High-viscoelastic modified ultra-thin asphalt wearing layer testing device and high-viscoelastic modified ultra-thin asphalt wearing layer testing method

Abstract

The invention relates to the technical field of asphalt viscosity detection, in particular to a high-viscoelasticity modified ultra-thin asphalt wearing layer testing device and method.The high-viscoelasticity modified ultra-thin asphalt wearing layer testing device comprises a frame body, a bidirectional rotating base, a pressing mechanism, a contact switching mechanism, a plurality of asphalt containing bases, a rotating cleaning mechanism and a plurality of lifting detection mechanisms; automatic detection is carried out by utilizing the rising process of the asphalt placing base through the rising detection mechanism, the device can be applied to data detection and automatic recording in a narrow space, the extrusion frame can be automatically separated from the sliding plate during detection, resistance is prevented from being applied to the sliding plate, resistance is prevented from being applied to the asphalt placing base, in other words, the influence on detection data is avoided, and the detection efficiency is improved. And after the detection is completed, through automatic contact between the extrusion frame and the sliding plate, the risk that the sliding plate falls in the subsequent test process is avoided, and the sliding plate can be fixed at any height position.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt viscosity detection, and in particular to a device and method for testing a high-viscoelastic modified ultra-thin asphalt wear layer. Background Art

[0002] Asphalt is needed in highway construction, and the strength of the adhesion of the asphalt wear layer needs to be tested before the asphalt is used. Chinese patent application number CN202311075551.X Name: A test device for the adhesion of asphalt wear layer, which discloses that multiple tests are performed through multiple sets of detection mechanisms, and multiple sets of data are used to achieve better test results, and during the test, through the action of the auxiliary part, each set of data is rotated once after the test is completed to achieve a faster detection speed. However, the test device has the following disadvantages: first, during the test, each set of data can only be recorded by the experimenter through naked eye observation; second, when the asphalt is first laid, the excess asphalt is difficult to scrape off, which makes it difficult to lay evenly and affects the test structure. Third, it is impossible to clean the bottom of the extruded plate 2 that has been tested during the test, and it is difficult to clean it after the test is completed. The asphalt there will be dry and difficult to clean, and it is difficult for workers to use a scraper to fit and scrape it clean; fourth, it can only be tested one by one, and multiple groups cannot be tested at the same time.

[0003] Therefore, it is necessary to design a high-viscoelastic modified ultra-thin asphalt wear layer testing device that can automatically record data in a small space, facilitate asphalt paving, and automatically clean the asphalt that has been tested during the test, and can switch to test one by one or test multiple groups of detection mechanisms at the same time. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a high-viscoelastic modified ultra-thin asphalt wear layer testing device and method, which can automatically record data in a small space, facilitate the laying of asphalt, and automatically clean the asphalt that has been tested during the test, and can switch to test one by one or test multiple groups of detection mechanisms at the same time.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the present invention provides a high-viscoelastic modified ultra-thin asphalt wear layer testing device, including a frame, a two-way rotating seat, a pressing mechanism, a contact switching mechanism, multiple asphalt placing bases, a rotating cleaning mechanism and multiple lifting detection mechanisms, the two-way rotating seat is fixedly installed on the frame, and a right-handed circular plate that can rotate to the right and a left-handed circular plate that can rotate to the left are arranged on the two-way rotating seat, the left-handed circular plate and the right-handed circular plate are coaxially arranged, and the left-handed circular plate is located above the right-handed circular plate, the contact switching mechanism is fixedly installed on the left-handed circular plate, and the pressing mechanism is fixedly installed on the frame, and the pressing mechanism is used to push the contact switching mechanism downward. The switching mechanism is used to switch the contact between the contact switching mechanism and the asphalt on one or more asphalt placing bases. The asphalt placing base can be vertically slidably installed on the right-handed circular plate. The rotating cleaning mechanism can be vertically slidably installed on the right-handed circular plate. A plurality of scrapers are arranged on the rotating cleaning mechanism. A circular hole is opened in the middle of the scraper. The plurality of scrapers are sleeved on the outer edge of the asphalt placing base. When applying asphalt, the top of the scraper is flush with the top of the asphalt placing base. When detecting, the top of the scraper is flush with the bottom of the contact switching mechanism. The lifting detection mechanism is fixedly installed on the rotating cleaning mechanism. The lifting detection mechanism is used to detect the rising height of the asphalt placing base.

[0006] Preferably, the bidirectional rotating seat also includes a driving motor, a central shaft, a sleeve, an upper bevel gear, a lower bevel gear, a middle bevel gear and a rotating sleeve. The left-handed circular plate and the lower bevel gear are fixedly connected to the central shaft, the right-handed circular plate and the upper bevel gear are fixedly connected to the sleeve, the bottom of the central shaft is rotatably connected to the frame, the rotating sleeve is sleeved on the outer edge of the sleeve, the sleeve is rotatably connected to the rotating sleeve, the rotating sleeve is fixedly mounted on the frame, the middle bevel gear is located between the central shaft and the lower bevel gear and meshes with the two, the output end of the driving motor is fixedly connected to the middle bevel gear, and the driving motor is fixedly mounted on the frame.

