A road administration construction pavement detection system and method

Abstract

The present invention relates to the technical field of road surface detection, specifically a road administration construction road surface detection system and method; the inner tube drives the articulated plate to move downward synchronously. Since the articulated plate corresponds to the arc-shaped groove opened on the supplementary cutting block, when the articulated plate moves downward, it will enter the inside of the arc-shaped groove. And under the guidance of the arc-shaped groove, the articulated plate will rotate on the inner tube. As the inner tube moves downward, the articulated plate will extend out through the arc-shaped groove from the gap between the road core sample and the arc-shaped groove. Since the lower end of the road is mostly paved with soil layer or sand layer, the articulated plate will penetrate into the soil layer or sand layer below the road surface and is located below the road core sample at the same time. When the tubular drill moves upward to take out the road core sample, the articulated plate will support the lower end of the road core sample, which is more convenient for taking out the road core sample and improves the detection efficiency of the road core sample.

Description

Technical Field

[0001] The present invention relates to the technical field of road surface detection, and specifically to a road administration construction road surface detection system and method. Background Art

[0002] After road construction, in order to ensure the construction quality of the road surface, it is usually necessary to detect various performances of the road surface. The detection can ensure that the road construction meets the requirements of design and specifications, and avoid subsequent problems caused by poor construction quality, such as road surface cracking, settlement, etc.;

[0003] Reasonable detection and maintenance can extend the service life of the road surface and reduce the repair or reconstruction costs due to early damage;

[0004] At present, the detection of the road surface includes various tests, such as the friction coefficient, compressive coefficient of the road surface, and road surface compaction degree, etc.;

[0005] For the above-mentioned test of the road surface compaction degree, a core drill is mostly used. The core drill is a core sampling drill for the road surface, which enables core samples to be drilled from the road surface structure. These core samples can then be used for laboratory analysis to evaluate the thickness, strength, compaction degree, and other physical and chemical properties of the road surface.

[0006] In the process of using the core drill to detect the road surface at present, after the drill bit of the core drill is lifted, it is often difficult to take out the core sample drilled on the road surface. To solve this problem, the existing method is usually to improve the drill bit of the core drill. In order to facilitate the extraction of the core sample, holes, grooves, etc. are mostly opened on the drill bit of the core drill, and structures are added in the holes and grooves to facilitate the extraction of the core sample. However, when the drill bit of the core drill drills the road surface, it rotates and drills downward, and the road surface is mostly a cement or asphalt road surface, which is relatively hard. When holes and grooves are opened on the drill bit of the core drill; since the drill bit design is based on the strength of its overall structure to withstand axial pressure and torque; opening structures such as holes and grooves on the drill bit will damage this strength, making the drill bit more likely to deform, bend, and break, reducing the service life of the drill bit of the core drill.

[0007] In summary, to solve the technical problems proposed in this article, the present invention proposes a road administration construction road surface detection system and method. Summary of the Invention

[0008] The present invention proposes a road administration construction road surface detection system. The detection system includes a core drill, and the core drill includes a frame, a sliding cylinder, a lifting plate, a fixing plate, a screw rod, and a support member; the sliding cylinder is arranged on the frame; both ends of the lifting plate are slidably connected to the outside of the sliding cylinder; the fixing plate is arranged at the upper end of the sliding cylinder; the screw rod is arranged on the fixing plate, and the lower end of the screw rod penetrates through the middle of the lifting plate; the support member is arranged on the side of the lifting plate; the core drill further includes:

[0009] A tubular drill bit is installed below the lifting plate, and the upper end of the tubular drill bit is connected to a driving device provided on the lifting plate; the connection between the upper end of the tubular drill bit and the driving device is hollow, and a water injection port is provided on the driving device, and the water injection port is communicated with the inside of the tubular drill bit through the driving device;

[0010] A main telescopic member is installed inside the tubular drill bit; the output end of the main telescopic member is vertically downward;

[0011] A sliding plate is slidably installed inside the tubular drill bit, and the upper end of the sliding plate is connected to the output end of the main telescopic member; a through hole is provided in the middle of the sliding plate;

[0012] There are at least three slide rails, the slide rails are evenly distributed at the lower end of the sliding plate, and a slider is slidably connected inside the slide rails;

[0013] There are the same number of hooks as the slide rails, the hooks are bent, the bent part of the hook is rotatably connected to the slider, the angle at the bent part of the hook is less than 90 degrees, the bent part of the hook faces downward, and the end of the hook far from the middle of the sliding plate is the grasping end, and the end located at the middle of the sliding plate is the driving end;

[0014] A driving plate is slidably connected to the sliding plate through a set slide rod, the driving plate is located at the lower end of the sliding plate, and the upper end of the driving plate contacts the end of the hook close to the middle of the sliding plate;

[0015] Supplementary cutting blocks are evenly arranged on the inner side of the lower end of the tubular drill bit.

