A road construction quality structural layer thickness detection device and method

Abstract

The present invention belongs to the technical field of thickness detection, and specifically relates to a device and method for detecting the thickness of a road construction quality structural layer; the device comprises a mobile detection platform, on which a position measuring and coring mechanism is connected; the position measuring and coring mechanism comprises a coring square plate, on both sides of which T-shaped square plates are installed, and on which a direction adjusting and rotation angle component is connected; a bearing is also provided at the center of the coring square plate, on which a displacement threaded shaft is installed, and the output end of the displacement threaded shaft faces the mobile detection platform; a displacement cross block is threadedly installed on the displacement threaded shaft, and on both sides of the displacement cross block U-shaped frame plates are installed; through the direction adjusting and rotation angle component, the device measures the thickness of the road structural layer at different angles, which reduces the limitations of the device when in use, and at the same time improves the use effect of the device, so that the device can fully understand the thickness distribution of the structural layer, resulting in the device being able to collect more data to improve the accuracy of the measurement.

Description

Technical Field

[0001] The invention belongs to the technical field of thickness detection, and specifically relates to a device and method for detecting the thickness of a road construction quality structural layer. Background Art

[0002] Roads are infrastructure for various trackless vehicles and pedestrians to pass through. The road construction quality structural layer refers to the various paving layers that constitute the road surface, including different structural layers such as roadbed, base layer, surface layer, etc. Among them, according to their position and function, they are mainly divided into surface layer, base layer and subbase layer; the thickness of the road structural layer plays a decisive role in the road's driving load and service life, so after the road is paved, it is necessary to take core samples from the road to detect the thickness and structural strength of the structural layer.

[0003] When using an existing road construction quality structural layer thickness detection device, the length of the structural layer sample core is usually measured to obtain the thickness of the structural layer. However, during actual use, the device can only measure the road at a single angle, that is, a vertical angle. When the thickness of the structural layer changes significantly, resulting in a higher demand for measurement accuracy, or when the measured area is deformed or damaged, the device needs to measure the thickness of the structural layer at different angles. This can provide a more comprehensive understanding of the distribution of the thickness of the structural layer. However, it is difficult for existing devices to do this, which makes the device have strong limitations when used, thereby reducing the use effect of the device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a device and method for detecting the thickness of a road construction quality structural layer, which effectively solves the problems in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a device for detecting the thickness of a road construction quality structural layer, comprising a mobile detection platform, the mobile detection platform is connected with a position measuring and coring mechanism, the position measuring and coring mechanism is used to take a sample core from a road to observe the thickness of a road structural layer in the sample core;

[0006] The position measuring and coring mechanism comprises a coring square plate, on both sides of which are mounted T-shaped square plates, on which are connected direction and angle adjustment components for adjusting the coring angle of the device;

[0007] A bearing is also provided at the center of the core-taking square plate, on which a displacement threaded shaft is mounted, and the output end of the displacement threaded shaft faces the mobile detection platform; a displacement cross block is threadedly mounted on the displacement threaded shaft, and U-shaped frame plates are mounted on both sides of the displacement cross block, and grooves are provided on the opposite surfaces of the two U-shaped frame plates, and a fixed round rod is provided on one of the grooves, and a circulating shock stop is connected to the fixed round rod.

[0008] Preferably, the circulating shock stop includes a cable and a fixed pulley; an auxiliary rotating shaft is installed on the fixed pulley, and auxiliary substrates are installed at both ends of the auxiliary rotating shaft, and the two auxiliary substrates are connected to both sides of the T-shaped square plate; one end of the cable is connected to the fixed round rod, and the other end is connected to a winding pulley, and the winding pulley is located at a lower height than the fixed pulley; a rotating shaft is installed on the winding pulley, and both ends of the rotating shaft pass through the auxiliary substrate and are connected to rotating bevel gears; a clockwork spring is installed on the rotating shaft, and the end points of the clockwork spring are connected to the auxiliary substrate.

[0009] Preferably, the rotating bevel gear is meshed and connected to the driving bevel gear, and a driving shaft is installed on the driving bevel gear, and a driving substrate is provided on the driving shaft, and the driving substrate is connected to the auxiliary substrate; the end of the driving shaft away from the driving bevel gear is connected to a rotating cam; a double-acting column is provided on the rotation path of the rotating cam, and a guide plate is installed on the side of the double-acting column close to the driving bevel gear, and a guide column is slidably provided on the guide plate, and guide substrates are installed at both ends of the guide column, and the guide substrate is arranged on the driving substrate; a guide spring is sleeved on the guide column, one end of the guide spring is connected to the guide substrate, and the other end is connected to the guide plate.

