A subgrade construction method for measuring compaction degree of water grassland at high altitude in real time

Abstract

The application belongs to the technical field of high-altitude roadbed engineering, and particularly relates to a roadbed construction method for real-time measurement of water grassland compactness in high-altitude areas. The front end of the machine body of a road roller is provided with a connecting block, the front end side surface of the connecting block is fixedly connected with a mounting frame, the inner surface of the mounting frame is rotationally connected with a road roller roller with a tooth block through a bearing rod, the lower surface of the connecting block is provided with a marking mechanism, the surface of the road roller is provided with a pressure detection mechanism, and a buffer mechanism is arranged between the connecting block and the mounting frame. The roadbed construction method for real-time measurement of water grassland compactness in high-altitude areas, through the rotation of the road roller, makes the road roller plate synchronously rotate to contact the water grassland surface for rolling, according to the ground relaxation, the extension distance of the extension rod in the extension hole can be judged, so that the compactness of the rolled ground can be detected, the relationship between the rolling frequency and the rolling effect is analyzed, the best rolling frequency is obtained, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of roadbed engineering technology in high-altitude areas, and in particular to a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas. Background Technology

[0002] The following potential defects may exist in the construction of roadbeds for grasslands in high-altitude areas: Geological instability: High-altitude areas have complex geological conditions, potentially including loose soil, exposed rocks, and landslides. If the geological conditions are not fully understood and assessed during construction, and corresponding geological engineering measures are not taken, roadbed instability may occur, increasing project risks and safety hazards. Hydrological issues: High-altitude areas have abundant rainfall and snowmelt water sources, easily forming water accumulation and grassland wetlands. Without a properly planned and designed drainage system, the roadbed may accumulate large amounts of water, leading to softening, settlement, and even mudslides. Insufficient cold resistance: High-altitude areas have low temperatures, requiring consideration of the cold resistance of the roadbed and related structures. If the selected soil or materials have poor cold resistance, or if construction techniques are inappropriate, it may lead to roadbed damage, cracking, or even overall instability.

[0003] Therefore, compacting the roadbed is of paramount importance. However, existing road rollers do not perform compaction tests on the roadbed surface after compaction, resulting in substandard road surface compaction and subsequent loosening and cracking of the road surface. Therefore, the present invention solves the above-mentioned technical problems. Summary of the Invention

[0004] Based on the existing technical problem that road rollers do not perform compaction tests on the roadbed surface after compaction, resulting in substandard road surface compaction and subsequent road surface loosening and cracking, this invention proposes a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas.

[0005] This invention proposes a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas. The roadbed construction method includes:

[0006] Soil investigation and analysis: Before carrying out subgrade construction, a detailed soil investigation and analysis are conducted, and appropriate construction methods are selected based on the analysis results.

[0007] Route design and planning: Design a suitable route and roadbed layout scheme based on local topography, hydrological characteristics and soil conditions.

[0008] Soil improvement: Based on the results of the soil survey, if the soil conditions are not ideal, consider soil improvement measures such as adding organic matter, applying minerals and fertilizers to improve soil fertility and stability.

[0009] Compaction measures: Select appropriate road rollers for roadbed compaction, and arrange the construction sequence and number of compaction cycles reasonably according to soil type and compaction requirements.

[0010] Preferably, the front end of the roller body is provided with a connecting block, and a mounting frame is fixedly connected to one side surface of the front end of the connecting block. A roller with toothed blocks on its surface is rotatably connected to the inner surface of the mounting frame through a bearing rod. A marking mechanism is provided on the lower surface of the connecting block, a pressure detection mechanism is provided on the surface of the roller, and a buffer mechanism is provided between the connecting block and the mounting frame.

[0011] The pressure detection mechanism detects the compaction degree of the road surface as the road roller compacts the road surface.

[0012] The buffer mechanism buffers the vibration generated by the mounting frame when it is rolling the road surface.

[0013] The marking mechanism marks the compacted road surface in different ways.

[0014] Preferably, the pressure detection mechanism includes a vibration chamber inside the roller, the inner wall of the vibration chamber is rotatably connected to a rotating shaft via a bearing, the outer surface of the rotating shaft is fixedly fitted with eccentric wheels at uniform intervals, and the inner wall of the vibration chamber is fixedly connected with vibrating blocks in a ring array, the outer surface of the vibrating blocks slidingly contacting the outer surface of the eccentric wheels.

[0015] The above technical solution aims to compact the improved soil by controlling the road roller to travel along the route and pushing the roller to rotate forward. During the forward movement, the rotating shaft drives the spaced eccentric wheels to rotate axially, causing the convex circular surface of the eccentric wheel to strike the outer surface of the vibrating block, making the roller vibrate at a high frequency, thereby compacting the road surface.

