Road surface coring device based on road detection

Abstract

The invention provides a road surface coring device based on road detection, which belongs to the technical field of road surface detection coring equipment and comprises a movable support frame, a vertical movable seat, a rotary drill bit, a first adjusting mechanism and a second adjusting mechanism. The movable supporting frame is provided with two guide sliding rods. And the vertical moving seat is arranged on the two guide sliding rods in a sliding manner. And the rotary drill bit is in power connection with a driving structure arranged on the vertical moving seat through a transmission mechanism. The rotary drill bit is provided with a cylindrical cavity with an open bottom end. The clamping assembly is provided with a plurality of abutting parts arranged around the inner wall of the barrel cavity. The first adjusting mechanism can drive the vertical moving seat to move up and down. The second adjusting mechanism can drive the clamping assembly to act after the core sample is separated from the road, so that the abutting parts move towards the interior of the barrel cavity and clamp the core sample. According to the road surface coring device based on road detection, it is guaranteed that a core sample is clamped and taken out along with the drill bit in the process that the drill bit leaves a drill hole, and the core sample can be effectively prevented from falling into the drill hole.

Description

Technical Field

[0001] The invention belongs to the technical field of road surface detection coring equipment, and in particular relates to a road surface coring device for road detection. Background Art

[0002] The road coring device is mainly used in the process of road inspection. Through its rotatable drill bit, it can drill holes in the road surface and take cores. The internal conditions of the road can be fully displayed through the sample core. Through the inspection of the road sample core, it is easier to judge the road, and then the quality inspection and subsequent maintenance of the road can be guaranteed.

[0003] In the prior art, the road coring device usually has a drill bit that can move vertically. During the process of drilling into the road surface, the sample core will enter the interior of the drill bit. In actual use, the road coring device, which is driven by a diesel engine and has large vibrations during the working process, involves the synchronous vibration of the drill bit. Therefore, most of the sample cores cannot fit into the drill barrel of the drill bit, that is, the diameter of the sample core will be smaller than the diameter of the drill barrel of the drill bit. After the drill bit is taken out, the sample core will break away from the drill barrel and fall into the borehole. The bottom of the road is usually sandy soil, which will form mud after being stirred with cooling water. Therefore, after the sample core falls into the borehole, the height of its top will be lower than the road surface height of the road, which makes it difficult to take out the sample core because the clamping tool cannot be placed, which increases the difficulty of coring and reduces the efficiency of coring. In addition, the sample core may fall inside during the removal process, causing it to break. Summary of the invention

[0004] The embodiment of the present invention provides a road surface coring device for road detection, aiming to solve the problem of poor practicality caused by the inability to carry the sample core out of the borehole after coring by the existing drill bit.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a road surface coring device for road detection, comprising: The mobile support frame has two guide slide bars arranged along the vertical direction; A vertical movable seat, slidably arranged on the two guide slide bars; A rotary drill bit is rotatably arranged on the vertical movable seat and is dynamically connected to a driving structure arranged on the vertical movable seat through a transmission mechanism; the rotary drill bit has a cylindrical cavity with an open bottom end; A clamping assembly is arranged in the rotary drill bit, and the clamping assembly has a plurality of abutment portions arranged around the inner wall of the barrel cavity; A first adjustment mechanism is provided on the movable support frame and is connected to the vertical movable seat, and is used to drive the vertical movable seat to move up and down; The second adjusting mechanism is arranged on the vertical moving seat and connected to the clamping assembly. It is used to drive the clamping assembly to move after the core sample leaves the road, so that each abutting part moves toward the inside of the barrel cavity and clamps the core sample.

[0006] In a possible implementation, the rotary drill bit includes: The main body is located below the vertical movable seat; the cylindrical cavity is located at the bottom of the main body; the top of the main body is provided with an open cavity with an open top; The top end of the connecting pipe is rotatably connected to the vertical movable seat, and the top end is connected to the cooling water supply structure; the bottom end of the connecting pipe is connected to the main body after extending into the open cavity, and is communicated with the cylinder cavity.

