Asphalt pavement detection device

Abstract

The present invention relates to the technical field of drilling sampling detection, and proposes an asphalt pavement detection device, including: a fixed plate having a limiting slide groove; an annular connecting plate slidably arranged in the limiting slide groove; at least one telescopic push rod is arranged, one end of the telescopic push rod is arranged on the annular connecting plate, and the other end of the telescopic push rod is an abutting end, and the abutting end has a limiting surface and an inclined surface; one end of a rotating rod passes through and is rotatably arranged on the fixed plate; a toothed disc is rotatably arranged on the other end of the rotating rod, the toothed disc has a tooth groove, and the abutting end abuts in the tooth groove, and after the rotating rod rotates, the limiting surface or the inclined surface contacts the tooth groove. Through the above technical scheme, the problem of the asphalt pavement core sampling detection device in the prior art sometimes getting asphalt stuck in the core barrel or sample and the excised powder stuck in the core barrel during drilling sampling is solved, which is easy to cause damage to the sampling detection device.

Description

Technical Field

[0001] The invention relates to the technical field of drilling sampling detection, and in particular to an asphalt pavement detection device. Background Art

[0002] With the rapid development of transportation infrastructure construction, asphalt pavement has been widely used in transportation fields such as highways and urban roads. The thickness of asphalt pavement is one of the key indicators to measure its quality and service life. It is extremely important to ensure the bearing capacity, flatness and durability of the road. Therefore, accurate detection of asphalt pavement thickness has become an indispensable part of road construction and maintenance.

[0003] The core sampling detection method has gradually become the mainstream means of asphalt pavement thickness detection. The traditional asphalt pavement thickness core sampling detection device came into being, which is mainly composed of a power source, a core drill bit and a simple supporting structure.

[0004] However, when the existing asphalt pavement core sampling and testing device is drilling and sampling, sometimes asphalt gets stuck in the core barrel or the sample, and the excised powder gets stuck in the core barrel, which can easily cause damage to the sampling and testing device. Summary of the invention

[0005] The present invention proposes an asphalt pavement detection device, which solves the problem that when drilling and sampling for asphalt pavement core sampling detection devices in related technologies, asphalt sometimes gets stuck in the core barrel or sample, and the excised powder gets stuck in the core barrel, which easily causes damage to the sampling detection device.

[0006] The technical solution of the present invention is as follows:

[0007] An asphalt pavement detection device, comprising:

[0008] A fixed plate having a limiting slide groove;

[0009] An annular connecting plate, slidably disposed in the limiting sliding groove;

[0010] At least one telescopic push rod is provided, one end of the telescopic push rod is provided on the annular connecting plate, the other end of the telescopic push rod is an abutting end, and the abutting end has a limiting surface and an inclined surface;

[0011] A rotating rod, one end of which penetrates through and is rotatably disposed on the fixing plate;

[0012] The toothed disc is rotatably arranged on the other end of the rotating rod, the toothed disc has a tooth groove, the abutting end abuts in the tooth groove, and after the rotating rod rotates, the limiting surface or the inclined surface contacts the tooth groove.

[0013] Optionally, also include:

[0014] Base;

[0015] A column, arranged on the base, the column having a slide groove;

[0016] A slider is slidably disposed on the column, the slider has a rotating end, and the rotating end is disposed in the slide groove;

[0017] The first driving member is arranged on a side of the sliding block away from the column, the fixing plate is arranged on the lower end surface of the first driving member, and the rotating rod is drivingly connected to the first driving member.

[0018] Optionally, also include:

[0019] A mounting plate, disposed on the fixing plate;

[0020] A rotating shaft, penetrating through and rotatably disposed on the side wall of the mounting plate;

[0021] A cam, disposed on the rotating shaft;

[0022] A first bevel gear, disposed on the rotating rod;

[0023] The second bevel gear is arranged on the rotating shaft. The first bevel gear and the second bevel gear are meshed with each other. After the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the cam to rotate.

[0024] Optionally, the first driving member includes:

[0025] A box body is arranged on the sliding block, and one side of the box body has a through slot, the through slot is a strip-shaped slot, and the through slot is connected to the limiting sliding slot;

[0026] A first transmission gear is disposed on the rotating rod, and the first transmission gear is located in the box body;

[0027] A second transmission gear is disposed in the through slot, and the first transmission gear and the second transmission gear are meshed with each other;

[0028] A tooth-shaped portion is arranged on the top surface of the annular connecting plate, the tooth-shaped portion is located in the limiting sliding groove, and the tooth-shaped portion is meshed with the second transmission gear.

