A roadbed construction thickness detection device

Abstract

The present invention belongs to the field of roadbed detection during road construction, and in particular relates to a device for detecting the thickness of roadbed construction, comprising a vehicle body frame in a rectangular structure, a thickness detector main unit fixedly provided on the inner wall of the rear side of the vehicle body frame, a pushing arm provided on the vehicle body frame, a lifting mechanism provided between the vehicle body frame and the pushing arm, a movable frame connected to the lifting mechanism, three groups of detection mechanisms provided on the movable frame, and a moving mechanism provided on the lower side of the vehicle body frame. The detection mechanism comprises a connecting frame in a rectangular structure connected to the movable frame via a ball joint, a detection probe connected to the thickness detector main unit via a wire fixedly provided on the lower side of the connecting frame. The present invention can keep the detection probe as parallel to the roadbed surface as possible, thereby solving the problem of measurement error caused by the inability of the detection probe to remain parallel to the roadbed surface and improving the accuracy of roadbed thickness detection.

Description

Technical Field

[0001] The invention belongs to the field of road construction subgrade detection, and in particular relates to a road construction subgrade thickness detection device. Background Art

[0002] Thickness testing during roadbed construction is a critical step in ensuring project quality, safety, and durability. By testing the roadbed thickness, we can effectively monitor construction quality, identify and correct potential issues promptly, and thus ensure the stability and long-term performance of the entire road structure.

[0003] Roadbed detection generally uses ultrasonic measurement. The main operating steps are to pre-embed measuring pads in each suitable road section before laying the roadbed. After the roadbed is laid, an ultrasonic detector is used to emit ultrasonic waves from above the roadbed towards the pre-embedded measuring pads, and the thickness of the roadbed is detected based on the time of ultrasonic feedback.

[0004] At present, this traditional roadbed thickness detection device has the following defects. The existing detection probe is generally equipped with a mobile vehicle, which drives the detection probe to pass through the measuring point for measurement. Since it is difficult for the vehicle to remain completely parallel to the roadbed when moving on the roadbed surface, there is a certain deviation in the height between the probe and the roadbed. Under this deviation, the data detected by emitting ultrasonic waves to the measuring gasket inside the roadbed will deviate from the actual roadbed thickness data, and the detection accuracy needs to be improved. Summary of the Invention

[0005] In view of the above problems, an embodiment of the present application provides a roadbed construction thickness detection device that can keep the detection probe as parallel to the roadbed surface as possible, solving the measurement error problem caused by the inability to keep the detection probe parallel to the roadbed surface, and improving the roadbed thickness detection accuracy.

[0006] In order to achieve the above-mentioned objectives, the embodiments of the present application provide the following technical solutions: The present invention provides a roadbed construction thickness detection device, comprising a rectangular body frame, a thickness detector main unit fixedly mounted on the rear inner wall of the body frame, a push arm mounted on the body frame, a lifting mechanism disposed between the body frame and the push arm, a movable frame connected to the lifting mechanism, three detection mechanisms disposed on the movable frame, and a movable mechanism disposed on the lower side of the body frame. The detection mechanism comprises a rectangular connection frame connected to the movable frame via a ball joint, a detection probe fixedly mounted on the lower side of the connection frame and connected to the thickness detector main unit via a wire, two symmetrical guide frames disposed on the lower side of the connection frame, a first connecting plate disposed at the lower end of each of the two guide frames, a first rotating shaft rotatably disposed on the upper side of the first connecting plate via a first ear plate, a test gasket fixedly connected to the first rotating shaft via a first connecting block, and a drive assembly disposed between any common ends of the two first rotating shafts. The drive assembly includes a worm gear fixedly connected to one end of the first rotating shaft, and a worm screw engaged with the corresponding worm gear is rotatably provided on the upper side of the two first connecting plates near the worm gear through the second ear plate. The two worm screws are fixedly connected by the first connecting shaft, and a drive motor is fixedly provided on any one of the second ear plates, and the output shaft of the drive motor is fixedly connected to one end of the adjacent worm screw.

