Thickness detection device for highway engineering

Abstract

The invention relates to the technical field of highway thickness detection, and discloses a highway engineering thickness detection device, which comprises a main plate, the upper end of the main plate is fixedly connected with a support frame, the inner side of the support frame is provided with a pushing mechanism, and the upper end of the pushing mechanism is provided with a measuring mechanism for detecting the highway thickness. A roller is arranged at the lower end of the main plate, a fixing mechanism is arranged at the rear end of the roller, and the measuring mechanism comprises a fixing plate. Compared with the prior art, the device has the advantages that when the device is used for detecting an upslope road, the device can be overturned to be perpendicular to the slope surface and move downwards to drill a sample core, the drill barrel is connected with the drilled sample core through the spiral groove formed in the spiral piece, the device is pulled and fixed to a certain degree, impact force caused by drilling to the device is relieved, and the device is convenient to use. The equipment is effectively prevented from deviating during slope pavement sampling measurement, and the sampling measurement accuracy is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of highway thickness detection, in particular to a thickness detection device for highway engineering. Background Art

[0002] Highway refers to a road that connects cities, urban and rural areas, villages and industrial and mining bases, which is built according to national technical standards and approved by the highway authorities. In the maintenance and inspection of highways, the thickness of the highway is directly related to the bearing capacity and durability of the road. By measuring the thickness, we can ensure that the road is constructed according to the design requirements. By regularly measuring the thickness of the highway, potential problems can be discovered in time, such as local thinness or unevenness, so that preventive maintenance measures can be taken to avoid the problem from expanding.

[0003] However, when measuring the thickness of the uphill area of ​​the highway, the measuring drilling equipment is easily offset due to the slope, and it is not convenient to place the measuring equipment vertically on the slope, and the sample cores cannot be taken out at the same time, which not only brings a certain amount of workload to the staff, but also cannot ensure the accuracy of the sampling measurement of the thickness of the sloped highway. For this reason, we propose a thickness detection device for highway engineering. Summary of the invention

[0004] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a thickness detection device for highway engineering is provided, comprising a main board, the upper end of the main board is fixedly connected to a support frame, the inner side of the support frame is provided with a pushing mechanism, the upper end of the pushing mechanism is provided with a measuring mechanism for detecting the thickness of the highway, the lower end of the main board is provided with a roller, the rear end of the roller is provided with a fixing mechanism, the measuring mechanism comprises a fixing plate, the upper end of the fixing plate is fixedly connected to two groups of first connecting blocks, the front ends of the two groups of the first connecting blocks are both provided with a first electric push rod, the output ends of the two groups of the first electric push rods are commonly fixedly connected to a moving plate, the inner side of the moving plate is fixedly connected to a connecting cylinder, and the front end of the connecting cylinder is rotatably connected to a drill cylinder.

[0005] Preferably, the lower end of the fixed plate is movably connected to the support frame, the connecting tube is communicated with the inner side of the drill tube, an observation port is opened on the outer side of the connecting tube, the surfaces of the connecting tube and the drill tube are provided with scales, the front end of the drill tube is fixedly connected with drill teeth, and the inner side of the drill tube is provided with spiral sheets.

[0006] Preferably, a connecting groove is opened on the inner side of the connecting tube, a rotating plate is rotatably connected to the inner side of the connecting groove, two groups of rotating rods are fixedly connected to the front end of the rotating plate, and the front ends of the two groups of rotating rods are fixedly connected to the drill tube.

[0007] Preferably, a slide groove is provided at the upper end of the fixed plate, a slider is slidably connected to the inner side of the slide groove, a connecting plate is fixedly connected to the upper end of the slider, a second connecting block is fixedly connected to the rear end of the connecting plate, and a second electric push rod is arranged at the front end of the second connecting block.

