A quality inspection system for road subbase construction

Abstract

The present invention relates to a quality inspection system for road subbase construction, belonging to the technical field of road subbase construction. By adopting an anti-charge adsorption mixing barrel, the surface charge density of the barrel wall is first reduced to inhibit the electrostatic adsorption between clay particles and the barrel wall. Then, the first mixing part precisely peels off the clay hard shell layer on the barrel wall through circular motion, and the second mixing part rotates synchronously to strongly shear and mix the bottom materials. The two are spatially staggered to form a cooperative mixing flow field, effectively eliminating the local aggregation and condensation of clay. At the same time, the control terminal dynamically adjusts the driving speed based on the dielectric constant detection data, so that the clay peeling rate matches the mixing process in real time, solving both the problems of hard shell formation and composition deviation caused by charge adsorption of the metal barrel, and improving the mixing uniformity and quality inspection accuracy through closed-loop control, ultimately ensuring the stable and efficient mixing of highly viscous materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of road subbase construction, and particularly relates to a quality inspection system for road subbase construction. Background Art

[0002] In road subbase construction, the uniform mixing of materials such as cement, gravel, and soil is a key link to ensure the project quality. Currently, the commonly used mixing device for the uniform mixing of materials such as cement, gravel, and soil is a combined structure of a metal mixing barrel and a mixing shaft. Multiple groups of blades are installed on the mixing shaft. By adjusting the rotation speed and direction of the mixing shaft, the mixing is achieved through the friction and shear actions between the blades and the materials. At the same time, the mixing parameters are monitored in real time by a quality inspection system to meet the standards.

[0003] However, when dealing with highly viscous materials such as cement-stabilized clay, the clay particles carry negative charges on their surfaces, while the inner wall of the metal mixing barrel has positive charges due to its material properties. As a result, the clay particles quickly adhere to the barrel wall during the mixing process due to the charge adsorption effect. Due to the strong physical adsorption force, the conventional mixing blades are difficult to peel off the adsorbed clay layer, resulting in the local aggregation and rapid condensation of clay on the barrel wall, forming a "hard shell" that cannot be fully mixed with the cement. This problem not only reduces the material mixing uniformity but also interferes with the accuracy of the quality inspection system - although the system can monitor the mixing parameters, it cannot effectively identify or intervene in the local composition deviation caused by adsorption, ultimately affecting the compliance of the subbase material performance. There is an urgent need for a quality inspection system for road subbase construction in the prior art to solve the hard shell problem caused by charge adsorption and achieve stable and efficient mixing of highly viscous materials. Summary of the Invention

[0004] To solve the above problems existing in the prior art, the present invention provides a quality inspection system for road subbase construction, which solves the problems put forward in the above background art.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] A quality inspection system for road subbase construction, comprising a control terminal, an anti-charge adsorption stirring barrel, and a driving unit communicatively connected to the control terminal. A first stirring part and a second stirring part are coaxially arranged in the anti-charge adsorption stirring barrel. The first stirring part and the second stirring part are linked by a transmission shaft and driven by the driving unit to rotate synchronously. The first stirring part extends radially along the anti-charge adsorption stirring barrel. The outer edge of the first stirring part is in clearance fit with the barrel wall of the anti-charge adsorption stirring barrel and peels off the clay hard shell layer adsorbed on the barrel wall through circular motion. The second stirring part shears and mixes the materials at the bottom of the anti-charge adsorption stirring barrel through rotational motion. The first stirring part and the second stirring part form a spatial intersection in the movement trajectory, forming a synergistic effect on material flow and clay peeling. The control terminal dynamically adjusts the rotation speed of the driving unit by presetting the dielectric constant detection parameters of the mixed materials and receiving the detection data in real time to match the clay peeling and mixing rates, thereby eliminating the component deviation caused by charge adsorption and improving the detection accuracy.

