A composition detection device for high modulus asphalt pavement

Abstract

The present invention discloses a composition detection device for high modulus asphalt pavement, comprising a detector, a device body for needle penetration detection, equipped with a display and control system, a push detection component, a temperature control module and a standard needle, and an extraction and cleaning auxiliary structure, which is a three-way structure with a specified angle and is fixed to the surface of the detector by bolts, and is initially symmetrically distributed on both sides of the standard needle; the present invention, through the arrangement of the detector and the extraction and cleaning auxiliary structure, can not only realize automatic and precise positioning and stable pressing of the sample dish, thereby effectively ensuring that the sample is in an accurate position and greatly improving the reliability of the detection result, but also after the standard needle detection is completed, the present invention can realize comprehensive and thorough cleaning of the standard needle, which not only reduces the workload of the staff, but also realizes automatic control of the cleaning process, greatly reduces manual intervention and the errors that may be caused thereby, and ensures that the entire device can operate efficiently and accurately.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt composition detection equipment, in particular to a composition detection device for high modulus asphalt pavement. Background Art

[0002] The composition test of high modulus asphalt pavement is crucial. The test covers raw materials, mixture performance and on-site testing. Among them, raw material testing includes the determination of asphalt penetration, softening point, ductility, viscosity and other indicators, the evaluation of aggregate particle shape, gradation, firmness and adhesion with asphalt, and the composition and performance test of additives such as high modulus agent and anti-stripping agent. Mixture performance testing includes Marshall test to determine stability, flow value and void ratio; rutting test to evaluate dynamic stability at high temperature; low temperature bending test to test flexural tensile strength and maximum flexural tensile strain; water stability test to determine the ability to resist water damage through immersion Marshall test and freeze-thaw splitting test; on-site testing includes thickness, flatness, compaction and water permeability coefficient to ensure that the road surface meets the design requirements and ensure driving comfort, strength and durability.

[0003] Asphalt penetration is one of the key indicators for evaluating asphalt quality. It not only reflects the hardness and consistency of asphalt, but also reflects its ability to resist shear damage. This value can, to a certain extent, reveal the relative viscosity characteristics of asphalt under different temperature conditions. Specifically, when the asphalt penetration is large, it means that the asphalt is relatively soft and has a low softening point. Therefore, the performance in high temperature environment will decrease with the increase of penetration; on the contrary, under low temperature conditions, a higher penetration may bring better performance.

[0004] At present, when testing the penetration of asphalt with a penetration tester, the standard needle is inserted into the sample under constant temperature conditions through the penetration test device, and multiple samples are punctured at least 3 times each, and finally the experimental data are recorded. The current asphalt penetration test device and method mainly rely on manual operation of the operator, in which the extraction of the standard needle after insertion into the sample, the cleaning of the standard needle, and the replacement of the standard needle all require manual cooperation, which is relatively troublesome. Even if some penetration testers can realize automatic replacement of the standard needle, they cannot clean and recycle the standard needle, and still require manual cooperation, which can easily affect the secondary detection task of the penetration tester.

[0005] To this end, a composition detection device for high modulus asphalt pavement is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a composition detection device for high modulus asphalt pavement to solve the problem of troublesome extraction, cleaning and replacement of the standard needle after inserting the standard needle into the sample when detecting the asphalt penetration by the composition detection device for high modulus asphalt pavement proposed in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a composition detection device for high modulus asphalt pavement, comprising:

[0008] The detector is the main body of the device for needle penetration testing, and is equipped with a display and control system, a push detection component, a temperature control module, and a standard needle;

[0009] The extraction and cleaning auxiliary structure is a three-way structure with a specified angle and is fixed to the surface of the detector by bolts and is initially symmetrically distributed on both sides of the standard needle;

[0010] Wherein, the lower surface of the push detection assembly is connected with a ball push rod via bolts at the rear side of the standard needle;

[0011] The extraction and cleaning auxiliary structure comprises a positioning and lifting tube rack, a bearing sleeve is slidably arranged inside the positioning and lifting tube rack, a rotating tube is rotatably inserted inside the bearing sleeve, and at least two thread grooves are opened on the inner wall of the rotating tube along the axis ring array, and the rotating tube is connected to the ball push rod in a sliding manner through the thread groove, and the lower end of the rotating tube is fixed to the connecting frame, and the connecting frame is respectively fixed to the alignment sleeve and the cleaning box;