[0008] Preferably, the output end of the second electric push rod is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating plate, the outer side of the motor is fixedly connected to a fixed cylinder, a slot is provided on the outer side of the fixed cylinder, a block is movably connected to the inner side of the slot, and the front end of the block is fixedly connected to the movable plate.

[0009] Preferably, the pushing mechanism includes two groups of fixed blocks one and two groups of fixed blocks two, the upper ends of the two groups of fixed blocks one are commonly fixedly connected to the fixed plate, the upper ends of the two groups of fixed blocks two are commonly fixedly connected to the fixed plate, the two groups of fixed blocks one are rotatably connected to each other via a rotating shaft, and the two groups of fixed blocks two are rotatably connected to each other via a rotating shaft.

[0010] Preferably, two groups of fixed blocks three are fixedly connected to the upper end of the main board, and a rotating block three is rotatably connected between the two groups of fixed blocks three via a rotating shaft, a multi-stage cylinder is fixedly connected to the outer side of the rotating block three, and the output end of the multi-stage cylinder is fixedly connected to the rotating block one, and two groups of fixed blocks four are fixedly connected to the upper end of the main board, and a rotating block four is rotatably connected between the two groups of fixed blocks four via a rotating shaft, a connecting rod is fixedly connected to the outer side of the rotating block four, and the upper end of the connecting rod is fixedly connected to the rotating block two.

[0011] Preferably, a support rod is fixedly connected to one side of the connecting rod, and a rotating drum is rotatably connected to the outer side of the support rod, two groups of fixed blocks five are fixedly connected to the upper end of the main board, and a rotating block five is rotatably connected between the two groups of fixed blocks five via a rotating shaft, and a single-stage cylinder is fixedly connected to the outer side of the rotating block five, and the output end of the single-stage cylinder is fixedly connected to the rotating drum.

[0012] Preferably, the fixing mechanism includes two groups of symmetrical support plates, the lower ends of the support plates are fixedly connected to the main board, grooves are provided on opposite sides of the two groups of support plates, and the inner sides of the grooves are movably connected with clamping columns through springs, and tooth plates are slidably connected to opposite sides of the two groups of support plates, a first opening is provided on the surface of the main board, and the lower ends of the tooth plates are fixedly connected to multiple groups of clamping strips through the first opening.

[0013] Preferably, the rear end of the tooth plate is meshed with a gear, one side of the gear is fixedly connected to a mounting rod, one side of the mounting rod passes through a support plate and is fixedly connected to an extension plate, the mounting rod is rotatably connected to the support plate, a handle is commonly fixedly connected between the two groups of extension plates, the front end of the extension plate is fixedly connected to an arc block, a connecting hole is provided on the inner side of the extension plate, the clamping column is movably connected to the inner side of the connecting hole, and a second opening is provided on the surface of the main board.

[0014] Compared with the prior art, the present invention provides a thickness detection device for highway engineering, which has the following beneficial effects: 1. A thickness detection device for highway engineering. When the device is used to detect an uphill highway, the multi-stage cylinder and the single-stage cylinder are started to push the fixed plate to move, and under the restriction of the connecting rod, the fixed plate is flipped to a state perpendicular to the slope surface to move downward to drill a sampling core. After the drill tube drills into the inner side of the highway, the distance of the road surface can be observed through a scale, and the sample core can be measured to detect the thickness of the slope highway, thereby ensuring the accuracy of the sampling measurement.

[0015] 2. A thickness detection device for highway engineering, when the drill barrel and the drill teeth move downward to drill a sample core, as the drill barrel rotates deeper, it will drive the spiral piece to rotate at the same time, so that the spiral piece will simultaneously cut the outer side of the drilled sample core, so that the drill barrel and the drilled sample core are connected through the spiral groove opened by the spiral piece, which produces a certain pulling and fixing effect on the device, and can reduce the impact force caused by drilling on the device. At the same time, with the cooperation of the fixing mechanism, the device can be effectively prevented from being offset when sampling and measuring the road surface on a slope.

