Highway engineering asphalt ductility detection method

Abstract

The invention discloses a highway engineering asphalt ductility detection method, and relates to the field of asphalt ductility detection.The highway engineering asphalt ductility detection method comprises the following steps that firstly, a sampled asphalt block is cleaned, the asphalt block sampled from a highway pavement is put into a cleaning cavity in a box body, a pump body in an agent cavity sprays a desorption agent out of a spraying head, the asphalt block is soaked, and the asphalt block is cleaned; then a lifting plate of the cleaning assembly moves downwards, so that a first cleaning roller and a second cleaning roller move downwards to the outer side of the asphalt block and rotate for cleaning; 2, a fixed motor in the pushing and plugging assembly drives a threaded rod to rotate, so that a sealing plate drives a plugging plate to move through the fixed rod, and 3, heating and pouring are conducted, specifically, a heater in the cavity wall of a heating cavity works, impurities attached to the surface can be cleaned before sampled asphalt is heated and melted, the influence of the impurities on follow-up heating is avoided, and the service life of the asphalt is prolonged. The quality of the sample is ensured, and the accuracy of subsequent ductility detection is guaranteed.

Description

Technical Field

[0001] The invention mainly relates to the technical field of asphalt ductility detection, and specifically to a method for detecting the ductility of asphalt in highway engineering. Background Art

[0002] The ductility test of asphalt is a test method to evaluate the maximum elongation capacity of asphalt materials when they break under external forces. This ability is crucial for the use of infrastructure such as asphalt pavements because it is directly related to the durability, bearing capacity and crack resistance of the pavement. When conducting ductility test on the sampled asphalt, the block of asphalt needs to be heated and melted to make the ductility test easier.

[0003] A highway engineering asphalt ductility detection frame described in the prior art includes a base plate; a preparation component and a base component are provided on the base plate; the preparation component includes a preparation box with a discharge port and a driving member for flipping the preparation box, the preparation box is rotatably connected to the base plate and is connected to the driving member through a transmission mechanism; the base component includes a movable plate movably arranged on the base plate, and a detection mold is placed on the movable plate.

[0004] Although the above technology can heat and melt the asphalt and cast it using a mold, which makes the detection simple, impurities are attached to the sampled asphalt blocks, which may affect the heating effect, reduce the quality of the sample, and affect the accuracy of the detection structure. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a method for detecting the ductility of asphalt in highway engineering to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A method for detecting the ductility of asphalt in highway engineering includes the following steps: Step 1: Cleaning the sampled asphalt block. Put the sampled asphalt block from the road surface into the cleaning chamber in the box. The pump body in the reagent chamber sprays the desorbent from the spray head to soak the asphalt block. Then the lifting plate of the cleaning component moves down, so that the first cleaning roller and the second cleaning roller move down to the outside of the asphalt block and rotate to clean. Then, the electromagnetic valve of the liquid guide pipe on the reagent chamber is opened, and the desorbent flows back into the reagent chamber from the liquid guide pipe. Then, the pump body in the clean water chamber sprays clean water from the spray head to wash and soak the asphalt block. Finally, the electromagnetic valve of the liquid guide pipe on the clean water chamber is opened, and the clean water flows back into the clean water chamber from the liquid guide pipe. Step 2: Pushing: The fixed motor in the plugging assembly drives the threaded rod to rotate, so that the sealing plate drives the plugging plate to move through the fixed rod, and the plugging plate drives the push plate to move through the connecting rod, and the push plate pushes the asphalt block from the through hole into the heating chamber and falls onto the filter screen; Step three, heating and pouring. The heater in the wall of the heating chamber works to heat the asphalt blocks on the filter screen. During the heating process, the moisture on the surface evaporates until it melts. The melted asphalt solution falls onto the slope through the filter holes and is discharged from the pouring pipe and poured on the mold. Finally, a ductility tester is used to stretch it along the predetermined direction until it breaks to test the ductility.

[0007] The technical solution is specific, the interior of the box is provided with a cleaning chamber, the lower part of the cleaning chamber is provided with a medicine chamber and a clean water chamber, the medicine chamber and the clean water chamber are both fixed with pump bodies, the output ends of the two pump bodies are both connected with liquid supply pipes, the two liquid supply pipes pass through the box wall and are located at the top of the box, spray heads are provided on both sides of the top of the cleaning chamber, the two spray heads are connected with the liquid supply pipe, a cleaning assembly is provided in the cleaning chamber, the cleaning assembly is used to clean the asphalt block, a slide rail is fixed at the center line of the inner bottom of the cleaning chamber, a slider is slidably mounted on the slide rail, and a push plate is fixed on the slider; A heating chamber is provided inside the box body at one side of the cleaning chamber, and the side of the cleaning chamber away from the push plate is connected to the heating chamber through a through hole. A sealing component is provided in the through hole, and the sealing component is connected to the slider through a connecting rod. A filter screen is slidably installed at the bottom of the heating chamber, and a heater is installed in the chamber wall of the heating chamber. A groove is provided in the box body below the heating chamber, and the top of the groove is connected to the heating chamber through a casting pipe.