[0016] Preferably, the pressure detection mechanism further includes a road roller plate arranged in a ring array on the outer surface of the road roller, a telescopic cavity is provided inside the vibrating block, and telescopic holes are provided through the inner wall of the telescopic cavity and the inner wall of the vibration cavity in a ring array. A telescopic rod is slidably telescopically extended and retracted on the inner wall of the telescopic hole. One side surface of the telescopic rod is hinged to one side surface of the road roller plate through a hinged lug plate. Detection probes are fixedly installed on the lower surface of the road roller plate at uniform intervals.

[0017] The above technical solution aims to detect the compaction degree of grassland in high-altitude areas, analyze the relationship between the number of compaction cycles and the compaction effect, obtain the optimal number of compaction cycles, and improve construction efficiency. As the roller rotates, the compaction plate rotates synchronously and contacts the grassland surface. Based on the ground relaxation, the extension distance of the telescopic rods in the telescopic holes can be determined, thus detecting the compaction degree of the compacted ground. To ensure better contact between the compaction plate and the ground, the compaction plate and multiple telescopic rods are hinged via hinged lugs, allowing the compaction plate angle to self-adjust as the roller rotates. To detect the moisture content of grassland in high-altitude areas, a humidity sensor is installed inside the compaction plate, with its detection probe extending to the outside of the compaction plate. When the outer surface of the compaction plate contacts the grassland, the detection probe can insert into the grassland to detect the moisture content.

[0018] Preferably, the pressure detection mechanism further includes a return spring fixedly sleeved on the outer surface of the telescopic rod, the free end of the return spring being fixedly connected to the inner wall of the telescopic hole, and a conical connecting sleeve being fixedly connected to the inner wall of the telescopic cavity, the connecting sleeve being fixedly sleeved on the upper outer surface of the telescopic rod.

[0019] Through the above technical solution, in order to reset the extension and retraction of the telescopic pole, so as to facilitate the cyclic detection of the compaction degree of the road section, the tension of the reset spring can make the road plate better press against the ground when the telescopic pole extends and retracts, and the road plate is reset when it rotates upward. The connection between the telescopic pole and the road plate can be reinforced by the connecting sleeve, so that it can be adjusted for extension and retraction.

[0020] Preferably, the pressure detection mechanism further includes a pressure detection plate fixedly installed on the inner wall of the telescopic cavity, a piezoelectric pressure sensor installed inside the pressure detection plate, a conical block fixedly connected to the upper surface of the telescopic rod, the upper surface of the conical block slidingly contacting the lower surface of the pressure detection plate, a buffer rubber installed on the upper surface of the pressure detection plate, a movable cavity opened inside the buffer rubber, and a dense array of vibrating balls placed inside the movable cavity.

[0021] Through the above technical solution, the road roller is pressed onto the road surface, causing deformation of the telescopic rod. In order to quantify the deformation of the telescopic rod and form a waveform diagram of the pressure on the road roller to determine whether the compaction degree of the road section meets the specifications, the road roller is subjected to pressure, causing the telescopic rod to extend and retract into the telescopic cavity. The conical block on one side of the telescopic rod presses against the pressure detection plate, thereby quantifying the pressure. In order to avoid the back of the pressure detection plate being affected by the vibration of the road roller, which would cause the detection value error to be too large, a buffer rubber installed on the inner wall of the telescopic cavity is used for buffering. The vibrating ball in the movable cavity vibrates with the vibration of the road roller, thereby dissipating the impact force on the back of the pressure detection plate.

[0022] Preferably, a mounting rod is fixedly connected to the outer surface of the front end of the road roller body. The buffer mechanism includes a connecting rod that is hinged to the upper surface of one end of the mounting frame and the front surface of the mounting rod via a hinged lug. A buffer telescopic rod is hinged to the outer surface of the connecting rod via a fixing ring. A buffer spring is fixedly sleeved on the outer surface of the buffer telescopic rod. The telescopic end surface of the buffer telescopic rod is hinged to the surface of the mounting rod.

[0023] Through the above technical solution, the vibration of the roller will cause the mounting frame to vibrate simultaneously. In order to buffer the vibration of the installation and avoid affecting the pressure value of the roller plate, the vibration of the connecting rod is buffered by the buffer telescopic rod and the buffer spring.

[0024] Preferably, the marking mechanism includes a mounting groove formed on the lower surface of the connecting block. The inner wall of the mounting groove is rotatably connected to symmetrically distributed rotating rods via bearings. A drive gear is fixedly sleeved on the outer surface of the rotating rod, and the outer surfaces of two drive gears mesh. A hinge rod for flipping is fixedly connected to the outer surface of the drive gear. A pressure plate is hinged to one end of the hinge rod. A rotating motor is mounted on the inner wall of the mounting groove, and the outer surface of the output shaft of the rotating motor is fixedly connected to the outer surface of one of the rotating rods via a coupling.

