A pavement quality detection device for road construction

Abstract

The present invention relates to the technical field of road construction, and particularly relates to a pavement quality detection device for road construction, including a bearing plate. One side of the bearing plate is provided with a controller. A limiting groove is opened at the center of the top of the bearing plate, and a through hole penetrating the bearing plate is opened at the center of the bottom of the limiting groove. A detection device is installed inside the limiting groove; one end of the bearing plate is provided with a push plate, a displacement sensor is provided at the bottom of the push plate, an installation groove penetrating the push plate is opened at the center of the top of one side of the push plate, a hair dryer is detachably arranged inside the installation groove, and an air outlet pipe is detachably arranged at the output end of the hair dryer. The structure of the present invention is reasonable, which is convenient for moving while cleaning the sand and gravel on the road, ensuring the operation accuracy of the detection device, saving time and effort, and being convenient to use. At the same time, it can also adaptively adjust the height of the push plate, and elastically wrap and protect the detection device when the device is overturned, with strong adaptability, safety and stability.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, and in particular to a road surface quality detection device for road construction. Background Art

[0002] Road construction requires the testing of road surface flatness. Road surface flatness refers to the deviation value of the longitudinal bump amount of the road surface. Road surface flatness is an important indicator in road surface evaluation and road construction acceptance. It mainly reflects the flatness of the road surface longitudinal section profile curve. When the road surface longitudinal section profile curve is relatively smooth, it means that the road surface is relatively flat, or the flatness is relatively good. Otherwise, it means that the flatness is relatively poor. A good road surface requires good road surface flatness.

[0003] Chinese invention patent 2021114657644 provides a road construction quality detection device for highway supervision, including: a base, an inclined rod is installed on the base, a push rod is provided at the top of the inclined rod, a lead screw is installed under the push rod, a lead screw motor is provided for the lead screw, a lead screw slider is adapted to be installed on the lead screw, a workbench is provided for the lead screw slider, a rotating shaft is installed under the workbench, a sampling cylinder is provided at the bottom of the rotating shaft, a accommodating chamber is provided inside the sampling cylinder, a resistance plate is provided at the top of the accommodating chamber, an air chamber is provided above the accommodating chamber, a piston is provided for the resistance plate power, a plurality of clamping parts are provided for the air chamber power, the movement of the resistance plate drives the movement of the piston so that the clamping part is extruded, a partition is provided between the accommodating chamber and the air chamber, and an electromagnet is installed on the partition. The road surface detection device for road construction has the following problems: most of the detection devices do not have the function of cleaning the road surface, which makes it easy to be affected by sand and gravel scattered on the road surface during the detection process, and the error between the detection result and the actual result is large, which is very inconvenient to use.

[0004] At the same time, when encountering an uneven road surface, the push plate directly contacts the road surface, which will cause the movement of the device to be obstructed and reduce the accuracy of the device's road quality detection. At the same time, when the device rolls over, the detection equipment, as an important and vulnerable component, will cause damage to its internal structure when the device rolls over, causing significant structural damage and economic losses. Summary of the invention

[0005] The purpose of the present invention is to provide a road surface quality detection device for road construction, which solves the problem that most of the detection devices in the prior art do not have the function of cleaning the road surface, resulting in the detection process being easily affected by sand and gravel scattered on the road surface, and the error between the detection result and the actual result is large, which is very unfavorable for use, as well as the impact on the push plate when detecting the flatness of the road surface, and the damage to the internal detection equipment when the device rolls over.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A pavement quality detection device for road construction, including a bearing plate, a controller is provided on one side of the bearing plate, a limiting groove is opened at the center of the top of the bearing plate, a through hole penetrating the bearing plate is opened at the center of the bottom of the limiting groove, and a detection device is installed inside the limiting groove;

[0007] One end of the bearing plate is provided with a push plate, a displacement sensor is provided at the bottom of the push plate, an installation groove penetrating the push plate is opened at the center of the top of one side of the push plate, a hair dryer is detachably provided inside the installation groove, an air outlet pipe is detachably provided at the output end of the hair dryer, grooves are symmetrically opened on the inner walls of both sides of the air outlet pipe, a connecting air bag is provided on the inner wall of the groove, a wedge-shaped slider is provided on the other side of the connecting air bag, a plurality of air inlet ports are evenly arranged in an array on the top of the connecting air bag, and two shunt pipes are symmetrically communicated with the bottom surface of the air outlet pipe;

[0008] Two connecting frames are symmetrically provided on one side of the push plate, a lifting rod is provided on the other side of the connecting frame, a supporting air bag is provided at the bottom of the lifting rod, two groups of sleeves are symmetrically provided on one side of the bearing plate, a vertical groove is provided inside the sleeve, and the bottom of the supporting air bag is fixedly connected to the inner bottom of the vertical groove. The other end of the shunt pipe sequentially passes through the side walls of the push plate and the sleeve and is connected to one side of the supporting air bag;