[0007] According to a preferred embodiment, the guide frame includes a guide rod slidably inserted into the lower side of the connecting frame, and the surface section of the guide rod located on the lower side of the connecting frame is sleeved with a first spring, the lower end of the first spring is fixedly connected to the guide rod, the upper end of the first spring is fixedly connected to the lower side of the connecting frame, and the lower end of the guide rod is fixedly connected to the upper side of the first connecting plate.

[0008] According to a favorable embodiment, the movable frame includes two first horizontal plates, both of which are connected to the lifting mechanism and are symmetrically distributed on the left and right. The two first horizontal plates are fixedly connected to the second horizontal plate on opposite sides. The first and second horizontal plates are both provided with through holes extending along their respective length directions. Slides are slidably arranged in the through holes. The upper side of the slide located in the middle is rotatably connected to the left and right slides through connecting rods, and the upper side of the connecting frame is movably connected to the lower side of the corresponding slide through a ball joint.

[0009] According to a favorable embodiment, a plurality of left-right symmetrical locking grooves are provided on the upper side of the second cross plate along its length direction, and two symmetrical recesses are provided on the peripheral side wall of the sliding seat located in the middle. A locking bolt is movably inserted on the lower side wall of the recess, and the lower end of the locking bolt is threadedly connected to the corresponding locking groove.

[0010] According to a favorable embodiment, the pushing arm includes a first connecting arm rotatably connected to the vehicle body frame through a first connecting assembly, the first connecting arm is rotatably connected to the second connecting arm on a side away from the vehicle body frame through a second connecting assembly, and the second connecting arm is rotatably provided with a rotating rod on a side away from the first connecting arm, and a rotating handle is fixedly provided at both ends of the rotating rod, and a groove is provided on the side of the vehicle body frame away from the pushing arm, and two sockets are provided in the groove, and a slot with an arc-shaped structure is provided on the upper side of the socket for supporting and limiting the rotating handle.

[0011] According to a preferred embodiment, the first connecting component includes a second rotating shaft rotatably arranged on the upper side of the vehicle body frame through a third ear plate, the second rotating shaft is fixedly connected to the first connecting arm through a second connecting block, and the first connecting arm is in contact with the rear side wall of the vehicle body frame on the side close to the vehicle body frame; a first sliding groove is provided on the upper side of the vehicle body frame near the second rotating shaft, a second spring is fixedly provided on the front inner wall of the first sliding groove, a first sliding block fixedly connected to the second spring is slidingly provided in the first sliding groove, a first locking pin is fixedly connected to the front side of the first sliding block, a first locking hole is provided on the side of the first connecting arm close to the vehicle body frame, and the first positioning pin is movably plugged into the first locking hole.

[0012] According to a preferred embodiment, the second connecting assembly includes a third rotating shaft rotatably arranged on the upper side of the first connecting arm through a fourth ear plate, the third rotating shaft is fixedly connected to the second connecting arm through a third connecting block, a second sliding groove is provided on the left and right side walls of the second connecting arm, a second slider is slidably provided in the second sliding groove, a second locking pin is fixedly provided on the side of the second slider close to the first connecting arm, a second locking hole is provided on the side of the first connecting arm close to the second slider, one end of the second locking pin is slidably inserted into the second locking hole, and a third spring is fixedly connected to the side of the second slider away from the second locking pin, and the other end of the third spring is fixedly connected to the inner wall of the second sliding groove.

[0013] The cam is connected to the second guide wheel assembly and the second guide wheel assembly is connected to the second guide wheel assembly by the second cam, and the cam is connected to the second guide wheel assembly by the second cam.

[0014] According to a favorable embodiment, the moving mechanism includes four third connecting plates fixedly arranged at the four corners of the lower side of the vehicle body frame, a fourth rotating shaft is rotatably arranged between the two corresponding third connecting plates on the left and right, two symmetrical moving wheels are fixedly arranged on the fourth rotating shaft, and a locking assembly is provided on the side of the third connecting plate away from the adjacent moving wheel.

