Nondestructive testing device for construction quality of asphalt surface layer

Abstract

The invention relates to the field of construction quality detection equipment, and provides an asphalt surface layer construction quality nondestructive detection device which comprises a traction assembly, the rear side of the traction assembly is connected with a detection mechanism through a universal shaft piece, the detection mechanism comprises a movable bottom frame, and the top of the movable bottom frame is connected with a split type frame. And an adjusting mechanism is arranged on the split type frame. Compared with the prior art, the asphalt pavement flatness detection device has the following beneficial effects that through the design of the detection mechanism, the flatness of an asphalt pavement can be detected through a laser ranging principle, meanwhile, the structure can be adjusted according to the width of the asphalt pavement, and different numbers of movable parts are additionally arranged, so that flatness detection is carried out through a plurality of transverse equidistant laser detection heads; the working efficiency is improved, the working time is shortened, meanwhile, aiming at the condition of bumpy road surfaces, a reset assembly is further arranged to help the movable part to reset quickly, various complex conditions are further coped, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention is a non-destructive testing device for the construction quality of an asphalt surface layer, belonging to the field of construction quality testing equipment. Background Art

[0002] After the construction of the asphalt pavement layer, in order to ensure that the construction quality can pass the engineering quality acceptance, it is necessary to perform non-destructive testing on the asphalt surface layer to evaluate the flatness of the asphalt surface layer; the existing flatness detection equipment has relatively single functions and fewer evaluation indicators that can be used to detect flatness, resulting in inaccurate detection results. Moreover, the existing asphalt surface layer detection device cannot be adjusted according to the width of the asphalt surface layer, so that the detection device cannot be adaptively adjusted, reducing the practicality of the device. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a non-destructive testing device for the construction quality of an asphalt surface layer.

[0004] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0005] A non-destructive testing device for the construction quality of an asphalt surface layer includes a traction assembly. The rear side of the traction assembly is connected to a detection mechanism through a universal shaft member. The detection mechanism includes a moving chassis. The top of the moving chassis is connected with a split frame. An adjustment mechanism is provided on the split frame. An active member is rotatably connected inside the split frame. A central laser detection head is provided in the middle of the active member. One side laser detection head is respectively provided on both sides of the central laser detection head. A connection assembly is provided on the side of the active member. The connection assembly includes two groups of positioning blocks fixed on one side of the active member. A U-shaped clamping plate is provided between each group of positioning blocks. A rotating sleeve is penetrated through the middle of the U-shaped clamping plate.

[0006] Furthermore, the connecting assembly also includes two groups of connecting grooves on one side of the movable part, a positioning groove is respectively provided on both sides of the connecting groove, the positioning groove is adapted to the positioning block, a rotating shaft is rotatably connected to one side of the middle part of the connecting groove, a rotating plate is fixed to the middle part of the rotating shaft, the end of the rotating shaft extends to the opening of the connecting groove and is sleeved in the rotating sleeve, the U-shaped clamping plate is adapted to the rotating plate, a plug-in groove matching the rotating sleeve is provided on the rotating plate, a fixing plate matching the rotating plate is fixed on one side of the connecting groove, an adjusting groove and a accommodating groove connected to the connecting groove are respectively provided in the inner wall of the movable part, a sliding seat is slidably connected in the adjusting groove, and one side of the sliding seat is connected to the The cam is provided with a plurality of limit rods on the other side of the sliding seat, and the end of the limit rod passes through the connecting groove and extends to the positioning groove and is immersed in the positioning block. A sliding block is slidably connected in the accommodating groove, and an abutment plate is fixed between the two sliding blocks, and the end of the abutment plate passes through the connecting groove, and the outer surface of the side edge of the abutment plate away from the sliding block is provided with a trapezoidal inclined plate, and the trapezoidal inclined plate passes through the adjusting groove through the transverse opening provided in the connecting groove and is squeezed together with the outer surface of the sliding seat, and a toggle block is provided on the top of the abutment plate, and a limit ring is connected to the two sides of the top opening of the connecting groove by flexible belts, and the limit ring is adapted to the toggle block.

[0007] Furthermore, the split frame includes two symmetrically arranged fixed frames, two symmetrically arranged movable frames and a split movable support plate, the two fixed frames are respectively fixed on both sides of the top of the movable base frame, an inner cavity is opened inside the fixed frame, and both sides of the inner cavity are respectively opened with inlets and outlets penetrating to the outer surface of the side edge of the fixed frame, a plurality of linkage gears are rotatably connected to the inner middle part of the inner cavity, and a rack plate is respectively engaged on both sides of the linkage gear, and the rack plate is slidably connected in the inner cavity, and the end of the rack plate passes through the inlet and outlet to the outside of the fixed frame and is connected and fixed to the movable frame.

[0008] Further, the split-type movable pallet includes two connecting pieces and two movable frames. A first shaft rod is provided in the middle of the outer surface of the movable frame. The first shaft rod is rotatably connected in a first shaft sleeve, and the first shaft sleeve is fixed on the inner wall of the movable frame. A first angle sensor matched with the first shaft rod is provided on the movable frame. The two connecting pieces are respectively located at both ends of the opposite sides of the two movable frames. A second shaft sleeve is provided in the middle of one side of the connecting piece. A second shaft rod is rotatably connected in the second shaft sleeve, and the end of the second shaft rod is connected to the movable part. A second angle sensor matched with the second shaft rod is provided on the second shaft sleeve. A guiding connecting plate is respectively provided at the ends of the opposite sides of the two movable frames. A guiding groove matched with the guiding connecting plate is formed on the other side of the movable frame. Sliding grooves matched with the guiding connecting plate are respectively formed on the upper and lower sides of the connecting piece.

