Modified asphalt penetration detection device for road and bridge construction

Abstract

The invention discloses a modified asphalt penetration detection device for road and bridge construction, relates to the field of asphalt penetration detection, and aims to solve the problems of infirm installation, low detection efficiency and poor precision caused by repeated disassembly and assembly of a standard needle of an existing detection device. The device comprises a control base, a mounting rod, a material containing tank, a detection host, two measuring instruments and corresponding standard needles, and the core is that a detection mechanism, a cleaning mechanism and a pressing and supporting mechanism are integrated. The detection mechanism realizes position exchange of double standard needles through a turntable and supports continuous detection; the cleaning mechanism automatically cleans needle body residues through a synchronous belt and a cleaning brush; the pressing and supporting mechanism provides vertical supporting for the standard needle through the pressing block. The standard needle does not need to be repeatedly disassembled and assembled, the detection efficiency and precision are remarkably improved, and the method is suitable for quality detection scenes of modified asphalt in road and bridge construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of asphalt penetration detection, in particular to a modified asphalt penetration detection device for road and bridge construction. BACKGROUND

[0002] Modified asphalt is crucial in road and bridge construction. By adding modifiers or using special processes to improve performance, it has higher high-temperature resistance, low-temperature resistance, aging resistance, and fatigue resistance than ordinary asphalt, which can significantly improve the durability, safety, and comfort of roads and bridge pavements.

[0003] Modified asphalt penetration detection is a key test for evaluating its softness and consistency. By measuring the depth of a standard needle vertically penetrating the asphalt sample under specific conditions, it reflects the viscosity and high-temperature performance of the asphalt. This index directly affects the anti-rutting ability and workability of asphalt pavement. According to the standard, at least three parallel tests are required, i.e., the standard needle needs to be inserted into the asphalt three times.

[0004] In the existing detection process, the standard needle needs to be removed from the detector after each detection, cleaned of surface asphalt residue, and then reinstalled for the next detection. The standard needle is usually fixed by bolts, and repeated disassembly and installation can cause the standard needle and the detector installation port to become loose and not firmly installed, which affects the accuracy of modified asphalt penetration detection. At the same time, frequent disassembly and installation also reduce the detection efficiency. SUMMARY

[0005] To solve the above problems, the present application aims to provide a modified asphalt penetration detection device for road and bridge construction. Through the cooperation of the double-needle switching detection mechanism, the automatic cleaning mechanism, and the anti-tilting pressing mechanism, the device realizes "continuous detection + automatic cleaning + accurate needle insertion" without the need to repeatedly disassemble the standard needle, which is equivalent to installing an automatic assembly line for asphalt detection.

[0006] To achieve the above purpose, the technical solution of the present application is as follows: The utility model provides a kind of modified asphalt penetration detection device for road and bridge construction, it include: control base and installation on the top of the control base installation rod and material tank, the top of the installation rod is equipped with detection host, the inside of the detection host is provided with two measuring instruments, the bottom of the measuring instrument is provided with standard needle;It further includes: detection mechanism, for continuous detection to asphalt sample, the detection mechanism is installed in the inside of the detection host, and the detection mechanism includes the turntable being arranged at the bottom of the detection host, and the turntable can exchange the position of two standard needles;Cleaning mechanism, for the asphalt residue on the surface of the standard needle is cleaned, the cleaning mechanism is installed on the outside of the installation rod, and the cleaning mechanism includes cleaning box being installed on the outside of the installation rod, and the cleaning box can clean the standard needle;Pressing mechanism makes the standard needle be inserted into asphalt sample smoothly and vertically, and the pressing mechanism is installed at the bottom of the detection host, and the pressing mechanism includes the pressing block being arranged below the detection host, and the pressing block can provide support for the standard needle.

