Bituminous pavement interlayer bonding strength detection device

Abstract

The invention relates to the technical field of detection devices, and discloses an asphalt pavement interlayer bonding strength detection device which comprises a bearing base, a detection sleeve and a detection mechanism, a sample loading mechanism for moving a sample to a detection position is arranged on the bearing base, a clamping mechanism matched with the sample loading mechanism to clamp the sample is arranged on the bearing base, and the detection sleeve is arranged on the detection mechanism. The clamping mechanism is arranged on the bearing base, the sample loading mechanism moves along with the clamping mechanism, the bearing base is provided with a sweeping mechanism which moves along with the clamping mechanism to sweep a detection sleeve, and the bearing base is provided with a heat preservation mechanism for preserving heat of a sample. The test sample is prevented from slipping in the test process, the accuracy of the detection result is improved, the sample loading efficiency is improved, the temperature fluctuation of the test sample is avoided by the heat preservation mechanism, and the accuracy of the use condition simulation result of the pavement at different environment temperatures is improved.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, and in particular to a device for detecting the interlayer bonding strength of an asphalt pavement. Background Art

[0002] In order to accurately evaluate the bonding performance between different asphalt layers, provide key parameters for pavement structure design, ensure the rationality and reliability of the design, and at the same time inspect the construction process and material quality, it is necessary to use a bonding strength testing device to test the bonding strength of different asphalt pavement layers in order to detect whether the expected interlayer bonding effect is achieved during the construction process, so as to timely discover problems and improve construction methods, and study the influence of different factors on interlayer bonding strength, such as temperature, humidity, material composition, etc., to provide a basis for optimizing pavement materials and construction conditions.

[0003] The existing laboratory asphalt pavement interlayer bonding strength testing device usually has a pulling head buried or bonded between the asphalt layers. After the bonding is firm, a vertical upward pulling force is applied to the pulling head through a pulling device until the pulling head is separated from the asphalt layer, so as to determine the interlayer bonding strength. The pulling test of this structure is relatively simple to operate and can better simulate the stress conditions between the pavement layers in actual use. However, in order to prevent the splashing of the sample at the moment of pulling off, the existing asphalt pavement interlayer bonding strength testing device is usually provided with a protective cover to improve the protection of the operator. However, the provision of the protective cover increases the difficulty of clamping the sample, which makes the sample clamping time-consuming and labor-intensive, and reduces the detection efficiency. At the same time, since the bonding strength between the asphalt pavement layers is greatly affected by temperature, the existing detection device usually uses a constant temperature box and other equipment to keep the sample constant before testing. However, after being taken out of the constant temperature box, the sample temperature will fluctuate, resulting in inaccurate simulation of the use conditions of the pavement under different ambient temperatures, affecting the determination of the results. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a device for detecting the interlayer bonding strength of an asphalt pavement.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: an asphalt pavement interlayer bonding strength detection device, comprising a bearing base, a detection sleeve is arranged on the bearing base, a detection mechanism is arranged on the inner side of the detection sleeve, the detection mechanism comprises a tensile gauge, a sensor, an upper force transmission rod, a lower force transmission rod and an adhesive, the upper force transmission rod and the lower force transmission rod are connected to the two ends of the sensor respectively, the upper force transmission rod is connected to the tensile machine through a thread, the lower force transmission rod is connected to the adhesive through a thread, a sample loading mechanism for moving the sample to the detection position is arranged on the bearing base, and a sample loading mechanism for connecting to the sample loading mechanism is arranged on the bearing base. The structure cooperates with a clamping mechanism for clamping the sample, and the loading mechanism moves with the clamping mechanism. The clamping mechanism includes a support sleeve arranged on the bearing base, a clamping pallet is rotatably provided on the support sleeve, a clamping slide groove is provided on the clamping pallet, a clamping motor for driving the clamping pallet to rotate is provided in the support sleeve, a bearing slider is slidably provided on the bearing base, a clamping block is provided at the upper end of the bearing slider, and a clamping slide column slidably matched with the clamping slide groove is provided at the lower end of the bearing slider, a cleaning mechanism for cleaning the detection sleeve with the movement of the clamping block is provided on the bearing base, and an insulation mechanism for keeping the sample warm is provided on the bearing base.