[0009] The other side of the supporting air bag is provided with a pressure pipe through a solenoid valve, a barometric pressure sensor is provided inside the supporting air bag, two groups of horizontal grooves are symmetrically provided on the top of the bearing plate and on both sides of the detection device, a protection air bag is provided at the inner bottom of the horizontal groove, the other end of the pressure pipe passes through the sleeve and the bearing plate and is connected to the protection air bag, and a plurality of safety valves are evenly arranged in an array on the top of the protection air bag;

[0010] When passing over a raised road surface, the end of the air outlet pipe is blocked, and the gas in the air outlet pipe flows along the shunt pipe to the inside of the supporting air bag. The volume of the supporting air bag increases and drives the lifting rod and the push plate at the top to move upward; when the device overturns, the wedge-shaped slider stretches the connecting air bag and moves to the other side under its own weight. The gas in the air outlet pipe enters the connecting air bag along the air inlet port, causing the volume of the connecting air bag to increase. The port of the air outlet pipe is blocked and the internal gas reaches the supporting air bag along the shunt pipe. When the air pressure value in the supporting air bag is greater than the air pressure value detected by the barometric pressure sensor, the controller controls the solenoid valve to open, and the gas in the supporting air bag reaches the protection air bag along the pressure pipe. The volume of the protection air bag increases and wraps the peripheral side of the detection device.

[0011] The present invention has at least the following beneficial effects:

[0012] 1. By providing a hair dryer, an air outlet pipe, and a push plate in this application, the carrier plate can be moved by the moving wheels. During the moving process, the sand and gravel in front of the push plate can be blown away through the cooperation of the hair dryer and the air outlet pipe. When encountering a large stone, it can be pushed away through the cooperation of the push plate, avoiding the influence of sand and gravel on the operation of the detection equipment. The structure is reasonable, it is convenient to move and can clean the sand and gravel on the road at the same time, ensuring the operation accuracy of the detection equipment, saving time and effort, and being convenient to use.

[0013] 2. By providing an air outlet pipe, a shunt pipe, a support airbag, a lifting rod, and a push plate in this application, when encountering a road surface protrusion, the port of the air outlet pipe is blocked, and the gas enters the support airbag along the shunt pipe. The volume of the support airbag increases, driving the lifting rod and the push plate to move upward. The displacement sensor at the bottom of the push plate detects the displacement value, and the bottom of the push plate crosses the protruding road surface. This device can adaptively adjust the height of the push plate and the air outlet pipe during road surface detection, has strong adaptability, accurate detection, and good shock absorption and buffering effects.

[0014] 3. By providing a connecting airbag, a wedge-shaped slider, a support airbag, a protection airbag, and a safety valve in this application, when the device overturns, the gas in the air outlet pipe reaches the support airbag along the shunt pipe. The volume of the support airbag increases and the internal air pressure value is greater than the air pressure preset value set by the air pressure sensor. The controller controls the solenoid valve to open, and the excess gas in the support airbag reaches the protection airbag along the pressure pipe. The volume of the protection airbag increases to protect the detection equipment. This device can perform an all-round and dead-angle-free elastic wrapping of the detection equipment when it overturns, has strong protection, is safe and stable, has strong controllability, and good shock absorption and buffering effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the push plate of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the fixed bracket of the present invention;

[0019] Figure 4 It is a schematic structural diagram of the carrier plate of the present invention;

[0020] Figure 5 It is a left-side sectional view schematic diagram of the air outlet pipe in the second embodiment of the present invention;

[0021] Figure 6For Figure 5 Enlarged schematic view of part A in

[0022] Figure 7 Front view sectional view of the air outlet pipe and lifting rod of the present invention;

[0023] Figure 8 For Figure 7 Enlarged schematic view of part B in

[0024] Figure 9 Top view partial sectional view of the push plate in the second embodiment of the present invention.