[0015] According to a favorable embodiment, the locking assembly includes a fourth connecting plate fixedly provided on the side wall of the third connecting plate, a connecting frame with a U-shaped structure is slidably connected to the fourth connecting plate, a lifting rod is fixedly provided on the upper end of the connecting frame, and the lifting rod is fixedly connected to the adjacent side wall of the skateboard, and the two pin ends of the connecting frame are commonly fixedly connected to a tooth plate, and a gear is fixedly provided on one end of the fourth rotating shaft close to the corresponding tooth plate, and the tooth plate is movably engaged with the gear.

[0016] Compared with the prior art, the roadbed construction thickness detection device provided by the embodiment of the present invention has the following beneficial effects:

[0017] 1. In the present invention, the lifting mechanism and movable frame are coordinated with the detection mechanism so that the detection probe on the detection mechanism can be kept as perpendicular to the roadbed surface as possible, thereby reducing the measurement error caused by the vehicle body frame not being able to remain parallel to the roadbed surface and improving the accuracy of roadbed thickness detection.

[0018] 2. In the present invention, the three groups of detection mechanisms can be changed in position on the movable frame as needed, and detection can be performed at different positions in the same test area of ​​the roadbed. The data can be compared and the average value can be calculated to measure the detection value closest to the actual thickness of the roadbed, thereby further improving the accuracy of roadbed thickness detection.

[0019] 3. In the present invention, the push arm can be folded relative to the vehicle body frame and inverted on top of the vehicle body frame, thereby reducing the footprint of the device. In addition, the push arm inverted on top of the vehicle body frame is arranged in a triangular shape, which can provide pressure protection for the thickness detector main unit in the vehicle body frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall three-dimensional structure diagram of the present invention.

[0021] Figure 2 It is an overall side plan view of the present invention.

[0022] Figure 3 It is a schematic diagram of the connection between the moving mechanism and the vehicle body frame in the present invention.

[0023] Figure 4 This is a structural diagram of the connection between the push arm and the vehicle body frame in the present invention.

[0024] Figure 5 This is an enlarged structural diagram of the connection between the first connecting arm and the second connecting arm in the present invention.

[0025] Figure 6 This is a structural diagram of the end portion of the push arm in the present invention.

[0026] Figure 7 This is a schematic diagram of the push arm after folding in the present invention.

[0027] Figure 8 It is a schematic diagram of the connection structure between the movable frame and the three detection mechanisms in the present invention.

[0028] Figure 9 This is the structural intention of the three detection mechanisms in the present invention after changing their positions on the movable frame. ( Figure 8 is the structural intention before changing position)

[0029] Figure 10 It is a schematic diagram of the external three-dimensional structure of the detection mechanism in the present invention.

[0030] Figure 11 It is a schematic diagram of the local structure of the detection mechanism in the present invention.

[0031] Figure 12 for Figure 11 Enlarged structural diagram of part A.

[0032] 1. Body frame; 11. Card seat; 2. Thickness detector main unit; 3. Push arm; 31. First connecting arm; 32. First connecting assembly; 321. Second rotating shaft; 322. Second connecting block; 323. First slider; 324. First locking pin; 33. Second connecting arm; 34. Second connecting assembly; 341. Third rotating shaft; 342. Third connecting block; 343. Second slider; 344. Second locking pin; 35. Rotating rod; 36. Rotating handle; 4. Lifting mechanism; 41. Slide plate; 42. First guide wheel; 43. Second guide wheel; 44. Take-up reel; 45. Ratchet; 46. Pawl; 47. First A connecting rope; 48, a second connecting rope; 5, a movable frame; 51, a first horizontal plate; 52, a second horizontal plate; 53, a slide; 54, a connecting rod; 55, a ball joint; 6, a detection mechanism; 61, a connecting frame; 62, a detection probe; 63, a guide frame; 64, a first connecting plate; 65, a first rotating shaft; 66, a test gasket; 67, a driving assembly; 671, a worm gear; 672, a worm; 673, a driving motor; 7, a moving mechanism; 71, a third connecting plate; 72, a fourth rotating shaft; 73, a moving wheel; 74, a locking assembly; 741, a fourth connecting plate; 742, a connecting frame; 743, a lifting rod; 744, a tooth plate; 745, a gear. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-12 This application is described in further detail.

