Road material evaluation system and evaluation method

Abstract

The invention discloses a road material evaluation system and evaluation method, and relates to the field of road construction, the road material evaluation system comprises a test board, one side of the test board is provided with an anti-fracture table, one side, away from the anti-fracture table, of the test board is provided with an anti-compression table, and the test board is fixedly provided with two symmetrical collection covers; the two collecting covers correspond to the compression-resistant table and the fracture-resistant table, collecting and conveying mechanisms are arranged at the bottoms of the collecting covers, and auxiliary vibration mechanisms are arranged at the bottoms of the collecting covers. The test bench is integrated with an independent fracture-resistant and compression-resistant station with a closed collecting cover, chippings and dust can be completely restrained in the cover during testing, and after testing is finished, a collecting and conveying mechanism at the bottom of the cover and an auxiliary vibration mechanism automatically work cooperatively, so that guiding and collecting of fine materials and ash removing and shaking off of large materials are achieved respectively; therefore, chipping particles can be efficiently collected while the chipping particles generated in the testing process are isolated, and the trouble of subsequent cleaning is reduced.

Description

Technical Field

[0001] This application relates to the field of road construction, and in particular to a road material evaluation system and evaluation method. Background Technology

[0002] As a key area of ​​infrastructure construction, road engineering directly affects the safety and durability of transportation. To ensure that roads can withstand vehicle loads and environmental effects during long-term service, the mechanical properties of various materials constituting the road surface must be accurately assessed before construction. Among these, flexural strength and compressive strength are two of the most critical evaluation indicators, reflecting the material's ability to resist bending deformation and compressive failure, respectively.

[0003] Currently, the industry generally uses separate dedicated equipment to test these two indicators of road materials. Flexural strength testing is usually completed on a flexural testing machine, while compressive strength testing requires a dedicated compressive testing machine. This separate testing mode means that the laboratory needs to equip and maintain two sets of equipment at the same time, which not only occupies valuable laboratory space and increases the cost of equipment procurement and maintenance, but also makes the testing process cumbersome and time-consuming. Therefore, integrated flexural and compressive strength testing machines are now more commonly used, which can complete the evaluation experiments of flexural strength and compressive strength on a single testing workbench.

[0004] However, in the existing testing process, whether it is flexural or compressive testing, when the specimen fails under the ultimate load, a large amount of debris, fragments and dust will inevitably be generated. These wastes often fly at high speed and are scattered around the equipment and the entire laboratory environment.

[0005] To prevent debris from flying, current equipment typically uses an openable protective cover over the test area to block debris and fragments. However, the blocked debris and fragments still scatter around the test area, requiring operators to spend a significant amount of time and effort manually cleaning them up. Summary of the Invention

[0006] The purpose of this application is to address the problem mentioned in the background art that current equipment typically uses an openable protective cover to prevent debris from splashing in the test area, thus blocking debris and fragments. However, the blocked debris and fragments still scatter in the test area, requiring operators to spend a lot of time and effort to manually clean them up. This application provides a road material evaluation system and evaluation method.

[0007] To achieve the above objectives, this application specifically adopts the following technical solution: A road material evaluation system and method include a test bench, a display screen mounted in the center of the test bench, an operating device mounted on the front side of the test bench, a flexural strength platform mounted on one side of the test bench, and a compression strength platform mounted on the side of the test bench away from the flexural strength platform. A hydraulic device corresponding to the flexural strength platform and the compression strength platform is installed inside the test bench, and its conveying end is fixedly connected to the corresponding flexural strength platform and compression strength platform. Limit frames are provided on both the flexural strength platform and the compression strength platform, and the limit frames are fixedly connected to the test bench. A flexural strength head is fixed to the limit frame on the flexural strength platform, and a compression strength head is fixed to the limit frame on the compression strength platform. Two symmetrical collection hoods are fixed on the test bench, corresponding to the compression strength platform and the flexural strength platform. Two symmetrical collection chambers are fixed on the side of the test bench away from the operating device, corresponding to the collection hoods. A collection and conveying mechanism is provided at the bottom of each collection hood, and an auxiliary vibration mechanism is provided at the bottom of each collection hood.

[0008] By adopting the above technical solution, the test bench integrates independent bending and compression resistance stations with sealed collection hoods. During testing, the debris and dust can be completely confined inside the hood. After the test, the collection and conveying mechanism and the auxiliary vibration mechanism at the bottom of the hood work together automatically to guide and collect fine materials and shake off large pieces of dust, respectively. This allows for the isolation and collection of debris particles generated during the test, reducing the hassle of subsequent cleaning.

[0009] Furthermore, the collection and conveying mechanism includes a support shaft disposed inside the collection hood, with both ends of the support shaft rotatably connected to the inner wall of the collection hood. A collection plate is fixed on the support shaft, and the collection plate is inclined. A corrugated plate is disposed at one end of the collection plate away from the support shaft. One side of the corrugated plate is fixedly connected to the collection plate, and the other side is fixedly connected to the test bench. A guide plate is fixedly disposed at the bottom of the side of the collection plate near the support shaft. A guide opening corresponding to the guide plate is provided on the collection plate. The guide plate corresponds to the collection chamber. A vibration component is disposed on the side of the collection plate near the corrugated plate, and a blocking component is disposed on the collection plate.