[0007] Preferably, the rotating cleaning mechanism includes a connecting ring, a vertical rod, an extrusion plate 1, a locking nut 1, a block and multiple vertical plates, the top of the vertical plate is fixedly connected to the scraper, the inner edges of the multiple vertical plates are fitted with the outer edges of the right-hand circular plate, the connecting ring is fixedly connected to the bottoms of the multiple vertical plates, the lifting detection mechanism is fixedly installed on the vertical plate, the vertical rod is vertically fixedly installed on the connecting ring, a strip slide groove is opened in the middle of the vertical rod, the block is inserted in the strip slide groove, a screw hole is opened at the end of the block, the end of the locking nut 1 passes through the extrusion plate 1 and is meshed and installed on the block, a strip hole is opened in the middle of the extrusion plate 1 for the end of the locking nut 1 to pass through, one side of the extrusion plate 1 contacts the vertical plate, when the top of the scraper is flush with the bottom of the contact switching mechanism, the bottom of the block contacts the bottom of the strip slide groove, and when the top of the scraper is flush with the top of the asphalt placing base, the top of the block contacts the top of the strip slide groove.

[0008] Preferably, the lifting detection mechanism includes a slide rail, a slide plate and a magnetic strip. The slide rail is fixedly mounted on the vertical plate, the slide plate can be vertically slidably mounted in the slide rail, the magnetic strip is embedded in the vertical plate, one side of the magnetic strip is in contact with the slide plate, a contact block is fixedly mounted on the asphalt placing base, the contact block passes through the vertical plate and contacts the bottom of the slide plate, and a vertical avoidance groove is provided on the vertical plate for the contact block to pass through.

[0009] Preferably, the lifting detection mechanism also includes an extrusion frame, a guide column, a protrusion and a spring. The guide column is fixedly mounted on the vertical plate. The extrusion frame is slidably connected to the guide column. One side of the extrusion frame is in contact with the slide plate. The spring is used to apply an elastic force toward the slide plate to the extrusion frame. The push column is fixedly mounted on the top of the extrusion frame. The protrusion is fixedly arranged on the left-handed circular plate. The protrusion is located directly above the push column. When the push column contacts the protrusion, the extrusion frame is separated from the slide plate.

[0010] Preferably, the contact switching mechanism includes a limiting circular plate, a pushing plate and a plurality of squeezers, each squeezer includes a lifting spring, a sliding column, a limiting circular plate and a second squeezing plate, the sliding column can be vertically slidably installed on the left-handed circular plate, the second squeezing plate is fixedly installed on the bottom of the sliding column, the limiting circular plate is fixedly installed on the top of the sliding column, the lifting spring is used to apply an upward elastic force to the second squeezing plate, the bottom of the stud contacts the top of one of the limiting circular plates, the top of the stud is rotatably connected to the output end of the downward pressure mechanism, the pushing plate can be vertically slidably installed on the central axis, the stud is meshedly connected to the pushing plate, and a screw hole for meshing with the stud is opened on the pushing plate.

[0011] Preferably, each asphalt placing base includes a circular plate, a guide sleeve, a screw, a counterweight ring and two locking nuts. A plurality of guide holes are opened on the right-handed circular plate, the guide sleeve is inserted into the guide holes, the circular plate is fixedly mounted on the top of the guide sleeve, the contact block is fixedly mounted on the outer edge of the circular plate, the screw is inserted in the middle of the guide sleeve, and the top of the screw is fixedly connected to the circular plate, the counterweight ring is sleeved on the outer edge of the screw, and the two locking nuts are meshingly mounted on the screw, and the top of the two locking nuts is in contact with the bottom of the counterweight ring.

[0012] Preferably, the pressing mechanism is an electric push rod, and the output end of the electric push rod is rotatably connected to the top of the stud.

[0013] Preferably, a method for testing a high-viscoelastic modified ultra-thin asphalt wearing layer is characterized by comprising the following steps: Step 1: Rotate the bidirectional rotating seat so that the bumps and the push pins are interlaced, and then apply asphalt to the top of the circular plate; Step 2: Push the rotary cleaning mechanism upward, the top of the scraper is coplanar with the bottom of the second extrusion plate, and then the two-way rotating seat rotates, so that the protrusion contacts the push column, and the extrusion frame is separated from the slide plate; Step 3: According to the detection requirements, the stud can be switched to contact with a limit circular plate, or the push plate can be simultaneously contacted with multiple limit circular plates.

[0014] Step 4: Push downward through the pressing mechanism, so that the stud or the pushing plate pushes a limiting circular plate or multiple limiting circular plates to move downward in the same direction, so that the extrusion plate 2 is in contact with the asphalt on the top of the circular plate, and then retracted upward through the output end of the pressing mechanism. Due to the viscosity of the asphalt, the circular plate will be pulled upward. The separation height between the circular plate and the extrusion plate 2 represents the viscosity of the asphalt; Step 5: When the circular plate moves upward, the contact block will push the sliding plate to move upward at the same time, and the rising height of the circular plate can be recorded by the rising height of the sliding plate; Step 6: The bidirectional rotating seat rotates so that the top of the scraper and the bottom of the second extrusion plate are sheared, and the asphalt at the bottom of the second extrusion plate will be hung and dropped, and the falling asphalt will fall to the top of the circular plate; Step 7: While the bidirectional rotating seat is rotating, the push column gradually separates from the protrusion. When the separation is completed, the slide plate will be squeezed, and then the next test can be carried out, repeating the process of steps 4 to 7.