[0016] 3. This thickness detection device for highway engineering, when drilling is completed, during the retraction of the first electric push rod, the continuous spiral groove left on the outside of the sample core fits with the spiral sheet, and then the drilled road surface sample core can be removed from the road surface during the upward movement of the connecting tube, thereby avoiding the situation where the sample core is easily broken when the worker manually takes the sample core, ensuring the integrity of the sample core, and facilitating the worker to collect it for other processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the partial structure of the present invention Figure 1 ; Figure 3 It is a schematic diagram of the partial structure of the present invention Figure 2 ; Figure 4 It is a schematic diagram of the partial structure of the present invention Figure 3 ; Figure 5 Schematic diagram of the push mechanism of the present invention Figure 1 ; Figure 6 Schematic diagram of the push mechanism of the present invention Figure 2 ; Figure 7 The measuring mechanism of the present invention explodes Figure 1 ; Figure 8 The measuring mechanism of the present invention explodes Figure 2 ; Fig. 9 It is a cross-sectional view of the measuring mechanism of the present invention; Fig.10 The measuring mechanism of the present invention explodes Figure 3 ; Fig.11 It is a cross-sectional view of the fixing mechanism of the present invention.

[0018] In the figure: 1, main board; 2, support frame; 3, push mechanism; 31, fixed block 1; 32, fixed block 2; 33, rotating block 1; 34, rotating block 2; 35, fixed block 3; 36, rotating block 3; 37, multi-stage cylinder; 38, fixed block 4; 39, rotating block 4; 310, connecting rod; 311, support rod; 312, rotating cylinder; 313, fixed block 5; 314, rotating block 5; 315, single-stage cylinder; 4, measuring mechanism; 41, fixed plate; 42, first connecting block; 43, first electric push rod; 44, moving plate; 45, connecting cylinder; 46, observation port; 47, drilling cylinder; 48, Scale; 49, drill teeth; 410, connecting groove; 411, rotating plate; 412, rotating rod; 413, spiral sheet; 414, sliding groove; 415, sliding block; 416, connecting plate; 417, second connecting block; 418, second electric push rod; 419, motor; 420, fixing cylinder; 421, clamping groove; 422, clamping block; 5, roller; 6, fixing mechanism; 61, supporting plate; 62, clamping column; 63, tooth plate; 64, clamping strip; 65, gear; 66, mounting rod; 7, extension plate; 8, handle; 9, arc block; 10, connecting hole; 11, first opening; 12, second opening. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1 - Fig.11A thickness detection device for highway engineering includes a main board 1, a support frame 2 is fixedly connected to the upper end of the main board 1, a pushing mechanism 3 is arranged on the inner side of the support frame 2, a measuring mechanism 4 for detecting the thickness of the highway is arranged on the upper end of the pushing mechanism 3, a roller 5 is arranged at the lower end of the main board 1, a fixing mechanism 6 is arranged at the rear end of the roller 5, the measuring mechanism 4 includes a fixing plate 41, two groups of first connecting blocks 42 are fixedly connected to the upper end of the fixing plate 41, first electric push rods 43 are arranged at the front ends of the two groups of first connecting blocks 42, and a moving plate 44 is fixedly connected to the output ends of the two groups of first electric push rods 43, a connecting tube 45 is fixedly connected to the inner side of the moving plate 44, and a drill tube 47 is rotatably connected to the front end of the connecting tube 45.

[0021] In this embodiment, the lower end of the fixed plate 41 is movably connected to the support frame 2, the connecting tube 45 is connected to the inner side of the drill tube 47, an observation port 46 is provided on the outer side of the connecting tube 45, and a scale 48 is provided on the surface of the connecting tube 45 and the drill tube 47. The front end of the drill tube 47 is fixedly connected to a drill tooth 49, and a spiral piece 413 is provided on the inner side of the drill tube 47.

