Road administration construction pavement detection system and method

Abstract

The invention relates to the technical field of road surface detection, in particular to a road administration construction road surface detection system and method. The inner pipe drives the hinged plate to synchronously move downwards, due to the fact that the hinged plate corresponds to an arc-shaped groove formed in the supplementary cutting block, the hinged plate can enter the arc-shaped groove when moving downwards, the hinged plate can rotate on the inner pipe under the guidance of the arc-shaped groove, and along with downward movement of the inner pipe, the hinged plate can pass through the arc-shaped groove; when the road core sample is taken out, the road core sample extends out of the gap between the road core sample and the arc-shaped groove, due to the fact that a soil layer or a sand layer is additionally laid at the lower end of the road, the hinged plate can penetrate into the soil layer or the sand layer below the road surface, is located below the road core sample and moves upwards along with the tubular drill bit. The hinged plate can support the lower end of the road core sample, so that the road core sample can be taken out more conveniently, and the detection efficiency of the road core sample is improved.

Description

Technical Field

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

[0002] In order to ensure the construction quality of the pavement after construction, it is usually necessary to test various aspects of the pavement performance. Testing can ensure that the pavement construction meets the requirements of the design and specifications, and avoid subsequent problems caused by poor construction quality, such as pavement cracking, settlement, etc. Proper inspection and maintenance can extend the service life of the pavement and reduce the cost of repair or reconstruction due to early damage; At present, road surface inspection includes various tests, such as the friction coefficient, compression coefficient and road surface compaction of the road surface; The above-mentioned tests on pavement compaction are mostly carried out using a core drill, which is a pavement drilling and coring machine that enables core samples to be drilled from the pavement structure. These core samples can then be used for laboratory analysis to evaluate the thickness, strength, compaction and other physical and chemical properties of the pavement.

[0003] In the process of using a core drill to inspect the road surface, it is often difficult to remove the road core sample drilled on the road surface after the drill bit of the core drill is lifted. To solve this problem, improvements are usually made to the drill bit of the core drill. In order to facilitate the removal of the road core sample, holes, grooves, etc. are usually opened on the drill bit of the core drill, and structures are added in the holes and grooves to facilitate the removal of the road core sample. However, when the drill bit of the core drill drills the road surface, it rotates downward, and the road surface is mostly cement or asphalt, which is relatively hard. When holes and grooves are opened on the drill bit of the core drill, the drill bit is designed to withstand axial pressure and torque based on the strength of its overall structure. Opening holes, grooves, etc. on the drill bit will destroy this strength, making the drill bit more susceptible to deformation, bending, and fracture, thereby reducing the service life of the drill bit of the core drill.

[0004] In summary, in order to solve the technical problems raised in this article, the present invention proposes a road construction pavement detection system and method. Summary of the invention

[0005] The present invention proposes a road construction road surface detection system, which includes a core drilling machine, which includes a frame, a slide, a lifting plate, a fixed plate, a spiral rod and a support member; the slide is arranged on the frame; the two ends of the lifting plate are slidably connected to the outside of the slide; the fixed plate is arranged at the upper end of the slide; the spiral rod is arranged on the fixed plate, and the lower end of the spiral rod passes through the middle of the lifting plate; the support member is arranged on the side of the lifting plate; the core drilling machine also includes: 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 arranged 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 arranged on the driving device, and the water injection port is connected to the inside of the tubular drill bit through the driving device; An active telescopic member, which is installed inside the tubular drill bit; the output end of the active telescopic member is vertically downward; A sliding plate is slidably mounted inside the tubular drill bit, and the upper end of the sliding plate is connected to the output end of the active telescopic member; a through hole is opened in the middle of the sliding plate; Slide rails, the number of which is at least three, which are evenly distributed at the lower end of the sliding plate, and the inner part of the slide rails is slidably connected with a slider; Grab hooks, the number of which is the same as that of the slide rails, the grab hooks are bent, the bent portion of the grab hooks is rotatably connected to the slide block, the angle of the bent portion of the grab hooks is less than 90 degrees, the bent portion of the grab hooks faces downward, and the end of the grab hooks away from the middle of the sliding plate is the grabbing end, and the end located in the middle of the sliding plate is the driving end; A driving plate, wherein the driving plate is slidably connected to the sliding plate through a sliding rod, the driving plate is located at the lower end of the sliding plate, and the upper end of the driving plate is in contact with an end of the grab hook close to the middle of the sliding plate; The supplementary cutting blocks are evenly arranged on the inner side of the lower end of the tubular drill bit.