[0016] As a preferred solution of the present application, an inner tube is slidably connected up and down inside the tubular drill bit, the upper end of the inner tube contacts the end of the hook far from the middle of the sliding plate, and an articulated groove is provided at the lower end of the inner tube, and an articulated plate is articulated inside the articulated groove;

[0017] An arc-shaped groove is provided at the upper end of the supplementary cutting block, and the arc-shaped groove on the supplementary cutting block corresponds to the articulated plate.

[0018] As a preferred solution of the present application, the side wall of the articulated plate is a blade structure.

[0019] As a preferred solution of the present application, an extrusion plate is articulated at the end of the hook far from the middle of the sliding plate. In the initial state, the extrusion plate is vertically downward, a baffle is provided at the upper end of the extrusion plate, and a stop block is provided on the outside of the hook. When the extrusion plate rotates, the baffle contacts the stop block.

[0020] As a preferred embodiment of the present application, the inner side of the extrusion plate is arc-shaped, and triangular grooves are provided on the inner side of the extrusion plate; the lower side of the extrusion plate is in contact with the upper end of the inner tube.

[0021] As a preferred embodiment of the present application, balls are evenly arranged on the inner wall of the inner tube.

[0022] As a preferred embodiment of the present application, a hose is provided at the upper end of the sliding plate, and the hose at the upper end of the sliding plate communicates with the connection end of the tubular drill bit and the driving device; a water delivery channel is provided inside the sliding plate; hoses are evenly provided at the lower end of the sliding plate; water troughs are evenly provided in the inner tube, one end of the hose at the lower end of the sliding plate communicates with the water trough, and the other end communicates with the water delivery channel; water outlets are provided on the inner side of the inner tube, and the water outlets communicate with the water troughs.

[0023] As a preferred embodiment of the present application, the water outlets are located at positions between adjacent balls.

[0024] A method for detecting a road surface in road administration construction, which is applicable to the above-mentioned road administration construction road surface detection system; the method includes the following steps;

[0025] S1: First, the staff connects a water pipe to the water injection port on the driving device and starts the driving device, and the driving device drives the tubular drill bit to rotate; during the rotation of the tubular drill bit, the sliding plate, the active telescopic member, the slide rail hook, etc. inside it are driven to rotate synchronously;

[0026] S2: During the rotation of the drill bit, the staff rotates the screw rod, and during the rotation of the screw rod, the lifting plate is driven to move downward, and the lifting plate drives the tubular drill bit to move downward until the lower end of the tubular drill bit contacts the road surface, and water flows out from the inside of the tubular drill bit to cool and lubricate the drill bit, and then rotates and cuts the road surface;

[0027] S3: The staff continuously rotates the screw rod to make the tubular drill bit continuously descend. During this process, the road core sample after cutting by the tubular drill bit and the supplementary cutting block enters the inside of the tubular drill bit, so that there is a gap between the road core sample and the inner wall of the tubular drill bit. During this process, when the active telescopic member extends downward, it pushes the sliding plate downward;

[0028] S4: When the sliding plate moves downward, it drives the slide rail, the hook and the driving plate to move downward. When the lower end of the driving plate contacts the upper end of the road core sample, then the active telescopic member continuously extends downward. The driving plate is blocked by the road core sample, so that the gap between the sliding plate and the driving plate continuously becomes smaller, and the hook rotates to extrude the outer wall of the road core sample. Then the tubular drill bit rises and lifts the road core sample out of the drill hole on the road surface.

[0029] After step S5 is proposed, the active telescopic member contracts upward, so that the driving plate and the sliding plate no longer limit the grab hook, and the grab hook has a movement space. Then, the road core sample falls downward under the action of its own gravity out of the tubular drill bit, realizing the extraction of the road core sample from the drill hole and detecting the compactness and strength of the road core sample.