[0006] As an improvement, the loading mechanism includes a loading plate slidingly arranged on a supporting base, a driving column connected to the clamping plate is rotatably provided on the supporting base, a driving gear is provided on the driving column, a mating gear meshing with the driving gear is rotatably provided on the supporting base, a mating column is provided on the mating gear, a mating slot is provided on the mating column, the mating slot includes an oblique slot and a transverse slot connected to each other, a movable sleeve is provided at the lower end of the loading plate, a movable spring is provided in the movable sleeve, a movable slide rod connected to the movable spring is slidably provided in the movable sleeve, and the movable slide rod is slidably connected to the mating slot.

[0007] As an improvement, a cleaning rack is slidingly provided inside the detection sleeve, a cleaning block is provided on the cleaning rack, a linkage arm is rotatably provided on the detection sleeve, a linkage groove wheel is provided at one end of the linkage arm, a connecting rope is provided on the cleaning rack that passes through the linkage groove wheel and is connected to the detection sleeve, a linkage sliding column is provided at the other end of the linkage arm, a linkage rack is provided on the clamping block, and a linkage slider that slides with the linkage sliding column is provided on the linkage rack.

[0008] As an improvement, the cleaning frame is provided with a connecting sleeve, which is symmetrically arranged on both sides of the connecting rope. A connecting spring is provided in the connecting sleeve. A connecting slide rod connected to the connecting spring is slidably provided in the connecting sleeve. One end of the connecting slide rod extends out of the connecting sleeve and is connected to the bearing base.

[0009] As an improvement, the lower end of the sample loading support plate is provided with an insulation jacket, the lower end of the insulation jacket is connected to a liquid inlet jacket, the clamping block is provided with a slow flow chamber, multiple groups of the slow flow chambers are connected to each other, the detection sleeve is a hollow structure, the detection sleeve is connected to one group of the slow flow chambers, and the insulation jacket is connected to another group of the slow flow chambers.

[0010] As an improvement, the detection sleeve is connected with a liquid outlet pipe, one end of the insulation jacket is provided with an insulation port, one end of the liquid inlet jacket is connected with a liquid delivery pipe, the slow flow chamber is provided with a liquid replenishment port and a liquid return port, the insulation mechanism includes a connecting pipe, a liquid replenishment pipe and an upper liquid pipe, a connecting pipe is provided between the liquid replenishment port on one group of the slow flow chambers and the liquid return port on an adjacent group of the slow flow chambers, a liquid replenishment pipe is provided between the insulation port and the liquid replenishment port on one group of the slow flow chambers, and an upper liquid pipe is provided between the liquid return port on another group of the slow flow chambers and the liquid inlet pipe.

[0011] As an improvement, a slow flow mechanism for slowing down the flow of liquid is provided in the slow flow chamber, and the slow flow mechanism includes a partition plate, a connecting hole is provided on the partition plate, slow flow plates are provided at both ends of the partition plate, and multiple groups of slow flow plates are staggered.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: during the process of the clamping mechanism self-centering the sample, the loading mechanism drives the sample to move upward to the detection point and hold it, and then the clamping mechanism completes the self-centering clamping of the sample, so that the position of the sample at the detection point remains fixed, avoiding the sample from slipping during the test, and improving the accuracy of the test result. The clamping mechanism cooperates with the loading mechanism to improve the efficiency of loading, and the positions of different samples are kept unchanged each time, thereby improving the representativeness of the test result. The cleaning mechanism can clean the test set after the test is completed, avoiding the impurities adhering to the test set from affecting the test. The heat preservation mechanism keeps the sample warm, avoiding the temperature fluctuation of the sample, and improving the accuracy of the simulation results of the use conditions of the road surface under different ambient temperatures. Specifically: 1. The clamping mechanism drives the clamping pallet to rotate through the clamping motor, and the clamping pallet drives the load-bearing slider to slide along the load-bearing slide slot. When the load-bearing slider moves toward the axis of the clamping pallet, multiple groups of clamping blocks arranged at equal distances from the circumference move synchronously to clamp the sample in a self-centering manner. The clamping efficiency is high and the position of the sample is fixed each time, which improves convenience and detection accuracy; 2. The loading mechanism drives the driving column connected to it to rotate during the process of rotating the clamping plate to clamp and fix the sample. The driving column drives the matching column to rotate through the mutually meshing driving gear and matching gear, and the matching slide groove rotates synchronously. The moving slide rod passes through the oblique slide groove in turn and enters the horizontal slide groove. The moving sleeve drives the loading plate to move upward. After the moving slide rod enters the horizontal slide groove, the height of the loading plate remains unchanged. At this time, the loading plate is at the test point, which is convenient for testing the sample. It can realize the operation of clamping and loading at the same time, simplifying the operation steps of loading and clamping, and improving the test efficiency and the accuracy of the test results. 3. When the clamping block is clamping the sample, the linkage frame drives the linkage slide block to move synchronously, the linkage slide column drives the linkage arm and the linkage groove wheel to rotate synchronously, the linkage groove wheel pulls the connecting rope, and the connecting rope pulls the cleaning frame and the cleaning block to move upward synchronously. The cleaning block cleans the inner wall of the test sleeve to prevent debris from adhering to the inner wall of the test sleeve and improve the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0014] Figure 2 It is an exploded diagram of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0015] Figure 3 It is a cross-sectional view of a device for detecting interlayer bonding strength of an asphalt pavement according to the present invention.