[0025] In the figure: 1. Push plate; 2. Detection device; 3. Fixed bracket; 4. Bearing plate; 5. Moving wheel; 6. Air outlet pipe; 7. Docking pipe; 8. Hair dryer; 9. Installation groove; 10. Fixed plate; 11. Lifting rod; 13. Sleeve; 14. Limit block; 15. Connecting frame; 16. Extrusion spring; 17. Rotating handle; 18. Positioning screw; 19. Round rod; 20. Magnetic plate; 21. Limit groove; 22. Through hole; 23. Pushing frame; 24. Push handle; 25. Support frame; 26. Groove; 27. Connecting airbag; 28. Connecting spring; 29. Wedge-shaped slider; 30. Air inlet; 31. Exhaust slope; 32. Shunt pipe; 33. Moving groove; 34. Support airbag; 35. Pressure pipe; 36. Vertical groove; 37. Horizontal groove; 38. Protection airbag; 39. Safety valve. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] First embodiment

[0028] Referring to Figures 1-4 , a pavement quality detection device for road construction, including a bearing plate 4, a controller is provided on one side of the bearing plate 4, the controller electrically controls each electrical component, moving wheels 5 are installed at the four corners of the bottom of the bearing plate 4, a limit groove 21 is opened at the center of the top of the bearing plate 4, a through hole 22 penetrating the bearing plate 4 is opened at the center of the bottom of the limit groove 21, a detection device 2 is installed inside the limit groove 21, and the detection device 2 is used to detect the roughness, water permeability, flatness, etc. of the road surface.

[0029] A push plate 1 is provided at one end of the bearing plate 4, an installation groove 9 penetrating the push plate 1 is opened at the center of the top of one side of the push plate 1, a hair dryer 8 is detachably provided inside the installation groove 9, an air outlet pipe 6 is detachably provided at the output end of the hair dryer 8, and the hair dryer 8 is started to apply gas into the air outlet pipe 6 to blow the road surface impurities, thereby avoiding the influence on subsequent detection.

[0030] On one side of the push plate 1, two connecting frames 15 are symmetrically arranged. One side of the connecting frame 15 is bolted and fixedly connected to the side wall of the push plate 1. On the other side of the connecting frame 15, a lifting rod 11 is provided. At the bottom of the lifting rod 11, a sleeve 13 connected to the side wall of the bearing plate 4 is slidably arranged. Specifically, through the settings of the hair dryer 8, the air outlet pipe 6 and the push plate 1, the bearing plate 4 can be moved through the moving wheels 5. During the moving process, the sand and gravel in front of the push plate 1 can be blown away through the cooperation of the hair dryer 8 and the air outlet pipe 6. When encountering a larger stone, it can be pushed away through the cooperation of the push plate 1, avoiding the influence of sand and gravel on the operation of the detection device 2. The structure is reasonable, which is convenient for moving and can clean the sand and gravel on the road at the same time, ensuring the operation accuracy of the detection device 2, saving time and effort and being convenient to use.

[0031] On both sides of the bottom of the hair dryer 8, fixing plates 10 bolted to the side wall of the push plate 1 are provided. Specifically, through the setting of the fixing plates 10, it is convenient to install and disassemble the hair dryer 8.

[0032] One end of the air outlet pipe 6 is communicated with a docking pipe 7 adapted and clamped to the output end of the hair dryer 8. Specifically, through the setting of the docking pipe 7, it is convenient to connect the air outlet pipe 6.

[0033] On the top of the detection device 2, a number of fixing brackets 3 are provided. Both bottom ends on both sides of the fixing brackets 3 are bolted and fixedly connected to the top of the bearing plate 4. On both sides of the top of the fixing brackets 3, positioning screws 18 vertically arranged with one end passing through the fixing brackets 3 through screw sleeves are provided. The extended ends of the positioning screws 18 are in contact with the top of the detection device 2. At the top end of the positioning screws 18, turning handles 17 are provided. Specifically, through the setting of the fixing brackets 3, it is convenient to limit the detection device 2.

[0034] At the center of the bottom of the positioning screw 18, a sliding groove is opened. Inside the sliding groove, a round rod 19 is slidably arranged. One end of the round rod 19 is elastically connected to the inner wall of the sliding groove through a compression spring 16, and the other end is rotatably provided with a magnetic plate 20. Specifically, through the settings of the compression spring 16 and the magnetic plate 20, elastic buffering is facilitated.

[0035] On one side of the top of the bearing plate 4, through a support frame 25, a push frame 23 is provided. Inside the push frame 23, a horizontally arranged push handle 24 is provided. Specifically, through the setting of the push handle 24, it is convenient to push the bearing plate 4.

[0036] During use, the push plate 1 is installed at one end of the bearing plate 4 through the cooperation of the connecting frame 15 and the lifting rod 11. The hair dryer 8 is easily installed on the push plate 1 through the cooperation of the installation groove 9 and the fixing plate 10. Then, the air outlet pipe 6 is connected to the output end of the hair dryer 8 through the docking pipe 7. Pull the push handle 24, and the bearing plate 4 can be moved through the moving wheels 5. During the moving process, the sand and gravel in front of the push plate 1 can be blown away through the cooperation of the hair dryer 8 and the air outlet pipe 6. When encountering a large stone, it can be pushed away through the cooperation of the push plate 1, avoiding the influence of sand and gravel on the operation of the detection device 2. The structure is reasonable, easy to move, and can clean the sand and gravel on the road at the same time, ensuring the operation accuracy of the detection device 2, saving time and effort, and being easy to use. Through the cooperation of the fixed bracket 3, the positioning screw 18, the compression spring 16 and the round rod 19, the detection device 2 is easily limited in the limiting groove 21, avoiding the displacement and falling of the detection device 2.