[0010] By adopting the above technical solution, the inclined collection plate and its flexible corrugated plate form a basic waste collection and guiding channel, which can receive and guide broken materials. When the vibration component drives the collection plate to swing slightly around the axis, it can accelerate the flow of materials on the plate, thereby constructing a waste pre-collection and guiding channel that can utilize gravity in static conditions and enhance flow in dynamic conditions. This improves the effect of subsequent cleaning and reduces the possibility of test specimens causing debris to scatter everywhere in the working area and contaminate the test area due to test specimens.

[0011] Furthermore, the vibration assembly includes a vibration head rotatably connected to the inner wall of the collection hood. The vibration head is an elliptical cylinder. A vibration motor is fixed to one side of the collection hood, and the output end of the vibration motor is fixedly connected to the vibration head. A limiting spring is provided at the bottom of the collection plate, and both ends of the limiting spring are fixedly connected to the collection plate and the test platform. The core of the vibration assembly is an elliptical cylinder vibration head driven by a vibration motor. The vibration head is horizontally installed below the collection plate, and its long axis periodically contacts and lifts the bottom surface of the collection plate.

[0012] By adopting the above technical solution, the elliptical vibrating head periodically lifts the collection plate when it rotates, and together with the rebound effect of the limiting spring, it forms a stable mechanical excitation source, which significantly promotes the directional flow of materials on the plate and the cleaning efficiency. This provides a stable, reliable and easy-to-control vibration source for the collection plate, effectively destroying the static friction between waste and the plate surface, as well as between waste particles, and causing them to flow to lower places.

[0013] Furthermore, the blocking assembly includes two fixed rods symmetrically fixed to the inner wall of the collection hood, a plurality of support rods fixed between the two fixed rods, and a support plate fixed between the two fixed rods.

[0014] By adopting the above technical solution, the barrier assembly consisting of a fence made of support rods and a support plate can effectively intercept and buffer falling large pieces of test specimen fragments. This not only prevents large pieces of material from directly impacting and clogging the outlet of the collection plate, but also achieves the initial separation of large pieces of material from fine particulate dust, creating conditions for subsequent differentiated cleaning.

[0015] Furthermore, the collecting plate is provided with several movable grooves, and a corrugated rubber ring is fixed in the movable groove. The corrugated rubber ring corresponds to the output end of the hydraulic device and the limiting frame.

[0016] By adopting the above technical solution, a corrugated rubber ring is nested in the movable groove at the output end of the hydraulic device and the limit frame, thereby using its pleated structure to achieve dynamic sealing, effectively preventing dust from escaping from key gaps and ensuring the sealing of the collection hood.

[0017] Furthermore, the auxiliary vibration mechanism includes two symmetrically fixed connecting rods inside the collection hood. The two connecting rods are located below the support rods. Several limiting rods are fixed on the two connecting rods. A vibration plate is provided on each of the two connecting rods. The limiting rods pass through the vibration plate and are slidably connected to the vibration plate. Several top plates are fixed between the two vibration plates. The top plates are located between adjacent support rods. A synchronization component is provided between the several top plates and the vibration head.

[0018] By adopting the above technical solution, the top plate array performs vertical reciprocating motion under the drive of the synchronous component. Its top can accurately pass through the gap of the upper support rod to push the intercepted large pieces of waste. This enables proactive and mechanized intervention and cleaning of the intercepted large pieces of waste, reducing the possibility that the debris particles attached to the large pieces of waste may not fall off, and ensuring the thoroughness and reliability of waste collection.

[0019] Furthermore, the synchronization component includes a support block disposed within the collection hood, the support block being fixedly connected to the test platform, a rotating wheel being rotatably connected to the support block, a transmission rod being eccentrically rotatably connected to the rotating wheel, a reciprocating rod being rotatably connected to the end of the transmission rod away from the rotating wheel, the reciprocating rod penetrating the collection plate, and the collection plate having a movable groove corresponding to the reciprocating rod, and a corresponding corrugated rubber ring being fixed thereon, a reciprocating plate being fixed to the end of the reciprocating rod away from the transmission rod, the reciprocating plate being fixedly connected to a portion of the top plate, a limit ring being fixed to the support block, the reciprocating rod penetrating the limit ring and being slidably connected to the limit ring, and a transmission component being disposed between the rotating wheel and the vibration head.

[0020] By adopting the above technical solution, the transmission wheel drives the transmission rod, which in turn causes the transmission rod to move eccentrically, driving the reciprocating plate. The reciprocating rod moves back and forth under the restriction of the limiting ring, thus enabling the top plate to move back and forth.

[0021] Furthermore, the transmission component includes a rotating shaft fixed on the support block, the rotating shaft passing through the support block and fixedly connected to the rotating wheel, a first transmission wheel fixed on the rotating shaft, a second transmission wheel fixed on the vibrating head, and a transmission belt connecting the first transmission wheel and the second transmission wheel.