[0008] The technical solution is specific, the cleaning component includes a lifting plate, the top of the box body is located between the two liquid supply pipes and an electric telescopic cylinder is provided, the telescopic end of the electric telescopic cylinder is connected to the upper surface of the lifting plate, and the lower surface of the lifting plate is provided with three groups of cleaning rollers, each group of cleaning rollers consists of two protective shells, a first cleaning roller and two second cleaning rollers, both ends of the first cleaning roller are fixed with a rotating shaft, the two rotating shafts both penetrate the protective shell and are rotatably connected to the inner wall thereof, the two second cleaning rollers are vertically arranged, and the tops of the two second cleaning rollers are fixed with a transmission shaft, the two transmission shafts both penetrate the bottom end of the protective shell and are rotatably connected to the contact portion thereof.

[0009] Specifically, the technical solution of the present invention is that the first cleaning roller and the two second cleaning rollers are arranged in an N shape, a first bevel gear is fixedly mounted on one rotating shaft, a second bevel gear is meshingly connected to the lower side of the first bevel gear, the second bevel gear is fixedly mounted on the transmission shaft, a sprocket is fixedly mounted on the rotating shaft of the three groups of cleaning rollers on one side of the first bevel gear, the three sprockets are connected by a transmission chain, the transmission chains penetrate the outer wall of the protective shell and are slidably connected to the contact part thereof, a driving motor is fixedly mounted on the inner wall of one of the protective shells, and the output end of the driving motor is fixedly connected to a rotating shaft.

[0010] Specifically, the tops of the medicine chamber and the clean water chamber are connected with two groups of liquid guide tubes, the top of each group of the liquid guide tubes is installed with a solenoid valve, each group of the liquid guide tubes is composed of two tubes, and the two tubes are located on both sides of the slide rail, and a liquid level sensor is installed on the wall of the cleaning chamber.

[0011] Specifically, the outer walls of both sides of the slider are welded with ear plates, the end faces of the two ear plates are fixed with connecting rods, the sealing assembly includes a blocking plate arranged in the through hole, the ends of the two connecting rods are fixedly connected to the blocking plate, the bottom of the blocking plate is provided with a matching sliding groove at the slide rail, a fixing rod is welded at the center of one side of the blocking plate away from the cleaning chamber, and the end of the fixing rod is fixedly connected to a sealing plate.

[0012] The technical solution is specific that the sealing plate is located in the heating chamber, and a support spring is fixedly connected to the center of a side of the sealing plate away from the fixed rod, and the end of the support spring is fixedly connected to the cavity wall of the heating chamber, and a threaded rod is provided above the support spring, the threaded rod passes through the sealing plate, and the end of the threaded rod is rotatably connected to the cavity wall of the heating chamber.

[0013] Specifically, the interior of the box body is provided with a cavity on one side of the heating chamber, a fixed motor is bolted in the cavity, the output end of the fixed motor is fixedly connected to the threaded rod, the area of ​​the sealing plate is larger than the area of ​​the blocking plate, and the sealing plate is in close contact with the cavity wall of the heating chamber.

[0014] Specifically, the bottom wall of the heating chamber is located around the casting tube and is arranged as an inclined surface. Guide blocks are fixed to the inner walls on both sides of the heating chamber. Both sides of the filter are slidably installed on the guide blocks. One end of the filter passes through the wall of the box and extends to the outside to be connected with a fixed plate. Both ends of the fixed plate are fixedly connected to the wall of the box by bolts.

[0015] Specifically, the technical solution of the present invention is that a sealing door is installed on an outer wall of the box body close to the human body at the cleaning cavity, and a control panel is provided on one side of the sealing door.