[0007] In a possible implementation, the clamping assembly includes: A plurality of flip arms are provided, each of which is arranged on the inner wall of the barrel cavity at annular intervals around the axis of the barrel cavity; the bottom end of each flip arm is rotatably connected to the body, and the rotation axis is arranged along the horizontal direction; the top end of the flip arm is the abutment portion; each flip arm has a continuous tendency to flip in a direction away from the barrel cavity; There are multiple cables, each of which corresponds to each of the flip arms, one end of each cable is wound around the transfer shaft of the corresponding flip arm; the other end of each cable extends into the open cavity; A vertical sliding ring is located in the open cavity and sleeved on the connecting pipe. The vertical sliding ring is used for fixing the other end of each cable. After the vertical sliding ring moves upward, it pulls each flip arm to flip toward the inside of the cylinder cavity through each cable. Among them, a plurality of first accommodating grooves connected with the cylindrical cavity and for each of the flip arms to be placed one by one are provided on the side wall of the main body; a plurality of first sliding holes for each of the cables to pass through are also provided in the side wall of the main body, one end of each of the first sliding holes is connected to the open cavity, and the other end is connected to the corresponding first accommodating groove.

[0008] In a possible implementation, each of the flip arms is located at the bottom of the barrel cavity.

[0009] In a possible implementation, the second adjustment mechanism includes: A lifting plate, horizontally arranged between the vertical movable seat and the body, having a through hole for the connecting pipe to pass through; A fixed pipe, which is sleeved on the connecting pipe, has a top end fixedly connected to the lifting plate, and a bottom end rotatably connected to the vertical sliding ring via a thrust bearing; There are two screw rods, both of which are arranged along the vertical direction and are distributed on both sides of the connecting pipe in the horizontal direction; the bottom end of each screw rod is fixedly connected to the lifting plate, and the top end passes through the vertical moving seat and then extends out; There are two worm wheels, the two worm wheels correspond to the two screw rods one by one, each of the worm wheels is rotatably arranged in a mounting seat arranged on the vertical movable seat; each of the worm wheels is provided with a threaded hole spirally connected to the corresponding screw rod; The adjusting shaft is rotatably arranged on the vertical movable seat along the spacing direction of the two screw rods. The adjusting shaft is provided with two worm parts, which are respectively meshed with the two worm wheels. One end of the adjusting shaft is provided with a hand wheel.

[0010] In a possible implementation, the transmission mechanism includes: A first pulley connected to a power output end of the driving structure; A second pulley is coaxially connected to the connecting pipe, is located between the lifting plate and the vertical moving seat, and corresponds to the first pulley; The transmission belt is annularly wound around the outer circumferences of the first pulley and the second pulley.

[0011] In a possible implementation, the road coring device for road detection further includes a hole expansion assembly, and the hole expansion assembly includes: There are multiple rotating blocks, each of which is arranged on the outer wall of the body at annular intervals around the axis of the barrel cavity; one end of each rotating block is rotatably connected to the body, and the rotation axis is arranged along the vertical direction; the other end of each rotating block is a drilling part, and each rotating block has a tendency to rotate toward the direction close to the barrel cavity; A plurality of push rods are provided, each of which is arranged along the vertical direction and corresponds to each of the rotating blocks one by one, the bottom end of each push rod has a second inclined portion corresponding to the first inclined portion arranged on the rotating block, and the top end of each push rod is fixedly connected to the vertical sliding ring; Among them, the side wall of the main body is provided with a plurality of second accommodating grooves for each of the rotating blocks to be placed one by one; the side wall of the main body is also provided with a plurality of second sliding holes for each of the push rods to be slidably connected one by one, one end of each of the second sliding holes is connected to the open mouth, and the other end is connected to the corresponding second accommodating groove.

[0012] In a possible implementation, each of the rotating blocks is located at the bottom of the body.

[0013] In a possible implementation, the first adjustment mechanism includes a lead screw, which is arranged along the vertical direction and rotatably arranged on the movable support frame, and the lead screw is spirally connected to a nut portion arranged on the vertical movable seat; a rotating handle is provided at the top end of the lead screw.

[0014] In a possible implementation, a plurality of walking wheels are provided at the bottom of the mobile support frame, and a plurality of lifting and moving supporting feet are provided at the bottom of the mobile support frame.

