A closed fully automatic aggregate sampling device

Abstract

The present invention relates to the technical field of aggregate sorting, and mainly discloses a closed fully automatic aggregate sorting device, comprising a sealed box, a two-dividing funnel grid, a first silo, a second silo and a third silo, wherein the first silo is arranged above the two-dividing funnel grid, the third silo is arranged below the two-dividing funnel grid, and the second silo can be moved to the top of the first silo along a C-shaped track driving mechanism; the first silo has a weighing function, and the first silo, the second silo and the third silo can be controlled to flip through a gear rotation driving mechanism, the bottom of the third silo and the second silo in the bottom state are provided with a sample discharge silo, and a waste discharge silo is provided on the side of the third silo. The present invention automatically sorts samples to the test requirements according to the aggregate particle size and the test requirements, liberates manpower, meets the detection requirements, and solves the disadvantages of manual sorting and non-dust sealing in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of aggregate sampling, in particular to a closed full-automatic aggregate sampling device. Background Art

[0002] Aggregates are important raw materials in cement concrete and asphalt concrete, serving as the framework and filler within the mixture. Aggregates include crushed stone, gravel, machine-made sand, stone chips, and sand. In asphalt mixtures, coarse aggregate refers to crushed stone, crushed gravel, screened gravel, and slag with a particle size greater than 2.36 mm. In cement concrete, granular materials, and inorganic binder-stabilized materials, coarse aggregate refers to crushed stone, gravel, and crushed gravel with a particle size greater than 4.75 mm. Many key parameters in testing coarse and fine aggregates require uniform sampling, ensuring representative test data.

[0003] In the "Test Procedures for Aggregates in Highway Engineering" JTG 3432-2024, tests such as T 0302-2024 Coarse Aggregate Screening Test, T0310-2005 Coarse Aggregate Mud and Mud Block Content Test, T 0311-2005 Coarse Aggregate Needle and Flake Particle Content Test (Gage Method) and T0312-2005 Coarse Aggregate Needle and Flake Particle Content Test (Vernier Caliper Method) all require sample reduction and sampling.

[0004] In existing processes, sample reduction often uses the quartering method. The specific process for this method is as follows: First, pile the first shovelful of sample into a cone on a platform. Then, take a second shovelful of sample and place it on top of the cone, allowing the sample particles to roll down and evenly distribute along the cone. All samples are then stacked layer by layer in this manner to form a large cone. Then, use a shovel to flip the cone over and stack it again layer by layer in the same manner to form a large cone. After the final stacking, shovels are repeatedly inserted vertically into the top of the cone to flatten the aggregate around the edges, forming a circular pancake with a diameter-to-thickness ratio of 4 to 8. The sample is then divided into four portions along two diagonal lines that intersect at right angles. Samples are taken from one diagonal line and the above process is repeated until the required number of specimens is obtained. The current standard's quartering method is time-consuming, requires a large amount of space, is subject to subjective influence by human operators, and can result in significant variability between personnel. When there are many mother samples, the operation needs to be repeated many times, which is not easy for one person to complete. In addition, the sample separation process is not closed and fine dust flies, which affects other equipment and hygiene in the laboratory.

[0005] Alternatively, the sample can be divided using a divider. The specific process for dividing the sample using a divider is as follows: pour the sample onto a clean platform (a small amount of sample can be placed on a metal tray) and stir evenly; place the sample on a metal tray (or a receiver, etc.) and spread it evenly along its entire length; tilt the metal tray (or receiver, etc.) to allow the sample to flow into the divider at a constant speed from just above the centerline of the divider. The sample should pass through each slot as evenly and as evenly as possible and fall into two receiving hoppers. Take the sample from one of the receiving hoppers and repeat the division until a sample of the required number is obtained. The divider in the prior art has an even number of slots of equal width. The divider for coarse aggregate has at least 8 slots, and the slot width is no less than 150% of the maximum aggregate particle size; the divider for fine aggregate and filler has at least 12 slots, and the slot width is 15-20 mm. Each divider is equipped with at least two receiving hoppers. Current binary sorting equipment relies solely on manual sampling. This requires repeated operations when handling large numbers of parent samples, and the entire process is not closed. For example, a 45kg portion of coarse aggregate with a nominal particle size of 9.5mm is divided for screening testing. The minimum test weight is 1.0kg. The first sample retention is 22.5kg, the second is 11.2kg, the third is 5.6kg, the fourth is 2.8kg, and the fifth is 1.4kg. Only after five sample separations can the test requirements be met. These multiple operations are time-consuming and labor-intensive, and are subject to significant human influence. This leads to significant deviations after multiple sample separations, affecting the representativeness of the test data. Summary of the Invention

