CN114459808A - Pavement thickness detection device and detection method for highway engineering - Google Patents

Abstract

The utility model relates to a road surface thickness detection device and a detection method for highway engineering, which belongs to the technical field of highway detection, and comprises a frame, wherein a plurality of driving components are arranged on the frame, each driving component is provided with a drilling coring component, the driving components are used for driving the drilling coring components to approach to the ground, and the drilling coring components are used for carrying out core sample collection on an asphalt pavement when being attached to the ground; a straight holding assembly is further arranged between the rack and the drilling coring assembly and is used for enabling the drilling coring assembly to keep vertical collection when core sample collection is carried out; still be provided with the angle adjustment subassembly in the frame, the angle adjustment subassembly is used for adjusting the drive angle that a plurality of drive assembly drive drilling coring subassembly were close to bituminous paving simultaneously. This application has the effect of comparatively trouble problem when improving road surface thickness and detecting.

Description

Pavement thickness detection device and detection method for highway engineering

Technical Field

The application relates to the field of highway detection technology, in particular to a pavement thickness detection device and a detection method for highway engineering.

Background

The asphalt pavement is various types of pavements formed by mixing an asphalt material into a mineral material, paving and rolling, the asphalt binder improves the capability of mineral aggregate to resist damage of driving and natural factors to the pavement, so that the pavement is smooth, dustless, waterproof and durable, therefore, the asphalt pavement is a high-grade pavement which is most widely adopted in road construction, after the asphalt is paved on a highway, the asphalt needs to be paved to a certain thickness to achieve the expected effect, in the paving and compacting processes of the hot-mix asphalt pavement, a drilling coring device needs to be continuously used for carrying out coring sampling on the asphalt pavement for multiple times, and then the length of the taken sample is measured.

In view of the above-mentioned related art, the inventor believes that each measurement requires a worker to perform the collection at different positions of the asphalt pavement many times, which in turn causes a great trouble in measuring the asphalt pavement thickness.

Disclosure of Invention

In order to solve the problem that the detection of the thickness of the road surface is troublesome, the application provides a road surface thickness detection device and a detection method for highway engineering.

The application provides a road surface thickness detection device that highway engineering used adopts following technical scheme:

a road surface thickness detection device for highway engineering comprises a rack, wherein a plurality of driving assemblies are arranged on the rack, each driving assembly is provided with a drilling coring assembly, the driving assemblies are used for driving the drilling coring assemblies to approach to the ground, and the drilling coring assemblies are used for collecting core samples of an asphalt road surface when being attached to the ground; a straight holding assembly is further arranged between the rack and the drilling coring assembly and is used for enabling the drilling coring assembly to keep vertical collection when core sample collection is carried out; still be provided with the angle adjustment subassembly in the frame, the angle adjustment subassembly is used for adjusting the drive angle that a plurality of drive assembly drive drilling coring subassembly were close to bituminous paving simultaneously.

By adopting the technical scheme, after the rack is pushed to the asphalt pavement, the position with higher flatness is found, then the angle of each driving component is simultaneously adjusted through the angle adjusting component, so that the driving components are ready for positioning the drilling coring component, then the plurality of driving components are started, the driving components drive the drilling coring component to abut against the side close to the ground, and after the drilling coring component abuts against the ground, the straight keeping component can enable the drilling coring component to abut against the asphalt pavement in the vertical direction, so that a core sample taken out by the drilling coring component is more accurate; when multiple core samples at different positions are taken by the drilling coring assemblies, the core samples are measured and averaged to obtain final measurement data. Through above-mentioned operation process, can gather a plurality of core appearance through one-time operation to detect out multiunit data, and then reach the effect of comparatively trouble problem when improving road surface thickness and detecting.

Optionally, the rack includes a driving box and a supporting frame, the driving box is mounted on the top of the supporting frame, the driving assembly includes cylinders and hinges, the cylinders are mounted on the top edge of the driving box, and each cylinder is connected to the top edge of the driving box through a hinge; the drilling coring assembly is mounted at the end of a piston rod of the cylinder.

Through adopting above-mentioned technical scheme, because the top of drive case is provided with a plurality of cylinders, then can realize the angle change of cylinder through the hinge, and then can let a plurality of cylinders get the core subassembly with a plurality of drilling after stretching out the piston rod and support the different positions on the bituminous paving simultaneously, not only reach the convenient effect of drive, can adjust the regional scope of taking a sample at any time as required moreover.

Optionally, the drilling coring assembly comprises a frame, a hydraulic cylinder, a rotating motor and a drilling core barrel; the top of the frame body is hinged with the end part of a piston rod of the air cylinder, the hydraulic cylinder is installed in the frame body, the piston rod of the hydraulic cylinder extends vertically and downwards, the rotating motor is installed on the piston rod of the hydraulic cylinder, an output shaft of the rotating motor also extends vertically and downwards, and the core drilling barrel is coaxially installed on the output shaft of the rotating motor and extends out of the frame body; the straight retaining assembly is arranged between the driving box and the frame body, the straight retaining assembly enables the frame body to be always kept at a position where the core barrel is in a vertical state, and one straight retaining assembly corresponds to one frame body.