[0016] In summary, the present invention mainly has the following beneficial effects: the present invention can clean the impurities attached to the surface of the sampled asphalt before heating and melting, thereby preventing the impurities from affecting the subsequent heating, ensuring the quality of the sample, and guaranteeing the accuracy of the subsequent ductility test; First, open the sealed door and place the asphalt block sampled from the highway into the cleaning chamber. Then the pump body in the reagent chamber works to send the desorbent into the cleaning chamber through the connected spray head to soak the asphalt block and decompose the organic matter. Then the electric telescopic cylinder in the cleaning assembly pushes the lifting plate downward so that the first cleaning roller contacts the upper surface of the asphalt block, and the second cleaning roller contacts the two side surfaces of the asphalt block. At this time, the first cleaning roller and the second cleaning roller rotate to clean the surface of the asphalt block. Then the solenoid valve is opened to allow the desorbent to return to the reagent chamber through the liquid guide tube. The pump body in the clean water chamber works to send clean water into the cleaning chamber through the connected spray head to rinse and soak the asphalt block to avoid residual desorbent affecting subsequent test results. Then the solenoid valve is opened to allow the clean water to return to the clean water chamber through the liquid guide tube. Then the fixed motor in the plugging assembly drives the threaded rod to rotate, so that the sealing plate drives the plugging plate to move through the fixed rod, and the plugging plate drives the push plate to move along the slide rail through the connecting rod. The moving push plate pushes the cleaned asphalt block through the through hole into the heating chamber and falls onto the filter net. Then the heater works to heat and melt the asphalt block. The melted asphalt solution is discharged from the casting pipe through the mesh of the filter net, poured into the mold, and finally placed in the elongation meter for elongation detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a diagram of the method steps of the present invention; Figure 2 It is a schematic diagram of a box of the present invention; Figure 3 It is a front cross-sectional structural diagram of the present invention; Figure 4 A schematic diagram of a cleaning component of the present invention; Figure 5 It is a top view and cross-sectional structure diagram of the protective shell of the present invention; Figure 6 It is a schematic diagram of the push plate connection of the present invention.

[0018] Description of the drawings: 1. Box body; 101. Cleaning chamber; 1011. Liquid level sensor; 102. Heating chamber; 1021. Inclined surface; 1022. Casting pipe; 103. Groove; 104. Agent chamber; 105. Clean water chamber; 106. Through hole; 107. Liquid guide tube; 1071. Solenoid valve; 2. Pump body; 201. Liquid supply pipe; 202. Spray head; 3. Cleaning assembly; 301. Lifting plate; 302. Electric telescopic cylinder; 303. Protective shell; 304. First cleaning roller; 305. Second cleaning roller; 306. Driving motor; 307. Rotating Drive shaft; 3071, sprocket; 3072, transmission chain; 308, first bevel gear; 309, second bevel gear; 310, transmission shaft; 4, slide rail; 401, slider; 4011, ear plate; 402, push plate; 403, connecting rod; 5, blocking assembly; 501, blocking plate; 5011, slide groove; 502, fixed rod; 503, sealing plate; 504, threaded rod; 505, cavity; 5051, fixed motor; 506, support spring; 6, guide block; 601, filter screen; 602, fixed plate; 7, sealing door; 8, control panel. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] The following describes an embodiment of the present invention based on its overall structure. Example

[0021] See also Figure 1-6 As shown, a method for detecting the ductility of asphalt in highway engineering includes the following steps: Step 1: Cleaning the sampled asphalt block. The asphalt block sampled from the road surface is placed in the cleaning chamber 101 in the box 1. The pump body 2 in the reagent chamber 104 sprays the desorbent from the spray head 202 to soak the asphalt block. Then the lifting plate 301 of the cleaning component 3 moves downward, so that the first cleaning roller 304 and the second cleaning roller 305 move downward to the outside of the asphalt block and rotate to clean. Then, the electromagnetic valve 1071 of the liquid guide tube 107 on the reagent chamber 104 is opened, and the desorbent flows back into the reagent chamber 104 from the liquid guide tube 107. Then, the pump body 2 in the clean water chamber 105 sprays clean water from the spray head 202 to rinse and soak the asphalt block. Finally, the electromagnetic valve 1071 of the liquid guide tube 107 on the clean water chamber 105 is opened, and clean water flows back into the clean water chamber 105 from the liquid guide tube 107. Step 2: Pushing: the fixed motor 5051 in the plugging assembly 5 drives the threaded rod 504 to rotate, so that the sealing plate 503 drives the plugging plate 501 to move through the fixed rod 502, and the plugging plate 501 drives the push plate 402 to move through the connecting rod 403, and the push plate 402 pushes the asphalt block to move from the through hole 106 into the heating chamber 102 and fall onto the filter screen 601; Step three, heating and pouring. The heater in the wall of the heating chamber 102 works to heat the asphalt blocks on the filter screen 601. During the heating process, the moisture on the surface evaporates until it melts. The melted asphalt solution falls onto the inclined surface 1021 through the filter holes and is discharged from the pouring pipe 1022 and poured onto the mold. Finally, a ductility meter is used to stretch it along a predetermined direction until it breaks to test the ductility.