[0015] In this implementation, the mobile support frame, the vertical movable seat, the rotary drill bit, the driving structure and the transmission mechanism can ensure that the rotary drill bit corresponds to the target point. The first adjustment mechanism can ensure the vertical drive of the rotary drill bit to ensure the coring effect of the core sample. The second adjustment mechanism can be connected with the clamping assembly, and the abutment parts can clamp the core sample entering the barrel cavity after the coring is completed through the clamping assembly, thereby ensuring that the core sample is also clamped and taken out at the same time when the drill bit leaves the borehole, which can effectively prevent the core sample from falling into the borehole, improve the extraction efficiency of the core sample, and also prevent the core sample from breaking to a certain extent, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a road surface coring device for road detection according to an embodiment of the present invention Figure 1 ; Figure 2 A schematic diagram of a road surface coring device for road detection according to an embodiment of the present invention Figure 2 ; Figure 3 A schematic diagram of the main structure of a road surface coring device for road detection provided by an embodiment of the present invention (the movable support frame and the first adjustment mechanism are hidden); Figure 4 for Figure 3 A right side view (partially in cross-section) of a road surface coring device for road detection provided in an embodiment; Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the A position of the road surface coring device for road detection provided in the embodiment; Figure 6 for Figure 5 A schematic diagram of the BB cross-sectional structure of a road surface coring device for road detection provided in an embodiment; Figure 7 for Figure 6 A schematic diagram of the CC cross-sectional structure of a road coring device for road detection provided in an embodiment (clamping component part); Figure 8A partial view (partial cutaway of the main body) of a hole expansion assembly in a road surface coring device for road detection provided in an embodiment of the present invention.

[0017] Description of reference numerals: 10. Mobile support frame; 11. Vertical slide bar; 12. Travel wheel; 13. Support foot; 20. Vertical moving seat; 21. Driving structure; 30. Rotating drill bit; 31. Main body; 32. Connecting pipe; 33. Open cavity; 34. Cylinder cavity; 35. Cooling water supply structure; 40. Clamping assembly; 41. Flip arm; 42. Cable; 43. Vertical sliding ring; 44. Abutment portion; 50. The first regulating mechanism; 60. Second adjustment mechanism; 61. Lifting plate; 62. Fixed pipe; 63. Screw; 64. Worm gear; 65. Adjustment shaft; 66. Worm gear; 67. Mounting seat; 68. Thrust bearing; 69. Hand wheel; 70. expansion assembly; 71. rotating block; 72. push rod; 73. first inclined portion; 74. second inclined portion; 75. limiting column; 80. Transmission mechanism; 81. First pulley; 82. Second pulley; 83. Transmission belt. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Please also read Figure 1 and Figure 2, the road coring device for road detection provided by the present invention is now described. The road coring device for road detection comprises a mobile support frame 10, a vertical movable seat 20, a rotary drill bit 30, a first adjustment mechanism 50 and a second adjustment mechanism 60. The mobile support frame 10 has two guide slide bars arranged along the vertical direction. The vertical movable seat 20 is slidably arranged on the two guide slide bars. The rotary drill bit 30 is rotatably arranged on the vertical movable seat 20, and is dynamically connected to the driving structure 21 arranged on the vertical movable seat 20 through a transmission mechanism 80. The rotary drill bit 30 has a barrel cavity 34 with an open bottom end. The clamping assembly 40 is arranged in the rotary drill bit 30, and the clamping assembly 40 has a plurality of abutment portions 44 arranged around the inner wall of the barrel cavity 34. The first adjustment mechanism 50 is arranged on the mobile support frame 10, and is connected to the vertical movable seat 20, and can drive the vertical movable seat 20 to move up and down. The second adjustment mechanism 60 is disposed on the vertical moving seat 20 and is connected to the clamping assembly 40. After the core sample leaves the road, it can drive the clamping assembly 40 to move so that each abutting portion 44 moves toward the inside of the barrel cavity 34 and clamps the core sample.

[0020] The pavement coring device for road detection provided in this embodiment, compared with the prior art, comprises a movable support frame 10, a vertical movable seat 20, a rotary drill bit 30, a driving structure 21 and a transmission mechanism 80, which can ensure that the rotary drill bit 30 corresponds to the target point. The first adjustment mechanism 50 provided can ensure the vertical drive of the rotary drill bit 30 to ensure the coring effect of the core sample. The second adjustment mechanism 60 can be connected with the clamping assembly 40, and the clamping assembly 40 can be used to clamp the core sample entering the barrel cavity 34 after the coring is completed, thereby ensuring that the core sample is also clamped and taken out at the same time when the drill bit leaves the borehole, which can effectively prevent the core sample from falling into the borehole, improve the extraction efficiency of the core sample, and also prevent the core sample from breaking to a certain extent, and has strong practicality.