[0015] The beneficial effects of the present invention are: the high-viscoelastic modified ultra-thin asphalt wear layer testing device can automatically detect by utilizing the rising process of the asphalt placing base through the lifting detection mechanism, and can be applied to data detection and automatic recording in a narrow space, and during the detection, the extrusion frame can automatically separate from the slide plate to avoid applying resistance to the slide plate, avoid applying resistance to the asphalt placing base, that is, avoid affecting the detection data, and after the detection is completed, the extrusion frame and the slide plate automatically conflict with each other to avoid the risk of the slide plate falling during the subsequent test process, and the slide plate can be fixed at any height position.

[0016] And through the bidirectional rotating seat, the left-handed circular plate and the right-handed circular plate can be driven to rotate, so that the scraper and the extrusion plate 2 rotate alternately, and the asphalt on the extrusion plate 2 can be automatically cleaned. When paving the asphalt, if there is a lot of asphalt applied, it can be directly scraped onto the scraper, so that the asphalt can be spread evenly.

[0017] And through the switching action of the contact switching mechanism, the pressing mechanism can push one or more limit circular plates at the same time, that is, it can switch to detect one by one or test multiple groups of detection mechanisms at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is the front view of the present invention.

[0021] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0022] Figure 4 It is a cross-sectional view of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structural decomposition of the rotating cleaning mechanism.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structural decomposition of the elevation detection mechanism.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure decomposition of the contact switching mechanism.

[0026] Figure 8 Schematic diagram of the installation status of the base for asphalt placement.

[0027] Fig. 9 Schematic diagram of the three-dimensional structure of the base for asphalt placement.

[0028] Explanation of reference numerals: 1, frame; 2, bidirectional rotating seat; 2a, left-handed circular plate; 2b, right-handed circular plate; 2c, middle shaft; 2d, sleeve; 2e, upper bevel gear; 2f, lower bevel gear; 2h, middle bevel gear; 2j, rotating sleeve; 3, pressing mechanism; 4, contact switching mechanism; 4a, lifting spring; 4b, sliding column; 4c, limiting circular plate; 4d, extrusion plate 2; 4e, stud; 4f, pushing plate; 5, asphalt placing base; 5a, contact Block; 5b, round plate; 5c, guide sleeve; 5d, screw; 5e, counterweight ring; 5f, locking nut 2; 6, rotating cleaning mechanism; 6a, scraper; 6b, vertical plate; 6c, connecting ring; 6d, vertical rod; 6e, extrusion plate 1; 6f, locking nut 1; 6h, clamping block; 7, lifting detection mechanism; 7a, slide rail; 7b, slide plate; 7c, extrusion frame; 7c1, push column; 7d, guide column; 7e, bump; 7f, magnetic strip; 7h, spring. DETAILED DESCRIPTION

[0029] 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.

[0030] Embodiment: The present invention provides a high-viscoelastic modified ultra-thin asphalt wear layer testing device, such as Figure 1-4As shown, it includes a frame 1, a two-way rotating seat 2, a pressing mechanism 3, a contact switching mechanism 4, a plurality of asphalt placing bases 5, a rotating cleaning mechanism 6 and a plurality of lifting detection mechanisms 7. The two-way rotating seat 2 is fixedly installed on the frame 1. A right-handed circular plate 2b that can rotate to the right and a left-handed circular plate 2a that can rotate to the left are arranged on the two-way rotating seat 2. The left-handed circular plate 2a is coaxially arranged with the right-handed circular plate 2b. The left-handed circular plate 2a is located above the right-handed circular plate 2b. The contact switching mechanism 4 is fixedly installed on the left-handed circular plate 2a. The pressing mechanism 3 is fixedly installed on the frame 1. The pressing mechanism 3 is used to push the contact switching mechanism 4 downward so that the contact switching mechanism 4 can be The contact switching mechanism 4 contacts the asphalt on the asphalt placing base 5. The contact switching mechanism 4 is used to switch the contact switching mechanism 4 to contact the asphalt on one or more asphalt placing bases 5. The asphalt placing base 5 can be installed on the right-handed circular plate 2b in a vertically slidable manner. When the viscosity of the high-viscoelastic modified ultra-thin asphalt wear layer needs to be tested, the worker first applies asphalt on the top of multiple asphalt placing bases 5, then adjusts the contact switching mechanism 4, and then switches the pressing mechanism 3 to press downward, the contact switching mechanism 4 contacts multiple asphalt placing bases 5 at the same time or the contact switching mechanism 4 contacts multiple asphalt placing bases 5 one by one. When testing one by one, multiple bidirectional rotating seats 2 need to be switched, and the bidirectional rotating seat 2 drives the right-handed circular plate 2b to rotate, so that multiple asphalt placing bases 5 are switched, and the asphalt placing base 5 contacted by the contact switching mechanism 4 is changed. The contact switching mechanism 4 is pushed downward by the working end of the pressing mechanism 3, so that the contact switching mechanism 4 contacts the asphalt placing base 5, and then the working end of the pressing mechanism 3 is retracted upward, so that the contact switching mechanism 4 can be pulled upward, and the asphalt placing base 5 will be driven to slide vertically upward by the viscosity of the asphalt, and the asphalt placing base 5 will be gradually separated from the contact switching mechanism 4 by the gravity of the asphalt placing base 5, and the height of the asphalt placing base 5 during separation represents the viscosity of the asphalt. The rotary cleaning mechanism 6 can be installed on the right-handed circular plate 2b in a vertically sliding manner, and a plurality of scrapers 6a are arranged on the rotary cleaning mechanism 6, and a circular hole is opened in the middle of the scraper 6a, and the plurality of scrapers 6a are sleeved on the outer edge of the asphalt placing base 5. When applying asphalt, the top of the scraper 6a is flush with the top of the asphalt placing base 5, so that if more asphalt is applied, it can be directly scraped on the scraper 6a, so that the asphalt paving effect is better. After the application is completed, the scraper 6a can be lifted upward and cleaned by a scraper, which is convenient to clean. During inspection, the top of the scraper 6a is flush with the bottom of the contact switching mechanism 4. Since the rotation directions of the left-handed circular plate 2a and the right-handed circular plate 2b are different, that is, the rotation direction of the scraper 6a is different from the rotation direction of the contact switching mechanism 4, when the bidirectional rotating seat 2 is working, the scraper 6a will form a shear with the bottom of the contact switching mechanism 4, and the asphalt will fall to the upper surface of the asphalt placement base 5 during shearing, and the bottom of the contact switching mechanism 4 will be cleaned at the same time, which can be cleaned quickly and avoid the difficulty of subsequent cleaning.The elevation detection mechanism 7 is fixedly mounted on the rotary cleaning mechanism 6 , and the elevation detection mechanism 7 is used to detect the elevation height of the asphalt placement base 5 .