[0009] Further, a reset assembly matched with the movable part is provided in the middle of the split-type frame. The reset assembly includes an inclined surface formed at the corner of the movable part and a reset motor provided in the middle of the movable frame. The bottom output end of the reset motor is connected with a motor shaft, and the bottom end of the motor shaft penetrates below the movable frame and is connected with a rotating disc. The rotating disc is rotatably connected to the bottom of the movable frame, and a reset rod matched with the inclined surface is fixed on the side of the rotating disc.

[0010] Further, the traction assembly includes a traction vehicle body. Legs are provided on the side of the traction vehicle body, driving wheels are installed at the bottoms of the legs, and a driving motor is connected between two adjacent legs.

[0011] Further, the universal shaft part includes a spherical shaft rod and a spherical shaft connecting seat. The spherical shaft connecting seat and the spherical shaft rod are movably connected, and the ends of the spherical shaft rod and the spherical shaft connecting seat are respectively movably connected to the traction vehicle body and the split-type frame.

[0012] Further, an electric control cavity is provided in the traction vehicle body. A wireless transmission module and a microcontroller are provided inside the electric control cavity. The wireless transmission module is electrically connected to the microcontroller, and the wireless transmission module is electrically connected to the driving motor, the first angle sensor, the second angle sensor, the central laser detection head, the side laser detection head and the reset motor.

[0013] Furthermore, the adjusting mechanism includes a cavity opened inside the connecting piece, a turntable is rotatably connected to the middle part of the cavity, an axis rod in the middle part of the turntable passes through the cavity and is fixedly connected to the toggle piece, a guide block is vertically slidably connected to the upper and lower sides of the cavity respectively, a guide slide groove matching the guide block is opened on the side wall of the cavity, a damping spring is connected between the inner wall of the guide slide groove and the guide block, a circular frame matching the toggle piece is respectively provided on one side of the bottom of the sliding plate, a locking sleeve is respectively provided on the opposite side of the two sliding plates, the locking sleeve passes through the slide groove and is clamped in the locking groove on the outer surface of the guide connecting plate, an adsorption block is provided inside the locking groove, and an adsorption groove matching the adsorption block is provided in the middle of the outer surface of the locking sleeve.

[0014] Furthermore, the adjustment mechanism includes two fixing members and a limiting member, the two fixing members are connected and fixed by the limiting member, the fixing member includes a fixed bottom block and a fixed top block, a support plate is fixed to the bottom of the fixed bottom block, the bottom end of the support plate passes through the inner cavity through an adjustment opening provided at the top of the movable frame and is connected and fixed to the rack plate, the fixed bottom block and the fixed top block are connected and fixed by a fixing rod, an activity space is formed between the fixed bottom block and the fixed top block, a movable ring is rotatably connected in the activity space, an inlet and an outlet are symmetrically provided on both sides of the movable ring, and one end of the movable ring A movable groove is provided in the side inner wall, and a movable notch is provided on one side of the movable groove and penetrates into the outer surface of the movable ring. A clamping block is slidably connected in the movable groove, and the outer surface of the clamping block is provided with a sliding block penetrating into the movable notch. The limit member includes a limit seat and a limit frame, and the limit frame is fixed to one side of the limit seat, and the limit frame is passed through the inlet and the outlet between the two groups of the fixing members. A plurality of through holes are provided on the limit frame, and the clamping block passes through the through holes to clamp and fix the limit frame. A baffle is provided on one side of the clamping block, and a return spring is connected between the outer surface of the clamping block and the inner wall of the movable groove.

[0015] Beneficial effects of the present invention:

[0016] Through the design of the detection mechanism, while detecting the flatness of the asphalt pavement through the principle of laser ranging, the structure can be adjusted according to the width of the asphalt pavement, and different numbers of movable parts can be added to perform flatness detection through multiple equidistant laser detection heads in the horizontal direction, thereby improving work efficiency and reducing working time. At the same time, in case of bumpy roads, a reset component is also equipped to help the movable parts reset quickly, further coping with various complex situations and improving work efficiency.

[0017] Through the design of the split frame, the adjustment mechanism can be activated to release the connection between the components of the split frame. Subsequently, the moving frame is pulled outward. While the moving frame moves, it will drive the moving frame on the other side to move outward synchronously through the drive of the linkage gear. When the mobile frame moves, it will also drive the active frame to move synchronously, thereby adjusting the size of the active space of the active parts.

[0018] Through the design of the adjustment mechanism, when it is necessary to adjust the extension range of the split frame, the slider is pressed to drive the card block to slide in the movable groove, so that the card block is pulled out from the through hole on the limit frame, and then the limit frame on the limit member is pulled out from the two fixing members, and the movable frame can be pulled to move. After adjusting the moving distance, the limit frame on the limit member is inserted into the two fixing members, and then the card block is used to realize card connection and fixation, thereby limiting the adjusted split frame.

[0019] Through the design of the adjustment mechanism, when it is necessary to adjust the extension range of the split frame, the turntable can be turned to drive the toggle member to rotate. When the toggle member rotates, it will squeeze the circular frame through the wing plates on both sides, thereby driving the sliding plates on both sides to move vertically at the same time. The movement of the sliding plate will push the locking sleeve out of the locking groove at the bottom of the guide connecting plate. At this time, the mobile frame can be pulled to adjust the position.

[0020] Through the design of the connecting component, after the split frame is adjusted, when assembling the remaining movable parts, lift the movable part to be added so that the positioning block on its side is vertically inserted into the positioning groove of the current movable part. Synchronously, the U-shaped clamp is also vertically inserted into the rotating plate in the connecting groove in a vertical state. Subsequently, the connection and fixation can be completed with just one pulling action.

