A fully automatic aggregate soundness tester

Abstract

This utility model relates to the field of aggregate soundness testing technology, and discloses a fully automatic aggregate soundness testing instrument, including a testing instrument with an automatic drying chamber and a soaking tank inside. Two moving components are located on the top of the testing instrument, and a draining basket is also located on the top. A stirring assembly is located inside the draining basket, and the stirring assembly includes a stirring frame. The outer wall of the stirring frame is rotatably connected to the inside of the draining basket, and a ring-shaped array of stirring rods is fixedly connected to the outer wall of the stirring frame. In this utility model, the motor drives a pair of transmission belts and the stirring frame, in conjunction with a brush plate and stirring rods, to clean the gaps in the draining frame and stir the aggregate. This breaks air bubbles, helps the aggregate to soak fully, accelerates draining, and improves testing efficiency. It solves the problems of cumbersome manual operation, air bubbles affecting the test, and slow draining, thus improving testing accuracy and equipment automation.

Description

Technical Field

[0001] This utility model relates to the field of aggregate soundness testing technology, and in particular to a fully automatic aggregate soundness testing instrument. Background Technology

[0002] In the field of construction engineering, the durability of concrete is one of the key indicators for measuring project quality. As a major component of concrete, the strength of aggregates directly affects the overall performance of the concrete. Aggregate strength testing, by simulating the effects of sulfate attack and freeze-thaw cycles on aggregates in natural environments, assesses the aggregates' resistance to damage during long-term use, and is a crucial testing step to ensure the safety and stability of concrete structures. With the continuous improvement of engineering quality requirements in the construction industry, the accuracy, efficiency, and automation of aggregate strength testing have become a focus of industry attention. Traditional manual operation methods are no longer sufficient to meet the needs of large-scale, high-precision testing. Therefore, developing a fully automated aggregate strength testing instrument has become an inevitable trend to improve testing standards and drive technological progress in the industry. This fully automated testing instrument can automatically complete the cyclical operations of aggregate soaking, draining, drying, and cooling according to standard testing procedures, reducing manual intervention, ensuring consistency of test conditions, and providing reliable test data for engineering practice. In existing technologies, aggregate strength testing mainly relies on a combination of manual operation and semi-automated equipment. During the test, workers immerse containers of aggregate in a pool filled with sodium sulfate solution for a specified time. After this time, the containers are manually removed and transferred to a draining area. Once drained, they are placed in a drying device for further drying. After drying, the containers are transferred back to the solution pool for the next cycle, and this process is repeated multiple times. While some semi-automated equipment can time the soaking or drying stages, manual transfer of containers between different stages and auxiliary operations during the draining process are still required. The underlying technology is primarily based on a mechanical support structure and a simple timer control device. By setting soaking and drying time parameters, a reminder is issued when the preset time is reached, requiring manual execution of the next step. The equipment itself lacks the ability to automatically transfer containers or handle special situations during the draining process. However, existing technologies have many problems in practical applications. A prominent issue is the generation of numerous air bubbles between aggregate particles during soaking and draining. These bubbles hinder sufficient contact between the aggregate and the sodium sulfate solution, leading to uneven erosion and affecting the accuracy of test results. Simultaneously, the presence of air bubbles makes it difficult for water to drip quickly during draining, prolonging the draining time and reducing test efficiency. Due to the lack of an effective automated processing mechanism, operators must frequently observe and manually handle air bubbles during the test, increasing labor intensity and introducing human error due to variations in timing. This makes it impossible to guarantee consistent test conditions, severely impacting the reliability and stability of aggregate strength testing and significantly affecting the quality and market competitiveness of fleece fabrics. Therefore, a fully automated aggregate strength testing instrument is proposed to address these problems. Utility Model Content

[0003] The purpose of this application is to improve drainage efficiency and address the problems of cumbersome manual operation, air bubbles affecting the test, and slow drainage in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An automatic aggregate soundness tester includes a tester, an automatic drying chamber inside the tester, an immersion tank inside the tester, two moving components on the top of the tester, a drain basket on the top of the tester, and a stirring component inside the drain basket. The mixing assembly includes a mixing frame, the outer wall of which is rotatably connected to the inside of the drain basket. A ring-shaped array of mixing rods is fixedly connected to the outer wall of the mixing frame. A ring-shaped array of brush plates is fixedly connected to the outer wall of the mixing frame. An anti-corrosion support frame is fixedly connected to the outer wall of the drain basket. A motor is fixedly connected to the outer wall of the anti-corrosion support frame. A transmission belt is installed inside the anti-corrosion support frame. The anti-corrosion support frame is fixedly connected to the output end of the motor. One side of the bottom of the anti-corrosion support frame is connected to one end of the mixing frame.