By adopting the technical scheme, when the frame body is abutted to the ground after the piston rod of the air cylinder extends, the drill core barrel can be always kept in a vertical state due to the arrangement of the direct keeping assembly; then directly start the rotation motor, let rotate the motor and take a core section of thick bamboo to rotate, then restart the pneumatic cylinder, let the pneumatic cylinder rotate the motor and gradually toward the ground side vertical push down for in the core section of thick bamboo bores the pitch road surface slowly, acquire the core appearance, thereby reach and take out the comparatively convenient effect of core appearance.

Optionally, the straight holding assembly comprises a support rod, a transverse sliding rod, a vertical telescopic cylinder and a vertical telescopic rod; the supporting rod is arranged at the top of the driving box, and the transverse sliding rod is horizontally arranged at the top of the supporting rod; the vertical telescopic rod is slidably inserted into the vertical telescopic cylinder, a sliding sleeve is arranged at the top of the vertical telescopic cylinder, and the sliding sleeve is slidably sleeved on the transverse sliding rod; the bottom of the vertical telescopic rod far away from the vertical telescopic cylinder is connected with the top of the frame body.

Through adopting above-mentioned technical scheme, although the framework is articulated state with the piston rod of cylinder, but after the rod end of vertical telescopic link is connected with the top of framework, the framework just can remain throughout and is in vertical decurrent state letting bore a core section of thick bamboo, promptly after the piston rod extension of cylinder with the framework toward being close to ground side butt, sliding sleeve can be along horizontal slide bar toward keeping away from drive box side and move, and vertical telescopic link can be along with the piston rod extension of cylinder and the roll-off in the vertical telescopic link is being followed in the cooperation, make the framework constantly remove towards the ground side, but the state of itself does not change, and then reach the effect that easily lets the framework keep the straight state.

Optionally, the inner wall of the sliding sleeve and the rod wall of the transverse sliding rod are coated with polytetrafluoroethylene layers.

By adopting the technical scheme, the polytetrafluoroethylene is generally called as a non-stick coating or an easy-to-clean material. The material has the characteristics of high temperature resistance and extremely low friction coefficient, so that the material is coated on the inner wall of the sliding sleeve and the rod wall of the transverse sliding rod, and the sliding sleeve can slide on the transverse sliding rod more smoothly.

Optionally, the angle adjustment assembly comprises a vertical moving member, a vertical extrusion member and a lateral push resilient member; the vertical moving parts are installed on the driving box and vertically move on the driving box, and a plurality of vertical extrusion parts are installed on the vertical moving parts; a plurality of transverse pushing rebounding pieces are arranged between the air cylinder and the vertical extrusion piece in the driving box, and one air cylinder corresponds to one transverse pushing rebounding piece and one vertical extrusion piece; the vertical extrusion piece drives the horizontal pushing rebound piece to move horizontally when moving along with the vertical moving piece in the vertical direction, so that the horizontal pushing rebound piece pushes the cylinder to rotate in the vertical direction.

Through adopting above-mentioned technical scheme, just can let the change of a plurality of cylinders realize the angle simultaneously under the helping hand effect of vertical extruded article and horizontal promotion rebound spare through the vertical removal of vertical moving member, and then reach the comparatively convenient effect of the angle of stretching out of adjusting a plurality of cylinders.

Optionally, the vertical moving member includes a vertical moving pile, a moving motor, a threaded rod, and a guide rod; the vertical moving pile is vertically movably arranged in the driving box, the moving motor is installed at the bottom of the vertical moving pile, the threaded rod is coaxially arranged on an output shaft of the moving motor, and a threaded sleeve in threaded fit with the threaded rod is vertically arranged on the inner bottom wall of the driving box; the guide rod is installed on the diapire of vertical removal stake and the length direction of guide rod is unanimous with the length direction of screw rod, be provided with the sliding barrel with guide rod sliding fit on the diapire of drive case.

Through adopting above-mentioned technical scheme, the direct start mobile motor for mobile motor's output shaft drives the threaded rod and rotates, because threaded rod and threaded sleeve screw-thread fit, and slide at the guide bar and insert the guide effect of establishing in the slide cartridge under, vertical removal stake can be along the length direction vertical removal of threaded rod in the drive box, and then reach and let vertical removal stake remove comparatively convenient effect.