[0016] Figure 4 It is an exploded view of a clamping mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0017] Figure 5 It is a cross-sectional view of a clamping mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0018] Figure 6 It is a structural schematic diagram of a sample loading mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0019] Figure 7 It is an exploded view of a sample loading mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0020] Figure 8 It is a cross-sectional view of a sample loading mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0021] Fig. 9 It is a structural schematic diagram of a cleaning mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0022] Fig.10 It is an exploded view of a cleaning mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0023] Fig.11 It is an exploded view of a detection mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0024] Fig.12 It is a structural schematic diagram of a bearing base of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0025] Fig.13It is a structural schematic diagram of a heat preservation mechanism of an asphalt pavement interlayer bonding strength detection device of the present invention.

[0026] As shown in the figure: 1. Bearing base; 11. Detection sleeve; 111. Liquid outlet pipe; 112. Liquid inlet pipe; 12. Bearing block; 121. Bearing slide; 122. Bearing slide column; 2. Detection mechanism; 21. Tension gauge; 22. Sensor; 221. Upload rod; 222. Download rod; 223. Adhesive piece; 23. Sample; 3. Clamping mechanism; 31. Clamping support plate; 311. Clamping slide; 32. Loading slider; 321, clamping slide column; 322, clamping block; 323, slow flow mechanism; 3231, partition plate; 3232, slow flow plate; 3233, connecting hole; 3234, liquid replenishing port; 3235, liquid return port; 3236, slow flow cavity; 324, support sleeve; 3241, clamping motor; 4, loading mechanism; 41, loading support plate; 411, load sliding sleeve; 412, guide block; 413, guide 414, insulation jacket; 4141, insulation port; 415, liquid inlet jacket; 4151, liquid delivery pipe; 416, movable sleeve; 4161, movable slide rod; 4162, movable spring; 42, driving column; 421, driving gear; 43, matching gear; 431, matching column; 432, matching slide; 4321, oblique slide; 4322, horizontal slide; 5, cleaning mechanism; 51, cleaning Sweeping frame; 511, limit card slot; 52, cleaning block; 521, limit card block; 53, connecting sleeve; 531, connecting slide rod; 532, connecting spring; 54, guide groove wheel; 541, connecting rope; 55, linkage frame; 551, linkage slide block; 552, linkage arm; 553, linkage groove wheel; 554, linkage slide column; 6, insulation mechanism; 61, connecting pipe; 62, liquid replenishing pipe; 63, upper liquid pipe. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Fig.11As shown, a device for detecting the interlayer bonding strength of an asphalt pavement comprises a bearing base 1, on which a detection sleeve 11 is arranged, and the detection sleeve 11 is an annular structure. The bearing base 1 is provided with a detection mechanism 2 inside the detection sleeve 11, and the detection mechanism 2 comprises a tensile gauge 21, a sensor 22, an upper force transmission rod 221, a lower force transmission rod 222 and an adhesive member 223. The upper force transmission rod 221 and the lower force transmission rod 222 are connected at both ends of the sensor 22, respectively. The upper force transmission rod 221 is connected to the tensile machine through a thread, and the lower force transmission rod 222 is connected to the tensile machine through a thread. The force rod 222 is connected to the adhesive piece 223 through a thread, and the adhesive piece 223 is connected to the sample 23. The bearing base 1 is provided with a loading mechanism 4 for moving the sample 23 to the detection position, and the bearing base 1 is provided with a clamping mechanism 3 for clamping the sample 23 in cooperation with the loading mechanism 4. The loading mechanism 4 moves with the clamping mechanism 3. The bearing base 1 is provided with a cleaning mechanism 5 for cleaning the detection sleeve 11 along with the clamping mechanism 3. The bearing base 1 is provided with a heat preservation mechanism 6 for keeping the sample 23 warm.