[0031] In order to realize that the left-handed circular plate 2a and the right-handed circular plate 2b can rotate in both directions and keep the rotation angles consistent, for this purpose, Figure 4 As shown, the bidirectional rotating seat 2 also includes a driving motor, a central axis 2c, a sleeve 2d, an upper bevel gear 2e, a lower bevel gear 2f, a central bevel gear 2h and a rotating sleeve 2j. The left-handed circular plate 2a and the lower bevel gear 2f are both fixedly connected to the central axis 2c, the right-handed circular plate 2b and the upper bevel gear 2e are both fixedly connected to the sleeve 2d, the bottom of the central axis 2c is rotatably connected to the frame 1, the rotating sleeve 2j is sleeved on the outer edge of the sleeve 2d, the sleeve 2d is rotatably connected to the rotating sleeve 2j, the rotating sleeve 2j is fixedly mounted on the frame 1, the central bevel gear 2h is located between the central axis 2c and the lower bevel gear 2f and meshes with the two, the output end of the driving motor is fixedly connected to the central bevel gear 2h, and the driving motor is fixedly mounted on the frame 1. By driving the middle bevel gear 2h to rotate through the driving motor, the upper bevel gear 2e and the lower bevel gear 2f can be made to rotate bidirectionally, that is, through the connection between the sleeve 2d and the middle shaft 2c, the left-handed circular plate 2a and the right-handed circular plate 2b can be made to rotate bidirectionally, and the left-handed circular plate 2a and the right-handed circular plate 2b can be made to be coaxial, and the rotation angles of the left-handed circular plate 2a and the right-handed circular plate 2b are the same.

[0032] In order to make the top of the scraper 6a flush with the asphalt placing base 5, and the top of the scraper 6a can also be flush with the bottom of the contact switching mechanism 4, for this purpose, as shown in FIG. Figure 3As shown, the rotary cleaning mechanism 6 includes a connecting ring 6c, a vertical rod 6d, an extrusion plate 6e, a locking nut 6f, a block 6h and a plurality of vertical plates 6b, the top of the vertical plate 6b is fixedly connected to the scraper 6a, the inner edges of the plurality of vertical plates 6b are fitted with the outer edges of the right-handed circular plate 2b, the connecting ring 6c is fixedly connected to the bottoms of the plurality of vertical plates 6b, the lifting detection mechanism 7 is fixedly installed on the vertical plate 6b, the vertical rod 6d is vertically fixedly installed on the connecting ring 6c, a strip slide groove is opened in the middle of the vertical rod 6d, and the block 6h is inserted in the strip slide groove In the embodiment, a screw hole is provided at the end of the block 6h, and the end of the locking nut 6f is meshed and installed on the block 6h through the extrusion plate 6e. A strip hole is provided in the middle of the extrusion plate 6e for the end of the locking nut 6f to pass through. One side of the extrusion plate 6e contacts the vertical plate 6b. When the top of the scraper 6a is flush with the bottom of the contact switching mechanism 4, the bottom of the block 6h contacts the bottom of the strip chute. When the top of the scraper 6a is flush with the top of the asphalt placing base 5, the top of the block 6h contacts the top of the strip chute. By pushing the vertical plate 6b upward, the scraper 6a is driven to move upward. The block 6h slides in the strip chute of the vertical plate 6b, and the lifting position of the scraper 6a is positioned. When the scraper 6a rises or falls to the target position, the locking nut 6f can be rotated to make the extrusion plate 6e contact the vertical plate 6b, so as to fix the vertical plate 6b.

