A road sampling device

Abstract

The present invention relates to the technical field of highway base detection, and provides a road sampling device, including: a moving device; a feeding device, which is arranged on the moving device; a sampling device, which can move in the up and down directions under the drive of the feeding device, and the sampling device includes: a mounting seat, which is arranged on the feeding device; a rotating hammer, which is arranged on the mounting seat and has a rotating power shaft and a hammering part; an inner drill tube, which is connected to the rotating power shaft and has a drill cutter at the bottom; an outer drill tube, which is outer-mounted on the inner drill tube and can rotate relative to the inner drill tube; a rotating plate, which can be rotatably arranged on the top of the inner drill tube; a force distribution component, including a distribution plate and a sliding block, the distribution plate is hinged to the rotating plate and stops against the hammering part, and the sliding block is slidably connected to the distribution plate and is hinged to the outer drill tube. The present invention can prevent the situation of shaking due to polarization by setting a double drill tube structure, so that the roundness of the sample can meet the requirements, improve the sampling quality, and prevent the occurrence of tool jamming.

Description

Technical Field

[0001] The invention relates to the technical field of highway base detection, in particular to a road surface sampling device. Background Art

[0002] In the prior art, after the completion of road construction, the road base needs to be inspected, usually by drilling cylindrical sample holes on the road surface to take out cylindrical samples, and then inspecting the samples to determine whether the road construction meets the standards. However, during the drilling and sampling process of the road sampling device, the road base may have a local hardness that is relatively high, resulting in inconsistent base hardness in the sampling area. When the sampling barrel encounters a harder area of ​​the base, the sampling barrel will vibrate, causing the sampling barrel to polarize, resulting in insufficient roundness of the sample, and destroying the internal stress of the sample, affecting the accuracy of the sampling test. Summary of the invention

[0003] Based on this, it is necessary to provide a road surface sampling device to address the problems existing in current road surface sampling, which can solve the problem that the roundness of the sample is not enough during road surface sampling, affecting the sampling and detection accuracy.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A road sampling device comprises: a moving device; a feeding device, which is arranged on the moving device; a sampling device, which can move in the up and down directions under the drive of the feeding device, and the sampling device comprises: a mounting seat, which is arranged on the feeding device; a rotating hammer, which is arranged on the mounting seat and has a rotating power shaft and a hammer part; an inner drill barrel, which is connected to the rotating power shaft and has a drill cutter at the bottom; an outer drill barrel, which is outermost of the inner drill barrel and can rotate relative to the inner drill barrel; a rotating plate, which is rotatably arranged on the top of the inner drill barrel; a force distribution assembly, which comprises a distribution plate and a sliding block, the distribution plate is hinged to the rotating plate and stops against the hammer part, and the sliding block is slidably connected to the distribution plate and is hinged to the outer drill barrel.

[0006] Preferably, the hammering part includes a circular plate and an annular protrusion, the annular protrusion is provided on the circular plate and abuts against the distribution plate, the circular plate is provided with a first through hole, and the rotating power shaft passes through the first through hole.

[0007] Preferably, the rotating plate is circular and is provided with a second through hole, the rotating power shaft is passed through the second through hole, and a plurality of the force distribution components are provided around the circumference of the rotating plate.

[0008] Preferably, the rotating plate is provided with an annular groove, the inner drill tube is provided with an annular sliding block, and the annular sliding block is arranged in the annular groove.

[0009] Preferably, the distribution plate includes a first plate body and a second plate body vertically connected, the first plate body is perpendicular to the rotating plate, the rotating plate is provided with a first hinge seat, the first hinge seat is hingedly connected to the first plate body, the second plate body stops at the hammer part, and is slidably connected to the sliding block.

[0010] Preferably, the sliding block extends in a direction perpendicular to the rotating plate and has the same height as the first plate body, and the outer drill tube is provided with a second hinge seat, and the second hinge seat is hingedly connected to the sliding block.

[0011] Preferably, the sliding block is provided with a first sliding groove, the two opposite groove walls of the first sliding groove are provided with a second sliding groove, the second plate body is slidably arranged in the first sliding groove, and sliding protrusions are provided at both ends of the width direction of the second plate body, and the sliding protrusions are slidably arranged in the second sliding groove.