[0030] The beneficial effects of the present invention are as follows:

[0031] The inner tube drives the hinge plate to move downward synchronously. Since the hinge plate corresponds to the arc-shaped groove opened on the supplementary cutting block, when the hinge plate moves downward, it will enter the inside of the arc-shaped groove. Under the guidance of the arc-shaped groove, the hinge plate will rotate on the inner tube. As the inner tube moves downward, the hinge plate will extend out from the gap between the road core sample and the arc-shaped groove. Since the lower end of the road is mostly paved with soil layer or sand layer, the hinge plate will penetrate into the soil layer or sand layer below the road surface and is located below the road core sample at the same time. When the tubular drill bit moves upward to take out the road core sample, the hinge plate will support the lower end of the road core sample, making it more convenient to take out the road core sample and improving the detection efficiency of the road core sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the structural view of the core drill in the present invention;

[0033] Figure 2 is the structural view of the lifting plate in the present invention;

[0034] Figure 3 is the structural view of the tubular drill bit and the inner tube in the present invention;

[0035] Figure 4 is the structural view of the inner tube in the present invention;

[0036] Figure 5 is the front view of the inner tube in the present invention;

[0037] Figure 6 is the partial sectional view of the inner tube in the present invention;

[0038] Figure 7 is Figure 6 the partial structural view at A in

[0039] Figure 8 is the internal view of the sliding plate in the present invention;

[0040] Figure 9 is the structural view of the grab hook in the present invention;

[0041] Figure 10 is the method flow chart in the present invention.

[0042] In the figure: frame 1, sliding cylinder 11, lifting plate 12, fixing plate 13, screw rod 14, support member 15, tubular drill bit 2, driving device 21, water injection port 22, active telescopic member 23, sliding plate 24, water delivery channel 241, water tank 242, slide rail 25, grab hook 26, extrusion plate 261, baffle plate 262, stop block 263, triangular groove 264, driving plate 27, supplementary cutting block 28, arc groove 281, inner tube 29, hinged plate 291, ball 292, water outlet 293. Detailed implementation mode

[0043] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0044] Embodiment 1:

[0045] As Figures 1 to 10 shown; a road administration construction road surface detection system, the detection system includes a core drill, the core drill includes a frame 1, a sliding cylinder 11, a lifting plate 12, a fixing plate 13, a screw rod 14 and a support member 15 (the support member 15 is used to support the engine fuel tank and water tank on the core drill); the sliding cylinder 11 is arranged on the frame 1; both ends of the lifting plate 12 are slidably connected to the outside of the sliding cylinder 11; the fixing plate 13 is arranged at the upper end of the sliding cylinder 11; the screw rod 14 is arranged on the fixing plate 13, and the lower end of the screw rod 14 passes through the middle of the lifting plate 12; the support member 15 is arranged on the side of the lifting plate 12; the core drill further includes:

[0046] A tubular drill bit 2, the tubular drill bit 2 is installed below the lifting plate 12, and the upper end of the tubular drill bit 2 is connected to a driving device 21 arranged on the lifting plate 12; the connection between the upper end of the tubular drill bit 2 and the driving device 21 is hollow, and a water injection port 22 is arranged on the driving device 21, and the water injection port 22 is communicated with the inside of the tubular drill bit 2 through the driving device 21;

[0047] An active telescopic member 23, the active telescopic member 23 is installed inside the tubular drill bit 2; the output end of the active telescopic member 23 is vertically downward;

[0048] A sliding plate 24, the sliding plate 24 is slidably installed inside the tubular drill bit 2, and the upper end of the sliding plate 24 is connected to the output end of the active telescopic member 23; a through hole is formed in the middle of the sliding plate 24;

[0049] Slide rails 25, the number of the slide rails 25 is at least three, the slide rails 25 are evenly distributed at the lower end of the sliding plate 24, and sliders are slidably connected inside the slide rails 25;

[0050] The grab hooks 26, the number of the grab hooks 26 is the same as that of the sliding rails 25. The grab hooks 26 are bent, the bent part of the grab hook 26 is rotatably connected to the slider, the angle at the bent part of the grab hook 26 is less than 90 degrees, the bent part of the grab hook 26 faces downward, and the end of the grab hook 26 away from the middle of the sliding plate 24 is the grabbing end, and the end located at the middle of the sliding plate 24 is the driving end;

[0051] The supplementary cutting blocks 28 are evenly arranged on the inner side of the lower end of the tubular drill bit 2;

[0052] An inner tube 29 is slidably connected up and down inside the tubular drill bit 2. The upper end of the inner tube 29 contacts the end of the grab hook 26 away from the middle of the sliding plate 24. An articulated groove is opened at the lower end of the inner tube 29, and an articulated plate 291 is articulated inside the articulated groove;

[0053] An arc-shaped groove 281 is opened at the upper end of the supplementary cutting block 28, and the arc-shaped groove 281 on the supplementary cutting block 28 corresponds to the articulated plate 291.

