An intelligent ductility detection device for modified asphalt

Abstract

The present invention relates to the technical field of asphalt ductility detection, and specifically relates to an intelligent ductility detection device for modified asphalt, which includes a water tank. Inside the water tank, there is a water trough. In the water trough, there are a fixed plate and a moving plate. The fixed plate is fixedly arranged in the water trough and a first template is provided on the fixed plate. The moving plate is slidably arranged in the water trough and a second template is provided on the moving plate. An asphalt sample is placed on the first template and the second template. There are also a plurality of protection and monitoring boxes in the water trough. The protection and monitoring box includes a box body and a protection cover. In the initial state, the protection cover is located inside the box body. As the asphalt sample is gradually stretched, the protection and monitoring boxes corresponding to the lower part of the asphalt sample can rise in sequence. At the same time, the protection cover of the protection and monitoring box can rotate above the box body to enclose the stretched part of the asphalt sample inside the protection and monitoring box, avoiding the influence of the water flow in the water trough on the asphalt sample and improving the accuracy of asphalt ductility detection.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt ductility detection, and particularly to an intelligent ductility detection device for modified asphalt. Background Art

[0002] Asphalt ductility refers to the length of asphalt material when it is stretched to break under specific conditions. It is an important index to measure the flexibility and deformation ability of asphalt, and is crucial for evaluating the anti-cracking performance of asphalt under low temperature or load. Asphalt ductility detection is usually carried out using an asphalt ductility detection device.

[0003] However, the existing asphalt ductility detection devices will generate water flow during the detection process. The disturbance of the water flow is likely to cause the breakage of the asphalt filaments, resulting in inaccurate asphalt detection data. Summary of the Invention

[0004] Based on this, in view of the technical problem that the current asphalt ductility detection devices have inaccurate detection, it is necessary to provide an intelligent ductility detection device for modified asphalt.

[0005] The above object is achieved by the following technical solutions:

[0006] An intelligent ductility detection device for modified asphalt includes a water tank. There is a water trough inside the water tank. In the water trough, there are a fixed plate and a moving plate at the same horizontal plane. The fixed plate is fixedly arranged in the water trough and a first template is provided on the fixed plate. The moving plate is slidably arranged in the water trough and a second template is provided on the moving plate. An asphalt sample is placed on the first template and the second template. The moving plate can slide horizontally relative to the fixed plate to drive the second template to move relative to the first template, so as to realize the stretching of the asphalt sample. There are also a plurality of protection and monitoring boxes in the water trough. The plurality of protection and monitoring boxes are arranged in sequence along the stretching direction of the asphalt sample, and the protection and monitoring boxes are arranged directly below the asphalt sample. The protection and monitoring box includes a box body and a protection cover. In the initial state, the protection cover is located inside the box body. As the asphalt sample is gradually stretched, the protection and monitoring box corresponding to the lower part of the asphalt sample can rise in sequence, and at the same time, the protection cover of the protection and monitoring box can rotate above the box body, so as to enclose a part of the stretched asphalt sample inside the protection and monitoring box.

[0007] Further, there is a lifting mechanism between the bottom of the box body and the bottom of the water trough. The lifting mechanism is used to control the lifting of the protection and monitoring box.

[0008] Further, the protection cover is semi-circular, the axis direction of the protection cover is consistent with the stretching direction of the asphalt sample, a rotating ring is coaxially arranged on the outer periphery of the protection cover, a ring groove is provided inside the box body, the rotating ring is rotatably arranged in the ring groove, and a power wheel is provided on the box body. The power wheel is in transmission cooperation with the rotating ring to realize the rotation of the protection cover relative to the box body.

[0009] Further, first through holes are provided at both ends of the box body along the stretching direction of the asphalt sample. The first through holes are semi-circular holes, the axes of the first through holes coincide with the axis of the protective cover, and a plurality of Tesla valves are provided on the inner wall of the first through holes in the circumferential direction. The resistance of the Tesla valves to the water flowing into the box body is greater than the resistance of the water flowing out of the box body.

