Roadbed construction thickness detection device

Abstract

The invention belongs to the field of road construction roadbed detection, and particularly relates to a roadbed construction thickness detection device which comprises a vehicle body frame of a rectangular structure, a thickness detector host is fixedly arranged on the inner wall of the rear side of the vehicle body frame, and a pushing arm is arranged on the vehicle body frame. A lifting mechanism is jointly arranged between the vehicle body frame and the pushing arm, a movable frame is connected to the lifting mechanism, three sets of detection mechanisms are arranged on the movable frame, and a moving mechanism is arranged on the lower side of the vehicle body frame. The detection mechanism comprises a connecting frame which is connected with the movable frame through a spherical hinge and is of a rectangular structure, and a detection probe connected with the thickness detector host through a wire is fixedly arranged on the lower side of the connecting frame. The detection probe can be kept parallel to the surface of the roadbed as much as possible, the problem of measurement errors caused by the fact that the detection probe and the surface of the roadbed cannot be kept parallel is solved, and roadbed thickness detection precision is improved.

Description

Technical Field

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

[0002] Thickness testing during roadbed construction is one of the key links to ensure project quality, safety and durability. By testing the thickness of the roadbed, the construction quality can be effectively monitored, potential problems can be discovered and corrected in a timely manner, thereby ensuring 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 the top of the roadbed to the pre-embedded measuring pads, and the thickness of the roadbed is detected based on the ultrasonic feedback time.

[0004] At present, this traditional roadbed thickness detection device has the following defects. The existing detection probe is generally equipped with a mobile vehicle, and the detection probe is driven by the movement of the vehicle to pass through the measuring point for measurement. When the vehicle moves on the roadbed surface, it is difficult for the vehicle to remain completely parallel to the roadbed, which leads to 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, which can keep the detection probe as parallel to the roadbed surface as possible, solve the measurement error problem caused by the inability to keep the detection probe parallel to the roadbed surface, and improve the roadbed thickness detection accuracy.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: The present invention provides a roadbed construction thickness detection device, comprising a body frame of rectangular structure, a thickness detector host is fixedly arranged on the inner wall of the rear side of the body frame, a pushing arm is arranged on the body frame, a lifting mechanism is commonly arranged between the body frame and the pushing arm, a movable frame is connected to the lifting mechanism, three groups of detection mechanisms are arranged on the movable frame, and a moving mechanism is arranged on the lower side of the body frame. The detection mechanism comprises 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 arranged on the lower side of the connecting frame, two guide frames symmetrically arranged on the lower side of the connecting frame, a first connecting plate is arranged at the lower end of the two guide frames, a first rotating shaft is rotatably arranged on the upper side of the first connecting plate through a first ear plate, a test gasket is fixedly connected to the first rotating shaft through a first connecting block, and a driving assembly is commonly arranged between any same ends of the two first rotating shafts. The drive assembly includes a worm wheel fixedly connected to one end of the first rotating shaft, and a worm screw meshing with the corresponding worm wheel is rotatably arranged on the upper side of the two first connecting plates near the worm wheel through the second ear plate, and the two worm screws are fixedly connected through the first connecting shaft, and a drive motor is fixedly arranged 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 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.