[0006] The present invention aims to solve the technical problems existing in the prior art and provides a closed, fully automatic aggregate sampling device. The present invention automatically samples the aggregate to the test requirements based on the aggregate particle size and test requirements. This frees up manpower, meets testing requirements, and solves the drawbacks of the prior art of manual sampling and dust-free operation.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a closed, fully automatic aggregate sampling device, comprising a sealed box, a two-division funnel grid, a first silo, a second silo and a third silo, the two-division funnel grid being arranged in the sealed box, the first silo being arranged above the two-division funnel grid, the third silo being arranged below the two-division funnel grid, and the second silo being arranged above the first silo being able to move along a C-shaped track drive mechanism to the top of the first silo; the first silo having a weighing function, and the first silo, the second silo and the third silo being able to flip over can be controlled by a gear rotation drive mechanism, the bottom of the third silo and the second silo in the bottom state are provided with a sample discharge silo, a waste discharge silo is provided on the side of the third silo, the sample discharge silo and the waste discharge silo pass through the bottom of the sealed box, and a side door is provided on one side of the sealed box.

[0008] Through the above technical solution, when performing aggregate sampling, the evenly stirred sample aggregate is loaded into the first silo, the sample aggregate of the mass required for the test is loaded by weighing, and the sample is flattened along the length direction of the first silo, and then the number of sampling times is calculated according to the minimum mass of the sample aggregate required by the test. During the first reduction, the first silo is controlled to automatically flip, and the sample aggregate in the first silo is evenly divided into the second silo and the third silo through the two-dividing funnel grid. After the first reduction, the third silo is controlled to flip and pour the aggregate into the waste lower silo; the second silo runs to the top of the first silo through the C-type track drive mechanism, and the retained sample in the second silo is flipped and poured into the first silo, and then continues to be reduced, and the above steps are repeated until the retained sample in the second silo or the third silo is the sample mass required for the test, and then the sample aggregate in the second silo and the third silo are poured out in batches.

[0009] Furthermore, the bottoms of the first silo, the second silo and the third silo are arc-shaped, and the arc-shaped bottoms can facilitate the sliding and pouring of the aggregate.

[0010] Furthermore, the two-division funnel grid is detachably connected to the sealing box, and two-division funnel grids of different specifications can be replaced to meet the test requirements of aggregate particle sizes of different specifications in highway engineering tests.

[0011] Furthermore, the first silo includes an outer shell and an inner lining, a weight sensor is arranged between the outer shell and the inner lining, and a limit plate is arranged above the outer shell. The weight of the aggregate in the inner lining is measured by the weight sensor. When the first silo is flipped over, the limit plate restricts the inner lining from sliding out of the outer shell.

[0012] Furthermore, the interior of the two-dividing funnel grid is provided with partitions at equal intervals along its length direction to form a plurality of dividing troughs, and each dividing trough is provided with an inclined plate, which is inclined from one side above to the other side below along the height direction of the two-dividing funnel grid. The inclined directions of the inclined plates in two adjacent dividing troughs are opposite, so that the outlets at the bottom of the two adjacent dividing troughs are respectively located on both sides of the center line of the width of the two-dividing funnel grid. The sample aggregate can be evenly divided into two through the multiple dividing troughs of the two-dividing funnel grid and fall into the second material bin and the third material bin, thereby achieving the purpose of sample reduction.