[0010] Further, baffles are provided at both ends of the protective cover along its axial direction. Second through holes are provided on the baffles. The second through holes are semi-circular holes, the axes of the second through holes coincide with the axis of the protective cover, and a plurality of Tesla valves are provided on the inner wall of the second through holes in the circumferential direction. The second through holes are butted with the first through holes to form a circular hole through which the stretched asphalt sample passes.

[0011] Further, a telescopic plate that slides along the axial direction of the protective cover is provided on the baffle, and the telescopic plates on two adjacent protection monitoring boxes can be in contact.

[0012] Further, a monitoring window is provided on the protective cover, and a convex lens is provided on the monitoring window. The convex lens is used to observe the fracture condition of the asphalt sample.

[0013] Further, a slide rail extending in the horizontal direction is provided in the water tank, the moving plate is slidably arranged on the slide rail, and a lead screw is further provided in the water tank. The moving plate is threadedly connected with the lead screw, and the moving plate slides along the slide rail by rotating the lead screw.

[0014] Further, a scale line extending along the stretching direction of the asphalt sample is further provided on the water tank, an indicating needle is provided at one end of the moving plate, and the indicating needle and the scale line are used to reflect the stretching length of the asphalt sample.

[0015] Further, the lifting mechanism is an electric telescopic rod, and two electric telescopic rods are provided along the stretching direction of the asphalt sample.

[0016] The beneficial effects of the present invention are as follows:

[0017] When the intelligent ductility detection device for modified asphalt provided by the present invention is performing detection, as the asphalt sample is gradually stretched, the corresponding protection monitoring boxes below the asphalt sample can rise in sequence, so as to facilitate the asphalt sample to enter the protection detection box. At the same time, the protective covers of the protection monitoring boxes can rotate to the upper part of the box body in sequence, so that the protective cover closes the opening of the box body. This way of rotating and buckling the protective cover on the box body generates less disturbing force on the water in the water tank, and at the same time, the protection monitoring box can prevent the asphalt sample from being affected by the water flow in the water tank, improving the accuracy of asphalt ductility detection.

[0018] Second, Tesla valves are provided at both ends of the box body and the protective cover, such that the resistance of water flowing into the interior of the box body is greater than the resistance of water flowing out of the interior of the box body, ensuring the stability of the water flow inside the box body, thereby maximizing the avoidance of interference of the water in the water tank with the asphalt sample inside the box body, and further improving the accuracy of asphalt ductility detection.

[0019] Third, since the diameter of the asphalt sample is very small after being stretched to a relatively long length, a monitoring window is provided on the protective cover, and a convex lens is provided on the monitoring window, so that the fracture condition of the asphalt sample can be easily observed, and the stretching of the asphalt sample can be stopped in time, ensuring the accuracy of the asphalt ductility detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic perspective view of an intelligent ductility detection device for modified asphalt provided by an embodiment of the present invention;

[0021] Figure 2 is Figure 1 an enlarged view of the structure at A in

[0022] Figure 3 is an exploded view of the structure of an intelligent ductility detection device for modified asphalt provided by an embodiment of the present invention;

[0023] Figure 4 is Figure 3 an enlarged view of the structure at B in

[0024] Figure 5 is a top view of an intelligent ductility detection device for modified asphalt provided by an embodiment of the present invention;

[0025] Figure 6 is Figure 5 an enlarged view of the structure at C in

[0026] Figure 7 is Figure 5 a cross-sectional view taken along X-X in

[0027] Figure 8 is a schematic view of the structure of a circular hole in an intelligent ductility detection device for modified asphalt provided by an embodiment of the present invention.