[0012] Two slide grooves are symmetrically arranged on the inner wall of the alignment sleeve along the axis, and a sample dish docking sleeve is slidably arranged inside through the cooperation of the slide groove and the slider, and a buffer spring is fixed to the bottom surface of one of the sliders, and one of the sliders of the sample dish docking sleeve extends out of the alignment sleeve and is fixed to the output end of the pressing electric push rod, and the pressing electric push rod is connected to the mounting frame integrally arranged on the side of the sample dish docking sleeve by bolts;

[0013] A soft-jointed docking piece is slidably arranged in the extended area above the notch of the needle entry slot provided inside the cleaning box, a piston rod is fixedly arranged at the center position of the soft-jointed docking piece facing away from the standard needle convex surface, one end of the piston rod extends from the inside of the needle entry slot into the cleaning fluid channel provided inside the cleaning box, and is limited and reset inside the cleaning fluid channel by a connected hydraulic spring at the penetrated piston end, a branch extending upward from the cleaning fluid channel passes through the cleaning box, and is connected to an output interface of a liquid supply tank inserted inside the cleaning box through a pipeline, A wheel chamber is provided on the path of the cleaning liquid channel, at least one branch connected to the inside of the needle entry groove is provided on the path of the cleaning liquid channel, and a nozzle for spraying liquid is arranged inside each branch, a semi-tube is rotatably provided at the axial position in the needle entry groove, the semi-tube consists of an arc plate and a short tube, wherein a soft brush and a cotton pad are bonded and fixed to the inner concave surface of the arc plate, the short tube extends downward through the axis of the wheel chamber and penetrates the cleaning box, and a torsion spring is fixed at the lower end, and a hydraulic impeller is fixed on the side surface of the tube of the semi-tube inside the wheel chamber.

[0014] Preferably, the detector includes an operating table, a control console for controlling the device and a display screen for displaying data are provided on the front side of the operating table, and a heating table for heating and keeping the sample dish warm is arranged on the front side of the interior, and a hydraulic lifting assembly for lifting is connected to the surface of the operating table by bolts on the rear side of the heating table, the output end of the hydraulic lifting assembly is fixed to the push detection assembly, and a structure for fixing and pushing a standard needle is arranged inside the push detection assembly at a position corresponding to the heating table, and at least two rod bodies of ballpoint pen structures are fixed to the side of the ball push rod near the lower end along the axial ring array.

[0015] Preferably, the positioning and lifting pipe rack is fixed above the front side of the hydraulic lifting assembly by bolts, and at least two slide grooves are opened inside the positioning and lifting pipe rack along the axial ring array, and the inside of the slide grooves are slidingly limited to provide fault-tolerant positioning springs, the fault-tolerant positioning springs are composed of a slider and two upper and lower springs, and the slider is fixed to the peripheral side of the bearing sleeve located inside the positioning and lifting pipe rack, thereby providing the bearing sleeve with the ability to move up and down.

[0016] Preferably, the number of turns of the thread groove is set according to the space allowed for movement of the device and is between zero and ninety degrees.

[0017] Preferably, the connecting frame has two arms distributed vertically, and the angle between the arms is related to the number of turns of the thread groove.

[0018] Preferably, the alignment sleeve is located directly above the sample dish, and the lower surface is arranged adjacent to the water bath slot of the sample dish. When the cleaning box rotates along the connecting frame, the standard needle can be translated and retracted through the needle entry slot provided inside the cleaning box.

[0019] Preferably, the groove shape of the needle entry groove is the same as the shape of a standard needle, and the standard needle is moved into the notch of the needle entry groove to expand the arrangement.

[0020] Preferably, the cleaning liquid channel consists of a three-way pipeline opened at the upper part of the cleaning box, a pipeline extending downward after turning along the three-way pipeline, a C-type pipeline opened at the lower part of the cleaning box, and a pipeline extending upward after turning along the C-type pipeline, wherein the branch extending upward from the three-way pipeline passes through the cleaning box, the wheel chamber is opened on the path of the C-type pipeline, the pipeline extending upward is in the same straight line as the needle entry groove, and the liquid supply tank also has an output interface.