[0021] It should be noted that the rotation line of the rotary drill bit 30 is set along the vertical direction to ensure drilling of a horizontal road. This technology is existing technology and will not be described in detail here.

[0022] The driving structure 21 may be a diesel engine.

[0023] In some embodiments, the rotary drill bit 30 may be used as follows: Figure 1 and Figure 4 See the structure shown. Figure 1 and Figure 4The rotary drill bit 30 includes a body 31 and a connecting pipe 32. The body 31 is located below the vertical movable seat 20. The barrel cavity 34 is located at the bottom of the body 31. An open cavity 33 with an open top is provided at the top of the body 31. The top of the connecting pipe 32 is rotatably connected to the vertical movable seat 20, and the top is connected to the cooling water supply structure 35. After the bottom end of the connecting pipe 32 extends into the open cavity 33, it is connected to the body 31 and communicates with the barrel cavity 34. The body 31 and the connecting pipe 32 are coaxially arranged, and the axes are arranged along the vertical direction. In addition, after the connecting pipe 32 passes through the open cavity 33, the open cavity 33 will be formed into a ring-shaped open cavity 33. A flange can be provided on the top of the open cavity 33 to facilitate connection.

[0024] The upper part of the body 31 is an open cavity 33 , and the lower part is a cylindrical cavity 34 . The connecting pipe 32 is fixedly connected to the body 31 and is in communication with the cylindrical cavity 34 , thereby ensuring that cooling water can enter the cylindrical cavity 34 .

[0025] The connecting pipe 32 can ensure the connection with the main body 31, and can also ensure the rotation connection with the vertical movable seat 20. The connecting pipe 32 is connected to the barrel cavity 34, and the external cooling water supply structure 35 can ensure that the cooling water is transferred to the connecting pipe 32 and then to the barrel cavity 34, so as to ensure that the cooling water can be immersed in the bottom end of the main body 31, that is, the bottom end of the rotating drill bit 30, to achieve cooling.

[0026] It should be noted that the cooling water supply structure 35 may include a sleeve mounted on the top of the connecting pipe 32, the side wall of the sleeve has a water inlet and is connected to a water pipe, the other end of the water pipe is connected to a water pump and can be placed in a water bucket. This technology is existing technology and will not be repeated here.

[0027] In this embodiment, the main body 31 can be connected in multiple sections, see Figure 3 , that is, each chamber can be formed by assembly, which is more convenient for manufacturing. Figure 1 or Figure 2 The top of the open cavity 33 needs to be provided with a flange to ensure that the locking screw 63 is connected to the multiple parts.

[0028] In some embodiments, the clamping assembly 40 may be configured as follows: Figure 4 and Figure 7 See the structure shown. Figure 4 and Figure 7The clamping assembly 40 includes a flip arm 41, a cable 42 and a vertical sliding ring 43. There are multiple flip arms 41, and each flip arm 41 is arranged on the inner wall of the barrel cavity 34 in an annular interval around the axis of the barrel cavity 34. The bottom end of each flip arm 41 is rotatably connected to the body 31, and the rotation axis is arranged along the horizontal direction. The top end of the flip arm 41 is an abutment portion 44. Each flip arm 41 continues to have a tendency to flip in a direction away from the barrel cavity 34. There are multiple cables 42, and each cable 42 corresponds to each flip arm 41 one by one. One end of each cable 42 is wound around the transfer shaft of the corresponding flip arm 41. The other end of each cable 42 extends into the open cavity 33. The vertical sliding ring 43 is located in the open cavity 33 and is sleeved on the connecting pipe 32. The vertical sliding ring 43 can be fixedly connected to the other end of each cable 42. After the vertical sliding ring 43 is able to move upward, the cables 42 are used to pull the flipping arms 41 to flip toward the inside of the cylinder cavity 34 .

[0029] Specifically, the side wall of the body 31 is provided with a plurality of first receiving grooves connected with the barrel cavity 34 and for the respective flipping arms 41 to be placed one by one. The side wall of the body 31 is also provided with a plurality of first sliding holes for the respective cables 42 to pass through, one end of each first sliding hole is connected with the open cavity 33, and the other end is connected with the corresponding first receiving groove. Each first receiving groove and each first sliding hole can ensure that each flipping arm 41 and each cable 42 are hidden, thereby ensuring the smoothness of the inner wall of the barrel cavity 34, and avoiding damage to the core sample entering.