[0022] By adopting the above technical solution, a second transmission wheel is installed on the rotating shaft of the vibrating head, and a first transmission wheel is installed on the rotating shaft of the support block. The two are connected by a transmission belt, thereby ensuring that the rotating wheel and the vibrating head rotate synchronously.

[0023] An evaluation method for a road material evaluation system, the evaluation method being as follows: S1: Preparation and Placement: Open the sealed door of the collection hood, place the road material specimen on the corresponding fixture at the flexural strength test station or compressive strength test station, and then close the sealed door; S2: Closed Test: Start the test procedure. The hydraulic device drives the bending head or the compression head to load the specimen until the specimen is broken. The broken waste is confined in a closed collection hood. S3: Automatic cleaning: After the test, the vibration generator at the bottom of the collection hood will start automatically, driving the tiltable collection plate to vibrate, so that the fine particles of waste on the plate will move down the inclined surface. At the same time, the auxiliary vibration mechanism will move synchronously to disturb the large pieces of waste stuck on the blocking component and make them fall off the collection plate. S4: Waste collection: All waste is transported via a collection plate and finally falls into the corresponding waste collection compartment through the guide port; S5: Cycle and Evaluation: Open the sealed door, remove the remaining large specimen, the system records and processes the test data, and outputs the flexural or compressive strength evaluation results of the material through the display, in preparation for the next test.

[0024] In summary, this application includes at least one of the following beneficial effects; 1. In this application, a vibrating motor located on one side of the collection hood is immediately activated. The vibrating head periodically pushes up the collection plate below it, and the collection plate rebounds under the action of the bottom limiting spring, thereby generating continuous vibration. This vibration forces the fine particles and dust falling on the inclined collection plate to flow faster along the slope towards the guide opening. At the same time, the rotational motion of the vibrating head is synchronously transmitted to the rotating wheel through the transmission belt connection. The rotating wheel converts the rotational motion into linear reciprocating motion through the eccentrically rotating transmission rod and reciprocating rod, driving a row of top plates fixedly connected to the reciprocating plate to move up and down. These top plates precisely pass through the adjacent support rods in the blocking assembly. The gaps between the test pieces allow for upward pushing of large fragments intercepted on the support rod fence or support plate, causing them to turn over and loosen. This shakes off the dust adhering to their surfaces, achieving complete confinement of high-speed flying fragments and diffuse dust generated during test piece destruction within a sealed space. This enables full-coverage cleaning from micro-dust to large blocks, reducing manual cleaning work by operators. A single vibration motor drives the collection plate to vibrate and the top plate to reciprocate simultaneously through mechanical linkage, achieving efficient "dual-purpose" cleaning. This reduces equipment failures, data anomalies, or maintenance downtime caused by waste accumulation or dust intrusion, thereby improving the long-term reliability and repeatability of test data.

[0025] 2. In this application, movable slots are pre-cut on the collection plate corresponding to the downward extension positions of the hydraulic device output end and the downward extension positions of the limiting frame. In each movable slot, a corrugated rubber ring is nested and fixed. The inner diameter of the rubber ring is slightly smaller than the diameter of the component passing through it. Its corrugated and pleated structure gives it good axial extensibility and radial sealing performance. During testing, the hydraulic piston rod and the limiting frame move through these corrugated rubber rings. The corrugated rubber rings are stretched, but always remain in close contact with the surface of the moving parts. This achieves the purpose of forming a dynamic seal when the specimen breaks and dust flies, while not hindering the vibration of the collection plate, effectively preventing dust from escaping from these key moving gaps.

[0026] 3. In this application, two fixed rods are horizontally parallel and fixed to the inner walls of both sides of the collection hood. Between these two fixed rods, multiple parallel support rods are longitudinally welded to form a fence. At the same time, a support plate is fixed between the two fixed rods. The support plate is located in the upper middle part of the inclined surface of the collection plate. The output end of the hydraulic device and the limiting frame pass through the support plate. When the specimen is damaged, larger fragments fall. These large fragments are first intercepted by the fence formed by the support rods or fall on the support plate, thus avoiding direct impact and accumulation near the guide port at the bottom of the collection plate, which would cause blockage. Fine particles and dust pass through the gaps between the support rods and fall directly onto the collection plate. At the same time, the initial separation of materials of different sizes is achieved, which facilitates differentiated processing. Attached Figure Description

[0027] Figure 1 This is a first three-dimensional structural schematic diagram of the road material evaluation system in this application; Figure 2 This is a second three-dimensional structural diagram of the road material evaluation system in this application; Figure 3 This is a first three-dimensional structural schematic diagram of the collection and conveying mechanism and the auxiliary vibration mechanism in this application; Figure 4 This is a second three-dimensional structural diagram of the collection and conveying mechanism and the auxiliary vibration mechanism in this application; Figure 5 This is a third-dimensional structural diagram of the collection and conveying mechanism and the auxiliary vibration mechanism in this application; Figure 6 This is a three-dimensional structural diagram of the auxiliary vibration mechanism in this application.