[0028] Wherein:

[0029] 100. Water tank; 110. Water trough; 111. Control panel; 112. Glass cover plate; 113. Scale line; 114. Fixed plate; 116. Movable plate; 118. Lead screw; 119. Pointer; 120. First template; 121. Second template; 122. Asphalt sample; 130. Protective cover; 131. Baffle; 132. Rotating ring; 133. Second through hole; 134. Telescopic plate; 135. Convex lens; 140. Box body; 141. Lifting mechanism; 142. First through hole; 143. Ring groove; 144. Driving wheel; 145. Tesla valve; 1451. Flow blocking plate; 1452. Bending channel. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise clearly specified and defined, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0032] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] As Figures 1 to 8As shown in the figure, an intelligent ductility detection device for modified asphalt provided by an embodiment of the present invention includes a water tank 100. A water trough 110 is arranged inside the water tank 100. A fixed plate 114 and a moving plate 116 are arranged in the water trough 110 at the same horizontal plane. The fixed plate 114 is fixedly arranged in the water trough 110 and a first template 120 is arranged on the fixed plate 114. The moving plate 116 is slidably arranged in the water trough 110 and a second template 121 is arranged on the moving plate 116. An asphalt sample 122 is placed on the first template 120 and the second template 121. The moving plate 116 can slide horizontally relative to the fixed plate 114 to drive the second template 121 to move relative to the first template 120, so as to realize the stretching of the asphalt sample 122. A plurality of protection monitoring boxes are further arranged in the water trough 110. The plurality of protection monitoring boxes are arranged in sequence along the stretching direction of the asphalt sample 122, and the protection monitoring boxes are arranged directly below the asphalt sample 122. The protection monitoring box includes a box body 140 and a protection cover 130. In the initial state, the protection cover 130 is located inside the box body 140. As the asphalt sample 122 is gradually stretched, the protection monitoring boxes corresponding to the lower part of the asphalt sample 122 can rise in sequence. At the same time, the protection cover 130 of the protection monitoring box can rotate above the box body 140, so as to enclose a part of the stretched asphalt sample 122 inside the protection monitoring box.

[0034] Among them, the first template 120 is detachably fixed on the fixed plate 114 by bolts, and the second template 121 is detachably fixed on the moving plate 116 by bolts, which is convenient for installation. The first template 120 and the second template 121 have the same structure and both have a U-shaped receiving groove for placing the asphalt sample 122.

[0035] In this embodiment, three asphalt samples 122 can be measured simultaneously. A protection detection box is arranged directly below each asphalt sample 122, so that when one of the asphalt samples 122 breaks, it will not affect the breakage of other asphalt samples 122 and avoid mutual influence.

[0036] In this way, during the detection, as the asphalt sample 122 is gradually stretched, the protection monitoring boxes corresponding to the lower part of the asphalt sample 122 can rise in sequence, so as to facilitate the asphalt sample 122 to enter the protection detection box. At the same time, the protection covers 130 of the protection monitoring boxes can rotate above the box body 140 in sequence, so that the protection cover 130 closes the opening of the box body 140. This way of rotating and buckling the protection cover 130 on the box body 140 generates little disturbing force on the water in the water trough 110. At the same time, the protection monitoring box can prevent the asphalt sample 122 from being affected by the water flow in the water trough 110 and improve the accuracy of asphalt ductility detection.

[0037] Further, a lifting mechanism 141 is provided between the bottom of the box body 140 and the bottom of the water tank 110, and the lifting mechanism 141 is used to control the lifting of the protection and monitoring box. In this embodiment, the lifting mechanism 141 is an electric telescopic rod, and two electric telescopic rods are provided along the stretching direction of the asphalt sample 122. In other embodiments, the lifting mechanism 141 may be a hydraulic telescopic rod.

[0038] Further, the protection cover 130 is semicircular, the axis direction of the protection cover 130 is the same as the stretching direction of the asphalt sample 122, a rotating ring 132 is coaxially provided on the outer periphery of the protection cover 130, a ring groove 143 is provided inside the box body 140, and the rotating ring 132 is rotatably arranged in the ring groove 143. A driving wheel 144 is provided on the box body 140, and the driving wheel 144 is in transmission cooperation with the rotating ring 132 to realize the rotation of the protection cover 130 relative to the box body 140. In order to prevent the driving wheel 144 from disturbing the water in the water tank 100, a shock-absorbing shell can be sleeved outside the driving wheel 144, or the driving wheel 144 can be arranged in the sandwich layer of the box body 140.