[0007] Further, the detection mechanism further includes a motorized telescopic rod installed inside the detection host, a mounting box is installed at the bottom end of the motorized telescopic rod, a first motor is installed inside the mounting box, a turntable is connected to the output end of the first motor, a connecting seat is installed between the bottom of the measuring instrument and the turntable, a rotating rod is rotatably installed at the bottom end of the connecting seat, a hinged seat is fixedly installed between the two ends of the rotating rod, the standard needle is installed at the bottom of the hinged seat to realize the outward swinging of the standard needle, a sliding block is fixedly installed outside the rotating rod, an annular cavity is formed in the inside of the connecting seat, a fixed block is installed inside the annular cavity, an arc spring is installed between the sliding block and the fixed block, first gears are fixedly installed at the two ends of the rotating rod, two mounting racks are fixedly installed outside the cleaning box, first and second racks are fixedly installed outside the mounting racks, and the length of the second racks is less than the length of the first rack; when cleaning, the first gears can engage with the first and second racks to realize the back-and-forth reciprocating swinging of the standard needle into the cleaning position of the cleaning mechanism.

[0008] Further, the cleaning mechanism further includes two synchronous belts arranged inside the cleaning box, two rotating rollers are arranged inside the synchronous belts, the rotating rollers are rotatably installed inside the cleaning box, a plurality of cleaning brushes are fixedly installed outside the synchronous belts, a positioning rack is installed at the top of the cleaning box, the top ends of the two rotating rollers away from the turntable extend to the inside of the positioning rack, a second motor is installed at the top of the positioning rack, the output end of the second motor is fixedly connected to the top end of the adjacent rotating roller, second gears are fixedly installed at the top ends of the two rotating rollers close to the positioning rack, the two second gears engage with each other, and a plurality of scraping brushes are fixedly installed inside the cleaning box.

[0009] Further, the pressing mechanism further comprises a supporting arm mounted outside the detection host, the inner side of the supporting arm is fixedly mounted with two sliding frames, a sleeve box is slidingly mounted between the two sliding frames, the pressing block is slidingly mounted on the inner side of the sleeve box, a limiting plate is arranged on one side of the sleeve box, a plurality of supporting rods are fixedly mounted between the limiting plate and the pressing block, and the supporting rods slidingly penetrate the sleeve box, one side of the pressing block is in a circular arc structure, and when the standard needle works, the circular arc structure of the pressing block abuts against the rotating side surface of the hinged seat to provide limiting and supporting for the hinged seat; a plurality of first springs are fixedly mounted between the inner side of the sleeve box and the pressing block, a pressing rod is mounted on the top of the sleeve box, a protrusion corresponding to the pressing rod is formed on the outer side of the connecting seat, and a second spring is mounted between the inner side of the sliding frame and the top of the sleeve box.

[0010] Further, the top of the rotating disc is mounted with an annular frame, the measuring instrument is mounted outside the annular frame, and the annular frame is rotatably mounted outside the mounting box.

[0011] Further, the sliding ring slidingly penetrating the sliding block is mounted between the two ends of the fixed block.

[0012] Further, the outer side of the sliding block is mounted with two limiting rods, and the outer side of the connecting seat is provided with an arc-shaped groove for limiting sliding of the limiting rods.

[0013] Further, the inner side of the synchronous belt is provided with an inner supporting frame, and the inner supporting frame is mounted on the inner side of the cleaning box.

[0014] Further, the bottom of the cleaning box is mounted with a collection box.

[0015] Further, the inner side of the supporting arm is mounted with a baffle.

[0016] Beneficial effects: the detection mechanism can exchange the positions of the two standard needles, make the detected standard needle away from the directly above of the asphalt sample, and make another standard needle aim at the above of the asphalt sample, so that the asphalt sample can be continuously detected, the standard needle can swing upward when the standard needle is away from the asphalt sample, the standard needle is prevented from being inserted into the asphalt sample, and the standard needle is convenient to clean, and the detection efficiency is improved.

[0017] The cleaning mechanism can clean the asphalt residues on the standard needle in the swinging state by the cleaning brushes on the two synchronous belts, and the two synchronous belts rotate in opposite directions to exchange the cleaning brushes, so that the standard needle can be continuously cleaned.