[0010] Preferably, a displacement square groove is provided on the end of the displacement threaded shaft away from the mobile detection platform, the displacement square groove is connected to the output end of the drive motor, a drive frame is installed on the drive motor, and the drive frame is arranged on the side of the coring square plate away from the mobile detection platform.

[0011] Preferably, positioning square plates are installed on the four sides of the displacement cross block, and a positioning cylinder is installed on the side of the positioning square plate close to the coring square plate, and the positioning cylinder is arranged through the coring square plate; the two U-shaped frame plates are connected to the sampling block together, and mounting brackets are symmetrically arranged on the sampling block, and the two mounting brackets are connected to the rotating motor together, and the output end of the rotating motor passes through the sampling block and is connected to the coring cylinder, and the coring cylinder is made of transparent material, and scales are arranged on the four sides of the outer wall; a sharp ring is provided on the side of the coring cylinder away from the coring square plate, and the inner and outer walls of the sharp ring are provided with inclined surfaces, and the two inclined surfaces face opposite directions.

[0012] Preferably, the direction adjustment and rotation angle assembly includes a driving shaft and a driven shaft; the side of a T-shaped square plate is connected to the driving shaft, and the side of the other T-shaped square plate is connected to the driven shaft; a support frame is installed on the driving shaft and the driven shaft, and the support frame is arranged on the top surface of the mobile detection platform; a large gear is installed at the end of the driving shaft away from the T-shaped square plate, the large gear is meshed and connected to the rotating gear, and a linkage shaft is installed on the rotating gear, and a linkage base plate is provided on the linkage shaft, and the linkage base plate is connected to the support frame; a handle is provided on the side of the rotating gear away from the linkage base plate.

[0013] Preferably, a special-shaped square rod is installed on the side of the compound-moving column away from the driving bevel gear, and a fitting square plate is installed on the facing surfaces of the two special-shaped square rods. Fitting sliding rods are symmetrically arranged on the fitting square plate, one end of the fitting sliding rod is connected to a fitting limit plate, and the other end is connected to a shock absorbing block, and an energy-absorbing pad is installed on the side of the shock absorbing block close to the U-shaped frame plate; an extrusion spring is sleeved on the fitting sliding rod, one end of the extrusion spring is connected to the fitting square plate, and the other end is connected to the shock absorbing block.

[0014] Preferably, a limiting T-block is installed on the end of the driven shaft away from the driving motor, and concentric annular grooves are symmetrically provided on the top and bottom surfaces of the limiting T-block, and the concentric annular grooves extend to the edge of the limiting T-block on the side away from the driving motor; a concentric convex ring is slidably provided on the concentric annular groove, and a bending plate is installed on the side of the concentric convex ring away from the T-shaped square plate, and the bending plate is arranged on the support frame; a plurality of locking tooth grooves are provided on the inner side wall of the concentric convex ring.

[0015] Preferably, limiting square columns are installed on the opposite surfaces of the limiting T-block, and a prohibiting locking unit is also connected to the limiting square column; the prohibiting locking unit includes a limiting slide plate slidably arranged on the limiting square column; the limiting slide plate is symmetrically provided with linkage L rods, and the two linkage L rods are commonly connected to an arc-shaped connecting plate, and an arc-shaped tooth block is installed on the arc-shaped connecting plate, and the arc-shaped tooth block is coaxial with the center of the concentric convex ring and the driven rotating shaft; a plurality of locking tooth grooves on the concentric convex ring are located on the moving path of the arc-shaped tooth block; a limiting spring is sleeved on the limiting square column, and one end of the limiting spring is connected to the limiting T-block, and the other end is connected to the limiting slide plate.

[0016] The present invention also provides a method for detecting thickness of a road construction quality structural layer, comprising the following steps:

[0017] S001. Move the device to the measured area and adjust the angle of the coring cylinder into the soil according to the needs;

[0018] S002. Take out the road sample cores in the measurement area by using the position measuring and coring mechanism. The sample cores show the various structural layers in the roads in the area.