[0013] Furthermore, the C-type track driving mechanism includes a C-type track, a track mounting bracket and a synchronous belt transmission mechanism, the two track mounting brackets are symmetrically arranged along the center line of the length direction of the first silo, a C-type track is arranged on the inner side of each track mounting bracket, and the two C-type tracks are also symmetrically arranged along the center line of the length direction of the first silo, the synchronous belt transmission mechanism includes synchronous pulleys arranged at the four corner ends of the track mounting bracket, a synchronous belt is arranged between the synchronous pulleys, any of the synchronous pulleys is driven by a conveying motor, and the running track of one side of the synchronous belt is consistent with the C-type track; a synchronous belt mounting seat is installed on the synchronous belt, and a support seat is provided on the C-type track. The two ends of the second silo are respectively rotatably connected to the two support seats, and a roller is provided on the support seat. The roller can run along the C-type track, and one side of the support seat is rotatably connected to the synchronous belt mounting seat.

[0014] Furthermore, the synchronous pulley located at the corner end of one side of the top of the track mounting bracket is the driving synchronous pulley, the synchronous pulley located at the corner end of one side of the bottom of the track mounting bracket is the driven synchronous pulley, and the synchronous pulleys located at the other two corner ends of the track mounting bracket are auxiliary driven pulleys. The driving synchronous pulley and the driven synchronous pulley are provided with synchronous pulley teeth, and the other two auxiliary driven pulleys are smooth.

[0015] Furthermore, the gear rotation drive mechanism includes a housing, a worm wheel and a worm, the worm wheel and the worm are arranged in the housing, the worm is engaged with the worm wheel, one end of the worm is connected to the drive motor, and any end of the first silo, the second silo and the third silo is connected to the worm wheel.

[0016] Furthermore, the gear rotation drive mechanism includes a first rotating mechanism, a second rotating mechanism and a third rotating mechanism. The housing of the second rotating mechanism is fixedly installed on a support seat on one side, one end of the second silo is connected to the worm gear of the second rotating mechanism, and the other end of the second silo is connected to the support seat on the other side through a bearing; the housing of the first rotating mechanism is installed on one side of the sealed box, one end of the first silo is connected to the worm gear of the first rotating mechanism, and the other end of the first silo is connected to the other side of the sealed box through a bearing; the housing of the third rotating mechanism is installed on one side of the sealed box, one end of the third silo is connected to the worm gear of the third rotating mechanism, and the other end of the third silo is connected to the other side of the sealed box through a bearing.

[0017] Furthermore, the conveying motor is installed on the sealing box through a motor bracket, and the motor shaft of the conveying motor is connected to the shaft of the active synchronous pulley through a coupling.

[0018] Furthermore, a tensioning adjustment mechanism is provided between the synchronous pulley and the track mounting bracket, and support plates are provided at the four corner ends of the track mounting bracket. A long hole is provided on the support plate, and the synchronous pulley is installed in the long hole through an adjusting seat. A fixed seat is provided at one end of the support plate along the length direction of the long hole, and a notch is provided at one end of the adjusting seat. After the adjusting screw passes through the fixed seat, the other end of the adjusting screw is rotatably connected to the notch. By rotating the adjusting screw, the position of the adjusting seat can be adjusted, thereby adjusting the tension of each synchronous pulley.