[0025] The above technical solution aims to test the compaction degree of the rolled grassy surface and avoid uneven compaction. Therefore, after rolling, a pressure plate is pressed onto the grassy surface again for compaction testing. To control the height adjustment of the pressure plate, a rotating motor installed in the groove controls one of the rotating rods to rotate, thereby driving two drive gears to rotate synchronously. This, in turn, causes the hinge rod to flip, ultimately raising and lowering the pressure plate. When the hinge rod presses the pressure plate so that its lower surface is pressed against the grassy surface, the height at which the pressure plate moves determines whether the rolled surface is up to standard, thus determining whether the road roller needs to repeat the rolling process.

[0026] Preferably, the marking mechanism further includes a support plate fixedly connected to the inner sidewall of the mounting groove. Spray gun pipes are symmetrically distributed and fixedly connected to the lower surface of the support plate. Measuring tubes with scale lines are fixedly sleeved on the outer surfaces of the two spray gun pipes. A sliding hole is opened through the middle upper surface of the pressure plate. The outer surface of the measuring tube is movably sleeved with the inner wall of the sliding hole. A compression spring is fixedly sleeved on the outer surface of the fixing ring of the measuring tube. The free end of the compression spring is fixedly connected to the upper surface of the pressure plate.

[0027] The above technical solution allows for marking the compaction process to determine if the completed area is satisfactory. The roller is moved to the compacted area, and the drive gear rotates to output force through the pressure plate. The pressure plate applies pressure to the compacted subgrade. To determine if the compaction meets the standard, the distance the pressure plate travels from contact with the subgrade to the point where it stops pressing—that is, the distance the pressure plate moves on the outer surface of the measuring tube—is used to assess compaction. To mark whether the compaction is satisfactory, a green dot is sprayed downwards through one of the spray guns when the compaction is satisfactory; a red dot is sprayed downwards through the other spray gun when the compaction is unsatisfactory. This allows the roller to continue compacting, and data is recorded. The relationship between the number of compaction cycles and the compaction effect is analyzed to determine the optimal number of cycles and improve construction efficiency.

[0028] Preferably, the marking mechanism further includes two paint tanks fixedly installed on the lower surface of the roller body. The liquid outlets of the two paint tanks are respectively fixedly connected to the interior of the spray gun tube through liquid inlet pipes. A booster pump is fixedly connected to the lower surface of the paint tanks, and the air outlet of the booster pump is respectively fixedly connected to the interior of the spray gun tube through booster pipes.

[0029] The above technical solution provides marking liquid to the spray gun tube by using a solenoid valve to allow the liquid in the paint tank to enter the spray gun tube, and then using a booster pump to increase the pressure and spray it out for marking.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. By setting up a pressure detection mechanism, the compaction degree of the road surface can be detected when the road roller is compacting the road surface. During the adjustment process, the rotation of the roller causes the roller plate to rotate synchronously and contact the grassy ground for compaction. Based on the looseness of the ground, the distance of extension and retraction of the telescopic rod in the telescopic hole can be determined, thereby detecting the compaction degree of the compacted ground, and then analyzing the relationship between the number of compaction times and the compaction effect to obtain the optimal number of compaction times and improve construction efficiency.

[0032] 2. By setting up a buffer mechanism, the installation frame can be buffered and vibration reduced during the rolling process. During the adjustment process, the vibration of the connecting rod is buffered by the buffer telescopic rod and the buffer spring, thereby avoiding affecting the pressure value of the road plate.

[0033] 3. By setting up a marking mechanism, substandard roadbed surfaces can be marked online for secondary compaction. During adjustment, a rotating motor inside the mounting groove controls one of the rotating rods to rotate, which in turn drives two drive gears to rotate synchronously. This, in turn, causes the hinged rod to flip, ultimately raising and lowering the pressure plate. When the hinged rod presses the pressure plate so that its lower surface is pressed against the grassy ground, the height at which the pressure plate moves determines whether the compacted surface is up to standard, thus determining whether the roller needs to repeat the compaction. If the compaction is up to standard, one spray gun nozzle sprays a green dot downwards; if the compaction is down to standard, the other spray gun nozzle sprays a red dot downwards, allowing the roller to continue compaction. Data is recorded, and the relationship between the number of compaction cycles and the compaction effect is analyzed to determine the optimal number of compaction cycles and improve construction efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0035] Figure 2 This is a three-dimensional view of the roller structure for a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0036] Figure 3 This is a three-dimensional view of the vibration cavity structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0037] Figure 4 This is a three-dimensional view of the eccentric wheel structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0038] Figure 5 This is a three-dimensional view of the vibratory block structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0039] Figure 6 This is a three-dimensional view of the compaction slab structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0040] Figure 7 This is a three-dimensional view of the telescopic pole structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0041] Figure 8 This is a three-dimensional view of the expansion cavity structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0042] Figure 9This is a three-dimensional diagram of the vibrating ball structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0043] Figure 10 This is a three-dimensional view of the buffer mechanism structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0044] Figure 11 This is a three-dimensional view of the pressure plate structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0045] Figure 12 This is a three-dimensional view of the articulated rod structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0046] Figure 13 This is a three-dimensional view of the drive gear structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0047] Figure 14 This is a three-dimensional view of the spray gun pipe structure of a roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas, as proposed in this invention.