[0006] As a preferred solution of the present application, an inner tube is slidably connected to the tubular drill bit up and down, the upper end of the inner tube is in contact with an end of the grab hook away from the middle of the sliding plate, and a hinge groove is provided at the lower end of the inner tube, and a hinge plate is hinged inside the hinge groove; An arc groove is formed at the upper end of the supplementary cutting block, and the arc groove on the supplementary cutting block corresponds to the hinge plate.

[0007] As a preferred solution of the present application, the side wall of the hinge plate is a blade structure.

[0008] As a preferred solution of the present application, the end of the grab hook away from the middle of the sliding plate is hinged with an extrusion 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 block is provided on the outer side of the grab hook. When the extrusion plate rotates, the baffle contacts the block.

[0009] As a preferred solution of the present application, the inner side of the extrusion plate is arc-shaped, and a triangular groove is provided on the inner side of the extrusion plate; the lower side of the extrusion plate contacts the upper end of the inner tube.

[0010] As a preferred solution of the present application, balls are evenly arranged on the inner wall of the inner tube.

[0011] As a preferred solution of the present application, a hose is provided at the upper end of the sliding plate, and the hose on the upper end of the sliding plate is connected to the connecting end of the tubular drill bit and the driving device; a water supply 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 is connected to the water trough, and the other end is connected to the water supply channel; a water outlet is provided on the inner side of the inner tube, and the water outlet is connected to the water trough.

[0012] As a preferred solution of the present application, the water outlet is located between adjacent balls.

[0013] A road construction pavement detection method, the method is applicable to the above-mentioned road construction pavement detection system; the method comprises the following steps: S1: First, the staff connects the water pipe to the water inlet on the driving device and starts the driving device, which drives the tubular drill bit to rotate. During the rotation of the tubular drill bit, the sliding plate, active telescopic parts, slide rail hooks, etc. inside the tubular drill bit are driven to rotate synchronously; S2: During the rotation of the drill bit, the worker rotates the spiral rod, which drives the lifting plate to move downward. The lifting plate drives the tubular drill bit to move downward until the lower end of the tubular drill bit contacts the road surface. Water flows out from the inside of the tubular drill bit to cool and lubricate the drill bit, and then the road surface is rotated and cut; S3: The staff continuously rotates the spiral rod to make the tubular drill bit continuously descend. During this process, the road core sample cut by the tubular drill bit and the supplementary cutting block enters the interior 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, the active telescopic member pushes the sliding plate to move downward when extending downward; S4: When the sliding plate moves downward, it drives the slide rail, the grab hook and the driving plate to move downward until the lower end of the driving plate contacts the upper end of the road core sample. Then the active telescopic part continues to extend downward, and the driving plate is blocked by the road core sample, so that the gap between the sliding plate and the driving plate continues to decrease. The grab hook rotates to squeeze the outer wall of the road core sample, and then the tubular drill bit rises to lift the road core sample out of the drill hole on the road surface.

[0014] S5: After being raised, the active telescopic part contracts upward, so that the driving plate and the sliding plate no longer limit the grab hook, and the grab hook has space to move. The road core sample falls downward out of the tubular drill bit due to its own gravity; the road core sample is taken out of the drill hole, and the compaction and strength of the road core sample are tested.

