Asphalt structure layer thickness detection device

Abstract

The utility model discloses a thickness detection device for an asphalt structure layer. The thickness detection device is characterized in that a lifting mechanism is vertically mounted on a bearing frame; the sampling mechanism is arranged on the lifting mechanism and comprises a mounting table arranged on the lifting mechanism, a first driving motor is mounted on the mounting table, the first driving motor is in transmission connection with a coring cylinder, and cutter teeth are arranged at the edge of a lower opening of the coring cylinder in the circumferential direction; a through hole is transversely formed in the side wall of the upper end of the coring barrel, the clamping mechanism comprises fixing blocks fixedly arranged at the top of the coring barrel and evenly distributed in the circumferential direction, sliding grooves are formed in the fixing blocks, L-shaped clamping rods are arranged in the sliding grooves in a sliding mode, and the vertical ends of the clamping rods are located in the through hole; a first spring used for resetting the clamping rod is arranged between the horizontal end of the clamping rod and the inner wall of the sliding groove. The ejection mechanism comprises a guide plate movably arranged in the coring cylinder. The coring device has the advantages that a detected core and the coring cylinder can be taken out of the ground together, and the core in the coring cylinder can be taken out conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an asphalt structure layer thickness detection device. Background Art

[0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed into mineral materials. Asphalt binder improves the ability of paving aggregate to resist damage to the road surface caused by traffic and natural factors, making the road surface smooth, dust-free, impermeable and durable. Therefore, asphalt pavement is a high-grade pavement widely used in road construction. The asphalt structural layer of asphalt pavement itself belongs to the category of flexible pavement, but its base layer can also use rigid cement concrete or semi-rigid hydraulic materials in addition to flexible materials.

[0003] When testing the thickness of the structural layer of asphalt on a paved asphalt road, the solidified asphalt layer is thick and it is inconvenient to test the thickness of the asphalt. For example, some municipal roads generally use two layers of asphalt, one layer of 4 cm and one layer of 6 cm, a total of 10 cm. Therefore, when testing the asphalt layer, a drilling device is usually used to drill holes downward on the road surface to take cores, and then the laying thickness of the asphalt layer is tested. A Chinese patent document discloses a traffic engineering asphalt pavement thickness detection device, and the patent publication number is: CN216523792U. The scheme first moves freely through a mobile mechanism driving device, and after moving to a certain position, the drilling mechanism is driven to rise and fall by a lifting mechanism, so as to adjust the drilling depth of the drilling mechanism. At the same time, the asphalt pavement is drilled by the drilling mechanism, so as to sample the asphalt pavement, and then the thickness of the asphalt pavement is measured, which can realize the detection of the asphalt thickness of the road surface at any position.

[0004] However, in this solution, since the ground is drilled vertically, when drilling the asphalt layer, the drilled test core is likely to automatically slide out of the coring barrel under the action of gravity, or the test core is stuck, making it difficult to remove the test core from the coring barrel. At the same time, the test core is likely to be retained in the hole, making it inconvenient to remove, thereby causing inconvenience in coring. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides an asphalt structure layer thickness detection device, which can solve the problem of inconvenient coring.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: an asphalt structural layer thickness detection device, characterized in that it includes: a load-bearing frame, on which a lifting mechanism is vertically installed; a sampling mechanism, which is arranged on the lifting mechanism, and the sampling mechanism includes a mounting platform arranged on the lifting mechanism, on which a first driving motor is installed, and the first driving motor is connected to a coring barrel in a transmission manner, and a knife tooth is circumferentially arranged at the edge of the lower mouth of the coring barrel; a clamping mechanism, a through hole is transversely opened on the upper end side wall of the coring barrel, and the through hole extends to the top of the coring barrel, and the clamping mechanism includes a fixed block fixedly arranged on the top of the coring barrel and uniformly distributed along the circumferential direction, a slide groove is provided in the fixed block, and an L-shaped clamping rod is slidably arranged in the slide groove, the vertical end of the clamping rod is located in the through hole, and a first spring for resetting the clamping rod is arranged between the horizontal end of the clamping rod and the inner wall of the slide groove; an ejection mechanism, and the ejection mechanism includes a guide plate movably arranged inside the coring barrel.