[0021] Through the design of the reset component, when a large-scale bump occurs, the movable pallet and the movable part will rotate frequently over a large range. At this time, the microcontroller will stop the detection work of the central laser detection head and the side laser detection head, and then start the reset component to reset the movable pallet and the movable part, that is, the start signal is transmitted to the reset motor through the wireless transmission module, and the reset motor drives the rotating disk and the reset rod to rotate through the motor shaft. The rotation of the reset rod will squeeze and push the movable pallet or movable part in an inclined state through the side wall. The inclined surface of the side wall of the movable pallet or movable part will help the reset rod to squeeze and push, thereby realizing the rapid reset of the movable pallet or movable part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is the overall structural schematic diagram of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0024] Figure 2 This is the schematic diagram of the split-frame structure of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0025] Figure 3 This is the schematic diagram of the partial structure of the split-frame of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0026] Figure 4 This is the schematic diagram of the fixing part structure of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0027] Figure 5 This is the schematic diagram of the partial structure of the fixing part of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0028] Figure 6 This is the schematic diagram of the partial structure of the fixing part of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0029] Figure 7 This is the schematic diagram of the partial structure of the fixing part of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 3 ;

[0030] Figure 8 This is the schematic diagram of the limiting part structure of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0031] Figure 9 This is the schematic diagram of the limiting part structure of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0032] Figure 10 This is the schematic diagram of the partial structure of the split-frame of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0033] Figure 11 This is the schematic diagram of the adjustment mechanism structure in Embodiment 2 of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0034] Figure 12 This is the schematic diagram of the partial structure of the adjustment mechanism in Embodiment 2 of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0035] Figure 13Schematic cross-sectional structure diagram of the guiding connecting plate of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0036] Figure 14 Schematic structure diagram of the connecting member of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0037] Figure 15 Schematic diagram of the partial structure of the adjusting mechanism in the second embodiment of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0038] Figure 16 Schematic diagram of the partial structure of the adjusting mechanism in the second embodiment of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 3 ;

[0039] Figure 17 Schematic diagram of the partial structure of the adjusting mechanism in the second embodiment of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 4 ;

[0040] Figure 18 Schematic structure diagram of the connecting component of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0041] Figure 19 Schematic diagram of the partial structure of the connecting component of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0042] Figure 20 Schematic diagram of the partial structure of the connecting component of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0043] Figure 21 Schematic diagram of the partial structure of the connecting component of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 3 ;

[0044] Figure 22 Schematic connection structure diagram of the rotating sleeve and the U-shaped clamping plate of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 1 ;

[0045] Figure 23 Schematic connection structure diagram of the rotating sleeve and the U-shaped clamping plate of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention Figure 2 ;

[0046] Figure 24 Schematic structure diagram of the connection structure between the rotating shaft and the rotating plate of a non-destructive testing device for the construction quality of an asphalt surface layer according to the present invention;

[0047] Figure 25A schematic diagram of the local structure of the connecting components of a nondestructive testing device for asphalt surface construction quality according to the present invention Figure 3 ;

[0048] Figure 26 A schematic diagram of the local structure of the connecting components of a nondestructive testing device for asphalt surface construction quality according to the present invention Figure 4 ;

[0049] Figure 27 The present invention is a schematic diagram of the structure of a reset component of a nondestructive testing device for asphalt surface construction quality.

[0050] In the figure, 1, tractor body; 2, outrigger; 3, driving motor; 4, driving wheel; 5, mobile chassis; 6, fixed frame; 7, mobile frame; 8, inner cavity; 9, linkage gear; 10, rack plate; 11, support plate; 12, fixing member; 13, limiting member; 14, fixed bottom block; 15, fixed top block; 16, movable ring; 17, inlet; 18, outlet; 19, fixing rod; 20, movable groove; 21, movable notch; 22, block; 23, shielding plate; 24, reset spring 1; 25, slider; 26, limiting seat; 27, limiting frame; 28, perforation; 29, first shaft sleeve; 30, first shaft rod; 31, first angle sensor; 32, movable support plate; 33, connecting member; 34, movable frame; 35, guide connecting plate; 36, guide groove; 37, locking groove; 38, adsorption block; 39, slide slot; 40, turntable; 41, toggle member; 42, sliding plate; 43, guide block; 44, damping spring; 45, locking sleeve; 46, adsorption slot; 47, circular frame; 48, second shaft sleeve; 49, second shaft rod; 50, second angle sensor; 51, movable member; 52, connecting slot; 53, center laser detection head; 54, side laser detection head; 55, inclined plane; 56, reset rod; 57, positioning slot; 58, sliding seat; 59, limit rod; 60, fixed plate; 61, rotating shaft; 62, rotating plate; 63, plug-in slot; 64, abutment plate; 65, sliding block; 66, trapezoidal inclined plate; 67, toggle block; 68, limit collar; 69, positioning block; 70, rotating sleeve; 71, U-shaped clamp; 72, reset spring 2; 73, reset motor; 74, motor shaft; 75, rotating disk. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] For example, see Figures 1 - 3 ,Figures 18 - 27 , the present invention provides a technical solution for a non-destructive detection device for the construction quality of an asphalt surface layer, including a traction assembly. The rear side of the traction assembly is connected to a detection mechanism through a universal shaft member. The detection mechanism includes a moving chassis 5. A split frame is connected to the top of the moving chassis 5. An adjustment mechanism is provided on the split frame. An active member 51 is rotatably connected inside the split frame. A central laser detection head 53 is provided in the middle of the active member 51. A side laser detection head 54 is provided on each side of the central laser detection head 53. A connection assembly is provided on the side of the active member 51. The traction assembly includes a traction vehicle body 1. A support leg 2 is provided on the side of the traction vehicle body 1. A driving wheel 4 is installed at the bottom of the support leg 2. A driving motor 3 is connected between two adjacent support legs 2. The universal shaft member includes a spherical shaft rod and a spherical shaft connection seat. The spherical shaft connection seat and the spherical shaft rod are movably connected. The end parts of both the spherical shaft rod and the spherical shaft connection seat are movably connected to the traction vehicle body 1 and the split frame respectively. An electric control cavity is provided inside the traction vehicle body 1. A wireless transmission module and a microcontroller are provided inside the electric control cavity. The wireless transmission module is electrically connected to the microcontroller. The wireless transmission module is electrically connected to the driving motor 3, the first angle sensor 31, the second angle sensor 50, the central laser detection head 53, the side laser detection head 54, and the reset motor 73. Through the design of the detection mechanism, while detecting the flatness of the asphalt road surface by the laser ranging principle, the structure of the asphalt road surface can also be adjusted for the width, and different numbers of active members 51 can be added to detect the flatness through multiple equidistant laser detection heads in the horizontal direction, improving work efficiency and reducing working time. At the same time, in case of road surface bumps, a reset assembly is also equipped to help the active member 51 quickly reset, further coping with various complex situations and improving work efficiency. Through the design of the detection mechanism, while detecting the flatness of the asphalt road surface by the laser ranging principle, the structure of the asphalt road surface can also be adjusted for the width, and different numbers of active members 51 can be added to detect the flatness through multiple equidistant laser detection heads in the horizontal direction, improving work efficiency and reducing working time. At the same time, in case of road surface bumps, a reset assembly is also equipped to help the active member 51 quickly reset, further coping with various complex situations and improving work efficiency.