[0034] Please refer to Figure 1 and Figure 2 A device for measuring thickness during roadbed construction includes a rectangular frame 1. A thickness detector 2 is fixedly mounted on the rear inner wall of the frame 1. A push arm 3 is mounted on the frame 1. A lifting mechanism 4 is provided between the frame 1 and the push arm 3. A movable frame 5 is connected to the lifting mechanism 4, and three sets of detection mechanisms 6 are mounted on the movable frame 5. A moving mechanism 7 is provided on the underside of the frame 1. A worker controls the movement of the detection mechanisms 6 by pushing and pulling the push arm 3, which cooperates with the moving mechanism 7. The detection mechanisms 6 cooperate with the lifting mechanism 4 to measure the roadbed thickness.

[0035] See Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7The push arm 3 includes a first connecting arm 31 rotatably connected to the vehicle body frame 1 via a first connecting assembly 32. A second connecting arm 33 is rotatably connected to the side of the first connecting arm 31 away from the vehicle body frame 1 via a second connecting assembly 34. A rotating rod 35 is rotatably provided on the side of the second connecting arm 33 away from the first connecting arm 31. A rotating handle 36 is fixedly provided at each end of the rotating rod 35. A groove is defined on the side of the vehicle body frame 1 away from the push arm 3. Two retaining members 11 are disposed within the groove. The upper side of the retaining members 11 includes an arc-shaped retaining groove for supporting and limiting the rotating handle 36.

[0036] In order to facilitate the carrying of the device, when working, the staff can control the movement of the entire device by holding the two ends of the rotating handle 36. When transportation is required, the first connecting arm 31 can be rotated above the vehicle body frame 1 through the first connecting component 32. At the same time, the first connecting arm 31 and the second connecting arm 33 can also be rotated, so that the pushing arm 3 can be upside down in a triangular posture above the vehicle body frame 1. It can not only reduce the overall footprint and facilitate carrying, but also the pushing arm 3 upside down in a triangular posture above the vehicle body frame 1 is directly above the thickness detector main body 2. When external objects fall, it can play a pressure-resistant role for the thickness detector main body, making it safer to carry.

[0037] See Figure 1 and Figure 4 The first connecting component 32 includes a second rotating shaft 321 rotatably set on the upper side of the body frame 1 through a third ear plate, the second rotating shaft 321 is fixedly connected to the first connecting arm 31 through a second connecting block 322, and the side of the first connecting arm 31 close to the body frame 1 is in contact with the rear side wall of the body frame 1; a first sliding groove is opened on the upper side of the body frame 1 near the second rotating shaft 321, a second spring is fixedly set on the front inner wall of the first sliding groove, a first slider 323 fixedly connected to the second spring is slidably set in the first sliding groove, a first locking pin 324 is fixedly connected to the front side of the first slider 323, a first locking hole is opened on the side of the first connecting arm 31 close to the body frame 1, and the first positioning pin is movably plugged into the first locking hole. When the first connecting arm 31 is opened, the lower side of the first connecting arm 31 contacts the rear arm of the vehicle body frame 1, and the first locking pin 324 is inserted into the first locking hole on the side wall of the first connecting arm 31, locking the first connecting arm 31 so that it cannot rotate during operation. When subsequently stored, the first locking pin 324 can be separated from the first locking hole by pushing the first slider 323 to release the first locking pin 324 from the first locking hole.