[0022] Specifically, through the observation port 46 and the scale 48, the measurement data of the sample core can be visually viewed to detect the thickness of the road, and through the spiral blade 413 provided inside the drill tube 47, a continuous spiral groove can be left on the outside of the drilled sample core.

[0023] In this embodiment, a connecting groove 410 is opened on the inner side of the connecting tube 45, and a rotating plate 411 is rotatably connected to the inner side of the connecting groove 410. The front end of the rotating plate 411 is fixedly connected to two groups of rotating rods 412, and the front ends of the two groups of rotating rods 412 are fixedly connected to the drill tube 47.

[0024] Specifically, the first electric push rod 43 pushes the moving plate 44 to move downward, and the motor 419 drives the rotating plate 411 to rotate, and drives the drill tube 47 to rotate under the connection of the rotating rod 412, and starts to drill holes in the road surface through the drill teeth 49.

[0025] In this embodiment, a slide groove 414 is provided at the upper end of the fixed plate 41, and a slider 415 is slidably connected to the inner side of the slide groove 414. The upper end of the slider 415 is fixedly connected to a connecting plate 416, and the rear end of the connecting plate 416 is fixedly connected to a second connecting block 417, and a second electric push rod 418 is provided at the front end of the second connecting block 417.

[0026] Specifically, when the movable plate 44 moves downward, the connecting plate 416 and the second connecting block 417 also move downward at the same time, so that the drill tube 47 and the connecting tube 45 gradually approach the road surface. During the process, the slider 415 slides in the slide groove 414, which can prevent the path of the drill tube 47 and the connecting tube 45 from being offset during the downward movement.

[0027] In this embodiment, the output end of the second electric push rod 418 is fixedly connected to the motor 419, the output end of the motor 419 is fixedly connected to the rotating plate 411, the outer side of the motor 419 is fixedly connected to the fixed cylinder 420, the outer side of the fixed cylinder 420 is provided with a slot 421, the inner side of the slot 421 is movably connected with a block 422, and the front end of the block 422 is fixedly connected to the movable plate 44.

[0028] Specifically, the second electric push rod 418 is started, and the output end of the second electric push rod 418 pushes the motor 419 to move toward the inside of the connecting tube 45, which can prompt the rotating rod 412 to move out of the inside of the connecting tube 45 with the sampled highway sample core. Through the block 422, a certain fixed support can be provided to the motor 419 when it rotates and outputs.

[0029] In this embodiment, the pushing mechanism 3 includes two groups of fixed blocks 1 31 and two groups of fixed blocks 2 32. The upper ends of the two groups of fixed blocks 1 31 are fixedly connected to the fixed plate 41, and the upper ends of the two groups of fixed blocks 2 32 are fixedly connected to the fixed plate 41. A rotating block 1 33 is rotatably connected between the two groups of fixed blocks 1 31 through a rotating shaft, and a rotating block 2 34 is rotatably connected between the two groups of fixed blocks 2 32 through a rotating shaft. Two groups of fixed blocks 3 35 are fixedly connected to the upper end of the main board 1, and a rotating block 3 36 is rotatably connected between the two groups of fixed blocks 35 through a rotating shaft. The outer side of the rotating block 36 is fixedly connected to a multi-stage cylinder 37, and the output end of the multi-stage cylinder 37 is fixedly connected to the rotating block 1 33. Two groups of fixed blocks 4 38 are fixedly connected to the upper end of the main board 1, and a rotating block 4 39 is rotatably connected between the two groups of fixed blocks 4 38 via a rotating shaft. A connecting rod 310 is fixedly connected to the outer side of the rotating block 4 39, and the upper end of the connecting rod 310 is fixedly connected to the rotating block 2 34, a support rod 311 is fixedly connected to one side of the connecting rod 310, and a rotating drum 312 is rotatably connected to the outer side of the support rod 311. Two groups of fixed blocks 5 313 ​​are fixedly connected to the upper end of the main board 1, and a rotating block 5 314 is rotatably connected between the two groups of fixed blocks 5 313 ​​via a rotating shaft, a single-stage cylinder 315 is fixedly connected to the outer side of the rotating block 5 314, and the output end of the single-stage cylinder 315 is fixedly connected to the rotating drum 312.