[0028] Explanation of reference numerals in the attached figures: 1. Test bench; 2. Display; 3. Operating device; 4. Bending table; 5. Compression table; 6. Collection hood; 7. Collection chamber; 8. Collection and conveying mechanism; 81. Support shaft; 82. Collection plate; 83. Guide plate; 84. Corrugated plate; 85. Vibration assembly; 851. Vibration head; 852. Vibration motor; 853. Limiting spring; 86. Blocking assembly; 861. Support rod; 862. Support plate; 863. Fixing rod; 87. Corrugated rubber ring one; 9. Auxiliary vibrator Components; 91. Connecting rod; 92. Vibrating plate; 93. Top plate; 94. Limiting rod; 95. Synchronization assembly; 951. Support block; 952. Rotating wheel; 953. Limiting ring; 954. Reciprocating rod; 955. Transmission component; 9551. Rotating shaft; 9552. Transmission wheel one; 9553. Transmission wheel two; 9554. Transmission belt; 956. Corrugated rubber ring two; 957. Transmission rod; 958. Reciprocating plate; 10. Limiting frame; 11. Anti-pressure head; 12. Anti-bending head. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 —6 provides further details regarding this application.

[0030] This application discloses a road material evaluation system and evaluation method.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A road material evaluation system includes a test bench 1, a display 2 installed in the middle of the test bench 1, an operating device 3 installed on the front side of the test bench 1, a bending resistance table 4 installed on one side of the test bench 1, and a compression resistance table 5 installed on the side of the test bench 1 away from the bending resistance table 4. A hydraulic device corresponding to the bending resistance table 4 and the compression resistance table 5 is installed inside the test bench 1, and the conveying end is fixedly connected to the corresponding bending resistance table 4 and the compression resistance table 5. Limiting frames 10 are provided on both the bending resistance table 4 and the compression resistance table 5, and the limiting frames 10 are fixedly connected to the test bench 1. A bending resistance head 12 is fixed to the limiting frame 10 on the bending resistance table 4, and a compression resistance head 11 is fixed to the limiting frame 10 on the compression resistance table 5. Two symmetrical collection covers 6 are fixed on the test bench 1, corresponding to the compression resistance table 5 and the bending resistance table 4. Two symmetrical collection chambers 7 are fixed on the side of the test bench 1 away from the operating device 3, corresponding to the collection covers 6. A collection conveying mechanism 8 is provided at the bottom of the collection covers 6, and an auxiliary vibration mechanism 9 is provided at the bottom of the collection covers 6.

[0032] Test bench 1 integrates two independent testing units for flexural and compressive strength. The display 2 and operating device 3 are located in front of the operator for easy monitoring and control. Above each test bench 1, a corresponding flexural head 12 or compressive head 11 is fixed via a limiting bracket 10 to ensure the verticality and stability of the load. Each testing station is equipped with an independent collection hood 6, which completely encloses the testing area. A transparent sealing door is hinged to the collection hood 6. The bottom of the hood is designed with a collection and conveying mechanism 8 and an auxiliary vibration mechanism 9, which are connected to the collection chamber 7 located at the rear of the test bench 1. The operator places the specimen at each of the two stations and conducts the test. During testing, the collection hood 6 forms a sealed space, trapping fragments and powder generated when the specimen is damaged. The dust is completely contained within the enclosure. After the test, the bottom collection and conveying mechanism 8 and the auxiliary vibration mechanism 9 are activated and work together. By equipping each test station with a protective unit that integrates enclosure, collection and conveying functions, the collection and conveying mechanism 8 collects and conveys the generated debris. At the same time, the auxiliary vibration mechanism 9 shakes the large pieces of test specimens that fall during the test, causing the dust on the large pieces of test specimens to fall off. This allows the generated debris particles to be isolated during the test and collected, reducing the trouble of subsequent cleaning. It also reduces equipment failures, data anomalies or maintenance downtime caused by waste accumulation or dust intrusion, thereby improving the long-term reliability and repeatability of test data.

[0033] Reference Figure 3, Figure 4 and Figure 5 The collection and conveying mechanism 8 includes a support shaft 81 disposed inside the collection hood 6. Both ends of the support shaft 81 are rotatably connected to the inner wall of the collection hood 6. A collection plate 82 is fixed on the support shaft 81. The collection plate 82 is inclined. A corrugated plate 84 is disposed at one end of the collection plate 82 away from the support shaft 81. One side of the corrugated plate 84 is fixedly connected to the collection plate 82, and the other side is fixedly connected to the test bench 1. A guide plate 83 is fixedly disposed at the bottom of the side of the collection plate 82 near the support shaft 81. A guide opening corresponding to the guide plate 83 is opened on the collection plate 82. The guide plate 83 corresponds to the collection chamber 7. A vibration component 85 is disposed on the side of the collection plate 82 near the corrugated plate 84. A blocking component 86 is disposed on the collection plate 82.