[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 commonly fixedly connected to the second horizontal plate on the opposite side. The first and second horizontal plates are each provided with a through hole extending along their respective length directions. A sliding seat is slidably arranged in the through hole. The upper side of the sliding seat located in the middle is rotatably connected to the left and right sliding seats respectively through a connecting rod, and the upper side of the connecting frame is movably connected to the lower side of the corresponding sliding seat 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 in the middle, and 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, a rotating rod is rotatably provided on a side of the second connecting arm away from the first connecting arm, and rotating handles are fixedly provided at both ends of the rotating rod, a groove is provided on a side of the vehicle body frame away from the pushing arm, two sockets are provided in the groove, and a slot in 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 side of the first connecting arm close to the vehicle body frame is in contact with the rear side wall of the vehicle body frame; a first sliding groove is provided on the upper side of the vehicle body frame close to 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 slidably 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 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 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 arranged 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, 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] According to a preferred embodiment, two guide holes symmetrically arranged on the upper side of the vehicle body frame are provided, and the lifting mechanism includes a slide plate slidably arranged in the guide hole, and the left and right sides of the first cross plate are respectively fixedly connected to the side walls opposite to the two slide plates, and the upper side of the vehicle body frame is rotatably provided with a first guide wheel through a second connecting plate, and the upper side of the vehicle body frame is rotatably provided with a second guide wheel through a second connecting shaft near the pushing arm, and the upper side of the vehicle body frame is rotatably provided with a limit plate through a third connecting shaft near each second guide wheel, and the middle section surface of the rotating rod is fixedly provided with a wire take-up drum, and the rotating rod is fixedly provided with a ratchet, and the second connecting arm is rotatably provided with a ratchet pawl used in conjunction with the ratchet, and the surface of the wire take-up drum is wound with a first connecting rope, one end of the first connecting rope is fixedly connected to the second connecting rope, and one end of the second connecting rope is movably sleeved on the first guide wheel and the second guide wheel corresponding to the front and rear and fixedly connected to the corresponding upper side of the slide plate.

[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 arranged 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 arranged 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 arranged on the upper end of the connecting frame, the lifting rod is fixedly connected to the adjacent side wall of the skateboard, two pin ends of the connecting frame are commonly fixedly connected with a tooth plate, 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.

[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 the movable frame cooperate with the detection mechanism so that the detection probe on the detection mechanism can be kept vertical to the roadbed surface as much as possible, reducing the measurement error caused by the vehicle body frame being unable 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 of the same test area of ​​the roadbed, and the detection value closest to the actual thickness of the roadbed can be measured by comparing the data and calculating the average value, 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 the top of the vehicle body frame to reduce the footprint of the device, and the push arm inverted on the top of the vehicle body frame is arranged in a triangular shape, which can provide pressure protection for the thickness detector host 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 It is a structural diagram of the connection between the push arm and the vehicle body frame in the present invention.

[0024] Figure 5 It 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 It 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] Fig. 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] Fig.10 It is a schematic diagram of the external three-dimensional structure of the detection mechanism in the present invention.

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

[0031] Fig.12 for Fig.11 A magnified structural diagram of part A.

[0032] 1. Car body frame; 2. Thickness detector host; 3. Push arm; 4. First connecting arm; 5. First connecting assembly; 6. Second rotating shaft; 7. Second connecting block; 8. First slider; 9. First locking pin; 10. Second connecting arm; 11. Second rotating shaft; 12. Second connecting block; 13. First slider; 14. First locking pin; 15. Second connecting arm; 16. Second rotating shaft; 17. Third connecting block; 18. Second slider; 19. Second locking pin; 20. Rotating rod; 21. Rotating handle; 22. Lifting mechanism; 23. Slide plate; 24. First guide wheel; 25. Second guide wheel; 26. Second take-up reel; 27. Ratchet; 28. Ratchet pawl; 29. ​​First guide wheel; 30. Second take-up reel; 31. First connecting arm; 32. Second rotating shaft; 32. Second connecting block; 32. First slider; 32. 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. Ratchet 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 seat; 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 toothed plate; 745, a gear. DETAILED DESCRIPTION

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

[0034] Please refer to Figure 1 and Figure 2 A roadbed construction thickness detection device includes a body frame 1 in a rectangular structure, a thickness detector host 2 is fixedly arranged on the rear inner wall of the body frame 1, a push arm 3 is arranged on the body frame 1, a lifting mechanism 4 is arranged between the body frame 1 and the push arm 3, a movable frame 5 is connected to the lifting mechanism 4, three sets of detection mechanisms 6 are arranged on the movable frame 5, and a moving mechanism 7 is arranged on the lower side of the body frame 1. The staff controls the movement of the detection mechanism 6 by pushing and pulling the push arm 3 in cooperation with the moving mechanism 7, and the detection mechanism 6 cooperates with the lifting mechanism 4 to detect the roadbed thickness.