[0030] The bottom end of the flip arm 41 is rotatably connected to the shaft set in the first accommodating groove, and the cable 42 is wound around the rotating shaft on the flip arm 41, which can pull the flip arm 41 to flip so that the abutment portion 44 moves toward the axial direction of the barrel cavity 34, thereby clamping the core sample entering the barrel cavity 34 to prevent the core sample entering the barrel cavity 34 from escaping from the barrel cavity 34, thereby ensuring that the core sample can move synchronously with the main body 31 and thus escaping from the borehole.

[0031] The cable 42 can ensure that after being pulled upward, it is pulled by the rotating shaft of the flip arm 41 to rotate, so that the abutment portion 44 moves toward the axial direction of the barrel cavity 34 and contacts the outer wall of the core sample inside the barrel cavity 34, thereby clamping and fixing the core sample. After the vertical sliding ring 43 moves upward, it can ensure that each cable 42 is pulled, thereby ensuring that each flip arm 41 is flipped. The cable 42 also has a better feature that during the downward movement of the vertical sliding ring 43, because it has a certain flexibility, it will not affect the flip arms 41.

[0032] In this embodiment, a magnet may be provided on the side of each flip arm 41 away from the barrel cavity 34, and a nebium magnet corresponding to the magnet may be provided or embedded in the corresponding first receiving groove, thereby ensuring that after the flip arm 41 flips toward the inside of the barrel cavity 34, it can still rotate back to the first receiving groove after being pulled away from the cable 42. Of course, a torsion spring may also be provided on the rotating shaft of each flip arm 41 to ensure that each flip arm 41 can return to the corresponding first receiving groove without being subjected to external force.

[0033] In some embodiments, the flip arm 41 may be configured as follows: Figure 7 See the structure shown. Figure 7 Each flip arm 41 is located at the bottom of the barrel cavity 34. This structure can ensure that it can adapt to road surfaces of different depths and core samples of different lengths, thereby improving adaptability.

[0034] In some embodiments, the second adjustment mechanism 60 may be implemented as follows: Figures 1 to 5 See the structure shown. Figures 1 to 5 The second adjustment mechanism 60 includes a lifting plate 61, a fixed tube 62, a screw rod 63, a worm gear 64 and an adjustment shaft 65. The lifting plate 61 is horizontally arranged between the vertical moving seat 20 and the body 31, and has a through hole for the connecting tube 32 to pass through. The fixed tube 62 is sleeved on the connecting tube 32, the top end is fixedly connected to the lifting plate 61, and the bottom end is rotatably connected to the vertical sliding ring 43 through a thrust bearing 68. There are two screw rods 63, both of which are arranged along the vertical direction and are distributed on both sides of the connecting tube 32 in the horizontal direction. The bottom end of each screw rod 63 is fixedly connected to the lifting plate 61, and the top end passes through the vertical moving seat 20 and then extends out. There are two worm gears 64, and the two worm gears 64 correspond to the two screw rods 63 one by one. Each worm gear 64 is rotatably arranged in a mounting seat 67 arranged on the vertical moving seat 20. Each worm gear 64 is provided with a threaded hole spirally connected to the corresponding screw rod 63. The adjusting shaft 65 is rotatably disposed on the vertical movable seat 20 along the spacing direction of the two screw rods 63 . The adjusting shaft 65 is provided with two worm parts 66 , which are respectively engaged with the two worm wheels 64 . A hand wheel 69 is disposed at one end of the adjusting shaft 65 .

[0035] In the process of lifting and lowering the vertical movable seat 20, the height of the vertical sliding ring 43 can be adjusted by the second adjustment mechanism 60 at the same time. Specifically, the staff can rotate the adjustment shaft 65 through the hand wheel 69, and the adjustment shaft 65 drives the two worm wheels 64 to rotate through the two worm parts 66, and the worm wheel 64 is rotatably set in the mounting seat 67. After the rotation, it will drive the two screws 63 to move up and down at the same time, thereby driving the lifting plate 61 to move up and down, and driving the fixed pipe 62 to move up and down, and driving the vertical sliding ring 43 to move up and down through the thrust bearing 68. This structure can avoid interference with the transmission mechanism 80, and at the same time can ensure the driving of the clamping assembly 40 after the drilling is completed. In addition, the meshing of the worm wheel 64 and the worm part 66, and the spiral cooperation of the worm wheel 64 and the screw 63 can ensure the adjustment accuracy of the lifting plate 61, and at the same time can form a self-locking, which can ensure the stability of the clamping assembly 40.