[0034] Inside the collection hood 6, a support shaft 81 horizontally penetrates both sides of the hood wall and is rotatable. A roughly rectangular collection plate 82 is fixed to this shaft and is pre-set to be tilted towards one side of the support shaft 81. The higher edge of the collection plate 82 is connected to the test bench 1 through a flexible corrugated plate 84, which allows the collection plate 82 to swing within a certain angle and also serves to seal and prevent leakage. At the lowest point of the inclined surface of the collection plate 82, a guide opening is provided, and an inclined guide plate 83 is fixedly connected below it, leading directly to the external collection chamber 7. After the specimen breaks, the resulting fragments first fall onto the blocking assembly 86. The blocking assembly 86 blocks large pieces of the specimen. The fragments are blocked, and small particles pass through the blocking component 86 and fall directly onto the collecting plate 82. Under the action of gravity, the fine material automatically slides towards the lower guide port. At the same time, the vibration component 85 is activated, and the collecting plate 82 generates a slight oscillation around the support shaft 81, which accelerates the material flow. By setting the tiltable collecting plate 82 and the flexibly connected corrugated plate 84, a waste pre-collection and guiding channel that can utilize gravity in static conditions and enhance flow in dynamic conditions is constructed, which improves the effect of subsequent cleaning and reduces the possibility of test specimens scattering everywhere in the working area and contaminating the test area.

[0035] Reference Figure 3 and Figure 5 The vibration assembly 85 includes a vibration head 851 rotatably connected to the inner wall of the collection shroud 6. The vibration head 851 is an elliptical cylinder. A vibration motor 852 is fixed on one side of the collection shroud 6. The output end of the vibration motor 852 is fixedly connected to the vibration head 851. A limiting spring 853 is provided at the bottom of the collection plate 82. Both ends of the limiting spring 853 are fixedly connected to the collection plate 82 and the test platform 1. The core of the vibration assembly 85 is an elliptical cylinder vibration head 851 driven by the vibration motor 852. The vibration head 851 is horizontally installed below the collection plate 82, and its long axis periodically contacts and lifts the bottom surface of the collection plate 82.

[0036] Several limiting springs 853 are installed between the bottom of the collecting plate 82 and the base of the test bench 1. They provide restoring force after the vibrating head 851 is raised, causing the collecting plate 82 to rebound and jointly form a continuous up-and-down vibration. The vibration motor 852 starts and drives the elliptical vibrating head 851 to rotate at a constant speed. When the long axis end of the vibrating head 851 contacts the collecting plate 82, it lifts it up. When the short axis end contacts it, the collecting plate 82 falls back under the action of the limiting springs 853, causing the collecting plate 82 and the material on it to generate high-frequency micro-amplitude bumps. By adopting a mechanical excitation method that combines the elliptical vibrating head 851 and the limiting springs 853, a stable, reliable and easy-to-control vibration source is provided for the collecting plate 82, which effectively breaks the static friction between the waste and the plate surface, as well as between the waste particles, and promotes them to flow to lower places.

[0037] Reference Figure 3 and Figure 4 The blocking assembly 86 includes two symmetrically fixed rods 863 fixed to the inner wall of the collection cover 6, a plurality of support rods 861 fixed between the two fixed rods 863, and a support plate 862 fixed between the two fixed rods 863.

[0038] The blocking assembly 86 is installed above the collecting plate 82 and is horizontally and parallelly fixed to the inner walls of both sides of the collecting cover 6 by two fixing rods 863. Between these two fixing rods 863, multiple parallel support rods 861 are longitudinally welded to form a fence. At the same time, a support plate 862 is also fixed between the two fixing rods 863. The support plate 862 is located in the upper-middle area of ​​the inclined surface of the collecting plate 82. The output end of the hydraulic device and the limit frame 10 both pass through the support plate 862. When the specimen is damaged, larger fragments fall. First, the debris is intercepted by the fence formed by the support rods 861 or falls onto the support plate 862, preventing it from directly impacting and accumulating near the guide port at the bottom of the collection plate 82, thus avoiding blockage. Fine particles and dust pass through the gaps in the support rods 861 and fall directly onto the collection plate 82. By setting up the blocking component 86 composed of the support rods 861 and the support plate 862, the initial interception and buffering of large debris is achieved, preventing it from directly impacting the key outlet and causing blockage. At the same time, the initial separation of materials of different sizes is achieved, which facilitates differentiated processing.

[0039] Reference Figure 2 , Figure 3 and Figure 4 The collecting plate 82 has several movable slots, and a corrugated rubber ring 87 is fixed in the movable slot. The corrugated rubber ring 87 corresponds to the output end of the hydraulic device and the limit frame 10.

[0040] On the collecting plate 82, corresponding to the downward extension positions of the hydraulic device output end and the downward extension positions of the limiting frame 10, movable slots are pre-cut. In each movable slot, a corrugated rubber ring 87 is nested and fixed. The inner diameter of the rubber ring is slightly smaller than the diameter of the component passing through it. Its corrugated structure gives it good axial extensibility and radial sealing performance. During testing, the hydraulic piston rod and the limiting frame 10 move through these corrugated rubber rings 87. The corrugated rubber rings 87 are stretched, but always remain in close contact with the surface of the moving parts. When the specimen breaks and dust flies, the corrugated rubber rings form a dynamic seal, effectively preventing dust from escaping from these key moving gaps. By setting a retractable corrugated rubber ring 87 seal, when the collecting plate 82 vibrates, the collecting plate 82 drives the corrugated rubber ring 87 to move, thereby allowing the collecting plate 82 to vibrate while reducing the escape of pulverized particles from the movable slots.