[0018] The present application can make the pressing block abut against the outside of the hinged seat when the pressing block is aligned with the outside of the hinged seat, provide limiting and supporting for the hinged seat, and prevent the standard needle from being inclined, thereby ensuring the accuracy of the standard needle penetration detection of asphalt. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used to interpret the specific embodiments of the present application and their descriptions, and do not constitute improper limitations to the present application. In the drawings: Figure 1 The overall structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 2 The support arm and mounting rod structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 3 The turntable and hinged seat structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 4 The standard needle and cleaning box structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 5 The sliding block and sliding ring structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 6 The cleaning brush and scraping brush structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 7 The sleeve box and sliding frame structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application; Figure 8 The pressing block and limiting plate structure schematic view of the modified asphalt penetration detection device for road and bridge construction according to the embodiment of the present application. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0021] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Embodiment one: please refer to Figures 1-8The utility model provides a kind of modified asphalt penetration detection device for road and bridge construction in the drawing, including control base 1 and fixedly installed installation rod 2 and material tank 3 on the top of control base 1, material tank 3 is used to place the asphalt sample to be detected, the top of installation rod 2 is fixedly installed with detection host 4, two measurement instruments 6 that are centrally symmetric distribution are provided in the inside of detection host 4, the bottom of measurement instrument 6 is provided with standard needle 7, standard needle 7 is inserted into the asphalt sample in material tank 3, and the penetration of asphalt sample is obtained by measurement instrument 6;It further includes: detection mechanism, for continuously detecting asphalt sample, detection mechanism is installed on the inside of detection host 4.

[0023] The detection mechanism comprises a rotating disc 8 arranged at the bottom of the detection host 4, the rotating disc 8 can exchange the positions of the two standard needles 7, the detection mechanism further comprises an electric telescopic rod 11 fixedly installed in the inside of the detection host 4, the bottom end of the electric telescopic rod 11 is fixedly installed with a mounting box 12, the inside of the mounting box 12 is fixedly installed with a first motor 13, and the output end of the first motor 13 is connected with the rotating disc 8, the electric telescopic rod 11 can push the mounting box 12 to move downwards, so that the first motor 13 in the mounting box 12 pushes the rotating disc 8 to move downwards, and the first motor 13 can drive the rotating disc 8 to rotate, the bottom of the measuring instrument 6 and the rotating disc 8 are fixedly installed with a connecting seat 14, the bottom end of the connecting seat 14 is rotatably installed with a rotating rod 15, the rotating rod 15 is fixedly installed with a hinged seat 16 between the two ends, the standard needle 7 is fixedly installed at the bottom of the hinged seat 16 for realizing the swinging of the standard needle 7 towards the outside, so that the rotating disc 8 can drive the two connecting seats 14 to drive the positions of the two measuring instruments 6 to be replaced, the connecting seat 14 drives the hinged seat 16 to rotate through the rotating rod 15, so that the hinged seat 16 drives the standard needle 7 to make a circular motion, the positions of the two standard needles 7 are replaced, the continuous detection of the asphalt sample is facilitated, the detection efficiency is improved, the outside of the rotating rod 15 is fixedly installed with a sliding block 17, the inside of the connecting seat 14 is arranged with an annular cavity for limiting the sliding of the sliding block 17, the inside of the annular cavity is fixedly installed with a fixed block 18, the sliding block 17 and the fixed block 18 are fixedly installed with an arc-shaped spring 19, the hinged seat 16 can only rotate towards the outside through the cooperation of the fixed block 18 and the sliding block 17 in the annular cavity (the initial state of the hinged seat 16 is vertical, and the hinged seat 16 can only rotate towards the outside), the two ends of the rotating rod 15 are fixedly installed with a first gear 20, the outside of the cleaning box 9 is fixedly installed with two mounting racks 21 which are symmetrically distributed, the outside of the mounting rack 21 is fixedly installed with a first toothed bar 22 and a plurality of second toothed bars 23 which are equidistantly distributed, and the length of the second toothed bar 23 is smaller than the length of the first toothed bar 22, when cleaning, the first gear 20 can engage with the first toothed bar 22 and the second toothed bar 23, so that the standard needle 7 swings left and right into the cleaning position of the cleaning mechanism;When the standard needle 7 is far away from the material placing tank 3 and close to the cleaning box 9, the first gear 20 at both ends of the rotating rod 15 can be respectively moved above the two mounting frames 21, the downwardly moving connecting seat 14 can drive the first gear 20 on the rotating rod 15 to be in contact with the first rack 22, the first rack 22 drives the first gear 20 to rotate, the first gear 20 can drive the rotating rod 15 to rotate, the rotating rod 15 drives the standard needle 7 to swing towards the cleaning box 9 through the hinged seat 16, and the rotating rod 15 drives the sliding block 17 to move along the inner side of the annular cavity, and the arc-shaped spring 19 is compressed, so that the sliding block 17 is reset by the elastic force of the arc-shaped spring 19 when the first gear 20 is far away from the first rack 22, and the first gear 20 is in contact with a plurality of second racks 23 in sequence along with the downward movement of the connecting seat 14, the second rack 23 cooperates with the arc-shaped spring 19 to make the rotating rod 15 reciprocate, and the standard needle 7 can be in a reciprocating swing state, so as to avoid the material placing tank 3 when the standard needle 7 moves downward, the top of the rotating disc 8 is fixedly installed with the annular frame 39, the measuring instrument 6 is fixedly installed on the outer side of the annular frame 39, and the annular frame 39 is rotatably installed on the outer side of the mounting box 12, so that the annular frame 39 provides support for the measuring instrument 6 and improves the stability of the rotating disc 8, the sliding ring 40 slidingly penetrating through the sliding block 17 is fixedly installed between both ends of the fixed block 18, so that the sliding block 17 can move along the outer side of the sliding ring 40, and the stability of the sliding block 17 is improved, the two limit rods 41 symmetrically distributed are fixedly installed on the outer side of the sliding block 17, and the arc-shaped groove for limiting sliding of the limit rod 41 is formed in the outer side of the connecting seat 14, so that the sliding block 17 can drive the limit rod 41 to move along the arc-shaped groove on the connecting seat 14 when the sliding block 17 moves, and the movement and rebound of the sliding block 17 are limited.