[0037] Second Embodiment

[0038] Refer to Figures 5-9 As shown in the figure, when the pavement quality detection device for road construction is actually in use, if it encounters uneven pavement or large stone obstacles, the direct hard contact between the push plate 1 and them will cause impact, which will affect the forward movement and even damage the device. At the same time, when only relying on the detection device 2 to detect the pavement quality, the detection accuracy is low, the detection contingency is large, and it does not have pre-detection and reference properties; and when the device tilts during driving, the detection device 2 will be damaged structurally due to the lack of elastic protection. To solve the above problems and improve the elastic passing performance of the device and the protection of the detection device 2, the pavement quality detection device for road construction further includes: a displacement sensor is provided at the bottom of the push plate 1. Through the displacement sensor at the bottom of the push plate 1, the flatness of the pavement can be effectively pre-detected, and it can assist the detection device 2 to improve the detection ability, avoiding the problems of missed detection and misdetection during the detection process of the detection device 2.

[0039] Grooves 26 are symmetrically formed on the inner walls on both sides of the air outlet pipe 6. A connecting airbag 27 is provided on one inner wall of the groove 26, and a wedge-shaped slider 29 is provided on the other side of the connecting airbag 27. The wedge-shaped slider 29 is inside the groove 26. Under normal conditions, the wedge-shaped slider 29 does not move. A plurality of groups of air inlets 30 are evenly arranged at the top of the connecting airbag 27. When the wedge-shaped slider 29 moves, the air inlets 30 at the top of the connecting airbag 27 are communicated with the inside of the air outlet pipe 6. Then, the gas in the air outlet pipe 6 reaches the inside of the connecting airbag 27 along the air inlets 30 and drives the volume of the connecting airbag 27 to continuously increase. Further, the wedge-shaped slider 29 continuously moves towards the other end. Two shunt pipes 32 are symmetrically communicated with the bottom surface of the air outlet pipe 6. The shunt pipes 32 mainly play a role in shunting, that is, when the port of the air outlet pipe 6 is partially blocked, a part of the air is discharged along the shunt pipes 32.

[0040] A moving groove 33 is formed in the side wall of the air outlet pipe 6. The two side walls of the wedge-shaped slider 29 are slidably connected to the moving groove 33. Through the moving groove 33, the movement of the wedge-shaped slider 29 can be effectively limited, avoiding deviation during the movement of the wedge-shaped slider 29 and affecting subsequent use.

[0041] A connecting spring 28 is arranged inside the connecting airbag 27. One end of the connecting spring 28 is fixedly connected to the side wall of the groove 26, and the other end of the connecting spring 28 is fixedly connected to the side surface of the wedge-shaped slider 29. With the help of the connecting spring 28, the elastic performance of the wedge-shaped slider 29 can be improved. At the same time, when the air outlet pipe 6 returns to its original position, the wedge-shaped slider 29 that has slid out can be driven to return to its original position by the connecting spring 28 and continue the subsequent work.

[0042] Exhaust inclined surfaces 31 are arranged at the bottom of the inner walls on both sides of the air outlet pipe 6. A wedge-shaped surface is arranged at the bottom of one side of the wedge-shaped slider 29, and the wedge-shaped surface is matched with the exhaust inclined surface 31. With the help of the wedge-shaped surface and the exhaust inclined surface 31, it can effectively ensure that the wind discharged along the air outlet pipe 6 blows the ground impurities to both sides, avoiding the influence of impurities on the subsequent road surface quality detection.

[0043] A support airbag 34 is arranged at the bottom of the lifting rod 11. Two groups of sleeves 13 are symmetrically arranged on one side of the bearing plate 4. A vertical groove 36 is arranged inside the sleeve 13. The bottom of the support airbag 34 is fixedly connected to the inner bottom of the vertical groove 36. The other end of the shunt pipe 32 sequentially passes through the side walls of the push plate 1 and the sleeve 13 and is connected to one side of the support airbag 34. Then, when the gas volume flowing in the shunt pipe 32 increases, the gas in the shunt pipe 32 flows into the support airbag 34, and the volume of the support airbag 34 increases, thereby driving the lifting rod 11 at the top to move upward. When the lifting rod 11 moves upward, it drives the push plate 1 and the air outlet pipe 6 to move upward through the connecting frame 15, adaptively adjusting the distance from the road surface and improving the passing performance of the push plate 1.