[0019] S003. By observing the scale inside the coring cylinder, the thickness of the structural layer can be detected.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) By turning the handle on the rotating gear, the rotating gear rotates and meshes with the large gear, thereby driving the active shaft to rotate, so that the coring square plate on the T-shaped square plate rotates, thereby driving the coring cylinder to rotate, so that the coring angle of the coring cylinder changes. The operator can then adjust the coring cylinder to a suitable coring angle according to virtual needs, so that the device can measure the thickness of the road structure layer at different angles, reducing the limitations of the device during use, while improving the use effect and practicality of the device; enabling the device to fully understand the thickness distribution of the structure layer, resulting in the device being able to collect more data to improve the measurement accuracy. Accuracy; It is worth mentioning that when the rotating gear drives the large gear to rotate, since the size of the rotating gear is smaller than the large gear, the transmission force can be increased, so that the device can more effectively adjust the angle of the sampling core; when the coring cylinder rotates through the coring square plate, it also drives the limit T block on the driven shaft to rotate, so that it rotates on the concentric convex ring through the symmetrical concentric ring grooves, and limits the rotation of the coring square plate to avoid shaking during rotation, thereby improving the stability of the coring cylinder when adjusting the angle, making the angle adjustment of the coring cylinder more accurate, thereby further improving the use effect of the device, and the accuracy of measuring the thickness of the structural layer is also improved;

[0022] (2) When the sharp ring on the coring cylinder contacts the ground, the rotating motor is started immediately, so that its output end drives the coring cylinder to rotate, so that it rotates during the descent process, thereby drilling into the soil, so that the cavity of the coring cylinder is filled with soil samples, so that the sample core can be taken out. It is worth mentioning that there is a valve at the opening of the coring cylinder (not shown in the figure) to prevent the sample core from falling during the ascent process. At the same time, the coring cylinder is made of transparent material. At this time, the operator can observe and understand the thickness value of the structural layer of the sample core by observing the scale on the outer wall of the coring cylinder, which reduces the limitations of the device when in use; it is worth mentioning that when the coring cylinder descends and drills into the soil, the sharp ring is provided to make its sharp surface contact with the ground, which can well break the soil, reduce the descending resistance of the coring cylinder, improve the coring efficiency and ensure the integrity of the sample; at the same time, during the coring process, the sharp ring can more easily cut off the root system or other obstacles, thereby improving the measurement efficiency of the device and reducing the time for coring;

[0023] (3) By pressing the limit slide, the limit slide moves to the upper limit of the limit square column, and the two limit slides move toward each other, so that the limit spring is in a buffer state, and then the arc-shaped tooth block on the limit slide no longer meshes with the locking tooth grooves on the concentric convex ring, thereby releasing the limit setting of the limit T block, so that the direction adjustment rotation angle assembly can normally adjust the entrapment angle of the coring cylinder; when the angle of the coring cylinder is adjusted, the limit slide is released, and the arc-shaped tooth block is reset and moved by the reset of the limit spring, so that it meshes with the locking tooth groove, thereby limiting the limit setting of the limit T block, preventing the coring cylinder from hitting the road structure at the current angle. When measuring the thickness of the layer, the angle of the coring cylinder changes due to non-human factors, which improves the measurement accuracy and reduces the limitations of the device during use, so that the use effect of the device is also improved; it is also worth mentioning that according to the concentric convex ring provided with a number of locking tooth grooves, for example, when the number of locking tooth grooves set on the concentric convex ring is, every time the arc-shaped tooth block on the limit T block leaves a locking tooth groove, it means that the angle of the coring cylinder is also increased or decreased by 1°, so that the accuracy of the angle of the coring cylinder during adjustment is also improved, and at the same time, the use effect of the anti-locking unit is improved;

[0024] (4) The special-shaped square rod drives the fitting square plate to reset and move, and the fitting sliding rod and the extrusion spring make the de-collision block move back and forth, so that several de-collision blocks continuously move toward and relative to each other, and continuously contact the side of the U-shaped frame plate when moving. When contacting the side of the U-shaped frame plate, the buffering force brought by the extrusion spring and the energy-absorbing pad can offset the impact force generated by the U-shaped frame plate. Because the U-shaped frame plate carries the coring cylinder down and the coring process will cause the U-shaped frame plate to suffer a large impact force, the force generated when it shakes is offset by the above buffering force, thereby improving the stability of the coring cylinder during the coring process, avoiding changes in the coring angle, and improving the measurement accuracy; at the same time, the reciprocating de-collision block continuously contacts the side of the U-shaped frame plate to avoid changes in its downward position, thereby improving the use effect of the device and reducing the limitations of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a cross-sectional exploded view of the displacement square groove of the present invention;

[0029] Figure 3This is a schematic diagram of the structure of the laminated square plate of the present invention;

[0030] Figure 4 It is a schematic diagram of the concentric convex ring structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the positioning cylinder structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the concentric annular groove structure of the present invention;

[0033] Figure 7 This is a cross-sectional view of the coring cylinder structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the arc-shaped gear block of the present invention;

[0035] Fig. 9 This is a schematic diagram of the structure of the clockwork spring of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure of the impact elimination block of the present invention;