[0019] Furthermore, rubber sealing curtains are provided around the bottom of the two-dividing funnel trough and the upper parts of the second and third silos to prevent the aggregate from being lost during the shrinking process.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention automatically samples to the sample mass required by the test according to the aggregate particle size and test requirements. First, through the automatic rotation of the first hopper, the sample aggregate is automatically and slowly evenly flowed from the center line of the two-dividing funnel grid to the second hopper and the third hopper below, ensuring that the sample aggregate flows into each dividing slot in equal and even amounts; secondly, the C-type track drive mechanism automatically controls the second hopper to move to the top of the first hopper, and automatically and slowly and evenly lays the secondary sample aggregate that needs to be reduced in the first hopper, providing a basis for the next uniform reduction. At the same time, the third hopper discharges the waste material, the second hopper returns to its place, and then repeats the reduction steps until the required sample aggregate mass is reached; the C-type track drive mechanism and the gear rotation drive mechanism liberate manpower, and multiple automatic reductions can avoid the large sampling deviation caused by human factors such as manual pouring speed and inclination compared to manual pouring, which affects the representativeness of the test data. The fully automatic aggregate sampling of the present invention meets the detection requirements and can also avoid the disadvantage of dust not being sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the overall structure of the sample separation device of the present invention;

[0024] Figure 2 It is a side view of the sample separation device of the present invention;

[0025] Figure 3This is a schematic structural diagram of the C-type track drive mechanism of the present invention;

[0026] Figure 4 This is a side view of the C-type track drive mechanism of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the gear rotation drive mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the binary funnel trough structure of the present invention;

[0029] Figure 7 A three-dimensional diagram of the sample separation device of the present invention;

[0030] Figure 8 This is a schematic diagram of the first silo structure of the present invention.

[0031] Figure: 1. Sealing box; 2. Binary funnel; 3. First hopper; 4. Second hopper; 5. Third hopper; 6. Sample discharge hopper; 7. Waste discharge hopper; 8. C-shaped track; 9. Synchronous belt conveyor mechanism; 10. Second rotating mechanism; 11. Third rotating mechanism; 12. First rotating mechanism; 13. Side door; 14. Track mounting bracket; 15. Motor bracket; 16. Conveyor motor; 17. Coupling; 18. Support base. 19. Roller; 20. Driving synchronous pulley; 21. Driven synchronous pulley; 22. Auxiliary driven pulley; 23. Tensioning adjustment mechanism; 24. Synchronous belt mounting seat; 25. Worm gear; 26. Box body; 27. Worm; 28. Partition; 29. ​​Inclined plate; 30. Support plate; 31. Adjustment seat; 32. Notch; 33. Fixed seat; 34. Adjustment screw; 35. Outer shell; 36. Lining; 37. Weight sensor; 38. Limit plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1 As shown, a closed fully automatic aggregate sampling device includes a sealed box 1, a two-dividing funnel grid 2, a first silo 3, a second silo 4 and a third silo 5.

[0034] The sealed box 1 is an L-shaped box 26 with legs at the bottom. The two-dividing funnel trough 2 is disposed within the sealed box 1. The first hopper 3 is disposed above the two-dividing funnel trough 2. The third hopper 5 is disposed below the two-dividing funnel trough. The second hopper 4 can be driven along a C-shaped track 8 to the top of the first hopper 3. Furthermore, the tops of the first hopper 3, the second hopper 4, and the third hopper 5 are square, and the bottoms of the first hopper 3, the second hopper 4, and the third hopper 5 are curved, which facilitates the sliding and pouring of the aggregate.

[0035] like Figure 6 As shown, the middle portion of the bifurnace 2 is a square box 26 extending vertically through the bifurnace 2. The upper portion of the bifurnace 2 is funnel-shaped. To expand the receiving area and prevent the aggregate from flowing outward and being lost, the lower portion of the bifurnace 2 is widened to a width equal to the width of the second silo 4 combined with the third silo 5. Within the square box 26 of the bifurnace 2, partitions 28 are evenly spaced along its length to form multiple feed troughs. Each feed trough is provided with an inclined plate 29, which is inclined from one side upward to the other side downward along the height of the bifurnace 2. The inclined plates 29 in adjacent feed troughs are inclined in opposite directions, so that the outlets at the bottom of the two adjacent feed troughs are located on either side of the midline of the width of the bifurnace 2. The sample aggregate is evenly divided into two by the multiple feed troughs of the bifurnace 2, and then falls into the second silo 4 and the third silo 5, thereby achieving the purpose of sample reduction.