[0007] As a further solution of the present invention, a driving shaft part is arranged in the anti-charge adsorption stirring barrel. The first stirring part and the second stirring part are both arranged on the driving shaft part. The driving shaft part includes a hollow support block, a driving gear, two driven gears, and a driving shaft passing through the center of the driving gear. The driving shaft is located inside the hollow support block. The driving shaft is externally connected to a driving member. The hollow support block is arranged along the central axis of the anti-charge adsorption stirring barrel and is located above the anti-charge adsorption stirring barrel. The driving gear is rotatably arranged inside the hollow support block, and the center of the driving gear is located on the central axis of the anti-charge adsorption stirring barrel. The two driven gears are respectively meshed with the driving gear and symmetrically arranged on both sides of the driving gear. The included angle between the two driven gears and the driving gear is an obtuse angle. The driving gear drives the first stirring part to rotate, and the driven gears drive the second stirring part to rotate.

[0008] As a further solution of the present invention, the anti-charge adsorption stirring barrel includes a conical barrel bottom and a frustum-shaped barrel wall. The conical bottom surface of the conical barrel bottom coincides with the frustum top surface of the frustum-shaped barrel wall, and the conical barrel bottom and the frustum-shaped barrel wall are connected as a whole.

[0009] As a further solution of the present invention, the first stirring part includes two rotating connecting rods and a first flexible scraper. The two ends of the two rotating connecting rods are respectively connected to the driving shaft and the first flexible scraper. The driving shaft drives the rotating connecting rods to rotate circumferentially. The rotating connecting rods drive the first flexible scraper to cooperate with the barrel wall and peel off the clay hard shell layer adsorbed on the inner wall of the frustum-shaped barrel wall through circular motion.

[0010] As a further solution of the present invention, the width of the first flexible scraper is greater than half of the height of the frustum-shaped barrel wall and less than the height of the frustum-shaped barrel wall.

[0011] As a further solution of the present invention, the second stirring part includes two inclined rods and two stirring rods. One ends of the two inclined rods respectively penetrate through the centers of the two driven gears and move synchronously with the two driven gears. The other ends of the two inclined rods are respectively connected to the two stirring rods. The driving gear drives the two driven gears to rotate, the two driven gears respectively drive the two inclined rods to rotate, and the two inclined rods drive the two stirring rods to stir the materials in the bottom of the conical barrel.

[0012] As a further solution of the present invention, the two stirring rods are vertically arranged.

[0013] As a further solution of the present invention, the two inclined rods are respectively connected to the centers of the two stirring rods and are vertically arranged with the two stirring rods.

[0014] As a further solution of the present invention, second flexible scrapers are respectively arranged at both ends of the two stirring rods, and the two second flexible scrapers on the same stirring rod are respectively arranged on the outer sides of both ends of the stirring rod.

[0015] The beneficial effects of the present invention are as follows:

[0016] By adopting an anti-charge adsorption stirring barrel, first, the surface charge density of the barrel wall is reduced to inhibit the electrostatic adsorption effect between clay particles and the barrel wall. Then, the first stirring part is used to precisely peel off the clay hard shell layer on the barrel wall through circular motion, and the second stirring part rotates synchronously to strongly shear and mix the bottom materials. The two are spatially staggered to form a cooperative stirring flow field, effectively eliminating the local aggregation and coagulation of clay. At the same time, the control terminal dynamically adjusts the driving speed based on the dielectric constant detection data, so that the clay peeling rate matches the mixing process in real time, which not only solves the problems of hard shell formation and composition deviation caused by charge adsorption of the metal barrel, but also improves the mixing uniformity and quality detection accuracy through closed-loop regulation, and finally ensures the stable and efficient mixing of high-viscosity materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the internal structure of the anti-charge adsorption stirring barrel of the present invention;

[0020] Figure 3 is a schematic diagram of the internal structure of the hollow support block of the present invention;

[0021] Figure 4 is a partial side view of the anti-charge adsorption stirring barrel of the present invention.