[0037] In the figure: 1. Mobile test platform; 2. Coring square plate; 3. T-shaped square plate; 4. Displacement threaded shaft; 5. Displacement cross block; 6. U-shaped frame plate; 7. Fixed round rod; 8. Cable; 9. Fixed pulley; 10. Auxiliary base plate; 11. Winding pulley; 12. Rotating shaft; 13. Rotating bevel gear; 14. Spring; 15. Driving bevel gear; 16. Driving shaft; 17. Driving base plate; 18. Rotating cam; 19. Compound cylinder; 20. Guide plate; 21. Guide column; 22. Guide base plate; 23. Guide spring; 24. Displacement square groove; 25. Driving motor; 26. Driving frame; 27. Positioning square plate; 28. Positioning cylinder; 29. ​​Sampling Block; 30, mounting frame; 31, rotating motor; 32, coring cylinder; 33, sharp ring; 34, active shaft; 35, driven shaft; 36, support frame; 37, large gear; 38, rotating gear; 39, linkage shaft; 40, linkage base plate; 41, special-shaped square rod; 42, fitting square plate; 43, fitting slide rod; 44, impact relief block; 45, energy absorption pad; 46, extrusion spring; 47, limit T block; 48, concentric ring groove; 49, concentric convex ring; 50, bending plate; 51, locking tooth groove; 52, limiting square column; 53, limiting slide plate; 54, linkage L rod; 55, arc-shaped connecting plate; 56, arc-shaped tooth block; 57, limit spring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] Example, by Figures 1 to 10 The present invention comprises a mobile inspection platform 1, on which a position measuring and coring mechanism is connected, the position measuring and coring mechanism is used to take out a sample core from a road to observe the thickness of a road structure layer in the sample core; the position measuring and coring mechanism comprises a coring square plate 2, on both sides of which T-shaped square plates 3 are installed, and on the T-shaped square plate 3 is connected a direction adjustment and rotation angle assembly, and the direction adjustment and rotation angle assembly is used to adjust the coring angle of the device; a bearing is also provided at the center of the coring square plate 2, on which a displacement threaded shaft 4 is installed, and the output end of the displacement threaded shaft 4 faces the mobile inspection platform 1; a displacement cross block 5 is threadedly installed on the displacement threaded shaft 4, on both sides of the displacement cross block 5 are installed U-shaped frame plates 6, and grooves are provided on the opposite surfaces of the two U-shaped frame plates 6, and a fixed round rod 7 is provided on one of the grooves, and a circulating stopper is connected to the fixed round rod 7; a displacement square groove is provided on the end of the displacement threaded shaft 4 away from the mobile inspection platform 1 24, the displacement square groove 24 is connected to the output end of the driving motor 25, and the driving motor 25 is installed with a driving frame 26, and the driving frame 26 is arranged on the side of the coring square plate 2 away from the mobile detection platform 1; the displacement cross block 5 is installed with a positioning square plate 27 on all sides, and the positioning square plate 27 is installed with a positioning cylinder 28 on the side close to the coring square plate 2, and the positioning cylinder 28 is arranged through the coring square plate 2; the two U-shaped frame plates 6 are connected to the sampling block 29 together, and the sampling block 29 is symmetrically provided with a mounting frame 30, and the two mounting frames 30 are connected to the rotating motor 31 together, and the output end of the rotating motor 31 passes through the sampling block 29 and is connected to the coring cylinder 32, and the coring cylinder 32 is made of transparent material, and scales are arranged on all sides of the outer wall; the coring cylinder 32 is provided with a sharp ring 33 on the side away from the coring square plate 2, and the inner and outer walls of the sharp ring 33 are provided with inclined surfaces, and the two inclined surfaces face opposite directions;

[0040] The mobile inspection platform 1 is moved to the road area where the thickness of the structural layer needs to be measured. It is worth mentioning that the device is easy to move, so that the device can measure areas under different conditions at different positions; then, by starting the driving motor 25, its output end drives the displacement threaded shaft 4 to rotate through the displacement square groove 24, and then the threaded displacement cross block 5 moves toward the ground, so that it moves on the coring square plate 2 through the positioning cylinders 28 on the positioning square plates 27, which not only limits the movement of the displacement cross block 5, but also avoids the shaking of the coring cylinder 32 during movement; under the action of the U-shaped frame plate 6 and the sampling block 29, the coring cylinder 32 is driven to move toward the ground and contact it; when the sharp ring 33 on the coring cylinder 32 contacts the ground, the rotating motor 31 is started immediately, so that its output end drives the coring cylinder 32 to rotate, so that it rotates during the descent process, thereby drilling into the soil The core cylinder 32 is provided with a valve (not shown) at its opening to prevent the sample core from falling during the ascent. At the same time, the core cylinder 32 is made of transparent material. At this time, the operator can observe and understand the thickness of the structural layer of the sample core by observing the scale on the outer wall of the core cylinder 32, thereby reducing the limitations of the device when in use. It is worth mentioning that when the core cylinder 32 is lowered and drilled into the soil, the sharp ring 33 is provided to make its sharp surface contact with the ground, which can well break the soil and reduce the descending resistance of the core cylinder 32, thereby improving the efficiency of coring and ensuring the integrity of the sample. At the same time, during the coring process, the sharp ring 33 can more easily cut off the root system or other obstacles, thereby improving the measurement efficiency of the device and reducing the time for coring.