[0044] A plurality of groups of limit blocks 14 are evenly arranged on the outer surface of the lifting rod 11. A blocking ring matching the limit blocks 14 is arranged on the top side wall of the groove 26. A friction pad is arranged on the inner wall of the blocking ring. The cooperation between the blocking ring and the limit blocks 14 prevents the lifting rod 11 from rising too high and disengaging from the sleeve 13. The friction pad is slidably connected to the side wall of the lifting rod 11, improving the stability and anti-slip performance of the movement of the lifting rod 11.

[0045] On the other side of the support airbag 34, a pressure pipe 35 is provided through a solenoid valve. An air pressure sensor is provided inside the support airbag 34. When the gas pressure inside the support airbag 34 is greater than the preset air pressure value set by the air pressure sensor, the controller controls the solenoid valve to open, and the gas inside the support airbag 34 flows into the pressure pipe 35. On the top of the carrier plate 4 and symmetrically on both sides of the detection device 2, two groups of transverse grooves 37 are provided. A protective airbag 38 is provided at the inner bottom of the transverse groove 37. The other end of the pressure pipe 35 passes through the sleeve 13 and the carrier plate 4 and is connected to the protective airbag 38. Then the gas in the pressure pipe 35 flows into the protective airbag 38. The volume of the protective airbag 38 increases and pops up upward. The protective airbag 38 wraps and protects both sides of the detection device 2, improving the safety and wrapping property of the detection device 2 in dangerous situations. A plurality of groups of safety valves 39 are evenly arranged in an array on the top of the protective airbag 38. The safety valve 39 is provided with a safety pressure value. When the air pressure value inside the protective airbag 38 is greater than the safety pressure value of the safety valve 39, the safety valve 39 opens, and the gas inside the protective airbag 38 is discharged along the safety valve 39, thereby effectively ensuring the pressure relief ability of the protective airbag 38 and avoiding damage to the protective airbag 38 caused by the continuous operation of the hair dryer 8.

[0046] An electromagnet is provided at the inner top of the chute. The magnetism of the magnetic plate 20 is the same as that directly opposite to the electromagnet. Then when the pressure value detected by the air pressure sensor is greater than the set pressure preset value, the controller controls the electromagnet to be energized to have magnetism. Then, by means of the magnetic repulsion force of the electromagnet on the magnetic plate 20, the magnetic plate 20 is driven to stretch and squeeze the spring 16 and move downward to squeeze and contact the top of the detection device 2, further improving the wrapping property of the top of the detection device 2 and cooperatively using the protective airbag 38 on the circumferential side to further elastically protect the detection device 2.

[0047] During use, as can be seen from the first embodiment, when the carrier plate 4 moves with the moving wheels 5, the hair dryer 8 starts to exhaust air into the air outlet pipe 6 through the docking pipe 7, and the air outlet pipe 6 blows the ground impurities by means of the gas.

[0048] At this time, since the air outlet pipe 6 is still in a stable horizontal placement stage, under the action of the elastic force of the connecting spring 28, the wedge-shaped slider 29 is located inside the groove 26 and does not move, and the wedge-shaped slider 29 is flush with the inclined surface of the exhaust inclined surface 31. Then, by means of the inclined surfaces of the exhaust inclined surface 31 and the wedge-shaped slider 29, the gas in the air outlet pipe 6 blows the ground impurities to both sides, effectively avoiding the influence of the ground impurities on the subsequent road quality detection. At the same time, a part of the gas in the air outlet pipe 6 flows through the shunt pipe 32 to the support airbag 34. The volume of the support airbag 34 increases, thereby driving the lifting rod 11 to move upward. The upward movement of the lifting rod 11 drives the push plate 1 to move upward through the connecting frame 15. The upward movement of the push plate 1 drives the air outlet pipe 6 to move upward by a certain height. At this time, the air outlet pipe 6 has the best effect of blowing impurities on the road surface, and a certain gap is formed between the push plate 1 and the top of the road surface to ensure the pushing and recycling effect of the push plate 1 on the road surface impurities and the passing performance of the push plate 1.