Optionally, the vertical extrusion comprises an extrusion block, and the extrusion block is arranged on the side wall of the vertical moving pile; the transverse pushing rebound piece comprises a pushing block, a rebound spring, a butting rod and a butting sliding barrel; the inner side wall of the driving box is horizontally provided with a plurality of sliding rails, one pushing block is arranged on one sliding rail in a sliding mode, an opening through which the pushing block penetrates is formed in the side wall of the driving box, the abutting rod is coaxially arranged at one end, far away from the inside of the driving box, of the pushing block, the abutting sliding cylinder is hinged to one end, far away from the pushing block, of the abutting rod, a pushing sliding rod is arranged on the cylinder body of the air cylinder and in the length direction of the air cylinder, and the abutting sliding cylinder is sleeved on the pushing sliding rod in a sliding mode; the rebound spring is arranged between the pushing block and the inner side wall of the driving box and enables the pushing block to always have the tendency of moving horizontally towards the inside of the driving box;

the one end that the butt joint pole was kept away from to the promotion piece is provided with oblique face of holding, the one end that the vertical removal stake was kept away from to the extrusion piece is provided with crowded face to one side, the face of holding to one side with crowded face to one side sliding fit in vertical direction.

By adopting the technical scheme, when the vertical moving pile vertically moves downwards, the pushing blocks on the vertical moving pile synchronously move downwards along with the vertical moving pile until the inclined extrusion surface on each extrusion block is attached to the inclined abutting surface of the corresponding pushing block, and the inclined extrusion surfaces on the extrusion blocks gradually push the inclined abutting surfaces on the pushing blocks to the outer side away from the driving box along with the continuous downward movement of each extrusion block; at the moment, the whole pushing block drives the abutting rod to horizontally move towards the direction far away from the driving box, the rebound spring is compressed, and the abutting sliding cylinder at the end part of the abutting rod can also slide on the pushing sliding rod of the air cylinder, so that the lower side of the air cylinder hinged on the driving box is pushed to rotate towards the side far away from the driving box; at the moment, the angle of each cylinder is simultaneously adjusted, and after each cylinder drives the drilling coring assembly to rotate towards one side far away from the driving box, the distance of each drilling coring assembly becomes far, and then the cylinder rod stretches out of the cylinder, so that the distance of each drilling coring assembly becomes far, and the range of core sample collection is enlarged; similarly, when the vertical moving pile vertically moves upwards, the inclined extrusion surface on the extrusion block also vertically moves upwards, so that the inclined extrusion surface on the pushing block is not abutted any more; and under the spring action of rebound spring, rebound spring reconversion, and then drive and promote the piece on the slide rail toward the inboard horizontal migration of drive case, at this moment the butt slide cartridge can continue to slide and pull the downside of cylinder toward being close to the rotation of drive case side on promoting the slide bar, and then let all cylinders be close to each other simultaneously, the distance that this moment a plurality of drilling got between the core subassembly just can reduce, reach and adjust a plurality of drilling simultaneously and get the comparatively convenient effect of distance between the core subassembly, also let a plurality of drilling get the core subassembly can improve the drill core sample scope when driving simultaneously.

Optionally, the bottom of the support frame is provided with a self-locking universal wheel.

Through adopting above-mentioned technical scheme, the setting of auto-lock universal wheel can make things convenient for the frame to remove and fix, improve equipment's suitability.

The detection method of the road surface thickness detection device for the highway engineering adopts the following technical scheme, and comprises the following steps:

and (3) point finding step: the frame is pushed to the position to be measured on the asphalt pavement, and the position with higher flatness is found as much as possible, so that the measurement accuracy is improved;

an adjusting step: adjusting the angle of the plurality of drive assemblies simultaneously by the angle adjustment assembly such that each drive assembly is ready to push the drill coring assembly onto the ground;

a step of pasting the ground: starting the plurality of driving assemblies, and enabling the plurality of drilling coring assemblies to be pushed to the ground along with the driving assemblies;

coring: then starting a plurality of drilling coring assemblies to collect core samples of the asphalt pavement;

a measurement step: and measuring the length data of each core sample, and averaging to obtain final measurement data.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the rack is pushed to the asphalt pavement, the position with higher flatness is found, then the angle of each driving component is simultaneously adjusted through the angle adjusting component, so that the driving components are ready for positioning the drilling coring component, then the plurality of driving components are started, the driving components drive the drilling coring component to abut against the side close to the ground, and after the drilling coring component abuts against the ground, the straight maintaining component can enable the drilling coring component to abut against the asphalt pavement in the vertical direction, so that a core sample taken out by the drilling coring component is more accurate; when multiple core samples at different positions are taken by the drilling coring assemblies, the core samples are measured and averaged to obtain final measurement data. Through the operation process, a plurality of core samples can be acquired through one-time operation, so that a plurality of groups of data can be detected, and the effect of improving the problem of trouble in pavement thickness detection is achieved;