[0012] Preferably, the outer circumferential wall of the inner drill tube is provided with a limiting groove in an annular structure, and the inner circumferential wall of the outer drill tube is provided with a limiting convex portion in an annular structure, and the limiting convex portion is arranged in the limiting groove.

[0013] Preferably, the outer peripheral wall of the outer drill tube is provided with a plurality of inclined convex strips, and the plurality of inclined convex strips are arranged at intervals along the circumferential direction of the outer drill tube.

[0014] Preferably, the feeding device includes a column, a movable seat, a threaded rod, and an adjusting wheel, the column is arranged on the movable device, the movable seat is slidably arranged on the column and is connected to the mounting seat, the threaded rod is rotatably arranged on the movable device and is threadedly connected to the movable seat, and the adjusting wheel is connected to the threaded rod.

[0015] The beneficial effects of the present invention are:

[0016] The present invention adopts a double drill barrel structure composed of an inner drill barrel and an outer drill barrel. When the inner drill barrel encounters a hard road surface in the process of drilling, the outer drill barrel and the inner drill barrel work together under the action of a rotating hammer, which can effectively prevent the occurrence of polarization shaking, thereby enabling the roundness of the sample after drilling to meet the requirements, thereby enabling the roundness of the sample after drilling by the outer drill barrel to meet the requirements, thereby improving the sampling quality. By setting a force distribution component, the hammer force can be reasonably distributed between the inner drill barrel and the outer drill barrel, which helps to prevent the inner drill barrel and the outer drill barrel from getting stuck when encountering a harder road surface, and can keep the feed amount of the inner drill barrel and the outer drill barrel consistent, which is also conducive to breaking the harder road surface more easily, ensuring the smooth progress of the sampling process. By setting an inclined convex strip on the outer peripheral wall of the outer drill barrel, the roughness of the drill hole after sampling can be improved, which is conducive to improving the connection force between the material and the drill hole during later repair, improving the connection strength between the material and the drill hole, and thereby improving the repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a road surface sampling device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0019] Figure 3 for Figure 1 A local enlarged schematic diagram of point B;

[0020] Figure 4 It is a left side view of a road surface sampling device according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Sectional view along line AA;

[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of point C;

[0023] Figure 7 for Figure 5 A local enlarged schematic diagram of point D.

[0024] in:

[0025] 100, road sampling device; 110, moving device; 120, feeding device; 121, column; 122, movable seat; 123, threaded rod; 124, adjusting wheel; 130, sampling device; 131, mounting seat; 132, rotating hammer; 1321, rotating power shaft; 1322, hammering part; 1304, circular plate; 1304a, first through hole; 1305, annular protrusion; 133, inner drill tube; 1331, drill bit; 1332, annular slider; 1 333, limiting convex portion; 134, outer drill tube; 1341, second hinge seat; 1342, limiting groove; 1343, inclined convex strip; 135, rotating plate; 135a, second through hole; 135b, annular slide groove; 1351, first hinge seat; 136, force distribution assembly; 1361, distribution plate; 1301, first plate body; 1302, second plate body; 1303, sliding convex portion; 1362, sliding block; 1362a, first slide groove; 1362b, second slide groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. 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.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Reference Figures 1 to 7 The embodiment of the present invention provides a road sampling device 100, comprising: a moving device 110, a feeding device 120 and a sampling device 130, wherein the feeding device 120 is arranged on the moving device 110; the sampling device 130 can move in the up and down directions under the driving of the feeding device 120, and the sampling device 130 comprises: a mounting seat 131, a rotating hammer 132, an inner drill tube 133, an outer drill tube 134, a rotating plate 135 and a force distribution assembly 136, wherein the mounting seat 131 is arranged on the feeding device 120; the rotating hammer 132 is arranged on the mounting seat 131, It has a rotating power shaft 1321 and a hammer part 1322; the inner drill barrel 133 is connected to the rotating power shaft 1321, and a drill bit 1331 is provided at the bottom; the outer drill barrel 134 is outermostly mounted on the inner drill barrel 133, and can rotate relative to the inner drill barrel 133; the rotating plate 135 is rotatably arranged on the top of the inner drill barrel 133; the force distribution assembly 136 includes a distribution plate 1361 and a sliding block 1362, the distribution plate 1361 is hinged to the rotating plate 135, and stops against the hammer part 1322, the sliding block 1362 is slidably connected to the distribution plate 1361, and is hinged to the outer drill barrel 134.