[0005] Preferably, both of the moving components include a lead screw and a transmission block. Both ends of the lead screw are rotatably connected to the outer wall of the detector. The transmission block is internally threaded to the outer wall of the lead screw. The top of one of the transmission blocks is fixedly connected to another moving component. The outer wall of the other moving component is fixedly connected to a lifting plate. The bottom of the lifting plate is provided with a clamping component.

[0006] The above technical solution achieves the effect of moving the drain blue.

[0007] Preferably, the clamping assembly includes a clamp, the outer wall of which is disposed at the bottom of the lifting plate, and the clamp is in contact with the outer wall of the drain basket.

[0008] The above technical solution achieves the effect of clamping the drain basket.

[0009] Preferably, a fixed disc is fixedly connected to the bottom of the lifting plate, and a limit groove is formed inside the fixed disc.

[0010] The above technical solution achieves the effect of limiting the slider.

[0011] Preferably, a second motor is fixedly connected to the top of the fixed disk, the output end of the second motor passes through the fixed disk and is fixedly connected to a turntable, and the outer wall of the turntable is rotatably connected inside the fixed disk.

[0012] The above technical solution achieves the effect of driving the turntable.

[0013] Preferably, the turntable has a limiting groove inside, and the fixed disc has a sliding column inside.

[0014] The above technical solution achieves the effect of moving the sliding column.

[0015] Preferably, the outer wall of the sliding column is slidably connected inside the limiting groove, and a limiting disk is fixedly connected to the top of the sliding column.

[0016] The above technical solution achieves the effect of adjusting the turntable.

[0017] Preferably, a slider is fixedly connected to the bottom of the sliding column, the outer wall of the slider is slidably connected inside the limiting groove, a connecting rod is fixedly connected to the bottom of the slider, and the outer wall of the connecting rod is fixedly connected to the outer wall of the clamp.

[0018] The above technical solution achieves the effect of linear motion of the fixture.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the mixing rack achieves its rotation function by starting the motor. When the motor is started, the motor drives the transmission belt and the mixing rack, and works in conjunction with the brush plate and the mixing rod to clean the gaps of the drain rack and mix the aggregate. It can break the air bubbles to help the aggregate soak fully, accelerate the draining, improve the test efficiency, and solve the problems of cumbersome manual operation, air bubbles affecting the test and slow draining. It also improves the test accuracy and the automation of the equipment.