[0007] The sampling mechanism can conveniently sample the asphalt structure layer through the design of the mounting table, the first drive motor and the coring barrel. The first drive motor drives the coring barrel to drill the asphalt layer, providing a convenient operation method; the clamping mechanism can stably clamp the test core in the coring barrel through the combination of the fixed block, the clamping rod and the spring, and has a reset function to ensure the accuracy and stability of the coring; the ejection mechanism can eject the coring sample in the coring barrel through the movable setting of the guide plate, which is convenient for subsequent analysis and measurement.

[0008] Furthermore, a vertical groove is formed on the side wall of the core barrel, a collar is threadedly provided on the outer wall of the core barrel, a movable plate is also provided inside the core barrel above the guide plate, the movable plate passes through the vertical groove and is connected to the collar, a guide rod is passed through the movable plate, the bottom of the guide rod is connected to the guide plate, a second spring is sleeved on the guide rod, and the second spring is located between the movable plate and the guide plate.

[0009] The design of the vertical groove and the collar on the side wall of the core barrel allows the guide plate to move along the core barrel by rotating the collar, thereby pushing the detection core in the core barrel out of the barrel; the setting of the moving plate and the guide rod enables the moving plate in the core barrel to move up and down smoothly in the vertical groove.

[0010] Furthermore, the lifting mechanism includes a vertical rod arranged on the supporting frame, a lifting plate is slidably mounted on the vertical rod, the mounting platform is arranged on one side of the lifting plate, a top plate is arranged on the top of the vertical rod, a threaded rod is vertically rotatably arranged on the top plate, and the bottom end of the threaded rod passes through and is threadedly connected to the mounting platform.

[0011] The setting of the lifting mechanism realizes the vertical lifting of the device through the combination of vertical rods, lifting plates and top plates, which is convenient for the detection of the thickness of the asphalt structure layer at different heights; the connection between the threaded rod and the second drive motor can realize precise control of the lifting plate, thereby improving the operating accuracy and stability of the device.

[0012] Furthermore, the top end of the threaded rod is connected to a second drive motor, and the second drive motor is installed on the top of the top plate.

[0013] The second driving motor is used to control the rotation of the threaded rod, so that the automatic lifting and lowering of the automatic sampling mechanism can be realized, which is convenient for operation.

[0014] Furthermore, a rotating shaft is provided at the top end of the coring barrel, and the rotating shaft passes through the mounting platform and is connected to an output shaft of the first driving motor.

[0015] Furthermore, a protective cover is provided on the movable sleeve of the coring barrel.

[0016] The protective cover on the core barrel can effectively isolate the core barrel and the core sample, prevent the interference of impurities such as gravel or water during drilling, and avoid splashing and contamination of the surrounding asphalt road surface or inspection personnel. That is, the protective cover can block the influence of dust, water droplets and other factors on the external environment. At the same time, the design of the protective cover can be easily disassembled and cleaned.

[0017] Furthermore, the top of the protective cover is rotatably disposed on a rotating shaft, the bottom of the protective cover is connected to a ring-shaped gasket, a support rod is vertically penetrated through the top of the protective cover, the upper end of the support rod passes through the top of the protective cover, and the lower end is connected to the ring-shaped gasket, and a second spring for resetting the protective cover is sleeved on the support rod.

[0018] The top end of the protective cover is rotatably arranged on a rotating shaft, and the direction and angle of the protective cover can be flexibly adjusted by rotating the rotating shaft.

[0019] In summary, the utility model has the advantages that the detected core can be taken out of the ground together with the coring tube, and the core in the coring tube can be conveniently taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an asphalt structure layer thickness detection device.

[0021] Figure 2 This is a cross-sectional view of the core barrel.

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0023] The accompanying drawings are described as follows: 1. Carrying frame; 2. Lifting mechanism; 21. Vertical rod; 22. Lifting plate; 23. Top plate; 24. Threaded rod; 25. Second drive motor; 3. Sampling mechanism; 31. Mounting table; 32. First drive motor; 33. Coring barrel; 331. Cutting teeth; 332. Through hole; 333. Vertical slot; 34. Rotating shaft; 4. Clamping mechanism; 41. Fixed block; 42. Clamping rod; 43. First spring; 5. Ejecting mechanism; 51. Guide plate; 52. Ring; 53. Moving plate; 531. Guide rod; 54. Second spring; 6. Protective cover; 61. Ring gasket; 62. Support rod. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the embodiments.