[0048] In the diagram: 1. Road roller; 11. Mounting rod; 2. Connecting block; 3. Mounting frame; 4. Roller roller; 5. Pressure detection mechanism; 51. Vibrating chamber; 52. Shaft; 53. Eccentric wheel; 54. Vibrating block; 55. Roller plate; 56. Telescopic chamber; 57. Telescopic hole; 58. Telescopic rod; 59. Detection probe; 60. Return spring; 61. Connecting sleeve; 62. Pressure detection plate; 63. Conical stop block; 64. Buffer rubber. 65. Adhesive; 66. Movable cavity; 7. Vibrating ball; 8. Buffer mechanism; 91. Connecting rod; 10. Buffer telescopic rod; 11. Buffer spring; 12. Marking mechanism; 13. Mounting groove; 14. Rotating rod; 15. Drive gear; 16. Hinge rod; 17. Pressure plate; 18. Rotating motor; 19. Support plate; 20. Spray gun tube; 21. Measuring tube; 32. Sliding hole; 43. Compression spring; 54. Paint box; 65. Booster pump. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] A method for real-time measurement of the compaction degree of grassland in high-altitude areas during roadbed construction, the method comprising:

[0051] Soil investigation and analysis: Before carrying out subgrade construction, a detailed soil investigation and analysis are conducted, and appropriate construction methods are selected based on the analysis results.

[0052] Route design and planning: Design a suitable route and roadbed layout scheme based on local topography, hydrological characteristics and soil conditions.

[0053] Soil improvement: Based on the results of the soil survey, if the soil conditions are not ideal, consider soil improvement measures such as adding organic matter, applying minerals and fertilizers to improve soil fertility and stability.

[0054] Compaction measures: Select an appropriate road roller 1 to compact the roadbed, and arrange the construction sequence and number of compaction times reasonably according to the soil type and compaction requirements.

[0055] Reference Figures 1-14 A connecting block 2 is provided at the front end of the body of the road roller 1. A mounting frame 3 is fixedly connected to one side surface of the front end of the connecting block 2. A road roller 4 with toothed blocks on its surface is rotatably connected to the inner surface of the mounting frame 3 through a bearing rod. A marking mechanism 8 is provided on the lower surface of the connecting block 2. A pressure detection mechanism 5 is provided on the surface of the road roller 4. A buffer mechanism 7 is provided between the connecting block 2 and the mounting frame 3.

[0056] Among them, the pressure testing mechanism 5 detects the compaction degree of the road surface as the road roller 4 rolls the road surface.

[0057] To compact the improved soil, the roller 1 is controlled to travel along the route, driving the roller 4 to rotate forward. The pressure detection mechanism 5 includes a vibration chamber 51 inside the roller 4. The inner wall of the vibration chamber 51 is rotatably connected to a shaft 52 via bearings. Eccentric wheels 53 are fixedly sleeved on the outer surface of the shaft 52 at uniform intervals. Vibrating blocks 54 are fixedly connected to the inner wall of the vibration chamber 51 in a ring array. The outer surface of the vibrating blocks 54 slides in contact with the outer surface of the eccentric wheels 53. During the forward movement, the shaft 52 is controlled to drive the spaced eccentric wheels 53 to rotate axially, causing the convex circular surface of the eccentric wheels 53 to strike the outer surface of the vibrating blocks 54, causing the roller 4 to vibrate at a high frequency, thereby compacting the road surface.