[0053] Refer to Figures 18 - 26The connecting assembly includes two groups of positioning blocks 69 fixed on one side of the movable member 51, and a U-shaped clamping plate 71 is provided between each group of the positioning blocks 69. A rotating sleeve 70 is passed through the middle of the U-shaped clamping plate 71. The connecting assembly also includes two groups of connecting grooves 52 opened on one side of the movable member 51. A positioning groove 57 is respectively opened on both sides of the connecting groove 52, and the positioning groove 57 is adapted to the positioning block 69. A rotating shaft 61 is rotatably connected to one side of the middle part of the connecting groove 52, and a rotating plate 62 is fixed to the middle part of the rotating shaft 61. The end of the rotating shaft 61 extends to the opening of the connecting groove 52 and is sleeved in the rotating sleeve 70. The U-shaped clamping plate 71 is adapted to the rotating plate 62. The rotating plate 6 2 is provided with a plug-in slot 63 that matches the rotating sleeve 70, a fixed plate 60 that matches the rotating plate 62 is fixed on one side of the connecting slot 52, an adjusting slot and a receiving slot that are connected to the connecting slot 52 are respectively provided in the inner wall of the movable member 51, a sliding seat 58 is slidably connected in the adjusting slot, a return spring 2 72 is connected between one side of the sliding seat 58 and the inner wall of the adjusting slot, a plurality of limiting rods 59 are provided on the other side of the sliding seat 58, the end of the limiting rod 59 passes through the connecting slot 52 and extends to the positioning slot 57 and is immersed in the positioning block 69, a sliding block 65 is slidably connected in the receiving slot, an abutment plate 64 is fixed between the two sliding blocks 65, and the abutment plate 64 The end of the abutment plate 64 passes through the connecting groove 52, and the outer surface of the side of the abutment plate 64 away from the sliding block 65 is provided with a trapezoidal inclined plate 66. The trapezoidal inclined plate 66 passes through the horizontal opening in the connecting groove 52 and passes through the adjusting groove to be squeezed together with the outer surface of the sliding seat 58. The top of the abutment plate 64 is provided with a toggle block 67. The two sides of the top opening of the connecting groove 52 are respectively connected with a limiting collar 68 through a flexible belt. The limiting collar 68 is adapted to the toggle block 67. Through the design of the connecting component, after the split frame is adjusted, when the remaining movable parts 51 are assembled, the movable part 51 to be added is lifted so that the positioning block 69 on its side is vertically inserted into the positioning groove 57 of the current movable part 51. At the same time, the U-shaped clamping plate 71 is also vertically inserted into the connecting groove 52 on the rotating plate 62 in the vertical state. Subsequently, the connection and fixation can be completed with only one pulling action, that is, the horizontal detent block 67 drives the abutting plate 64 to move horizontally. While the abutting plate 64 moves horizontally, it will linearly squeeze the U-shaped clamping plate 71, thereby pushing the U-shaped clamping plate 71 and the rotating plate 62 to rotate into a horizontal state, thereby making the rotating plate 62 horizontally placed on the fixed plate 60. When the abutting plate 64 moves to the other side of the connecting groove 52, the limiting collar 68 at this position is sleeved on the toggle block 67 to limit the rotating plate 62. Moreover, before the rotating plate 62 moves, the trapezoidal inclined plate 66 at the end will abut and squeeze the sliding seat 58 through the plane, so that the sliding seat 58 will not move.Several limiting rods 59 on the side have not yet entered the connection groove 52. When the abutting plate 64 moves, the trapezoidal inclined plate 66 on the side will move from one side of the sliding seat 58 to the other side and gradually separate from the sliding seat 58. When completely separated, the sliding seat 58 loses the abutment of the trapezoidal inclined plate 66 and drives the limiting rod 59 to move under the action of the second reset spring 72. The limiting rod 59 will insert into the connection groove 52 until the inner end of the positioning groove 57 is inserted into the positioning block 69. At the same time, the rod body of the limiting rod 59 will abut against the outer surfaces of the fixing plate 60, the U-shaped clamping plate 71 and the abutting plate 64, synchronously realizing the function of abutting and limiting. In this way, the number of laser probes can be increased to adapt to asphalt pavements of different widths.