[0035] See also Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7The push arm 3 includes a first connecting arm 31 rotatably connected to the body frame 1 through 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 body frame 1 through 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, and a rotating handle 36 is fixedly provided at both ends of the rotating rod 35. A groove is provided on the side of the body frame 1 away from the push arm 3, and two clamping seats 11 are provided in the groove, and a clamping slot with an arc structure for supporting and limiting the rotating handle 36 is provided on the upper side of the clamping seat 11.

[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, and 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, which not only reduces the overall footprint and is easy to carry, but also the pushing arm 3 upside down in a triangular posture above the vehicle body frame 1 is located above the thickness detector main body 2. When an external object falls, it can play a compressive role for the thickness detector main body, making it safer to carry.

[0037] See also Figure 1 and Figure 4 The first connecting component 32 includes a second rotating shaft 321 rotatably arranged 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 contacts the rear side wall of the body frame 1; a first sliding groove is opened at a position close to the second rotating shaft 321 on the upper side of the body frame 1, a second spring is fixedly arranged on the front inner wall of the first sliding groove, a first sliding block 323 fixedly connected to the second spring is slidably arranged in the first sliding groove, a first locking pin 324 is fixedly connected to the front side of the first sliding block 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, thereby locking the first connecting arm 31 so that it cannot rotate during operation. When the first connecting arm 31 is 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 also Figure 1 and Figure 5The second connecting assembly 34 includes a third rotating shaft 341 which is rotatably arranged on the upper side of the first connecting arm 31 through a fourth ear plate, the third rotating shaft 341 is fixedly connected to the second connecting arm 33 through a third connecting block 342, a second sliding groove is provided on both the left and right side walls of the second connecting arm 33, a second slider 343 is slidably arranged in the second sliding groove, a second locking pin 344 is fixedly arranged on the side of the second slider 343 close to the first connecting arm 31, a second locking hole is provided on the side of the first connecting arm 31 close to the second slider 343, one end of the second locking pin 344 is slidably inserted into the second locking hole, a third spring is fixedly connected to the side of the second slider 343 away from the second locking pin 344, and the other end of the third spring is fixedly connected to the inner wall of the second sliding groove. When the first connecting arm 31 and the second connecting arm 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, and the two are rotationally limited to ensure that they will not rotate during operation.

[0039] See also Figure 1 and Figure 6 The upper side of the vehicle body frame 1 is provided with two guide holes symmetrically arranged 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 rotatably provided with a second guide wheel 43 through a second connecting shaft, and the upper side of the vehicle body frame 1 is rotatably provided with a limit plate through a third connecting shaft near each second guide wheel 43, a take-up drum 44 is fixedly provided on the surface of the middle section of the rotating handle 36, a ratchet 45 is fixedly provided on the rotating rod 35, a ratchet 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 take-up drum 44, one end of the first connecting rope 47 is fixedly connected with a 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 sides and fixedly connected to the upper side of the corresponding slide plate 41. During movement, the handle 36 is manually controlled to rotate in the opposite direction to reel in the first connecting rope 47, thereby pulling both ends of the second connecting rope 48 to move toward the direction of the push arm 3 at the same time. The two ends of the second connecting rope 48 pull their respective slide plates 41 upward under the action of the corresponding first guide wheel 42 and the second guide wheel 43, respectively, so that the detection mechanism 6 can be away from the roadbed surface. During detection, the staff member opens the ratchet 46, so that the rotating rod 35 can drive the reel 44 to rotate forward, so that the detection mechanism 6 can be close to the ground for detection.