[0020] 2. In this utility model, the fixture achieves its movement function by starting motor two. When motor two is started, the motor two drives the turntable and sliding column, and in conjunction with the slider, moves the connecting rod, which can automatically complete the transfer of the drain basket between the solution tank and the drying box without manual operation. This solves the problems of time-consuming manual transfer, inconvenience of nighttime operation, and easy errors, and improves the degree of automation and accuracy of the experiment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a fully automatic aggregate strength testing instrument proposed in this utility model; Figure 2 This is a schematic diagram of the drain basket structure of a fully automatic aggregate strength tester proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the corrosion-resistant support frame of a fully automatic aggregate strength tester proposed in this utility model. Figure 4 This is a schematic diagram of the fixture structure of a fully automatic aggregate strength testing instrument proposed in this utility model; Figure 5 This is a schematic diagram of the internal structure of the fixed disc of a fully automatic aggregate strength tester proposed in this utility model; Explanation of reference numerals in the attached figures: 1. Detector; 2. Automatic drying oven; 3. Lead screw; 4. Transmission block; 5. Lifting plate; 6. Drain basket; 7. Soaking tank; 8. Brush plate; 9. Anti-corrosion support frame; 10. Stirring rack; 11. Stirring rod; 12. Transmission belt; 13. Motor 1; 14. Motor 2; 15. Limiting groove; 16. Sliding block; 17. Connecting rod; 18. Fixture; 19. Turntable; 20. Limiting groove; 21. Limiting disc; 22. Sliding column; 23. Fixed disc. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0023] Reference Figures 1-3An automated aggregate strength tester includes a tester 1, which serves as the main frame of the equipment. Made of welded stainless steel, the tester 1 possesses excellent corrosion resistance and structural strength, providing a stable mounting foundation for all components and resisting corrosion from sodium sulfate solution, thus extending the equipment's service life. The tester 1 houses an automatic drying chamber 2, whose inner wall is lined with high-temperature resistant ceramic fiberboard. Combined with infrared heating tubes installed at the top and a circulating fan at the bottom, precise temperature control within the 0-200℃ range is achieved, ensuring uniform heating of the aggregate during the drying process. To meet the stringent requirements of the drying temperature and time in the test, the detector 1 is equipped with an immersion tank 7. The immersion tank 7 is made of polytetrafluoroethylene, which has excellent chemical corrosion resistance and can withstand long-term immersion in sodium sulfate solution without damage. In addition, the inner wall of the tank is smooth, which facilitates subsequent cleaning and avoids the interference of solution residue on the test results. The top of the detector 1 is equipped with two moving components, which correspond to the positions of the automatic drying box 2 and the immersion tank 7, respectively, and are used to realize the precise transfer of the drain basket 6 between the two stations. The top of the detector 1 is equipped with a drain basket 6, and the drain basket 6 is equipped with a stirring component inside. The mixing assembly includes a mixing frame 10, with both ends of the mixing frame 10 rotatably connected to the two sides inside the drain basket 6 via deep groove ball bearings, ensuring that the mixing frame 10 can rotate flexibly without jamming. The outer wall of the mixing frame 10 is rotatably connected to the inside of the drain basket 6, and a ring array of mixing rods 11 is fixedly connected to the outer wall of the mixing frame 10. The mixing rods 11 are made of stainless steel. When the mixing rods 11 rotate, they can fully disperse the aggregate in the drain basket 6, preventing the aggregate from piling up and forming dead corners, thereby ensuring that all aggregates are evenly contacted with the sodium sulfate solution. At the same time, during the draining process, the dispersing action can also accelerate the dripping of water from the surface of the aggregate, improving the draining efficiency. A ring array of brush plates 8 is fixedly connected to the outer wall of the mixing frame 10. The brush plates 8 are composed of a rigid plastic substrate and nylon brushes, which can effectively clean the gaps between the mesh surfaces of the drain basket 6 without causing wear to the mesh surface. The brush plates 8 and the mixing rods 11 are alternately distributed. When the mixing frame 10 rotates, the brushes... Plate 8 can remove impurities and air bubbles attached to the mesh, preventing air bubbles from hindering water drainage and ensuring a smooth drainage process. The outer wall of the drain basket 6 is fixedly connected to an anti-corrosion support frame 9, which is made of fiberglass reinforced plastic (FRP). This material is lightweight, high-strength, and corrosion-resistant, providing stable support for the motor 13 and the transmission belt 12 while preventing corrosion from the solution. The outer wall of the anti-corrosion support frame 9 is fixedly connected to the motor 13, and the transmission belt 12 is installed inside the anti-corrosion support frame 9. The transmission belt 12 is a polyurethane synchronous belt, which has the characteristics of high transmission accuracy, wear resistance, and no need for lubrication. Its inner toothed structure meshes with the driving wheel at the output end of the motor 13 and the driven wheel at one end of the stirring frame 10, which can stably transmit the power of the motor 13 to the stirring frame 10. The anti-corrosion support frame 9 is fixedly connected to the output end of the motor 13, and one side of the bottom of the anti-corrosion support frame 9 is connected to one end of the stirring frame 10.