[0054] The specific working process is as follows:

[0055] When in use, first, the staff connects the water pipe to the water injection port 22 on the driving device 21 (the driving device 21 is a driving motor in the prior art, and the water injection port 22 is arranged on the driving device 21, which is a conventional setting in the field on the driving motor, and will not be elaborated here); then the staff moves the core drill to the road surface where core sampling and detection are required, starts the driving device 21, and the driving device 21 drives the tubular drill bit 2 to rotate; during the rotation of the tubular drill bit 2, the sliding plate 24, the active telescopic member 23, the sliding rail 25, the grab hook 26, etc. inside it rotate synchronously;

[0056] And during the rotation of the drill bit, water is injected into the inside of the tubular drill bit 2 through the water injection port 22, and then the water drops above the sliding plate 24 and flows downward through the through holes above the sliding plate 24; then the staff manually rotates the screw rod 14 on the fixing plate 13. The screw rod 14 is connected to the lifting plate 12. When the screw rod 14 rotates, the lifting plate 12 slides up and down on the screw rod 14. When the lifting plate 12 slides up and down, both ends of the lifting plate 12 slide up and down in the sliding cylinder 11;

[0057] When performing core sampling inspection on the road surface, the staff rotates the screw rod 14. During the rotation of the screw rod 14, the lifting plate 12 is driven to move downward, and the lifting plate 12 drives the tubular drill bit 2 to move downward until the lower end of the tubular drill bit 2 contacts the road surface. Water flows out from the inside of the tubular drill bit 2 to cool and lubricate the drill bit. Subsequently, the road surface is rotationally cut. Since the supplementary cutting block 28 is arranged on the inner side of the lower end of the tubular drill bit 2, the supplementary cutting block 28 and the tubular drill bit 2 cut the road surface synchronously. The staff continuously rotates the screw rod 14 to make the tubular drill bit 2 continuously descend. During this process, the core sample after cutting by the tubular drill bit 2 and the supplementary cutting block 28 enters the inside of the tubular drill bit 2. Affected by the supplementary cutting block 28, the diameter of the core sample is smaller than the inner diameter of the tubular drill bit 2, so that there is a gap between the core sample and the inner wall of the tubular drill bit 2, and the width of the gap is the same as the width of the supplementary cutting block 28; after the cutting of the road surface is completed;

[0058] The staff controls the active telescopic member 23 to extend (the active telescopic member 23 is a telescopic rod in the prior art); when the active telescopic member 23 extends downward, it pushes the sliding plate 24 to move downward. The sliding plate 24 drives the slide rail 25, the grab hook 26, and the drive plate 27 to move downward until the lower end of the drive plate 27 touches the upper end of the road core sample. Subsequently, when the active telescopic member 23 continues to extend downward, the drive plate 27 is blocked by the road core sample and cannot move downward, while the sliding plate 24 continues to move downward, causing the gap between the sliding plate 24 and the drive plate 27 to continuously decrease. The slide bar provided on the drive plate 27 slides upward in the chute opened on the sliding plate 24. During this process, the upper end of the drive plate 27 squeezes the end of the grab hook 26 close to the middle of the sliding plate 24, causing the grab hook 26 to rotate. The angle between the end of the grab hook 26 close to the middle of the sliding plate 24 and the sliding plate 24 gradually decreases, and it moves away from the middle of the sliding plate 24 inside the slide rail 25. At the same time, the end of the grab hook 26 away from the middle of the sliding plate 24 rotates into the gap between the road core sample and the tubular drill bit 2. Since the bending angle in the middle of the grab hook 26 is less than 90 degrees, as the grab hook 26 rotates, the end of the grab hook 26 embedded in the gap between the inner wall of the paper tubular drill bit 2 and the road core gradually squeezes the outer wall of the road core sample until the grab hook 26 completely squeezes the outer wall of the road core sample. At this time, the end of the grab hook 26 close to the middle of the sliding plate 24 tends to be parallel to the horizontal plane, and the active telescopic member 23 can no longer extend; the end of the grab hook 26 away from the middle of the sliding plate 24 has also grabbed the outer wall of the road core sample. Subsequently, the staff rotates the screw rod 14, and the screw rod 14 drives the lifting plate 12 to move upward. The lifting plate 12 drives the tubular drill bit 2, the active telescopic member 23, the sliding plate 24, the drive plate 27, and the grab hook 26 to move upward, and the grab hook 26 grabs the road core sample and lifts it out of the drill hole on the road surface; after being lifted out, the active telescopic member 23 is controlled to contract upward, and the drive plate 27 moves downward on the sliding plate 24. The gap between the sliding plate 24 and the drive plate 27 gradually increases, so that the drive plate 27 and the sliding plate 24 no longer limit the grab hook 26, and the grab hook 26 has a movement space, while the road core sample falls downward out of the tubular drill bit 2 under the action of its own gravity; thus, it is possible to take out the road core sample from the drill hole without opening any holes, grooves, etc. on the tubular drill bit 2, which is convenient for detecting the compactness, strength, etc. of the road core sample, and will not change the stress of the tubular drill bit 2 due to opening holes, grooves, etc., resulting in the problem of the reduced service life of the tubular drill bit 2;