[0039] Further, first through holes 142 are provided at both ends of the box body 140 along the stretching direction of the asphalt sample 122. The first through holes 142 are semicircular holes, the axes of the first through holes 142 coincide with the axis of the protection cover 130, and a plurality of Tesla valves 145 are provided on the inner wall of the first through holes 142 in the circumferential direction. The Tesla valves 145 make the resistance of water flowing into the box body 140 greater than the resistance of water flowing out of the box body 140.

[0040] The Tesla valve 145 is a non-moving part one-way valve. Specifically, as Figure 8 described, the Tesla valve 145 in this embodiment includes a plurality of bending channels 1452 distributed along the stretching direction of the asphalt sample 122, and flow blocking plates 1451 are provided in each bending channel 1452. It is set that the water flowing from the water tank 110 into the box body 140 is the forward flow, and the water flowing out of the box body 140 is the reverse flow. When the water flows forward into the space between the bending channel 1452 and the flow blocking plate 1451, the water will flow reversely under the guidance of the bending channel 1452, thus hindering the forward flow of the water; while when the water flows out of the box body 140, the bending channel 1452 and the flow blocking plate 1451 hardly hinder the reverse flow of the water, so that the resistance of water flowing into the box body 140 is greater than the resistance of water flowing out of the box body 140.

[0041] Furthermore, baffles 131 are provided at both ends of the protective cover 130 along its axial direction. A second through-hole 133 is provided on the baffle 131. The second through-hole 133 is a semi-circular hole, and the axis of the second through-hole 133 coincides with the axis of the protective cover 130. A plurality of Tesla valves 145 are provided on the inner wall of the second through-hole 133 in the circumferential direction. The second through-hole 133 is docked with the first through-hole 142 to form a circular hole, and the circular hole is for the stretched asphalt sample 122 to pass through. In this way, when the protective cover 130 rotates above the box body 140, the second through-hole 133 on the baffle 131 is docked with the first through-hole 142 on the box body 140 to form a circular hole. The interior of the box body 140 is only communicated with the water tank 110 through the circular hole, and Tesla valves 145 are provided in the circular hole to ensure the water flow stability inside the box body 140, thereby minimizing the interference of the water in the water tank 110 on the asphalt sample 122 inside the box body 140.

[0042] Furthermore, a telescopic plate 134 that slides along the axial direction of the protective cover 130 is provided on the baffle 131. The telescopic plates 134 on two adjacent protection monitoring boxes can come into contact. Since the protective cover 130 can be accommodated inside the box body 140, in the axial direction of the protective cover 130, the size of the protective cover 130 is smaller than that of the box body 140. Therefore, there is a gap between the protective covers 130 of two adjacent protection monitoring boxes. By providing the telescopic plate 134, this gap can be blocked, thereby preventing the water in the water tank 110 from flowing into the circular hole and further avoiding interfering with the asphalt sample 122 inside the box body 140.

[0043] Specifically, a telescopic groove extending along the axial direction of the protective cover 130 is provided on the baffle 131. The telescopic plate 134 is located in the telescopic groove, and a spring (not shown in the figure) is provided between the telescopic plate 134 and the telescopic groove. The spring has a tendency to make the telescopic plate 134 extend out of the telescopic groove. In this way, when the protective cover 130 rotates above the box body 140, the telescopic plate 134 can automatically extend under the action of the spring. In other embodiments, the telescopic plate 134 can be designed as a magnetic plate, and the magnetic poles of two adjacent telescopic plates 134 in butt joint are opposite, so that the two adjacent telescopic plates 134 attract each other to realize the extension of the telescopic plate 134. For the convenience of the reset of the telescopic plate 134, the telescopic plate 134 is U-shaped in the axial direction of the protective cover 130, so that the telescopic plate 134 can retract into the telescopic groove under the push of the side wall of the box body 140.