[0058] To test the compaction degree of grassland in high-altitude areas, analyze the relationship between the number of compaction cycles and the compaction effect, determine the optimal number of compaction cycles, and improve construction efficiency, the pressure testing mechanism 5 also includes compaction plates 55 arranged in a ring array on the outer surface of the roller 4. The vibrating block 54 has a telescopic cavity 56 inside. The inner wall of the telescopic cavity 56 and the inner wall of the vibrating cavity 51 are connected by telescopic holes 57 arranged in a ring array. A telescopic rod 58 slides and extends along the inner wall of the telescopic hole 57. One side of the telescopic rod 58 is hinged to one side of the compaction plate 55 via a hinged lug. As the roller 4 rotates, the compaction plate 55 rotates synchronously and contacts the grassland surface. Based on the looseness of the ground, the compaction degree can be determined. The extension distance of the telescopic rod 58 in the telescopic hole 57 allows for the detection of the compaction degree of the rolled ground. To ensure better contact between the roller slab 55 and the ground, the roller slab 55 is hinged to multiple telescopic rods 58 via hinged lugs, allowing the angle of the roller slab 55 to self-adjust as the roller 4 rotates. To detect the moisture content of grassland in high-altitude areas, detection probes 59 are fixedly installed at uniform intervals on the lower surface of the roller slab 55. A humidity sensor is installed inside the roller slab 55, and the detection probes 59 extend to the outside of the roller slab 55. When the outer surface of the roller slab 55 contacts the grassland, the detection probes 59 can be inserted into the grassland to detect the moisture content.

[0059] To reset the extension and retraction of the telescopic pole 58, thereby facilitating cyclic testing of the compaction degree of the road section, the pressure testing mechanism 5 also includes a reset spring 60 fixedly sleeved on the outer surface of the telescopic pole 58. The free end of the reset spring 60 is fixedly connected to the inner wall of the telescopic hole 57. A conical connecting sleeve 61 is fixedly connected to the inner wall of the telescopic cavity 56. The connecting sleeve 61 is fixedly sleeved on the upper outer surface of the telescopic pole 58. When the telescopic pole 58 extends and retracts, the tension of the reset spring 60 can achieve better compaction of the road roller 55 on the ground. When the road roller 55 rotates upward, it resets itself. The connecting sleeve 61 can strengthen the connection between the telescopic pole 58 and the road roller 55, allowing for telescopic adjustment.

[0060] The road roller 55 presses against the road surface, causing deformation of the telescopic rod 58. To measure the deformation of the telescopic rod 58 during its extension and retraction and to generate a waveform diagram of the pressure exerted on the road roller 55, thereby determining whether the compaction degree of the road section meets the specifications, the pressure detection mechanism 5 also includes a pressure detection plate 62 fixedly installed on the inner wall of the telescopic cavity 56. A piezoelectric pressure sensor is installed inside the pressure detection plate 62. A conical abutment 63 is fixedly connected to the upper surface of the telescopic rod 58. The upper surface of the conical abutment 63 slides in contact with the lower surface of the pressure detection plate 62. When the road roller 55 is subjected to pressure, the telescopic rod 58 extends and retracts into the telescopic cavity 56, and the telescopic rod... The conical block 63 on one side of 58 presses the pressure detection plate 62, thereby quantifying the pressure. In order to avoid the back of the pressure detection plate 62 being affected by the vibration of the roller 4 and causing excessive error in the detection value, a buffer rubber 64 is installed on the upper surface of the pressure detection plate 62. The buffer rubber 64 has a movable cavity 65 inside, and densely packed vibrating balls 66 are placed inside the movable cavity 65. The buffer rubber 64 installed on the inner wall of the telescopic cavity 56 provides buffering, so that the vibrating balls 66 in the movable cavity 65 vibrate with the vibration of the roller 4, thereby dissipating the impact force on the back of the pressure detection plate 62.

[0061] By setting up a pressure detection mechanism 5, the compaction degree of the road surface can be detected when the road roller 1 is compacting the road surface. During the adjustment process, the rotation of the roller 4 causes the roller plate 55 to rotate synchronously and contact the grassy ground for compaction. Based on the looseness of the ground, the distance of extension and retraction of the telescopic rod 58 in the telescopic hole 57 can be determined, thereby detecting the compaction degree of the compacted ground, and then analyzing the relationship between the number of compaction cycles and the compaction effect to obtain the optimal number of compaction cycles and improve construction efficiency.

[0062] Among them, the buffer mechanism 7 buffers the vibration generated by the mounting frame 3 when rolling the road surface.

[0063] A mounting rod 11 is fixedly connected to the outer surface of the front end of the roller 1. In order to buffer the vibration during installation and thus avoid affecting the pressure value of the roller plate 55, the buffering mechanism 7 includes a connecting rod 71 that is hinged to the upper surface of one end of the mounting frame 3 and the front surface of the mounting rod 11 through a hinged lug. A buffer telescopic rod 72 is hinged to the outer surface of the connecting rod 71 through a fixing ring. A buffer spring 73 is fixedly sleeved on the outer surface of the buffer telescopic rod 72. The telescopic end surface of the buffer telescopic rod 72 is hinged to the surface of the mounting rod 11. The vibration of the connecting rod 71 is buffered by the buffer telescopic rod 72 and the buffer spring 73.