[0029] Optionally, also include:

[0030] A supporting plate is slidably sleeved on the rotating rod along the axial direction of the rotating rod, the bottom surface of the supporting plate abuts against the toothed disc, the supporting plate has a through hole, the telescopic push rod passes through the through hole, and the cam slidably abuts against the upper surface of the supporting plate;

[0031] A spring is sleeved on the rotating rod, one end of the spring abuts against the bottom surface of the supporting plate, and the other end of the spring abuts against the inner top surface of the toothed disc, and the spring is used to provide a force for the supporting plate to press against the cam.

[0032] Optionally, also include:

[0033] A fixed tube, arranged on the bottom surface of the toothed disc;

[0034] A water inlet pipe, arranged at one side of the fixed pipe and connected to the fixed pipe;

[0035] A core drilling barrel is arranged at the bottom of the fixed pipe, and the water inlet pipe is used to pass water into the core drilling barrel;

[0036] The drill bit is in a circular ring shape and is detachably arranged at the bottom of the core drilling barrel. The end of the drill bit away from the core drilling barrel is provided with a chip removal groove and a water drainage groove.

[0037] Optionally, the tooth groove is rectangular, the longitudinal section of the abutting end is a right triangle, and the limiting surface is parallel to the axis of the telescopic push rod.

[0038] Optionally, also include:

[0039] A splitter plate, disposed in the core drilling barrel;

[0040] An inner lining tube plate is sleeved in the core drilling tube, the outer wall of the inner lining tube plate has a first spiral groove, the inner wall of the core drilling tube has a second spiral groove, the first spiral groove and the second spiral groove are combined to form a spiral flow channel, one end of the spiral flow channel is connected to the interior of the inner lining tube plate, and the other end of the spiral flow channel is connected to the outer wall of the core drilling tube.

[0041] Optionally, the column has a connecting groove, and the connecting groove is located on a side of the column away from the slider, and further includes:

[0042] A connecting block, slidably disposed on the connecting groove;

[0043] The bracket has one end detachably arranged on the connecting block and the other end hinged to one side of the base.

[0044] Optionally, also include:

[0045] The second driver is arranged on the top of the column, the second driver is drivingly connected with the slider, and the second driver is used to drive the slider to reciprocate along the column.

[0046] The working principle and beneficial effects of the present invention are:

[0047] The matching mode of the abutment end and the tooth groove in the present invention is similar to the ratchet pawl. Since the abutment end of the telescopic push rod is located in the tooth groove, when the drill bit is stuck during drilling, the power between the rotating rod and the toothed disc can be disconnected by adjusting the direction of the limiting surface or inclined surface of the abutment end of the telescopic push rod. When the rotating rod rotates counterclockwise, since the limiting surface of the abutment end contacts the side wall of the tooth groove at this time, the telescopic push rod will drive the toothed disc to rotate, and it is in the working state at this time. When the toothed disc is stuck and cannot rotate, the inclined surface is adjusted to contact the side wall of the tooth groove. Due to the guiding effect of the inclined surface, the telescopic push rod will be compressed. At this time, the rotating rod continues to rotate, the toothed disc is stuck and does not move, and the telescopic push rod rotates with the rotating rod and reciprocates up and down on the toothed disc. At the same time, when the telescopic push rod moves up and down, it will generate continuous small vibration, and the vibration direction is different from the vibration of the device itself when it is working. When the drill bit is stuck, the telescopic push rod that moves up and down and rotates around the rotating rod can generate small vibrations to assist the drill bit to resume rotation again. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0049] Figure 1 This is a schematic diagram of the internal structure of the first driving member of the present invention;

[0050] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0051] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0052] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0053] Figure 5 It is a schematic diagram of the abutment end structure of the present invention;

[0054] Figure 6 It is a schematic diagram of the drill bit structure of the present invention;

[0055] Figure 7 This is a schematic diagram of the internal structure of the core drilling barrel of the present invention;

[0056] Figure 8 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0057] Fig. 9 It is a schematic diagram of the structure of the paddle, large gear ring and small gear of the present invention.