[0038] See Figure 1 and Figure 5The second connecting assembly 34 includes a third rotating shaft 341 rotatably mounted on the upper side of the first connecting arm 31 via a fourth lug. The third rotating shaft 341 is fixedly connected to the second connecting arm 33 via a third connecting block 342. Second sliding slots are defined on both the left and right sidewalls of the second connecting arm 33. A second slider 343 slides within the second sliding slots. A second locking pin 344 is fixedly mounted on the side of the second slider 343 closest to the first connecting arm 31. A second locking hole is defined on the side of the first connecting arm 31 closest to the second slider 343. One end of the second locking pin 344 slides and engages in the second locking hole. A third spring is fixedly mounted on the side of the second slider 343 away from the second locking pin 344. The other end of the third spring is fixedly connected to the inner wall of the second sliding slot. When the first and second connecting arms 31 and 33 are fully opened, the second locking pin 344 on the second connecting arm 33 is inserted into the second locking hole on the first connecting wall, limiting their rotation and ensuring they do not rotate during operation.

[0039] See Figure 1 and Figure 6 The upper side of the vehicle body frame 1 is provided with two guide holes symmetrical on the left and right sides. The lifting mechanism 4 includes a slide plate 41 slidably arranged in the guide holes. The two slide plates 41 are connected to the movable frame 5 together. The upper side of the vehicle body frame 1 is rotatably provided with a first guide wheel 42 through a second connecting plate. The upper side of the vehicle body frame 1 is close to the pushing arm 3 and is rotatably provided with a second guide wheel 43 through a second connecting shaft. The upper side of the vehicle body frame 1 is close to each second guide wheel 43 and is rotatably provided with a limit disk through a third connecting shaft. A wire take-up drum 44 is fixedly provided on the middle surface of the rotating handle 36. A ratchet 45 is fixedly provided on the rotating rod 35. A pawl 46 used in conjunction with the ratchet 45 is rotatably provided at the position of the second connecting arm 33 near the ratchet 45. A first connecting rope 47 is wound around the surface of the wire take-up drum 44. One end of the first connecting rope 47 is fixedly connected to the second connecting rope 48. One end of the second connecting rope 48 is movably sleeved on the first guide wheel 42 and the second guide wheel 43 corresponding to the front and rear and fixedly connected to the upper side of the corresponding slide plate 41. During movement, the handle 36 is manually rotated in the opposite direction to reel in the first connecting rope 47, thereby pulling both ends of the second connecting rope 48 toward the push arm 3. The two ends of the second connecting rope 48, under the action of the corresponding first guide wheel 42 and second guide wheel 43, respectively pull their respective slides 41 upward, thereby allowing the detection mechanism 6 to move away from the roadbed surface. During testing, the staff member opens the pawl 46, allowing the rotating rod 35 to drive the reel 44 to rotate forward, allowing the detection mechanism 6 to move closer to the ground for testing.

[0040] See Figure 1 、 Figure 2 and Figure 3The moving mechanism 7 includes four third connecting plates 71 fixedly mounted at the four corners of the lower side of the vehicle body frame 1. A fourth rotating shaft 72 is rotatably mounted between the two corresponding third connecting plates 71 on the left and right. Two symmetrical moving wheels 73 are fixedly mounted on the fourth rotating shaft 72. A locking assembly 74 is provided on the side of the third connecting plate 71 away from the adjacent moving wheels 73. The locking assembly 74 includes a fourth connecting plate 741 fixedly mounted on the side wall of the third connecting plate 71. A U-shaped connecting frame 742 is slidably connected to the fourth connecting plate 741. A lifting rod 743 is fixedly mounted on the upper end of the connecting frame 742. The lifting rod 743 is fixedly connected to the adjacent side wall of the slide 41. The two pin ends of the connecting frame 742 are fixedly connected to a gear plate 744. A gear 745 is fixedly mounted on the end of the fourth rotating shaft 72 closest to the corresponding gear plate 744. The gear plate 744 is movably engaged with the gear 745. The whole is supported and moved by the moving wheel 73. When the slide plate 41 moves up, the slide plate 41 will synchronously drive the connecting frame 742 to move up through the lifting rod 743, so that the tooth plate 744 originally engaged with the gear 745 moves up. After the gear 745 is released from the limit, the fourth shaft 72 can be rotated, allowing the moving wheel 73 to rotate. On the contrary, when the slide plate 41 moves down, the tooth plate 744 will engage with the gear 745, locking the moving wheel 73 to prevent the moving wheel 73 from rotating.