[0021] Preferably, the outer sleeve of the torsion spring is provided with a semi-through protective tube, and the lower end of the torsion spring is fixed to the protective tube, and the protective tube is fixed just below the semi-tube on the surface of the cleaning box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts the arrangement of a hydraulic lifting assembly, a ball push rod, a positioning lifting tube frame, a bearing sleeve, a fault-tolerant positioning spring, a rotating tube, a threaded groove, a connecting frame, an alignment sleeve, a sample dish docking sleeve, a pressing electric push rod, a buffer spring and a mounting frame. When the sample is punctured, the pressing electric push rod can push the sample dish docking sleeve to slide downward along the inner wall of the alignment sleeve, dock with the upper port of the sample dish through the lower ring groove, and use the buffer spring for buffering, thereby realizing stable pressing and positioning of the sample dish. Stable sample dish fixing helps to keep the position of the sample unchanged during the puncture detection process, thereby ensuring the reliability of the detection result. Moreover, after the sample puncture detection, when the standard needle is lifted and removed from the sample, the pressing and positioning state of the sample dish can be continuously maintained, thereby ensuring that the standard needle is stably separated from the sample. This process does not require manual contact with the sample dish, thereby greatly reducing the trouble of detection and the influence of human factors on the detection.

[0024] 2. The present invention can utilize the relative force to push the piston rod after the standard needle and the soft-joint piece are connected, thereby pushing the liquid flow in the cleaning liquid channel, and then utilize the flowing liquid to realize the half-pipe fitting. While rotating, the nozzle sprays onto the surface of the standard needle, and the soft brush and cotton pad rotate together to sweep the dust and wet brush on the eccentric or around-axis standard needle to ensure that there is no dirt on the surface of the standard needle, which greatly reduces the workload of technicians during inspection and improves the cleaning effect of the standard needle, which is beneficial to the accuracy of the next inspection. At the same time, from the time the standard needle is moved into the needle slot to the reset of each component after cleaning is completed, there is no need for excessive manual intervention, thus realizing automated cleaning process control and reducing the complexity of manual operation and possible errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional structural view of the present invention;

[0026] Figure 2 A disassembled diagram of the detector and the extraction and cleaning auxiliary structure of the present invention;

[0027] Figure 3 A partial disassembled diagram of the positioning and lifting pipe rack of the extraction and cleaning auxiliary structure of the present invention;

[0028] Figure 4 This is a disassembled view of the alignment sleeve portion of the extraction and cleaning auxiliary structure of the present invention;

[0029] Figure 5 A cross-sectional view of a cleaning box of the extraction and cleaning auxiliary structure of the present invention;

[0030] Figure 6 A schematic diagram of a half pipe and its connection structure of the present invention;

[0031] Figure 7 It is a multiple cross-sectional view of the cleaning box of the present invention.

[0032] In the figure:

[0033] 1. Detector; 11. Operating table; 12. Hydraulic lifting assembly; 13. Push detection assembly; 14. Standard needle; 15. Ball push rod;

[0034] 2. Extraction and cleaning auxiliary structure; 21. Positioning and lifting pipe rack; 211. Bearing sleeve; 2111. Fault-tolerant adjustment spring;

[0035] 212, rotating tube; 2121, threaded groove; 213, connecting frame; 22, alignment sleeve; 221, sample dish docking sleeve; 222, fixed electric push rod; 223, buffer spring; 224, mounting frame; 23, cleaning box; 231, needle entry groove; 232, soft docking piece; 2321, piston rod; 2322, hydraulic spring; 233, cleaning liquid channel; 2331, wheel chamber; 2332, nozzle; 234, semi-pipe fitting; 2341, soft brush; 2342, cotton pad; 2343, hydraulic impeller; 2344, torsion spring; 235, liquid supply tank. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7 The present invention provides a technical solution for a composition detection device for high modulus asphalt pavement:

[0038] A composition detection device for high modulus asphalt pavement, comprising:

[0039] The detector 1 is the main body of the device for needle penetration testing, and is equipped with a display and control system, a push detection component 13, a temperature control module and a standard needle 14;

[0040] The extraction and cleaning auxiliary structure 2 is a three-way structure with a specified angle, and is fixed to the surface of the detector 1 by bolts, and is initially symmetrically distributed on both sides of the standard needle 14.

[0041] The detector 1 includes an operating table 11, and a control console for controlling the device and a display screen for displaying data are arranged on the front side of the operating table 11, and a heating table for heating and keeping the sample dish warm is arranged on the front side of the interior, and a hydraulic lifting component 12 for lifting is connected to the surface of the operating table 11 at the rear side of the heating table by bolts, and the output end of the hydraulic lifting component 12 is fixed to a push detection component 13, and a structure for fixing and pushing a standard needle 14 is arranged inside the push detection component 13 at a position corresponding to the heating table, and a ball push rod 15 is connected to the lower surface of the push detection component 13 at the rear side of the standard needle 14 by bolts, and at least two ballpoint pen structure rods are fixed to the side of the ball push rod 15 near the lower end along the axial ring array.