[0030] Specifically, the multi-stage cylinder 37 and the single-stage cylinder 315 are started, and the fixed plate 41 is pushed to move under the output of the multi-stage cylinder 37 and the single-stage cylinder 315, and the fixed plate 41 is flipped under the connection of the connecting rod 310, so that the measuring mechanism 4 is flipped from a horizontal state to a state perpendicular to the slope. During the process, the rotating block 1 33, the rotating block 2 34, the rotating block 36, the rotating block 4 39, and the rotating block 5 314 all rotate through the rotating shaft, and the rotating drum 312 rotates on the outside of the support rod 311.

[0031] In this embodiment, the fixing mechanism 6 includes two groups of mutually symmetrical support plates 61, the lower ends of the support plates 61 are fixedly connected to the main board 1, grooves are provided on the opposite sides of the two groups of support plates 61, and the inner sides of the grooves are movably connected with clamping columns 62 through springs, and the opposite sides of the two groups of support plates 61 are slidably connected with tooth plates 63, and a first opening 11 is provided on the surface of the main board 1, and the lower ends of the tooth plates 63 pass through the first opening 11 and are fixedly connected with multiple groups of clamping strips 64.

[0032] Specifically, the extension plate 7 is pushed forward, and the clamping column 62 will be squeezed into the groove under the action of the arc block 9. When the position of the extension plate 7 is rotated to be perpendicular to the main board 1, the clamping column 62 will bounce into the connecting hole 10 under the action of the spring to fix the extension plate 7.

[0033] In this embodiment, the rear end of the tooth plate 63 is meshed with a gear 65, one side of the gear 65 is fixedly connected to a mounting rod 66, one side of the mounting rod 66 passes through the support plate 61 and is fixedly connected to an extension plate 7, the mounting rod 66 is rotatably connected to the support plate 61, a handle 8 is commonly fixedly connected between the two groups of extension plates 7, an arc block 9 is fixedly connected to the front end of the extension plate 7, a connecting hole 10 is provided on the inner side of the extension plate 7, a clamping column 62 is movably connected to the inner side of the connecting hole 10, and a second opening 12 is provided on the surface of the main board 1.

[0034] Specifically, during the process of the extension plate 7 rotating forward, the gear 65 rotates simultaneously through the connection of the mounting rod 66, and is meshed with the toothed plate 63 to move downward and block the rear end of the roller 5. When the road surface at the uphill section being detected has anti-skid grooves, the clip 64 fits into the anti-skid grooves to increase stability.