[0024] Example two: please refer to Figures 2-6, The cleaning mechanism in the drawing further comprises a cleaning box 9 fixedly installed outside the mounting rod 2, the cleaning box 9 can clean the standard needle 7, the cleaning mechanism further comprises two synchronous belts 24 symmetrically arranged inside the cleaning box 9, the inside of the synchronous belt 24 is provided with two rotating rollers 25 symmetrically distributed, and the rotating roller 25 is rotatably installed inside the cleaning box 9, so that the rotating roller 25 can drive the synchronous belt 24 to rotate and move when rotating, a plurality of cleaning brushes 26 are fixedly installed outside the synchronous belt 24, the cleaning brushes 26 on the two synchronous belts 24 are staggered, the standard needle 7 in the swinging state can be inserted between the two synchronous belts 24, the cleaning brushes 26 clean the pitch residues on the surface of the standard needle 7 by reciprocating swinging of the standard needle 7, the top of the cleaning box 9 is fixedly installed with a positioning frame 27, the top of the positioning frame 27 is fixedly installed with a second motor 28, the output end of the second motor 28 is fixedly connected with the top end of the adjacent rotating roller 25, the top end of the two rotating rollers 25 close to the positioning frame 27 is fixedly installed with a second gear 29, and the two second gears 29 are meshed with each other, so that the second motor 28 can drive the corresponding rotating roller 25 to rotate, the rotating roller 25 drives the other rotating roller 25 to rotate through the two second gears 29, so that the two synchronous belts 24 rotate and move in opposite directions, facilitating the cleaning brushes 26 to scrape the pitch residues on the standard needle 7, a plurality of scraping brushes 30 are fixedly installed inside the cleaning box 9, the cleaning brushes 26 in the moving state can be in contact with the scraping brushes 30, so that the scraping brushes 30 can scrape the pitch residues in the cleaning brushes 26, preventing the pitch residues from being lumped, the inside of the synchronous belt 24 is provided with an inner support frame 42, the inner support frame 42 is fixedly installed inside the cleaning box 9, so that the inner support frame 42 provides support for the inside of the synchronous belt 24, and the bottom of the cleaning box 9 is fixedly installed with a collecting box 43, facilitating the pitch residues cleaned by the cleaning brushes 26 to be stored.