[0041] The circulating buffer stop of this embodiment includes a cable 8 and a fixed pulley 9; an auxiliary rotating shaft is installed on the fixed pulley 9, and auxiliary substrates 10 are installed at both ends of the auxiliary rotating shaft, and the two auxiliary substrates 10 are connected to both sides of the T-shaped square plate 3; one end of the cable 8 is connected to the fixed round rod 7, and the other end is connected to a winding pulley 11, and the height of the winding pulley 11 is lower than the fixed pulley 9; a rotating shaft 12 is installed on the winding pulley 11, and both ends of the rotating shaft 12 pass through the auxiliary substrate 10 and are connected to a rotating bevel gear 13; a clockwork spring 14 is installed on the rotating shaft 12, and the end point of the clockwork spring 14 is connected to the auxiliary substrate 10; the rotating bevel gear 13 is meshed and connected to a driving bevel gear 15, and a driving rotating shaft 16 is installed on the driving bevel gear 15, and a driving substrate 17 is provided on the driving rotating shaft 16, and the driving substrate 17 is connected to the auxiliary substrate 10; the end of the driving rotating shaft 16 away from the driving bevel gear 15 is connected to a rotating cam 18; the rotating cam 18 A reciprocating cylinder 19 is provided on the rotation path of the drive bevel gear 15, and a guide plate 20 is installed on the side of the reciprocating cylinder 19 close to the drive bevel gear 15. A guide column 21 is slidably provided on the guide plate 20, and guide base plates 22 are installed at both ends of the guide column 21. The guide base plate 22 is arranged on the drive base plate 17; a guide spring 23 is sleeved on the guide column 21, and one end of the guide spring 23 is connected to the guide base plate 22, and the other end is connected to the guide plate 20; the reciprocating cylinder 19 is away from the drive bevel gear A special-shaped square rod 41 is installed on one side of 15, and a fitting square plate 42 is installed on the facing surface of the two special-shaped square rods 41. Fitting slide bars 43 are symmetrically arranged on the fitting square plate 42. One end of the fitting slide bar 43 is connected to a fitting limit plate, and the other end is connected to a shock absorbing block 44. An energy absorbing pad 45 is installed on the side of the shock absorbing block 44 close to the U-shaped frame plate 6; an extrusion spring 46 is sleeved on the fitting slide bar 43, and one end of the extrusion spring 46 is connected to the fitting square plate 42, and the other end is connected to the shock absorbing block 44;

[0042] When the U-shaped frame plate 6 moves downward, it will drive the fixed round rod 7 to move, and the winding pulley 11 will be in a state of releasing and rotating through the cable 8 and the fixed pulley 9, and then the spring spring 14 on the rotating shaft 12 will be in a buffer state, so that when it is reset, it can help the winding pulley 11 to reset and rotate and rewind the cable 8; thereby, the rotating rotating bevel gear 13 is engaged with the driving bevel gear 15 to rotate, and the rotating cam 18 is rotated under the action of the driving shaft 16. It is worth mentioning that the operator can adjust the size of the rotating bevel gear 13 and the driving bevel gear 15 according to different needs, so that the speed of the rotating cam 18 changes differently; and the double-acting cylinder 19 is located on the rotation path of the rotating cam 18. When it rotates, it will contact the side wall of the double-acting cylinder 19, so that it will move on the upper limit position of the guide column 21 through the guide plate 20, so that the guide spring 23 is in a buffer state; when the rotating cam 18 no longer contacts the side wall of the double-acting cylinder 19, it will drive the double-acting cylinder 1 through the reset of the guide spring 23 The U-shaped frame plate 6 is then moved back and forth to the left by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44. The support rod 43 is moved back and forth to the right by the support rod 43 and the support rod 44.