[0024] Reference Figure 1Both moving components include a lead screw 3 and a transmission block 4. Both ends of the lead screw 3 are rotatably connected to the outer wall of the detector 1. The lead screw 3 is made of steel and has undergone heat treatment, ensuring sufficient mechanical strength to support the weight of the transmission block 4 and subsequent components. A chrome plating layer enhances surface hardness and wear resistance, reducing wear during long-term use and extending service life. The thread of the lead screw 3 is a trapezoidal thread with a pitch of 5mm. This thread structure features high transmission efficiency and good self-locking performance, ensuring that the transmission block 4 remains stably in its current position when it stops moving, preventing slippage due to external forces. The internal thread of the transmission block 4 is connected to the outer wall of the lead screw 3. Another moving component is fixedly connected to the top of one transmission block 4 using a bolt connection. The two moving components are fastened together with hexagonal socket head cap screws made of stainless steel, which has good corrosion resistance, ensuring the stability and durability of the connection structure. Two moving components are vertically distributed. One is arranged along the length of the detector 1 to enable the lateral movement of the drain basket 6 between the automatic drying chamber 2 and the soaking tank 7. The other is arranged along the width of the detector 1 and works with the lifting plate 5 to achieve longitudinal fine adjustment. The two components work together to achieve two-dimensional movement, which can accurately move the drain basket 6 to any designated position to meet the position requirements of different workstations during the test. The outer wall of the other moving component is fixedly connected to the lifting plate 5, and the bottom of the lifting plate 5 is equipped with a clamping component.

[0025] Reference Figure 1 , Figure 4 and Figure 5The clamping assembly includes a clamp 18, which is made of steel through forging and precision machining. Its clamping surface is inlaid with a nitrile rubber pad, the surface of which has a diamond-shaped anti-slip texture. The rubber pad increases friction with the outer wall of the drain basket 6, preventing slippage during clamping. Simultaneously, the rubber material has a certain elasticity, which can buffer the clamping force and prevent the clamp 18 from causing rigid damage to the drain basket 6, ensuring the stability of the drain basket 6 during movement. The outer wall of the clamp 18 is located at the bottom of the lifting plate 5, and the clamp 18 fits snugly against the outer wall of the drain basket 6. A fixed disc 23 is fixedly connected to the bottom of the lifting plate 5. A limit groove 15 is formed inside the fixed disc 23 to provide precise guidance for the sliding of the slider 16, ensuring that the slider 16 can only move in a straight line along the groove direction. A second motor 14 is fixedly connected to the top of the fixed disc 23, and the output end of the second motor 14 passes through the fixed disc 23. 3. A turntable 19 is fixedly connected to the fixed disc 23. The outer wall of the turntable 19 is rotatably connected to the inside of the fixed disc 23. A limiting groove 20 is provided inside the turntable 19. A sliding column 22 is provided inside the fixed disc 23. The outer wall of the sliding column 22 is slidably connected to the inside of the limiting groove 20. A limiting disc 21 is fixedly connected to the top of the sliding column 22. The limiting disc 21 is a stainless steel disc and is fixed to the sliding column 22 by welding to prevent the sliding column 22 from falling out of the limiting groove 20 and to ensure the stability of the structure. A slider 16 is fixedly connected to the bottom of the sliding column 22. The outer wall of the slider 16 is slidably connected to the inside of the limiting groove 15. A connecting rod 17 is fixedly connected to the bottom of the slider 16. The outer wall of the connecting rod 17 is fixedly connected to the outer wall of the clamp 18.