[0041] Reference Figure 3 and Figure 6 The auxiliary vibration mechanism 9 includes two symmetrically fixed connecting rods 91 inside the collection cover 6. The two connecting rods 91 are located below the support rods 861. Several limiting rods 94 are fixed on the two connecting rods 91. A vibration plate 92 is provided on each of the two connecting rods 91. The limiting rods 94 pass through the vibration plate 92 and are slidably connected to the vibration plate 92. Several top plates 93 are fixed between the two vibration plates 92. The top plates 93 are located between adjacent support rods 861. A synchronization component 95 is provided between the several top plates 93 and the vibration head 851.

[0042] Two connecting rods 91 are fixed parallel to each other inside the collection cover 6, located below the support rod 861. Multiple limiting rods 94 are vertically fixed to the two connecting rods 91. Two vibrating plates 92 are respectively fitted onto the limiting rods 94 at both ends and can slide along them. Multiple top plates 93 are horizontally welded between the two vibrating plates 92, and the position of each top plate 93 precisely corresponds to the gap between the two support rods 861 above. While the vibrating head 851 drives the collection plate 82 to vibrate, the vibrating head 851 uses the synchronization component 95 to drive several top plates 93, causing the top plates 93 to reciprocate. The vibrating plates 92 drive all the top plates 93 together along the... The top plate 93 moves vertically back and forth. When it rises, its top end passes through the gap between the upper support rods 861, pushing upwards the large pieces of waste that are blocked on the support rods 861. This periodic pushing action loosens and overturns the large pieces of waste, allowing the particles attached to its surface to detach from the large pieces of test specimen and fall onto the collection plate 82 below. By setting up an array of top plates 93 that can move back and forth and are precisely aligned with the blocking gaps, the intercepted large pieces of waste can be actively and mechanically intervened and cleaned up, reducing the possibility that the debris particles attached to the large pieces of waste will not fall off, thus ensuring the thoroughness and reliability of waste collection.

[0043] Reference Figure 3 and Figure 6 The synchronization component 95 includes a support block 951 disposed inside the collection cover 6. The support block 951 is fixedly connected to the test table 1. A rotating wheel 952 is rotatably connected to the support block 951. A transmission rod 957 is eccentrically rotatably connected to the rotating wheel 952. A reciprocating rod 954 is rotatably connected to the end of the transmission rod 957 away from the rotating wheel 952. The reciprocating rod 954 passes through the collection plate 82, and the collection plate 82 has a movable groove corresponding to the reciprocating rod 954, and a corresponding corrugated rubber ring 956 is fixed thereon. A reciprocating plate 958 is fixed to the end of the reciprocating rod 954 away from the transmission rod 957. The reciprocating plate 958 is fixedly connected to a part of the top plate 93. A limit ring 953 is fixed on the support block 951. The reciprocating rod 954 passes through the limit ring 953 and is slidably connected to the limit ring 953. A transmission component 955 is disposed between the rotating wheel 952 and the vibrating head 851.

[0044] In addition, the transmission component 955 includes a rotating shaft 9551 fixed on the support block 951. The rotating shaft 9551 passes through the support block 951 and is fixedly connected to the rotating wheel 952. A first transmission wheel 9552 is fixed on the rotating shaft 9551, and a second transmission wheel 9553 is fixed on the vibrating head 851. A transmission belt 9554 is used to drive the first transmission wheel 9552 and the second transmission wheel 9553.

[0045] A second transmission wheel 9553 is mounted on the rotating shaft of the vibrating head 851, and a first transmission wheel 9552 is mounted on the rotating shaft 9551 of the support block 951. The two are connected by a transmission belt 9554 to ensure that the rotating wheel 952 rotates synchronously with the vibrating head 851. A transmission rod 957 is eccentrically hinged to the rotating wheel 952, and a reciprocating rod 954 is hinged to the other end of the transmission rod 957. The reciprocating rod 954 passes through a sealed movable groove on the collecting plate 82, and its end is rigidly connected to part of the top plate 93 through a reciprocating plate 958. When the vibrating motor 852 works, it drives the vibrating head 851 to rotate, generating vibration on the collecting plate 82. At the same time, the vibration is transmitted through the transmission belt 9554. The rotating wheel 952 rotates synchronously. The rotational motion of the rotating wheel 952 is converted into the strictly linear reciprocating motion of the reciprocating rod 954 through the eccentric linkage mechanism. The reciprocating rod 954 drives the top plate group 93 to perform synchronous linear reciprocating motion, realizing the lifting and disturbance of large pieces of material. Through the purely mechanical transmission belt 9554 and the eccentric transmission rod 957 structure, the rotational power of the single vibration motor 852 is synchronously converted into two different forms of mechanical action: the vibration of the collection plate 82 and the reciprocating lifting of the top plate group 93. Thus, a perfect coordination of two cleaning functions is achieved with a single power source. The structure is compact, the linkage is reliable, and the timing is naturally matched.