2. when the vertical moving pile vertically moves downwards, the pushing blocks on the vertical moving pile synchronously move downwards along with the vertical moving pile until the inclined extrusion surface on each extrusion block is attached to the inclined abutting surface of the corresponding pushing block, and the inclined extrusion surfaces on the extrusion blocks gradually push the inclined abutting surfaces on the pushing blocks to the outer side far away from the driving box along with the continuous downward movement of each extrusion block; at the moment, the whole pushing block drives the abutting rod to horizontally move towards the direction far away from the driving box, the rebound spring is compressed, and the abutting sliding cylinder at the end part of the abutting rod can also slide on the pushing sliding rod of the air cylinder, so that the lower side of the air cylinder hinged on the driving box is pushed to rotate towards the side far away from the driving box; at the moment, the angle of each cylinder is simultaneously adjusted, and after each cylinder drives the drilling coring assembly to rotate towards one side far away from the driving box, the distance of each drilling coring assembly becomes far, and then the cylinder rod stretches out of the cylinder, so that the distance of each drilling coring assembly becomes far, and the range of core sample collection is enlarged; similarly, when the vertical moving pile vertically moves upwards, the inclined extrusion surface on the extrusion block also vertically moves upwards, so that the inclined extrusion surface on the pushing block is not abutted any more; and under the spring action of rebound spring, rebound spring reconversion, and then drive and promote the piece on the slide rail toward the inboard horizontal migration of drive case, at this moment the butt slide cartridge can continue to slide and pull the downside of cylinder toward being close to the rotation of drive case side on promoting the slide bar, and then let all cylinders be close to each other simultaneously, the distance that this moment a plurality of drilling got between the core subassembly just can reduce, reach and adjust a plurality of drilling simultaneously and get the comparatively convenient effect of distance between the core subassembly, also let a plurality of drilling get the core subassembly can improve the drill core sample scope when driving simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a partial sectional view for showing an internal structure of a drive case according to an embodiment of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Description of reference numerals:

1. a frame; 11. a drive box; 111. a threaded sleeve; 112. a sliding cylinder; 113. a sliding rail; 12. a support frame; 121. a self-locking universal wheel; 2. a drive assembly; 21. a cylinder; 211. pushing the sliding rod; 22. a hinge; 3. a drilling coring assembly; 31. a frame body; 32. a hydraulic cylinder; 33. rotating the motor; 34. drilling a core barrel; 4. a straight retention assembly; 41. a support bar; 42. a transverse slide bar; 43. a vertical telescopic cylinder; 431. a sliding sleeve; 44. a vertical telescopic rod; 5. an angle adjustment assembly; 6. a vertical moving member; 61. vertically moving the pile; 62. a moving motor; 63. a threaded rod; 64. a guide bar; 7. a vertical extrusion; 71. extruding the block; 711. obliquely extruding the surface; 8. laterally pushing the resilient member; 81. a pushing block; 811. an inclined butting surface; 82. a rebound spring; 83. a butting rod; 84. abutting against the slide cylinder.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a road surface thickness detection device for highway engineering, and with reference to fig. 1 and 2, the device comprises a frame 1, wherein the frame 1 is composed of a driving box 11 and a support frame 12, in the embodiment, the driving box 11 is cuboid and hollow inside, and the support frame 12 is composed of a plurality of rod bodies and is arranged right below the driving box 11; a plurality of self-locking universal wheels 121 are arranged at the positions, close to the ground, of the support frame 12, so that the whole machine frame 1 can be pushed at will, and the applicability of the whole equipment is improved. All be provided with a drive assembly 2 at four topside departments at drive box 11 top, all install drilling on every drive assembly 2 and get core assembly 3, drive assembly 2's effect then is to get core assembly 3 towards pushing near the ground side with drilling until laminating to subaerial, then drilling get core assembly 3 alright with the sample of drilling core to bituminous paving. In other embodiments, if the driving box 11 is shaped like a triangular prism, one driving assembly 2 is disposed at each of three top edges of the top of the driving box 11; if the drive housing 11 is cylindrical in shape, it may be two, five or another number. Still be provided with the straight subassembly 4 that keeps between frame 1 and drilling coring subassembly 3, the effect that the straight subassembly 4 that keeps lets drilling coring subassembly 3 remain throughout in the position that can vertical drilling ground downwards, like this at drilling coring subassembly 3 laminating subaerial back, can directly drill into ground, the core sample of taking out like this more can embody true road surface thickness. The frame 1 is also provided with an angle adjusting assembly, and the angle adjusting assembly is used for simultaneously adjusting the driving angles of the plurality of driving assemblies 2 when the drilling and coring assemblies 3 drive the asphalt pavement to approach, so that the position distance between every two driving assemblies 2 can be controlled; the greater the distance, the farther the sampling point is selected; the smaller the distance is, the closer the sampling point is selected, and the adaptive adjustment can be carried out according to the field working condition.