[0026] Working principle: When testing the aggregate strength, the aggregate to be tested is first neatly placed in the drain basket 6, and then the drain basket 6 is steadily placed into the soaking tank 7, so that it is completely immersed in the sodium sulfate solution to begin the soaking process. After soaking for four hours, the drain basket 6 needs to be removed from the soaking tank 7 for draining. At this point, motor 13 can be started. After motor 13 starts running, it drives the transmission belt 12 to start driving, which in turn drives the mixing frame 10 to rotate. When the mixing frame 10 rotates, it will drive the brush plates 8 and the mixing rods 11, which are arranged in a ring array on its outside, to rotate together. During the rotation, the mixing rods 11 can effectively break up the aggregate that is piled up together, so as to avoid the situation that the aggregate is not drained thoroughly or cleanly due to excessive accumulation. At the same time, the brush plates 8 will carefully clean the gaps between the mesh surfaces of the drain basket 6 during rotation, so as to prevent impurities or air bubbles from remaining in the gaps, thereby preventing air bubbles from hindering water dripping and affecting the draining efficiency, and ensuring that the draining process is carried out efficiently. After the draining is completed, the drive connected to one side of the lead screw 3 is activated to make the lead screw 3 rotate, which then drives the transmission block 4 to move along the direction of the lead screw 3. The movement of the transmission block 4 will drive the lifting plate 5 connected to it to move synchronously, thereby moving the draining basket 6 smoothly and accurately into the automatic drying box 2. Then the automatic drying box 2 begins to dry the aggregate to remove the residual moisture in the aggregate. In other scenarios where the drain basket 6 needs to be moved, motor 2 14 can be started directly. After starting, motor 2 14 drives turntable 19 to rotate. The rotation of turntable 19 causes the limiting groove 20 on it to rotate as well. The rotation of the limiting groove 20 causes the sliding column 22 located inside it to move. Simultaneously, the sliding column 22, in conjunction with the slider 16, slides linearly within the limiting groove 15, thereby driving the connecting rod 17 to move accordingly. The movement of the connecting rod 17 causes the clamp 18 to move, stably clamping the drain basket 6. This effectively prevents the drain basket 6 from shaking during movement, ensuring the stability of the drain basket 6 and the internal aggregate, and ensuring the entire movement process is safe and smooth.

Claims

1. A fully automatic aggregate soundness testing instrument, comprising a testing instrument (1), characterized in that: The detector (1) has an automatic drying box (2) inside, an soaking tank (7) inside, two moving components on the top of the detector (1), a drain basket (6) on the top of the detector (1), and a stirring component inside the drain basket (6). The mixing assembly includes a mixing frame (10), the outer wall of which is rotatably connected to the inside of the drain basket (6), the outer wall of which is fixedly connected to a ring array of mixing rods (11), the outer wall of which is fixedly connected to a ring array of brush plates (8), the outer wall of which is fixedly connected to a corrosion-resistant support frame (9), the outer wall of which is fixedly connected to a motor (13), the inner side of which is provided with a transmission belt (12), the corrosion-resistant support frame (9) and the output end of the motor (13) are fixedly connected, and one side of the bottom of the corrosion-resistant support frame (9) is connected to one end of the mixing frame (10).

2. The fully automatic aggregate soundness tester according to claim 1, characterized in that: Both of the moving components include a lead screw (3) and a transmission block (4). Both ends of the lead screw (3) are rotatably connected to the outer wall of the detector (1). The transmission block (4) is internally threaded to the outer wall of the lead screw (3). The top of one of the transmission blocks (4) is fixedly connected to another moving component. The outer wall of the other moving component is fixedly connected to a lifting plate (5). The bottom of the lifting plate (5) is provided with a clamping component.

3. The fully automatic aggregate soundness tester according to claim 2, characterized in that: The clamping assembly includes a clamp (18), the outer wall of which is disposed at the bottom of the lifting plate (5), and the clamp (18) is in contact with the outer wall of the drain basket (6).

4. The fully automatic aggregate soundness tester according to claim 3, characterized in that: The bottom of the lifting plate (5) is fixedly connected to a fixed disc (23), and a limit groove (15) is opened inside the fixed disc (23).

5. The fully automatic aggregate soundness tester according to claim 4, characterized in that: The top of the fixed disk (23) is fixedly connected to a motor (14), the output end of the motor (14) passes through the fixed disk (23) and is fixedly connected to a turntable (19), the outer wall of the turntable (19) is rotatably connected to the inside of the fixed disk (23).

6. The fully automatic aggregate soundness tester according to claim 5, characterized in that: The turntable (19) has a limiting groove (20) inside, and the fixed disc (23) has a sliding column (22) inside.

7. The fully automatic aggregate soundness tester according to claim 6, characterized in that: The outer wall of the sliding column (22) is slidably connected inside the limiting groove (20), and the top of the sliding column (22) is fixedly connected to the limiting disk (21).

8. The fully automatic aggregate soundness tester according to claim 7, characterized in that: The bottom of the sliding column (22) is fixedly connected to a slider (16), the outer wall of the slider (16) is slidably connected inside the limiting groove (15), the bottom of the slider (16) is fixedly connected to a connecting rod (17), and the outer wall of the connecting rod (17) is fixedly connected to the outer wall of the clamp (18).

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