[0046] An evaluation method for a road material evaluation system, the evaluation method being as follows: S1: Preparation and Placement: Open the sealed door of the collection hood 6, place the road material specimen on the corresponding fixture at the flexural strength test station or compressive strength test station, and then close the sealed door; S2: Closed test: Start the test procedure, the hydraulic device drives the bending head 12 or the compression head 11 to load the specimen until the specimen is broken, and the broken waste is confined in the closed collection hood 6; S3: Automatic cleaning: After the test, the vibration generation mechanism at the bottom of the collection cover 6 is automatically started, driving the tiltable collection plate 82 to vibrate, so that the fine particles of waste on the plate move down the inclined surface. At the same time, the auxiliary vibration mechanism 9 moves synchronously to disturb the large pieces of waste that are stuck on the blocking component 86, so that they fall off onto the collection plate 82. S4: Waste collection: All waste is transported via collection plate 82 and finally falls into the corresponding waste collection chamber 7 through the guide port; S5: Cycle and Evaluation: Open the sealed door, remove the remaining large specimen, the system records and processes the test data, and outputs the flexural or compressive strength evaluation results of the material through display 2, in preparation for the next test.

[0047] Working principle: The operator first opens the transparent sealed door on the collection hood 6, and accurately places the prepared road material on the support roller of the bending table 4 or the center of the lower pressure plate of the compression table 5. Then, the sealed door is closed, and the parameters are set and the test program is started through the operating device 3 on the front of the test bench 1. At this time, the corresponding hydraulic device built into the test bench 1 starts to work. Its conveying end pushes the upper limit frame 10 and the bending head 12 or compression head 11 fixed on it to descend at a uniform speed, applying load to the specimen. During the loading process, the entire test area is completely covered by the closed collection hood 6. The fragments, pieces and dust generated at the moment of specimen failure are effectively constrained inside the hood and cannot splash into the external environment.

[0048] After the test is completed, the system automatically enters the cleaning phase. The vibration motor 852 located on one side of the collection hood 6 immediately starts, driving the elliptical vibration head 851 to rotate. The vibration head 851 periodically pushes up the collection plate 82 below it, and the collection plate 82 rebounds under the action of the bottom limiting spring 853, thus generating continuous vibration. This vibration forces the fine particles and dust falling on the inclined collection plate 82 to flow faster along the slope towards the guide port. At the same time, the vibration head 851 is connected by the transmission belt 9554. The rotational motion of 1 is synchronously transmitted to the rotating wheel 952. The rotating wheel 952 converts the rotational motion into linear reciprocating motion through the eccentrically rotating transmission rod 957 and the reciprocating rod 954, driving a row of top plates 93 fixedly connected to the reciprocating plate 958 to move up and down. These top plates 93 precisely pass through the gaps between adjacent support rods 861 in the blocking assembly 86, pushing upwards the large pieces of specimen fragments intercepted on the support rod 861 fence or support plate 862, causing them to turn over and loosen, and the dust attached to their surface is thus shaken off.

[0049] After a preset period of automatic vibration and jacking cleaning, all waste materials, whether fine materials falling directly onto the collection plate 82 or large pieces detached from the blocking component 86 and dust shaken off their surface, are conveyed to the guide port at the lowest point of the collection plate 82 and slid through the inclined guide plate 83 into the corresponding sealed collection chamber 7 at the rear of the test bench 1 for temporary storage. Finally, the operator can open the sealed door to inspect and remove any remaining large pieces of the specimen. The system automatically processes the sensor data and displays and records the flexural or compressive strength evaluation results of the specimen on the display 2 in the middle of the test bench 1.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road material evaluation system, comprising a test bench (1), characterized in that: A display (2) is installed in the middle of the test bench (1). An operating device (3) is installed on the front side of the test bench (1). A bending stage (4) is installed on one side of the test bench (1). A compression stage (5) is installed on the side of the test bench (1) away from the bending stage (4). A hydraulic device corresponding to the bending stage (4) and the compression stage (5) is installed inside the test bench (1), and the conveying end is fixedly connected to the corresponding bending stage (4) and compression stage (5). A limit frame (10) is provided on both the bending stage (4) and the compression stage (5). The limit frame (10) is fixedly connected to the test bench (1). The limiting frame (10) on the folding table (4) is fixed with an anti-folding head (12), the limiting frame (10) on the pressure table (5) is fixed with an anti-pressure head (11), the test table (1) is fixed with two symmetrical collection covers (6), the two collection covers (6) correspond to the pressure table (5) and the folding table (4), the test table (1) is fixed with two symmetrical collection chambers (7) on the side away from the operating device (3), the collection chambers (7) correspond to the collection covers (6), the bottom of the collection cover (6) is provided with a collection conveying mechanism (8), and the bottom of the collection cover (6) is provided with an auxiliary vibration mechanism (9).