[0036] The first silo 3 has a weighing function, and the specific solution for implementing the weighing function of the first silo 3 is as follows: Figure 8 As shown, the first silo 3 includes an outer shell 35 and an inner lining 36, a weight sensor 37 is arranged between the outer shell 35 and the inner lining 36, and a limit plate 38 is arranged above the outer shell 35. The weight of the aggregate in the inner lining 36 is measured by the weight sensor 37. When the first silo 3 is turned over, the inner lining 36 is restricted by the limit plate 38 so as not to slide out of the outer shell 35.

[0037] The first hopper 3, the second hopper 4 and the third hopper 5 can be turned over by the gear rotation drive mechanism. The bottom of the third hopper 5 and the second hopper 4 at the bottom is provided with a sample discharge hopper 6. The side of the third hopper 5 is provided with a waste discharge hopper 7. The sample discharge hopper 6 and the waste discharge hopper 7 pass through the bottom of the sealed box 1. The bottom of the sample discharge hopper 6 and the waste discharge hopper 7 is provided with a basin or a woven bag. Figure 7 As shown, a side door 13 is provided on one side of the sealed box 1 .

[0038] A further solution of the present invention is that the two-division funnel grid 2 is detachably connected to the sealing box 1, and a structure that can be used for detachable connection is that the side of the two-division funnel grid 2 is connected to the inner side of the sealing box 1 using a slide and a slider. When it needs to be replaced, the two-division funnel grid 2 is extracted from the front door, and the two-division funnel grid 2 of different specifications can be replaced to meet the test requirements of different specifications of aggregate particle size in highway engineering tests. The two-division funnel grid 2 meets the requirements of the standard "Highway Engineering Aggregate Test Procedure" and can be divided into two specifications. Coarse aggregate adopts the two-division funnel grid 2 to be provided with 12 feed slots, and the feed slot width is 48mm (the maximum divisible aggregate particle size is 31.5mm). The two-division funnel grid 2 can be replaced according to the needs of fine aggregate and is provided with 24 feed slots, and the feed slot width is 24mm.

[0039] A further embodiment of the present invention is as follows: Figure 1-4 As shown, the C-type track 8 driving mechanism includes a C-type track 8, a track mounting bracket 14 and a synchronous belt transmission mechanism 9, the two track mounting brackets 14 are symmetrically arranged along the center line of the length direction of the first silo 3, each track mounting bracket 14 is provided with a C-type track 8 inside, and the two C-type tracks 8 are also symmetrically arranged along the center line of the length direction of the first silo 3, the synchronous belt transmission mechanism 9 includes synchronous pulleys arranged at the four corner ends of the track mounting bracket 14, a synchronous belt is arranged between the synchronous pulleys, and any of the synchronous pulleys is driven by a conveying motor 16 Drive, the running track of one side of the synchronous belt is consistent with the C-shaped track 8; a synchronous belt mounting seat 24 is installed on the synchronous belt, and a support seat 18 is provided on the C-shaped track 8. The two ends of the second silo 4 are respectively rotatably connected with the two support seats 18, and the support seats 18 are provided with rollers 19. The rollers 19 can run along the grooves on the outside of the C-shaped track 8. Specifically, four rollers 19 are provided on a specific support seat 18, and two rollers 19 are respectively located on both sides of the C-shaped track 8. One side of the support seat 18 is rotatably connected with the synchronous belt mounting seat 24.

[0040] like Figure 3 As shown, the synchronous pulley located at one corner end of the top of the track mounting bracket 14 is the driving synchronous pulley 20, the synchronous pulley located at one corner end of the bottom of the track mounting bracket 14 is the driven synchronous pulley 21, and the synchronous pulleys located at the other two corner ends of the track mounting bracket 14 are auxiliary driven pulleys 22. The driving synchronous pulley 20 and the driven synchronous pulley 21 are provided with synchronous pulley teeth, and the other two auxiliary driven pulleys 22 are smooth.