[0033] It should be noted that the elevated detection mechanism 7 is installed on the rotating cleaning mechanism 6. When the rotating cleaning mechanism 6 rises, the position of the elevated detection mechanism 7 will change accordingly, and the above problem needs to be solved. In addition, the installation position is relatively close, and the detection structure cannot be large. At the same time, it is necessary to use multiple asphalt placement bases 5 to be able to perform automatic detection after rising. For this reason, Figure 3 and Figure 6As shown, the lifting detection mechanism 7 includes a slide rail 7a, a slide plate 7b and a magnetic strip 7f. The slide rail 7a is fixedly mounted on the vertical plate 6b. The slide plate 7b can be vertically slidably mounted in the slide rail 7a. The magnetic strip 7f is embedded in the vertical plate 6b. One side of the magnetic strip 7f contacts the slide plate 7b. A contact block 5a is fixedly arranged on the asphalt placing base 5. The contact block 5a passes through the vertical plate 6b and contacts the bottom of the slide plate 7b. The vertical plate 6b is provided with a vertical avoidance groove for the contact block 5a to pass through. When the rotary cleaning mechanism 6 rises, the vertical plate 6b will drive the slide rail 7a and the magnetic strip 7f to move upward. After the rotary cleaning mechanism 6 is completely raised, the slide plate 7b is pushed downward to contact the top of the contact block 5a. Then the detection process is started. When the asphalt placing base 5 is pulled upward by the bonding effect of the asphalt, the contact block 5a will move upward, so that the contact block 5a pushes the slide plate 7b to slide upward along the slide rail 7a. When the asphalt is separated from the bonding, the asphalt placing base 5 will drive the contact block 5a to slide downward by gravity. At this time, the height position of the slide plate 7b represents the viscosity of the asphalt. That is, the installation of the lifting detection mechanism 7 can be realized in a small space, and the asphalt placing base 5 can be automatically detected by the rising process. After the rotating cleaning mechanism 6 rises, the position of the lifting detection mechanism 7 will change accordingly, and the lifting detection mechanism 7 can start the detection.

[0034] When multiple asphalt placing bases 5 fall down, they will collide with the right-handed circular plate 2b, and multiple collisions may cause the slide plate 7b to vibrate downward. When the asphalt placing base 5 directly below the slide plate 7b falls down during the inspection, there is no need to worry, because if the slide plate 7b falls slightly, the inspector can immediately push it up to reset it. If it rotates, it is not convenient for the inspector to see it, and it is impossible to make corrections and adjustments, which will affect the final inspection effect. For this reason, if Figure 1 and Figure 6As shown, the lifting detection mechanism 7 also includes a squeeze frame 7c, a guide column 7d, a bump 7e and a spring 7h, wherein the guide column 7d is fixedly mounted on the vertical plate 6b, the squeeze frame 7c is slidably connected to the guide column 7d, one side of the squeeze frame 7c contacts the slide plate 7b, and the spring 7h is used to apply an elastic force to the squeeze frame 7c toward the slide plate 7b, wherein a baffle is provided at the end of the guide column 7d, the spring 7h is sleeved on the guide column 7d, and the two ends of the spring 7h contact the squeeze frame 7c and the baffle respectively. The push column 7c1 is fixedly mounted on the top of the squeeze frame 7c, and the bump 7e is fixedly arranged on the left-handed circular plate 2a, and the bump 7e is located directly above the push column 7c1, and when the push column 7c1 contacts the bump 7e, the squeeze frame 7c is separated from the slide plate 7b. Before pushing the rotary cleaning mechanism 6 upward, first control the bidirectional rotating seat 2 so that the push column 7c1 and the protrusion 7e are interlaced, and then push the rotary cleaning mechanism 6 upward. Finally, control the bidirectional rotating seat 2 so that the push column 7c1 and the protrusion 7e are in conflict, so that the push column 7c1 pushes the spring 7h to be compressed, and at the same time, the extrusion frame 7c is separated from the slide plate 7b to avoid applying resistance to the slide plate 7b. By avoiding an increase in the resistance of the slide plate 7b, it is avoided that resistance is applied to the asphalt placement base 5, that is, the influence on the detection data is avoided.

[0035] In order to be able to switch the contact switching mechanism 4 to contact with the asphalt on one or more asphalt placing bases 5, for this purpose, as shown in FIG. Figure 7 As shown, the contact switching mechanism 4 includes a limiting circular plate 4c, a pushing plate 4f and a plurality of squeezers, each squeezer includes a lifting spring 4a, a sliding column 4b, a limiting circular plate 4c and a squeezing plate 2 4d, the sliding column 4b is vertically slidably mounted on the left-handed circular plate 2a, the squeezing plate 2 4d is fixedly mounted on the bottom of the sliding column 4b, the limiting circular plate 4c is fixedly mounted on the top of the sliding column 4b, the lifting spring 4a is used to apply an upward elastic force to the squeezing plate 2 4d, and the lifting spring 4a Sleeved on the sliding column 4b, the two ends of the lifting spring 4a are respectively in contact with the left-handed circular plate 2a and the limiting circular plate 4c, the bottom of the stud 4e is in contact with the top of one of the limiting circular plates 4c, and the top of the stud 4e is rotatably connected to the output end of the pressing mechanism 3, that is, the stud 4e can rotate, and the push plate 4f can be installed on the central axis 2c in a vertical sliding manner. The stud 4e is meshed and connected with the push plate 4f, and a screw hole for meshing and connecting with the stud 4e is provided on the push plate 4f. When it is necessary to switch the contact switching mechanism 4 to contact an asphalt placing base 5, the bottom of the stud 4e passes through the bottom of the push plate 4f, such as Figure 7 In the state shown, when the pressing mechanism 3 is pushed downward, the stud 4e will be pushed downward, so that the stud 4e pushes the sliding column 4b to move downward. When the pressing mechanism 3 is pushed downward to the final position, the bottom of the pushing plate 4f will contact the top of the asphalt placing base 5, and at this position, the pushing plate 4f will not contact other limiting circular plates 4c, that is, the contact switching mechanism 4 is in contact with an asphalt placing base 5.