[0030] The mobile device 110 may refer to a mechanism capable of movement, and may be, but not limited to, manually driven, electrically driven, fuel driven, etc., which are not limited here. For example, the mobile device 110 may be a cart.

[0031] The feeding device 120 may refer to a mechanism or component that can provide up and down movement, and may include but is not limited to a linear module, a linear motor, a screw drive mechanism or a hydraulic rod, etc., and is not limited here.

[0032] The rotary hammer 132 may refer to a component that can generate a rotation and hammering action, and its structure may refer to an electric hammer mechanism or a pile driver, etc. The rotary hammer 132 has a rotary power shaft 1321 and a hammering part 1322, the rotary power shaft 1321 can output a rotation action, and the hammering part 1322 can output a hammering action in the up and down directions.

[0033] When it is necessary to drill holes in the road surface for sampling, the moving device 110 moves to the sampling position, and the feeding device 120 drives the sampling device 130 to feed downward for drilling and sampling. When drilling and sampling, the rotating hammer 132 starts to work, the rotating power shaft 1321 drives the inner drill tube 133 to rotate at a high speed, and the drill 1331 at the bottom of the inner drill tube 133 contacts the road surface for drilling, and the hammer part 1322 can act on the outer drill tube 134 through the force distribution component 136 to hammer downward to drill holes, and can also act on the inner drill tube 133 through the rotating plate 135 to hammer the inner drill tube 133 to drill holes.

[0034] Since a double drill tube structure consisting of an inner drill tube 133 and an outer drill tube 134 is adopted, in the initial state, the inner drill tube 133 and the outer drill tube 134 do not have relative displacement in the vertical direction, and when the hardness of the road base layer directly below the inner drill tube 133 and the road base layer on the side of the outer drill tube 134 are consistent, the hammering force distributed by the hammering part 1322 to the inner drill tube 133 and the outer drill tube 134 through the force distribution component 136 is consistent, but since the inner drill tube 133 has one more than the outer drill tube 134, the hammering force of the hammering part 1322 is consistent. The rotating power makes the drilling and descending speed of the inner drill barrel 133 higher than the descending speed of the outer drill barrel 134, causing the inner drill barrel 133 and the outer drill barrel 134 to shift relative to each other in the up and down directions. At this time, the distribution plate 1361 is tilted upward relative to the rotating plate 135, and the contact point between the hammer part 1322 and the distribution plate 1361 is closer to the outer drill barrel 134, so that more hammering force will be distributed to the outer drill barrel 134 to adjust the downward hammering force of the inner drill barrel 133 and the outer drill barrel 134.

[0035] Secondly, when the hardness of the road base layer directly below the inner drill tube 133 and the road base layer on the side of the outer drill tube 134 are inconsistent, when encountering a locally harder area in the road base layer, for example, the road base layer on the side of the outer drill tube 134 is harder than the road base layer directly below the inner drill tube 133, due to the different hardness of the bottom of the inner drill tube 133 and the side of the outer drill tube 134, the inner drill tube 133 and the outer drill tube 134 are relatively displaced in the up and down directions at the initial stage, and the outer drill tube 134 is located on the upper side of the inner drill tube 133. At this time, the distribution plate 1361 is tilted upward relative to the rotating plate 135, and the hammer part 1322 is aligned with the distribution plate 136. 1 is closer to the outer drill barrel 134, and more hammering force will be allocated to the outer drill barrel 134. As the hammering part 1322 continues to hammer, the outer drill barrel 134 applies a greater hammering force to the hard part, so that the hard road surface layer can be broken more easily, and the outer drill barrel 134 gradually shifts downward relative to the inner drill barrel 133, and finally the outer drill barrel 134 and the inner drill barrel 133 can maintain the same height, so that the overall feed amount of the outer drill barrel 134 and the inner drill barrel 133 is consistent, which can effectively prevent the tool from getting stuck and the polarization of the inner drill barrel 133, so that the roundness of the sample can meet the requirements.