[0015] The beneficial effects of the present invention are as follows: The inner tube drives the hinged plate to move downward synchronously. Since the hinged plate corresponds to the arc groove provided on the supplementary cutting block, the hinged plate will enter the interior of the arc groove when moving downward, and guided by the arc groove, the hinged plate will rotate on the inner tube. As the inner tube moves downward, the hinged plate will pass through the arc groove and extend from the gap between the road core sample and the arc groove. Since the lower end of the road is mostly paved with soil or sand layers, the hinged plate will penetrate into the soil or sand layer under the road surface and be located below the road core sample at the same time. As the tubular drill bit moves upward, when the road core sample is taken out, the hinged plate will support the lower end of the road core sample, which makes it easier to take out the road core sample and improves the detection efficiency of the road core sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural view of the core drilling machine in the present invention; Figure 2 It is a structural view of the lifting plate in the present invention; Figure 3 It is a structural view of the tubular drill bit and the inner tube in the present invention; Figure 4 It is a structural view of the inner tube in the present invention; Figure 5 It is a structural front view of the inner tube in the present invention; Figure 6 is a partial cross-sectional view of the inner tube in the present invention; Figure 7 yes Figure 6 The local structure view at A in the middle; Figure 8 is an internal view of the sliding plate of the present invention; Fig. 9 It is a structural view of the grab hook in the present invention; Fig.10 It is a flow chart of the method in the present invention.

[0017] In the figure; frame 1, slide 11, lifting plate 12, fixed plate 13, screw rod 14, support member 15, tubular drill bit 2, drive 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 262, block 263, triangular groove 264, drive plate 27, supplementary cutting block 28, arc groove 281, inner tube 29, hinged plate 291, ball 292, water outlet 293. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] Embodiment 1:

[0020] like Figures 1 to 10 As shown; a road construction pavement detection system, the detection system includes a core drilling machine, the core drilling machine includes a frame 1, a slide 11, a lifting plate 12, a fixed plate 13, a screw rod 14 and a support member 15 (the support member 15 is used to support the engine oil tank and water tank on the core drilling machine); 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 at the upper end of the slide 11; the screw rod 14 is arranged on the fixed 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 drilling machine also includes: A 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 provided 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 provided on the driving device 21, and the water injection port 22 is connected to the inside of the tubular drill bit 2 through the driving device 21; An active telescopic member 23, which is installed inside the tubular drill bit 2; an output end of the active telescopic member 23 is 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 opened in the middle of the sliding plate 24; Slide rails 25, the number of which is at least three, which 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; The grab hook 26 has the same number as the slide rail 25. The grab hook 26 is bent, and 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 supplementary cutting block 28, the supplementary cutting block 28 is evenly arranged on the inner side of the lower end of the tubular drill bit 2; The inner tube 29 is slidably connected to the tubular drill bit 2, and the upper end of the inner tube 29 contacts the end of the catch hook 26 away from the middle of the sliding plate 24. The lower end of the inner tube 29 is provided with a hinge groove, and a hinge plate 291 is hinged inside the hinge groove. An arc-shaped groove 281 is formed 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 .