[0043] The direction adjustment and rotation angle assembly of this embodiment includes a driving shaft 34 and a driven shaft 35; the side of one T-shaped square plate 3 is connected to the driving shaft 34, and the side of the other T-shaped square plate 3 is connected to the driven shaft 35; a support frame 36 is installed on the driving shaft 34 and the driven shaft 35, and the support frame 36 is arranged on the top surface of the mobile detection platform 1; a large gear 37 is installed at one end of the driving shaft 34 away from the T-shaped square plate 3, and the large gear 37 is meshed and connected to the rotating gear 38, and a linkage shaft 39 is installed on the rotating gear 38, and a linkage base plate 40 is provided on the linkage shaft 39, and the linkage base plate 40 is connected to the support frame 3 6 connection; a rotating handle is provided on the side of the rotating gear 38 away from the linkage base plate 40; a limit T block 47 is installed on the end of the driven rotating shaft 35 away from the driving motor 25, and concentric annular grooves 48 are symmetrically provided on the top and bottom surfaces of the limit T block 47, and the concentric annular grooves 48 extend to the edge of the limit T block 47 away from the driving motor 25; a concentric convex ring 49 is slidably provided on the concentric annular groove 48, and a bending plate 50 is installed on the side of the concentric convex ring 49 away from the T-shaped square plate 3, and the bending plate 50 is arranged on the support frame 36; a plurality of locking tooth grooves 51 are provided on the inner side wall of the concentric convex ring 49;

[0044] When the device measures the thickness of the road structure layer by operating the position measuring and coring mechanism, in some special cases (for example: the thickness of the structure layer has obvious changes, resulting in higher measurement accuracy requirements or the measured area is deformed and / or damaged), the device needs to measure the thickness of the road structure layer at different angles. At this time, the rotating handle on the rotating gear 38 can be rotated to rotate the rotating gear 38 and engage the large gear 37 to rotate, thereby driving the active rotating shaft 34 to rotate, so that the coring square plate 2 on the T-shaped square plate 3 rotates, thereby driving the coring cylinder 32 to rotate, so that the coring angle of the coring cylinder 32 changes. The operator can then adjust the coring cylinder 32 to a suitable coring angle according to virtual needs, so that the device can measure the thickness of the road structure layer at different angles, reducing the limitations of the device when in use, while improving the use effect and actual use of the device. Practicality; the device can fully understand the thickness distribution of the structural layer, so that the device can collect more data to improve the measurement accuracy; it is worth mentioning that when the rotating gear 38 drives the large gear 37 to rotate, since the size of the rotating gear 38 is smaller than the large gear 37, the transmission force can be increased, so that the device can more effectively adjust the angle of the sampling core; when the coring cylinder 32 rotates through the coring square plate 2, it also drives the limit T block 47 on the driven shaft 35 to rotate, so that it rotates on the concentric convex ring 49 through the symmetrical concentric annular grooves 48, and limits the rotation of the coring square plate 2 to avoid shaking during rotation, thereby improving the stability of the coring cylinder 32 when adjusting the angle, making the angle adjustment of the coring cylinder 32 more accurate, thereby further improving the use effect of the device, and improving the accuracy of measuring the thickness of the structural layer.

[0045] The limiting square columns 52 are installed on the opposite surfaces of the limiting T block 47 of this embodiment, and the limiting square columns 52 are also connected to a prohibition locking unit; the prohibition locking unit includes a limiting slide plate 53 slidably arranged on the limiting square column 52; the limiting slide plate 53 is symmetrically provided with linkage L rods 54, and the two linkage L rods 54 are commonly connected to an arc-shaped connecting plate 55, and an arc-shaped tooth block 56 is installed on the arc-shaped connecting plate 55, and the arc-shaped tooth block 56 is coaxial with the center of the circle of the concentric convex ring 49 and the driven rotating shaft 35; the plurality of locking tooth grooves 51 on the concentric convex ring 49 are located on the moving path of the arc-shaped tooth block 56; the limiting square column 52 is sleeved with a limiting spring 57, one end of the limiting spring 57 is connected to the limiting T block 47, and the other end is connected to the limiting slide plate 53;