[0022] The control panel 8 in the present application is used to control all electrical components. After detecting the liquid, the liquid level sensor 1011 can send a signal to the control panel 8 to start the cleaning component 3. Filter plates can be set in the reagent chamber 104 and the clean water chamber 105 to filter impurities from the re-entering desorbent and clean water, thereby increasing the number of reuses. In addition, a liquid inlet pipe and a liquid outlet pipe are provided to replace the internal liquid.

[0023] See also Figure 2 and Figure 3 As shown, a cleaning chamber 101 is provided inside the box body 1, and a sealing door 7 is installed at the cleaning chamber 101 on the outer wall of the box body 1 close to the human body. A control panel 8 is provided on one side of the sealing door 7. A medicine chamber 104 and a clean water chamber 105 are provided below the cleaning chamber 101. Pump bodies 2 are fixed in the medicine chamber 104 and the clean water chamber 105. The output ends of the two pump bodies 2 are connected to liquid supply pipes 201. The two liquid supply pipes 201 pass through the box wall and are located at the top of the box body 1. Spray heads 202 are provided on both sides of the top of the cleaning chamber 101. The two spray heads 202 are connected to the liquid supply pipes 201. The cleaning chamber 101 is connected to each other, and a cleaning component 3 is provided in the cleaning chamber 101. The cleaning component 3 is used to clean the asphalt block. A slide rail 4 is fixed at the center line of the inner bottom of the cleaning chamber 101. A slider 401 is slidably installed on the slide rail 4. A push plate 402 is fixed on the slider 401. The tops of the medicine chamber 104 and the clean water chamber 105 are both connected with two groups of liquid guide tubes 107. A solenoid valve 1071 is installed on the top of each group of liquid guide tubes 107. Each group of liquid guide tubes 107 consists of two tubes, and the two tubes are located on both sides of the slide rail 4. A liquid level sensor 1011 is installed on the cavity wall of the cleaning chamber 101; A heating chamber 102 is provided inside the box 1 at one side of the cleaning chamber 101. The side of the cleaning chamber 101 away from the push plate 402 is connected to the heating chamber 102 through a through hole 106. A blocking component 5 is provided in the through hole 106. The blocking component 5 is connected to the slider 401 through a connecting rod 403. A filter screen 601 is slidably installed at the bottom of the heating chamber 102. Guide blocks 6 are fixed to the inner walls of both sides of the heating chamber 102. Both sides of the filter screen 601 are slidably installed on the guide blocks 6. On the top, one end of the filter screen 601 passes through the wall of the box body 1 and extends to the outside to be connected with a fixed plate 602. The two ends of the fixed plate 602 are fixedly connected to the wall of the box body 1 by bolts. A heater is installed in the cavity wall of the heating cavity 102. The box body 1 is located below the heating cavity 102 and is provided with a groove 103. The groove top of the groove 103 is connected with the heating cavity 102 through a casting pipe 1022. The cavity bottom wall of the heating cavity 102 is located around the casting pipe 1022 and is set as an inclined surface 1021.