[0036] The worm wheel 64 is rotatably arranged in the mounting seat 67. The mounting seat 67 may be a rectangular frame having a vertical through hole for the screw rod 63 to pass through. The upper and lower ends of the worm wheel 64 may be rotatably connected to the mounting seat 67 through a plane bearing to ensure the smooth rotation of the worm wheel 64.

[0037] In this embodiment, the thrust bearing 68 is capable of bearing the axial force, thereby ensuring that the fixed tube 62 drives the vertical sliding ring 43 to move up and down. Two annular grooves can be provided on the fixed tube 62, and the two annular grooves are respectively located on both sides of the thrust bearing 68, and a retaining spring is provided in the annular groove to further prevent the fixed tube 62 from being separated from the thrust bearing 68.

[0038] In some embodiments, the transmission mechanism 80 may be configured as follows: Figure 3 See the structure shown. Figure 3 The transmission mechanism 80 includes a first pulley 81, a second pulley 82 and a transmission belt 83. The first pulley 81 is connected to the power output end of the driving structure 21. The second pulley 82 is coaxially connected to the connecting pipe 32, and is located between the lifting plate 61 and the vertical moving seat 20, and corresponds to the first pulley 81. The transmission belt 83 is annularly wound around the outer circumference of the first pulley 81 and the second pulley 82. This structure can ensure long-distance transmission and the stability of the transmission, and has a simple structure and strong practicality.

[0039] In some embodiments, see Figure 1 and Figure 8, the road coring device for road detection also includes a hole expansion assembly 70, and the hole expansion assembly 70 includes a rotating block 71 and a push rod 72. There are multiple rotating blocks 71, and each rotating block 71 is arranged on the outer wall of the main body 31 in an annular interval around the axis of the barrel cavity 34. One end of each rotating block 71 is rotatably connected to the main body 31, and the axis of rotation is arranged along the vertical direction. The other end of each rotating block 71 is a drilling part, and each rotating block 71 has a continuous tendency to rotate toward the direction close to the barrel cavity 34. There are multiple push rods 72, and each push rod 72 is arranged along the vertical direction and corresponds to each rotating block 71 one by one. The bottom end of each push rod 72 has a second inclined portion 74 corresponding to the first inclined portion 73 arranged on the rotating block 71, and the top end of each push rod 72 is fixedly connected to the vertical sliding ring 43.

[0040] The side wall of the body 31 is provided with a plurality of second receiving grooves for the rotation blocks 71 to be placed one by one. The side wall of the body 31 is also provided with a plurality of second sliding holes for the push rods 72 to be slidably connected one by one, and one end of each second sliding hole is connected to the open cavity 33, and the other end is connected to the corresponding second receiving groove.

[0041] After coring, the drilled hole needs to be repaired, that is, new road surface material is filled into the drilled hole, and the drilled hole is sealed after the material is formed. Each push rod 72 cooperates with the first inclined surface 73 on each rotating block 71 through the second inclined surface 74 at the bottom. After the push rod 72 is pressed down, each rotating block 71 is driven to flip outward, and then the drilling part of each rotating block 71 moves to the outside of the outer wall of the body 31. In the process of drilling, each push rod 72 can be pushed to move downward gradually through the vertical sliding ring 43, so that each rotating block 71 is gradually flipped outward, and then the drilled hole can be narrow at the top and wide at the bottom, that is, the diameter of the top is smaller than the diameter of the bottom. This kind of frustum-shaped hole can effectively ensure that after the repair, the repair material can be stably placed therein after it is formed, so as to prevent it from being separated from the road due to external force.

[0042] In this embodiment, a magnet may be provided on one side of each rotating block 71 close to the barrel cavity 34, and a nebium magnet corresponding to the magnet may be provided or embedded in the corresponding second receiving groove, thereby ensuring that after the rotating block 71 is turned outside the barrel cavity 34, it can still rotate back to the second receiving groove after being separated from the action of the push rod 72. Of course, a torsion spring may also be provided on the rotating shaft of each rotating block 71 to ensure that each rotating block 71 can return to the corresponding second receiving groove without being subjected to external force.