[0058] In the figure: 1, fixed plate; 101, limit slide groove; 2, annular connecting plate; 3, telescopic top rod; 31, abutment end; 311, limit surface; 312, inclined surface; 4, rotating rod; 5, toothed disc; 501, tooth groove; 6, base; 7, column; 701, slide groove; 702, connecting groove; 8, slider; 801, rotating end; 9, first driving member; 901, box body; 9011, through groove; 902, first transmission gear; 903, second transmission gear; 904, toothed portion; 10, mounting plate; 11, rotating shaft; 12, convex Wheel; 13, supporting plate; 1301, through hole; 14, first bevel gear; 15, second bevel gear; 16, spring; 17, fixed pipe; 18, water inlet pipe; 19, core drill tube; 1901, second spiral groove; 20, drill bit; 2002, chip groove; 2001, drainage groove; 21, lining cylinder plate; 2101, first spiral groove; 210, spiral flow channel; 22, diverter plate; 23, second driver; 24, water outlet; 25, paddle; 26, large ring gear; 27, small gear; 28, connecting block; 29, bracket. DETAILED DESCRIPTION

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0060] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0061] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0063] Reference Figure 1 to Figure 9 , which is an embodiment of the present invention, proposes an asphalt pavement detection device, including: a fixed plate 1 having a limiting slide groove 101; an annular connecting plate 2 is slidably arranged in the limiting slide groove 101; a telescopic top rod 3 is provided with at least one, one end of the telescopic top rod 3 is arranged on the annular connecting plate 2, and the other end of the telescopic top rod 3 is abutting end 31, and the abutting end 31 has a limiting surface 311 and an inclined surface 312; one end of a rotating rod 4 passes through and is rotatably arranged on the fixed plate 1; a toothed disc 5 is rotatably arranged on the other end of the rotating rod 4, the toothed disc 5 has a tooth groove 501, and the abutting end 31 abuts in the tooth groove 501. After the rotating rod 4 rotates, the limiting surface 311 or the inclined surface 312 contacts the tooth groove 501.

[0064] In the above scheme, when the rotating rod 43 rotates, the rotating rod 4 will drive the annular connecting plate 2 to rotate, and the annular connecting plate 2 will drive the telescopic push rod 3 to rotate around the rotating rod 4 with the axis of the rotating rod 4 as the center. It should be noted that the cooperation mode between the abutting end 31 and the tooth groove 501 is similar to the ratchet pawl. Since the abutting end 31 of the telescopic push rod 3 is located in the tooth groove 501, when it is stuck by the drill bit 20 during drilling, the power between the rotating rod 4 and the toothed disc 5 can be disconnected by adjusting the direction of the limiting surface 311 or the inclined surface 312 of the abutting end 31 of the telescopic push rod 3. It should be clear that the rotating rod 4 is connected to the toothed disc 5 through a bearing, the toothed disc 5 is arranged on the outer ring of the bearing, and the end of the rotating rod 4 is welded to the inner ring of the bearing. For example, when the rotating rod 4 rotates counterclockwise, since the limiting surface 311 of the abutting end 31 is in contact with the side wall of the tooth groove 501 at this time, the telescopic push rod 3 will drive the toothed disc 5 to rotate, and it is in a working state at this time. When the toothed disc 5 is stuck and cannot rotate, the inclined surface 312 contacts the side wall of the tooth groove 501. Due to the guiding effect of the inclined surface 312, the telescopic push rod 3 will be compressed. At this time, the rotating rod 4 continues to rotate, the toothed disc 5 does not rotate, and the telescopic push rod 3 rotates with the rotating rod 4 and reciprocates up and down on the toothed disc 5. At the same time, when the telescopic push rod 3 moves up and down, it will produce continuous small vibrations. The vibration direction is different from the vibration of the device itself when it is working. When the drill bit 20 is stuck, the telescopic push rod 3 that moves up and down and rotates around the rotating rod can produce small vibrations to assist the drill bit 20 to resume rotation again. The telescopic push rod 3 is a spring rod structure. Although the matching mode of the abutting end 31 and the tooth groove 501 is similar to that of a ratchet pawl, the vibration effect generated by the spring rod during telescopic movement is greater than the vibration effect generated by the pawl, so a relatively small vibration can be achieved.