[0041] like Figure 5As shown, the gear rotation drive mechanism includes a box body 26, a worm wheel 25 and a worm 27. The worm wheel 25 and the worm 27 are arranged in the box body 26. The worm 27 is engaged with the worm wheel 25. One end of the worm 27 is connected to the drive motor, and any end of the first silo 3, the second silo 4 and the third silo 5 is connected to the worm wheel 25.

[0042] Furthermore, the gear rotation drive mechanism includes a first rotating mechanism 12, a second rotating mechanism 10 and a third rotating mechanism 11. The housing 26 of the second rotating mechanism 10 is fixedly installed on the support seat 18 on one side, one end of the second silo 4 is connected to the worm gear 25 of the second rotating mechanism 10, and the other end of the second silo 4 is connected to the support seat 18 on the other side through a bearing; the housing 26 of the first rotating mechanism 12 is installed on one side of the sealed box 1, one end of the first silo 3 is connected to the worm gear 25 of the first rotating mechanism 12, and the other end of the first silo 3 is connected to the other side of the sealed box 1 through a bearing; the housing 26 of the third rotating mechanism 11 is installed on one side of the sealed box 1, one end of the third silo 5 is connected to the worm gear 25 of the third rotating mechanism 11, and the other end of the third silo 5 is connected to the other side of the sealed box 1 through a bearing.

[0043] like Figure 2 As shown, the conveying motor 16 is installed on the sealing box 1 through the motor bracket 15, and the motor shaft of the conveying motor 16 is connected to the shaft of the active synchronous pulley 20 through the coupling 17.

[0044] like Figure 4 As shown, a tensioning adjustment mechanism 23 is provided between the synchronous pulley and the track mounting bracket 14, and a support plate 30 is provided at the four corner ends of the track mounting bracket 14. The support plate 30 is provided with a long hole, and the synchronous pulley is installed in the long hole through an adjusting seat 31. A fixing seat 33 is provided at one end of the support plate 30 along the length direction of the long hole, and a notch 32 is provided at one end of the adjusting seat 31. After the adjusting screw 34 passes through the fixing seat 33, the other end of the adjusting screw 34 is rotatably connected to the notch 32. Rotating the adjusting screw 34 can adjust the position of the adjusting seat 31 so as to adjust the tension of each synchronous pulley.

[0045] Then, the conveying motor 16 controls the second silo 4 to run along the C-shaped track 8 to just above the first silo 3 .

[0046] Through the above technical solution, when performing aggregate sampling, the front door is opened, the evenly stirred sample aggregate is loaded into the first silo 3, the sample aggregate of the mass required for the test is loaded by weighing, and the sample is flattened along the length direction of the first silo 3, the front door is closed, and then the number of samplings is calculated according to the minimum mass of the sample aggregate required by the test. The driving motors of the conveying motor 16 and the worm 27 are both stepper motors, and the movement process of the stepper motor is controlled by the controller. This part of the circuit is a conventional technical means and will not be described in this patent. The position of the third hopper 5 in the present invention is fixed. During the initial shrinkage, the second hopper 4 is adjacent to the third hopper 5. The center line of the width direction of the two-dividing funnel slot 2 is placed on the center line of the second hopper 4 and the third hopper 5. The sample aggregate in the first hopper 3 is evenly divided into the second hopper 4 and the third hopper 5 through the two-dividing funnel slot 2. The stepper motor drives the worm 27 to rotate, so that the first hopper 3 is flipped at a certain angle. The angle ensures that all the aggregates can flow out. After the first shrinkage, the third hopper 5 is controlled to flip and pour the aggregates into the waste lower hopper 7; the second hopper 4 is driven by the C-type track 8 to move to the top of the first hopper 3, and the retained samples of the second hopper 4 are flipped and poured into the first In the silo 3, the sample is then divided continuously and the above steps are repeated until the sample in the second silo 4 or the third silo 5 is of the sample mass required for the test, and then the sample aggregates in the second silo 4 and the third silo 5 are poured out in batches. The solution for pouring the second silo 4 or the third silo 5 into the sample lower silo 6 is that, when the two-dividing funnel grid 2 divides the sample, the second silo 4 and the third silo 5 are close to each other, then the second silo 4 or the third silo 5 will interfere with each other when poured into the sample lower silo 6. At this time, the second silo 4 can be controlled by the conveying motor 16 to move to the left to avoid the interference space, and then the sample aggregates of the second silo 4 or the third silo 5 are successively poured into the sample lower silo 6 for collection.