[0064] By setting up a buffer mechanism 7, the installation frame 3 can be buffered and its vibration reduced during the rolling process. During the adjustment process, the vibration of the connecting rod 71 used for connection is buffered by the buffer telescopic rod 72 and the buffer spring 73, thereby avoiding affecting the pressure value of the road plate 55.

[0065] Among them, the marking mechanism 8 marks the compacted road surface in different ways.

[0066] To test the compaction degree of the rolled grass pavement and avoid uneven compaction, the marking mechanism 8 includes a mounting groove 81 on the lower surface of the connecting block 2. The inner wall of the mounting groove 81 is rotatably connected to symmetrically distributed rotating rods 82 via bearings. Drive gears 83 are fixedly sleeved on the outer surface of the rotating rods 82, with the outer surfaces of the two drive gears 83 meshing. A hinged rod 84 for flipping is fixedly connected to the outer surface of the drive gears 83. A pressure plate 85 is hinged to one end of the hinged rod 84. After rolling, the pressure plate 85 is pressed again onto the grass pavement for compaction testing. The height of the pressure plate 85 is adjustable to control this process. A rotary motor 86 is installed on the inner wall of the mounting groove 81. The outer surface of the output shaft of the rotary motor 86 is fixedly connected to the outer surface of one of the rotating rods 82 through a coupling. The rotary motor 86 in the mounting groove 81 controls one of the rotating rods 82 to rotate, thereby driving two drive gears 83 to rotate synchronously, which in turn drives the hinge rod 84 to flip, ultimately realizing the lifting and lowering of the pressure plate 85. When the hinge rod 84 presses the pressure plate 85 so that its lower surface is pressed onto the ground of the grass, the height at which the pressure plate 85 moves can be used to determine whether the compacted ground is qualified, thereby determining whether the road roller 1 needs to repeat the compaction.

[0067] To mark whether the compacted area is up to standard, the marking mechanism 8 also includes a support plate 87 fixedly connected to the inner wall of the mounting groove 81. Spray gun pipes 88 are symmetrically distributed and fixedly connected to the lower surface of the support plate 87. When the roller 1 moves to the compacted area, if the compaction is up to standard, one spray gun pipe 88 marks a green dot downwards; if the compaction is down to standard, the other spray gun pipe 88 marks a red dot downwards. This allows the roller 1 to continue compacting, record data, analyze the relationship between the number of compaction cycles and the compaction effect, obtain the optimal number of compaction cycles, and improve... To determine whether the compaction meets the standard, the distance from the pressure plate 85 to the stop pressing position, i.e. the distance the pressure plate 85 moves on the outer surface of the measuring tube 89, is used to judge the compaction. The outer surfaces of the two spray gun pipes 88 are fixedly sleeved with measuring tubes 89 with scale lines. A sliding hole 90 is opened through the middle upper surface of the pressure plate 85. The outer surface of the measuring tube 89 is movably sleeved with the inner wall of the sliding hole 90. A compression spring 91 is fixedly sleeved on the outer surface of the fixing ring of the measuring tube 89. The free end of the compression spring 91 is fixedly connected to the upper surface of the pressure plate 85.

[0068] In order to provide marking liquid to the spray gun tube 88, the marking mechanism 8 also includes two paint tanks 92 fixedly installed on the lower surface of the roller 1 body. The liquid outlet of the two paint tanks 92 is fixedly connected to the inside of the spray gun tube 88 through the liquid inlet pipe. A booster pump 93 is fixedly connected to the lower surface of the paint tank 92. The air outlet of the booster pump 93 is fixedly connected to the inside of the spray gun tube 88 through the booster pipe. The liquid in the paint tank 92 is allowed to enter the spray gun tube 88 through the solenoid valve, and the pressure is increased by the booster pump 93 to spray out for marking.

[0069] By setting a marking mechanism 8, roadbed surfaces with unqualified compaction can be marked online for secondary compaction. During the adjustment process, the rotating motor 86 in the mounting groove 81 controls one of the rotating rods 82 to rotate, thereby driving two drive gears 83 to rotate synchronously, which in turn drives the hinge rod 84 to flip, ultimately raising and lowering the pressure plate 85. When the hinge rod 84 presses the pressure plate 85 so that its lower surface is pressed onto the grassy ground, the height at which the pressure plate 85 moves can determine whether the compacted ground is qualified, thus determining whether the road roller 1 needs to repeat the compaction. If the compaction is qualified, one of the spray gun pipes 88 sprays a green dot downwards; if the compaction is unqualified, the other spray gun pipe 88 sprays a red dot downwards, allowing the road roller 1 to continue compaction, record data, analyze the relationship between the number of compaction cycles and the compaction effect, obtain the optimal number of compaction cycles, and improve construction efficiency.