[0025] Example three: please refer to Figures 3-8The embodiment further illustrates other embodiments. The pressing mechanism in the drawing includes a pressing block 10 arranged below the detection host 4, which can provide support for the standard needle 7. The pressing mechanism further includes a support arm 31 fixedly installed outside the detection host 4. The inner side of the support arm 31 is fixedly installed with two symmetrically distributed carriages 32. The two carriages 32 are slidingly installed with a sleeve box 33. The pressing block 10 is slidingly installed inside the sleeve box 33. The sleeve box 33 is provided with a limiting plate 34 on the side close to the support arm 31. A plurality of equidistantly distributed supporting rods 35 are fixedly installed between the limiting plate 34 and the pressing block 10, and the supporting rods 35 slidingly penetrate the sleeve box 33. The side of the pressing block 10 away from the supporting rods 35 is a circular arc structure. When the bottom of the hinged seat 16 is in contact with the pressing block 10, the hinged seat 16 can move along the circular arc surface of the pressing block 10. The hinged seat 16 pushes the pressing block 10 into the sleeve box 33. A plurality of equidistantly distributed first springs 36 are fixedly installed between the inner side of the sleeve box 33 and the pressing block 10. When the pressing block 10 moves, the first springs 36 can be compressed. When the pressing block 10 is aligned with the outer side of the hinged seat 16, the resilience of the first springs 36 can make the pressing block 10 abut against the outer side of the hinged seat 16, providing limiting and supporting for the hinged seat 16, preventing the standard needle 7 from being skewed, and ensuring the accuracy of the asphalt needle penetration detection. The top of the sleeve box 33 is fixedly installed with a pressing rod 37. The outer side of the connecting seat 14 is provided with a protrusion. When the protrusion on the connecting seat 14 is in contact with the pressing rod 37, the connecting seat 14 can push the sleeve box 33 to move downward, keeping the pressing block 10 aligned with the hinged seat 16. The inner side of the carriage 32 and the top of the sleeve box 33 are fixedly installed with a second spring 38. When the sleeve box 33 moves downward, the second spring 38 can be stretched. When the connecting seat 14 moves upward to reset, the resilience of the second spring 38 can make the sleeve box 33 reset upward. The inner side of the support arm 31 is fixedly installed with a baffle 5. When the sleeve box 33 moves downward, the limiting plate 34 can be in contact with the baffle 5, so that the baffle 5 provides support for the limiting plate 34, facilitating the pressing block 10 to abut against the hinged seat 16.