[0042] The extraction and cleaning auxiliary structure 2 includes a positioning and lifting pipe rack 21, which is fixed above the front side of the hydraulic lifting assembly 12 by bolts, and the interior of the positioning and lifting pipe rack 21 is provided with at least two slide grooves along the axial ring array, and the interior of the slide groove is provided with a fault-tolerant positioning spring 2111 in a sliding manner, and the fault-tolerant positioning spring 2111 is composed of a slider and two upper and lower springs, and the slider is fixed to the peripheral side of the bearing sleeve 211 located inside the positioning and lifting pipe rack 21, and thereby provides the bearing sleeve 211 with the ability to move up and down, and a rotating tube 212 is rotatably inserted inside the bearing sleeve 211, and at least two thread grooves 2121 are opened on the inner wall of the rotating tube 212 along the axial ring array, and the rotating tube 212 is slidable through the thread groove 2121 is connected to the ball push rod 15 in a sliding manner. The number of turns of the thread groove 2121 is set according to the space allowed for movement of the device and is between zero and ninety degrees. The lower end of the rotating tube 212 is fixed to the connecting frame 213 extending through the positioning and lifting pipe frame 21 and the bearing sleeve 211. The connecting frame 213 has two upper and lower arms, and the angle between the arms is related to the number of turns of the thread groove 2121. The upper and lower arms are respectively fixed to the alignment sleeve 22 and the cleaning box 23, wherein the alignment sleeve 22 is located directly above the sample dish, and the lower surface is arranged adjacent to the water bath notch of the sample dish. When the cleaning box 23 rotates along the connecting frame 213, the standard needle 14 can be translated and collected through the needle entry groove 231 provided inside the cleaning box 23;

[0043] Two sliding grooves are symmetrically provided on the inner wall of the alignment sleeve 22 along the axis, and a sample dish docking sleeve 221 is slidably provided inside through the cooperation of the sliding groove and the slider, and a buffer spring 223 is fixed to the bottom surface of one of the sliders to limit the sliding of the sample dish docking sleeve 221, one of the sliders of the sample dish docking sleeve 221 extends out of the alignment sleeve 22 and is fixed to the output end of the pressing electric push rod 222, and the pressing electric push rod 222 is connected to the mounting frame 224 integrally provided on the side of the sample dish docking sleeve 221 by bolts, and the lower annular surface of the sample dish docking sleeve 221 is provided with an annular groove for docking with the upper ring frame of the sample dish, and the groove width of the annular groove is greater than the width of the upper ring frame of the sample dish.

[0044] During the test, the hydraulic lifting assembly 12 guides the push detection assembly 13 to move down to the specified puncture height, driving the ball push rod 15 to move, and the ball push rod 15 moves along the internal thread groove 2121 of the rotating tube 212 to make the rotating tube 212 rotate in the bearing sleeve 211, driving the connecting frame 213 and the alignment sleeve 22 and its connecting structure to move to the bottom of the standard needle 14. Initially, the standard needle 14 is suspended above the alignment sleeve 22 and the sample dish, and the pressing electric push rod 222 pushes the sample dish docking sleeve 221 to dock with the sample dish for pressing and positioning, and the push detection assembly 13 pushes the standard needle 14 for puncture detection. After the test is completed, the push detection assembly 13 lifts the standard needle 14 and resets it, and the pressing electric push rod 222 pushes the sample dish docking sleeve 221 to reset it.

[0045] In summary, by means of the arrangement of the hydraulic lifting assembly 12, the ball push rod 15, the positioning lifting tube frame 21, the bearing sleeve 211, the fault-tolerant positioning spring 2111, the rotating tube 212, the threaded groove 2121, the connecting frame 213, the alignment sleeve 22, the sample dish docking sleeve 221, the pressing electric push rod 222, the buffer spring 223 and the mounting frame 224, not only can the pressing electric push rod 222 push the sample dish docking sleeve 221 to slide downward along the inner wall of the alignment sleeve 22 when the sample is punctured, but also the lower ring groove and the upper ring groove of the sample dish can be used to contact each other. The ports are docked and buffered by a buffer spring 223, thereby achieving stable pressure and positioning of the sample dish. Stable fixation of the sample dish helps to keep the position of the sample unchanged during the puncture test, thereby ensuring the reliability of the test result. Moreover, after the sample puncture test, when the standard needle 14 is lifted and removed from the sample, the sample dish can be continuously pressed and positioned to ensure that the standard needle 14 is stably separated from the sample. This process does not require manual contact with the sample dish, which greatly reduces the trouble of testing and the influence of human factors on the test.