[0046] When it is necessary to operate the direction rotation angle adjustment assembly to adjust the coring angle of the coring cylinder 32, first press the limit slide plate 53 to make it move within the upper limit position of the limit square column 52, and the two limit slide plates 53 move toward each other, so that the limit spring 57 is in a buffering state, and then the arc-shaped tooth block 56 on the limit slide plate 53 is no longer engaged with the several locking tooth grooves 51 on the concentric convex ring 49, thereby releasing the limit setting of the limit T block 47, so that the direction rotation angle adjustment assembly can normally adjust the entrapment angle of the coring cylinder 32; when the angle of the coring cylinder 32 is adjusted, the limit slide plate 53 is released, and the reset of the limit spring 57 drives the arc-shaped tooth block 56 to reset and move, so that it is engaged with the locking tooth groove 51, thereby limiting the limit setting of the limit T block 47, This avoids changes in the angle of the coring cylinder 32 due to non-human factors when the coring cylinder 32 measures the thickness of the road structure layer at the current angle, thereby improving the measurement accuracy and reducing the limitations of the device during use, thereby improving the use effect of the device; it is also worth mentioning that according to the concentric convex ring 49, there are a number of locking grooves 51. For example, when the number of locking grooves 51 arranged on the concentric convex ring 49 is 360, each time the arc-shaped tooth block 56 on the limiting T block 47 leaves a locking groove 51, it means that the angle of the coring cylinder 32 also increases or decreases by 1°, so that the accuracy of the angle of the coring cylinder 32 during adjustment is also improved, and at the same time, the use effect of the anti-locking unit is improved.

[0047] The present invention also provides a method for detecting thickness of a road construction quality structural layer, comprising the following steps:

[0048] S001, move the device to the measurement area, and adjust the entry angle of the coring cylinder 32 according to the needs;

[0049] S002. Take out the road sample cores in the measurement area by using the position measuring and coring mechanism. The sample cores show the various structural layers in the roads in the area.

[0050] S003. By observing the scale inside the coring cylinder 32, the thickness value of the structural layer can be detected.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road construction quality structural layer thickness detection device, characterized in that: The mobile detection platform (1) is connected to a position measuring and coring mechanism, and the position measuring and coring mechanism is used to take out a sample core from a road to observe the thickness of a road structure layer in the sample core; The positioning coring mechanism comprises a coring square plate (2), T-shaped square plates (3) are installed on both sides of the coring square plate (2), and the T-shaped square plate (3) is connected with a direction adjustment and rotation angle assembly, which is used to adjust the coring angle of the device; A bearing is also provided at the center of the coring square plate (2), a displacement threaded shaft (4) is mounted on the bearing, and the output end of the displacement threaded shaft (4) faces the movable detection platform (1); a displacement cross block (5) is threadedly mounted on the displacement threaded shaft (4), and U-shaped frame plates (6) are mounted on both sides of the displacement cross block (5), and grooves are provided on the opposite surfaces of the two U-shaped frame plates (6), and a fixed round rod (7) is provided on one of the grooves, and a circulating buffer stopper is connected to the fixed round rod (7); The circulating buffer stopper comprises a cable (8) and a fixed pulley (9); an auxiliary rotating shaft is mounted on the fixed pulley (9), and auxiliary base plates (10) are mounted at both ends of the auxiliary rotating shaft, and the two auxiliary base plates (10) are connected to both sides of the T-shaped square plate (3); one end of the cable (8) is connected to the fixed round rod (7), and the other end is connected to a winding pulley (11), and the height of the winding pulley (11) is lower than that of the fixed pulley (9); a rotating shaft (12) is mounted on the winding pulley (11), and both ends of the rotating shaft (12) pass through the auxiliary base plate (10) and are connected to a rotating bevel gear (13); a spring (14) is mounted on the rotating shaft (12), and the end points of the spring (14) are connected to the auxiliary base plate (10); The rotating bevel gear (13) is meshedly connected with the driving bevel gear (15), and a driving shaft (16) is mounted on the driving bevel gear (15), and a driving substrate (17) is mounted on the driving shaft (16), and the driving substrate (17) is connected to the auxiliary substrate (10); the end of the driving shaft (16) away from the driving bevel gear (15) is connected to a rotating cam (18); a reciprocating cylinder (19) is arranged on the rotation path of the rotating cam (18), and a guide plate (20) is mounted on the side of the reciprocating cylinder (19) close to the driving bevel gear (15), and a guide column (21) is slidably mounted on the guide plate (20), and guide substrates (22) are mounted at both ends of the guide column (21), and the guide substrate (22) is arranged on the driving substrate (17); a guide spring (23) is sleeved on the guide column (21), and one end of the guide spring (23) is connected to the guide substrate (22), and the other end is connected to the guide plate (20); A displacement square groove (24) is provided on one end of the displacement threaded shaft (4) away from the movable detection platform (1); the displacement square groove (24) is connected to the output end of a driving motor (25); a driving frame (26) is mounted on the driving motor (25); and the driving frame (26) is arranged on a side of the coring square plate (2) away from the movable detection platform (1); The displacement cross block (5) is provided with a positioning square plate (27) on the four sides thereof, and a positioning cylinder (28) is provided on the side of the positioning square plate (27) close to the coring square plate (2), and the positioning cylinder (28) is arranged through the coring square plate (2); the two U-shaped frame plates (6) are connected to a sampling block (29), and mounting brackets (30) are symmetrically arranged on the sampling block (29), and the two mounting brackets (30) are connected to a rotating motor (31) on the four sides thereof, and the output end of the rotating motor (31) passes through the sampling block (29) and is connected to a coring cylinder (32), and the coring cylinder (32) is made of a transparent material, and scales are provided on the four sides of the outer wall; a sharp ring (33) is provided on the side of the coring cylinder (32) away from the coring square plate (2), and the inner and outer walls of the sharp ring (33) are both provided with inclined surfaces, and the two inclined surfaces face opposite directions; A special-shaped square rod (41) is installed on the side of the compound-moving column (19) away from the driving bevel gear (15), and a fitting square plate (42) is installed on the facing surfaces of the two special-shaped square rods (41). Fitting sliding rods (43) are symmetrically arranged on the fitting square plate (42), one end of the fitting sliding rod (43) is connected to a fitting limit plate, and the other end is connected to a shock absorbing block (44), and an energy absorbing pad (45) is installed on the side of the shock absorbing block (44) close to the U-shaped frame plate (6); an extrusion spring (46) is sleeved on the fitting sliding rod (43), one end of the extrusion spring (46) is connected to the fitting square plate (42), and the other end is connected to the shock absorbing block (44).