[0059] While the grappling hook 26 grabs the road core sample, the end of the grappling hook 26 far from the middle of the sliding plate 24 will move downward in the gap between the tubular drill bit 2 and the road core sample. During this process, the end of the grappling hook 26 far from the middle of the sliding plate 24 will squeeze the upper part of the inner tube 29. After being squeezed, the inner tube 29 moves downward, and the inner tube 29 drives the hinge plate 291 to move downward synchronously. Since the hinge plate 291 corresponds to the arc-shaped groove 281 opened on the supplementary cutting block 28, when the hinge plate 291 moves downward, it will enter the inside of the arc-shaped groove 281. And under the guidance of the arc-shaped groove 281, the hinge plate 291 will rotate on the inner tube 29. As the inner tube 29 moves downward, the hinge plate 291 will extend out from the gap between the road core sample and the arc-shaped groove 281. Since the lower end of the road is mostly paved with soil layer or sand layer, the hinge plate 291 will pierce into the soil layer or sand layer under the road surface and is located under the road core sample at the same time. When the tubular drill bit 2 moves upward and takes out the road core sample, the hinge plate 291 will support the lower end of the road core sample, which is more convenient for taking out the road core sample and improves the detection efficiency of the road core sample.

[0060] Embodiment Two:

[0061] As Figures 1 to 9 shown; the side wall of the hinge plate 291 is a blade structure.

[0062] The specific working process is as follows:

[0063] On the basis of the above embodiment, by making the side wall of the hinge plate 291 a blade structure, on the one hand, it is convenient for the hinge plate 291 to insert into the soil layer or sand layer at the lower end of the road core sample. On the other hand, after the hinge plate 291 is inserted into the soil layer or sand layer, the tubular drill bit 2 continues to rotate, and the side of the hinge plate 291 can cut off a part of the soil layer or sand layer under the road core sample, reducing the probability that the soil layer and the road core sample adhere together and resulting in the difficulty of taking out the road core sample; thereby improving the detection efficiency after taking out the road core sample.

[0064] Embodiment Three:

[0065] As Figures 2 to 9 shown; one end of the grappling hook 26 far from the middle of the sliding plate 24 is hinged with a pressing plate 261. In the initial state, the pressing plate 261 is vertically downward. A baffle 262 is arranged at the upper end of the pressing plate 261, and a stop block 263 is arranged on the outer side of the grappling hook 26. When the pressing plate 261 rotates, the baffle 262 contacts the stop block 263;

[0066] The inner side of the pressing plate 261 is arc-shaped, and a triangular groove 264 is opened on the inner side of the pressing plate 261; the lower side of the pressing plate 261 contacts the upper end of the inner tube 29;

[0067] The inner wall of the inner tube 29 is evenly provided with ball bearings 292.