[0043] It should be noted that each rotating block 71 rotates outwardly at a maximum rotation angle, that is, each rotating block 71 will not completely disengage from the second receiving groove to prevent mud from entering the second receiving groove. Specifically, a limit column 75 can be provided on each rotating block 71, and an arc-shaped sliding cavity for sliding the limit column 75 can be provided at the top of each second receiving groove. Figure 8 .

[0044] For further understanding, the reaming assembly 70 and the clamping assembly 40 provided in this embodiment correspond to the downward movement and upward movement of the vertical sliding ring 43, respectively. Specifically, the vertical sliding ring 43 has an origin position height. When the vertical sliding ring 43 is at the origin position height, it will not cause any influence on the reaming assembly 70 and the clamping assembly 40. When the vertical sliding ring 43 descends at the origin position height, it will drive the reaming assembly 70 to move, and when the vertical sliding ring 43 ascends at the origin position height, it will drive the clamping assembly 40 to move.

[0045] In some embodiments, the hole expansion assembly 70 may be used as follows: Figure 8 See the structure shown. Figure 8 Each rotating block is located at the bottom of the main body 31. This structure can ensure that it can adapt to roads of different depths and then adapt to drilling holes of different depths, and has strong adaptability.

[0046] In some embodiments, the first adjustment mechanism 50 may be implemented as follows: Figures 1 to 4 See the structure shown. Figures 1 to 4 The first adjustment mechanism 50 includes a lead screw, which is arranged along the vertical direction and rotatably arranged on the movable support frame 10. The lead screw is screw-matched with a nut portion arranged on the vertical movable seat 20. A rotating handle is arranged at the top of the lead screw. The screw-matching of the lead screw and the nut portion can ensure the lifting and lowering movement of the vertical movable seat 20, thereby ensuring the lifting and lowering adjustment of the rotary drill 30.

[0047] In some embodiments, the mobile support frame 10 may be configured as follows: Figure 1 and Figure 2 See the structure shown. Figure 1 and Figure 2 The bottom of the mobile support frame 10 is provided with a plurality of running wheels 12, and the bottom of the mobile support frame 10 is provided with a plurality of support feet 13 that can be lifted and moved. The running wheels 12 can ensure the movement control of the mobile support frame 10, and each support frame can ensure that the mobile support frame 10 is lifted at the coring position to replace each running wheel 12 and support the mobile support frame 10 to ensure stability during the coring process.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A road surface coring device for road detection, characterized in that: include: The movable support frame has two guide slide bars arranged along the vertical direction; A vertical movable seat, slidably arranged on the two guide slide bars; A rotary drill bit is rotatably arranged on the vertical movable seat and is dynamically connected to a driving structure arranged on the vertical movable seat through a transmission mechanism; the rotary drill bit has a cylindrical cavity with an open bottom end; A clamping assembly is arranged in the rotary drill bit, and the clamping assembly has a plurality of abutment portions arranged around the inner wall of the barrel cavity; A first adjustment mechanism is provided on the movable support frame and is connected to the vertical movable seat, and is used to drive the vertical movable seat to move up and down; The second adjusting mechanism is arranged on the vertical moving seat and connected to the clamping assembly. It is used to drive the clamping assembly to move after the core sample leaves the road, so that each abutting part moves toward the inside of the barrel cavity and clamps the core sample.

2. The road surface coring device for road detection according to claim 1, characterized in that: The rotary drill bit comprises: The main body is located below the vertical movable seat; the cylindrical cavity is located at the bottom of the main body; the top of the main body is provided with an open cavity with an open top; The top end of the connecting pipe is rotatably connected to the vertical movable seat, and the top end is connected to the cooling water supply structure; the bottom end of the connecting pipe is connected to the main body after extending into the open cavity, and is communicated with the cylinder cavity.