2. A road construction quality structural layer thickness detection device according to claim 1, characterized in that: The direction-adjusting rotation angle assembly comprises a driving rotating shaft (34) and a driven rotating shaft (35); the side surface of one T-shaped square plate (3) is connected to the driving rotating shaft (34), and the side surface of the other T-shaped square plate (3) is connected to the driven rotating shaft (35); a support frame (36) is installed on the driving rotating shaft (34) and the driven rotating shaft (35), and the support frame (36) is arranged on the top surface of the mobile detection platform (1); a large gear (37) is installed on the end of the driving rotating shaft (34) away from the T-shaped square plate (3), and the large gear (37) is meshedly connected to a rotating gear (38), and a linkage rotating shaft (39) is installed on the rotating gear (38), and a linkage base plate (40) is arranged on the linkage rotating shaft (39), and the linkage base plate (40) is connected to the support frame (36); a rotating handle is provided on the side of the rotating gear (38) away from the linkage base plate (40).

3. A road construction quality structural layer thickness detection device according to claim 2, characterized in that: A limit T block (47) is installed at one end of the driven shaft (35) away from the driving motor (25), and concentric annular grooves (48) are symmetrically arranged on the top and bottom surfaces of the limit T block (47), and the side of the concentric annular groove (48) away from the driving motor (25) extends to the edge of the limit T block (47); a concentric convex ring (49) is slidably arranged on the concentric annular groove (48), and a bending plate (50) is installed on the side of the concentric convex ring (49) away from the T-shaped square plate (3), and the bending plate (50) is arranged on the support frame (36); and a plurality of locking tooth grooves (51) are arranged on the inner side wall of the concentric convex ring (49).

4. A road construction quality structural layer thickness detection device according to claim 3, characterized in that: The limiting square columns (52) are installed on the opposite surfaces of the limiting T block (47), and the limiting square columns (52) are also connected to a prohibition locking unit; the prohibition locking unit comprises a limiting slide plate (53) slidably arranged on the limiting square column (52); the limiting slide plate (53) is symmetrically provided with linkage L rods (54), and the two linkage L rods (54) are commonly connected to an arc-shaped connecting plate (55), and an arc-shaped tooth block (56) is installed on the arc-shaped connecting plate (55), and the arc-shaped tooth block (56) is coaxial with the center of the circle of the concentric convex ring (49) and the driven rotating shaft (35); a plurality of locking tooth grooves (51) on the concentric convex ring (49) are located on the moving path of the arc-shaped tooth block (56); the limiting square column (52) is sleeved with a limiting spring (57), one end of the limiting spring (57) is connected to the limiting T block (47), and the other end is connected to the limiting slide plate (53).

5. A method for detecting thickness of a road construction quality structural layer, using the road construction quality structural layer thickness detection device as claimed in claim 4, characterized in that: Includes steps: S001, moving the device to the measurement area, and adjusting the soil entry angle of the coring cylinder (32) according to the needs; S002. Take out the road sample cores in the measurement area by using the position measuring and coring mechanism. The sample cores show the various structural layers in the roads in the area. S003. By observing the scale inside the coring cylinder (32), the thickness of the structural layer can be detected.

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