[0068] The specific working process is as follows:

[0069] On the basis of the above embodiment, an extrusion plate 261 is hinged to one end of the grab hook 26 away from the middle of the sliding plate 24. And in the initial state, a baffle 262 is arranged at the upper end of the extrusion plate 261. During the downward extension of the active telescopic member 23, the sliding plate 24 moves downward. And when the driving plate 27 has not yet contacted the upper end of the road core sample, the extrusion plate 261 will first enter the gap between the tubular drill bit 2 and the road core sample. As the driving plate 27 contacts the upper end of the road core sample, during the downward movement of the active telescopic member 23, the upper end of the driving plate 27 will gradually squeeze one end of the grab hook 26 close to the middle of the sliding plate 24. Subsequently, the grab hook 26 rotates, and the end of the grab hook 26 away from the middle of the sliding plate 24 will gradually enter the gap between the tubular drill bit 2 and the road core sample. At this time, the extrusion plate 261 will not rotate, so that the angle between the extrusion plate 261 and the grab hook 26 gradually becomes larger, and the extrusion plate 261 continues to move downward, while pushing the inner tube 29 until the baffle 262 arranged at the upper end of the extrusion plate 261 contacts the stopper 263 on the grab hook 26. At this time, the extrusion plate 261 cannot rotate on the grab hook 26, so that the extrusion plate 261 and the grab hook 26 cooperate to clamp the road core sample. At the same time, the inner side of the extrusion plate 261 is arc-shaped, making it more fitting with the outer wall of the road core sample. And a triangular groove 264 is opened on the inner side of the extrusion plate 261, increasing the friction force between it and the outer wall of the road core sample, thereby improving the grasping effect on the road core sample;

[0070] Ball bearings 292 are evenly arranged on the inner wall of the inner tube 29. When the tubular drill bit 2 rotates, the lower end of the tubular drill bit 2 will cut and core the road surface. At the same time, the inner tube 29 inside the tubular drill bit 2 will rub against the outer wall of the road core sample. At this time, the ball bearings 292 on the inner wall of the inner tube 29 will rub against the outer wall of the road core sample, and the ball bearings 292 rotate to reduce the friction force between the inner tube 29 and the road core sample. And when the road core sample falls from the tubular drill bit 2, the ball bearings 292 can reduce the friction force between the road core sample and the inner tube 29, improving its discharging effect.

[0071] Embodiment 4:

[0072] As Figures 3 to 9As shown in the figure; a hose is provided at the upper end of the sliding plate 24, and the hose at the upper end of the sliding plate 24 is communicated with the connecting end of the tubular drill 2 and the driving device 21; a water delivery channel 241 is opened inside the sliding plate 24; hoses are uniformly arranged at the lower end of the sliding plate 24; water troughs 242 are uniformly opened in the inner tube 29, one end of the hose at the lower end of the sliding plate 24 is communicated with the water trough 242, and the other end is communicated with the water delivery channel 241; a water outlet 293 is opened on the inner side of the inner tube 29, and the water outlet 293 is communicated with the water trough 242;

[0073] The water outlet 293 is located at a position between adjacent balls 292.

[0074] The specific working process is as follows:

[0075] A hose is provided at the upper end of the sliding plate 24, so that the upper end of the hose is connected to the upper inner part of the tubular drill 2, and the other end is connected to the water delivery channel 241 opened inside the sliding plate 24. And in the initial state, the hose above the sliding plate 24 is in a slack state; multiple hoses are uniformly opened at the upper end of the inner tube 29, so that the hoses at the upper end of the inner tube 29 are communicated with the water delivery channel 241 at the lower end of the sliding plate 24. And water troughs 242 are opened inside the inner tube 29, and the water troughs 242 are communicated with the water outlets 293 opened on the inner side of the inner tube 29;

[0076] When coring the road surface, after the water flow is injected from the driving device 21, the water flow will enter the hose at the upper end of the sliding plate 24, and then enter the conveying channel through the hose at the upper end of the sliding plate 24. Then, it passes through the water delivery channel 241 and enters the hose between the inner tube 29 and the sliding plate 24. Then, it passes through the hose between the inner tube 29 and the sliding plate 24 and enters the water trough 242, and then sprays out from the water outlet 293. Compared with the existing water spraying method, since the water outlet 293 is located on the inner wall of the inner tube 29, when cutting the road core, the water flow can fully cover the surface of the road core sample, and the water flow can be fully distributed inside the tubular drill 2, improving the cooling and lubrication effects on the tubular drill 2, thereby improving the service life of the tubular drill 2 and the sampling effect on the road core sample, and further improving the detection efficiency.