[0022] MAIN SYMBOL DESCRIPTION OF COMPONENTS:

[0023] In the figure: 1, base; 2, drive shaft part; 21, hollow support block; 22, driving gear; 23, driven gear; 24, drive shaft; 3, first bracket; 4, anti-charge adsorption stirring barrel; 41, frustum-shaped barrel wall; 42, conical barrel bottom; 5, second bracket; 6, first stirring part; 61, rotating connecting rod; 62, first flexible scraper; 7, second stirring part; 71, inclined rod; 72, stirring rod; 73, second flexible scraper. Specific embodiments

[0024] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present invention as follows.

[0025] Please refer to Figure 1 - Figure 4 , this embodiment provides a quality detection system for road subbase construction, including a control terminal, an anti-charge adsorption stirring barrel 4, and a driving unit communicatively connected to the control terminal. A first stirring part 6 and a second stirring part 7 are coaxially arranged in the anti-charge adsorption stirring barrel 4. The first stirring part 6 and the second stirring part 7 are linked by a transmission shaft and driven by the driving unit to rotate synchronously. The first stirring part 6 extends radially along the anti-charge adsorption stirring barrel 4. The outer edge of the first stirring part 6 is in clearance fit with the barrel wall of the anti-charge adsorption stirring barrel 4 and peels off the clay hard shell layer adsorbed on the barrel wall through circular motion. The second stirring part 7 shears and mixes the materials at the bottom of the anti-charge adsorption stirring barrel 4 through rotational motion. The first stirring part 6 and the second stirring part 7 form a spatial intersection in the movement track, forming a synergistic effect on the material flow and clay peeling; the control terminal dynamically adjusts the rotation speed of the driving unit by presetting the dielectric constant detection parameters of the mixed materials and receiving the detection data in real time to match the clay peeling and mixing rates, thereby eliminating the composition deviation caused by charge adsorption and improving the detection accuracy.

[0026] It should be noted that, first of all, the overall quality detection system of the present application, in addition to including a control terminal, an anti-charge adsorption stirring barrel 4, and a driving unit communicatively connected to the control terminal, also includes a base 1, a first bracket 3, and a second bracket 5, as Figure 1As shown, the first support 3 and the second support 5 are respectively used to support the anti-charge adsorption stirring barrel 4 and the drive shaft part 2, and the base 1 provides support for the overall structure. Secondly, the control terminal receives the feedback of the dielectric constant detection parameters of the mixed material, including the clay adsorption thickness and the mixing uniformity, and a threshold value is preset in the control terminal according to actual needs. When it is detected that the clay adsorption thickness exceeds the preset threshold value, the pressurized scraping mode of the first stirring part 6 is triggered. The first stirring part 6 and the second stirring part 7 form a spatial intersection in the movement track, and are synchronously regulated by the control terminal to form a synergistic effect on the material flow and clay peeling, avoiding local condensation and improving the parameter accuracy of the detection system.

[0027] Based on the current construction of the road subbase, when dealing with highly viscous materials such as cement-stabilized clay, the clay particles on the surface carry negative charges, while the inner wall of the metal stirring barrel has positive charges due to the material characteristics, resulting in the rapid attachment of clay particles to the barrel wall during the stirring process due to the charge adsorption effect. Due to the strong physical adsorption force, it is difficult for conventional stirring blades to peel off the adsorbed clay layer, resulting in the local aggregation and rapid condensation of clay on the barrel wall, forming a "hard shell" that cannot be fully mixed with cement. This problem not only reduces the mixing uniformity of the material but also interferes with the accuracy of the quality detection system.

[0028] To solve this problem, in this embodiment, by using the anti-charge adsorption stirring barrel 4, first, the surface charge density of the barrel wall is reduced to inhibit the electrostatic adsorption effect between the clay particles and the barrel wall. Then, the first stirring part 6 precisely peels off the hard shell layer of the clay on the barrel wall through circular motion, and the second stirring part 7 rotates synchronously to strongly shear and mix the bottom material. The two form a synergistic stirring flow field in space, effectively eliminating the local aggregation and condensation of clay. At the same time, the control terminal dynamically adjusts the driving speed based on the dielectric constant detection data, so that the clay peeling rate matches the mixing process in real time, which not only solves the problems of hard shell formation and composition deviation caused by charge adsorption of the metal barrel but also improves the mixing uniformity and quality detection accuracy through closed-loop regulation, ultimately ensuring the stable and efficient mixing of highly viscous materials.