[0065] Furthermore, it also includes a base 6, a column 7 is arranged on the base 6, and the column 7 has a slide groove 701; a slider 8 is slidably arranged on the column 7, and the slider 8 has a rotating end 801, and the rotating end 801 is arranged in the slide groove 701; a first driving member 9 is arranged on the side of the slider 8 away from the column 7, the fixing plate 1 is arranged on the lower end surface of the first driving member 9, and the rotating rod 4 is transmission-connected to the first driving member 9.

[0066] In the above scheme, the column 7 is vertically mounted on the base 6, and the column 7 is provided with a slide groove 701, and the slide groove 701 is used for sliding guide of the slider 8. The slider 8 has a rotating end 801 that cooperates with the slide groove 701, and the rotating end 801 is specifically a rotating wheel or a pulley. The rotating end 801 can be rotated on the column 7 to realize the up and down movement of the slider 8 along the column 7. The first driving member 9 is a sprocket chain structure driven by a reduction motor or a motor, and the first driving member 9 is used to drive the rotating rod 4 to rotate. When core sampling is performed at different positions of the asphalt pavement, the horizontal position can be adjusted by moving the base 6 first, and then the vertical height can be adjusted by the first driving member 9, so as to locate the target detection point conveniently and quickly. As the drilling proceeds, the slider 8 moves steadily downward. It can easily cope with the core drilling needs of asphalt pavements at different positions and angles, reduce the difficulty and workload of manual adjustment, improve the detection efficiency, and ensure that the core drilling operation can be stably performed under different working conditions to ensure the accuracy of the detection data.

[0067] Furthermore, it also includes a mounting plate 10, which is arranged on the fixed plate 1; a rotating shaft 11 passes through and is rotatably arranged on the side wall of the mounting plate 10; a cam 12 is arranged on the rotating shaft 11; a first bevel gear 14 is arranged on the rotating rod 4; a second bevel gear 15 is arranged on the rotating shaft 11, and the first bevel gear 14 and the second bevel gear 15 are meshed with each other. After the first bevel gear 14 drives the second bevel gear 15 to rotate, the second bevel gear 15 drives the cam 12 to rotate.

[0068] In the above scheme, the mounting plate 10 is a rectangular plate or a strip plate, the rotating shaft 11 is located at one side of the bottom of the mounting plate 10, the axial direction of the rotating shaft 11 is perpendicular to the length direction of the mounting plate 10, the cam 12 is arranged at one end of the rotating shaft 11, and the second bevel gear 15 is arranged at the other end of the rotating shaft 11. When the first bevel gear 14 rotates, the first bevel gear 14 will drive the second bevel gear 15 to rotate. Since the mounting plate 10 is fixedly connected to the fixed plate 1, the mounting plate 10 will not move when the rotating rod 4 rotates, but the bottom surface of the annular connecting plate 2 is exposed outside the bottom surface of the fixed plate 1, and the fixed plate 1 does not affect the connection between the telescopic top rod 3 and the annular connecting plate 2 and the rotation of the telescopic top rod 3 around the rotating rod 4. When the second bevel gear 15 rotates, the cam 12 will rotate synchronously. When the cam 12 rotates, the high-speed rotation of the cam 12 will produce a vibration effect, which can reduce the risk of the core drilling tube 19 being stuck. If the core drilling tube 19 has been stuck, it is only necessary to rotate the telescopic push rod 3 so that the inclined surface 312 of the telescopic push rod 3 faces the rotation direction of the toothed disc 5. At this time, the toothed disc 5 stops rotating, and the rotating rod 4 can continue to drive the cam 12 to rotate, thereby achieving a vibration effect. At the same time, the telescopic push rod 3 can also produce a small vibration effect.

[0069] Furthermore, the first driving member 9 includes a box body 901, which is arranged on the slider 8. A through groove 9011 is provided on one side of the box body 901. The through groove 9011 is a strip groove, and the through groove 9011 is connected to the limiting slide groove 101; the first transmission gear 902 is arranged on the rotating rod 4, and the first transmission gear 902 is located in the box body 901; the second transmission gear 903 is arranged in the through groove 9011, and the first transmission gear 902 and the second transmission gear 903 are meshed with each other; the toothed portion 904 is arranged on the top surface of the annular connecting plate 2, the toothed portion 904 is located in the limiting slide groove 101, and the toothed portion 904 is meshed with the second transmission gear 903.