[0077] Embodiment 5:

[0078] As Figure 10 shown; a road administration construction road surface detection method, which is applicable to the above-mentioned road administration construction road surface detection system; this method includes the following steps;

[0079] S1 First, the staff connects the water pipe to the water injection port 22 on the driving device 21 and starts the driving device 21. During the rotation of the tubular drill 2, the driving device 21 drives the internal sliding plate 24, the active telescopic member 23, the slide rail 25, the hook 26, etc. to rotate synchronously;

[0080] S2: During the rotation of the drill bit, the staff rotates the screw rod 14. During the rotation of the screw rod 14, the lifting plate 12 is driven to move downward, and the lifting plate 12 drives the tubular drill bit 2 to move downward until the lower end of the tubular drill bit 2 contacts the road surface. Water flows out from the inside of the tubular drill bit 2 to cool and lubricate the drill bit, and then rotates and cuts the road surface.

[0081] S3: The staff continuously rotates the screw rod 14, causing the tubular drill bit 2 to continuously descend. During this process, the core sample of the road surface after being cut by the tubular drill bit 2 and the supplementary cutting block 28 enters the inside of the tubular drill bit 2, creating a gap between the core sample and the inner wall of the tubular drill bit 2. During this process, when the active telescopic member 23 extends downward, it pushes the sliding plate 24 to move downward.

[0082] S4: When the sliding plate 24 moves downward, it drives the slide rail 25, the grab hook 26, and the drive plate 27 to move downward. When the lower end of the drive plate 27 contacts the upper end of the core sample, then the active telescopic member 23 continuously extends downward. The drive plate 27 is blocked by the core sample, causing the gap between the sliding plate 24 and the drive plate 27 to continuously decrease. The grab hook 26 rotates to squeeze the outer wall of the core sample, and then the tubular drill bit 2 rises to lift the core sample out of the drill hole on the road surface.

[0083] S5: After being lifted out, the active telescopic member 23 contracts upward, causing the drive plate 27 and the sliding plate 24 to no longer limit the grab hook 26. The grab hook 26 has room for movement, and the core sample then falls downward out of the tubular drill bit 2 under the action of its own gravity; realizing the removal of the core sample from the drill hole and detecting the compaction degree, strength, etc. of the core sample.

Claims

1. A road construction pavement detection system, the detection system comprising a core drilling machine, the core drilling machine comprising a frame (1), a slide (11), a lifting plate (12), a fixed plate (13), a spiral rod (14) and a support member (15); the slide (11) is arranged on the frame (1); the two ends of the lifting plate (12) are slidably connected to the outside of the slide (11); the fixed plate (13) is arranged on the upper end of the slide (11); the spiral rod (14) is arranged on the fixed plate (13), and the lower end of the spiral rod (14) passes through the middle of the lifting plate (12); the support member (15) is arranged on the side of the lifting plate (12); it is characterized in that The core drilling machine also includes: A tubular drill bit (2), the tubular drill bit (2) being mounted below the lifting plate (12), the upper end of the tubular drill bit (2) being connected to a driving device (21) disposed on the lifting plate (12); the connection between the upper end of the tubular drill bit (2) and the driving device (21) being hollow, the driving device (21) being provided with a water injection port (22), the water injection port (22) being connected to the interior of the tubular drill bit (2) through the driving device (21); An active telescopic member (23), the active telescopic member (23) being installed inside the tubular drill bit (2); an output end of the active telescopic member (23) being vertically downward; A sliding plate (24) is slidably mounted inside the tubular drill bit (2), and the upper end of the sliding plate (24) is connected to the output end of the active telescopic member (23); a through hole is provided in the middle of the sliding plate (24); Slide rails (25), the number of the slide rails (25) is at least three, the slide rails (25) are evenly distributed at the lower end of the sliding plate (24), and the interior of the slide rails (25) is slidably connected with a slider; A grab hook (26), the number of the grab hooks (26) is the same as that of the slide rail (25), the grab hook (26) is bent, the bent portion of the grab hook (26) is rotatably connected to the slide block, the angle of the bent portion of the grab hook (26) is less than 90 degrees, the bent portion of the grab hook (26) faces downward, and the end of the grab hook (26) away from the middle of the sliding plate (24) is the grabbing end, and the end located in the middle of the sliding plate (24) is the driving end; A driving plate (27), wherein the driving plate (27) is slidably connected to the sliding plate (24) via a sliding rod, the driving plate (27) is located at the lower end of the sliding plate (24), and the upper end of the driving plate (27) is in contact with an end of the grab hook (26) close to the middle of the sliding plate (24); A supplementary cutting block (28), the supplementary cutting block (28) being evenly arranged on the inner side of the lower end of the tubular drill bit (2); The tubular drill bit (2) is slidably connected to an inner tube (29) in an upward and downward manner, the upper end of the inner tube (29) contacts an end of the grab hook (26) away from the middle of the sliding plate (24), and the lower end of the inner tube (29) is provided with a hinge groove, and a hinge plate (291) is hingedly connected to the interior of the hinge groove; An arc-shaped groove (281) is provided at the upper end of the supplementary cutting block (28), and the arc-shaped groove (281) on the supplementary cutting block (28) corresponds to the hinge plate (291).