[0025] When implementing: Figures 1 to 3 As shown, an asphalt structural layer thickness detection device comprises: a bearing frame 1, on which a lifting mechanism 2 is vertically installed; a sampling mechanism 3, which is arranged on the lifting mechanism 2, and the sampling mechanism 3 comprises a mounting platform 31 arranged on the lifting mechanism 2, on which a first driving motor 32 is installed, and the first driving motor 32 is connected to a coring barrel 33 in a transmission manner, and a knife tooth 331 is circumferentially arranged at the lower edge of the coring barrel 33; a clamping mechanism 4, on which a through hole 33 is horizontally opened on the upper side wall of the coring barrel 33 32, the through hole 332 extends to the top of the core barrel 33, the clamping mechanism 4 includes a fixed block 41 fixedly arranged at the top of the core barrel 33 and uniformly distributed along the circumferential direction, the fixed block 41 has a slide groove, an L-shaped clamping rod 42 is slidably arranged in the slide groove, the vertical end of the clamping rod 42 is located in the through hole 332, and a first spring 43 for resetting the clamping rod 42 is arranged between the horizontal end of the clamping rod 42 and the inner wall of the slide groove; an ejection mechanism 5, the ejection mechanism 5 includes a guide plate 51 movably arranged inside the core barrel 33. A rotating shaft 34 is arranged at the top of the core barrel 33, and the rotating shaft 34 passes through the mounting table 31 and is connected to the output shaft of the first drive motor 32.

[0026] By setting up the supporting frame 1 and the lifting mechanism 2, the horizontal movement of the asphalt structure layer thickness detection device and the vertical movement of the sampling mechanism 3 are realized, which is convenient for detection at different positions, wherein an angle wheel with a locking function is installed at the bottom of the supporting frame 1, and a handrail is installed on one side; the sampling mechanism 3 can conveniently perform sampling of the asphalt structure layer through the design of the mounting platform 31, the first driving motor 32 and the coring barrel 33, specifically, the driving motor drives the coring barrel 33 to rotate, and gradually makes the coring barrel 33 close to the asphalt pavement until the coring barrel 33 reaches a certain depth and the detection core can be taken out; in this process, the detection core is clamped by the clamping mechanism 4, and the clamping mechanism 4 is clamped by the fixing block 41 and the clamping rod The combination of 42 and the spring can stably clamp the core barrel 33 and has a reset function. Specifically, the horizontal end of the clamping rod 42 is slidably connected to the fixed block 41, and the spring gives the clamping rod 42 an elastic force in the axial direction of the core barrel 33, and causes the inner wall of the vertical end of the clamping rod 42 to be misaligned with the inner wall of the core barrel 33. When the core barrel 33 descends to a certain depth, the upper end of the detection core is clamped by the clamping rod 42, so that the vertical end of the clamping rod 42 passes through the through hole 332 and is clamped on the outer wall of the detection core. Among them, two clamping rods 42 are relatively arranged to ensure the accuracy and stability of coring; the ejection mechanism 5 can eject the coring sample in the core barrel 33 through the movable setting of the guide plate 51, which is convenient for subsequent analysis and measurement.

[0027] During implementation, a vertical groove 333 is provided on the side wall of the core tube 33, and a ring 52 is threadedly sleeved on the outer wall of the core tube 33. A movable plate 53 is also provided inside the core tube 33 above the guide plate 51. The movable plate 53 passes through the vertical groove 333 and is connected to the ring 52. A guide rod 531 is passed through the movable plate 53, and the bottom of the guide rod 531 is connected to the guide plate 51. A second spring 54 is sleeved on the guide rod 531, and the second spring 54 is located between the movable plate 53 and the guide plate 51. The design of the vertical groove 333 on the side wall of the core barrel 33 and the ring 52 can make the sliding connection between the core barrel 33 and the guide plate 51 and the movable plate 53 more stable, thereby improving the stability and reliability of the device; the setting of the movable plate 53 and the guide rod 531 enables the movable plate 53 in the core barrel 33 to move up and down smoothly in the vertical groove 333. Specifically, by rotating the ring sleeve, the guide plate 51 is moved in the core barrel 33 to push out the detection core, wherein the ring sleeve is located on the outside of the core barrel 33 and the clamping rod 42, and the vertical groove 333 is arranged on the side wall of the core barrel 33, and two are arranged opposite to each other.