[0070] In the above scheme, the through groove 9011 is only provided on one side of the bottom surface of the box body 901, a round rod is placed horizontally in the through groove 9011, and the second transmission gear 903 is sleeved on the round rod. It should be noted that the longitudinal section of the annular connecting plate 2 is I-shaped or T-shaped, and the cross section of this shape can prevent the annular connecting plate 2 from falling off. The fixed parts of the telescopic top rod 3 are all arranged on the bottom surface of the annular connecting plate 2, and the first transmission gear 902 is also fixedly sleeved on the rotating rod 4. It can be understood that in order to enable the second transmission gear 903 to drive the annular connecting plate 2 to rotate, the tooth shape of the toothed portion 904 is the same as the tooth shape of the first transmission gear 902, or the first transmission gear 902 can be directly installed on the top surface of the annular connecting plate 2. The first transmission gear 902 and the first bevel gear 14 have the same structure, and the second transmission gear 903 and the second bevel gear 15 have the same structure.

[0071] Furthermore, it also includes a supporting plate 13, which is slidably mounted on the rotating rod 4 along the axial direction of the rotating rod 4, and the bottom surface of the supporting plate 13 abuts on the gear plate 5. The supporting plate 13 has a through hole 1301, and the telescopic top rod 3 passes through the through hole 1301. The cam 12 slides and abuts on the upper surface of the supporting plate 13; the spring 16 is mounted on the rotating rod 4, one end of the spring 16 abuts on the bottom surface of the supporting plate 13, and the other end of the spring 16 abuts on the inner top surface of the gear plate 5. The spring 16 is used to provide a force for the supporting plate 13 to press against the cam 12.

[0072] In the above scheme, it should be noted that the support plate 13 can always abut against the outer wall of the cam 12, so that the support plate 13 can rotate with the rotating rod 4 and can also move up and down to increase the vibration effect and prevent the core barrel 19 from being stuck. The spring 16 can ensure that the support plate 13 always slides against the outer wall of the cam 12. Since the support plate 13 is a disc structure, the shape of the support plate 13 is the same as the circular part of the toothed disc 5. When the farthest end of the cam 12 and the rotating shaft 11 abuts against the support plate 13, the support plate 13 abuts against the toothed disc 5. Therefore, when the cam 12 rotates, due to the up and down reciprocating motion of the support plate 13, the hammering effect on the toothed disc 5 can be achieved, which can not only speed up the drilling speed, but also prevent the core barrel 19 and the sample from being stuck.

[0073] Furthermore, it also includes a fixed tube 17, which is arranged on the bottom surface of the toothed disc 5; a water inlet pipe 18 is arranged on one side of the fixed tube 17 and is connected to the fixed tube 17; a core drill barrel 19 is arranged at the bottom of the fixed tube 17, and the water inlet pipe 18 is used to pass water into the core drill barrel 19; the drill bit 20 is concentrically circular, and the drill bit 20 is detachably arranged at the bottom of the core drill barrel 19, and the end of the drill bit 20 away from the core drill barrel 19 has a chip groove 2002 and a water drainage groove 2001.

[0074] In the above scheme, the fixed tube 17 is a sleeve structure, the inner tube of the fixed tube 17 is connected to the rotating rod 4, the rotating rod 4 drives the inner tube to rotate, and then the inner tube drives the core drilling barrel 19 to rotate, the inner tube has a water inlet hole on the side wall, the outer tube of the fixed tube 17 and the inner tube are connected and sealed by a mechanical seal, the water inlet pipe 18 is only connected to the outer tube of the fixed tube 17, and water is injected from the outer tube to the water inlet hole of the inner tube so that the water flows into the core drilling barrel 19. The drill bit 20 is concentric and detachably mounted at the bottom of the core drilling barrel 19, and has a chip removal groove 2002 and a drainage groove 2001. The chip removal groove 2002 is used to discharge the debris generated during the core drilling process, and the drainage groove 2001 is used to discharge cooling water. During the core drilling operation, the drill bit 20 rotates at high speed to cut into the asphalt pavement, and the generated debris is discharged upward through the chip removal groove 2002. At the same time, the cooling water flows through the drainage groove 2001, and some fine debris is taken out of the core drilling barrel 19. When the drill bit 20 is worn and needs to be replaced, it can be easily removed from the bottom of the core drilling barrel 19 for replacement. The chip removal capacity of the drill bit 20 is improved, the accumulation of debris in the core drilling barrel 19 is further reduced, the risk of drill sticking is reduced, the maintenance and replacement of the drill bit 20 is convenient, the maintenance cost of the device is reduced, and the device is ensured to be able to perform core drilling operations stably for a long time.