[0054] Refer to Figures 2 - 3 、 Figures 10 - 12 As shown in FIGS. 6 and 7, the split frame includes two symmetrically arranged fixed frames 6, two symmetrically arranged moving frames 7 and a split movable support plate 32. The two fixed frames 6 are respectively fixed on both sides of the top of the moving chassis 5. An inner cavity 8 is provided inside the fixed frame 6. Import and export ports penetrating to the outer surface of the side of the fixed frame 6 are respectively provided on both sides of the inner cavity 8. Several linkage gears 9 are rotatably connected in the middle of the inner cavity 8. A rack plate 10 is meshed on both sides of the linkage gear 9. The rack plate 10 is slidably connected in the inner cavity 8. The end of the rack plate 10 penetrates through the import and export port to the outside of the fixed frame 6 and is fixedly connected to the moving frame 7; The split movable support plate 32 includes two connecting pieces 33 and two movable frames 34. A first shaft rod 30 is provided in the middle of the outer surface of the movable frame 34. The first shaft rod 30 is rotatably connected in a first shaft sleeve 29. The first shaft sleeve 29 is fixed on the inner wall of the moving frame 7. A first angle sensor 31 matched with the first shaft rod 30 is provided on the moving frame 7. The two connecting pieces 33 are respectively located at both ends of the opposite sides of the two movable frames 34. A second shaft sleeve 48 is provided in the middle of one side of the connecting piece 33. A second shaft rod 49 is rotatably connected in the second shaft sleeve 48. The end of the second shaft rod 49 is connected to the movable member 51. A second angle sensor 50 matched with the second shaft rod 49 is provided on the second shaft sleeve 48. A guiding connecting plate 35 is respectively provided at the end of the opposite sides of the two movable frames 34. A guiding groove 36 matched with the guiding connecting plate 35 is provided on the other side of the movable frame 34. Sliding grooves 39 matched with the guiding connecting plate 35 are respectively provided on the upper and lower sides of the connecting piece 33; Through the design of the split frame, the connection relationship between the components of the split frame can be released by starting the adjusting mechanism. Subsequently, pull the moving frame 7 outwards. When the moving frame 7 moves, it will drive the other moving frame 7 to expand and move synchronously through the drive of the linkage gear 9. When the moving frame 7 moves, it will synchronously drive the movable frame 34 to move, realizing the adjustment of the size of the moving space of the movable member 51.

[0055] See also Figure 2 and Figure 27 The middle part of the split frame is provided with a reset assembly matched with the movable part 51, and the reset assembly includes an inclined surface 55 opened at the corner of the movable part 51 and a reset motor 73 arranged in the middle of the mobile frame 7, and the bottom output end of the reset motor 73 is connected with a motor shaft 74, and the bottom end of the motor shaft 74 passes through the bottom of the mobile frame 7 and is connected with a rotating disk 75, and the rotating disk 75 is rotatably connected to the bottom of the mobile frame 7, and the side of the rotating disk 75 is fixed with a reset rod 56 matched with the inclined surface 55; through the design of the reset assembly, when a large range of bumps occurs, at this time, the movable support plate 32 and the movable part 51 will be The movable support plate 32 or the movable part 51 is frequently rotated in a large range. At this time, the microcontroller stops the detection work of the central laser detection head 53 and the side laser detection head 54, and then starts the reset component to reset the movable support plate 32 and the movable part 51, that is, the start signal is transmitted to the reset motor 73 through the wireless transmission module, and the reset motor 73 drives the rotating disk 75 and the reset rod 56 to rotate through the motor shaft 74. The rotation of the reset rod 56 will push the movable support plate 32 or the movable part 51 in an inclined state through the side wall. The inclined surface 55 of the side wall of the movable support plate 32 or the movable part 51 will help the reset rod 56 to squeeze and push, thereby realizing the rapid reset of the movable support plate 32 or the movable part 51.

[0056] Example 2, see Figures 10 - 19 The adjusting mechanism includes a cavity opened inside the connecting member 33, a turntable 40 is rotatably connected in the middle of the cavity, a shaft in the middle of the turntable 40 penetrates into the cavity and is connected and fixed to the toggle member 41, a guide block 43 is vertically slidably connected to the upper and lower sides of the cavity, a guide slot matching the guide block 43 is opened on the side wall of the cavity, a damping spring 44 is connected between the inner wall of the guide slot and the guide block 43, a circular frame 47 matching the toggle member 41 is respectively provided on one side of the bottom of the sliding plate 42, and a locking sleeve 45 is respectively provided on the opposite side of the two sliding plates 42, and the locking sleeve 45 penetrates The slide groove 39 is snapped into the locking groove 37 on the outer surface of the guide connecting plate 35. The locking groove 37 is provided with an adsorption block 38. The middle part of the outer surface of the locking sleeve 45 is provided with an adsorption groove 46 that matches the adsorption block 38. Through the design of the adjustment mechanism, when it is necessary to adjust the extension range of the split frame, the turntable 40 can also be used to drive the toggle member 41 to rotate. When the toggle member 41 rotates, it will squeeze the circular frame 47 through the wing plates on both sides, thereby driving the sliding plates 42 on both sides to move vertically at the same time. The movement of the sliding plate 42 will push the locking sleeve 45 out of the locking groove 37 at the bottom of the guide connecting plate 35. At this time, the movable frame 7 can be pulled to adjust the position.