Referring to fig. 1 and 2, the driving assembly 2 includes a cylinder 21 and a hinge 22, the cylinder 21 is installed at the top edge of the driving box 11, in this embodiment, there are four cylinders 21, each cylinder 21 is located at the top edge of the top of the driving box 11, and the size and the type of each cylinder 21 are the same. And each cylinder 21 is connected with the driving box 11 through a hinge 22, wherein the hinge 22 is in the form of a hinged seat in the present embodiment, that is, the cylinder 21 can only rotate on a vertical plane, and the piston rod of the cylinder 21 is always inclined or vertically downward, while the drilling coring assembly 3 is installed at the end of the piston rod of the cylinder 21. Directly start cylinder 21 for the piston rod extension of cylinder 21 just can push drilling coring assembly 3 to the ground, and a plurality of cylinders 21 can push a plurality of drilling coring assembly 3 and remove to the ground simultaneously, and the sampling of a plurality of drilling coring assembly 3 is prepared in the one-time operation realization promptly.

With reference to fig. 1 and 2, the drilling and coring assembly 3 includes a frame 31, a hydraulic cylinder 32, a rotary motor 33, and a core barrel 34; the top of the frame 31 is hinged with the end of the piston rod of the cylinder 21, the hydraulic cylinder 32 is installed in the frame 31, the piston rod of the hydraulic cylinder 32 extends vertically and downwards, the rotating motor 33 is installed on the piston rod of the hydraulic cylinder 32, the output shaft of the rotating motor 33 also extends vertically and downwards, and the core drilling barrel 34 is coaxially installed on the output shaft of the rotating motor 33 and extends out of the frame 31; the diameter holding assemblies 4 are installed between the driving box 11 and the frame body 31, and the diameter holding assemblies 4 enable the frame body 31 to be always kept at a position where the core barrel 34 is in a vertical state, and one diameter holding assembly 4 corresponds to one frame body 31.

When the frame 31 is abutted to the ground after the piston rod of the cylinder 21 is extended, the drill core barrel 34 can be always kept in a vertical state due to the arrangement of the straight holding assembly 4; then the rotating motor 33 is directly started, the rotating motor 33 drives the core barrel 34 to rotate, then the hydraulic cylinder 32 is started, the hydraulic cylinder 32 pushes the rotating motor 33 downwards towards the ground side gradually, the core barrel 34 slowly drills into the asphalt pavement, and the core sample is obtained, so that the effect of taking out the core sample conveniently is achieved.

As shown in fig. 1 and 2, the straight holding assembly 4 includes a support rod 41, a transverse sliding rod 42, a vertical telescopic cylinder 43 and a vertical telescopic rod 44; the supporting rod 41 is obliquely and upwards arranged at the position of the driving box 11 close to the cylinder 21, one end of the transverse sliding rod 42 is connected with the supporting rod 41, and the other end horizontally extends to one side far away from the driving box 11; the vertical telescopic cylinder 43 is vertically arranged, a sliding sleeve 431 is arranged at the top of the vertical telescopic cylinder 43, and the sliding sleeve 431 is slidably sleeved on the transverse sliding rod 42, namely, the vertical telescopic cylinder 43 can horizontally move along the length direction of the transverse sliding rod 42 through the sliding sleeve 431; the vertical telescopic cylinder 43 is hollow and provided with an opening at the lower end, and the vertical telescopic rod 44 is slidably inserted into the vertical telescopic cylinder 43; an anti-falling flange is arranged on an inner ring of an opening at the lower end of the vertical telescopic cylinder 43, an anti-falling block is arranged at one end of the vertical telescopic rod 44, which is positioned in the vertical telescopic cylinder 43, and the anti-falling block is abutted against the anti-falling flange in the vertical direction, so that the vertical telescopic rod 44 can be prevented from being completely separated from the vertical telescopic cylinder 43; and the bottom of the vertical telescopic rod 44 away from the vertical telescopic cylinder 43 is connected with the top of the frame body 31.

Although the frame 31 is hinged to the piston rod of the cylinder 21, after the rod end of the vertical telescopic rod 44 is connected to the top of the frame 31, the frame 31 can always keep the drill core barrel 34 in a vertically downward state, that is, after the piston rod of the cylinder 21 extends and the frame 31 is abutted to the side close to the ground, the sliding sleeve 431 will move along the horizontal sliding rod 42 to the side away from the driving box 11, and the vertical telescopic rod 44 will slide out from the vertical telescopic cylinder 43 along with the extension of the piston rod of the cylinder 21, so that although the frame 31 continuously moves to the ground side, the state of itself is not changed, and the effect of easily keeping the frame 31 in a straight state is achieved. It should be noted that the inner wall of the sliding sleeve 431 and the rod wall of the transverse sliding rod 42 are coated with teflon layers, which can reduce the friction between two objects sliding relatively, so that the sliding sleeve 431 can slide smoothly on the transverse sliding rod 42.

With reference to fig. 2 and 3, the angular adjustment assembly 5 comprises a vertical moving member 6, a vertical pressing member 7 and a lateral push-resilient member 8; the vertical moving members 6 are mounted on the driving box 11 and vertically move on the driving box 11, and a plurality of vertical extrusion members 7 are mounted on the vertical moving members 6; a plurality of transverse pushing resilient members 8 are arranged in the driving box 11 between the air cylinders 21 and the vertical extrusion members 7, and one air cylinder 21 corresponds to one transverse pushing resilient member 8 and one vertical extrusion member 7; the vertical pressing member 7 drives the lateral push resilient member 8 to move horizontally when moving in the vertical direction with the vertical moving member 6, thereby causing the lateral push resilient member 8 to push the cylinder 21 to rotate in the vertical direction.