[0075] Furthermore, the tooth groove 501 is rectangular, the longitudinal section of the abutting end 31 is a right triangle, the limiting surface 311 is parallel to the axis of the telescopic top rod 3, there are several limiting surfaces 311, the vertical surfaces of the abutting end 31 are all limiting surfaces 311, and there is one inclined surface 312.

[0076] In the above scheme, when the toothed disc 5 rotates and the inclined surface 312 of the abutting end 31 contacts the tooth groove 501, the rotating rod 4 is allowed to continue to rotate; and when the limiting surface 311 contacts the tooth groove 501, the rotating rod 4 drives the toothed disc 5 to rotate, thereby realizing the control of the toothed disc 5, which helps to resume the rotation of the stuck drill bit 20 without stopping the machine.

[0077] Furthermore, it also includes a diverter plate 22, which is arranged in the core drilling barrel 19; the inner liner plate 21 is sleeved in the core drilling barrel 19, the outer wall of the inner liner plate 21 has a first spiral groove 2101, and the inner wall of the core drilling barrel 19 has a second spiral groove 1901. The first spiral groove 2101 and the second spiral groove 1901 are combined to form a spiral flow channel 210, one end of the spiral flow channel 210 is connected to the inside of the inner liner plate 21, and the other end of the spiral flow channel 210 is connected to the outer wall of the core drilling barrel 19. The spiral flow channel 210 has a water outlet 24, and there are a plurality of water outlets 24, which are arranged at intervals along the path of the spiral flow channel 20, and the water outlet 24 is connected to the inside of the core drilling barrel.

[0078] In the above scheme, the diverter plate 22 is installed in the core drilling barrel 19 to guide the flow direction of water and debris. The inner liner plate 21 is sleeved in the core drilling barrel 19, and the first spiral groove 2101 on its outer wall is combined with the second spiral groove 1901 on the inner wall of the core drilling barrel 19 to form a spiral flow channel 210, one end of the spiral flow channel 210 is connected to the inside of the inner liner plate 21, and the other end is connected to the outer wall of the core drilling barrel 19.

[0079] During the core drilling process, after the water flows into the core drilling barrel 19, a portion of the water flows into the inner lining plate 21 through the guidance of the diverter plate 22, then flows along the spiral flow channel 210, and finally flows out from the outer wall of the core drilling barrel 19, which enhances the chip removal effect. At the same time, the spiral flow channel 210 also makes the water flow in the core drilling barrel 19 more evenly distributed, improving the cooling effect. The chip removal and cooling performance of the core drilling barrel 19 are significantly improved, the risk of drill jamming during the core drilling process is further reduced, the efficient and stable core drilling operation is ensured, the overall reliability and detection efficiency of the device are improved, and it is helpful to obtain more complete and accurate asphalt pavement core samples.

[0080] Furthermore, the column 7 has a connecting groove 702, which is located on the side of the column 7 away from the slider 8, and also includes: a connecting block 28 slidably set on the connecting groove 702; one end of the bracket 29 is detachably set on the connecting block 28, and the other end is hinged to one side of the base 6.

[0081] In the above scheme, the position of the connection block 28 in the connection groove 702 can be adjusted according to the use of the device, thereby changing the placement position of the bracket 29. For example, when drilling core sampling, the bracket 29 can be connected to the connection block 28 and fixed by bolts. The inclined bracket 29 and the column 7 form a triangular stable structure, which can enhance the stability of the column 7. When not working, the bracket 29 is removed from the connection block 28, and the bracket 29 can serve as a handle, which is convenient for the staff to pull and move the device. When the device is completely not in use, the bracket 29 can be used as a traction rod and connected to the rear of the vehicle for easy retraction.