[0024] When testing the ductility of asphalt, the staff uses tools to take samples on the road, and the area of ​​the sampled asphalt block matches the size of the cleaning chamber 101. The sampled asphalt block is sent back to the laboratory, and then the sealed door 7 is opened to place the sampled asphalt block in the cleaning chamber 101. Then the staff starts the pump body 2 in the reagent chamber 104 through the control panel 8. The pump body 2 sends the desorbent into the liquid supply pipe 201 and sprays it from the connected spray head 202. The sprayed desorbent soaks the asphalt block and removes stubborn dirt or oily impurities by decomposing organic matter in the asphalt block. It should be noted that the concentration of the desorbent should not be too large, and the soaking and cleaning time should be noted. When the liquid level of the desorbent reaches the liquid level sensor 1011, the liquid level sensor 1011 A signal is sent to the control panel 8, and the control panel 8 starts the cleaning component 3, so that the cleaning part of the cleaning component 3 moves down and cleans the surface of the soaked asphalt block. After a period of time, the solenoid valve 1071 on the liquid guide tube 107 connected to the reagent chamber 104 is opened, so that the desorbent returns to the reagent chamber 104 through the liquid guide tube 107, and the pump body 2 in the clean water chamber 105 works to send clean water into the cleaning chamber 101 through the connected spray head 202 to rinse and soak the asphalt block, so as to avoid the residual desorbent from affecting the subsequent detection results. At this time, the cleaning component 3 still works to clean the asphalt block. After a period of time, the solenoid valve 1071 on the liquid guide tube 107 connected to the clean water chamber 105 is opened, so that the clean water returns to the clean water chamber 105 through the liquid guide tube 107; Then, the driving source of the blocking assembly 5 is started through the control panel 8, so that the blocking moves and drives the slider 401 to move along the slide rail 4 through the connecting rod 403, and the slider 401 drives the push plate 402 to move. The moving push plate 402 pushes the cleaned asphalt block and pushes it into the heating chamber 102 through the through hole 106. The asphalt block falls onto the filter screen 601, and then the heater works to heat and melt the asphalt block. The melted asphalt solution falls through the mesh of the filter screen 601 and is discharged from the casting pipe 1022 under the guidance of the inclined surface 1021. At this time, a mold is pushed into the groove 103, and the discharged asphalt solution will be poured into the mold, and finally put into the elongation meter for elongation detection. Therefore, the present application can clean the impurities attached to the surface of the sampled asphalt before heating and melting, so as to avoid the influence of impurities on subsequent heating, ensure the quality of the sample, and ensure the accuracy of subsequent elongation detection.

[0025] See also Figure 3-5 As shown, the cleaning assembly 3 includes a lifting plate 301, and the top of the box body 1 is located between the two liquid supply pipes 201 and is provided with an electric telescopic cylinder 302, the telescopic end of the electric telescopic cylinder 302 is connected to the upper surface of the lifting plate 301, and the lower surface of the lifting plate 301 is provided with three groups of cleaning rollers, each group of cleaning rollers is composed of two protective shells 303, a first cleaning roller 304 and two second cleaning rollers 305, both ends of the first cleaning roller 304 are fixed with a rotating shaft 307, the two rotating shafts 307 both penetrate the protective shell 303 and are rotatably connected to the inner wall thereof, the two second cleaning rollers 305 are both vertically arranged, and the tops of the two second cleaning rollers 305 are fixed with a transmission shaft 310, the two transmission shafts 310 both penetrate the bottom end of the protective shell 303 and are connected to it The first cleaning roller 304 and the two second cleaning rollers 305 are arranged in an n-shaped manner, a first bevel gear 308 is fixedly mounted on a rotating shaft 307, a second bevel gear 309 is meshedly connected below the first bevel gear 308, and the second bevel gear 309 is fixedly mounted on a transmission shaft 310. A sprocket 3071 is fixedly mounted on the rotating shaft 307 of the three groups of cleaning rollers on one side of the first bevel gear 308, and the three sprockets 3071 are connected by a transmission chain 3072, and the transmission chain 3072 passes through the outer wall of the protective shell 303 and is slidably connected with the contact part thereof, a driving motor 306 is fixedly mounted on the inner wall of a protective shell 303, and the output end of the driving motor 306 is fixedly connected to a rotating shaft 307. A cleaning brush is arranged on the surface of the cleaning roller.

[0026] The electric telescopic cylinder 302 works, and its telescopic end pushes the lifting plate 301 to move downward. The downward lifting plate 301 drives the first cleaning roller 304 and the second cleaning roller 305 to move downward through the protective shell 303, so that the first cleaning roller 304 contacts the upper surface of the asphalt block, and the second cleaning roller 305 contacts the two side surfaces of the asphalt block. Then the driving motor 306 works, and the output end of the driving motor 306 drives the connected rotating shaft 307 to rotate. The rotating shaft 307 drives the installed sprocket 3071 and the first bevel gear 308 to rotate. The sprocket 3071 drives the other two sprockets 3071 to rotate through the transmission chain 3072. The other two sprockets 3071 drive the penetrating rotating shaft 307 to rotate. The three rotating shafts 307 rotate at the same time and drive the meshed second bevel gear 309 to rotate through the installed first bevel gear 308, so that the first cleaning roller 304 and the second cleaning roller 305 rotate, and the rotating first cleaning roller 304 and the second cleaning roller 305 clean the surface of the asphalt block to remove the decomposed impurities.