[0041] See Figure 1 、 Figure 8 、 Figure 9 and Figure 10 The movable frame 5 includes two first transverse plates 51 fixedly connected to the side walls of the corresponding slides 41. A second transverse plate 52 is fixedly connected to the opposite side of the two first transverse plates 51. Each of the first and second transverse plates 51 and 52 has a through hole extending along its length. Sliders 53 are slidably disposed within the through holes. The upper side of the middle slide 53 is rotatably connected to the left and right slides 53 via connecting rods 54. The detection mechanism 6 is connected to the lower side of the corresponding slide 53. The upper side of the second transverse plate 52 has multiple symmetrical locking grooves along its length. The middle slide 53 has two symmetrical notches on its sidewalls. Locking bolts are movably inserted into the lower side walls of the notches. The lower ends of the locking bolts are threadedly connected to the corresponding locking grooves.

[0042] In order to improve the detection accuracy, the three groups of detection mechanisms 6 can be arranged side by side on the movable frame 5 to detect the thickness of the roadbed in the same area, such as Figure 8 As shown, the three detection mechanisms 6 can change their positions by controlling the movement of the middle slide 53, so that the three detection mechanisms 6 can detect the roadbed thickness side by side, and at the same time, by changing the position of the middle slide 53, the positions of the other two slides 53 can be changed accordingly, as shown in FIG. Figure 9As shown, the positions of the three detection mechanisms 6 are continuously changed to perform detection and comparison, so as to further improve the accuracy of the detection data.

[0043] See Figure 1 、 Figure 10 、 Figure 11 and Figure 12 The detection mechanism 6 includes a connecting frame 61 with a rectangular structure and connected to the lower side of the slide 53 through a ball joint 55. A detection probe 62 connected to the thickness detector host 2 through a wire is fixedly provided on the lower side of the connecting frame 61. Two guide frames 63 symmetrically located on the lower side of the connecting frame 61 are provided. The guide frame 63 includes a guide rod slidably inserted into the lower side of the connecting frame 61. The surface section of the guide rod located on the lower side of the connecting frame 61 is sleeved with a first spring. The lower end of the first spring is fixedly connected to the guide rod, and the upper end of the first spring is fixedly connected to the lower side of the connecting frame 61. The lower end of the guide rod is fixedly connected to a first connecting plate 64. The upper side of the first connecting plate 64 is rotatably provided with a first rotating shaft 65 through a first ear plate. The first rotating shaft 65 is fixedly connected to a test gasket 66 through a first connecting block, and a driving assembly 67 is commonly provided between any same ends of the two first rotating shafts 65. The driving assembly 67 includes a worm gear 671 fixedly connected to one end of the first rotating shaft 65. The upper sides of the two first connecting plates 64 near the worm gear 671 are both provided with worms 672 that engage with the corresponding worm gear 671 through the second ear plate. The two worms 672 are fixedly connected through the first connecting shaft, and a driving motor 673 is fixedly provided on any one of the second ear plates. The output shaft of the driving motor 673 is fixedly connected to one end of the adjacent worm gear 672.