2. The road material evaluation system according to claim 1, characterized in that: The collection and conveying mechanism (8) includes a support shaft (81) set inside the collection hood (6). The two ends of the support shaft (81) are rotatably connected to the inner wall of the collection hood (6). A collection plate (82) is fixed on the support shaft (81). The collection plate (82) is inclined. A corrugated plate (84) is provided at one end of the collection plate (82) away from the support shaft (81). One side of the corrugated plate (84) is fixedly connected to the collection plate (82), and the other side is fixedly connected to the test bench (1). A guide plate (83) is fixed at the bottom of the side of the collection plate (82) near the support shaft (81). A guide opening corresponding to the guide plate (83) is opened on the collection plate (82). The guide plate (83) corresponds to the collection chamber (7). A vibration component (85) is provided on the side of the collection plate (82) near the corrugated plate (84). A blocking component (86) is provided on the collection plate (82).

3. The road material evaluation system according to claim 2, characterized in that: The vibration assembly (85) includes a vibration head (851) rotatably connected to the inner wall of the collection shroud (6). The vibration head (851) is an elliptical cylinder. A vibration motor (852) is fixed on one side of the collection shroud (6). The output end of the vibration motor (852) is fixedly connected to the vibration head (851). A limiting spring (853) is provided at the bottom of the collection plate (82). Both ends of the limiting spring (853) are fixedly connected to the collection plate (82) and the test table (1).

4. The road material evaluation system according to claim 3, characterized in that: The blocking assembly (86) includes two fixed rods (863) symmetrically fixed to the inner wall of the collection hood (6), a plurality of support rods (861) fixed between the two fixed rods (863), and a support plate (862) fixed between the two fixed rods (863).

5. A road material evaluation system according to claim 2, characterized in that: The collecting plate (82) has several movable slots, and a corrugated rubber ring (87) is fixed in the movable slot. The corrugated rubber ring (87) corresponds to the output end of the hydraulic device and the limiting frame (10).

6. The road material evaluation system according to claim 4, characterized in that: The auxiliary vibration mechanism (9) includes two symmetrically fixed connecting rods (91) inside the collection cover (6). The two connecting rods (91) are located below the support rod (861). Several limiting rods (94) are fixed on the two connecting rods (91). A vibration plate (92) is provided on each of the two connecting rods (91). The limiting rod (94) passes through the vibration plate (92) and is slidably connected to the vibration plate (92). Several top plates (93) are fixed between the two vibration plates (92). The top plates (93) are located between adjacent support rods (861). A synchronization component (95) is provided between the several top plates (93) and the vibration head (851).

7. A road material evaluation system according to claim 6, characterized in that: The synchronization component (95) includes a support block (951) disposed inside the collection hood (6). The support block (951) is fixedly connected to the test bench (1). A rotating wheel (952) is rotatably connected to the support block (951). A transmission rod (957) is eccentrically rotatably connected to the rotating wheel (952). A reciprocating rod (954) is rotatably connected to one end of the transmission rod (957) away from the rotating wheel (952). The reciprocating rod (954) passes through the collection plate (82), and the collection plate (82) has an opening that connects to the reciprocating rod (954). 54) A corresponding movable groove is provided, and a corresponding corrugated rubber ring (956) is fixed thereon. A reciprocating plate (958) is fixed at one end of the reciprocating rod (954) away from the transmission rod (957). The reciprocating plate (958) is fixedly connected to a part of the top plate (93). A limit ring (953) is fixed on the support block (951). The reciprocating rod (954) passes through the limit ring (953) and is slidably connected with the limit ring (953). A transmission component (955) is provided between the rotating wheel (952) and the vibrating head (851).

8. A road material evaluation system according to claim 7, characterized in that: The transmission component (955) includes a rotating shaft (9551) fixed on a support block (951). The rotating shaft (9551) passes through the support block (951) and is fixedly connected to a rotating wheel (952). A first transmission wheel (9552) is fixed on the rotating shaft (9551), and a second transmission wheel (9553) is fixed on the vibrating head (851). A transmission belt (9554) is drivingly connected between the first transmission wheel (9552) and the second transmission wheel (9553).

9. An evaluation method for a road material evaluation system, applicable to any one of the road material evaluation systems described in claims 1-8, wherein the evaluation method is as follows: S1: Preparation and placement: Open the sealed door of the collection cover (6), place the road material specimen on the corresponding fixture of the flexural strength test station or the compressive strength test station, and then close the sealed door; S2: Closed test: Start the test procedure, the hydraulic device drives the anti-bending head (12) or the anti-compression head (11) to load the specimen until the specimen is destroyed and the broken waste is confined in the closed collection hood (6); S3: Automatic cleaning: After the test, the vibration generation mechanism at the bottom of the collection cover (6) is automatically started, driving the tiltable collection plate (82) to vibrate, so that the fine particles of waste on the plate move down the inclined surface. At the same time, the auxiliary vibration mechanism (9) moves synchronously to disturb the large pieces of waste stuck on the blocking component (86) and make them fall onto the collection plate (82). S4: Waste collection: All waste is transported through the collection plate (82) and finally falls into the corresponding waste collection chamber (7) through the guide port; S5: Cycle and evaluation: Open the sealed door, take out the remaining large specimen, the system records and processes the test data, and outputs the evaluation results of the flexural or compressive strength of the material through the display (2) to prepare for the next test.

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