[0029] Furthermore, to address the issue of the efficiency of hard shell peeling and bottom material mixing, synergy is achieved through stirring in different regions. In one embodiment, a drive shaft portion 2 is provided inside the anti-charge adsorption stirring barrel 4. The first stirring portion 6 and the second stirring portion 7 are both arranged on the drive shaft portion 2. The drive shaft portion 2 includes a hollow support block 21, a driving gear 22, two driven gears 23, and a drive shaft 24 passing through the center of the driving gear 22. The drive shaft 24 is located inside the hollow support block 21, and the drive shaft 24 is externally connected to a driving member. The hollow support block 21 is arranged along the central axis of the anti-charge adsorption stirring barrel 4 and is located above the anti-charge adsorption stirring barrel 4. The driving gear 22 is rotatably arranged inside the hollow support block 21, and the axis of the driving gear 22 is located on the central axis of the anti-charge adsorption stirring barrel 4. The two driven gears 23 are respectively meshed with the driving gear 22 and are symmetrically arranged on both sides of the driving gear 22. The included angle between the two driven gears 23 and the driving gear 22 is an obtuse angle. The driving gear 22 drives the first stirring portion 6 to rotate, and the driven gear 23 drives the second stirring portion 7 to rotate. Among them, the first stirring portion 6 here precisely peels the clay on the barrel wall through circular motion to avoid the problem of "incomplete scraping". The second stirring portion 7 strongly agitates the bottom material of the barrel to prevent deposition caused by gravity. Through the spatial staggered design, it is ensured that the movement trajectories complement each other, forming an efficient flow field, and the synergistic effect improves the overall mixing efficiency, eliminates local condensation, and ensures that the data collected by the detection system reflects the true mixing state.

[0030] To better avoid the formation of hard shells caused by charge adsorption on the metal barrel, the geometric shape of the barrel is optimized to reduce the contact area with clay and improve the fluidity of the material. Specifically, in one embodiment, the anti-charge adsorption stirring barrel 4 includes a conical barrel bottom 42 and a frustum-shaped barrel wall 41. The conical bottom surface of the conical barrel bottom 42 coincides with the frustum top surface of the frustum-shaped barrel wall 41, and the conical barrel bottom 42 and the frustum-shaped barrel wall 41 are connected as a whole. The inclination angle of the conical barrel bottom 42 helps to reduce the direct contact area between clay particles and the barrel wall, thereby reducing the formation of clay layers caused by charge adsorption. The conical design makes the material slide more easily during stirring, reducing material deposition caused by electrostatic adsorption. The inclined design of the conical barrel bottom 42 reduces the contact between clay and the barrel wall, further inhibiting adsorption. The frustum-shaped barrel wall 41 guides the material to gather towards the center, cooperating with the stirring to form a circulating flow, thereby reducing the probability of hard shell formation and improving the mixing uniformity of the material. In addition, the anti-charge adsorption stirring barrel 4 can also be designed as a non-metallic composite material according to needs, and the effect of reducing hard shell formation in cooperation with the conical barrel bottom 42 and the frustum-shaped barrel wall 41 will be better.