[0035] When in use, hold the handle 8 and push the device to the designated detection position on the uphill road surface, then push the extension plate 7 forward, and the arc block 9 will first squeeze the clamping column 62 into the groove, and when the position of the extension plate 7 is rotated to be perpendicular to the main board 1, the clamping column 62 will be spring-loaded into the connecting hole 10 under the action of the spring to fix the extension plate 7. However, in the process of the extension plate 7 rotating forward, the gear 65 is rotated at the same time through the connection of the mounting rod 66, and is meshed with the toothed plate 63 to move downward and block the rear end of the roller 5. If the road surface at the uphill position to be detected is pressed with anti-skid grooves, the clamping strip 64 is just The multi-stage cylinder 37 and the single-stage cylinder 315 are then started simultaneously, and the fixed plate 41 is pushed to move under the output of the multi-stage cylinder 37 and the single-stage cylinder 315, and the fixed plate 41 is turned over under the connection of the connecting rod 310, so that the measuring mechanism 4 is turned over from a horizontal state to a state vertical to the slope surface, and then the first electric push rod 43 and the motor 419 are started simultaneously, the first electric push rod 43 pushes the moving plate 44 to move downward, and the connecting plate 416 and the second connecting block 417 also move downward at the same time, so that the drill tube 47 and the connecting tube 45 gradually approach the road surface, and the motor 419 drives the rotating plate 411 to rotate, and when the rotating plate 411 is turned over, the measuring mechanism 4 is turned over from a horizontal state to a state vertical to the slope surface. The rod 412 is connected to the drill tube 47 to drive the drill tube 47 to rotate, and the drill teeth 49 are used to start drilling the road surface. With the output of the first electric push rod 43, the drill tube 47 gradually penetrates into the inner side of the road, and the spiral piece 413 provided on the inner side of the drill tube 47 leaves a continuous spiral groove on the outer side of the drilled sample core. With the penetration of the drill tube 47 and the connecting tube 45, the depth of drilling into the road surface can be visually seen through the provided scale 48. After the drilling sample is completed, the first electric push rod 43 is retracted, the connecting tube 45 and the drill tube 47 are pulled out from the inner side of the road, and the spiral piece 413 is matched with the spiral groove, so that the drilled sample core can be pulled out together with the drill tube 47. The multi-stage cylinder 37 and the single-stage cylinder 315 are started again and retracted to make the fixed plate 41 return to its original position. Then, through the observation port 46 and the scale 48, the measurement data of the sample core can be visually viewed to detect the thickness of the road. Then, the second electric push rod 418 is started. The output end of the second electric push rod 418 pushes the motor 419 to move toward the inside of the connecting tube 45, and at the same time, the rotating rod 412 is prompted to move the sampled road sample core out of the inside of the connecting tube 45. The sample core and the spiral sheet 413 only need to be rotated in the opposite direction to remove the sample core from the drill tube 47, which is convenient for the staff to collect and carry out other processing.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thickness detection device for highway engineering, comprising a main board (1), characterized in that: The upper end of the main board (1) is fixedly connected to a support frame (2), a push mechanism (3) is provided on the inner side of the support frame (2), a measuring mechanism (4) for detecting the thickness of the road is provided on the upper end of the push mechanism (3), a roller (5) is provided on the lower end of the main board (1), a fixing mechanism (6) is provided on the rear end of the roller (5), and the measuring mechanism (4) comprises a fixing plate (41), two groups of first connecting blocks (42) are fixedly connected to the upper end of the fixing plate (41), first electric push rods (43) are provided at the front ends of the two groups of first connecting blocks (42), and the output ends of the two groups of first electric push rods (43) are fixedly connected to a moving plate (44), a connecting cylinder (45) is fixedly connected to the inner side of the moving plate (44), and a drill cylinder (47) is rotatably connected to the front end of the connecting cylinder (45).

2. A thickness detection device for highway engineering according to claim 1, characterized in that: The lower end of the fixing plate (41) is movably connected to the support frame (2); the connecting tube (45) is connected to the inner side of the drill tube (47); an observation port (46) is provided on the outer side of the connecting tube (45); scales (48) are provided on the surfaces of the connecting tube (45) and the drill tube (47); a drill tooth (49) is fixedly connected to the front end of the drill tube (47); and a spiral sheet (413) is provided on the inner side of the drill tube (47).

3. A thickness detection device for highway engineering according to claim 2, characterized in that: A connecting groove (410) is provided on the inner side of the connecting tube (45), a rotating plate (411) is rotatably connected to the inner side of the connecting groove (410), two groups of rotating rods (412) are fixedly connected to the front end of the rotating plate (411), and the front ends of the two groups of rotating rods (412) are fixedly connected to the drill tube (47).

4. A thickness detection device for highway engineering according to claim 3, characterized in that: A slide groove (414) is provided at the upper end of the fixed plate (41), a slider (415) is slidably connected to the inner side of the slide groove (414), a connecting plate (416) is fixedly connected to the upper end of the slider (415), a second connecting block (417) is fixedly connected to the rear end of the connecting plate (416), and a second electric push rod (418) is provided at the front end of the second connecting block (417).