[0046] As an embodiment of the present invention, Figure 5 and Figure 7As shown, the groove type of the needle entry groove 231 is the same as the shape of the standard needle 14, but the space of the needle entry groove 231 is larger than the volume of the needle head of the standard needle 14, and the standard needle 14 moves into the groove of the needle entry groove 231. The slot expansion setting, and initially, a soft connection piece 232 is slidably provided in the expansion area above the slot of the needle entry groove 231, and the soft connection piece 232 is fixedly provided with a piston rod 2321 at the center position facing away from the raised surface of the standard needle 14, and one end of the piston rod 2321 extends from the inside of the needle entry groove 231 to penetrate into the cleaning liquid channel 233 opened in the cleaning box 23, and the piston rod 2321 is inserted into the piston The end is limited and reset inside the cleaning fluid channel 233 by the connected hydraulic spring 2322. The cleaning fluid channel 233 is composed of a three-way pipeline opened at the top of the cleaning box 23, a pipeline extending downward after turning along the three-way pipeline, a C-type pipeline opened at the bottom of the cleaning box 23, and a pipeline extending upward after turning along the C-type pipeline. Among them, the branch extending upward from the three-way pipeline passes through the cleaning box 23 and is connected to the output interface of the liquid supply tank 235 inserted in the cleaning box 23 through the pipeline. A wheel chamber 2331 is opened on the path of the C-type pipeline, and the pipeline extending upward The needle-entry slot 231 is in the same straight line, and at least one branch is opened on the upwardly extending pipeline path that is connected to the inside of the needle-entry slot 231, and the inside of the branch is equipped with a nozzle 2332 for spraying liquid. The liquid supply tank 235 also has an output interface. A semi-tube 234 is rotatably arranged at the axial position in the needle-entry slot 231. The semi-tube 234 is composed of an arc plate and a short tube. The length of the arc plate is greater than the length of the needle head of the standard needle 14, and a soft brush 2341 and a cotton pad 2342 are bonded and fixed to the inner concave surface thereof, and the soft brush 2341 and the cotton pad 2342 occupy an arc of 1.5 mm and 1.5 mm, respectively. The half of the concave surface of the shaped plate, a conical through-pipe is opened inside the short tube, and the short tube extends downward through the axis of the wheel chamber 2331 and penetrates the cleaning box 23, and a torsion spring 2344 is fixed at the lower end, and the side surface of the half-tube 234 is fixed with a hydraulic impeller 2343 inside the wheel chamber 2331, and the hydraulic impeller 2343 is driven by the liquid inside the cleaning liquid channel 233, and the outer part of the torsion spring 2344 is provided with a semi-through protective tube, and the lower end of the torsion spring 2344 is fixed to the protective tube, and the protective tube is fixed directly below the half-tube 234 on the surface of the cleaning box 23.

[0047] During operation, the hydraulic lifting assembly 12 pushes the push detection assembly 13 upward, drives the ball push rod 15 upward, reverses the rotating tube 212, and drives the connecting frame 213 and the cleaning box 23 to rotate and approach the standard needle 14. The standard needle 14 moves into the needle entry groove 231 and magnetically docks with the soft docking piece 232, pushes the soft docking piece 232 to move, pushes the piston rod 2321 to squeeze the liquid in the cleaning liquid channel 233, and the liquid drives the hydraulic impeller 2343, which is sprayed toward the standard needle 14 through the nozzle 2332. The hydraulic impeller 2343 drives the semi-tube 234, the soft brush 2341 and the cotton pad 2342 to rotate and clean the standard needle 14. The standard needle 14 moves to the deepest part of the needle entry groove 231 and stops pushing. The hydraulic lifting component 12 drives the push detection component 13 to reset downward. The cleaning box 23 drives the ball push rod 15 to move downward, causing the rotating tube 212 to rotate forward. The connecting frame 213 drives the cleaning box 23 away from the standard needle 14. The standard needle 14 is separated from the soft connecting piece 232 and moves out of the needle entry groove 231. The piston rod 2321 is reset under the action of the hydraulic spring 2322, and the half pipe 234 is reset under the action of the torsion spring 2344. The cleaning liquid channel 233 generates negative pressure due to the spraying of liquid, and the liquid in the liquid supply tank 235 is replenished into the cleaning liquid channel 233 to restore the initial state.