[0040] See also Figure 1 , Figure 2 and Figure 3The moving mechanism 7 includes four third connecting plates 71 fixedly arranged at the four corners of the lower side of the vehicle body frame 1, a fourth rotating shaft 72 is rotatably arranged between the two corresponding third connecting plates 71 on the left and right, two symmetrical moving wheels 73 are fixedly arranged on the fourth rotating shaft 72, and a locking assembly 74 is arranged 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 arranged on the side wall of the third connecting plate 71, a connecting frame 742 with a U-shaped structure is slidably connected to the fourth connecting plate 741, a lifting rod 743 is fixedly arranged on the upper end of the connecting frame 742, and the lifting rod 743 is fixedly connected to the adjacent side wall of the slide plate 41, and a tooth plate 744 is fixedly connected to the two pin ends of the connecting frame 742, and a gear 745 is fixedly arranged on one end of the fourth rotating shaft 72 close to the corresponding gear plate 744, and 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, so that the moving wheel 73 can rotate. On the contrary, when the slide plate 41 moves down, the tooth plate 744 will engage with the gear 745 to lock the moving wheel 73 to prevent the moving wheel 73 from rotating.

[0041] See also Figure 1 , Figure 8 , Fig. 9 and Fig.10 The movable frame 5 includes two first transverse plates 51 respectively fixedly connected to the side walls of the corresponding slide plates 41, and the second transverse plates 52 are fixedly connected to the opposite sides of the two first transverse plates 51. The first transverse plates 51 and the second transverse plates 52 are both provided with through holes extending along their respective length directions, and slide seats 53 are slidably arranged in the through holes. The upper side of the slide seat 53 located in the middle is rotatably connected to the left and right slide seats 53 through connecting rods 54; the detection mechanism 6 is connected to the lower side of the corresponding slide seat 53. The upper side of the second transverse plate 52 is provided with a plurality of left-right symmetrical locking grooves along its length direction, and the side wall of the slide seat 53 located in the middle is provided with two symmetrical notches, and a locking bolt is movably inserted on the lower side wall of the notch, and the lower end of the locking bolt is threadedly connected to the corresponding locking groove.

[0042] In order to improve the detection accuracy, the three sets 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, such as Fig. 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 also Figure 1 , Fig.10 , Fig.11 and Fig.12 The detection mechanism 6 includes a connecting frame 61 which is connected to the lower side of the slide seat 53 through a ball joint 55 and has a rectangular structure. A detection probe 62 which is connected to the thickness detector host 2 through a wire is fixedly arranged on the lower side of the connecting frame 61. Two guide frames 63 which are symmetrical on the left and right are arranged on the lower side of the connecting frame 61. The guide frame 63 includes a guide rod which is 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. 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. A first rotating shaft 65 is rotatably arranged on the upper side of the first connecting plate 64 through a first ear plate. The first rotating shaft 65 is fixedly connected to a test gasket 66 through a first connecting block. A driving assembly 67 is commonly arranged 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, and a worm 672 meshing with the corresponding worm gear 671 is rotatably provided on the upper side of the two first connecting plates 64 near the worm gear 671 through a second ear plate, and the two worm gears 672 are fixedly connected through a first connecting shaft, and a driving motor 673 is fixedly provided on any one of the second ear plates, and 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 surface of the roadbed. When the vehicle body frame 1 tilts relative to the roadbed, since the connection frame 61 and the slide seat 53 are connected by the ball joint 55, the lower test pad 66 will adaptively fit on the surface of the roadbed. 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, and then the detection probe 62 emits ultrasonic waves vertically relative to the test pad 66, first measuring the relative distance between the test pad 66 and the detection probe 62 at this time, and measuring 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 on 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 wheels 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 originally 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 push arm 3 can be unlocked and inverted on the top of the vehicle body frame 1 in a triangular shape; during operation, the push arm 3 is opened and locked, and the staff controls the push arm 3 to push the entire device to move along the roadbed. After stopping the movement, the take-up drum 44 is unlocked by toggling the ratchet 46 so that the take-up drum 44 rotates forward to release the wire, so that the slide plate 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 distance between the detection probe 62 and the test gasket 66 at this time is detected by the detection probe 62 and the test gasket 66, which is set to x, that is, the actual distance between the detection probe 62 and the roadbed surface. Then, the test gasket 66 is moved away from the roadbed surface, and the detection probe 62 emits ultrasonic waves toward the inside of the roadbed and cooperates with the gasket pre-buried in the roadbed to test the distance between the detection probe 62 and the gasket pre-buried in the roadbed, which is set to 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 specification 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 body frame (1) of a rectangular structure, a thickness detector host (2) being fixedly arranged on the rear inner wall of the body frame (1), characterized in that: The vehicle body frame (1) is provided with a pushing arm (3), a lifting mechanism (4) is provided between the vehicle body frame (1) and the pushing arm (3), a movable frame (5) is connected to the lifting mechanism (4), three sets of detection mechanisms (6) are provided on the movable frame (5), and a moving mechanism (7) is provided on the lower side of the vehicle body frame (1); The detection mechanism (6) comprises a connection frame (61) connected to the movable frame (5) via a ball joint (55) and having a rectangular structure. A detection probe (62) connected to the thickness detector main unit (2) via a wire is fixedly arranged on the lower side of the connection frame (61). Two left-right symmetrical guide frames (63) are arranged on the lower side of the connection frame (61). A first connection plate (64) is arranged at the lower end of each of the two guide frames (63). A first rotating shaft (65) is rotatably arranged on the upper side of the first connection plate (64) via a first ear plate. The first rotating shaft (65) is fixedly connected to a test gasket (66) via a first connection block. A driving assembly (67) is commonly arranged between any same ends of the two first rotating shafts (65). The driving assembly (67) comprises a worm gear (671) fixedly connected to one end of the first rotating shaft (65); a worm (672) meshing with the corresponding worm gear (671) is rotatably arranged on the upper sides of the two first connecting plates (64) at positions close to the worm gear (671) via a second ear plate; the two worm gears (672) are fixedly connected via a first connecting shaft; and a driving motor (673) is fixedly arranged on any one of the second ear plates; the output shaft of the driving motor (673) is fixedly connected to one end of an adjacent worm gear (672).