[0049] When encountering an uneven road surface, assuming there is a bump on the road surface, the air outlet of the air outlet pipe 6 is inclined and first approaches the position of the road surface bump. At this time, the displacement of the port of the air outlet pipe 6 compared to the flat end of the road surface at the bump end of the road surface decreases, so the air outlet of the gas at the port of the air outlet pipe 6 is blocked. Then, part of the gas in the air outlet pipe 6 is discharged along the shunt pipe 32. This gas continuously converges into the inside of the support airbag 34 along the shunt pipe 32. The volume inside the support airbag 34 increases, thereby driving the lifting rod 11 at the top to move upward. When the lifting rod 11 moves upward, it drives the push plate 1 to move upward through the connecting frame 15. When the push plate 1 moves upward, it drives the air outlet pipe 6 at the other end of the hair dryer 8 to move upward. The displacement value detected by the displacement sensor increases, thereby detecting the unevenness of the road surface in advance and providing a pre-detection reminder for the detection of the subsequent detection device 2, avoiding problems such as missed detection or misdetection of the detection device 2 when encountering the bumpy road surface. And by means of the elastic connection of the support airbag 34, the elastic connection and passability of the push plate 1 when passing over the bumpy road surface are further improved, avoiding problems such as jerks in the movement of the device or even forward tipping caused by the direct contact between the push plate 1 and the bump.

[0050] In particular, the displacement between the air outlet pipe 6, the push plate 1 and the bearing plate 4 matches the traveling speed of the moving wheel 5. Therefore, when the air outlet pipe 6 is partially blocked by the bumpy road surface at the port and drives the push plate 1 to move upward with the help of the support airbag 34, the push plate 1 can move to the position of the bump. And when the push rod 1 moves up to the highest end, the bottom height of the push plate 1 is greater than the position of the bump, thereby ensuring that the push rod 1 quickly and stably passes over the bumpy road surface. When the end of the air outlet pipe 6 passes over the bumpy road surface and the subsequent road surface resumes flatness, the gas discharged along the end of the air outlet pipe 6 increases. Then, under the pressure of the lifting rod 11 at the top, the gas inside the support airbag 34 flows back into the air outlet pipe 6 along the shunt pipe 32. The push plate 1 moves down to a suitable height for detection again. The displacement sensor moves down accordingly and detects the downward displacement value, thereby obtaining the bump situation of the road surface distance and reminding the detection of the detection device 2 to ensure the stability and accuracy of the detection device 2 during detection at this place.

[0051] Similarly, when the road surface encounters a depression, the distance between the end of the air outlet pipe 6 and the bottom of the depression increases, so the air discharge volume at the end of the air outlet pipe 6 increases. Then, the lifting rod 11 presses down on the support airbag 34. Part of the gas in the support airbag 34 flows back into the air outlet pipe 6 along the shunt pipe 32 and is discharged. The support airbag 34 drives the lifting rod 11 to descend, and the lifting rod 11 drives the push plate 1 to descend. The displacement sensor detects the downward displacement value. At the same time, the push plate 1 still maintains a certain height from the ground, thereby ensuring the pushing effect of the push plate 1 on the impurities on the road surface and avoiding the impurities on one side of the push plate 1 falling into the road surface depression position and affecting the detection of the subsequent detection device 2.

[0052] During continuous movement, especially when the device tilts due to various uncertain factors during movement on the road surface, at this time, the bearing plate 4 drives the push plate 1 and the air outlet pipe 6 at the end to tilt to one side. If the bearing plate 4 directly overturns and contacts the ground, the detection device 2 on its top will be damaged by impact, resulting in significant economic and safety losses.

[0053] When the air outlet pipe 6 tilts to one side, the wedge-shaped slider 29 at the top of the air outlet pipe 6 in the tilting direction will move along the groove 26 under its own weight and stretch the connecting spring 28 to move to the other end. When the wedge-shaped slider 29 moves, it drives the connecting airbag 27 to move synchronously into the air outlet pipe 6. At this time, the air inlet 30 at the top of the connecting airbag 27 opens and faces the inside of the air outlet pipe 6. The gas in the air outlet pipe 6 enters the connecting airbag 27 along the air inlet 30 and drives the volume of the connecting airbag 27 to continuously increase. When the volume of the connecting airbag 27 increases, it drives the wedge-shaped slider 29 at the end to continuously move to the other end and slide into the other groove 26 for matching and limiting.

[0054] At this time, the air outlet end of the air outlet pipe 6 is blocked by the connecting airbag 27, and the air blower 8 continues to work. Then, the gas in the air outlet pipe 6 continuously converges into the support airbag 34 along the shunt pipe 32. The volume of the support airbag 34 continuously increases and drives the lifting rod 11 at the top to continuously move upward. When the lifting rod 11 moves upward, it drives the push plate 1 and the air outlet pipe 6 at the end to move upward through the connecting frame 15. Then, the lifting rod 11 and the push plate 1 can clamp and protect one side of the bearing plate 4, and the elastic connection of the support airbag 34 at the bottom is used to improve the shock absorption and buffering effect of the push plate 1, avoiding hard collision when the push plate 1 and the air outlet pipe 6 contact the ground and causing damage to their structures, especially when the air blower 8 on the top of the push plate 1 is impacted and its structure is damaged.