[0057] Embodiment 3. Please refer to Figures 4 - 9 , the adjusting mechanism includes two fixing members 12 and a limiting member 13. The two fixing members 12 are connected and fixed by the limiting member 13. The fixing member 12 includes a fixed bottom block 14 and a fixed top block 15. A support plate 11 is fixed to the bottom of the fixed bottom block 14. The bottom end of the support plate 11 passes through an adjustment opening formed in the top of the moving frame 7 and extends into the inner cavity 8 to be connected and fixed to the rack plate 10. The fixed bottom block 14 and the fixed top block 15 are connected and fixed by a fixing rod 19. An activity space is formed between the fixed bottom block 14 and the fixed top block 15. An activity ring 16 is rotatably connected in the activity space. Inlets 17 and outlets 18 are symmetrically formed on both sides of the activity ring 16. An activity groove 20 is formed in the inner wall of one side of the activity ring 16. An activity notch 21 penetrating to the outer surface of the activity ring 16 is formed on one side of the activity groove 20. A clamping block 22 is slidably connected in the activity groove 20. A slider 25 penetrating into the activity notch 21 is provided on the outer surface of the clamping block 22. The limiting member 13 includes a limiting seat 26 and a limiting frame 27. The limiting frame 27 is fixed to one side of the limiting seat 26. The limiting frame 27 passes through the inlets 17 and the outlets 18 and is arranged between two groups of the fixing members 12. A plurality of through holes 28 are formed in the limiting frame 27. The clamping block 22 penetrates through the through holes 28 to clamp and fix the limiting frame 27. A shielding plate 23 is provided on one side of the clamping block 22. A first return spring 24 is connected between the outer surface of the clamping block 22 and the inner wall of the activity groove 20; through the design of the adjusting mechanism, when it is necessary to adjust the extension range of the split frame, by pulling the slider 25 to drive the clamping block 22 to slide in the activity groove 20, the clamping block 22 is withdrawn from the through holes 28 on the limiting frame 27. Subsequently, the limiting frame 27 on the limiting member 13 is withdrawn from the two fixing members 12, and then the moving frame 7 can be pulled to move. After adjusting the moving distance, the limiting frame 27 on the limiting member 13 is inserted into the two fixing members 12, and then the clamping block 22 is used for clamping and fixing, so as to limit the adjusted split frame.

[0058] During use, the driving motor 3 on the traction assembly drives the driving wheel 4 to rotate, thereby dragging the detection mechanism to walk on the asphalt road surface. During the walking process, the detection mechanism will detect the flatness of the road surface through the laser ranging principle, that is, by inputting the data measured by the central laser detection head 53 and the side laser detection head 54 into the microcontroller for comparison and analysis, and then the flatness of the asphalt surface layer in the same direction can be obtained. With the movement of the detection mechanism, a comprehensive detection of the asphalt surface layer is realized.

[0059] When walking on an uneven road surface, the split frame will tilt. At this time, the movable support plate 32 or the movable part 51 will rotate relatively due to the influence of its own gravity, thereby ensuring that the detection mechanism maintains a horizontal posture and that the ranging laser emitted by the laser flatness detection device can be directed at the ground at a right angle, reducing the measurement error caused by the tilt of the incident angle. At the same time, the first angle sensor 31 and the second angle sensor 50 will detect the data of lateral rotation and longitudinal rotation, which can be used to analyze the inclination of the asphalt surface layer.

[0060] When a large-scale bump occurs, the movable support plate 32 and the movable part 51 will rotate frequently over a large range. At this time, the microcontroller will stop the detection work of the central laser detection head 53 and the side laser detection head 54, and then start the reset component to reset the movable support plate 32 and the movable part 51, that is, the start signal is transmitted to the reset motor 73 through the wireless transmission module, and the reset motor 73 drives the rotating disk 75 and the reset rod 56 to rotate through the motor shaft 74. The rotation of the reset rod 56 will push the movable support plate 32 or the movable part 51 in an inclined state through the side wall squeezing, and the inclined surface 55 of the side wall of the movable support plate 32 or the movable part 51 will help the reset rod 56 to squeeze and push, thereby realizing the rapid reset of the movable support plate 32 or the movable part 51.

[0061] When the ground to be inspected is larger than the length of the split frame, in order to avoid multiple rounds of inspection and improve the inspection efficiency, at this time, the slider 25 is pressed to drive the block 22 to slide in the movable groove 20, so that the block 22 is pulled out from the through hole 28 on the limit frame 27. Subsequently, the limit frame 27 on the limit member 13 is pulled out from the two fixed members 12, and the movable frame 7 is pulled outward. While the movable frame 7 moves, it will drive the movable frame 7 on the other side to synchronously expand and move outward through the drive of the linkage gear 9. When the movable frame 7 moves, it will synchronously drive the movable frame 34 to move, so as to adjust the size of the movable space of the movable member 51. After adjusting the moving distance, the limit frame 27 on the limit member 13 is inserted into the two fixed members 12, and then the block 22 is used to realize the card connection and fixation, so as to limit the adjusted split frame.

[0062] During the adjustment process of the above-mentioned split frame, the dial 40 can also be rotated to drive the toggle member 41 to rotate. When the toggle member 41 rotates, it will squeeze the circular frame 47 through the wing plates on both sides, thereby driving the sliding plates 42 on both sides to move vertically at the same time. The movement of the sliding plate 42 will drive the locking sleeve 45 to be pulled out from the locking groove 37 at the bottom of the guide connecting plate 35. At this time, the moving frame 7 can be pulled. The moving frame 7 will drive the movable frame 34 to move synchronously while moving, so as to adjust the size of the movable space of the movable member 51. After the space adjustment is completed, the dial 40 can be released. Under the action of the damping spring 44, the sliding plate 42 is reset and moves with the locking sleeve 45 to be again stuck in the locking groove 37 at the bottom of the guide connecting plate 35.