Specifically, in conjunction with fig. 2 and 3, the vertical moving member 6 includes a vertical moving pile 61, a moving motor 62, a threaded rod 63, and a guide rod 64; the vertical moving pile 61 is rectangular, a through hole is formed in the top of the driving box 11, and a part of the vertical moving pile 61 penetrates through the through hole and extends out of the driving box 11; the movable motor 62 is installed on the lower end wall of the vertical movable pile 61, the output shaft of the movable motor 62 vertically extends downwards, the threaded rod 63 is coaxially arranged on the output shaft of the movable motor 62, the threaded sleeve 111 in threaded fit with the threaded rod 63 is vertically arranged on the inner bottom wall of the driving box 11, the interior of the threaded sleeve 111 is communicated with the outside, the threaded rod 63 can directly extend out of the driving box 11 during the rotary movement of the threaded sleeve 111, and the applicability is improved. Similarly, the guide rod 64 is also attached to the bottom wall of the vertically movable pile 61, the longitudinal direction of the guide rod 64 coincides with the longitudinal direction of the threaded rod 63, a slide cylinder 112 slidably fitted to the guide rod 64 is provided on the bottom wall of the drive box 11, the longitudinal direction of the slide cylinder 112 coincides with the longitudinal direction of the threaded sleeve 111, and the inside of the slide cylinder 112 also communicates with the outside.

Referring to fig. 2 and 3, the vertical pressing member 7 includes a pressing block 71, the pressing block 71 is disposed on a side wall of the vertically moving pile 61, and the laterally pushing resilient member 8 includes a pushing block 81, a resilient spring 82, an abutment lever 83, and an abutment slide cylinder 84; a plurality of sliding rails 113 are horizontally arranged on the inner side wall of the driving box 11, one pushing block 81 is arranged on one sliding rail 113 in a sliding manner, an opening for the pushing block 81 to penetrate out is formed in the side wall of the driving box 11, the sliding rail 113 is in the shape of a linear groove, the upper half part of the pushing block 81 is exposed outside the sliding rail 113, and the lower half part of the pushing block 81 is positioned in the sliding rail 113; the butt-joint rod 83 is coaxially arranged at one end of the pushing block 81 far away from the interior of the driving box 11, the butt-joint sliding cylinder 84 is hinged at one end of the butt-joint rod 83 far away from the pushing block 81, a pushing sliding rod 211 is arranged on the cylinder body of the air cylinder 21 and along the length direction of the air cylinder 21, and the butt-joint sliding cylinder 84 is slidably sleeved on the pushing sliding rod 211. A vertical plate is arranged on the top wall of the pushing block 81, one end of a rebound spring 82 is connected to the inner side wall of the driving box 11, the other end of the rebound spring extends horizontally and is connected to the surface of the vertical plate, and the rebound spring 82 enables the pushing block 81 to always have a trend of moving horizontally in the driving box 11. An inclined abutting surface 811 is arranged at one end of the pushing block 81 far away from the abutting rod 83, an inclined extruding surface 711 is arranged at one end of the extruding block 71 far away from the vertical moving pile 61, and the inclined abutting surface 811 and the inclined extruding surface 711 are in sliding fit in the vertical direction.

When the vertical moving pile 61 moves vertically downwards, the pushing block 81 on the vertical moving pile 61 also moves downwards synchronously with the vertical moving pile 61 until the inclined extrusion surface 711 on each extrusion block 71 is attached to the inclined abutment surface 811 of the corresponding pushing block 81, and as each extrusion block 71 continues to move downwards, the inclined extrusion surface 711 on the extrusion block 71 pushes the inclined abutment surface 811 on the pushing block 81 gradually to the outside far away from the driving box 11; at this time, the whole pushing block 81 drives the abutting rod 83 to horizontally move in the direction away from the driving box 11, the rebound spring 82 is compressed, and the abutting sliding cylinder 84 at the end of the abutting rod 83 slides on the pushing sliding rod 211 of the air cylinder 21, so as to push the lower side of the air cylinder 21 hinged on the driving box 11 to rotate towards the side away from the driving box 11; at the moment, the angle of each cylinder 21 is simultaneously adjusted, and after each cylinder 21 drives the drilling coring assembly 3 to rotate towards one side far away from the driving box 11, the distance of each drilling coring assembly 3 becomes far, and then the piston rod of the cylinder 21 extends out, so that each drilling coring assembly 3 can be further far away, and the core sample collection range is enlarged; similarly, when the vertically moving pile 61 moves vertically upward, the inclined squeezing surface 711 on the squeezing block 71 also moves vertically upward, so as not to abut against the inclined abutting surface 811 on the pushing block 81; and under rebound spring 82's elastic force effect, rebound spring 82 reconversion, and then drive and promote piece 81 toward the inboard horizontal migration of drive case 11 on sliding rail 113, at this moment butt slide cylinder 84 can continue to slide and pull the downside of cylinder 21 toward being close to drive case 11 side rotation on promoting slide bar 211, and then let all cylinders 21 be close to each other simultaneously, the distance that this moment a plurality of drilling coring subassembly 3 between can reduce, reach and adjust the comparatively convenient effect of distance between a plurality of drilling coring subassembly 3 simultaneously, also let a plurality of drilling coring subassembly 3 can improve the drill core sample scope when driving simultaneously.