[0036] The pavement sampling device 100 of the present invention has a double drill barrel structure composed of an inner drill barrel 133 and an outer drill barrel 134. When the hardness of the pavement base layer directly below the inner drill barrel 133 and the pavement base layer on the side of the outer drill barrel 134 is consistent, the outer drill barrel 134 and the inner drill barrel 133 work together under the action of the rotating hammer 132, which can effectively prevent the occurrence of polarization and shaking, thereby ensuring that the roundness of the sample after drilling can meet the requirements and improve the sampling quality. By setting the force distribution component 136, when encountering a locally harder pavement during the sampling process, the hammer force can be reasonably distributed between the inner drill barrel 133 and the outer drill barrel 134, which helps to prevent the inner drill barrel 133 and the outer drill barrel 134 from getting stuck when encountering a harder pavement, and can keep the feed amount of the inner drill barrel 133 and the outer drill barrel 134 consistent, which is also conducive to breaking the harder pavement more easily and ensuring the smooth progress of the sampling process.

[0037] Preferably, Figure 6 As shown, the hammering part 1322 includes a circular plate 1304 and an annular protrusion 1305. The annular protrusion 1305 is provided on the circular plate 1304 and abuts against the distribution plate 1361. The circular plate 1304 is provided with a first through hole 1304a, and the rotating power shaft 1321 is passed through the first through hole 1304a.

[0038] In the above structure, the hammering part 1322 of the circular structure can provide a wider range and more uniform hammering force, which can better act on the inner drill tube 133 and the outer drill tube 134. The annular protrusion 1305 has a smaller contact surface with the distribution plate 1361, which is conducive to increasing the hammering force of the hammering part 1322 on the distribution plate 1361, thereby enabling the inner drill tube 133 and the outer drill tube 134 to obtain a larger hammering force, which is conducive to the inner drill tube 133 and the outer drill tube 134 to more easily break the road surface layer.

[0039] Preferably, Figure 6 As shown, the rotating plate 135 is circular and has a second through hole 135 a . The rotating power shaft 1321 passes through the second through hole 135 a . A plurality of force distribution components 136 are arranged around the circumference of the rotating plate 135 .

[0040] Since the outer drill tube 134 is connected to the rotating plate 135 through the force distribution assembly 136, and the rotating plate 135 is rotatably connected to the inner drill tube 133, the installation stability and reliability between the outer drill tube 134 and the inner drill tube 133 can be improved by setting the rotating plate 135 in a circular shape. In addition, the circular rotating plate 135 is also convenient for arranging more force distribution assemblies 136. By setting a plurality of force distribution assemblies 136, the installation stability and reliability between the outer drill tube 134 and the inner drill tube 133 can be improved on the one hand, and the force of the hammering part 1322 can be more uniformly and more widely applied to the inner drill tube 133 and the outer drill tube 134, which can improve the hammering effect of the inner drill tube 133 and the outer drill tube 134 on the road surface layer, which is beneficial to drilling sampling.

[0041] Preferably, Figure 6 As shown, the rotating plate 135 is provided with an annular sliding groove 135b, and the inner drill tube 133 is provided with an annular sliding block 1332, and the annular sliding block 1332 is arranged in the annular sliding groove 135b.

[0042] In the above technical solution, the rotating plate 135 cooperates with the annular slider 1332 of the inner drill tube 133 through the annular groove 135b, so that the rotating plate 135 can rotate relative to the inner drill tube 133. This structure is relatively simple and easy to manufacture, and can ensure reliable and stable relative rotation between the rotating plate 135 and the inner drill tube 133.