[0029] The working principle of the present invention is as follows: the adhesive piece 223 and the sample 23 are fixedly connected by pasting and then placed on the clamping mechanism 3. When the clamping mechanism 3 starts to clamp the sample 23 by self-centering, the loading mechanism 4 drives the sample 23 to move upward to the detection point and hold it. After that, the clamping mechanism 3 completes the self-centering clamping of the sample 23, so that the position of the sample 23 at the detection point is kept fixed, avoiding the sample 23 from slipping during the test, and improving the accuracy of the test result. After that, the lower force transmission rod 222 is connected to the adhesive piece 223 and is aligned with the tension meter 21 through the sensor 22. The sample 23 is subjected to bonding strength test, which is the current existing technology and will not be elaborated here. The clamping mechanism 3 cooperates with the loading mechanism 4 to improve the efficiency of loading and keep the positions of different samples 23 unchanged each time, thereby improving the representativeness of the test results. Furthermore, the cleaning mechanism 5 moving with the clamping mechanism 3 can clean the test sleeve 11 after the test is completed to avoid the impurities adhering to the test sleeve 11 from affecting the test. At the same time, the insulation mechanism 6 can insulate the sample 23 to avoid temperature fluctuations of the sample 23, thereby improving the accuracy of the simulation results of road use conditions at different ambient temperatures.

[0030] Combined with Figure 1 , Attachment Figure 4 , Attachment Figure 5 and attached Fig.12As shown, the bearing base 1 is provided with a bearing block 12, the bearing block 12 is a hollow structure, the bearing block 12 is provided with a bearing slide groove 121, and the bearing slide groove 121 is equidistantly arranged in at least four groups along the circumferential direction of the bearing block 12. The clamping mechanism 3 includes a support sleeve 324 arranged on the bearing base 1, the support sleeve 324 is arranged on the inner side of the bearing block 12, a clamping pallet 31 is rotatably provided on the support sleeve 324, a clamping slide groove 311 is provided on the clamping pallet 31, the support slide groove is arranged corresponding to the bearing slide groove 121, one end of the support slide groove is arranged toward the axis of the clamping pallet 31, a clamping motor 3241 for driving the clamping pallet 31 to rotate is provided in the support sleeve 324, a bearing slider 32 is slidably provided in the bearing slide groove 121, a clamping block 322 is provided at the upper end of the bearing slider 32, the inner side of the clamping block 322 is an arc structure, and a clamping slide column 321 is provided at the lower end of the bearing slider 32 to slide with the clamping slide groove 311.

[0031] The working principle of the clamping mechanism 3 is as follows: the clamping motor 3241 is started, the clamping motor 3241 drives the clamping support plate 31 to rotate, and the clamping slot 311 rotates synchronously during the rotation of the clamping support plate 31. Since one end of the clamping slot 311 is arranged toward the axis of the clamping support plate 31, the clamping slot 311 can drive the bearing slider 32 to slide along the bearing slot 121 through the clamping slide column 321. When the bearing slider 32 moves along the bearing slot 121 toward the axis of the clamping support plate 31, The clamping block 322 moves synchronously, and multiple groups of clamping blocks 322 arranged at equal distances from each other move synchronously to perform self-centering clamping on the sample 23. Since the inner side of the clamping block 322 is an arc-shaped structure, the contact area between the clamping block 322 and the sample 23 is increased, thereby improving the fixing effect on the sample 23. On the contrary, when the load-bearing slider 32 moves along the load-bearing slide groove 121 away from the axis of the clamping support plate 31, multiple groups of clamping blocks 322 arranged at equal distances from each other move synchronously to loosen the sample 23.