[0021] The specific workflow is as follows: When in use, the staff first 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 as a conventional arrangement on the driving motor in the art, which will not be described in detail here); then the staff moves the core drilling machine to the road surface that needs to be cored and tested, and starts the driving device 21, which 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, the grab hook 26, etc. inside it are driven to rotate synchronously; And during the rotation of the drill bit, water is injected into the tubular drill bit 2 through the water injection port 22, and then the water falls to the top of the sliding plate 24 and flows downward through the through hole above the sliding plate 24; then the staff manually rotates the spiral rod 14 on the fixed plate 13, and the spiral rod 14 is connected to the lifting plate 12, so that when the spiral rod 14 rotates, the lifting plate 12 slides up and down on the spiral rod 14, and when the lifting plate 12 slides up and down, the two ends of the lifting plate 12 slide up and down on the slide cylinder 11; When coring the road surface, the staff rotates the spiral rod 14. The spiral rod 14 drives the lifting plate 12 to move downward during rotation. 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. Then, the road surface is cut by rotation. Since a supplementary cutting block 28 is provided 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 continues to rotate the spiral rod 14 to make the tubular drill bit 2 continue to descend. During the process, the road core sample cut by the tubular drill bit 2 and the supplementary cutting block 28 enters the inside of the tubular drill bit 2. The cut road core sample is affected by the supplementary cutting block 28. The diameter of the road core sample is smaller than the inner diameter 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. The width of the gap is the same as the width of the supplementary cutting block 28. When the road surface cutting is completed; 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, and the sliding plate 24 drives the slide 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 and cannot move downward, while the sliding plate 24 continues to move downward, so that the gap between the sliding plate 24 and the driving plate 27 continues to decrease, and the sliding rod set on the driving plate 27 is opened on the sliding plate 24. The upper end of the driving 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 the grab hook 26 moves inside the slide rail 25 toward the end away from the middle of the sliding plate 24. At the same time, the end of the grab hook 26 away from the middle of the sliding plate 24 rotates to enter the gap between the road core sample and the tubular drill bit 2. Since the bending angle of the middle part of the grab hook 26 is less than 90 degrees, as the grab hook 26 rotates, the grab hook 26 is embedded in one end of the gap between the inner wall of the paper tube drill bit 2 and the road core, gradually clamping the road core sample. The outer wall of the road core sample is squeezed 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 be extended; 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, and then the staff rotates the spiral rod 14, the spiral rod 14 drives the lifting plate 12 to move upward, and the lifting plate 12 drives the tubular drill bit 2, the active telescopic member 23, the sliding plate 24, the driving 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 lifting it out, the control main The movable telescopic member 23 contracts upward, and the driving plate 27 moves downward on the sliding plate 24. The gap between the sliding plate 24 and the driving plate 27 gradually increases, so that the driving plate 27 and the sliding plate 24 no longer limit the grab hook 26. The grab hook 26 has movement space, and the road core sample falls downward out of the tubular drill bit 2 under the action of its own gravity; thereby, 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 testing the compaction degree and strength of the road core sample, and the service life of the tubular drill bit 2 will not be reduced due to the stress of the tubular drill bit 2 being changed due to the opening of holes, grooves, etc.; While the grab hook 26 grabs the road core sample, the end of the grab hook 26 away 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 the process, the end of the grab hook 26 away 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 groove 281 provided on the supplementary cutting block 28, the hinge plate 291 will enter the interior of the arc groove 281 when moving downward, and the guiding arc groove 281 The hinged plate 291 will rotate on the inner tube 29. As the inner tube 29 moves downward, the hinged plate 291 will pass through the arc groove 281 and extend from the gap between the road core sample and the arc groove 281. Since the lower end of the road is mostly paved with soil or sand layers, the hinged plate 291 will penetrate into the soil or sand layer below the road surface and be located below the road core sample at the same time. As the tubular drill bit 2 moves upward and the road core sample is taken out, the hinged plate 291 will support the lower end of the road core sample, which makes it easier to take out the road core sample and improves the detection efficiency of the road core sample.

[0022] Embodiment 2:

[0023] like Figures 1 to 9 As shown; the side wall of the hinge plate 291 is a blade structure.

[0024] The specific workflow is as follows: On the basis of the above embodiment, by making the side wall of the hinged plate 291 a blade structure, on the one hand, it is convenient to insert the hinged plate 291 into the soil layer or sand layer at the lower end of the road core sample; on the other hand, after the hinged plate 291 is inserted into the soil layer or sand layer, the tubular drill bit 2 continues to rotate, and the side of the hinged plate 291 can cut off part of the soil layer or sand layer below the road core sample, thereby reducing the probability of the soil layer and the road core sample sticking together, resulting in the difficulty in removing the road core sample; thereby improving the detection efficiency after the road core sample is taken out.