[0043] Preferably, Figure 6 As shown, the distribution plate 1361 includes a first plate body 1301 and a second plate body 1302 which are vertically connected. The first plate body 1301 is perpendicular to the rotating plate 135. The rotating plate 135 is provided with a first hinge seat 1351. The first hinge seat 1351 is hingedly connected to the first plate body 1301. The second plate body 1302 stops at the hammer part 1322 and is slidably connected to the sliding block 1362.

[0044] In the above structure, the distribution plate 1361 is L-shaped as a whole, so that a certain height difference can be formed between the second plate body 1302 and the rotating plate 135 and the outer drill tube 134, which is convenient for the distribution plate 1361 to rotate relative to the rotating plate 135, so that the outer drill tube 134 can be relatively displaced up and down relative to the inner drill tube 133, which is beneficial for the distribution plate 1361 to distribute the hammer force to the outer drill tube 134 and the inner drill tube 133. The distribution plate 1361 is hingedly connected to the rotating plate 135 through the first hinge seat 1351. This structure is relatively simple, can reduce costs, and can also improve the reliability of the hinged connection between the distribution plate 1361 and the rotating plate 135.

[0045] Preferably, Figure 6As shown, the sliding block 1362 extends in a direction perpendicular to the rotating plate 135 and has the same height as the first plate body 1301 . The outer drill tube 134 is provided with a second hinge seat 1341 , and the second hinge seat 1341 is hingedly connected to the sliding block 1362 .

[0046] In the above technical solution, the height of the sliding block 1362 and the first plate body 1301 are equal, so that in the initial state of the sampling device 130, the upper and lower heights of the inner drill barrel 133 and the outer drill barrel 134 can be kept equal, and the action points of the hammer part 1322 and the distribution plate 1361 can be in the center position. The distribution plate 1361 can evenly distribute the hammering force on the inner drill barrel 133 and the outer drill barrel 134, so that the inner drill barrel 133 and the outer drill barrel 134 maintain the same feed amount, which can improve the reliability of sampling.

[0047] Preferably, Figure 2 As shown, the sliding block 1362 is provided with a first sliding groove 1362a, and the two opposite groove walls of the first sliding groove 1362a are provided with a second sliding groove 1362b, the second plate body 1302 is slidably set in the first sliding groove 1362a, and the two ends of the second plate body 1302 in the width direction are provided with sliding protrusions 1303, and the sliding protrusions 1303 are slidably set in the second sliding groove 1362b.

[0048] In the above technical solution, the second plate body 1302 can slide with the sliding block 1362 through the first sliding groove 1362a. On this basis, it can also slide with the sliding protrusion 1303 and the second sliding groove 1362b. This method can make the sliding between the second plate body 1302 and the sliding block 1362 more stable and more reliable, thereby improving the movement reliability between the distribution plate 1361 and the sliding block 1362.

[0049] Preferably, Figure 7 As shown, the outer circumferential wall of the inner drill tube 133 is provided with a limiting groove 1342 in an annular structure, and the inner circumferential wall of the outer drill tube 134 is provided with a limiting protrusion 1333 in an annular structure, and the limiting protrusion 1333 is arranged in the limiting groove 1342.

[0050] In the above technical scheme, the outer drill barrel 134 cooperates with the limiting groove 1342 of the inner drill barrel 133 through the limiting protrusion 1333, which can play a safety role. For example, if one of the hinge structures of the distribution plate 1361 and the rotating plate 135, the sliding block 1362 and the hinge structure of the outer drill barrel 134 fails and causes a break, there will be a safety hazard. The outer drill barrel 134 will be separated from the rotating plate 135, and eventually cause the outer drill barrel 134 and the inner drill barrel 133 to be completely separated. Based on this situation, through the limiting cooperation of the limiting protrusion 1333 and the limiting groove 1342, the force distribution component 136 can be prevented from being separated from the outer drill barrel 134 or the rotating plate 135, resulting in the probability of the outer drill barrel 134 being separated from the inner drill barrel 133, thereby improving the installation reliability between the outer drill barrel 134 and the inner drill barrel 133. Secondly, the limiting protrusion 1333 and the limiting groove 1342 cooperate with each other to prevent the outer drill tube 134 and the inner drill tube 133 from having a large displacement in the up and down directions. For example, the outer drill tube 134 is displaced greatly upward relative to the inner drill tube 133, or the outer drill tube 134 is displaced greatly downward relative to the inner drill tube 133. This can prevent the distribution plate 1361 from contacting and colliding with the rotating plate 135 and causing damage. It can also prevent the contact point between the hammer part 1322 and the distribution plate 1361 from detaching from the distribution plate 1361, causing damage to the sampling device 130, and can improve the stability and reliability of the entire sampling device 130.