[0032] Combined with Figure 3 , Attachment Figure 4 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig.12As shown, the bearing block 12 is provided with a bearing slide 122, and the bearing slide 122 is provided in multiple groups. The loading mechanism 4 includes a loading support plate 41 slidably arranged on the bearing block 12, and the loading support plate 41 is provided with a guide groove 413 that cooperates with the clamping block 322, and the loading support plate 41 is provided with a guide block 412, and the loading support plate 41 is provided with a bearing sleeve 411 that slides with the bearing slide 122. The bearing block 12 is rotatably provided with a driving column 42 connected to the clamping support plate 31, and the driving column 42 is provided with a driving gear 421, and the bearing block 12 is rotatably provided with a driving column 42 connected to the driving gear 421. The mating gear 43 is meshed with the wheel 421, and a mating column 431 is provided on the mating gear 43, and a mating slide groove 432 is provided on the mating column 431. The mating slide groove 432 includes an oblique slide groove 4321 and a transverse slide groove 4322 which are connected to each other, and the transverse slide groove 4322 is arranged above the oblique slide groove 4321. A movable sleeve 416 is provided at the lower end of the sample loading support plate 41, and a movable spring 4162 is provided in the movable sleeve 416. A movable slide rod 4161 connected to the movable spring 4162 is slidably provided in the movable sleeve 416, and the movable slide rod 4161 is slidably connected to the mating slide groove 432.

[0033] The working principle of the loading mechanism 4 is as follows: the clamping support plate 31 rotates to clamp the sample 23, thereby driving the driving column 42 connected thereto to rotate, the driving column 42 drives the driving gear 421 to rotate, the driving gear 421 drives the matching column 431 to rotate through the matching gear 43 meshing therewith, the matching column 431 drives the matching slide 432 to rotate synchronously, and the moving slide rod 4161 keeps slidingly contacting with the matching slide 432 due to the setting of the moving spring 4162. At this time, in the process that the matching column 431 rotates to make the moving slide rod 4161 pass through the oblique slide 4321 and enter the horizontal slide 4322 in sequence, the moving slide rod 4161 passes through the moving sleeve 4 16 drives the sample loading support plate 41 to move upward. After the moving slide bar 4161 enters the horizontal slide groove 4322, the height of the sample loading support plate 41 remains unchanged. At this time, the sample loading support plate 41 is at the test point, which is convenient for testing the sample 23. On the contrary, during the process of rotating the clamping support plate 31 to relax the sample 23, the matching column 431 rotates to make the moving slide bar 4161 pass through the horizontal slide groove 4322 and enter the oblique slide groove 4321 in sequence. The moving slide bar 4161 drives the sample loading support plate 41 to move downward through the moving sleeve 416 until the matching column 431 stops rotating. At this time, the sample loading support plate 41 is at the sample loading point, which is convenient for the operation of loading and unloading the sample 23.

[0034] Combined with Figure 3 , Attachment Figure 4 , Attachment Fig. 9 and attached Fig.10As shown, a cleaning frame 51 is slidably provided in the detection sleeve 11, and a limit card slot 511 is provided on the cleaning frame 51, and a cleaning block 52 is provided on the cleaning frame 51, and the cleaning block 52 contacts the inner wall of the detection sleeve 11, and a limit card block 521 movably connected with the limit card slot 511 is provided on the cleaning block 52, a guide groove wheel 54 is rotatably provided on the detection sleeve 11, and a linkage arm 552 is rotatably provided on the detection sleeve 11, and a linkage groove wheel 553 is provided at one end of the linkage arm 552, and a connecting rope 541 is provided on the cleaning frame 51, which passes through the guide groove wheel 54 and the linkage groove wheel 553 in sequence and is connected to the detection sleeve 11, and a linkage sliding column 554 is provided at the other end of the linkage arm 552, and a linkage frame 55 is provided on the clamping block 322, and a linkage slider 551 slidably matched with the linkage sliding column 554 is provided on the linkage frame 55; The cleaning frame 51 is provided with a connecting sleeve 53, which is symmetrically arranged on both sides of the connecting rope 541. A connecting spring 532 is provided in the connecting sleeve 53. A connecting slide rod 531 connected to the connecting spring 532 is slidably provided in the connecting sleeve 53. One end of the connecting slide rod 531 extends out of the connecting sleeve 53 and is connected to the supporting base 1.