[0044] In order to further improve the detection accuracy, when the movable frame 5 moves downward under the control of the lifting mechanism 4, the lowest test pad 66 will come into contact with the roadbed surface. When the vehicle body frame 1 tilts relative to the roadbed, since the connecting frame 61 and the slide 53 are connected by the ball joint 55, the lower test pad 66 will adaptively fit on the roadbed surface. During this process, the detection probe 62 always maintains a vertical state with the test pad 66, so that the detection probe 62 maintains a vertical state relative to the roadbed. Then the detection probe 62 emits ultrasonic waves vertically relative to the test pad 66, first measures the relative distance between the test pad 66 and the detection probe 62 at this time, and measures the distance between the detection probe 62 and the test pad 66 at this time, that is, the distance between the detection probe 62 and the roadbed at this time. The actual distance of the surface (the thickness of the test gasket 66 is negligible), and then the worm 672 is driven to rotate by the driving motor 673. With the cooperation of the first connecting shaft, the two worms 672 simultaneously drive the corresponding worm gear 671 to rotate, so that the two first rotating shafts 65 drive the corresponding test gaskets 66 to rotate upward, and the two test gaskets 66 are switched from the original closed state to the open state. At this time, the test gasket 66 is moved away from the bottom of the detection probe 62, and then the detection probe 62 emits ultrasonic waves again. The ultrasonic waves diffuse toward the inside of the roadbed and are reflected back to the detection probe 62 after contacting the preset gasket inside the roadbed. The distance between the gasket inside the roadbed and the detection probe 62 is measured. The difference between this value and the previous detection value is the roadbed thickness value to be measured.

[0045] During specific operation, during transportation, the pushing arm 3 can be unlocked and inverted in a triangular shape above the vehicle body frame 1; during operation, the pushing arm 3 is opened and locked, and the staff controls the pushing arm 3 to push the entire device along the roadbed. After stopping, the lock on the take-up drum 44 is released by toggling the pawl 46, so that the take-up drum 44 rotates forward to pay out the wire, so that the slide 41 drives the movable frame 5 to move downward, and the test gasket 66 in the detection mechanism 6 is gradually brought close to the roadbed surface and the test gasket 66 is made to fit the roadbed surface as much as possible. Then, the detection probe 62 cooperates with the test gasket 66 to detect the distance between the detection probe 62 and the test gasket 66 at this time, which is set as x, that is, the actual distance between the detection probe 62 and the roadbed surface. Then, the test gasket 66 is removed from the roadbed surface, and the detection probe 62 emits ultrasonic waves toward the inside of the roadbed and cooperates with the gasket embedded in the roadbed to test the distance between the detection probe 62 and the gasket embedded in the roadbed, which is set as L. The value of LX=Y is calculated, which is the roadbed thickness of the roadbed measuring point, and the cycle is repeated.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A roadbed construction thickness detection device, comprising a rectangular body frame, with a thickness detector main unit fixedly mounted on the rear inner wall of the body frame, characterized in that: The vehicle body frame is provided with a pushing arm, a lifting mechanism is provided between the vehicle body frame and the pushing arm, a movable frame is connected to the lifting mechanism, three sets of detection mechanisms are provided on the movable frame, and a moving mechanism is provided on the lower side of the vehicle body frame; The detection mechanism includes a connecting frame connected to the movable frame through a ball joint and having a rectangular structure, a detection probe connected to the thickness detector host through a wire is fixedly provided on the lower side of the connecting frame, two guide frames are provided on the lower side of the connecting frame, and a first connecting plate is provided at the lower end of each of the two guide frames, a first rotating shaft is rotatably provided on the upper side of the first connecting plate through a first ear plate, the first rotating shaft is fixedly connected to the test gasket through a first connecting block, and a driving assembly is commonly provided between any common ends of the two first rotating shafts; The drive assembly includes a worm gear fixedly connected to one end of the first rotating shaft, and a worm screw meshing with the corresponding worm gear is rotatably provided on the upper side of the two first connecting plates near the worm gear through the second ear plate. The two worm screws are fixedly connected by the first connecting shaft, and a drive motor is fixedly provided on any one of the second ear plates, and the output shaft of the drive motor is fixedly connected to one end of the adjacent worm screw; The movable frame includes two first transverse plates, both connected to the lifting mechanism and symmetrically distributed on the left and right sides. A second transverse plate is fixedly connected to the opposite sides of the two first transverse plates. Through holes extending along their respective lengths are formed on the first and second transverse plates. Slide seats are slidably arranged in the through holes. The upper side of the slide seat located in the middle is rotatably connected to the left and right slide seats respectively through connecting rods. The upper side of the connecting frame is movably connected to the lower side of the corresponding slide seat through a ball joint. The upper side of the second transverse plate is provided with a plurality of bilaterally symmetrical locking grooves along its length direction, and the side wall of the sliding seat located in the middle is provided with two symmetrical notches, and the lower side walls of the notches are movably connected with locking bolts, and the lower ends of the locking bolts are threadedly connected to the corresponding locking grooves; The moving mechanism includes four third connecting plates fixedly disposed at the four corners of the lower side of the vehicle body frame, a fourth rotating shaft rotatably disposed between two corresponding left and right third connecting plates, two left and right symmetrical moving wheels fixedly disposed on the fourth rotating shaft, and a locking assembly disposed on the side of the third connecting plate away from the adjacent moving wheel; The locking assembly includes a fourth connecting plate fixedly arranged on the side wall of the third connecting plate, and a connecting frame with a U-shaped structure is slidably connected to the fourth connecting plate. A lifting rod is fixedly arranged on the upper end of the connecting frame, and the lifting rod is fixedly connected to the adjacent side wall of the skateboard. The two pin ends of the connecting frame are commonly fixedly connected to a tooth plate, and a gear is fixedly arranged on one end of the fourth rotating shaft close to the corresponding tooth plate, and the tooth plate is movably engaged with the gear.