2. A roadbed construction thickness detection device according to claim 1, characterized in that: The guide frame (63) comprises a guide rod slidably inserted into the lower side of the connecting frame (61); a first spring is sleeved on the surface section of the guide rod located at the lower side of the connecting frame (61); 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 (61); and the lower end of the guide rod is fixedly connected to the upper side of the first connecting plate (64).

3. A roadbed construction thickness detection device according to claim 1, characterized in that: The movable frame (5) comprises two first transverse plates (51) which are both connected to the lifting mechanism (4) and are symmetrically distributed on the left and right sides. The two first transverse plates (51) are fixedly connected to the second transverse plate (52) on the opposite sides. The first transverse plate (51) and the second transverse plate (52) are both provided with through holes extending along their respective length directions. Slide seats (53) are slidably arranged in the through holes. The upper side of the slide seat (53) located in the middle is rotatably connected to the left and right slide seats (53) respectively through a connecting rod (54). The upper side of the connecting frame (61) is movably connected to the lower side of the corresponding slide seat (53) through a ball joint (55).

4. A roadbed construction thickness detection device according to claim 3, characterized in that: The upper side of the second transverse plate (52) is provided with a plurality of left-right symmetrical locking grooves along its length direction, and the sliding seat (53) located in the middle is provided with two symmetrical notches on the peripheral side wall, and a locking bolt is movably inserted on the lower side wall of the notch, and the lower end of the locking bolt is threadedly connected to the corresponding locking groove.

5. A roadbed construction thickness detection device according to claim 1, characterized in that: The pushing arm (3) comprises a first connecting arm (31) rotatably connected to the vehicle body frame (1) via a first connecting assembly (32); a side of the first connecting arm (31) away from the vehicle body frame (1) is rotatably connected to a second connecting arm (33) via a second connecting assembly (34); a side of the second connecting arm (33) away from the first connecting arm (31) is rotatably provided with a rotating rod (35); both ends of the rotating rod (35) are fixedly provided with rotating handles (36); a groove is provided on a side of the vehicle body frame (1) away from the pushing arm (3); two clamping seats (11) are provided in the groove; an arc-shaped clamping groove for supporting and limiting the rotating handle (36) is provided on the upper side of the clamping seat (11).