[0051] Preferably, Figure 3 and Figure 4 As shown, the outer peripheral wall of the outer drill tube 134 is provided with a plurality of inclined ridges 1343 , and the plurality of inclined ridges 1343 are arranged at intervals along the circumference of the outer drill tube 134 .

[0052] Since the rotating plate 135 is rotatably connected to the inner drill tube 133, when the hammering part 1322 drives the outer drill tube 134 to hammer the road surface downward, the outer drill tube 134 can also rotate under the action of the inclined convex strip 1343, thereby forming a thread line inside the drill hole, increasing the roughness of the inner wall of the drill hole, and when repairing the drill hole in the later stage, the material can have a higher connection force with the inner wall of the drill hole, thereby enhancing the connection reliability between the material and the drill hole, thereby improving the repair effect.

[0053] Preferably, Figure 1 and Figure 4 As shown, the feeding device 120 includes a column 121, a movable seat 122, a threaded rod 123, and an adjusting wheel 124. The column 121 is arranged on the moving device 110, the movable seat 122 is slidably arranged on the column 121 and is connected to the mounting seat 131, the threaded rod 123 is rotatably arranged on the moving device 110 and is threadedly connected to the movable seat 122, and the adjusting wheel 124 is connected to the threaded rod 123.

[0054] In the above technical solution, when it is necessary to feed the sampling device 130 downward, the adjusting wheel 124 can be manually rotated to drive the threaded rod 123 to rotate on the moving device 110. Since the threaded rod 123 and the movable seat 122 are threadedly connected, the threaded rod 123 can drive the movable seat 122 to move downward, thereby driving the sampling device 130 to drill holes downward for sampling. Among them, the column 121 can provide a limit for the movable seat 122 to prevent the movable seat 122 from self-rotating, and can also provide a guide for the movement of the movable seat 122, thereby improving the reliability of the movement of the movable seat 122 in the up and down directions.

[0055] Optionally, the column 121 may be provided in plurality. By providing a plurality of columns 121, the movement reliability of the movable seat 122 can be further improved. Figure 1 As shown, there may be two pillars 121 .

[0056] The working principle of the road surface sampling device 100 of the present invention is described in detail below.

[0057] During use, first control the adjusting wheel 124 of the feeding device 120 to lower the mounting seat 131 so that the drill bit 1331 of the inner drill barrel 133 contacts the road surface, and then the rotating hammer member 132 starts working, so that the rotating power shaft 1321 starts to rotate, and the hammering part 1322 starts to hammer. The rotating power shaft 1321 rotates to drive the inner drill barrel 133 and the drill bit 1331 to rotate to complete the drilling of the road surface, and the hammering part 1322 hammers the distribution plate 1361 to provide a descending force for the inner drill barrel 133 and the outer drill barrel 134.

[0058] During use, when the outer drill tube 134 and the inner drill tube 133 are relatively displaced in the vertical direction, the distribution plate 1361 will slide relative to the sliding block 1362, and the distribution plate 1361 will tilt. For example, when the outer drill tube 134 is higher than the inner drill tube 133, due to the tilt of the distribution plate 1361, the contact position between the hammering part 1322 and the distribution plate 1361 is closer to the outer drill tube 134, so that the contact point between the hammering part 1322 and the distribution plate 1361 moves outward, and the hammering force of the hammering part 1322 can be more distributed to the outer drill tube 134, so that the outer drill tube 134 drops to the horizontal position of the inner drill tube 133, and the feeding amount of the inner and outer drill tubes is consistent. The above method can prevent the outer drill tube 134 and one side of the inner drill tube 133 from being completely immobile when hitting a hard road surface, and the distribution of the hammering force helps to promote the consistency of the feeding amount of the inner and outer tubes, prevent the knife from being stuck, and it is also easier to break the hard road surface.