[0070] Working principle: In a specific embodiment of the present invention, the road roller 1 travels along a prescribed route, driving the road roller 4 to rotate forward. During the forward movement, the rotating shaft 52 drives the spaced eccentric wheels 53 to rotate axially, so that the convex circular surface of the eccentric wheel 53 strikes the outer surface of the vibrating block 54, causing the road roller 4 to vibrate at a high frequency, thereby achieving compaction of the road surface.

[0071] Furthermore, during the compaction of the road surface, as the roller 4 rotates, the roller 55 rotates synchronously and contacts the grassy ground for compaction. When compacting, the detection probe 59 on the outer surface of the roller 55 is inserted into the grassy area to detect the moisture content. At the same time, based on the looseness of the ground, the distance of extension and retraction of the telescopic rod 58 in the telescopic hole 57 can be determined. When the telescopic rod 58 extends and retracts, the tension of the return spring 60 enables the roller 55 to better compact the ground.

[0072] When the roller 55 is subjected to pressure, the telescopic rod 58 extends and retracts into the telescopic cavity 56, and the conical block 63 on one side of the telescopic rod 58 presses the pressure detection plate 62, thereby realizing the quantification of pressure. In addition, the vibrating ball 66 in the movable cavity 65 of the buffer rubber 64 vibrates with the vibration of the roller 4, which can dissipate the impact force on the back of the pressure detection plate 62.

[0073] The vibration of the roller 4 will cause the mounting frame 3 to vibrate simultaneously. The vibration of the connecting rod 71 is buffered by the buffer telescopic rod 72 and the buffer spring 73, which facilitates the accuracy of the compaction value.

[0074] After the road roller 1 moves forward, the rotating motor 86 in the mounting groove 81 controls one of the rotating rods 82 to rotate, thereby driving the two drive gears 83 to rotate synchronously, which in turn drives the hinge rod 84 to flip. When the hinge rod 84 presses the pressure plate 85 so that its lower surface is pressed on the grassy ground, the height of the pressure plate 85 can be used to determine whether the ground is qualified and whether the road roller 1 needs to repeat the rolling.

[0075] The pressure plate 85 applies pressure to the compacted roadbed. To determine whether the compaction meets the standard, the distance from the pressure plate 85's contact with the roadbed to the point where it stops pressing is measured, i.e., the distance the pressure plate 85 moves on the outer surface of the measuring tube 89. To mark whether the compaction is qualified, liquid from the paint tank 92 is introduced into the spray gun pipe 88 through a solenoid valve, and the pressure is increased by the booster pump 93 to spray out for marking. When the compaction is qualified, a green dot is sprayed downwards through one of the spray gun pipes 88; when the compaction is unqualified, a red dot is sprayed downwards through the other spray gun pipe 88. This allows the road roller 1 to continue compacting, and the data is recorded. The relationship between the number of compaction cycles and the compaction effect is analyzed to obtain the optimal number of compaction cycles and improve construction efficiency.