[0047] The present invention automatically samples to the sample mass required by the test according to the aggregate particle size and test requirements. First, through the automatic rotation of the first hopper 3, the sample aggregate is automatically and slowly evenly flowed from the center line of the two-dividing funnel grid 2 to the second hopper 4 and the third hopper 5 below, ensuring that the sample aggregate flows into each dividing slot in equal and uniform amounts; secondly, the C-type track drive mechanism automatically controls the second hopper 4 to move to the top of the first hopper 3, and automatically and slowly and evenly lays the secondary sample aggregate that needs to be reduced in the first hopper 3, providing a basis for the next uniform reduction. At the same time, the third hopper 5 discharges the waste material, the second hopper 4 returns to its place, and then repeats the reduction step until the required sample aggregate mass is reached; the C-type track 8 drive mechanism and the gear rotation drive mechanism liberate manpower, and multiple automatic reductions can avoid the large sampling deviation caused by human factors such as manual pouring speed and inclination compared to manual pouring, which affects the representativeness of the test data. The fully automatic aggregate sampling of the present invention meets the detection requirements and can also avoid the disadvantage of dust not being sealed.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A closed fully automatic aggregate sampling device, characterized by: The invention comprises a sealed box (1), a two-part funnel grid (2), a first silo (3), a second silo (4) and a third silo (5), wherein the two-part funnel grid (2) is arranged in the sealed box (1), the first silo (3) is arranged above the two-part funnel grid (2), the third silo (5) is arranged below the two-part funnel grid (2), and the second silo (4) can be moved along a C-shaped track drive mechanism to the top of the first silo (3); the first silo (3) has a weighing function, and the first silo (3), the second silo (4) and the third silo (5) can be controlled to flip over by a gear rotation drive mechanism, and a sample lowering silo is arranged at the bottom of the third silo (5) and the second silo (4) at the bottom. (6), a waste discharge bin (7) is provided on the side of the third silo (5), the sample discharge bin (6) and the waste discharge bin (7) pass through the bottom of the sealed box (1), and a side door (13) is provided on one side of the sealed box (1); the C-type track driving mechanism includes a C-type track (8), a track mounting bracket (14) and a synchronous belt transmission mechanism (9), the two track mounting brackets (14) are symmetrically arranged along the center line of the length direction of the first silo (3), each track mounting bracket (14) is provided with a C-type track (8) on the inner side, and the two C-type tracks (8) are also symmetrically arranged along the center line of the length direction of the first silo (3), and the synchronous belt transmission mechanism (9) includes a track mounting bracket. (14) Synchronous pulleys at four corner ends, a synchronous belt is provided between the synchronous pulleys, any of the synchronous pulleys is driven by a conveying motor (16), and the running track of one side of the synchronous belt is consistent with the C-type track (8); a synchronous belt mounting seat (24) is installed on the synchronous belt, and a support seat (18) is provided on the C-type track (8), and the two ends of the second silo (4) are respectively connected to the two support seats (18) for rotation, and a roller (19) is provided on the support seat (18), and the roller (19) can run along the C-type track (8), and one side of the support seat (18) is connected to the synchronous belt mounting seat (24) for rotation; the gear rotation drive mechanism includes a box (26), a worm wheel (25) and a worm ( 27), the worm wheel (25) and the worm (27) are arranged in the box body (26), the worm (27) is meshed with the worm wheel (25), one end of the worm (27) is connected to the driving motor, and any end of the first silo (3), the second silo (4) and the third silo (5) is connected to the worm wheel (25); the gear rotation drive mechanism includes a first rotating mechanism (12), a second rotating mechanism (10) and a third rotating mechanism (11), the box body (26) of the second rotating mechanism (10) is fixedly installed on the support seat (18) on one side, one end of the second silo (4) is connected to the worm wheel (25) of the second rotating mechanism (10), and the other end of the second silo (4) is connected to the support seat (18) on the other side through a bearing;The housing (26) of the first rotating mechanism (12) is mounted on one side of the sealed box (1), one end of the first silo (3) is connected to the worm gear (25) of the first rotating mechanism (12), and the other end of the first silo (3) is connected to the other side of the sealed box (1) via a bearing; the housing (26) of the third rotating mechanism (11) is mounted on one side of the sealed box (1), one end of the third silo (5) is connected to the worm gear (25) of the third rotating mechanism (11), and the other end of the third silo (5) is connected to the other side of the sealed box (1) via a bearing.