5. A thickness detection device for highway engineering according to claim 4, characterized in that: The output end of the second electric push rod (418) is fixedly connected to a motor (419), the output end of the motor (419) is fixedly connected to the rotating plate (411), the outer side of the motor (419) is fixedly connected to a fixed cylinder (420), the outer side of the fixed cylinder (420) is provided with a slot (421), the inner side of the slot (421) is movably connected to a block (422), and the front end of the block (422) is fixedly connected to the moving plate (44).

6. A thickness detection device for highway engineering according to claim 1, characterized in that: The pushing mechanism (3) comprises two groups of fixed blocks (31) and two groups of fixed blocks (32). The upper ends of the two groups of fixed blocks (31) are fixedly connected to the fixed plate (41), and the upper ends of the two groups of fixed blocks (32) are fixedly connected to the fixed plate (41). A rotating block (33) is rotatably connected between the two groups of fixed blocks (31) via a rotating shaft, and a rotating block (34) is rotatably connected between the two groups of fixed blocks (32) via a rotating shaft.

7. A thickness detection device for highway engineering according to claim 6, characterized in that: Two groups of fixed blocks three (35) are fixedly connected to the upper end of the main board (1), and a rotating block three (36) is rotatably connected between the two groups of fixed blocks three (35) via a rotating shaft. The outer side of the rotating block three (36) is fixedly connected to a multi-stage cylinder (37), and the output end of the multi-stage cylinder (37) is fixedly connected to the rotating block one (33). Two groups of fixed blocks four (38) are fixedly connected to the upper end of the main board (1), and a rotating block four (39) is rotatably connected between the two groups of fixed blocks four (38) via a rotating shaft. A connecting rod (310) is fixedly connected to the outer side of the rotating block four (39), and the upper end of the connecting rod (310) is fixedly connected to the rotating block two (34).

8. A thickness detection device for highway engineering according to claim 7, characterized in that: A support rod (311) is fixedly connected to one side of the connecting rod (310), and a rotating drum (312) is rotatably connected to the outer side of the support rod (311). Two groups of fixed blocks (313) are fixedly connected to the upper end of the main board (1), and a rotating block (314) is rotatably connected between the two groups of fixed blocks (313) via a rotating shaft. A single-stage cylinder (315) is fixedly connected to the outer side of the rotating block (314), and an output end of the single-stage cylinder (315) is fixedly connected to the rotating drum (312).

9. A thickness detection device for highway engineering according to claim 1, characterized in that: The fixing mechanism (6) comprises two groups of mutually symmetrical support plates (61), the lower ends of the support plates (61) are fixedly connected to the main board (1), the opposite sides of the two groups of support plates (61) are provided with grooves, the inner sides of the grooves are movably connected with clamping columns (62) via springs, the opposite sides of the two groups of support plates (61) are slidably connected with tooth plates (63), the surface of the main board (1) is provided with a first opening (11), and the lower ends of the tooth plates (63) pass through the first opening (11) and are fixedly connected to a plurality of groups of clamping strips (64).

10. A thickness detection device for highway engineering according to claim 9, characterized in that: The rear end of the toothed plate (63) is meshed with a gear (65), one side of the gear (65) is fixedly connected to a mounting rod (66), one side of the mounting rod (66) passes through the support plate (61) and is fixedly connected to an extension plate (7), the mounting rod (66) is rotatably connected to the support plate (61), a handle (8) is fixedly connected between the two groups of extension plates (7), the front end of the extension plate (7) is fixedly connected to an arc block (9), a connecting hole (10) is provided on the inner side of the extension plate (7), the clamping column (62) is movably connected to the inner side of the connecting hole (10), and a second opening (12) is provided on the surface of the main board (1).

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