[0031] To avoid possible wear on the barrel wall during the peeling of the hard shell, in one embodiment, the first stirring part 6 includes two rotating connecting rods 61 and a first flexible scraper 62. The two ends of the two rotating connecting rods 61 are respectively connected to the driving shaft 24 and the first flexible scraper 62. The driving shaft 24 drives the rotating connecting rods 61 to rotate circumferentially, and the rotating connecting rods 61 drive the first flexible scraper 62 to cooperate with the barrel wall and peel off the clay hard shell layer adsorbed on the inner wall of the frustum-shaped barrel wall 41 through circumferential movement. The rotating connecting rods 61 and the first flexible scraper 62 are fixedly connected, and the rotating connecting rods 61 and the driving shaft 24 are fixedly connected. Moreover, the first flexible scraper 62 is matched and fitted with the inner wall of the frustum-shaped barrel wall 41. As Figure 2 and Figure 3 shown, the width of the first flexible scraper 62 is greater than half of the height of the frustum-shaped barrel wall 41 and less than the height of the frustum-shaped barrel wall 41. The flexible material avoids damage to the barrel wall by the metal scraper, protects the barrel wall while efficiently peeling the hard shell. In addition, the width of the scraper being greater than half of the barrel wall height can ensure that during rotation, the scraper can cover most areas of the barrel wall, thus achieving a comprehensive peeling of the hard shell layer. If the scraper width is too small, it may cause the hard shell layer not to be fully covered, leaving unpeeled parts. While the scraper width being less than the barrel wall height can avoid interference with the barrel bottom or the top of the barrel wall due to the overly long scraper during rotation, which can reduce the possibility of missed scraping and improve the peeling efficiency. In addition, there are certain variations in the height and diameter of the frustum-shaped barrel wall 41. Controlling the scraper width within this range can better adapt to the shape of the barrel wall, enabling the scraper to maintain good contact with the barrel wall and improving the peeling effect.

[0032] Further, in order to prevent materials from depositing at the bottom of the barrel or forming dead corners, in one embodiment, the second stirring part 7 includes two inclined rods 71 and two stirring rods 72. One end of each of the two inclined rods 71 penetrates through the centers of the two driven gears 23 respectively and moves synchronously with the two driven gears 23. The other ends of the two inclined rods 71 are respectively connected to the two stirring rods 72. The driving gear 22 drives the two driven gears 23 to rotate. The two driven gears 23 respectively drive the two inclined rods 71 to rotate. The two inclined rods 71 drive the two stirring rods 72 to stir the materials in the conical barrel bottom 42. Here, the two inclined rods 71 are fixedly connected to the driven gears 23, and the two driven gears 23 only rotate on the hollow support block 21, and their specific positions will not shift. Through the synchronous movement of the two inclined rods 71 and the two stirring rods 72, the materials in the conical barrel bottom 42 can be stirred more effectively. The design of the inclined rods 71 makes the stirring effect more uniform, which helps to prevent materials from depositing at the bottom of the barrel or forming dead corners. The fixed connection between the inclined rods 71 and the driven gears 23 ensures the stability of the stirring system, avoids shaking and jitter during movement, and improves the reliability of the stirring process. The rotation of the driven gears 23 on the hollow support block 21 will not shift, ensuring the precise positioning of the stirring rods 72 during the stirring process and making the stirring effect more uniform.

[0033] Since it is aimed at the quality inspection of road subbase construction, during the construction of road subbase, when materials such as cement, gravel, and soil are mixed, the change of temperature will also affect the bonding force between materials. Under low-temperature conditions, the bonding performance of materials may decrease, resulting in insufficient shear force. To avoid this problem, in one embodiment, the two stirring rods 72 are vertically arranged. The two inclined rods 71 are respectively connected to the centers of the two stirring rods 72 and are vertically arranged with the two stirring rods 72. The two ends of the two stirring rods 72 are respectively provided with second flexible scrapers 73, and the two second flexible scrapers 73 on the same stirring rod 72 are respectively arranged on the outer sides of the two ends of the stirring rod 72. The two vertically arranged stirring rods 72 generate strong shear force to break up the clay aggregation. The inclined rods 71 drive the stirring rods 72 to move at multiple angles, covering the entire area of the conical barrel bottom 42. The obtuse angle meshing design of the inclined rods 71 and the driving gears disperses the force, improves the structural stability, ensures the full mixing of the bottom materials, and avoids misjudgment of the detection system due to local unmixed areas.