[0036] When it is necessary to switch the contact switching mechanism 4 to contact multiple asphalt placing bases 5 at the same time, the push plate 4f is lowered by rotating the stud 4e. When the top of the push plate 4f contacts the top of the limiting circular plate 4c, at this time, when the pressing mechanism 3 pushes downward, it will push the stud 4e to move downward, so that the stud 4e drives the push plate 4f to move downward, that is, the push plate 4f pushes multiple extrusion plates 4d to move downward at the same time, that is, multiple extrusion plates 4d are in contact with the tops of multiple asphalt placing bases 5 at the same time, that is, the contact switching mechanism 4 is in contact with multiple asphalt placing bases 5 at the same time.

[0037] Among them, in the above-mentioned detection process, when the sliding column 4b is pushed downward, the lifting spring 4a will be compressed, and in the process of the stud 4e rising, the elastic force of the lifting spring 4a will pull the extrusion plate 4d upward, that is, drive the asphalt placing base 5 to move upward through the asphalt, that is, realize the viscosity detection of the asphalt.

[0038] In order to enable the asphalt placing base 5 to slide vertically on the right-handed circular plate 2b, as shown in FIG. Figure 8 and Fig. 9 As shown, each asphalt placing base 5 comprises a circular plate 5b, a guide sleeve 5c, a screw rod 5d, a counterweight ring 5e and a locking nut 5f. A plurality of guide holes are provided on the right-handed circular plate 2b. The guide sleeve 5c is inserted into the guide hole. The circular plate 5b is fixedly mounted on the top of the guide sleeve 5c. The contact block 5a is fixedly mounted on the outer edge of the circular plate 5b. The screw rod 5d is inserted in the middle of the guide sleeve 5c, and the top of the screw rod 5d is fixedly connected to the circular plate 5b. The counterweight ring 5e is sleeved on the outer edge of the screw rod 5d. The locking nut 5f is meshed and mounted on the screw rod 5d. The top of the locking nut 5f is in conflict with the bottom of the counterweight ring 5e. The top of the circular plate 5b is used to apply asphalt. When the circular plate 5b is pulled upward, the guide sleeve 5c will slide along the guide hole on the right-handed circular plate 2b. Since the viscosity of various asphalts is different and the space between the left-handed circular plate 2a and the right-handed circular plate 2b is limited, in order to detect more types of asphalt, it is necessary to increase the number of counterweight rings 5e. When the number of counterweight rings 5e increases, the separation height will be lower, so that more types of detection can be performed in a limited space.

[0039] The pressing mechanism 3 is an electric push rod, and the output end of the electric push rod is rotatably connected to the top of the stud 4e. The pressing mechanism 3 is fixedly installed on the top of the frame 1.

[0040] A method for testing a high-viscoelastic modified ultra-thin asphalt wearing layer comprises the following steps: Step 1: Rotate the bidirectional rotating seat 2 so that the protrusions 7e and the push pins 7c1 are interlaced, and then apply asphalt to the top of the circular plate 5b; Step 2: Push the rotary cleaning mechanism 6 upward, the top of the scraper 6a is coplanar with the bottom of the second extrusion plate 4d, and then the two-way rotating seat 2 rotates, so that the protrusion 7e contacts the push column 7c1, and the extrusion frame 7c is separated from the slide plate 7b; Step 3: According to the detection requirements, the stud 4e can be switched to contact with one limiting circular plate 4c, or the push plate 4f can be pushed to contact with multiple limiting circular plates 4c at the same time.