[0027] See also Figure 3 and Figure 6 As shown, ear plates 4011 are welded to the outer walls of both sides of the slider 401, and the end faces of the two ear plates 4011 are fixed with connecting rods 403. The blocking assembly 5 includes a blocking plate 501 arranged in the through hole 106, and the ends of the two connecting rods 403 are fixedly connected to the blocking plate 501. The bottom of the blocking plate 501 is located at the slide rail 4 and a matching slide groove 5011 is opened. A fixing rod 502 is welded at the center of one side of the blocking plate 501 away from the cleaning chamber 101, and a sealing plate 503 is fixedly connected to the end of the fixing rod 502. The sealing plate 503 is located in the heating chamber 102, and the sealing plate 503 is at the center of one side of the sealing plate 503 away from the fixing rod 502. A support spring 506 is fixedly connected, and the end of the support spring 506 is fixedly connected to the cavity wall of the heating cavity 102. A threaded rod 504 is provided above the support spring 506, and the threaded rod 504 penetrates the sealing plate 503. The end of the threaded rod 504 is rotatably connected to the cavity wall of the heating cavity 102. A cavity 505 is provided on one side of the heating cavity 102 inside the box body 1, and a fixed motor 5051 is bolted in the cavity 505. The output end of the fixed motor 5051 is fixedly connected to the threaded rod 504. The area of ​​the sealing plate 503 is larger than the area of ​​the blocking plate 501, and the sealing plate 503 is in close contact with the cavity wall of the heating cavity 102.

[0028] The fixed motor 5051 works and its output end drives the threaded rod 504 to rotate, so that the sealing plate 503 follows the rotation of the threaded rod 504 and drives the blocking plate 501 to move through the fixed rod 502. The moving sealing plate 503 squeezes the supporting spring 506, and the blocking plate 501 moves along the through hole 106 and drives the ear plate 4011 to move through the connecting rod 403. The ear plate 4011 drives the push plate 402 to move along the slide rail 4 through the slider 401, thereby pushing the asphalt block.

[0029] The working principle of the present invention is: When testing the ductility of asphalt, the staff uses tools to take samples on the road, and the area of ​​the sampled asphalt block matches the size of the cleaning chamber 101. The sampled asphalt block is sent back to the laboratory, and then the sealed door 7 is opened to place the sampled asphalt block in the cleaning chamber 101. Then the staff starts the pump body 2 in the reagent chamber 104 through the control panel 8. The pump body 2 sends the desorbent into the liquid supply pipe 201 and sprays it from the connected spray head 202. The sprayed desorbent soaks the asphalt block and removes stubborn dirt or oily impurities by decomposing organic matter in the asphalt block. It should be noted that the concentration of the desorbent should not be too large, and the soaking cleaning time should be noted. When the liquid level of the desorbent reaches the liquid level sensor 1011, the liquid level sensor 1011 sends a signal to the control panel 8, and the cleaning component 3 is started by the control panel 8. The electric telescopic cylinder 302 works and its telescopic end pushes the lifting plate 301 downward. The descending plate 301 drives the first cleaning roller 304 and the second cleaning roller 305 to move downward through the protective shell 303, so that the first cleaning roller 304 contacts the upper surface of the asphalt block, and the second cleaning roller 305 contacts the two side surfaces of the asphalt block, and then the driving motor 306 therein works, and the output end of the driving motor 306 drives the connected rotating shaft 307 to rotate, and the rotating shaft 307 drives the installed sprocket 3071 and the first bevel gear 308 to rotate, and the sprocket 3071 drives the other two sprockets 3071 to rotate through the transmission chain 3072, and the other two sprockets 3071 drive the rotating shaft 307 to rotate, and the three rotating shafts 307 rotate at the same time and drive the meshed second bevel gear 309 to rotate through the installed first bevel gear 308, so that the first cleaning roller 304 and the second cleaning roller 305 rotate, and the rotating first cleaning roller 304 and the second cleaning roller 305 clean the surface of the asphalt block to remove the decomposed impurities; After a period of time, the solenoid valve 1071 on the liquid guide tube 107 connected to the reagent chamber 104 is opened, so that the desorbent returns to the reagent chamber 104 through the liquid guide tube 107, and the pump body 2 in the clean water chamber 105 works to send clean water into the cleaning chamber 101 through the connected spray head 202 to rinse and soak the asphalt block to prevent the residual desorbent from affecting the subsequent test results. At this time, the cleaning component 3 still works to clean the asphalt block. After a period of time, the solenoid valve 1071 on the liquid guide tube 107 connected to the clean water chamber 105 is opened, so that the clean water returns to the clean water chamber 105 through the liquid guide tube 107; Then, the fixed motor 5051 of the plugging assembly 5 is started through the control panel 8, and its output end drives the threaded rod 504 to rotate, so that the sealing plate 503 follows the rotation of the threaded rod 504 and drives the plugging plate 501 to move through the fixed rod 502, and the moving sealing plate 503 squeezes the supporting spring 506, and the plugging plate 501 moves along the through hole 106 and drives the ear plate 4011 to move through the connecting rod 403, and the ear plate 4011 drives the push plate 402 to move along the slide rail 4 through the slider 401, and the moving push plate 402 pushes the cleaned asphalt block and pushes it into the heating chamber 102 through the through hole 106, and the asphalt block falls onto the filter screen 601, and then the heater works to heat and melt the asphalt block, and the melted asphalt solution falls through the mesh of the filter screen 601 and is discharged from the casting pipe 1022 under the guidance of the inclined surface 1021, and at this time, a mold is pushed into the groove 103, and the discharged asphalt solution will be poured into the mold, and finally put into the elongation meter for elongation detection.