[0059] During the sampling process of drilling holes, after the outer drill tube 134 is hammered, the inclined convex strips 1343 are inclined, so during the process of the outer drill tube 134 descending, the inclined convex strips 1343 will rotate with the outer drill tube 134, and the inclined convex strips 1343 will carve spiral patterns around the drill hole, which helps to improve the connection force of the material during repair. The limiting convex part 1333 cooperates with the limiting groove 1342 to limit the outer drill tube 134 on the inner drill tube 133.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A road surface sampling device, characterized in that: include: Mobile devices; A feeding device, wherein the feeding device is arranged on the moving device; A sampling device, wherein the sampling device can move in the up and down directions under the driving of the feeding device, and the sampling device comprises: A mounting seat, the mounting seat being arranged on the feeding device; A rotary hammering member, which is arranged on the mounting seat and has a rotary power shaft and a hammering part, and the hammering part can output a hammering action in an up-and-down direction; An inner drill tube, the inner drill tube is connected to the rotating power shaft and has a drill cutter at the bottom; An outer drill barrel, which is disposed outside the inner drill barrel and can rotate relative to the inner drill barrel; A rotating plate, the rotating plate is rotatably arranged on the top of the inner drill tube, the rotating plate is provided with an annular slide groove, the inner drill tube is provided with an annular slide block, and the annular slide block is arranged in the annular slide groove; The force distribution assembly includes a distribution plate and a sliding block. The distribution plate is L-shaped as a whole. The distribution plate includes a first plate body and a second plate body that are vertically connected. The first plate body is perpendicular to the rotating plate. The rotating plate is provided with a first hinge seat, which is hingedly connected to the first plate body. The second plate body is stopped at the hammer part and is slidably connected to the sliding block. The sliding block extends in a direction perpendicular to the rotating plate and is equal to the height of the first plate body. The outer drill tube is provided with a second hinge seat, which is hingedly connected to the sliding block. In the initial state, the action points of the hammer part and the distribution plate are in the center position. When the outer drill tube and the inner drill tube are relatively displaced in the vertical direction, the distribution plate will slide relative to the sliding block and the distribution plate will tilt.

2. The road surface sampling device according to claim 1, characterized in that: The hammering part includes a circular plate and an annular protrusion, wherein the annular protrusion is arranged at the bottom of the circular plate and abuts against the distribution plate, the circular plate is provided with a first through hole, and the rotating power shaft is passed through the first through hole.

3. The road surface sampling device according to claim 2, characterized in that: The rotating plate is circular and is provided with a second through hole. The rotating power shaft passes through the second through hole. A plurality of force distribution components are provided around the circumference of the rotating plate.

4. The road surface sampling device according to claim 1, characterized in that: The sliding block is provided with a first sliding groove, and the two opposite groove walls of the first sliding groove are provided with a second sliding groove. The second plate body is slidably arranged in the first sliding groove, and the two ends of the second plate body in the width direction are provided with sliding protrusions, and the sliding protrusions are slidably arranged in the second sliding groove.

5. The road surface sampling device according to claim 1, characterized in that: The outer peripheral wall of the inner drill tube is provided with a limiting groove in an annular structure, and the inner peripheral wall of the outer drill tube is provided with a limiting convex portion in an annular structure, and the limiting convex portion is arranged in the limiting groove.

6. The road surface sampling device according to claim 1, characterized in that: The outer peripheral wall of the outer drill tube is provided with a plurality of inclined convex strips, and the plurality of inclined convex strips are arranged at intervals along the circumferential direction of the outer drill tube.

7. The road surface sampling device according to claim 1, characterized in that: The feeding device includes a column, a movable seat, a threaded rod, and an adjusting wheel. The column is arranged on the movable device, the movable seat is slidably arranged on the column and is connected to the mounting seat, the threaded rod is rotatably arranged on the movable device and is threadedly connected to the movable seat, and the adjusting wheel is connected to the threaded rod.

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