[0063] After the split frame is adjusted, when assembling the remaining movable parts 51, lift the movable part 51 to be added, so that the positioning block 69 on its side is vertically inserted into the positioning groove 57 of the current movable part 51, and synchronously, the U-shaped clamping plate 71 is also vertically inserted into the connecting groove 52 on the rotating plate 62 in the vertical state, and then, the connection and fixation can be completed with only one pulling action;

[0064] Specifically, the toggle block 67 is pressed laterally to drive the abutment plate 64 to move laterally. While the abutment plate 64 moves laterally, it will linearly squeeze the U-shaped clamping plate 71, thereby pushing the U-shaped clamping plate 71 and the rotating plate 62 to rotate into a horizontal state, thereby making the rotating plate 62 horizontally placed on the fixed plate 60. When the abutment plate 64 moves to the other side of the connecting groove 52, the limiting collar 68 at this position is sleeved on the toggle block 67 to limit the rotating plate 62. Moreover, before the rotating plate 62 moves, the trapezoidal inclined plate 66 at the end will squeeze the sliding seat 58 through the plane abutment, so that the sliding seat 58 will not move, and the several limiting rods 59 on the side have not yet entered the connecting groove. In the groove 52, when the abutment plate 64 moves, the trapezoidal inclined plate 66 on the side will move from one side of the sliding seat 58 to the other side and gradually separate from the sliding seat 58. When it is completely separated, the sliding seat 58 no longer has the abutment of the trapezoidal inclined plate 66, and under the action of the reset spring 2 72, the limit rod 59 is driven to move. The limit rod 59 will be inserted into the connecting groove 52 until it penetrates through the inner end of the positioning groove 57 and is immersed in the positioning block 69. At the same time, the rod body of the limit rod 59 will abut against the outer surfaces of the fixed plate 60, the U-shaped clamping plate 71 and the abutment plate 64, and the abutment limit function is realized simultaneously. In this way, the number of laser probes can be increased to adapt to asphalt pavements of different widths.

[0065] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A non-destructive testing device for the construction quality of an asphalt surface layer, characterized in that, The invention comprises a traction assembly, the rear side of which is connected to a detection mechanism via a universal shaft, the detection mechanism comprising a movable frame (5), the top of which is connected to a split frame, the split frame being provided with an adjustment mechanism, the interior of the split frame being rotatably connected to a movable part (51), a central laser detection head (53) being provided in the middle of the movable part (51), a side laser detection head (54) being provided on each side of the central laser detection head (53), a connecting assembly being provided on the side of the movable part (51), the connecting assembly comprising two groups of positioning blocks (69) fixed to one side of the movable part (51), a U-shaped clamping plate (71) being provided between each group of the positioning blocks (69), and a rotating sleeve (70) being passed through the middle of the U-shaped clamping plate (71).

2. The non-destructive testing device for the construction quality of the asphalt surface layer according to claim 1, characterized in that, The connecting assembly further comprises two groups of connecting grooves (52) formed on one side of the movable member (51), a positioning groove (57) being formed on both sides of the connecting groove (52), the positioning groove (57) being adapted to the positioning block (69), a rotating shaft (61) being rotatably connected to one side of the middle of the connecting groove (52), a rotating plate (62) being fixed to the middle of the rotating shaft (61), and an end of the rotating shaft (61) extending to an opening of the connecting groove (52) and being sleeved on the rotating sleeve (70). The U-shaped clamping plate (71) is adapted to the rotating plate (62), the rotating plate (62) is provided with a plug-in groove (63) matched with the rotating sleeve (70), a fixed plate (60) matched with the rotating plate (62) is fixed on one side of the connecting groove (52), an adjusting groove and a receiving groove connected to the connecting groove (52) are respectively provided in the inner wall of the movable member (51), a sliding seat (58) is slidably connected in the adjusting groove, and one side of the sliding seat (58) is connected to the adjusting groove. A second return spring (72) is connected between the inner walls of the node grooves. A plurality of limit rods (59) are arranged on the other side of the sliding seat (58). The ends of the limit rods (59) penetrate the connecting groove (52), extend into the positioning groove (57) and are immersed in the positioning block (69). A sliding block (65) is slidably connected in the accommodating groove. An abutment plate (64) is fixed between the two sliding blocks (65). The ends of the abutment plates (64) penetrate into the connecting groove (52). 4) A trapezoidal inclined plate (66) is provided on the outer surface of the side away from one end of the sliding block (65); the trapezoidal inclined plate (66) penetrates into the adjustment groove through a transverse opening provided in the connecting groove (52) and is pressed together with the outer surface of the sliding seat (58); a toggle block (67) is provided at the top of the abutting plate (64); a limiting ring (68) is connected to both sides of the top opening of the connecting groove (52) through a flexible belt, and the limiting ring (68) is adapted to the toggle block (67).

3. An apparatus for non-destructive detection of the construction quality of an asphalt surface layer according to claim 2, characterized in that, The split-type frame includes two symmetrically arranged fixed frames (6), two symmetrically arranged movable frames (7), and a split-type movable pallet (32). The two fixed frames (6) are respectively fixed on both sides of the top of the movable chassis (5). An inner cavity (8) is formed inside the fixed frame (6). Inlets and outlets penetrating to the outer surface of the side of the fixed frame (6) are respectively formed on both sides of the inner cavity (8). A plurality of linkage gears (9) are rotatably connected to the middle part of the inner cavity (8). One rack plate (10) is meshed on each side of the linkage gear (9). The rack plate (10) is slidably connected inside the inner cavity (8). The end of the rack plate (10) penetrates through the inlet and outlet to the outside of the fixed frame (6) and is fixedly connected to the movable frame (7).