[0030] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A method for detecting the ductility of asphalt in highway engineering, characterized in that , including the following steps: Step 1: Cleaning the sampled asphalt block. The asphalt block sampled from the road surface is placed in the cleaning chamber (101) in the box (1). The pump body (2) in the reagent chamber (104) sprays the desorbent from the spray head (202) to soak the asphalt block. Then, the lifting plate (301) of the cleaning component (3) moves downward, so that the first cleaning roller (304) and the second cleaning roller (305) move downward to the outside of the asphalt block and rotate to clean it. Next, the solenoid valve (1071) of the liquid guide tube (107) on the reagent chamber (104) is opened, and the desorbent flows back into the reagent chamber (104) from the liquid guide tube (107); then, the pump body (2) in the clean water chamber (105) sprays clean water from the spray head (202) to rinse and soak the asphalt block; finally, the solenoid valve (1071) of the liquid guide tube (107) on the clean water chamber (105) is opened, and clean water flows back into the clean water chamber (105) from the liquid guide tube (107); Step 2: Pushing: the fixed motor (5051) in the plugging assembly (5) drives the threaded rod (504) to rotate, so that the sealing plate (503) drives the plugging plate (501) to move via the fixed rod (502), and the plugging plate (501) drives the push plate (402) to move via the connecting rod (403), and the push plate (402) pushes the asphalt block to move from the through hole (106) into the heating chamber (102) and fall onto the filter screen (601); Step 3, heating and pouring. The heater in the wall of the heating chamber (102) is operated to heat the asphalt block on the filter screen (601). During the heating process, the moisture on the surface evaporates until it melts. The melted asphalt solution falls onto the inclined surface (1021) through the filter holes and is discharged from the pouring pipe (1022) and poured onto the mold. Finally, a ductility tester is used to stretch it along a predetermined direction until it breaks, and the ductility is tested.

2. A method for detecting the ductility of asphalt in highway engineering according to claim 1, characterized in that: A cleaning chamber (101) is provided inside the box body (1), a medicine chamber (104) and a clean water chamber (105) are provided below the cleaning chamber (101), a pump body (2) is fixed in each of the medicine chamber (104) and the clean water chamber (105), the output ends of the two pump bodies (2) are connected to a liquid supply pipe (201), the two liquid supply pipes (201) pass through the box wall and are located at the top of the box body (1), spray heads (202) are provided on both sides of the top of the cleaning chamber (101), the two spray heads (202) are connected to the liquid supply pipe (201), a cleaning component (3) is provided in the cleaning chamber (101), the cleaning component (3) is used to clean the asphalt block, a slide rail (4) is fixed at the center line of the inner bottom of the cleaning chamber (101), a slider (401) is slidably mounted on the slide rail (4), and a push plate (402) is fixed on the slider (401); A heating chamber (102) is provided on one side of the cleaning chamber (101) inside the box body (1); a side of the cleaning chamber (101) away from the push plate (402) is connected to the heating chamber (102) via a through hole (106); a blocking component (5) is provided in the through hole (106); the blocking component (5) is connected to the slider (401) via a connecting rod (403); a filter screen (601) is slidably mounted on the bottom of the heating chamber (102); a heater is mounted in the chamber wall of the heating chamber (102); a groove (103) is provided on the box body (1) below the heating chamber (102); the groove top of the groove (103) is connected to the heating chamber (102) via a casting pipe (1022).