3. The road surface coring device for road detection according to claim 2, characterized in that: The clamping assembly comprises: A plurality of flip arms are provided, each of which is arranged on the inner wall of the barrel cavity at annular intervals around the axis of the barrel cavity; the bottom end of each flip arm is rotatably connected to the body, and the rotation axis is arranged along the horizontal direction; the top end of the flip arm is the abutment portion; each flip arm has a continuous tendency to flip in a direction away from the barrel cavity; There are multiple cables, each of which corresponds to each of the flip arms, one end of each cable is wound around the transfer shaft of the corresponding flip arm; the other end of each cable extends into the open cavity; A vertical sliding ring is located in the open cavity and sleeved on the connecting pipe. The vertical sliding ring is used for fixing the other end of each cable. After the vertical sliding ring moves upward, it pulls each flip arm to flip toward the inside of the cylinder cavity through each cable. Among them, a plurality of first accommodating grooves connected with the cylindrical cavity and for each of the flip arms to be placed one by one are provided on the side wall of the main body; a plurality of first sliding holes for each of the cables to pass through are also provided in the side wall of the main body, one end of each of the first sliding holes is connected to the open cavity, and the other end is connected to the corresponding first accommodating groove.

4. The road surface coring device for road detection according to claim 3, characterized in that: Each of the turning arms is located at the bottom of the barrel cavity.

5. The road surface coring device for road detection according to claim 3, characterized in that: The second adjustment mechanism comprises: A lifting plate, horizontally arranged between the vertical movable seat and the body, having a through hole for the connecting pipe to pass through; A fixed pipe, which is sleeved on the connecting pipe, has a top end fixedly connected to the lifting plate, and a bottom end rotatably connected to the vertical sliding ring via a thrust bearing; There are two screw rods, both of which are arranged along the vertical direction and are distributed on both sides of the connecting pipe in the horizontal direction; the bottom end of each screw rod is fixedly connected to the lifting plate, and the top end passes through the vertical moving seat and then extends out; There are two worm wheels, the two worm wheels correspond to the two screw rods one by one, each of the worm wheels is rotatably arranged in a mounting seat arranged on the vertical movable seat; each of the worm wheels is provided with a threaded hole spirally connected to the corresponding screw rod; The adjusting shaft is rotatably arranged on the vertical movable seat along the spacing direction of the two screw rods. The adjusting shaft is provided with two worm parts, which are respectively meshed with the two worm wheels. One end of the adjusting shaft is provided with a hand wheel.

6. The road surface coring device for road detection according to claim 5, characterized in that: The transmission mechanism comprises: A first pulley connected to a power output end of the driving structure; A second pulley is coaxially connected to the connecting pipe, is located between the lifting plate and the vertical moving seat, and corresponds to the first pulley; The transmission belt is annularly wound around the outer circumferences of the first pulley and the second pulley.

7. The road surface coring device for road detection according to claim 3, characterized in that: The road coring device for road detection further includes a hole expansion assembly, and the hole expansion assembly includes: There are multiple rotating blocks, each of which is arranged on the outer wall of the body at annular intervals around the axis of the barrel cavity; one end of each rotating block is rotatably connected to the body, and the rotation axis is arranged along the vertical direction; the other end of each rotating block is a drilling part, and each rotating block has a tendency to rotate toward the direction close to the barrel cavity; A plurality of push rods are provided, each of which is arranged along the vertical direction and corresponds to each of the rotating blocks one by one, the bottom end of each push rod has a second inclined portion corresponding to the first inclined portion arranged on the rotating block, and the top end of each push rod is fixedly connected to the vertical sliding ring; Among them, the side wall of the main body is provided with a plurality of second accommodating grooves for each of the rotating blocks to be placed one by one; the side wall of the main body is also provided with a plurality of second sliding holes for each of the push rods to be slidably connected one by one, one end of each of the second sliding holes is connected to the open mouth, and the other end is connected to the corresponding second accommodating groove.

8. The road surface coring device for road detection according to claim 7, characterized in that: Each of the rotating blocks is located at the bottom of the body.

9. The road surface coring device for road detection according to claim 1, characterized in that: The first adjustment mechanism includes a lead screw, which is arranged along the vertical direction and rotatably arranged on the movable support frame. The lead screw is spirally connected with a nut portion arranged on the vertical movable seat; a rotating handle is arranged at the top of the lead screw.

10. The road surface coring device for road detection according to claim 1, characterized in that: The bottom of the mobile support frame is provided with a plurality of walking wheels, and the bottom of the mobile support frame is provided with a plurality of supporting feet which can be lifted and moved.

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