[0025] Embodiment three:

[0026] like Figures 2 to 9 As shown; the end of the grab hook 26 away from the middle of the sliding plate 24 is hinged with an extrusion plate 261. In the initial state, the extrusion plate 261 is vertically downward, and a baffle 262 is provided at the upper end of the extrusion plate 261. A stopper 263 is provided on the outer side of the grab hook 26. When the extrusion plate 261 rotates, the baffle 262 contacts the stopper 263; The inner side of the extrusion plate 261 is arc-shaped, and a triangular groove 264 is formed 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; The inner wall of the inner tube 29 is evenly provided with balls 292 .

[0027] The specific workflow is as follows: On the basis of the above embodiment, an extrusion plate 261 is hinged at 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 set 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 before the driving plate 27 contacts 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 and as the active telescopic member 23 moves downward, the upper end of the driving plate 27 will gradually squeeze the end of the grab hook 26 close to the middle of the sliding plate 24, and then 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 tubular drill bit 2. The gap between the drill bit 2 and the road core sample is reduced, and the extrusion plate 261 does not rotate at this time, so that the angle between the extrusion plate 261 and the grab hook 26 gradually increases, and the extrusion plate 261 continues to move downward, while pushing the inner tube 29 until the baffle 262 set at the upper end of the extrusion plate 261 contacts the block 263 on the grab hook 26, so that 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, and at the same time, the inner side of the extrusion plate 261 is arc-shaped, so that it fits more closely with the outer wall of the road core sample, and the triangular groove 264 is provided on the inner side of the extrusion plate 261, so that the friction between it and the outer wall of the road core sample is increased, thereby improving the grabbing effect of the road core sample; 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 coring 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. The ball bearings 292 rotate to reduce the friction between the inner tube 29 and the road core sample. When the road core sample falls from the tubular drill bit 2, the ball bearings 292 can reduce the friction between the road core sample and the inner tube 29, thereby improving the discharge effect.

[0028] Embodiment 4:

[0029] like Figures 3 to 9 As shown; 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 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; a hose is evenly provided at the lower end of the sliding plate 24; 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; The water outlet 293 is located between adjacent balls 292 .

[0030] The specific workflow is as follows: 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 inner upper end of the tubular drill bit 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 relaxed state; and a plurality of hoses are evenly provided at the upper end of the inner tube 29, so that the hose at the upper end of the inner tube 29 is connected to the water delivery channel 241 at the lower end of the sliding plate 24, and a water tank 242 is provided inside the inner tube 29, and the water tank 242 is connected to the water outlet 293 opened inside the inner tube 29; When coring the road surface, after water is injected from the driving device 21, the water 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, and then enter the hose between the inner tube 29 and the sliding plate 24 through the water conveying channel 241, and then enter the water tank 242 through the hose between the inner tube 29 and the sliding plate 24, and then spray 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 in the interior of the tubular drill bit 2, thereby improving the cooling and lubrication effect of the tubular drill bit 2, thereby improving the service life of the tubular drill bit 2, and the sampling effect of the road core sample, thereby improving the detection efficiency.

[0031] Embodiment five:

[0032] like Fig.10 As shown; a road construction pavement detection method, the method is applicable to the above-mentioned road construction pavement detection system; the method comprises the following steps; S1 First, the staff connects the water pipe to the water inlet 22 on the driving device 21 and starts the driving device 21, which 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, the grab hook 26, etc. inside it are driven to rotate synchronously; S2: During the rotation of the drill bit, the worker rotates the spiral rod 14, which drives the lifting plate 12 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, 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 to make the tubular drill bit 2 continuously descend. 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 extends downward to push the sliding plate 24 to move 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. 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. 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.

[0033] 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. The grab hook 26 has space to move, and the road core sample falls downward out of the tubular drill bit 2 due to its own gravity. The road core sample is taken out of the drill hole, and the compaction degree, strength, etc. of the road core sample are tested.

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); The supplementary cutting block (28) is evenly arranged on the inner side of the lower end of the tubular drill bit (2).

2. A road construction pavement detection system as claimed in claim 1, characterized in that: 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).

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

4. A road construction pavement detection system as claimed in claim 2, 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).

5. A road construction pavement detection system as claimed in claim 4, 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).

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

7. 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).

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

9. 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 8; 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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