The embodiment of the application also discloses a detection method of the road surface thickness detection device for highway engineering, which comprises the following steps:

and (3) point finding step: the frame 1 is pushed to the position to be measured on the asphalt pavement, the position with higher flatness is found as much as possible, and the measurement accuracy is improved;

an adjusting step: the angles of the plurality of driving assemblies 2 are adjusted simultaneously through the angle adjusting assembly 5, so that each driving assembly 2 is ready for pushing the drilling coring assembly 3 to the ground;

a step of pasting the ground: starting the plurality of driving assemblies 2 to drive the plurality of drilling coring assemblies 3 to the ground along with the driving assemblies 2;

coring: then starting a plurality of drilling coring assemblies 3 to collect core samples of the asphalt pavement;

a measurement step: and measuring the length data of each core sample, and averaging to obtain final measurement data.

The implementation principle of the road surface thickness detection device and the detection method for the highway engineering provided by the embodiment of the application is as follows: the frame 1 is pushed to a position to be measured on an asphalt pavement, a position with higher flatness is found as much as possible, when the detection range needs to be widened, the moving motor 62 is directly started, the vertical moving pile 61 is vertically moved downwards, the piston rods of the cylinders 21 are inclined towards the direction away from each other, and then the cylinders 21 are started again to bring the frame body 31 to the pavement away from the driving box 11; similarly, when the detection range needs to be narrowed, the vertically moving pile 61 is vertically moved upwards, the piston rod of each cylinder 21 is inclined towards the direction of approaching each other, and the frame 31 can be brought to the road surface close to the driving box 11 by restarting the cylinders 21. Finally, the core sample collection is carried out on the drilling coring assembly 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a road surface thickness detection device that highway engineering used which characterized in that: the device comprises a rack (1), wherein a plurality of driving assemblies (2) are arranged on the rack (1), a drilling coring assembly (3) is arranged on each driving assembly (2), the driving assemblies (2) are used for driving the drilling coring assemblies (3) to approach to the ground, and the drilling coring assemblies (3) are used for collecting core samples of an asphalt pavement when being attached to the ground; a straight holding assembly (4) is further arranged between the rack (1) and the drilling coring assembly (3), and the straight holding assembly (4) is used for enabling the drilling coring assembly (3) to keep vertical collection during core sample collection; still be provided with angle adjustment subassembly (5) on frame (1), angle adjustment subassembly (5) are used for adjusting the drive angle when a plurality of drive assembly (2) drive drilling coring subassembly (3) are close to bituminous paving simultaneously.

2. The road surface thickness detection device for road engineering according to claim 1, characterized in that: the rack (1) comprises a driving box (11) and a supporting frame (12), the driving box (11) is installed at the top of the supporting frame (12), the driving assembly (2) comprises a cylinder (21) and a hinge (22), the cylinder (21) is installed at the top edge of the driving box (11), and each cylinder (21) is connected with the top edge of the driving box (11) through one hinge (22); the drilling coring assembly (3) is installed at the end part of a piston rod of the air cylinder (21).

3. The road surface thickness detection device for road engineering according to claim 2, characterized in that: the drilling and coring assembly (3) comprises a frame body (31), a hydraulic cylinder (32), a rotating motor (33) and a drilling core barrel (34); the top of the frame body (31) is hinged with the end part of a piston rod of the air cylinder (21), the hydraulic cylinder (32) is installed in the frame body (31), the piston rod of the hydraulic cylinder (32) vertically extends downwards, the rotating motor (33) is installed on the piston rod of the hydraulic cylinder (32), the output shaft of the rotating motor (33) also vertically extends downwards, and the drill core cylinder (34) is coaxially installed on the output shaft of the rotating motor (33) and extends out of the frame body (31); the straight retaining assemblies (4) are arranged between the driving box (11) and the frame body (31), the frame body (31) is always kept at a position where the drill core barrel (34) is in a vertical state by the straight retaining assemblies (4), and one straight retaining assembly (4) corresponds to one frame body (31).