2. A road construction pavement detection system as claimed in claim 1, characterized in that: The side wall of the hinge plate (291) is a blade structure.

3. A road construction pavement detection system as claimed in claim 1, characterized in that: An end of the grab hook (26) away from the middle of the sliding plate (24) is hinged with an extrusion plate (261). In an initial state, the extrusion plate (261) is vertically downward, a baffle plate (262) is provided at the upper end of the extrusion plate (261), and a baffle block (263) is provided on the outer side of the grab hook (26). When the extrusion plate (261) rotates, the baffle plate (262) contacts the baffle block (263).

4. A road construction pavement detection system as claimed in claim 3, characterized in that: The inner side of the extrusion plate (261) is arranged in an arc shape, and a triangular groove (264) is provided on the inner side of the extrusion plate (261); the lower side of the extrusion plate (261) contacts the upper end of the inner tube (29).

5. A road construction pavement detection system as claimed in claim 4, characterized in that: The inner wall of the inner tube (29) is evenly provided with balls (292).

6. A road construction pavement detection system as claimed in claim 1, characterized in that: The upper end of the sliding plate (24) is provided with a hose, and the hose at the upper end of the sliding plate (24) is connected to the connection end of the tubular drill bit (2) and the driving device (21); a water delivery channel (241) is provided inside the sliding plate (24); the lower end of the sliding plate (24) is evenly provided with a hose; a water trough (242) is evenly provided in the inner tube (29), one end of the hose at the lower end of the sliding plate (24) is connected to the water trough (242), and the other end is connected to the water delivery channel (241); a water outlet (293) is provided on the inner side of the inner tube (29), and the water outlet (293) is connected to the water trough (242).

7. A road construction pavement detection system as claimed in claim 6, characterized in that: The water outlet (293) is located between adjacent balls (292).

8. A road construction pavement detection method, the method being applicable to a road construction pavement detection system as claimed in any one of claims 1 to 7; characterized in that: The method comprises the following steps: S1: First, a worker connects a water pipe to the water inlet (22) on the driving device (21), starts the driving device (21), and the driving device (21) drives the tubular drill bit (2) to rotate; during the rotation of the tubular drill bit (2), the sliding plate (24), the active telescopic member (23), the slide rail (25), and the grab hook (26) inside the tubular drill bit (2) are driven to rotate synchronously; S2: During the rotation of the drill bit, the worker rotates the spiral rod (14), and the spiral rod (14) drives the lifting plate (12) to move downward during the rotation, and the lifting plate (12) drives the tubular drill bit (2) to move downward until the lower end of the tubular drill bit (2) contacts the road surface, and water flows out from the inside of the tubular drill bit (2) to cool and lubricate the drill bit, and then the road surface is rotated and cut; S3: The worker continuously rotates the spiral rod (14) so ​​that the tubular drill bit (2) continuously descends. During this process, the road core sample cut by the tubular drill bit (2) and the supplementary cutting block (28) enters the interior of the tubular drill bit (2), so that there is a gap between the road core sample and the inner wall of the tubular drill bit (2). During this process, the active telescopic member (23) pushes the sliding plate (24) to move downward when extending downward. S4: When the sliding plate (24) moves downward, it drives the sliding rail (25), the grab hook (26) and the driving plate (27) to move downward until the lower end of the driving plate (27) contacts the upper end of the road core sample, and then the active telescopic member (23) continues to extend downward, and the driving plate (27) is blocked by the road core sample, so that the gap between the sliding plate (24) and the driving plate (27) continues to decrease, and the grab hook (26) rotates to squeeze the outer wall of the road core sample, and then the tubular drill bit (2) rises to lift the road core sample out of the drill hole on the road surface; S5: After being raised, the active telescopic member (23) contracts upward, so that the driving plate (27) and the sliding plate (24) no longer limit the grab hook (26), and the grab hook (26) has space for movement. The road core sample falls downward out of the tubular drill bit (2) due to its own gravity, so that the road core sample can be taken out of the drill hole and the compaction and strength of the road core sample can be tested.

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