4. The non-destructive testing device for the construction quality of the asphalt surface layer according to claim 3, characterized in that, The split-type movable pallet (32) includes two connecting members (33) and two movable frames (34). A first shaft rod (30) is provided in the middle of the outer surface of the movable frame (34). The first shaft rod (30) is rotatably connected inside a first shaft sleeve (29). The first shaft sleeve (29) is fixed on the inner wall of the movable frame (7). A first angle sensor (31) matched with the first shaft rod (30) is provided on the movable frame (7). The two connecting members (33) are respectively located at both ends of the opposite sides of the two movable frames (34). A second shaft sleeve (48) is provided in the middle of one side of the connecting member (33). A second shaft rod (49) is rotatably connected inside the second shaft sleeve (48). The end of the second shaft rod (49) is connected to the movable member (51). A second angle sensor (50) matched with the second shaft rod (49) is provided on the second shaft sleeve (48). A guiding connecting plate (35) is respectively provided at the end of the opposite sides of the two movable frames (34). A guiding groove (36) matched with the guiding connecting plate (35) is formed on the other side of the movable frame (34). Sliding grooves (39) matched with the guiding connecting plate (35) are respectively formed on the upper and lower sides of the connecting member (33).

5. The non-destructive testing device for the construction quality of an asphalt surface layer according to claim 4, wherein, A reset assembly matched with the movable member (51) is provided in the middle of the split-type frame. The reset assembly includes an inclined surface (55) formed at the corner of the movable member (51) and a reset motor (73) provided in the middle of the movable frame (7). The bottom output end of the reset motor (73) is connected with a motor shaft (74). The bottom end of the motor shaft (74) penetrates to the lower part of the movable frame (7) and is connected with a rotating disc (75). The rotating disc (75) is rotatably connected to the bottom of the movable frame (7). A reset rod (56) matched with the inclined surface (55) is fixed on the side of the rotating disc (75).

6. The non-destructive testing device for the construction quality of the asphalt surface layer according to claim 5, characterized in that, The traction assembly includes a traction vehicle body (1). Legs (2) are provided on the side of the traction vehicle body (1). Driving wheels (4) are installed at the bottom of the legs (2). A driving motor (3) is connected between two adjacent legs (2).

7. An apparatus for non-destructive detection of the construction quality of an asphalt surface layer according to claim 6, characterized in that, The universal shaft comprises a spherical shaft rod and a spherical shaft connecting seat, the spherical shaft connecting seat and the spherical shaft rod are movably connected, and the ends of the spherical shaft rod and the spherical shaft connecting seat are movably connected to the tractor body (1) and the split frame respectively.

8. An apparatus for non-destructive detection of the construction quality of an asphalt surface layer according to claim 7, characterized in that, An electric control chamber is provided in the tractor body (1), a wireless transmission module and a microcontroller are provided inside the electric control chamber, the wireless transmission module is electrically connected to the microcontroller, and the wireless transmission module is electrically connected to the drive motor (3), the first angle sensor (31), the second angle sensor (50), the central laser detection head (53), the side laser detection head (54), and the reset motor (73).

9. An apparatus for non-destructive testing of the construction quality of an asphalt surface layer according to claim 8, characterized in that The adjustment mechanism comprises a cavity provided inside the connecting member (33), a rotating disk (40) being rotatably connected in the middle of the cavity, a shaft in the middle of the rotating disk (40) passing through the cavity and being connected and fixed to the toggle member (41), a guide block (43) being vertically slidably connected to the upper and lower sides of the cavity respectively, a guide slot matching the guide block (43) being provided on the side wall of the cavity, a damping spring (44) being connected between the inner wall of the guide slot and the guide block (43), and the sliding plate ( A circular frame (47) cooperating with the toggle member (41) is provided on one side of the bottom of each of the two sliding plates (42), and a locking sleeve (45) is provided on the opposite side of each of the two sliding plates (42). The locking sleeve (45) penetrates into the sliding groove (39) and is snapped into the locking groove (37) on the outer surface of the guide connecting plate (35). An adsorption block (38) is provided inside the locking groove (37), and an adsorption groove (46) cooperating with the adsorption block (38) is provided in the middle of the outer surface of the locking sleeve (45).

10. An apparatus for non-destructive detection of the construction quality of an asphalt surface layer according to claim 7, characterized in that, The adjusting mechanism includes two fixing members (12) and a limiting member (13). The two fixing members (12) are connected and fixed by the limiting member (13). The fixing member (12) includes a fixing bottom block (14) and a fixing top block (15). A support plate (11) is fixed to the bottom of the fixing bottom block (14). The bottom end of the support plate (11) passes through an adjusting opening formed at the top of the moving frame (7) and extends into the inner cavity (8) to be connected and fixed to the rack plate (10). The fixing bottom block (14) and the fixing top block (15) are connected and fixed by a fixing rod (19). An activity space is formed between the fixing bottom block (14) and the fixing top block (15). An activity ring (16) is rotatably connected in the activity space. An inlet (17) and an outlet (18) are symmetrically formed on both sides of the activity ring (16). An activity groove (20) is formed in the inner wall of one side of the activity ring (16). An activity notch (21) penetrating through the outer surface of the activity ring (16) is formed on one side of the activity groove (20). A clamping block (22) is slidably connected in the activity groove (20). A sliding block (25) penetrating into the activity notch (21) is arranged on the outer surface of the clamping block (22). The limiting member (13) includes a limiting seat (26) and a limiting frame (27). The limiting frame (27) is fixed to one side of the limiting seat (26). The limiting frame (27) passes through the two groups of fixing members (12) through the inlet (17) and the outlet (18). A plurality of through holes (28) are formed in the limiting frame (27). The clamping block (22) passes through the through holes (28) to clamp and fix the limiting frame (27). A shielding plate (23) is arranged on one side of the clamping block (22). A first return spring (24) is connected between the outer surface of the clamping block (22) and the inner wall of the activity groove (20).

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