[0044] Furthermore, a monitoring window is provided on the protective cover 130, and a convex lens 135 is provided on the monitoring window. Since the diameter of the asphalt sample 122 is very small after being stretched to a longer length, it is easy to observe the fracture condition of the asphalt sample 122, stop the stretching of the asphalt sample 122 in time, and ensure the accuracy of the ductility detection data of the asphalt sample 122.

[0045] Further, a slide rail extending in the horizontal direction is provided in the water tank 110, the moving plate 116 is slidably arranged on the slide rail, a lead screw 118 is further provided in the water tank 110, the moving plate 116 is threadedly connected to the lead screw 118, and by rotating the lead screw 118, the moving plate 116 slides horizontally along the slide rail. This structure is simple and convenient for processing.

[0046] Further, a scale line 113 extending along the stretching direction of the asphalt sample 122 is provided on the water tank 100. One end of the moving plate 116 is provided with a fixed block, and an indicating needle 119 is provided on the fixed block. The indicating needle 119 and the scale line 113 are used to reflect the stretching length of the asphalt sample 122. In this way, the stretching length of the asphalt sample 122 can be directly read out, improving the detection efficiency of asphalt ductility.

[0047] A control panel 111 and a glass cover plate 112 are further provided on the water tank 100. The glass cover plate 112 can cover the water tank 110 to prevent the external environment from affecting the asphalt ductility detection process. The control panel 111 can control the rotation of the lifting mechanism 141, the driving wheel 144, and the lead screw 118, which is convenient for operation.

[0048] Combined with the above embodiments, the working principle and process of the embodiments of the present invention are as follows:

[0049] In the initial state, the moving plate 116 approaches the fixed plate 114, causing the first template 120 to be docked with the second template 121. Then, the asphalt sample 122 is first placed on the first template 120 and the second template 121, and then the glass cover plate 112 is covered. By rotating the lead screw 118 through the control panel 111, the lead screw 118 drives the moving plate 116 away from the fixed plate 114, so that the second template 121 moves away from the first template 120 to stretch the asphalt sample 122; as the asphalt sample 122 is stretched, the lifting mechanism 141 is controlled through the control panel 111 to successively raise the corresponding protection monitoring box below the asphalt sample 122, so that the stretched asphalt sample 122 enters the first through hole 142 of the box body 140 and the second through hole 133 of the protection cover 130. At the same time, the driving wheel 144 on the protection monitoring box is controlled to drive the protection cover 130 to rotate above the box body 140, so that the protection cover 130 closes the opening of the box body 140, and the first through hole 142 is docked with the second through hole 133 to form a circular hole. At this time, the stretched asphalt sample 122 is partially enclosed inside the protection monitoring box; as the protection cover 130 rotates above the box body 140, the telescopic plates 134 at both ends of the protection cover 130 will automatically pop out, and the telescopic plates 134 of adjacent two protection monitoring boxes can contact each other, thereby blocking the water in the water tank 110 from flowing into the box body 140 through the circular hole. Since the Tesla valve 145 is provided in the circular hole, it is difficult for the water in the water tank 110 to enter the inside of the box body 140 through the telescopic plate 134 and the circular hole, so that the water flow inside the box body 140 is stable, and the interference of the water in the water tank 110 on the asphalt sample 122 inside the box body 140 is avoided to the greatest extent.

[0050] As the moving plate 116 moves, the stretching length of the asphalt sample 122 can be directly observed through the indicating needle 119 on the moving plate 116 and the scale line 113 on the water tank 100. Since the middle position of the asphalt sample 122 is prone to breakage during the stretching process, when the asphalt sample 122 is stretched to a length close to the easy-to-break length, the middle position of the asphalt sample 122 has been enclosed by the box body 140 and the protection cover 130, so that even if the protection cover 130 on the side close to the moving plate 116 rotates, it will not affect the breakage of the middle position of the asphalt sample 122. At this time, the breakage condition of the asphalt sample 122 can be directly observed through the monitoring window on the protection cover 130, and the maximum stretching length of the asphalt sample 122 can be obtained by observing the data on the scale line 113 at the breakage moment. When all the asphalt samples 122 are broken, the rotation of the lead screw 118 is stopped in time.

