cover (13). A circular ring groove (14) is opened at the bottom of the circular ring plate (11). Multiple water outlet holes (15) are equidistantly opened around the outer walls of the circular ring plate (11) and the detection plate (8). A clamping mechanism (2) is provided on the top of the turntable (7).

2. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 1, characterized in that: The clamping mechanism (2) includes multiple moving slots (201), which are equidistantly arranged around the top of the turntable (7). A spring (202) is fixedly connected to one side of each of the multiple moving slots (201), and a clamping plate (203) is fixedly connected to one end of each of the multiple springs (202). Two locking blocks (204) are fixedly connected to one side of each of the multiple clamping plates (203). Multiple locking slots (205) are equidistantly arranged on the outer wall of the detection plate (8) and the annular plate (11).

3. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 1, characterized in that: Limiting blocks (16) are fixedly connected to the left and right sides of the inner side of the annular plate (11), and limiting grooves (17) are opened on the left and right sides of the outer wall of the top cover (10).

4. The device for rapidly determining the water absorption rate of coarse aggregate in concrete according to claim 1, characterized in that: A fixing plate (18) is fixedly connected to the top rear side of the outer shell (1), and a switch (19) is fixedly connected to the top right side of the fixing plate (18). The switch (19) is electrically connected to the motor (5) and the telescopic rod (9) respectively.

5. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 4, characterized in that: The top left side of the fixed plate (18) is fixedly connected to the display (20), and the outer wall of the display (20) is fixedly connected to the protective shell (21).

6. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 1, characterized in that: A rotating door (22) is rotatably connected to the front side of the outer shell (1), and a handle (23) is fixedly connected to the right front end of the rotating door (22).

7. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 6, characterized in that: An observation window (24) is provided on the front side of the rotating door (22), and a sealing frame (25) is fixedly connected to the outer wall of the front side of the observation window (24).

8. The rapid water absorption rate determination device for coarse aggregate in concrete according to claim 2, characterized in that: The outer wall of the turntable (7) is provided with multiple sliding grooves (26) at equal intervals. The bottom sides of the multiple clamping plates (203) are fixedly connected with sliders (27), and the multiple sliders (27) are respectively slidably connected to the interior of the corresponding sliding grooves (26).

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