[0055] When the lifting rod 11 rises to the maximum value as the volume of the support airbag 34 increases, the upward movement of the lifting rod 11 is limited by the blocking ring on the inner wall of the vertical groove 36 with the help of the limiting block 14. At this time, the air blower 8 is still working continuously, and the generated gas still continuously reaches the support airbag 34 through the air outlet pipe 6 and the shunt pipe 32. The air pressure in the support airbag 34 continuously increases. When the air pressure sensor detects that the air pressure value in the support airbag 34 is greater than the set air pressure preset value, the controller controls the solenoid valve to open. Then, the gas in the support airbag 34 enters the pressure pipe 35 along the solenoid valve and flows through the pressure pipe 35 into the protection airbag 38. The protection airbag 38 continuously increases in volume in the horizontal groove 37 and its top continuously moves upward to wrap and protect the peripheral side of the detection device 2, further improving the elastic wrapping of the detection device 2 and ensuring the safety and protection of the detection device 2 when the device overturns.

[0056] Meanwhile, when the air pressure value in the airbag 38 continues to increase as the hair dryer 8 keeps working, and when the air pressure value in the airbag 38 is greater than the safety pressure value set by the safety valve 39, the safety valve 39 opens and discharges the air pressure in the airbag 38 to ensure the safety of the airbag 38. Then the whole device remains in a stable state, that is, the connecting airbag 27 blocks the end of the air outlet pipe 6, the supporting airbag 34 has the largest volume and drives the lifting rod 11 and the push plate 1 to rise to the maximum height, and the protective airbag 39 has the largest volume and its top rises to the maximum height, realizing the all-round and dead-angle-free elastic wrapping protection of the detection device 2, the push plate 1, the air outlet pipe 6 and the hair dryer 8, and improving the safety and stability of the device during rollover.

[0057] Particularly, when the air pressure value detected by the air pressure sensor is greater than the set pressure preset value, the controller controls the electromagnet to be energized and have magnetism. Then the electromagnet drives the magnetic plate 20 to stretch and squeeze the spring 16 and move towards the detection device 2 by means of the magnetic repulsion force with the magnetic plate 20. The bottom of the magnetic plate 20 squeezes and contacts the top of the detection device 2, thus preventing the clamping of the detection device 2 and the bearing plate 4 from loosening during the rollover of the device, causing it to shake with the bearing plate 4 and finally damaging the internal structure of the detection device 2.

[0058] When the rollover of the device ends and the device is righted again, at this time, since the air outlet pipe 6 returns to horizontal again, the wedge-shaped slider 29 in the air outlet pipe 6 returns to horizontal inside synchronously. Then, under the elastic force of the connecting spring 28, the wedge-shaped slider 29 is driven to move in the reverse direction and move back into the corresponding groove 26 again. When the connecting airbag 27 is squeezed by the wedge-shaped slider 29 and is located inside the groove 26, the gas in the connecting airbag 27 is continuously squeezed and discharged in the reverse direction along the air inlet 30. The air outlet pipe 6 resumes ventilation again. Then the air pressure in the protective airbag 38 flows back into the supporting airbag 34 along the pressure pipe 35. The gas in the supporting airbag 34 continuously flows back into the air outlet pipe 6 and is discharged, and the controller controls the solenoid valve to close. The whole device resumes the initial state and resumes working.