[0082] Furthermore, it also includes a second driver 23, which is arranged on the top of the column 7, and the second driver 23 is transmission-connected to the slider 8, and the second driver 23 is used to drive the slider 8 to reciprocate along the column 7.

[0083] In the above scheme, after the second driver 23 is started, the slider 8 is driven to move back and forth in the slide slot 701 of the column 7 in the up and down direction according to the set motion parameters. For example, in the process of core drilling, the slider 8 can be first lifted to a suitable height by the second driver 23, and then accurately controlled in combination with the first driver for core drilling depth, or when continuous detection is performed at different road surface heights, the height position of the slider 8 can be quickly adjusted by the second driver 23. The automatic height adjustment of the slider 8 is realized, the automation degree and operation convenience of the device are improved, the labor intensity and time cost of manual operation are reduced, and the core drilling position and depth can be controlled more accurately, thereby improving the efficiency and accuracy of the detection work.

[0084] It also includes a paddle 25 , which is disposed on the fixed end of the telescopic top rod 3 , and is used to paddle the telescopic top rod 3 to deflect.

[0085] In the above scheme, the telescopic top rod 3 adopts a spring rod. Under the action of the spring, the telescopic top rod 3 can be pressed in the tooth groove 501, so as to achieve the effect of the ratchet and the clamp. When there is only one set of telescopic top rods 3, the paddle 25 is installed at the fixed end of the telescopic top rod 3, and the operator can apply external force to the telescopic top rod 3 to deflect it. It should be noted that as long as the limit surface 311 is opposite to the rotation direction of the toothed disc 5, the transmission connection between the rotating rod 4 and the toothed disc 5 can be completed.

[0086] When there are several telescopic top rods 3, a small gear 27 can be set at the fixed part of each telescopic top rod 3, and then a large gear ring 26 can be set, and the large gear ring 26 and the small gear 27 are meshed and transmitted, and the paddle 25 is set on the large gear ring 26. When the telescopic top rod 3 does not need to be rotated, the large gear ring 26 does not move. When the telescopic top rod 3 needs to be rotated, only the paddle 25 needs to be toggled, and the large gear ring 26 rotates, driving the synchronous telescopic rod to rotate in the same direction, thereby completing the synchronous adjustment of the entire telescopic top rod 3.

[0087] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An asphalt pavement detection device, characterized in that: include: A fixed plate (1) having a limiting slide groove (101); An annular connecting plate (2) slidably disposed in the limiting sliding groove (101); At least one telescopic top rod (3) is provided, one end of the telescopic top rod (3) is provided on the annular connecting plate (2), the other end of the telescopic top rod (3) is an abutment end (31), and the abutment end (31) has a limiting surface (311) and an inclined surface (312); A rotating rod (4), one end of which penetrates through and is rotatably disposed on the fixing plate (1); a toothed disc (5) rotatably disposed on the other end of the rotating rod (4), the toothed disc (5) having a tooth groove (501), the abutting end (31) abutting against the tooth groove (501), and after the rotating rod (4) rotates, the limiting surface (311) or the inclined surface (312) contacts the tooth groove (501); The tooth groove (501) is rectangular, the longitudinal section of the abutting end (31) is a right triangle, the limiting surface (311) is parallel to the axis of the telescopic top rod (3), there are a plurality of limiting surfaces (311), the vertical surfaces of the abutting end (31) are all the limiting surfaces (311), and there is one inclined surface (312); when the toothed disc (5) rotates and the inclined surface (312) of the abutting end (31) contacts the toothed disc (501), the rotating rod (4) continues to rotate; and when the limiting surface (311) contacts the toothed disc (501), the rotating rod (4) drives the toothed disc (5) to rotate, thereby achieving control over the toothed disc (5), which helps to resume the rotation of a stuck drill bit without stopping the machine.

2. The asphalt pavement detection device according to claim 1, characterized in that: Also includes: Base (6); A column (7) is arranged on the base (6), and the column (7) has a slide groove (701); A sliding block (8) is slidably disposed on the upright column (7), the sliding block (8) having a rotating end (801), and the rotating end (801) is disposed in the sliding groove (701); The first driving member (9) is arranged on a side of the sliding block (8) away from the column (7), the fixing plate (1) is arranged on the lower end surface of the first driving member (9), and the rotating rod (4) is drivingly connected to the first driving member (9).