[0041] Step 4: Push downward through the pressing mechanism 3, so that the stud 4e or the pushing plate 4f pushes a limiting circular plate 4c or multiple limiting circular plates 4c to move downward in the same direction, so that the extrusion plate 2 4d is in contact with the asphalt on the top of the circular plate 5b, and then the output end of the pressing mechanism 3 is retracted upward. Due to the viscosity of the asphalt, the circular plate 5b is pulled upward. The separation height between the circular plate 5b and the extrusion plate 2 4d represents the viscosity of the asphalt; Step 5: When the circular plate 5b moves upward, the contact block 5a pushes the sliding plate 7b to move upward at the same time, and the rising height of the circular plate 5b can be recorded by the rising height of the sliding plate 7b; Step 6: The bidirectional rotating seat 2 rotates so that the top of the scraper 6a is sheared with the bottom of the second extrusion plate 4d, and the asphalt at the bottom of the second extrusion plate 4d will be hung and dropped, and the falling asphalt will fall to the top of the circular plate 5b; Step 7: While the bidirectional rotating seat 2 is rotating, the push column 7c1 gradually separates from the protrusion 7e. When the separation is completed, 7c will squeeze the slide plate 7b, and then the next detection can be carried out, repeating the process of steps 4 to 7.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-viscoelastic modified ultra-thin asphalt wear layer testing device, characterized in that: The invention comprises a frame (1), a bidirectional rotating seat (2), a pressing mechanism (3), a contact switching mechanism (4), a plurality of asphalt placing bases (5), a rotating cleaning mechanism (6) and a plurality of lifting detection mechanisms (7), wherein the bidirectional rotating seat (2) is fixedly mounted on the frame (1), a right-handed circular plate (2b) capable of rotating rightward and a left-handed circular plate (2a) capable of rotating leftward are arranged on the bidirectional rotating seat (2), the left-handed circular plate (2a) and the right-handed circular plate (2b) are coaxially arranged, the left-handed circular plate (2a) is located above the right-handed circular plate (2b), the contact switching mechanism (4) is fixedly mounted on the left-handed circular plate (2a), the pressing mechanism (3) is fixedly mounted on the frame (1), the pressing mechanism (3) is used to push the contact switching mechanism (4) downward, and the contact switching mechanism (4) is used to switch the contact switching mechanism (4) with An asphalt placing base (5) or asphalt on multiple asphalt placing bases (5) are in contact. The asphalt placing base (5) can be mounted on a right-handed circular plate (2b) in a vertically slidable manner. A rotary cleaning mechanism (6) can be mounted on the right-handed circular plate (2b) in a vertically slidable manner. Multiple scrapers (6a) are provided on the rotary cleaning mechanism (6). A circular hole is provided in the middle of the scraper (6a). The multiple scrapers (6a) are sleeved on the outer edge of the asphalt placing base (5). When applying asphalt, the top of the scraper (6a) is flush with the top of the asphalt placing base (5). When detecting, the top of the scraper (6a) is flush with the bottom of the contact switching mechanism (4). A lifting detection mechanism (7) is fixedly mounted on the rotary cleaning mechanism (6). The lifting detection mechanism (7) is used to detect the rising height of the asphalt placing base (5).

2. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 1, characterized in that: The bidirectional rotating seat (2) further comprises a driving motor, a central shaft (2c), a sleeve (2d), an upper bevel gear (2e), a lower bevel gear (2f), a middle bevel gear (2h) and a rotating sleeve (2j); the left-handed circular plate (2a) and the lower bevel gear (2f) are both fixedly connected to the central shaft (2c); the right-handed circular plate (2b) and the upper bevel gear (2e) are both fixedly connected to the sleeve (2d); the bottom of the central shaft (2c) is rotationally connected to the frame (1); the rotating sleeve (2j) is sleeved on the outer edge of the sleeve (2d); the sleeve (2d) is rotationally connected to the rotating sleeve (2j); the rotating sleeve (2j) is fixedly mounted on the frame (1); the middle bevel gear (2h) is located between the central shaft (2c) and the lower bevel gear (2f) and meshes with the two; the output end of the driving motor is fixedly connected to the middle bevel gear (2h); and the driving motor is fixedly mounted on the frame (1).

3. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 2, characterized in that: The rotary cleaning mechanism (6) comprises a connecting ring (6c), a vertical rod (6d), an extrusion plate (6e), a locking nut (6f), a clamping block (6h) and a plurality of vertical plates (6b); the top of the vertical plate (6b) is fixedly connected to the scraper (6a); the inner edges of the plurality of vertical plates (6b) are in contact with the outer edges of the right-handed circular plate (2b); the connecting ring (6c) is fixedly connected to the bottoms of the plurality of vertical plates (6b); the lifting detection mechanism (7) is fixedly mounted on the vertical plate (6b); the vertical rod (6d) is vertically fixedly mounted on the connecting ring (6c); a strip-shaped slide groove is provided in the middle of the vertical rod (6d); and the clamping block (6h) is inserted in the In the strip chute, a screw hole is provided at the end of the block (6h), and the end of the locking nut (6f) passes through the extrusion plate (6e) to be meshed and installed on the block (6h). A strip hole is provided in the middle of the extrusion plate (6e) for the end of the locking nut (6f) to pass through. One side of the extrusion plate (6e) contacts the vertical plate (6b). When the top of the scraper (6a) is flush with the bottom of the contact switching mechanism (4), the bottom of the block (6h) contacts the bottom of the strip chute. When the top of the scraper (6a) is flush with the top of the asphalt placing base (5), the top of the block (6h) contacts the top of the strip chute.

4. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 3, characterized in that: The lifting detection mechanism (7) comprises a slide rail (7a), a slide plate (7b) and a magnetic strip (7f); the slide rail (7a) is fixedly mounted on the vertical plate (6b); the slide plate (7b) is vertically slidably mounted in the slide rail (7a); the magnetic strip (7f) is embedded in the vertical plate (6b); one side of the magnetic strip (7f) contacts the slide plate (7b); a contact block (5a) is fixedly mounted on the asphalt placement base (5); the contact block (5a) passes through the vertical plate (6b) and contacts the bottom of the slide plate (7b); and a vertical avoidance groove for the contact block (5a) to pass through is provided on the vertical plate (6b).

5. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 4, characterized in that: The lifting detection mechanism (7) also includes an extrusion frame (7c), a guide column (7d), a protrusion (7e) and a spring (7h). The guide column (7d) is fixedly mounted on the vertical plate (6b). The extrusion frame (7c) is slidably connected to the guide column (7d). One side of the extrusion frame (7c) contacts the slide plate (7b). The spring (7h) is used to apply an elastic force to the extrusion frame (7c) toward the slide plate (7b). The push column (7c1) is fixedly mounted on the top of the extrusion frame (7c). The protrusion (7e) is fixedly arranged on the left-handed circular plate (2a). The protrusion (7e) is located directly above the push column (7c1). When the push column (7c1) contacts the protrusion (7e), the extrusion frame (7c) is separated from the slide plate (7b).

6. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 5, characterized in that: The contact switching mechanism (4) comprises a limiting circular plate (4c), a pushing plate (4f) and a plurality of squeezers, each squeezer comprising a lifting spring (4a), a sliding column (4b), a limiting circular plate (4c) and a second squeezing plate (4d), the sliding column (4b) being mounted on the left-handed circular plate (2a) in a manner capable of vertical sliding, the second squeezing plate (4d) being fixedly mounted on the bottom of the sliding column (4b), the limiting circular plate (4c) being fixedly mounted on the top of the sliding column (4b), and the lifting spring (4a). The spring (4a) is used to apply an upward elastic force to the second extrusion plate (4d); the bottom of the stud (4e) contacts the top of one of the limiting circular plates (4c); the top of the stud (4e) is rotatably connected to the output end of the pressing mechanism (3); the push plate (4f) is vertically slidably mounted on the central axis (2c); the stud (4e) is meshedly connected to the push plate (4f); and a screw hole for meshing with the stud (4e) is provided on the push plate (4f).

7. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 6, characterized in that: Each asphalt placing base (5) comprises a circular plate (5b), a guide sleeve (5c), a screw rod (5d), a counterweight ring (5e) and a second locking nut (5f). A plurality of guide holes are opened on the right-handed circular plate (2b). The guide sleeve (5c) is inserted into the guide hole. The circular plate (5b) is fixedly installed on the top of the guide sleeve (5c). The contact block (5a) is fixedly installed on the outer edge of the circular plate (5b). The screw rod (5d) is inserted in the middle of the guide sleeve (5c), and the top of the screw rod (5d) is fixedly connected to the circular plate (5b). The counterweight ring (5e) is sleeved on the outer edge of the screw rod (5d). The second locking nut (5f) is meshed and installed on the screw rod (5d). The top of the second locking nut (5f) abuts against the bottom of the counterweight ring (5e).

8. A high-viscoelastic modified ultra-thin asphalt wearing layer testing device as claimed in claim 7, characterized in that: The pressing mechanism (3) is an electric push rod, and the output end of the electric push rod is rotatably connected to the top of the stud (4e).

9. A method for testing a high-viscoelastic modified ultra-thin asphalt wearing layer according to claim 8, characterized in that: The following steps are involved: Step 1: Rotate the bidirectional rotating seat (2) so that the protrusions (7e) and the push pins (7c1) are interlaced, and then apply asphalt to the top of the circular plate (5b); Step 2: Push the rotary cleaning mechanism (6) upward, so that the top of the scraper (6a) is coplanar with the bottom of the second extrusion plate (4d), and then the bidirectional rotating seat (2) is rotated so that the protrusion (7e) contacts the push column (7c1), and the extrusion frame (7c) is separated from the slide plate (7b); Step 3: According to the detection requirements, the stud (4e) can be switched to contact with a limiting circular plate (4c), or the push plate (4f) can be simultaneously contacted with multiple limiting circular plates (4c); Step 4: Push downward through the pressing mechanism (3), so that the stud (4e) or the pushing plate (4f) pushes a limiting circular plate (4c) or multiple limiting circular plates (4c) to move downward in the same direction, so that the extrusion plate 2 (4d) is in contact with the asphalt on the top of the circular plate (5b) by extrusion, and then the output end of the pressing mechanism (3) is retracted upward, and the viscosity of the asphalt pulls the circular plate (5b) upward. The separation height between the circular plate (5b) and the extrusion plate 2 (4d) represents the viscosity of the asphalt; Step 5: When the circular plate (5b) moves upward, the contact block (5a) pushes the sliding plate (7b) to move upward at the same time, and the rising height of the circular plate (5b) can be recorded by the rising height of the sliding plate (7b); Step 6: The bidirectional rotating seat (2) rotates so that the top of the scraper (6a) and the bottom of the second extrusion plate (4d) are sheared, and the asphalt at the bottom of the second extrusion plate (4d) is hung and dropped, and the dropped asphalt falls to the top of the circular plate (5b); Step 7: While the bidirectional rotating seat (2) is rotating, the push pin (7c1) gradually separates from the protrusion (7e). When the separation is completed, 7c will squeeze the slide plate (7b), and then the next test can be carried out, repeating the process of steps 4 to 7.

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