6. A roadbed construction thickness detection device according to claim 5, characterized in that: The first connecting component (32) comprises a second rotating shaft (321) rotatably arranged on the upper side of the vehicle 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 vehicle body frame (1) contacts the rear side wall of the vehicle body frame (1); a first sliding groove is provided at a position close to the second rotating shaft (321) on the upper side of the vehicle body frame (1), a second spring is fixedly arranged on the front inner wall of the first sliding groove, a first sliding block (323) fixedly connected to the second spring is slidably arranged in the first sliding groove, a first locking pin (324) is fixedly connected to the front side of the first sliding block (323), a first locking hole is provided on the side of the first connecting arm (31) close to the vehicle body frame (1), and the first positioning pin is movably plugged into the first locking hole.

7. A roadbed construction thickness detection device according to claim 5, characterized in that: The second connecting component (34) includes a third rotating shaft (341) rotatably arranged on the upper side of the first connecting arm (31) through a fourth ear plate, the third rotating shaft (341) is fixedly connected to the second connecting arm (33) through a third connecting block (342), a second sliding groove is provided on the left and right side walls of the second connecting arm (33), a second sliding block (343) is slidably arranged in the second sliding groove, a second locking pin (344) is fixedly arranged on the side of the second sliding block (343) close to the first connecting arm (31), a second locking hole is provided on the side of the first connecting arm (31) close to the second sliding block (343), one end of the second locking pin (344) is slidably inserted into the second locking hole, a third spring is fixedly connected to the side of the second sliding block (343) away from the second locking pin (344), and the other end of the third spring is fixedly connected to the inner wall of the second sliding groove.

8. A roadbed construction thickness detection device according to claim 5, characterized in that: The upper side of the body frame (1) is provided with two guide holes symmetrically arranged on the left and right sides, the lifting mechanism (4) comprises a slide plate (41) slidably arranged in the guide hole, the left and right sides of the first cross plate (51) are respectively fixedly connected to the side walls opposite to the two slide plates (41), the upper side of the body frame (1) is provided with a first guide wheel (42) rotatably arranged through a second connecting plate, the upper side of the body frame (1) is provided with a second guide wheel (43) rotatably arranged through a second connecting shaft at a position close to the push arm (3), and the upper side of the body frame (1) is provided with a limited rotation axis at a position close to each second guide wheel (43) through a third connecting shaft. A take-up drum (44) is fixedly arranged on the middle surface of the rotating rod (35), a ratchet (45) is fixedly arranged on the rotating rod (35), a ratchet (46) for use with the ratchet (45) is rotatably arranged on the second connecting arm (33) near the ratchet (45), a first connecting rope (47) is wound around the surface of the 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 is fixedly connected to the upper side of the corresponding slide plate (41).

9. A roadbed construction thickness detection device according to claim 8, characterized in that: The moving mechanism (7) comprises four third connecting plates (71) respectively fixedly arranged at the four corners of the lower side of the vehicle body frame (1); a fourth rotating shaft (72) is rotatably arranged between two corresponding third connecting plates (71) on the left and right; two left-right symmetrical moving wheels (73) are fixedly arranged on the fourth rotating shaft (72); and a locking assembly (74) is arranged on one side of the third connecting plate (71) away from the adjacent moving wheel (73).

10. A roadbed construction thickness detection device according to claim 9, characterized in that: The locking assembly (74) includes a fourth connecting plate (741) fixedly arranged on the side wall of the third connecting plate (71), and a connecting frame (742) with a U-shaped structure is slidably connected to the fourth connecting plate (741). A lifting rod (743) is fixedly arranged on the upper end of the connecting frame (742), and the lifting rod (743) is fixedly connected to the adjacent side wall of the slide plate (41). The two pin ends of the connecting frame (742) are commonly fixedly connected with a tooth plate (744), and a gear (745) is fixedly arranged on one end of the fourth rotating shaft (72) close to the corresponding tooth plate (744), and the tooth plate (744) is movably engaged with the gear (745).

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