4. The road surface thickness detection device for road engineering according to claim 3, characterized in that: the straight retaining assembly (4) comprises a supporting rod (41), a transverse sliding rod (42), a vertical telescopic cylinder (43) and a vertical telescopic rod (44); the supporting rod (41) is arranged at the top of the driving box (11), and the transverse sliding rod (42) is horizontally arranged at the top of the supporting rod (41); the vertical telescopic rod (44) is slidably inserted into the vertical telescopic cylinder (43), a sliding sleeve (431) is arranged at the top of the vertical telescopic cylinder (43), and the sliding sleeve (431) is slidably sleeved on the transverse sliding rod (42); the bottom of the vertical telescopic rod (44) far away from the vertical telescopic cylinder (43) is connected with the top of the frame body (31).

5. The road surface thickness detection device for road engineering according to claim 4, characterized in that: the inner wall of the sliding sleeve (431) and the rod wall of the transverse sliding rod (42) are coated with polytetrafluoroethylene layers.

6. The road surface thickness detection device for road engineering according to claim 2, characterized in that: the angle adjusting assembly (5) comprises a vertical moving piece (6), a vertical extrusion piece (7) and a transverse pushing rebound piece (8); the vertical moving parts (6) are installed on the driving box (11) and vertically move on the driving box (11), and a plurality of vertical extrusion parts (7) are installed on the vertical moving parts (6); a plurality of transverse pushing resilient members (8) are arranged in the driving box (11) and positioned between the air cylinders (21) and the vertical extrusion members (7), and one air cylinder (21) corresponds to one transverse pushing resilient member (8) and one vertical extrusion member (7); the vertical extrusion piece (7) drives the transverse pushing resilient piece (8) to horizontally move when moving along with the vertical moving piece (6) in the vertical direction, so that the transverse pushing resilient piece (8) pushes the air cylinder (21) to rotate in the vertical direction.

7. The road surface thickness detection device for road engineering according to claim 6, characterized in that: the vertical moving piece (6) comprises a vertical moving pile (61), a moving motor (62), a threaded rod (63) and a guide rod (64); the vertical moving pile (61) is vertically movably arranged in the driving box (11), the moving motor (62) is installed at the bottom of the vertical moving pile (61), the threaded rod (63) is coaxially arranged on an output shaft of the moving motor (62), and a threaded sleeve (111) in threaded fit with the threaded rod (63) is vertically arranged on the inner bottom wall of the driving box (11); the guide rod (64) is installed on the bottom wall of the vertical moving pile (61), the length direction of the guide rod (64) is consistent with that of the threaded rod (63), and a sliding cylinder (112) in sliding fit with the guide rod (64) is arranged on the bottom wall of the driving box (11).

8. The road surface thickness detection device for road engineering according to claim 7, characterized in that: the vertical extrusion member (7) comprises an extrusion block (71), and the extrusion block (71) is arranged on the side wall of the vertical moving pile (61); the transverse pushing resilient piece (8) comprises a pushing block (81), a resilient spring (82), an abutting rod (83) and an abutting sliding barrel (84); the inner side wall of the driving box (11) is horizontally provided with a plurality of sliding rails (113), one pushing block (81) is arranged on one sliding rail (113) in a sliding mode, an opening for the pushing block (81) to penetrate out is formed in the side wall of the driving box (11), the abutting rod (83) is coaxially arranged at one end, far away from the inside of the driving box (11), of the pushing block (81), the abutting sliding cylinder (84) is hinged to one end, far away from the pushing block (81), of the abutting rod (83), a pushing sliding rod (211) is arranged on the cylinder body of the air cylinder (21) and along the length direction of the air cylinder (21), and the abutting sliding cylinder (84) is sleeved on the pushing sliding rod (211) in a sliding mode; the rebound spring (82) is arranged between the pushing block (81) and the inner side wall of the driving box (11) and enables the pushing block (81) to always have the tendency of moving horizontally into the driving box (11);

the pushing block (81) is provided with an oblique abutting surface (811) at one end far away from the abutting rod (83), the extrusion block (71) is provided with an oblique extrusion surface (711) at one end far away from the vertical moving pile (61), and the oblique abutting surface (811) is in sliding fit with the oblique extrusion surface (711) in the vertical direction.

9. The road surface thickness detection device for road engineering according to claim 2, characterized in that: the bottom of the support frame (12) is provided with a self-locking universal wheel (121).

10. A detection method based on the road surface thickness detection device for road engineering of any one of claims 1 to 9, characterized in that: the method comprises the following steps:

and (3) point finding step: the frame (1) is pushed to the position to be measured on the asphalt pavement, and the position with higher flatness is found as much as possible, so that the measurement accuracy is improved;

an adjusting step: adjusting the angle of a plurality of driving assemblies (2) simultaneously by an angle adjusting assembly (5) so that each driving assembly (2) is ready to push the drilling coring assembly (3) to the ground;

a step of pasting the ground: starting the plurality of driving assemblies (2) to drive the plurality of drilling coring assemblies (3) to the ground along with the driving assemblies (2);

coring: then starting a plurality of drilling coring assemblies (3) to collect core samples of the asphalt pavement;

and (3) measuring: and measuring the length data of each core sample, and averaging to obtain final measurement data.

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