[0035] Working principle of the cleaning mechanism 5: When the clamping block 322 clamps the sample 23 in the direction close to the sample 23, the clamping block 322 drives the linkage slider 551 to move synchronously through the linkage frame 55, and the linkage slider 551 drives the linkage arm 552 to rotate through the linkage slide column 554 that slides with it, and the linkage arm 552 drives the linkage groove wheel 553 to rotate, and the linkage groove wheel 553 pulls the connecting rope 541, and the connecting rope 541 pulls the cleaning frame 51 to move upward, and the cleaning frame 51 drives the cleaning block 52 to move upward synchronously. In this process, the cleaning block 52 cleans the inner wall of the detection sleeve 11 , to prevent debris from adhering to the inner wall of the detection sleeve 11. When the cleaning block 52 is damaged, the cleaning block 52 can be easily replaced by cooperating with the limit card slot 511 and the limit card block 521. At the same time, the connecting sleeve 53 moves upward and squeezes the connecting spring 532, and the connecting spring 532 is forced to shrink. On the contrary, when the clamping block 322 clamps the sample 23 in the direction away from the sample 23, the connecting spring 532 is reset and drives the cleaning frame 51 to move downward through the connecting sleeve 53, the linkage frame 55 drives the linkage slider 551 to reset, the linkage groove wheel 553 is reset, and the connecting rope 541 is reset.

[0036] Combined with Figure 1 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 7 , Attachment Figure 8 and attached Fig.13As shown, the lower end of the sample loading support plate 41 is provided with an insulation jacket 414, and the lower end of the insulation jacket 414 is connected to a liquid inlet jacket 415, and the clamping block 322 is provided with a slow flow cavity 3236, and multiple groups of the slow flow cavities 3236 are connected to each other. The detection sleeve 11 is a hollow structure, the detection sleeve 11 is connected to one group of the slow flow cavities 3236, and the insulation jacket 414 is connected to another group of the slow flow cavities 3236; The detection sleeve 11 is connected with a liquid outlet pipe 111, and the liquid outlet pipe 111 is connected with an external liquid insulation providing mechanism, and the external liquid insulation providing mechanism can recover the liquid. The insulation jacket 414 is provided with an insulation port 4141 at one end, and a liquid inlet jacket 415 is connected with a liquid delivery pipe 4151 at one end, and the liquid delivery pipe 4151 is connected with the external liquid insulation providing mechanism. The external liquid insulation providing mechanism can pressurize the liquid. The external liquid insulation providing mechanism can be composed of a liquid storage chamber with an infusion pump, and the liquid storage chamber is provided with an insulation component, and the insulation component includes a heating and cooling component. This is the current existing technology and will not be described here. In detail, the slow flow chamber 3236 is provided with a liquid inlet 3234 and a liquid return port 3235, the liquid inlet 3234 is located below the liquid return port 3235, the heat preservation mechanism 6 includes a connecting pipe 61, a liquid inlet pipe 62 and an upper liquid pipe 63, a connecting pipe 61 is provided between the liquid inlet 3234 on one group of the slow flow chambers 3236 and the liquid return port 3235 on an adjacent group of the slow flow chambers 3236, a liquid inlet 62 is provided between the heat preservation port 4141 and the liquid inlet 3234 on one group of the slow flow chambers 3236, and an upper liquid pipe 63 is provided between the liquid return port 3235 on another group of the slow flow chambers 3236 and the liquid inlet pipe 112; A slow flow mechanism 323 for slowing down the flow of liquid is provided in the slow flow chamber 3236, and the slow flow mechanism 323 includes a partition plate 3231, which is located between the liquid replenishment port 3234 and the liquid return port 3235. A connecting hole 3233 is provided on the partition plate 3231, and slow flow plates 3232 are provided at both ends of the partition plate 3231. Multiple groups of slow flow plates 3232 are staggered.

[0037] Working principle of the heat preservation mechanism 6: the external heat preservation liquid providing mechanism inputs the heat preservation liquid into the liquid inlet jacket 415 through the liquid delivery pipe 4151, and the heat preservation liquid entering the liquid inlet jacket 415 passes through the heat preservation jacket 414, the heat preservation port 4141 and the liquid replenishing pipe 62 in turn, and then enters a slow flow cavity 3236 on a group of clamping blocks 322 through the liquid replenishing port 3234. After that, the heat preservation liquid passes through multiple groups of slow flow plates 3232 in turn, and then enters the upper part of the partition plate 3231 through the connecting hole 3233. After that, after passing through multiple groups of slow flow plates 3232 again, it passes through the liquid return port 3235, the liquid inlet pipe 112 and the adjacent The liquid replenishing port 3234 enters the slow flow chamber 3236 of the adjacent clamping block 322. The slow flow chamber 3236 on the last group of clamping blocks 322 cooperates with the liquid inlet pipe 112 to input the liquid into the detection sleeve 11. The liquid entering the detection sleeve 11 fills the detection sleeve 11 and then returns to the external insulation liquid providing mechanism through the liquid outlet pipe 111 to realize the circulation of the insulation liquid. Since the liquid moves from bottom to top as a whole, the air in the pipeline will be discharged during the movement of the liquid, so as to avoid the air slowing down the heat transfer, so that the temperature of the sample 23 remains constant, and the accuracy of the test result of the sample 23 is improved.