[0028] During implementation, the lifting mechanism 2 includes a vertical rod 21 arranged on the carrier frame 1, a lifting plate 22 is slidably mounted on the vertical rod 21, the mounting platform 31 is arranged on one side of the lifting plate 22, a top plate 23 is arranged on the top of the vertical rod 21, a threaded rod 24 is vertically rotatably arranged on the top plate 23, and the bottom end of the threaded rod 24 passes through and is threadedly connected to the mounting platform 31. Specifically, the top end of the threaded rod 24 is connected to the second drive motor 25, and the second drive motor 25 is installed on the top of the top plate 23. The setting of the lifting mechanism 2 realizes the vertical lifting of the device through the combination of the vertical rod 21, the lifting plate 22 and the top plate 23; the connection between the threaded rod 24 and the second drive motor 25 can realize the precise control of the lifting plate 22, thereby improving the operating accuracy and stability of the device.

[0029] During implementation, a protective cover 6 is movably sleeved on the core barrel 33. The top of the protective cover 6 is rotatably set on the rotating shaft 34, the bottom of the protective cover 6 is connected to an annular gasket 61, and a support rod 62 is vertically penetrated through the top of the protective cover 6. The upper end of the support rod 62 passes through the top of the protective cover 6, and the lower end is connected to the annular gasket 61. The support rod 62 is sleeved with a second spring 54 for resetting the protective cover 6. The top of the protective cover 6 is rotatably set on the rotating shaft 34, which can prevent the protective cover 6 from rotating when drilling the detection core.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for detecting the thickness of an asphalt structure layer, characterized in that: include: A load-bearing frame, on which a lifting mechanism is vertically mounted; A sampling mechanism, the sampling mechanism is arranged on the lifting mechanism, the sampling mechanism comprises a mounting platform arranged on the lifting mechanism, a first driving motor is installed on the mounting platform, the first driving motor is connected to the coring barrel in a transmission manner, and a knife tooth is arranged at the lower edge of the coring barrel along the circumferential direction; A clamping mechanism, wherein a through hole is transversely opened on the upper side wall of the core barrel, and the through hole extends to the top of the core barrel, and the clamping mechanism comprises a fixed block fixedly arranged on the top of the core barrel and uniformly distributed along the circumference, wherein the fixed block has a slide groove, and an L-shaped clamping rod is slidably arranged in the slide groove, and the vertical end of the clamping rod is located in the through hole, and a first spring is arranged between the horizontal end of the clamping rod and the inner wall of the slide groove; The ejection mechanism comprises a guide plate movably arranged inside the core barrel.

2. The asphalt structure layer thickness detection device according to claim 1, characterized in that: A vertical groove is formed on the side wall of the core taking tube, a collar is threadedly provided on the outer wall of the core taking tube, a movable plate is also provided inside the core taking tube above the guide plate, the movable plate passes through the vertical groove and is connected to the collar, a guide rod is passed through the movable plate, the bottom of the guide rod is connected to the guide plate, a second spring is sleeved on the guide rod, and the second spring is located between the movable plate and the guide plate.

3. The asphalt structure layer thickness detection device according to claim 1, characterized in that: The lifting mechanism includes a vertical rod arranged on the supporting frame, a lifting plate is slidably mounted on the vertical rod, the mounting platform is arranged on one side of the lifting plate, a top plate is arranged on the top of the vertical rod, a threaded rod is vertically rotatably arranged on the top plate, and the bottom end of the threaded rod passes through and is threadedly connected to the mounting platform.

4. The asphalt structure layer thickness detection device according to claim 3, characterized in that: The top end of the threaded rod is connected to a second driving motor, and the second driving motor is installed on the top of the top plate.

5. The asphalt structure layer thickness detection device according to claim 3, characterized in that: A rotating shaft is provided at the top end of the coring barrel, and the rotating shaft passes through the mounting platform and is connected to the output shaft of the first driving motor.

6. The asphalt structure layer thickness detection device according to claim 5, characterized in that: A protective cover is provided on the movable sleeve of the core taking cylinder.

7. The asphalt structure layer thickness detection device according to claim 6, characterized in that: The top of the protective cover is rotatably arranged on a rotating shaft, the bottom of the protective cover is connected with an annular gasket, a support rod is vertically passed through the top of the protective cover, the upper end of the support rod passes through the top of the protective cover, and the lower end is connected to the annular gasket, and a second spring for resetting the protective cover is sleeved on the support rod.

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