[0076] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for roadbed construction that measures the compaction degree of grassland in high-altitude areas in real time, characterized in that: The roadbed construction method includes: Soil investigation and analysis: Before the roadbed construction, a detailed soil investigation and analysis are conducted, and appropriate construction methods are selected based on the analysis results; Route design and planning: Design a suitable route and roadbed layout scheme based on local topography, hydrological characteristics and soil conditions; Soil improvement: Based on the results of the soil survey, if the soil conditions are not ideal, consider soil improvement measures such as adding organic matter, applying minerals and fertilizers to improve soil fertility and stability. Compaction measures: Select an appropriate road roller (1) to compact the roadbed, and arrange the construction sequence and number of compactions reasonably according to the soil type and compaction requirements; The front end of the roller (1) is provided with a connecting block (2), and a mounting frame (3) is fixedly connected to one side surface of the front end of the connecting block (2). The inner surface of the mounting frame (3) is rotatably connected to a roller (4) with toothed blocks on its surface via a bearing rod. A marking mechanism (8) is provided on the lower surface of the connecting block (2), and a pressure detection mechanism (5) is provided on the surface of the roller (4). A buffer mechanism (7) is provided between the connecting block (2) and the mounting frame (3). The pressure detection mechanism (5) detects the compaction degree of the road surface as the road roller (4) rolls the road surface; The pressure detection mechanism (5) includes a vibration cavity (51) inside the roller (4). Vibration blocks (54) are fixedly connected to the inner wall of the vibration cavity (51) in a ring array. The pressure detection mechanism (5) also includes a roller plate (55) arranged in a ring array on the outer surface of the roller (4). A telescopic cavity (56) is opened inside the vibration block (54). The inner wall of the telescopic cavity (56) and the inner wall of the vibration cavity (51) are arranged in a ring array and have telescopic holes (57) through them. A telescopic rod (58) slides and extends on the inner wall of the telescopic hole (57). One side surface of the telescopic rod (58) is hinged to one side surface of the roller plate (55) through a hinge ear plate. Detection probes (59) are fixedly installed on the lower surface of the roller plate (55) at uniform intervals. The pressure detection mechanism (5) further includes a return spring (60) fixedly sleeved on the outer surface of the telescopic rod (58). The free end of the return spring (60) is fixedly connected to the inner wall of the telescopic hole (57). A conical connecting sleeve (61) is fixedly connected to the inner wall of the telescopic cavity (56). The connecting sleeve (61) is fixedly sleeved on the upper outer surface of the telescopic rod (58). The pressure detection mechanism (5) further includes a pressure detection plate (62) fixedly installed on the inner wall of the telescopic cavity (56). A piezoelectric pressure sensor is installed inside the pressure detection plate (62). A conical block (63) is fixedly connected to the upper surface of the telescopic rod (58). The upper surface of the conical block (63) slides in contact with the lower surface of the pressure detection plate (62). A buffer rubber (64) is installed on the upper surface of the pressure detection plate (62). A movable cavity (65) is opened inside the buffer rubber (64). Dense vibrating balls (66) are placed inside the movable cavity (65). The buffer mechanism (7) buffers the vibration generated by the mounting frame (3) when rolling the road surface; The marking mechanism (8) marks the compacted road surface in different ways; The marking mechanism (8) includes a mounting groove (81) formed on the lower surface of the connecting block (2). The inner wall of the mounting groove (81) is rotatably connected to symmetrically distributed rotating rods (82) via bearings. A drive gear (83) is fixedly sleeved on the outer surface of the rotating rod (82). The outer surfaces of the two drive gears (83) mesh. A hinge rod (84) for flipping is fixedly connected to the outer surface of the drive gear (83). A pressure plate (85) is hinged to one end of the hinge rod (84). A rotating motor (86) is installed on the inner wall of the mounting groove (81). The outer surface of the output shaft of the rotating motor (86) is fixedly connected to the outer surface of one of the rotating rods (82) via a coupling. The marking mechanism (8) further includes a support plate (87) fixedly connected to the inner wall of the mounting groove (81). Spray gun tubes (88) are symmetrically distributed and fixedly connected to the lower surface of the support plate (87). Measuring tubes (89) with scale lines are fixedly sleeved on the outer surfaces of the two spray gun tubes (88). A sliding hole (90) is opened through the middle upper surface of the pressure plate (85). The outer surface of the measuring tube (89) is movably sleeved with the inner wall of the sliding hole (90). A compression spring (91) is fixedly sleeved on the outer surface of the fixing ring of the measuring tube (89). The free end of the compression spring (91) is fixedly connected to the upper surface of the pressure plate (85). The marking mechanism (8) also includes two paint tanks (92) fixedly installed on the lower surface of the roller (1) body. The liquid outlet of the two paint tanks (92) is fixedly connected to the inside of the spray gun tube (88) through the liquid inlet pipe. A booster pump (93) is fixedly connected to the lower surface of the paint tank (92). The air outlet of the booster pump (93) is fixedly connected to the inside of the spray gun tube (88) through the booster pipe.

2. The roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas according to claim 1, characterized in that: The inner wall of the vibration cavity (51) is rotatably connected to a rotating shaft (52) via a bearing. An eccentric wheel (53) is fixedly sleeved on the outer surface of the rotating shaft (52) at uniform intervals. The outer surface of the vibrating block (54) slides in contact with the outer surface of the eccentric wheel (53).

3. The roadbed construction method for real-time measurement of the compaction degree of grassland in high-altitude areas according to claim 2, characterized in that: The roller (1) has a mounting rod (11) fixedly connected to the outer surface of the front end of the machine body. The buffer mechanism (7) includes a connecting rod (71) that is hinged to the upper surface of one end of the mounting frame (3) and the front surface of the mounting rod (11) through a hinged ear plate. A buffer telescopic rod (72) is hinged to the outer surface of the connecting rod (71) through a fixed ring. A buffer spring (73) is fixedly sleeved on the outer surface of the buffer telescopic rod (72). The telescopic end surface of the buffer telescopic rod (72) is hinged to the surface of the mounting rod (11).

Images