3. A highway engineering asphalt ductility detection method according to claim 2, characterized in that: The cleaning assembly (3) comprises a lifting plate (301); an electric telescopic cylinder (302) is provided at the top of the box body (1) between the two liquid supply pipes (201); the telescopic end of the electric telescopic cylinder (302) is connected to the upper surface of the lifting plate (301); three groups of cleaning rollers are provided on the lower surface of the lifting plate (301); each group of cleaning rollers comprises two protective shells (303), a first cleaning roller (304) and two second cleaning rollers (305); a rotating shaft (307) is fixed at both ends of the first cleaning roller (304); the two rotating shafts (307) penetrate the protective shell (303) and are rotatably connected to the inner wall thereof; the two second cleaning rollers (305) are arranged vertically; a transmission shaft (310) is fixed at the top of the two second cleaning rollers (305); the two transmission shafts (310) penetrate the bottom end of the protective shell (303) and are rotatably connected to the contact portion thereof.

4. A highway engineering asphalt ductility detection method according to claim 3, characterized in that: The first cleaning roller (304) and the two second cleaning rollers (305) are arranged in an n-shape; a first bevel gear (308) is fixedly mounted on one of the rotating shafts (307); a second bevel gear (309) is meshingly connected to the lower side of the first bevel gear (308); the second bevel gear (309) is fixedly mounted on a transmission shaft (310); a sprocket (3071) is fixedly mounted on one side of the first bevel gear (308) on the rotating shafts (307) of the three groups of cleaning rollers; the three sprockets (3071) are connected to each other via a transmission chain (3072); the transmission chains (3072) penetrate the outer wall of the protective shell (303) and are slidably connected to the contact portion thereof; a driving motor (306) is fixedly mounted on the inner wall of one of the protective shells (303); an output end of the driving motor (306) is fixedly connected to a rotating shaft (307).

5. A highway engineering asphalt ductility detection method according to claim 2, characterized in that: The tops of the medicine chamber (104) and the clean water chamber (105) are both connected to two groups of liquid guide tubes (107), and a solenoid valve (1071) is installed on the top of each group of the liquid guide tubes (107). Each group of the liquid guide tubes (107) is composed of two tubes, and the two tubes are located on both sides of the slide rail (4). A liquid level sensor (1011) is installed on the cavity wall of the cleaning chamber (101).

6. A highway engineering asphalt ductility detection method according to claim 2, characterized in that: Ear plates (4011) are welded to the outer walls of both sides of the slider (401), and connecting rods (403) are fixed to the end faces of the two ear plates (4011). The blocking assembly (5) includes a blocking plate (501) arranged in the through hole (106), and the ends of the two connecting rods (403) are fixedly connected to the blocking plate (501). A matching slide groove (5011) is provided at the bottom of the blocking plate (501) at the slide rail (4). A fixing rod (502) is welded at the center of one side of the blocking plate (501) away from the cleaning chamber (101), and a sealing plate (503) is fixedly connected to the end of the fixing rod (502).

7. A method for detecting ductility of asphalt in highway engineering according to claim 6, characterized in that: The sealing plate (503) is located in the heating chamber (102); a support spring (506) is fixedly connected to the center of a surface of the sealing plate (503) away from the fixed rod (502); an end of the support spring (506) is fixedly connected to the cavity wall of the heating chamber (102); a threaded rod (504) is provided above the support spring (506); the threaded rod (504) passes through the sealing plate (503); and an end of the threaded rod (504) is rotatably connected to the cavity wall of the heating chamber (102).

8. A method for detecting ductility of asphalt in highway engineering according to claim 7, characterized in that: A cavity (505) is provided inside the box body (1) at one side of the heating chamber (102); a fixed motor (5051) is bolted into the cavity (505); an output end of the fixed motor (5051) is fixedly connected to a threaded rod (504); an area of ​​the sealing plate (503) is larger than an area of ​​the blocking plate (501); and the sealing plate (503) is in close contact with a cavity wall of the heating chamber (102).

9. A highway engineering asphalt ductility detection method according to claim 2, characterized in that: The bottom wall of the heating chamber (102) is located around the pouring pipe (1022) and is arranged as an inclined surface (1021). Guide blocks (6) are fixed to the inner walls on both sides of the heating chamber (102). Both sides of the filter screen (601) are slidably mounted on the guide blocks (6). One end of the filter screen (601) passes through the wall of the box body (1) and extends to the outside to be connected to a fixing plate (602). Both ends of the fixing plate (602) are fixedly connected to the wall of the box body (1) by bolts.

10. A highway engineering asphalt ductility detection method according to claim 2, characterized in that: A sealing door (7) is installed on an outer wall of the box body (1) close to the human body at the cleaning chamber (101), and a control panel (8) is provided on one side of the sealing door (7).

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