[0034] The above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A quality inspection system for road subbase construction, characterized in that, It includes a control terminal, an anti-charge adsorption stirring barrel, and a driving unit communicatively connected to the control terminal. A first stirring part and a second stirring part are coaxially arranged in the anti-charge adsorption stirring barrel. The first stirring part and the second stirring part are linked by a transmission shaft and driven by the driving unit to rotate synchronously. The first stirring part extends radially along the anti-charge adsorption stirring barrel. The outer edge of the first stirring part is in clearance fit with the barrel wall of the anti-charge adsorption stirring barrel and peels off the clay hard shell layer adsorbed on the barrel wall through circular motion. The second stirring part shears and mixes the materials at the bottom of the anti-charge adsorption stirring barrel through rotational motion. The first stirring part and the second stirring part form a spatial intersection in the movement trajectory, forming a synergistic effect on material flow and clay peeling; The control terminal dynamically adjusts the rotation speed of the driving unit to match the clay peeling and mixing rate by presetting the dielectric constant detection parameters of the mixed materials and receiving the detection data in real time, so as to eliminate the composition deviation caused by charge adsorption and improve the detection accuracy; A driving shaft part is arranged in the anti-charge adsorption stirring barrel. The first stirring part and the second stirring part are both arranged on the driving shaft part. The driving shaft part includes a hollow support block, a driving gear, two driven gears, and a driving shaft passing through the axis of the driving gear; The first stirring part includes two rotating connecting rods and a first flexible scraper. The two ends of the two rotating connecting rods are respectively connected to the driving shaft and the first flexible scraper. The driving shaft drives the rotating connecting rods to rotate circularly. The rotating connecting rods drive the first flexible scraper to cooperate with the barrel wall and peel off the clay hard shell layer adsorbed on the inner wall of the frustum-shaped barrel wall through circular motion; The second stirring part includes two inclined rods and two stirring rods. One ends of the two inclined rods respectively penetrate through the axes of the two driven gears and move synchronously with the two driven gears. The other ends of the two inclined rods are respectively connected to the two stirring rods. The driving gear drives the two driven gears to rotate. The two driven gears respectively drive the two inclined rods to rotate. The two inclined rods drive the two stirring rods to stir the materials in the conical barrel bottom; Second flexible scrapers are respectively arranged at both ends of the two stirring rods, and the two second flexible scrapers on the same stirring rod are respectively arranged on the outer sides of both ends of the stirring rod.

2. The quality inspection system for road subbase construction according to claim 1, characterized in that The driving shaft is located in the hollow support block. The driving shaft is externally connected to a driving member. The hollow support block is arranged along the central axis of the anti-charge adsorption stirring barrel and is located above the anti-charge adsorption stirring barrel. The driving gear is rotatably arranged in the hollow support block, and the axis of the driving gear is located on the central axis of the anti-charge adsorption stirring barrel. The two driven gears are respectively meshed with the driving gear and symmetrically arranged on both sides of the driving gear. The included angle between the two driven gears and the driving gear is an obtuse angle. The driven gears drive the second stirring part to rotate.

3. The quality inspection system for road subbase construction according to claim 2, characterized in that, The anti-charge adsorption stirring barrel includes a conical barrel bottom and a frustum-shaped barrel wall. The conical bottom surface of the conical barrel bottom coincides with the frustum top surface of the frustum-shaped barrel wall, and the conical barrel bottom and the frustum-shaped barrel wall are connected as a whole.

4. A quality inspection system for road subbase construction according to claim 3, characterized in that, The width of the first flexible scraper is greater than half of the height of the frustum-shaped barrel wall and less than the height of the frustum-shaped barrel wall.

5. A quality inspection system for road subbase construction according to claim 1, characterized in that, The two stirring rods are vertically arranged.

6. The quality inspection system for road subbase construction according to claim 1, characterized in that, The two diagonal rods are respectively connected to the centers of the two stirring rods and are perpendicular to the two stirring rods.

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