[0059] This device can not only adaptively adjust the heights of the push plate 1 and the air outlet pipe 6 during the road surface quality detection, with strong adaptability and accurate detection. At the same time, when the device rolls over, it can provide all-round and dead-angle-free elastic wrapping for the detection device 2, with strong protection, safety and stability, strong controllability, and good shock absorption and buffering effects.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pavement quality detection device for road construction, including a bearing plate, and a controller is provided on one side of the bearing plate, characterized in that, A limiting groove is provided at the center of the top of the bearing plate. A through hole penetrating the bearing plate is provided at the center of the bottom of the limiting groove. A detection device is installed inside the limiting groove; One end of the bearing plate is provided with a push plate. A displacement sensor is provided at the bottom of the push plate. An installation groove penetrating the push plate is provided at the center of the top of one side of the push plate. A hair dryer is detachably provided inside the installation groove. An air outlet pipe is detachably provided at the output end of the hair dryer. Grooves are symmetrically provided on the inner walls of both sides of the air outlet pipe. A connecting airbag is provided on the inner wall of the groove. A wedge-shaped slider is provided on the other side of the connecting airbag. A plurality of air inlets are evenly arranged in an array on the top of the connecting airbag. Two shunt pipes are symmetrically communicated with the bottom surface of the air outlet pipe; Two connecting frames are symmetrically provided on one side of the push plate. A lifting rod is provided on the other side of the connecting frame. A supporting airbag is provided at the bottom of the lifting rod. Two groups of sleeves are symmetrically provided on one side of the bearing plate. A vertical groove is provided inside the sleeve. The bottom of the supporting airbag is fixedly connected to the inner bottom of the vertical groove. The other end of the shunt pipe sequentially passes through the side walls of the push plate and the sleeve and is connected to one side of the supporting airbag; A pressure pipe is provided on the other side of the supporting airbag through a solenoid valve. A barometric pressure sensor is provided inside the supporting airbag. Two groups of horizontal grooves are symmetrically provided on the top of the bearing plate and on both sides of the detection device. A protection airbag is provided at the inner bottom of the horizontal groove. The other end of the pressure pipe passes through the sleeve and the bearing plate and is connected to the protection airbag. A plurality of safety valves are evenly arranged in an array on the top of the protection airbag; When passing over a raised road surface, the end of the air outlet pipe is blocked, and the gas in the air outlet pipe flows along the shunt pipe to the supporting airbag. The volume of the supporting airbag increases and drives the lifting rod and the push plate at the top to move upward; when the device is overturned, the wedge-shaped slider stretches the connecting airbag and moves to the other side under the action of its own weight. The gas in the air outlet pipe enters the connecting airbag along the air inlet, causing the volume of the connecting airbag to increase. The port of the air outlet pipe is blocked and the internal gas reaches the supporting airbag along the shunt pipe. When the air pressure value in the supporting airbag is greater than the air pressure value detected by the barometric pressure sensor, the controller controls the solenoid valve to open, and the gas in the supporting airbag reaches the protection airbag along the pressure pipe. The volume of the protection airbag increases and wraps around the peripheral side of the detection device.

2. The pavement quality detection device for road construction according to claim 1, characterized in that, The controller electrically controls each electrical component. Fixing plates fixedly connected to the side wall of the push plate are provided on both sides of the bottom of the hair dryer. One end of the air outlet pipe is communicated with a docking pipe adapted to and clamped with the output end of the hair dryer.

3. A pavement quality detection device for road construction according to claim 1, characterized in that, The safety valve is provided with a safety pressure value. When the air pressure value in the protection airbag is greater than the safety pressure value of the safety valve, the safety valve opens, and the gas in the protection airbag is discharged along the safety valve.

4. A pavement quality detection device for road construction according to claim 1, characterized in that, A plurality of fixing brackets are provided on the top of the detection device. The bottom ends of both sides of the fixing bracket are bolted and fixed to the top of the bearing plate. Positioning screws vertically provided on both sides of the top of the fixing bracket penetrate the fixing bracket through a screw sleeve at one end. The extended end of the positioning screw fits against the top of the detection device. A turning handle is provided at the top end of the positioning screw.

5. The pavement quality detection device for road construction according to claim 4, characterized in that, A chute is provided at the bottom center of the positioning screw. An electromagnet is provided at the inner top of the chute. A round rod is slidably provided inside the chute. One end of the round rod is elastically connected to the inner wall of the chute through a compression spring. A magnetic plate is rotatably provided at the other end of the round rod. The magnetic plate has the same magnetic property as the electromagnet on the opposite side.

6. A pavement quality detection device for road construction according to claim 1, characterized in that, A push frame is provided on one side of the top of the bearing plate through a support frame. A horizontally arranged push handle is provided inside the push frame. Moving wheels are installed at the four corners of the bottom of the bearing plate.

7. A pavement quality detection device for road construction according to claim 1, characterized in that, A connecting spring is provided inside the connecting airbag. One end of the connecting spring is fixedly connected to the side wall of the groove. The other end of the connecting spring is fixedly connected to the side surface of the wedge-shaped slider.

8. A pavement quality detection device for road construction according to claim 1, characterized in that, A plurality of groups of limit blocks are evenly arranged on the outer surface of the lifting rod. A blocking ring matching the limit blocks is provided on the top side wall of the vertical groove. A friction pad is provided on the inner wall of the blocking ring.

9. A pavement quality detection device for road construction according to claim 1, characterized in that, Exhaust inclined surfaces are provided at the bottom of the inner side walls of the air outlet pipe. A wedge-shaped surface is provided at the bottom of one side of the wedge-shaped slider. The wedge-shaped surface is matched with the exhaust inclined surface.

10. A pavement quality detection device for road construction according to claim 1, characterized in that, A moving groove is provided on the side wall of the air outlet pipe. The side walls of the wedge-shaped slider are slidably connected to the moving groove.

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