[0048] In summary, through the arrangement of the hydraulic lifting assembly 12, the ball push rod 15, the positioning lifting tube frame 21, the bearing sleeve 211, the fault-tolerant adjustment spring 2111, the rotating tube 212, the threaded groove 2121, the connecting frame 213, the cleaning box 23, the needle entry groove 231, the soft connection docking piece 232, the piston rod 2321, the hydraulic spring 2322, the cleaning fluid channel 233, the wheel chamber 2331, the nozzle 2332, the semi-pipe fitting 234, the soft brush 2341, the cotton pad 2342, the hydraulic impeller 2343, the torsion spring 2344 and the liquid supply tank 235, after the standard needle 14 is docked with the soft connection docking piece 232, the relative force can be used to push the piston rod 2321, thereby pushing the cleaning fluid channel The liquid inside 233 flows, and then the flowing liquid is used to realize the rotational drive of the half-tube 234, and at the same time, the nozzle 2332 is cooperated to spray the surface of the standard needle 14, and the eccentric or around-axis dust sweeping and wet brush cleaning of the standard needle 14 are performed under the rotation cooperation of the soft brush 2341 and the cotton pad 2342, so as to ensure that the surface of the standard needle 14 is free of dirt, which greatly reduces the workload of technicians during inspection, improves the cleaning effect of the standard needle 14, and is beneficial to the accuracy of the next inspection. At the same time, from the time the standard needle 14 is moved into the needle slot 231 to the reset of each component after the cleaning is completed, there is no need for excessive manual intervention, thereby realizing automatic cleaning process control and reducing the complexity of manual operation and possible errors.