[0038] When the present invention is implemented, firstly, preparations are made before testing. According to the raw materials such as asphalt and aggregate used in the actual project, asphalt mixture is accurately weighed and prepared according to the designed mix ratio. At the same time, it is ensured that the quality and performance of the binder meet the requirements, such as the viscosity and curing time of the binder should match the test conditions and the actual project. Then, an asphalt mixture sample 23 is prepared by using equipment such as a Marshall compactor or a rotary compactor. The asphalt mixtures of different layers are compacted in layers to form a composite sample 23 with interlayer bonding. During the molding process of the sample 23, the compaction temperature and the number of compactions of each layer are strictly controlled to ensure the density and interlayer bonding effect of the sample 23. For some tests with special requirements, other molding methods such as static pressure method can be used to prepare the sample 23. The prepared sample 23 is cured under the specified temperature and humidity conditions to fully cure and stabilize the asphalt mixture and ensure that the binder achieves the best bonding performance. The curing temperature is generally room temperature or a specific temperature determined according to the actual project environment. The curing time is usually a certain number of days, such as 7 days, 14 days, etc., to ensure that the performance of the sample 23 can be stabilized before testing. During the test, the adhesive piece 223 and the sample 23 are fixedly connected by pasting, the liquid delivery pipe 4151 and the liquid outlet pipe 111 are respectively connected to the external insulation liquid providing mechanism to allow the insulation liquid to flow, the sample 23 is placed on the sample loading tray 41, the clamping motor 3241 is started, the clamping motor 3241 drives the clamping tray 31 to rotate, and the multiple groups of clamping blocks 322 are synchronously approached to each other to clamp and fix the sample 23. During this process, the sample loading tray 41 drives the sample 23 to move upward to the testing point, and the cleaning frame 51 drives the cleaning block 52 to move upward. Then, the lower force transmission rod 222 is connected to the adhesive piece 223, and then, the upper force transmission rod 221 is connected to the dynamometer 21, the dynamometer 21 is started, and the dynamometer 21 pulls the adhesive piece 223 upward to test the interlayer bonding strength of the asphalt pavement.

[0039] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. An asphalt pavement interlayer bonding strength detection device, comprising a bearing base (1), a detection sleeve (11) being provided on the bearing base (1), a detection mechanism (2) being provided on the inner side of the detection sleeve (11) of the bearing base (1), the detection mechanism (2) comprising a tensile gauge (21), a sensor (22), an upper force transmission rod (221), a lower force transmission rod (222) and an adhesive member (223), the upper force transmission rod (221) and the lower force transmission rod (222) being connected at both ends of the sensor (22), the upper force transmission rod (221) being connected to the tensile machine via a thread, and the lower force transmission rod (222) being connected to the adhesive member (223) via a thread, characterized in that: The bearing base (1) is provided with a sample loading mechanism (4) for moving the sample (23) to a detection position, and the bearing base (1) is provided with a clamping mechanism (3) for cooperating with the sample loading mechanism (4) to clamp the sample (23), and the sample loading mechanism (4) moves with the clamping mechanism (3); The clamping mechanism (3) comprises a support sleeve (324) arranged on the bearing base (1), a clamping support plate (31) being rotatably arranged on the support sleeve (324), a clamping slide groove (311) being arranged on the clamping support plate (31), a clamping motor (3241) for driving the clamping support plate (31) to rotate being arranged in the support sleeve (324), a bearing slide block (322) being arranged at the upper end of the bearing slide block (32), and a clamping slide column (321) being slidably matched with the clamping slide groove (311) being arranged at the lower end of the bearing slide block (32); The bearing base (1) is provided with a cleaning mechanism (5) for cleaning the detection sleeve (11) as it moves with the clamping block (322), and the bearing base (1) is provided with a heat preservation mechanism (6) for heat preservation of the sample (23).