[0026] Working principle: first, the staff injects warm water into the material tank 3, and places the asphalt sample to be detected in the material tank 3, so that the asphalt sample is completely immersed in the water bath, then the staff controls the detection host 4 through the base 1 to control the electric telescopic rod 11, the electric telescopic rod 11 drives the installation box 12 to move downwards, the installation box 12 drives the rotating disc 8 to move downwards through the first motor 13, the rotating disc 8 drives the two connecting seats 14 to move downwards, the connecting seat 14 drives the hinged seat 16 to move downwards through the rotating rod 15, when the bottom of the hinged seat 16 is in contact with the pressing block 10, the bottom of the hinged seat 16 moves along the arc surface of the pressing block 10 and drives the pressing block 10 to move along the inside of the sleeve box 33, the pressing block 10 compresses the first spring 36, when the pressing block 10 is aligned with the outside of the hinged seat 16, the spring back force of the first spring 36 makes the pressing block 10 abut against the outside of the hinged seat 16, providing limiting and supporting for the hinged seat 16, at this time, the convex block of the connecting seat 14 is in contact with the pressing rod 37 on the top of the sleeve box 33, so that the connecting seat 14 drives the sleeve box 33 to move downwards, the sleeve box 33 moves between the two carriages 32 and compresses the second spring 38, so that the sleeve box 33 drives the pressing block 10 to move synchronously with the hinged seat 16, when the limiting plate 34 is in contact with the baffle 5, the baffle 5 can abut against the outside of the limiting plate 34, so that the pressing block 10 abuts against the hinged seat 16, keeping the hinged seat 16 in a vertical state, the standard needle 7 is inserted into the asphalt sample, the penetration of the asphalt sample is obtained through the measuring instrument 6, after single detection is completed, the electric telescopic rod 11 pulls the installation box 12 to reset upwards, so that the standard needle 7 inserted into the asphalt sample resets upwards, the convex block on the connecting seat 14 moves away from the pressing rod 37, the spring back force of the second spring 38 makes the sleeve box 33 reset upwards, when the rotating disc 8 resets, the first motor 13 drives the rotating disc 8 to rotate, the rotating disc 8 drives the two connecting seats 14 to rotate, so as to exchange the positions of the two standard needles 7, the electric telescopic rod 11 can push the exchanged standard needle 7 to the asphalt sample, realizing secondary detection of the asphalt sample, at the same time, the standard needle 7 away from the material tank 3 moves downwards, the first gear 20 at both ends of the rotating rod 15 above the standard needle 7 moves to the above of the two mounting frames 21 respectively, so that the connecting seat 14 moving downwards drives the first gear 20 on the rotating rod 15 to be in contact with the first rack 22, the first rack 22 drives the first gear 20 to rotate, the first gear 20 drives the rotating rod 15 to rotate, the rotating rod 15 drives the standard needle 7 to swing towards the cleaning box 9 through the hinged seat 16, so that the standard needle 7 is inserted between the two synchronous belts 24, the second motor 28 drives the corresponding rotating roller 25 to rotate, so that the rotating roller 25 drives another rotating roller 25 to rotate through the two second gears 29, so that the two rotating rollers 25 drive the corresponding synchronous belts 24 to rotate in opposite directions, the cleaning brushes 26 distributed alternately on the two synchronous belts 24 can clean the asphalt residues on the surface of the standard needle 7, at the same time, the rotating rod 15 drives the sliding block 17 to move along the inside of the annular cavity, the sliding block 17 compresses the arc spring 19, so that the first gear 20 moves away from the first rack 22,The spring 19 is used to reset the slider 17. With the downward movement of the connecting seat 14, the first gear 20 is in contact with a plurality of second gear racks 23 in turn, the second gear rack 23 cooperates with the arc spring 19 to make the rotating rod 15 reciprocate, and the standard needle 7 can be in a reciprocating swing state, and cooperates with the rotating cleaning brush 26 to quickly remove the residual asphalt, finally, the electric telescopic rod 11 pulls the rotating disc 8 to reset upward, the first motor 13 aligns the standard needle 7 cleaned with the sample tank 3 again, and another standard needle 7 enters the cleaning box 9 for cleaning, so that the continuous detection of the asphalt sample can be realized, the accuracy of the asphalt sample detection is ensured, and the detection efficiency of the asphalt sample is improved.

[0027] The workflow of the embodiment is as follows: 1. Preparation before detection: the asphalt sample is placed in the sample tank 3, warm water is injected to immerse the sample, and the device is started by controlling the base 1.

[0028] 2. First detection and pressing positioning: the electric telescopic rod 11 in the detection host 4 pushes the installation box 12 to move downward, the rotating disc 8 drives one of the standard needles 7 to align the sample. During the downward movement, the hinged seat 16 contacts the pressing block 10, the pressing block 10 is compressed after the first spring 36 is compressed, and then rebounds to tightly contact the hinged seat 16, at the same time, the connecting seat 14 convex block pushes the pressing rod 37 to make the sleeve box 33 move downward synchronously, the pressing block 10 keeps vertical support to the standard needle 7, and ensures that the standard needle 7 is stably inserted into the sample, and the penetrometer 6 records the penetration.

[0029] 3. Double-needle switching and continuous detection: after single detection, the electric telescopic rod 11 is reset, the rotating disc 8 is rotated by the first motor 13, and the positions of the two standard needles 7 are exchanged. The unused standard needle 7 is aligned with the sample, and the next detection is repeated by step 2 to realize continuous detection.