2. A closed fully automatic aggregate sampling device according to claim 1, characterized in that: The bottoms of the first silo (3), the second silo (4) and the third silo (5) are arc-shaped, and the arc-shaped bottoms facilitate the sliding and pouring out of the aggregate.

3. A closed fully automatic aggregate sampling device according to claim 2, characterized in that: The two-dividing funnel trough (2) is detachably connected to the sealing box (1).

4. A closed fully automatic aggregate sampling device according to claim 3, characterized in that: The first silo (3) comprises an outer shell (35) and an inner lining (36), a weight sensor (37) is provided between the outer shell (35) and the inner lining (36), and a limit plate (38) is provided above the outer shell (35).

5. A closed fully automatic aggregate sampling device according to any one of claims 1 to 4, characterized in that: The interior of the two-dividing funnel trough (2) is provided with partitions (28) at equal intervals along its length direction to form a plurality of material distribution troughs, and each material distribution trough is provided with an inclined plate (29). The inclined plate (29) is inclined from one side above to the other side below along the height direction of the two-dividing funnel trough (2), and the inclined directions of the inclined plates (29) in two adjacent material distribution troughs are opposite.

6. The closed fully automatic aggregate sampling device according to claim 1, characterized in that: The synchronous pulley located at the corner end of one side of the top of the track mounting bracket (14) is the active synchronous pulley (20), the synchronous pulley located at the corner end of one side of the bottom of the track mounting bracket (14) is the driven synchronous pulley (21), and the synchronous pulleys located at the other two corner ends of the track mounting bracket (14) are auxiliary driven pulleys (22). The conveying motor (16) is mounted on the sealing box (1) through the motor bracket (15), and the motor shaft of the conveying motor (16) is connected to the shaft of the active synchronous pulley (20) through the coupling (17).

7. A closed fully automatic aggregate sampling device according to claim 6, characterized in that: A tensioning adjustment mechanism (23) is provided between the synchronous pulley and the track mounting bracket (14), and a support plate (30) is provided at the four corner ends of the track mounting bracket (14). The support plate (30) is provided with a long hole, and the synchronous pulley is installed in the long hole through an adjustment seat (31). A fixing seat (33) is provided at one end of the support plate (30) along the length direction of the long hole, and a notch (32) is provided at one end of the adjustment seat (31). After the adjusting screw (34) passes through the fixing seat (33), the other end of the adjusting screw (34) is rotatably connected to the notch (32).

8. The closed fully automatic aggregate sampling device according to claim 4, characterized in that: The bottom of the two-dividing funnel trough (2) and the four sides above the second silo (4) and the third silo (5) are provided with rubber sealing curtains.

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