[0049] Working principle: When working, first adjust the test parameters such as time and temperature by controlling the operating table 11, then place the water bath on the surface of the insulation table, so that the water in the water bath quickly heats up and stabilizes at the specified test temperature, then place the asphalt sample that has been insulated for half an hour in the constant temperature water bath, then take out the standard needle 14, and place the standard needle 14 under the push detection component 13, then stably insert the standard needle 14 upward into the push detection component 13, and control the push detection component 13 to fix the standard needle 14. After fixation, the program can be started to test the sample; during the test, the hydraulic lifting component 12 will guide the push detection component 13 downward to move it to the specified puncture height. During this process, the push detection component 13 The downward movement will drive the ball push rod 15 to move, and then the ball push rod 15 will move along the thread groove 2121 inside the rotating tube 212 through the ball rod at the lower end. Since the thread groove 2121 is spiral, the ball push rod 15 moves downward in a straight line. Therefore, as the ball push rod 15 moves downward, the rotating tube 212 will gradually rotate inside the bearing sleeve 211, and the rotating rotating tube 212 will coaxially drive the connecting frame 213 to rotate, and then the connecting frame 213 will drive the alignment sleeve 22 and its connecting structure to move to the bottom of the standard needle 14. Initially, the standard needle 14 is suspended above the alignment sleeve 22 and is above the sample dish. Then the fixed electric push rod 222 will push the sample dish docking sleeve 221 to slide downward along the inner wall of the alignment sleeve 22, and the sample dish docking sleeve 221 will slide downward along the inner wall of the alignment sleeve 22. The dish docking sleeve 221 will dock with the upper port of the sample dish through the lower ring groove to press and position the sample dish, and then the push detection component 13 will push the standard needle 14 to perform puncture detection on the sample. After the detection is completed, the push detection component 13 will lift the standard needle 14 to make it separate from the sample dish and reset it to the initial position. At the same time, the fixed electric push rod 222 will push up the sample dish docking sleeve 221 to reset it to the initial position, and then the hydraulic lifting component 12 will push up the push detection component 13. As the push detection component 13 moves upward, the push detection component 13 will drive the ball push rod 15 to move upward, and then the ball push rod 15 will cooperate with the threaded groove 2121 to perform reverse rotation drive of the rotating tube 212, so that it drives the connecting frame 213 and the alignment sleeve 22 and its The connecting structure is reset to the initial state, and then the hydraulic lifting component 12 will continue to push the push detection component 13 upward, and the push detection component 13 will drive the ball push rod 15 to move upward. As the ball push rod 15 moves upward, it will cooperate with the threaded groove 2121 to drive the rotating tube 212 to continue to reverse, and the reversed rotating tube 212 will drive the coaxial connecting frame 213 to rotate, and then the connecting frame 213 will drive the cleaning box 23 to gradually rotate and move closer to the position of the standard needle 14. When the standard needle 14 moves into the needle entry groove 231, the standard needle 14 will first be magnetically connected to the soft docking piece 232, and then the standard needle 14 will push the soft docking piece 232 to move along the needle entry groove 231 through the metal rod integrated with the needle head. During the movement of the soft docking piece 232,It will push the piston rod 2321 to move along the cleaning liquid channel 233, and while compressing the hydraulic spring 2322, squeeze and push the liquid in the cleaning liquid channel 233, which is a suitable liquid for cleaning the standard needle 14. Then the liquid will move along the cleaning liquid channel 233. A check valve is arranged at the output interface of the liquid supply tank 235, so that the liquid will not flow back along the pipeline, and during the movement, the hydraulic impeller 2343 arranged inside the wheel chamber 2331 is driven to rotate. The liquid passing through the wheel chamber 2331 will continue to flow along the cleaning liquid channel 233, and will be sprayed toward the needle 14 through the nozzle 2332. When the surface of the standard needle 14 inside the needle slot 231 is initially blocked by the nozzle 2332, the rotating hydraulic impeller 2343 drives the half-tube 234 to rotate, and then the half-tube 234 drives the soft brush 2341 and the cotton pad 2342 to rotate, and in the rotation process, the needle head of the standard needle 14 that moves to the axial area of ​​the needle slot 231 is cleaned eccentrically or around the axis with a wet brush in coordination with the sprayed liquid to avoid dirt on the surface of the standard needle 14. When the standard needle 14 moves to the deepest part of the needle slot 231, the piston rod 2321 is stopped from being pushed. The hydraulic lifting assembly 12 will drive the push detection assembly 13 to move downward and reset, and the cleaning box 23 will drive the ball push rod 15 to move downward, and then the ball push rod 15 will cooperate with the threaded groove 2121 to drive the rotating tube 212 to rotate forward, and then the rotating tube 212 will drive the connecting frame 213 to rotate, and the rotating connecting frame 213 will drive the cleaning box 23 to rotate away from the standard needle 14, and then the standard needle 14 will gradually disengage from the soft connection piece 232 and gradually move out of the range of the needle entry groove 231, and then the piston rod 2321 will be in the hydraulic spring 2322 The semi-tube 234 will be reset under the action of the torsion spring 2344, and the liquid in the cleaning liquid channel 233 will be ejected outward through the nozzle 2332, resulting in a decrease in the liquid in the cleaning liquid channel 233. After the hydraulic spring 2322 and the torsion spring 2344 are reset, the cleaning liquid channel 233 will have a negative pressure due to the lack of liquid replenishment. Under the action of negative pressure, the liquid in the liquid supply tank 235 will enter the cleaning liquid channel 233 through the pipeline to replenish the liquid, so that it can be restored to the initial state. After the sample dish is manually adjusted, the sample can be tested again.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composition detection device for high modulus asphalt pavement, comprising: The detector (1) is a device body for needle penetration testing, comprising a display and control system, a push detection component (13), a temperature control module and a standard needle (14), and is characterized in that: The extraction and cleaning auxiliary structure (2) is a three-way structure with a specified angle, and is fixed to the surface of the detector (1) by bolts, and is initially symmetrically distributed on both sides of the standard needle (14); Wherein, the lower surface of the push detection assembly (13) is connected to a ball push rod (15) via bolts at the rear side of the standard needle (14); The extraction and cleaning auxiliary structure (2) comprises a positioning and lifting tube rack (21), a bearing sleeve (211) is slidably arranged inside the positioning and lifting tube rack (21), a rotating tube (212) is rotatably inserted inside the bearing sleeve (211), and at least two thread grooves (2121) are provided on the inner wall of the rotating tube (212) along the axis of a circular array, and the rotating tube (212) is connected to the ball push rod (15) in a sliding manner through the thread grooves (2121), and the lower end of the rotating tube (212) is fixed to a connecting frame (213), and the connecting frame (213) is respectively fixed to the alignment sleeve (22) and the cleaning box (23); Two slide grooves are symmetrically provided on the inner wall of the alignment sleeve (22) along the axis, and a sample dish docking sleeve (221) is slidably arranged inside the inner wall through the cooperation between the slide groove and the slider, and a buffer spring (223) is fixed to the bottom surface of one of the sliders, and a slider on the side of the sample dish docking sleeve (221) opposite to the buffer spring (223) extends out of the alignment sleeve (22) and is fixed to the output end of the pressing electric push rod (222), and the pressing electric push rod (222) is connected to a mounting frame (224) integrally arranged on the side of the sample dish docking sleeve (221) by bolts; A flexible docking piece (232) is slidably provided in an extended area above the notch of the needle entry groove (231) provided inside the cleaning box (23); a piston rod (2321) is fixedly provided at a central position of the flexible docking piece (232) facing away from the raised surface of the standard needle (14); one end of the piston rod (2321) extends from the inside of the needle entry groove (231) and penetrates into a cleaning fluid channel (233) provided inside the cleaning box (23); and the piston end that penetrates is limited and reset inside the cleaning fluid channel (233) by a connected hydraulic spring (2322); a branch extending upward from the cleaning fluid channel (233) penetrates the cleaning box (23) and is connected to an output interface of a liquid supply tank (235) inserted into the cleaning box (23) through a pipeline; A wheel chamber (2331) is provided on the path of the liquid channel (233), at least one branch communicating with the inside of the needle entry groove (231) is provided on the path of the cleaning liquid channel (233), and a nozzle (2332) for spraying liquid is arranged inside each branch, a semi-tube (234) is rotatably arranged at the axial position in the needle entry groove (231), and the semi-tube (234) is composed of an arc plate and a short tube, wherein a soft brush (2341) and a cotton pad (2342) are bonded and fixed to the inner concave surface of the arc plate, the short tube extends downward through the axis of the wheel chamber (2331) and penetrates the cleaning box (23), and a torsion spring (2344) is fixed at the lower end, and a hydraulic impeller (2343) is sleeved and fixed on the tube side surface of the semi-tube (234) inside the wheel chamber (2331).