[0030] 4. Dirty needle swing and cleaning: at the same time, the dirty needle after detection moves to the cleaning box 9 above the rotating disc 8. The electric telescopic rod 11 pushes the connecting seat 14 to move downward, the first gear 20 at both ends of the rotating rod 15 is first engaged with the long first gear rack 22, and the standard needle 7 is swung into the cleaning box 9; then the first gear 20 is alternately engaged with the short second gear rack 23, and the standard needle 7 is swung back and forth in cooperation with the arc spring 19. The second motor 28 drives the two synchronous belts 24 to rotate in opposite directions through the second gear 29, the cleaning brush 26 brushes the needle body residue, the scraper 30 cleans the cleaning brush 26, and the residue falls into the collection box 43.

[0031] 5. Reset cycle: after cleaning, the electric telescopic rod 11 is reset, the arc spring 19 drives the standard needle 7 to return to normal, the rotating disc 8 rotates it back to the detection position, and waits for the next use, forming a cycle of detection-switching-cleaning.

[0032] Need to explain, the detection of the dirty needle in the horizontal plane in the implementation of the example after cleaning will be around the shaft of the rod 15 axis of the arc-shaped reciprocating swing, swing direction towards or away from the cleaning box 9, the specific process as follows: Swing power source: the swing of the standard needle 7 is driven by the rotation of the shaft 15 - the top end of the shaft 15 is rotatably mounted on the connecting seat 14, the bottom end is fixed by the hinge seat 16 The standard needle 7, when the first gear 20 at both ends of the shaft 15 engages with the rack 22, 23 on the outer mounting bracket 21 of the cleaning box 9, it will drive the shaft 15 to rotate around its axis, and then make the standard needle 7 with the hinge seat 16 arc swing.

[0033] Swing direction and characteristics: When the first gear 20 engages with the longer first rack 22, the shaft 15 rotates towards the cleaning box 9, and the standard needle 7 swings towards the inside of the cleaning box without moving up and down, until it is inserted into the cleaning area between the two synchronous belts 24.

[0034] When the first gear 20 alternately engages with multiple shorter second racks 23, in combination with the resilience of the arc-shaped spring 19, the shaft 15 reciprocates within a small range, and the standard needle 7 swings in the cleaning area "close to - away from" the cleaning brush 26, rather than moving in the up and down direction.

[0035] In summary, the reciprocating swing of the standard needle 7 is an arc swing in the horizontal plane, which accurately aligns the cleaning area and cooperates with the cleaning brush to achieve comprehensive cleaning.

[0036] The above only describes the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting the penetration of modified asphalt used in road and bridge construction, characterized in that, include: The control base (1) and the mounting rod (2) and the material tank (3) installed on the top of the control base (1) are included. The top of the mounting rod (2) is equipped with a detection host (4). The inside of the detection host (4) is equipped with two measuring instruments (6). The bottom of the measuring instruments (6) is equipped with a standard needle (7). The control base (1) also includes a detection mechanism for continuous detection of asphalt samples. The detection mechanism is installed inside the detection host (4). The detection mechanism includes a turntable (8) set at the bottom of the detection host (4). The turntable (8) can exchange the positions of the two standard needles (7). A cleaning mechanism is used to clean the asphalt residue on the surface of the standard needle (7). The cleaning mechanism is installed on the outside of the mounting rod (2). The cleaning mechanism includes a cleaning box (9) installed on the outside of the mounting rod (2). The cleaning box (9) can clean the standard needle (7). A pressure support mechanism is used to make the standard needle (7) insert smoothly and vertically into the asphalt sample. The pressure support mechanism is installed at the bottom of the detection host (4). The pressure support mechanism includes a pressure block (10) set below the detection host (4). The pressure block (10) can provide support for the standard needle (7).