2. The asphalt pavement interlayer bonding strength detection device according to claim 1 is characterized in that: The loading mechanism (4) comprises a loading support plate (41) slidably arranged on a supporting base (1); a driving column (42) connected to the clamping support plate (31) is rotatably arranged on the supporting base (1); a driving gear (421) is arranged on the driving column (42); a matching gear (43) meshing with the driving gear (421) is rotatably arranged on the supporting base (1); a matching column (431) is arranged on the matching gear (43); a matching column (431) is arranged on the matching column (431); The slide groove (432) comprises an oblique slide groove (4321) and a transverse slide groove (4322) which are connected to each other. The lower end of the sample loading support plate (41) is provided with a movable sleeve (416). A movable spring (4162) is provided in the movable sleeve (416). A movable slide rod (4161) connected to the movable spring (4162) is slidably provided in the movable sleeve (416). The movable slide rod (4161) is slidably connected to the matching slide groove (432).

3. The asphalt pavement interlayer bonding strength detection device according to claim 1 is characterized in that: A cleaning frame (51) is slidably provided in the detection sleeve (11), a cleaning block (52) is provided on the cleaning frame (51), a linkage arm (552) is rotatably provided on the detection sleeve (11), a linkage groove wheel (553) is provided at one end of the linkage arm (552), a connecting rope (541) is provided on the cleaning frame (51) and passes through the linkage groove wheel (553) and is connected to the detection sleeve (11), a linkage sliding column (554) is provided at the other end of the linkage arm (552), a linkage frame (55) is provided on the clamping block (322), and a linkage sliding block (551) is provided on the linkage frame (55) and is slidably matched with the linkage sliding column (554).

4. The asphalt pavement interlayer bonding strength detection device according to claim 3 is characterized in that: The cleaning frame (51) is provided with a connecting sleeve (53), the connecting sleeve (53) being symmetrically arranged on both sides of the connecting rope (541), a connecting spring (532) being arranged in the connecting sleeve (53), a connecting slide rod (531) connected to the connecting spring (532) being slidably arranged in the connecting sleeve (53), and one end of the connecting slide rod (531) extending out of the connecting sleeve (53) is connected to the bearing base (1).

5. The asphalt pavement interlayer bonding strength detection device according to claim 2 is characterized in that: The lower end of the sample loading support plate (41) is provided with a heat-insulating jacket (414), and the lower end of the heat-insulating jacket (414) is connected to a liquid inlet jacket (415). The clamping block (322) is provided with a slow flow chamber (3236), and a plurality of groups of the slow flow chambers (3236) are connected to each other. The detection sleeve (11) is a hollow structure, and the detection sleeve (11) is connected to one group of the slow flow chambers (3236), and the heat-insulating jacket (414) is connected to another group of the slow flow chambers (3236).

6. The asphalt pavement interlayer bonding strength detection device according to claim 5, characterized in that: The detection sleeve (11) is connected to a liquid outlet pipe (111), one end of the heat-insulating jacket (414) is provided with a heat-insulating port (4141), one end of the liquid inlet jacket (415) is connected to a liquid delivery pipe (4151), the slow-flow chamber (3236) is provided with a liquid replenishment port (3234) and a liquid return port (3235), the heat-insulating mechanism (6) comprises a connecting pipe (61), a liquid replenishment pipe (62) and an upper liquid pipe (63), a group of the slow-flow chamber ( A connecting pipe (61) is provided between the liquid replenishment port (3234) on one group of slow flow chambers (3236) and the liquid return port (3235) on an adjacent group of the slow flow chambers (3236); a liquid replenishment pipe (62) is provided between the heat preservation port (4141) and the liquid replenishment port (3234) on one group of the slow flow chambers (3236); and an upper liquid pipe (63) is provided between the liquid return port (3235) on another group of the slow flow chambers (3236) and the liquid inlet pipe (112).

7. The asphalt pavement interlayer bonding strength detection device according to claim 5, characterized in that: A slow flow mechanism (323) for slowing down the flow of liquid is provided in the slow flow cavity (3236), the slow flow mechanism (323) comprising a partition plate (3231), a connecting hole (3233) being provided on the partition plate (3231), slow flow plates (3232) being provided at both ends of the partition plate (3231), and a plurality of groups of slow flow plates (3232) being arranged in a staggered manner.

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