2. A roadbed construction thickness detection device according to claim 1, characterized in that: The guide frame includes a guide rod slidably inserted into the lower side of the connecting frame, and the surface section of the guide rod located at the lower side of the connecting frame is sleeved with a first spring, the lower end of the first spring is fixedly connected to the guide rod, the upper end of the first spring is fixedly connected to the lower side of the connecting frame, and the lower end of the guide rod is fixedly connected to the upper side of the first connecting plate.

3. A roadbed construction thickness detection device according to claim 1, characterized in that: The pushing arm includes a first connecting arm rotatably connected to the vehicle body frame through a first connecting assembly, the first connecting arm is rotatably connected to the second connecting arm through a second connecting assembly on a side away from the vehicle body frame, a rotating rod is rotatably provided on the side of the second connecting arm away from the first connecting arm, and a rotating handle is fixedly provided at both ends of the rotating rod, a groove is provided on the side of the vehicle body frame away from the pushing arm, two sockets are provided in the groove, and a slot with an arc-shaped structure is provided on the upper side of the socket for supporting and limiting the rotating handle.

4. A roadbed construction thickness detection device according to claim 3, characterized in that: The first connecting component includes a second rotating shaft rotatably arranged on the upper side of the vehicle body frame through a third ear plate, the second rotating shaft is fixedly connected to the first connecting arm through a second connecting block, and the first connecting arm is in contact with the rear side wall of the vehicle body frame on the side close to the vehicle body frame; a first sliding groove is opened on the upper side of the vehicle body frame near the second rotating shaft, a second spring is fixedly arranged on the front inner wall of the first sliding groove, a first sliding block fixedly connected to the second spring is slidingly arranged in the first sliding groove, a first locking pin is fixedly connected to the front side of the first sliding block, and a first locking hole is opened on the side of the first connecting arm close to the vehicle body frame, and the first locking pin is movably plugged into the first locking hole.

5. A roadbed construction thickness detection device according to claim 3, characterized in that: The second connecting component includes a third rotating shaft rotatably arranged on the upper side of the first connecting arm through a fourth ear plate, the third rotating shaft is fixedly connected to the second connecting arm through the third connecting block, a second sliding groove is opened on the left and right side walls of the second connecting arm, a second slider is slidably arranged in the second sliding groove, a second locking pin is fixedly arranged on the side of the second slider close to the first connecting arm, a second locking hole is opened on the side of the first connecting arm close to the second slider, one end of the second locking pin is slidably inserted into the second locking hole, and a third spring is fixedly connected to the side of the second slider away from the second locking pin, and the other end of the third spring is fixedly connected to the inner wall of the second sliding groove.

6. A roadbed construction thickness detection device according to claim 3, characterized in that: The cam is connected to the upper and lower frames of the lifting link, and the cam is connected with the lower frame body to the upper and lower frames respectively.

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