2. The modified asphalt penetration testing device for road and bridge construction according to claim 1, characterized in that, The detection mechanism also includes an electric telescopic rod (11) installed inside the detection host (4). A mounting box (12) is installed at the bottom of the electric telescopic rod (11). A first motor (13) is installed inside the mounting box (12), and the output end of the first motor (13) is connected to a turntable (8). A connecting seat (14) is installed between the bottom of the measuring instrument (6) and the turntable (8). A rotating rod (15) is rotatably installed at the bottom of the connecting seat (14). A hinge seat (16) is fixedly installed between the two ends of the rotating rod (15). A standard needle (7) is installed at the bottom of the hinge seat (16) to allow the standard needle (7) to swing outwards. A slider (17) is fixedly installed on the outer side of the rotating rod (15). The connecting seat (14) has an annular cavity inside, and a fixing block (18) is installed on the inner side of the annular cavity. An arc spring (19) is installed between the slider (17) and the fixing block (18). A first gear (20) is fixedly installed at both ends of the rotating rod (15). Two mounting brackets (21) are fixedly installed on the outer side of the cleaning box (9). A first rack (22) and multiple second racks (23) are fixedly installed on the outer side of the mounting brackets (21), and the length of the second rack (23) is less than the length of the first rack (22). When cleaning, the first gear (20) can mesh with the first rack (22) and the second rack (23) to realize the left and right back and forth swing of the standard needle (7) to enter the cleaning position of the cleaning mechanism.

3. The modified asphalt penetration testing device for road and bridge construction according to claim 2, characterized in that, The cleaning mechanism also includes two synchronous belts (24) disposed inside the cleaning box (9). Two rotating rollers (25) are disposed inside the synchronous belts (24) and the rotating rollers (25) are rotatably mounted inside the cleaning box (9). Multiple cleaning brushes (26) are fixedly mounted on the outside of the synchronous belts (24). A positioning frame (27) is mounted on the top of the cleaning box (9). The top ends of the two rotating rollers (25) away from the turntable (8) extend to the inside of the positioning frame (27). A second motor (28) is mounted on the top of the positioning frame (27). The output end of the second motor (28) is fixedly connected to the top end of the adjacent rotating roller (25). A second gear (29) is fixedly mounted on the top end of the two rotating rollers (25) close to the positioning frame (27), and the two second gears (29) mesh with each other. Multiple scraping brushes (30) are fixedly mounted inside the cleaning box (9).

4. The modified asphalt penetration testing device for road and bridge construction according to claim 3, characterized in that, The pressure support mechanism also includes a support arm (31) installed on the outside of the detection host (4). Two slides (32) are fixedly installed on the inner side of the support arm (31). A sleeve (33) is slidably installed between the two slides (32). The pressure block (10) is slidably installed on the inner side of the sleeve (33). A limit plate (34) is provided on one side of the sleeve (33). Multiple support rods (35) are fixedly installed between the limit plate (34) and the pressure block (10). The support rods (35) slide through the sleeve (33). The pressure block (10) One side of the pressure block (10) is an arc-shaped structure. When the standard needle (7) is working, the arc-shaped structure of the pressure block (10) abuts against the rotating side of the hinge seat (16) to provide limit and support for the hinge seat (16). Multiple first springs (36) are fixedly installed between the inner side of the sleeve (33) and the pressure block (10). A pressure rod (37) is installed on the top of the sleeve (33). A protrusion corresponding to the pressure rod (37) is opened on the outer side of the connecting seat (14). A second spring (38) is installed between the inner side of the slide (32) and the top of the sleeve (33).

5. The modified asphalt penetration testing device for road and bridge construction according to claim 2, characterized in that, A ring frame (39) is mounted on the top of the turntable (8), the measuring instrument (6) is mounted on the outside of the ring frame (39), and the ring frame (39) is rotatably mounted on the outside of the mounting box (12).

6. The modified asphalt penetration testing device for road and bridge construction according to claim 2, characterized in that, A slip ring (40) is installed between the two ends of the fixed block (18) and slides through the slider (17).

7. The modified asphalt penetration testing device for road and bridge construction according to claim 2, characterized in that, Two limiting rods (41) are installed on the outside of the slider (17), and an arc-shaped groove is provided on the outside of the connecting seat (14) for the limiting rods (41) to slide in a limited manner.

8. The modified asphalt penetration testing device for road and bridge construction according to claim 3, characterized in that, An inner support frame (42) is provided on the inner side of the synchronous belt (24), and the inner support frame (42) is installed on the inner side of the cleaning box (9).

9. The modified asphalt penetration testing device for road and bridge construction according to claim 3, characterized in that, A collection box (43) is installed at the bottom of the cleaning box (9).

10. The modified asphalt penetration testing device for road and bridge construction according to claim 4, characterized in that, A baffle (5) is installed on the inner side of the support arm (31).

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