[0051] Finally, the stretching length data of the asphalt sample 122 obtained from multiple detections can be analyzed.

[0052] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0053] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An intelligent ductility detection device for modified asphalt, characterized in that, It includes a water tank with a water trough inside. In the water trough, there are a fixed plate and a movable plate at the same horizontal level. The fixed plate is fixedly arranged in the water trough and has a first template on it. The movable plate is slidably arranged in the water trough and has a second template on it. Asphalt samples are placed on the first template and the second template. The movable plate can slide horizontally relative to the fixed plate, driving the second template to move relative to the first template, thereby realizing the stretching of the asphalt samples. There are also multiple protection and monitoring boxes in the water trough. The multiple protection and monitoring boxes are arranged in sequence along the stretching direction of the asphalt samples, and the protection and monitoring boxes are arranged directly below the asphalt samples. The protection and monitoring box includes a box body and a protection cover. In the initial state, the protection cover is inside the box body. As the asphalt samples are gradually stretched, the corresponding protection and monitoring boxes below the asphalt samples can rise in sequence. At the same time, the protection covers of the protection and monitoring boxes can rotate above the box body, thereby enclosing part of the stretched asphalt samples inside the protection and monitoring boxes. The protection cover is semicircular, and the axis direction of the protection cover is the same as the stretching direction of the asphalt samples. A rotating ring is coaxially arranged on the outer periphery of the protection cover. There is an annular groove inside the box body, and the rotating ring is rotatably arranged in the annular groove. There is a driving wheel on the box body, and the driving wheel is in transmission cooperation with the rotating ring to realize the rotation of the protection cover relative to the box body. There are first through holes at both ends of the box body along the stretching direction of the asphalt samples. The first through holes are semicircular holes, and the axis of the first through holes coincides with the axis of the protection cover. A plurality of Tesla valves are arranged circumferentially on the inner wall of the first through holes. The resistance of the Tesla valves to the water flowing into the box body is greater than the resistance of the water flowing out of the box body. There are baffles at both ends of the protection cover along its axis direction. There are second through holes on the baffles. The second through holes are semicircular holes, and the axis of the second through holes coincides with the axis of the protection cover. A plurality of Tesla valves are arranged circumferentially on the inner wall of the second through holes. The second through holes are docked with the first through holes to form a circular hole, and the circular hole is for the stretched asphalt samples to pass through.

2. The intelligent ductility detection device for modified asphalt according to claim 1, characterized in that, There is a lifting mechanism between the bottom of the box body and the bottom of the water trough. The lifting mechanism is used to control the lifting of the protection and monitoring box.

3. The intelligent ductility detection device for modified asphalt according to claim 1, characterized in that, There is a telescopic plate sliding along the axis direction of the protection cover on the baffle, and the telescopic plates on adjacent two protection and monitoring boxes can contact each other.

4. The intelligent ductility detection device for modified asphalt according to claim 1, characterized in that, There is a monitoring window on the protection cover, and a convex lens is arranged on the monitoring window. The convex lens is used to observe the fracture condition of the asphalt samples.

5. The intelligent ductility detection device for modified asphalt according to claim 1, wherein, There is a slide rail extending horizontally in the water trough, and the movable plate is slidably arranged on the slide rail. There is also a lead screw in the water trough, and the movable plate is threadedly connected with the lead screw. By rotating the lead screw, the movable plate slides along the slide rail.

6. The intelligent ductility detection device for modified asphalt according to claim 1, characterized in that, There are also scale lines extending along the stretching direction of the asphalt samples on the water tank. An indicating needle is arranged at one end of the movable plate, and the indicating needle and the scale lines are used to reflect the stretching length of the asphalt samples.

7. The intelligent ductility detection device for modified asphalt according to claim 2, characterized in that, The lifting mechanism is an electric telescopic rod, and there are two electric telescopic rods arranged along the stretching direction of the asphalt samples.

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