2. A composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The detector (1) comprises an operating table (11), the front side of the operating table (11) is provided with a control console for controlling the device and a display screen for displaying data, and the front side of the interior is provided with a heating table for heating and keeping the sample dish warm, and the surface of the operating table (11) is connected to a hydraulic lifting component (12) for lifting and lowering by bolts at the rear side of the heating table, the output end of the hydraulic lifting component (12) is fixed to a push detection component (13), and the interior of the push detection component (13) is provided with a structure for fixing and pushing a standard needle (14) at a position corresponding to the heating table, and at least two rod bodies of ballpoint pen structures are fixed to the side of the ball push rod (15) near the lower end along the axis of the circular array.

3. A composition detection device for high modulus asphalt pavement according to claim 2, characterized in that: The positioning and lifting pipe rack (21) is fixed above the front side of the hydraulic lifting assembly (12) by bolts, and at least two slide grooves are provided in an annular array along the axis inside the positioning and lifting pipe rack (21), and the inside of each slide groove is provided with a fault-tolerant positioning spring (2111) in a sliding manner, and the fault-tolerant positioning spring (2111) is composed of a slider and two upper and lower springs, and the slider is fixed to the peripheral side of a bearing sleeve (211) located inside the positioning and lifting pipe rack (21), thereby providing the bearing sleeve (211) with the ability to move up and down.

4. A composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The number of turns of the thread groove (2121) is set according to the space allowed for movement of the device and is between zero and ninety degrees.

5. The composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The connecting frame (213) has two upper and lower supporting arms, and the angle between the supporting arms is related to the number of turns of the thread groove (2121).

6. A composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The alignment sleeve (22) is located directly above the sample dish, and the lower surface is arranged adjacent to the water bath slot of the sample dish. When the cleaning box (23) rotates along the connecting frame (213), the standard needle (14) is translated and received through the needle entry slot (231) provided inside the cleaning box (23).

7. The composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The groove shape of the needle entry groove (231) is the same as the shape of the standard needle (14), and the standard needle (14) is moved into the groove opening of the needle entry groove (231) to expand.

8. The composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The cleaning liquid channel (233) is composed of a three-way pipeline opened at the top of the cleaning box (23), a pipeline extending downward after turning along the three-way pipeline, a C-shaped pipeline opened at the bottom of the cleaning box (23), and a pipeline extending upward after turning along the C-shaped pipeline, wherein the branch extending upward from the three-way pipeline passes through the cleaning box (23), the wheel chamber (2331) is opened on the path of the C-shaped pipeline, the pipeline extending upward is in the same straight line as the needle insertion groove (231), and the liquid supply tank (235) also has an output interface.

9. A composition detection device for high modulus asphalt pavement according to claim 1, characterized in that: The outer sleeve of the torsion spring (2344) is provided with a semi-through protective tube, and the lower end of the torsion spring (2344) is fixed to the protective tube, and the protective tube is fixed directly below the semi-tube (234) on the surface of the cleaning box (23).

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