3. The asphalt pavement detection device according to claim 1, characterized in that: Also includes: A mounting plate (10) disposed on the fixing plate (1); A rotating shaft (11) passes through and is rotatably disposed on a side wall of the mounting plate (10); A cam (12) is arranged on the rotating shaft (11); A first bevel gear (14) is arranged on the rotating rod (4); The second bevel gear (15) is arranged on the rotating shaft (11); the first bevel gear (14) and the second bevel gear (15) are meshed with each other; after the first bevel gear (14) drives the second bevel gear (15) to rotate, the second bevel gear (15) drives the cam (12) to rotate.

4. The asphalt pavement detection device according to claim 2, characterized in that: The first driving member (9) comprises: A box body (901) is arranged on the sliding block (8), and one side of the box body (901) has a through groove (9011), the through groove (9011) is a strip-shaped groove, and the through groove (9011) is connected to the limiting sliding groove (101); A first transmission gear (902) is arranged on the rotating rod (4), and the first transmission gear (902) is located inside the box body (901); A second transmission gear (903) is disposed in the through slot (9011), and the first transmission gear (902) and the second transmission gear (903) are meshed with each other; The tooth-shaped portion (904) is arranged on the top surface of the annular connecting plate (2), the tooth-shaped portion (904) is located in the limiting sliding groove (101), and the tooth-shaped portion (904) is meshed with the second transmission gear (903).

5. The asphalt pavement detection device according to claim 3, characterized in that: Also includes: A support plate (13) is slidably sleeved on the rotating rod (4) along the axial direction of the rotating rod (4); the bottom surface of the support plate (13) abuts against the toothed disc (5); the support plate (13) has a through hole (1301); the telescopic push rod (3) passes through the through hole (1301); and the cam (12) slidably abuts against the upper surface of the support plate (13); A spring (16) is sleeved on the rotating rod (4), one end of the spring (16) abuts against the bottom surface of the supporting plate (13), and the other end of the spring (16) abuts against the top surface inside the toothed disc (5), and the spring (16) is used to provide a force for the supporting plate (13) to press against the cam (12).

6. The asphalt pavement detection device according to claim 1, characterized in that: Also includes: A fixed tube (17) is arranged on the bottom surface of the toothed disc (5); a water inlet pipe (18), arranged on one side of the fixed pipe (17) and connected to the fixed pipe (17); A core drilling tube (19) is arranged at the bottom of the fixed tube (17), and the water inlet pipe (18) is used to pass water into the core drilling tube (19); The drill bit (20) is in the shape of a ring and is detachably arranged at the bottom of the core drill barrel (19). The end of the drill bit (20) away from the core drill barrel (19) is provided with a chip removal groove (2002) and a water drainage groove (2001).

7. The asphalt pavement detection device according to claim 1, characterized in that: The tooth groove (501) is rectangular, the longitudinal section of the abutment end (31) is a right triangle, and the limiting surface (311) is parallel to the axis of the telescopic top rod (3).

8. The asphalt pavement detection device according to claim 6, characterized in that: Also includes: A splitter plate (22) is disposed in the core drilling tube (19); An inner lining tube plate (21) is sleeved in the core drilling tube (19); the outer wall of the inner lining tube plate (21) has a first spiral groove (2101); the inner wall of the core drilling tube (19) has a second spiral groove (1901); the first spiral groove (2101) and the second spiral groove (1901) are combined to form a spiral flow channel (210); one end of the spiral flow channel (210) is connected to the interior of the inner lining tube plate (21); and the other end of the spiral flow channel (210) is connected to the outer wall of the core drilling tube (19).

9. The asphalt pavement detection device according to claim 2, characterized in that: The column (7) has a connection groove (702), the connection groove (702) is located on a side of the column (7) away from the slider (8), and further comprises: A connecting block (28) slidably disposed on the connecting groove (702); A bracket (29) has one end detachably disposed on the connection block (28) and the other end hinged to one side of the base (6).

10. The asphalt pavement detection device according to claim 9, characterized in that: Also includes: A second driver (23) is disposed on the top of the column (7), the second driver (23) is in transmission connection with the slider (8), and the second driver (23) is used to drive the slider (8) to move back and forth along the column (7).

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